基于单相全桥逆变拓扑的超声波测距系统设计  

Design of Ultrasonic Distance Measurement System Based on Single-phase Full-bridge Inverter Topology

作　　者：张悦[1] 陈劲操[1] 

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《仪表技术与传感器》2016年第4期67-70,共4页Instrument Technique and Sensor

摘　　要：针对生产生活中对非接触式距离测量的需求,设计了一种以ARM LPC2131为主控制器的超声波测距系统。研究分析了驱动超声波传感器的主电路方案,选取单相全桥逆变电路作为功率变换的拓扑结构。介绍了以IR2110为核心的MOS管驱动电路,对LPC2131输出的双路PWM波进行功率放大。搭建了以TV1013-1M为电压转换单元的信号调理电路,调节LPC2131 A/D采集器的输入电压在0～3.3 V范围内。基于ADS1.2实现了测距和通信过程的软件设计。结果表明系统可以有效完成超声波测距,测量精度高、可靠性强,具有推广应用价值。For the demand of non-contact distance measurement in production and living areas,an ultrasonic distance measurement system whose main controller was ARM LPC2131 was designed. The programs of ultrasonic sensor driven circuits were analyzed and single-phase full-bridge inverter circuit was selected as the power conversion topology. The driven circuit of MOS tube was introduced which chose IR2110 as its core to amplify the power of dual PWM wave output from LPC2131. The signal conditioning circuit was built which consists of voltage conversion unit TV1013- 1M,and the input voltage of AD collector was adjusted within 0 ～ 3. 3 V. Software design of distance measurement and communication was realized based on ADS1. 2. The results show that the system can effectively complete distance measurement,which owns high accuracy and reliability. The distance measurement system has application value and its usage can be extended.

关 键 词：ARM LPC2131 单相全桥逆变 双路PWM 信号调理 A/D采集器 通信 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]