Lift system remote control includes peripheral controls mounted on each floor with inductive link to controller circuit

摘要

The communication network (1) and peripherals (31 - 33) are linked, for the supply of power, by induction loops (11-13). These are included in a communication network, which is also used to read the status of the peripherals, used for controlling a lift operation The system for remotely reading the state of circuits comprises a communication network (1) and a number of peripherals (31 - 33) each of which adopts an instantaneous state (STAT1 to STAT3). A controller (2) periodically scans the peripherals to read the instantaneous state from them. The communication network (1) electromagnetically couples the peripherals to the controller, such that the peripheral are supplied with energy via the communication network. Induction loops (11-13) are included in the communication network circuit and these co-operate with similar induction loops (401-403) which are connected to the peripheral circuits. The peripherals do not have any other electrical connection or any individual power source.