基于8255A和ADC0809芯片设计实现压力控制系统,主要应用于用风门控制风道压力的情况之下。主要用到的硬件有传感器、步进电机和CPU外围接口芯片可编程外围接口芯片——8255A,A/D转换器ADC0809。系统既可以节省人力资源,又可以使这项繁琐而又难实现的工作变得简单又轻松。真正实现我们所谓的监测和控制。 Based on 8255A and ADC0809 chip design to achieve pressure control system, mainly used in the control of air duct pressure with the case. The main hardware used sensors, stepper motor and CPU peripheral interface chip programmable peripheral interface chip - 8255A, A / D converter ADC0809. The system saves both human resources and makes this tedious and difficult task easy and easy. Truly realize what we call monitoring and control.