Tire Monitoring Sensor with Adaptive Transmission Timing
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Solution Overview
Problem
Conventional tire monitoring sensors consume battery power quickly due to high sampling rates and short data transmission periods, necessitating a solution to reduce power consumption while maintaining effective data transmission.
Innovation Solution
A tire monitoring sensor device that measures pressure, temperature, and acceleration data, and adjusts the data transmission period based on acceleration data to estimate tire rotation speed and road surface conditions, thereby optimizing data transmission and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high sampling rate and short data transmission period are used for precise measurement, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the data transmission period variable rather than fixed. The transmission period is dynamically adjusted based on detected events (such as tire pressure anomalies, temperature changes, or vehicle motion states). When events occur, the transmission period shortens to provide precise real-time data; when no events occur, the transmission period extends to reduce power consumption. This dynamic adaptation resolves the contradiction between maintaining measurement precision and reducing energy usage.
Solution Approach 2:
The patent changes the parameter of transmission period from a constant value to a variable value that adapts to different operating conditions. By monitoring sensor data and detecting significant changes in tire parameters or vehicle state, the system adjusts the transmission period parameter accordingly. This parameter change enables the system to maintain high measurement precision when needed while minimizing power consumption during normal operation.
2Reliability
If short data transmission period is used for real-time monitoring, then reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the transmission period based on the detected state of the tire and vehicle. During normal operation, the transmission period is extended to reduce power consumption. When anomalies are detected (such as pressure loss, temperature abnormalities, or impact events), the system automatically shortens the transmission period to provide reliable real-time monitoring data. This dynamic behavior maintains reliability when needed while optimizing energy efficiency during normal conditions.
Solution Approach 2:
The system performs preliminary detection and analysis of sensor data before triggering data transmission. By continuously monitoring tire parameters and vehicle state in the background, the system can predict when transmission is necessary and prepare accordingly. This preliminary action allows the system to maintain reliability by detecting issues early while avoiding unnecessary transmissions that would increase power consumption.
3Loss of information
If frequent data transmission is performed for accurate monitoring, then loss of information is reduced, but power consumption increases
Solution Approach 1:
The patent changes the transmission frequency parameter based on the significance of the data being monitored. During normal operation, transmissions occur less frequently, reducing power consumption. When significant changes are detected in tire pressure, temperature, or vehicle motion, the system increases transmission frequency to ensure no critical information is lost. This adaptive parameter adjustment balances information completeness with energy efficiency.
Solution Approach 2:
The system applies partial action by transmitting data selectively rather than continuously. Instead of maintaining constant high-frequency transmission that would guarantee no information loss but consume excessive power, the system transmits data at lower frequencies during normal operation and increases transmission only when necessary to capture critical events. This partial action approach accepts minimal information loss during normal conditions in exchange for significant power savings.
Data Source
AI summary
The present disclosure provides a sensor device for monitoring a tire including a sensor that is mounted inside a tire and measuring a pressure and temperature inside the tire and an acceleration according to tire rotation, a memory that stores pressure data, temperature data, and acceleration data measured by the sensor, a processor that varies a transmission period of at least one of the pressure data, the temperature data, and the acceleration data based on the acceleration data, and a transmitter that transmits at least one of the pressure data, the temperature data, and the acceleration data according to the transmission period.