CONTROL DEVICE, CONTROL METHOD, AND CONTROL PROGRAM

• Main Authors: MIZUNO FUMIAKI, HOASHI YOSHIAKI, NAKAJIMA MASATO, AKAMATSU SHUNICHI
• Format: Patent
• Language: English; Japanese
• Published: 15.05.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

To provide a control device for ensuring distance measurement accuracy of an optical sensor.SOLUTION: A processor of a control device for controlling an optical sensor that receives reflected light from a target with respect to radiation light emitted by light emission of a laser diode and measures a distance to the target is configured to execute: setting of a first distance measurement area Am1 and a second distance measurement area Am2 in which the target to which the distance is to be measured is closer than the first distance measurement area Am1 as an area in which a distance is measured in a distance measurement execution period; and adjusting a non-oscillation current range of the control current value Cc for controlling the laser diode to a non-oscillating state for the second distance measurement area Am2 so as to be lower than an oscillation current range of the control current value Cc for driving the laser diode to an oscillating state for the first distance measurement area Am1 as adjustment of a control current value Cc for controlling the laser diode in the distance measurement execution period.SELECTED DRAWING: Figure 9 【課題】光学センサの測距精度を確保する制御装置の提供。【解決手段】レーザダイオードの発光により照射した照射光に対する物標からの反射光を受光して、当該物標までの距離を測定する光学センサを、制御する制御装置のプロセッサは、測距実行期間に距離が測定されるエリアとして、第一測距エリアＡｍ１と、第一測距エリアＡｍ１よりも測距対象の物標が近い第二測距エリアＡｍ２とを、設定することと、測距実行期間にレーザダイオードを制御する制御電流値Ｃｃを調整することとして、第一測距エリアＡｍ１に対してレーザダイオードを発振状態に駆動する制御電流値Ｃｃの発振電流範囲よりも、第二測距エリアＡｍ２に対してレーザダイオードを未発振状態に制御する制御電流値Ｃｃの未発振電流範囲を、低く調整することと、を実行するように構成される。【選択図】図９