High-precision signal mixing control method and device, storage medium and signal mixing equipment

Abstract

The invention is suitable for the technical field of electric signal analysis processing, and provides a high-precision signal mixing control method and device, a storage medium and signal mixing equipment, and the method comprises the steps: obtaining a first voltage signal inputted by a dynamic heat source detection module, and carrying out the signal feature detection of the first voltage signal; when a first trigger signal is detected from the first voltage signal, obtaining an end moment of the trigger signal; acquiring a second voltage signal input by the static heat source detection module; analyzing the second voltage signal to obtain a temperature matrix; and analyzing the temperature matrix, and outputting different state information. The method has the advantages that the basic MCU can process the signal without AI computing power; a common sensor is adopted to execute detection, and a camera and a thermal imager are replaced, so that the hardware cost is remarkably reduced, and the detection precision is high; and the user privacy dispute is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical signal analysis and processing, and in particular relates to a high-precision signal mixing control method, device, storage medium and signal mixing equipment. Background Art

[0002] In recent years, various automated and intelligent monitoring and detection systems have become increasingly common in households. With the increasing number of pet owners, intelligent pet monitoring systems have become an important research area in the pet industry.

[0003] When a pet has health problems, abnormal toileting behavior is often the earliest and most easily observed sign. This is especially true for household pets like cats and dogs, where changes in their excretion habits are often directly related to urinary, digestive, and metabolic diseases. By recording information such as the number and duration of toileting visits, health can be predicted to a certain extent.

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

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

[0006] The purpose of the embodiments of the present application is to provide a high-precision signal mixing control method, which aims to solve the problem that the existing intelligent monitoring equipment capable of monitoring pet toileting behavior has high overall production and manufacturing costs and is expensive, which may be difficult for ordinary pet-raising families to afford and is not conducive to promotion and popularization.

[0007] The embodiment of the present application is implemented by providing a high-precision signal mixing control method, the method comprising: Acquire a first voltage signal input by a dynamic heat source detection module, and perform signal feature detection on the first voltage signal; After detecting a first trigger signal from the first voltage signal, obtaining an end time of the trigger signal; When the received nth trigger signal ends, and the interval after the end time When no new trigger signal is received after the interval time, the static heat source detection module is started to obtain the second voltage signal input by the static heat source detection module; parsing the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module; The temperature matrix is ​​parsed to obtain elements whose measured temperatures exceed a threshold temperature, and the elements are set as high-temperature elements; and different state information is output based on information on changes in the high-temperature elements over time.

[0008] Another object of the embodiments of the present application is to provide a high-precision signal mixing control device, the device comprising: a dynamic signal detection module, configured to obtain a 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, configured to acquire an end time of the trigger signal after detecting the first trigger signal from the first voltage signal; Static signal detection module, used to detect when the received nth trigger signal ends and the interval after the end time When no new trigger signal is received after the interval time, the static heat source detection module is started to obtain the second voltage signal input by the static heat source detection module; a temperature value parsing module, configured to parse the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module; The state output module is used to analyze the temperature matrix, obtain elements whose measured temperatures exceed a threshold temperature, and set them as high-temperature elements; and output different state information based on the change information of the high-temperature elements over time.

[0009] Another object of an embodiment of the present application is to provide a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the processor performs the steps of the high-precision signal mixing control method as described above.

[0010] Another object of an embodiment of the present application is to provide a signal mixing device, comprising 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 as described above.

[0011] A high-precision signal mixing control method provided in an embodiment of the present application has the outstanding advantage that, based on this method, 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 status information; based on this control method, the processor does not need AI computing power, and the basic MCU can process the signal; 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 whole machine can be on standby for several months; a timing design that combines dynamic triggering with static detection is used to accurately match the pet toileting process, with high detection accuracy; no camera or imager is required, avoiding user privacy disputes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 An application environment diagram of a high-precision signal mixing control method provided in an embodiment of the present application; Figure 2 A flow chart of a high-precision signal mixing control method provided in an embodiment of the present application; Figure 3 A working principle diagram of a dynamic heat source detection module provided in an embodiment of the present application; Figure 4 A schematic diagram of a lens provided in an embodiment of the present application; Figure 5 A module diagram of a high-precision signal mixing control device provided in an embodiment of the present application; Figure 6 A module composition diagram of a signal mixing device provided in an embodiment of the present application; Figure 7 FIG. 1 is a block diagram of the internal structure of the electronic data processing terminal 120 in one embodiment. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present 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 only used to explain the present invention and are not intended to limit the present invention.

[0014] It is understood that the terms "first," "second," and the like used herein may be used to describe various elements herein, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first unit or module from another unit or module. For example, a first script may be referred to as a second script, and similarly, a second script may be referred to as a first script without departing from the scope of this application.

[0015] Figure 1This is an application environment diagram of the high-precision signal mixing control method provided in the embodiment of the present application, such as Figure 1 As shown, in this application environment, there are several detection terminals 110 and an electrical data processing terminal 120.

[0016] The electronic data processing terminal 120 can be an independent single chip microcomputer, a control chip, a PID control device, a digital or analog integrated circuit, a microcomputer, etc.

[0017] The detection end 110 can be a temperature sensor, an infrared sensor, an infrared temperature detection array, etc., but is not limited thereto. The detection end 110 and the electrical data processing end 120 can be connected by wires, which is not limited in this application.

[0018] In one embodiment, the detection end is a plurality of detection probes that can be pasted inside the cat litter box, and the electrical data processing end is a single-chip microcomputer, which is used to process the signals detected by the probes, generate feedback information, and then execute the output of the information to the Bluetooth receiving device and LED display device for operation.

[0019] 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 Figure 1 A high-precision signal mixing control method may include the following steps: Step S10: Acquire a first voltage signal input by the dynamic heat source detection module, and perform signal feature detection on the first voltage signal.

[0020] In this embodiment, the dynamic heat source detection module can be a dynamic heat source sensor, motion sensor, or other device used to monitor the presence of moving objects within an area. Preferably, a pyroelectric infrared (PIR) sensor is used. This module is low-cost, has minimal standby time, and is suitable for 24-hour continuous detection. During use, the PIR sensor can be used in conjunction with a Fresnel lens to monitor the area within the litter box.

[0021] In this embodiment, signal signature detection involves monitoring the output voltage and current waveforms of the dynamic heat source detection module. By observing voltage fluctuations and waveforms, it is possible to determine whether a dynamic object has entered the litter box. Compared to an imaging module and its accompanying image processing components, this solution offers lower costs and lower standby power consumption.

[0022] Step S20: After detecting the first trigger signal from the first voltage signal, obtaining the end time of the trigger signal.

[0023] In this embodiment, if Figure 3Figure 2 shows the operating 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, known as a trigger signal. To facilitate detection by the receiving end, the high-level output lasts for a specific duration, known as the REL duration. The interval between each REL can be very short, meaning that even a brief period of sustained motion can cause the sensor to generate multiple trigger signals, facilitating accurate timing.

[0024] The trigger signals output by different types of dynamic heat source detection modules vary slightly, but the principles are similar and will not be further explained here. For example, the output of sensors such as the YS312 and YS312K is 16-bit data serially output on a single pin. This output can be used to determine whether the signal is a trigger signal or an interference signal.

[0025] In this embodiment, each time the processor receives a trigger signal, the start time and / or end time of the trigger may be stored in the memory.

[0026] Step S30: When the received nth trigger signal ends and no new trigger signal is received after an interval of Δt after the end moment, the static heat source detection module is started to obtain a second voltage signal input by the static heat source detection module.

[0027] Step S40 , analyzing the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module.

[0028] In this embodiment, the interval can be selected based on different circumstances and can be several seconds. If no new trigger signal is received after an interval of ∆t after the end time, it means that the pet is no longer active in the area, that is, has left the litter box. At this point, the static heat source detection module is activated to perform detection, eliminating the need for the processor to process multiple channels of information simultaneously, thus reducing hardware performance requirements.

[0029] Preferably, the static heat source detection module adopts a thermopile array, which is composed of several heat source detectors arranged in an array of 8*8, 16*16, etc., and outputs an array temperature information. The temperature of each local position in the cat litter box can be obtained through this sensor. When the sensor works, it can be used in conjunction with Figure 4 The lens shown enables each heat source detector in the array to measure the temperature of a specific area in the litter box. Compared to traditional thermal imaging equipment, this solution is less expensive. The lens shape is not limited.

[0030] Step S50 , analyzing the temperature matrix to obtain elements whose measured temperatures exceed a threshold temperature, setting them as high-temperature elements; and outputting different status information based on information on changes in the high-temperature elements over time.

[0031] In this embodiment, the temperature matrix represents the temperature values ​​of different areas in the cat litter box. By obtaining these temperature data and analyzing the changes in these temperature data over time, such as the temperature diffusion and the temperature value change rate, different pet toilet status information can be obtained.

[0032] Because cat litter exhibits different temperature-time curves when exposed to solid and liquid feces, analyzing this data reveals specific defecation patterns and outputs corresponding status information, such as defecation and urination status. By recording or sending notifications, users can be urged to take appropriate action to prevent prolonged odor.

[0033] In this embodiment, after the system status information is output, the control system may 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.

[0034] In the embodiments of the present application, the advantage is that, based on this method, the processor does not need AI computing power, and the basic MCU can process the signal; the system can use traditional common sensors for detection, such as the combination of PIR and thermopile, to replace cameras and thermal imagers, significantly reducing hardware costs; the low-power dynamic module is always on, and the high-power module works intermittently based on demand, and the whole machine can be on standby for several months; a timing design that combines dynamic triggering with static detection is used to accurately match the pet toilet process and achieve high detection accuracy; there is no need to use cameras or imagers, avoiding user privacy disputes.

[0035] In a preferred embodiment, the method further comprises: Get the start time of the first received trigger signal , get the end time of the received nth trigger signal ; Get the total trigger time of the signal: ; Based on the total trigger time, the duration of the pet's single toilet visit is obtained.

[0036] In this embodiment, the duration of a single toileting visit can be approximated by analyzing the total time a pet spends in the litter box. It is understood that a pet may play in the litter box and not necessarily have defecated during the visit. To prevent pets from briefly leaving and returning, a single toileting visit is considered complete if the interval between consecutive trigger signals is less than a certain preset time.

[0037] In a preferred embodiment, the method for obtaining the threshold temperature is: Let the temperature matrix be P: in, Represents the temperature value of the element in row i and column j; Converting the temperature matrix into a one-dimensional array, and arranging the elements in the one-dimensional array in ascending order to obtain an ascending array; Get the first q elements of an array in ascending order: , and get the threshold temperature: in, is the threshold temperature, is the qth element in the ascending array, is the preset temperature rise.

[0038] In this embodiment of the present application, considering that the heat source of pet excretion only occupies a small area in the cat litter box scene, the lowest temperature area represents the actual ambient background temperature. Based on this method, interference of the heat source on the background temperature estimation can be avoided.

[0039] The sensor is sensitive to temperature rise values, which are preset at different values. When a pet defecates, the local temperature in the litter box rises significantly, and the sensor is sensitive enough to detect even small temperature changes. This method requires no manual calibration and adapts to temperature fluctuations caused by seasonal weather. The q value can be adjusted as needed.

[0040] In a preferred embodiment, the method for outputting different system status information based on the time-varying information of the high-temperature element is: Obtain the preset detection time, obtain the change in the number of the high-temperature elements over time, and perform the following judgment: If the number of the high-temperature elements remains zero within the detection time, first status information is output, where the first status information indicates that the pet has not defecated. If the amount of the high-temperature elements is less than the amount threshold and does not change within the detection time, then outputting second state information, where the second state information is used to indicate that the pet has defecated; If the quantity of the high-temperature elements is higher than the quantity threshold, or lower than the quantity threshold but increases over time within the detection time, third state information is output, and the third state information is used to indicate that the pet has urinated.

[0041] In the embodiment of the present application, the number of high-temperature elements is 0, indicating that the pet has not defecated and is simply playing or burying in the sand. The number of high-temperature areas is less than the threshold and remains constant, indicating that the excrement is solid and its position remains unchanged. The high-temperature areas are small in area and few in number. Because cat litter is hygroscopic and diffusive, the temperature diffuses significantly under the influence of liquid after urination, and the temperature of multiple areas will gradually increase over time; urine affects many areas and a large area. Therefore, based on the number of high-temperature areas and their changing trends over time, the specific excretion situation of the pet can be obtained. This method has precise analysis and high accuracy.

[0042] In a preferred embodiment, the preset detection time and the change of the numerical information of the high-temperature element over time are obtained, and the following judgment is performed: If the temperature value of the high-temperature element decreases at a rate higher than the preset threshold rate and the time it takes to reach the ambient temperature is short (generally within 5 minutes), the second state information is output, indicating solid. If the temperature value of the high-temperature element decreases at a rate lower than the preset threshold rate and the time it takes to reach the ambient temperature is long (generally 10-15 minutes), the third state information is output.

[0043] In the embodiment of the present application, since the specific heat capacity of solids and liquids is greatly different, it is possible to determine whether the excrement is solid or liquid through the above-mentioned refined numerical analysis method.

[0044] In a preferred embodiment, the type of excrement can also be obtained through modeling. The values ​​of high-temperature elements corresponding to solid excrement generally satisfy the following relationship: in, is the temperature of the high-temperature element; is the ambient temperature; Take your pet's temperature; is the cooling coefficient, for example, 0.02–0.05s⁻¹. Values ​​that closely follow the temperature-time pattern of the above function can be considered solid excrement. Otherwise, they correspond to liquid excrement.

[0045] like Figure 5 As shown, in one embodiment, a high-precision signal mixing control device is provided. The high-precision signal mixing control device can be integrated into the above-mentioned electrical data processing terminal 120, and specifically may include: A dynamic signal detection module 510 is configured to obtain a 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 520, configured to acquire an end time of the trigger signal after detecting the first trigger signal from the first voltage signal; Static signal detection module 530, used for when the received nth trigger signal ends and the interval after the end time is When no new trigger signal is received after the interval time, the static heat source detection module is started to obtain the second voltage signal input by the static heat source detection module; a temperature value analyzing module 540 configured to analyze the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module; The state output module 550 is used to analyze the temperature matrix, obtain elements whose measured temperatures exceed a threshold temperature, and set them as high-temperature elements; and output different state information based on the change information of the high-temperature elements over time.

[0046] In the embodiments of the present application, for the explanation and description of the above-mentioned high-precision signal mixing control device, reference may be made to the explanation and description of the above-mentioned corresponding method. For the description of the high-precision signal mixing control method, please refer to the above text and will not be repeated here.

[0047] In the embodiment of the present application, the advantage of this device is that 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 status information; based on this control method, the processor does not need AI computing power, and the basic MCU can process the signal; the system can use common sensors to perform detection, replacing cameras and thermal imagers, which significantly reduces 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 whole machine can be on standby for several months; a timing design that combines dynamic triggering with static detection is used to accurately match the pet's toileting process, and the detection accuracy is high; there is no need to use cameras or imagers, avoiding user privacy disputes.

[0048] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor executes the steps of the high-precision signal mixing control method as described above.

[0049] In the embodiment of the present application, for the description of the above-mentioned high-precision signal mixing control method, please refer to the above text and will not be repeated here.

[0050] In the embodiment of the present application, the program run based on the method stored in the storage medium of the embodiment of the present application has the advantage that 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 status information; based on this control method, the processor does not need AI computing power, and the basic MCU can process the signal; the system can use common sensors to perform detection, replacing cameras and thermal imagers, which significantly reduces 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 whole machine can be on standby for several months; a timing design that combines dynamic triggering with static detection is used 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.

[0051] like Figure 6 As shown, in one embodiment, a signal mixing device is provided, including a memory and a processor, wherein a computer program is stored in the memory, 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.

[0052] In the embodiment of the present application, the device may be a control chip and its accompanying memory, or a single chip microcomputer, etc. For the description of the high-precision signal mixing control method, please refer to the above and will not be repeated here.

[0053] In the embodiment of the present application, the advantage of this system is that 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 status information; based on this control method, the processor does not need AI computing power, and the basic MCU can process the signal; 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 whole machine can be on standby for several months; a timing design that combines dynamic triggering with static detection is used to accurately match the pet's toileting process, and the detection accuracy is high; there is no need to use cameras or imagers, avoiding user privacy disputes.

[0054] In a preferred embodiment, the device further comprises: The dynamic detection module is used to detect whether there are moving objects in the cat litter box area; Static measurement module, used to measure the temperature of the cat litter box area; The signal output module is used to output the status information, including a wireless signal output module and / or an LED signal output module.

[0055] In a preferred embodiment, the LED signal output module includes a plurality of LED indicator lights for displaying different status information; The dynamic detection module is a pyroelectric infrared sensor, and the static measurement module is a thermopile array.

[0056] 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 multiple detection probes. The signal output module can be a Bluetooth output module, a Wi-Fi module, or the like, which can connect to a mobile device or network host. Alternatively, it can be a number of LED indicators integrated into a chip or circuit. For example, three LED indicators can indicate three status information output by the system, indicating the real-time status of the litter box.

[0057] Figure 7 FIG. 1 shows an internal structure diagram of an electronic data processing terminal 120 in one embodiment. The electronic data processing terminal 120 may be a microcomputer device. Figure 7 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program that, when executed by the processor, enables the processor to implement a high-precision signal mixing control method. The internal memory may also store a computer program that, when executed by the processor, enables the processor to implement the high-precision signal mixing control method. The computer device may also include a liquid crystal display, an input device, and the like.

[0058] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the device to which the solution of the present application is applied. The specific device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0059] In one embodiment, the high-precision signal mixing control device provided by the present application can be implemented in the form of a computer program. The computer program can be used in Figure 7 The memory of the device can store various program modules that constitute the high-precision signal mixing control device, such as, Figure 5 The computer program composed of the dynamic signal detection module 510, the trigger signal acquisition module 520, etc. shown in the figure enables the processor to execute the steps of the high-precision signal mixing control method of each embodiment of the present application described in this specification.

[0060] For example, Figure 7 The device shown can be Figure 5 The dynamic signal detection module 510 in the high-precision signal mixing control device shown executes step S10, and the trigger signal acquisition module 520 executes step S20, and so on.

[0061] It should be understood that, although each step in the flow chart of each embodiment of the present application is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is clear explanation in this article, the execution of these steps does not have strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0062] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When executed, the program can include the processes of the above-described method embodiments. Any reference to memory, storage, database, or other media used in the various embodiments provided herein may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may 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), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct RAMbus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM).

[0063] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0064] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high-precision signal mixing control method, characterized in that: The method comprises: Acquire a first voltage signal input by a dynamic heat source detection module, and perform signal feature detection on the first voltage signal; After detecting a first trigger signal from the first voltage signal, obtaining an end time of the trigger signal; When the received nth trigger signal ends, and the interval after the end time When no new trigger signal is received after the interval time, the static heat source detection module is started to obtain the second voltage signal input by the static heat source detection module; parsing the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module; The temperature matrix is ​​parsed to obtain elements whose measured temperatures exceed a threshold temperature, and the elements are set as high-temperature elements; and different state information is output based on information on changes in the high-temperature elements over time.

2. A high-precision signal mixing control method according to claim 1, characterized in that: The method further comprises: Get the start time of the first received trigger signal , get the end time of the received nth trigger signal ; Get the total trigger time of the signal: ; Based on the total trigger time, the duration of the pet's single toilet visit 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: Let the temperature matrix be P: in, Represents the temperature value of the element in row i and column j; Converting the temperature matrix into a one-dimensional array, and arranging the elements in the one-dimensional array in ascending order to obtain an ascending array; Get the first q elements of an array in ascending order: , and get the threshold temperature: in, is the threshold temperature, is the qth element in the ascending array, is the preset temperature rise.

4. The high-precision signal mixing control method according to claim 1, characterized in that: Based on the time-varying information of the high-temperature elements, the method of outputting different system status information is as follows: Obtain the preset detection time, obtain the change in the number of the high-temperature elements over time, and perform the following judgment: If the number of the high-temperature elements remains zero within the detection time, first status information is output, where the first status information indicates that the pet has not defecated. If the amount of the high-temperature elements is less than the amount threshold and does not change within the detection time, then outputting second state information, where the second state information is used to indicate that the pet has defecated; If the quantity of the high-temperature elements is higher than the quantity threshold, or lower than the quantity threshold but increases over time within the detection time, third state information is output, and the third state information is used to indicate that the pet has urinated.

5. A high-precision signal mixing control method according to claim 4, 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 temperature value drop rate of the high-temperature element is higher than the preset threshold rate, the second state information is output; If the temperature value decreasing rate of the high-temperature element is lower than the preset threshold rate, the third state information is output.

6. A high-precision signal mixing control device, characterized in that: The device comprises: a dynamic signal detection module, configured to obtain a 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, configured to acquire an end time of the trigger signal after detecting the first trigger signal from the first voltage signal; Static signal detection module, used to detect when the received nth trigger signal ends and the interval after the end time When no new trigger signal is received after the interval time, the static heat source detection module is started to obtain the second voltage signal input by the static heat source detection module; a temperature value parsing module, configured to parse the second voltage signal to obtain a temperature matrix, wherein each element in the temperature matrix is ​​a temperature value detected by a heat source detector in the static heat source detection module; The state output module is used to analyze the temperature matrix, obtain elements whose measured temperatures exceed a threshold temperature, and set them as high-temperature elements; and output different state information based on the change information of the high-temperature elements over time.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is caused to perform the steps of the high-precision signal mixing control method according to any one of claims 1 to 5.

8. A signal mixing device, characterized in that: The method comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the high-precision signal mixing control method according to any one of claims 1 to 5.

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

10. The signal mixing device according to claim 9, characterized in that: The LED signal output module includes a plurality of LED indicator lights for displaying 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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