Capacitive sensing and heating system for steering wheels or seats to sense presence of hand of occupant on steering wheel or occupant in seat
US11402238B2 · kind B2 · utility
0Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2021 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2210/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system including an assembly arranged in at least one of a seat and a steering wheel of a vehicle and a measurement circuit. The assembly includes a sensor and a heater arranged adjacent to the sensor. The measurement circuit is configured to output an excitation signal to the measurement circuit and the assembly and measure a resonant frequency of the measurement circuit and the assembly in response to the excitation signal. The measurement circuit is configured to determine a capacitance value based on the resonant frequency and determine whether a body part is in proximity to the sensor based on the capacitance value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.