Gun drawing detection and law enforcement recorder linkage evidence obtaining scheduling system and method

Abstract

The invention discloses a gun drawing detection and law enforcement recorder linkage evidence obtaining scheduling system and method. The system comprises a holster gun sensing module, a law enforcement recorder and a linkage evidence obtaining scheduling platform. The holster and gun sensing module is responsible for detecting the gun pulling-out action and interacts with the law enforcement recorder through the near field communication technology. The law enforcement recorder integrates positioning and communication functions, automatically records video and audio after receiving a gun drawing signal, and uploads data to a platform in real time. And the linkage evidence obtaining scheduling platform is responsible for processing information uploaded by the law enforcement recorder and realizing positioning management, alarm, instruction issuing and file management. The system can realize real-time detection and response to gun pulling events, provides complete video and audio evidences for law enforcement, supports rapid research, judgment, command and dispatch, enhances the actual combat capability of on-site law enforcement, and can effectively improve the safety and efficiency of law enforcement activities. The evidence collection integrity, the system response timeliness and the on-site commanding and dispatching efficiency in the law enforcement process are improved by further optimizing the design.

Description

Technical Field

[0001] The present invention relates to audio-visual picture communication and intelligent device interconnection technology, and in particular to a gun drawing detection and law enforcement recorder linkage evidence collection dispatching system and method. Background Art

[0002] The guns that police officers carry are usually kept in holsters and worn on police belts. If the gun is out of the holster for a long time, it may be stolen or robbed. If the gun is pulled out of the holster, it may also be an emergency situation, and the gun needs to be used to complete important law enforcement activities such as vigilance, deterrence, or even shooting.

[0003] If a gun leaves the holster, an alarm can be immediately sent to the command center or gun management center (hereinafter referred to as the "center"), and the center can even see the video and audio images of the scene in real time, so that the center can immediately make judgments and take targeted measures, and immediately dispatch other police officers to provide on-site support when necessary. This has very important practical significance for protecting gun safety and assisting on-site police officers to successfully complete their tasks.

[0004] The law enforcement recorder is a smart law enforcement equipment that the Ministry of Public Security stipulates that police officers must wear. In addition to the function of recording video and audio, it can also be equipped with Beidou and other positioning modules to achieve location positioning; equipped with Bluetooth / Zigbee / NFC and other near-field communication modules to achieve IoT interoperability with peripheral devices; it can also be equipped with WIFI / 4G / 5G remote communication modules to achieve real-time communication with the platform. The recorder's positioning information and collected video and audio data can be uploaded to the platform deployed in the center in real time, and non-real-time video and audio can be collected to the platform through the collection workstation.

[0005] The existing solutions mainly include: 1. It can detect whether the gun has left the holster; 2. The law enforcement recorder can only be turned on manually, and cannot be associated with the gun drawing event. For solution 1, the gun drawing event cannot be reported to the platform in real time, nor can the surrounding audio and video information be sent to the platform in real time, so the center cannot conduct research and judgment and targeted command and dispatch. For solution 2, recording is done manually, and there may be a situation where the recording is forgotten. Even if the recording is done, it may not be timely, and there may be omissions of audio and video before the recording starts.

[0006] It should be noted that the information disclosed in the above background technology section is only used for understanding the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0007] The main purpose of the present invention is to overcome the defects existing in the above-mentioned background technology and provide a system and method for dispatching gun drawing detection and law enforcement recorder linkage evidence collection.

[0008] To achieve the above object, the present invention adopts the following technical solutions: A gun drawing detection and law enforcement recorder linkage evidence collection dispatching system, comprising: The holster gun sensing module is installed on the holster to detect whether the gun is pulled out of the holster and to perform near-field communication with the law enforcement recorder; At least one law enforcement recorder, used to receive the gun draw detection signal from the gun sensor module of the holster, automatically start the video and audio recording function, and establish a communication connection with the linkage evidence dispatching platform according to a preset communication protocol; The linkage evidence collection and dispatching platform includes a communication and protocol module, a registration module, a positioning management module, a business linkage module, and a file return / collection module; The communication and protocol module is used to receive the registration information and gun drawing detection information sent by the law enforcement recorder, and transmit the information to the registration module and the business linkage module; The registration module is used to receive and store the registration information of the law enforcement recorder and the holster gun sensing module, including their serial numbers and positioning information; The positioning management module is used to perform positioning management on the law enforcement recorder and provide location data support for the business linkage module based on the positioning information; The business linkage module is used to initiate an alarm based on the received gun drawing detection information and positioning information, and send a streaming instruction to the law enforcement recorder through the communication and protocol module when necessary; the law enforcement recorder sends the video and audio data to the linkage evidence dispatching platform in real time according to the streaming instruction, so that the linkage evidence dispatching platform can quickly analyze and command and dispatch; The file transmission / collection module is used to manage the transmission and collection of audio and video data recorded by the law enforcement recorder, and store the collected audio and video files; Among them, the holster gun sensing module and the law enforcement recorder are bound and registered in a one-to-one mode or a broadcast mode, and the law enforcement recorder and the linkage evidence collection and dispatching platform exchange information through the communication and protocol module to achieve real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid analysis and command and dispatch of the platform.

[0009] Furthermore, the holster gun sensing module includes a PCB frequency detection component, an inductance signal digital converter, a main control module and a communication and protocol module; wherein the PCB frequency detection component is arranged close to the gun placement space in the holster, and the PCB frequency detection component has a built-in inductance coil. When the metal part of the gun approaches or moves away, the electromagnetic coupling effect between the metal and the inductance coil causes the inductance value to change, thereby causing the oscillation frequency of the LC oscillation circuit included in the inductance signal digital converter to change; the inductance signal digital converter converts the inductance change into a digital signal and communicates with the main control module; the main control module is used to control the communication and protocol module to realize Bluetooth communication with the law enforcement recorder, thereby realizing the detection of the gun pulling behavior.

[0010] Furthermore, one-to-one mode binding and registration includes: The law enforcement camera searches and selects a holster gun sensing module through near field communication; After receiving the selected information, the gun holster gun sensing module sends a binding confirmation message to the law enforcement recorder; The law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linked evidence collection and dispatching platform sends a registration confirmation message back to the law enforcement recorder to complete the one-to-one binding registration.

[0011] Furthermore, broadcast mode binding and registration includes: The holster gun sensor module sends a broadcast message to all law enforcement cameras within the near field communication range, including its own serial number; Each law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linkage evidence dispatching platform determines the law enforcement recorder for subsequent services according to a preset algorithm, and sends a registration confirmation message carrying a determination information parameter to the law enforcement recorder; wherein the linkage evidence dispatching platform determines that the law enforcement recorder that first receives its message and has not yet been bound provides the holster gun sense module with the push streaming and positioning functions, or determines that the law enforcement recorder that is closest to the holster gun sense module in terms of positioning distance provides the holster gun sense module with the push streaming and positioning functions; The linkage evidence collection dispatching platform sends a registration confirmation message without a ruling information parameter to the remaining recorders.

[0012] Furthermore, the linkage between the holster gun sensing module, the law enforcement recorder and the linkage evidence collection and dispatching platform includes: After the gun sensor module detects the action of drawing the gun, it sends a trigger event to the law enforcement camera; The law enforcement camera starts local recording and marks the local recording as important video and the event as a gun-drawing incident; For law enforcement recorders with WIFI / 4G / 5G functions, send alarm / streaming information to the linkage evidence collection and dispatching platform; The linkage evidence collection dispatching platform initiates streaming instructions to the law enforcement recorder as needed to achieve real-time streaming of video and audio; The linkage evidence collection dispatching platform sends a stop streaming command to the law enforcement recorder when necessary, terminating the real-time streaming of video and audio; Furthermore, when the linkage evidence dispatching platform is connected to the public security video surveillance network or other audio and video recording equipment, the linkage evidence dispatching platform triggers the public security video surveillance network camera or designated audio and video recording equipment within the predetermined range of the law enforcement recorder to perform synchronous recording according to the positioning information of the law enforcement recorder and the preset linkage rules, and integrates the relevant audio and video data into the same event record to enrich the on-site evidence chain.

[0013] Furthermore, the linkage evidence collection and dispatching platform detects the duration of time during which the gun is not returned to the holster after being drawn, as transmitted by the law enforcement recorder. When the duration exceeds a preset threshold, it is determined that the gun is robbed or stolen, and an alarm is initiated.

[0014] A method for dispatching gun drawing detection and law enforcement recorder linkage evidence collection includes the following steps: A holster gun sensing module is installed on the holster, and the holster gun sensing module is used to detect whether the gun is pulled out of the holster and perform near field communication with the law enforcement recorder; At least one law enforcement recorder receives a gun draw detection signal from the gun sensor module of the holster, automatically starts the video and audio recording function, and establishes a communication connection with the linkage evidence dispatching platform according to a preset communication protocol; The linkage evidence collection and dispatching platform receives the registration information and gun drawing detection information sent by the law enforcement recorder, performs positioning management, initiates an alarm based on the received information, and issues a streaming command to the law enforcement recorder when necessary; The law enforcement recorder sends the video and audio data to the platform in real time according to the streaming instructions issued by the joint evidence collection and dispatching platform, so that the platform can conduct rapid analysis and command and dispatch; The linkage evidence collection and dispatching platform manages the transmission and collection of files, including the collection of audio and video materials recorded by law enforcement recorders, and the storage of collected audio and video files; Among them, the holster gun sensing module and the law enforcement recorder are bound and registered in a one-to-one mode or a broadcast mode, and the law enforcement recorder and the linkage evidence collection and dispatching platform exchange information through the communication and protocol module to achieve real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid analysis and command and dispatch of the platform.

[0015] Furthermore, the one-to-one mode binding and registration process includes the following steps: The law enforcement camera searches and selects a holster gun sensing module through near field communication; After receiving the selected information, the gun holster gun sensing module sends a binding confirmation message to the law enforcement recorder; The law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linked evidence collection and dispatching platform sends a registration confirmation message back to the law enforcement recorder to complete the one-to-one binding registration.

[0016] Furthermore, the broadcast mode binding and registration process includes the following steps: The holster gun sensor module sends a broadcast message to all law enforcement cameras within the near field communication range, including its own serial number; Each law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linkage evidence dispatching platform determines the law enforcement recorder for subsequent services according to a preset algorithm, and sends a registration confirmation message carrying a determination information parameter to the law enforcement recorder; wherein the linkage evidence dispatching platform determines that the law enforcement recorder that first receives its message and has not yet been bound provides the holster gun sense module with the push streaming and positioning functions, or determines that the law enforcement recorder that is closest to the holster gun sense module in terms of positioning distance provides the holster gun sense module with the push streaming and positioning functions; The linkage evidence collection dispatching platform sends a registration confirmation message without a ruling information parameter to the remaining recorders.

[0017] Furthermore, the linkage process between the holster gun sensing module and the law enforcement recorder includes the following steps: After the gun sensor module detects the action of drawing the gun, it sends a trigger event to the law enforcement camera; The law enforcement recorder starts local recording and marks the local recording as important video and the event as a gun-drawing incident; For law enforcement recorders with WIFI / 4G / 5G functions, send alarm / streaming information to the linkage evidence collection and dispatching platform; The linkage evidence collection dispatching platform initiates streaming instructions to the law enforcement recorder as needed to achieve real-time streaming of video and audio; The linkage evidence collection dispatching platform sends a stop streaming command to the law enforcement recorder when necessary, terminating the real-time streaming of video and audio; Furthermore, when the linkage evidence dispatching platform is connected to the public security video surveillance network or other audio and video recording equipment, the linkage evidence dispatching platform triggers the public security video surveillance network camera or designated audio and video recording equipment within the predetermined range of the law enforcement recorder to perform synchronous recording according to the positioning information of the law enforcement recorder and the preset linkage rules, and integrates the relevant audio and video data into the same event record to enrich the on-site evidence chain.

[0018] The present invention has the following beneficial effects: The present invention realizes the real-time detection of the gun pulling behavior by installing a gun sensing module on the holster, and performs near-field communication with the law enforcement recorder, thereby triggering the law enforcement recorder to automatically start the audio and video recording function. The law enforcement recorder can establish a communication connection with the linkage evidence dispatching platform according to the preset communication protocol, and transmit the audio and video data of the gun pulling event to the platform in real time. The linkage evidence dispatching platform has a communication and protocol module, a registration module, a positioning management module, a business linkage module and a file return / collection module, which can receive the registration information and gun pulling detection information of the law enforcement recorder, perform positioning management, initiate alarms, and issue streaming instructions when necessary to realize real-time streaming and command and dispatch of audio and video. In addition, the platform can also manage the return and collection of audio and video data recorded by the law enforcement recorder to ensure the integrity and traceability of the evidence. The gun sensing module of the holster supports binding and registration in one-to-one mode or broadcast mode with the law enforcement recorder, which further enhances the flexibility and adaptability of the system. Through this linkage mechanism, the present invention not only achieves rapid response and real-time evidence collection for gun-drawing incidents, but also provides complete audio-visual evidence support for law enforcement activities, effectively improving law enforcement efficiency and safety, and enhancing the practical capabilities of on-site law enforcement.

[0019] The present invention further proposes some preferred solutions and designs, which correspondingly obtain outstanding technical advantages, such as: Further preferably, the design of the gun holster gun sensing module of the present invention adopts PCB frequency detection components and inductance signal digital converters, which can detect the gun drawing behavior with high precision and sensitivity. Its detection mechanism based on electromagnetic coupling effect has high sensitivity and strong anti-interference ability, ensuring the accurate triggering of the gun drawing event. The compact design of the module allows it to be easily installed on any gun holster without modification, and it can have independent power supply capability and strong adaptability.

[0020] Further preferably, in the broadcast mode binding and registration scenarios, the linkage evidence dispatching platform flexibly determines the service law enforcement recorders through preset algorithms, and can select the optimal device to provide streaming and positioning functions according to actual needs. This mechanism not only improves the adaptability and flexibility of the system, but also ensures that the linkage relationship is established quickly and efficiently in a multi-device environment. At the same time, by sending a registration confirmation message carrying the ruling information parameters to the selected recorder, and sending messages without the ruling information parameters to other recorders, the system clearly divides the device responsibilities, avoids resource conflicts and redundant operations, and further improves the collaborative efficiency between the law enforcement recorder and the holster gun sensing module and the overall system performance.

[0021] Further preferably, by detecting the duration of the gun not being returned after being drawn and determining whether the gun has been robbed or stolen, the linkage evidence dispatching platform can quickly and accurately identify and warn of potential gun safety threats. This intelligent judgment mechanism based on time threshold effectively makes up for the shortcomings of traditional detection methods, avoids false alarms caused by misoperation or short-term gun drawing, and significantly improves the initiative and real-time nature of gun safety management. In addition, the timely initiation of the alarm function can quickly notify the command center and relevant personnel to take countermeasures, greatly enhancing the safety assurance capabilities of the law enforcement scene.

[0022] Further preferably, by connecting to the public security video surveillance network or designated audio and video recording equipment through the linkage evidence collection and dispatching platform, when the act of drawing a gun is detected and the law enforcement recorder is triggered to record, synchronous recording and data integration are performed. The present invention can achieve all-round and multi-angle evidence collection at the law enforcement scene, significantly improving the integrity and reliability of the evidence. This cross-device synchronous recording and data integration mechanism has effectively enriched the on-site evidence chain. In addition, the introduction of this linkage mechanism also makes the command and dispatch in the law enforcement process more efficient, and provides strong technical support for the rapid response and handling of various emergencies.

[0023] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the logic functions and modules of the gun drawing detection and law enforcement recorder linkage evidence collection scheduling system according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the gun sensing module of the holster and its assembly with the holster according to an embodiment of the present invention.

[0026] Figure 3 Schematic diagram of the logic function and structure of the gun sensing module of the holster according to the embodiment of the present invention.

[0027] Figure 4 This is a one-to-one mode holster gun sensing module and a law enforcement recorder binding registration process in an embodiment of the present invention.

[0028] Figure 5 This is the binding registration process of the broadcast mode holster gun sensing module and the law enforcement recorder in an embodiment of the present invention.

[0029] Figure 6 This is the linkage process between the holster gun sensing module, the law enforcement recorder and the platform according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing as well as for coupling or communication.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] See also Figures 1 to 6The embodiment of the present invention provides a gun drawing detection and law enforcement recorder linkage evidence collection scheduling system, comprising: a holster gun sensing module installed on the holster, used to detect whether the gun is drawn out of the holster, and to perform near-field communication with the law enforcement recorder; at least one law enforcement recorder, used to receive the gun drawing detection signal from the holster gun sensing module, automatically start the video and audio recording function, and establish a communication connection with the linkage evidence collection scheduling platform according to a preset communication protocol; the linkage evidence collection scheduling platform, including a communication and protocol module, a registration module, a positioning management module, a business linkage module and a file return / collection module; wherein the communication and protocol module is used to receive the registration information and gun drawing detection information sent by the law enforcement recorder, and transmit the information to the registration module and the business linkage module; the registration module is used to receive and store the registration information of the law enforcement recorder and the holster gun sensing module, including its serial number and positioning information; the positioning management module is used to locate the law enforcement recorder The system can manage the position of the law enforcement recorder and provide location data support for the business linkage module according to the positioning information; the business linkage module is used to initiate an alarm according to the received gun drawing detection information and positioning information, and send a streaming instruction to the law enforcement recorder through the communication and protocol module when necessary; the law enforcement recorder sends the audio and video data to the linkage evidence scheduling platform in real time according to the streaming instruction, so as to facilitate the linkage evidence scheduling platform to perform rapid analysis and command and dispatch; the file return / collection module is used to manage the return and collection of the audio and video data recorded by the law enforcement recorder, and store the collected audio and video files; wherein, the holster gun sensing module and the law enforcement recorder are bound and registered in a one-to-one mode or a broadcast mode, and the law enforcement recorder and the linkage evidence scheduling platform exchange information through the communication and protocol module to realize real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid analysis and command and dispatch of the platform.

[0035] The gun drawing detection and law enforcement recorder linkage evidence dispatching system of the present invention includes a holster gun sensing module, a law enforcement recorder and a linkage evidence dispatching platform. The holster gun sensing module can detect whether the gun is drawn and perform near-field communication with the law enforcement recorder. After receiving the gun drawing signal, the law enforcement recorder automatically starts audio and video recording, and sends the data to the platform in real time. The linkage evidence dispatching platform is responsible for receiving registration information and gun drawing detection information, performing positioning management, initiating alarms, issuing streaming instructions, and managing the return and collection of files. The system supports one-to-one binding or broadcast mode communication, realizes real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid judgment and command and dispatch of the platform, effectively improving law enforcement efficiency and safety.

[0036] like Figure 2 and Figure 3As shown, in a preferred embodiment, the holster gun sense module is designed as an accessory on the holster, and includes a PCB frequency detection component, an inductance signal digital converter, a main control module and a communication and protocol module. The holster gun sense module is arranged on the side of the holster 1, and the PCB frequency detection component is arranged close to the gun placement space in the holster 1. The holster gun sense module 2 can be fixed on one side of the holster 1 by bonding methods such as 3M glue or other assembly methods. Such a design facilitates the assembly of the holster gun sense module 2 as an independent accessory on any holster. The PCB frequency detection component has a built-in inductance coil. When the metal part of the gun approaches or moves away, the electromagnetic coupling effect between the metal and the inductance coil causes the change of the inductance value, which in turn causes the change of the oscillation frequency of the LC oscillation circuit included in the inductance signal digital converter; the inductance signal digital converter converts the inductance change into a digital signal and communicates with the main control module; the main control module is used to control the communication and protocol module to realize Bluetooth communication with the law enforcement recorder, thereby realizing the detection of the gun pulling behavior. The gun holster gun sensing module 2 can be equipped with a power switch 3, which can conveniently manually control the opening and closing of the module. Of course, the gun holster gun sensing module of the present invention is not limited to the above preferred design, and various existing gun drawing detection means can also be used.

[0037] The design of the gun holster gun sensing module of this embodiment adopts PCB frequency detection components and inductance signal digital converters, which can detect the gun withdrawal behavior with high precision and sensitivity. Its detection mechanism based on electromagnetic coupling effect has high sensitivity and strong anti-interference ability, ensuring the accurate triggering of the gun withdrawal event. The compact design of the module allows it to be easily installed on the gun holster, and it can have independent power supply capability and strong adaptability.

[0038] like Figure 4 As shown, in some embodiments, the one-to-one mode binding and registration between the holster gun sensing module and the law enforcement recorder includes: the law enforcement recorder searches and selects a holster gun sensing module through near field communication; after the holster gun sensing module receives the selected information, it sends a binding confirmation message to the law enforcement recorder; the law enforcement recorder sends a registration message to the linkage evidence collection scheduling platform, including the serial number of the holster gun sensing module and its positioning information; the linkage evidence collection scheduling platform sends a registration confirmation message back to the law enforcement recorder to complete the one-to-one mode binding registration.

[0039] like Figure 5As shown, in a preferred embodiment, the broadcast mode binding and registration between the holster gun sense module and the law enforcement recorder includes: the holster gun sense module sends a broadcast message to all law enforcement recorders within the near field communication range, including its own serial number; each law enforcement recorder sends a registration message to the linkage evidence scheduling platform, including the serial number of the holster gun sense module and its positioning information; the linkage evidence scheduling platform determines the law enforcement recorder to be served later according to a preset algorithm, and sends a registration confirmation message carrying the determination information parameter to it; wherein the linkage evidence scheduling platform determines that the law enforcement recorder that first receives its message and has not yet been bound provides the holster gun sense module with the push streaming and positioning function, or determines that the law enforcement recorder that is closest to the holster gun sense module in terms of positioning distance provides the holster gun sense module with the push streaming and positioning function; the linkage evidence scheduling platform sends a registration confirmation message without the determination information parameter to the remaining recorders. In the broadcast mode binding and registration scenario of the embodiment of the present invention, the linkage evidence scheduling platform flexibly determines the service law enforcement recorder through a preset algorithm, and can select the optimal device to provide the push streaming and positioning function according to actual needs. This mechanism not only improves the adaptability and flexibility of the system, but also ensures that linkage relationships are established quickly and efficiently in a multi-device environment. At the same time, by sending a registration confirmation message with adjudication information parameters to the selected recorder, and sending messages without adjudication information parameters to other recorders, the system clearly divides the responsibilities of the devices, avoids resource conflicts and redundant operations, and further improves the collaborative efficiency and overall system performance between the law enforcement recorder and the holster gun sensing module.

[0040] like Figure 6 As shown, in some embodiments, the linkage between the holster gun sensing module and the law enforcement recorder and the linkage evidence scheduling platform includes: after the holster gun sensing module detects the act of drawing a gun, it sends a trigger event to the law enforcement recorder; the law enforcement recorder starts local recording, and marks the local recording as an important video, and marks the event as a gun drawing event; for law enforcement recorders with WIFI / 4G / 5G functions, an alarm / streaming information is sent to the linkage evidence scheduling platform; the linkage evidence scheduling platform initiates a streaming command to the law enforcement recorder as needed to achieve real-time streaming of video and audio; the linkage evidence scheduling platform initiates a stop streaming command to the law enforcement recorder when necessary to terminate the real-time streaming of video and audio.

[0041] In a particularly preferred embodiment, further, when the linkage evidence dispatching platform is connected to the public security video surveillance network or the designated audio and video recording equipment, the linkage evidence dispatching platform also triggers the public security video surveillance network (such as "Skynet") camera or the designated audio and video recording equipment within the predetermined range of the law enforcement recorder according to the positioning information of the law enforcement recorder and the preset linkage rules to synchronize the recording, and integrate the relevant audio and video data into the same event record to enrich the on-site evidence chain. In this embodiment, the linkage evidence dispatching platform is connected to the public security video surveillance network or other audio and video recording equipment, and synchronizes the recording and data integration when the gun drawing behavior is detected and the law enforcement recorder is triggered. The present invention can realize all-round and multi-angle evidence collection at the law enforcement scene, and significantly improves the integrity and reliability of the evidence. This cross-device synchronous recording and data integration mechanism effectively enriches the on-site evidence chain. In addition, the introduction of this linkage mechanism also makes the command and dispatch in the law enforcement process more efficient, and provides a strong technical support for the rapid response and handling of various emergencies. In another particularly preferred embodiment, further, the linkage evidence dispatching platform also monitors the duration of the gun not being returned to the holster after being drawn, as transmitted by the law enforcement recorder. When the duration exceeds the preset threshold value, it is determined that the gun is robbed or stolen, and an alarm is initiated. In this embodiment, by detecting the duration of the gun not being returned after being drawn and determining that the gun is robbed or stolen, the linkage evidence dispatching platform can quickly and accurately identify and warn potential gun safety threats. This intelligent judgment mechanism based on time threshold effectively makes up for the shortcomings of traditional detection methods, avoids false alarms caused by misoperation or short-term gun drawing, and significantly improves the initiative and real-time nature of gun safety management. In addition, the timely initiation of the alarm function can quickly notify the command center and relevant personnel to take countermeasures, greatly enhancing the security assurance capabilities of the law enforcement scene.

[0042] An embodiment of the present invention also provides a method for coordinating the gun drawing detection and the law enforcement recorder-linked evidence collection and scheduling, which uses the gun drawing detection and the law enforcement recorder-linked evidence collection and scheduling of any of the aforementioned embodiments to achieve gun drawing detection and the law enforcement recorder-linked evidence collection and scheduling.

[0043] The system and method of the embodiment of the present invention are based on the gun sensing module accessories set on the holster, and the Internet of Things interconnection with the law enforcement recorder. When an important event of a gun being pulled out occurs, one or more law enforcement recorders are automatically triggered to record in binding mode or broadcast mode. Together with the pre-recorded video of the recorder, independent evidence marks can be formed before and after the gun is pulled out. In addition, fixed cameras of the public security video surveillance network (such as "Skynet") within a certain distance around can be triggered to record, further supplementing the recorder video information. Complete law enforcement audio and video evidence is provided for post-event restoration and evidence collection. The gun sensing module accessories can transmit real-time information through the 4G / 5G law enforcement recorder, and the gun is pulled out alarm and real-time audio and video streams are transmitted to the platform deployed in the center. It is convenient for the platform to quickly judge based on real-time information and give targeted measures or more effective command and dispatch. In addition, the present invention also proposes optimization and improvement in the high-precision detection design of the gun sensing module, the intelligent decision mechanism in the broadcast mode, and the real-time alarm function of the abnormal state of the gun, thereby further improving the integrity of evidence collection in the law enforcement process, the timeliness of system response, and the efficiency of on-site command and dispatch.

[0044] The specific embodiments of the present invention are further described below.

[0045] like Figure 1 As shown in the figure, the gun draw detection and law enforcement recorder linkage evidence dispatching system includes two parts: linkage evidence dispatching platform and intelligent law enforcement terminal. The intelligent law enforcement terminal includes a holster gun sensing module and a law enforcement recorder. The holster gun sensing module and the law enforcement recorder perform near-field communication such as Bluetooth. The holster gun sensing module may not be configured with remote communication functions (such as WIFI / 4G / 5G) and positioning modules to reduce weight and reduce costs. The holster gun sensing module has independent power supply capability and switch, and can be fixed to the side of the holster by 3M glue or other means. When the gun draw behavior occurs, this behavior can be detected and reported to the law enforcement recorder via Bluetooth.

[0046] like Figure 2 As shown, the holster gun sense module 2 is fixed on the holster 1, with a power switch 3, which is generally turned on by default after being fixed on the holster. The holster gun sense module 2 can be fixed on the side of the holster 1 by 3M glue or the like.

[0047] The logical function and structure of the holster gun sensor module are as follows: Figure 3As shown, it includes a PCB frequency detection component, an inductance signal digital converter, a main control module and a communication and protocol module. The PCB frequency detection component has a built-in inductance coil. When the metal part of the gun approaches or moves away, the electromagnetic coupling effect between the metal and the inductance coil causes the change of the inductance value, which in turn causes the oscillation frequency of the LC oscillation circuit included in the inductance signal digital converter to change; the inductance signal digital converter converts the inductance change into a digital signal and communicates with the main control module; the closer the gun metal is to the PCB frequency detection component, the smaller the inductance and the lower the frequency, and vice versa, the larger the inductance and the higher the frequency, thereby realizing the detection of the gun being pulled out. The main control module controls the communication and protocol module to realize Bluetooth communication with the law enforcement recorder, thereby realizing the detection of the gun being pulled out.

[0048] In addition to the functions specified by GAT / 947, positioning, and WIFI / 4G / 5G communication capabilities, the law enforcement recorder also has a Bluetooth protocol communication function with the holster gun sensing module, can bind to the holster gun sensing module or receive broadcast messages from the holster gun sensing module, and has a pre-recording function, which can be set to 1 second to 120 seconds. The triggered automatic recording is superimposed on the pre-recorded video to realize the local recording function and store it in the recorder. By introducing the pre-recording function in the law enforcement recorder and superimposing the triggered automatic recording, the present invention can complete the video recording before the gun drawing incident occurs, thereby effectively filling the gap in evidence caused by the traditional law enforcement recorder only starting to record from the time the event is triggered. This design can not only fully restore the key details before the incident, but also provide more comprehensive and coherent audio and video evidence for the law enforcement process, greatly enhancing the integrity and credibility of the law enforcement record.

[0049] It is also possible to push the law enforcement recorder's video and audio streams to the platform in the form of independent dual streams. The video stream and the recorder's local recording bit rate and resolution are independently configured. It is possible to push the stream without recording, or to record without pushing the stream, or to do both at the same time. It is also possible to send the platform a gun-drawing alarm and the recorder's own positioning information.

[0050] The binding of the holster gun sensing module and the law enforcement recorder can be one-to-one, and is operated by the law enforcement recorder menu. In common cases, the law enforcement recorder worn by the user (policeman) is bound to the gun sensing module accessory on his holster. The binding of the holster gun sensing module and the law enforcement recorder can also be a broadcast mode binding. If the law enforcement recorder within the near-field communication range of the holster gun sensing module has not been bound, it can receive the information of the holster gun sensing module.

[0051] In some embodiments, the gun holster gun sensor module does not communicate with the linkage evidence dispatch platform, and all information transmitted between the two is transmitted through the law enforcement recorder. If the law enforcement recorder is a general recorder without WIFI / 4G / 5G function, only local recording is triggered, and the subsequent local recording is returned through the file return module.

[0052] See also Figure 1 ,The linkage forensic dispatching platform includes the following modules: 1. Communication and protocol module In addition to the communication function with general law enforcement recorders, the communication and protocol module also has the function of transmitting the holster gun sensing module number and gun drawing detection information to the business linkage module, and receiving the law enforcement recorder that determines the streaming and real-time streaming instructions from the business linkage module.

[0053] 2. Registration module The registration module receives the number of the law enforcement recorder, the bound police officer information, and the registration information of the holster gun sensing module transmitted through the law enforcement recorder, the latter including the number of the holster gun sensing module.

[0054] In one-to-one binding mode, the registration message includes a pair of smart law enforcement terminals: the holster gun sensor module and the bound law enforcement recorder. In broadcast mode, the registration message includes a pair of smart law enforcement terminals, but there may be multiple registration messages, which are sent by all law enforcement recorders within the communication range of the holster gun sensor module.

[0055] 3. Positioning module The positioning module locates the law enforcement camera. In one-to-one binding mode, the positioning information also represents the positioning of the holster gun sensor module. In broadcast mode, the positioning information of the law enforcement camera that pulls the stream represents the positioning of the holster gun sensor module.

[0056] 4. Business linkage module The business linkage module is the core module of the linkage evidence dispatching platform, which is responsible for performing the following tasks: 1) In broadcast mode, determine which law enforcement recorder is to be used for streaming and use its positioning data as the data of the holster gun sensing module. In one embodiment, the determination method is based on the first-received principle, that is, the business linkage module first receives the message from the law enforcement recorder, and the law enforcement recorder is not bound to other gun sensors, then the law enforcement recorder is determined to provide streaming and positioning functions for the carried holster gun sensing module. Other algorithms can also be used, such as the proximity principle. The proximity principle means that the law enforcement recorder worn by the police officer is the closest to the preferred streaming or positioning law enforcement recorder, and the Euclidean distance can be calculated from the recorder positioning data for comparison.

[0057] 2) Determine whether the gun has been robbed or stolen, and initiate an alarm. If the time of drawing the gun transmitted by the law enforcement recorder exceeds the set threshold and is not returned (inserted into the holster), it is determined to be robbed or stolen, and an alarm is initiated on the platform.

[0058] 3) Send streaming instructions. If the law enforcement camera receives a signal that a gun is being drawn, an alarm is triggered on the platform, and the center staff’s streaming instructions are sent to the law enforcement camera to achieve real-time streaming of video and audio.

[0059] 4) If this platform is connected to a public security video surveillance network (such as "Skynet") platform, it can be linked with cameras in the public security video surveillance network (such as "Skynet") within a certain range of this recorder. If this platform is also connected to other video and audio recording devices, it can be linked with other video and audio recording devices within a certain range of the recorder.

[0060] 5) Provide data for the display of law enforcement cameras and holster gun sensor modules on the platform. If it is a one-to-one binding mode, the law enforcement camera and holster gun sensor module are displayed in pairs on the platform. If it is a broadcast mode, a holster gun sensor module and multiple law enforcement cameras that receive the broadcast are displayed, and the law enforcement cameras that are automatically pushed by the business linkage module are specially marked.

[0061] 5. File upload / collection module The file return / collection module is mainly responsible for collecting the audio and video data recorded by the law enforcement recorder and storing the collected audio and video files.

[0062] (III) Workflow The workflow includes: the binding registration process of the holster gun sensing module and the law enforcement recorder, including one-to-one mode and broadcast mode; the linkage process of the holster gun sensing module and the law enforcement recorder.

[0063] Figure 4 The one-to-one mode gun holster gun sensor module and law enforcement recorder binding registration process is shown. The following describes the process according to the message sending situation, including: Message (1): The law enforcement recorder displays the holster gun sensing modules that can be searched through near field communication, manually selects a holster gun sensing module (such as the holster gun sensing module worn by the user of the law enforcement recorder), and sends a binding message to it.

[0064] Message (2): After receiving the message, the gun sensor module sends a binding confirmation message to form a binding.

[0065] Message (3): The law enforcement camera is registered with the platform, with the bound holster gun sensor module, including its serial number and its location information (using the location data of the law enforcement camera).

[0066] Message (4): The platform sends back a registration confirmation, and the registration is successful. If a gun is subsequently drawn, this law enforcement camera will be the default communication, streaming and push streaming camera.

[0067] Figure 5 The following shows the registration process of binding the gun sensor module and the law enforcement recorder in broadcast mode. The following describes the process according to the message sending situation, including: Message (1): The holster gun sensor module sends a broadcast message to all law enforcement cameras 1 to n that can be searched by near field communication, including its own serial number.

[0068] Message (2): Each law enforcement camera sends a registration message to the platform. The registration message contains information about the gun sensor module to be bound, including its serial number and its location information (using the location data of the law enforcement camera), as well as a flag indicating that this registration message is triggered by a broadcast message.

[0069] Message (3): After the platform linkage module receives the registration message from each law enforcement recorder, it finds that it is a registration message triggered by a broadcast message, and uses a software algorithm to determine the law enforcement recorder that will subsequently serve this holster module. When the algorithm is determined according to the first-come-first-served principle, after receiving the first message from the law enforcement recorder, if this law enforcement recorder has not been bound to the holster module, it is determined that this law enforcement recorder provides positioning, push streaming and pull streaming services for this holster module; and so on. In addition, other determination algorithms can also be used. Next, the platform sends a registration confirmation message to the law enforcement recorder determined to be bound, carrying the determination information parameters.

[0070] Message (4): The platform also sends a registration confirmation message to the remaining law enforcement cameras, without carrying the ruling information parameter.

[0071] Figure 6 The linkage process of the holster gun sensor module, the law enforcement recorder and the linkage evidence collection and dispatching platform is shown. The following describes the process according to the message sending situation, which specifically includes: Message (1): After detecting the gun being drawn, the gun sensor module of the holster sends a trigger event to the law enforcement recorder (one-to-one mode or broadcast mode). All law enforcement recorders that receive the message start local recording and mark the local recording as an important video and the event as a gun drawing event. If the law enforcement recorder is a general recorder without WIFI / 4G / 5G function, the process ends here. The wearer can stop the local recording of all law enforcement recorders manually. The video and audio information of all law enforcement recorders is collected by the file return / collection module and uploaded to the platform with the important video mark and the gun drawing event mark.

[0072] Message (2): If it is a law enforcement recorder with WIFI / 4G / 5G function, the bound law enforcement recorder or the adjudicated law enforcement recorder (assuming it is law enforcement recorder 1) sends the alarm / streaming information through the platform communication module to the platform business association module.

[0073] Message (3): If the business association module needs to pull the stream, it will initiate a stream pulling instruction to law enforcement recorder 1.

[0074] Message (4): If the business association module needs to stop pulling the stream, it will send a stop pulling stream instruction to law enforcement recorder 1.

[0075] In summary, the present invention has the following significant advantages: The present invention realizes linkage with the law enforcement recorder and the linkage evidence dispatching platform by adding a gun-sensing detection module with near-field communication capability to the holster, which is efficient, real-time and low-cost. With the help of the audio and video evidence collection function of the law enforcement recorder, combined with the pre-recording function, it can fully record the on-site situation before and after the gun is drawn, and mark important videos and gun-drawing events, which is convenient for subsequent on-demand retrieval and restoration of the scene. In addition, by utilizing the WIFI / 4G / 5G communication capability of the law enforcement recorder, the alarm information and dual-stream audio and video can be transmitted to the command center or the gun management center platform in real time. The platform can quickly judge and take targeted measures based on real-time information to achieve efficient command and dispatch. At the same time, the present invention can also link the law enforcement recorder with the public security video surveillance network (such as "Skynet") and other audio and video recording equipment to further expand the scope of on-site evidence collection, enrich evidence information, and provide comprehensive support for law enforcement activities. In addition, the preferred embodiments of the present invention also propose optimization and improvements in the high-precision detection design of the gun sensing module, the intelligent judgment mechanism under the broadcast mode, and the real-time alarm function of the abnormal status of the gun, thereby further improving the integrity of evidence collection in the law enforcement process, the timeliness of system response and the efficiency of on-site command and dispatch.

[0076] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A gun drawing detection and law enforcement recorder linkage evidence collection dispatching system, characterized in that: include: The holster gun sensing module is installed on the holster to detect whether the gun is pulled out of the holster and to perform near-field communication with the law enforcement recorder; At least one law enforcement recorder, used to receive the gun draw detection signal from the gun sensor module of the holster, automatically start the video and audio recording function, and establish a communication connection with the linkage evidence dispatching platform according to a preset communication protocol; The linkage evidence collection and dispatching platform includes a communication and protocol module, a registration module, a positioning management module, a business linkage module, and a file return / collection module; The communication and protocol module is used to receive the registration information and gun drawing detection information sent by the law enforcement recorder, and transmit the information to the registration module and the business linkage module; The registration module is used to receive and store the registration information of the law enforcement recorder and the holster gun sensing module, including their serial numbers and positioning information; The positioning management module is used to perform positioning management on the law enforcement recorder and provide location data support for the business linkage module based on the positioning information; The business linkage module is used to initiate an alarm based on the received gun drawing detection information and positioning information, and send a streaming instruction to the law enforcement recorder through the communication and protocol module when necessary; the law enforcement recorder sends the video and audio data to the linkage evidence dispatching platform in real time according to the streaming instruction, so that the linkage evidence dispatching platform can quickly analyze and command and dispatch; The file transmission / collection module is used to manage the transmission and collection of audio and video data recorded by the law enforcement recorder, and store the collected audio and video files; Among them, the holster gun sensing module and the law enforcement recorder are bound and registered in a one-to-one mode or a broadcast mode, and the law enforcement recorder and the linkage evidence collection and dispatching platform exchange information through the communication and protocol module to achieve real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid analysis and command and dispatch of the platform.

2. The system according to claim 1, characterized in that The holster gun sensing module includes a PCB frequency detection component, an inductance signal digital converter, a main control module and a communication and protocol module; wherein the PCB frequency detection component is arranged close to the gun placement space in the holster, and the PCB frequency detection component has a built-in inductance coil. When the metal part of the gun approaches or moves away, the electromagnetic coupling effect between the metal and the inductance coil causes a change in the inductance value, thereby causing a change in the oscillation frequency of the LC oscillation circuit included in the inductance signal digital converter; the inductance signal digital converter converts the frequency change into a digital signal and communicates with the main control module; the main control module is used to control the communication and protocol module to realize Bluetooth communication with the law enforcement recorder, thereby realizing the detection of the gun pulling behavior.

3. The system according to claim 1, characterized in that One-to-one mode binding and registration includes: The law enforcement camera searches and selects a holster gun sensing module through near field communication; After receiving the selected information, the gun holster gun sensing module sends a binding confirmation message to the law enforcement recorder; The law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linked evidence collection and dispatching platform sends a registration confirmation message back to the law enforcement recorder to complete the one-to-one binding registration.

4. The system according to claim 1, characterized in that Broadcast mode binding and registration includes: The holster gun sensor module sends a broadcast message to all law enforcement cameras within the near field communication range, including its own serial number; Each law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linkage evidence dispatching platform determines the law enforcement recorder for subsequent services according to a preset algorithm, and sends a registration confirmation message carrying a determination information parameter to the law enforcement recorder; wherein the linkage evidence dispatching platform determines that the law enforcement recorder that first receives its message and has not yet been bound provides the holster gun sense module with the push streaming and positioning functions, or determines that the law enforcement recorder that is closest to the holster gun sense module in terms of positioning distance provides the holster gun sense module with the push streaming and positioning functions; The linkage evidence collection dispatching platform sends a registration confirmation message without a ruling information parameter to the remaining recorders.

5. The system according to claim 1, characterized in that The linkage between the holster gun sensing module, the law enforcement recorder and the linkage evidence collection and dispatching platform includes: After the gun sensor module detects the action of drawing the gun, it sends a trigger event to the law enforcement camera; The law enforcement camera starts local recording and marks the local recording as important video and the event as a gun-drawing incident; For law enforcement recorders with WIFI / 4G / 5G functions, send alarm / streaming information to the linkage evidence collection and dispatching platform; The linkage evidence collection dispatching platform initiates streaming instructions to the law enforcement recorder as needed to achieve real-time streaming of video and audio; The linkage evidence collection dispatching platform sends a stop streaming command to the law enforcement recorder when necessary, terminating the real-time streaming of video and audio; Furthermore, when the linkage evidence dispatching platform is connected to the public security video surveillance network or other audio and video recording equipment, the linkage evidence dispatching platform triggers the public security video surveillance network camera or designated audio and video recording equipment within the predetermined range of the law enforcement recorder to perform synchronous recording according to the positioning information of the law enforcement recorder and the preset linkage rules, and integrates the relevant audio and video data into the same event record to enrich the on-site evidence chain.

6. The system according to any one of claims 1 to 4, characterized in that: The linkage evidence collection and dispatching platform detects the duration of time during which the gun is not returned to the holster after being drawn, as transmitted by the law enforcement recorder. When the duration exceeds a preset threshold value, it is determined that the gun is robbed or stolen, and an alarm is initiated.

7. A method for dispatching gun drawing detection and law enforcement recorder-linked evidence collection, characterized in that: The following steps are involved: A holster gun sensing module is installed on the holster, and the holster gun sensing module is used to detect whether the gun is pulled out of the holster and perform near field communication with the law enforcement recorder; At least one law enforcement recorder receives a gun draw detection signal from the gun sensor module of the holster, automatically starts the video and audio recording function, and establishes a communication connection with the linkage evidence dispatching platform according to a preset communication protocol; The linkage evidence collection and dispatching platform receives the registration information and gun drawing detection information sent by the law enforcement recorder, performs positioning management, initiates an alarm based on the received information, and issues a streaming command to the law enforcement recorder when necessary; The law enforcement recorder sends the video and audio data to the platform in real time according to the streaming instructions issued by the joint evidence collection and dispatching platform, so that the platform can conduct rapid analysis and command and dispatch; The linkage evidence collection and dispatching platform manages the transmission and collection of files, including the collection of audio and video materials recorded by law enforcement recorders, and the storage of collected audio and video files; Among them, the holster gun sensing module and the law enforcement recorder are bound and registered in a one-to-one mode or a broadcast mode, and the law enforcement recorder and the linkage evidence collection and dispatching platform exchange information through the communication and protocol module to achieve real-time detection of gun drawing events, automatic recording and transmission of audio and video evidence, and rapid analysis and command and dispatch of the platform.

8. The method according to claim 7, characterized in that The one-to-one mode binding and registration process includes the following steps: The law enforcement camera searches and selects a holster gun sensing module through near field communication; After receiving the selected information, the gun holster gun sensing module sends a binding confirmation message to the law enforcement recorder; The law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linked evidence collection and dispatching platform sends a registration confirmation message back to the law enforcement recorder to complete the one-to-one binding registration.

9. The method according to claim 7, characterized in that: The broadcast mode binding and registration process includes the following steps: The holster gun sensor module sends a broadcast message to all law enforcement cameras within the near field communication range, including its own serial number; Each law enforcement recorder sends a registration message to the linkage evidence collection and dispatching platform, including the serial number of the gun sensor module of the holster and its location information; The linkage evidence dispatching platform determines the law enforcement recorder for subsequent services according to a preset algorithm, and sends a registration confirmation message carrying a determination information parameter to the law enforcement recorder; wherein the linkage evidence dispatching platform determines that the law enforcement recorder that first receives its message and has not yet been bound provides the holster gun sense module with the push streaming and positioning functions, or determines that the law enforcement recorder that is closest to the holster gun sense module in terms of positioning distance provides the holster gun sense module with the push streaming and positioning functions; The linkage evidence collection dispatching platform sends a registration confirmation message without a ruling information parameter to the remaining recorders.

10. The method according to claim 7, characterized in that The linkage process between the holster gun sensing module, the law enforcement recorder and the linkage evidence collection and dispatching platform includes the following steps: After the gun sensor module detects the action of drawing the gun, it sends a trigger event to the law enforcement camera; The law enforcement camera starts local recording and marks the local recording as important video and the event as a gun-drawing incident; For law enforcement recorders with WIFI / 4G / 5G functions, send alarm / streaming information to the linkage evidence collection and dispatching platform; The linkage evidence collection dispatching platform initiates streaming instructions to the law enforcement recorder as needed to achieve real-time streaming of video and audio; The linkage evidence collection dispatching platform sends a stop streaming command to the law enforcement recorder when necessary, terminating the real-time streaming of video and audio; Furthermore, when the linkage evidence dispatching platform is connected to the public security video surveillance network or other audio and video recording equipment, the linkage evidence dispatching platform triggers the public security video surveillance network camera or designated audio and video recording equipment within the predetermined range of the law enforcement recorder to perform synchronous recording according to the positioning information of the law enforcement recorder and the preset linkage rules, and integrates the relevant audio and video data into the same event record to enrich the on-site evidence chain.

Images