Korn BorvorntanajanyaJackrit SuthakornMahidol University2019-08-232019-08-232018-09-10Proceedings - IEEE International Conference on Robotics and Automation. (2018), 4019-4024105047292-s2.0-85063148153https://repository.li.mahidol.ac.th/handle/20.500.14594/45563© 2018 IEEE. Ophthalmic anesthesia is an important preparation for eye surgery. The conventional practice is performed blind in a cadaver under the supervision of an experienced surgeon. This paper introduces a needle tip tracking system for ophthalmic anesthesia training without major modification of an anesthesia needle. The study presents a prototyped system to track a magnetized needle tip using Hall-effect sensor array. The orbital structure model was embedded with Hall-effect sensors after considering the sensing workspace and ophthalmic anesthesia pathway. The extended Kalman filter was used to calculate needle tip position. A commercial robotic manipulator was used to model the characteristics of sensor and accuracy of the developed system. A prototype can detect needle tip position with a root-mean-square deviation around 1.80 mm. As a result, the system is capable of providing needle tip positions for training purposes.Mahidol UniversityComputer ScienceEngineeringConference PaperSCOPUS10.1109/ICRA.2018.8461015