发明名称 JIDOKAIHEITOBIRANOSEIGYOSOCHI
摘要 In an apparatus for controlling operation of an automatic door with minimum error in a detected door position, a motion sensor is positioned relative to a movable driving member coupled to the door. Pulses having a pulse repetition rate are created in direct proportion to a velocity of movement of the driving member. The pulses are counted and current position of the door determined. Any error arising from a loss or slip in an intermediate transmission mechanism which couples a motor with the final driving member is substantially eliminated. A pair of motion sensing elements as opto-electronic couplers may be provided for sensing a phase relationship between the sensing elements defining a direction of door movement. A pulse interval monitor adapted to generate a signal indicative of a long lapse of time between adjacent pulses from the sensing element may be provided. A sequence control circuit responsive to this generated signal generates a stop command for the motor.
申请公布号 JPH0229151(B2) 申请公布日期 1990.06.28
申请号 JP19810207199 申请日期 1981.12.23
申请人 YOSHIDA KOGYO KK 发明人 YOSHIDA YUKIO;OONO KENZO
分类号 E05F15/10;E05F15/14;H02P23/00 主分类号 E05F15/10
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