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题名: Miniature pH sensor for capsule endoscopy with composite diagnosis
作者: Shao Q(邵琪) ; Liu H(刘浩) ; Li HY(李洪谊) ; Yang, Yunsheng
作者部门: 机器人学研究室
会议名称: 13th IEEE SENSORS Conference, SENSORS 2014
会议日期: November 2-5, 2014
会议地点: Valencia, Spain
会议主办者: IEEE Sensors Council (SC)
会议录: Proceedings of IEEE Sensors
会议录出版者: IEEE
会议录出版地: Piscataway, NJ, USA
出版日期: 2014
页码: 339-342
收录类别: EI
ISSN号: 1930-0395
关键词: Capsule endoscopy ; composite diagnosis ; pH sensor ; miniature sensor
摘要: This paper presents a novel capsule endoscope with the synchronous acquisition of the image and pH in the gastrointestinal (GI) tract. Due to the advantages in size and response time, antimony and Ag/AgCl electrodes were used as the working and reference electrodes of the sensor respectively. Three prototypes were designed and fabricated. The first two sensors adopted the separated electrodes with different size, while the last sensor adopted the integrated ones, which was the smallest with the length of 5mm and diameter of 6.7mm. The linearity, accuracy, response time and temperature drift of three sensors were measured to assess their performance. The experimental results showed that when the temperature was fixed, the correlation coefficients were above 0.99, the error rates with buffer solution were below 3% and the response time from the neuter to strong acid was below 5 seconds. Besides, the error rate caused by the temperature drift could be reduced to the range of 1% with the compensation. Due to the advantage in size and performance, the last sensor could be integrated into the capsule endoscope. © 2014 IEEE.
语种: 英语
产权排序: 1
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/16119
Appears in Collections:机器人学研究室_会议论文

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