摘要
简要介绍了红外遥控的原理以及红外信号编/解码方法,设计并实现了一种可通过红外信号遥控的倒计时器。该设计以8位单片机AT89C2051为核心,利用普通家电遥控器和红外接收头HS0038实现红外信号的发送和接收,一次性可编程语音芯片API840N用于产生提示语音,完成的倒计时器具有设计简洁、计时精度高、操作方便等优点。
This paper briefly introduces the principles of infrared remote control and the encoding/decoding methods of infrared signal. A countdown timer controlled by infrared signal is designed and implemented with an 8-bit single chip microcomputer AT89C2051 as its core. The transmission and reception of infrared signal are realized by ordinary remote controller of appliances and infrared receiver HS0038. The phonetic prompt is produced by using programmable speech chip API840N, This countdown timer has the advantage of simple design, high precision, and easy operation.
出处
《电子科技》
2006年第11期23-26,30,共5页
Electronic Science and Technology
关键词
倒计时器
红外遥控
语音提示
Countdown timer
infrared remote control
phonetic prompt
