基于DSP的变频器控制人机交互接口设计

Man-machine Interface Design of Inverter Controlling Based on DSP

摘要:

介绍了一种基于DSP的变频器控制接口电路；在硬件方面,以TMS320LF28035 DSP为控制器,基于其EVM板为扩展数字接口和显示模块；软件方面,使用定时器中断对键盘进行管理,在节约DSP硬件资源的同时完成人机交互；电路达到了通用变频器对于数据输入和输出显示的使用要求,利用串并行相互转换芯片起到了节约硬件资源的作用,为变频器实现更多控制功能奠定了基础；与此同时,减少了DSP控制引脚在人机接口方面的数量,增强了电路的可靠性。

Abstract:

Man-machine interface of inverter controlling based on DSP was introduced. In terms of hardware, TMS320LF28035 DSP was a controller, which is based on its EVM entry plate for extended digital interface and display module; In terms of software, the timer interrupt managed the keyboard. As soon as hardware resources of DSP were saved, the man-machine interaction has been finished. Using serial parallel transformation chip, the circuit, which has been designed in the paper, can achieve the purpose of the general frequency converter for data input and output. Based on the above, the circuit established a foundation for frequency converter to achieve more control function. At the same time, the control pin numbers of DSP used in the human-computer interface are reduced, which enhanced the reliability of the circuit.