双CPU电力直流电源系统控制器

Dual-CPU Controller of DC Power Supply System

介绍了一种新型结构的电力直流电源控制器 ,在该控制器中采用了双CPU并行处理工作结构 ,两CPU间采用共享I2 C总线方式交换数据。还介绍了利用硬件电路结合软件实现共享I2 C总线的方法 ,该方法解决了内部不含有I2 C总线专用寄存器的CPU系列 ,如ATMEL89C5X系列、IN TEL80 31等无法直接实现总线竞争从而共享I2 C总线的问题。在实际电路中证实这种共享总线的方法简化了CPU的外围电路 ,提高了控制器的工作效率 ,增强了电路的可靠性。

A new architecture controller of DC power supply system is introduced, which adopts two CPUs working in parallel. The two CPUs exchange data based on shared I 2C bus. The I 2C bus sharing is implemented by the combination of HW circuits and SW design. This method can be used for those CPU series, such as ATMEL 89C5X and INTEL 8031, which have no the registers dedicated to I 2C bus to realize the bus competition for bus sharing. It simplifies the circuit design, improves the efficiency of the controller and enhances the reliability of the circuits.