TW201824202A - Alarm triggering method for sensor and electronic device using the same - Google Patents

Abstract

An alarm triggering method for a sensor and an electronic device using the same are proposed. The method is applicable to an electronic device and includes the following steps. A sensor signal is received from the sensor. Whether a signal magnitude of the sensor signal satisfies a first triggering condition is determined, where the first triggering condition is associated with a first determination threshold. In response to the signal magnitude satisfying the first triggering condition, whether the signal magnitude satisfies a second triggering condition or a third triggering condition is further determined, where the second triggering condition is associated with a second determination threshold, the second determining threshold is greater than the first determination threshold, and the third triggering condition is associated with a time determination threshold. When the signal magnitude satisfies the second triggering condition or the third triggering condition, the sensor is determined to be in an alarm state so as to output an alarm signal.

Description

Alarm triggering method for sensor and electronic device using same

The invention relates to an alarm triggering method and an electronic device using the same, and more particularly to an alarm triggering method for a sensor and an electronic device using the same.

Infrared motion sensor (also known as "body infrared sensor") is a passive infrared sensor that absorbs infrared radiation signals from foreign objects and passes through the Fresnel Lens on the surface of the sensor. This produces analog signals with positive and negative oscillations. It is common practice to sample such a comparison signal to convert the infrared radiation signal into an infrared radiation value, and compare the infrared radiation value with a preset threshold value to determine whether any object is approaching.

However, the infrared radiation values emitted by humans, animals, and other objects are different, and the infrared radiation values received by the sensor under different environments will also change. Therefore, the fixed threshold value and the single judgment method used in the conventional practice easily lead to false alarms triggered by different foreign objects and infrared radiation values in different environments.

In view of this, the present invention provides an alarm triggering method for a sensor and an electronic device using the same. The method uses multiple thresholds to determine whether the signal value of the sensor reaches the alarm triggering condition, so as to reduce the false triggering of the alarm. Chance.

In an embodiment of the present invention, the above-mentioned alarm triggering method for a sensor is suitable for an electronic device and includes the following steps. The self-sensor receives the sensor signal and determines whether the signal value of the sensor signal meets a first trigger condition, wherein the first trigger condition is associated with a first determination threshold. When the signal value meets the first trigger condition, it is determined whether the signal value meets the second trigger condition or the third trigger condition, wherein the second trigger condition is associated with the second decision threshold, and the second decision threshold is higher than the first decision threshold. Value, the third trigger condition is associated with a time decision threshold. When the signal value meets the second trigger condition or the third trigger condition, it is determined that the sensor is in an alarm state to output an alarm signal.

In an embodiment of the present invention, the electronic device includes an analog-to-digital converter, a memory, and a processor. The processor is coupled to the analog-to-digital converter and the memory. The analog-to-digital converter is used to receive the sensor signal from the sensor to convert the sensor signal into a signal value. The processor is used to determine whether the signal value of the sensor signal meets the first trigger condition. When the signal value meets the first trigger condition, it will determine whether the signal value meets the second trigger condition or the third trigger condition, and when the signal value meets When the second trigger condition or the third trigger condition, the determination sensor is in an alarm state to output an alarm signal, wherein the second trigger condition is associated with a second determination threshold, and the second determination threshold is higher than the first determination threshold. Value, the third trigger condition is associated with a time decision threshold.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

Some embodiments of the present invention will be described in detail with reference to the accompanying drawings. The component symbols cited in the following description will be regarded as the same or similar components when the same component symbols appear in different drawings. These examples are only a part of the present invention and do not disclose all the possible embodiments of the present invention. Rather, these embodiments are merely examples of the methods and electronic devices within the scope of the patent application of the present invention.

FIG. 1 is a schematic block diagram of an electronic device according to an embodiment of the present invention, but this is only for convenience of description, and is not intended to limit the present invention. First, FIG. 1 first introduces all components and configuration relationships in the electronic device. Detailed functions will be disclosed together with FIG. 2.

Referring to FIG. 1, the electronic device 100 in this embodiment includes a sensor SR, an analog-to-digital converter 110, a memory 120, and a processor 130. The processor 130 is coupled to the analog-to-digital converter 110 and the memory 120. However, in other embodiments, the electronic device 100 may be a computer system or a device with signal and data processing capabilities, which is externally connected to the sensor SR. However, in other embodiments, the electronic device 100 may be integrated with the sensor SR into a single device. The sensor SR herein may be, for example, a light source sensor, a sound sensor, an infrared sensor, a temperature sensor, a humidity sensor, an air pressure sensor, a gas sensor, an ultraviolet sensor, and the like. Device for sensing environmental information.

The analog-to-digital converter 110 is configured to convert a continuous signal in an analog form received from the sensor SR into a discrete signal in a digital form.

The memory 120 is used to store data, code, and other data, and may be, for example, any type of fixed or removable random access memory (RAM), read-only memory (ROM) ), Flash memory (flash memory), hard disk or other similar devices, integrated circuits and combinations thereof.

The processor 130 may be, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessor (microprocessor), microcontroller (microcontroller, MCU), and programmable logic Device (programmable logic device (PLD)), digital signal processor (DSP), field-programmable gate array (FPGA), application specific integrated circuits (ASIC) And other similar devices or circuits, which are used to control the overall operation of the electronic device 100.

The embodiments are described below with reference to the components of the electronic device 100 in FIG. 1 to describe the detailed steps of the electronic device 100 executing the alarm trigger method for the sensor SR.

FIG. 2 is a flowchart of an alarm triggering method according to an embodiment of the present invention. In this embodiment, the generation of false alarm triggers is mainly reduced through two different detection thresholds and a time-determined threshold. All the thresholds have been stored in the memory 120 in advance.

Please refer to FIG. 1 and FIG. 2 at the same time. First, the analog-to-digital converter 110 of the electronic device 100 receives the sensor signal from the sensor SR (step S202), and converts the sensor signal into a digital signal value. Next, the processor 130 determines whether the signal value of the sensor signal meets a first trigger condition associated with a first determination threshold (step S204). The first trigger condition here is that the signal value of the sensing signal exceeds the first determination threshold. When the processor 130 determines that the signal value does not meet the first trigger condition (that is, the signal value is lower than the first decision threshold), it means that the sensor SR is in a stable state (step S206), that is, the sensor that has not yet reached the triggering alarm. condition.

On the other hand, when the processor 130 determines that the signal value meets the first trigger condition (that is, the signal value exceeds the first determination threshold), the processor 130 will further determine whether the signal value of the sensing signal meets the correlation with The second triggering condition of the second determination threshold or the third triggering condition related to the time determination threshold (step S208), wherein the second determination threshold is higher than the first determination threshold.

In detail, in order to prevent the sensor SR from fluctuating due to internal factors or slight external factors so that it exceeds the first determination threshold, a second trigger condition may be added here to adjust the trigger sensitivity. , To avoid the occurrence of false alarms, and the second triggering condition described above is that the signal value of the sensing signal exceeds the second determination threshold. When the processor 130 determines that the signal value meets the second trigger condition (that is, the signal value of the sensing signal exceeds the second decision threshold), it is confirmed that the sensor SR is in an alarm state (step S212), that is, the trigger alarm is reached. conditions of.

It must be noted that when the processor 130 determines that the signal value does not meet the second trigger condition (that is, the signal value of the sensing signal is between the first decision threshold and the second decision threshold), it will go further The third trigger condition is used as an auxiliary condition to determine whether the condition is a false alarm. The above-mentioned third trigger condition is that the continuous value of the signal value of the sensing signal exceeds the first determination threshold exceeds the time determination threshold. When the processor 130 determines that the signal value meets the third triggering condition (that is, the continuous value of the signal value of the sensing signal exceeds the first determination threshold value exceeds the time determination threshold value), it means that the sensor SR is in an alarm state (step S212), that is, the condition for triggering the alarm is reached.

Inferentially, when the processor 130 determines that the signal value does not meet any of the second trigger condition and the third trigger condition (that is, the continuous time of the signal value of the sensing signal exceeds the first determination threshold value does not exceed the time determination valve Value), that is, the signal value fluctuates so slightly that it briefly exceeds the first decision threshold and then falls back to a state below the first decision threshold, which indicates that the sensor SR is in a misjudgment state (step S210), that is, The conditions that triggered the alert were not met.

In this embodiment, when the processor 130 determines that the sensor SR is in an alarm state, it will output an alarm signal. The processor 130 may be connected to an output device (not shown) such as a speaker, a screen, and an indicator, so as to emit an alarm signal such as sound, voice, text, graphics, or light during an alarm state. The electronic device 100 can be connected to another device wirelessly or by wire, and the alarm signal can be transmitted to another device as a trigger signal for the operation of the other device.

In order to make the process of FIG. 2 more convenient and clear, a passive infrared sensor is used as the sensor SR as an embodiment for description below.

FIG. 3 is a schematic diagram of a conventional alarm triggering method. 4A-4B are schematic diagrams illustrating an alarm triggering method for a sensor according to an embodiment of the present invention. The sensor in this embodiment is a passive infrared sensor.

Please refer to FIG. 3 first. Taking the passive infrared sensor PIR as an example, in the same detection range R, it will detect different infrared radiation values because the sensing object is a child PC or an adult PA, and Different signal amplitudes Ac and signal amplitudes AA are generated in the same time. Therefore, if the threshold TH (including TH + and TH-) is fixed in a single group, the trigger conditions will be less flexible.

Please refer to FIG. 4A again. Under the same detection environment as FIG. 3, it is assumed that the threshold value used by the electronic device 100 to determine the trigger condition is the first set of thresholds TH1 (including TH1 + and TH1-) and the second set of thresholds TH2 (Including TH2 + and TH2-). The first set of thresholds TH1 is used as a judgment value for steady state transition, and the second set of thresholds TH2 is used to adjust the trigger sensitivity. Therefore, the second set of thresholds TH2 can be based on the object to be detected And adjusted.

The signal value of the sensor SR may fall into three different intervals. The first is that the signal value does not exceed the first set of thresholds, that is, the signal amplitude falls within a stable state between TH1 + and TH1-, such as the signal amplitude A1. The second is that the signal value exceeds the second set of thresholds, that is, the alarm state where the signal amplitude falls between TH2 + and ∞ or -∞ and TH2-, such as the signal amplitude A2. The third type is that the signal value exceeds the first group threshold but does not exceed the second group threshold, that is, the signal amplitude falls between TH1 + and TH2 + or TH2- and TH1-, such as the signal amplitude A3. When the signal value of the sensor SR falls into the third interval, an additional detection delay time needs to be set as a buffer to avoid false alarms.

In detail, please refer to FIG. 4B. The signal amplitude B1 exceeds the first threshold TH1 + (not exceeding TH2 +) after time t1, but falls back within the first threshold TH1 + before the detection delay time TD. The sensor SR is in a misjudgment state. On the other hand, the signal amplitude B2 exceeds the first set of thresholds TH1- (not exceeding TH2-) at time t1 and the continuous time exceeds the detection delay time TD, so it means that the sensor SR is in an alarm state. In addition, after the first shock, the processor 130 will set a time length (hereinafter referred to as the "blind time TB") to turn off the detection shock to avoid repeated detection of triggering. Therefore, after the signal amplitude B1 and the signal amplitude B2 oscillate for the first time and the blind time TB elapses, it is determined that the sensor SR returns to a stable state.

In order to explain the foregoing method more completely, FIG. 5 is a calculation flowchart of an alarm triggering method according to an embodiment of the present invention.

Referring to FIG. 1 and FIG. 5 at the same time, when the electronic device 100 starts to enter the alarm triggering method flow of the sensor SR, the processor 130 starts a timer (step S502). The processor 130 presets the state of the sensor SR to a stable state before obtaining the signal value (step S504). The processor 130 obtains the signal value a at time t (step S506), and the time t here is the current time point of the timer. Next, the processor 130 first determines whether the interval in which the signal value a falls meets a> TH1 + or a <TH1- using the first set of thresholds TH1 (step S508). If not, it means that the signal value a is lower than The first set of determination thresholds TH1, that is, the sensor SR is in a stable state, that is, the flow returns to step S504, and the processor 130 will continuously determine the interval in which the signal value obtained at the next time point falls.

When the determination in step S508 is YES, the processor 130 further determines the state of the sensor SR based on the signal value a 'within the detection delay time TD. Here, the processor 130 uses the second set of determination thresholds TH2 to determine whether the interval in which the signal value a 'falls falls within a'> TH2 + or a '<TH2- (step S512).

When the determination of step S512 is YES, the processor 130 determines that the sensor SR is in an alarm state (step S516). Next, the blind time TB will be entered, and the processor 130 will determine whether the blind time TB is over (step S518, that is, whether the time point has reached t + TD + TB). If the blind time TB has not ended, the processor 130 will continue to determine the sensor SR as an alarm state (return to step S516), and until the blind time TB ends, the processor 130 will transfer the sensor SR to a preset The steady state (returns to step S504) to re-judgment the state.

On the other hand, when the determination of step S512 is no, the processor 130 will further detect whether the interval in which the signal value a 'within the delay time TD falls still meets a'> TH1 + or a '<TH1- (Step S514). If yes, the processor 130 determines that the sensor SR is in an alarm state (step S516). If not, the processor 130 determines that the sensor SR is in a false judgment state (step S520). Next, it will also enter the blind time TB, and the processor 130 will determine whether the blind time TB is over (step S522, that is, whether the time point has reached t + TD + TB). If the blind time TB has not ended, the processor 130 will continue to determine the sensor SR as a misjudgment state (return to step S520), and until the blind time TB ends, the processor 130 will transfer the sensor SR to a preset The steady state (returns to step S504) to re-judgment the state.

In this embodiment, when the processor 130 determines that the sensor SR is in an alarm state, it will output an alarm signal. Taking the sensor SR as a passive infrared sensor for detecting human body as an example, the processor 130 may be connected to, for example, a speaker, so that when the alarm signal is output, the speaker emits an alarm bell for monitoring anti-theft purposes. Alternatively, the processor 130 may be connected to the light source, so that the light source may be turned on when an alarm signal is output to achieve automatic control.

In terms of the sensor SR, FIG. 6 is a state transition diagram of the sensor according to an embodiment of the present invention.

Referring to FIG. 6, the processor 130 will obtain the signal value S of the sensor SR, the first determination threshold value TH1, the second determination threshold value TH2, the current time point Time_C, the end time point of the detection delay time Time_D, and the blind time. At the end point, Time_B, and the sensor SR will be preset to the stable state S0 (state transition direction T0).

In this embodiment, when the processor 130 determines that the signal value S is between the first determination threshold TH1 and the second determination threshold TH2 and has not reached the end of the detection delay time before Time_D (that is, a logical expression "TH1 <S <TH2 && Time_C <Time_D"), the sensor SR will temporarily transition to the misjudgment state S1 (state transition direction T01). During this period, when the signal value S returns below the first determination threshold TH1 (that is, the logical expression is “S <TH1 && Time_C <Time_D”), the sensor SR will stay in the misjudgment state S1. When the processor 130 further determines that the signal value S after Time_B at the end of the blind time is lower than the first determination threshold TH1 (that is, the logical expression is “S <TH1 && Time_C> Time_B”), the sensor SR will Will return to the stable state S0 (state transition direction T10). On the other hand, when the sensor SR temporarily transits to the misjudgment state S1, when the processor 130 determines that the signal value S exceeds the second judgment threshold value TH2 or the signal value S is not yet reached after Time_D at the end of the detection delay time When it is lower than the first decision threshold TH1 (that is, the logical expression is "S> TH2 || (TH1 <S <TH2 && Time_C> Time_D)"), the sensor SR will transition to the alarm state S2 (state transition Direction T12).

It must be noted that, in another embodiment, when the sensor SR is in the steady state S0, when the processor 130 determines that the signal value S is between the first determination threshold TH1 and the second determination threshold TH2 and has not yet When the end of the detection delay time is reached before Time_D, the sensor SR will not temporarily transition to the misjudgment state S1, but the processor 130 determines that the signal value S returns below the first determination valve within the detection delay time. Only when the value is TH1, the sensor SR is transferred from the stable state S0 to the misjudgment state S1 (state transition direction T01). When the processor 130 determines that the duration of the signal value S between the first determination threshold TH1 and the second determination threshold TH2 exceeds the end point Time_D of the detection delay time, the sensor SR will be in a stable state S0. Directly transition to alarm state S2 (state transition direction T02).

When the sensor SR is in the stable state S0 and the processor 130 determines that the signal value S exceeds the second determination threshold TH2 (that is, the logical expression is “S> TH2 && Time_C <Time_D”), the sensor SR will be directly Transition to alarm state S2 (state transition direction T02). Similarly, when the processor 130 further determines that the value S of the signal after Time_B at the end of the blind time is lower than the first determination threshold TH1 (that is, the logical expression is “S <TH1 && Time_C> Time_B”), it senses The controller SR will return to the stable state S0 (state transition direction T20).

In another embodiment, the electronic device 100 may be further connected to another sensor, and the originally set valve is adaptively adjusted according to a sensor signal or an environmental parameter detected by the other sensor. value. For example, fluctuations in ambient temperature can affect the magnitude of the signal value. Taking an infrared sensor as an example, when the temperature is high, the measured radiation value is large, so the threshold value needs to be increased to avoid the false condition due to the trigger condition being easily reached. Specifically, FIG. 7 is a schematic block diagram of an electronic device according to another embodiment of the present invention.

Referring to FIG. 7, the electronic device 700 is coupled to the temperature sensor TS, and the first determination threshold, the second determination threshold, and the time determination threshold have been stored in a memory (not shown) in advance. The analog-to-digital converter ADC of the electronic device 700 will receive the sensor signal of the detection sensor DS and convert it into a signal value. The threshold adjustment generator AVG of the electronic device 700 will receive the ambient temperature sensed by the temperature sensor TS and generate a threshold adjustment value for transmission to the threshold generator THG. The threshold generator THG will use the threshold adjustment value to adjust at least one of the original first determination threshold, the second determination threshold, and the time determination threshold. Next, the first threshold comparator TH1C and the second threshold comparator TH2C compare the signal value of the analog-to-digital converter ADC with the adjusted first and second decision thresholds, and detect the delay time. The comparator DDTC compares the duration of the signal value with the time determination threshold according to the timing clock CLK. Then, the aforementioned comparison result is transmitted to the state processor SP to perform a state determination process on the detection sensor DS as described in the foregoing embodiment. The detection sensor DS and the analog-to-digital converter ADC here are similar to the sensor SR and the analog-to-digital converter 110 in FIG. 1, respectively. The threshold adjustment generator AVG, the threshold generator THG, the first threshold comparator TH1C, the second threshold comparator TH2C, the detection delay time comparator DDTC, the timing clock CLK, and the state processor SP can be modules or It is a circuit, which is similar to the processor 130 in FIG. 1, so it will not be repeated here.

In summary, the alarm triggering method for the sensor and the electronic device using the same according to the present invention utilize multiple thresholds to determine whether the signal value of the sensor signal meets the condition of the alarm trigger to reduce false triggering. The probability of an alert. In addition, the present invention can adaptively adjust the threshold value according to different environments and different detection objects, so as to achieve more accurate alarm triggering.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧ electronic device

110‧‧‧ Analog Digital Conversion

120‧‧‧Memory

130‧‧‧ processor

SR‧‧‧Sensor

S202 ～ S212, S502 ～ S522‧‧‧step

PC‧‧‧Child

PA‧‧‧Adult

Ac, AA, A1, A2, A3, B1, B2‧‧‧ signal amplitude

TH, TH +, TH-‧‧‧ threshold

TH1, TH1 +, TH1-‧‧‧ first decision threshold

TH2, TH2 +, TH2-‧‧‧ second decision threshold

TD‧‧‧ Detection delay time

TB‧‧‧ blind time

S0‧‧‧steady state

S1‧‧‧Misjudgment status

S2‧‧‧Alarm status

T0, T10, T01, T12, T20, T02‧‧‧ State transition direction

DS‧‧‧ Detection Sensor

TS‧‧‧Temperature Sensor

700‧‧‧ electronic device

ADC‧‧‧ Analog Digital Converter

AVG‧‧‧Threshold Adjustment Generator

THG‧‧‧Threshold Generator

TH1C‧‧‧The first threshold comparator

TH2C‧‧‧Second threshold comparator

CLK‧‧‧ timing clock

DDTC‧‧‧ Detection Delay Comparator

SP‧‧‧ State Processor

FIG. 1 is a block diagram of an electronic device according to an embodiment of the invention. FIG. 2 is a flowchart of an alarm triggering method according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a conventional alarm triggering method. 4A-4B are schematic diagrams of an alarm triggering method according to an embodiment of the present invention. FIG. 5 is a calculation flowchart of an alarm triggering method according to an embodiment of the present invention. FIG. 6 is a state transition diagram of an alarm triggering method according to an embodiment of the present invention. FIG. 7 is a schematic block diagram of an electronic device according to another embodiment of the present invention.

Claims (22)

An alarm triggering method for a sensor includes the following steps: receiving a sensor signal from the sensor; determining whether a signal value of the sensor signal meets a first trigger condition, wherein the first trigger condition is associated with A first decision threshold; when the signal value meets the first trigger condition, determining whether the signal value meets a second trigger condition or a third trigger condition, where the second trigger condition is associated with a second decision threshold, the The second determination threshold is higher than the first determination threshold, the third trigger condition is associated with the time determination threshold; and when the signal value meets the second trigger condition or the third trigger condition, the sensing is determined The device is in an alarm state to output an alarm signal. The method according to item 1 of the scope of patent application, wherein the step of determining whether the signal value of the sensor signal meets the first trigger condition includes: determining whether the signal value exceeds the first determination threshold; and when the When the signal value exceeds the first determination threshold, it is determined that the signal value meets the first trigger condition. The method according to item 2 of the patent application scope further comprises: determining that the sensor is in a stable state when the signal value does not exceed the first determination threshold. The method according to item 2 of the scope of patent application, wherein when the signal value meets the first trigger condition, the step of determining whether the signal value meets the second trigger condition includes: determining whether the signal value exceeds the second determination A threshold value; and when the signal value exceeds the second determination threshold value, it is determined that the signal value meets the second triggering condition, thereby determining that the sensor is in the alarm state. The method according to item 4 of the scope of patent application, wherein when the sensor is in the alarm state, the method further comprises: 转移 transferring the sense when the signal value is lower than the first determination threshold after a blind time The detector is stable. The method according to item 2 of the scope of patent application, wherein when the signal value meets the first trigger condition, the step of determining whether the signal value meets the third trigger condition includes: judging whether the signal value exceeds the second judgment Threshold value; when the value of the signal does not exceed the second determination threshold value, determine whether the continuous time that the value of the signal exceeds the first determination threshold value exceeds the time determination threshold value; and when the value of the signal exceeds the first determination threshold value When the continuous time of the value exceeds the time determination threshold, it is determined that the signal value meets the third triggering condition, thereby determining that the sensor is in the alarm state. The method according to item 1 of the scope of patent application, further comprising: determining that the sensor is in a false judgment state when the continuous value of the signal value exceeds the first judgment threshold value does not exceed the time judgment threshold value. The method according to item 7 of the scope of patent application, wherein when the sensor is in the state of misjudgment, the method further comprises: when the signal value is lower than the first decision threshold after a blind time, transferring the sense The detector is stable. The method according to item 1 of the patent application scope further comprises: 接收 receiving another sensor signal from another sensor; and adjusting the first determination threshold, the At least one of the second determination threshold and the time determination threshold. The method according to item 9 of the application, wherein the other sensor is an ambient temperature sensor, and the signal value of the other sensor signal is an ambient temperature value. An electronic device includes: a sensor; an analog digital converter coupled to the sensor for receiving a sensor signal from the sensor and converting the sensor signal into a signal value; a memory Body for storing data; and a processor coupled to the analog-to-digital converter and the memory for performing the following steps: judging whether the signal value of the sensor signal meets a first trigger condition, wherein the first A trigger condition is associated with the first determination threshold; When the signal value meets the first trigger condition, determine whether the signal value meets the second trigger condition or the third trigger condition, wherein the second trigger condition is associated with the second A determination threshold, the second determination threshold is higher than the first determination threshold, and the third trigger condition is associated with a time determination threshold; and when the signal value meets the second trigger condition or the third trigger condition To determine that the sensor is in an alarm state to output an alarm signal. The electronic device according to item 11 of the patent application scope, wherein the processor is further configured to perform the following steps: determine whether the value of the signal exceeds the first determination threshold; and when the value of the signal exceeds the first determination threshold To determine that the signal value meets the first trigger condition. The electronic device according to item 12 of the patent application scope, wherein the processor is further configured to perform the following steps: when the signal value does not exceed the first determination threshold, determine that the sensor is in a stable state. The electronic device according to item 12 of the patent application scope, wherein when the signal value meets the first trigger condition, the processor is configured to perform the following steps: determine whether the signal value exceeds the second determination threshold; and when the signal value When the signal value exceeds the second determination threshold, it is determined that the signal value meets the second triggering condition, thereby determining that the sensor is in the alarm state. The electronic device according to item 14 of the patent application scope, wherein when the sensor is in the alarm state, the processor is further configured to perform the following steps: when the signal value is lower than the first determination valve after a blind time Value, the sensor is transferred to a steady state. The electronic device according to item 12 of the scope of patent application, wherein when the signal value meets the first trigger condition, the processor is configured to perform the following steps: ： determine whether the value of the signal exceeds the second determination threshold; when the signal When the value does not exceed the second determination threshold, determine whether the continuous time that the signal value exceeds the first determination threshold exceeds the time determination threshold; and when the signal value exceeds the first determination threshold, the continuous time exceeds When the time determines the threshold, it is determined that the signal value meets the third triggering condition, thereby determining that the sensor is in the alarm state. According to the electronic device described in claim 11 of the patent application scope, the processor is further configured to perform the following steps: when the continuous value of the signal value exceeds the first determination threshold does not exceed the time determination threshold, determine the sense The detector is in a state of misjudgment. The electronic device according to item 17 of the scope of patent application, wherein when the sensor is in the misjudgment state, the processor is further configured to perform the following steps: when the signal value is lower than the first decision valve after a blind time Value, the sensor is transferred to a steady state. The electronic device according to item 11 of the patent application scope further includes another sensor, and the processor is further configured to perform the following steps: 接收 receiving another sensor signal from the other sensor; and according to the another sensor, The signal value of the sensor signal adjusts at least one of the first determination threshold, the second determination threshold, and the time determination threshold. The electronic device according to item 19 of the application, wherein the other sensor is an ambient temperature sensor, and the signal value of the other sensor signal is an ambient temperature value. If the electronic device described in item 11 of the patent application scope is suitable for use with another sensor, the processor is further configured to perform the following steps: 接收 receiving another sensor signal from another sensor; and according to the A signal value of another sensor signal adjusts at least one of the first determination threshold, the second determination threshold, and the time determination threshold. According to the electronic device of claim 21, the other sensor is an ambient temperature sensor, and the signal value of the other sensor signal is an ambient temperature value.