WO2017124691A1

WO2017124691A1 - Novel drive recorder

Info

Publication number: WO2017124691A1
Application number: PCT/CN2016/086341
Authority: WO
Inventors: 李健能
Original assignee: 深圳市比特眼科技有限公司
Priority date: 2016-01-19
Filing date: 2016-06-20
Publication date: 2017-07-27
Also published as: CN205486340U

Abstract

A novel drive recorder, comprising an image sensor unit (1), an image reading unit (2), a liquid crystal screen unit (3), a main control unit (4), a GPS unit (5), a storage unit (6), a clock unit (7) and a power supply unit, wherein the image sensor unit (1), the image reading unit (2), the liquid crystal screen unit (3), the GPS unit (5), the storage unit (6) and the clock unit (7) are electrically connected to the main control unit (4) respectively, and the power supply unit supplies power to the whole recorder. By using an SD card to store data, the reliability and the anti-interference capability are relatively high; and by using a lithium battery to separately supply power, the portable ability of a system is improved, and the price-performance ratio is high.

Description

A new type of driving recorder

Technical field

The invention particularly relates to a novel driving recorder.

Background technique

In today's era, intelligent transportation has gradually been valued by people, and the driving recorder has become an indispensable part of it. At present, there are many manufacturers of automobile driving recorders in China. However, most of the current car owners' understanding of the driving recorder only stays at the demand level of anti-collision porcelain, and because the driving recorder is expensive, the user market awareness is not high. Since most of the driving recorders in the market are relatively simple in function, some driving recorders are redundant and expensive, and are not convenient for promotion and application.

technical problem

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel driving recorder for solving the above disadvantages.

Technical solution

The object of the invention is achieved by the following technical solutions:

A novel driving recorder, comprising an image sensor unit, an image reading unit, a liquid crystal panel unit, a main control unit, a GPS unit, a storage unit, a clock unit and a power supply unit, an image sensor unit, an image reading unit, a liquid crystal screen unit, The GPS unit, the storage unit and the clock unit are electrically connected to the main control unit, respectively, and the power supply unit supplies power to the entire recorder.

The image sensor unit includes a front sensor unit and a rear sensor unit, both of which use an OV7670 image sensor.

The image reading unit uses an AL422 chip.

The main control unit uses STM32F103RBT6 microcontroller chip.

The storage unit uses a MicroSD card.

The power unit uses a lithium battery power supply.

The liquid crystal panel unit includes an LCD unit and a touch screen unit.

Beneficial effect

The invention has the following beneficial effects: The invention has reasonable design, convenient use and high cost performance. The SD card is used for storing data, has high reliability and anti-interference ability, and is separately powered by a lithium battery, which improves the portability of the system, has high cost performance, and has a good application prospect. .

DRAWINGS

Figure 1 is a schematic view of the overall structure of the present invention;

2 is a circuit diagram of a main control unit of the present invention;

3 is a circuit diagram of an LCD unit of the present invention;

4 is a circuit diagram of a touch screen of the present invention;

Figure 5 is a circuit diagram of a front sensor unit of the present invention;

Figure 6 is a circuit diagram of a rear sensor unit of the present invention;

Figure 7 is a circuit diagram of a memory unit of the present invention;

Figure 8 is a circuit diagram of a GPS unit of the present invention.

Embodiments of the invention

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in FIG. 1, a new type of driving recorder includes an image sensor unit 1, an image reading unit 2, a liquid crystal panel unit 3, a main control unit 4, a GPS unit 5, a storage unit 6, a clock unit 7, and a power supply unit. The image sensor unit 1, the image reading unit 2, the liquid crystal panel unit 3, the GPS unit 5, the storage unit 6, and the clock unit 7 are electrically connected to the main control unit 4, respectively, and the power supply unit supplies power to the entire recorder.

The image reading unit uses an AL422 chip.

The main control unit uses STM32F103RBT6 microcontroller chip.

The storage unit uses a MicroSD card.

The power unit uses a lithium battery power supply.

The liquid crystal panel unit includes an LCD unit and a touch screen unit.

LCD panel unit: through the main control unit and the LCD screen for data communication, the content and data to be displayed are transmitted to the TFT LCD screen through the signal line for display. The LCD control driver is the ILI9325.

Image sensor unit: SDA and SCL in OV7670 are the data and clock pins of SCCB bus, respectively. VSYNC and HREF are the frame synchronization and line synchronization signals of the module respectively. Each time a picture is acquired, 320*240 pixels are required to be screened. PCLK is the pixel clock, the camera clock is 24MHz, the pixel clock provided by the three-way is 8MHz, XCLK is the 8MHz system clock, D0-D7 is the 8-bit parallel data bit, and is output to the memory AL422B DI0-DI7, and then The AL422B output data FIFO_DO_FIFO_D7 drives the TFT LCD screen.

Storage unit: SD_CS is the chip select pin of the MicroSD card, connected to the PBO interface of the MCU. When the MCU sets SD_CS to low level, the SD card is enabled. SPI1_M0SI is the SPI data input pin, which is connected to the MOSI pin of the SPI1 bus of the MCU. The MCU reads the data in the SD card from this pin. SPI1_MISO is the data output pin of the SPI bus. It is connected to the MISO pin of the STM32 SPI1 bus. The mid-chip machine writes data to the SD card through this pin. SPI1_SCK is the SPI clock pin that connects to the SCK pin of the SPI bus of the receiver. The larger SD card is a 9-pin package. The 9th pin is the SD pin and is internally connected to GND. When the SD socket has not been inserted into the SD card, the MCU reads from the pin to a high level (using the MCU pull-up input, or Add a pull-up resistor to the outside. Once the SD card is inserted, this pin goes low. This function is used to detect if the SD card is inserted.

GPS unit: five terminals, VCC, TX, RX, STANDBY and GND. The RX pin is the information receiving pin of the module, and the user can change the GPS wave through this pin configuration.

Rate, data bit, check digit, working mode, etc. This topic uses the default setting of the GPS module, the baud rate is 9600bps, the working voltage is 3.3V: t0.3V, then the RX pin is left floating. The STANDBY pin is a standby pin. When the STANDBY pin is left floating or grounded, TX has no data output, and the GPS module is in standby mode. When the STANDBY pin is set high, the GPS is in normal working mode, and TX outputs data. To facilitate hardware connection, a USB cable is used as the connection cable. USB interface 1-4 corresponds to GPS VCC (red), TX (green), STANDBY (white), GND (black).

Working principle: The system power supply can be supplied by the vehicle 24V power supply through the power conversion module buck output. At the same time, the system also reserves the 5V lithium battery power interface, and then converts it to 3.3V output through LDO for system use. The system is powered by a lithium battery for added portability. OV7670 image sensor provides all functions of single-chip VGA camera and image processor, output 8bit The RGB data is placed in the FIFO (AL422), and the data read by the AL422 directly drives the TFT to display the image in real time. For the photographed data, it is stored in the .BMP format through the SPI bus to the MicroSD card, and the user can browse and view the stored photos through the TFT touch. The GPS unit can obtain navigation and positioning information such as current time, latitude and longitude, search star number and navigation speed. The RTC clock uses a special 32768 crystal oscillator to provide the driver with a clock calendar function, while providing a time basis for reminding fatigue driving and taking pictures.

Claims

A novel driving recorder, comprising an image sensor unit, an image reading unit, a liquid crystal panel unit, a main control unit, a GPS unit, a storage unit, a clock unit and a power supply unit, characterized in that: an image sensor unit, an image reading unit, The LCD unit, the GPS unit, the storage unit and the clock unit are electrically connected to the main control unit, respectively, and the power supply unit supplies power to the entire recorder.
A novel driving recorder according to claim 1, wherein said image sensor unit comprises a front sensor unit and a rear sensor unit, both of which employ an OV7670 image sensor.
A novel driving recorder according to claim 1, wherein said image reading unit employs an AL422 chip.
A novel driving recorder according to claim 1, wherein said main control unit adopts STM32F103RBT6 single chip.
A novel driving recorder according to claim 1, wherein said storage unit uses a MicroSD card.
A novel driving recorder according to claim 1, wherein said power supply unit uses a lithium battery power supply
A novel driving recorder according to claim 1, wherein said liquid crystal panel unit comprises an LCD unit and a touch screen unit.