Wheel Unit Command Activation via Periodic UHF Signaling
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Solution Overview
Problem
Current tire pressure monitoring systems face high energy consumption and communication quality degradation when vehicles are in motion due to bidirectional data exchange requirements between wheel units and remote monitoring/control devices using UHF radio waves.
Innovation Solution
Implementing a method where wheel units store and manage lists of commands, allowing remote devices to activate specific commands through a series of signaling messages without continuous data exchange, using a modified identifier system and periodic signaling to optimize energy use and maintain communication availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bidirectional data exchange is implemented between wheel units and remote monitoring devices using UHF radio waves, then remote control and monitoring capability is improved, but energy consumption increases and communication quality degrades when vehicles are in motion
Solution Approach 1:
The patent implements periodic signaling messages instead of continuous bidirectional data exchange. The remote device sends periodic signaling messages to the wheel unit, and the wheel unit responds with periodic status updates. This periodic action reduces energy consumption by keeping the communication in a low-power state while maintaining the ability to exchange data when needed.
Solution Approach 2:
The patent segments the communication into discrete signaling messages rather than maintaining a continuous connected mode. Each signaling message contains specific commands or status information, allowing the system to transition between disconnected and connected states efficiently. This segmentation enables remote control capability while minimizing the time spent in high-energy connected mode.
2Adaptability or versatility
If bidirectional data exchange is implemented between wheel units and remote monitoring devices, then remote control capability is improved, but communication quality deteriorates when vehicles are in motion
Solution Approach 1:
The periodic signaling message approach allows the system to maintain communication quality by establishing connections only when needed for specific data exchanges. The periodic nature of the communication reduces interference and signal degradation issues that occur with continuous bidirectional exchange, especially when the vehicle is in motion.
Solution Approach 2:
The wheel unit autonomously manages its communication state by responding to periodic signaling messages only when necessary. This self-service approach allows the wheel unit to maintain reliable communication by controlling when it establishes active connections, thereby improving overall communication quality while maintaining remote control capability.
3Loss of information
If continuous bidirectional communication is maintained between wheel units and remote devices, then real-time monitoring is improved, but battery life is reduced
Solution Approach 1:
The system uses periodic signaling messages to maintain real-time monitoring capability without requiring continuous communication. The wheel unit sends status updates at periodic intervals in response to signaling messages, providing sufficient real-time information while keeping the communication radio in low-power states between updates, thereby extending battery life.
Solution Approach 2:
The patent implements partial action by providing real-time monitoring through periodic updates rather than continuous data exchange. This partial monitoring approach is sufficient for most TPMS applications and significantly reduces the energy consumption associated with maintaining continuous bidirectional communication, thus extending battery life while preserving essential monitoring functionality.
Data Source
AI summary
A method for controlling, by a remote monitoring and/or control device, an activation of a command in a wheel unit that has previously stored a group of authorized UHF communication devices and checked whether a device that has sent a response message belongs to the group. If it does, the wheel unit sends a series of command-related signaling messages with each message associated with a single command. When the authorized device receives a message relating to a specific command that the authorized device requests to have activated by the wheel unit, the authorized device sends back to the wheel unit a standard response message interpreted as an activation order for the wheel unit to activate the specific command.