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    • 1. 发明授权
    • Wireless safety chain for elevator system
    • 电梯系统无线安全链
    • US06467585B1
    • 2002-10-22
    • US09899400
    • 2001-07-05
    • Michael GozzoRobert G. MorganAlberto Vecchiotti
    • Michael GozzoRobert G. MorganAlberto Vecchiotti
    • B66B502
    • B66B13/22
    • A wireless safety chain for an elevator system includes a base transceiver connected to a system controller. A plurality of safety chain components each includes a physical sensor such as a switch, and a wireless transceiver. The physical sensor monitors the component status. The wireless transceiver communicates among the other safety chain components and the system controller. The wireless safety chain preferably employs a token scheme, where a token is sent from the base transceiver to one component, which in turn sends the token to another component, and so on, until the token returns to the base transceiver. Failure of the token to return to the base transceiver in a predetermined amount of time signals that the elevator system is unsafe.
    • 电梯系统的无线安全链包括连接到系统控制器的基站收发器。 多个安全链组件各自包括诸如开关的物理传感器和无线收发器。 物理传感器监控组件状态。 无线收发器在其他安全链组件和系统控制器之间进行通信。 无线安全链优选地采用令牌方案,其中令牌从基本收发器发送到一个组件,该组件又将令牌发送到另一个组件,等等,直到令牌返回到基本收发器。 令牌以预定的时间量返回基地收发信机的故障表示电梯系统不安全。