US 12,117,505 B2
Sensor device with sensor and current converter
Ralf Kienzle, Korntal-Muenchingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/762,135
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Sep. 16, 2020, PCT No. PCT/EP2020/075800
§ 371(c)(1), (2) Date Mar. 21, 2022,
PCT Pub. No. WO2021/052979, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10 2019 214 325.3 (DE), filed on Sep. 20, 2019; and application No. 10 2020 211 526.5 (DE), filed on Sep. 15, 2020.
Prior Publication US 2022/0373617 A1, Nov. 24, 2022
Int. Cl. G01R 33/00 (2006.01); G01R 19/00 (2006.01); G01R 33/07 (2006.01); H02M 1/00 (2007.01)
CPC G01R 33/0017 (2013.01) [G01R 19/0092 (2013.01); G01R 33/0011 (2013.01); G01R 33/072 (2013.01); H02M 1/0009 (2021.05)] 15 Claims
OG exemplary drawing
 
1. A sensor device (200, 200′) comprising:
a sensor (210),
a circuit carrier (220),
conductor sections (230, 231, 233, 234) for supplying current to the sensor (210) and for capturing an output signal (UH) generated by the sensor (210), which conductor sections connect the sensor (210) to the circuit carrier (220), and
a supply and read-out apparatus (225),
wherein respective contact points (235, 236) of a two of the conductor sections (230, 231) on the circuit carrier (220) are electrically connected together by a capacitor (C1), with the result that the two conductor sections (230, 231), the capacitor (C1) and the sensor (210) are constituent parts of an electrical loop (L1),
wherein the two of the conductor sections (230, 231), the capacitor (C1) and the sensor (210) are constituent parts of a common, first electrical loop (L1), and wherein the sensor device further includes a second electrical loop (L2) which is electrically connected to the capacitor (C1) and is designed such that a current flow, which is generated in the second electrical loop (L2) by a magnetic field (B) that permeates the first electrical loop (L1) and the second electrical loop (L2) at the same time, counteracts interference exerted on the output signal from the sensor by the magnetic field (B).