A high-precision signal mixing control method and device, a storage medium and a signal mixing device

Abstract

The application is suitable for the technical field of electric signal analysis processing, and provides a high-precision signal mixing control method, device, storage medium and signal mixing equipment.The method comprises the following steps: acquiring a first voltage signal input by a dynamic heat source detection module, and performing signal feature detection on the first voltage signal; acquiring an ending moment of a first trigger signal after the first trigger signal is detected from the first voltage signal; acquiring a second voltage signal input by a static heat source detection module; analyzing the second voltage signal to obtain a temperature matrix; and analyzing the temperature matrix to output different state information.The application has the advantages that: the signal can be processed by a basic MCU without AI computing power; common sensors are used for detection, replacing cameras and thermal imagers, so that the hardware cost is significantly reduced, the detection precision is high, and user privacy disputes are avoided.

Description

Technical Field

[0001] This invention belongs to the field of electrical signal analysis and processing technology, and particularly relates to a high-precision signal mixing control method, device, storage medium and signal mixing equipment. Background Technology

[0002] In recent years, various automated and intelligent monitoring and detection systems have gradually become common in homes. With the increase in the number of pet owners, intelligent monitoring systems for pets have become an important research direction in the pet industry.

[0003] When pets experience health problems, abnormal toileting behavior is often the earliest and most easily observed signal, especially for domestic pets such as cats and dogs. Changes in their elimination habits are often directly related to urinary, digestive, and metabolic diseases. Recording information such as the frequency and timing of toileting can provide some degree of predictive insight into their health.

[0004] Currently, the devices on the market that can monitor pet behavior and health include specialized smart pet toilets and smart litter boxes. These devices typically monitor pets' toilet habits by acquiring signals from numerous integrated sensors, such as weight sensors, visual cameras, infrared imaging sensors, and motion sensors, and then performing comprehensive information analysis.

[0005] However, most of the aforementioned intelligent monitoring devices utilize imaging systems and corresponding image processing units. These components are costly to manufacture and expensive, making them unaffordable for ordinary pet-owning families and hindering their widespread adoption. Therefore, it is necessary to provide a low-cost detection method and system that can achieve health monitoring based on data from traditional, inexpensive sensors. Summary of the Invention

[0006] The purpose of this application is to provide a high-precision signal mixing control method, which aims to solve the problem that the existing intelligent monitoring devices capable of monitoring pet toilet behavior have high overall manufacturing costs and are expensive, making them unaffordable for most pet-owning families and hindering their promotion and popularization.

[0007] This application provides a high-precision signal mixing control method, the method comprising:

[0008] Acquire the first voltage signal input from the dynamic heat source detection module, and perform signal feature detection on the first voltage signal;

[0009] After the first trigger signal is detected from the first voltage signal, the end time of the trigger signal is obtained;

[0010] When the nth trigger signal is received, and the interval after the end time is... If no new trigger signal is received after the interval, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module.

[0011] The second voltage signal is analyzed to obtain a temperature matrix, where each element of the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module.

[0012] The temperature matrix is ​​analyzed to obtain the elements whose measured temperature exceeds the threshold temperature, and these are designated as high-temperature elements. Based on the change information of the high-temperature elements over time, different state information is output.

[0013] Another objective of this application is to provide a high-precision signal mixing control device, the device comprising:

[0014] The dynamic signal detection module is used to acquire the first voltage signal input by the dynamic heat source detection module and perform signal feature detection on the first voltage signal;

[0015] A trigger signal acquisition module is used to acquire the end time of the trigger signal after detecting the first trigger signal from the first voltage signal;

[0016] The static signal detection module is used to detect when the nth trigger signal is received and the interval after the end time is reached. If no new trigger signal is received after the interval, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module.

[0017] The temperature value analysis module is used to analyze the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module.

[0018] The status output module is used to parse the temperature matrix to obtain the elements whose measured temperature exceeds the threshold temperature and set them as high-temperature elements; based on the change information of the high-temperature elements over time, different status information is output.

[0019] Another objective of this application is to provide a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to perform the steps of the high-precision signal mixing control method described above.

[0020] Another objective of this application is to provide a signal mixing device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the high-precision signal mixing control method described above.

[0021] The high-precision signal hybrid control method provided in this application has the following key advantages: Based on this method, the processor can receive and process input signals from multiple different sensors and perform hybrid control on the system based on these signals, enabling the system to output different state information. Based on this control method, the processor does not require AI computing power; a basic MCU can process the signals. The system can use common sensors to perform detection, replacing cameras and thermal imagers, significantly reducing hardware costs. By controlling the low-power dynamic module to be always on and the high-power module to work intermittently based on demand, energy consumption is significantly reduced, and the entire machine can remain in standby mode for several months. The timing design, which combines dynamic triggering and static detection, accurately matches the pet's toileting process, resulting in high detection accuracy. It eliminates the need for cameras or imagers, avoiding potential user privacy disputes. Attached Figure Description

[0022] Figure 1 An application environment diagram for a high-precision signal mixing control method provided in this application embodiment;

[0023] Figure 2 A flowchart illustrating a high-precision signal mixing control method provided in this application embodiment;

[0024] Figure 3 A schematic diagram illustrating the working principle of a dynamic heat source detection module provided in this application embodiment;

[0025] Figure 4 A schematic diagram of a lens provided in an embodiment of this application;

[0026] Figure 5 A block diagram of a high-precision signal mixing control device provided in an embodiment of this application;

[0027] Figure 6 A module composition diagram of a signal mixing device provided in an embodiment of this application;

[0028] Figure 7 This is a block diagram of the internal structure of the electrical data processing terminal 120 in one embodiment. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish the first unit or module from another unit or module. For example, without departing from the scope of this application, the first script may be referred to as the second script, and similarly, the second script may be referred to as the first script.

[0031] Figure 1 An application environment diagram for the high-precision signal mixing control method provided in the embodiments of this application is shown below. Figure 1 As shown, in this application environment, there are several detection terminals 110 and electrical data processing terminals 120.

[0032] The electrical data processing terminal 120 can be an independent microcontroller, control chip, PID control device, or digital or analog integrated circuit, microcomputer, etc.

[0033] The detection terminal 110 can be a temperature sensor, an infrared sensor, an infrared temperature detection array, etc., but is not limited to these. The detection terminal 110 and the electrical data processing terminal 120 can be connected by wires, which is not limited in this application.

[0034] In one embodiment, the detection end consists of several detection probes that can be attached inside the litter box, and the electrical data processing end is a microcontroller used to process the signals detected by the probes, generate feedback information, and then execute operations to output the information to a Bluetooth receiving device and an LED display device.

[0035] like Figure 2 As shown, in one embodiment, a high-precision signal mixing control method is proposed. This embodiment mainly applies this method to the above-mentioned... Figure 1 Taking the electrical data processing terminal 120 as an example, a high-precision signal mixing control method may specifically include the following steps:

[0036] Step S10: Obtain the first voltage signal input from the dynamic heat source detection module, and perform signal feature detection on the first voltage signal.

[0037] In this embodiment, the dynamic heat source detection module can be a dynamic heat source sensor, motion sensor, etc., used to monitor the presence of moving objects within a certain area. Preferably, a pyroelectric infrared sensor (PIR) is used, which is low in cost, has low standby power, and is suitable for continuous 24-hour detection. In use, the PIR sensor can be used in conjunction with a Fresnel lens to detect the area inside the litter box.

[0038] In this embodiment, signal feature detection refers to detecting the waveforms of the output voltage and current of the dynamic heat source detection module. By observing information such as voltage fluctuations and voltage waveforms, it can be determined whether a dynamic object has entered the litter box area. Compared to the imaging module and its supporting image processing components, this solution has lower cost and lower standby power consumption.

[0039] Step S20: After the first trigger signal is detected from the first voltage signal, the end time of the trigger signal is obtained.

[0040] In this embodiment, as Figure 3 The diagram shows the working principle of a dynamic heat source detection module. When the module detects the presence and movement of a heat source, it outputs a high-level signal, i.e., a trigger signal. To facilitate monitoring by the receiving end, the high-level output is maintained for a certain period of time, which is the REL duration. The interval between each REL can be very short, meaning that even a brief, continuous movement can cause the sensor to generate multiple trigger signals for accurate timing.

[0041] The trigger signals output by different types of dynamic heat source detection modules vary slightly, but the principle is similar to that described above, so they will not be repeated here. For example, for sensors such as YS312 and YS312K, the output is a 16-bit data output serially from a single pin. Based on the output, it can be determined whether the signal is a trigger signal or an interference signal.

[0042] In this embodiment, each time the processor receives a trigger signal, it can store the start time and / or end time of the trigger in the memory.

[0043] Step S30: When the nth trigger signal is received and no new trigger signal is received after an interval of ∆t after the end time, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module.

[0044] Step S40: Analyze the second voltage signal to obtain a temperature matrix, where each element in the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module.

[0045] In this embodiment, the interval time can be selected according to different situations, and can be several seconds. If no new trigger signal is received after an interval of ∆t after the end time, it means that there is no longer any pet activity in the area, i.e., the pet has left the litter box. At this point, the static heat source detection module is restarted to perform detection. The processor does not need to process multiple channels of information simultaneously, resulting in low hardware performance requirements.

[0046] Preferably, the static heat source detection module employs a thermopile array, which consists of several heat source detectors arranged in an 8*8, 16*16, or similar array configuration, outputting array temperature information. This sensor can obtain the temperature of various local locations within the litter box. When the sensor is working, it can be used in conjunction with... Figure 4 The lens shown allows each heat source detector in the array to measure the temperature of a specific area within the litter box. This solution is less expensive than traditional thermal imaging devices. The shape of the lens is not limited.

[0047] Step S50: Analyze the temperature matrix to obtain the elements whose measured temperature exceeds the threshold temperature, and set them as high-temperature elements; based on the change information of the high-temperature elements over time, output different state information.

[0048] In this embodiment, the temperature matrix represents the temperature values ​​of different areas within the litter box. By acquiring this temperature data and analyzing how it changes over time, such as the diffusion of temperature and the rate of change of temperature values, information on different pet toilet habits can be obtained.

[0049] Because cat litter exhibits different temperature-time curves depending on whether feces are solid or liquid, analyzing this data can reveal specific defecation patterns and generate corresponding status information, such as defecation and urination details. By recording or sending notifications to this information, users can be prompted to address the issue and prevent odors from lingering.

[0050] In this embodiment, after the system status information is output, the control system can also perform initialization, shut down the static heat source detection module, start the dynamic heat source detection module, and perform the next round of detection.

[0051] In this embodiment, the advantages are as follows: based on this method, the processor does not require AI computing power, and a basic MCU can process the signal; the system can use traditional common sensors for detection, such as a combination of PIR and thermopile, to replace cameras and thermal imagers, significantly reducing hardware costs; the low-power dynamic module is always on, while the high-power module works intermittently based on demand, allowing the entire machine to standby for several months; the timing design that combines dynamic triggering and static detection accurately matches the pet's toileting process, resulting in high detection accuracy; and there is no need to use cameras or imagers, avoiding user privacy disputes.

[0052] In a preferred embodiment, the method further includes:

[0053] Obtain the start time of the first received trigger signal. Obtain the end time of the received nth trigger signal. ;

[0054] Total signal trigger time: ;

[0055] Based on the total trigger time, the duration of a single toilet visit by the pet is obtained.

[0056] In this embodiment, based on the analysis of the total time the pet spends in the litter box, the time for a single toilet visit can be approximated. It is understood that since the pet may play in the litter box, it may not necessarily defecate while using it. To prevent the pet from briefly leaving and then returning, the interval between adjacent trigger signals is considered to be less than a certain preset time when a single toilet visit is considered complete.

[0057] In a preferred embodiment, the method for obtaining the threshold temperature is as follows:

[0058] Let the temperature matrix be P:

[0059]

[0060] in, This represents the temperature value of the element in the i-th row and j-th column.

[0061] The temperature matrix is ​​converted into a one-dimensional array, and the elements in the one-dimensional array are sorted in ascending order to obtain an ascending array.

[0062] Get the first q elements of an ascending array: The threshold temperature is obtained as follows:

[0063]

[0064] in, Threshold temperature, The q-th element in the ascending array. This is the preset temperature rise.

[0065] In this embodiment, considering that the heat source from pet excrement only occupies a small area in the litter box scenario, the lowest temperature area represents the true ambient background temperature. This method avoids interference from the heat source on the background temperature estimation.

[0066] The system uses preset temperature rise values, each with different sensitivities. After a pet defecates, the local temperature rise in the litter box increases significantly, and the sensor can sensitively detect even minute temperature changes. This method requires no manual calibration and adapts to temperature variations caused by seasonal weather. The q-value can be set as needed.

[0067] In a preferred embodiment, the method for outputting different system state information based on the change information of the high-temperature element over time is as follows:

[0068] Obtain the preset detection duration, obtain the change in the quantity of the high-temperature element over time, and perform the following judgment:

[0069] If the number of high-temperature elements remains zero during the detection period, a first state information is output, which indicates that the pet has not excreted.

[0070] If the number of the high-temperature element is less than the quantity threshold and does not change during the detection period, then the second state information is output, which is used to characterize that the pet has defecate.

[0071] If, within the detection period, the number of high-temperature elements is higher than the quantity threshold, or lower than the quantity threshold but the quantity increases over time, then third state information is output, which is used to characterize that the pet has urinated.

[0072] In this embodiment, the number of high-temperature elements is 0, indicating that the pet has not excreted and is simply playing or burying in the litter box. The number of high-temperature areas is less than the threshold and remains constant, indicating that the excrement is solid, its position is fixed, and the high-temperature areas are small and few in number. Because cat litter has hygroscopic and diffusive properties, the temperature diffuses significantly after urination due to the influence of the liquid, and the temperature in multiple areas gradually increases over time; the urine affects many areas, covering a large area. Therefore, the specific excretion situation of the pet can be obtained based on the number of high-temperature areas and their changing trend over time. This method is precise and has a high accuracy rate.

[0073] In a preferred embodiment, the preset detection duration and the change of the numerical information of the high-temperature element over time are obtained, and the following judgment is performed:

[0074] If the temperature of a high-temperature element decreases at a rate higher than the preset threshold rate and the time it takes to approach the ambient temperature is short (generally within 5 minutes), then the second state information is output, indicating a solid state. If the temperature of a high-temperature element decreases at a rate lower than the preset threshold rate and the time it takes to approach the ambient temperature is long (generally 10-15 minutes), then the third state information is output.

[0075] In the embodiments of this application, since the specific heat capacity of solids and liquids differs greatly, the type of excrement, whether solid or liquid, can be determined by the above-mentioned refined numerical analysis.

[0076] In a preferred embodiment, the type of excrement can also be obtained through modeling. The values ​​of the high-temperature elements corresponding to solid excrement generally satisfy the following relationship:

[0077]

[0078] in, The temperature of a high-temperature element; Ambient temperature; Take the pet's body temperature; This is the cooling coefficient, for example, 0.02–0.05 s⁻¹. Values ​​that exhibit a similar temperature-time variation with the above function can be identified as corresponding solid waste. Otherwise, they are liquid waste.

[0079] like Figure 5 As shown, in one embodiment, a high-precision signal mixing control device is provided. This high-precision signal mixing control device can be integrated into the aforementioned electrical data processing terminal 120, and specifically may include:

[0080] The dynamic signal detection module 510 is used to acquire the first voltage signal input by the dynamic heat source detection module and perform signal feature detection on the first voltage signal;

[0081] The trigger signal acquisition module 520 is used to acquire the end time of the trigger signal after detecting the first trigger signal from the first voltage signal;

[0082] The static signal detection module 530 is used to detect when the nth received trigger signal ends, and after an interval of time... If no new trigger signal is received after the interval, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module.

[0083] Temperature value analysis module 540 is used to analyze the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module.

[0084] The status output module 550 is used to parse the temperature matrix to obtain the elements whose measured temperature exceeds the threshold temperature and set them as high-temperature elements; based on the change information of the high-temperature elements over time, it outputs different status information.

[0085] In the embodiments of this application, the explanation and description of the above-mentioned high-precision signal mixing control device can be referred to the explanation and description of the corresponding method above. For the description of the high-precision signal mixing control method, please refer to the above text, which will not be repeated here.

[0086] In this embodiment, the advantages of this device are: the processor can receive and process input signals from multiple different sensors and perform mixed control of the system based on these signals, enabling the system to output different state information; based on this control method, the processor does not require AI computing power, and a basic MCU can process the signals; the system can use common sensors to perform detection, replacing cameras and thermal imagers, significantly reducing hardware costs; by controlling the low-power dynamic module to be always on and the high-power module to work intermittently based on demand, energy consumption is significantly reduced, and the entire device can standby for several months; the timing design that combines dynamic triggering and static detection accurately matches the pet toileting process, resulting in high detection accuracy; and the elimination of the need for cameras or imagers avoids user privacy disputes.

[0087] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, causes the processor to perform the steps of the high-precision signal mixing control method described above.

[0088] In the embodiments of this application, the description of the above-mentioned high-precision signal mixing control method is as described above, and will not be repeated here.

[0089] In this application embodiment, the program running based on the method stored in the storage medium of this application embodiment has the following advantages: the processor can receive and process input signals from multiple different sensors, and perform mixed control of the system based on these signals, so that the system outputs different state information; based on this control method, the processor does not require AI computing power, and a basic MCU can process the signals; the system can use common sensors to perform detection, replacing cameras and thermal imagers, significantly reducing hardware costs; by controlling the low-power dynamic module to be always on and the high-power module to work intermittently based on demand, energy consumption is significantly reduced, and the standby time of the whole machine can reach several months; the timing design of dynamic triggering and static detection is adopted to accurately match the pet toilet process, and the detection accuracy is high; there is no need to use cameras or imagers, avoiding user privacy disputes.

[0090] like Figure 6 As shown, in one embodiment, a signal mixing device is provided, including a memory and a processor. The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of the high-precision signal mixing control method as described above.

[0091] In this embodiment, the device can be a control chip and its associated memory, or a microcontroller, etc. For a description of the high-precision signal mixing control method described above, please refer to the preceding text; it will not be repeated here.

[0092] In this embodiment, the advantages of this system are: the processor can receive and process input signals from multiple different sensors and perform mixed control of the system based on these signals, enabling the system to output different state information; based on this control method, the processor does not require AI computing power, and a basic MCU can process the signals; the system can use common sensors to perform detection, replacing cameras and thermal imagers, significantly reducing hardware costs; by controlling the low-power dynamic module to be always on and the high-power module to work intermittently based on demand, energy consumption is significantly reduced, and the entire machine can standby for several months; the timing design that combines dynamic triggering and static detection accurately matches the pet toileting process, resulting in high detection accuracy; and the elimination of the need for cameras or imagers avoids user privacy disputes.

[0093] In a preferred embodiment, the device further includes:

[0094] The dynamic detection module is used to detect whether there are moving objects in the litter box area;

[0095] The static measurement module is used to measure the temperature in the litter box area.

[0096] A signal output module is used to output the status information, including a wireless signal output module and / or an LED signal output module.

[0097] In a preferred embodiment, the LED signal output module includes a plurality of LED indicator lights for displaying different status information;

[0098] The dynamic detection module is a pyroelectric infrared sensor, and the static measurement module is a thermopile array.

[0099] In this embodiment, the dynamic detection module can output a first voltage signal, and the static measurement module can output a second voltage signal; both are detectors containing several detection probes. The signal output module can be a Bluetooth output module, a Wi-Fi module, etc., which can connect to a mobile device or network host, or it can be several LED indicator lights integrated on a chip or circuit. For example, three LED indicator lights can respectively indicate three status information output by the system, indicating the real-time status inside the litter box.

[0100] Figure 7 An internal structural diagram of an electrical data processing terminal 120 in one embodiment is shown. This electrical data processing terminal 120 can be a microcomputer device. Figure 7As shown, the computer device includes a processor, memory, and network interface connected via a system bus. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores an operating system and may also store computer programs. When executed by the processor, these computer programs enable the processor to implement a high-precision signal mixing control method. The internal memory may also store computer programs, which, when executed by the processor, enable the processor to implement the high-precision signal mixing control method. The computer device may also include a liquid crystal display screen, input devices, etc.

[0101] Those skilled in the art will understand that Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the device to which the present application is applied. Specific devices may include more or fewer components than those shown in the figure, or may combine certain components, or may have different component arrangements.

[0102] In one embodiment, the high-precision signal mixing control device provided in this application can be implemented as a computer program, and the computer program can be implemented in the form of, for example, Figure 7 The device shown operates on this device. The device's memory can store the various program modules that make up this high-precision signal mixing control device, for example... Figure 5 The dynamic signal detection module 510 and trigger signal acquisition module 520 shown are examples of this. The computer program, comprised of these modules, causes the processor to execute the steps of the high-precision signal mixing control method described in the various embodiments of this application.

[0103] For example, Figure 7 The device shown can be used as follows Figure 5 The dynamic signal detection module 510 in the high-precision signal mixing control device shown executes step S10. Step S20 can be executed by the trigger signal acquisition module 520. And so on.

[0104] It should be understood that although the steps in the flowcharts of the various embodiments of this application are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in each embodiment may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0105] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A high-precision signal mixing control method, characterized in that, The method includes: Acquire the first voltage signal input from the dynamic heat source detection module, and perform signal feature detection on the first voltage signal; After the first trigger signal is detected from the first voltage signal, the end time of the trigger signal is obtained; When the nth trigger signal is received, and the interval after the end time is... If no new trigger signal is received after the interval, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module. The second voltage signal is analyzed to obtain a temperature matrix, where each element of the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module. The temperature matrix is ​​analyzed to obtain the elements whose measured temperature exceeds the threshold temperature, and these are designated as high-temperature elements. Based on the change information of the high-temperature elements over time, different state information is output. The method for outputting different system state information based on the change information of the high-temperature element over time is as follows: Obtain the preset detection duration, obtain the change in the quantity of the high-temperature element over time, and perform the following judgment: If the number of high-temperature elements remains zero during the detection period, a first state information is output, which indicates that the pet has not excreted. If the number of the high-temperature element is less than the quantity threshold and does not change during the detection period, then the second state information is output, which is used to characterize that the pet has defecate. If, within the detection period, the number of high-temperature elements is higher than the quantity threshold, or lower than the quantity threshold but the quantity increases over time, then third state information is output, which is used to characterize that the pet has urinated.

2. The high-precision signal mixing control method according to claim 1, characterized in that, The method further includes: Obtain the start time of the first received trigger signal. Obtain the end time of the received nth trigger signal. ; Total signal trigger time: ; Based on the total trigger time, the duration of a single toilet visit by the pet is obtained.

3. The high-precision signal mixing control method according to claim 1, characterized in that, The method for obtaining the threshold temperature is as follows: Let the temperature matrix be P: in, This represents the temperature value of the element in the i-th row and j-th column. The temperature matrix is ​​converted into a one-dimensional array, and the elements in the one-dimensional array are sorted in ascending order to obtain an ascending array. Get the first q elements of an ascending array: The threshold temperature is obtained as follows: in, Threshold temperature, The q-th element in the ascending array. This is the preset temperature rise.

4. The high-precision signal mixing control method according to claim 1, characterized in that, The method further includes obtaining the change of the numerical information of the high-temperature element over time, and performing the following judgment: If the rate at which the temperature of a high-temperature element decreases exceeds a preset threshold rate, then output the second state information. If the rate at which the temperature of a high-temperature element decreases is lower than a preset threshold rate, then the third state information is output.

5. A high-precision signal mixing control device, characterized in that, The device includes: The dynamic signal detection module is used to acquire the first voltage signal input by the dynamic heat source detection module and perform signal feature detection on the first voltage signal; A trigger signal acquisition module is used to acquire the end time of the trigger signal after detecting the first trigger signal from the first voltage signal; The static signal detection module is used to detect when the nth trigger signal is received and the interval after the end time is reached. If no new trigger signal is received after the interval, the static heat source detection module is activated to obtain the second voltage signal input by the static heat source detection module. The temperature value analysis module is used to analyze the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​the temperature value detected by a heat source detector in the static heat source detection module. The status output module is used to parse the temperature matrix to obtain the elements whose measured temperature exceeds the threshold temperature and set them as high-temperature elements; based on the change information of the high-temperature elements over time, different status information is output. The method for outputting different system state information based on the change information of the high-temperature element over time is as follows: Obtain the preset detection duration, obtain the change in the quantity of the high-temperature element over time, and perform the following judgment: If the number of high-temperature elements remains zero during the detection period, a first state information is output, which indicates that the pet has not excreted. If the number of the high-temperature element is less than the quantity threshold and does not change during the detection period, then the second state information is output, which is used to characterize that the pet has defecate. If, within the detection period, the number of high-temperature elements is higher than the quantity threshold, or lower than the quantity threshold but the quantity increases over time, then third state information is output, which is used to characterize that the pet has urinated.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, causes the processor to perform the steps of the high-precision signal mixing control method as described in any one of claims 1 to 4.

7. A signal mixing device, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor causes the processor to perform the steps of the high-precision signal mixing control method as described in any one of claims 1 to 4.

8. A signal mixing device according to claim 7, characterized in that, The device also includes: The dynamic detection module is used to detect whether there are moving objects in the litter box area; The static measurement module is used to measure the temperature in the litter box area. A signal output module is used to output the status information, including a wireless signal output module and / or an LED signal output module.

9. A signal mixing device according to claim 8, characterized in that, The LED signal output module contains several LED indicator lights, which are used to display different status information; The dynamic detection module is a pyroelectric infrared sensor, and the static measurement module is a thermopile array.

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