Electronic thermometer circuit structure and method for implementing automatic jump function of stabilization time

Abstract

This invention relates to a circuit structure and method for an electronic thermometer that automatically adjusts its stabilization time. The circuit includes a temperature judgment module, a clock divider circuit, a clock signal selector, a temperature range selector, and a trigger. The temperature judgment module outputs a first temperature range to an Nth temperature range. The inputs of the N AND gates of the temperature range selector are connected to the N output ports of the temperature judgment module. The input of the first AND gate connected to the first output port is grounded. The input of the Nth AND gate connected to the Nth output port is also connected to the output of the clock signal selector. The inputs of the remaining AND gates receive arbitrary clock signals output by the clock divider circuit. By employing the electronic thermometer circuit structure and method of this invention to achieve automatic stabilization time adjustment, the stabilization time can be changed according to the temperature measured by the user, thereby increasing measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of electronic thermometers, and more particularly to the field of stabilization time control of electronic thermometers, specifically to a circuit structure and method for an electronic thermometer that realizes automatic stabilization time jump function. Background Technology

[0002] Currently, most electronic thermometers have two pins, STABLE_SEL1 and STABLE_SEL2, that control the stabilization time. By binding these two pins (to power or to ground), the data selector can be controlled to measure the temperature stabilization time. When the displayed temperature remains unchanged within the specified time, the temperature is considered to have stabilized, the measurement ends, and an alarm sounds. Common pin binding methods for stabilization time via clock signal selector are shown in the table below (VDD represents power, GND represents ground):

[0003] STABLE_SEL1 STABLE_SEL2 Stabilization time VDD GND 4s GND VDD 8s GND GND 16s VDD VDD 32s

[0004] The 4s, 8s, 16s, and 32s clock signal lines are obtained by frequency division of the 32K system clock.

[0005] Clock divider circuit and STABLE_SEL1 and STABLE_SEL2 selection control logic, 4-to-1 selector circuit, such as Figure 1 As shown.

[0006] Its working principle is as follows:

[0007] In the 4-to-1 selector circuit, the clock signal selection is controlled by the binding of STABLE_SEL1 and STABLE_SEL2. For example, when STABLE_SEL1 is bound to VDD and STABLE_SEL2 is bound to GND, STN-1 is 0 (low level GND), ST-2 is 0 (low level GND), and after performing NOR and NOT logic operations, the result is 1, and the outputs of other NAND gates are all 0. Therefore, the final output STABLE_TIME signal is the same as the 4s CLK signal. STABLE_TIME is input to flip-flop DFFR1 as the CLK signal. Initially, the output signal Q of flip-flop DFFR1 is low, and STABLE_TIME is 0. When the screen temperature does not change within 4 seconds, STABLE_TIME is pulled high in the 4th second, and the output signal Q of flip-flop DFFR1 flips to a high level. This signal controls the screen display and the buzzer circuit.

[0008] Existing electronic thermometer circuits control the temperature settling time by binding the STABLE_SEL1 and STABLE_SEL2 pins. Once the pins are bound, this method cannot be changed, and the settling time is fixed. When this time is relatively short (4s or 8s), improper user operation can lead to significant measurement errors. For example, if a user turns on the thermometer but does not immediately place it on the measuring area, the thermometer will continuously measure the ambient temperature, displaying "Lo" (for temperatures below 32℃), and will sound an alarm after several seconds. Alternatively, if the thermometer is misplaced during measurement, the temperature rise will be slow, triggering an alarm upon reaching settling time, resulting in a lower measured temperature. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electronic thermometer circuit structure and method that achieves automatic jump function of stable time, which has good stability, high accuracy and wide applicability.

[0010] To achieve the above objectives, the electronic thermometer circuit structure and method for realizing the automatic jump function of the stable time according to the present invention are as follows:

[0011] The main features of this electronic thermometer circuit structure, which implements automatic time-lapse function, are as follows: the circuit structure includes a temperature judgment module, a clock divider circuit, a clock signal selector, a temperature range selector, and a trigger. The temperature judgment module has N output ports, which correspond to the first temperature range to the Nth temperature range according to the temperature from low to high, i.e., the first output port to the Nth output port. The clock divider circuit outputs M clock signals, and the clock signal selector receives the M clock signals from the clock divider circuit, where N≥3 and M≥1.

[0012] The temperature range selector includes a first OR gate and N AND gates, i.e., the first AND gate to the Nth AND gate. The outputs of the N AND gates are all connected to the inputs of the first OR gate. The inputs of the N AND gates are respectively connected to the N output ports of the temperature judgment module. The input of the first AND gate connected to the first output port is also grounded. The input of the Nth AND gate connected to the Nth output port is also connected to the output of the clock signal selector. The inputs of the remaining AND gates also receive any clock signal output by the clock divider circuit. The output of the temperature range selector is connected to the CLK terminal of the flip-flop.

[0013] Preferably, when the temperature judgment module is not measuring the temperature, the first temperature range signal is 1, the temperature range selector selects the ground signal, and the new stable time STABLE TIME-new signal output by the temperature range selector remains 0.

[0014] When the displayed temperature rises in the circuit structure described above, if the nth temperature range signal is 1, the temperature range selector selects the clock signal connected to the input of the nth AND gate. When the temperature remains unchanged within the clock signal period, the trigger flips and the thermometer sounds an alarm. When the temperature stabilization time is less than the clock signal period, the displayed temperature continues to rise. Wherein, 0 < n < N.

[0015] If the Nth temperature range signal is 1, the temperature range selector selects the output signal of the clock signal selector. When the maximum stabilization time is reached, the thermometer will sound an alarm.

[0016] Preferably, the circuit structure has a first pin and a second pin. The output of the first pin is connected to two NOT gates in sequence, respectively outputting two output signals. The output of the second pin is also connected to two NOT gates in sequence, respectively outputting two output signals. The first pin and the second pin are respectively bound to a power supply or to ground. The clock signal selector is controlled by the first pin and the second pin, thereby controlling the temperature stabilization time.

[0017] More preferably, the clock signal selector includes a clock selection AND gate, a first clock AND gate to an Mth clock AND gate, and several NOR gates. The output of the clock selection AND gate is connected to a temperature range selector. The inputs of the first clock AND gate to the Mth clock AND gate respectively receive M clock signals output by the clock divider circuit. The inputs of the first clock AND gate to the Mth clock AND gate also respectively receive the signal after NORing the output signal of the first pin and the output signal of the second pin. The outputs of adjacent clock AND gates are connected to the input of the same NOR gate. The outputs of all NOR gates are connected to the input of the clock selection AND gate.

[0018] Preferably, the clock divider circuit includes multiple T flip-flops connected in sequence. Each T flip-flop outputs M clock signals. The first T flip-flop receives a 32kHz oscillation signal as its clock signal, and the clock signal for each of the remaining T flip-flops is the clock signal of the preceding T flip-flop. The output signal is the carry signal CLR for each T flip-flop.

[0019] Preferably, in the circuit structure, each digit of the displayed temperature is controlled by a binary code, and the temperature judgment module determines the value of the digit by judging the four-bit binary code. The first output port of the temperature judgment module is connected to the display Lo indicator line.

[0020] The method for automatic time-lapse processing based on the circuit structure of an electronic thermometer is characterized by the following steps:

[0021] It acquires the user's body temperature information in real time and starts timing;

[0022] Compare the latest acquired body temperature information for two adjacent times. If the body temperature information is the same, record the body temperature information; otherwise, reset the timing.

[0023] Determine the temperature range in which the body temperature information is located. If the body temperature information is within the first temperature range, perform the step of comparing the latest acquired body temperature information for two adjacent times; otherwise, when the timing duration reaches the predetermined time, give a buzzer alarm.

[0024] Preferably, if the body temperature information is not within the first temperature range, the step of giving a buzzer alarm when the timing duration reaches the predetermined time includes:

[0025] If the body temperature information is within the Nth temperature range, give a buzzer alarm when the timing duration reaches the temperature measurement stabilization time, where N≥3;

[0026] If the body temperature information is within the nth temperature range, give a buzzer alarm when the timing duration reaches the maximum stabilization time, where 1 < n < N, and the maximum stabilization time is greater than the temperature measurement stabilization time.

[0027] By adopting the electronic thermometer circuit structure and method for realizing the automatic jump function of the stabilization time of the present invention, the stabilization time can be changed according to the temperature measured by the user, the measurement accuracy can be increased, and the problem of low measurement results caused by improper use of the user and other reasons can be greatly reduced. Brief Description of the Drawings

[0028] Figure 1 Schematic diagram of the clock signal selector circuit for the prior art.

[0029] Figure 2 Schematic diagram of the electronic thermometer circuit structure for realizing the automatic jump function of the stabilization time of the present invention.

[0030] Figure 3 Schematic diagram of the clock frequency division circuit of the electronic thermometer circuit structure for realizing the automatic jump function of the stabilization time of the present invention.

[0031] Figure 4 Schematic diagram of the circuit of the temperature range selector of the electronic thermometer circuit structure for realizing the automatic jump function of the stabilization time of the present invention.

[0032] Figure 5 Schematic diagram of the temperature judgment module of the electronic thermometer circuit structure for realizing the automatic jump function of the stabilization time of the present invention.

[0033] Figure 6 Schematic diagram of the circuit of the clock signal selector of the embodiment of the electronic thermometer circuit structure for realizing the automatic jump function of the stabilization time of the present invention.

[0034] Figure 7 The timing diagram of each signal during the measurement process of the electronic thermometer circuit structure that realizes the automatic jump function of the stable time in this invention is shown.

[0035] Figure 8 This is a flowchart of the method for implementing automatic jump processing of stable time according to the present invention. Detailed Implementation

[0036] To more clearly describe the technical content of the present invention, the following description is provided in conjunction with specific embodiments.

[0037] Current electronic thermometers stabilize when the displayed temperature remains unchanged for a specified time, at which point the measurement is complete and an alarm sounds. The stabilization time can be selected via pin bonding settings, with common options being 4s, 8s, 16s, and 32s. Many manufacturers opt for shorter stabilization times to achieve rapid temperature measurement. However, while this reduces measurement time, improper user operation can lead to significant measurement errors.

[0038] The electronic thermometer circuit structure and method of the present invention, which realizes the function of automatic switching of stabilization time, can solve the problems of the prior art. Before the thermometer needs to beep after the measurement is completed, it will determine whether the current stabilization temperature is too low. If the temperature is too low, it will automatically switch to a stabilization time and select a relatively long stabilization time.

[0039] In existing clock signal selectors, the output STABLE TIME signal is directly input to the CLK port of the flip-flop DFFR1. However, the clock signal selector circuit of this invention processes the STABLE TIME signal based on the existing structure, such as... Figure 2 As shown. This invention adds a temperature range selector after the clock signal selector, which selects the settling time based on the real-time measured temperature, and has a flexible settling time jump function.

[0040] like Figure 2 As shown, the electronic thermometer circuit structure of the present invention, which realizes the automatic jump function of stable time, includes a clock signal selector, a temperature range selector, a trigger, a temperature judgment module, and a clock frequency divider circuit. The temperature judgment module has N output ports, which correspond to the first temperature range to the Nth temperature range according to the temperature from low to high, i.e., the first output port to the Nth output port. The clock frequency divider circuit outputs M clock signals, and the clock signal selector receives M clock signals from the clock frequency divider circuit, where N≥3 and M≥1.

[0041] like Figure 4As shown, the temperature range selector includes a first OR gate and N AND gates, i.e., the first AND gate to the Nth AND gate. The outputs of the N AND gates are all connected to the inputs of the first OR gate. The inputs of the N AND gates are respectively connected to the N output ports of the temperature judgment module. The input of the first AND gate connected to the first output port is also grounded. The input of the Nth AND gate connected to the Nth output port is also connected to the output of the clock signal selector. The inputs of the remaining AND gates also receive any clock signal output by the clock divider circuit. The output of the temperature range selector is connected to the CLK terminal of the flip-flop. The clock signal selector outputs a stable time (STABLE TIME) signal, and the temperature range selector outputs a new stable time (STABLE TIME-new) signal.

[0042] In a preferred embodiment of the present invention, when no temperature is measured, the temperature judgment module sets the first temperature range signal to 1, the temperature range selector selects the ground signal, and the output new stable time STABLE TIME-new signal remains at 0.

[0043] When the displayed temperature rises in the circuit structure described above, if the nth temperature range signal is 1, the temperature range selector selects the clock signal connected to the input of the nth AND gate. When the temperature remains unchanged within the clock signal period, the trigger flips and the thermometer sounds an alarm. When the temperature stabilization time is less than the clock signal period, the displayed temperature continues to rise. Wherein, 0 < n < N.

[0044] If the Nth temperature range signal is 1, the temperature range selector selects the output signal of the clock signal selector. When the maximum stabilization time is reached, the thermometer will sound an alarm.

[0045] In a preferred embodiment of the present invention, the first output port of the temperature judgment module is connected to the display Lo indicator line.

[0046] This invention adds a temperature range selector before the trigger. A simplified description of the operation: When the user takes out the thermometer and turns it on, before placing it on the measuring area, the thermometer screen displays Lo (T < 32℃ / 90℉) in real time. At this time, the signal for T < 32℃ / 90℉ (displayed as Lo) is 1, while the signals for 36℃ / 96.8℉ > T ≥ 32℃ / 90℉ and T ≥ 36℃ / 96.8℉ are 0. The temperature range selector selects the GND signal. Even if the temperature remains constant and the settling time is reached, the STABLE TIME-new signal remains 0, the CLK terminal of the trigger has no rising edge, and the output remains unchanged. As the temperature continues to rise, the trigger in the clock divider circuit resets for every 0.1℃ / ℉ increase, and the time counting restarts. When the temperature rises to a value between 36℃ / 96.8℉ and T ≥ 32℃ / 90℉, if the temperature remains constant and the maximum settling time is reached (e.g., 8 seconds for settling), the STABLE TIME signal will toggle. However, since the signal for 36℃ / 96.8℉ > T≥32℃ / 90℉ is 1, the STABLETIME-new signal selects a 32s clock, so the trigger will not flip after 8 seconds of temperature stabilization. The trigger will only flip and the thermometer will sound an alarm when the temperature remains constant for 32 seconds. If the 32-second stabilization period is not met and the temperature continues to rise, when T≥36℃ / 96.8℉, the STABLE TIME-new signal selects the original STABLE TIME signal, reaching the maximum stabilization time, and the thermometer will sound an alarm, completing the measurement process. Through this method, the electronic thermometer achieves an automatic stabilization time jump function. The timing diagram of each signal during the measurement process is shown below. Figure 7 As shown (assuming the binding is stable for 8 seconds).

[0047] like Figure 5 As shown, in a preferred embodiment of the present invention, the first output port of the temperature judgment module is connected to the display Lo indicator line, the second output port of the temperature judgment module judges the tens digit, units digit, and 0.1 digit of the displayed temperature, respectively, and the third output port of the temperature judgment module judges the hundreds digit, tens digit, units digit, and 0.1 digit of the displayed temperature, respectively. The tens digit, units digit, and 0.1 digit of the displayed temperature are controlled by a four-bit binary code, and the temperature judgment module judges the value of the digit by judging the four-bit binary code.

[0048] Compared to existing circuit structures, this invention adds a temperature judgment module. Through logic control, it generates three temperature signal indicator lines: T < 32℃ / 90℉ (displayed as Lo on screen), 36℃ / 96.8℉ > T ≥ 32℃ / 90℉, and T ≥ 36℃ / 96.8℉. These three temperature signal indicator lines are controlled by the temperature displayed on the screen. The electronic thermometer screen updates its temperature display every 1 second. After acquiring the user's body temperature information in real time, the electronic thermometer compares two consecutive most recently acquired temperature readings. If the temperature readings are the same, the information is recorded and displayed on the screen. Preferably, before recording the temperature information, the electronic thermometer compares the new temperature reading with a previously recorded temperature reading. If the new temperature reading is greater than the previously recorded temperature reading, it is displayed on the screen. Specifically, the three temperature segment signals output by the electronic thermometer's temperature judgment module can be adjusted according to actual conditions. Normal human body temperature will definitely exceed 36℃. If the measured temperature is below 36℃ and has reached a stable time, it is determined that there is an error in the measurement, and the measurement time needs to be extended to obtain a more accurate measurement result.

[0049] The thermometer displays temperatures up to 43°C, with "Lo" indicating temperatures below 32°C. The tens, units, and 0.1 digits on the screen are each controlled by a four-bit binary code. The Fahrenheit display displays temperatures up to 110°F, with "Lo" indicating temperatures below 90°F. The hundreds, tens, units, and 0.1 digits on the screen, except for the hundreds digit, are also controlled by a four-bit binary code.

[0050] In a preferred embodiment of the present invention, the circuit structure has a first pin and a second pin. The output terminal of the first pin is connected to two NOT gates in sequence, and outputs two output signals respectively. The output terminal of the second pin is connected to two NOT gates in sequence, and outputs two output signals respectively. The first pin and the second pin are respectively bound to the power supply or bound to the ground. The clock signal selector is controlled by the first pin and the second pin, thereby controlling the temperature measurement stabilization time.

[0051] In a preferred embodiment of the present invention, the clock signal selector includes a clock selection AND gate, a first clock AND gate to an Mth clock AND gate, and several NOR gates. The output of the clock selection AND gate is connected to a temperature range selector. The inputs of the first clock AND gate to the Mth clock AND gate respectively receive M clock signals output by the clock divider circuit. The inputs of the first clock AND gate to the Mth clock AND gate also respectively receive the signal after NORing the output signal of the first pin and the output signal of the second pin. The outputs of adjacent clock AND gates are connected to the input of the same NOR gate. The outputs of all NOR gates are connected to the input of the clock selection AND gate.

[0052] like Figure 3 As shown, in a preferred embodiment of the present invention, the clock divider circuit includes multiple T flip-flops connected in sequence. Each T flip-flop outputs M clock signals. The first T flip-flop receives a 32kHz oscillation signal as its clock signal, and the clock signal for each of the remaining T flip-flops is the clock signal of the preceding T flip-flop. The output signal is a carry signal CLR for each T flip-flop, which is used to reset the timing.

[0053] In a preferred embodiment of the present invention, the digits of the displayed temperature in the circuit structure are controlled by binary codes, and the temperature judgment module determines the value of the digit by judging the four-bit binary code. The first output port of the temperature judgment module is connected to the display Lo indicator line.

[0054] In embodiments of the present invention, the clock signal selector can receive multiple combinations of clock signals. The circuit structure allows selection of the stabilization time through the bonding of a first pin and a second pin connected to the clock signal selector. Different clock signals can achieve a stabilization time of 32 seconds or longer (e.g., 64 seconds). However, while a longer stabilization time results in a more stable measurement, it also leads to a longer body temperature measurement time, failing to meet the requirements of rapid temperature measurement in electronic thermometers. Figure 6 As shown in the embodiment of the circuit structure of the present invention, the clock signal selector receives clock signals of 8s, 16s, 32s, and 64s respectively. When both the first pin and the second pin are bound to the power supply VDD, the thermometer will select the 64s stable mode, but the entire measurement time will be very long at this time.

[0055] Figure 8 This is a flowchart of the method for implementing automatic time jump processing according to the present invention. The method includes the following steps S101 to S103:

[0056] In step S101, the user's body temperature information is acquired in real time and a timer is started.

[0057] In step S102, the two most recently acquired body temperature information are compared. If the body temperature information is the same, the body temperature information is recorded; otherwise, the timer is reset.

[0058] In step S103, the temperature range of the body temperature information is determined. If the body temperature information is within the first temperature range, the step of comparing the two most recently acquired body temperature information is performed; otherwise, when the timer reaches the predetermined time, a buzzer alarm is sounded.

[0059] In a preferred embodiment of the present invention, the thermometer has N temperature ranges. If the body temperature information is not within the first temperature range, a buzzer alarm is triggered when the timing duration reaches a predetermined time, including:

[0060] In step S1031, if the body temperature information is within the Nth temperature range, when the timing duration reaches the temperature measurement stabilization time, a beeping alarm is given, where N≥3.

[0061] In step S1032, if the body temperature information is within the nth temperature range, when the timing duration reaches the maximum stabilization time, a beeping alarm is given, where 1 < n < N, and the maximum stabilization time is greater than the temperature measurement stabilization time.

[0062] Specifically, both the maximum stabilization time and the temperature measurement stabilization time are preset values. The temperature sub-range is determined by the type of clock signal selector. For example, when the clock signal selector is a four-way selector, M is 4; when the clock signal selector is an eight-way selector, M is 8.

[0063] As Figure 3 shown, taking the clock signal selector as a four-way selector as an example. In the clock frequency division circuit, the 32KHz oscillation signal is used as the CLK signal and input into the first-stage T flip-flop. After 18 divisions, a 4s clock signal (T = 8s) is obtained; after 19 divisions, an 8s clock signal (T = 16s) is obtained; after 20 divisions, a 16s clock signal (T = 32s) is obtained; after 21 divisions, a 32s clock signal (T = 64s) is obtained. The reset signal of the frequency division T flip-flop uniformly uses the carry signal CLR. When the screen temperature display changes, CLR generates a low-level reset signal to reset all T flip-flops. After reset, the Q terminal of the T flip-flop is 0. Only when the screen display temperature does not change within more than 4s, the rising edge of the clock signal will be transmitted to the 18th flip-flop, and the 4s clock signal is valid. When the screen display temperature does not change within more than 8s, the rising edge of the clock signal will be transmitted to the 19th flip-flop, and the 4s and 8s clock signals are valid. Similarly, when the screen display temperature does not change within more than 16s, the 4s, 8s, and 16s clock signals are valid; when the screen display temperature does not change within more than 32s, the 4s, 8s, 16s, and 32s clock signals are valid.

[0064] The electronic thermometer circuit structure and method for realizing the automatic jump function of the stabilization time according to the present invention can change the stabilization time according to the temperature measured by the user, increase the measurement accuracy, and greatly reduce the problem of low measurement results caused by improper use by the user or other reasons.

[0065] In this specification, the present invention has been described with reference to its specific embodiments. However, it is obvious that various modifications and transformations can still be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A circuit structure for an electronic thermometer that automatically jumps to a stable time setting, characterized in that, The circuit structure includes a temperature judgment module, a clock divider circuit, a clock signal selector, a temperature range selector, and a trigger. The temperature judgment module has N output ports, which correspond to the first temperature range to the Nth temperature range according to the temperature from low to high, i.e., the first output port to the Nth output port. The clock divider circuit outputs M clock signals, and the clock signal selector receives the M clock signals from the clock divider circuit, where N≥3 and M≥1. The temperature range selector includes a first OR gate and N AND gates, i.e., the first AND gate to the Nth AND gate. The outputs of the N AND gates are all connected to the inputs of the first OR gate. The inputs of the N AND gates are respectively connected to the N output ports of the temperature judgment module. The input of the first AND gate connected to the first output port is also grounded. The input of the Nth AND gate connected to the Nth output port is also connected to the output of the clock signal selector. The inputs of the remaining AND gates also receive any clock signal output by the clock divider circuit. The output of the temperature range selector is connected to the CLK terminal of the flip-flop. When no temperature is measured, the temperature judgment module sets the first temperature range signal to 1, the temperature range selector selects the ground signal, and the new stable time (STABLE TIME-new) signal output by the temperature range selector remains at 0. When the displayed temperature rises in the circuit structure described above, if the nth temperature range signal is 1, the temperature range selector selects the clock signal connected to the input of the nth AND gate. When the temperature remains unchanged within the clock signal period, the trigger flips and the electronic thermometer sounds an alarm. When the temperature stabilization time is less than the clock signal period, the displayed temperature continues to rise. Wherein, 0 < n < N. If the Nth temperature range signal is 1, the temperature range selector selects the output signal of the clock signal selector. When the maximum stabilization time is reached, the electronic thermometer will sound an alarm.

2. The electronic thermometer circuit structure for achieving automatic time jump function as described in claim 1, characterized in that, The circuit structure has a first pin and a second pin. The output of the first pin is connected to two NOT gates in sequence, which output two signals respectively. The output of the second pin is also connected to two NOT gates in sequence, which output two signals respectively. The first pin and the second pin are respectively bound to the power supply or to ground. The clock signal selector is controlled by the first pin and the second pin, which in turn controls the temperature stabilization time.

3. The electronic thermometer circuit structure for achieving automatic time jump function according to claim 2, characterized in that, The clock signal selector includes a clock selection AND gate, a first clock AND gate to an Mth clock AND gate, and several NOR gates. The output of the clock selection AND gate is connected to a temperature range selector. The inputs of the first clock AND gate to the Mth clock AND gate respectively receive M clock signals output by the clock divider circuit. The inputs of the first clock AND gate to the Mth clock AND gate also respectively receive the signal after NORing the output signal of the first pin and the output signal of the second pin. The outputs of adjacent clock AND gates are connected to the input of the same NOR gate. The outputs of all NOR gates are connected to the input of the clock selection AND gate.

4. The electronic thermometer circuit structure for achieving automatic time jump function as described in claim 1, characterized in that, The clock divider circuit includes multiple T flip-flops connected in sequence. Each T flip-flop outputs M clock signals. The first T flip-flop receives a 32kHz oscillation signal as its clock signal, and the clock signal for each of the remaining T flip-flops is the clock signal of the preceding T flip-flop. The output signal is the carry signal CLR for each T flip-flop.

5. The electronic thermometer circuit structure for achieving automatic time jump function as described in claim 1, characterized in that, The digits of the screen display temperature of the described circuit structure are respectively controlled by binary codes. The temperature judgment module judges the value of the digit by judging a four-bit binary code. The first output port of the temperature judgment module is connected to the display Lo indication line.

6. A method for automatically switching between stable times based on the electronic thermometer circuit structure described in claim 1, characterized in that, The described method includes the following steps: Obtain the body temperature information of the user in real time and start timing; Compare the latest obtained body temperature information for two adjacent times. If the body temperature information is the same, record the body temperature information; otherwise, reset the timing; Determine the temperature range in which the body temperature information is located. If the body temperature information is in the first temperature range, execute the step of comparing the latest obtained body temperature information for two adjacent times; otherwise, when the timing duration reaches the predetermined time, give a beeping alarm.

7. The method for implementing automatic time jump processing according to claim 6, characterized in that, If the body temperature information is not in the first temperature range, the beeping alarm when the timing duration reaches the predetermined time includes: If the body temperature information is in the Nth temperature range, give a beeping alarm when the timing duration reaches the temperature measurement stable time, where N≥3; If the body temperature information is in the nth temperature range, give a beeping alarm when the timing duration reaches the maximum stable time, where 1 < n < N, and the maximum stable time is greater than the temperature measurement stable time.

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