US 11,668,751 B2
Sensor device and method for determining an alternating voltage
Michael Schulze, Berlin (DE); and Olaf Vogt, Berlin (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Appl. No. 17/256,301
Filed by SIEMENS MOBILITY GMBH, Munich (DE)
PCT Filed Jun. 4, 2019, PCT No. PCT/EP2019/064433
§ 371(c)(1), (2) Date Dec. 28, 2020,
PCT Pub. No. WO2020/001933, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10 2018 210 568.5 (DE), filed on Jun. 28, 2018.
Prior Publication US 2021/0263102 A1, Aug. 26, 2021
Int. Cl. G01R 31/327 (2006.01); G01R 15/16 (2006.01); G01R 19/10 (2006.01)
CPC G01R 31/327 (2013.01) [G01R 15/16 (2013.01); G01R 19/10 (2013.01)] 16 Claims
OG exemplary drawing
 
15. A method for determining an alternating voltage between a conductor and a reference potential, which comprises the steps of:
capacitively coupling a sensor element to the conductor;
interconnecting a resistor of the sensor element in series with the reference potential;
connecting at least one shielding element to the resistor, the resistor embodied for connecting to the reference potential, the at least one shielding element disposed such that the at least one shielding element and the sensor element are capacitively coupled to one another, and the at least one shielding element located at a distance that is radially further away from the conductor than a distance at which said sensor element is located; and
ascertaining a voltage drop across the resistor in the sensor element.