An intelligent monitor system of otologic drill to prevent drill bit entangling with the cotton
Otologic drill is an important ear surgical instrument and used to mill temporal bone. The cotton which is used to stop bleeding may be entangled with the drill and whirl. The rotary cotton can damage the tissues, such as nerves and cochlea. An intelligent control device has been designed to help doctors to operate the drill and prevent the cotton from causing damage to human. The intelligent control system installs current sensor, force sensor, computer and reverse braking device. It could use information fusion technique to recognize drilling fault and brake in 0.2 seconds. Its intelligent recognition algorithm is composed of a characteristic curve and an adaptive filter. The characteristic curve is designed according to the mathematical model of the cutting force. The curve calculated by the data of current and force is sensitive to drilling fault. In order to modify the error of model and improve recognition rate, an adaptive filter is designed to eliminate interferences in the characteristic curve. The adaptive filter could fuse multi-sensor information and take full advantage of the difference between interferences and drilling faults to suppress interferences. The drilling fault can be recognized by calculating the increment of filtering result. The system has been tested. The rate of identifying cotton swab entanglement is 95％. Only 0.5％ tests of the normal drilling are identified as drilling faults.
otologic drill characteristic curve adaptive filter multi-sensor information fusion
Tianyang Cao Xisheng Li Zhiqiang Gao Guodong Feng Peng Shen
School of Information Engineering University of Science and Technology Beijing Beijing,China Department of Otolaryngology Peking Union Medical College Hospital,Chinese Academy of Medical Scienc
国际会议
2010 IEEE信息与自动化国际会议(ICIA 2010)
哈尔滨
英文
1-5
2010-06-20（万方平台首次上网日期，不代表论文的发表时间）