基于ISD1700SPI协议模式的语音报警系统

为了能在语音报警系统中实现更加人性化的控制、操作及监测功能，本文以PIC16F877单片机作为控制模块核心，采用热释电红外传感器PIS-209S作为前端探测器，通过SPI协议模式对语音芯片ISD1700进行语音录放功能的精确操控，实现语音的分段录放、循环播放、查询播放等功能。系统启动报警后，控制预先存有的报警内容进行若干次语音警告，同时对现场进行录音并记录报警时间，并通过人机界面查询显示屏上的报警时间。测试结果表明，该系统能真实的再现语音效果，运行稳定、可靠。

SPI agreement for multifunction phonetic warning system based on ISD1700

In order to realize more personalization, management, operation and the monitoring in the phonetic warning system, this paper consider PIC16F877 as the core, the use of pyroelectric infrared sensors PIS-209S as the front-end detectors, It controls the function of voice recording of phonetic chip ISD1700 by the mode of SPI agreement to realize record and play, enquiry play and combination play of Phonetic is used. When the alarm turns on, the system controls the forewarn to alarm several times, The tape and record of scene at the same time, check and show the alarm time on the screen through good interfaces. The test results show that this system can reproduce the voice effects, and run stable, reliable.