# US 2025/0164601 A1 · Method for identifying inner and outer tire pressure sensors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0164601 A1 - Document ID: US20250164601A1 - Status: Published application - Kind: A1 - Application number: 18/950,193 - Filed: 2024-11-18 - Published: 2025-05-22 - Earliest claimed: 2023-11-21 - Inventors: TUNG-FU HSIEH; HSIAO-CHEN HUANG - Web page: https://patentgrep.com/patent/US20250164601A1 ## CPC - G01S 5/0269: {Inferred or constrained positioning, e.g. employing knowledge of the physical or electromagnetic environment, state of motion or other contextual information to infer or constrain a position} - B60C 23/007: {having multiple wheels arranged side by side} - B60C 23/0416: {allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right} - G01L 17/00: Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies - G01S 5/02: using radio waves (using satellite radio beacon systems for determining position G01S19/00) - G01S 2205/01: specially adapted for specific applications - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) ## Abstract A method for identifying inner and outer tire pressure sensors, which includes the following steps: Signal Reception Step, Signal Strength Summation Step, and Inner and Outer Wheel Identification Step. The vehicle main unit receiving the first inner wheel detection signal strength total value and the first outer wheel detection signal strength total value, and compares their magnitudes. The larger value indicates the inner wheel, while the smaller value indicates the outer wheel. The vehicle main unit identifies inner and outer wheels by having tire pressure sensors read and recognize the signal strength of tire pressure sensors in mirror-image positions. Compared to traditional methods, this approach can more accurately identify tire pressure sensors on inner and outer wheels. ## Claims ### Claim 1 A method for identifying inner and outer tire pressure sensors, comprising the following steps: Signal Reception Step (S1): a first wheel set (1) and a second wheel set (2) being in mirror configuration, the first wheel set (1) including a first inner tire pressure sensor (11) and a first outer tire pressure sensor (12), the second wheel set (2) including a second inner tire pressure sensor (21) and a second outer tire pressure sensor (22), the first inner tire pressure sensor (11) reading and identifying a signal strength of each of the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22), the first outer tire pressure sensor (12) reading and identifying the signal strengths of the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22); Signal Strength Summation Step (S2): the first inner tire pressure sensor (11) summing up the signal strengths read from the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22) to calculate a first inner wheel detection signal strength total value, the first outer tire pressure sensor (12) summing up the signal strengths read from the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22) to calculate a first outer wheel detection signal strength total value, and Inner and Outer Wheel Identification Step (S3): a vehicle main unit (100) receiving the first inner wheel detection signal strength total value and the first outer wheel detection signal strength total value, and comparing the first inner wheel detection signal strength total value and the first outer wheel detection signal strength total value, one with the larger value being identified as the inner wheel, and the other one with the smaller value being identified as the outer wheel. ### Claim 2 (depends on 1) The method as claimed in claim 1, wherein the vehicle main unit (100) has built-in reasonable range values for the first inner wheel detection signal strength total value and the first outer wheel detection signal strength total value, when either the first inner wheel detection signal strength total value or the first outer wheel detection signal strength total value falls outside the reasonable range values, the vehicle main unit (100) re-matches the first inner tire pressure sensor (11), the first outer tire pressure sensor (12), the second inner tire pressure sensor (21), the second outer tire pressure sensor (22), and restarts the process from the Signal Reception Step (S1) until both the first inner wheel detection signal strength total value and the first outer wheel detection signal strength total value fall within the reasonable range values. ### Claim 3 (depends on 1) The method as claimed in claim 1, wherein the vehicle main unit (100) has built-in reasonable range values for the signal strengths of inner tire pressure sensor signals and outer tire pressure sensor signals received respectively by the first outer tire pressure sensor (12) and the first inner tire pressure sensor (11), when any of the aforementioned values falls outside the reasonable range values, the vehicle main unit (100) re-matches the first inner tire pressure sensor (11), the first outer tire pressure sensor (12), the second inner tire pressure sensor (21), and the second outer tire pressure sensor (22), and restarts the process from the Signal Reception Step (S1) until the signal strength values of inner tire pressure sensor signals and outer tire pressure sensor signals received by both the first inner tire pressure sensor (11) and first outer tire pressure sensor (12) fall within the reasonable range values. ### Claim 4 A method for identifying inner and outer tire pressure sensors, comprising the following steps: Signal Reception Step (S10): a first wheel set (1) and a second wheel set (2) being in mirror configuration, the first wheel set (1) including a first inner tire pressure sensor (11) and a first outer tire pressure sensor (12), the second wheel set (2) including a second inner tire pressure sensor (21) and a second outer tire pressure sensor (22), the first inner tire pressure sensor (11) reading and identifying signal strengths of the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22), the first outer tire pressure sensor (12) reading and identifying the signal strengths of the second inner tire pressure sensor (21) and the second outer tire pressure sensor (22), and Inner and Outer Wheel Identification Step (S20): the first inner tire pressure sensor (11) and the first outer tire pressure sensor (12) respectively transmitting an identified signal strength value to the vehicle main unit (100), the vehicle main unit (100) separately comparing the two identified signal strength values, one with the larger value being identified as the inner wheel, and the other one with the smaller value being identified as the outer wheel, the comparison results then being cross-checked to confirm whether a determination of inner and outer wheels is correct.