# US 2025/0085136 A1 · Method and device for estimating revolutions of a bearing on an object > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0085136 A1 - Document ID: US20250085136A1 - Status: Published application - Kind: A1 - Application number: 18/826,438 - Filed: 2024-09-06 - Published: 2025-03-13 - Earliest claimed: 2023-09-13 - Applicants: Aktiebolaget SKF - Inventors: Xiaoyuan MA; Hongwei WU; Xing YI; Bingliang LOU; Liang ZHANG - Web page: https://patentgrep.com/patent/US20250085136A1 ## CPC - G01C 22/00: Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers - G01C 22/02: by conversion into electric waveforms and subsequent integration, e.g. using tachometer generator {(G01C22/002, G01C22/004, G01C22/006 take precedence)} - G01P 13/04: Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) ## Abstract A method and associated device for estimating revolutions of a bearing on an object is disclosed. The method includes receiving a plurality of measurement data from a plurality of sensors. Each of the plurality of measurement data has a corresponding time stamp. The method includes determining a total travelled distance of the object based on the plurality of measurement data and determining a travelled distance offset of the bearing. The travelled distance offset of the bearing is a distance that the object has travelled when the bearing is installed on the object. The method includes determining the revolutions of the bearing based on the determined total travelled distance of the object and the determined travelled distance offset of the bearing. ## Claims ### Claim 1 A method for estimating revolutions of a bearing on an object, the method comprising: receiving a plurality of measurement data from a plurality of sensors, wherein each of the plurality of measurement data has a corresponding time stamp; determining a total travelled distance of the object based on the plurality of measurement data; determining a travelled distance offset of the bearing, wherein the travelled distance offset of the bearing is a distance that the object has travelled when the bearing is installed on the object; and determining the revolutions of the bearing based on the determined total travelled distance of the object and the determined travelled distance offset of the bearing. ### Claim 2 (depends on 1) The method according to claim 1, wherein each of the plurality of sensors is an energy-constrained sensor, and wherein the plurality of measurement data is measured by the plurality of sensors waking up sequentially according to a preset order and a preset time interval for measuring the measurement data. ### Claim 3 (depends on 1) The method according to claim 1, wherein each of the plurality of sensors is an energy-constrained sensor, wherein the plurality of measurement data is measured by at least one of the plurality of sensors waking up at a wake-up time for a second measurement, and wherein the second measurement is another measurement different from a measurement for the measurement data. ### Claim 4 (depends on 1) The method according to claim 1, wherein each of the plurality of measurement data comprises location information of the object, the location information being used for indicating a location of the object when the measurement data is measured, and wherein the determining a total travelled distance of the object based on the plurality of measurement data comprises: determining a first incremental travelled distance of the object based on the location information of the object and the corresponding time stamp; and adding the first incremental travelled distance with a previously travelled distance of the object to determine the total travelled distance. ### Claim 5 (depends on 4) The method according to claim 4, wherein each of the plurality of sensors comprises a positioning module, and wherein the location information of the object is acquired via the positioning module. ### Claim 6 (depends on 1) The method according to claim 1, wherein each of the plurality of measurement data comprises running status information of the object, the running status information being used for indicating a running status of the object when the measurement data is measured, and wherein the determining a total travelled distance of the object based on the plurality of measurement data comprises: determining a running time of the object based on the running status information of the object and the corresponding time stamp; determining a second incremental travelled distance of the object based on the running time and a running speed corresponding to the running time; and adding the second incremental travelled distance with a previously travelled distance of the object to determine the total travelled distance. ### Claim 7 (depends on 6) The method according to claim 6, wherein each of the plurality of sensors comprises a speed acquisition module, and wherein the running status information of the object is acquired via the speed acquisition module. ### Claim 8 (depends on 6) The method according to claim 6, wherein the running status of the object comprises one or more of the following: a fast-running status, a slow-running status and a stopping status. ### Claim 9 (depends on 1) The method according to claim 1, wherein the determining the revolutions of the bearing based on the determined total travelled distance of the object and the determined travelled distance offset of the bearing comprises: subtracting the travelled distance offset from the total travelled distance to obtain a first travelled distance of the bearing; and dividing the first travelled distance by a second travelled distance associated with the bearing to obtain the revolutions, wherein the second travelled distance is a distance travelled by the object when the bearing rotates a turn. ### Claim 10 A device for estimating revolutions of a bearing on an object, the device comprising: a transceiver configured to: receive a plurality of measurement data from a plurality of sensors, wherein each of the plurality of measurement data has a corresponding time stamp; and a processor coupled to the transceiver and configured to: determine a total travelled distance of the object based on the plurality of measurement data; determine a travelled distance offset of the bearing, wherein the travelled distance offset of the bearing is a distance that the object has travelled when the bearing is installed on the object; and determine the revolutions of the bearing based on the determined total travelled distance of the object and the determined travelled distance offset of the bearing.