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Common faults in closed-circuit television monitoring and their solutions

Common faults in closed-circuit television monitoring and their solutions

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In a monitoring system into the commissioning phase and commissioning phase and after delivery, there may be such a failure phenomenon, such as: normal operation, system is not up to the technical index, the design requirements of the overall performance and quality is not ideal, that is some soft faults". These problems are unavoidable for a monitoring project, especially for a complex and large-scale monitoring project.
Because some equipment (such as PTZ cameras and lenses with three variable) has many links, if not handled well, especially with the equipment connecting lines are not handled properly, there will be open circuit, short circuit, wire insulation, as a result of adverse false wiring damage, equipment performance drop problem. In this case, according to the phenomenon of failure calmly analysis, to judge in a number of lines is due to what the connection of the line has problems, then produce that kind of fault. This will narrow the scope of the problem. It is particularly worth noting that with the pan tilt camera with a full range of motion, a long time, resulting in line off, break is common. Therefore, special attention should be paid to the connection between the equipment and the various lines of the equipment in accordance with the requirements of long time operation.
Device fault caused by incorrect power supply. The incorrect power generally has the following several possibilities: power lines or power supply voltage is not correct, the power is not enough (or a road supply line size is not enough, the big buck), transmission line power supply system of the short circuit, open circuit, instantaneous overvoltage etc.. In particular, equipment failures due to power supply errors or transient overvoltage have occurred. Therefore, in the system debugging, before power supply, we must seriously and strictly check and check, should not be taken lightly.
The quality of the equipment or parts itself. Theoretically, quality problems can occur in all kinds of equipment and parts. But in experience, the quality of the product itself is the most important. It occurs on the decoder, the electric pan head and the transmission parts. It is worth pointing out that some equipment may not appear on the whole quality problems can not be used, but in some technical indicators can not reach the specifications given in the product specifications. Therefore, the necessary sampling must be carried out for the selected products. If it is a product quality problem, the best way is to replace the product, and should not be removed and repaired.In addition, the most common problem is due to improper adjustment of the equipment. For example, the camera after the adjustment of the intercept is very meticulous and accurate work, if not carefully adjusted, there will be poor focus, or in three variable lens defocus occurs when the various operations. In addition, the camera switches and some adjustment knob is in the right position and whether it meets the technical requirements of the system, decoder encoding switch or other adjustable position is correct or not will directly affect the normal use of the equipment itself or affect the normal performance of the whole system.

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