Embedded image monitoring system on vehicle

Abstract

The invention is an embedded image monitoring system, comprising camera, microphone, audio video digital coder / decoder, liquid crystal display, speaker, and wired operating controller. It adopts embedded system design and OSD technique, having characters of high reliability, small bulk, low power consumption, simple and convenient to operating, and suitable to be used by installed inside traffic tools such as automobile. And it adopts small-capacity solid memory (CF card) and circulating and alternating storage mode as well as MPEG-4 supporting image coding technique in self-adapting variable bit rate (VBR technique), solving the difficulty in preventing system vibration and recording clear image under the environment of a vehicle moving at high speed. And the system can automatically or artificially record video of the latest event so as to provide direct evidence of identifying traffic accident responsibility as well as bursty events such as hijack in operating vehicle.

Description

technical field [0001] The invention relates to an embedded image monitoring system for digitally and efficiently compressing and recording video images and audio signals. It can be installed and used to capture and record accident image information automatically or manually, and provide direct evidence for traffic accident responsibility identification and robbery on commercial vehicles and other emergencies. Background technique [0002] With the development of the national economy, the number of motor vehicles in the whole society continues to increase, followed by frequent traffic accidents. There are many reasons for traffic accidents. On the one hand, the driver may be driving illegally. On the other hand, there are also many cases where the driver is driving in full compliance with the rules, such as traffic accidents caused by pedestrians and non-motor vehicles. , but in the case that the driver cannot provide sufficient evidence to prove that he is not responsible,...

AI Technical Summary

Problems solved by technology

It is more difficult for traditional hard disk video recorders to clearly record high-speed moving information outside the car in a digital way (as the speed of the car increases, a higher image encoding rate is required)

Tape video recorders and hard disk video recorders also have a common defect that is the shockproof and shock absorption problem of the magnetic head in the recorder under the vehicle situation. The utility model patent "vehicle monitoring system" (patent No. 02281517.1) provides a vibration-type composite sensor, Although the shock absorption system composed of shock absorber controller and shock absorber pump valve solves the problem of shock absorption in principle, the structure is complicated and the cost is also increased;

[0006] 3. For emergencies such as robbery inside commercial vehicles, the monitoring system of the above-mentioned patents does not consider installing a separate and concealed monitoring mode switching device, so that the driver can switch the vehicle without being noticed by criminals. The external monitoring mode for road conditions is switched to the internal monitoring mode for recording information inside the vehicle, so as to safely record the image information of the criminal process;

[0007] 4. Due to the design of the monitoring system in the above-mentioned patents, the volume, weight and power consumption of the monitoring system are too large, so it is not a big problem to install it in special vehicles, but in general vehicles, especially for private cars and For taxis, if it occupies a large installation space, it is difficult for car owners to accept

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