Tire-Pressure Identification Using Intelligent Tire with Three-Axis Accelerometer

Area of Science:

• Automotive Engineering
• Sensor Technology
• Vibration Analysis

Background:

• Intelligent tires are crucial for vehicle safety and maneuverability.
• Tire pressure significantly impacts vehicle performance and safety.
• Accurate, real-time tire pressure monitoring is essential.

Purpose of the Study:

• To propose a novel tire-pressure identification scheme using an intelligent tire.
• To leverage 3-axis accelerometers as the primary sensing system for tire pressure detection.
• To enable real-time tire pressure identification during routine driving.

Main Methods:

• Developed an intelligent tire prototype equipped with three 3-axis accelerometers.
• Conducted data acquisition tests under various tire pressures.
• Filtered vibration acceleration data, focusing on the rim's circumferential direction.
• Established a relationship between tire pressure and the rim's characteristic frequency.

Main Results:

• Demonstrated that 3-axis accelerometers can accurately detect tire pressure with minimal electronic components.
• Successfully identified tire pressure in real-time using the developed scheme.
• Verified the scheme's accuracy with actual vehicle data across different tire pressures.

Conclusions:

• The proposed intelligent tire system effectively identifies tire pressure using 3-axis accelerometers.
• The established relationship between rim vibration frequency and tire pressure is reliable.
• The scheme offers a promising solution for accurate, real-time tire pressure monitoring.