发明名称 |
SYSTEM FOR DETERMINING MOTOR POSITION IN A BIOMEDICAL DEVICE |
摘要 |
<p>A drive member of a peristaltic pumping mechanism includes a disk that rotates with the drive member and has two transparent sectors and two opaque sectors alternating with the transparent sectors. As a stepper motor rotates the drive member to pump fluid, a single optical sensor senses the disk and provides signals indicative of whether a transparent sector or opaque sector is being detected. A processor counts the number of motor steps in the detected transparent or opaque sector and based on the number of counted steps in a type of sector detected or the number of steps counted when a state change to the other type of sector occurs, determines the motor position. In another aspect, the position disk is integrally formed as a single piece with the cams and cam shaft of a pumping mechanism.</p> |
申请公布号 |
EP0781399(B1) |
申请公布日期 |
2013.04.10 |
申请号 |
EP19950931802 |
申请日期 |
1995.09.11 |
申请人 |
CAREFUSION 303, INC. |
发明人 |
HOLDAWAY, CHARLES, R.;WARNER, ERIC, A. |
分类号 |
G01B9/08;A61M5/00;A61M5/142;F04B43/12;G01D5/249;G01D5/347 |
主分类号 |
G01B9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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