Do you know the Difference Between On-Board Surveillance and Ordinary Video DVR?

Date: Mar,19 2020 Author: qhmdvr2 View:

As a Mobile Surveillance System Manufacturer, share with you.

As one of the most important functions of vehicle video surveillance equipment, audio and video encoding and decoding capabilities are one of the key capabilities of considering vehicle digital video recorders. In this regard, the car video recorder and the ordinary video recorder are essentially the same. They have selected mainstream video codec chips and adopted mainstream codec formats to seek the greatest harmony between coding compression efficiency and imaging clarity.

In terms of the use and acquisition methods of video, there are large differences between ordinary DVRs and on-vehicle DVRs. Ordinary DVRs are often used in fixed places, where the equipment is fixed and difficult to move, and can be displayed locally, or it can be accessed through a fixed network (ADSL) to the monitoring private network. Any observation point in the network can access the DVR host through the network. Vehicle DVR can only access the monitoring private network through 4G / 4G. Therefore, Mobile DVR pays more attention to the control of code stream, and ordinary DVR pays more attention to the priority of picture quality. H.264 has a high compression ratio and high-quality and smooth images. Because of this, H.264-compressed video data requires less bandwidth and is more economical during network transmission.

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In order to meet the real-time online transmission of video pictures, most vehicle-mounted devices use 4G networks. Compared with the conventional transmission method 2G commonly used in the car's driving recorder, 4G mainly improves the speed of transmitting sound and data. It can better achieve wireless roaming worldwide and process image, music, and video streams. And other media formats. With the rise of 4G networks, on-board video recording equipment has begun to use 4G as a transmission method, with faster data transmission speeds and the ability to support larger amounts of high-definition picture transmission.

Vehicle digital video recorder can also be combined with automotive electronics related functions. For example, the CAN bus technology is commonly used for vehicle driving data collection and upload. Vehicle digital video recorders should also have CAN bus access and analysis processing functions, and record the vehicle driving related information through hard disk Information, and analyze and process important data. In addition to adding hard disk vibration reduction and reinforcement treatment for vehicle digital video recorders, it is necessary to pay attention to the difference between the power supply used in such projects and the power supply of ordinary cars. For example, the power supply of on-board equipment for trains is mostly DC 48V or DC 110V. The vehicle power supply is DC 12V or DC 24V. As a front-end core device for information aggregation, the vehicle DVR also bears the functions of vehicle information collection and aggregation. Access to a wide range of vehicle accessories to provide a wide range of information sources.

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Tag: Mobile Surveillance System Manufacturer, Mobile DVR, 1080P 3G 4G GPS WIFI Mobile DVR

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