JPH0343572B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electronic temperature measuring device.

Recently, electronic watches have become more multi-functional, and for example, as shown in Utility Model Application Publication No. 89371 of 1971, electronic watches are equipped with an electronic thermometer, and an alarm sounds when the temperature exceeds a certain level. It is known that it emits

However, there are devices such as wristwatches that are worn on the human body, and in such cases, it is not possible to accurately measure the outside temperature because it is affected by body temperature, and notifications such as alarm sounds may also be incorrect. I get used to it.

This invention was made in view of the above-mentioned circumstances, and its purpose is to not only accurately measure and display the outside temperature even if it is affected by body temperature, but also to keep the outside temperature at a preset temperature. The purpose is to provide an electronic temperature measurement value that can accurately notify the temperature.

Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings. This embodiment shows a case where the present invention is applied to an electronic wristwatch equipped with a temperature measuring device. In FIG. 1, reference numeral 1 indicates a display device provided on the front side of the electronic wristwatch. At the bottom of this display device 1, there is a first numerical display 2 that digitally displays time information and temperature setting temperature of a temperature alarm. In addition, in the middle part, there is a character display 3 that displays day of the week information and display mode information in alpha alphabet letters, and a second character display that digitally displays date information and measured temperature information.
Numerical display bodies 4 are disposed, respectively, and furthermore, an analog display body 5 for displaying measured temperature information in analog form is disposed in the upper part. This analog display body 5
is composed of two triangular display elements on the left and right and 40 display elements arranged in a straight line. Above the 40 display elements, there are temperature display scales corresponding to every 5, 0, 0,
5, 10,...35, 40 are fixedly displayed, the left triangular display element above displays temperatures below 0℃, the right triangular display element displays temperatures above 41℃, and the 40 display elements display temperatures below 0℃. It displays temperatures from 1°C to 40°C in units of 1°C. Furthermore, a temperature sensor 6 is provided on the front of this wristwatch.

The mounting structure of the temperature sensor 6 is as shown in FIGS. 2 to 4. That is, the sensor holding member 7 formed in a substantially cylindrical shape is made of ceramic or synthetic resin, and has an opening that serves as a sensor housing hole 8 . This storage hole 8
A temperature sensor 6 is housed approximately in the center of the housing. The temperature sensor 6 is held by a filler 9 formed by filling glass powder into the storage hole 8 and melting and solidifying the glass powder. The temperature sensor 6 has a thermistor element 6a housed and protected within a spherical glass body 6b, and a pair of lead wires 6c of the thermistor element 6a are drawn out from the glass body 6b. And the lead wire 6c is
The holding member 7 is led out from a pair of small holes 8a formed at the lower end of the storage hole 8 to the lower surface of the holding member 7. A pattern electrode 10 is formed on the lower surface of the holding member 7, and a lead wire 6c is fixed to the pattern electrode 10 with a conductive adhesive 11. The holding member 7 holding the temperature sensor 6 in this manner is inserted into a through hole 14 formed in the watch case 13 via a packing 12. A pair of conductive coil springs 15 are interposed between the holding member 7 and the circuit board 14, and the pattern electrode 10
and the circuit board 14 are electrically connected.

Next, the circuit configuration of this electronic wristwatch will be explained with reference to FIGS. 5 to 7. The reference clock signal output from the oscillation circuit 17 constituting the clock circuit 16 is frequency-divided into a 1-second signal (1 Hz signal) by the frequency dividing circuit 18, and sent to the counter circuit 19, where it is counted. . This counter counting circuit 19 receives time information of hours, minutes, and seconds, day information of the week, based on the one second signal.
Date information of the month and day is counted and outputted and sent to the display device 1 via the display switching control section 20.

Further, the switch section 21 includes manual switches S ₁ to _{S 4} provided outside the watch case, and a manual switch S ₅ provided inside the watch case. Switch _S1 is a switch for measuring and canceling the temperature at that point in time when it is operated.Switch _S2 is a mode changeover switch that switches between temperature alarm setting mode, temperature measurement mode, and time mode.Switch _S3 ,S ₄ is
In temperature alarm setting mode, switch S ₃ is used to set the desired alarm temperature.
Switch S 4 is a switch that increases the alarm temperature by +1℃ each time it _is operated, and Switch S ₄ is a switch that decreases the alarm temperature by -1℃ each time it is operated. This is a switch that specifies whether the case is made of plastic, for example, a metal case, a plastic case, or an insert case. The outputs of these switches S ₁ to S ₄ and S ₅ are respectively given to the switch control section 22 .

The switch control unit 22 outputs various control signals according to the output of the switch unit 21, and outputs display switching commands to the display switching control unit 20 and signals a to g to the temperature measuring device 23. . signal b
is applied to the OR gate 24 to which the 1P (pulse)/1M (minute) signal output from the counting circuit 16 is input. The output of this OR gate 24 is a temperature sensor 6, an A/D (analog/digital) conversion circuit 25 that converts the temperature detected by this temperature sensor 6 into a digital value, and a temperature converted by this A/D conversion circuit 25. are respectively given to a temperature correction circuit 26 that corrects based on the influence of the human body,
These are operation commands for operating each circuit. Also,
Signal a is a signal that specifies the material of the watch case.
It is applied to the temperature correction circuit 26. Note that since thermal conductivity differs depending on the material of the watch case, the influence of body temperature on the temperature sensor 6 differs depending on the material of the watch case. Therefore, the temperature correction circuit 2
6 corrects the temperature converted by the A/D conversion circuit 25 according to the material of the watch case. Further, the signals c to g are given to the temperature storage circuit 27, and the signals c to f are signals for setting an alarm temperature in the temperature storage circuit 27. Note that the temperature storage circuit 27 is configured to be able to set two types of alarm temperatures. Further, the signal g is a signal for selectively outputting two types of alarm temperatures set in the temperature storage circuit 27 to the display switching control section 20.

The alarm temperature set in the temperature storage circuit 27 is sent out in accordance with the output of the OR gate 24, and given to each temperature comparison circuit 28 into which the corrected temperature is input from the temperature correction circuit 26. This temperature comparison circuit 28 compares the magnitude of both input temperature data and detects whether or not the corrected temperature has reached the alarm temperature. When the corrected temperature reaches the alarm temperature, it outputs an alarm signal. Sound alarm device 29
It is now possible to generate an alarm sound.

This sound alarm device 29 generates an alarm sound for a predetermined period of time, for example, 5 seconds, only when the corrected temperature exceeds or falls below the alarm temperature.

The temperature converted by the A/D conversion circuit 25 is read into the latch 30, and the temperature corrected by the temperature correction circuit 26 is read into the latch 31.
The signals are sent to the display switching control section 20, respectively.

Next, the switch control section 22 and the display switching control section 20 will be explained in detail with reference to FIG. The switch control section 22 is provided with one-shot circuits 32-36, respectively, which output pulse signals when the operation signals of the corresponding switches _S1 - _S4 are applied. The pulse signal output from the one-shot circuit 32 is applied to the T input terminal of the trigger flip-flop 37 to invert its output. The Q and output of this flip-flop 37 are provided to a decoder 38, respectively. Further, the pulse signal output from the one-shot circuit 33 is applied to the ternary counter 39, and increments its contents by +1. The ternary counter 39 is a one-shot circuit 33.
Depending on the output, its contents will be "0", "1", "2",
It changes like "0", ..., and its contents "0", "1",
"2" corresponds to the clock mode, temperature measurement mode, and temperature alarm setting mode, respectively, and each bit output is given to the decoder 38, respectively. Furthermore, the pulse signals outputted from the one shot circuits 34 and 35 are given to the decoder 28, and the signal a outputted from the one shot circuit 36 is sent out from the switch control section 22.

The decoder 38 is composed of a decoder section 38-1 having an AND gate function, and decoder sections 38-2 and 38-3 having an OR gate function, and decodes signals from lines _l1 to _l13 according to the combination of input signals. Send output. The decoded output from line _l1 is given to a one-shot circuit 40,
The one-shot circuit 40 outputs a pulse signal b. The decoded outputs from lines _l2 to _l8 are display switching commands output to the display switching control section 22. The decoded outputs from lines l ₉ to _{l 13} are signals c to g that are output to the temperature measuring device 23 .

The display switching control section 22 includes gate circuits 41 to 43 to which date information, day of the week information, and time information are inputted correspondingly from the counting circuit 19, and a gate circuit 44 to which the set temperature is inputted from the temperature storage circuit 27. It has gate circuits 45 and 46 to which the corrected temperature is input from the temperature correction circuit 26, and gate circuits 47 and 48 to which the temperature converted by the A/D conversion circuit 25 (uncorrected temperature) is input. The gate circuits 41 to 46 are controlled to open and close according to display switching commands input from lines _l2 to _l7 , and
Gate circuits 47 and 48 are controlled to open and close in response to a display switching command input from line _l8 . And gate circuits 41, 46,
The output contents of 47 are sent to the second numerical display 4 and are switched and displayed. The output contents of the gate circuit 42 are sent to the character display 3 and displayed. This character display body 3 is given the outputs of lines _l5 and _l8 , and when the character display body 3 is given the output of line _l5 , the display content of the second numerical display body 4 is A/
Displays mode information (TE-) that clearly indicates the temperature converted by the D conversion circuit 25, that is, the uncorrected temperature, and also displays the first numerical display when the output of line _l8 is given. Mode information (TA-) indicating that the displayed content of No. 2 is the set temperature of the temperature storage circuit 27 is displayed. Further, the output of line _l5 is given to the first numerical display 2. In this case, the first numerical display 2 indicates Celsius in its lower digits. (°C) is now displayed. Furthermore, the gate circuit 43,
The output contents of 44 are sent to the first numerical display 2 for switching display, and the output contents of gate circuits 45 and 48 are sent to the analog display 5 for switching display.

Next, the temperature correction circuit 26, temperature storage circuit 27, and temperature comparison circuit 28 will be explained in detail with reference to FIG. The temperature correction circuit 26 is the A/D conversion circuit 25
The temperature converted in is input to the arithmetic circuit 50 via the latch 49. This arithmetic circuit 50 is adapted to correct the temperature converted by the A/D conversion circuit 25 based on the following equation when the output of the OR gate 24 is given.

Ta=an・T+bn Ta: outside temperature, T: temperature detected by sensor 6 when the watch is carried, an: temperature coefficient, bn: initial value In other words, the relationship between the temperature detected by temperature sensor 6 (sensor temperature) and the outside temperature is , as shown in FIG. Here, when the watch is not carried, that is, when it is removed from the wrist, the sensor temperature changes equivalently in proportion to the outside air temperature, as shown in A of FIG.
Furthermore, when the watch is carried and the watch case is a metal case, the sensor temperature will change from an initial value of 22.5°C at an outside temperature of 0°C, as the outside temperature increases, as shown in B in Figure 8. Furthermore, if the watch case is a plastic case, the sensor temperature will rise from the initial value of 25°C at an outside temperature of 0°C, as the outside temperature rises, as shown in Figure 8C. I come to do it. In this way, the temperature coefficient an and the initial value bn differ depending on the material of the watch case. Note that A, B, and C in FIG. 8 coincide with the outside air temperature of 34.5°C.

As a result, in this example, in order to be compatible with three types of watch cases, the temperature coefficients for metal cases, plastic cases, and insert cases were determined.
A storage unit 51 that stores _{a 1} to a ₃ , a storage unit 52 that stores initial values b ₁ to b ₃ , and temperature coefficients a ₁ to a ₃ and initial values b ₁ output from each storage unit 51 and 52 It has gate circuits 53-55, 56-58 into which ~ _b3 is input, and a ternary counter 59 that selectively opens and closes these gates 53-58. In this case, the contents of the ternary counter 59 are incremented by +1 by the signal a and change as "0", "1", "2", "0", etc., and each bit outputs " 0”, “1”, “2”
Among them, the signal "2" opens the gate circuits 53 and 56 to supply the temperature coefficient a ₁ and the initial value b ₁ to the arithmetic circuit 50, and the signal "1" opens the gate circuits 54 and 56.
57 is opened to supply the temperature coefficient a ₂ and the initial value b ₂ , and the signal "0" is a signal that opens the gate circuits 55 and 58 to supply the temperature coefficient a ₃ and the initial value b ₃ to the arithmetic circuit 50, respectively. It is. The calculation result data of the calculation circuit 50 is supplied to the latch 31 and the temperature comparison circuit 28, respectively.

The temperature memory circuit 27 includes a temperature setting counter 6.
0 and 61. This counter 60 is for setting the lower limit temperature of the alarm temperature, and its contents are +
+1 according to the signal d input to the 1 input terminal
At the same time, it is decreased by -1 in accordance with the signal C input to the -1 input terminal. Further, the counter 61 is for setting the upper limit temperature of the alarm temperature, and its contents are incremented by +1 in accordance with the signal f input to the +1 input terminal, and set to the signal e input to the -1 input terminal. is decremented by -1. The outputs of these counters 60 and 61 are sent to the display switching control section 20 via corresponding gate circuits 62 and 63. In this case, the signal g is sent to the gate circuit 62 via the inverter 64.
The signals are directly applied to the gate circuit 63 as gate opening/closing signals to selectively open and close the gate circuits 62 and 63, respectively. Further, the outputs of the counters 60 and 61 are supplied to the temperature comparison circuit 28 via gate circuits 65 and 66. In this case, or gate 2
The output of No. 4 is given to the gate circuits 65 and 66 as a gate opening/closing signal to open and close the gate circuits 65 and 66 at the same time.

The temperature comparison circuit 28 includes a temperature setting counter 6.
It has comparison circuits 67 and 68 corresponding to 0 and 61. The set temperature is input from the counter 60 to the B input terminal of the comparison circuit 67, and the corrected temperature is input from the arithmetic circuit 50 to the A input terminal. Then, the comparison circuit 67 compares the magnitude of both input temperature information, and as a result, when A>B, that is, the corrected temperature becomes larger than the set temperature, an alarm signal is sent out via the OR gate 69. It is configured as follows. In addition, the comparison circuit 68
The set temperature is inputted from the counter 61 to the C input terminal of , and the corrected temperature is inputted from the arithmetic circuit 50 to the A input terminal. Then, the comparison circuit 68 compares the magnitude of both input temperature information, and as a result, when C>A, that is, the corrected temperature becomes smaller than the set temperature, an alarm signal is sent out via the OR gate 69. It is composed of

Next, the operation of the electronic wristwatch configured as described above will be explained. First, for example, when the watch module has been assembled, the switch _S5 is operated depending on the material of the watch case. That is, when the switch _S5 is operated, the one-shot circuit 36 outputs a pulse signal a each time the switch _S5 is operated, and is inputted to the ternary counter 59 of the temperature correction circuit 26. Therefore, the ternary counter 59 is incremented each time the switch _S5 is operated. In this case, if the watch case is a metal case, the contents of the ternary counter 59 are set to "0", if it is a plastic case, it is set to "1", and if it is an insert case, it is set to "2". In this way, when the contents of the ternary counter 59 are set according to the material of the watch case, the corresponding gate circuits 53 to 58 are opened by each bit output of the ternary counter 59. Temperature coefficients a ₁ to a ₃ and initial values b ₁ to b ₃ corresponding to the material of the watch case are input to the calculation circuit 50 . As a result, the arithmetic circuit 50
It becomes possible to perform a predetermined calculation based on the input temperature coefficients and initial values among the temperature coefficients _{a 1} to a ₃ and the initial values b ₁ to b ₃ .

Next, the display states of FIGS. 9A to 9E will be sequentially explained. First, the ternary counter 3 of the switch control section 22
9 is set to "0", that is, the time mode is set, and the flip-flop 37 is
When the output of the decoder 3 is a logical value “1”, the decoder 3
A signal of logical value “1” is output from the lines l ₂ , l ₃ , l ₄ , l ₆ of 8, and the gate circuit 4 of the display switching control section 20
1, 42, 43, and 45 are opened respectively. As a result, the date information output from the gate circuit 41 is sent to the second numerical display 4, the day of the week information output from the gate circuit 42 is sent to the character display 3, and the gate circuit The time information output from the gate circuit 33 is sent to the first numerical display 2, and the corrected temperature information output from the gate circuit 45 is sent to the analog display section 5 and displayed. As a result, the display contents of the display device 1 become as shown in FIG. 9A. In this case, the temperature displayed on the analog display section 5 is changed every minute. In other words, with the 1P/1M signal output from the counting circuit 19,
The temperature sensor 6, the A/D conversion circuit 25, and the temperature correction circuit 26 automatically operate at one-minute intervals, and the temperature detected by the temperature sensor 6 is converted into a digital value by the A/D conversion circuit 25. , in the temperature correction circuit 26
Correction is performed according to the correction formula of Ta=an・T+bn, and this corrected temperature is automatically measured at one-minute intervals on the analog display section 5 via the latch 31 and the display switching control section 20. The temperature is corrected and displayed.

Next, in the watch mode, when switch _S1 is operated once, the output state of the flip-flop 37 is inverted by the pulse signal output from the one-shot circuit 32, and its Q output becomes a logic value "1", and the decoder 38 outputs a logic value "1". Signals of logical value "1" are output from lines l ₁ , l ₃ , l ₄ , l ₆ , and l ₇ . As a result, the pulse signal b output from the one shot circuit 40 causes the temperature sensor 6, the A/D conversion circuit 25,
Since each temperature correction circuit 26 is operated, when the switch _S1 is operated, the temperature at that point in time is measured. In other words, if switch S ₁ is operated while temperature measurement is performed automatically every minute, the temperature at that point is measured, and manual temperature measurement is possible in contrast to automatic temperature measurement. Become. When a signal with a logical value of "1" is output from lines l ₃ , l ₄ , l ₆ , and l ₇ of the decoder 38, the gate circuits 42, 43, 45, and 46 of the display switching control section are opened. Ru. As a result, the temperature measured at the time the switch _S1 was operated is corrected by the temperature correction circuit 26, and this corrected temperature is displayed on the second numerical display 4 as shown in FIG. 9B. Is displayed. In this state, when the switch _S1 is operated one more time, the output state of the flip-flop 37 is inverted and its Q output becomes a logical value "1", so that the display state shown in FIG. 9A is returned to.

Next, in the state shown in Figure 9A, switch S2 is turned to ₁ .
When operated once, the content of the ternary counter 39 is incremented to "1" by the pulse signal output from the one-shot circuit 33, and the temperature measurement mode is set. In this measurement mode, the decoder 38
Logic value “1” signals are output from the lines l ₄ and l ₈ of the gate circuits 43 and 4 of the display switching control section 20.
7 and 48 are opened, and the output signal of line _l8 is applied to the character display body 3. As a result, as shown in FIG. 9C, in addition to the time information being displayed on the first numerical display 2, the uncorrected temperature output from the gate circuit 47 is displayed on the second numerical display 4, Further, the uncorrected temperature output from the gate circuit 48 is displayed on the analog display section 5, and furthermore, "TE-" is displayed on the character display 3, and the second
It is clearly indicated that the display content of the numerical display 4 is the uncorrected temperature.

In this measurement mode, when switch _S2 is further operated once, the ternary counter 39 is incremented to "3" by the pulse signal output from the one-shot circuit 33, and enters the temperature alarm setting mode, and the decoder 38 lines l ₅ , l ₆ , l ₇ output a signal with a logical value of “1”, and the display switching control unit 2
0 gate circuits 44, 45, and 46 are opened.
As a result, the set temperature output from the gate circuit 44 is displayed on the first numerical display 2. In this case, the signal g output from the decoder 38 has a logical value of "0", so in the temperature storage circuit 27, the gate circuit 62 is opened by the signal g inverted by the inverter 64, and the temperature setting counter 60
The contents of are sent out via the gate circuit 62. Therefore, the set temperature displayed on the first numerical display 2 is the lower limit of the alarm temperature. Initially, the content of the temperature storage circuit 27 is "0", so the displayed set temperature is "0". When setting a desired alarm temperature, for example, -5 DEG C., in the temperature storage circuit 60, switch _S4 is operated five times. As a result, the pulse signal outputted from the one shot circuit 35 is outputted as a signal C from the line _l9 of the decoder 38, and the -1 of the temperature setting counter 60 of the temperature storage circuit 27 is outputted.
Input to the input terminal. For this reason, the counter 60
A value is set according to the number of times the switch S ₄ is operated, and this value is displayed on the first numerical display 2.
In this case, in temperature alarm setting mode,
Since the output signal on line _l5 of the decoder 38 is supplied to the first numerical display 2 and the character display 3, as shown in FIG.
"°C" is displayed in the lower digit of , and "TA-" is displayed on the character display 3 to clearly indicate that the display content on the first numerical display 2 is the alarm setting temperature. In addition, as shown in FIG. 9D, "L" is written in the upper digit of the first numerical display 2 by appropriate means.
By displaying , it is possible to clearly indicate that the temperature displayed on the first numerical display 2 is the lower limit temperature of the alarm temperature. In the temperature alarm setting mode, the corrected temperatures output from the gate circuits 45 and 46 are digitally displayed on the second numerical display 4 and are also displayed on the analog display as shown in FIG. 9D. 5 is displayed in analog form.

Next, when setting the upper limit of the alarm temperature in the temperature alarm setting mode, first,
Operate switch S ₁ once to flip-flop 37
inverts the output state of
Then, the lines l ₅ , l ₆ , l ₇ , l ₁₃ of the decoder 38
A signal with a logical value of "1" is output from the gate. Therefore, the gate circuits 44, 45, and 46 are opened, and the signal g output from the line _l13 is input to the temperature storage circuit 27, thereby closing the gate circuit 64. On the other hand, the gate circuit 63 is opened. In this state, if you want to set the upper limit of the alarm temperature to, for example, 25°C, press switch S ₃ .
Operate 25 times. As a result, the pulse signal output from the one-shot circuit 34 is transmitted to the decoder 38.
It is output as a signal f from line _l12 of , and is input to the +1 input terminal of the temperature setting counter 61 of the temperature storage circuit 27. Therefore, a value corresponding to the number of times the switch _S3 is operated is set in the counter 61, and the value set in the counter 61 is displayed on the first numerical display 2, as shown in FIG. 6E. . In addition, as shown in FIG. 9E, by appropriate means,
By displaying "H" in the upper digit of the first numerical display 2, it is possible to clearly indicate that the temperature displayed on the first numerical display 2 is the upper limit temperature of the alarm temperature.

In this state, when the switch _S1 is operated one more time, the output state of the flip-flop 37 is inverted and the output Q becomes a logical value "1", so that the display state shown in FIG. 9D is returned to. Become.

In addition, in the state shown in FIG. 9D, the switch
If _S2 is operated one more time, the contents of the ternary counter 39 become "0", so the state returns to the state shown in FIG. 9A.

Therefore, the counters 60, 6 of the temperature storage circuit 27
The alarm temperature set to 1 is
Each time an output is given, the corresponding gate circuit 6
5 and 66 to comparison circuits 67 and 68. The comparison circuits 67 and 68 perform a comparison operation with the corrected temperature input from the arithmetic circuit 50 every time the output of the OR gate 24 is given. In this case,
The temperature setting counter 60 of the temperature storage circuit 60 is set to an alarm temperature of "-5°C", and the other temperature setting counter 61 is set to an alarm temperature of "25°C".
℃" is set. Therefore, when the corrected temperature reaches the lower limit of the alarm temperature, that is, -5°C, an alarm signal is output from the comparator circuit 67, and when the corrected temperature reaches the upper limit of the alarm temperature, that is, 25°C, the comparison circuit 67 outputs an alarm signal. An alarm signal is output from the circuit 68. As a result, the alarm device 29 generates an alarm sound for a predetermined period of time to notify that the alarm temperature has been reached.

In this case, the alarm sound is made to vary depending on the set alarm temperature. This makes the upper limit,
It can be immediately determined which of the lower limits the temperature corresponds to. For example, by narrowing the temperature difference between two alarm temperatures, when the alarm sounds in the order of the lower limit alarm sound and then the upper limit alarm sound, the temperature is rising, and vice versa, the temperature is falling. I can know. Note that there may be two or more types of alarm temperatures.

Furthermore, in the above embodiment, when the temperature exceeds a predetermined temperature, the alarm sound is generated for a predetermined period of time. The alarm sound may be generated continuously, and the method of generating the alarm sound can be modified in various ways, such as generating the alarm sound for a predetermined period of time when the temperature exceeds a predetermined temperature, or generating the alarm sound when the temperature drops.

Furthermore, although the above embodiment shows the case where it is incorporated into an electronic wristwatch, if it is a portable electronic device,
It is not limited to electronic watches.

Moreover, in the above embodiment, the outside air temperature is measured, but the water temperature may also be measured.

As described above, the present invention includes a temperature detection means,
a conversion means for converting the value detected by the temperature detection means into digital temperature data; a designation means for designating whether or not the device main body is attached to a human body; a first display control means for displaying the temperature data obtained by the conversion means when it is specified that the temperature data is not present;
When the specifying means specifies that the device main body is attached to a human body, the temperature data obtained by the converting means is corrected based on preset correction data for temperature changes due to the body temperature of the human body. a second display control means for displaying the corrected temperature data obtained by the correction means; a second display control means for displaying the corrected temperature data obtained by the correction means;
Temperature data storage means for storing preset temperature data, comparison means for comparing the temperature setting data stored in the temperature data storage means and corrected temperature data obtained by the correction means, and the comparison means Since the device is equipped with a notification means that generates a notification sound when a match is detected by Based on the measurement, it is possible to accurately notify that the outside temperature has reached a predetermined temperature. Further, when the device is not worn on the human body, the temperature data that is not corrected is displayed by the first display control means without being corrected, and when it is worn on the human body, the temperature data that is not corrected is displayed. The corrected temperature data is displayed by the second display control means, so that the correct outside temperature is always displayed regardless of whether the device is worn on the human body or not. Furthermore, since only one temperature detection means is used, the device itself can be made smaller.

[Brief explanation of drawings]

The drawings show an example in which the present invention is applied to an electronic wristwatch, with FIG. 1 showing the front part of the electronic wristwatch, and FIGS. 2 to 4 showing the structure of the temperature sensor mounting part. , Fig. 2 shows the temperature sensor housed in the holding member, Fig. 3 is a bottom view of Fig. 2, and Fig. 4 shows the holding member shown in Fig. 2 incorporated into the watch case. 5 is a diagram showing the circuit configuration of the electronic wristwatch, and FIG. 6 is a diagram showing the switch control section, display switching control section, and display switching control section shown in FIG. 5.
FIG. 7 is a diagram showing details of the display device, FIG. 7 is a diagram showing details of the temperature correction circuit, temperature storage circuit, and temperature comparison circuit shown in FIG. 5, and FIG. 8 is a diagram showing the sensor temperature and outside temperature. The diagrams 9A to 9E showing the relationships are as follows:
FIG. 6 is a diagram showing display states that change depending on the operation switch. 1...Display device, 6...Temperature sensor, 20...
Display switching control section, 21... Switch section, 27...
Temperature memory circuit, 28...Temperature comparison circuit, 29...
Notification device.

Claims (1)

[Claims] 1. A temperature detection means, a conversion means for converting the value detected by the temperature detection means into digital temperature data, a designation means for designating whether or not the main body of the device is attached to a human body, a first display control means for displaying the temperature data obtained by the conversion means when it is specified that the main body is not attached to a human body; and a first display control means for displaying the temperature data obtained by the conversion means when it is specified that the main body is not attached to a human body; When specified, the temperature data obtained by the conversion means is corrected based on preset correction data for temperature changes due to human body temperature to remove the influence of human body temperature. a second display control means for displaying the corrected temperature data obtained by the correction means; a temperature data storage means for storing preset temperature data;
a comparison means for comparing the set temperature data stored in the temperature data storage means and the corrected temperature data obtained by the correction means; and a notification means for generating a notification sound when a match is detected by the comparison means. An electronic temperature measuring device comprising: