Bluetooth Tire Pressure Detection for Double-Rim Inner Wheels
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Solution Overview
Problem
Conventional tire pressure detection methods, especially those using wireless technology, are inefficient and prone to interference for vehicles with multiple wheels, requiring manual activation and potential removal of outer tires for accurate readings, especially in heavy-duty vehicles like trucks and trailers.
Innovation Solution
A tire pressure detection device utilizing Bluetooth communication with a chip, Bluetooth receiving circuit, antenna, LF trigger coil, power switch, and monitor, which sends LF signals to activate inner tire pressure detectors, allowing for precise pressure readings without removing outer tires or bending, suitable for vehicles with double rims.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Sub-1G wireless technology is used for tire pressure detection, then wireless communication is achieved, but signal interference occurs and adjacent tire emitters may be wrongly activated
Solution Approach 1:
The patent changes the communication parameter from Sub-1G frequency (433MHz/315MHz) to Bluetooth frequency (2.4GHz), which operates on a different frequency band that is less susceptible to interference from adjacent tire emitters, thereby resolving the signal interference problem while maintaining wireless operation
2Measurement precision
If conventional wireless tire pressure detectors are used, then tire pressure monitoring is enabled, but outer tires must be removed to check inner tire pressure on vehicles with double rims
Solution Approach 1:
The patent introduces an LF trigger coil as an intermediary device that generates a low-frequency magnetic field to activate the inner tire emitter through the rim structure, enabling signal transmission through the obstacle (rim/outer tire) without requiring physical removal of components
3Reliability
If multiple tires need to be checked using conventional detectors, then comprehensive tire monitoring is achieved, but significant time is required for sequential inspection
Solution Approach 1:
The patent replaces the manual mechanical connection method (physically connecting detector to each valve) with automated wireless Bluetooth communication, allowing rapid sequential scanning of multiple tires without manual intervention for each tire, thereby reducing inspection time while maintaining comprehensive coverage
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
Enables efficient and accurate tire pressure monitoring for heavy-duty vehicles by eliminating interference and the need for manual tire removal, providing a user-friendly and safe method for checking inner tire pressures through double rims.
Implementation Method 1
The chip sends an LF signal via the LF trigger coil to activate a Bluetooth tire pressure detector at the inner rim
Implementation Method 2
A pressure signal of an inner tire is sent to the chip via the Bluetooth antenna and the Bluetooth receiving circuit
Data Source
AI summary
A tire pressure detection device includes a chip, a Bluetooth receiving circuit, a Bluetooth antenna, a battery, an LF trigger coil, a power switch, an LF trigger switch and a monitor respectively connected to a case. The Bluetooth receiving circuit is electrically connected to the chip and the Bluetooth antenna. The LF trigger coil, the power switch, the LF trigger switch and the monitor are respectively connected to the chip. A user holds and inserts the tire pressure detection through a double rims. The chip sends an LF signal via the LF trigger coil to activate a Bluetooth tire pressure detector at the inner rim to detect tire pressure. A pressure signal of an inner tire is sent to the chip via the Bluetooth antenna and the Bluetooth receiving circuit. The chip displays the tire pressure of the inner tire on the monitor to be checked by the user.