Tire Monitoring Transmitter Trigger Filtering for Longer Battery Life
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Solution Overview
Problem
Prior tire condition monitoring transmitters misidentify unmodulated waves as trigger signals due to environmental changes, leading to excessive power consumption and reduced battery life, as they respond to unmodulated waves of similar frequency bands, causing repeated response transmissions.
Innovation Solution
Incorporating a memory section to store reception time and number of response transmissions, allowing the transmitter to determine whether an unmodulated wave should be regarded as a trigger signal based on these metrics, and a traveling detecting section to differentiate between vehicle states, thereby reducing unnecessary response transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the trigger receiving section receives unmodulated waves with received signal strength indication greater than or equal to a predetermined threshold, then the transmitter can respond to legitimate trigger signals, but it misidentifies environmental unmodulated waves as trigger signals causing repeated response transmissions
Solution Approach 1:
The transmitter performs preliminary actions by storing reception time and response transmission count before the battery is exhausted. This preliminary data recording enables later analysis of whether excessive power consumption was caused by misidentification of unmodulated waves, without requiring real-time intervention during normal operation.
Solution Approach 2:
The system implements feedback by analyzing the stored reception time and response transmission count data to determine if unmodulated waves are being misidentified as trigger signals. This feedback mechanism allows the system to diagnose power consumption issues and adjust trigger signal reception parameters accordingly, resolving the contradiction between reliable trigger reception and energy conservation.
2Reliability
If the transmitter performs response transmission for every unmodulated wave received, then it ensures no legitimate trigger signal is missed, but it causes excessive power consumption and shortens battery life
Solution Approach 1:
The transmitter records reception time and response transmission count in advance before battery exhaustion occurs. This preliminary data collection enables post-event analysis to determine whether excessive response transmissions were caused by misidentified unmodulated waves, allowing optimization of trigger reception sensitivity to extend battery life while maintaining reliability.
Solution Approach 2:
By analyzing the accumulated reception time and response count data, the system receives feedback on its trigger signal reception behavior. This feedback enables adjustment of the received signal strength indication threshold or other parameters to reduce unnecessary responses to unmodulated waves, thereby extending battery life while preserving reliable response to legitimate triggers.
3Adaptability or versatility
If the transmitter operates in environments with unmodulated waves of similar frequency bands, then it maintains compatibility with various wireless environments, but it increases the likelihood of misidentifying environmental waves as trigger signals
Solution Approach 1:
The transmitter performs preliminary recording of reception time and response transmission count in diverse environmental conditions before battery exhaustion. This data serves as a baseline for analyzing whether environmental unmodulated waves are causing misidentification, enabling the system to maintain environmental compatibility while improving trigger identification accuracy through parameter adjustment.
Solution Approach 2:
The analysis of stored reception and response data provides feedback on the transmitter's performance in specific environmental conditions. This feedback enables dynamic adjustment of trigger signal parameters such as received signal strength indication thresholds or frequency filtering, allowing the system to maintain adaptability to various environments while improving the reliability of trigger signal identification by distinguishing legitimate triggers from environmental noise.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables the transmitter to accurately identify unmodulated waves and reduce power consumption by minimizing misidentification, thus extending battery life and providing diagnostic data for analyzing battery influence.
Implementation Method 1
the trigger receiving section receives, as trigger signals, unmodulated waves having a received signal strength indication greater than or equal to a predetermined received signal strength indication
Data Source
AI summary
A transmitter is configured to be attached to each of wheel assemblies provided in a vehicle and execute a process in accordance with a command included in a trigger signal transmitted from a trigger device. The transmitter includes a battery, a condition detecting section, which detects a condition of the transmitter, a trigger receiving section, which receives, as the trigger signal, an unmodulated wave having a received signal strength indication greater than or equal to a predetermined received signal strength indication, a transmitting section, which transmits a signal, a controlling section, which performs response transmission, by which the signal is transmitted to the transmitting section in response to the unmodulated wave, when the trigger receiving section receives the unmodulated wave, and a memory section, which stores at least one of reception time of the unmodulated wave and a number of times of the response transmission.