Tyre Pressure Sensor Wheel Position Allocation

The patent replaces mechanical cabling with radio-frequency wireless communication to transmit wheel rotation data from sensors to the central unit. This eliminates the need for physical cable connections between moving wheels and the stationary control unit, thereby reducing mechanical complexity and interference susceptibility while maintaining data transfer reliability through error correction protocols and redundant transmission paths.

The patent introduces a radio-frequency transmission intermediary that mediates data transfer between the wheel sensors and central unit. This intermediary uses electromagnetic waves as the transmission medium, replacing direct cable connections and enabling wireless communication that is less susceptible to mechanical interference and easier to implement in rotating wheel environments.

The patent employs parameter changes by using low-frequency radio signals (LF) for wheel detection and identification, and high-frequency radio signals (HF) for air pressure data transmission. This frequency separation allows the system to operate multiple communication functions simultaneously with minimal interference, as different frequency bands experience different levels of environmental interference and can be optimized independently.

The patent segments the radio-frequency communication system into two distinct frequency channels: LF (low-frequency) for wheel identification and rotation rate detection, and HF (high-frequency) for air pressure monitoring data transmission. This segmentation allows each frequency band to be optimized for its specific function and reduces mutual interference between different communication tasks.

The patent implements preliminary action by performing wheel position allocation and identification at the beginning of each monitoring cycle or when changes are detected. The central unit compares current wheel rotation characteristics with stored reference data to re-establish position mappings, ensuring accurate allocation is maintained without requiring continuous complex tracking mechanisms.

The patent uses feedback mechanisms where the central unit continuously monitors wheel rotation rates and compares them with expected values based on allocated positions. When discrepancies are detected, the system triggers a re-allocation process to correct position assignments, thereby maintaining measurement precision through active feedback control rather than passive assumption of fixed allocations.