LIU Ju, HOU Wen-sheng, ZHENG Xiao-lin. Design of direction angle measurement system of laparoscope based on magnetoresistive sensor[J]. 2012, 31(11): 111-114.
LIU Ju, HOU Wen-sheng, ZHENG Xiao-lin. Design of direction angle measurement system of laparoscope based on magnetoresistive sensor[J]. 2012, 31(11): 111-114. DOI: 10.13873/j.1000-97872012.11.018.
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.