家庭安全用电控制系统设计 毕业设计.doc

家庭安全用电控制系统设计 摘要 本设计是利用8051单片机芯片技术，结合8255可编程并行I/O接口扩展芯片和HD44780字符液晶显示模块及ISD2560语音芯片的家庭安全用电控制装置。以电磁感应线圈和变压器的输出电压为检测用电发生漏电、过载、短路和超压故障时的电压信号，由TA7666 电压比较集成电路把信号电压分为5个级别，利用8051单片机芯片进行电压PID控制，运用HD44780字符液晶显示模块和ISD2650语音芯片，使其具有字符显示和语音提示功能，在严重故障时又能自动提前跳闸。该设计可实现家庭用电的安全状态监测，非安全状态下的字符和语音提示以及严重故障时自动提前跳闸的功能。 关键词： 8051单片机芯片；HD44780字符液晶显示模块；ISD2560语音芯片 Home security to use electric control system design Abstract This design is the use of the 8051 MCU technology, combined with HD44780 character LCD module and the ISD2560 speech chip power control device home security. Uses output voltage of the electromagnetic induction coil and transform -er as voltage signal of the examination family has the leakage, the overload, the short circuit and presses when the breakdown, voltage comparator integrated cir -cuits to the TA7666 is divided into five levels of signal voltage, through 8051 MCU controlling, utilizes the HD44780 character LCD module and the ISD2560 speech chip, enables it to prompt the character and the voice, when serious failu -re can automaticly advance trip. To change the unitary function of leakage pro -tector and the overload protector, the breakdown appears when short comings and so on any prompt, make the family electricity safer and reliabler. Keywords：8051 MCU controlling; HD44780 character LCD module; ISD2560 speech chip 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc294211798 1 绪论 PAGEREF _Toc294211798 \h 1 HYPERLINK \l _Toc294211799 1.1 安全用电控制系统的定义 PAGEREF _Toc294211799 \h 1 HYPERLINK \l _Toc294211800 1.2 家庭安全用电控制系统的介绍 PAGEREF _Toc294211800 \h 1 HYPERLINK \l _Toc294211801 1.3 传感器技术的应用、发展现状及本设计的意义 PAGEREF _Toc294211801 \h 2 HYPERLINK \l _Toc294211802 1.3.1 传感器技术的应用和发展现状 PAGEREF _Toc294211802 \h 2 HYPERLINK \l _Toc294211803 1.3.2 本设计的意义 PAGEREF _Toc294211803 \h 3 HYPERLINK \l _Toc294211804 2 家庭安全用电控制系统硬件设计 PAGEREF _Toc294211804 \h 3 HYPERLINK \l _Toc294211805 2.1 硬件组成及原理图 PAGEREF _Toc294211805 \h 3 HYPERLINK \l _Toc294211806 2.1.1 8051单片机 PAGEREF _Toc