SMA Valve for Controlling Air Supply to an Air Cell in a Vehicle Seat
    158.
    发明申请
    SMA Valve for Controlling Air Supply to an Air Cell in a Vehicle Seat 审中-公开
    用于控制车辆座椅中的气囊的空气供应的SMA阀

    公开(公告)号:US20160362023A1

    公开(公告)日:2016-12-15

    申请号:US15104112

    申请日:2013-12-13

    Inventor: Frank Dankbaar

    Abstract: The present invention is directed to a SMA valve for controlling air supply to an air cell in a vehicle seat, comprising a control unit arranged to open the valve in predetermined cycles, each cycle having predetermined activation start and stop times, by supplying an electrical activation power to a SMA wire which in turn acts on a valve element to open the valve for each cycle when the SMA wire shortens upon reaching the threshold temperature, and a temperature sensor for sensing the ambient temperature around the SMA wire. According to the invention the control unit is arranged to receive the temperature signal from the temperature sensor and to determine an activation delay time and an deactivation delay time in dependence on the temperature sensed by the temperature sensor, and to correct the activation start time and the activation stop time for the activation delay time and the deactivation delay time, respectively, to provide a corrected activation start time and a corrected activation stop time to be used for the next cycle.

    Abstract translation: 本发明涉及一种用于控制对车辆座椅中的气室的空气供应的SMA阀,包括:控制单元,其被布置成通过提供电激活而以预定的周期打开所述阀,每个循环具有预定的启动开始和停止时间 在SMA线达到阈值温度时缩短时,SMA线又作用于阀元件以打开每个周期的阀门,以及用于感测SMA线周围环境温度的温度传感器。 根据本发明,控制单元被布置成从温度传感器接收温度信号,并根据温度传感器感测到的温度确定激活延迟时间和停用延迟时间,并且校正激活开始时间和 激活延迟时间的激活停止时间和去激活延迟时间,以提供校正的激活开始时间和用于下一周期的校正的激活停止时间。

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