Law enforcement recorder

Abstract

The utility model discloses a law enforcement recorder which comprises a shell, a storage battery and a master control module are arranged in the shell, an audio module, a radio frequency module and an antenna module are further arranged in the shell, a PTT key is arranged on the shell, and the PTT key, the audio module, the radio frequency module and the antenna module are all electrically connected with the master control module. A display screen is arranged on the front face of the shell, a camera and a light supplementing lamp are arranged on the back face of the shell, and the display screen, the camera and the light supplementing lamp are electrically connected with the main control module. According to the utility model, the main control module, the audio module, the radio frequency module and the antenna module are integrated, so that the system has a talkback function, and law enforcement officers can conveniently communicate and coordinate in the law enforcement process. Meanwhile, the law enforcement recorder also has the functions of recording, positioning, high-definition camera shooting, loss prevention, data leakage prevention, alarm and the like, and is a high-performance law enforcement recorder.

Description

Technical Field

[0001] The utility model relates to the technical field of intercom equipment, in particular to a law enforcement recorder. Background Art

[0002] Law enforcement recorders can record images, sounds, and environments during the law enforcement process. They are widely used in public security law enforcement, traffic law enforcement, urban management law enforcement, industrial and commercial law enforcement, and other fields. They can effectively supervise law enforcement behavior and ensure fair law enforcement. At the same time, they also provide strong support for evidence collection during the law enforcement process.

[0003] In the prior art, the utility model patent with patent number ZL201820136428.2 discloses a law enforcement recorder with 4G remote function, which includes a law enforcement recorder body, a camera and a display on the law enforcement recorder body, and a law enforcement recorder controller in the law enforcement recorder body. The camera and the display are electrically connected to the law enforcement recorder controller. The law enforcement recorder controller is connected to a mobile phone APP terminal and a remote control computer through a 4G wireless network, and the remote computer is connected to a wired network; the law enforcement recorder controller includes a single-chip microcomputer, and an input module, an output module, a memory, a GPS positioning module, a power supply module and a data transmission device are connected to the single-chip microcomputer, and the data transmission device includes a 4G wireless communication module; the law enforcement recorder controller is connected to the mobile phone APP terminal and the remote control computer respectively through the 4G wireless communication module.

[0004] The law enforcement recorder provided by the above patent has multiple functions such as video recording, display, and positioning, but it cannot conduct intercom, which makes it inconvenient for law enforcement personnel to communicate and coordinate conveniently during the law enforcement process, and needs further improvement. Utility Model Content

[0005] The purpose of the utility model is to provide a law enforcement recorder, aiming to improve the problem that existing law enforcement recorders cannot perform intercom, which makes it inconvenient for law enforcement personnel to communicate and coordinate conveniently during the law enforcement process.

[0006] The utility model is achieved in this way:

[0007] A law enforcement recorder includes a shell, wherein a battery and a main control module are provided in the shell, an audio module, a radio frequency module and an antenna module are also provided in the shell, a PTT button is provided on the shell, and the PTT button, audio module, radio frequency module and antenna module are all electrically connected to the main control module; a display screen is provided on the front of the shell, and a camera and a fill light are provided on the back of the shell, and the display screen, camera and fill light are also electrically connected to the main control module.

[0008] Furthermore, a positioning module is additionally provided in the housing, and the positioning module is electrically connected to the main control module.

[0009] Furthermore, a communication module is additionally provided in the shell, and the communication module is also electrically connected to the main control module. The main control module is communicated with the smart phone through the communication module. The smart phone is provided with a control APP bound to the law enforcement recorder. The control APP has a parameter setting page module and a position display module. The parameter setting page module is used to set the intercom frequency of the law enforcement recorder, and the position display module is used to view the location of the bound law enforcement recorder.

[0010] Furthermore, a button group is provided on the front of the shell, and the button group is electrically connected to the main control module; the button group is located on the lower side of the display screen, and the button group includes a PTT button, a shooting button, a fill light on / off button and a volume adjustment button.

[0011] Furthermore, a switch button and a fingerprint identifier are provided on the side of the shell, and the switch button and the fingerprint identifier are also electrically connected to the main control module.

[0012] Furthermore, a camera groove is provided on the back of the shell, the camera damping is hinged in the camera groove, and the camera can be rotated forward and backward to adjust the angle.

[0013] Furthermore, the camera groove is arranged near the upper end of the shell, and a plurality of fill lights are provided, and fill lights are provided on both the left and right sides of the camera groove.

[0014] Furthermore, a support groove is provided on the back of the shell, and the support groove is located on the lower side of the camera groove. The upper end of the support groove is damped and hinged with a support plate, and the support plate can be rotated back and forth. The support plate can be rotated to a storage state where it is completely located in the support groove.

[0015] Furthermore, a hand buckle groove is provided in the middle of the lower end of the support plate, and an anti-slip sleeve is provided on the lower end of the support plate, and the anti-slip sleeve avoids the hand buckle groove.

[0016] Furthermore, a button recess is provided on the bottom wall of the support groove, an SOS button is provided in the recess, the SOS button is completely located in the button recess, and the SOS button is electrically connected to the main control module.

[0017] Compared with existing technologies, this new device offers the following advantages: It integrates a main control module, audio module, radio frequency module, and antenna module, enabling intercom functionality, facilitating convenient communication and coordination between law enforcement officers. Furthermore, it also features recording, positioning, high-definition video, loss prevention, data leakage prevention, and an alarm, making it a high-performance law enforcement recorder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the electric control structure block diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the front side of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the back side of the support plate of the utility model when it is unfolded;

[0021] Figure 4 It is a front view of the utility model;

[0022] Figure 5 It is a rear view of the utility model;

[0023] Figure 6 It is a rear view of the utility model when the support plate is removed.

[0024] In the figure: 1. Shell; 2. Display; 3. Button group; 4. Camera; 5. Fill light; 6. Switch button; 7. Fingerprint reader; 8. Support groove; 9. Support plate; 10. Anti-slip cover; 11. SOS button. DETAILED DESCRIPTION

[0025] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0027] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, a law enforcement recorder comprises a housing 1, which houses a battery, a main control module, an audio module, a radio frequency module, and an antenna module. The audio module, radio frequency module, and antenna module are all electrically connected to the main control module, and the battery provides power to each module. The battery is a rechargeable lithium battery. A charging port is located at the lower end of the housing 1, electrically connected to the main control module. The battery can be charged by connecting a data cable, a power adapter, or an external power source to the charging port. The front of the housing 1 houses a display 2 and a button group 3, located below the display 2. The back of the housing 1 houses a camera 4 and a fill light 5. The display 2, button group 3, camera 4, and fill light 5 are also electrically connected to the main control module. The button group 3 includes a PTT button, a capture button, a fill light on / off button, and a volume control button. The PTT button is a talkback button, the capture button is used to start and stop the camera 4, the fill light on / off button is used to turn the fill light 5 on and off, and the volume control button is used to adjust the volume. Camera 4 is located on the back of housing 1, near the top, and in the center of housing 1 in the left-right direction. Four fill lights 5 are provided, two on each side of camera 4. Camera 4 is a high-definition camera, and fill lights 5 provide supplemental illumination when light levels are low, effectively ensuring high-quality photography.

[0028] The main control module includes a circuit board and a microprocessor and memory arranged on the circuit board. The microprocessor is the core control unit of the law enforcement recorder and is responsible for coordinating the work of each module. The microprocessor can realize functions such as channel selection, volume adjustment, power control, and signal encoding / decoding. The microprocessor can use the MT6762 microprocessor produced by MediaTek, which has an octa-core 64-bit, 2.0GHz CPU and has the advantages of low power consumption. It also has strong computing and image processing capabilities. It supports full HD video recording with a resolution of 1080p and 30 frames per second, uses the h.264 encoding protocol, is equipped with 1300w camera pixels, and also has a built-in WiFi module to support 4G real-time remote monitoring and other functions. By setting up the main control module, the installation of a dedicated law enforcement APP can be achieved.

[0029] The audio module includes a microphone, a speaker, and an audio amplifier. The microphone is used to receive the user's voice signal and convert it into an electrical signal. The performance of the microphone directly affects the quality of the audio signal. A good microphone can provide clear and accurate voice input. An electret microphone can be used, which has the advantages of small size, high sensitivity, and low cost. A row of micro-holes for collecting sound is set on the front of the shell 1 corresponding to the position of the microphone. This row of micro-holes is located between the display screen 2 and the key group 3. Figure 4As shown. Dustproof cotton is set on the inner side of the micro hole to prevent external dust from entering the housing 1 through the micro hole. The speaker is used to convert the demodulated audio signal into sound, allowing the user to hear the other party's speech. A row of sound holes is set on the back of the housing 1 corresponding to the position of the speaker. This row of sound holes is located below the camera 4, as shown in the figure. Figure 5 and Figure 6 The audio amplifier amplifies the audio signal input from the microphone to meet the requirements of the modulator. At the same time, it is used to amplify the demodulated audio signal to drive the speaker.

[0030] In addition, the microphone of the audio module can be used in conjunction with the main control module to realize the recording function.

[0031] The RF module consists of a transmitter and receiver. The transmitter includes a power amplifier, a RF oscillator, and a modulator. The power amplifier amplifies the modulated signal to meet the antenna transmission requirements. A higher-power amplifier allows for longer signal transmission distances, but also consumes more power. The RF oscillator generates a RF signal at a specific frequency, which serves as a carrier signal to modulate the audio signal. The intercom functions of different body cameras operate in different frequency ranges to avoid mutual interference. The modulator superimposes the audio signal onto the RF carrier, and the modulated signal is transmitted through the antenna. Common modulation methods include frequency modulation (FM) and amplitude modulation (AM). The receiver includes a low-noise amplifier, a mixer, and a demodulator. The low-noise amplifier amplifies the weak RF signal while reducing noise interference and improving the signal-to-noise ratio. The performance of the low-noise amplifier directly affects the receiver sensitivity of the walkie-talkie. The mixer mixes the received RF signal with the signal generated by the local oscillator to generate an intermediate frequency (IF) signal. The relatively low frequency of the IF signal facilitates subsequent processing and amplification. The demodulator demodulates the IF signal to recover the original audio signal. In contrast to the modulation process in the transmitting part, the demodulator separates the audio signal from the carrier according to the modulation method.

[0032] The antenna module includes the antenna and antenna matching circuit. The antenna transmits and receives RF signals, and its performance directly affects the communication range and signal quality of the intercom function. The antenna matching circuit matches the impedance between the antenna and the RF module to improve signal transmission efficiency. The design of the antenna matching circuit should take into account the characteristics of the antenna and the requirements of the RF module to achieve optimal matching.

[0033] like Figure 1As shown, a positioning module and a communication module are provided in the housing 1, and both the positioning module and the communication module are electrically connected to the main control module. The positioning module can use the Beidou positioning chip, and the positioning module is used to locate the position of the law enforcement recorder, and has functions such as anti-loss and positioning. The communication module includes a 4G communication module, and the main control module is connected to the smartphone through the 4G communication module. The smartphone is provided with a control APP bound to the law enforcement recorder. The control APP has a parameter setting page module and a position display module. The parameter setting page module is used to set the intercom frequency of the law enforcement recorder, and the position display module is used to view the position of the bound law enforcement recorder. The communication module of some law enforcement recorders also includes a Bluetooth chip, which can be used for near-ground communication.

[0034] like Figure 1-Figure 3 As shown, the side of the housing 1 is provided with an on / off button 6 and a fingerprint reader 7, both of which are electrically connected to the main control module. The on / off button 6 can be used to turn the device on and off, and to open and close the display 2. The fingerprint reader 7 provides the law enforcement recorder with fingerprint recognition capabilities. Only after the fingerprint recognition is passed can the law enforcement recorder be used, ensuring real-name use of the law enforcement recorder. It also prevents internal data leakage if the law enforcement recorder is lost, making the use of the law enforcement recorder more secure.

[0035] like Figure 3 、 Figure 5 and Figure 6 As shown, the back of the housing 1 is provided with a camera recess and a support recess 8. The camera 4 is damped and hinged in the camera recess, with the hinge axis positioned horizontally, allowing the camera 4 to rotate forward and backward for angle adjustment. The support recess 8 is located below the camera recess. A support plate 9 is damped and hinged at its upper end, allowing for forward and backward rotation. The support plate 9 can have two positions: an extended position, tilted to support the housing 1, and a retracted position, fully seated in the support recess 8. This technical solution allows the present invention to be placed on a countertop for use, providing a stable placement and allowing for adjustment of the shooting angle to ensure accurate photography. A hand-clip groove is provided in the middle of the lower end of the support plate 9, facilitating the release of the support plate 9 from the retracted position. A non-slip sleeve 10 is provided on the lower end of the support plate 9, avoiding the hand-clip groove. The non-slip sleeve 10 is made of silicone and provides a more stable position when placed on a countertop.

[0036] like Figure 1 and Figure 6 As shown, a button recess is provided on the bottom wall of the support groove 8. An SOS button 11 is installed in the recess and is electrically connected to the main control module. The SOS button 11 is a single-touch alarm button used in emergency situations. The SOS button 11 is completely located in the button recess, effectively preventing accidental contact when not in use.

[0037] In summary, the integrated main control module, audio module, radio frequency module, and antenna module provide this device with an intercom function, facilitating convenient communication and coordination between law enforcement officers. Furthermore, this device also features recording, positioning, high-definition video, loss prevention, data leakage prevention, and an alarm, making it a high-performance law enforcement recorder.

[0038] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A law enforcement recorder, comprising a housing, wherein a battery and a main control module are provided in the housing, characterized in that: The shell is also provided with an audio module, a radio frequency module and an antenna module, and a PTT button is provided on the shell. The PTT button, audio module, radio frequency module and antenna module are all electrically connected to the main control module; a display screen is provided on the front of the shell, and a camera and a fill light are provided on the back of the shell. The display screen, camera and fill light are also electrically connected to the main control module.

2. A law enforcement recorder according to claim 1, characterized in that: A positioning module is further provided in the housing, and the positioning module is electrically connected to the main control module.

3. A law enforcement recorder according to claim 2, characterized in that: A communication module is also provided in the shell, and the communication module is also electrically connected to the main control module. The main control module is communicated with the smartphone through the communication module. The smartphone is provided with a control APP bound to the law enforcement recorder. The control APP has a parameter setting page module and a position display module. The parameter setting page module is used to set the intercom frequency of the law enforcement recorder, and the position display module is used to view the location of the bound law enforcement recorder.

4. A law enforcement recorder according to claim 1, characterized in that: A button group is provided on the front of the shell, and the button group is electrically connected to the main control module; the button group is located on the lower side of the display screen, and the button group includes a PTT button, a shooting button, a fill light on / off button and a volume adjustment button.

5. The law enforcement recorder according to claim 1, characterized in that: A switch button and a fingerprint identifier are provided on the side of the shell, and the switch button and the fingerprint identifier are also electrically connected to the main control module.

6. The law enforcement recorder according to claim 1, characterized in that: A camera groove is provided on the back of the shell, and the camera damping is hinged in the camera groove. The camera can be rotated forward and backward to adjust the angle.

7. The law enforcement recorder according to claim 6, characterized in that: The camera groove is arranged close to the upper end of the shell, and a plurality of fill lights are arranged, and fill lights are arranged on both the left and right sides of the camera groove.

8. The law enforcement recorder according to claim 6, characterized in that: A support groove is also provided on the back of the shell, and the support groove is located on the lower side of the camera groove. The upper end of the support groove is damped and hinged with a support plate, and the support plate can be rotated back and forth. The support plate can be rotated to a storage state that is completely located in the support groove.

9. The law enforcement recorder according to claim 8, characterized in that: A hand buckle groove is provided at the middle part of the lower end of the support plate, and an anti-slip sleeve is provided on the lower end of the support plate, and the anti-slip sleeve avoids the hand buckle groove.

10. The law enforcement recorder according to claim 8, characterized in that: A button recessed hole is provided on the bottom wall of the supporting groove, an SOS button is provided in the recessed hole, the SOS button is completely located in the button recessed hole, and the SOS button is electrically connected to the main control module.

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