【摘要】 该系统通过人体热释电传感器,门磁位移传感器采集报警信息;单片机AT89C55WD控制电话双音频编解码芯片MT8888和语音芯片ISD1420以及ISD1110实现报警,实现了自动电话报警、警笛现场提示、电话远程遥控等功能,适用于小区、工厂等易于集中管理地方的安全防护工作。并在文中给出了系统框图、部分硬件电路图及程序设计图。更多还原

【Abstract】 This paper introduces an intelligent community security system, which collects alarm signals with the infrared ray sensor and the magnetic induction sensor. The microcontroller AT89C55WD controls MT8888 DTMF transceiver, voice chip ISD1420 and ISD1110 to give an alarm. The system accomplishes alarming with phone automatically, whistling at the spot, controlling remotely, exigency alarming and showing information of the alarming location. It is applicable for a zone or a factory where it is easy to mana-ge and guard intently. We also show the systemic graphs, part of hardware circuit gra-phs and program design graphs.更多还原