声控电子锁的设计..doc

PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT II 摘 要 采用逻辑门电路设计电子密码锁，阐述了其工作原理，给出了具体的电路原理图。该密码锁具有密码预置功能，必威体育官网网址性强，误码报警，并且报警时间可以设定，同时用数码管显示出报警时间。密码正确时驱动继电器控制开锁指示灯，误码时报警信号由蜂鸣器发出，声音为间歇式鸣笛。使用时用户必须按下确认按钮后方可知用户输入的密码是否与预置密码一致，当密码正确时密码锁可以被打开，点亮绿色二极管亮代表密码正确，锁可以打开。密码不正确时按下确认按钮，红色二极管被点亮，同时蜂鸣器鸣笛十秒，数码管显示十秒倒计时；倒计时结束时，数码管显示00，对其产生的编码信号经门电路处理后转化为低电平信号，传给秒脉冲电路控制端，使其停止工作，从而脉冲驱动的蜂鸣器也停止报警。 关键词： 声控电子锁 逻辑门电路 计数器 Abstract Thel ogic gate circuit design electronic trick lock, expounds its working principle, give a specific circuit principle diagram. This combination lock has password preset functions, secrecy is strong, error alarm, and alarm time can set, and with a digital alarm time tubes to display. When the correct password is driving relay control the lock indicator light, error alarm signal when a voice for the buzzer, intermittent whistling. When using the user must be on the confirm button that behind the password of user input and preset password, whether consistent when the correct password combination lock can be open when, light green light represents the correct password, diode can open the lock. Password is not correct press confirm button, red diode to light, and ten seconds, sirens buzzer digital pipe display ten seconds to countdown; The end of the countdown, digital pipe display, to produce a signal gate after processing the code into low level signals to the second pulse, the control circuit, make its stop work and pulse of driver buzzer also stopped the police. KEY WORD：Audio control electronic lock logical gating circuit calculator 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc371622802 摘 要 PAGEREF _Toc371622802 \h I HYPERLINK \l _Toc371622803 Abstract PAGEREF _Toc371622803 \h II HYPERLINK \l _Toc371622804 第一章 绪论 PAGEREF _Toc371622804 \h 1 HYPERLINK \l _Toc371622805 第一节 选题依据 PAGEREF _Toc371622805 \h 1 HYPERLINK \l _Toc371622806 第二节 设计任务 PAGEREF _Toc371622806 \h 1 HYPERLINK \l _Toc371622807 第二章 系统总体方案选择 PAGEREF _Toc371622807 \h 2 HYPERLINK \l _Toc371622808 第一