DISTANCE MEASURING DEVICE

• Main Authors: KUBOTA HIROSHI, MATSUMOTO NOBU
• Format: Patent
• Language: English; Japanese
• Published: 31.03.2022
• 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 improve the accuracy of short distance measurement and long distance measurement in a distance measuring device.SOLUTION: A distance measuring device 1 of an embodiment includes a light projecting unit 20, a first light receiving unit PU1, a second light receiving unit PU2, and a control unit. The light projecting unit 20 includes a light source 23 that emits a light signal and a mirror 25 that reflects the light signal. The first light receiving unit PU1 includes a first sensor 33A including a plurality of first pixels that are two-dimensionally arranged. The second light receiving unit PU2 includes a second sensor 33B including a plurality of second pixels that are two-dimensionally arranged. The control unit sets, to the first sensor 33A, a first light receiving area AA in which at least one first pixel of the plurality of first pixels is selectively turned on. The control unit 10 sets, to the second sensor 33B, a second light receiving area AA in which at least one second pixel of the plurality of second pixels is selectively turned on. The control unit 10 determines the position of the first light receiving area AA and the position of the second light receiving area AA according to the state of the mirror 25 when the light signal is emitted.SELECTED DRAWING: Figure 13 【課題】距離計測装置における近距離及び遠距離の計測精度を向上させる。【解決手段】実施形態の距離計測装置１は、投光部２０、第１受光部ＰＵ１、第２受光部ＰＵ２、及び制御部を含む。投光部２０は、光信号を出射する光源２３と、光信号を反射するミラー２５とを含む。第１受光部ＰＵ１は、２次元に配置された複数の第１画素を含む第１センサ３３Ａを含む。第２受光部ＰＵ２は、２次元に配置された複数の第２画素を含む第２センサ３３Ｂを含む。制御部は、複数の第１画素のうち少なくとも１つの第１画素を選択的にオンさせた第１受光領域ＡＡを第１センサ３３Ａに設定する。制御部１０は、複数の第２画素のうち少なくとも１つの第２画素を選択的にオンさせた第２受光領域ＡＡを第２センサ３３Ｂに設定する。制御部１０は、光信号が出射された時のミラー２５の状態に応じて、第１受光領域ＡＡの位置と第２受光領域ＡＡの位置とを決定する。【選択図】図１３