基于磁阻传感器的腹腔镜方向角测量系统设计  

Design of direction angle measurement system of laparoscope based on magnetoresistive sensor

作　　者：刘菊[1] 侯文生[1] 郑小林[1] 

机构地区：[1]重庆大学生物工程学院,重庆400030

出　　处：《传感器与微系统》2012年第11期111-114,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(30700160);重庆自然科学基金资助项目(CSTC2006BA5005);重庆市科技计划资助项目(CSTC2010AC5029)

摘　　要：提出了一种基于三轴磁阻传感器芯片HMC5883L和以8051系列单片机为核心的多路方向角测量方法,主要应用于体内手术、微创手术等不可视环境。通过绑定在运动器械上的三轴磁阻传感器实时测量地球磁场产生的磁感应强度。利用磁偶极子模型,对测量结果数值分析、处理得到各自绑定的运动器械的方向角角度值。实验证明:这种低成本的解决方法对低速运动的器械测量具有较高稳定性和可靠性。A multi-path direction angle measuring method based on 3-axis magneto-resistive sensor chip HMC5883L and 8051 series SCM,which is mainly used in invasive surgeries is presented.The magnetic induction of the earth can be detected by the 3-axis magneto-resistive sensor which is bound on the surgical instrument.The direction angle value of the surgical instrument can be acquired through using the magnetic dipole model to analyze and process the measured results.The experimenal results indicate that the low-cost solution method for measuring the direction angle of surgical instrument has high stability and reliability.

关 键 词：磁阻传感器 方向角测量 腹腔镜 8051系列单片机 

分 类 号：R318.6[医药卫生—生物医学工程]