VEHICULAR REFLECTIVE OPTICAL SENSOR

Title:

VEHICULAR REFLECTIVE OPTICAL SENSOR

Document Type and Number:

WIPO Patent Application WO/2015/045588

Kind Code:

A1

Abstract:

The purpose of this invention is to provide a vehicular reflective optical sensor that has improved control reliability. Said vehicular reflective optical sensor is provided with a control unit (6) that: emits detection light (3) at prescribed intervals from a light-emitting unit (2) on an exterior panel of a vehicle towards a detection region (1) set outside said vehicle; tests for a threshold-exceeded state in which the amount of light in a light reflection (4) received from the detection region (1) by a light-receiving unit (5) exceeds a prescribed detection threshold; and, if it is detected that a detection target has entered the detection region (1), outputs a detection-confirmation signal. The control unit (6) uses, as the aforementioned detection threshold, the sum of a predetermined fixed value and an adjustment value comprising a summary statistic for the amounts of light in an appropriate number of light reflections (4) preceding the light reflection (4) on which the comparison is being performed.

Inventors:

RAI SHUN
ONO TAKASHI
TANAKA KAZUYA
HIRAI WATARU

Application Number:

PCT/JP2014/069300

Publication Date:

April 02, 2015

Filing Date:

July 22, 2014

Export Citation:

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Assignee:

ALPHA CORP (JP)
NISSAN MOTOR (JP)

International Classes:

G01V8/20; B60J5/00; B60J5/04; E05B49/00; G01S17/04; G01S17/88; H03K17/78

Foreign References:

JP2012162908A	2012-08-30
JP2008092218A	2008-04-17
JPH1095274A	1998-04-14
JP2005133529A	2005-05-26
JP2006245685A	2006-09-14

Other References: