V2X T-Box Relay Circuit for Synchronous RF and 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 like gain based on the control signal, adapting to various vehicle models without adding large components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay is used to amplify and forward the signal to alleviate attenuation, then the 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 combines the radio frequency signal transmission function and the control signal transmission function into a single integrated cable system. The cable transmits both the amplified radio frequency signal from the relay and the control signals from the T-Box simultaneously, enabling both signal improvement and dynamic control capability to coexist without requiring separate communication channels.
Solution Approach 2:
The cable is designed to serve multiple functions: it acts as both the transmission medium for radio frequency signals and the control interface for sending commands from the T-Box to the relay. This multi-functional design eliminates the need for separate control wiring while maintaining full control capability over the relay's operation.
2Adaptability or versatility
If separate software development is performed for different vehicle models to achieve adaptation, then the adaptability to different vehicle models is improved, but the system complexity and development costs increase
Solution Approach 1:
The patent implements dynamic adaptability through real-time control signals sent from the T-Box to the relay. Instead of requiring different software configurations for different vehicle models, the system dynamically adjusts relay parameters such as gain based on control signals that carry vehicle model information. This allows a single hardware platform to adapt to multiple vehicle models through software-controlled parameter adjustment rather than separate software developments.
3Reliability
If control signals and radio frequency signals are transmitted through separate channels, then signal isolation is improved, but the system complexity and component quantity increase
Solution Approach 1:
The patent merges the control signal transmission and radio frequency signal transmission into a single cable infrastructure. By carefully managing the signal paths within the integrated cable system, both signal types share the same physical medium without requiring separate cables or complex isolation hardware, thereby reducing overall system complexity while maintaining functional separation.
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
This approach reduces signal loss, maintains radio frequency performance, minimizes system complexity, and lowers costs while enabling the relay to adapt to different vehicle models.
Implementation Method 1
The first radio frequency transmission circuit is configured to transmit the radio frequency signal and isolate the control signal. The first radio frequency isolation circuit is configured to transmit the control signal and isolate the radio frequency signal.
Data Source
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AI summary
Embodiments of this application relate to the field of communication technologies, and provide a T-Box, a relay, a signal transmission system, and a vehicle, so that the T-Box can synchronously send a radio frequency signal and a control signal to the relay through a cable. A first branch in the T-Box includes a 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. A fourth branch in the relay includes a vehicle to everything V2X signal end and a bidirectional switch circuit, the bidirectional switch circuit includes a first path and a second path that are coupled in parallel between the V2X signal end and a third combination point, and the first path includes a first power amplifier. A fifth branch includes a second control signal end coupled to the bidirectional switch circuit, and the second control signal end receives the control signal to control a gain of the first power amplifier.