发明名称 |
Encoder using magnet drop out feature for theft detection |
摘要 |
An encoder to be mounted to a shaft extending from a piston meter configured to compute a volume of distributed fluid includes a magnet affixed to the shaft via a floating magnet holder, a magnetic sensor configured to sense the flux density and direction of a magnetic field created by the magnet and to output a signal indicating the flux density and direction of the magnetic field to a printed circuit board, and the printed circuit board configured to output a signal indicating the volume of distributed fluid if the encoder has not been tampered with and configured to output an error signal if the encoder has been tampered with.
|
申请公布号 |
US8441254(B2) |
申请公布日期 |
2013.05.14 |
申请号 |
US20100952496 |
申请日期 |
2010.11.23 |
申请人 |
AMANTE PHILIP A.;CREAK JEFFREY;MEASUREMENT SPECIALTIES, INC. |
发明人 |
AMANTE PHILIP A.;CREAK JEFFREY |
分类号 |
G01B7/30;G01B7/14 |
主分类号 |
G01B7/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|