PROBLEM TO BE SOLVED: To provide an object detection device that can improve detection accuracy of objects.SOLUTION: An object detection device comprises: a microphone array that includes a plurality of non-directional microphones; and a processor that processes first acoustic data acquired with the microphone array. The processor is configured to: sequentially change a directional direction on the basis of the first acoustic data to generate a plurality of pieces of second acoustic data having directionality in an arbitrary direction; analyze a sound pressure level of the second acoustic data and frequency component thereof; and, when a sound pressure level of a specific frequency included in the frequency component of the second acoustic data having the directionality in a first direction of the arbitrary direction is equal to or greater than a first prescribed value, determine that an object exists in the first direction.SELECTED DRAWING: Figure 2
【課題】物体の検出精度を向上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、無指向性の複数のマイクロホンを含むマイクロホンアレイと、マイクロホンアレイにより収音された第1の音響データを処理するプロセッサと、を備える。プロセッサは、第1の音響データに基づいて、指向性の方向を順次変更して、任意の方向に指向性を有する複数の第2の音響データを生成し、第2の音響データの音圧レベル及び周波数成分を解析し、任意の方向のうちの第1の方向に指向性を有する第2の音響データの周波数成分に含まれる特定周波数の音圧レベルが第1の所定値以上である場合、第1の方向に物体が存在すると判定する。【選択図】図2
OBJECT DETECTION DEVICE, OBJECT DETECTION SYSTEM AND OBJECT DETECTION METHOD
物体検出装置、物体検出システム、及び物体検出方法
06.04.2017
Patent
Elektronische Ressource
Japanisch
IPC: | H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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