Invention Grant
US08997546B2 Method for detecting the failure of a frequency sensor, and circuit for implementing said method
有权
用于检测频率传感器故障的方法，以及用于实现所述方法的电路
- Patent Title: Method for detecting the failure of a frequency sensor, and circuit for implementing said method
- Patent Title (中): 用于检测频率传感器故障的方法，以及用于实现所述方法的电路
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Application No.: US13513479Application Date: 2010-11-25
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Publication No.: US08997546B2Publication Date: 2015-04-07
- Inventor: Nicolas Geneste , Gwénaël Esteve
- Applicant: Nicolas Geneste , Gwénaël Esteve
- Applicant Address: FR Paris
- Assignee: Sagem Defense Securite
- Current Assignee: Sagem Defense Securite
- Current Assignee Address: FR Paris
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Priority: FR0905844 20091202
- International Application: PCT/EP2010/007142 WO 20101125
- International Announcement: WO2011/066919 WO 20110609
- Main IPC: G01P21/02
- IPC: G01P21/02
Abstract:
A method of detecting a fault of a frequency sensor having a bias resistor and associated with a rotary member. The following steps are performed while the rotary member is stationary: injecting into the bias resistor of the sensor inverted alternating signals (S1, S2) comprising at least one first alternation (A1) and at least one second alternation (A2), the first alternation being of amplitude greater than the amplitude of the second alternation; and detecting a frequency of an output signal (S″) from the sensor. A measurement circuit implementing the method is also provided.
Public/Granted literature
- US20120240667A1 METHOD FOR DETECTING THE FAILURE OF A FREQUENCY SENSOR, AND CIRCUIT FOR IMPLEMENTING SAID METHOD Public/Granted day:2012-09-27
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