Optical torque meter


PURPOSE: To improve the response in torque detection by displacing the illuminated position of a light receiving surface in conformity with the twisted amount of a shaft member, detecting the displaced amount, and detecting the torque of the shaft. CONSTITUTION: The light from a light emitting element 15 which is fixed to a shaft member 13 is cast on a PSD which is also fixed to the member 13. The displaced amount of the illuminated position which is proportional to the torque of the shaft at the light receiving surface is detected with a detecting circuit 19. The torque of the shaft is computed with an operating circuit 26 based on the detected amount of displacement. In this way, the torque can be measured regardless of the stop and rotation of the member 13, the torque can be measured in real time and the response is improved. COPYRIGHT: (C)1992,JPO&Japio




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Cited By (6)

    Publication numberPublication dateAssigneeTitle
    DE-19833359-C1June 08, 2000Mannesmann Vdo AgDrehmomentsensor
    EP-0974823-A2January 26, 2000Mannesmann VDO AktiengesellschaftCapteur de couple
    EP-0974823-A3July 18, 2001Mannesmann VDO AktiengesellschaftCapteur de couple
    JP-2013040775-AFebruary 28, 2013Ono Sokki Co Ltd, 株式会社小野測器Torque measuring instrument
    US-6513394-B1February 04, 2003Siemens Vdo Automotive AgTorque sensor
    WO-2015109716-A1July 30, 2015中国矿业大学Dispositif de détection du couple d'un arbre principal d'une machine d'extraction à différentiel dans le sens axial