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Remote video frequency image monitoring system

A monitoring system, remote video technology, applied in the direction of closed-circuit television system, transmission monitoring, transmission system, etc., can solve problems such as electromagnetic interference, long-distance transmission signal distortion, etc., and achieve the effect of convenient and simple maintenance

Inactive Publication Date: 2005-06-15
北京纳米德奔科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a remote video image monitoring system, which solves the problem of severe distortion of long-distance transmission signals and electromagnetic interference in complex industrial environments that cannot be solved by ordinary video cables

Method used

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  • Remote video frequency image monitoring system
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Examples

Experimental program
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Embodiment

[0021] see figure 1 and figure 2 . In the present invention, a video signal is input from a camera 1 to an image transmitter 2 . The cameras can be of various models. In this example, Sony cameras are used, and a total of 4 cameras are used. The collected video signal is a full TV signal (unbalanced signal), and the 4-way camera signal is input into the transmitter 2 at the same time with an 8-core twisted-pair shielded wire.

[0022] Please refer to image 3 , is the electrical schematic diagram of the transmitter 2 of the present invention. The core of the transmitter 2 uses a central processing unit (CPU) to process video signals. The CPU used in this example is LM61811N series. The specific model can be LM6181IM or LM6181IN. This example uses LM6181IM. The image is converted into a video signal after being collected by the front-end camera, the output is sent to the input terminal of the transmitter through the coaxial cable, and the signal passes through the electr...

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Abstract

The system is composed of shooting camera, image emitter, image receiver and monitoring equipment. The TV signal outputted from the shooting camera is converted to differential signal after it is blocking-processed in the emitter and is sent to two operational amplifications and then it is transmitted to receive at control centre through multicore twisted-pair shielded line after it is amplified and amplitude-limited. The differential signal is inputted to the same phase and reversing phase end of CPU operational amplification to convert it back to be single-end video signal after it is matched and it is blocking-outputted to the control room.

Description

technical field [0001] The invention relates to a video image monitoring system, which is mainly used for monitoring remote transmitted video images. Background technique [0002] The currently used monitoring transmission methods generally include the following methods: [0003] 1. Optical cable transmission mode [0004] The main advantages of this method are: (1) The transmission distance is long. Because the loss of the optical cable is very low during the transmission process, the attenuation per kilometer of the single-mode optical fiber is only about 1% of that of the video coaxial cable. Therefore, the analog optical fiber multi-channel The TV transmission system can realize 20KM non-relay transmission; (2) The transmission capacity is large. Generally speaking, one optical fiber can transmit dozens of channels of video signals at the same time. If multi-core optical fibers are used, the capacity can be doubled; (3) The transmission quality is high, using optical f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 舒富喜金一平
Owner 北京纳米德奔科技发展有限公司