摘要
本文详细介绍了ISD4004语音芯片的引脚描述,SPI接口定义及其命令格式和时序,并针对ISD语音芯片的特点,设计一种用单片机系统控制,能够进行实时信号处理和自动控制的电梯语音系统。文中对整个系统的电路原理,电梯信号的采集以及片机和ISD器件的接口等硬件原理作了详细论述。软件部分针对电梯语音服务的要求,通过对电梯系统中特殊信号的逻辑判断,来完成对电梯语音服务的智能化控制,文中还重点介绍了对ISD4004的分段提取语音的控制方案。本系统成功实现了高层建筑物中电梯语音服务的智能化和自动化。
This article introduces the pin descriptions. SPI interface definition, the command format and timing diagram of ISD4004. in detail. To ISD phonetic chip characteristics, design a elevator phonetic system controlled by singlechip system, which can process signal in real time and be controlled automatically. In the article, the whole circuit principle of the system, the collection of signal of the elevator and the interface between the singlechip and ISD4004 is discussed in detail. To the demand of pronunciation service of the elevator, through the judgement of special signal logically, the software has realized intelligent control of the elevator phonetic system. It also introduces the scheme of control in finding voice by segment of ISD4004 especially in the allicle. The elevator phonetic system has realized the intelligence and automation of the phonetic service of the elevator in the high-story building.
