| The TV monitoring and guarding system, as one kind of new pattern technique defense system, progressively substitute the traditional human and material defense and so on, is widely used to every territory, in case of banking profession, different type of warehouse, all trades and professions, such as factories and mines business and so on. To every engineering scheme design in monitoring and guarding system, wholly ought to be on the basis of the special function demand of the use's to the system, closely combine the feature of periphery environment in the monitoring and guarding area, long with the domestic and abroad material function feature and technique index about monitoring and guarding system, establishing one economical, reasonable efficiencies designing scheme fit for the system. To the most material and equipment which composing the monitoring and guarding system, can be purchased from a variety of goods in the business, but some more particular materials, ought to be designed by self. This paper proceeds from the actual situation on the engineering of monitoring and guarding system of the ordnance depot in liberation. Emphasizing to introduce the design theory, hardware composition, the software conception, and function feature of the synthetical fault analytical appliance in monitoring system, in which designed by self. To the ordnance depot in liberation, since the fact that the systematic scale is greatly, the systematic function is completely, composition is complex, to ensure the TV monitoring and guarding system working safely and reliably, require the mainly equipment and key link of the system to be effectively monitored and protected, therefore, reporting the early warming ahead of the probable fault, alarming in time for the happening fault. So that, the system resumes to the normal working situation. As to the video signal, alarm signal, control signal, are all weak electricity signal, exceedingly easily be subjected to the jam, in case the power supply system does not steady, wave propagation is greatly, the harmonic content of power source overtops, the veins wave factors are great unduly, and even power source equipment breakdown, outputting abnormal, will be about to affect the video signal image effect, and dependability cuts downs to thesecurity and alarming system. We adopt fast Fu Lye's mutation rule-FFT alternatives, by the way of carrying FFT alternatives to the local junction circuit, regulated power supply, UPS's power source, and switch power source, thereby diagnose every degree harmonious wave content of power souse, and abnormal coefficient, compared to the normal working situation. Thereby diagnose out the working condition of the regulated power supply, UPS's power source, and switch power source. The equipment consisting the monitoring system, over a long period of time is in the work condition, usually due to the radiating heat situation is not good, and the equipment degradation failure, and so on. cause the temperature of the equipment surface to overtop. Thereby failure-free operation of effect installation, Service life of Therefore, affect the equipment not to working well. This synthetical fault analytical appliance in monitoring system. adopt the DS18B20's figure temperature sensor, take the online measure to the key equipment of the system; As to the video signal in the monitoring system, Since the fact that video wire is tiny, and the connector is great, especially to those relative and removable video signal, The video wire is easy to break down, such as short circuit and so on, along with the video device is over a long period of time being in the circular telegram running state, also easily running into trouble, hence, valid means to be take adopt to the video signal.
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