Invention Grant
- Patent Title: Sensor interfaces, sensor arrangements, and open circuit detection methods for sensor interfaces and arrangements
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Application No.: US15727356Application Date: 2017-10-06
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Publication No.: US10732231B2Publication Date: 2020-08-04
- Inventor: Eric Petersen , Christopher Charles Eberts
- Applicant: Hamilton Sundstrand Corporation
- Applicant Address: US NC Charlotte
- Assignee: Hamilton Sundstrand Corporation
- Current Assignee: Hamilton Sundstrand Corporation
- Current Assignee Address: US NC Charlotte
- Agency: Locke Lord LLP
- Agent Scott D. Wofsy; Judy R. Naamat
- Main IPC: G01R31/02
- IPC: G01R31/02 ; G01R31/50 ; H03K17/0812 ; H03K17/56 ; G05F1/10 ; H03K17/18 ; G01D3/08 ; G01R31/28
Abstract:
A sensor interface includes a sensor circuit, a drive circuit connected to the sensor circuit with active and inactive states, and a back-bias circuit. The back-bias circuit is connected between the drive circuit and the sensor circuit. The back-bias circuit is arranged to allow current to flow from the drive circuit to the sensor circuit when the drive circuit is in the active state. The back-bias circuit is also arranged to limit current flow from the drive circuit to the sensor circuit when the drive circuit is in the inactive state. Sensor arrangements and open circuit detection methods are also described.
Public/Granted literature
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