Hybrid altimeter for measuring vertical velocity

    公开(公告)号:US10578639B2

    公开(公告)日:2020-03-03

    申请号:US15688188

    申请日:2017-08-28

    Abstract: An electronic speed detection system is provided. The electronic speed detection system includes an accelerometer coupled to a moving object and a hybrid altimeter, which includes a first pressure sensor coupled to the moving object and a second pressure sensor. The electronic speed detection system also includes a controller comprising a memory and a processor. The memory storing computer program instructions executable by the processor to cause the electronic speed detection system to determine a normalized position based on first inputs received from the hybrid altimeter, or determine a corrected velocity position based on a second input received from the accelerometer and the normalized position.

    CONDITION SENSING ARRANGEMENT FOR ELEVATOR SYSTEM BRAKE ASSEMBLY AND METHOD

    公开(公告)号:US20170283216A1

    公开(公告)日:2017-10-05

    申请号:US15088851

    申请日:2016-04-01

    CPC classification number: B66B5/18 B66B5/0031 B66B5/044 B66B5/06

    Abstract: A brake assembly for an elevator system is provided and includes a guide rail configured to guide movement of an elevator car. Also included is a safety brake operatively coupled to the elevator car and having a brake surface configured to frictionally engage the guide rail. Further included is a safety brake actuation mechanism operatively coupled to the safety brake and configured to actuate the safety brake to a braking position. The mechanism includes a first sensing device disposed on a first side of the guide rail to detect a first condition reading of the elevator car relative to the guide rail. The mechanism also includes a second sensing device disposed on a second, opposite side of the guide rail to detect a second condition reading of the elevator car relative to the guide rail, the first and second condition readings collectively analyzed to determine an overall condition reading.

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