电磁阀响应时间测试装置系统设计  

System Design of Response Time Test Device for Solenoid Valve

作　　者：石建民[1] 刘坤 SHI Jian-min;LIU Kun(Xi’an Jiaotong University,Xi’an 710049,China;School of Automation Science and Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学,陕西西安710049 [2]西安交通大学自动化科学与工程学院,陕西西安710049

出　　处：《计算机技术与发展》2022年第10期169-174,共6页Computer Technology and Development

基　　金：国家自然科学基金(61903293)。

摘　　要：电磁阀的响应时间是一个比较重要的参数,要测试这个参数就要对电磁阀的通断进行控制,控制电磁阀的线包电压要按照客户给出的电压曲线进行控制,它不是一个固定的电压加在线包上。该文介绍了这种控制的硬件电路设计与软件流程,系统的控制逻辑采用MCU控制,用C语言编程,便于修改与功能扩展。上位机使用VB编程,用串口通信控制MCU与参数设置。电磁阀的线包电压有吸合电压与保持电压,从吸合电压到保持电压之间切换控制是一个关键环节,在吸合电压与保持电压之间切换时要快速无间断,电磁阀的线包是感性负载,需要续流保护,客户有自己的特殊续流要求,通过介绍的控制电路可以满足客户提出的测试要求。此外,还设计了输出短路保护可以快速切断因意外引起的输出短路,从而保护装置不会损坏。装置从试运行开始就表现出良好的性能,已投入正常运行。The response time of solenoid valve is an important parameter.To test this parameter,it is necessary to control the on and off of solenoid valve.The coil voltage of solenoid valve should be controlled according to the voltage curve given by the customer,not a fixed voltage.We introduce the hardware design and software flow of this control.The system control operation is controlled by MCU,C language programming,which is more convenient for modification and function expansion.The upper computer uses VB programming and uses serial communication to control MCU and parameter setting.There are pull-in voltage and hold voltage in solenoid valve.The switch control from pull-in voltage to hold voltage is critical.The switch between pull-in voltage and hold voltage must be fast and uninterrupted.The coil of solenoid valve is an inductive load,which needs freewheeling protection.Customers have their own special freewheeling requirements,The control circuit introduced can meet the test requirements of customers.In addition,we also describe an output short circuit protection circuit.The protection circuit can quickly cut off the output in case of output short due to accidents,thus preventing device from being damaged.The device has shown excellent performance since its trial operation and has been put into normal operation.

关 键 词：电磁阀响应时间测试 响应时间 电磁阀线包控制 C语言应用 RS232 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]