Elevator safety system having multiple buses

摘要

An elevator safety system including a controller, and a hoistway safety node arranged at a pit portion of an elevator hoistway. The hoistway node is operatively connected to one of a pit safety device and a lower hoistway device arranged at the elevator pit. A first bus links the hoistway node and the controller. The first bus passes communication signals directly from the hoistway node to the controller. A car node is arranged in an elevator car. The car node is operatively connected to a car safety device arranged at the elevator car. A second bus links the car node and the controller. The second bus passes communication signals directly from the car node to the controller.

主权项

1. An elevator safety system comprising:
a controller located at a single location; a hoistway safety node arranged at a pit portion of an elevator hoistway, the hoistway node being operatively connected to one of a pit safety device and a lower hoistway device arranged at the elevator pit; a first bus linking the hoistway node and the controller, the first bus passing communication signals from the hoistway node to the controller; a car node arranged in an elevator car, the car node being operatively connected to a car safety device arranged at the elevator car; and a second bus linking the car node and the controller, the second bus passing communication signals from the car node to the controller.