# US 12,007,284 B2 · Method and system for determining data characterizing at least one change in the temperature of a component of a motor vehicle during a time interval > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,284 B2 - Document ID: US12007284B2 - Status: Granted - Kind: B2 - Application number: 18/256,845 - Filed: 2021-12-02 - Published: 2024-01-25 - Granted: 2024-06-11 - Earliest claimed: 2021-01-12 - Assignees: Psa Automobiles SA - Applicants: Psa Automobiles SA - Inventors: Ze Cellier; Papa Medoune Ndiaye - Web page: https://patentgrep.com/patent/US12007284B2 ## CPC - B60R 16/0234: {related to maintenance or repairing of vehicles} - G01K 13/00: Thermometers specially adapted for specific purposes - B60R 16/0231: {Circuits relating to the driving or the functioning of the vehicle (monitoring tyres B60C23/00; indicating overspeed B60K31/00; for dash boards B60K37/00, B60Q3/10; for indicating emergencies B60Q1/52; brake control systems B60T; registering or indicating the working of vehicles G07C5/00; measuring distance G01C, e.g. combinations of speed and distance G01C23/00; engine indicators G01L; measuring speed or acceleration G01P)} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) ## Abstract The invention relates to a method for determining data characterizing at least one change in the temperature of a motor vehicle component during a time interval, using a computer system, and to a system (100) using such a method. ## Claims ### Claim 1 A method for determining, by a computer system, data characterizing at least one change in temperature of a component of a motor vehicle during a time interval, wherein the method comprises the steps of: i) acquiring data characterizing a probability of performing a vehicle usage sequence, the usage sequence comprising multiple segments; ii) acquiring data characterizing a duration or a distance and a stabilized temperature with regard to at least one of the segments of the vehicle usage sequence; iii) acquiring data characterizing a thermal inertia value with regard to the at least one of the segments; iv) acquiring data characterizing a number of usage sequences that can be performed by a driver, including data on a longevity of the motor vehicle; v) acquiring data characterizing a value representing a range of the vehicle; vi) determining data characterizing an estimate of the number of usage sequences performed and a probable longevity as a function of the data on the longevity; vii) determining data characterizing a particular vehicle usage sequence as a function of the data characterizing the probability of performing the vehicle usage sequence and the probable longevity; viii) determining data characterizing a duration for each of the segments of the particular vehicle usage sequence; ix) determining data characterizing a stabilized temperature value for each of the segments of the particular vehicle usage sequence; x) determining data characterizing a one-time value of the temperature of the component during a current segment of the particular vehicle usage sequence as a function of: (1) data characterizing the stabilized temperature during the segment of the particular vehicle usage sequence that precedes the current segment of the particular vehicle usage sequence, (2) data characterizing a difference between (i) the stabilized temperature value during the current segment of the particular usage sequence of the vehicle and (ii) the stabilized temperature value during a segment of the particular vehicle usage sequence that precedes the current segment of the particular vehicle usage sequence, and (3) data characterizing the ratio between (i) the duration elapsed since the start of the current segment of the particular vehicle usage sequence and (ii) a thermal inertia value for the current segment determined from the data characterizing the thermal inertia value with regard to at least one of the segments; and xi) determining the data characterizing at least one change in temperature of the component of the motor vehicle using the data characterizing the one-time value of the temperature of the component during the current segment of the particular vehicle usage sequence. ### Claim 2 (depends on 1) The method according to claim 1, wherein step vi) comprises performing a random selection from the data characterizing the number of usage sequences acquired in step iv). ### Claim 3 (depends on 1) The method according to claim 1, wherein step viii) comprises performing a random selection from the data characterizing the duration of the at least one of the segments of the vehicle usage sequence acquired in step ii). ### Claim 4 (depends on 1) The method according to claim 1, wherein step ix) comprises performing a random selection from the data characterizing the stabilized temperature of the at least one of the segments of the vehicle usage sequence acquired in step ii). ### Claim 5 (depends on 1) The method according to claim 1, wherein the method further comprises determining data characterizing the one-time value of the temperature of the component with regard to a value indicative of a proportion, a duration and/or a usage mode of the vehicle. ### Claim 6 (depends on 1) The method according to claim 1, wherein the method further comprises the steps of: using the data characterizing the temperature change of the component of the motor vehicle to determine, by Fourier transform, data characterizing frequencies and amplitudes corresponding to multiple usage sequences; and determining data characterizing a number of equivalent laboratory cycles according to the data characterizing the frequencies and the amplitudes corresponding to the multiple usage sequences. ### Claim 7 (depends on 1) The method according to claim 1, wherein the data characterizing the probability of performing the vehicle usage sequence are generated so as to form a Markov chain. ### Claim 8 (depends on 1) A system for determining data characterizing at least one change in temperature of a component of a motor vehicle during a time interval, wherein the system comprises at least one information processing unit comprising at least one processor having a data storage medium configured to implement a method according to claim 1. ### Claim 9 (depends on 1) A computer program comprising program code instructions for executing the steps of a method according to claim 1 when said program is executed on a computer. ### Claim 10 (depends on 9) A medium usable in a computer, wherein a program according to claim 9 is recorded therein.