VEHICULAR REFLECTIVE OPTICAL SENSOR

摘要

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.

主权项

1. A vehicular reflective optical sensor comprising:
a control unit configured
to emit detection light at prescribed intervals from a light-emitting unit on an exterior panel of a vehicle towards a detection region set outside the vehicle,to test for a threshold-exceeded state in which an amount of light in a light reflection received from the detection region by a light-receiving unit exceeds a prescribed detection threshold, andto output a detection-confirmation signal if it is detected that a detection target enters the detection region, wherein the control unit uses, as the detection threshold, a sum of a predetermined fixed value and an adjustment value including a summary statistic, and the adjustment value is calculated, based on amounts of light in an appropriate number of light reflections preceding the light reflection on which the comparison is being performed, at the time of reception of the light reflection on which the comparison is being performed.