US 12,276,568 B2
Sensing device and bearing component
Ran Guan, Shanghai (CN)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/792,428
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Jan. 13, 2020, PCT No. PCT/CN2020/071715
§ 371(c)(1), (2) Date Jul. 13, 2022,
PCT Pub. No. WO2021/142569, PCT Pub. Date Jul. 22, 2021.
Prior Publication US 2023/0063769 A1, Mar. 2, 2023
Int. Cl. G01M 13/04 (2019.01); G01L 1/22 (2006.01); G06K 19/07 (2006.01)
CPC G01M 13/04 (2013.01) [G01L 1/2281 (2013.01); G06K 19/0723 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sensing device for a bearing, the sensing device comprising:
a sensing body for mounting into the bearing by a press fit, the sensing body is provided with:
a sensing measurement module comprising a pressure sensor configured for measuring a load of the bearing and a temperature sensor configured for measuring a temperature of the sensing device, wherein the sensing measurement module is configured to correct a measured load is using the measured temperature;
a wireless communication module configured for wirelessly transmitting bearing information from the sensing measurement module; and
a wireless power supply module configured for supplying power for the sensing measurement module and the wireless communication module;
wherein the sensing body comprises a pin-shaped base and a printed circuit board, the base is mountable into the bearing by a press fit;
wherein the wireless communication module comprises an RFID chip arranged on the printed circuit board and an antenna arranged on the base, and the RFID chip and the antenna are configured for conducting wireless communication with communication counterpart equipment arranged outside the bearing;
wherein the pressure sensor comprises at least two strain gauges the at least two strain gauges are arranged in a region of the base for realizing the press fit, one of the at least two strain gauges is arranged on an axial end face of the base, and an other of the at least two strain gauges is arranged on a peripheral surface of the base at least partially extending in an axial direction;
wherein a measurement circuit and a measurement signal processing circuit for the strain gauges are arranged on the printed circuit board;
wherein the antenna is arranged on an axial end face of the base, the axial end face being opposite to an axial end face on which the strain gauge is arranged.