摘要
介绍了一种以单片机AT89S52为核心,同时用74LS04驱动超声波发射探头,用CX20106A对接收信号进行放大、滤波、检波并输出负脉冲的低成本、高精度超声波测距系统的硬件和软件设计方法。实验证明,这套超声波测距系统软硬件设计合理、抗干扰能力强、实时性好。
This paper describes a design scheme of hardware and software of a low-cost, high-precision ultrasonic ranging system with microcontroller AT89S52 as the core. 74LS04 is used to drive ultrasonic transmitting probe and CX20106A is adopted for amplification, filtering and detection of the received signal and negative pulse output. Experimental results show that the hardware and software of the ultrasonic ranging system has reasonable design, strong anti-interference ability, and good real-time performance.
出处
《物联网技术》
2013年第1期18-19,共2页
Internet of things technologies
关键词
超声波
测距
单片机
高精度
ultrasonic
ranging
MCU
high precision
