OPTICAL DISTANCE MEASURING DEVICE

• Main Author: TACHINO YOSHIHIDE
• Format: Patent
• Language: English; Japanese
• Published: 10.09.2020
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To provide an optical distance measuring device which can determine an abnormality in an optical detector after the device is equipped in a vehicle.SOLUTION: An optical distance measuring device 10 includes: an optical detector 30 for outputting an output signal according to the amount of received light; a scanning scanner 50 for switching a state in which an external light is introduced into the optical detector and a dark state in which an external light is not introduced into the optical detector; and an abnormality determination unit 72 for determining the state of degradation of the optical detector by using an output signal output from the optical detector in the dark state and a determination threshold value.SELECTED DRAWING: Figure 3 【課題】車載後も、光検出器の異常判断が可能な光学的測距装置を提供する。【解決手段】光学的測距装置１０は、受光した光量に応じた出力信号を出力する光検出器３０と、前記光検出器に外部の光を入射させる状態と、外部の光を前記光検出器に入射させない暗状態とに切り替える走査型スキャナ５０と、前記暗状態における前記光検出器から出力された出力信号と判定閾値とを用いて前記光検出器の劣化状態を判断する異常判定器７２と、を備える。【選択図】図３