Wheel Sensor Assemblies Powered by Wireless Electromagnetic Transfer
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Solution Overview
Problem
Existing tire pressure monitoring systems in vehicles face frequent battery replacement due to high energy consumption from additional functionalities, limiting the battery lifetime.
Innovation Solution
A wheel sensor system powered by electromagnetic energy transmitted via a vehicle diagnostics system connector, eliminating the need for individual batteries by using electromagnetic energy transmitters to wirelessly power sensor assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional functionalities are added to tire pressure monitoring systems, then measurement precision and monitoring capabilities are improved, but energy consumption increases significantly, reducing battery lifetime
Solution Approach 1:
The patent extracts the battery from the wheel sensor assembly, removing the energy source that limits functionality. The sensor assembly is powered wirelessly through electromagnetic energy transmission from an external transmitter connected to the vehicle's power system, eliminating the need for onboard battery power in the wheel assembly.
Solution Approach 2:
The patent introduces an electromagnetic energy transmitter as an intermediary between the vehicle's power system and the wheel sensor assemblies. This transmitter wirelessly transmits electromagnetic energy to power the sensors, acting as a mediator that enables energy transfer without physical connection or onboard battery storage.
2Quantity of substance
If battery capacity is increased to support additional functionalities, then energy supply is improved, but device complexity and battery replacement frequency are worsened
Solution Approach 1:
The patent removes the battery entirely from the wheel sensor assembly, extracting the energy storage component that causes complexity and maintenance issues. The system transitions from self-contained battery-powered units to externally powered wireless units.
Solution Approach 2:
The electromagnetic energy transmitter serves multiple functions: it transmits power wirelessly to all wheel sensor assemblies, enables additional high-energy functionalities, and eliminates battery replacement requirements. This universal power delivery system replaces the need for individual batteries in each wheel assembly.
3Duration of action of stationary object
If wireless electromagnetic energy transmission is implemented, then battery lifetime is extended to practically unlimited, but device complexity increases due to additional transmitters and converters
Solution Approach 1:
The electromagnetic energy transmitter acts as an intermediary that simplifies the overall system by centralizing power delivery. Rather than managing multiple small batteries in each wheel assembly, a single external transmitter provides power to all sensors wirelessly, reducing distributed complexity.
Solution Approach 2:
The patent replaces the mechanical battery system with an electromagnetic field-based power transmission system. This substitution eliminates physical battery components, connectors, and replacement procedures, replacing them with wireless electromagnetic energy transfer that simplifies long-term system 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
Provides a practically unlimited power supply to wheel sensor assemblies, especially for high-energy-consuming operations, reducing the frequency of battery replacements.
Implementation Method 1
at least one electromagnetic energy transmitter for wirelessly transmitting electromagnetic energy received via the connector to each wheel sensor assembly
Implementation Method 2
a sensor assembly antenna for wirelessly receiving the electromagnetic energy transmitted by the electromagnetic energy transmitter
Implementation Method 3
a converter for converting the electromagnetic energy received by the sensor assembly antenna into an electrical current for supplying one or more components of the sensor assembly
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A wheel sensor system for a vehicle (1) is disclosed. The system (100) comprises a plurality of wheel sensor assemblies (110); a connector electrically connectable to a vehicle diagnostics system (200) to be powered by the vehicle diagnostics system (200); and at least one electromagnetic energy transmitter (122) for wirelessly transmitting electromagnetic energy received via the connector to each wheel sensor assembly (110) of the plurality of wheel sensor assemblies (110). Each wheel sensor assembly (110) of the plurality of wheel sensor assemblies further comprises: one or more sensors (1100, 1200) for measuring one or more properties of a vehicle wheel (400); a sensor assembly antenna (112) for wirelessly receiving the electromagnetic energy transmitted by the electromagnetic energy transmitter (122); and a converter (113) for converting the electromagnetic energy received by the sensor assembly antenna (112) into an electrical current for supplying one or more components of the wheel sensor assembly (110).