基于C8051F023的多叶光栅叶片控制模块的设计
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摘要
多叶光栅是精确放射治疗必需的设备之一。目前临床上多使用多叶光栅代替传统挡铅完成三维适形治疗和静态调强治疗,动态调强治疗所要求的对多叶光栅叶片速度控制的实时性和高精度一直难以实现。针对动态调强对叶片控制的要求,以C8051F023为核心处理器,结合专用电机驱动芯片NJM3771D2,设计了多叶光栅叶片控制模块。并发展了PID闭环控制方法,对多叶光栅叶片的运动位移和速度进行了实时反馈测速、分析和PWM输出调节,实现了对多叶光栅叶片运动位移和速度的精确控制,满足多叶光栅动态调强对叶片的控制要求。此模块设计结构简单,稳定可靠,控制精度高,将应用于具有动态调强功能的多叶光栅系统的实现中。
Dynamic Multi-Leaf Collimator(DMLC) is one of the necessary equipments for accurate radiation therapy.In clinical DMLC is often used instead of the traditional block lead to complete three-dimensional conformal treatment and static Intensity-modulated radiation therapy(IMRT) treatment.Real-time and accurate control of the speed of the leaves required in Dynamic IMRT treatment has been difficult to achieve.For the requirements of Dynamic IMRT treatment,a control module for the leaves of DMLC is designed based on C8051F023 as the core processor combined with motor driver NJM3771D2.PID closed-loop control is developed to the control of the movements of the leaves.By calculating real-time feedback of the position and speed,analyzing and regulating the PWM output,accurate control of the movement of the leaves is achieved.This module has the characteristic of simple,stable,and has a high control accuracy,and will be used in the development of DMLC to achieve the Dynamic IMRT treatment.
Dynamic Multi-Leaf Collimator(DMLC) is one of the necessary equipments for accurate radiation therapy.In clinical DMLC is often used instead of the traditional block lead to complete three-dimensional conformal treatment and static Intensity-modulated radiation therapy(IMRT) treatment.Real-time and accurate control of the speed of the leaves required in Dynamic IMRT treatment has been difficult to achieve.For the requirements of Dynamic IMRT treatment,a control module for the leaves of DMLC is designed based on C8051F023 as the core processor combined with motor driver NJM3771D2.PID closed-loop control is developed to the control of the movements of the leaves.By calculating real-time feedback of the position and speed,analyzing and regulating the PWM output,accurate control of the movement of the leaves is achieved.This module has the characteristic of simple,stable,and has a high control accuracy,and will be used in the development of DMLC to achieve the Dynamic IMRT treatment.
引文
1胡逸民.肿瘤放射物理学.北京:原子能出版社,1999
2钟睿.多叶光栅控制系统的设计与实现.成都:四川大学学位论文,2006
3吴宜灿,李国立,陶声祥,等.精确放射治疗计划系统ARTS的研究与发展.中国医学物理学杂志,2005;22(6):283—290
4吴宜灿,宋钢,曹瑞芬,等.精确放射治疗计划和质量保证系统ARTS的研究与发展.中国物理C,2008;32:1—6
5景佳,裴曦,汪冬.基于子野形状约束的多叶光栅调强算法研究.第十四届全国核物理大会暨第十届会员代表大会论文集.北京:中国核物理学会.2012
6金雏凤,刘慧,郑华庆,等.基于放射治疗计划系统的二重癌风险预测分析.核技术,2011;34(10):757—761
7宋钢.精确放射治疗中混合剂量计算方法及软件系统设计研究.合肥:中国科学院等离子体物理研究所,2008
8曹瑞芬,吴宜灿,裴曦,等.精确放疗中理想计划的多目标优化.中国物理C,2011;35(3):313—317
9曹瑞芬.逆向调强放疗计划系统设计及其优化方法研究.合肥:中国科学院博士论文,2009
10李国丽.ARTS系统中外放射治疗逆向计划多目标进化算法研究.合肥:中国科学院博士论文,2006
11裴曦,曹瑞芬,景佳,等.调强放射治疗子野权重优化方法研究.原子核物理评论,2011;3:103—108
12汪冬,裴曦,曹瑞芬,吴宜灿,等.多叶光栅控制软件的设计与实现.中国医学物理学杂志,2012;29(4):3523—3527
13 Cygnal Integrated Products,Inc.C8051F023 Mixed-signal ISPFLASH MCU Family datasheet.2002:10
14马英杰,黄运生,陈学.基于NJM3771D2的步进电机细分控制系统的设计.仪器仪表用户,2009;16:15—17
2钟睿.多叶光栅控制系统的设计与实现.成都:四川大学学位论文,2006
3吴宜灿,李国立,陶声祥,等.精确放射治疗计划系统ARTS的研究与发展.中国医学物理学杂志,2005;22(6):283—290
4吴宜灿,宋钢,曹瑞芬,等.精确放射治疗计划和质量保证系统ARTS的研究与发展.中国物理C,2008;32:1—6
5景佳,裴曦,汪冬.基于子野形状约束的多叶光栅调强算法研究.第十四届全国核物理大会暨第十届会员代表大会论文集.北京:中国核物理学会.2012
6金雏凤,刘慧,郑华庆,等.基于放射治疗计划系统的二重癌风险预测分析.核技术,2011;34(10):757—761
7宋钢.精确放射治疗中混合剂量计算方法及软件系统设计研究.合肥:中国科学院等离子体物理研究所,2008
8曹瑞芬,吴宜灿,裴曦,等.精确放疗中理想计划的多目标优化.中国物理C,2011;35(3):313—317
9曹瑞芬.逆向调强放疗计划系统设计及其优化方法研究.合肥:中国科学院博士论文,2009
10李国丽.ARTS系统中外放射治疗逆向计划多目标进化算法研究.合肥:中国科学院博士论文,2006
11裴曦,曹瑞芬,景佳,等.调强放射治疗子野权重优化方法研究.原子核物理评论,2011;3:103—108
12汪冬,裴曦,曹瑞芬,吴宜灿,等.多叶光栅控制软件的设计与实现.中国医学物理学杂志,2012;29(4):3523—3527
13 Cygnal Integrated Products,Inc.C8051F023 Mixed-signal ISPFLASH MCU Family datasheet.2002:10
14马英杰,黄运生,陈学.基于NJM3771D2的步进电机细分控制系统的设计.仪器仪表用户,2009;16:15—17