Alternating current coupled open circuit detection for low level direct current analog interfaces
US10564209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Apr 27, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments herein relate to a system and method for detecting an open circuit in a sensor measurement system. The system including a sensor having a direct current (DC) output, operably connected to a wiring harness and configured to transmit a sensor signal, and a controller, the controller operably connected to the wiring harness. The controller is configured execute a method including receiving a sensor signal from the sensor, AC coupling an AC signal with the sensor signal to form a coupled signal, measuring the coupled signal, determining if an open circuit is present based on the coupled signal and characterizing the sensor as failed if the open circuit is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.