Efficiency monitor for inductive power transmission

摘要

An efficiency monitor for monitoring the efficiency of power transmission by an inductive power outlet (4210). The efficiency monitor includes an input power monitor (4122), for measuring the input power (Pin) delivered to the primary coil (4220), and an output power monitor (4124), for measuring the output power (Pout) received by the secondary coil (4260). The input and output powers (Pin,Pout) are used by a processor (4162) to determine an index of power-loss. A circuit breaker (4280) may be used to disconnect the inductive power outlet (4120) in case of excessive power loss.