具有实时语音播报的超声波测距仪的设计与报告..docVIP

具有实时语音播报的超声波测距仪的设计与总结报告 摘要： 本系统采用集成语音播报电路功能、键盘电路功能及便于携带、方便操作等优点于一体的由干电池供电的凌阳SPCE061A为核心控制器件，采用NE555和电容电阻组成的电路产生40KHz的方波，以使超声波传感器产生谐振，而后面的CD4049则对40KHz频率信号进行调理从而共同构成超声波谐振频率发生电路与调理电路；超声波回波接收处理部分的电路前级采用NE5532构成10000倍放大器，对接收信号进行放大，后级采用LM311比较器对接收信号进行调整。设计中充分利用凌阳SPCE061A单片机的运算及控制功能，由本系统构建的具有实时语音播报的超声波测距仪具有测量准确、反应迅速、工作稳定、低功耗、便于携带等特点。 关键字： 超声波测距 低功耗 凌阳SPCE061A单片机 实时语音播报 Abstract: The system integrated circuit voice broadcast function, the keyboard circuit functions and easy to carry, easy to operate in one of the advantages of dry-cell batteries powered by Sunplus SPCE061A as the core control device, the NE555 and the Capacitance of the circuit have a resistance component of the 40KHz square wave so that the ultrasonic sensors have a resonance, and the back of 40KHz frequency on the CD4049 signal conditioning in order to constitute the ultrasonic resonant frequency circuit and conditioning circuit; ultrasonic echo receive part of the circuit to deal with the use of pre-amplifier NE5532 constitute a 10000-fold, to receive signal amplification, after the introduction of the LM311 comparator to adjust the received signal. Take full advantage of the design of single-chip Sunplus SPCE061A computing and control functions, built by the system with real-time voice broadcast with the measurement of ultrasonic range finder is accurate, responsive, stable, low power consumption, easy to carry and so on. Key words: Ultrasonic ranging low-power single-chip Sunplus SPCE061A real-time voice broadcast 目录 系统设计 --------------------------------------（1） 1.1设计要求 -------------------------------------（1） 1.2方案比较与论证 --------------------------------（1） 1.2.1控制器方案的比较与选择 -------------------------（1） 1.2.2超声波谐振频率发生电路及调理电路方案的比较与选择（1） 1.3系统总体设计 ---------------------------------（2） 2.单元电路设计 ----------------------------------（2） 2.1超声波谐振频率发生电路及调理电路 ----------------（2） 2.2 超声波回波处理电路 ---------------------------（3） 3.软件设计 ---------------------------------------（3） 3.1开发软件 -------------