Abstract: A method for querying a measurement value, wherein the measurement value is converted into a modulation signal that influences the reflective properties of a sensor antenna. A signal is emitted via a query device, wherein the signal is returned in an altered fashion by the sensor antenna and then received again by the query device. The measurement value is determined from the altered signal received. According to at least one embodiment of the invention, a plurality of measurement values are detected by sensors and the query device is moved past a plurality of sensor antennas in a vehicle or by a person. Thus, a plurality of sensors detect measurement values on a railroad line, for example. The vehicle is, for example, a rail vehicle traveling on the track of the railroad line.

Abstract: A method is disclosed for querying a measurement value, wherein the measurement value is converted into a modulation signal that influences the reflective properties of a sensor antenna. A signal is emitted via a query device, wherein the signal is returned in an altered fashion by the sensor antenna and then received again by the query device. The measurement value is determined from the altered signal received. According to at least one embodiment of the invention, a plurality of measurement values are detected by sensors and the query device is moved past a plurality of sensor antennas in a vehicle or by a person. Thus, a plurality of sensors detect measurement values on a railroad line, for example. The vehicle is, for example, a rail vehicle traveling on the track of the railroad line.