Double-T-card split intelligent recorder terminal system and recorder

Abstract

The invention discloses a double-T-card split intelligent recorder terminal system and a recorder, a second T-card storage module is added in an original single-T-card recorder terminal system, the second T-card storage module can be directly accessed to an SPI interface of a main control module after voltage transformation of a signal through a voltage transformation circuit, and second T-card storage is realized. The second T card storage module can be accessed to independently store a secret key without making a new adjustment design on an original CPU interface of the main control module, and when a terminal application layer of the split intelligent recorder needs to use a software secret key, a VPN certificate, an APK secret key and an upper-layer application secret key stored in the second T card storage module can be directly extracted from the second T card storage module, so that the split intelligent recorder is convenient to use. The problem of file missing caused by errors in a common file mixed storage interval is prevented, user certificate management is facilitated, and the security level of the terminal is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of law enforcement recorders, and more specifically, mainly to a dual-T card split intelligent recorder terminal system and a recorder. Background Art

[0002] The law enforcement recorder is a chest-mounted recorder that fully records the entire process of law enforcement or operation. When the law enforcement recorder is turned on, the front-end camera of the law enforcement recorder records in real time and sends the video to the display screen at the back end of the law enforcement recorder for visual display. Existing law enforcement recorders are generally designed with a single T card for storage functions, and law enforcement recorders usually require security restrictions and protection. The operation, communication, and use of law enforcement recorders all require encryption. When the application layer of the recorder needs to use the software key, the password needs to be copied to the single T card storage area separately, which is mixed with the single T card storage file, resulting in errors in terminal operation and significant losses caused by file loss. Therefore, further improvements need to be made to the key storage of law enforcement recorders. Summary of the invention

[0003] The purpose of the present invention is to provide a dual T card split intelligent recorder terminal system and a recorder in view of the above-mentioned shortcomings, so as to solve the technical problems such as the mixed storage of keys and ordinary audio and video files in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a dual-T card split intelligent recorder terminal system, including a main control module, a wireless communication positioning module, a power module, and an image and audio acquisition module, wherein the wireless communication positioning module, the power module, and the image and audio acquisition module are electrically connected to the main control module respectively, and further includes:

[0006] A first T card storage module, electrically connected to the main control module, for storing image and audio monitoring data;

[0007] The second T card storage module is electrically connected to the main control module and is used to store VPN certificates, APK keys, and upper layer application keys;

[0008] When the application layer of the split intelligent recorder terminal needs to use the software key, the key can be directly extracted from the second T card storage module.

[0009] Furthermore, the second T card storage module is electrically connected to the main control module through a voltage conversion circuit and then through an SPI interface.

[0010] Furthermore, the voltage transformation circuit includes a voltage transformation module U7, the second T card storage module is connected in parallel with the capacitor C18 and then electrically connected to the I N4 pin of the voltage transformation module U7, and the other end of the capacitor C18 is grounded; the SPI interface is connected in parallel with the resistor R16 and then electrically connected to the EN3 pin of the voltage transformation module U7, and the other end of the resistor R16 is grounded; the OUT1 pin of the voltage transformation module U7 is connected in parallel with the capacitor C19 and then electrically connected to the main control module through the SPI interface, and the other end of the capacitor C19 is connected in parallel with the GND2 pin and the GND5 pin of the voltage transformation module U7 and then grounded.

[0011] Furthermore, the size of C18 is 1UF, the size of C19 is 1UF, and the size of resistor R16 is 10KΩ.

[0012] Furthermore, it also includes a display module and a control module, which are electrically connected to the main control module respectively. The display module is used to view terminal graphics acquisition and device status, and the control module is used to input terminal control signals.

[0013] Furthermore, the wireless communication positioning module is a full-network wireless communication positioning module, including a full-network antenna, a full-network card socket, a GPS module and a Beidou positioning module.

[0014] In addition, a recorder is provided, which includes the dual T card split intelligent recorder terminal system described in any of the above items, a camera and a microphone are arranged on the front of the recorder, and a display screen and a charging port are arranged on the back of the recorder, and the camera, microphone, display screen and charging port are electrically connected to the dual T card split intelligent recorder terminal system.

[0015] Furthermore, a back clip is provided on the back of the recorder for fixing the recorder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: a second T card storage module is added to the original single T card recorder terminal system, and the second T card storage module can be directly connected to the main control module after the signal is transformed by the transformer circuit. Since the SPI signal voltage of the main control module is 1.8V, and the voltage of the T card storage module is 3.3V, it is necessary to connect the second T card storage module through the transformer circuit to realize the second T card storage, and there is no need to make new adjustments to the original main control module CPU interface. The second T card storage module can be connected to store the key separately. When the software key is needed in the application layer of the split intelligent recorder terminal, the stored VPN certificate, APK key, and upper-layer application key can be directly extracted from the second T card storage module to prevent the problem of file missing caused by errors in the storage interval mixed with ordinary files, which is convenient for user certificate management and improves the security level of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a block diagram of the dual T card split intelligent recorder terminal system in an embodiment of the present invention;

[0018] Figure 2 Schematic diagram of a voltage conversion circuit in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] refer to Figure 1 As shown, an embodiment of the present invention is a dual T card split intelligent recorder terminal system, which includes a main control module, a wireless communication positioning module, a power module, and an image and audio acquisition module. The wireless communication positioning module, the power module, and the image and audio acquisition module are electrically connected to the main control module respectively. Importantly, it also includes a first T card storage module, which is electrically connected to the main control module and is used to store image and audio monitoring data; a second T card storage module is electrically connected to the main control module and is used to store VPN certificates, APK keys, and upper-layer application keys; when the software key is needed in the application layer of the split intelligent recorder terminal, the key can be directly extracted from the second T card storage module.

[0021] In some embodiments, the second T card storage module is electrically connected to the main control module through the SPI interface after passing through the voltage conversion circuit. The normal main control module has one reserved interface for accessing the communication card and one for accessing the T card storage module. If you want to add another T card storage module, you need to make new adjustments to the existing main control module. The second T card storage module can be directly connected to the main control module after passing through the voltage conversion circuit. Since the SPI signal voltage of the main control module is 1.8V, and the voltage of the T card storage module is 3.3V, it is necessary to access the second T card storage module through the voltage conversion circuit, and there is no need to make adjustments to the main control module.

[0022] In some embodiments, reference Figure 2 As shown, the voltage conversion circuit includes a voltage conversion module U7, a second T card storage module is connected in parallel with a capacitor C18 and then electrically connected to the IN4 pin of the voltage conversion module U7, and the other end of the capacitor C18 is grounded; the SPI interface is connected in parallel with a resistor R16 and then electrically connected to the EN3 pin of the voltage conversion module U7, and the other end of the resistor R16 is grounded; the OUT1 pin of the voltage conversion module U7 is connected in parallel with a capacitor C19 and then electrically connected to the main control module through the SPI interface, and the other end of the capacitor C19 is connected in parallel with the GND2 pin and the GND5 pin of the voltage conversion module U7 and then grounded.

[0023] In some embodiments, the size of C18 is 1UF, the size of C19 is 1UF, and the size of resistor R16 is 10KΩ.

[0024] The main points of the present invention are that a second T card storage module is added to the original single T card recorder terminal system. The second T card storage module can be directly connected to the main control module after the signal is transformed by the transformer circuit. Since the SPI signal voltage of the main control module is 1.8V, and the voltage of the T card storage module is 3.3V, it is necessary to connect the second T card storage module through the transformer circuit to realize the second T card storage. There is no need to make new adjustments to the original main control module CPU interface. The second T card storage module can be connected to store the key separately. When the software key is needed in the application layer of the split intelligent recorder terminal, the stored VPN certificate, APK key, and upper-layer application key can be directly extracted from the second T card storage module to prevent the problem of file loss caused by errors in the storage interval mixed with ordinary files. It is convenient for user certificate management and also improves the security level of the terminal.

[0025] Furthermore, in some embodiments, a display module and a control module are also included. The display module and the control module are electrically connected to the main control module respectively. The display module is used to view the terminal graphics acquisition and device status, and the control module is used to input terminal control signals, which are mainly used for observation and control of the terminal for easy use.

[0026] Furthermore, in some embodiments, the wireless communication positioning module is a full-network wireless communication positioning module, including a full-network antenna, a full-network card socket, a GPS module and a Beidou positioning module. The wireless communication function can be realized with any pass card and has a positioning function.

[0027] In addition, a recorder is provided, which includes any of the above-mentioned dual T card split intelligent recorder terminal systems, a camera and a microphone are arranged on the front of the recorder, and a display screen and a charging interface are arranged on the back of the recorder. The camera, microphone, display screen and charging interface are electrically connected to the dual T card split intelligent recorder terminal system. In this way, the recorder has a separate T card to store keys, which prevents the problem of file loss caused by errors in the storage interval mixed with ordinary files, facilitates user certificate management and improves the security level of the terminal.

[0028] In some embodiments, a back clip is provided on the back of the recorder for fixing the recorder so that it can be conveniently clamped on the body for use.

[0029] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0030] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and improvements may be made to the components and / or layout of the subject combination layout. In addition to variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A dual T card split intelligent recorder terminal system, comprising a main control module, a wireless communication positioning module, a power module, and an image and audio acquisition module, wherein the wireless communication positioning module, the power module, and the image and audio acquisition module are electrically connected to the main control module respectively, characterized in that: Also includes: A first T card storage module, electrically connected to the main control module, for storing image and audio monitoring data; The second T card storage module is electrically connected to the main control module and is used to store VPN certificates, APK keys, and upper layer application keys; When the application layer of the split intelligent recorder terminal needs to use the software key, the key can be directly extracted from the second T card storage module.

2. The dual T card split intelligent recorder terminal system according to claim 1 is characterized in that: The second T card storage module is electrically connected to the main control module through the SPI interface after passing through the voltage conversion circuit.

3. The dual T card split intelligent recorder terminal system according to claim 2 is characterized in that: The voltage conversion circuit includes a voltage conversion module U7, the second T card storage module is connected in parallel with the capacitor C18 and then electrically connected to the IN4 pin of the voltage conversion module U7, and the other end of the capacitor C18 is grounded; the SPI interface is connected in parallel with the resistor R16 and then electrically connected to the EN3 pin of the voltage conversion module U7, and the other end of the resistor R16 is grounded; the OUT1 pin of the voltage conversion module U7 is connected in parallel with the capacitor C19 and then electrically connected to the main control module through the SPI interface, and the other end of the capacitor C19 is connected in parallel with the GND2 pin and the GND5 pin of the voltage conversion module U7 and then grounded.

4. The dual T card split intelligent recorder terminal system according to claim 3 is characterized by: The size of C18 is 1UF, the size of C19 is 1UF, and the size of resistor R16 is 10KΩ.

5. The dual T card split intelligent recorder terminal system according to claim 1 is characterized in that: It also includes a display module and a control module, which are electrically connected to the main control module respectively. The display module is used to view terminal graphics acquisition and device status, and the control module is used to input terminal control signals.

6. The dual T card split intelligent recorder terminal system according to claim 1 is characterized in that: The wireless communication positioning module is a full-network wireless communication positioning module, including a full-network antenna, a full-network card socket, a GPS module and a Beidou positioning module.

7. A recorder, characterized in that: The recorder includes the dual T card split intelligent recorder terminal system according to any one of claims 1 to 6, a camera and a microphone are arranged on the front of the recorder, a display screen and a charging port are arranged on the back of the recorder, and the camera, microphone, display screen and charging port are electrically connected to the dual T card split intelligent recorder terminal system.

8. The recorder according to claim 7, characterized in that: A back clip is also provided on the back of the recorder for fixing the recorder.

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