基于ARM7的喷气织机电磁阀控制电路

为完成喷气织机高频电磁阀的实时控制,提升对电磁阀工作时的故障检测能力,设计了基于ARM7的电磁阀高速驱动和电流检测反馈控制系统。以ARM7处理器的芯片LPC2478为微控制器,并在数据、地址总线基础上,通过采用复杂可编程逻辑器件(CPLD)扩展了输出口线;针对喷气织机电磁阀高频特性,设计了高、低压复合的驱动控制电路;为判断电磁阀工作性能的优劣,增加了电流检测环节。试验结果表明,该系统运行稳定、高效,通过对电流检测反馈数据的分析,提高了喷气织机生产的质量和效率。

Control circuit for air-jet loom solenoid valve based on ARM7

In order to complete the real-time control of air-jet loom high frequency solenoid valve,and to promote the fault detection ability of solenoid valve when they work,a control system of high speed driving and current detecting feedback of solenoid valve with ARM7 was designed.ARM7 process chip LPC2478 was used as microcontroller,then an output line expansion circuit was designed with complex programmable logic device（CPLD） on the basis of microprocessor date/address bus.A high speed driving circuit was designed by the high,low voltage composite technology with the characteristic of air-jet loom solenoid valve.Current detecting part was added for judging the working performance of solenoid valve.The test results show that the system has stable operation,high efficiency.The production quality and efficiency of air-jet loom are improved by the research of current detecting feedback data.