Abstract: The present disclosure provides an optical sensor having constant sensitivity regardless of changes in temperature. The optical sensor may include a light emitting device configured to emit light; a light receiving device configured to receive the light emitted from the light emitting device, and to output current based on an intensity of the light; a temperature sensor coupled with the light emitting device, and having electrical resistance varying with temperature; and a microcontroller including a first channel for supplying first current directly to the light emitting device, a second channel for supplying second current to the light emitting device via the temperature sensor, and a third channel for receiving the current output from the light receiving device.
Type:
Grant
Filed:
July 13, 2018
Date of Patent:
October 13, 2020
Assignees:
Hyundai Motor Company, KIA Motors Corporation, Accendo Motion Research Co., Ltd.
Inventors:
Jong Min Park, Nak Kyoung Kong, Seung Hyeok Chang, Ki Hong Lee, Nam Joon Yoo, Yong Pyo Hong
Abstract: The present disclosure provides an optical sensor having constant sensitivity regardless of changes in temperature. The optical sensor may include a light emitting device configured to emit light; a light receiving device configured to receive the light emitted from the light emitting device, and to output current based on an intensity of the light; a temperature sensor coupled with the light emitting device, and having electrical resistance varying with temperature; and a microcontroller including a first channel for supplying first current directly to the light emitting device, a second channel for supplying second current to the light emitting device via the temperature sensor, and a third channel for receiving the current output from the light receiving device.
Type:
Application
Filed:
July 13, 2018
Publication date:
September 26, 2019
Applicants:
HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, Accendo Motion Research Co., Ltd.
Inventors:
Jong Min PARK, Nak Kyoung KONG, Seung Hyeok CHANG, Ki Hong LEE, Nam Joon YOO, Yong Pyo HONG
Abstract: The present invention relates to a total reflection type rain sensor using a mirror, which is attached to a glass of a vehicle to detect raindrops falling onto the glass of the vehicle and outputs a signal capable of controlling speed and cycle of a wiper of the vehicle according to the amount and falling frequency of raindrops detected.
Type:
Grant
Filed:
May 30, 2014
Date of Patent:
January 15, 2019
Assignees:
ACCENDO MOTION RESEARCH CO., LTD, DREAMTECH CO., LTD
Inventors:
Young-Ho Kim, Jin Sang Lee, Yong Pyo Hong, Nam Joon Yoo