Touch sensitive processing apparatus, system and method thereof
US-10416829-B1 · Sep 17, 2019 · US
Sensor arrangement for capacitive position detection of a hand on a steering wheel
US11283446B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11283446-B2 |
| Application number | US-201917296918-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 22, 2019 |
| Priority date | Nov 27, 2018 |
| Publication date | Mar 22, 2022 |
| Grant date | Mar 22, 2022 |
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- Title
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Abstract
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A sensor arrangement for capacitive position detection of a hand on a steering wheel. The sensor arrangement includes: a plurality of capacitive sensors disposed along a detection surface, which is an outer surface of the steering wheel, each sensor having at least one sensor electrode; and a measurement device electrically connected to the sensors. In order to increase the reliability of capacitive hand detection on a steering wheel, the measurement device is adapted to perform a sequence of detection operations, and in each detection operation, to activate at least one sensor by applying a detection signal to its at least one sensor electrode in order to capacitively detect the hand while grounding at least one other sensor by connecting at least one of its sensor electrodes to ground, and to activate different sensors in consecutive detection operations.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sensor arrangement for capacitive position detection of a hand on a steering wheel, comprising: a plurality of capacitive sensors disposed along a detection surface, which is an outer surface of the steering wheel, each sensor comprising at least one sensor electrode; and a measurement device electrically connected to the sensors, wherein the measurement device is adapted to perform a sequence of detection operations, and in each detection operation, to activate at least one sensor by applying a detection signal to its at least one sensor electrode in order to capacitively detect the hand while grounding at least one other sensor by connecting at least one of its sensor electrodes to ground, and to activate different sensors in consecutive detection operations. 2. A sensor arrangement according to claim 1 , wherein the sensors are offset with respect to each other along the detection surface. 3. A sensor arrangement according to claim 1 , wherein at least some of the sensors are spaced from each other along the detection surface, so that each sensor corresponds to a sensor area on the detection surface. 4. A sensor arrangement according to claim 1 , wherein each sensor comprises a single sensor electrode. 5. A sensor arrangement according to claim 1 , wherein the measurement device is adapted to ground at the end of each detection operation at least one sensor that was activated during this detection operation and to activate a different sensor for the next detection operation. 6. A sensor arrangement according to claim 1 , wherein the measurement device is adapted to activate a single sensor at a time. 7. A sensor arrangement according to claim 1 , wherein the measurement device is adapted to activate a plurality of sensors at a time. 8. A sensor arrangement according to claim 1 , wherein the measurement device is adapted to ground every sensor that is not activated.
Assignees
Inventors
Classifications
Rims, e.g. with heating means; Rim covers (B62D1/11 takes precedence) · CPC title
- H03K17/962Primary
Capacitive touch switches · CPC title
- B62D1/046Primary
Adaptations on rotatable parts of the steering wheel for accommodation of switches · CPC title
by varying separation · CPC title
using a plurality of detectors, e.g. keyboard · CPC title
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- What does patent US11283446B2 cover?
- A sensor arrangement for capacitive position detection of a hand on a steering wheel. The sensor arrangement includes: a plurality of capacitive sensors disposed along a detection surface, which is an outer surface of the steering wheel, each sensor having at least one sensor electrode; and a measurement device electrically connected to the sensors. In order to increase the reliability of capac…
- Who is the assignee on this patent?
- Iee Sa
- What technology area does this patent fall under?
- Primary CPC classification H03K17/962. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 22 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).