Driving recorder for vehicle

A driving recorder and recorder technology, which is applied in the registration/indication of vehicle operation, instruments, registration/instruction, etc., can solve the problems of limited storage capacity and inability to record vehicle trajectory, and achieve the effect of extending the recording time.

Inactive Publication Date: 2005-03-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the device can record more vehicle information and display and record it, it can only record some information about the condition of the vehicle, and cannot record the route track that the vehicle has trav

Method used

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  • Driving recorder for vehicle

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Experimental program
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Embodiment Construction

[0014] Device of the present invention, its circuit principle block diagram is as figure 2 As shown, the single-chip model is the 8-bit single-chip chip AT89C51 produced by Atmel Company, which is used to receive the signal of the GPS receiving board and sample the A / D signal, and store the signal in the flash memory chip; when the driving process is over, the signal can be transferred from Read out from the flash memory and transmit to the desktop computer; the A / D conversion chip model is AD0804, which is a commonly used A / D conversion chip for collecting analog signals of vehicle conditions; the crystal oscillator, with a frequency of 11.0592MHz, is used to provide crystal oscillator signals for the microcontroller ;The FLASH memory chip is a FLASH memory chip produced by INTEL company, the model is 28F020, which is used to store the signal of the GPS receiving board and the sampling A / D signal. It is characterized by a large storage capacity and the information will not be...

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PUM

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Abstract

The invention relates to a vehicle recording device, which belongs to automobile electron device technology field. The device includes: microchip, which is used to receive signal of GPS receiving board and A/D sampling signal; A/D converting chip for collecting car station analog signal; crystal oscillation, which is used to provide crystal oscillation signal; flash chip, which is used to store signal of GPS receiving board and sampled A/D signal; locking chip, which is used to lock data, realizes the duplex of address and data wires; series electric level conversion chip, which is sued to convert the series signal of the micro chip into electric level of computer series port. The recorder can record the car state signal, at the same time, it can record the track, time and speed and so on.

Description

technical field [0001] The invention relates to a driving recorder for a vehicle, which belongs to the technical field of automotive electronic equipment. Background technique [0002] Existing instruments and equipment for driving process recording, such as the technology disclosed in "Electronic Technology" 1996 No. 16, "Design and Research of Automobile Dashboard with Black Box Function", its structural block diagram is as follows figure 1 As shown, its main function is to automatically record various indicators of the car under working conditions such as engine speed, fuel consumption, water temperature, mileage, etc., which are realized through single-chip microcomputer and A / D conversion. The extended RAM is used as a data register, the EPROM is used as a program memory, and the EEPROM is used as a dynamic data memory. It records once every second and can store the information of 6-10 minutes before parking. Although the device can record more vehicle information and...

Claims

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Application Information

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IPC IPC(8): G07C5/00
Inventor 杨殿阁连小珉卜健罗禹贡郑四发李克强
Owner TSINGHUA UNIV
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