摘要
本文针对传统音频报警器的一个扬声器发出一种报警声音缺陷和不足,基于AVR单片机中8位微处理器Atmega8,设计了一种采用一个扬声器即可输出八种报警声音的多音频报警器,通过将报警声音表示为中断时间常数和中断次数的数组,实现报警器的多音频输出功能。本文详细阐述了多音频报警器的工作原理和系统构成,描述了主要模块的硬件电路设计,给出了报警声音的转换策略以及整个系统的软件实现方法。实际使用结果表明:多音频报警器硬件电路可靠,性能稳定。
Aiming at the disadvantage of traditional audio alarm,a multi audio alarm which can produce eight kinds of sound using only one trumpet is developed based on the 8-bit microprocessor Atmega8 of AVR MCU.By representing the sound data as the array of interrupt time constant and interruptions,the multi audio output of alarm was realized.The system structure and working principle of the instrument is discussed,the hardware design about the core module is described in detail.The conversion strategy of the sound and the software Systematic Implementation Method is presented.The experiment results showed that the instrument has many advantages,for example,stable hardware and reliable performance.
出处
《现代科学仪器》
2013年第4期145-147,共3页
Modern Scientific Instruments
