精选优质文档-倾情为你奉上专心-专注-专业超声波防盗报警装置摘 要: 本次设计介绍了利用超声波敏感器件作为发射头和接受头, 发射器向被探测区域发射等幅超声波,接收器接收反射回来的超声波,在没有移动物体进入被探测区域时,反射回来的超声波是等幅的。当有活动的物体进入探测区域时,反射回来的超声波幅度不等,并且不断变化,接收电路检测到变化的信号控制电路做出反应即驱动报警。关键词: 超声波 防盗 报警Abstract:The design introduces a way to use the ultrasonic T/R head ,the launcher launches the same rate of ultrasound into the detecing area, and the receiver receives the reflection of the ultrasound back, in the absence of moving objects enter the detecing area,