The invention relates to, inter alia, a sensor (1). The sensor comprises a series resonant circuit (30) that has a coil (31), a capacitor (32), and a series resistor (33) which are electrically connected in series; a direct-current source (10) which is current-limited as well as voltage-limited and which outputs a specified maximum current (Imax) as the output current (I) if the output voltage (U) required to output the maximum current (Imax) does not exceed a specified maximum voltage (Umax) and otherwise outputs the maximum voltage (Umax); a converter (20) which is supplied by the direct-current source (10) on the input side and which applies an alternating voltage (Uw) to the series resonant circuit (30) on the output side, the frequency (f) of said alternating voltage being set such that the direct-current source (10) supplies the maximum current (Imax) to the converter (20) at the maximum voltage (Umax) in a detection-free sensor operation; and a monitoring device (50) which generates a detection signal (RDS) if the output voltage (U) of the direct-current source (10) falls below the maximum voltage (Umax) by a specified degree and/or generates a warning signal (WS) if the output current (I) of the direct-current source (10) falls below the maximum current (Imax) by a specified degree.
SENSOR, AND RAILWAY TRACK SYSTEM COMPRISING A SENSOR
2024-12-12
Patent
Electronic Resource
English
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