CN218181562U - Single module system for vehicle-mounted DVR - Google Patents

Abstract

The utility model discloses a single module system for on-vehicle DVR, relate to on-vehicle DVR field, including the SOC module, the EMMC memory, acceleration and gyroscope chip, the memory chip, the video ADC module, encrypt the chip, ethernet physical layer chip and interface unit, EMMC memory and memory chip adopt special interface and SOC module to be connected respectively, acceleration and gyroscope chip adopt I2C bus and SOC module to be connected, it adopts single GPIO and SOC module to be connected to encrypt the chip, the video ADC module carries out the conversion of 4 way high definition AHD signals and is connected with the SOC module through 4Lane MIPI signals, ethernet physical layer chip passes through the RMII interface and is connected with the SOC module and realizes ethernet communication function, interface unit includes the storage interface, audio input output interface, communication interface, general control interface and power source, there is signal transmission between interface unit's various interfaces and the SOC module. This scheme can integrate multiple functions and easy maintenance.

Description

Single module system for vehicle-mounted DVR

Technical Field

The utility model relates to an on-vehicle DVR field, concretely relates to single module system for on-vehicle DVR.

Background

Under the common conditions, special equipment is needed for realizing the behavior monitoring of a driver, the running state monitoring of an automobile and the advanced auxiliary driving function of the automobile, on one hand, when the automobile is adapted to different scenes, the whole board and the whole machine are needed to be designed again, the research and development test period is long, and the design and debugging cost is high; on the other hand, when the motherboard fails, there may be some circuit damage that makes the entire board difficult to repair or scrapped. The existing core board in the market has no AI calculation power or is not suitable for the vehicle-mounted driving early warning function. It is difficult to meet the design requirements of the on-vehicle DVR.

SUMMERY OF THE UTILITY MODEL

The main control board of the vehicle-mounted DVR device has no AI computing power and is difficult to maintain. It is an object of embodiments of the present application to propose a single module system for an on-board DVR to solve the technical problems mentioned in the background section above.

In order to realize the above purpose, the technical scheme of the utility model is that:

the utility model provides a single module system for on-vehicle DVR, including the SOC module, the EMMC memory, acceleration and gyroscope chip, the memory chip, video ADC module, the encryption chip, EMMC memory and memory chip adopt special interface and SOC module to be connected respectively, acceleration and gyroscope chip adopt I2C bus and SOC module to be connected, the encryption chip adopts single GPIO to be connected with the SOC module, video ADC module carries out the conversion of 4 way high definition AHD signals and is connected with the SOC module through 4Lane MIPI signals, ethernet physical layer chip is connected with the SOC module through RMII interface and realizes the ethernet communication function, interface unit includes storage interface, audio input output interface, the socket interface, communication interface, universal control interface and power interface, there is signal transmission between various interfaces and the SOC module of interface unit.

Preferably, the video ADC module includes an AHD1 analog channel, an AHD2 analog channel, an AHD3 analog channel, and an AHD4 analog channel, the AHD1 analog channel is fixed as a DSM signal, the AHD2 analog channel is fixed as an ADAS signal, the AHD3 analog channel and the AHD4 analog channel are used as two recording signals, or the AHD3 analog channel is used as a blind area monitoring video signal, and the AHD4 analog channel is used as a recording signal.

Preferably, the acceleration and gyro chip is a 6-axis acceleration and gyro chip.

Preferably, the communication interface includes three UART interfaces, one SPI interface, one I2C interface, and one USB interface.

Preferably, the storage interface includes an SD card interface, and the power interface can be externally connected with a 5V power supply.

Preferably, the audio input/output interface includes two microphone input interfaces or two line input interfaces and one audio output.

Preferably, the socket interface comprises 74Pin 1.27mm pin pitch double row pins.

Preferably, the system further comprises a network camera and/or a real-time clock, and the network camera and/or the real-time clock are connected with the SOC module.

Preferably, the system further comprises an infrared light supplement circuit, and the SOC module is connected with the infrared light supplement circuit in a PWM control manner to realize an infrared light supplement function of the DSM in a dark light environment.

Preferably, the SOC module is HI3516DV300, the EMMC memory is 1 EMMC chip of 8GB, and the memory chip is 2 DDR3L chips.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) The single-module system for the vehicle-mounted DVR integrates modules or chips with multiple functions, can realize the functions of analyzing the behavior of a driver, carrying out advanced auxiliary driving on an automobile and monitoring the running state of the automobile, reduces the potential safety hazard of running of the automobile, and provides more safety guarantee for the traveling of the automobile.

(2) The single module system for the vehicle-mounted DVR adopts various types of interface units, is conveniently connected with an external function expansion board, and is convenient to maintain when system integration and faults occur according to different function requirements.

(3) The single module system for the vehicle-mounted DVR adopts an industrial standard design, guarantees reliability under a vehicle-mounted use environment, adopts a modular design, and can realize convenient maintenance when a complete machine breaks down.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the invention. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.

FIG. 1 shows a block connection diagram of a single-module system for an on-board DVR, according to an embodiment of the application;

FIG. 2 shows a circuit diagram of an AHD video conversion portion of a single module system for an in-vehicle DVR, according to an embodiment of the application;

FIG. 3 shows a circuit diagram of an Ethernet physical layer chip of a single module system for an in-vehicle DVR, according to an embodiment of the application;

reference numerals: 1. an SOC module; 2. an EMMC memory; 3. acceleration and gyroscope chips; 4. a memory chip; 5. a video ADC module; 6. an interface unit; 7. encrypting the chip; 8. an Ethernet physical layer chip; 9. infrared light filling circuit.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings. It should be noted that the dimensions and sizes of the elements in the figures are not to scale and the sizes of some of the elements may be highlighted for clarity of illustration.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, an embodiment of the present application provides a single module system for a vehicle-mounted DVR, including an SOC module 1, an EMMC memory 2, an acceleration and gyroscope chip 3, a memory chip 4, a video ADC module 5, an interface unit 6, an encryption chip 7, and an ethernet physical layer chip 8, where the system uses HI3516DV300 (dual core technologies A7, 800Mhz master frequency, 1.0T calculation power) as the SOC module 1, the EMMC memory 2 and the memory chip 7 are respectively connected to the SOC module 1 by using dedicated interfaces, the acceleration and gyroscope chip 3 is connected to the SOC module 1 by using an I2C bus, and the encryption chip 7 is connected to the SOC module 1 by using a single GPIO, specifically, the EMMC memory 2 is 1 EMMC chip of 8GB, and the memory chip 4 is 2 DDR3L chips, so that 1 EMMC and 2 DDR3L memory chips (total 1 gbe capacity) are integrated to ensure high-speed real-time processing capability and computing capability requirements of vehicle-mounted products. The video ADC module 5 is connected with the SOC module 1 through 4Lane MIPI signals and simultaneously performs conversion of 4-path high-definition AHD signals, has 4-path AHD (highest resolution 1080 p) high-definition video input and conversion capacity, and can achieve functions of early warning of driver driving behaviors, vehicle-assisted advanced driving, blind area early warning, video recording and the like. The acceleration and gyroscope chip 3 is a 6-axis acceleration and gyroscope chip, and the 6-axis acceleration and gyroscope chip is connected with an I2C2 bus of the HI3516DV300, so that the functions of monitoring the rapid acceleration, rapid deceleration and rapid turning of the vehicle can be realized. The encryption chip 7 is used for realizing the encryption protection function of the algorithm.

In a specific embodiment, the video ADC module 5 includes an AHD1 analog channel, an AHD2 analog channel, an AHD3 analog channel, and an AHD4 analog channel, where the AHD1 analog channel is fixed as a DSM signal, the AHD2 analog channel is fixed as an ADAS signal, and the AHD3 analog channel and the AHD4 analog channel are used as two video recording signals (DR), or the AHD3 analog channel is used as a blind area monitoring video signal (BSD), and the AHD4 analog channel is used as a video recording signal (DR). As shown in fig. 2, the schematic diagram of the AHD video conversion part includes a video ADC conversion chip N4 and a dedicated power conversion circuit, the video ADC module 5 is the video ADC conversion chip N4, the dedicated power conversion circuit is configured to supply power to the video ADC conversion chip N4 according to a required power timing sequence, the SOC module 1 is controllable to perform power on and power off, and automatically perform system and resolution identification and AD conversion on four input videos, and the converted data is transmitted to the SOC module 1 through the MIPI.

In a specific embodiment, the ethernet physical layer chip 8 is connected to the SOC module 1 through an RMII interface to implement an ethernet communication function, specifically, the ethernet physical layer chip 8 is an RTL8201F, and is connected to the SOC module 1 through an RMII interface to implement a 10/100M ethernet communication function, which may be used to transmit compressed audio and video streams, or may be externally connected to a network camera (IPC) to implement a video input function other than AHD video input. As shown in fig. 3, a circuit diagram of the ethernet physical layer chip 8 is connected to the SOC module 1 through the RMII interface to implement an ethernet communication function, and a plurality of IPC camera inputs can be provided as required.

In a specific embodiment, the interface unit 6 includes a storage interface, an audio input output interface, a socket interface, a communication interface, a general control interface, and a power supply interface. There is signal transfer between the respective interfaces in the interface unit 6 and the SOC module 1. The communication interface comprises three UART interfaces, one SPI interface, one I2C interface and one USB interface, and can be connected with other SOC modules 1, the MCU processor or peripheral equipment. The USB HOST interface is adopted as the USB interface, and the USB HOST interface can realize the wireless communication function by being connected with the 4G module. The storage interface comprises one path of SD card interface, the SD card interface is SDIO2.0 interface, and can be externally connected with an SD card to realize the function of storing videos or pictures. The audio input and output interface comprises two microphone input interfaces or two line input interfaces and one audio output, and the audio input interface and the output interface are combined to realize the vehicle-mounted voice talkback function. In a specific embodiment, the jack interface includes 74Pin 1.27mm pin pitch dual row pins. External connections are made using 74Pin (1.27 mm Pin pitch) double row pins. The power interface can be connected with a single 5V power supply to supply power to the SOC module 1 and other chip devices. Based on the single-module system, the vehicle-mounted DVR product with the three-way recognition function can be realized only by adding some interfaces or power protection, and the integration level is high. Specific interface information is shown in table 1.

TABLE 1

In a specific embodiment, the system further includes an infrared light supplement circuit 9, and the infrared light supplement circuit 9 is connected and controlled by the SOC module 1 in a PWM manner, so as to implement an infrared light supplement function of the DSM in a dark light environment. The infrared light supplement circuit 9 required by the DSM function is integrated on the single-module system, and the single-module system is used for realizing automatic light supplement in a dark environment and ensuring the accuracy of the DSM identification function.

The single module system for the vehicle-mounted DVR of the embodiment of the application has Ethernet communication, SPI communication, I2C communication, UART communication, USB communication, one-way SD card interface, audio input and output, PWM output and universal control interface, acceleration and gyroscope chip 3, real-time clock and the like. This a single module system for on-vehicle DVR has integrateed all functions that realize the video signal analysis of on-vehicle driving, only needs to provide the outside 5V power of the same kind and can go up electric work, and analog video signal and other communication functions only need carry out simple interface protection can, can carry out convenient system integration according to actual complete machine equipment.

It should be noted that, each module and electronic device in the single module system for the vehicle-mounted DVR described in the present application all adopt the form of a hardware circuit or a chip, and are all entity devices, and the present application achieves the purpose of implementing the scheme of the present application by designing the electrical connection relationship between each module and electronic device. The functions of each module and each entity device of the functions of each electronic device in the single-module system for the vehicle-mounted DVR are not virtual structures, and the modules and the electronic devices in the single-module system for the vehicle-mounted DVR are not objects protected by the utility model in the patent law, which appear in the application.

In the description of the present application, it is to be understood that the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims shall not be construed as limiting the scope. The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed.

It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. The utility model provides a single module system for on-vehicle DVR, its characterized in that, including SOC module, EMMC memory, acceleration and gyroscope chip, memory chip, video ADC module, encryption chip, ethernet physical layer chip and interface unit, EMMC memory and memory chip adopt dedicated interface and SOC module to be connected respectively, acceleration and gyroscope chip adopt I2C bus and SOC module to be connected, encryption chip adopts single GPIO to be connected with SOC module, video ADC module carries out the conversion of 4 way high definition AHD signals and is connected with SOC module through 4Lane MIPI signals, ethernet physical layer chip is connected with SOC module through RMII interface and realizes ethernet communication function, interface unit includes storage interface, audio input output interface, communication interface, socket interface, general control interface and power source interface, various interfaces of interface unit with there is signal transmission between the SOC module.

2. The single-module system of claim 1, wherein the video ADC module comprises an AHD1 simulation channel, an AHD2 simulation channel, an AHD3 simulation channel, and an AHD4 simulation channel, the AHD1 simulation channel is fixed to DSM signals, the AHD2 simulation channel is fixed to ADAS signals, the AHD3 simulation channel and the AHD4 simulation channel are used as two video signals, or the AHD3 simulation channel is used as a blind area monitoring video signal, and the AHD4 simulation channel is used as a video signal.

3. The single-module system for an on-board DVR of claim 1, wherein said acceleration and gyroscope chip is a 6-axis acceleration and gyroscope chip.

4. The single-module system for an in-vehicle DVR of claim 1, characterized in that said communication interface comprises a three-way UART interface, a one-way SPI interface, a one-way I2C interface and a one-way USB interface.

5. The single-module system for the vehicle-mounted DVR of claim 1, wherein the storage interface comprises a SD card interface, and the power interface can be externally connected with a 5V power supply.

6. The single-module system for an in-vehicle DVR of claim 1, wherein the audio input output interface comprises two microphone input interfaces or two line input interfaces and one audio output.

7. The single-module system for a vehicle-mounted DVR of claim 1, wherein said jack interface comprises 74Pin 1.27mm pin pitch double row pins.

8. The single-module system for the on-board DVR of claim 1, further comprising a web camera and/or a real-time clock, the web camera and/or real-time clock being connected with the SOC module.

9. The single-module system for the vehicle-mounted DVR of claim 1, further comprising an infrared light supplement circuit, wherein the SOC module is connected with the infrared light supplement circuit in a PWM control mode to realize the infrared light supplement function of the DSM in a dark light environment.

10. The single-module system for the vehicle-mounted DVR of claim 1, wherein the SOC module is HI3516DV300, the EMMC memory is 1 EMMC chip of 8GB, and the memory chip is 2 DDR3L chips.

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