In general, the evaluation of a car DVD GPS system, based primarily on the merits there is stability, shock resistance, heat resistance, small four points.
Vehicle system platform is generally used Vx-Works real-time operating system. It is designed for embedded system design in the industry, the military has a wide range of applications, including control of the surface of Mars landing Mars detector. Unlike Windows, Linux system, Windows system stability has never been questioned, taking up system resources, a large, vulnerable, Linux system is free software, no special maintenance. Selection of the CPU, the application communications level Freescale PowerPC, this CPU supports multi-task parallel processing. This CPU has been widely used in industrial, communications and military fields. Decoder chip used in a pure world's first synchronized audio and video hardware MPEG4 compression / decompression chip VWeb2010, different compression algorithms on the market + DSP chip, this processing mode, can provide high-definition DVD-quality support from CIF to D1 video format, to ensure that audio and video real-time synchronization.
Through the above-board DVR technology base to build a stable platform, when the vehicle is in motion, recording live images recorded car (road signs, vehicles and pedestrians conditions) or internal live images (and passengers, passenger status); offers a variety of convenient query, playback mode, you can view, play back recorded images of the scene, the video interface via USB2.0 high-speed data backup. Link in the system power supply, given the current environment, various types of electric vehicle complexity, usually 9 ~ 40VDC and 40 ~ 80VDC voltage section of the two groups to meet all kinds of mobile transport, power management give full consideration to start the vehicle, the process of moving the voltage fluctuations, electromagnetic interference and other issues, to ensure a reliable and stable system operation.
Vehicle monitoring system composed of a number of basic components are: Car DVR, camera, monitor, and transmission lines. Inside the camera is responsible for obtaining the video signal through the coaxial cable to the video image signal transmitted to the vehicle DVR. DVR compression format based on the set, the compressed video signal stored on the hard disk. Meanwhile, the DVR can be the brightest video signal in accordance with user-selected combinations, the output to the monitor display. Our Toyota Corolla DVD is the good product for it.
According to the user to select different models, car DVR functionality varies. Car DVR should have the following several basic functions:
1 professional power supply designed to meet the vehicle power supply voltage fluctuations and the impact of a large electric pulse work environment.
(2) engage in professional hard disk shock design, lockable, removable, providing easy data backup.
3 embedded operating system, stable, easy to hang, quick start video calls.
4 supports multiple audio and video input real-time monitoring and recording.
5 video features a variety of modes (manual, timer, alarm, motion detection) and fast query playback.
6 with the video loss alarm function and dynamic inspection.
7 three user management, security, reliability, security is high.
8 support large capacity hard drive, without formatting, plug and play.
In addition to these basic functions, the car should also have a DVR powerful scalability, according to user needs, provide different extensions. According to user selection of the different models, our products support extensions are:
The black gate sub-function vehicle, the vehicle records the process; GPS global satellite positioning systems and electronic map navigation. |
