OBJECT DETECTION DEVICE, SENSING DEVICE, MOBILE DEVICE AND OBJECT DETECTION METHOD

• Main Authors: SAKAI KOJI, UEDA TAKESHI, YOSHINO YUTA, USHIO KOHEI, NAKAMURA TADASHI, FUJII TOSHISHIGE
• Format: Patent
• Language: English; Japanese
• Published: 07.03.2019
• 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 object detection device that can suppress erroneous detection.SOLUTION: An object detection device which performs object detection by projecting light from a light source (for example, LD) and receiving the light reflected by the object using a light receiving element (for example, PD) comprises a binarization circuit that binarizes a signal from the light receiving element using a threshold value V, and the object detection device performs an object detection operation for the same direction until a high level signal of the signals binarized by the binarization circuit is output M times, and a value of M is set on the basis of appearance probability of a shot noise in which peak intensity in the light receiving element exceeds the threshold value V.SELECTED DRAWING: Figure 5 【課題】 誤検出を抑制することができる物体検出装置を提供する。【解決手段】 物体検出装置は、光源（例えばＬＤ）からの光を投光し物体で反射された光を受光素子（例えばＰＤ）で受光することで物体検出を行う物体検出装置であって、受光素子からの信号を閾値Ｖｔｈで二値化する二値化回路を備え、該二値化回路で二値化された信号のうちハイレベル信号がＭ回出力されるまで、同一方向について物体検出動作を行い、Ｍの値は、受光素子におけるピーク強度が閾値Ｖｔｈを超えるショットノイズの出現確率に基づいて設定されていることを特徴とする物体検出装置である。【選択図】図５