公开(公告)号：US5517176A

公开(公告)日：1996-05-14

申请号：US384787

申请日：1995-02-06

申请人： Gary E. Lavelle ,  George Frolov ,  George A. Baehr

发明人： Gary E. Lavelle ,  George Frolov ,  George A. Baehr

IPC分类号： E05B45/06 ,  E05B65/10 ,  E05C19/16 ,  G08B21/00

CPC分类号： E05B65/1046 ,  E05B65/108 ,  E05B45/06 ,  E05C19/166 ,  Y10T292/0908 ,  Y10T70/5159

摘要： An exit bar has an elongated body for mounting on an exit door. The exit bar incorporates a pair of independent sensors. An infrared beam is generated along the front of the bar. An infrared detector produces a first signal when the beam is interrupted. The first signal results in release of a lock securing the door. If the beam is interrupted for longer than a pre-set time limit, a first alarm sounds. A capacitance sensor produces a second signal when the sensor detects changes of capacitance in the bar as a result of contact or near contact with foreign objects. The second signal also results in release of the lock securing the door. If the capacitance sensor detects a capacitance change for longer than a pre-set time limit, a second alarm sounds.

摘要翻译： 出口杆具有用于安装在出口门上的细长主体。 出口条包含一对独立的传感器。 沿着杆的前部产生红外线。 当光束中断时，红外探测器产生第一个信号。 第一个信号导致锁定门的释放。 如果光束中断长于预设的时间限制，则会发出第一个警报。 当传感器检测到由于接触或与外界接近接触而导致的棒中电容的变化时，电容传感器产生第二信号。 第二信号还导致锁定门的释放。 如果电容传感器检测到电容变化超过预设的时间限制，则会发出第二个警报。