Abstract: A wireless, parasitically powered data processing unit 1 is fastened to a current carrying conductor 3 without additional tools, by means of a flexible ferromagnetic belt 11 that is clamped by its housing around the conductor and forms a transformer core to concentrate magnetic flux 5 produced by the conductor and provide operational power to a sensor interface 18, a data processing device 16, and a wireless transceiver 22, without the need for batteries. Sensor signals 33 received from local sensors are processed by the data processing device and information derived from the sensor signals is wirelessly transmitted to remote receivers. The sensor signals may represent measurements of the physical condition of the current carrying conductor or another electrical device, for such conditions as temperature, humidity, vibration, or noise.

Abstract: A wireless, parasitically powered data processing unit 1 is fastened to a current carrying conductor 3 without additional tools, by means of a flexible ferromagnetic belt 11 that is clamped by its housing around the conductor and forms a transformer core to concentrate magnetic flux 5 produced by the conductor and provide operational power to a sensor interface 18, a data processing device 16, and a wireless transceiver 22, without the need for batteries. Sensor signals 33 received from local sensors are processed by the data processing device and information derived from the sensor signals is wirelessly transmitted to remote receivers. The sensor signals may represent measurements of the physical condition of the current carrying conductor or another electrical device, for such conditions as temperature, humidity, vibration, or noise.