Subcarrier link repair system based on coaxial transmission
A technology of coaxial transmission and repair system, applied in the field of PLC link, can solve the problems of rewiring of the whole vehicle line, waste of resources, crash and other problems, and achieve the effect of stable and reliable communication, guaranteeing smoothness and guaranteeing the link.
Active Publication Date: 2019-05-24
广州市源瑞信息科技有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Because it involves the upgrade and transformation of the train video surveillance system, the upgrade of the train video surveillance system often encounters the following problems: the original car analog surveillance system relies on coaxial cables to transmit analog video signals, if it is upgraded to a digital network, if the network cable is used to transmit digital video, It is necessary to carry out a major transformation of the entire vehicle circuit, or to re-wire the entire vehicle circuit, which is a huge waste of resources.
[0005] However, there is a common problem in the power sub-carrier solutions currently on the market. After a long time of uninterrupted work for a certain period of time, there will be disconnections, crashes and other failures, which makes the continuity and stability of the monitoring system not very high.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
[0020] refer to figure 1 and figure 2 , a subcarrier link repair system based on coaxial transmission, which includes at least one IP camera, IPOC conversion module and monitoring host, the IP camera is electrically connected to the IPOC conversion module, and the IPOC conversion module is electrically connected to the monitoring host through a coaxial cable , the monitoring host is equipped with a master-end sub-carrier module and a master-end link repair module, and the IPOC conversion module is equipped with a slave-end sub-carrier module and a slave-end link repair module, and its master-end sub-carrier module and slave-end sub-carrier module are both It is used for signal conversion, and the coaxial cable has a large communication capacity and can connect multiple devices. The main-end link repair module is equipped with an MCU main control chip an...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a subcarrier link repair system based on coaxial transmission. The system comprises at least one IP camera. an IPOC conversion module and a monitoring host; the IP camera is electrically connected with the IPOC conversion module; the IPOC conversion module is electrically connected with the monitoring host through a coaxial cable; The monitoring host is provided with a mainend subcarrier module and a main end link repair module. the IPOC conversion module is internally provided with a slave end subcarrier module and a slave end link repair module; wherein an MCU main control chip and a 485 communication circuit are arranged in the master end link repair module, the MCU main control chip is electrically connected with the 485 communication circuit, a 3521 main control unit and a 485 communication circuit are arranged in the slave end link repair module, and the 3521 main control unit is electrically connected with the 485 communication circuit. According to theinvention, the problem of offline crash can be well solved, and the coherence and stability of the monitoring system are improved.
Description
technical field [0001] The invention relates to the technical field of PLC links, more specifically, to a subcarrier link repair system based on coaxial transmission. Background technique [0002] The video surveillance system in urban rail transit is an important guarantee system for operation and public security, and it has shown new characteristics in recent years. From the operation of the first domestic subway to now, video surveillance technology has gone through three development cycles: from analog networking to digital networking based on DVR, and today's full digital networking. The rail transit in many cities starts directly from digital high-definition. The advantages of digitalization are reflected in the high interference of the overall system, the convenience of networking, and the openness of interfaces. The advantages of high-definition are reflected in more details and information. Visual management Provides great possibilities and room for imagination. M...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N7/10
Inventor 郑斌冯成林
Owner 广州市源瑞信息科技有限公司