JP4798280B2 - Thermometer, electronic device having thermometer, and body temperature measuring method - Google Patents

Description

  The present invention relates to a thermometer for measuring body temperature, an electronic apparatus having a thermometer, and a body temperature measuring method.

As a body temperature measuring method for measuring the body temperature of a living body such as a human body, a method is proposed in which the temperature on the body surface side and the temperature on the outside air side of the heat insulating material in contact with the body surface are measured and the temperature in the deep part is calculated. (For example, refer to Patent Document 1).
In this measurement method, it is assumed that the depth from the body surface to the deep part where the core temperature is obtained is 2 cm, and the thermal conductivity is 1 × 10 −3 cal / cm.sec. ° C. using the thermal conductivity of the muscle. Assuming that, the thermal resistance of the skin is calculated. And the temperature of the deep part with respect to the temperature of the measured body surface is calculated using the value of this thermal resistance, the thermal resistance value of a heat insulating material, and the temperature on the outside air side. Such a measurement method eliminates the need for heating means such as a heater, which has conventionally been necessary for canceling the heat flow conducted from the living body to the thermometer, thereby promoting power saving.

JP 61-120026 (page 3)

  However, even in the case of the human body, there are various physiques from infants to adults and elderly people, and the muscle development situation varies greatly, so the heat transfer characteristics vary greatly depending on these different body types, from the body surface to the deep part. The thermal resistance value of fluctuates greatly. For this reason, in this body temperature measurement method in which the thermal resistance is a fixed value, there is a difference between the measured value and the actual body temperature due to differences in body shape. Moreover, when clothes, bedding, or the like comes into contact with the outside air side of the heat insulating material, the heat resistance value of the heat insulating material fluctuates, and there is a problem that high-precision measurement cannot be performed.

  An object of the present invention is to provide a thermometer, an electronic device having a thermometer, and a body temperature measuring method capable of measuring temperature with high accuracy regardless of a difference in the body shape of a living body or a change in heat transfer characteristics due to contact of clothes or bedding. It is in.

The thermometer of the present invention includes a first temperature measuring means, a second temperature measuring means, and a deep temperature calculating means, wherein the first temperature measuring means is configured to be able to contact the first body surface of a living body, A first reference temperature measurement unit that measures a first reference temperature at a first reference temperature measurement position having a first thermal resistance value from the first body surface; and a thermal resistance value from the first body surface. A first reference temperature measurement unit that measures a temperature at a first reference temperature measurement position different from the first thermal resistance value as a first reference temperature, and is provided between the first reference temperature measurement position and outside air. A first heat insulating material, and a third heat insulating material provided between the first reference temperature measuring position and the first reference temperature measuring position, and the second temperature measuring means includes the first heat insulating material , It is configured to be able to contact a second body surface at a position different from the body surface, and from the second body surface to the first body surface A second reference temperature measuring unit for measuring a second reference temperature at the second reference temperature measuring position having a second thermal resistance in common with the thermal resistance, the thermal resistance from the second body surface wherein A second reference temperature measurement unit for measuring a temperature at a second reference temperature measurement position different from the second thermal resistance value as a second reference temperature; and provided between the second reference temperature measurement position and the outside air. A second heat insulating material having a heat resistance value different from a heat resistance value of the first heat insulating material, and provided between the second reference temperature measurement position and the second reference temperature measurement position; A fourth heat insulating material having a thermal resistance value common to the third heat insulating material provided between a reference temperature measuring position and the first reference temperature measuring position, and the deep temperature calculating means includes the first and second reference temperatures, with the first and second reference temperatures of the deep of the body Characterized in that that will be configured to calculate a degree.

According to this invention, the first reference temperature, the first heat flux value at the measurement position, and the second reference temperature are respectively measured by the first temperature measuring means and the second temperature measuring means configured on different body surfaces. And a second heat flux value at the measurement position. At this time, the heat flux of the first temperature measuring means and the heat flux of the second temperature measuring means have different values depending on the heat flux adjusting means. Therefore, the first temperature measurement means and the second temperature measurement means can obtain different temperature and thermal resistance value relationships.
The ratio between the first thermal resistance value from the first body surface to the first reference temperature measurement position and the second thermal resistance value from the second body surface to the second reference temperature measurement position is known. . In other words, even if the thermal resistance value from the deep part of the living body to the body surface and the thermal resistance value from the living body surface to the reference temperature measurement position are unknown, these values are calculated from the relationship between two different temperatures and thermal resistance values. The temperature of the deep part of the living body is calculated. Therefore, it is not necessary to measure the temperature of the deep part with a known thermometer or the like.
In addition, it is not necessary to assume that the thermal resistance value from the deep part of the living body to the body surface is a fixed value, so that even if there is a difference in heat transfer characteristics due to differences in the body form of the living body, Is accurately calculated.

  Here, the deep part of the living body refers to a part where the temperature distribution is smaller and the temperature distribution is stable compared to the temperature on the body surface, such as a core part. Accordingly, the deep temperature means, for example, the core temperature. The core temperature is the temperature that does not change due to changes in heat dissipation to the environment that affects circulation and the outer shell of the living body in the temperature state inside the thermophilic animal's ecology. Refers to temperature. Hereinafter, the same applies to each invention.

According to this invention, the first heat flux value and the second heat flux value are obtained by measuring the first and second reference temperatures in addition to the first and second reference temperatures, It is obtained by using a thermal resistance value between temperature. Here, the ratio between the thermal resistance value between the first reference temperature measurement position and the first reference temperature measurement position and the thermal resistance value between the second reference temperature measurement position and the second reference temperature measurement position is known. If so, the temperature of the deep part of the living body is calculated from two relations between the temperature and the thermal resistance obtained by the first temperature measuring means and the second temperature measuring means.
Therefore, the temperature of the deep part of the living body is measured using only a temperature that is relatively easy to measure. In addition, the handling of the thermometer is improved by simplifying the body temperature measurement work.

According to this invention, between and between the second reference temperature measuring position and the second reference temperature measuring position of the first reference temperature measuring position and the first reference temperature measuring position, with a common thermal resistance Third and fourth heat insulating materials are provided. Therefore, by using the same heat insulating material, the thickness becomes the same and the structure becomes simple.

  In addition, according to such a configuration, even if the thermal resistance value between the reference temperature measurement position and the outside air changes due to contact with clothes, bedding, etc., the reference temperature measurement position and the reference temperature measurement position The thermal resistance value between is constant and common, and only the temperature difference between the reference temperature and the reference temperature changes. Therefore, the temperature of the deep part of the living body is calculated only from the measured temperature, and the temperature of the deep part is accurately calculated.

が記憶されていることが好ましい。
また、本発明では、前記第１の断熱材と前記第２の断熱材とは、異なる材質で形成されていることが好ましい。 In the present invention, if the first reference temperature is Tb1, the first reference temperature is Tb2, the second reference temperature is Tb3, and the second reference temperature is Tb4 ,
The deep part temperature calculation means includes an arithmetic expression for calculating the deep part temperature Tcore.

Is preferably stored.
In the present invention, it is preferable that the first heat insulating material and the second heat insulating material are formed of different materials.

  According to the present invention, since an appropriate calculation formula is stored in the deep temperature calculation means, the first reference temperature Tb1, the first reference temperature Tb2, the second reference temperature Tb3, and the second reference temperature Tb4. If these measured values are directly substituted into the calculation formula, the deep temperature Tcore is calculated. Therefore, it is not necessary to calculate the thermal resistance value from the deep part of the living body to the body surface from these measured values, and the calculation is simplified. Thereby, since a calculation process becomes quick, the responsiveness of a thermometer becomes favorable.

In the present invention, the display device includes: a display device having a display unit that displays the temperature of the deep portion calculated by the deep temperature calculation device; and a thermometer body having a first temperature measurement device and a second temperature measurement device. It is preferable that the thermometer main body is configured separately.
According to this invention, since the display device and the thermometer main body are configured separately, the weight reduction of the thermometer main body having the first and second temperature measuring means that need to contact the body surface of the living body is promoted. The Therefore, even if the thermometer main body is brought into contact with the body surface of the living body for a long time, there is no burden, and continuous body temperature monitoring can be performed over a long time.

In this invention, it is preferable that the said thermal resistance calculation means and the said deep part temperature calculation means are provided in the said display apparatus.
According to this invention, since the deep temperature calculation means is provided in the display device, the components of the thermometer main body are suppressed to the minimum. Therefore, the thermometer main body is reduced in weight and size, and the burden is further reduced even when the thermometer main body is brought into contact with the body surface of the living body, even for long-time measurement.

In the present invention, it is preferable that the display device and the thermometer main body each include transmission / reception means capable of transmitting / receiving information to / from each other by wireless communication.
According to the present invention, since the display device and the thermometer main body are each provided with transmission / reception means and are configured to be capable of wireless communication with each other, the display device can be installed at a certain distance from the thermometer main body. Since the display device is not wired with the thermometer main body, the thermometer main body can be completely separated from the display device. Therefore, the weight saving of the thermometer main body is further promoted, and the handleability of the thermometer main body is improved.
As the transmission / reception means, it is preferable to use a wireless communication technology with low power consumption and low manufacturing cost, communication using weak radio waves, or specific low power communication. The same applies to the following inventions.

In this invention, it is preferable that the thermometer main body is comprised so that it can affix on the body surface of the said biological body.
According to this invention, since the thermometer is configured to be attached to the body surface of a living body, it is not necessary to hold the thermometer for a certain period of time as in the conventional measurement of sublingual temperature or armpit temperature. And portability are improved. For example, when a thermometer is used for an infant or an infant, it is difficult to maintain good contact between the thermometer and the body surface for a certain period of time. Even in such a case, since the thermometer is configured so that it can be attached to the body surface, even if an infant or an infant moves, the contact state between the body surface and the thermometer can be maintained well, so that an accurate temperature can be measured. .

An electronic apparatus according to the present invention includes any one of the thermometers described above.
An electronic device that can achieve the above-described effects can be provided.

The body temperature measurement method of the present invention is a body temperature measurement method for measuring the body temperature of a deep part of a living body using the thermometer described above, and has a first reference temperature having a first thermal resistance value from the first body surface of the living body. The first reference temperature is measured at the measurement position, and the temperature at the first reference temperature measurement position where the thermal resistance value from the first body surface is different from the first thermal resistance value is measured as the first reference temperature. And a second reference temperature measurement position having a second thermal resistance value common to the first thermal resistance value from a second body surface different from the first body surface. A second temperature measurement for measuring a reference temperature at a second reference temperature measurement position where a thermal resistance value from the second body surface is different from the second thermal resistance value. a step, wherein the first and second reference temperature, the first and second reference temperature Characterized in that it includes a configured deep temperature calculating step so as to calculate the temperature of the deep area of the living body using.

According to this invention, in the first temperature measurement step, the second temperature measurement step, the first heat flux measurement step, and the second heat flux measurement step, the first reference temperature, the first heat flux value, and the second reference When the temperature and the second heat flux value are obtained, the deep temperature calculation step calculates the deep temperature of the living body based on these measured values.
Here, since the ratio between the first thermal resistance value and the second thermal resistance value is known, these thermal resistance values are erased from the calculation, and the first reference temperature, the first heat flux value, and the second reference value are deleted. The temperature of the deep part of the living body is calculated using the temperature and the second heat flux value. In other words, regardless of changes in thermal resistance due to clothes, bedding, etc., the temperature of the deep part of the living body is calculated using only the measured values of multiple reference temperatures and heat fluxes, so the body temperature of the deep part can be measured with higher accuracy. It becomes possible. In addition, since the temperature of the deep part is calculated from the actual measurement value, the temperature of the deep part corresponding to the heat transfer characteristics of the living body can be calculated without assuming the heat resistance value from the deep part of the living body to the body surface as a fixed value It becomes possible, and deep body temperature can be measured with higher accuracy.

According to this invention, when the first reference temperature, the first reference temperature, the second reference temperature, and the second reference temperature are obtained in the first heat flux measurement step and the second heat flux measurement step, In the deep part temperature calculation step, the temperature of the deep part of the living body is calculated based on these measured values.
The first reference temperature, the first reference temperature, the second reference temperature, the second reference temperature value, and between the first reference temperature measurement position and the first reference temperature measurement position, and the second Based on the thermal resistance value between the reference temperature measurement position and the second reference temperature measurement position, the temperature of the deep part of the living body is calculated. That is, since the temperature of the deep part of the living body is calculated using a plurality of measured values of the body surface temperature and the reference temperature, the deep body temperature can be measured with higher accuracy by a simple method called temperature measurement.

の式より前記深部の温度Ｔcoreを演算することが好ましい。 In the present invention, the first reference temperature Tb1, the first reference temperature Tb2, the second reference temperature Tb3, and when the Tb4 the second reference temperature, the core temperature calculating step ,

It is preferable to calculate the temperature Tcore in the deep part from the following equation.

の式より前記深部の温度Ｔcoreを演算することが好ましい。

It is preferable to calculate the temperature Tcore in the deep part from the following equation.

  According to this invention, in the deep temperature calculation step, the temperature of the deep part of the living body is calculated from the first reference temperature Tb1, the first reference temperature Tb2, the second reference temperature Tb3, and the second reference temperature Tb4. When these temperatures are measured, the temperature in the deep part is calculated by substituting these measured values directly into the calculation formula. Therefore, it is not necessary to calculate the thermal resistance value from the deep part of the living body to the body surface from these measured values, and the calculation is simplified. In addition, this makes the calculation process quick and improves the responsiveness of the thermometer.

Here, the deep temperature calculating means may be implemented by hardware such as IC, and the computer is provided to the thermometer may be realized by executing the thermometer control program to the computer.
That is, the thermometer control program, wherein the computer provided in each thermometer is a program for functioning as a said deep temperature calculating means.
The thermometer control program may be incorporated into the thermometer via a wireless or wired network, or may be incorporated via a computer-readable recording medium that records the thermometer control program.

  According to the thermometer of the present invention, the electronic device having a thermometer, and the body temperature measuring method, in the living body, since the body temperature of the deep part is calculated using the measured value of the temperature from the body surface to the position having the common thermal resistance value, Regardless of the difference in heat transfer characteristics due to the body shape of the living body or the contact of clothes or bedding, the effect of being able to measure the body temperature in the deep part with higher accuracy is obtained.

The block block diagram which shows the thermometer concerning 1st embodiment of this invention. The figure which shows the thermometer main body of 1st embodiment. The figure which shows the thermometer main body and display body of 1st embodiment. The figure which shows the temperature distribution model of the biological body and thermometer of 1st embodiment. The flowchart which shows operation | movement of 1st embodiment. The block block diagram which shows the thermometer concerning 2nd embodiment of this invention. The figure which shows the thermometer main body of 2nd embodiment. The figure which shows the thermometer main body and display body of 2nd embodiment. The figure which shows the temperature distribution model of the biological body and thermometer of 2nd embodiment. The flowchart which shows operation | movement of 2nd embodiment. The block block diagram which shows the thermometer concerning 3rd embodiment of this invention. The block block diagram which shows the thermometer concerning 4th embodiment of this invention. The figure which shows the thermometer main body of 4th embodiment. The figure which shows the temperature distribution model of the biological body and thermometer of 4th embodiment. The figure which shows the thermometer main body of 5th embodiment of this invention. The block block diagram which shows the thermometer concerning 6th embodiment of this invention. The figure which shows the thermometer main body of 6th embodiment. The figure which shows the thermometer main body and display body of 6th embodiment. The figure which shows the temperature distribution model of the biological body and thermometer of 6th embodiment. The flowchart which shows operation | movement of 6th embodiment. The flowchart which shows another operation | movement of 6th embodiment. The block block diagram which shows the thermometer concerning 7th embodiment of this invention. The figure which shows the thermometer main body of 7th embodiment. The figure which shows the thermometer main body and display body of 7th embodiment. The figure showing the temperature distribution simulation result of the body temperature of 7th embodiment. The figure which shows the temperature distribution model of the biological body and thermometer of 7th embodiment. The flowchart which shows operation | movement of 7th embodiment. The flowchart which shows another operation | movement of 7th embodiment. The block block diagram which shows the thermometer concerning the modification 1 of this invention. The block block diagram which shows the thermometer concerning the modification 2 of this invention. The block block diagram which shows the thermometer concerning the modification 3 of this invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the second embodiment and later described below, the same reference numerals are given to the same components and components having the same functions as those in the first embodiment described below.

[First embodiment]
FIG. 1 shows a block diagram of a thermometer 1 according to the present embodiment. The thermometer 1 includes a thermometer body 3 that contacts a body surface 2A (see FIG. 3) of a human body 2 (see FIG. 3) that is a living body, and a display device 4 that is provided separately from the thermometer body 3. .

FIG. 2 shows an enlarged view of a state in which the thermometer main body 3 is attached to the human body 2, and FIG. 3 shows a view in which the thermometer main body 3 and the display device 4 are attached.
First, as shown in FIG. 2, the thermometer body 3 includes two (a pair) of temperature measuring means 3A and 3B which are first and second temperature measuring means. The temperature measuring means 3A includes a heat insulating material 37 as a third heat insulating material having a contact surface 300A that contacts the body surface 2A of the human body 2, and a heat flux adjusting means between the heat insulating material 37 and the outside air. And a heat insulating material 38A as the first heat insulating material provided. On the other hand, the temperature measuring means 3B includes a heat insulating material 37 as a fourth heat insulating material having a contact surface 300B that contacts the body surface 2A at a position different from the contact position of the temperature measuring means 3A, and a heat flux adjusting means. As described above, a heat insulating material 38B as a second heat insulating material is provided between the heat insulating material 37 and the outside air. That is, the heat insulating material 37 is common to the temperature measuring means 3A and the temperature measuring means 3B, and has a common thermal resistance value.

The temperature measuring means 3A is configured to set the temperature of the body surface sensor 31A as a first reference temperature measuring unit that measures the temperature of the body surface 2A as the first reference temperature, and the temperature of the interface 301A between the heat insulating material 37 and the heat insulating material 38A to the first. And an intermediate sensor 32A as a first reference temperature measurement unit that measures the reference temperature.
Further, the temperature measuring means 3B determines the temperature of the interface 301B between the body surface sensor 31B as a second reference temperature measuring unit that measures the temperature of the body surface 2A as the second reference temperature, and the heat insulating material 37 and the heat insulating material 38B. And an intermediate sensor 32B as a second reference temperature measurement unit that measures the second reference temperature.

  The thermometer main body 3 comprising these temperature measuring means 3A and 3B has contact surfaces 300A and 300B that can be attached to the human body 2 with an adhesive or the like, respectively. It is comprised so that it can closely_contact | adhere. In this embodiment, the thermometer main body 3 is in close contact with the chest of an infant (human body 2).

  Here, it is desirable that the attachment position of the thermometer main body 3 is set at a site such as the forehead, the back of the head, the chest, and the back where the body surface temperature can be measured relatively stably. Moreover, even if the clothes are worn on the thermometer main body 3, the thermometer main body 3 may be in contact with the bedding. Further, when the temperature measuring means 3A, 3B are attached to the body surface 2A, the heat insulating materials 37, 38A, 38B pass from the deep part of the human body 2 to the surface through the body surface 2A and the heat insulating materials 37, 38A, 38B. It is desirable to have a certain size so that the heat flux can be approximated to be constant in a steady state. That is, the dimensions of the heat insulating materials 37, 38A, and 38B are such that when the heat transfer is in an equilibrium state, the depth of the human body 2 and the position of the body surface 2A to which the temperature measuring means 3A and 3B are attached are connected. The movement of heat in a substantially orthogonal direction, specifically along the body surface 2A, can be ignored, and the heat movement from the deep part of the human body 2 to the body surface 2A can be regarded as being uniaxial, and the heat flux is uniform. It is desirable that the dimensions be approximated when moving in the direction.

The temperature measuring means 3A and the temperature measuring means 3B are arranged with a predetermined distance L from each other. Here, the predetermined distance L is such that the movement of heat from the deep part of the human body 2 to the body surface 2A can be regarded as being uniaxial, that is, in the direction along the body surface 2A between the temperature measuring means 3A and 3B. It is desirable to set the distance above a predetermined value so that the movement of heat can be ignored.
Further, the heat insulating material 37 may be provided separately for the temperature measuring means 3A and the temperature measuring means 3B, and the temperature measuring means 3A and the temperature measuring means 3B may be completely separated.
Further, the heat insulating material 38A of the temperature measuring means 3A and the heat insulating material 38B of the temperature measuring means 3B are made of different materials, whereby the heat resistance value of the heat insulating material 38A and the heat resistance value of the heat insulating material 38B are different values. Is set to Therefore, the heat flux value of the temperature measuring means 3A and the heat flux value of the temperature measuring means 3B are different values.

As the body surface sensors 31A and 31B and the intermediate sensors 32A and 32B, a sensor that converts the temperature of the body surface 2A and the temperature values of the interfaces 301A and 301B into a resistance value, a sensor that converts a temperature value into a voltage value, and the like can be adopted. For converting the temperature value into a resistance value, a chip thermistor, a flexible substrate on which a thermistor pattern is printed, a platinum resistance thermometer, or the like can be employed. In addition, a thermocouple element, a PN junction element, a diode, or the like can be adopted as a device that converts a temperature value into a voltage value.
In addition to the body surface sensors 31A and 31B and the intermediate sensors 32A and 32B, the temperature measuring means 3A and 3B include A / D converters 34A and 34B and transmission / reception means 35A, as shown in FIG. 35B. Since the temperature measuring means 3A and 3B are integrally formed, it is possible to incorporate the A / D converters 34A and 34B as a common A / D converter and the transmission / reception means 35A and 35B as a common transmission / reception means. is there.

The A / D converters 34A and 34B convert analog signals of resistance values and voltage values converted by the body surface sensors 31A and 31B and the intermediate sensors 32A and 32B into digital signals, and output them to the transmission / reception means 35A and 35B. Alternatively, an RF converter using CR oscillation may be used instead of the A / D converters 34A and 34B.
The transmission / reception means 35A and 35B include antenna coils 36A and 36B, respectively, and transmit a temperature value signal (resistance value or voltage value) converted into a digital signal by the A / D converters 34A and 34B to the display device 4 side. To do. The antenna coils 36A and 36B may be a common antenna coil.

  As shown in FIG. 3, the display device 4 is configured to be portable in a wristwatch type and can be worn by an operator 5 holding an infant wearing the thermometer body 3. As shown in FIG. 1 described above, the display device 4 includes a transmission / reception means 41 that transmits and receives signals to and from the thermometer body 3, a display unit 42 that displays a measurement result of the body temperature, and the display device 4 from the outside. An operation unit 43 to be operated, a control unit 44 for controlling the operation of the display device 4, and a storage unit 45 for accumulating information obtained from the transmission / reception unit 41, the control unit 44, and the like are provided.

  The transmission / reception means 41 includes an antenna coil 46 and transmits / receives radio waves to / from the antenna coils 36 </ b> A and 36 </ b> B of the thermometer body 3. The antenna coil 46 transmits electric waves to the antenna coils 36A and 36B, thereby generating electromotive forces in the antenna coils 36A and 36B by electromagnetic induction, and charging the temperature measuring means 3A and 3B. For this reason, the thermometer main body 3 is driven by this electromotive force and does not require a power source such as a battery.

The display unit 42 displays temperature information and an operation screen on a liquid crystal screen or the like, and can display, for example, a measured body surface temperature, a calculated deep temperature, and the like. In the present embodiment, a display unit 42 is provided in a portion corresponding to a normal dial of a wristwatch, and the display unit 42 can be viewed with the operator 5 wearing the display device 4 on his arm.
The operation unit 43 is configured to be able to input information to the display device 4 from the outside by using buttons, levers, keys, and the like. In the embodiment, information such as the name of the infant), age, measurement date and time of body temperature, and the like can be input.

  The control means 44 is based on the first body surface temperature and the second body surface temperature from the body surface sensors 31A and 31B, and the first intermediate temperature and the second intermediate temperature from the intermediate sensors 32A and 32B. Further, a deep temperature calculation means 441 for calculating the temperature of the deep portion of the human body 2 is provided.

The deep part temperature calculation means 441 includes a first body surface temperature (first reference temperature) Tb1 obtained by the body surface sensor 31A, and a first intermediate temperature (first reference temperature) Tb2 obtained by the intermediate sensor 32A. The human body 2 using the second body surface temperature (second reference temperature) Tb3 obtained by the body surface sensor 31B and the second intermediate temperature (second reference temperature) Tb4 obtained by the intermediate sensor 32B The temperature Tcore of the deep part is calculated.
FIG. 4 shows a model of the temperature distribution from the deep part of the human body 2 through the body surface 2A and the thermometer body 3 to the outside air. The temperature distribution model of the temperature measuring means 3A and the temperature measuring means 3B is indicated by a solid line (temperature measuring means 3A side) and an alternate long and short dash line (temperature measuring means 3B side). The vertical axis represents temperature (T), and the horizontal axis represents thermal resistance (R). Here, if the relationship between the temperature (T) and the thermal resistance (R) is a straight line, the inclination represents the heat flux Q. Since the temperature distribution models of the temperature measuring unit 3A and the temperature measuring unit 3B behave in the same manner, the following description will be made focusing on the temperature measuring unit 3A side indicated by a solid line.

As shown in FIG. 4, in the temperature transfer model from the deep part of the human body 2 to the outside air, the temperature Tcore of the deep part of the human body 2 is substantially constant. In the surface layer part on the outer shell side from the deep part, the body temperature falls due to the influence of the thermal resistance of the skin and the outside air temperature. In practice, there may be a portion corresponding to the case of the thermometer main body 3 between the body surface 2A and the contact surface 300A of the temperature measuring means 3A. Further, since a gap is generated microscopically, the temperature also decreases in the contact thermal resistance portion due to heat release in the gap. Accordingly, when the body temperature of the body surface 2A is actually measured by the body surface sensor 31A of the temperature measuring means 3A, the first body surface temperature Tb1 lowered by the contact thermal resistance portion is measured.
In addition, since the temperature measurement means 3A itself has a thermal resistance (thermal resistance value Ru0) due to the heat insulating material 37, a temperature drop also occurs in the temperature measurement means 3A, and the first intermediate at the interface 301A of the temperature measurement means 3A. It becomes temperature Tb2. In the intermediate sensor 32A, the first intermediate temperature Tb2 is measured. Furthermore, since the heat insulating material 38A having the thermal resistance value Ru1 exists between the interface 301A of the temperature measuring means 3A and the outside air, the temperature decreases, and heat is released at the outside air temperature contact portion (heat of the contact portion). Therefore, the temperature further decreases and finally becomes the outside air temperature Tamb.

  In the steady state, the heat flux Q in each part is constant, so the slope of the graph is constant in FIG. At this time, if the first body surface temperature Tb1 and the first intermediate temperature Tb2 of the temperature measuring means 3A are known, the body surface sensor 31A of the temperature measuring means 3A is obtained by the following equation (1) using the thermal resistance value Ru0. The heat flux Qu1 from the surface on the side to the interface 301A can be calculated.

  On the other hand, the heat flux Qs + t in the portion including the surface layer portion and the contact thermal resistance portion, that is, the portion from the deep portion of the human body 2 to the body surface 2A (actually, the portion from the deep portion to the contact surface 300A) is When the body temperature Tcore and the thermal resistance Rs + Rt of the part from the deep part of the human body 2 to the body surface 2A are used, it is expressed by the following formula (2).

  Here, the thermal resistance value Rt of the contact thermal resistance portion depends on the property of the substance interposed in the contact thermal resistance portion, such as the portion corresponding to the case of the thermometer main body 3, and the heat insulating material of the thermometer 1 in contact with the body surface 2A. It also changes depending on the thermal resistance value of 37. That is, the thermal conductivity of the human body 2 is λ1, the thermal conductivity of the thermometer 1 is λ2, the surface roughness of the human body 2 is δ1, the surface roughness of the contact surface 300A of the thermometer 1 is δ2, and the body surface 2A of the thermometer 1 The pressing pressure is P, the softness of human body 2 and thermometer 1 is H, the thermal conductivity λf of the intervening material between body surface 2A and contact surface 300A, the surface roughness of the intervening material is δf, and the constant is If it is set to c, it will obtain | require from following Formula (3), for example. As described above, since the thermal resistance value Rt of the contact thermal resistance portion varies depending on various conditions, in this embodiment, it is desirable that the thermal resistance value Rt of the contact thermal resistance portion is set to be as small as possible. It is desirable to set so that there is no gap between the surface 2A and the contact surface 300A. As a method of reducing the thermal resistance value Rt of the contact thermal resistance portion, for example, a method of improving the contact state by applying oil to the contact portion between the body surface 2A and the contact surface 300A can be considered.

  Since the heat flux Q is constant in each part, the heat flux Qu1 in the thermometer main body 3 and the heat flux Qs + t in the portion from the deep part of the human body 2 to the body surface 2A are equal (Qu1 = Qs + t). Therefore, the equations (1) and (2) are arranged as the following equation (4), and the deep temperature Tcore is obtained by this equation (4).

  Here, the thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A is an unknown value. Therefore, in the temperature measuring means 3B, if the second body surface temperature Tb3 and the second intermediate temperature Tb4 are obtained from the body surface sensor 31B and the intermediate sensor 32B in the same manner as the temperature measuring means 3A, the deep temperature Tcore is obtained. The following equation (5) is obtained.

Since the thermal resistance value Ru1 of the heat insulating material 38A and the thermal resistance value Ru2 of the heat insulating material 38B are set to different values, the inclination of the temperature (T) with respect to the thermal resistance (R) of the temperature measuring means 3A and the temperature measuring means 3B. Changes (see FIG. 4). That is, two different relational expressions relating to thermal resistance and temperature are obtained.
If the thermal resistance value (Rs + Rt) / Ru0 is eliminated from the equations (4) and (5), the deep temperature Tcore can be obtained by the following equation (6). Here, since the thermal resistance values (Rs + Rt) for the temperature measuring means 3A and the temperature measuring means 3B need to be the same, a portion corresponding to the case of the thermometer body 3 between the body surface sensors 31A, 31B and the body surface 2A. When there is, these case parts are configured to have the same thermal resistance.

  Therefore, this equation (6) is stored in the deep temperature calculation means 441 as a calculation equation for the deep temperature Tcore.

The storage unit 45 stores the first body surface temperature Tb1, the second body surface temperature Tb3, the first intermediate temperature Tb2, and the second intermediate temperature Tb4 transmitted from the thermometer main body 3. Further, the temperature Tcore of the deep part of the human body 2 calculated by the deep part temperature calculating means 441 is also stored.
Here, the memory | storage part 45 is comprised so that the temperature information regarding the several human body 2 is memorize | stored, and the temperature Tcore of the deep part etc. are memorize | stored for every human body 2. FIG. The storage unit 45 can store measurement positions such as the first body surface temperature Tb1 and the second body surface temperature Tb3 measured when calculating the temperature Tcore of the deep part. In addition to the above-described temperature information, the storage unit 45 may store measurement information such as the name, age, measurement date and time of the person to be measured (human body 2, infant), for example. In this case, the measurement information may be input from the operation unit 43.

Such a thermometer 1 operates as follows.
FIG. 5 shows a flowchart showing the operation of the thermometer 1 in the present embodiment.
The thermometer main body 3 is attached to the human body 2 (in this embodiment, the chest of the infant), and the operator 5 of the thermometer 1 holding the infant wears the display device 4 on the arm. When the operator 5 operates the operation unit 43 of the display device 4 and the switch of the display device 4 is turned on, the transmission / reception means 41 transmits radio waves to the thermometer main body 3 (temperature measurement means 3A and temperature measurement means 3B). . The thermometer main body 3 is charged by generating electromotive force in the antenna coils 36A and 36B by electromagnetic induction by the radio waves (step S1). The thermometer main body 3 is activated by the electromotive force (step S2), and the body surface sensors 31A and 31B and the intermediate sensors 32A and 32B are activated. When these sensors 31A, 31B, 32A, 32B are activated, the thermometer main body 3 transmits a standby signal from the transmission / reception means 35A, 35B to the display device 4 (step S3).

  When receiving the standby signal, the control means 44 of the display device 4 transmits a temperature measurement command signal from the transmission / reception means 41 (step S4). The thermometer main body 3 receives this temperature measurement command signal, drives the body surface sensors 31A and 31B and the intermediate sensors 32A and 32B, and the first body surface temperature Tb1 and the second body surface temperature Tb3 of the body surface 2A. The first intermediate temperature Tb2 and the second intermediate temperature Tb4 of the interfaces 301A and 301B are measured (step S5, first temperature measurement step and second temperature measurement step). The temperature information of the body surface temperatures Tb1 and Tb3 and the intermediate temperatures Tb2 and Tb4 is converted from analog signals to digital signals by the A / D converters 34A and 34B, and transmitted to the display device 4 by the transmission / reception means 35A and 35B. . The body surface temperatures Tb1 and Tb3 and the intermediate temperatures Tb2 and Tb4 are preferably measured after a predetermined time has elapsed so that heat transfer from the deep part of the human body 2 to the body surface 2A is in a steady state (equilibrium state).

  The deep temperature calculation means 441 of the control means 44 calculates the deep temperature Tcore from the body surface temperatures Tb1 and Tb3 and the intermediate temperatures Tb2 and Tb4 transmitted from the thermometer body 3 according to the equation (6) (step S6, deep temperature calculation). Process). The control unit 44 stores the temperature Tcore in the storage unit 45 (step S7) and displays the temperature Tcore on the display unit 42 (step S8). The operator 5 can check the temperature Tcore on the display unit 42 of the wristwatch type display device 4 while holding the infant.

The control means 44 counts the elapsed time from the measurement of the body surface temperatures Tb1 and Tb3 by a built-in timer and monitors whether or not a predetermined time has elapsed (step S9). When the elapsed time is equal to or longer than the predetermined time, the process returns to step S4, and the control means 44 transmits a measurement start signal to the thermometer body 3, and again measures the body surface temperatures Tb1, Tb3 and intermediate temperatures Tb2, Tb4.
In this way, body surface temperatures Tb1 and Tb3 and intermediate temperatures Tb2 and Tb4 are measured at predetermined time intervals to calculate the deep temperature Tcore and store it in the storage unit 45.

According to such a first embodiment, the following effects can be obtained.
(1) By obtaining the first body surface temperature Tb1 and the first intermediate temperature Tb2 from the temperature measuring means 3A, and obtaining the second body surface temperature Tb3 and the second intermediate temperature Tb4 from the temperature measuring means 3B, The deep part temperature calculation means 441 can calculate the temperature Tcore of the deep part of the human body 2. By using two temperature measuring means 3A and 3B having different thermal resistance values as a whole, body surface temperatures Tb1 and Tb3 and intermediate temperatures Tb2 and Tb4 in two kinds of temperature distributions (heat fluxes) can be measured. The temperature Tcore in the deep part can be calculated from only the measured temperature value. For this reason, compared with the case where the heat resistance value Rs from the deep part of the human body 2 to the surface layer part is set as a fixed value, the temperature Tcore in the deep part can be calculated more in line with the actual temperature distribution. Therefore, a more accurate deep temperature Tcore can be obtained, and the measurement accuracy of the thermometer 1 can be improved.
Further, the thermal resistance value Ru0 between the body surface temperature measurement position and the intermediate temperature measurement position is made common for the overall thermal resistance value, and the thermal resistance values Ru1 and Ru2 between the intermediate temperature measurement position and the outside air are changed. Depending on the value. Therefore, even if clothes or bedding comes into contact with the outside air side of the thermometer body 3, only the overall thermal resistance value changes, and the thermal resistance value Ru0 between the body surface temperature measurement position and the intermediate temperature measurement position does not change. Therefore, the influence on the measurement by these disturbances can be reduced.
Furthermore, since the deep part temperature calculation means 441 calculates the temperature Tcore of the deep part of the human body 2 using the fact that the heat flux from the deep part of the human body 2 to the outside air is constant, the heat flow is canceled as in a conventional thermometer. Therefore, the configuration of the thermometer 1 can be simplified. Thereby, size reduction of the thermometer 1 can be further promoted. And since the conventional heating means is not required, power saving of the thermometer 1 can be promoted, and since it is safe even if the thermometer 1 is stuck on the body surface 2A for a long time, the safety and handling of the thermometer 1 are improved. Can be made.

(2) Since the deep part temperature calculation means 441 has the above equation (6) as a calculation equation, the first body surface temperature Tb1, the first intermediate temperature Tb2, the second body surface temperature Tb3, and the second Once the intermediate temperature Tb4 is obtained, the deep temperature Tcore can be calculated by directly substituting these values. By measuring the body surface temperature Tb1, Tb3 and the intermediate temperatures Tb2, Tb4 at two locations, the thermal resistance value Rs + Rt of the portion from the deep part of the human body 2 to the body surface 2A can be eliminated in calculation, so this thermal resistance value Rs + Rt is used. There is no need, the calculation process can be simplified and the calculation process can be performed quickly. Therefore, the responsiveness of the thermometer 1 can be improved. Moreover, it is not necessary to measure the temperature of the deep part with a known thermometer or the like.

(3) Since the thermometer main body 3 is configured to be able to be integrally attached to the skin of the human body 2, there is no need to hold the thermometer 1 for a certain period of time as in the conventional measurement of armpit temperature or sublingual temperature. Therefore, the handleability of the thermometer main body 3 can be improved. In addition, since the thermometer main body 3 is configured so that it can be affixed integrally, the thermometer main body 3 makes good contact with the skin even if it moves a little, such as when used by infants, infants, and children. it can. Furthermore, the temperature Tcore in the deep part can be calculated even when clothes and bedding are in contact with the thermometer body 3. Therefore, even when it is desired to continuously monitor the temperature change over a long period of time, the measurement can be performed easily and accurately.
For example, when a woman measures the basal body temperature, the body temperature measurement method has many restrictions, such as having to measure in a resting state immediately after getting up, and the body temperature measurement is troublesome. However, if measured with the thermometer 1 of the present embodiment, the body temperature can be continuously measured with the thermometer attached to the body surface 2A for a long time, so if you go to sleep with the thermometer body 3 attached, The basal body temperature can be measured and the measurement of the basal body temperature can already be completed when getting up. Therefore, since the complexity of the body temperature measurement can be eliminated, it is possible to prevent forgetting the measurement even at home or at a travel destination, and the accurate basal body temperature can be reliably measured.
Moreover, since the thermometer 1 of this embodiment can always measure the body temperature of the human body 2, it is suitable for monitoring changes in body temperature of an inpatient, for example.

(4) Since the thermometer main body 3 and the display device 4 are configured separately and can be communicated by the transmission / reception means 35A, 35B, 41, the number of components mounted on the thermometer main body 3 to be brought into contact with the human body 2 is minimized. This can be suppressed, and the thermometer body 3 can be reduced in weight and size. Therefore, even if the thermometer main body 3 is pasted for a long time, there is no burden, so the portability of the thermometer main body 3 can be improved. Further, by providing the control means 44 having the deep temperature calculation means 441 on the display device 4 side, the thermometer body 3 can be further reduced in weight and size.
Since the transmission / reception means 35A, 35B, and 41 are configured to perform wireless communication using the antenna coils 36A, 36B, and 46, the wiring and the like do not get in the way, and the handleability of the thermometer 1 can be improved.
Furthermore, since the display device 4 is formed in a wristwatch shape, the operator 5 can visually recognize the display unit 42 by putting it on his arm. Therefore, since the display of the body temperature can be confirmed while holding the infant whose body temperature is to be measured as in this embodiment, the operability of the thermometer 1 can be improved.

(5) By transmitting radio waves from the antenna coil 46 of the display device 4, electromotive force can be generated in the antenna coils 36 </ b> A and 36 </ b> B of the thermometer body 3 by electromagnetic induction. Since the thermometer main body 3 is driven by this electromotive force, the thermometer main body 3 does not require a power source such as a battery, and the thermometer main body 3 can be further reduced in weight and size.

(6) Since the storage unit 45 can store information such as the deep temperature Tcore for a plurality of human bodies 2, the thermometer 1 can be used alternately by a plurality of people, and the convenience of the thermometer 1 can be improved. . Thereby, even when the thermometer 1 is used by a plurality of persons, the previous deep temperature Tcore of the subject person to be measured can be read from the storage unit 45, which is suitable for monitoring body temperature over a long period of time.

(7) Since the heat insulating material 37 between the body surface 2A and the interfaces 301A and 301B has a common thermal resistance value, the same material and the same thickness of the heat insulating material can be used, manufacturing is simple, and an integrated structure can be adopted. . Further, the distance L between the temperature measuring means 3A and the temperature measuring means 3B can also be fixed, and can be easily attached.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 6 shows a block configuration diagram of the thermometer 1 according to the present embodiment. The thermometer 1 includes a thermometer body 3 that contacts a body surface 2A (see FIG. 8) of a human body 2 (see FIG. 8) that is a living body, and a display device 4 that is provided separately from the thermometer body 3. .

FIG. 7 shows an enlarged view of the thermometer main body 3 attached to the human body 2, and FIG. 8 shows a figure where the thermometer main body 3 and the display device 4 are attached.
First, as shown in FIG. 7, the thermometer body 3 includes two (a pair) of temperature measuring means 3A and 3B which are first and second temperature measuring means. The temperature measuring means 3A has a contact surface 300A that contacts the body surface 2A of the human body 2, and a body surface sensor 31A as a first reference temperature measuring unit that measures the temperature of the body surface 2A as a first reference temperature. The outer surface sensor 33A serving as a first reference temperature measuring unit that has an outer surface 302A exposed to the outside air side of the temperature measuring means 3A and measures the temperature of the outer surface 302A as a first reference temperature, and a body surface sensor And a heat insulating material 37A as a first heat insulating material interposed between 31A and the outer surface sensor 33A.
The temperature measuring means 3B is provided separately from the temperature measuring means 3A, and has a contact surface 300B that contacts the body surface 2A at a position different from the contact position of the temperature measuring means 3A. The body surface sensor 31B as a second reference temperature measuring unit that measures the temperature of 2A as the second reference temperature, and the outer surface 302B exposed to the outside air of the temperature measuring means 3B, and the temperature of the outer surface 302B are An outer surface sensor 33B as a second reference temperature measuring unit that measures the second reference temperature, and a heat insulating material 37B as a second heat insulating material interposed between the body surface sensor 31B and the outer surface sensor 33B I have.

The heat insulating material 37A of the temperature measuring means 3A and the heat insulating material 37B of the temperature measuring means 3B are made of the same material with the same thermal conductivity λ and the same cross-sectional area. Here, the heat resistance value of the heat insulating material 37A and the heat resistance value of the heat insulating material 37B are set to different values by setting the thicknesses of the respective heat insulating materials to d and d ′. Therefore, the thermal resistance value ratio α is expressed by d / d ′. That is, by changing the thickness, the heat insulating material 37A and the heat insulating material 37B also serve as heat flux adjusting means.
Here, the heat insulating material 37A and the heat insulating material 37B may be made of different materials to serve as heat flux adjusting means, but in this case, it is necessary to measure the thermal resistance value of each heat insulating material in advance. As long as the heat insulating material is the same material as in the present embodiment, the thickness ratio only needs to be known.
Furthermore, if the heat insulating material is the same material, the thermal conductivity λ is the same, so the difference in contact thermal resistance between the temperature measuring means 3A and the temperature measuring means 3B with respect to the body surface is small.

The thermometer main body 3 including these temperature measuring means 3A and 3B is in close contact with the chest of an infant (human body 2) as in the first embodiment.
Here, the attachment position of the thermometer body 3 is set to a part such as the forehead, the back of the head, the chest, and the back where the skin temperature is hardly affected by the outside air in the human body 2 and the body surface temperature can be measured relatively stably. Is desirable. Further, when the temperature measuring means 3A and 3B are attached to the body surface 2A, the heat insulating materials 37A and 37B pass from the deep part of the human body 2 to the outer surfaces 302A and 302B through the body surface 2A and the heat insulating materials 37A and 37B. It is desirable to have a certain size so that the heat flux can be approximated to be constant in a steady state. That is, the dimensions of the heat insulating materials 37A and 37B are substantially orthogonal to the direction connecting the deep part of the human body 2 and the position of the body surface 2A to which the temperature measuring means 3A and 3B are attached when the heat transfer is in an equilibrium state. Direction, specifically along the body surface 2A, can be ignored, the heat transfer from the deep part of the human body 2 to the body surface 2A can be regarded as uniaxial direction, the heat flux is unidirectional It is desirable that the dimensions can be approximated when moving.

  The temperature measuring means 3A and the temperature measuring means 3B are arranged with a predetermined distance L from each other as in the first embodiment.

The body surface sensors 31A and 31B and the outer surface sensors 33A and 33B employ a sensor that converts the temperature of the body surface 2A or the temperature value of the outer surfaces 302A and 302B into a resistance value, or a sensor that converts a temperature value into a voltage value. it can. In addition, as what converts a temperature value into resistance value, what was mentioned by 1st embodiment is employable.
In addition to the body surface sensors 31A and 31B and the outer surface sensors 33A and 33B, the temperature measuring means 3A and 3B include A / D converters 34A and 34B and transmission / reception means 35A as shown in FIG. , 35B.
The A / D converters 34A and 34B convert analog signals of resistance values and voltage values converted by the body surface sensors 31A and 31B and the outer surface sensors 33A and 33B into digital signals and output them to the transmission / reception means 35A and 35B. . Alternatively, an RF converter using CR oscillation may be used instead of the A / D converters 34A and 34B.

  As shown in FIG. 8, the display device 4 is configured to be portable in a wristwatch type and can be worn by an operator 5 holding an infant wearing the thermometer body 3. As shown in FIG. 6, the display device 4 includes a transmission / reception means 41 that transmits and receives signals to and from the thermometer body 3, a display unit 42 that displays body temperature measurement results, and the display device 4 from the outside. An operation unit 43 to be operated, a control unit 44 for controlling the operation of the display device 4, and a storage unit 45 for accumulating information obtained from the transmission / reception unit 41, the control unit 44, and the like are provided.

  Since the transmission / reception means 35A, 35B, the transmission / reception means 41, the display unit 42, and the operation unit 43 are the same as those in the first embodiment, the description thereof is omitted.

  The control means 44 includes the first body surface temperature (first reference temperature) and the second body surface temperature (second reference temperature) from the body surface sensors 31A and 31B, and the outer surface sensors 33A and 33B. Based on the first outer surface temperature (first reference temperature) and the second outer surface temperature (second reference temperature), there is provided a deep temperature calculation means 441 for calculating the temperature of the deep portion of the human body 2. .

The deep part temperature calculation means 441 includes a first body surface temperature Tb1 obtained by the body surface sensor 31A, a first reference temperature Tb2 obtained by the outer surface sensor 33A, and a second body obtained by the body surface sensor 31B. The ratio α between the surface temperature Tb3, the second reference temperature Tb4 obtained by the outer surface sensor 33B, and the first thermal resistance value Ru1 of the temperature measuring means 3A and the second thermal resistance value Ru2 of the temperature measuring means 3B Using this, the temperature Tcore of the deep part of the human body 2 is calculated.
FIG. 9 shows a model of the temperature distribution from the deep part of the human body 2 through the body surface 2A and the thermometer body 3 to the outside air. Since the temperature distribution models of the temperature measuring unit 3A and the temperature measuring unit 3B are the same, FIG. 9 illustrates the temperature distribution model of the temperature measuring unit 3A.

As shown in FIG. 9, in the temperature transfer model from the deep part of the human body 2 to the outside air, the temperature Tcore of the deep part of the human body 2 is substantially constant. In the surface layer part on the outer shell side from the deep part, the body temperature falls due to the influence of the thermal resistance of the skin and the outside air temperature. Actually, there is a microscopic gap between the body surface 2A and the temperature measuring means 3A. Therefore, the temperature also decreases in the contact heat resistance portion due to heat release in this gap. Therefore, when the body temperature of the body surface 2A is actually measured by the temperature measuring means 3A, the first body surface temperature Tb1 lowered by the contact thermal resistance portion is measured.
Since the temperature measurement means 3A itself also has a thermal resistance (first thermal resistance value Ru1), a temperature drop also occurs in the temperature measurement means 3A, and the first outer surface temperature is generated on the outer surface 302A of the temperature measurement means 3A. Tb2. The outer surface sensor 33A measures the first outer surface temperature Tb2. Further, since heat is released at the outside air temperature contact portion between the outer surface 302A of the temperature measuring means 3A and the outside air, the temperature is lowered and finally becomes the outside air temperature Tamb.

  Here, when the horizontal axis is the thermal resistance and the vertical axis is the temperature, the gradient of the temperature distribution graph is the heat flux Q, and in a steady state, the heat flux Q in each part is constant. It is constant. At this time, if the first body surface temperature Tb1 and the first outer surface temperature Tb2 of the temperature measuring means 3A are known, the temperature is calculated by the following equation (7) using the first thermal resistance value Ru1 of the temperature measuring means 3A. The heat flux Qu1 from the surface on the body surface sensor 31A side of the measuring means 3A to the outer surface 302A can be calculated.

  On the other hand, the heat flux Qs + t in the portion including the surface layer portion and the contact thermal resistance portion, that is, the portion from the deep portion of the human body 2 to the body surface 2A (actually, the portion from the deep portion to the contact surface 300A) is When the body temperature Tcore and the thermal resistance Rs + Rt of the part from the deep part of the human body 2 to the body surface 2A are used, it is expressed by the following equation (8).

  Here, the thermal resistance value Rt of the contact thermal resistance portion depends on the nature of the substance intervening in the contact thermal resistance portion, as in the first embodiment, and the thermometer 1 that contacts the body surface 2A (heat insulating materials 37A, 37B, etc.) It also changes depending on the thermal resistance value.

  Since the heat flux Q is constant in each part, the heat flux Qu1 in the thermometer main body 3 and the heat flux Qs + t in the portion from the deep part of the human body 2 to the body surface 2A are equal (Qu1 = Qs + t). Therefore, the equations (7) and (8) are arranged as the following equation (9), and the deep temperature Tcore is obtained by this equation (9).

  Here, the thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A is an unknown value. Therefore, in the temperature measuring means 3B, if the second body surface temperature Tb3 and the second outer surface temperature Tb4 are obtained from the body surface sensor 31B and the outer surface sensor 33B in the same manner as the temperature measuring means 3A, Tcore is obtained by the following equation (10).

  Here, since the ratio α between the first thermal resistance value Ru1 of the temperature measuring means 3A and the second thermal resistance value Ru2 of the temperature measuring means 3B is known, the heat is calculated from the equations (9) and (10). When the resistance value Rs + Rt is eliminated, the temperature Tcore in the deep part is obtained by the following equation (11) using the ratio α.

  Therefore, the equation (11) is stored in the deep temperature calculation means 441 as a calculation equation for the deep temperature Tcore.

  Since what is memorize | stored in the memory | storage part 45 is the same as 1st embodiment, description is abbreviate | omitted.

Such a thermometer 1 operates as follows.
FIG. 10 shows a flowchart showing the operation of the thermometer 1 in the present embodiment.
The thermometer main body 3 is attached to the human body 2 (in this embodiment, the chest of the infant), and the operator 5 of the thermometer 1 holding the infant wears the display device 4 on the arm. When the operator 5 operates the operation unit 43 of the display device 4 and the switch of the display device 4 is turned on, the transmission / reception means 41 transmits radio waves to the thermometer main body 3 (temperature measurement means 3A and temperature measurement means 3B). . The thermometer main body 3 is charged by generating electromotive force in the antenna coils 36A and 36B by electromagnetic induction by the radio waves (step S1). The thermometer main body 3 is activated by the electromotive force (step S2), and the body surface sensors 31A and 31B and the outer surface sensors 33A and 33B are activated. When these sensors 31A, 31B, 33A, 33B are activated, the thermometer main body 3 transmits a standby signal from the transmission / reception means 35A, 35B to the display device 4 (step S3).

  When receiving the standby signal, the control means 44 of the display device 4 transmits a temperature measurement command signal from the transmission / reception means 41 (step S4). The thermometer main body 3 receives this temperature measurement command signal, drives the body surface sensors 31A and 31B and the outer surface sensors 33A and 33B, and the first body surface temperature Tb1 and the second body surface temperature of the body surface 2A. Tb3, and first outer surface temperature Tb2 and second outer surface temperature Tb4 of outer surfaces 302A and 302B are measured (step S5, first temperature measuring step and second temperature measuring step). The temperature information of these body surface temperatures Tb1, Tb3 and outer surface temperatures Tb2, Tb4 is converted from analog signals to digital signals by A / D converters 34A, 34B, and transmitted to display device 4 by transmission / reception means 35A, 35B. The The body surface temperatures Tb1, Tb3 and the outer surface temperatures Tb2, Tb4 are preferably measured after a predetermined time so that heat transfer from the deep part of the human body 2 to the body surface 2A is in a steady state (equilibrium state). .

  The deep temperature calculation means 441 of the control means 44 calculates the deep temperature Tcore from the body surface temperatures Tb1 and Tb3 and the outer surface temperatures Tb2 and Tb4 transmitted from the thermometer body 3 according to the equation (11) (step S6, deep temperature). Calculation process). The control unit 44 stores the temperature Tcore in the storage unit 45 (step S7) and displays the temperature Tcore on the display unit 42 (step S8). The operator 5 can check the temperature Tcore on the display unit 42 of the wristwatch type display device 4 while holding the infant.

The control means 44 counts the elapsed time from the measurement of the body surface temperatures Tb1 and Tb3 by a built-in timer and monitors whether or not a predetermined time has elapsed (step S9). When the elapsed time is equal to or longer than the predetermined time, the control unit 44 returns to step S4, and transmits a measurement start signal to the thermometer main body 3, and again measures the body surface temperatures Tb1, Tb3 and the outer surface temperatures Tb2, Tb4.
In this way, the body surface temperatures Tb1 and Tb3 and the outer surface temperatures Tb2 and Tb4 are measured at predetermined time intervals to calculate the deep temperature Tcore and accumulate it in the storage unit 45.

According to such a second embodiment, the following effects can be obtained in addition to the effects obtained in the first embodiment.
(8) The heat flux in the temperature measuring means 3A and the temperature measuring means 3B can be adjusted by changing the thermal resistance values of the heat insulating material 37A and the heat insulating material 37B. Therefore, the heat flux adjusting means is constituted by the heat insulating material 37A and the heat insulating material 37B, and does not need to be provided separately, and the structure can be simplified.
(9) Since the heat insulating material 37A and the heat insulating material 37B differ only in thickness, the ratio of the thickness is the thermal resistance value between the body surface sensor 31A and the outer surface sensor 33A, and the heat between the body surface sensor 31B and the outer surface sensor 33B. This corresponds to the ratio α to the resistance value. Therefore, the temperature of the deep part of the living body can be calculated using the thickness ratio.

[Third embodiment]
FIG. 11 shows a block diagram of the third embodiment. As shown in FIG. 11, the thermometer main body 3 includes heat flux measuring units 5A and 5B as part of the first and second temperature measuring means, and these heat flux measuring units 5A and 5B are configured as described above. The intermediate sensors 32A and 32B and the outer surface sensors 33A and 33B in the form are not provided, and a heat flux sensor 51A as a first heat flux measurement unit and a heat flux sensor 51B as a second heat flux measurement unit are provided. Each has. These heat flux sensors 51A and 51B measure the heat flux values in the thermometer 1 by bringing the heat flux measuring units 5A and 5B into contact with the body surface 2A. Here, each of the heat flux sensors 51A and 51B has a different thermal resistance value (first thermal resistance value and second thermal resistance value) between the body surface 2A and a predetermined section (for example, from the outer surface 302A). Embedded in the heat insulating material, the heat flux sensors 51A and 51B measure the heat flux Qu1 and Qu2 in the predetermined section.
The deep part temperature calculation means 441 stores one of the following formulas (12) and (13).

  In the thermometer 1 having such a configuration, the first heat flux measurement step of measuring the first body surface temperature Tb1 by the body surface sensor 31A and measuring the first heat flux value Qu1 by the heat flux measuring unit 5A is performed. Further, a second heat flux measuring step is performed in which the body surface sensor 31B measures the second body surface temperature Tb3 and the heat flux measuring unit 5B measures the second heat flux value Qu2. Thereafter, when these measured values are transmitted to the display device 4, in the deep temperature calculation step, the deep temperature calculation means 441 performs the first body surface temperature Tb1, the first heat flux value Qu1, the second Based on the body surface temperature Tb3 and the second heat flux value Qu2, the deep temperature Tcore is calculated.

According to such a third embodiment, the following effects can be obtained.
(10) Even with the thermometer 1 having such a configuration, the temperature Tcore in the deep part of the living body can be calculated from the actual measurement value, as in the above-described embodiment, so that a more accurate body temperature can be measured.
Here, as shown in the above formulas (12) and (13), the calculation formula for the deep temperature Tcore does not include the thermal resistance value. Therefore, the heat resistance values in the predetermined section in which the heat flux sensors 51A and 51B measure the heat flux need not be known and may be different from each other. That is, it is not necessary to set these thermal resistance values with high accuracy, and it is only necessary to use heat insulating materials having different thermal resistance values, so that selection of materials and production management are facilitated, and the thermometer 1 can be easily manufactured. Become.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described.
FIG. 12 shows a configuration block diagram of the thermometer 1 according to the present embodiment. FIG. 13 shows an enlarged view of the thermometer main body 3 attached to the human body 2. As shown in FIG. 12 and FIG. 13, the thermometer main body 3 has two (a pair) temperature measurement, that is, a temperature measurement means 3 </ b> A as a first temperature measurement means and a temperature measurement means 3 </ b> B as a second temperature measurement means. Means.
The temperature measuring means 3A has a contact surface 300A that contacts the body surface 2A of the human body 2, and a body surface sensor 31A as a first measuring unit that measures the temperature of the body surface 2A as a first body surface temperature. The outer surface sensor 33A as a first measuring unit that has an outer surface 302A exposed to the outside air side of the temperature measuring means 3A and measures the temperature of the outer surface 302A as a first outer surface temperature, and a body surface sensor An intermediate sensor 32A serving as a first measurement unit that is disposed in the center between 31A and the outer surface sensor 33A and measures the temperature at the position as a first intermediate temperature, and the sensors 31A, 33A, and 32A are attached and fixed. And a heat insulating material 37A.

  Further, the temperature measuring means 3B is provided separately from the temperature measuring means 3A, and has a contact surface 300B that contacts the second body surface 2A at a position different from the contact position of the temperature measuring means 3A. The body surface sensor 31B as a second measuring unit that measures the temperature of the body surface 2A as a second body surface temperature, and the outer surface 302B exposed to the outside air side of the temperature measuring means 3B, and the outer surface 302B The outer surface sensor 33B as a second measuring unit for measuring the temperature of the second outer surface temperature as a second outer surface temperature, and the center surface between the body surface sensor 31B and the outer surface sensor 33B, and the temperature at the position is set as the second intermediate temperature. As an intermediate sensor 32B as a second measurement unit, and a heat insulating material 37B to which the sensors 31B, 33B, 32B are attached and fixed.

The thermometer body 3 composed of these temperature measuring means 3A and 3B is configured to be able to adhere to the body surface 2A with a good contact pressure as in the first embodiment. Also, the temperature measuring means 3A and the temperature measuring means 3B Are arranged with a predetermined distance L from each other as in the first embodiment.
Further, the heat insulating material 37A of the temperature measuring means 3A and the heat insulating material 37B of the temperature measuring means 3B are made of different materials, whereby the heat resistance value RuA2 of the heat insulating material 37A and the heat resistance value RuB2 of the heat insulating material 37B are It is set to a different value. Further, by setting the distances from the contact surfaces 300A, 300B to the intermediate sensors 32A, 32B, the thermal resistance values from the contact surfaces 300A, 300B to the intermediate sensors 32A, 32B become predetermined values set in advance. In the present embodiment, the thermal resistance values up to the intermediate sensors 32A and 32B are set to the thermal resistance value RuA1 and the thermal resistance value RuB1, respectively.
In the fourth embodiment, the control unit 44 includes a temperature distribution calculation unit 442 and a deep temperature calculation unit 441.

FIG. 14 shows a temperature distribution model of the temperature measuring means 3A, 3B. As shown in FIG. 14, since the thermal resistance value of the temperature measuring means 3A and the thermal resistance value of the temperature measuring means 3B are different from each other, the heat fluxes from the deep part of the human body 2 to the outside air are different, and therefore the temperature distribution T ( R) are also different from each other.
In the temperature measurement means 3A, the temperature distribution calculation means 442 is the body surface temperature Tb1 at the thermal resistance value (R = 0), the intermediate temperature Tb2 at the thermal resistance value (R = RuA1), and the thermal resistance value (R = RuA2). From the outer surface temperature Tb5, the first temperature distribution TA (R) is calculated using the equation (14) of the seventh embodiment. Similarly, in the temperature measuring means 3B, the temperature distribution calculating means 442 also includes the body surface temperature Tb3 at the thermal resistance value (R = 0), the intermediate temperature Tb4 at the thermal resistance value (R = RuB1), and the thermal resistance value ( From the outer surface temperature Tb6 at R = RuB2), a second temperature distribution TB (R) is calculated.
The deep part temperature calculation means 441 calculates the temperature Tcore of the deep part by obtaining the intersection of these temperature distribution TA (R) and temperature distribution TB (R) simultaneously.

  Therefore, in the fourth embodiment, since the temperature Tcore of the deep part of the human body 2 is obtained from the two temperature distributions TA (R) and temperature distribution TB (R), the body temperature such as measuring the temperature of the deep part in advance with a known thermometer. A measurement preparation step is not required. That is, in the thermometer 1 of the fourth embodiment, when a temperature measurement command signal is transmitted from the control means 44 to the thermometer main body 3, the temperature information from each sensor 31A, 32A, 33A, 31B, 32B, 33B is converted to the control means 44. Sent to. The temperature distribution calculating means 442 calculates the temperature distribution TA (R) and the temperature distribution TB (R) from these temperature information. The deep temperature calculation means 441 calculates the deep temperature Tcore from the temperature distribution TA (R) and the temperature distribution TB (R).

According to such a fourth embodiment, the following effects can be obtained.
(11) Since the thermometer 1 includes the two temperature measuring means 3A and 3B, the temperature distribution means TA (R) and the temperature distribution TB (R) respectively obtained by the temperature distribution calculating means 442 are used to calculate the deep temperature calculating means. In 441, the deep temperature Tcore can be calculated. That is, since it is not necessary to calculate the surface layer thermal resistance value Rs, the configuration of the control means 44 can be simplified and the arithmetic processing can be performed quickly. Therefore, the responsiveness of the thermometer 1 can be improved.
Since the thermometer 1 includes two temperature measuring means 3A and 3B, the temperature of the deep portion can be directly calculated using the temperature distribution TA (R) and the temperature distribution TB (R). Therefore, it is not necessary to previously measure the temperature of the deep part with a known thermometer or the like, and a preparation process for measuring the body temperature becomes unnecessary. Therefore, the body temperature measurement time of the thermometer 1 can be shortened, and the handleability of the thermometer 1 can be improved.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described. The fifth embodiment is the same as the fourth embodiment except that the first measurement unit and the second measurement unit in the fourth embodiment share the same thermal resistance value.

FIG. 15 shows the thermometer main body 3 of the fifth embodiment. In FIG. 15, the thermometer main body 3 includes temperature measuring means 3A and 3B as in the fourth embodiment.
The temperature measuring means 3A includes a heat insulating material 37 having a contact surface 300A that contacts the body surface 2A of the human body 2, and a heat insulating material 38A as a first heat insulating material provided between the heat insulating material 37 and the outside air. ing. On the other hand, the temperature measuring means 3B includes a heat insulating material 37 having a contact surface 300B that contacts the body surface 2A at a position different from the contact position of the temperature measuring means 3A, and a second provided between the heat insulating material 37 and the outside air. And a heat insulating material 38B as a heat insulating material. That is, the heat insulating material 37 is common to the temperature measuring means 3A and the temperature measuring means 3B, and thus has a common thermal resistance value Ru0.

The temperature measuring means 3A includes a body surface sensor 31A that contacts the body surface 2A and measures the temperature of the body surface 2A, an interface sensor 39A that measures the temperature of the interface 301A between the heat insulating material 37 and the heat insulating material 38A, and a body surface sensor. An intermediate sensor 32A provided between 31A and the interface sensor 39A is provided. Similarly to the temperature measuring unit 3A, the temperature measuring unit 3B includes a body surface sensor 31B, an interface sensor 39B that measures the temperature of the interface 301B between the heat insulating material 37 and the heat insulating material 38B, and an intermediate sensor 32B. .
The thermal resistance values from the body surface 2A to the intermediate sensors 32A and 32B are known values, which are set to the thermal resistance value RuA1 and the thermal resistance value RuB1, respectively. In this embodiment, the thermal resistance values RuA1 and RuB1 are set to the same value (RuA1 = RuB1) by making the installation distances of the intermediate sensors 32A and 32B from the body surface 2A equal.
On the other hand, the heat resistance values of the heat insulating material 38A and the heat insulating material 38B are set to different values. Therefore, the temperature measuring means 3A and 3B have different heat resistance values as a whole. The thermal resistance values up to 31A and 31B, the thermal resistance values up to the intermediate sensors 32A and 32B, and the thermal resistance values up to the interface sensors 39A and 39B are set equal to each other.

  In the fifth embodiment, similar to the fourth embodiment, the temperature distribution calculating means 442 calculates two temperature distributions TA (R) and temperature distribution TB (R), and the deep temperature calculating means 441 The deep temperature Tcore is calculated from the temperature distribution TA (R) and the temperature distribution TB (R). At this time, since the thermal resistance values of the temperature measuring means 3A and 3B as a whole are different, the heat fluxes flowing inside are different, and the temperature distribution TA (R) and the temperature distribution TB (R) are also different. However, the thermal resistance value (R = 0) to the body surface sensors 31A and 31B, the thermal resistance value to the intermediate sensors 32A and 32B (R = RuA1 = RuB1), and the thermal resistance value to the interface sensors 39A and 39B (R = Ru2) are set to be equal to each other. Therefore, when the deep temperature calculation means 441 calculates the temperature of the deep portion, these common thermal resistance values are eliminated in the calculation. The deep temperature Tcore can be calculated without using it. That is, the body surface temperatures Tb1 and Tb3 measured by the body surface sensors 31A and 31B, the intermediate temperatures Tb2 and Tb4 measured by the intermediate sensors 32A and 32B, and the interface temperatures Tb5 and Tb6 measured by the interface sensors 39A and 39B. The temperature Tcore in the deep part is measured only from the measured value.

According to the fifth embodiment, in addition to the same effect as the effect (11) of the fourth embodiment, the following effect can be obtained.
(12) Since the temperature measuring means 3A and 3B are disposed on the common heat insulating material 37, the temperature measuring means 3A and 3B can be configured integrally, so that the handleability of the thermometer 1 can be improved. .
While the temperature measuring means 3A and 3B have different thermal resistance values as a whole, the thermal resistance values at the positions of the body surface sensors 31A and 31B, the thermal resistance values at the positions of the intermediate sensors 32A and 32B, and the interface sensors 39A and 39B Since the thermal resistance values at the positions are equal to each other, these thermal resistance values are erased in the calculation of the temperature of the deep part by the deep part temperature calculation means 441. Therefore, the calculation process in the deep temperature calculation means 441 is simplified, and the calculation process can be performed quickly.

Further, since each thermal resistance value is not required when calculating the temperature of the deep part, the temperature measuring means 3A, 3B have different thermal resistance values as a whole, and the thermal resistance at the position of the body surface sensors 31A, 31B. If the value, the thermal resistance value at the positions of the intermediate sensors 32A and 32B, and the thermal resistance value at the positions of the interface sensors 39A and 39B are equal, it is not necessary to strictly manage the set value. Therefore, since it is not necessary to strictly manage the thermal resistance value when manufacturing the thermometer 1, manufacturing management of the thermometer 1 can be simplified.
Further, for example, if the clothing is worn on the thermometer 1 and the clothing touches the thermometer 1 or the bedding touches when the thermometer 1 is worn and lies on the bedding, the thermal resistance values of the temperature measuring means 3A and 3B are increased. Although it changes, as long as the overall thermal resistance values of the temperature measuring means 3A and 3B are different from each other, the temperature in the deep part can be measured accurately. Therefore, restrictions on postures and clothes while wearing the thermometer 1 can be reduced, and the handleability of the thermometer 1 can be improved.

[Sixth embodiment]
Hereinafter, a sixth embodiment of the present invention will be described with reference to the drawings.
FIG. 16 is a block diagram of the thermometer 1 according to the present embodiment. The thermometer 1 includes a thermometer main body 3 that comes into contact with the body surface of a human body 2 (see FIG. 17) that is a living body, and a display device 4 that is provided separately from the thermometer main body 3.

FIG. 17 shows a view in which the thermometer body 3 is mounted on the human body 2, and FIG. 18 shows a view in which the thermometer body 3 and the display device 4 are mounted.
First, as shown in FIG. 17, the thermometer main body 3 is in contact with the body surface 2 </ b> A of the human body 2, and a body surface sensor 31 as a reference temperature measuring unit that detects the temperature of the body surface 2 </ b> A, and the thermometer main body 3. The outer surface 30 exposed to the outside air side, and the outer surface sensor 33 as a reference temperature measuring unit for detecting the temperature of the outer surface 30, and the heat insulation interposed between the body surface sensor 31 and the outer surface sensor 33. The material 37 is provided. The thermometer main body 3 can be attached to the human body 2 with a surface on the body surface sensor 31 side using an adhesive or the like so that the thermometer main body 3 can be in close contact with the body surface 2A with a good contact pressure. It is configured. In the present embodiment, the thermometer main body 3 is in close contact with the forehead of the infant (human body 2).

  Here, the attachment position of the thermometer main body 3 may be set to a part such as the forehead, the back of the head, the chest, and the back where the skin temperature is hardly affected by the outside air in the human body and the body surface temperature can be measured relatively stably. desirable. Further, when the thermometer body 3 is affixed to the body surface 2A, the heat insulator 37 approximates that the heat flux from the deep part of the human body 2 through the body surface 2A and the heat insulator 37 to the outer surface 30 is constant in a steady state. For example, the heat insulating material 37 may be formed in a substantially rectangular shape having dimensions of 10 cm in length and width. In this case, the movement of heat in a direction substantially orthogonal to the direction connecting the deep part of the human body 2 and the position of the body surface 2A to which the thermometer body 3 is attached, specifically, the direction along the body surface 2A can be ignored. Since the heat transfer from the deep part of the human body 2 to the body surface 2A can be regarded as being uniaxial and linearity is obtained in the heat transfer, it can be approximated that the heat flux is constant.

As the body surface sensor 31 and the outer surface sensor 33, those described in the first embodiment can be adopted.
In addition to the body surface sensor 31 and the outer surface sensor 33, the thermometer main body 3 includes an A / D converter 34 and a transmission / reception means 35 as shown in FIG.
The A / D converter 34 converts the analog signal of the resistance value or voltage value converted by the body surface sensor 31 and the outer surface sensor 33 into a digital signal and outputs the digital signal to the transmission / reception means 35.
The transmission / reception means 35 includes an antenna coil 36, and transmits a signal of a temperature value (resistance value or voltage value) converted into a digital signal by the A / D converter 34 to the display device 4 side.

  As shown in FIG. 18, the display device 4 is configured to be portable as a wristwatch, and can be worn by an operator 5 holding an infant wearing the thermometer main body 3. As shown in FIG. 16, the display device 4 includes a transmission / reception means 41 that transmits and receives signals to and from the thermometer body 3, a display unit 42 that displays temperature measurement results, and the display device 4 from the outside. An operation unit 43 to be operated, a control unit 44 for controlling the operation of the display device 4, and a storage unit (storage unit) 45 for accumulating information obtained from the transmission / reception unit 41, the control unit 44, and the like.

  The transmission / reception means 41 includes an antenna coil 46 and transmits / receives radio waves to / from the antenna coil 36 of the thermometer body 3. Further, the antenna coil 46 transmits an electric wave to the antenna coil 36 to generate an electromotive force in the antenna coil 36 by electromagnetic induction, thereby charging the thermometer body 3. For this reason, the thermometer main body 3 is driven by this electromotive force and does not require a power source such as a battery.

  Since the display part 42 and the operation part 43 are the same as that of 1st embodiment, description is abbreviate | omitted.

  The control means 44 calculates the heat flux from the body surface 2A to the outer surface 30 based on the body surface temperature from the body surface sensor 31 and the outer surface temperature from the outer surface sensor 33, and calculates the heat flux from the body surface 2A to the outer surface 30. And based on the calculated heat flux, based on the thermal resistance value calculated by the thermal resistance calculator 443 that calculates the thermal resistance value from the deep part of the human body 2 to the body surface 2A, and this thermal resistance calculator 443 And a deep part temperature calculating means 441 for calculating the temperature of the deep part of the human body 2.

The heat flux calculating means 444 calculates a heat flux Qu flowing between the body surface 2A and the outer surface 30 from the body surface temperature Tb1 measured by the body surface sensor 31 and the outer surface temperature Tb2 measured by the outer surface sensor 33. calculate.
FIG. 19 shows a model of the temperature distribution from the deep part of the human body 2 through the body surface 2A and the thermometer body 3 to the outside air. As shown in FIG. 19, in the temperature transfer model from the deep part of the human body 2 to the outside air, the temperature Tcore of the deep part of the human body 2 is substantially constant. In the surface layer part on the outer shell side from the deep part, the body temperature falls due to the influence of the thermal resistance of the skin and the outside air temperature. Further, since a gap is generated microscopically between the body surface 2A and the thermometer body 3, the temperature also decreases in the contact heat resistance portion due to heat release in this gap. Note that when the body temperature of the body surface 2A is actually measured by the thermometer body 3, the temperature Tb1 lowered by the contact thermal resistance portion is measured.
Since the thermometer main body 3 itself also has thermal resistance, a temperature drop occurs in the thermometer main body 3, and the temperature Tb <b> 2 is reached on the outer surface 30 of the thermometer main body 3. The outer surface sensor 33 measures this temperature Tb2. Furthermore, since there is heat release at the outside air temperature contact portion between the outer surface 30 of the thermometer body 3 and the outside air, the temperature is lowered and finally becomes the outside air temperature Tamb.

  Here, when the horizontal axis is the thermal resistance and the vertical axis is the temperature, the slope of the temperature distribution graph is the heat flux Q, and in a steady state, the heat flux Q in each part is constant. It is constant. At this time, the thermal resistance value Ru0 of the thermometer body 3 is known to be almost equal to the thermal resistance value of the heat insulating material 37. Therefore, if the body surface temperature Tb1 and the outer surface temperature Tb2 of the thermometer body 3 are known, Qu can be calculated.

The thermal resistance calculation means 443 calculates the thermal resistance value Rs + Rt in the part from the deep part of the human body 2 to the body surface 2A using the heat flux Qu obtained by this mathematical formula 1 as follows.
The heat flux Qs + t in the part including the surface layer part and the contact thermal resistance part, that is, the part from the deep part of the human body 2 to the body surface 2A is expressed by the following equation using the body temperature Tcore and the thermal resistance Rs + Rt in the deep part of the human body 2. The

Here, since the heat flux Q is constant in each part, the heat flux Qu in the thermometer main body 3 and the heat flux Qs + t in the part from the deep part of the human body 2 to the body surface 2A are equal. Therefore, these equations are arranged as follows:
As shown in this equation, the calculation body surface temperature T0, b1 for calculating the thermal resistance measured by the body surface sensor 31 and the calculation outer surface temperature T0 for calculating the thermal resistance measured by the outer surface sensor 33 are calculated. , b2 and the calculation depth body temperature T0, core of the deep portion for calculating the thermal resistance, the surface layer thermal resistance value Rs + Rt of the portion from the deep portion to the body surface 2A can be obtained.

  When actually measuring the body temperature of the human body 2, the deep part temperature calculation means 441 uses the surface layer thermal resistance value Rs + Rt calculated by the thermal resistance calculation means 443 and the body surface temperature Tb1 obtained by the body surface sensor 31 and From the outer surface temperature Tb2 obtained by the outer surface sensor 33, the temperature Tcore in the deep part is calculated from the following equation.

The storage unit 45 stores the body surface temperature Tb1 and the outer surface temperature Tb2 transmitted from the thermometer body 3. In addition, the surface layer thermal resistance value Rs + Rt of the portion from the deep part of the human body 2 to the body surface 2A calculated by the thermal resistance calculating unit 443, the temperature Tcore of the deep part of the human body 2 calculated by the deep temperature calculating unit 441, and the like are stored. The
Here, the memory | storage part 45 is comprised so that the temperature information regarding the several human body 2 can be memorize | stored, and surface layer part thermal resistance value Rs + Rt, the temperature Tcore of a deep part, etc. are memorize | stored for every human body 2. FIG. The storage unit 45 can store measurement positions such as the calculation body surface temperature T0, b1 and the calculation reference temperature T0, b2 measured when calculating the surface layer thermal resistance value Rs + Rt. In addition to the above-described temperature information, the storage unit 45 may store measurement information such as the name, age, measurement date and time of the person to be measured (human body 2, infant), for example. In this case, the measurement information may be input from the operation unit 43.

Such a thermometer 1 operates as follows.
FIG. 20 shows a flowchart showing the operation of the thermometer 1 in the present embodiment. As shown in FIG. 20, in order to measure the body temperature of the human body 2 with the thermometer 1, first, a body temperature measurement preparation step for calculating the surface layer thermal resistance value Rs + Rt from the deep part of the human body 2 to the body surface 2A is performed. .
The thermometer main body 3 is attached to the human body 2 (in this embodiment, the forehead of the infant), and the operator 5 of the thermometer 1 holding the infant wears the display device 4 on the arm. When the operator 5 operates the operation unit 43 of the display device 4 to switch on the display device 4, the transmission / reception means 41 transmits radio waves to the thermometer body 3. The thermometer main body 3 is charged by generating an electromotive force in the antenna coil 36 by electromagnetic induction by this radio wave (step S11). The thermometer main body 3 is activated by the electromotive force (step S12), and the body surface sensor 31 and the outer surface sensor 33 are activated. When these sensors 31 and 33 are activated, the thermometer main body 3 transmits a standby signal from the transmitting / receiving means 35 to the display device 4 (step S13).

  When receiving the standby signal, the control means 44 of the display device 4 transmits a temperature measurement command signal from the transmission / reception means 41 (step S14). The thermometer main body 3 receives this temperature measurement command signal, drives the body surface sensor 31 and the outer surface sensor 33, and calculates the body surface temperature T0, b1 for the body surface 2A and the calculation outside air temperature T0 for the outer surface 30. , b2 are measured (steps S15 and S16, temperature measurement process for calculating thermal resistance). The temperature information of the calculation body surface temperature T0, b1 and the calculation outside air temperature T0, b2 is converted from an analog signal to a digital signal by the A / D converter 34 and transmitted to the display device 4 by the transmission / reception means 35. (Step S17). The calculation body surface temperature T0, b1 and the calculation outside air temperature T0, b2 are preferably measured after a predetermined time has elapsed so that heat transfer from the deep part of the human body 2 to the body surface 2A is in a steady state.

  Here, the control means 44 needs to determine whether to calculate the surface layer thermal resistance value Rs + Rt using the temperature information obtained from the body surface sensor 31 and the outer surface sensor 33 or to calculate the temperature of the deep part. is there. For this reason, the control means 44 is provided with a selection means (not shown). For example, the selection unit displays a selection screen for selecting either “body temperature measurement preparation mode” or “body temperature measurement mode” on the display unit 42, and the operator 5 operates either the operation unit 43 or the like. It suffices that the mode is selected. Here, the operator 5 may select the body temperature measurement preparation mode and instruct the control means 44 to calculate the surface layer thermal resistance value Rs + Rt using the temperature information. The control means 44 of the display device 4 calculates the heat flux Qs + r by the heat flux calculation means 444 based on the calculation body surface temperature T0, b1 and the calculation outer surface temperature T0, b2 transmitted from the thermometer body 3 (step). S18, heat flux calculation step).

Next, the display device 4 displays a screen for requesting the display unit 42 to input the calculation depth temperature T0, core, which is the temperature of the thermal resistance calculation depth. The operator 5 operates the operation unit 43 to input the measured calculation deep temperature T0, core. Thereby, the display apparatus 4 acquires the calculation deep temperature T0, core (step S19). The calculation deep temperature T0, core may be measured by a known thermometer that measures the armpit temperature, the sublingual temperature, and the like.
The thermal resistance calculation means 443 of the control means 44 uses the acquired calculation depth temperature T0, core and the heat flux Qs + r calculated by the heat flux calculation means 444 to obtain the surface layer from the deep portion of the human body 2 to the body surface 2A according to Equation 3. A partial thermal resistance value Rs + Rt is calculated (step S20, thermal resistance calculation step). The control unit 44 stores the calculated surface layer thermal resistance value Rs + Rt in the storage unit 45 (step S21, storage step), and the preparation for body temperature measurement is completed.

Next, the operation of the thermometer 1 in the body temperature measurement step when actually measuring the body temperature of the human body 2 will be described.
FIG. 21 is a flowchart showing the operation of the thermometer 1. In FIG. 21, when the body temperature of the human body 2 is measured by the thermometer 1, first, the thermometer main body 3 is electromagnetically induced in the antenna coil 36 by the radio wave from the antenna coil 46 of the display device 4 as in step S11 described above. Is charged (step S31). When the sensors 31 and 33 of the thermometer main body 3 are activated (step S32), the thermometer main body 3 transmits a standby signal to the display device 4 (step S33). Accordingly, the display device 4 determines that the thermometer body 3 is ready to measure the body temperature, and reads the surface layer thermal resistance value Rs + Rt of the human body 2 from the storage unit 45 (step S34). Then, a body temperature measurement start signal is transmitted to the thermometer body 3 via the transmission / reception means 41 (step S35).

The thermometer main body 3 receives the measurement start signal from the display device 4, and starts the measurement of the body surface temperature Tb1 of the body surface 2A by the body surface sensor 31 and the measurement of the outer surface temperature Tb2 by the outer surface sensor 33 (step). S36, temperature measurement step). The temperature values Tb1 and Tb2 detected by the body surface sensor 31 are converted into digital signals by the A / D converter 34 and then transmitted to the display device 4 by the transmission / reception means 35.
The control means 44 needs to select the “body temperature measurement mode” by the selection means described above in order to calculate the body temperature at the deep part using the temperature information from the body surface sensor 31 and the outer surface sensor 33. .
The deep temperature calculation means 441 of the control means 44 calculates the deep temperature Tcore from the body surface temperature Tb1 and the outer surface temperature Tb2 transmitted from the thermometer main body 3 by the above-described formula shown in the present embodiment (step S37, deep part). Temperature calculation step). The control unit 44 stores the temperature Tcore in the storage unit 45 (step S38) and displays the temperature Tcore on the display unit 42 (step S39). The operator 5 can check the temperature Tcore on the display unit 42 of the wristwatch type display device 4 while holding the infant.

The control means 44 counts the elapsed time from the measurement of the body surface temperature Tb1 by a built-in timer, and monitors whether or not a predetermined time has elapsed (step S40). When the elapsed time is equal to or longer than the predetermined time, the control unit 44 returns to step S35, and transmits a measurement start signal to the thermometer main body 3, and again measures the body surface temperature Tb1 and the outer surface temperature Tb2.
In this way, the body surface temperature Tb1 and the outer surface temperature Tb2 are measured every predetermined time, the deep temperature Tcore is calculated, and stored in the storage unit 45.

It should be noted that the surface layer thermal resistance value Rs + Rt does not change greatly unless there is a special circumstance such as a sudden change in the body shape of the human body 2, so the calculation of the heat flux Qs + r by the heat flux calculation means 444 and the thermal resistance The calculation of the surface layer thermal resistance value Rs + Rt by the calculation means 443 may be performed once at the start of the measurement of the body temperature. If the heat transfer characteristics of the human body 2 change due to a sudden change in body shape, etc., the temperature data T0, core of the deep part is acquired once again, and the body surface temperature Tb1 and the outer surface temperature Tb2 are measured to The bundle Qs + r and the surface layer thermal resistance value Rs + Rt may be calculated.
In addition, since the surface layer thermal resistance value Rs + Rt specific to the human body 2 has a small change, even when the thermometer 1 is used again, the previously calculated surface layer thermal resistance value Rs + Rt can be used. At the time of measurement, the time until the start of body temperature measurement can be shortened. In this case, if the surface layer thermal resistance value Rs + Rt for a plurality of human bodies 2 is stored in the storage unit 45, the surface layer thermal resistance value Rs + Rt previously calculated by operating the operation unit 43 is read and reused. Can do. In this case, when performing a body temperature measurement process, the living body selection for specifying the human body 2 may be performed by the operation unit 43.

According to the sixth embodiment, in addition to the effects (3) and (5) of the first embodiment, the following effects can be obtained.
(13) The thermal resistance calculating means 443 includes a calculation body surface temperature T0, b1, a calculation outer surface temperature T0, b2 of the human body 2, a known thermal resistance value Ru0 such as the heat insulating material 37, and a calculation deep temperature T0, Since the surface layer thermal resistance value Rs + Rt is calculated based on the core, the surface layer thermal resistance value Rs + Rt corresponding to the heat transfer characteristics of the human body 2 can be obtained. The deep part temperature calculation means 441 calculates the deep part temperature Tcore based on the surface layer thermal resistance value Rs + Rt, so that it is not affected by the difference in the body shape of the human body 2 and the like, according to the heat transfer characteristics of the human body 2. Deep body temperature Tcore can be calculated accurately.
In addition, by utilizing the fact that the heat flux from the deep part of the human body 2 to the outside air is constant, the thermal resistance calculation means 443 calculates the surface layer thermal resistance value Rs + Rt of the human body 2, so that the heat flow is as in a conventional thermometer. Since a heating means such as a heater for canceling is not required, the configuration of the thermometer 1 can be simplified. Thereby, size reduction of the thermometer 1 can be further promoted. And since the conventional heating means is not required, power saving of the thermometer 1 can be promoted, and since it is safe even if the thermometer 1 is stuck on the body surface 2A for a long time, the safety and handling of the thermometer 1 are improved. Can be made.

(14) Since the thermometer main body 3 and the display device 4 are configured separately and can be communicated by the transmission / reception means 35 and 41, the number of components mounted on the thermometer main body 3 to be brought into contact with the human body 2 can be minimized. The thermometer body 3 can be reduced in weight and size. Therefore, even if the thermometer main body 3 is pasted for a long time, there is no burden, so the portability of the thermometer main body 3 can be improved. Further, by providing the display device 4 with the control means 44 including the thermal resistance calculation means 443 and the deep temperature calculation means 441, the thermometer body 3 can be further reduced in weight and size.
Since the transmission / reception means 35 and 41 are configured to perform wireless communication by the antenna coils 36 and 46, the wiring and the like do not get in the way, and the handleability of the thermometer 1 can be improved.
Furthermore, since the display device 4 is formed in a wristwatch shape, the operator 5 can visually recognize the display unit 42 by putting it on his arm. Therefore, since the display of the body temperature can be confirmed while holding the infant whose body temperature is to be measured as in this embodiment, the operability of the thermometer 1 can be improved.

(15) Since the surface layer thermal resistance value Rs + Rt is stored in the storage unit 45, the stored surface layer thermal resistance value Rs + Rt can be read and used in the body temperature measurement step. For this reason, it is not necessary to perform the body temperature measurement preparation step and the body temperature measurement step continuously, and the surface layer thermal resistance value Rs + Rt can be calculated in advance. Therefore, the handleability of the thermometer 1 can be improved, and the measurement time in the body temperature measurement process can be shortened. Moreover, since the memory | storage part 45 can memorize | store the surface layer part thermal resistance value Rs + Rt of the several human body 2, the thermometer 1 can also be used by several persons alternately, and the convenience of the thermometer 1 can be improved.

[Seventh Embodiment]
FIG. 22 is a block diagram of the thermometer 1 according to the present embodiment. The thermometer 1 includes a thermometer main body 3 as temperature measuring means that contacts the body surface of a human body 2 (see FIG. 23) that is a living body, and a display device 4 that is provided separately from the thermometer main body 3.

FIG. 23 shows a view in which the thermometer body 3 is attached to the human body 2, and FIG. 24 shows a view in which the thermometer body 3 and the display device 4 are attached.
First, as shown in FIG. 23, the thermometer main body 3 has a contact surface 300 that comes into contact with the body surface 2A of the human body 2, and includes a body surface sensor 31 as a measuring unit that detects the temperature of the body surface 2A, and a thermometer. It has an outer surface 30 exposed on the outside air side of the main body 3, and is disposed at an intermediate position between the outer surface sensor 33 as a measuring unit that detects the temperature of the outer surface 30, and the body surface sensor 31 and the outer surface sensor 33. The body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33 are attached to and fixed to a heat insulating material 37. The thermometer main body 3 can be attached to the human body 2 with a surface on the body surface sensor 31 side using an adhesive or the like so that the thermometer main body 3 can be in close contact with the body surface 2A with a good contact pressure. It is configured.

Here, the attachment position of the thermometer main body 3 may be set to a part such as the forehead, the back of the head, the chest, and the back where the skin temperature is hardly affected by the outside air in the human body and the body surface temperature can be measured relatively stably. desirable. In the present embodiment, the thermometer main body 3 is attached to the chest of an infant (human body) 2.
In addition, when the thermometer 37 is attached to the body surface 2A, the heat flux from the deep part of the human body 2 to the outer surface 30 through the body surface 2A and the heat insulator 37 is affected by the external environment. For example, it is conceivable that the heat insulating material 37 is formed in a substantially rectangular shape having a dimension of 10 cm in length and width.

  The heat resistance value Ru0 of the heat insulating material 37 is set to a predetermined value by selecting an appropriate material. Therefore, the heat resistance value from the contact surface 300 to the outer surface sensor 33 is the heat resistance value of the heat insulating material 37. It is almost equal to the resistance value and becomes the thermal resistance value Ru0. The thermal resistance value from the contact surface 300 to the intermediate sensor 32 is a predetermined value that can be set according to the distance from the contact surface 300 to the position where the intermediate sensor 32 is provided. In this embodiment, the thermal resistance value RuO1. Is set to

As the body surface sensor 31, the outer surface sensor 33, and the intermediate sensor 32, the one that converts the temperature value shown in the first embodiment into a resistance value, the one that converts the temperature value into a voltage value, or the like can be adopted.
In addition to the body surface sensor 31, the outer surface sensor 33, and the intermediate sensor 32, the thermometer main body 3 includes an A / D converter 34 and a transmission / reception means 35 as shown in FIG. Yes.
The A / D converter 34 converts the analog signal of the resistance value or voltage value converted by the body surface sensor 31, the outer surface sensor 33, and the intermediate sensor 32 into a digital signal and outputs the digital signal to the transmission / reception means 35. Alternatively, an RF converter using CR oscillation may be used instead of the A / D converter 34.
The transmission / reception means 35 includes an antenna coil 36, and transmits a signal of a temperature value (resistance value or voltage value) converted into a digital signal by the A / D converter 34 to the display device 4 side.

  As shown in FIG. 24, the display device 4 is configured to be portable in a wristwatch type and can be worn by an operator 5 holding an infant wearing the thermometer body 3. As shown in FIG. 22 described above, the display device 4 includes a transmission / reception means 41 that transmits and receives signals to and from the thermometer main body 3, a display unit 42 that displays measurement results of the body temperature, and the display device 4 from the outside. An operation unit 43 to be operated, a control unit 44 for controlling the operation of the display device 4, and a storage unit (storage unit) 45 for accumulating information obtained from the transmission / reception unit 41, the control unit 44, and the like.

  Since the transmission / reception means 41 is the same as that of the sixth embodiment, description thereof is omitted. Moreover, since the display part 42 and the operation part 43 are the same as that of 1st embodiment, description is abbreviate | omitted.

  The control means 44 calculates the relationship between the thermal resistance value and the temperature as a temperature distribution based on the body surface temperature from the body surface sensor 31, the intermediate temperature from the intermediate sensor 32, and the outer surface temperature from the outer surface sensor 33. Surface temperature thermal resistance value from deep part of human body 2 to body surface 2A using temperature distribution calculating means 442 and body surface temperature, intermediate temperature, outer surface temperature, and deep temperature for calculation measured by a known thermometer or the like The thermal resistance calculating means 443 for calculating the temperature and the deep temperature calculating means 441 for calculating the temperature of the deep part of the human body 2 using the surface layer thermal resistance value calculated by the thermal resistance calculating means 443.

  FIG. 25 shows a simulation result of the temperature distribution of the body temperature with respect to the distance from the deep part of the human body 2 to the body surface 2A. As shown in FIG. 25, the temperature change with respect to the distance from the deep portion is not linear but curved. This is not a one-dimensional movement of the heat from the deep part toward the body surface in practice, but is also performed in a three-dimensional manner in a direction along the body surface. This may be due to other reasons.

FIG. 26 shows a model of the temperature distribution from the deep part of the human body 2 through the body surface 2A and the thermometer body 3 to the outside air. In FIG. 26, the horizontal axis is the thermal resistance value, and the vertical axis is the temperature (body temperature). As shown in FIG. 26, in the temperature transfer model from the deep part of the human body 2 to the outside air, the temperature Tcore of the deep part of the human body 2 is substantially constant. In the surface layer part on the outer shell side from the deep part, the body temperature falls due to the influence of the thermal resistance of the skin and the outside air temperature. Although not shown, there is a microscopic gap between the body surface 2 </ b> A and the thermometer main body 3, and the temperature is lowered even in the contact thermal resistance portion due to heat release in this gap. Therefore, when actually measuring the body temperature of the body surface 2A with the thermometer main body 3, the temperature Tb1 lowered by the contact thermal resistance portion is measured.
Since the thermometer main body 3 itself also has thermal resistance, a temperature drop occurs in the thermometer main body 3, and the temperature Tb <b> 2 is reached on the outer surface 30 of the thermometer main body 3. Further, the temperature Tb2 is measured at the position of the intermediate sensor 32, and the temperature Tb4 is measured at the outer surface sensor 33. Furthermore, since there is heat release at the outside air temperature contact portion between the outer surface 30 of the thermometer body 3 and the outside air, the temperature is lowered and finally becomes the outside air temperature Tamb.
Here, as shown in FIG. 25 described above, the heat transfer from the deep part of the human body 2 to the body surface 2A is not performed one-dimensionally, and therefore the relationship between the thermal resistance value and the temperature also in FIG. Is curvy.

The temperature distribution calculating means 442 performs curve approximation from the body surface temperature Tb1 measured by the body surface sensor 31, the intermediate temperature Tb2 measured by the intermediate sensor 32, and the outer surface temperature Tb4 measured by the outer surface sensor 33. The relationship between the thermal resistance value R and the temperature T is obtained as the temperature distribution T (R) of the human body 2.
Specifically, the temperature distribution T (R) is expressed by the following equation (14) as a polynomial approximation of the thermal resistance value R.

  The temperature distribution calculating means 442 is an expression in which the body surface temperature Tb1 at the thermal resistance value (R = 0) of the body surface 2A is input to the expression (14), and the thermal resistance value at the position of the intermediate sensor 32 (R = Ru01). Constants a, b, and c are determined from the equation for inputting the intermediate temperature Tb2 and the equation for inputting the outer surface temperature b4 at the thermal resistance value (R = Ru0) of the outer surface 30, and the temperature T related to the thermal resistance value R is determined. A function (temperature distribution) T (R) is obtained.

  The thermal resistance calculation means 443 calculates the temperature distribution from the calculation body surface temperature T0, b1, the calculation intermediate temperature T0, b2, and the calculation outer surface temperature T0, b4 measured to obtain the surface layer thermal resistance value Rs. The temperature distribution T0 (R) for calculating the thermal resistance value calculated by the calculation means 442 is used, and the calculation depth temperature T0, core of the deep portion of the human body 2 for calculating the thermal resistance is substituted for the temperature distribution T0 (R). Thus, the surface layer thermal resistance value Rs of the part from the deep part to the body surface 2A is obtained.

  When actually measuring the body temperature of the human body 2, the deep temperature calculation means 441 uses the surface layer thermal resistance value Rs calculated by the thermal resistance calculation means 443 to calculate the temperature distribution T calculated by the temperature distribution calculation means 442. By substituting the surface layer thermal resistance value Rs for (R), the temperature Tcore in the deep part is calculated.

The storage unit 45 stores the body surface temperature Tb1, the intermediate temperature Tb2, and the outer surface temperature Tb4 transmitted from the thermometer body 3. Further, the surface layer thermal resistance value Rs of the portion from the deep part of the human body 2 to the body surface 2A calculated by the thermal resistance calculating unit 443, the temperature Tcore of the deep part of the human body 2 calculated by the deep temperature calculating unit 441, and the like are stored. The
Here, the memory | storage part 45 is comprised so that the temperature information regarding the some human body 2 can be memorize | stored, and the surface layer part thermal resistance value Rs, the temperature Tcore of the deep part, etc. are memorize | stored for every human body 2. FIG. The storage unit 45 also measures the measurement body surface temperature T0, b1, the calculation intermediate temperature T0, b2, the calculation outer surface temperature T0, b4, and the like measured when calculating the surface layer thermal resistance value Rs. Can be memorized. In addition to the above-described temperature information, the storage unit 45 may store measurement information such as the name, age, measurement date and time of the person to be measured (human body 2, infant), for example. In this case, the measurement information may be input from the operation unit 43.

Such a thermometer 1 operates as follows.
FIG. 27 shows a flowchart showing the operation of the thermometer 1 in the present embodiment. As shown in FIG. 27, in order to measure the body temperature of the human body 2 with the thermometer 1, first, a body temperature measurement preparation step is performed to calculate the surface layer thermal resistance value Rs from the deep part of the human body 2 to the body surface 2 </ b> A. .
The thermometer main body 3 is attached to the human body 2 (in this embodiment, the chest of the infant), and the operator 5 of the thermometer 1 holding the infant wears the display device 4 on the arm. When the operator 5 operates the operation unit 43 of the display device 4 to switch on the display device 4, the transmission / reception means 41 transmits radio waves to the thermometer body 3. The thermometer main body 3 is charged by generating an electromotive force in the antenna coil 36 by electromagnetic induction by this radio wave (step S41). When the thermometer main body 3 is activated by the electromotive force (step S42), the body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33 are activated. When these sensors 31, 32, and 33 are activated, the thermometer main body 3 transmits a standby signal from the transmission / reception means 35 to the display device 4 (step S43).

When receiving the standby signal, the control means 44 of the display device 4 transmits a temperature measurement command signal from the transmission / reception means 41 (step S44). The thermometer main body 3 receives this temperature measurement command signal, operates the body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33, and calculates the temperature for calculating the surface layer thermal resistance value Rs, that is, the calculation of the body surface 2A. The body surface temperature T0, b1, the intermediate temperature T0, b2 for calculation intermediate the heat insulating material 37, and the outer surface temperature T0, b4 for calculation of the outer surface 30 are measured (step S45, temperature measurement process for calculating thermal resistance). . The temperature information of the body surface temperature for calculation T0, b1, the intermediate temperature for calculation T0, b2, and the outer surface temperature for calculation T0, b4 is converted from an analog signal to a digital signal by the A / D converter 34, and transmitted and received. By means 35 the display device 4
(Step S46). The calculation body surface temperature T0, b1, the calculation intermediate temperature T0, b2, and the calculation outer surface temperature T0, b4 are set so that heat transfer from the deep part of the human body 2 to the body surface 2A is in a steady state. It is desirable to measure after a predetermined time has elapsed.

Here, the control means 44 calculates the surface layer thermal resistance value Rs using the temperature information obtained from the body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33, or calculates the deep temperature Tcore. It is necessary to judge whether. For this reason, the control means 44 is provided with a selection means (not shown). For example, the selection unit displays a selection screen for selecting either “body temperature measurement preparation mode” or “body temperature measurement mode” on the display unit 42, and the operator 5 operates either the operation unit 43 or the like. It suffices that the mode is selected. Here, the operator 5 may select the body temperature measurement preparation mode and instruct the control means 44 to calculate the surface layer thermal resistance value Rs using the temperature information.
The control means 44 of the display device 4 is based on the calculation body surface temperature T0, b1, the calculation intermediate temperature T0, b2 and the calculation outer surface temperature T0, b4 transmitted from the thermometer main body 3, and the temperature distribution calculation means 442. The temperature distribution T0 (R) is calculated by determining the constants a, b, and c (step S47, temperature distribution calculation step).

Next, the display device 4 displays a screen for prompting the display unit 42 to input the calculation depth temperature T0, core, which is the temperature of the deep portion for calculating the thermal resistance value. The operator 5 operates the operation unit 43 to input the measured calculation deep temperature T0, core. Thereby, the display device 4 acquires the calculation deep temperature T0, core (step S48). The calculation deep temperature T0, core may be measured by a known thermometer that measures armpit temperature, sublingual temperature, etc., and the calculation body surface temperature T0, b1, calculation intermediate temperature T0, b2, and calculation It is necessary to measure the outer surface temperature T0, b4 almost simultaneously with the measurement.
The thermal resistance calculation means 443 of the control means 44 substitutes the acquired depth temperature T0, core for calculation into the temperature distribution T0 (R) calculated by the temperature distribution calculation means 442, thereby from the deep part of the human body 2 to the body surface 2A. The surface layer thermal resistance value Rs is calculated (step S49, thermal resistance calculation step). The control means 44 stores the calculated surface layer thermal resistance value Rs in the storage unit 45 (step S50) and ends the preparation for body temperature measurement.

  Next, the operation of the thermometer 1 in the body temperature measurement step when actually measuring the body temperature of the human body 2 will be described. FIG. 28 is a flowchart showing the operation of the thermometer 1. In FIG. 28, when the body temperature of the human body 2 is measured by the thermometer 1, first, the thermometer main body 3 is electromagnetically induced in the antenna coil 36 by the radio wave from the antenna coil 46 of the display device 4 in the same manner as in step S41 described above. Is charged (step S51). When the sensors 31, 32, 33 of the thermometer main body 3 are activated (step S52), the thermometer main body 3 transmits a standby signal to the display device 4 (step S53). Thereby, the display device 4 determines that the thermometer main body 3 is ready to measure the body temperature, and reads the surface layer thermal resistance value Rs of the human body 2 from the storage unit 45 (step S54). Then, a body temperature measurement start signal is transmitted to the thermometer main body 3 via the transmission / reception means 41 (step S55).

The thermometer main body 3 receives the measurement start signal from the display device 4, measures the body surface temperature Tb 1 of the body surface 2 A by the body surface sensor 31, measures the intermediate temperature Tb 2 by the intermediate sensor 32, and by the outer surface sensor 33. Measurement of the outer surface temperature Tb4 is started (step S56, temperature measurement step). The temperature values Tb1, Tb2, Tb4 detected by the sensors 31, 32, 33 are converted into digital signals by the A / D converter 34, and then transmitted to the display device 4 by the transmission / reception means 35.
In the control means 44, the “body temperature measurement mode” is selected by the selection means described above in order to calculate the body temperature at the deep part using the temperature information from the body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33. Need to be.
The temperature distribution calculation means 442 of the control means 44 performs a curve approximation of a polynomial approximation from the body surface temperature T, the intermediate temperature T, and the outer surface temperature T transmitted from the thermometer body 3 using the equation (14). The temperature distribution T (R) is calculated (step S57).
The deep temperature calculation means 441 calculates the deep temperature Tcore based on the surface layer thermal resistance value Rs calculated by the thermal resistance calculation means 443 and the temperature distribution T (R) calculated by the temperature distribution calculation means 442. (Step S58, deep temperature calculation step). The control unit 44 stores the temperature Tcore in the storage unit 45 (step S59) and displays the temperature Tcore on the display unit 42 (step S60). The operator 5 can check the temperature Tcore on the display unit 42 of the wristwatch type display device 4 while holding the infant.

The control means 44 counts the elapsed time from the measurement of the body surface temperature Tb1, the intermediate temperature Tb2, and the outer surface temperature Tb4 by a built-in timer, and monitors whether or not a predetermined time has elapsed (step S61). When the elapsed time is equal to or longer than the predetermined time, the control unit 44 returns to step S65, and transmits a measurement start signal to the thermometer body 3, and again measures the body surface temperature Tb1, the intermediate temperature Tb2, and the outer surface temperature Tb4.
In this way, the body surface temperature Tb1, the intermediate temperature Tb2, and the outer surface temperature Tb4 are measured every predetermined time, and the deep temperature Tcore is calculated and stored in the storage unit 45.

The surface layer thermal resistance value Rs does not change greatly unless there is a special circumstance such as a sudden change in the body shape of the human body 2, so that the temperature distribution calculating means for calculating the surface layer thermal resistance value Rs The calculation of the temperature distribution T0 (R) at 442 and the calculation of the surface layer thermal resistance value Rs by the thermal resistance calculation means 443 may be performed once at the start of the measurement of the body temperature. When the heat transfer characteristics of the human body 2 change due to a sudden change in body shape, the temperature data T0, core of the deep part is acquired once again, and the calculation body surface temperature T0, b1, the calculation intermediate temperature T0 , b2 and calculation outer surface temperature T0, b4 may be measured to calculate temperature distribution T (R) and surface layer thermal resistance value Rs.
In addition, since the surface layer thermal resistance value Rs inherent to the human body 2 has a small change, even when the thermometer 1 is used again, the previously calculated surface layer thermal resistance value Rs can be used. At the time of measurement, the time until the start of body temperature measurement can be shortened. In this case, if the surface layer thermal resistance values Rs for a plurality of human bodies 2 are stored in the storage unit 45, the surface layer thermal resistance value Rs previously calculated by operating the operation unit 43 is read and reused. Can do. In this case, when performing a body temperature measurement process, the living body selection for specifying the human body 2 may be performed by the operation unit 43.

According to the seventh embodiment, the following effects can be obtained in addition to the effects (3), (4), and (5) of the first embodiment.
(16) Since the thermal resistance calculating means 443 calculates the surface layer thermal resistance value Rs based on the calculation depth temperature T0, core using the temperature distribution T (R) from the deep portion of the human body 2 to the body surface 2A. The surface layer thermal resistance value Rs according to the heat transfer characteristics of the human body 2 can be obtained. The deep part temperature calculation means 441 calculates the deep part temperature Tcore based on the surface layer thermal resistance value Rs, so that it is not affected by the difference in the body shape of the human body 2 and the like, according to the heat transfer characteristics of the human body 2. Deep body temperature Tcore can be calculated accurately.
Further, the relationship between the thermal resistance value and the temperature from the deep part of the human body 2 to the outside air is calculated as a temperature distribution T (R), and the surface layer thermal resistance value Rs of the human body 2 is calculated using this temperature distribution T (R). Therefore, since the heating means such as a heater for canceling the heat flow as in the conventional thermometer becomes unnecessary, the configuration of the thermometer 1 can be simplified. Thereby, size reduction of the thermometer 1 can be further promoted. And since the conventional heating means is not required, power saving of the thermometer 1 can be promoted, and since it is safe even if the thermometer 1 is stuck on the body surface 2A for a long time, the safety and handling of the thermometer 1 are improved. Can be made.

(17) Since the body surface sensor 31, the intermediate sensor 32, and the outer surface sensor 33 measure the temperature at three points and approximate the temperature distribution T (R) as a polynomial approximation, for example, from two measurement points Compared with the case where the relationship between the thermal resistance value and the temperature is approximated by a straight line, the actual heat transfer can be approximated more accurately. Therefore, the body temperature of the deep part of the human body 2 can be calculated more accurately. Since the temperature of the deep part of the human body 2 can be accurately calculated by measuring the temperature with the sensors 31, 32, 33 of the thermometer body 3 attached to the body surface 2A of the human body 2, the body temperature can be measured with a simple operation. This can be realized and the handling of the thermometer 1 can be improved.

(18) Since the surface layer thermal resistance value Rs is stored in the storage unit 45, the stored surface layer thermal resistance value Rs can be read and used in the body temperature measurement step. For this reason, it is not necessary to perform the body temperature measurement preparation step and the body temperature measurement step continuously, and the surface layer thermal resistance value Rs can be calculated in advance. Therefore, the handleability of the thermometer 1 can be improved, and the measurement time in the body temperature measurement process can be shortened. Moreover, since the memory | storage part 45 can memorize | store the surface layer part thermal resistance value Rs of the several human body 2, the thermometer 1 can also be used alternately by several persons, and the convenience of the thermometer 1 can be improved.

  It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

[Modification 1]
In the first embodiment, the deep part temperature calculation means stores Equation (6) as an arithmetic expression, and includes a first body surface temperature Tb1, a first intermediate temperature Tb2, a second body surface temperature Tb3, and a second body surface temperature Tb3. It is not limited to the one that directly calculates the deep temperature Tcore from the intermediate temperature Tb4. For example, the heat flux Q from the deep part of the human body to the outside air and the thermal resistance value Rs + Rt of the part from the deep part of the human body to the body surface are obtained, and the temperature Tcore in the deep part is calculated using these heat flux Q and the thermal resistance value Rs + Rt. You may comprise.
FIG. 29 is a block diagram showing a modification of the thermometer of the present invention. As shown in FIG. 29, in addition to the deep part temperature calculating means 441, the control means 44 is based on the body surface temperature and the intermediate temperature, and the heat flux Qu1 between the body surface 2A and the interfaces 301A, 301B, Based on the heat flux calculating means 444 for calculating Qu2 and the heat fluxes Qu1 and Qu2 calculated by the heat flux calculating means 444, the surface layer portion thermal resistance value Rs + Rt of the portion from the deep part of the human body 2 to the body surface 2A is calculated. Thermal resistance calculation means 443. Further, the deep part temperature calculating unit 441 is configured to calculate the temperature Tcore of the deep part of the human body 2 based on the thermal resistance value Rs + Rt calculated by the thermal resistance calculating unit 443.

The heat flux calculation means 444 includes a first body surface temperature Tb1 and a second body surface temperature Tb3 measured by the body surface sensors 31A and 31B, and a first intermediate temperature Tb2 and a second body surface temperature Tb2 measured by the intermediate sensors 32A and 32B. The heat fluxes Qu1 and Qu2 flowing between the body surface 2A and the interfaces 301A and 301B are calculated from the intermediate temperature Tb4.
Specifically, the heat flux calculation means 444 stores the calculation formulas represented by the above formula (1) and the following formula (15), and the heat fluxes Qu1 and Qu2 are calculated by these calculation formulas. To do.

  From the expressions (4) and (5) of the first embodiment, the deep temperature Tcore is expressed by the following expressions (16) and (17), respectively.

  From these equations (16) and (17), the thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A is expressed as the following equation (18).

  Therefore, this equation (18) is stored in the thermal resistance calculation means 443. Based on this calculation formula, the thermal resistance calculating means 443 calculates the surface layer thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A using the detected heat fluxes Qu1 and Qu2.

The deep part temperature calculation means 441 stores either one of the above formulas (16) and (17). When the temperature Tcore of the deep part of the human body 2 is actually calculated, the deep part temperature calculation unit 441 uses the surface layer thermal resistance value Rs + Rt calculated by the thermal resistance calculation unit 443 to use the body used in the stored formula. The temperature in the deep part is calculated from the surface temperature and the intermediate temperature.
That is, for example, when equation (16) is stored in the deep temperature calculation means 441, the first body surface temperature Tb1, the first intermediate temperature Tb2, and the thermal resistance value Ru0 obtained from the body surface sensor 31A are used. Then, the temperature Tcore in the deep part may be calculated.
According to such a configuration of the control means 44, the surface layer thermal resistance value Rs + Rt according to the heat transfer characteristics of the human body 2 can be obtained, so that the human body 2 is not affected by the difference in the body shape of the human body 2. The body temperature Tcore in the deep part can be accurately calculated according to the heat transfer characteristics.

It should be noted that the surface layer thermal resistance value Rs + Rt does not change greatly unless there is a special circumstance such as a sudden change in the body shape of the human body 2. The calculation of the surface layer thermal resistance value Rs + Rt by the calculating means 443 may be performed only once at the start of the measurement of the body temperature. In this case, for example, the calculated surface layer thermal resistance value Rs + Rt is stored in the storage unit 45, and each time the depth temperature calculation means 441 calculates the temperature of the deep part from the body surface temperature and the intermediate temperature, the storage part 45 The surface layer thermal resistance value Rs + Rt may be read and used.
When the heat transfer characteristic of the human body 2 changes due to a sudden change in body shape, the first body surface temperature Tb1 and the second body surface sensor 31A, 31B and the intermediate sensors 32A, 32B are once again used. The body surface temperature Tb3, the first intermediate temperature Tb2 and the second intermediate temperature Tb4 may be measured to calculate the heat fluxes Qu1, Qu2 and the surface layer thermal resistance value Rs + Rt.

  In addition, since the surface layer thermal resistance value Rs + Rt specific to the human body 2 has a small change, even when the thermometer 1 is used again, the previously calculated surface layer thermal resistance value Rs + Rt can be used. At the time of measurement, the time until the start of body temperature measurement can be shortened. In this case, if the surface layer thermal resistance value Rs + Rt for a plurality of human bodies 2 is stored in the storage unit 45, the surface layer thermal resistance value Rs + Rt previously calculated by operating the operation unit 43 is read and reused. Can do. In this case, when performing a body temperature measurement process, the living body selection for specifying the human body 2 may be performed by the operation unit 43.

The reference temperature measurement unit is not limited to the case where the first reference temperature measurement unit and the second reference temperature measurement unit are intermediate temperature measurement means, and it is sufficient that at least one of them is constituted by the intermediate temperature measurement means. Further, the reference temperature measuring unit is not limited to the intermediate temperature measuring unit that measures the intermediate temperature, but may be an outside air temperature measuring unit that measures the temperature of the outside air, for example.
The body surface measuring means and the reference temperature measuring unit are not limited to two, and a plurality of three or more may be provided.

[Modification 2]
The deep part temperature calculation means stores the equation (11) as an arithmetic expression as in the second embodiment, and the first body surface temperature Tb1, the first outer surface temperature Tb2, the second body surface temperature Tb3, The temperature Tcore of the deep part is not directly calculated from the outer surface temperature Tb4 of 2 and the ratio α between the first thermal resistance value Ru1 and the second thermal resistance value Ru2. For example, the heat flux Q from the deep part of the human body to the outside air and the thermal resistance value Rs + Rt of the part from the deep part of the human body to the body surface are obtained, and the temperature Tcore in the deep part is calculated using these heat flux Q and the thermal resistance value Rs + Rt. You may comprise.
FIG. 30 is a block diagram showing a modification of the thermometer of the present invention. As shown in FIG. 30, the control means 44 has a heat flux between the body surface 2 </ b> A and the outer surfaces 302 </ b> A and 302 </ b> B based on the body surface temperature and the outer surface temperature in addition to the deep temperature calculation means 441. Based on the heat flux calculation means 444 for calculating Qu1 and Qu2 and the heat flux Qu1 and Qu2 calculated by the heat flux calculation means 444, the surface layer thermal resistance value Rs + Rt of the portion from the deep part of the human body 2 to the body surface 2A is calculated. Thermal resistance calculation means 443 for calculating. Further, the deep part temperature calculating unit 441 is configured to calculate the temperature Tcore of the deep part of the human body 2 based on the thermal resistance value Rs + Rt calculated by the thermal resistance calculating unit 443.

The heat flux calculation means 444 includes a first body surface temperature Tb1 and a second body surface temperature Tb3 measured by the body surface sensors 31A and 31B, a first outer surface temperature Tb2 measured by the outer surface sensors 33A and 33B, and From the second outer surface temperature Tb4, heat fluxes Qu1 and Qu2 flowing between the body surface 2A and the outer surfaces 302A and 302B are calculated, respectively.
Specifically, the heat flux calculation means 444 stores the calculation formulas represented by the above formula (7) and the following formula (19), and the heat fluxes Qu1 and Qu2 are calculated by these calculation formulas. To do.

  From the equations (9) and (10) of the second embodiment, the deep temperature Tcore is expressed by the following equations (20) and (21), respectively.

  From these equations (20) and (21), the thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A is expressed as the following equation (22).

  Therefore, this equation (22) is stored in the thermal resistance calculation means 443. Based on this calculation formula, the thermal resistance calculation means 443 calculates the surface layer thermal resistance value Rs + Rt in the portion from the deep part of the human body 2 to the body surface 2A using the calculated heat fluxes Qu1 and Qu2.

The deep part temperature calculation means 441 stores either one of the above formulas (20) and (21). When the temperature Tcore of the deep part of the human body 2 is actually calculated, the deep part temperature calculation unit 441 uses the surface layer thermal resistance value Rs + Rt calculated by the thermal resistance calculation unit 443 to be obtained by the body surface sensors 31A and 31B. The temperature of the deep part is calculated from the body surface temperature and the outer surface temperature obtained by the outer surface sensors 33A and 33B.
That is, for example, when equation (21) is stored in the deep temperature calculation means 441, the first body surface temperature Tb1, the first outer surface temperature Tb2, and the first thermal resistance obtained from the body surface sensor 31A. The deep temperature Tcore may be calculated using the value Ru1.
According to such a configuration of the control means 44, the surface layer thermal resistance value Rs + Rt according to the heat transfer characteristics of the human body 2 can be obtained, so that the human body 2 is not affected by the difference in the body shape of the human body 2. The body temperature Tcore in the deep part can be accurately calculated according to the heat transfer characteristics.

It should be noted that the surface layer thermal resistance value Rs + Rt does not change greatly unless there is a special circumstance such as a sudden change in the body shape of the human body 2. The calculation of the surface layer thermal resistance value Rs + Rt by the calculating means 443 may be performed only once at the start of the measurement of the body temperature. In this case, for example, the calculated surface layer thermal resistance value Rs + Rt is stored in the storage unit 45, and each time the depth temperature calculation means 441 calculates the temperature of the deep part from the body surface temperature and the outer surface temperature, the storage part 45 The surface layer portion thermal resistance value Rs + Rt may be read out and used.
When the heat transfer characteristic of the human body 2 changes due to a sudden change in body shape, the first body surface temperature Tb1 and the second body surface sensor 31A, 31B and the outer surface sensors 33A, 33B are once again used. The body surface temperature Tb3, the first outer surface temperature Tb2 and the second outer surface temperature Tb4 may be measured to calculate the heat fluxes Qu1, Qu2 and the surface layer thermal resistance value Rs + Rt.

  In addition, since the surface layer thermal resistance value Rs + Rt specific to the human body 2 has a small change, even when the thermometer 1 is used again, the previously calculated surface layer thermal resistance value Rs + Rt can be used. At the time of measurement, the time until the start of body temperature measurement can be shortened. In this case, if the surface layer thermal resistance value Rs + Rt for a plurality of human bodies 2 is stored in the storage unit 45, the surface layer thermal resistance value Rs + Rt previously calculated by operating the operation unit 43 is read and reused. Can do. In this case, when performing a body temperature measurement process, the living body selection for specifying the human body 2 may be performed by the operation unit 43.

[Modification 3]
In the sixth embodiment, the thermal resistance calculation means is not limited to the method of obtaining the surface layer thermal resistance value using the body surface temperature and the outer surface temperature, but may be obtained from the body surface temperature and the outside air temperature, for example.
FIG. 31 shows a configuration block diagram of a modified example of the thermometer 1. As shown in FIG. 31, the thermometer main body 3 is provided with a body surface sensor 31, an A / D converter 34, and transmission / reception means 35. On the other hand, the display device 4 includes a reference temperature measuring unit (outside air) for measuring the outside air temperature, in addition to the transmission / reception unit 41, the display unit 42, the operation unit 43, the control unit 44, and the storage unit 45 similar to those in the sixth embodiment. An outside air sensor 47 as a temperature measuring means) and an A / D converter 48 are provided. The outside air sensor 47 and the A / D converter 48 have the same configuration as the outer surface sensor 33 and the A / D converter 34 of the sixth embodiment.

In such a thermometer 1, the outside air sensor 47 measures the outside air temperature Tamb.
Therefore, the heat flux calculation means 444 calculates the surface layer thermal resistance value Rs + Rt from the calculation body surface temperature T0, b1 and the calculation outside air temperature T0, amb in FIG.

  According to such a configuration, since the outside air sensor 47 is provided in the display device 4, the number of parts in the thermometer body 3 can be further reduced, and thus the thermometer body 3 can be further reduced in weight and size. . Further, since the outside air sensor 47 does not measure the outer surface 30 of the thermometer body 3, but measures the temperature Tamb of the outside air, a more stable temperature can be measured.

  In the first and fifth embodiments, the temperature measuring means 3A and 3B are integrally formed by one heat insulating material 37. However, the temperature measuring means 3A and 3B are configured by separating the heat insulating material 37 into two pieces. You may form separately.

  In the fourth and seventh embodiments, the number of measurement units is not limited to three, that is, the body surface, the middle, and the outer surface, but may be plural (at least three) so that a curve can be approximated. Further, the position of the measurement unit is not limited to the body surface or the outer surface, and can be set to an arbitrary position. When four or more measuring units are provided, when calculating the temperature distribution, a polynomial whose degree is increased by the number of measuring units may be used as a function of the temperature distribution.

In calculating the temperature distribution, it is not always necessary to take the logarithm. For example, as shown in the following equation, it may be approximated as a polynomial with an increased degree.
Further, the curve approximation is not limited to polynomial approximation, and any approximation method such as logarithmic approximation or exponential approximation can be adopted.

  In the first embodiment, the heat flux is adjusted using the heat insulating material 38A and the heat insulating material 38B. However, it is also possible to adjust the heat flux using a heater.

  In the fifth embodiment, the temperature measuring means 3A, 3B have the common heat insulating material 37, but it is not always necessary to have such a configuration, and the entire thermal resistance value of the temperature measuring means 3A, 3B. Therefore, for example, two heat insulating materials having different thermal resistance values are used to constitute the temperature measuring means, and in each of the heat insulating materials, the thermal resistance values of the corresponding measuring portions of the two temperature measuring means from the body surface. It is good also as a structure which arrange | positions a measurement part in the position where each becomes equal.

In the sixth embodiment, the depth for calculation is measured with an existing thermometer, and the operator 5 is input to the control means 44 by operating the operation unit 43 of the display device 4, but not limited thereto, For example, since the display device 4 includes the transmission / reception means 41, the calculation deep temperature measured by the existing thermometer may be received by the transmission / reception means 41 by wireless communication. In this case, since the operator 5 can save time and effort for inputting the calculation depth temperature, the body temperature measurement operation can be simplified. Further, since the calculation deep temperature is acquired (received) by using the communication means by the transmission / reception means 41 that originally exists, it is possible to prevent the configuration of the thermometer 1 from being complicated. Accordingly, an increase in the number of components of the thermometer 1 can be prevented, and the miniaturization of the thermometer 1 can be promoted.
In addition, when the thermometer main body and the display device are not separate but integrally configured, the thermometer may be separately provided with a receiving unit for receiving the calculation depth temperature by wireless communication.

  In each of the above embodiments, the transmission / reception means is not limited to wireless communication having an antenna, and may perform wired communication by wiring a thermometer main body and a display device, for example. According to such a configuration, since it is not necessary to perform radio wave communication, it is possible to remove the influence of the radio wave on the human body. Moreover, since electric power can be supplied to the thermometer main body by wire, the structure of electric power supply can be simplified.

  Moreover, although the A / D converter which converts the analog signal of a temperature value into a digital signal was provided, the structure which is not restricted to this but is not provided with the A / D converter may be sufficient. In this case, for example, a device that converts a temperature value into a frequency can be adopted, and the temperature value converted into a resistance value or a voltage value may be converted into a frequency by a multivibrator circuit, an oscillation circuit, a VF converter, or the like. . Alternatively, the temperature value may be converted into time. In this case, the frequency-converted signal may be further converted into a cycle time or a pulse width.

The thermometer is not limited to one in which the display device and the thermometer main body are separate from each other, and the display device and the thermometer main body may be configured integrally.
The thermometer may be configured such that the display device 4 manages information on a plurality of thermometer main bodies 3 when the display device 4 and the thermometer main body 3 are configured separately as in the embodiment. . In this case, an ID code or the like that can identify each thermometer main body 3 may be provided so that the thermometer main body 3 can be recognized and managed by the display device 4.
In addition, information on a plurality of thermometers may be managed by sending information on thermometers to a terminal or the like. In this case, body temperature data and the like for each living body can be stored and managed in the terminal, so that operability is improved. Further, in such a configuration, even when the thermometer to be used is changed, previously calculated body temperature data and the like can be acquired from the terminal, so that the convenience of the thermometer can be improved.

In each of the above-described embodiments, the thermometer main body 3 is configured to be affixed with an adhesive. However, the thermometer is not limited thereto. If a band is attached, body surface temperature measuring means sticks to the forehead or the back of the head and can contact the body surface. Further, if the thermometer main body is incorporated in underwear or the like, the body surface temperature measuring means can be brought into contact with the back or chest by wearing the underwear.
The shape of the display body is not limited to a wristwatch, and may be, for example, a stationary or other pendant type.

The best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

  DESCRIPTION OF SYMBOLS 1 ... Thermometer, 2 ... Human body (living body), 2A ... Body surface, 3 ... Thermometer main body, 3A, 3B ... Temperature measuring means, 4 ... Display apparatus, 31 ... Body surface sensor, 31A ... Body surface sensor (1st reference temperature) Measuring unit), 31B ... Body surface sensor (second reference temperature measuring unit), 32A ... Intermediate sensor (first reference temperature measuring unit), 32B ... Intermediate sensor (second reference temperature measuring unit), 33 ... Outer surface sensor ( Measuring part), 33A, 33B ... outer surface sensor, 35 ... transmission / reception means, 35A, 35B ... transmission / reception means, 37 ... heat insulation material having a common thermal resistance value, 38A, 38B ... first and second heat insulation materials, 41 Transmission / reception means, 42 ... Display section, 44 ... Control means, 45 ... Storage section (storage means), 46 ... Transmission / reception means, 47 ... Outside air sensor (outside air temperature measurement means, reference temperature measurement section), 51A ... Heat flux sensor ( Second heat flux measuring unit), 51B ... Flux sensor (second heat flux measuring unit), 441 ... core temperature calculating means, 442 ... temperature distribution calculating means, 443 ... heat resistance calculating means.

Claims (10)

A first temperature measuring means, a second temperature measuring means, and a deep temperature calculating means;
The first temperature measuring means includes
A first reference temperature measurement unit configured to be able to contact a first body surface of a living body and to measure a first reference temperature at a first reference temperature measurement position having a first thermal resistance value from the first body surface. When,
A first reference temperature measurement unit that measures, as a first reference temperature, a temperature at a first reference temperature measurement position where a thermal resistance value from the first body surface is different from the first thermal resistance value;
A first heat insulating material provided between the first reference temperature measurement position and outside air;
A third heat insulating material provided between the first reference temperature measurement position and the first reference temperature measurement position;
The second temperature measuring means includes
The second body surface is configured to come into contact with a second body surface at a position different from the first body surface, and has a second thermal resistance value common to the first thermal resistance value from the second body surface. A second reference temperature measurement unit for measuring the second reference temperature at the reference temperature measurement position;
A second reference temperature measurement unit that measures, as a second reference temperature, a temperature at a second reference temperature measurement position where the thermal resistance value from the second body surface is different from the second thermal resistance value;
A second heat insulating material provided between the second reference temperature measurement position and outside air and having a thermal resistance value different from the thermal resistance value of the first heat insulating material;
The third heat insulation provided between the second reference temperature measurement position and the second reference temperature measurement position and provided between the first reference temperature measurement position and the first reference temperature measurement position. And a fourth heat insulating material having a common thermal resistance value with the material,
The deep temperature calculating means, said first and second reference temperature, the first and second reference temperature using a thermometer, characterized in that that will be configured to calculate the temperature of the deep area of the body. The thermometer according to claim 1,
If the first reference temperature is Tb1, the first reference temperature is Tb2, the second reference temperature is Tb3, and the second reference temperature is Tb4 ,
The deep part temperature calculation means includes an arithmetic expression for calculating the deep part temperature Tcore.

A thermometer characterized by memorizing. The thermometer according to claim 1 or 2,
The first heat insulating material and the second heat insulating material are formed of different materials.
A thermometer characterized by that. The thermometer according to any one of claims 1 to 3,
A display device having a display unit for displaying the temperature of the deep part calculated by the deep part temperature calculating means;
A thermometer body having first temperature measuring means and second temperature measuring means,
The said display apparatus and the said thermometer main body are comprised by the different body. The thermometer characterized by the above-mentioned. The thermometer according to claim 4,
The said deep part temperature calculating means is provided in the said display apparatus. The thermometer characterized by the above-mentioned. The thermometer according to claim 4 or claim 5,
The said display apparatus and the said thermometer main body are each provided with the transmission / reception means which can transmit / receive information mutually by radio | wireless communication. The thermometer according to any one of claims 1 to 6,
The thermometer main body is configured to be capable of being attached to the body surface of the living body. An electronic apparatus comprising the thermometer according to claim 1. A body temperature measuring method for measuring a body temperature of a deep part of a living body using the thermometer according to any one of claims 1 to 7 ,
The first reference temperature is measured at a first reference temperature measurement position having a first thermal resistance value from the first body surface of the living body, and the thermal resistance value from the first body surface is the first A first temperature measurement step of measuring a temperature at a first reference temperature measurement position different from the thermal resistance value as a first reference temperature ;
Measuring a second reference temperature at a second reference temperature measurement position having a second thermal resistance value common to the first thermal resistance value from a second body surface different from the first body surface ; A second temperature measurement step of measuring, as a second reference temperature, a temperature at a second reference temperature measurement position where the thermal resistance value from the second body surface is different from the second thermal resistance value ;
A deep temperature calculation step configured to calculate the temperature of the deep portion of the living body using the first and second reference temperatures and the first and second reference temperatures. Body temperature measurement method. The body temperature measuring method according to claim 9,
If the first reference temperature is Tb1, the first reference temperature is Tb2, the second reference temperature is Tb3, and the second reference temperature is Tb4 ,
The deep temperature calculation step includes

The body temperature measuring method, wherein the temperature Tcore of the deep part is calculated from the formula:

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