发明名称 |
Magnetic Proximity Sensor System And Associated Methods Of Sensing A Magnetic Field |
摘要 |
A magnetic proximity sensor is attached to a ferrous object such that the sensor alerts a practitioner if a threshold of magnetic strength has been exceeded by bringing the ferrous object within a certain proximity to the magnet of an MRI scanner. The magnetic proximity sensor includes at least one magnetic field sensor for sensing a magnetic field strength. An alarm in communication with the field sensor alerts a practitioner that a threshold of magnetic strength has been exceeded. A battery powers the field sensor and the alarm. The field sensor may produce an output voltage corresponding to the sensed magnetic field strength, and a potentiometer may provide a reference voltage corresponding to a threshold magnetic field strength. A comparator compares the reference voltage to the output voltage, and triggers an alarm if the output voltage exceeds the reference voltage.
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申请公布号 |
US2009251316(A1) |
申请公布日期 |
2009.10.08 |
申请号 |
US20090417427 |
申请日期 |
2009.04.02 |
申请人 |
MAMOURIAN ALEXANDER;HOLLAND MICHAEL |
发明人 |
MAMOURIAN ALEXANDER;HOLLAND MICHAEL |
分类号 |
G01R33/02;G08B21/00 |
主分类号 |
G01R33/02 |
代理机构 |
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