A capacitance measuring system (20) detecting an occupant of a vehicle. A sensor/heater assembly (40, 42, 54, 64) is arranged in at least one of a seat (51) or a steering wheel (22) of a vehicle and includes a sensor and a heater arranged adjacent to the sensor. A measurement circuit (24, 58) is configured to output an excitation signal to the measurement circuit and the sensor/heater assembly, measure a resonant frequency of the measurement circuit and the sensor/heater assembly in response to the excitation signal; determine at least one capacitance value based on the resonant frequency; anddetermine whether a body part is in proximity to the sensor based on the at least one capacitance value.
一种检测车辆乘员的电容测量系统(20)。传感器/加热器组件(40、42、54、64)被布置在以下各项中的至少一项中:车辆的座椅(51)或方向盘(22),并且传感器/加热器组件包括传感器和加热器,加热器与传感器相邻布置。测量电路(24、58)被配置为将激励信号输出给测量电路和传感器/加热器组件,响应于激励信号来测量测量电路和传感器/加热器组件的谐振频率;基于谐振频率确定至少一个电容值;并且基于至少一个电容值确定身体部位是否靠近传感器。
CAPACITIVE SENSING AND HEATING SYSTEM FOR STEERING WHEELS OR SEATS TO SENSE PRESENCE OF HAND OF OCCUPANT ON STEERING WHEEL OR OCCUPANT IN SEAT
用于感测方向盘上的乘员或座椅中的乘员的手的存在的方向盘或座椅的电容感测和加热系统
2020-10-16
Patent
Elektronische Ressource
Chinesisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B62D MOTOR VEHICLES , Motorfahrzeuge / H03K PULSE TECHNIQUE , Impulstechnik |
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