JP2013190207A - Electronic body thermometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable electronic body thermometer capable of measuring body temperature with high accuracy in accordance with a wide variety of situations.SOLUTION: An electronic body thermometer 100 includes; a first temperature sensing unit 11; a first body temperature measurement unit 14A which measures body temperature using first temperature information detected by the first temperature sensing unit 11; a second temperature sensing unit 12; a second body temperature measurement unit 14B which measures body temperature using second temperature information detected by the second temperature sensing unit 12; and an ambient temperature measurement unit 14D which measures ambient temperature surrounding the electronic body thermometer 100 on the basis of one or both of the first temperature information or the second temperature information or both.

Description

  The present invention relates to an electronic thermometer.

  Some conventional thermometers are provided with another temperature sensor for measuring the ambient temperature in addition to the temperature sensor for measuring body temperature (see, for example, Patent Documents 1 to 3).

  Patent Document 1 describes a contact-type thermometer provided with a second temperature sensor for measuring the ambient temperature in the vicinity of the measurement site of the subject, in addition to the first temperature sensor for measuring body temperature. Has been.

  Patent Document 2 includes an infrared sensor, a first sensor that detects the ambient temperature of the infrared sensor, and a second sensor that detects the ambient temperature separately from the first sensor. There is described a thermometer that determines environmental fluctuation based on the temperature detected by the second sensor and prohibits temperature measurement according to the determination result.

  Patent Document 3 describes an infrared thermometer provided with two temperature sensors for measuring the environmental temperature.

  An electronic thermometer having a plurality of temperature sensors for measuring body temperature has also been proposed (see, for example, Patent Documents 4 and 5).

  Patent Document 4 describes a configuration in which a body temperature can be measured using only a thermistor for measuring a reference temperature in a thermometer that measures the body temperature using an infrared sensor and a thermistor for measuring a reference temperature of the infrared sensor.

  Patent Document 5 describes a contact-type thermometer that has two temperature sensors at the tip and can measure the body temperature based on the temperature detected by each temperature sensor.

JP 2003-254836 A JP 2003-52644 A Special table 2008-538965 gazette JP 2000-126136 A International Publication No. 07/138699

  In the thermometers described in Patent Documents 1 to 3, body temperature measurement is performed in a state where the temperature sensor for measuring the environmental temperature is broken or the environmental temperature measured by the information from the temperature sensor varies greatly. If it does, body temperature measurement accuracy will fall. Although the thermometer described in Patent Document 2 is configured not to perform body temperature measurement in accordance with a change in environmental temperature, this causes a situation in which body temperature measurement cannot be performed immediately.

  If there are a plurality of temperature sensors as in the thermometers described in Patent Documents 4 and 5, temperature information can be detected by other temperature sensors even if any one of the temperature sensors fails. The possibility of not being able to measure body temperature can be reduced. However, even if the temperature sensor is not broken, if the body temperature measurement is performed in a state where the temperature of the temperature sensor itself is not stable, the body temperature measurement accuracy is lowered.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a highly reliable electronic thermometer capable of performing body temperature measurement with high accuracy corresponding to the situation in any situation.

  An electronic thermometer according to the present invention is an electronic thermometer that measures a body temperature of a measurement subject, and includes a first temperature measuring unit that detects temperature information, and first temperature information detected by the first temperature measuring unit. The body temperature is measured using a first temperature measuring unit that measures the body temperature using a second temperature measuring unit that detects temperature information, and second temperature information detected by the second temperature measuring unit. A second body temperature measurement unit that measures the environmental temperature measurement unit that measures an ambient temperature that is an ambient temperature of the electronic thermometer based on at least one of the first temperature information and the second temperature information; , Are provided.

  ADVANTAGE OF THE INVENTION According to this invention, the reliable electronic thermometer which can perform body temperature measurement with the high precision corresponding to the condition in every condition can be provided.

External appearance perspective view showing electronic thermometer 100 for explaining one embodiment of the present invention 1 is an exploded perspective view of the electronic thermometer 100 shown in FIG. The block diagram which shows the structure of the electronic thermometer 100 shown in FIG. The figure which showed the principal part functional block of the control part 14 in the electronic thermometer 100 shown in FIG. The flowchart for demonstrating operation | movement of the electronic thermometer 100 shown in FIG. The flowchart for demonstrating the modification of operation | movement of the electronic thermometer 100 shown in FIG. 1 is an external perspective view showing an electronic thermometer 100A which is a modification of the electronic thermometer 100 shown in FIG. The figure which shows the VIII-VIII sectional view of the electronic thermometer 100A shown in FIG. The block diagram which shows the structure of 100 A of electronic thermometers shown in FIG. 1 is an external perspective view showing an electronic thermometer 100B which is a modification of the electronic thermometer 100 shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view showing an electronic thermometer 100 for explaining an embodiment of the present invention. FIG. 2 is an exploded perspective view of the electronic thermometer 100 shown in FIG.

  The electronic thermometer 100 includes a case 10, a temperature measuring unit 11, a temperature measuring unit 12, a display unit 17, an operation unit 18, and a subassembly 35 (see FIG. 2).

  The case 10 is made of a thermoplastic resin material or the like formed into a hollow cylinder by injection molding. Examples of the resin material include ABS (acrylonitrile-butadiene-styrene copolymer) resin. A display unit 17 and an operation unit 18 are provided at predetermined positions on the surface of the case 10.

  The temperature measuring unit 11 is provided at the tip of the case 10 and is sandwiched between, for example, the armpit or the tongue of the measurement subject when measuring the body temperature. The temperature measuring unit 11 is used for measuring the body temperature of the measurement subject and also used for measuring the ambient temperature (environment temperature) of the electronic thermometer 100.

  The temperature measuring unit 11 includes a cap 21 and a thermistor 31.

  The cap 21 is provided so as to close the tip of the case 10. The cap 21 is formed in a bottomed cylindrical shape with a metal material such as a stainless alloy.

  The thermistor 31 is connected to a control circuit board (not shown) through a lead wire 33. The thermistor 31 is disposed in the cap 21 in a state where the sub-assembly 35 is inserted into the case 10 and the electronic thermometer 100 is assembled.

  The temperature measuring unit 12 is provided at the rear end of the case 10 and is pressed against, for example, the forehead or temple of the subject at the time of body temperature measurement. The temperature measuring unit 12 is used to measure the body temperature of the measurement subject, and is also used to measure the temperature around the electronic thermometer 100 (environmental temperature).

  The temperature measuring unit 12 includes a cap 22, a cover member 23, and a thermistor 32.

  The cap 22 is provided so as to close the rear end (opening 10H) of the case 10. The cap 22 is made of, for example, a material such as soft and elastic silicon rubber.

  The cover member 23 is made of a metal material such as a stainless alloy. The cover member 23 is exposed on the surface of the cap 22.

  The thermistor 32 is connected to a control circuit board (not shown) through a lead wire 34. The thermistor 32 is disposed in the cap 22 in a state where the electronic thermometer 100 is assembled, and contacts the cover member 23 with a predetermined pressure contact force.

  The subassembly 35 is disposed in the case 10 through the opening 10H as indicated by an arrow in FIG. Various parts assembled in the subassembly 35 include a display panel that constitutes the display unit 17, an operation switch that constitutes the operation unit 18, a buzzer that constitutes the notification unit 16, a predetermined processing circuit (a control unit 14 to be described later), and the like. including.

  FIG. 3 is a block diagram showing the configuration of the electronic thermometer 100 shown in FIG.

  The electronic thermometer 100 includes a control unit 14, a memory unit 15, and a power supply unit 19 in addition to the above-described temperature measurement unit 11, temperature measurement unit 12, notification unit 16, display unit 17, and operation unit 18.

  The control unit 14 is configured by a circuit including a CPU (Central Processing Unit), for example. The control unit 14 controls the entire electronic thermometer 100.

  The memory unit 15 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The memory unit 15 stores a program for causing the control unit 14 and the like to execute a processing procedure for body temperature measurement, and stores a measurement result.

  The notification unit 16 is configured by a buzzer, for example, and notifies the user that the body temperature measurement has been completed, the user's operation has been accepted, and the like.

  The display unit 17 is configured by a display panel such as an LCD (Liquid Crystal Display), for example, and displays a body temperature measurement result and the like.

  The operation unit 18 receives an operation by the measurement subject and inputs an external command to the control unit 14 and the power supply unit 19.

  The power supply unit 19 is configured by, for example, a button battery or the like, and supplies power to each unit via the control unit 14.

  FIG. 4 is a diagram showing a main functional block of the control unit 14 in the electronic thermometer 100 shown in FIG. Each functional block of the control unit 14 illustrated in FIG. 4 is a function realized by the CPU in the control unit 14 executing a program.

  As shown in FIG. 4, the control unit 14 includes a first body temperature measurement unit 14A, a second body temperature measurement unit 14B, an environmental temperature measurement unit 14D, and a body temperature measurement operation control unit 14C.

  The environmental temperature measurement unit 14D measures the environmental temperature based on at least one of the temperature information detected by the temperature measurement unit 11 and the temperature information detected by the temperature measurement unit 12.

  Specifically, the environmental temperature measurement unit 14D converts the temperature information detected by the temperature measurement unit 11 into a temperature value, and uses the temperature value as the environmental temperature (hereinafter referred to as Ts), the second body temperature measurement unit 14B. And output to the body temperature measurement operation control unit 14C. In addition, the environmental temperature measurement unit 14D converts the temperature information detected by the temperature measurement unit 12 into a temperature value, and uses the temperature value as the environmental temperature (hereinafter referred to as Ty) and the first body temperature measurement unit 14A and the body temperature measurement. Output to the operation control unit 14C.

  14 A of 1st body temperature measurement parts measure a to-be-measured person's body temperature by a prediction formula using the temperature information detected by the temperature measurement part 11. FIG. The prediction formula is a method for obtaining, as a body temperature measurement result, a temperature estimated value obtained by estimating a temperature in an equilibrium state by a predetermined calculation before a thermal equilibrium state with a measured part is obtained.

  14 A of 1st body temperature measurement parts selectively perform the correction | amendment process which correct | amends the body temperature determined by the prediction formula using the environmental temperature Ty output from environmental temperature measurement part 14D. By performing this correction process, the accuracy of body temperature measurement can be improved.

  The second body temperature measurement unit 14 </ b> B measures the body temperature of the measurement subject using a prediction formula using the temperature information detected by the temperature measurement unit 12. In the electronic thermometer 100, in order for the second body temperature measuring unit 14B to measure the body temperature in a time earlier than that of the first body temperature measuring unit 14A, the thermistor 32 configuring the temperature measuring unit 12 and the temperature measuring unit 11 are provided. There is a performance difference from the thermistor 31 to be configured. For example, the thermistor 31 is a normal type, and the thermistor 32 is a chip type that is faster in response to temperature than the normal type.

  The second body temperature measurement unit 14B selectively performs a correction process for correcting the body temperature determined by the prediction formula using the environment temperature Ts output from the environment temperature measurement unit 14D. By performing this correction process, the accuracy of body temperature measurement can be improved.

  The body temperature measurement operation control unit 14C controls the operations of the first body temperature measurement unit 14A and the second body temperature measurement unit 14B based on the environment temperature Ts and the environment temperature Ty output from the environment temperature measurement unit 14D.

  Next, the operation of the electronic thermometer 100 configured as described above will be described.

  FIG. 5 is a flowchart for explaining the operation of the electronic thermometer 100 shown in FIG.

  When the operation unit 18 is operated and the electronic thermometer 100 is turned on, the environmental temperature measurement unit 14D measures the environmental temperature Ts from the temperature information detected by the temperature measurement unit 11 and is detected by the temperature measurement unit 12. The environmental temperature Ty is measured from the temperature information, and then waits for a predetermined time (1 second in the example of FIG. 5) (step S1).

  Next, the environmental temperature measuring unit 14D again measures the environmental temperatures Ts and Ty based on the temperature information obtained from the temperature measuring units 11 and 12 (step S2).

  Next, the body temperature measurement operation control unit 14C determines the difference (| Ts− (Ts−) between the environmental temperature Ts measured in step S2 and the environmental temperature Ts measured in step S1 (referred to as (Ts−1)). 1) Calculate |). The body temperature measurement operation control unit 14C also determines the difference (| Ty− (Ty−1) between the environmental temperature Ty measured in step S2 and the environmental temperature Ty measured in step S1 (referred to as (Ty−1)). ) |) Is calculated (step S3).

  When | Ts− (Ts−1) | and | Ty− (Ty−1) | are each greater than a predetermined value (0.1 ° C. in the example of FIG. 5) (step S4: YES), body temperature measurement operation The control unit 14C increases the count value by one from the initial value (step S5).

  If the count value does not exceed the threshold value (step S5: NO), the process of step S1 is performed again. If the count value exceeds the threshold value (step S5: YES), the process of step S6 is performed.

  This threshold value is measured when the environment where the electronic thermometer 100 is placed or when either the temperature measuring unit 11 or the temperature measuring unit 12 is used for body temperature measurement. This is a value corresponding to the time required for the temperature of itself to stabilize and is determined empirically.

  Even if a predetermined time has elapsed since the power was turned on, | Ts− (Ts−1) | and | Ty− (Ty−1) | are each greater than a predetermined value (step S6: YES). This means that the environmental temperature Ty varies greatly even after a predetermined time.

  That is, in such a case, there is a high possibility that both the temperature measuring unit 11 and the temperature measuring unit 12 are out of order, and the body temperature measurement result by the first body temperature measuring unit 14A and the second body temperature measuring unit 14 The reliability of the body temperature measurement results from the above is reduced.

  Therefore, the body temperature measurement operation control unit 14C disallows (prohibits) body temperature measurement by each of the first body temperature measurement unit 14A and the second body temperature measurement unit 14B and displays error information on the display unit 17 in step S6. (Step S7).

  The error information is, for example, sentences such as “the body temperature cannot be measured because the sensor has failed” or “the body temperature cannot be measured because the sensor temperature is not stable”.

  When both | Ts− (Ts−1) | and | Ty− (Ty−1) | calculated in step S3 are equal to or smaller than the predetermined value (step S9: YES), the temperature measuring unit 11 and the temperature measuring unit 12 can be determined to be operating normally, both the body temperature measurement result by the first body temperature measurement unit 14A and the body temperature measurement result by the second body temperature measurement unit 14 have high reliability.

  Therefore, at step S9: YES, the body temperature measurement operation control unit 14C sets a mode in which body temperature measurement by each of the first body temperature measurement unit 14A and the second body temperature measurement unit 14B is permitted (step S10) and measurement. Move to standby state.

  When | Ts− (Ts−1) | is larger than the predetermined value and | Ty− (Ty−1) | is equal to or smaller than the predetermined value (step S11: YES), the body temperature by the first body temperature measuring unit 14A It can be determined that the temperature measurement result by the second body temperature measurement unit 14B is more reliable than the measurement result.

  Therefore, when step S11: YES, the body temperature measurement operation control unit 14C sets a mode that permits only body temperature measurement by the second body temperature measurement unit 14B (step S12), and only body temperature measurement using the temperature measurement unit 12 is performed. A message indicating that it is possible is displayed on the display unit 17 and the measurement standby state is entered.

  When | Ts− (Ts−1) | is equal to or smaller than the predetermined value and | Ty− (Ty−1) | is larger than the predetermined value (step S11: NO), the body temperature by the second body temperature measuring unit 14B It can be determined that the body temperature measurement result by the first body temperature measurement unit 14A is more reliable than the measurement result.

  Therefore, at step S11: NO, the body temperature measurement operation control unit 14C sets a mode that permits only body temperature measurement by the first body temperature measurement unit 14A (step S13), and only body temperature measurement using the temperature measurement unit 11 is performed. A message indicating that it is possible is displayed on the display unit 17 and the measurement standby state is entered.

  In the measurement standby state after step S10, when an instruction for temperature measurement is given by the first body temperature measurement unit 14A, the first body temperature measurement unit 14A predicts using the temperature information detected by the temperature measurement unit 11. Body temperature is determined by the formula. Then, the first body temperature measurement unit 14A corrects the determined body temperature using the environment temperature Ty output from the environment temperature measurement unit 14D, and outputs the corrected value to the display unit 17 as a body temperature measurement result.

  In the measurement standby state after step S10, when an instruction to measure the body temperature is given by the second body temperature measuring unit 14B, the second body temperature measuring unit 14B predicts using the temperature information detected by the temperature measuring unit 12. Body temperature is determined by the formula. Then, the second body temperature measurement unit 14B corrects the determined body temperature using the environment temperature Ts output from the environment temperature measurement unit 14D, and outputs the corrected value to the display unit 17 as a body temperature measurement result.

  When an instruction to measure the body temperature is issued in the measurement standby state after step S12, the second body temperature measurement unit 14B determines the body temperature by using a prediction formula using the temperature information detected by the temperature measurement unit 12, and determines the body temperature. The body temperature is output to the display unit 17 as a body temperature measurement result.

  Step S11: When YES, the reliability of the environmental temperature Ts based on the temperature information detected by the temperature measuring unit 11 is low. For this reason, the reliability of the body temperature measurement result is improved by not correcting the body temperature determined by the prediction formula using the environmental temperature Ts.

  When an instruction to measure the body temperature is given in the measurement standby state after step S13, the first body temperature measuring unit 14A determines the body temperature by using a prediction formula using the temperature information detected by the temperature measuring unit 11. The body temperature is output to the display unit 17 as a body temperature measurement result.

  Step S11: When NO, the reliability of the environmental temperature Ty based on the temperature information detected by the temperature measuring unit 12 is low. For this reason, the reliability of the body temperature measurement result is improved by not correcting the body temperature determined by the prediction formula using the environmental temperature Ty.

  After the measurement standby state, the body temperature measurement is performed by either the first body temperature measurement unit 14A or the second body temperature measurement unit 14B, and then the processing after step S1 is performed again.

  As described above, the electronic thermometer 100 is configured to use the temperature measuring units 11 and 12 used for body temperature measurement also for environmental temperature measurement. For this reason, according to the environmental temperature based on the temperature information detected by the temperature measuring units 11 and 12, only the body temperature measuring unit capable of outputting a highly reliable body temperature measurement result can be used as shown in FIG. Control can be performed.

  Therefore, even in a state where the temperature measuring unit 11 or the temperature measuring unit 12 has failed, or the temperature of the temperature measuring unit 11 or the temperature measuring unit 12 itself or its surrounding temperature is not stable, it is the highest in that state. The body temperature can be measured with high accuracy, and a highly reliable electronic thermometer can be provided.

  Further, according to the electronic thermometer 100, it is not necessary to provide a temperature measuring unit for measuring the environmental temperature necessary for improving the accuracy of the body temperature measurement separately from the temperature measuring unit for measuring the body temperature. For this reason, reduction of the manufacturing cost of the electronic thermometer 100 and compactization are realizable.

  FIG. 6 is a flowchart for explaining a modification of the operation of the electronic thermometer 100 shown in FIG.

  When the operation unit 18 is operated to turn on the electronic thermometer 100 and a predetermined time elapses (step S20: YES), the environmental temperature measurement unit 14D determines the environmental temperature Ts from the temperature information detected by the temperature measurement unit 11. And the ambient temperature Ty is measured from the temperature information detected by the temperature measuring unit 12 (step S21).

  This predetermined time is measured when the environment where the electronic thermometer 100 is placed or when one of the temperature measuring unit 11 and the temperature measuring unit 12 is used for body temperature measurement. This is the time required for the temperature and ambient temperature to stabilize and is determined empirically.

  Next, the body temperature measurement operation control unit 14C calculates a difference (| Ts−Ty |) between the environmental temperature Ts and the environmental temperature Ty measured in step S21, and compares | Ts−Ty | with a threshold Th1 ( Step S22).

  Although the temperature measuring unit 11 and the temperature measuring unit 12 are different in performance and structure, the environmental temperature Ts and the environmental temperature Ty have substantially the same value after the above-described predetermined time has elapsed if no failure has occurred. It is considered that at least one of the temperature measuring unit 11 and the temperature measuring unit 12 is out of order when | Ts−Ty |

  The threshold value Th <b> 1 is a threshold value set to determine such a failure of the temperature measuring unit 11 and the temperature measuring unit 12, and an appropriate value is set according to an allowable range of measurement accuracy of body temperature.

  When | Ts−Ty |> Th1 (step S22: YES), the body temperature measurement operation control unit 14C disallows (prohibits) body temperature measurement by each of the first body temperature measurement unit 14A and the second body temperature measurement unit 14B. The error information is displayed on the display unit 17 (step S23).

  When | Ts−Ty | ≦ Th1 (step S22: NO), the body temperature measurement operation control unit 14C permits body temperature measurement by each of the first body temperature measurement unit 14A and the second body temperature measurement unit 14B (step S24). ), Move to the measurement standby state.

  After moving to the measurement standby state, when the body temperature measurement is performed by the first body temperature measurement unit 14A or the second body temperature measurement unit 14B (step S25: YES), the process returns to step S20, and the predetermined time has elapsed. At that time, the failure determination of the temperature measuring unit 11 and the temperature measuring unit 12 is performed again.

  As described above, according to the electronic thermometer 100, since the temperature measuring units 11 and 12 used for measuring the body temperature are also used for measuring the environmental temperature, the temperature information detected by the temperature measuring units 11 and 12 is used. It is also possible to make a failure determination of the temperature measuring unit 11 and the temperature measuring unit 12 based on the difference in environmental temperature based on the above.

  Therefore, when either one or both of the temperature measuring unit 11 and the temperature measuring unit 12 are out of order, the first body temperature measuring unit 14A or the second body temperature measuring unit 14B performs inaccurate body temperature measurement. Can be prevented, and the reliability of the thermometer can be improved.

  Up to this point, the temperature measuring unit 11 and the temperature measuring unit 12 have been described as contact-type temperature measuring units that detect temperature information by contacting any part of the measurement subject. However, the temperature measuring unit 12 may be a non-contact type temperature measuring unit.

  FIG. 7 is an external perspective view showing an electronic thermometer 100A which is a modification of the electronic thermometer 100 shown in FIG.

  The electronic thermometer 100A has the same configuration as the electronic thermometer 100 except that the electronic thermometer 100A includes a temperature measuring unit 12A instead of the temperature measuring unit 12.

  The temperature measuring unit 12A outputs an electrical signal corresponding to infrared rays emitted from the measurement target site of the measurement subject as detected temperature information. Similarly to the temperature measuring unit 12, the temperature measuring unit 12A is also used to measure the ambient temperature around the electronic thermometer 100A.

  The temperature measuring unit 12A includes a cap 22A, a condenser lens 24 embedded in the center of the cap 22A, and an infrared sensor unit (not shown) built in the case 10.

  The infrared sensor unit includes an infrared sensor that detects infrared rays and outputs an electrical signal corresponding to the infrared rays, and a reference temperature sensor that detects a temperature (reference temperature) around the infrared sensor.

  The infrared sensor included in the infrared sensor unit is disposed at a position facing the condensing lens 24 and detects infrared light emitted from the measurement site and collected by the condensing lens 24.

  FIG. 8 is a view showing a cross section taken along line VIII-VIII of the electronic thermometer 100A shown in FIG.

  As shown in FIG. 8A in FIG. 8, an infrared sensor 26 is provided inside the case 10 at a position facing the condenser lens 24. In addition, a cover member 25 that can be inserted and removed between the infrared sensor 26 and the condenser lens 24 is provided inside the case 10.

  The cover member 25 is movable in the longitudinal direction of the cap 22A by a cover drive motor (described later) provided in the case 10. The cover member 25 is formed of a thin metal plate or the like that has the same temperature (substantially the same temperature) as the temperature of the environment where the electronic thermometer 100A is placed.

  8 shows a state where the cover member 25 is moved from the state of FIG. 8A and the cover member 25 is inserted between the condenser lens 24 and the infrared sensor 26. FIG. In this state, the infrared sensor 26 detects infrared rays emitted from the cover member 25.

  On the other hand, as shown in FIG. 8A, when the cover member 25 is completely retracted from between the condenser lens 24 and the infrared sensor 26, the infrared sensor 26 receives the infrared rays collected from the outside by the condenser lens 24. Can be detected.

  FIG. 9 is a block diagram showing a configuration of the electronic thermometer 100A shown in FIG.

  FIG. 9 is the same as that shown in FIG. 3 except that the temperature measuring unit 12 is changed to the temperature measuring unit 12A and the cover driving motor 20 and the cover member 25 shown in FIG. 8 are added.

  The cover drive motor 20 is a motor for moving the cover member 25, and controls the position of the cover member 25 according to a command from the control unit 14.

  When the environmental temperature measurement unit 14D uses the temperature measurement unit 12A to measure the environmental temperature, the control unit 14 of the electronic thermometer 100A controls the cover drive motor 20 to bring the cover member 25 into the state shown in FIG. 8B. . By being in the state shown in FIG. 8B, the environmental temperature measurement unit 14D can measure the environmental temperature Ty from the temperature information (corresponding to the temperature of the cover member 25) detected by the temperature measurement unit 12A.

  Further, when the body temperature measurement is performed by the second body temperature measurement unit 14B, the control unit 14 controls the cover drive motor 20 to bring the cover member 25 into the state shown in FIG. 8A. By being in the state shown in FIG. 8A, the second body temperature measurement unit 14B can measure the body temperature from the temperature information detected by the temperature measurement unit 12A (corresponding to the temperature of the measurement site of the measurement subject).

  Even with the electronic thermometer 100A configured as described above, the same effect as the electronic thermometer 100 can be obtained.

  In the electronic thermometer 100A, the cover member 25 in the case 10 is moved so that the temperature (= environment temperature) of the cover member 25 can be measured by the infrared sensor 26. However, this configuration is an example and is a non-contact type. Any configuration may be used as long as the ambient temperature can be measured by the temperature measuring unit.

  For example, as described in JP-A-4-2005526, a cover having a hole corresponding to the condenser lens 24 is attached to the case 10 of the electronic thermometer 100A, and the condenser lens 24 is pressed by pressing the cover. The infrared ray that is hidden by the cover and emitted from the cover may be detected by the infrared sensor.

  Up to this point, the two temperature measuring units (the temperature measuring unit 11 and the temperature measuring unit 12 (12A)) are arranged at locations separated from each other on the case 10, but the two temperature measuring units are You may arrange | position in the place where it adjoins.

  For example, as shown in FIG. 10, instead of the temperature measuring unit 12 (12 </ b> A), a temperature measuring unit 12 </ b> B having the same configuration as the temperature measuring unit 11 is provided, and the temperature measuring unit 11 and the temperature measuring unit are provided at the tip of the case 10. It is good also as a structure which arrange | positioned 12B close.

  In addition, so far, the performance of the two temperature measuring units (measured temperature responsiveness to the change in environmental temperature) is different, but the performance of the two temperature measuring units may be the same.

  The two temperature measuring units may be non-contact types.

  In addition, the first body temperature measurement unit 14A and the second body temperature measurement unit 14B both determine the body temperature by the prediction formula, but one or both of these determine the body temperature by the actual measurement formula. Also good. In the actual measurement type body temperature measurement unit, the body temperature may be measured based on the temperature information obtained from the temperature measurement unit without using the environmental temperature.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  As described above, the following items are disclosed in this specification.

  The disclosed electronic thermometer is an electronic thermometer that measures the body temperature of a measurement subject, and includes a first temperature measuring unit that detects temperature information, and first temperature information detected by the first temperature measuring unit. The body temperature is measured using a first temperature measuring unit that measures the body temperature using a second temperature measuring unit that detects temperature information, and second temperature information detected by the second temperature measuring unit. A second body temperature measurement unit that measures the environmental temperature measurement unit that measures an ambient temperature that is an ambient temperature of the electronic thermometer based on at least one of the first temperature information and the second temperature information; , Are provided.

  The disclosed electronic thermometer is configured to operate the first body temperature measurement unit and the second body temperature measurement unit based on the environmental temperature based on the first temperature information and the environmental temperature based on the second temperature information. Is provided with a body temperature measurement control unit for controlling the temperature.

  In the disclosed electronic thermometer, the body temperature measurement control unit is configured to measure the first body temperature according to a change in environmental temperature based on the first temperature information and a change in environmental temperature based on the second temperature information. A mode that allows only body temperature measurement by the unit, a mode that allows only body temperature measurement by the second body temperature measuring unit, and a mode that permits body temperature measurement by each of the first body temperature measuring unit and the second body temperature measuring unit , Including one for setting one of modes in which body temperature measurement by each of the first body temperature measurement unit and the second body temperature measurement unit is not permitted.

  In the mode in which the disclosed electronic thermometer allows the body temperature measurement by each of the first body temperature measurement unit and the second body temperature measurement unit, the first body temperature measurement unit includes the first temperature information, The body temperature is measured using the environmental temperature based on the second temperature information, and the second body temperature measurement unit uses the second temperature information and the environmental temperature based on the first temperature information. Including measuring body temperature.

  In a mode in which the disclosed electronic thermometer allows only the body temperature measurement by the first body temperature measurement unit, the first body temperature measurement unit makes the environment temperature based on the second temperature information non-use, This includes measuring body temperature based on first temperature information detected by the first temperature measuring unit.

  In the mode in which the disclosed electronic thermometer allows only the body temperature measurement by the second body temperature measuring unit, the second body temperature measuring unit disables the environmental temperature based on the first temperature information, and This includes measuring body temperature based on second temperature information detected by the second temperature measuring unit.

  In the disclosed electronic thermometer, the body temperature measurement control unit is configured such that the difference between the environmental temperature based on the first temperature information and the environmental temperature based on the second temperature information is equal to or less than a predetermined value. Allowing the body temperature measurement by each of the one body temperature measuring unit and the second body temperature measuring unit, and when the difference exceeds the predetermined value, each of the first body temperature measuring unit and the second body temperature measuring unit Including those that prohibit body temperature measurement by.

  In the disclosed electronic thermometer, the body temperature measurement control unit determines whether or not the difference is equal to or less than a predetermined value after a predetermined time has elapsed since the electronic thermometer was turned on. It includes what is performed at a timing after a predetermined time has elapsed since body temperature measurement was performed by either the measurement unit or the second body temperature measurement unit.

  In the disclosed electronic thermometer, the first temperature measuring unit and the second temperature measuring unit have different performances.

  In the disclosed electronic thermometer, the first temperature measuring unit is a contact-type temperature measuring unit, and the second temperature measuring unit includes a sensor that detects infrared rays emitted from an object. It is a temperature measurement unit, which is composed of a member that is at substantially the same temperature as the ambient temperature of the electronic thermometer, a position for blocking infrared rays incident from the outside, and an infrared ray incident from the outside reaching the sensor The environmental temperature measuring unit detects the infrared rays emitted from the member in a state where the member has moved to a position where the infrared rays are blocked by the sensor. The environmental temperature is measured from the obtained temperature information.

DESCRIPTION OF SYMBOLS 100 Electronic thermometer 11, 12 Temperature measurement part 14 Control part 14A 1st body temperature measurement part 14B 2nd body temperature measurement part 14C Body temperature measurement operation control part 14D Environmental temperature measurement part

Claims (10)

An electronic thermometer that measures the body temperature of a subject,
A first temperature measuring unit for detecting temperature information;
A first body temperature measuring unit that measures the body temperature using first temperature information detected by the first temperature measuring unit;
A second temperature measuring unit for detecting temperature information;
A second body temperature measuring unit that measures the body temperature using second temperature information detected by the second temperature measuring unit;
An electronic thermometer comprising: an environmental temperature measurement unit that measures an environmental temperature that is an ambient temperature of the electronic thermometer based on at least one of the first temperature information and the second temperature information. The electronic thermometer according to claim 1,
A body temperature measurement control unit that controls operations of the first body temperature measurement unit and the second body temperature measurement unit based on the environment temperature based on the first temperature information and the environment temperature based on the second temperature information. Electronic thermometer equipped with. An electronic thermometer according to claim 2, wherein
The body temperature measurement control unit permits only body temperature measurement by the first body temperature measurement unit according to a change in environment temperature based on the first temperature information and a change in environment temperature based on the second temperature information. Mode for allowing only body temperature measurement by the second body temperature measurement unit, mode for allowing body temperature measurement by each of the first body temperature measurement unit and the second body temperature measurement unit, and the first body temperature measurement An electronic thermometer that sets one of modes in which body temperature measurement by each of the unit and the second body temperature measurement unit is not permitted. An electronic thermometer according to claim 3, wherein
In a mode in which body temperature measurement by each of the first body temperature measurement unit and the second body temperature measurement unit is permitted, the first body temperature measurement unit includes the first temperature information and the second temperature information. An electronic thermometer that measures body temperature using the environmental temperature based on the temperature, and the second body temperature measuring unit measures the body temperature using the environmental temperature based on the second temperature information and the first temperature information. . An electronic thermometer according to claim 4, wherein
In a mode in which only the body temperature measurement by the first body temperature measurement unit is permitted, the first body temperature measurement unit makes the environment temperature based on the second temperature information non-use, and the first temperature measurement unit An electronic thermometer that measures body temperature based on detected first temperature information. An electronic thermometer according to claim 4 or 5,
In a mode in which only the body temperature measurement by the second body temperature measurement unit is permitted, the second body temperature measurement unit makes the environmental temperature based on the first temperature information non-use, and the second temperature measurement unit An electronic thermometer that measures body temperature based on the detected second temperature information. An electronic thermometer according to claim 2, wherein
When the difference between the environmental temperature based on the first temperature information and the environmental temperature based on the second temperature information is less than or equal to a predetermined value, the body temperature measurement control unit and the first body temperature measuring unit and the An electronic device that permits body temperature measurement by each of the second body temperature measurement units and prohibits body temperature measurement by each of the first body temperature measurement unit and the second body temperature measurement unit when the difference exceeds the predetermined value. Thermometer. The electronic thermometer according to claim 7, wherein
The body temperature measurement control unit determines whether the difference is equal to or less than a predetermined value after a predetermined time has passed since the electronic thermometer was turned on, and the first body temperature measurement unit and the second body temperature measurement unit. An electronic thermometer that is performed at a timing after a predetermined time has elapsed since the body temperature was measured by any of the body temperature measuring units. An electronic thermometer according to any one of claims 1 to 8,
The first thermometer and the second thermometer are electronic thermometers having different performances. An electronic thermometer according to any one of claims 1 to 9,
The first temperature measuring unit is a contact type temperature measuring unit,
The second temperature measuring unit is a non-contact type temperature measuring unit including a sensor that detects infrared rays radiated from an object,
Consists of a member that has substantially the same temperature as the ambient temperature of the electronic thermometer, and is between a position where infrared rays incident from the outside are blocked and a position where infrared rays incident from the outside can reach the sensor. And a movable member,
The said environmental temperature measurement part is an electronic thermometer which measures the said environmental temperature from the temperature information obtained by detecting the infrared rays radiated | emitted from the said member in the state which the said member moved to the position which interrupts | blocks the said infrared rays with the said sensor.

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