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Method for detecting the failure of a frequency sensor, and circuit for implementing said method
US8997546B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997546-B2 |
| Application number | US-201013513479-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 25, 2010 |
| Priority date | Dec 2, 2009 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
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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 (S 1 , S 2 ) comprising at least one first alternation (A 1 ) and at least one second alternation (A 2 ), 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.
First claim
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What is claimed is: 1. A method of detecting a fault of a frequency sensor that is associated with a rotary member, the method comprising performing the following steps while the rotary member is stationary: injecting pulses into two terminals of the sensor in the form of inverted alternating signals (S 1 , S 2 ) each comprising at least one first alternation (A 1 ) and at least one second alternation (A 2 ), the first alternation being of amplitude greater than the amplitude of t…
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- G01P21/02Primary
Physics · mapped topic
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- What does patent US8997546B2 cover?
- 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 (S 1 , S 2 ) comprising at least one first alternation (A 1 ) and at least one second alternation (A 2 ), the first alternation being of…
- Who is the assignee on this patent?
- Geneste Nicolas, Esteve Gwénaël, Sagem Defense Securite
- What technology area does this patent fall under?
- Primary CPC classification G01P21/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).