Metro HD video monitoring is mainly to solve the problem that "details" can not be seen clearly in the normal monitoring process. From the perspective of operation management and public security management, HD video monitoring images are required. However, ordinary HDMI cable long-distance transmission will have poor signal, easy to be disturbed, and the displayed images will be blurred, trailing, color separation and other phenomena. Huafei Technology recently launched the HF-HDMI-1000-G series HD video optical transceiver with long transmission distance, wide frequency band Strong anti-interference performance, high security, small size, light weight and other advantages, suitable for long-distance and special environment transmission. It can provide more real-time, more detailed and clear video, so it can be well applied in public places where people flow, vehicles and goods flow density, and can provide high-resolution image video information for key places such as subway entrances and platforms.
Product characteristics
HF-HDMI-1000-G high-definition video transmission series products are high-definition video and audio transmission products independently developed by Huafei Technology with independent intellectual property rights. This series of products mainly realize the long-distance optical fiber transmission function of high-definition video signals, and meet the application of high-definition video information release, extension, relay, etc. The product is designed with an industrial wide temperature range, which can work normally under the ambient temperature of - 40 ℃~+85 ℃ and the working humidity of 0~95% (non condensing). It has the performance of dust prevention, salt fog prevention, etc., and is fully suitable for the field environment with more severe working conditions.
● Support HDTV1080p 1920* 1080@30HZ /60HZ resolution
● Support 1-channel HDMI input and 1-channel HDM loop-out
● Support 1-way two-way data and RS232/RS485 (optional)
● Up to 1080P HD
● Compatible with HDMI 1.3b standard
● Configure various display modes
● Surface mounting technology
● Gigabit optical fiber transmission technology, easy to upgrade
● Up to 12 bit color depth
● Industrial-grade design and modular design make the equipment reliable and flexible
● Power supply, optical fiber link, data status indication, convenient for on-site operation
● Plug and play, high quality video output without adjustment
Typical application in metro CCTV system
1. Transmission description of driver platform monitoring system
The camera image signals set at both ends of the up and down platforms are transmitted to the dedicated core switch for video in the station computer room. After being configured, the output is connected to the codec, and the video image of the platform is synthesized into one channel of high-definition images, and then transmitted to one 25 ″ monitor at the parking spaces on both sides of the platform through HDMI high-definition transmission equipment. The 25 ″ monitor is mounted on the wall. For the train driver to monitor the boarding and alighting of passengers at the platform.
2. Transmission description of work area monitoring system
The camera image signal set in the work area is transmitted to the dedicated core switch for video in the station computer room. After configuration, it is output and connected to the codec, and the video image of the platform is transmitted to the work area monitor through the HDMI HD transmission equipment.
3. Scheme advantages
● Gigabit optical fiber transmission technology, large capacity, easy to upgrade
● Industrial-grade design and modular design make the equipment reliable and flexible
● ESD and surge protection circuit can effectively prevent static electricity and lightning damage
● Power supply, optical fiber link, data status indication, convenient for user on-site operation
● Plug and play, high quality video output can be achieved without adjustment
● Support 1080P HD
4. Schematic diagram
With the development of high-definition, intelligence and networking of video surveillance, video surveillance plays a more important role in ensuring the operation safety of urban rail transit. Huafei Technology will continue to innovate and improve to help China build a more safe, reliable and efficient rail transit communication system.