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随着人们生活水平的提高,楼道程控防盗传呼对讲安全门倍受青睐,但市售程控防盗对讲门,价格昂贵。本文介绍的程控防盗门对讲装置,具有电路结构简单,操作方便,功能齐全,性价比高(全部元器件不超过百元),便于操作等特点。 1.电路工作原理 该装置由IC_1～IC_6音乐集成块、IC_7、IC_8程控编码解码器,触发电路所构成的传呼系统。BM_1～BM_6送话器,BE_1～BE_7受话器、IC_9音频放大器所构成的对讲系统。SB_1～SB_6按钮开关、三极管V、继电器K构成的门锁程控开关系统三大组成部分。如附图所示其工作原理为:控制信号在IC_8集成电路
With the improvement of people’s living standards, corridors program-controlled anti-theft paging intercom security door is favored, but the commercial program-controlled security intercom door, expensive. This article describes the program-controlled security door intercom device, with a simple circuit structure, easy operation, complete functions, cost-effective (all components do not exceed one hundred yuan), easy to operate and so on. 1. circuit works The device consists of IC_1 ~ IC_6 music integrated block, IC_7, IC_8 program-controlled codecs, trigger circuit consisting of paging system. BM_1 ~ BM_6 microphone, BE_1 ~ BE_7 receiver, IC_9 audio amplifier consisting of intercom system. SB_1 ~ SB_6 button switch, transistor V, relay K constitute the door lock program-controlled switch system consists of three components. As shown in the figure, its working principle is: control signal IC_8 integrated circuit