基于ARM的医用加速器摆位控制系统研制  

Development of medical accelerator positioning control system based on ARM

作　　者：陈明明[1] 陈颖[1] 陈相宁[1] 葛云[1] 

机构地区：[1]南京大学电子科学与工程学院,江苏南京210023

出　　处：《中国医学物理学杂志》2015年第6期790-793,共4页Chinese Journal of Medical Physics

基　　金：国家自然科学基金(81371638);中央高校基本科研业务费项目(1106021034);江苏省自然科学基金(BE2012158;BK2011393;BY2012186)

摘　　要：目的:为研究医用加速器摆位的自动化,研制了一种具有上位机、下位机和机械装置的辅助摆位控制系统,配合光学定位系统和红外定位系统使用,能够自动摆位到0.5 mm的精度范围。方法:上位机软件基于微软基础类库(MFC)开发,主要包括分析处理坐标信息和自动摆位控制算法。下位机基于高级精简指令集机器(ARM)微控制器开发,包括RS232串口通信电路、舵机控制电路及电源等,主要通过控制舵机来操作加速器床的控制面板。结果:通过实验调试和临床测试,该系统能够准确地和光学定位系统交互,能完成自动化摆位,精度符合要求,摆位时间缩短。结论:该方案是创新性设计,软件操作简单,硬件安装方便,具有低成本低功耗的特点。Objective To study on the automation of medical accelerator positioning by developing an assist positioning control system with host computer, slave computer and mechanical devices. Combined with optical positioning system （OPS） and infrared positioning system, the system can achieve the automatic positioning accuracy of 0.5 mm. Methods Host computer soRware was developed based on MFC, including the analysis and processing of coordinate information, and automatic positioning control algorithm. And the slave computer was developed based on ARM microcontroller, including RS232 serial communication circuit, servo control circuit and power supply. The control panel of accelerator bed was mainly operated by controlling servo. Results After the experimental debugging and clinical commissioning test, the system could accurately interact with OPS system, and achieve the automatic positioning. Additionally, the positioning accuracy met the requirements and the positioning time was shortened. Conclusion The program is an innovative design, with sample software operation, easy hardware installation, low cost and low power.

关 键 词：医用加速器 光学定位系统 自动摆位 ARM微控制器 舵机控制 

分 类 号：R318.6[医药卫生—生物医学工程] TP241[医药卫生—基础医学]