-
公开(公告)号：US10449989B2
公开(公告)日：2019-10-22
申请号：US14890148
申请日：2014-12-04
Inventor： Tsuyoshi Nishio , Hiroshi Naitou , Baku Sakaguchi , Shinji Fujikawa , Yuta Okazaki
Abstract: A steering wheel heater device including: a steering wheel heater configured of an electrical resistor which produces heat by electrical energy; an inductor; at least one switch; and a sensor circuit, wherein the inductor is connected in series to a first terminal of the steering wheel heater, the at least one switch turns on and off the supply of power to the steering wheel heater, the sensor circuit is electrically connected to the first terminal and determines whether a detected subject is in contact with a steering wheel based on a magnitude of capacitance of the steering wheel heater, and the at least one switch is at least one of a switch connected in series to the first terminal of the steering wheel heater via the inductor and a switch connected in series to a second terminal of the steering wheel heater.
-
Patent Agency Ranking
公开(公告)号：US11242069B2
公开(公告)日：2022-02-08
申请号：US16559659
申请日：2019-09-04
Inventor： Yuta Okazaki , Youichi Kurosawa
Abstract: Grip sensor includes base material, sensor wire formed on base material, and sensor circuit electrically connected to an end of sensor wire. Sensor wire includes first wire portion on a side of sensor end, and a second wire portion on a side of power source end. In a state where base material is attached on a rim, second wire portion is disposed at an outer peripheral surface of the rim that is a site opposing a knee or thigh of a driver operating a steering wheel, and first wire portion is disposed at a front side and a rear side of the rim.
-
公开(公告)号：US10689022B2
公开(公告)日：2020-06-23
申请号：US15571832
申请日：2016-03-16
Inventor： Yuta Okazaki , Shinji Fujikawa , Hiroshi Naitou , Tsuyoshi Nishio
Abstract: A steering wheel grip detection device includes a positive electrode terminal electrically connected to a positive electrode of a power source and a negative electrode terminal electrically connected to a negative electrode of the power source. The steering wheel grip detection device further includes a thermostat, a heater, and an inductance element that are electrically connected with one another in this order in series wiring from the positive electrode terminal to the negative electrode terminal, as well as a capacitor through which a wiring path from the thermostat to the heater is electrically connected with the negative electrode terminal. The steering wheel grip detection device has an electrostatic sensor circuit that is electrically connected with a wiring path from the inductance element to the heater and that detects a grip on a steering wheel by a capacitance value of the heater.
-
公开(公告)号：US10895656B2
公开(公告)日：2021-01-19
申请号：US16480393
申请日：2018-02-01
Inventor： Yuta Okazaki , Hiroshi Naitou , Tsuyoshi Nishio
Abstract: Capacitive sensor includes sensor electrode, sensor circuit that is electrically connected to sensor electrode measures capacitance of sensor electrode, first impedance element, noise detection circuit that is electrically connected to sensor electrode through first impedance element and measures noise, and control circuit that switches between on and off of each of sensor circuit and noise detection circuit. Control circuit causes sensor circuit to measure the capacitance of sensor electrode by turning on sensor circuit and by turning off noise detection circuit and control circuit causes noise detection circuit to measure the noise by turning off sensor circuit and by turning on noise detection circuit.
-
公开(公告)号：US10202137B2
公开(公告)日：2019-02-12
申请号：US15327488
申请日：2015-07-16
Inventor： Yuta Okazaki , Hiroshi Naitou , Shinji Fujikawa , Tsuyoshi Nishio , Nobuharu Katsuki
IPC: B62D1/06
Abstract: A heater device includes: a base member; a heater wire; and a sensor which measures capacitance of the heater wire, wherein the heater wire forms a first wiring pattern and a second wiring pattern connected in series, the first wiring pattern and the second wiring pattern each include N wire blocks, the N wire blocks included in the first wiring pattern and the second wiring pattern are disposed in a manner that arrangement of the N wire blocks included in the first wiring pattern and arrangement of the N wire blocks included in the second wiring pattern are reversed in the circumferential direction of the rim and facing each other in a direction perpendicular to the circumferential direction, and a sum of sensitivity of the sensor to capacitance of a pair of wire blocks facing each other is substantially equal to that of another pair.
-
公开(公告)号：US09979390B2
公开(公告)日：2018-05-22
申请号：US14691180
申请日：2015-04-20
Inventor： Shinji Fujikawa , Nobuharu Katsuki , Tsuyoshi Nishio , Hiroshi Naitou , Yuta Okazaki
CPC classification number: H03K17/9622 , B62D1/06 , G01N27/22 , H03K2217/94026
Abstract: A grip sensor includes: a plurality of capacitive detectors which are disposed in a grip of a steering wheel of a vehicle, and output values which vary according to whether a human body is in contact; and a controller which determines, at a preset timing, a reference value to be subtracted from the values output from the plurality of capacitive detectors, to determine whether the human body is in contact, wherein the controller identifies, from among values output from the plurality of capacitive detectors at the preset timing, one or more values each having an absolute value smaller than a first threshold, and determines, as the reference value, one of the one or more values identified or an average of the one or more values identified.
-
-
-
-
-
Search Results
6
records
(took 0.016 seconds)
