Apparatus and method for detecting an error in a measurement of a quantity
US-9506996-B2 · Nov 29, 2016 · US
Impedance detector for oxygen concentration sensor element
US9529019B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9529019-B2 |
| Application number | US-201514608248-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 29, 2015 |
| Priority date | Feb 5, 2014 |
| Publication date | Dec 27, 2016 |
| Grant date | Dec 27, 2016 |
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Abstract
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An impedance detector includes a current application portion, a detection portion, a calculation portion and a changing portion. The current application portion applies an impedance detection current for detecting an impedance of an element of an oxygen sensor to the element. The detection portion detects a difference between a current application prior voltage and a current application subsequent voltage of the element. The calculation portion calculates the impedance of the element based on the difference detected by the detection portion and a value of the impedance detection current applied by the current application portion. The current application portion can change the value of the impedance detection current applied to the element. The changing portion determines to change the value of the impedance detection current according to the difference detected by the detection portion.
First claim
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What is claimed is: 1. An impedance detector for detecting an impedance of an element of an oxygen concentration sensor, the impedance detector comprising: a current application portion applying an impedance detection current for detecting an impedance of the element to the element; a detection portion detecting a difference between a current application prior voltage and a current application subsequent voltage, the current application prior voltage being a voltage between both…
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- What does patent US9529019B2 cover?
- An impedance detector includes a current application portion, a detection portion, a calculation portion and a changing portion. The current application portion applies an impedance detection current for detecting an impedance of an element of an oxygen sensor to the element. The detection portion detects a difference between a current application prior voltage and a current application subsequ…
- Who is the assignee on this patent?
- Denso Corp
- What technology area does this patent fall under?
- Primary CPC classification G01R17/00. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 27 2016 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).