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介绍了一种应用于医用重离子治疗装置（ Heavy Ion Medical Machine ， HIMM）的数字电源触摸屏控制系统，该设计采用PIC24单片机驱动触摸屏。依照电源系统的内部协议，实现了电源触摸屏控制系统的开关机控制、波形显示、状态显示以及参数设定等多种功能。该系统与电源核心数控板、状态板通讯测试正常稳定，本地操作更加方便、美观，比模拟控制方式稳定可靠，控制精度更高。“,”The touch screen control system is under development in Heavy Ion Medical Machine ( HIMM) pro-ject.In this paper , the touch screen control system is studied in detail , which is driven by PIC24 microcon-troller .According to the internal protocol of power system , control of power switch , waveform and state display , parameter setting are all implemented in this control system .The communication among microcontroller , FPGA board for power supply and state board is normal and stable during the test .Compared to analog switch control system, the local control system for HIMM is much more convenient and aesthetic , additionally the control ac-curacy is even higher .