Electric cooker, electric cooker insect expelling method and device and computer equipment

Abstract

The invention relates to the technical field of electrical equipment, and discloses an electric rice cooker, an electric rice cooker insect expelling method and device and computer equipment. According to the electric rice cooker insect expelling method, an infrared sensor is used for capturing dynamic heat signals generated by insect body surfaces, and a vibration sensor is used for detecting micro-mechanical vibration caused by insect crawling; and a current sensor is used for monitoring the abnormal current change rate of the power supply line caused by insect activity, so that the change conditions of the three signals are comprehensively analyzed in the same time window, low-level interference events of insects are accurately judged, and a first-level insect expelling response is triggered. According to the method, the sensitivity and the accuracy of insect intrusion detection are improved, the problem of misjudgment possibly caused by a single sensor can be effectively avoided, and then the safety and the stability of electronic elements in the electric cooker are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, in particular to an electric rice cooker, an electric rice cooker pest control method, device and computer equipment. BACKGROUND

[0002] The circuit board of a conventional electric rice cooker is usually installed at the bottom of the inner container or inside the upper cover. Due to the sealing defect of the shell or the structural design defect, a gap is easily generated during long-term use, which leads to the invasion of small insects such as cockroaches and ants into the circuit board area. In the crawling process, the insects may cause short circuit of the circuit, conduction between pins, or even bite the insulating materials or electronic components, thereby causing damage to the circuit board or failure of the function. When the insects contact the key sensing components such as temperature sensors and pressure sensors, the signal acquisition may be abnormal, resulting in temperature misjudgment, heating out of control or cooking program disorder, which affects the taste of rice and use safety. In addition, the residual insect carcasses, excrement or secretions are not only difficult to clean, but also easy to breed bacteria and mold, which brings serious health hazards and may harm the health of users in the long run. Therefore, how to effectively prevent insects from invading the internal circuit area of the electric rice cooker and improve the sealing performance, reliability and food hygiene and safety level of the product has become a technical problem to be solved. SUMMARY

[0003] Therefore, the present application provides an electric rice cooker, an electric rice cooker pest control method, device and computer equipment to solve the technical problem that the existing electric rice cooker is prone to invasion of insects into the circuit board area due to insufficient sealing, thereby causing short circuit failure, sensor misjudgment and sanitary pollution.

[0004] In a first aspect, the present application provides an electric rice cooker pest control method. The electric rice cooker includes a pot body and a cover body, an inner container is arranged in the pot body, and a circuit board is arranged in the cover body. The electric rice cooker pest control method includes: obtaining a heat radiation signal detected by an infrared sensor, wherein the infrared sensor is arranged at the edge of the circuit board or the bottom of the inner container; obtaining a vibration acceleration signal detected by a vibration sensor, wherein the vibration sensor is arranged below the circuit board; obtaining a current change rate signal detected by a current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply circuit of the circuit board; when the heat radiation signal, the vibration acceleration signal and the current change rate signal belonging to the same time window are greater than a preset first threshold value, a preset second threshold value and a preset third threshold value respectively, it is determined that an insect low-level interference event occurs, and a first-level pest control response is started.

[0005] The electric rice cooker pest control method provided by the application realizes multi-dimensional accurate monitoring of insect activities by integrating pyroelectric infrared sensors, vibration sensors and current sensors. On the basis of the design of the pot body and the cover body, the dynamic thermal signals generated by the insect body surface are captured by the infrared sensors arranged at the edge of the circuit board or the bottom of the inner container, the micromechanical vibration caused by the insect crawling is detected by the vibration sensor located below the circuit board, and the abnormal current change rate of the power supply line caused by the insect activities is monitored by the current sensor, so that the change of the three signals in the same time window is comprehensively analyzed, the insect low-level interference event is accurately determined, and the first-level pest control response is triggered. This method not only improves the sensitivity and accuracy of insect invasion detection, but also effectively avoids the misjudgment problem caused by a single sensor, thereby ensuring the safety and stability of the internal electronic elements of the electric rice cooker.

[0006] In an optional embodiment, the electric rice cooker is further provided with an ultrasonic wave generator, and the first-level pest control response includes: controlling the ultrasonic wave generator to work at a preset first power for a preset first time length.

[0007] By arranging the ultrasonic wave generator in the electric rice cooker and starting the first-level pest control response when the insect low-level interference event is detected, the ultrasonic wave signal in the sensitive frequency band of the insect can be effectively emitted to interfere or drive away the insects near the circuit board area, thereby realizing active protection without damaging the equipment elements.

[0008] In an optional embodiment, after the first-level pest control response ends, it further includes: judging whether the insect low-level interference event is triggered within a preset first interval time length; if yes, increasing the trigger number in the counter by 1; acquiring the trigger number in the counter; when the trigger number does not reach a preset fourth threshold, starting the first-level pest control response; when the trigger number reaches the fourth threshold, determining that it is an insect high-level interference event and starting the second-level pest control response.

[0009] The above-mentioned embodiment introduces the repeated trigger judgment mechanism within the time window after the first-level pest control response, and combines the counter to accumulate and count the frequency of the insect low-level interference event, which can effectively distinguish between incidental interference and persistent insect invasion; when the trigger number does not reach the fourth threshold, the first-level response is restarted to realize dynamic adaptive pest control and avoid overreaction; when the threshold is reached, it is determined that it is a high-risk insect high-level interference event and the second-level pest control response is started, which embodies the intelligent decision-making ability of the hierarchical response and significantly improves the scientificity and effectiveness of the pest control strategy, which helps to ensure the user experience and prolong the service life of the electric rice cooker.

[0010] In an alternative embodiment, after each initiation of the first-level insect expelling response, the following steps are further included: generating a trigger pulse for driving the counter, and within a lock time after the generation of the trigger pulse, no further determination of the low-level insect interference event is made; wherein the lock time is less than the first interval duration and is counted from the initiation of the first-level insect expelling response.

[0011] This embodiment effectively avoids repeated counting or false triggering caused by the vibration or electromagnetic fluctuation generated by the ultrasonic generator during operation being misdetected by the sensor, improves the stability and accuracy of system determination, and enhances the reliability and anti-interference ability of the multi-level insect expelling mechanism by generating a trigger pulse after each initiation of the first-level insect expelling response and starting a lock time of less than the first interval duration, during which repeated determination of the low-level insect interference event is suspended.

[0012] In an alternative embodiment, the electric rice cooker further includes a PTC heating element, which is arranged at the bottom of the circuit board; the second-level insect expelling response includes: controlling the ultrasonic generator to work at a preset second power for a preset second duration and generating a hot air flow of a preset temperature using the PTC heating element for a preset third duration; or, controlling the ultrasonic generator to work at a preset second power for a preset second duration, generating a hot air flow of a preset temperature using the PTC heating element for a preset third duration, and issuing an alarm signal.

[0013] This embodiment forms a multi-physical-field cooperative insect expelling mechanism by combining ultrasonic insect expelling and hot air flow generated by the PTC heating element in the second-level insect expelling response, uses high-temperature airflow to raise the environmental temperature in the circuit board area, destroys the insect's preference for a shady and humid environment, and enhances the expelling effect; at the same time, the continuous high-intensity work of the ultrasonic wave and the physical driving of the hot air flow are complementary, significantly improving the response capability to stubborn or dense insect pests, and the optional alarm signal can timely remind the user of the existence of serious insect infestation, facilitating the user to take further cleaning or protection measures, thereby ensuring the safe operation of the equipment while significantly improving the proactive protection level and intelligent level of the insect expelling system.

[0014] In an alternative embodiment, the electric rice cooker further comprises a steam generator arranged at the bottom of the inner container; after starting the first level of pest control response, the method further comprises: determining that the pest control is successful when the low-level insect disturbance event is not triggered within the first interval; determining whether the electric rice cooker is in a working state; when the electric rice cooker is not in the working state, starting the steam generator to clean the insect activity area by using the steam generated by the steam generator; and / or; after starting the second level of pest control response, the method further comprises: determining whether the high-level insect disturbance event is triggered within a preset second interval; determining that the pest control is successful when the high-level insect disturbance event is not triggered within the second interval; after the pest control is successful, clearing the number of triggering times in the counter, and determining whether the electric rice cooker is in the working state; when the electric rice cooker is not in the working state, starting the steam generator to clean the insect activity area by using the steam generated by the steam generator.

[0015] The above embodiment uses the steam generator arranged at the bottom of the inner container to deeply clean the insect activity area that may exist when the pest control is successful and the electric rice cooker is in a non-working state, effectively removes the residues such as insect corpses and secretions, and prevents the risk of circuit board corrosion or short circuit caused by these residues.

[0016] In a second aspect, the present application further provides an electric rice cooker pest control device. The electric rice cooker comprises a pot body and a cover body, the pot body is provided with an inner container, and the cover body is provided with a circuit board. The electric rice cooker pest control device comprises a first acquisition module, a second acquisition module, a third acquisition module and a pest control module. The first acquisition module is used to acquire a heat radiation signal detected by an infrared sensor, wherein the infrared sensor is arranged at the edge of the circuit board or the bottom of the inner container. The second acquisition module is used to acquire a vibration acceleration signal detected by a vibration sensor, wherein the vibration sensor is arranged below the circuit board. The third acquisition module is used to acquire a current change rate signal detected by a current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply circuit of the circuit board. The pest control module is used to determine that it is a low-level insect disturbance event when the heat radiation signal belonging to the same time window is greater than a preset first threshold value, the vibration acceleration signal is greater than a preset second threshold value, and the current change rate signal is greater than a preset third threshold value, and start the first level of pest control response.

[0017] In a third aspect, the present application further provides a computer device comprising a memory and a processor, which are communicatively connected with each other, and the memory stores computer instructions. The processor executes the computer instructions to perform the electric rice cooker pest control method of the first aspect or any of the corresponding embodiments thereof.

[0018] In a fourth aspect, the present application further provides an electric rice cooker comprising the computer device of the third aspect.

[0019] In a fifth aspect, the present application further provides a computer readable storage medium, which has computer instructions stored thereon, and the computer instructions are used to make a computer execute the rice cooker pest control method in the first aspect or any of the corresponding embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 is a flow chart of the rice cooker pest control method according to an embodiment of the present application;

[0022] Figure 2 is a flow chart of another rice cooker pest control method according to an embodiment of the present application;

[0023] Figure 3 is a schematic diagram of a logic circuit in a computer device according to an embodiment of the present application;

[0024] Figure 4 is a flow chart of still another rice cooker pest control method according to an embodiment of the present application;

[0025] Figure 5 is a schematic diagram of control logic for self-cleaning according to an embodiment of the present application;

[0026] Figure 6 is a structural block diagram of a rice cooker pest control device according to an embodiment of the present application;

[0027] Figure 7 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] According to the embodiment of the present application, an electric rice cooker pest control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in a different order.

[0030] In this embodiment, an electric rice cooker pest control method is provided, which can be used in a computer device. The electric rice cooker includes a pot body and a cover body, and an inner container is arranged in the pot body, and a circuit board is arranged in the cover body.

[0031] Figure 1 The flowchart of the electric rice cooker pest control method according to the embodiment of the present application is shown in FIG. 1, which includes the following steps: Figure 1

[0032] Step S101: Obtain the heat radiation signal detected by the infrared sensor, wherein the infrared sensor is arranged at the edge of the circuit board or the bottom of the inner container.

[0033] Specifically, the infrared sensor is a pyroelectric infrared sensor. When insects are active, the body surface will generate weak but measurable heat, and the infrared radiation will change due to the movement of the insects. The pyroelectric infrared sensor detects the insects by capturing the dynamic heat signal, thereby providing a trigger basis for subsequent pest control or alarm.

[0034] Step S102: Obtain the vibration acceleration signal detected by the vibration sensor, wherein the vibration sensor is arranged below the circuit board.

[0035] This is because, when the insects crawl on the circuit board, they will cause characteristic micro-mechanical vibrations, which are efficiently conducted to the vibration sensor below through the PCB structure. Even if the amplitude is weak, it can be captured by a high-sensitivity sensor and judged as biological activity through signal analysis, thereby achieving effective monitoring of the invading insects.

[0036] Step S103: Obtain the current change rate signal detected by the current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply circuit of the circuit board.

[0037] This is because, the local short circuit caused by the crawling of the insects has a specific current change rate characteristic, which is much lower than the current steep change of the normal power device switch. The current sensor can accurately capture this abnormal current with slow change, and combined with the algorithm, the effective detection of insect activity can be realized.

[0038] Step S104: When the heat radiation signal, the vibration acceleration signal and the current change rate signal belonging to the same time window are greater than the preset first threshold value, the preset second threshold value and the preset third threshold value respectively, it is determined that it is a low-level interference event of the insects, and a first-level pest control response is started.​

[0039] The embodiment adopts a multi-sensor cooperative detection and time synchronization verification mechanism to avoid false judgment caused by interference of a single sensor. When the thermal radiation signal, the vibration acceleration signal and the current rate of change signal are triggered at the same time within a same time window (for example, within 1-3 seconds) and each reaches a preset judgment threshold, the system performs comprehensive judgment. When the thermal radiation signal is greater than a preset first threshold, the vibration acceleration signal is greater than a preset second threshold and the current rate of change signal is greater than a preset third threshold, the system determines that there is an insect low-level interference event, that is, an insect is moving in the circuit board area.

[0040] For example, the first threshold is 0.5°C. This is because the body surface temperature of an insect during movement is usually 1-3°C higher than the surrounding environment, which can cause obvious infrared radiation change. The first threshold of 0.5°C can effectively capture such weak but characteristic temperature difference signal, ensure sensitive response to insect invasion, and avoid interference caused by non-biological factors such as slow environmental warming and uneven heat dissipation, thereby avoiding false judgment.

[0041] The second threshold is 0.01 m / s 2 . This is because the vibration acceleration generated by an insect crawling on the surface of a circuit board is usually in the range of 0.01-0.1 m / s 2 . The intermittent contact of the insect's feet with the surface of the board will cause weak but identifiable structural vibration. The second threshold of 0.01 m / s 2 can effectively capture such low-intensity and low-frequency biological activity signal, and ensure sensitive detection of early invasion. At the same time, the threshold is much lower than the acceleration amplitude caused by external mechanical vibration such as equipment handling, collision or fan operation, which can effectively distinguish insect crawling from regular environmental disturbance and avoid false judgment.

[0042] The third threshold is 0.05 A / s. This is because when an insect is crawling, it may contact the exposed conductor on the circuit board with its body, forming a local leakage or weak short circuit, causing the power supply current to slowly rise abnormally, and the current rate of change is usually in the range of 0.05-0.1 A / s. The third threshold of 0.05 A / s can effectively capture such characteristic slowly varying current caused by insects, ensure early identification of potential short circuit risk, and avoid false judgment caused by current fluctuations such as standby current changes or sensor signal fluctuations during normal operation of the rice cooker. At the same time, the threshold is much lower than the sharp current change caused by the start and stop of the heater, relay and other power devices, and has good anti-interference ability.

[0043] In an alternative embodiment, the electric rice cooker is also provided with an ultrasonic generator, and the first level of insect repelling response includes: controlling the ultrasonic generator to work at a preset first power for a preset first time length.

[0044] Specifically, the ultrasonic wave generator is integrated near the circuit board, the first power can be 20-100 kHz, and the first time length can be 10-30 seconds. In an example, a 555 timer can be used to generate a square wave signal with a frequency of 30 kHz, and the signal is amplified through a field effect transistor driving circuit to drive an ultrasonic speaker with a center frequency of 30 kHz to emit insect-repelling sound waves. At the same time, the counter and the 555 timer work together to accurately control the emission time length of the insect-repelling sound waves, for example, to work for 15 seconds. The ultrasonic wave generator should be physically isolated from the main circuit board with a distance of not less than 10 mm to effectively reduce electromagnetic interference and ensure stable operation of the system.

[0045] The insect-repelling method of the electric rice cooker provided in this embodiment realizes multi-dimensional and accurate monitoring of insect activities by integrating a pyroelectric infrared sensor, a vibration sensor, and a current sensor. Based on the design of the pot body and the cover body, the infrared sensor arranged at the edge of the circuit board or the bottom of the inner container captures the dynamic heat signals generated by the insect body surface, the vibration sensor located below the circuit board detects the micro-mechanical vibration caused by the insect crawling, and the current sensor monitors the abnormal current change rate of the power supply line caused by the insect activity, so as to comprehensively analyze the changes of the three signals in the same time window, accurately determine the insect low-level interference event, and trigger the first-level insect-repelling response. This method not only improves the sensitivity and accuracy of insect intrusion detection, but also effectively avoids the misjudgment problem that may be caused by a single sensor, thereby ensuring the safety and stability of the internal electronic components of the electric rice cooker.

[0046] An electric rice cooker insect-repelling method is provided in this embodiment, which can be used for a computer device. Figure 2 Another flowchart of the electric rice cooker insect-repelling method according to an embodiment of the present application is shown in FIG. 2, which includes the following steps: Figure 2

[0047] Step S201: Obtain the heat radiation signal detected by the infrared sensor, wherein the infrared sensor is arranged at the edge of the circuit board or the bottom of the inner container.

[0048] Step S202: Obtain the vibration acceleration signal detected by the vibration sensor, wherein the vibration sensor is arranged below the circuit board.

[0049] Step S203: Obtain the current change rate signal detected by the current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply line of the circuit board.

[0050] Step S204: When the heat radiation signal, the vibration acceleration signal, and the current change rate signal belonging to the same time window are greater than the preset first threshold value, the preset second threshold value, and the preset third threshold value respectively, it is determined as an insect low-level interference event, and the first-level insect-repelling response is started.​

[0051] Wherein, whether the thermal radiation signal is greater than the first threshold, whether the vibration acceleration signal is greater than the second threshold, and whether the current rate of change signal is greater than the third threshold can be realized by comparators. In addition, before the signal is input into the comparator, the original output of each sensor needs to be amplified and filtered by a signal conditioning circuit to improve the signal quality and the discrimination accuracy. Specifically, an operational amplifier is used to amplify the weak signal output by the sensor, and the amplification factor is set according to the sensitivity of the sensor to improve the signal detectability; then, the RC filter circuit is used for noise suppression, wherein the low-pass filter removes high-frequency interference, and the high-pass filter suppresses DC drift, so as to output stable and clean signals for subsequent comparison and judgment.

[0052] As shown in Figure 3 The output signals of the three comparators are connected to an AND gate unit for logic integration. Only when the signals of the three sensors all exceed the respective thresholds, the comparators output high level, that is, when the infrared, vibration and current three signals all meet the triggering conditions, the AND gate outputs high level, and determines that it is an effective insect invasion event, and the insect repelling mode is started. If any signal does not reach the threshold, the AND gate output remains low level, and the system does not respond. The design significantly improves the accuracy of identification through the "triple redundancy" logic judgment, effectively avoids the misoperation caused by the false triggering of a single sensor, and ensures that the insect repelling response is activated only when it is sure that there is insect activity.

[0053] Step S205: performing a first-level insect repelling response.

[0054] Specifically, the first-level insect repelling response includes: controlling the ultrasonic wave generator to work at a preset first power for a preset first time length.

[0055] Step S206: judging whether an insect low-level interference event is triggered within a preset first interval time length; if yes, going to step S207; if no, going to step S213.

[0056] That is, when the insect low-level interference event is triggered within the first interval time length, the insect low-level interference event is counted; when the insect low-level interference event is not triggered within the first interval time length, it is determined that the insect repelling is successful.

[0057] Step S207: adding 1 to the triggering number in the counter.

[0058] Step S208: obtaining the triggering number in the counter.

[0059] Step S209: judging whether the triggering number reaches a preset fourth threshold; when the triggering number does not reach the preset fourth threshold, returning to step S205; when the triggering number reaches the fourth threshold, going to step S210.

[0060] Step S210: determining that the insect is a high-level interference event, and starting a second-level insect repelling response.

[0061] Step S211: executing the second-level insect repelling response.

[0062] In an optional embodiment, the second-level insect repelling response comprises: controlling the ultrasonic generator to work at a preset second power for a preset second time length, and using the PTC heating element to generate a hot air flow at a preset temperature for a preset third time length.

[0063] The second power of the ultrasonic generator can be the same as or different from the first power of the ultrasonic generator; the second time length of the ultrasonic generator can be the same as or different from the first time length of the ultrasonic generator.

[0064] The PTC heating element can be arranged on the circuit board bottom plate, and the third time length can be 15-30 seconds. In an example, the PTC heating element can be temperature-controlled by a PWM modulation circuit to generate a high-temperature air flow of 80-120℃ for 20 seconds to drive away insects. Specifically, a 100W / 12V PTC heating sheet can be used to heat below the circuit board bottom plate to form a directional hot air flow. A temperature sensor and a comparator are used to form a closed-loop control circuit to adjust the heating intensity in real time and ensure temperature stability. A 555 timer is used to generate a PWM signal with a duty cycle of 50% to drive the control circuit, and a counter is used to realize accurate control of the 20-second working time length. At the same time, the PTC heating element is physically isolated from the main circuit board by no less than 15mm to avoid high-temperature conduction from causing thermal damage to electronic components and ensure safe and stable operation of the system.

[0065] In another optional embodiment, the second-level insect repelling response comprises: controlling the ultrasonic generator to work at a preset second power for a preset second time length, using the PTC heating element to generate a hot air flow at a preset temperature for a preset third time length, and sending an alarm signal.

[0066] Step S212: determining whether the electric rice cooker is in a working state; when the electric rice cooker is not in the working state, proceeding to step S213.

[0067] Step S213: starting the steam generator to clean the insect activity area using steam generated by the steam generator.

[0068] That is to say, in order to ensure the operation safety and user experience, the system adopts a double confirmation mechanism to activate the self-cleaning mode: only after the successful execution of the pest control and the complete end of the rice cooking program, the self-cleaning function is automatically started, thereby avoiding the false triggering of the cleaning during the rice cooking process due to the user's pause operation. At the same time, the user can configure the function through the APP, providing a self-cleaning switch option (default on), if the user needs to use the rice cooker immediately after cleaning, the user can manually turn off the function, flexibly controlling the device behavior.

[0069] In terms of user interaction interface design, the system displays the anti-pest state of the circuit board in real time through the touch screen of the rice cooker and the APP of the mobile phone, such as "circuit board anti-pesting" or "pest control mode started", so that the user can intuitively understand the running status of the device; at the same time, a "forced pest control" manual control button is provided on the panel of the rice cooker, and the user can manually trigger the pest control operation at any time according to the needs, improving the convenience and autonomy of use.

[0070] The rice cooker pest control method provided in the embodiment improves the recognition accuracy through multi-sensor fusion detection and hardware-level signal conditioning, effectively realizes intelligent discrimination and gradient disposal of insect invasion in combination with a hierarchical pest control response mechanism, uses ultrasonic waves, hot air and alarm in a cooperative manner to deal with serious insect infestation, and automatically starts steam cleaning during non-working period, thereby ensuring the health and safety of the device and the reliability of the circuit, and significantly improving the intelligent level and long-term use stability of the rice cooker.

[0071] In the embodiment, a rice cooker pest control method is provided, which can be used for a computer device. Figure 4 According to the flowchart of the rice cooker pest control method of the embodiment of the present application, as shown in Figure 4 The flowchart includes the following steps:

[0072] Step S401: Obtain the heat radiation signal detected by the infrared sensor, wherein the infrared sensor is arranged at the edge of the circuit board or the bottom of the inner container.

[0073] Step S402: Obtain the vibration acceleration signal detected by the vibration sensor, wherein the vibration sensor is arranged below the circuit board.

[0074] Step S403: Obtain the current change rate signal detected by the current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply circuit of the circuit board.

[0075] Step S404: When the heat radiation signal belonging to the same time window is greater than the preset first threshold value, the vibration acceleration signal is greater than the preset second threshold value, and the current change rate signal is greater than the preset third threshold value, it is determined as a low-level interference event of insects, and a first-level pest control response is started.

[0076] Step S405: Control the ultrasonic generator to work at the preset first power for a preset first time length and generate a trigger pulse for driving the counter. No determination of the insect low-level interference event is made within the lock time after the trigger pulse is generated.

[0077] The lock time is less than the first interval time length and is counted from the start of the first-level insect repelling response.

[0078] In this embodiment, the driving circuit generates a trigger pulse signal for driving the counter, which is used to record the current insect repelling event and as the basis for the counter accumulation. At the same time, the system enters a preset lock time (for example, 5-10 seconds), during which the comprehensive determination of the infrared, vibration and current signals is suspended to shield the reverse influence of the electromagnetic interference, structural vibration or current fluctuation during the ultrasonic wave operation on the sensor and prevent the system from misjudging as a new insect interference event, thereby ensuring the stability and reliability of the detection logic. The lock time is counted from the start of the first-level insect repelling response, and its duration is less than the first interval time length for judging the repeated triggering, so as to ensure that the real continuous insect situation can be responded to in time after the insect repelling ends.

[0079] Step S406: Determine whether the insect low-level interference event is triggered within the preset first interval time length. If yes, go to step S407; if no, go to step S412.

[0080] Step S407: Increase the trigger number in the counter by 1.

[0081] Step S408: Obtain the trigger number in the counter.

[0082] Step S409: Determine whether the trigger number reaches the preset fourth threshold value. When the trigger number does not reach the preset fourth threshold value, return to step S405; when the trigger number reaches the fourth threshold value, go to step S410.

[0083] Step S410: Determine as the insect high-level interference event and start the second-level insect repelling response.

[0084] Step S411: Control the ultrasonic generator to work at the preset second power for a preset second time length, use the PTC heating element to generate a hot air flow at a preset temperature and last for a preset third time length, and emit an alarm signal.

[0085] Step S412: Determine whether the electric rice cooker is in the working state. When the electric rice cooker is not in the working state, go to step S413.

[0086] Step S413: Start the steam generator to clean the insect activity area by using the steam generated by the steam generator.

[0087] That is, after determining that the electric rice cooker is not in a normal cooking state (i.e., in a power-off or standby state), the system starts the steam generator to clean the areas where insects may be active, such as the circuit board periphery and the inner container cavity, using the high-temperature steam generated by the steam generator. Figure 5 As shown, the self-cleaning process is divided into two stages: steam generation and drying. First, saturated steam is continuously generated at a temperature of 100°C ± 2°C for 10 minutes to soften the insect carcasses and essential oil residues on the circuit board. Then, the drying stage is entered, and the fan is started to run at a speed of 1200 rpm for 10 minutes to quickly evaporate the internal moisture at an ambient temperature of 40°C to prevent condensation. To ensure safety, the system sets an interruption condition, which will automatically trigger a power-off protection when the internal humidity exceeds 50% or the temperature is higher than 45°C, to prevent the circuit board from being damaged by moisture or overheating.

[0088] Specifically, the high-temperature steam is continuously sprayed at a temperature of 100°C for about 10 minutes to effectively soften and flush the contaminants such as insect carcasses, excrement, secretions, or possible residual insect repellents attached to the surface of the electronic components in a high-temperature and high-humidity environment, preventing the accumulation of these contaminants from causing problems such as reduced insulation performance, circuit short-circuiting, or poor heat dissipation.

[0089] The steam generator is integrated into the bottom of the inner container of the electric rice cooker as a miniature steam generation module, mainly composed of a PTC heating sheet (100W / 12V), a water tank that can store 0.5-1L of water, and a solenoid valve. The solenoid valve is used to accurately control the water inflow and prevent dry burning. The module is installed close to the bottom surface of the inner container, and the PTC heating sheet is used to quickly heat the water in the water tank to 100°C to generate saturated steam. The generated high-temperature steam is not directly sprayed towards the circuit board area, but is guided by a U-shaped stainless steel flow guide groove (thickness 0.8mm) located above the side wall of the inner container to flow towards the side wall of the inner container and the steam outlet, forming a directional steam flow channel to ensure that the steam only acts on the inner container cavity and the areas where insects may be active (such as the area near the steam outlet, the inner container edge gap, etc.), effectively softening and removing insect carcasses, secretions, or insect repellent residues.

[0090] During the whole process, the circuit board is located in the upper area of the electric rice cooker, parallel to the top of the inner container, and is completely isolated from the steam area through multiple protection measures: first, the steam flow channel maintains a vertical distance of ≥10mm from the circuit board, and a sealing isolation layer composed of a silica gel sealing ring and a 0.5mm thick stainless steel splash-proof plate is arranged between the two, physically blocking the steam penetration path; second, the circuit board itself is fixed to the inside of the shell and does not directly contact the inner container, and a metal shielding cover is further provided above to prevent moisture and splashing. After the steam cleaning is completed, the 5W centrifugal fan at the top of the cover body is automatically started and runs continuously for 10 minutes to promote the discharge of internal moisture, control the humidity in the circuit board area to below 30%, and avoid the risk of moisture.

[0091] Further, after the steam generator cleaning process is completed, the system automatically enters the drying stage. At this time, the fan located at the top of the cover body of the electric rice cooker is turned on, and directional airflow is delivered to the top of the inner container and the inside of the cavity through the air outlet, accelerating the evaporation of moisture remaining in the inner container sidewall, steam flow channel and surrounding area. The drying process is carried out at room temperature or slightly elevated temperature (environmental temperature controlled at ≤40℃), avoiding thermal stress damage to electronic components. At the same time, the circuit board area is physically isolated from the steam area by the previously provided sealing isolation layer (silica gel sealing ring + metal splash-proof plate), ensuring that the fan airflow only promotes the discharge of external moisture and does not bring residual water vapor into the sensitive electronic area. Combined with real-time monitoring of temperature and humidity sensors, the system can judge the drying effect, ensure that the humidity around the circuit board is reduced to below 30%, and effectively prevent problems such as moisture, short circuit or component corrosion caused by residual moisture after cleaning, ensuring the electrical safety and long-term stable operation of the electric rice cooker after self-cleaning.

[0092] The insect control method for the electric rice cooker provided in this embodiment improves the accuracy of determination through multi-sensor cooperative detection and locking mechanism, and realizes intelligent identification, gradient response and self-maintenance of insect pests by combining hierarchical insect control, high-temperature hot air enhanced removal and automatic steam cleaning and drying during non-working period, effectively ensuring the safety of the circuit and the long-term reliable operation of the equipment.

[0093] In this embodiment, an electric rice cooker insect control device is also provided, which is used to implement the above embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware implementation is also possible and contemplated.

[0094] This embodiment provides an electric rice cooker insect control device, as shown in Figure 6 , comprising:

[0095] The first acquisition module 601 is configured to acquire a heat radiation signal detected by an infrared sensor, wherein the infrared sensor is arranged at an edge of the circuit board or at a bottom of the inner container.

[0096] The second acquisition module 602 is configured to acquire a vibration acceleration signal detected by a vibration sensor, wherein the vibration sensor is arranged below the circuit board.

[0097] The third acquisition module 603 is configured to acquire a current change rate signal detected by a current sensor, wherein the current change rate signal is used to monitor a circuit fluctuation of a power supply circuit of the circuit board.

[0098] The pest expelling module 604 is configured to determine a low-level insect interference event when the heat radiation signal, the vibration acceleration signal and the current change rate signal all belong to the same time window and are greater than a preset first threshold value, a preset second threshold value and a preset third threshold value respectively, and to start a first-level pest expelling response.

[0099] In some optional embodiments, the electric rice cooker further comprises an ultrasonic generator, and the pest expelling module 604 is specifically configured to control the ultrasonic generator to work at a preset first power for a preset first time length.

[0100] In some optional embodiments, after the first-level pest expelling response ends, the pest expelling module 604 is further configured to determine whether the low-level insect interference event is triggered within a preset first interval time length, to increase the number of triggering times in a counter by 1 if the low-level insect interference event is triggered, to acquire the number of triggering times in the counter, to start the first-level pest expelling response when the number of triggering times does not reach a preset fourth threshold value, and to determine a high-level insect interference event and to start a second-level pest expelling response when the number of triggering times reaches the fourth threshold value.

[0101] In some optional embodiments, after starting the first-level pest expelling response each time, the pest expelling module 604 is further configured to generate a triggering pulse for driving the counter, and to no longer determine the low-level insect interference event within a lock time after the triggering pulse is generated; wherein the lock time is less than the first interval time length, and the lock time is counted from when the first-level pest expelling response is started.

[0102] In some optional embodiments, the electric rice cooker further comprises a PTC heating element arranged at a bottom of the circuit board, and the pest expelling module 604 is configured to control the ultrasonic generator to work at a preset second power for a preset second time length, to generate a hot air flow at a preset temperature by using the PTC heating element for a preset third time length, or to control the ultrasonic generator to work at the preset second power for the preset second time length, to generate the hot air flow at the preset temperature by using the PTC heating element for the preset third time length, and to send an alarm signal.

[0103] In some optional embodiments, the rice cooker insect expelling device further comprises a cleaning module. The rice cooker further comprises a steam generator arranged at the bottom of the inner container. After the first level insect expelling response is started, the cleaning module is configured to: determine that the insect expelling is successful when the insect low level interference event is not triggered within the first interval; determine whether the rice cooker is in a working state; and start the steam generator to clean the insect activity area by using the steam generated by the steam generator when the rice cooker is not in the working state.

[0104] In some optional embodiments, the rice cooker insect expelling device further comprises a cleaning module. The rice cooker further comprises a steam generator arranged at the bottom of the inner container. After the second level insect expelling response is started, the cleaning module is configured to: determine whether the insect high level interference event is triggered within a preset second interval; determine that the insect expelling is successful when the insect high level interference event is not triggered within the second interval; clear the number of triggering times in the counter after the insect expelling is successful, and determine whether the rice cooker is in a working state; and start the steam generator to clean the insect activity area by using the steam generated by the steam generator when the rice cooker is not in the working state.

[0105] Further function descriptions of the above-mentioned modules and units are the same as those of the corresponding embodiments, and will not be described here.

[0106] The rice cooker insect expelling device in the embodiment is in the form of a functional unit. The unit herein refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory executing one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0107] The embodiment of the present application further provides a computer device having the above-mentioned Figure 6 rice cooker insect expelling device.

[0108] Please refer to Figure 7 , Figure 7 is a structural schematic diagram of a computer device provided by an optional embodiment of the present application, as Figure 7As shown, the computer device includes one or more processors 10, memory 20, and interfaces 50 for external devices such as modems and network interfaces. One or more external devices are present, such as display devices, keyboards, mice, speakers, microphones, printers, joysticks, and the like. The computer device optionally has a storage device, such as a disk drive, a flash drive, or a combination thereof, and a computer-readable medium such as a flash memory, a disk, or an optical medium. The computer device includes volatile storage, such as RAM, and non-volatile storage, such as ROM. The computer device also includes one or more processors, such as one or more processors 10. The computer device optionally includes a graphics processing unit (GPU) for a computer graphics application. Figure 7 The processor 10 is used as an example in the embodiments.

[0109] The processor 10 can be a central processing unit, a network processing unit, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a general array logic, or any combination thereof.

[0110] The memory 20 stores instructions that are executable by the at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiments.

[0111] The memory 20 can include a program storage area and a data storage area. The program storage area can store an operating system, application programs required by at least one function, and the like. The data storage area can store data created according to the use of the computer device, and the like. In addition, the memory 20 can include a high-speed random access memory, and can further include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some optional embodiments, the memory 20 can optionally include a memory remotely arranged with respect to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0112] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state disk. The memory 20 can further include a combination of the above-mentioned kinds of memories.

[0113] The computer device further includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30, and the output device 40 can be connected through a bus or other means,Figure 7 The bus connection is taken as an example.

[0114] The input device 30 can receive inputted digital or character information, and generate key signal input related to user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), etc. The display device includes, but is not limited to, a liquid crystal display, a light-emitting diode, a display, and a plasma display. In some alternative embodiments, the display device can be a touch screen.

[0115] The computer device further includes a communication interface 30 for communication of the computer device with other devices or communication networks.

[0116] The embodiments of the present application also provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded to a local storage medium through network downloading, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer code, which, when accessed and executed by the computer, the processor, or the hardware, implements the method shown in the above embodiments.

[0117] Part of the present application can be applied as a computer program product, for example, computer program instructions, when executed by a computer, the operation of the computer can invoke or provide the method and / or technical solutions according to the present application. Those skilled in the art should understand that the form of computer program instructions in computer readable medium includes but is not limited to source file, executable file, installation package file, etc. Correspondingly, the way of computer program instructions executed by computer includes but is not limited to: the computer directly executes the instructions, or the computer executes the corresponding compiled program after compiling the instructions, or the computer reads and executes the instructions, or the computer executes the corresponding installed program after reading and installing the instructions. Here, the computer readable medium can be any available computer readable storage medium or communication medium accessible to the computer.

[0118] While embodiments of the application have been described in connection with the preferred embodiments of the various figures, those of ordinary skill in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the application, and that such modifications and changes fall within the scope of the appended claims.

Claims

1. A method for repelling insects in a rice cooker, characterized in that, The rice cooker includes a pot body and a lid, with an inner pot inside the pot body and a circuit board inside the lid. The rice cooker's insect-repelling method includes: Acquire thermal radiation signals detected by an infrared sensor, wherein the infrared sensor is disposed on the edge of the circuit board or the bottom of the inner liner; The vibration acceleration signal detected by the vibration sensor is acquired, wherein the vibration sensor is disposed below the circuit board; Acquire the current change rate signal detected by the current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply line of the circuit board; When the thermal radiation signal, the vibration acceleration signal, and the current change rate signal within the same time window are all greater than a preset first threshold, they are all greater than a preset second threshold, and they are all greater than a preset third threshold, it is determined to be a low-level insect interference event, and the first-level insect repellent response is initiated.

2. The method according to claim 1, characterized in that, The rice cooker is also equipped with an ultrasonic generator, and the first-level insect-repelling response includes: The ultrasonic generator is controlled to operate at a preset first power for a preset first duration.

3. The method according to claim 2, characterized in that, After the first level of insect repellent response ends, the following is also included: Determine whether the low-level insect disturbance event is triggered within a preset first interval; If so, increment the trigger count in the counter by 1; Obtain the number of triggers from the counter; When the number of triggers does not reach the preset fourth threshold, the first-level insect repellent response is initiated; When the number of triggers reaches the fourth threshold, it is determined to be an advanced insect interference event, and a second-level insect repellent response is initiated.

4. The method according to claim 3, characterized in that, After each activation of the first-level insect repellent response, the following is also included: A trigger pulse is generated to drive the counter. During the lock time after the trigger pulse is generated, the determination of the low-level insect interference event is no longer performed. The lock time is less than the first interval duration and is calculated from the start of the first level insect repellent response.

5. The method according to claim 3, characterized in that, The rice cooker also includes a PTC heating element, which is disposed at the bottom of the circuit board; the second-level insect repellent response includes: The ultrasonic generator is controlled to operate at a preset second power for a preset second duration and to generate a hot airflow at a preset temperature using the PTC heating element for a preset third duration. or, The ultrasonic generator is controlled to operate at a preset second power for a preset second duration, and the PTC heating element is used to generate a hot airflow at a preset temperature for a preset third duration while issuing an alarm signal.

6. The method according to claim 3, characterized in that, The rice cooker also includes a steam generator located at the bottom of the inner pot; after activating the first-level insect repellent response, it further includes: If the insect-related low-level disturbance event is not triggered within the first interval, the insect repellent is deemed successful. Determine whether the rice cooker is in working condition; When the rice cooker is not in the working state, the steam generator is turned on to use the steam generated by the steam generator to clean the area where insects are active. and / or; After initiating the second-level pest control response, the following is also included: Determine whether the advanced insect interference event is triggered within a preset second interval; If the advanced insect interference event is not triggered within the second interval, the insect repellent is deemed successful. After the insect removal is successful, the trigger count in the counter is reset to zero, and it is determined whether the rice cooker is in the working state. When the rice cooker is not in the working state, the steam generator is turned on to use the steam generated by the steam generator to clean the area where insects are active.

7. An insect repellent device for a rice cooker, characterized in that, The rice cooker includes a pot body and a lid, with an inner pot inside the pot body and a circuit board inside the lid. The rice cooker's insect repellent device includes: The first acquisition module is used to acquire the thermal radiation signal detected by the infrared sensor, wherein the infrared sensor is disposed on the edge of the circuit board or the bottom of the inner liner. The second acquisition module is used to acquire the vibration acceleration signal detected by the vibration sensor, wherein the vibration sensor is disposed below the circuit board; The third acquisition module is used to acquire the current change rate signal detected by the current sensor, wherein the current change rate signal is used to monitor the circuit fluctuation of the power supply line of the circuit board. The insect repellent module is used to determine a low-level insect interference event and initiate a first-level insect repellent response when the thermal radiation signal, the vibration acceleration signal, and the current change rate signal within the same time window are greater than a preset first threshold, respectively.

8. A computer device, characterized in that, include: The rice cooker insect removal method according to any one of claims 1 to 6 is provided with a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions.

9. An electric rice cooker, characterized in that, Includes the computer device as described in claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the rice cooker insect removal method according to any one of claims 1 to 6.

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