基于SPI驱动的智能调节阀控制系统研究

Research on intelligent regulating valve control system based on SPI drive

针对工业过程控制领域的气动调节阀阀口开度的控制要求,研究一种带有SPI驱动显示的基于MSP430单片机的智能阀位开度控制系统。硬件系统部分由MSP430驱动电路、采样电路、后端PWM驱动以及外围功能芯片等构成;软件系统采用模块化设计思想,通过中断使CPU进入低功耗模式,降低系统功耗,提高工作效率。经测试表明,与传统的力平衡原理阀位调控装置相比,该系统具有数字化、智能化、响应迅速的特点。

In view of the valve opening control requirement of the pneumatic regulating valve in industrial process control field, an MSP430 SCM based intelligent valve position opening control system with SPI drive display is studied. The hardware system is composed of MSP430 drive circuit, sampling circuit, back-end PWM drive, and peripheral thnetional chip. In the soft- ware system, the modular design idea is adopted and the CPU enters low power consumption mode by means of interruption to reduce power consumption of the system and improve work efficiency. The test results show that the system has the characteris- tics of digitalization, intelligence and fast response in comparison with the traditional valve position regulation and control device applying the force balance principle.