V2X T-Box Circuit for Shared RF and Relay Control Signals
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Solution Overview
Problem
The T-Box in existing vehicle-to-everything (V2X) systems faces challenges in transmitting control signals to relays, limiting the relay's dynamic adjustment capability and necessitating separate software development for different vehicle models, leading to increased complexity and costs.
Innovation Solution
A T-Box design that synchronously transmits radio frequency and control signals through a single cable using a circuit structure, allowing the relay to dynamically adjust parameters such as gain, reducing system complexity and cost by integrating a (¼+N/2) λ transmission line and radio frequency isolation circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay is introduced to alleviate signal attenuation, then radio frequency signal transmission capability is improved, but the T-Box cannot send control signals to the relay, resulting in loss of dynamic adjustment capability
Solution Approach 1:
The patent divides the signal transmission path into two independent branches: a first branch for radio frequency signals and a second branch for control signals. This segmentation allows each branch to be optimized for its specific function while both converge at the relay, enabling the relay to receive both signal types without interference.
Solution Approach 2:
The patent introduces isolation circuits as intermediaries between the control signal end and the relay, and between the radio frequency transmission circuit and the combination point. These isolation circuits act as mediators that allow selective signal transmission while blocking unwanted signals, enabling control signals to reach the relay without being blocked by radio frequency transmission paths.
2Adaptability or versatility
If separate control signal transmission paths are added, then dynamic adjustment capability is improved, but system complexity increases
Solution Approach 1:
The patent merges the control signal transmission and radio frequency signal transmission into a unified system architecture where both signals share common components such as the combination point and the cable. This merging approach allows the system to achieve dynamic adjustment capability while minimizing the addition of separate components, thereby controlling overall system complexity.
3Volume of moving object
If control signals are transmitted through the same cable as radio frequency signals, then miniaturization requirement is met, but signal loss may increase
Solution Approach 1:
The patent applies different quality characteristics to different parts of the signal transmission system. The first branch (radio frequency signals) and second branch (control signals) are designed with different local qualities appropriate to their functions, while both share the common cable medium. This allows miniaturization through shared infrastructure while maintaining signal integrity through function-specific optimization.
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 the relay to adapt to different vehicle models with minimal complexity and cost, maintaining low signal loss and meeting miniaturization requirements, while enhancing radio frequency performance.
Implementation Method 1
The first radio frequency transmission circuit is configured to transmit the radio frequency signal
Implementation Method 2
The first radio frequency isolation circuit is configured to transmit the control signal and isolate the radio frequency signal
Data Source
AI summary
This application describes a telematics communication terminal (T-Box), where the T-Box can synchronously send a radio frequency signal and a control signal to a relay through a cable. A first branch in the T-Box includes a vehicle-to-everything (V2X) circuit and a first radio frequency transmission circuit, and the first radio frequency transmission circuit is coupled between the V2X circuit and a first combination point. A second branch includes a first control signal end and a first radio frequency isolation circuit, the first radio frequency isolation circuit is coupled between the first control signal end and the first combination point, and the first control signal end outputs the control signal.