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现在市场上的报警装置大部分只适用于固定物品的防盗,可移动的报警装置又不便随身携带且价格昂贵,一般人们难以接受。利用数字电路设计了一种小型断开式报警装置。装置主要由三极管、电容以及红外接收装置组成,具有报警距离可调、灵敏可靠、响度大和功耗小等优点,适用于手包袋、银行卡等物品的被盗报警。
Most of the alarm devices on the market today are only suitable for the immobilization of fixed articles. The portable alarm device is inconvenient to carry and expensive, which is generally unacceptable to the public. Using digital circuit design a small disconnect alarm device. The device is mainly composed of a transistor, a capacitor and an infrared receiving device. The device is provided with the advantages of adjustable alarm distance, high sensitivity and reliability, large loudness and low power consumption, and is applicable to the theft alarms of hand bag bags, bank cards and the like.