False alarm caused by alarm device failure and method for reducing false alarm

The product cannot be completed under the specified conditions and within the specified time, and is called a fault. The types of faults are damaging faults and drifting faults. Damage failures include all failures and sudden failures of performance. Such faults are usually caused by damage to components or poor manufacturing processes (such as solder joints). A drift fault is a fault caused by the drift of the parameters of the component and the voltage of the power supply. For example, if the temperature is too high, it will cause a change in the resistance value. At this time, the device behaves as good or bad. In fact, factors such as ambient temperature, component manufacturing process, equipment manufacturing process, usage time, storage time, and power load can cause component parameters to change and produce drift faults.

Whether it is a damaging fault or a drifting fault will cause the system to false alarm. To reduce the false alarms generated, efforts should be made from the following aspects.

(1) The production equipment of alarm equipment must improve the design level and technological level of the product. At the same time as the system design, it also needs reliability design, such as redundant design, electromagnetic compatibility design, three-proof design (moisture-proof, salt-proof). Fog, anti-fungal), drift reliability design, etc. On this basis, improve the reliability of the product manufacturing process, such as strict screening of component quality; strict quality supervision and management of the production process to ensure that product quality meets the requirements of relevant standards.

Units or individuals that sell alarm equipment shall conduct strict incoming inspection. The inspection contents are: product quality inspection certificate; industrial production license or safety certification certificate or production registration approval certificate of the production enterprise.

(2) The administrative department shall organize regular and irregular inspections and spot checks on the security market, and find that illegal activities in the production and sale of security products shall be handled in strict accordance with the provisions of the “Administrative Measures for Safety Technology Prevention Products”.

(3) The alarm system construction unit (user) shall clearly require the construction unit to select the products that have passed the inspection by the authorized testing organization in the corresponding project documents; the foreign equipment shall use the products imported by the formal channels and qualified according to the international advanced standards.

(4) In order to ensure the good working condition of the alarm system, a regular inspection and maintenance system must be established. Incidentally, at present, the maintenance method of China's alarm system needs to be resolved. It is best to repair the maintenance of the project construction unit for the maintenance of the professional maintenance company. This will not only facilitate the use of maintenance resources (maintenance personnel, maintenance equipment, maintenance spare parts, etc.). The improvement of the maintenance level, more importantly, can improve the reliability of the security system.