Audio and video vehicle data recorder based on FPGA (field programmable gate array)

Abstract

The invention relates to an audio and video vehicle data recorder based on FPGA (field programmable gate array). The audio and video vehicle data recorder comprises an FPGA control module, a video encoding and decoding module, an audio encoding and decoding module, a speed processing module, a digital switching value module, a data access module and a display module, wherein the video encoding and decoding module, the audio encoding and decoding module, the speed processing module and the digital switching value module transmit collected audio, video, speed and switching value data to the FPGA control module respectively; the FPGA control module performs internal processing and then the processed data is stored by the data access module; images and vehicle parameters are displayed through the display module. The audio and video vehicle data recorder can display images and vehicle parameters for bringing conveniences for drivers, meanwhile, the recorder can record audio, video and other driving data before and after accidents, so that the recorder can bring convenience for law-enforcing departments to analyze and process the accidents.

Description

technical field [0001] The invention relates to the field of vehicle driving recorders, in particular to an FPGA-based audio and video vehicle recorder. Background technique [0002] The traditional on-board driving recorder only records the vehicle's speed, direction lights, reverse lights, brakes, vehicle start and other characteristic quantities. Although these vehicle-mounted characteristic quantities play a key role in the analysis of accidents, sometimes the evidence is insufficient. Most of the existing video driving recorders are based on ARM or DSP. Because the hardware structure of ARM or DSP is fixed, it is not conducive to system upgrade and expansion functions. Therefore, we have developed an audio and video vehicle recorder based on FPGA, which can display images, And on-board parameters, provide convenience for drivers to drive, and can record audio, video and other driving data before and after the accident, which is convenient for law enforcement agencies to...

AI Technical Summary

Problems solved by technology

Most of the existing video driving recorders are based on ARM or DSP. Because the hardware structure of ARM or DSP is fixed, it is not conducive to system upgrade and expansion functions. Therefore, we have developed an audio and video vehicle recorder based on FPGA, which can display images, and on-board parameters, providing convenience for drivers to drive, and can record audio, video and other driving data before and after the accident, which is convenient for law enforcement agencies to analyze and deal with accidents

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