UGPCBのロゴ
UGPCBの概要
UGPCB belongs to the subdivided market of traditional embedded hard disk video recorders. It is a new special product developed with the application of digital video and audio coding technology in vehicles. It uses embedded processor and embedded operating system, combined with the latest H.264 audio and video compression/decompression technology, GPS global positioning technology, 3G wireless communication technology, USB communication technology, advanced vehicle power management technology in the IT field, GIS geographic information technology, suitable for 24-hour monitoring of various types of vehicles. It can perform audio and video synchronous recording, global positioning, and wireless audio and video real-time transmission. 同時に, a variety of interfaces are reserved on the host computer, which can be connected with vehicle-mounted equipment such as vehicle-mounted display screens, IC trucks, signal priority control systems, and passenger flow statistics systems. Widely used in public transport, long-distance passenger transport, school buses, engineering vehicles, container trucks, tourist buses, logistics freight, police law enforcement vehicles, trains, subways, ships, airplanes, and other mobile vehicles.
Codec Algorithms and Video Resolution
現在のところ, the video and audio codec algorithms selected by various car hard disk video recorder DVR manufacturers mainly include: MPEG-2, MPEG-4, H.264, MJPEG, 等, among which MPEG-2 and MJPEG have low compression rates and are used less; H.264 encoding algorithm has the characteristics of high video compression rate, low bit rate, and good adaptability to low-bandwidth wireless networks. It is the current choice of compression format for vehicle-mounted DVRs. With the improvement of digital encoding performance, the video resolution of car DVR is also raised from CIF (352×288) to D1 (704×576).
Working Principle of UGPCB
UGPCB currently has three storage methods: hard disk, U disk, and SD card. 対照的に, U disk (car U disk video recorder) is more reliable.
- Reliability and Durability
- The U disk has no mechanical moving parts and low power consumption. It can be used in various buses with severe bumps and harsh power supply environments. And in these cars, ordinary car hard disk video recorders can’t work normally at all;
- Ease of Data Transfer
- It is convenient to transcribe data. Just plug the U disk into the USB port of the computer to play back and save the video. No hard disk connector, USB adapter, 等. are required, and the operation is simpler;
- Interface Design
- The U disk interface design is suitable for repeated plugging and unplugging, which is more reliable than SD cards. The SD card interface is an internal interface of the device, and it is not suitable for frequent plugging and unplugging, さもないと, the damage rate will be quite high. The USB interface is an interface between devices, which is specially designed for data exchange between devices. Regardless of the electrical, 物理的な, or mechanical properties of the interface, it is suitable for long-term use in exchanging data between devices.
Future Development Trend of Vehicle DVR Monitoring System
Judging from the overall development trend of the current security industry, networking and intelligence are the main development directions of current network monitoring. As an important storage tool in monitoring equipment, they are also destined to be a trend in the future of car DVR.
Limitations of Standalone Operation
For the current equipment, although many functions such as multimedia and even navigation have been enhanced on the basis of the original functions, the relatively independent stand-alone operation mode still greatly limits the function of the vehicle DVR.
Necessity of Networking and External Communication
After all, compared with a complete monitoring system, a vehicle-mounted monitoring system with only one or two monitoring points does not have much value for stand-alone storage. If it does not implement network introduction and external communication, its attractiveness will definitely be difficult for people to spend money on.
