JP2002202205A - Deep part temperature measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deep part temperature measuring device capable of measuring a deep part temperature speedily and accurately by proper heater control. SOLUTION: This deep part temperature measuring device performs the control for supplying quantity of heat corresponding to a rate of temperature rise of a measuring temperature to a probe 3 (aluminum block 33) by a heater 35 at the initial stage when the probe 3 is mounted on the skin surface to start measurement in addition to the conventional control of heat flow compensation to eliminate heat radiation from the skin surface in a short time and realize a condition in which a deep part temperature can be measured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a deep temperature measuring device (deep body temperature monitor) for measuring a deep temperature of a living body.

[0002]

2. Description of the Related Art Continuous measurement (monitoring) of a deep temperature (deep body temperature) reflecting a subcutaneous (particularly, peripheral) blood flow temperature is required for controlling body temperature and blood flow during anesthesia and awakening of anesthesia in surgery. Monitoring the condition, or continuously measuring the core temperature reflecting the core temperature, such as confirmation of daily fluctuations in body temperature in the case of school refusal in psychosomatic medicine,
Their usefulness has been recognized respectively.

Conventionally, a deep part temperature measuring device measures a deep part temperature by attaching (attaching) a probe for detecting the temperature of the skin surface to the skin surface. The outside of the probe is covered with a heat conductor such as an aluminum block to which a heater is attached, and the heater supplies heat to the heat conductor of the probe. Heat is supplied to the heat conductor by controlling the heater so as to eliminate the temperature difference between the temperature of the heat conductor and the temperature measured on the skin surface, thereby radiating heat from the skin surface (heat dissipation). Can be compensated. Due to the mechanism of the probe that compensates for heat radiation from the skin surface, the heat from the skin surface eventually disappears over time, and the skin surface temperature reflects the subcutaneous deep temperature. Temperature (core body temperature) can be measured. Such methods of measuring the deep temperature are referred to by those skilled in the art as heat flow compensation methods and are well known. Japanese Patent Publication No. 56-4848 discloses a conventional deep temperature measuring device based on such a heat flow compensation method.

However, in such a conventional deep temperature measuring apparatus which only has a heater control for eliminating the temperature difference between the temperature of the heat conductor of the probe and the skin surface, the probe is mounted on the skin surface, It took about 20 minutes for the measured skin temperature to be measured as the deep part temperature due to no heat radiation on the surface. Then, since the measured temperature value in the middle of the process until the deep temperature can be measured has little clinical significance, the time from when the probe is attached to when the deep temperature can be measured is reduced. It was desired. Further, in the conventional deep temperature measuring device, the same heater control is performed even when different types of probes are used depending on the measurement site and the measurement depth, and the heater control can be easily changed for each type of probe. It was not something.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a deep temperature measuring apparatus which can quickly and accurately measure a deep temperature by appropriate heater control.

In particular, in the initial stage of probe mounting, the amount of heat corresponding to the rate of increase in the temperature of the skin surface (actually, the temperature measured by a temperature sensor provided at a position close to the skin surface of the probe) is determined. By controlling the heater so as to supply it to the thermal conductor of the probe (differential control), a state in which heat is not released from the skin surface in a short time, that is, a state in which a deep temperature can be measured in a short time can be realized. It is to provide a measuring device. Another object of the present invention is to provide a deep temperature measuring device that can easily be changed to an appropriate heater control for each type of connected probe.

[0007]

This and other objects are attained by the following inventions (1) to (13). (1) A probe attached to the skin surface of a living body, wherein the probe covers a heat conductor and first temperature measuring means for measuring the temperature of the skin surface and a probe for measuring the temperature of the heat conductor. 2 comprising a temperature measuring means and a heating means for supplying an amount of heat to the heat conductor, and controlling the heating means by a temperature measured by the first temperature measuring means and the second temperature measuring means, thereby controlling the heating means from the skin surface. In the deep temperature measuring device for compensating heat radiation and measuring the deep temperature, the amount of heat to be supplied is determined according to the rate of increase in the temperature measured by the first temperature measuring means, and the heating means is controlled. A first heating control; and a second controlling the heating means by determining the amount of heat to be supplied according to a difference between a temperature measured by the first temperature measuring means and a temperature measured by the second temperature measuring means. Heating control Core temperature measuring device, characterized in that it comprises a control means. (2) The heating control means switches between the first heating control and the second heating control in accordance with a rate of a rise in temperature measured by the first temperature measuring means. 2. The deep temperature measuring device according to 1. (3) When the temperature measured by the second temperature measuring means is high, the heating control means further controls the heating means so as not to supply a heat amount. The deep temperature measuring device according to (2). (4) When the difference between the temperature measured by the first temperature measuring means and the temperature measured by the second temperature measuring means is out of a predetermined range, the second heating control is performed at 0% or 100%. The deep temperature measuring apparatus according to any one of the above (1) to (3), characterized by: (5) The deep temperature measurement according to any one of the above (1) to (4), wherein a parameter used as a condition for determining the amount of heat supplied by the first heating control can be set by a user. apparatus. (6) a probe mounted on the skin surface of a living body, the probe comprising a heat conductor cover and a temperature measuring means for measuring the temperature of the skin surface; and a heating means for supplying heat to the heat conductor. By controlling the amount of heat supplied by the temperature measured by the temperature measuring means, to compensate for heat radiation from the skin surface, in a deep temperature measuring device to measure the deep temperature, in the temperature measuring means, A deep temperature measuring device, comprising: a heating control unit that determines the amount of heat to be supplied in accordance with a rate of increase in measured temperature and controls the heating unit. (7) The deep temperature according to (6), wherein the heating control means further controls the heating means so as not to supply heat when the heat conductor of the probe is at a high temperature. measuring device. (8) The deep temperature measuring apparatus according to the above (6) or (7), wherein a parameter used as a condition for determining the amount of heat supplied by the heating control means can be set by a user. (9) The first to measure the temperature of the covering of the heat conductor and the surface of the skin
A plurality of types of probes including a temperature measurement unit, a second temperature measurement unit that measures the temperature of the heat conductor, and a heating unit that supplies heat to the heat conductor, and a probe selected from the plurality of types of probes. A body detachably connected to the body, and radiating heat from the skin surface by controlling the heating means with a temperature measured by the first temperature measuring means and the second temperature measuring means of the probe connected to the body. In the deep temperature measuring device for measuring the deep temperature, the plurality of types of probes incorporate a ROM in which the types of the probes are stored, and the main body is connected to the selected probe when the selected probe is connected. ROM of selected probe
A deep-type temperature measuring device, wherein the type of the probe stored in the probe is read and the heating means of the selected probe is controlled in accordance with the type of the read probe. (10) The method according to (9), wherein the control of the heating unit is a control performed by determining an amount of heat to be supplied according to a rate of increase in the temperature measured by the first temperature measuring unit. Deep temperature measuring device. (11) The deep temperature measuring device according to the above (9) or (10), wherein the ROM is built in a connector portion of a probe connected to the main body. (12) The ROM further stores calibration information of the first temperature measuring means and the second temperature measuring means,
When the selected probe is connected, the main body reads calibration information stored in the ROM of the selected probe, and performs temperature measurement based on the read calibration information. 9) The deep temperature measuring device according to any one of 9) to (11). (13) The deep temperature measuring apparatus according to (12), wherein the calibration information is stored in a duplicated manner in a plurality of locations of the ROM.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of a deep body temperature measuring apparatus according to the present invention.

FIG. 1 is a schematic external view of a deep temperature measuring apparatus according to an embodiment of the present invention. The deep temperature measuring device 1 includes a device main body 2 and a probe 3 (probe temperature sensing portion 3) for detecting (measuring) the temperature, a probe connector (connector portion) 4 for connecting the device main body 2 and the probe 3, and a probe 3. It comprises a cable 5 for connecting the probe connector 4. The probe 3, the probe connector 4, and the cable 5 are formed integrally, and are called a probe in a broad sense.

The apparatus main body 2 is provided with one main body connector 6, 7 on each side facing the front of the apparatus main body so that two probes (probe connectors 4) can be connected (two channels). . For convenience, the body connector 6
A channel for taking in temperature information from a probe connected to the main body connector 7 is called an A channel, and a channel for taking in temperature information from a probe connected to the main body connector 7 is called a B channel. The deep temperature (deep body temperature) measured in each of the channels A and B is measured by an LED display section 8 composed of an LED display (preferably a 7-segment LED display) on both sides of the upper part of the front of the apparatus main body and an LED. Displayed on the display unit 9. Similarly, the heater control state (described later) of the probe 3 connected to each of the A and B channels is determined by the two-color LED 11 and the two-color LED 1 near the display units 8 and 9, respectively.
2 is displayed. Large color LCD display (display)
In No. 10, a heater control state and a result of temperature measurement can be displayed in a graph as described later. In FIG. 1, the A-channel two-color LED 11 is turned on and the LCD is turned on.
The display unit 10 displays a trend graph with respect to the passage of time of the deep temperature of the A channel. The display contents of the LCD display unit 10 are switched by displaying a selection item with a menu key 15 at the left end when facing the front of the apparatus main body.
A switching key 13 at the right end when facing the front of the apparatus main body,
This can be done by manipulating 14. Various settings (described later) can be made by operating the menu key 15 and the enter key 16 at the left end when facing the front of the apparatus main body.

FIG. 2 is a vertical sectional view of the probe 3.
A thermistor 32 (first temperature measuring means according to claim 1, temperature measuring means according to claim 6) for measuring the temperature of the skin surface via a resin sheet 31 is provided on the surface of the probe 3 that comes into contact with the skin. The probe 3 excluding the contact part with the skin is
The outside is formed and covered with an aluminum block 33 which is a heat conductor, and by making the outside of the probe 3 isothermal,
Heat radiation (heat dissipation) from the skin surface entering probe 3
Is compensable in all directions. The temperature of the aluminum block 33 of the probe 3 is
The temperature is measured by a control thermistor 34 (second temperature measuring means in claim 1) provided inside the third temperature sensor 3. Inside the probe 3, a heater 35 (heating means) is mounted inside the aluminum block 33 via a resin 36. As is well known to those skilled in the art, the heater 35 applies heat to the probe 3 to compensate for heat dissipation (heat dissipation) from the skin surface, and the heat is supplied to the measurement thermistor 32 as described later. And the temperature measured by the control thermistor 34. In order to facilitate this control, it is necessary to secure a thermal resistance between the measurement thermistor 32 and the control thermistor 34. The inside of the probe 3, that is, the inside of the aluminum block 33 is made of urethane foam 3 which is a thermal resistor.
7 are filled. And the measurement thermistor 32
Probe 3 evenly spaced from the outer periphery of aluminum block 33
At the center of the skin contact surface.

FIG. 3 is a sectional view of a probe connector 4 connected to the main unit 2 and a part of a cable 5 coupled thereto. Inside the cable 5, a lead wire 51 for transmitting a temperature signal taken from the measurement thermistor 32 and the control thermistor 34 of the probe 3 is connected to a printed circuit board 41 inside the probe connector 4. An EEPROM 42 is mounted on a printed circuit board 41 of the probe connector 4. The EEPROM 42 is provided at a plurality of positions, and the resistance-temperature conversion of the measurement thermistor 32 and the control thermistor 34 used in each probe 3 is performed. (Calibration information) used at the time of shipment from the factory. When the probe connector 4 is connected to the main body connectors 6 and 7 of the main body device 2, the terminals 43 of the probe connector 4 are connected to a circuit (not shown) inside the main body device 2, and the signals from the measurement thermistor 32 and the control thermistor 34 Temperature signal and EEPRO
Calibration information that is redundantly written (stored) at a plurality of locations in M <b> 42 is taken into main device 2. Since the EEPROM 4 is provided in the probe connector (connector unit) 4 that is directly connected to the main unit 4, it is easy to assemble the probe (such as wiring from the EEPROM 4), and the contents stored in the ROM. Is less affected by noise when read by the main unit.

The calibration of the thermistor (measurement thermistor 32 and control thermistor 34) at the time of factory shipment is performed by writing calibration information into an EEPROM 42 built in the probe (probe connector 4), and therefore, as in the prior art. There is no need to provide a calibration resistor on the probe, which is easy. In order to cope with the case where the data stored in the EEPROM 42 is destroyed due to various causes, the calibration information of the thermistor (the measurement thermistor 32 and the control thermistor 34) is redundantly stored in a plurality of locations of the EEPROM 42, The main unit 2 can capture accurate calibration information. That is, for example, EEPR
When the same calibration information is written in duplicate at four locations of the OM 42, the same calibration information is read only when at least three of the four pieces of calibration information read out by the main unit 2 are the same. By determining that the calibration information is accurate and setting the main unit 2 to take in the specification, the main unit 2 can take in fairly accurate calibration information. In this case, when all pieces of calibration information are different or only two pieces of calibration information are the same, the read calibration information is regarded as unreliable (inaccurate) and is not taken into the main body device 2 and is displayed on the LCD display unit 10. An error message is displayed to inform the user that the probe (consisting of the probe 3, probe connector 4 and cable 5) is unusable, and to prompt the user to replace it with another probe, thereby inaccurate measurement. Can be avoided. When three pieces of calibration information are the same and only one piece of calibration information is different, the LCD display unit 10
A warning may be displayed to inform the user that the probe is usable but not fully reliable.

FIG. 4 is a block diagram of the whole body temperature measuring apparatus of the present embodiment. The entire device is a temperature detection system 1
1, a control system 102, a power supply system 103, and a safety detection system 104.

The temperature detection system 101 includes a probe unit 6
1 and a main body 62. The probe section 61 includes a measurement thermistor 32, a control thermistor 34, a heater 3
5, a cable 5, and an EEPROM 42. The main body 62 includes a measurement thermistor 32 and a control thermistor 34.
Detection circuit 81 for taking in the temperature signal from the heater 35
Drive circuit 82 (heating control means) for driving the EEPRO
A read circuit 83 (read means) for reading information stored in M42.

The control system 102 includes a control unit 63 (including a heating control unit) including a CPU unit 84 and a sub CPU unit 85, an operation unit 64 including a switch 86 for operating the control unit 63 from outside, and a control unit 63. , A display unit 65, a buzzer unit 66, a memory unit 67, and an output unit 68. In this embodiment, most of the signal processing in the control unit 63 is performed in the CPU unit 84.
The sub CPU 85 performs confirmation of runaway of the unit 84 and control of the graphic LCD drive circuit 88 of the display unit 65. The switch 86 of the operation unit 64 includes keys 13 and 14 used for display switching in FIG. 1 and a key 1 used for various settings.
5, 16 and a power switch (not shown). The display unit 65 includes LED display units 8 and 9 for displaying the temperature of FIG.
And two-color LED display unit 1 for displaying heater control status
It comprises an LED drive circuit 87 for controlling the LCDs 1 and 12 and a graphic LCD drive circuit 88 for controlling the LCD display section 10 for displaying various graphs. Buzzer part 66
Consists of a buzzer 89 for notifying a temperature measurement error or the like. In the memory section 67, as in the probe section 61,
An EEPROM 90 is provided.
The accurate calibration information of the thermistor read from M42 is received from the CPU unit 84 and stored. That is, EE
The calibration information of the thermistor that is redundantly written in a plurality of locations of the PROM 42 is sent to the EEPROM 90 when the identity of the content read by the CPU 84 is confirmed and the calibration information is determined to be accurate. And stored (captured). Further, a temperature conversion formula (resistance-temperature conversion formula) created based on the calibration information stored in the EEPROM 90 is stored in a RAM (not shown) in the CPU unit 84, and the temperature value is calculated during the measurement. Used for Output unit 68
Controls the serial output 91 to transfer temperature data and the like taken into the main unit 2 to an external personal computer, thereby enabling data processing on the external personal computer.

The power supply system 103 comprises a power supply input section 69 and a voltage conversion section 70. The power input section 69
C100V power supply 92. In the voltage conversion unit 70, the AC 100V power supply 92 is a 5V digital power supply 93.
And a 12V analog power supply 94. The 5 V digital power supply 93 is mainly used for a logic circuit of the control system 102, and the 12 V analog power supply 94 is mainly used for the drive circuit 82 of the heater 33 and the thermistors 32, 3.
4 is used for the temperature signal detection circuit 81.

The safety detection system 104 comprises a probe abnormality monitoring section 71 having a probe abnormality monitoring circuit 95. Here, the disconnection of the signal from the probe 3 is monitored.

FIG. 5 is a schematic diagram of a circuit centering on the connector section (probe connector, main body connector) of the deep body temperature measuring apparatus of this embodiment. In the connector section, a heater 35, a measurement thermistor 32, and a control thermistor 3 are provided on the probe side.
4. There is an EEPROM 42 in which calibration information is stored, and a heater driving circuit 82 for driving the heater 35, a measuring circuit 811 for taking in a temperature signal from the measuring thermistor 32, and a measuring circuit 812 for taking in a temperature signal from the control thermistor 34 in the main unit. , An EEPROM 42 for reading calibration information. Incidentally, 320, 340
Are circuits for converting a temperature signal from a thermistor into a linearized temperature signal.

When the power supply (not shown) of the apparatus main body 2 is turned on, the CPU section 84 of the control section 63 confirms the connection to the heater 35, the thermistors 32, 34, and the EEPROM 42, and thereby the probe 3 (probe connector 4 The presence or absence of the connection is checked. When the probe 3 is connected, the reading circuit 83 reads the calibration information of the thermistors 32 and 34 stored in the EEPROM 42 and stores it in the EEPROM 90 of the memory unit 67 of the main body. As described above, R in the CPU unit 84
Stored in the AM during the measurement. The presence or absence of the connection of the probe 3 is monitored even during the measurement of the temperature. When the probe 3 (probe connector 4) is disconnected from the main body connectors 6 and 7 of the main body device 2, the connection is stored in the EEPROM 90 of the memory unit 67. The calibration information is deleted, and the temperature display sections 8 and 9 of the channels from which the probe has been disconnected are displayed as “---
― ”. When the probe 3 (probe connector 4) is connected again while the power of the apparatus main body 2 is ON, the probe 3 (probe connector 4) is stored again in the EEPROM 42 in the probe connector 4 in the same manner as when the power is turned ON. The calibration information of the thermistors 32 and 34 is read, and the display of the temperature value on the temperature display sections 8 and 9 of the channel is started.

EE mounted on probe connector 4
The calibration information in the PROM 42 is electrically written and erased. Therefore, if the probe information is inserted into or removed from the main body connectors 6 and 7 while the power to the probe connector 4 is turned on, the calibration information may be destroyed. Therefore, in this embodiment, after detecting that the probe connector 4 is connected to the main body connectors 6 and 7, the EEPROM power is turned on and the EEPROM 42 is turned on.
Is read into the main unit 2 (reading circuit 83), but after the calibration information is read, the EEPROM
Even when the power is turned off and the current to the EEPROM is cut off and the probe 3 (probe connector 4) is unplugged on the way, the calibration information of the EEPROM 42 is not broken.

Next, the heater 3 in the standard setting of this embodiment is used.
The control method 5 will be described. In the present embodiment, the conventional heat flow compensation control (hereinafter, referred to as temperature difference control) based on the temperature difference measured by the measurement thermistor 32 and the control thermistor 34 and the differential value of the temperature measured by the control thermistor 34 (the increase in temperature) ) And two controls of differential control based on (ratio).

Temperature difference control (second heating control of claim 1)
The control amount of the heater 35 is determined by the difference between the temperatures measured by the measurement thermistor 32 and the control thermistor 34, that is, temperature difference = measured temperature in the measurement thermistor−measurement temperature by the control thermistor (according to the temperature difference). You. In this embodiment, the control amount is 100% when the temperature difference is equal to or higher than 1.07 ° C. (predetermined temperature), and the control amount is 0% when the temperature difference is equal to or lower than 0.167 ° C. (predetermined temperature). Proportional to temperature difference as follows (according to temperature difference)
The proportional control is performed to control the heater 35 with a control amount.

Control amount: [Temperature difference ÷ 1.07] × 100% (1) The lower limit of 1.07 ° C. (predetermined temperature) of the temperature difference with the control amount of 100% is appropriate in consideration of the thermal response of the probe. Is set to perform appropriate control. The upper limit of the temperature difference of 0.167 ° C. (predetermined temperature) at which the control amount is 0% is determined by the measurement thermistor 3
2 and the control thermistor 34 are set to perform appropriate control in consideration of the measurement accuracy. That is, by these settings, appropriate control is performed so that the amount of heat exceeding the heat radiation of the skin is not supplied. In this embodiment, as described above, the temperature difference is within the predetermined range (0.167 ° C. to 1.07 ° C.).
° C), the proportional control is not performed, the control is not performed (0% control), or the control is performed at 100%.

In the temperature difference control routine, if the measured temperature of the control thermistor 34 exceeds 42.degree. C. for safety, as shown in a flowchart to be described later, the control amount is independent of the value of the temperature difference. 0%, that is, it is controlled not to supply heat.

In the present embodiment, the differential control (first heating control according to claim 1 and control according to claims 6 and 10) is performed at a temperature of 0.25 ° C. when the temperature measured by the measurement thermistor 32 is between 30 ° C. and 35 ° C. /
When a temperature rise of 4 seconds or more (a predetermined temperature rise rate) is detected, the process is started assuming that the probe 3 is attached to the skin. The control amount of the heater 35 in the differential control according to the present embodiment is the following control amount (control amount corresponding to the temperature increase rate) depending on the condition of the increase rate of the measured temperature in the measurement thermistor 32.

Temperature rise exceeding 0.12 ° C./10 seconds:
Control amount 235/255 × 100% ・ Temperature rise exceeding 0.10 ° C./10 seconds and below 0.12 ° C./10 seconds: Control amount 150/255 × 100% ・ 0.06 ° C./10 seconds Exceeded and temperature rise of 0.10 ° C / 10 seconds or less: Control amount 60/255 × 100% ・ Temperature rise exceeding 0.03 ° C / 10 seconds and 0.06 ° C / 10 seconds or less: Control Amount 20/255 × 100% ・ Temperature rise of 0.03 ° C./10 seconds or less: Control amount 0 /
255 × 100% In the differential control routine, the temperature measured by the measurement thermistor 32 is set to 35
Below ℃, the control amount is 10 regardless of the rate of temperature rise.
0%. If the measured temperature of the control thermistor 34 exceeds 40 ° C. for safety, the following control amount is used.

・ 40-41 ° C .: Control amount 30/255 × 100% ・ 41-42 ° C .: Control amount 20/255 × 100% ・ 42 ° C. or more: Control amount 0/255 × 100% That is, exceeding 42 ° C. In this case, the control amount is controlled to be 0%, that is, not to supply the heat amount, regardless of the rate of temperature rise.

As described above, in the heater control in the present embodiment, in any of the heater control of the temperature difference control and the differential control, when the measured temperature of the control thermistor 34 becomes a predetermined temperature of 42 ° C. or more (high temperature). The control amount is set to be 0%. That is, the control thermistor 34
Is the temperature of the aluminum block 33 of the probe 3, and the heater is controlled so that the subject does not burn on the skin surface in contact with the aluminum block 33.

FIG. 6 shows a flowchart of a control algorithm according to the present embodiment for performing heater control using temperature difference control and differential control. Since the measurement thermistor 32 and the control thermistor 34 measure the temperature in a measurement cycle of several seconds (preferably within 2 seconds), each time the temperature is measured, the measured value is used to start and end S1 to S1.
Update heater control through up to 30 flows.

Hereinafter, the heater control of this embodiment and the process of measuring the deep temperature will be described with reference to the flowchart of FIG.

In measuring the deep part temperature, the probe connector 4 is usually connected to the main body connectors 6 and 7 of the main body 2 and the power supply (not shown) of the main body 2 is turned on. Thereafter, the probe 3 is mounted on the skin surface. From this time, the process enters the flow of the heater control S100 in the flowchart, but in step S101, the differentiation flag indicating that the routine is the differentiation control routine is not turned ON at first. In the probe 3 mounted on the skin surface, the temperature measured by the measurement thermistor 32 rises from 30 ° C. or less to around 35 ° C. of the skin surface temperature in a short time. Step S10
In step 2, the differential flag is set to O in step S103 on condition that the temperature rise in the past 4 seconds is 0.25 ° C. or more (predetermined rate of temperature rise).
Set N to enter the differential control routine. Step S104
Then, the temperature rise value for the past 10 seconds is calculated, and the heat amount is determined in steps S110 and S112 to S116 based on this value through the determinations in S105 to S109. Here, the heat amount is the heat amount given to the probe 3 (the aluminum block 33) by the heater 35 for a predetermined time. For convenience, the heat amount when the heater control amount is 100% is 255. The heat amount and the heater control amount are proportional, and the determination of the heat amount in steps S112 to S116 is merely a paraphrase of the above-described determination of the heater control amount. When the measured temperature of the control thermistor 34 is 40
If the temperature exceeds ℃ (predetermined temperature), for safety, the conditions in steps S120 to S119 are set according to the conditions in steps S117 to S119.
In S122, the heat amount is determined again, and in S130, the heater control routine ends. Step S12
The re-determination of the heat amount of 0 is performed so as not to cause a burn on the skin surface in contact with the aluminum block 33. Steps S103 to S108 and S112 to above
S122 is a differential control routine. [Step S1
Steps 06 to S110 and S113 to S116 correspond to the differential control. Then, when the temperature signals from the measurement thermistor 32 and the control thermistor 34 in the next measurement cycle are obtained, the process enters the heater control S100 again, but since the differentiation flag is ON in step S101, the process jumps to step S104. For a while, the differential control routine is repeated. That is, in the initial stage of the measurement, “yes” is determined in step S105, or “no” is determined in any of steps S106 to S109 because the temperature rise measured by the measurement thermistor 32 is large. The heater control in this routine is repeatedly performed.

Eventually, when the temperature rise measured by the measurement thermistor 32 decreases, the determination in step S109 (condition based on the predetermined rate of temperature rise) becomes "yes", and the heat amount becomes zero in step S110 and the step In S111, the differentiation flag is turned off, and the routine exits from the differentiation control routine.

After exiting from the differential control routine, the present embodiment enters the above-described temperature difference control routine. Step S
Reference numerals 123 to S129 denote temperature difference control routines. [Steps S123 to S126, S128, and S129 are steps corresponding to the temperature difference control. ] Step S123
Then, the temperature difference (compensation temperature) between the measurement temperature (measurement temperature) of the measurement thermistor 32 and the measurement temperature (control temperature) of the control thermistor 34 is calculated.
The heater control amount, that is, the heat amount is determined in step S12.
4 is calculated. Then, the calculated heat amount is re-determined in steps S128 and S129 based on the conditions S125 and S126 of the temperature difference (compensation temperature) and the condition S127 of the measured temperature of the control thermistor 34, and S130.
Ends with Note that the redetermination of the heat amount in steps S128 and S129 requires that appropriate control be performed within the range of the thermal response characteristics of the probe and the accuracy of the thermistor, and that a burn occurs on the skin surface in contact with the aluminum block 33. This is so that there is no Then, when the temperature signals from the measurement thermistor 32 and the control thermistor 34 are obtained in the next measurement cycle, the process again enters the heater control S100, and since the differentiation flag is OFF in step S101,
In step S102, it is determined whether the temperature has risen and whether to enter the differential control routine or to enter the same temperature difference control routine as the previous time, and enter the differential control or temperature difference control routine again. Then, such a heater control is thereafter performed every measurement cycle, by the measurement thermistor 32.
Is repeated each time the temperature signal from the control thermistor 34 is obtained. Generally, in the initial stage of measurement, differential control (first heating control in claim 1 and control in claim 6) is performed in a differential control routine, and thereafter, in steps S123 to S1.
The process proceeds to the temperature difference control routine of 29, where the temperature difference control (second heating control of claim 1) is performed, and the temperature difference control continues.

Although not described in the flowchart of FIG. 6, in the apparatus of this embodiment, when the fluctuation of the measured temperature of the measuring thermistor 32 falls within a predetermined value, the heat radiation from the skin surface is compensated thereafter. , The measured temperature of the skin surface with the measurement thermistor 32 is considered to represent a substantially stable deep temperature. At this time, 2 of the main unit 2
The color LEDs 11, 12 are turned on in green, and the LED display section 8,
9 shows a 4-digit deep temperature (the temperature measured on the skin surface by the measurement thermistor 32 at this time).

FIG. 7 shows that the measured temperature of the measuring thermistor 32, the measured temperature of the controlling thermistor 34, and the heater control amount when the heater control of the present embodiment is performed are determined by elapse of time after the probe 3 is mounted on the skin surface. (Seconds). Graph A shows the temperature measured by the measurement thermistor 32 (° C.), graph B shows the temperature measured by the control thermistor 34 (° C.), and graph C shows the heater control amount (%). In the initial stage of the measurement (up to around 180 seconds) as shown in the graph C, a stepwise differential control is performed, and as shown in the peak around 120 seconds in the graph B, the probe 3 (the aluminum block 33) has a large difference. It can be seen that heat is supplied. Heater control is
Around 180 seconds, the control shifts from the differential control to the temperature difference control. For a while, the temperature measured by the control thermistor 34 is larger than the temperature measured by the measurement thermistor 32. The state of 0% continues. (This is because the compensation temperature in step S123 is negative and the determination in step S126 is "yes" in the flowchart of FIG. 6.) After about 300 seconds, the proportionality of compensating for the heat radiation from the skin while slightly changing the heater control amount. Control (temperature difference control) continues. In the state of the temperature difference control after about 300 seconds, the control thermistor 3
As can be seen from the fact that the measurement temperature of No. 4 is lower than the measurement temperature of the measurement thermistor 32, in this embodiment, appropriate heater control is performed without giving too much heat. The measurement temperature of the measurement thermistor 32 is about 300 seconds, and is in a stable state (a state in which the temperature rise is substantially eliminated).

FIG. 8 is a graph in which the heater control is performed only by the temperature difference control for comparison. This is the control performed by the conventional deep temperature measuring device. The conditions of the temperature difference control in this case are the same as in the case of the present embodiment in FIG. That is, when the temperature difference is 1.07 ° C. or more, the control amount is 100%, when the temperature difference is 0.167 ° C. or less, the control amount is 0%. . Then, the measured temperature of the control thermistor 34 becomes 42
When the temperature exceeds ℃, the control of the heater 35 is not performed. FIG.
Similarly, graph A is a graph of the temperature measured by the measurement thermistor 32 (° C.), graph B is a graph of the temperature measured by the control thermistor 34 (° C.), and graph C is a graph of the heater control amount (%). The graph C of the heater control amount is not a step-like graph as in FIG. 7 but a continuous curve graph since the differential control is not used. Also,
Graph B is appropriately controlled so that the temperature measured by the control thermistor 34 does not always exceed the temperature measured by the measurement thermistor 32 of Graph A. However, only by such temperature difference control, the control amount of the heater 35 is controlled so that the measurement temperature of the control thermistor 34 always follows the measurement temperature of the measurement thermistor 32, but the measurement temperature of the measurement thermistor 32 rises slowly. By the way, the amount of heat given from the heater 35 per predetermined (unit) time is very small. Therefore, in FIG. 8, the measurement thermistor 3
It can be seen that the measured temperature of No. 2 is still in a rising process even after 600 seconds. As a result, the heat radiation from the skin surface disappears and it takes about 2
It takes 0 minutes.

Next, the display and notification functions of the main unit 2 of this embodiment will be described.

The lighting state of the two-color LEDs 10 and 11 changes depending on the state of heater control. That is, in the differential control, the lamp is lit red during the control of the heater control amount of 100%,
Red blinks during other non-100% control. After the temperature difference control is started, it blinks green. Then, when the deep part temperature is measured, it turns on green.

The LED display units 8 and 9 can display a four-digit temperature numerical value, and the temperature display when the deep temperature is measured at the measurement temperature of the measurement thermistor 32 is a four-digit display. The measured temperature of the measurement thermistor 32 until the deep temperature is measured is displayed in three digits. With such a display,
It can be determined whether or not the temperature indicated as the deep temperature on the LED display units 8 and 9 is the deep temperature.

Although not shown in the present embodiment, a buzzer or a speaker is used to provide sound notification at the start and end of the differential control and the temperature difference control, and when the deep temperature is measured. Can also. With such a mechanism,
Even if the measurer does not always look at the apparatus main body 2 during the measurement, it is possible to grasp the control state and the time of measurement of the deep temperature.

On the color LCD display section 10, the measured deep temperature is displayed in a graph. In the graph, the deep temperature is displayed for each set time as time elapses. As the graph display of the deep temperature, for a single channel, in addition to the dot display as shown in FIG. 1, a bar graph display as shown in FIG. 9 can also be performed. In addition, as shown in FIG. 10, the difference between the deep temperatures measured in two channels, that is, A channel and B
The difference between the deep temperatures measured in the channels can also be displayed graphically. Further, as shown in FIG. 11, the measured deep temperatures of the two channels A and B can be simultaneously displayed as a line graph with the passage of time. These graph displays can be selected by pressing the right arrow key 13 of the apparatus main body 2.

The color LCD display unit 10 is mainly used for displaying the body temperature in a graph. The setting for displaying the heater control state until the temperature in the deep part can be measured, or the setting for continuously displaying the heater control state. Is also possible. Switching from the deep temperature graph display to the heater control state display is performed by the down arrow key 14 on the right end of the apparatus main body 2.

FIGS. 12A and 12B show the heater control amounts during the differential control (routine) and the temperature difference control (routine), respectively. FIG. 12A shows the shape of a probe for each channel of A and B. The drawn probe is divided into blue and red in four stages, and the heater control amount of the differential control is shown. Can be displayed. In the display where the heater control amount is 100%, the entire probe is blue (black in the figure), and when the heater control amount is reduced, there are four levels of red (in the figure, the parts other than black in the probe) Increases, and the heater control amount becomes 0
At%, the entire probe is displayed in red. still,
(A) "QUICK MODE" indicates that the heater control amount is in the differential control (routine) mode in which the deep temperature can be measured in a short time. FIG.
In (b), similarly to (a), the shape of the probe is drawn for each channel of A and B, but the temperature difference control ( The heater control amount of the routine can be displayed.
When the heater control amount is 90 to 100%, five arrows and seven arrows
When 0 to 89%, four arrows, when 50 to 69%, three arrows, when 30 to 49%, two arrows, 10 to 29%
, One arrow is displayed, and 0 to 9% indicates zero arrow.

By pressing the menu key 15 of the apparatus main body 2, it is possible to shift to the setting menu screen. In the setting menu screen, “Recording interval”, “Heat flow control”, “Disconnection detection”, “Communication condition”, “Display illumination”, “Time setting”,
Settings can be made for the seven functions of the “graph”. In the “recording interval”, a time interval for recording the measured value of the deep temperature is set literally. In “time setting”, the time is set, and in “display illumination”, the illuminance of the display screen is set. In "disconnection detection", the condition for detecting disconnection of the probe 3,
In the “communication conditions”, parameters serving as conditions such as a communication speed at the time of data output are set. FIG. 13 and FIG. 14 are setting screens of “heat flow control” and “graph”, respectively. FIG.
On the setting screen of “3. Heat flow control”, various parameters of differential control are set. In the start item, No. 1 to No.
No. 4, “None” and “No. 1 to No. 4 can be set. The start item is a condition for entering the differential control. Specifically, four rise values (parameters) of the measurement temperature of the measurement thermistor in step S102 in FIG. 6 for 4 seconds are prepared and selected and set. “None” is a setting in which differential control is not performed. The item of transition is a set of various conditions in the differential control, specifically, a set of values (parameters) such as the rate of temperature rise in steps S105 to S109. In this way, the parameters of the “heat flow control” are set to standard settings such as a deep temperature measurement site (forehead, limbs, etc.), measurement conditions (such as inserting gauze between the probe 3 and the skin), and a measurement purpose (anesthesia). Time monitoring, daily fluctuation monitoring). In addition, "heat flow control"
In the setting, the measurement part and the measurement purpose are set in advance as setting items, and the optimum values are automatically selected as the values of various parameters in the flowchart of FIG. 6 according to the measurement part and the measurement purpose. It may be. On the "Graph" setting screen in FIG. 14, the probe display, the temperature range, and the display time can be set. 9, 10, and 1
Referring to graphs such as 1, the scale on the vertical axis of the graph is adjusted in the temperature range, and the scale on the horizontal axis of the graph is adjusted in the setting of the display time. AUTO in the temperature range is such that the scale on the vertical axis of the graph is optimally adjusted according to the measured value of the deep temperature. When the probe display is ON, before displaying the temperature value graph, FIG.
This is a setting for displaying the control state as shown in (b). In the case of OFF in the probe display, such setting is not performed.

The above various settings are selected by displaying the selection items with the menu key 15 at the left end of the apparatus main body 2.
The selection is made by using the right arrow key 13 and the down arrow key 14 at the right end of FIG.

In this embodiment, several types (for example, three types) of probes are prepared, and an appropriate probe is appropriately selected depending on a measurement site or a measurement depth, so that the probe can be detachably connected to the main unit 2. You can also.

FIGS. 15 (a), 15 (b) and 15 (c) are schematic diagrams of actual shapes of three types of probes in which the size of the probe temperature sensing portion 3 prepared in this embodiment is different from large, medium and small. It is.
The probe temperature sensing portions 3 of the three types of probes (a), (b), and (c) are all flat and substantially cylindrical, and have dimensions of about 1 cm in height, but have a contact surface of the cylinder. The diameter is about 5cm, about 2.5cm, about 1.5cm and (a)
(B) It becomes small in order of (c). That is, the contact area and the volume of the probe temperature sensing part 3 are reduced in the order of (a), (b), and (c).

The probe (a) having a large probe temperature sensing portion 3 (hereinafter referred to as a large probe) is suitable for measuring deep portions with little influence of disturbance, but has a relatively large skin surface as a measurement site. In addition, the probe has a large heat capacity and requires a long time for thermal compensation, and a relatively long time is required for measuring the deep temperature. On the other hand, the probe (c) having a small probe temperature sensing part 3 (hereinafter, referred to as a small probe) requires only a small skin area as a measurement site, and has a small heat capacity of the probe and thus does not require much time for heat compensation. However, it is relatively susceptible to disturbances, and it is difficult to measure the temperature at a relatively deep part. As described above, by preparing a plurality of types of probes, it is possible to appropriately cope with a measurement site or a measurement depth.

In the specification in which a plurality of types of probes can be detachably connected to the main unit 2, not only the thermistor calibration information but also the type of probe is written in an EEPROM 42 built in the probe (probe connector 4). (Remembered). In addition, in the EEPROM 90 of the memory unit 67 of the main unit 2, a set of parameters for the optimal differential control of the standard setting (FIG. 6) is set according to the type of the probe.
Of the measurement thermistor 32 per 10 seconds as a branch condition of Steps S105 to S109 (a set of a rise rate of the measurement temperature). The optimal differential control parameter set is such that when the probe is small, the heat capacity of the probe is smaller than when the probe is large, so that even a small amount of heating of the heater causes a large change in the temperature. In general, it depends on the type of the probe, for example, it is necessary to perform a control for relatively increasing the rate of increase in the measured temperature, which is a branch condition in steps S105 to S109 in FIG.

When the probe connector 4 is connected to the main body connectors 6 and 7, the type of the probe is read by the main unit 2 (reading circuit 83) together with the thermistor calibration information, and according to the type of the read probe. The set of parameters for standard setting of optimal differential control is
Are read from the EEPROM 90 of the memory unit 67, and the differential control is performed based on this set of parameters.

In the above specification, the parameters set for each type of probe relate to the differential control.
(Temperature difference threshold of 1.07 ° C to make 00%, threshold of temperature difference 0.167 ° C to make the control amount 0%, etc.) and parameters related to the conditions for entering the differential control (rise of the measurement temperature of the measurement thermistor for 4 seconds) (Such as a value of 0.25 ° C.) can also be set to a specification that can be set for each type of probe.

Although the preferred embodiment of the deep temperature measuring apparatus of the present invention has been described above, the present invention is not limited to this.

[0054]

As described above, the deep temperature measuring apparatus of the present invention controls the heater so that the amount of heat corresponding to the rate of increase in the temperature of the skin surface is supplied to the probe (aluminum block) (differential). Control), so there is no heat radiation from the skin surface after attaching the probe, ie,
The time required for measuring the deep temperature can be shortened, and the deep temperature can be measured in a short time. Therefore, in particular,
Useful for short-time surgery.

Further, in addition to the above control, the deep temperature measuring apparatus of the present invention provides a conventional control (temperature difference control) for supplying a heat amount corresponding to the temperature difference between the temperature of the skin surface and the temperature of the probe (aluminum block). By using the combination of (1) and (2), it is possible to maintain a state where the deep part temperature can be measured without heat radiation from the skin surface.

Further, the deep temperature measuring apparatus of the present invention provides a control (differential control) for supplying a heat amount corresponding to a rate of increase in the temperature of the skin surface, a temperature of the skin surface and a temperature of the probe (aluminum block). By switching the control (temperature difference control) that supplies the amount of heat according to the difference according to the condition according to the rate of temperature rise on the skin surface, it is possible to efficiently and deeply measure the deep temperature in a short time. The state can be maintained stably.

In the deep temperature measuring apparatus of the present invention, when the temperature of the probe (aluminum block) is high, no heat is supplied, so that no burns occur on the skin surface in contact with the aluminum block.

Further, the deep temperature measuring apparatus of the present invention performs 0% or 100% control when the temperature difference between the skin surface and the probe (aluminum block) deviates from a predetermined range, thereby enabling the thermistor to operate. According to the temperature measurement accuracy and the thermal response characteristics of the probe, the heat radiation from the skin can be appropriately compensated without giving too much heat.

In the deep temperature measuring apparatus according to the present invention, in the control (differential control) for supplying the amount of heat in accordance with the rate of increase in the temperature of the skin surface, various parameters for determining the amount of heat to be supplied are used by the user (measurement person). ) Can be set, so that heater control suitable for the measurement site and measurement conditions can be realized.

Also, in the deep temperature measuring apparatus of the present invention, a probe selected from a plurality of types of probes is connected to the main body, and the main body is stored in a ROM built in the probe when the probe is connected. Since the type of the probe is read and the heating means is controlled according to the type of the selected probe, appropriate heater control can be easily realized for each type of the probe. In particular, when controlling the heater so that the amount of heat corresponding to the rate of increase in the temperature of the skin surface is supplied to the probe (aluminum block) (differential control),
Appropriate heater control can be easily realized for each type of probe. Here, since the ROM is built in the connector portion of the probe connected to the main body, assembly of the probe (wiring from the ROM, etc.) is easy, and
When the content stored in the OM is read by the main unit, the content is less affected by noise.

Further, in the deep temperature measuring apparatus of the present invention, since the calibration information of the temperature measuring means (thermistor) is written (stored) in the ROM built in the probe, a resistor for calibration is used for the probe. Compared to setting
Calibration of the temperature measuring means (thermistor) at the time of factory shipment is easy. In addition, since the calibration information of the temperature measuring means (thermistor) is written in a plurality of locations in the ROM, accurate calibration information can be taken into the main body.

[Brief description of the drawings]

FIG. 1 is an external view of a deep temperature measuring device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a probe according to an embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of a connector section according to the embodiment of the present invention.

FIG. 4 is a block diagram of the entire apparatus according to the embodiment of the present invention.

FIG. 5 is a circuit centered on a connector section according to an embodiment of the present invention.

FIG. 6 is a flowchart of heater control according to the embodiment of the present invention.

FIG. 7 is a graph showing a temperature rise caused by heater control according to the embodiment of the present invention.

FIG. 8 is a graph showing a temperature rise by a conventional heater control.

FIG. 9 is a bar graph display of a measured temperature of a single channel according to the embodiment of the present invention.

FIG. 10 is a difference bar graph display of measured temperatures of two channels according to the embodiment of the present invention.

FIG. 11 is a line graph display of measured temperatures of two channels according to the embodiment of the present invention.

FIG. 12 is a display of a control state according to the embodiment of the present invention.

FIG. 13 is a setting screen for differential control according to the embodiment of the present invention.

FIG. 14 is a graph display setting screen according to the embodiment of the present invention.

FIG. 15 is a schematic view of three types of probes prepared in an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Deep part temperature measuring device 10 ... LCD display part 101 ... Temperature detection system 102 ... Control system 103 ... Power supply system 104 ... Safety detection system 11,12 ... Two-color LED 13,14 ... Switch key 15 ... Menu key 16 ... Enter key 2 ... Device body 3 ... Probe (probe temperature sensing part) 31 ... Resin sheet 32 ... Measurement thermistor 320 ... Linearization circuit of temperature signal of measurement thermistor 33 ... Aluminum block 34 ... Control thermistor 340 ... Linearization of temperature signal of control thermistor Circuit 35 Heater 36 Resin 37 Urethane resin 4 Probe connector 41 Printed circuit board 42 EEPROM 43 Terminal 5 Cable 51 Lead wire 6, 7 Body connector 61 Probe part 62 Body 63 Control part 64 operation section 65 display section 66 buzzer section 6 7 Memory section 68 Output section 69 Power supply input section 70 Voltage conversion section 71 Probe abnormality monitoring section 8, 9 LED display section 81 Detection circuits 811, 812 Measurement circuit 82 Heater drive circuit 83 EEPROM Read circuit 84 CPU part 85 Sub CPU part 86 Switch 87 LED drive circuit 88 Graphic LCD drive circuit 89 Buzzer 90 EEPROM 91 Serial output

Claims (13)

[Claims] 1. A probe mounted on the skin surface of a living body, said probe comprising a heat conductor cover and first temperature measuring means for measuring the temperature of said skin surface, and measuring the temperature of said heat conductor. And a heating means for supplying heat to the heat conductor, and controlling the heating means based on the temperatures measured by the first temperature measuring means and the second temperature measuring means. In the deep temperature measuring device for compensating heat radiation from the surface and measuring the deep temperature, the amount of heat to be supplied is determined according to the rate of increase in the temperature measured by the first temperature measuring means, and the heating means is determined. Controlling the first heating control to be controlled, and determining the amount of heat to be supplied according to a difference between the temperature measured by the first temperature measuring means and the temperature measured by the second temperature measuring means. The second heating control Core temperature measuring device, characterized in that it comprises the cormorants heating control means. 2. The heating control means switches between the first heating control and the second heating control in accordance with a rate of increase in temperature measured by the first temperature measuring means. 2. The deep temperature measuring device according to 1. 3. The heating control means further controls the heating means so as not to supply heat when the temperature measured by the second temperature measuring means is high. Or the deep part temperature measuring device according to claim 2. 4. The method according to claim 1, wherein the difference between the temperature measured by the first temperature measuring means and the temperature measured by the second temperature measuring means is out of a predetermined range. 2. The control according to claim 1, wherein the control is 100%.
The deep temperature measuring device according to claim 3. 5. The deep temperature according to claim 1, wherein a parameter used for determining the amount of heat supplied by the first heating control can be set by a user. measuring device. 6. A probe mounted on the skin surface of a living body, said probe comprising a heat conductor cover and temperature measuring means for measuring the temperature of said skin surface, and a heating device for supplying heat to said heat conductor. Means for controlling the amount of heat to be supplied based on the temperature measured by the temperature measuring means, thereby compensating for heat radiation from the skin surface, and measuring the deep temperature. And a heating control means for controlling the heating means by determining the amount of heat to be supplied in accordance with a rate of increase in temperature measured by the means. 7. The deep portion according to claim 6, wherein said heating control means further controls said heating means so as not to supply heat when the heat conductor of said probe is at a high temperature. Temperature measuring device. 8. The deep temperature measuring apparatus according to claim 6, wherein a parameter used for determining the amount of heat supplied by said heating control means can be set by a user. 9. A first temperature measuring means for measuring the temperature of the cover and skin surface of the heat conductor, a second temperature measuring means for measuring the temperature of the heat conductor, and a heating means for supplying heat to the heat conductor. A plurality of types of probes comprising: and a main body to which a probe selected from the plurality of types of probes is detachably connected, wherein the first temperature measuring means and the second temperature measurement of the probe connected to the main body are provided. By controlling the heating means by the temperature measured by the means, the heat radiation from the skin surface is compensated, and in the deep temperature measuring device for measuring the deep temperature, the plurality of types of probes are stored in the type of the probe. The main body includes a ROM, and when the selected probe is connected, the R of the selected probe is stored.
A deep part temperature measuring device, wherein a type of a probe stored in an OM is read, and control of heating means of the selected probe is performed according to the type of the read probe. 10. The method according to claim 9, wherein the control of the heating means is performed by determining an amount of heat to be supplied in accordance with a rate of temperature rise measured by the first temperature measuring means. The deep temperature measuring device as described in the above. 11. The deep temperature measuring device according to claim 9, wherein the ROM is built in a connector portion of the probe connected to the main body. 12. The ROM further stores calibration information of the first temperature measuring means and the second temperature measuring means, and the main body is configured to execute the selection when a selected probe is connected. 12. The deep temperature measuring device according to claim 9, wherein the calibration information stored in the read ROM of the probe is read, and the temperature is measured based on the read calibration information. 13. The calibration information as set forth in claim 12, wherein the calibration information is redundantly stored in a plurality of locations of the ROM.
2. The deep temperature measuring device according to 1.