Detection system and detection method for low-altitude flight target and electronic equipment

Abstract

The invention provides a low-altitude flight target detection system, a detection method and electronic equipment. The detection system comprises an electrostatic inductor, an acquisition circuit and a processing unit, the electrostatic sensor is used for sensing an electrostatic signal in the preset space; the acquisition circuit is used for acquiring an electrostatic signal induced by the electrostatic inductor; the input end of the processing unit is electrically connected with the output end of the acquisition circuit, and is used for determining whether a low-altitude flight target exists in the preset space according to the electrostatic signal. The electrostatic inductor is manufactured according to the electrostatic electrification and discharge rule to induce the electrostatic signals generated by the low-altitude flying target in the flying process, the electrostatic signals are collected through the collection circuit, and the processing unit can judge whether the low-altitude flying target exists in the current preset space or not according to the collection condition of the electrostatic signals. The detection principle is simple and easy to realize, meanwhile, static detection is passive detection without reflection, so that the problem of a near-field blind area does not exist, and the detection accuracy is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the field of detection technology, and in particular to a detection system, a detection method and electronic equipment for low-altitude flying targets. Background Art

[0002] At present, when radar detects flying targets such as drones, it can accurately detect them at higher altitudes, but low altitudes (below 100 meters, or even below 200 meters) or close distances (within 100 meters) are blind spots for radar, and it is impossible to accurately detect flying targets. Drones that fly very slowly or even hover cannot be detected by radar because the Doppler effect of electromagnetic waves cannot be used. In addition, drones made of non-metallic materials such as polymer materials such as plastics are also difficult to detect by radar because of their small electromagnetic wave reflection cross-section. Therefore, there is an urgent need to develop a technology that can accurately sense and detect targets such as drones or missiles flying at low altitudes or close distances. Summary of the invention

[0003] The purpose of the embodiments of the present disclosure is to provide a low-altitude flying target detection system, detection method and electronic equipment to solve the problem that low-altitude flying targets cannot be accurately sensed and detected in the prior art.

[0004] The embodiments of the present disclosure adopt the following technical solutions: a low-altitude flying target detection system, comprising: an electrostatic sensor, a collection circuit and a processing unit; wherein the electrostatic sensor is configured to sense an electrostatic signal in a preset space; the input end of the collection circuit is electrically connected to the electrostatic sensor, and is configured to collect the electrostatic signal induced on the electrostatic sensor; the input end of the processing unit is electrically connected to the output end of the collection circuit, and is configured to determine whether there is a low-altitude flying target in the preset space according to the electrostatic signal.

[0005] In some embodiments, the electrostatic sensor includes at least: an electrostatic induction probe and a support; wherein the electrostatic induction probe is made of a conductor or an electrostatic conductor, one end of the support is connected to the electrostatic induction probe, and the other end of the support is connected to a preset support surface in the preset space.

[0006] In some embodiments, the processing unit is specifically configured to: pre-process the electrostatic signal; convert the pre-processed electrostatic signal into a digital signal; and determine whether there is a low-flying target in the preset space based on the digital signal.

[0007] In some embodiments, the processing unit is specifically configured to: compare the digital signal with a background threshold; when the digital signal is less than the background threshold, determine that there is no low-flying target in the preset space, and continue to drive the acquisition circuit to collect the electrostatic signal sensed by the electrostatic sensor; when the digital signal is greater than or equal to the background threshold, determine that there is a low-flying target in the preset space.

[0008] In some embodiments, the processing unit is specifically configured to perform at least one of the following pre-processing on the electrostatic signal: filtering processing, denoising processing, and amplification processing.

[0009] In some embodiments, it also includes: an alarm unit, which is communicatively connected to the processing unit and is configured to issue an alarm when the processing unit determines that the low-flying target exists in the preset space.

[0010] The disclosed embodiment also provides a method for detecting a low-altitude flying target, which at least includes: driving an acquisition circuit to acquire an electrostatic signal sensed by an electrostatic sensor; and determining whether there is a low-altitude flying target in the preset space according to the electrostatic signal.

[0011] In some embodiments, determining whether there is a low-flying target in the preset space based on the electrostatic signal includes: preprocessing the electrostatic signal; converting the preprocessed electrostatic signal into a digital signal; and determining whether there is a low-flying target in the preset space based on the digital signal.

[0012] In some embodiments, determining whether there is a low-flying target in the preset space based on the digital signal includes: comparing the digital signal with a background threshold; when the digital signal is less than the background threshold, determining that there is no low-flying target in the preset space, and continuously driving the acquisition circuit to acquire the electrostatic signal sensed by the electrostatic sensor; when the digital signal is greater than or equal to the background threshold, determining that there is a low-flying target in the preset space.

[0013] An embodiment of the present disclosure also provides an electronic device, comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned method for detecting low-altitude flying targets when executing the computer program on the memory.

[0014] The beneficial effects of the embodiments of the present disclosure are as follows: an electrostatic sensor is made according to the law of electrostatic charging and discharge to sense the electrostatic signals generated by low-flying targets during flight, and the signals are collected through an acquisition circuit. The processing unit can determine whether there is a low-flying target in the current preset space based on the collected electrostatic signals. The detection principle is simple and easy to implement. At the same time, since electrostatic detection is a passive detection without reflection, there is no problem of near-field blind spots, which effectively improves the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the structure of a low-altitude flying target detection system in the first embodiment of the present disclosure;

[0017] Figures 2 to 6 This is a schematic diagram of the shape of the electrostatic induction probe in the first embodiment of the present disclosure;

[0018] Figure 7 Another structural schematic diagram of the low-altitude flying target detection system in the first embodiment of the present disclosure;

[0019] Figure 8 It is a flow chart of a method for detecting a low-altitude flying target in a second embodiment of the present disclosure;

[0020] Fig. 9 Schematic diagram of the structure of an electronic device in the third embodiment of the present disclosure. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the following will be combined with the drawings in one or more embodiments of this specification to clearly and completely describe the technical solutions in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0022] At present, when radar detects flying targets such as drones, it can accurately detect them at higher altitudes, but low altitudes (below 100 meters, or even below 200 meters) or close distances (within 100 meters) are radar blind spots, and it is impossible to accurately detect flying targets. For example, drones that fly very slowly or even hover cannot be detected by radar because the Doppler effect of electromagnetic waves cannot be used. In addition, drones made of non-metallic materials such as polymer materials such as plastics are also difficult to detect by radar because the electromagnetic wave reflection cross-section is very small.

[0023] In order to solve the above problems, the first embodiment of the present disclosure provides a low-flying target detection system. When low-flying targets such as drones move, their rotating blades interact with air molecules and may generate static electricity, especially in a dry environment, or when passing through a cloud of charged particles (such as sand storms or industrial emissions) during flight, static electricity may also accumulate. Therefore, this embodiment collects and judges the static electricity conditions in the preset space where the detection system is arranged to determine whether there are low-flying targets in the preset space.

[0024] Figure 1 FIG. 2 shows a schematic diagram of the structure of the low-altitude flying target detection system in this embodiment. Figure 1 As shown, the detection system mainly includes an electrostatic sensor 10, a collection circuit 20 and a processing unit 30; wherein the electrostatic sensor 10 is mainly arranged in a preset space and is configured to sense the electrostatic signal in the preset space; the input end of the collection circuit 20 is electrically connected to the electrostatic sensor 10, and is configured to collect the electrostatic signal in the preset space sensed by the electrostatic sensor 10, and output it to the processing unit 30 in the form of an analog signal; the input end of the processing unit 30 is electrically connected to the output end of the collection circuit 20, and is configured to obtain the electrostatic signal collected by the collection circuit 20, and then determine whether there is a low-altitude flying target in the preset space according to the electrostatic signal.

[0025] Specifically, the electrostatic sensor 10 at least includes an electrostatic induction probe and a support rod. The electrostatic induction probe is made according to the law of electrostatic charging and discharge, and can sense electrostatic signals in space, including but not limited to static electricity or electrostatic charging and discharge signals generated by the friction of the flying target. The support rod is mainly used to support and fix the electrostatic induction probe. One end of the support rod is connected to the electrostatic induction probe, and the other end is fixed to a preset support surface in a preset space. For example, the electrostatic induction probe is fixed on a fixed surface in the space to be detected. This surface includes but is not limited to the surface of fixed objects such as the ground, roof, and wall, and can also be the surface of a movable device, such as a detection car, a detection aircraft, etc. In actual preparation, the electrostatic induction probe is made of a conductor or an electrostatic conductor, which can be configured into any shape, including but not limited to spherical, plate-shaped, cylindrical, conical, parabolic, etc. Figures 2 to 6 Several schematic diagrams of the shapes of electrostatic induction probes are shown. In actual use, electrostatic induction probes of any shape can be selected according to needs, and this embodiment does not impose any specific limitation.

[0026] The electrostatic sensor 10 in this embodiment is configured in conjunction with the collection circuit 20. The collection circuit 20 can be directly implemented using a conventional electrostatic collection circuit or collection device. The electrostatic sensor 10 is used to improve the collection efficiency and collection effect of the electrostatic signal in the space, and the collected electrostatic signal is output to the processing unit 30 for subsequent processing.

[0027] After receiving the electrostatic signal, the processing unit 30 analyzes and processes the electrostatic signal according to the preset processing principle to detect the low-altitude flying target in the preset space. Specifically, the processing unit 30 first pre-processes the electrostatic signal to improve the accuracy and stability of the electrostatic signal, and then converts it into a digital signal with better operability and presentation, and finally uses the converted digital signal as a basis for determining whether there is a low-altitude flying target in the preset space. When actually processing, the pre-processing of the electrostatic signal performed by the processing unit 30 includes at least one of the following: filtering, denoising, and amplification. When designing the processing unit 30, it is necessary to design a corresponding software algorithm or hardware circuit to complete the above pre-processing, such as completing the filtering through a filtering circuit, implementing the amplification through an operational amplifier, and performing signal noise reduction through a denoising algorithm. In some embodiments, the above pre-processing can also be performed after the electrostatic signal is converted into a digital signal to avoid the introduction of nonlinear distortion and noise in the denoising, filtering, and amplification of the analog signal, which affects the subsequent comparison results, while the above processing of the digital signal does not introduce additional noise, and has better accuracy and flexibility.

[0028] When using digital signals to determine whether there is a low-flying target in the preset space, the processing unit 30 is specifically configured to compare the digital signal with the background threshold. When the digital signal is less than the background threshold, it is determined that there is no low-flying target in the preset space, and the acquisition circuit is continuously driven to collect the electrostatic signal sensed by the electrostatic sensor; when the digital signal is greater than or equal to the background threshold, it is determined that there is a low-flying target in the preset space. The above-mentioned background threshold is usually the background noise value in the preset space. The specific value of the threshold can be set according to different geographical locations of the preset space, such as 3db or 5db. When the processing unit 30 determines that the size of the digital signal exceeds the above-mentioned background noise, it means that there are other subjects in the preset space that generate additional electrostatic signals exceeding the default background noise. At this time, the processing unit 30 determines that there is a low-flying target in the preset space. If the digital signal is less than the above-mentioned background noise, it means that there is no other subject movement in the preset space during the acquisition. The processing unit 30 drives the acquisition circuit 20 to collect the electrostatic signal in real time.

[0029] In some embodiments, the processing unit 30 may also perform feature analysis on the received electrostatic signal to obtain its characteristic waveform, and use the characteristic waveform to compare with the characteristic waveform of the electrostatic signal when the corresponding target flies over to determine whether there is a low-flying target in the preset space.

[0030] Furthermore, the detection system may also include an alarm unit 40, such as Figure 7 As shown, the alarm unit 40 is connected to the processing unit 30 for communication (using Figure 7 The processing unit 30 is connected by a dotted line in the middle), and is specifically configured to sound an alarm when the processing unit 30 determines that there is a low-flying target in the preset space. In some embodiments, the alarm unit 40 may be a buzzer, which sounds an alarm when it is determined that there is a low-flying target, or it may be a display device with a display function. When it is determined that there is a low-flying target, the processing unit 30 generates a display signal of corresponding content to drive the display device to display a corresponding alarm screen, etc. The alarm unit 40 may also be a combination of the above-mentioned buzzer and display device, or other devices with an alarm function, which are not specifically limited in this embodiment.

[0031] This embodiment makes an electrostatic sensor according to the law of electrostatic charging and discharge to sense the electrostatic signal generated by a low-flying target during flight, and collects the signal through an acquisition circuit. The processing unit can determine whether there is a low-flying target in the current preset space based on the collection of the electrostatic signal. The detection principle is simple and easy to implement. At the same time, since electrostatic detection is a passive detection without reflection, there is no problem of near-field blind spot, which effectively improves the detection accuracy.

[0032] Based on the same inventive concept, the second embodiment of the present disclosure provides a method for detecting a low-altitude flying target, which is mainly performed by a processing device or a server device connected to an electrostatic sensor and a collection circuit. The flow chart is as follows: Figure 8 As shown, it mainly includes:

[0033] S10, driving the acquisition circuit to acquire the electrostatic signal sensed by the electrostatic sensor;

[0034] S20, determining whether there is a low-flying target in the preset space according to the electrostatic signal.

[0035] Specifically, when determining whether there is a low-flying target in a preset space according to an electrostatic signal, the following steps are specifically performed: preprocessing the electrostatic signal; converting the preprocessed electrostatic signal into a digital signal; and determining whether there is a low-flying target in the preset space according to the digital signal. When actually processing, the preprocessing of the electrostatic signal includes at least one of the following: filtering, denoising, and amplification. When designing a processor, it is necessary to design a corresponding software algorithm or hardware circuit to complete the above preprocessing, such as completing the filtering through a filtering circuit, implementing the amplification through an operational amplifier, and performing signal noise reduction through a denoising algorithm. In some embodiments, the above preprocessing can also be performed after the electrostatic signal is converted into a digital signal to avoid the introduction of nonlinear distortion and noise in the denoising, filtering, and amplification of the analog signal, which affects the subsequent comparison results. The above processing of the digital signal does not introduce additional noise, and has better accuracy and flexibility.

[0036] Furthermore, when determining whether there is a low-flying target in the preset space according to the digital signal, the following steps are specifically performed: comparing the digital signal with the background threshold; when the digital signal is less than the background threshold, determining that there is no low-flying target in the preset space, and continuously driving the acquisition circuit to collect the electrostatic signal sensed by the electrostatic sensor; when the digital signal is greater than or equal to the background threshold, determining that there is a low-flying target in the preset space. The above-mentioned background threshold is usually the background noise value in the preset space. The specific value of the threshold can be set according to different geographical locations of the preset space, such as 3db or 5db. When the size of the digital signal exceeds the above-mentioned background noise, it means that there are other subjects in the preset space that generate additional electrostatic signals exceeding the default background noise. At this time, it is determined that there is a low-flying target in the preset space. If the digital signal is less than the above-mentioned background noise, it means that there are no other subjects moving in the preset space during acquisition.

[0037] The specific content of the method provided in this embodiment is described in detail in the first embodiment of this disclosure, and will not be repeated here. This embodiment makes an electrostatic sensor according to the law of electrostatic charging and discharge to sense the electrostatic signal generated by the low-altitude flying target during the flight, and collects it through the collection circuit. The processing unit can judge whether there is a low-altitude flying target in the current preset space based on the collection of the electrostatic signal. The detection principle is simple and easy to implement. At the same time, since electrostatic detection is a passive detection without reflection, there is no problem of near-field blind spot, which effectively improves the detection accuracy.

[0038] Based on the same inventive concept, the third embodiment of the present disclosure provides an electronic device, whose structural schematic diagram is as follows: Fig. 9 As shown, it at least includes a memory and a processor, and a computer program is stored in the memory. It is characterized in that the processor implements the steps of the low-altitude flying target detection method of the second embodiment of the present disclosure when executing the computer program in the memory.

[0039] It should be noted that the embodiments of the storage medium in this specification and the embodiments of the blockchain-based service provision method in this specification are based on the same inventive concept. Therefore, the specific implementation of this embodiment can refer to the aforementioned corresponding implementation of the blockchain-based service provision method, and the repeated parts will not be repeated.

[0040] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0041] In the 1930s, improvements to a technology could be clearly distinguished as hardware improvements (for example, improvements to the circuit structure of diodes, transistors, switches, etc.) or software improvements (improvements to the method flow). However, with the development of technology, many improvements to the method flow today can be regarded as direct improvements to the hardware circuit structure. Designers almost always obtain the corresponding hardware circuit structure by programming the improved method flow into the hardware circuit. Therefore, it cannot be said that an improvement in a method flow cannot be implemented using a hardware entity module. For example, a programmable logic device (PLD) (such as a field programmable gate array (FPGA)) is such an integrated circuit whose logical function is determined by the user's programming of the device. Designers can "integrate" a digital system on a PLD by programming it themselves, without having to ask a chip manufacturer to design and produce a dedicated integrated circuit chip. Moreover, nowadays, instead of manually making integrated circuit chips, this kind of programming is mostly implemented by "logic compiler" software, which is similar to the software compiler used when developing and writing programs, and the original code before compilation must also be written in a specific programming language, which is called hardware description language (HDL). There is not only one HDL, but many kinds, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc. The most commonly used ones are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also know that it is only necessary to program the method flow slightly in the above-mentioned hardware description languages ​​and program it into the integrated circuit, and then it is easy to obtain the hardware circuit that implements the logic method flow.

[0042] The controller can be implemented in any appropriate manner, for example, the controller can take the form of a microprocessor or processor and a computer-readable medium storing a computer-readable program code (such as software or firmware) that can be executed by the (micro)processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320. The memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that in addition to implementing the controller in a purely computer-readable program code manner, the controller can be implemented in the form of a logic gate, a switch, an application-specific integrated circuit, a programmable logic controller, and an embedded microcontroller by logically programming the method steps. Therefore, this controller can be considered as a hardware component, and the devices included therein for implementing various functions can also be regarded as structures within the hardware component. Or even, the devices for implementing various functions can be regarded as both software modules for implementing the method and structures within the hardware component.

[0043] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0044] For the convenience of description, the above devices are described in terms of functions and are divided into various units. Of course, when implementing the embodiments of this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0045] It should be understood by those skilled in the art that one or more embodiments of this specification may be provided as a method, system or computer program product. Therefore, one or more embodiments of this specification may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0046] This specification is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of this specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0047] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0048] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0049] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0050] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0051] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0052] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0053] One or more embodiments of the present specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. One or more embodiments of the present specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0054] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0055] The above description is only an embodiment of this document and is not intended to limit this document. For those skilled in the art, this document may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this document should be included in the scope of the claims of this document.

Claims

1. A low-altitude flying target detection system, characterized in that: include: Electrostatic sensor, collection circuit and processing unit; wherein, The electrostatic sensor is configured to sense an electrostatic signal in a preset space; The input end of the acquisition circuit is electrically connected to the electrostatic sensor and is configured to acquire the electrostatic signal induced by the electrostatic sensor; The input end of the processing unit is electrically connected to the output end of the acquisition circuit, and is configured to determine whether there is a low-flying target in the preset space according to the electrostatic signal.

2. The detection system according to claim 1, characterized in that: The electrostatic sensor at least comprises: an electrostatic induction probe and a support; wherein the electrostatic induction probe is made of a conductor or an electrostatic conductor, one end of the support is connected to the electrostatic induction probe, and the other end of the support is connected to a preset support surface in the preset space.

3. The detection system according to claim 1, characterized in that: The processing unit is specifically configured as follows: Preprocessing the electrostatic signal; Convert the pre-processed electrostatic signal into a digital signal; Determine whether there is a low-altitude flying target in the preset space according to the digital signal.

4. The detection system according to claim 3, characterized in that: The processing unit is specifically configured as follows: comparing the digital signal to a background threshold; When the digital signal is less than the background threshold, determining that there is no low-flying target in the preset space, and continuously driving the acquisition circuit to acquire the electrostatic signal sensed by the electrostatic sensor; When the digital signal is greater than or equal to the background threshold, it is determined that there is a low-flying target in the preset space.

5. The detection system according to claim 3, characterized in that: The processing unit is specifically configured as follows: At least one of the following pre-processing is performed on the electrostatic signal: filtering processing, denoising processing, and amplification processing.

6. The detection system according to any one of claims 1 to 5, characterized in that: Also includes: An alarm unit is communicatively connected to the processing unit and is configured to generate an alarm when the processing unit determines that the low-flying target exists in the preset space.

7. A method for detecting a low-altitude flying target, characterized in that: At least: The driving collection circuit collects the electrostatic signal sensed by the electrostatic sensor; Determine whether there is a low-flying target in the preset space according to the electrostatic signal.

8. The detection method according to claim 7, characterized in that: The determining, according to the electrostatic signal, whether there is a low-altitude flying target in the preset space includes: Preprocessing the electrostatic signal; Convert the pre-processed electrostatic signal into a digital signal; Determine whether there is a low-altitude flying target in the preset space according to the digital signal.

9. The detection method according to claim 8, characterized in that: The determining, according to the digital signal, whether there is a low-altitude flying target in the preset space comprises: comparing the digital signal to a background threshold; When the digital signal is less than the background threshold, determining that there is no low-flying target in the preset space, and continuously driving the acquisition circuit to acquire the electrostatic signal sensed by the electrostatic sensor; When the digital signal is greater than or equal to the background threshold, it is determined that there is a low-flying target in the preset space.

10. An electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the steps of the method for detecting low-altitude flying targets according to any one of claims 7 to 9 when executing the computer program on the memory.

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