Sensor device on a feed pipeline carrying high voltage
View Patent ↗In order to be able to operate a sensor device on a feed pipeline carrying high voltage without using batteries or storage batteries, the sensors are connected for supply purposes via an electrical isolating stage to a mains voltage source and for signal purposes to an evaluation circuit.
1. Sensor device on a feed pipeline carrying high voltage, comprising at least one sensor that is disposed on the pipeline and that provides a low-level output signal, and comprising an evaluation circuit to which sensor signal output is applied, characterized in that at least one sensor is operated from a mains-voltage source via an electrical isolating stage and the at least one sensor is connected to the evaluation circuit via an electrical isolating stage or wirelessly.
2. Sensor device according to claim 1 , characterized in that a plurality of sensors is connected to the mains-voltage source and the evaluation circuit via the electrical isolating stages.
3. Sensor device according to claim 2 , characterized in that the at least one sensor each provide a data packet that comprises a sensor output signal and, in that the plurality of sensors is connected to a databus that is connected to one of the electrical isolating stages.
4. Sensor device according to claim 3 , wherein the data packet further comprises a sensor identifier.
5. Sensor device according to claim 2 , characterized in that the electrical isolating stages are disposed in the vicinity of the plurality of sensors.
6. Sensor device according to claim 1 , characterized in that the electrical isolating stages are disposed in the vicinity of the at least one sensor.
7. Sensor device according to claim 1 , characterized in that at least one of the electrical isolating stages comprises a transformer.
8. Sensor device according to claim 1 , characterized in that at least one of the isolating stages comprises an optocoupler unit.