摘要 |
A sensor apparatus (2) for a power bus (4) including a current and a temperature includes a housing (6) and one or more sensors (44, 114, 118). Each of the sensors is adapted to sense one of the current or the temperature of the power bus. A radio transceiver circuit (50, 110) is adapted to transmit a first wireless signal (130) and to receive a second wireless signal. A processor (88, 122) is adapted to input the sensed current and the sensed temperature from the sensors and to output corresponding signals to the radio transceiver circuit in order to transmit the first wireless signal. A power supply (24) is adapted to employ voltage produced by magnetically coupling the power bus to one or more coils, in order to power the sensors, the radio transceiver circuit and the processor from flux arising from current flowing in the power bus. |