| 一种新型CT模拟激光定位系统控制电路的设计与研究 |
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| 引用本文： | 廖福锡,陈超敏,徐子海,曾锦清,郑小溪. 一种新型CT模拟激光定位系统控制电路的设计与研究[J]. 医疗卫生装备, 2007, 28(2): 9-11 |
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| 作者姓名： | 廖福锡 陈超敏 徐子海 曾锦清 郑小溪 |
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| 作者单位： | 1. 解放军第303医院,南宁市,530021
2. 南方医科大学,广州市,510515 |
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| 基金项目： | 广东省科技厅科技计划;广东省自然科学基金 |
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| 摘 要： | CT模拟激光定位系统是放射治疗必不可少的辅助装置，主要是模拟治疗机按不同机型的条件定位。为了标定等中心位置，一般使用激光定位机指示。激光定位系统的核心技术其实就是步进电机的单片机控制，即利用对步进电机转动的精确控制来实现激光灯的准确运动。文中采用16位单片机MCS-51对步进电机进行控制，通过I／O口输出的时序方波作为步进电机的控制信号，信号经过8255驱动步进电机并准确控制激光灯的运动。该系统结构简单、操作方便、定位准确。
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| 关 键 词： | CT模拟 激光定位 MCS-51单片机 步进电机 |
| 文章编号： | 1003-8868（2007）02-0009-03 |
| 收稿时间： | 2006-10-20 |
| 修稿时间： | 2006-10-202007-01-10 |
Research on control circuit of a new CT simulation laser positioning system |
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| LIAO Fu-xi,CHEN Chao-min,XU Zi-hai,ZENG Jin-qin,ZHENG Xiao-xi. Research on control circuit of a new CT simulation laser positioning system[J]. Chinese Medical Equipment Journal, 2007, 28(2): 9-11 |
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| Authors: | LIAO Fu-xi CHEN Chao-min XU Zi-hai ZENG Jin-qin ZHENG Xiao-xi |
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| Affiliation: | 1.The 303rd hospital of PLA, Nanning 530021, China; 2. Southern Medical University, GuangZhou 510515, China |
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| Abstract: | CT laser simulation positioning system is a necessary auxiliary device for radiotherapy. Its main purpose is to position patients by simulating different kinds of treatment machine. In order to demarcate the mark of the iso-center, it is common to use the laser positioning device to indicate the iso-center. The kernel technology of the laser positioning system is the controlling of the step progress motor by using the MCS, which is to control the movement of step progress motor using the wheel of the motor. This design uses MCS-51 to control step progress motor by the way of exporting the rectangle wave form through I/O port of 8255 chip. The system configuration is simple, the operation is convenient and the positioning is precise. |
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| Keywords: | CT simulation laser orientation MSC-51 step progress motor |
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