Video signal failure warning control method

Abstract

The invention discloses a video signal failure warning control method, and relates to the technical field of video signal failure warning. A video signal conversion device, a filter device, a voltage comparison device, a rapid-charging and slow-discharging device and a warning device, which are orderly connected, are used in the method. In the voltage comparison device, the voltage input by a comparison voltage input end of a voltage comparator is less than 2.5V, and the voltage output by an output end of the voltage comparator is 0V, conversely, the voltage output by the output end of the voltage comparator is the voltage input by the comparison voltage input end of the voltage comparator. When a camera cannot work normally, the warning device can give an alarm in time, when a manager hears or sees the alarm, the manager can repair the failed camera in time; and the warning device of the video signals can be displayed on a displayer, so that workers can know the failed camera just by observing the displayer.

Description

technical field [0001] The invention relates to the technical field of video signal fault alarm, in particular to a video signal fault alarm control method. Background technique [0002] Video surveillance is an important part of the security system, and it is a comprehensive system with strong prevention capabilities. Video surveillance is widely used in many occasions because of its intuition, accuracy, timeliness and rich information content. In recent years, with the rapid development of computer, network, image processing and transmission technology, video surveillance technology has also made great progress. [0003] With the development and popularization of video surveillance technology, it can be seen everywhere in life. Real-time video monitoring technology, from the perspective of application scenarios, real-time video can be used in a variety of outdoor occasions, such as the traffic accident-prone area of ​​the expressway, the position of the expressway checkp...

AI Technical Summary

Problems solved by technology

[0004] With the popularity of real-time video surveillance, the display of video surveillance also changes accordingly. One camera should correspond to one display window. If the number of cameras is small, it is easy to control each camera. When there are hundreds of surveillance cameras, it is easy There may be some difficulties in display, so there will be a TV wall to complete the task of real-time video surveillance display, but when there are thousands of surveillance cameras, if you want to display the real-time scenes transmitted by each camera in real time, In this way, it is impossible for the TV wall to meet such needs.

This will inevitably only display the video information of some cameras, and then display the video information of each camera in turn, then there will always be some cameras operating in the background, and the display screen in the foreground cannot see the information of these cameras at all, so in the background If the working camera has no video signal, the staff cannot find it

If there is no signal from the camera for a short period of time, it is normal. If there is no signal for a long time, it means that the camera has failed. If the administrator cannot be notified of this information in time, very useful video information may be missed.

In view of the above-mentioned technical problems such as the video signal failure of background operation or the video signal failure of work in the foreground, the present invention will solve these existing technical problems

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