Method for correcting an emission frequency as a function of temperature
The method addresses frequency drift in wireless sensors by using a software-based lookup table to adjust emission frequency, enhancing communication reliability and reducing energy consumption in tire-mounted sensors.
FR3169034A1Pending Publication Date: 2026-05-29MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
- Filing Date
- 2024-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
Existing wireless sensors in vehicles face challenges with frequency drift due to temperature changes, leading to inefficient communication between transmitters and receivers, particularly in tire-mounted sensors, which are energy-intensive and unreliable.
Method used
A method for correcting emission frequency using a lookup table to adjust the emission setpoint based on temperature measurements, eliminating the need for a TCXO circuit and reducing power consumption by implementing the correction in software.
Benefits of technology
Improves communication performance and reduces energy expenditure by compensating for frequency drift without additional hardware, allowing for efficient unidirectional communication over a wide temperature range.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
This method for correcting the transmission frequency of an electronic device comprising a temperature sensor, a transmitter, and a microprocessor adapted to transmit a transmission command to the transmitter, includes the following steps: - Measurement (step E1) of the transmitter's temperature by the temperature sensor; - Determination (step E2) of a correction factor by searching a lookup table between different transmitter temperatures and suitable correction factors to compensate for frequency drift of the transmitter as a function of its temperature, the lookup table being stored in the electronic device; - Adjustment (step E3) by the microprocessor of the transmission command based on the determined correction factor; and - Emission (step E4) by the transmitter of an electromagnetic wave according to the adjusted transmission command. Figure for the abbreviation: Fig. 2
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