WIRELESS TRANSMISSION DEVICE AND WIRELESS POWER TRANSMISSION SYSTEM

• Main Authors: YONEDA KAZUKI, YAMASHIMA MASAYUKI, SHIOZAKI RYO, SAKITA KOICHI
• Format: Patent
• Language: English; Japanese
• Published: 05.07.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

To provide a wireless transmission device capable of suppressing an influence of power transmission to elements used for a foreign matter detection device, while suppressing an influence of ambient light.SOLUTION: A wireless transmission device has a foreign matter detection device having a transmission coil, a cover covering the transmission coil, and a foreign matter presence/absence determination section determining presence/absence of a foreign matter based on a photographed image captured by an imaging device including a surface of the cover in a photographing range. The foreign matter presence/absence determination section determines the presence/absence of the foreign matter based on a difference between a pattern included in the photographed image and a pattern that is a reference including n kinds of colors where n is an integer equal to or more than 2.SELECTED DRAWING: Figure 1 【課題】環境光の影響を抑制しつつ、異物検出装置に用いられる素子への電力伝送の影響を抑制することができるワイヤレス送電装置を提供する。【解決手段】送電コイルと、前記送電コイルを覆うカバーと、前記カバーの表面を撮像範囲に含む撮像装置が撮像した撮像画像に基づいて異物の有無を判定する異物有無判定部を有する異物検出装置と、を備え、前記異物有無判定部は、前記撮像画像に含まれる模様と、ｎ種類の色を含む基準となる模様である基準模様と、の差分に基づいて、前記異物の有無を判定し、前記ｎは２以上の整数である、ワイヤレス送電装置。【選択図】図１