Printable Tire Pressure Sensor with Wireless Power
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Solution Overview
Problem
Existing tire pressure monitoring systems are often expensive, difficult to install, and maintain, and do not effectively address the importance of monitoring tire pressure to prevent accidents and improve fuel efficiency.
Innovation Solution
A tire pressure monitoring system utilizing printable pressure sensors, temperature sensors, a signal processor, wireless power receiver, and rechargeable batteries formed using printed electronics technology on flexible substrates, which can be easily mounted on a tire rim and wirelessly charged, allowing for continuous monitoring of tire pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tire pressure monitoring systems are used, then tire pressure can be monitored, but the system is expensive and difficult to install and maintain
Solution Approach 1:
The patent replaces traditional mechanical pressure sensing mechanisms with printable pressure sensors that utilize resistive or capacitive changes in response to pressure-induced film deformation. This substitution enables cost-effective manufacturing through printing technologies while maintaining monitoring reliability.
Solution Approach 2:
The patent changes the physical state and properties of sensing materials by using flexible substrates with printable sensor elements whose electrical parameters (resistance, capacitance) change in response to pressure and temperature, enabling flexible and inexpensive sensor deployment.
2Ease of manufacture
If printable pressure sensors are used, then manufacturing cost is reduced, but power supply for continuous monitoring becomes challenging
Solution Approach 1:
The patent implements self-powered operation by integrating energy harvesting components (such as piezoelectric or electromagnetic generators) within the sensor system that convert mechanical energy from tire rotation or pressure fluctuations into electrical energy, eliminating external power requirements while enabling continuous monitoring.
3Ease of operation
If sensors are mounted on flexible substrates, then installation on tire rim is simplified, but sensor durability under extreme conditions is compromised
Solution Approach 1:
The patent employs composite material structures combining flexible substrates with durable encapsulation layers and protective coatings that provide both ease of installation on the tire rim and resistance to extreme temperatures, pressure, and mechanical stress encountered during vehicle operation.
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
The system provides a cost-effective, easy-to-install, and maintainable solution for monitoring tire pressure and temperature, enabling continuous data collection and reducing the risk of accidents while improving fuel efficiency.
Implementation Method 1
The printable pressure sensor may be configured to sense the air pressure of the tire by measuring a resistance or capacitance, according to a transformation of a space between two films due to a pressure of a tire dorsal part.
Implementation Method 2
The printable pressure sensor may be configured to sense the air pressure of the tire by measuring a resistance or capacitance, according to a transformation of a space between two films due to a pressure of a tire dorsal part.
Implementation Method 3
The heat sensing part may be configured to measure the temperature by coating heat sensing resistive particles in order to utilize a phenomenon in which a resistance increases according to the temperature.
Implementation Method 4
The heat sensing part may be configured to measure the temperature using a material having pyroelectricity in order to measure a voltage generated according to the temperature.
Implementation Method 5
a wireless power receiver which is configured to receive energy from a power source and output power
Data Source
AI summary
A tire pressure monitoring system (TPMS) is provided. The TPMS includes: a plurality of sensors which output sensing signals, the plurality of sensors including a printable pressure sensor which senses an air pressure of a tire, and a temperature sensor which senses an air temperature inside the tire; a signal processor which is configured to process the sensing signals output by the plurality of sensors; a wireless power receiver which is configured to receive energy from a power source and output power; and a rechargeable battery which is configured to be charged by the power output by the wireless receiver and supply power to the plurality of sensors to sense the air pressure of the tire and the air temperature inside the tire.