LIN Bus Remote Control System Wiring Complexity
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Solution Overview
Problem
Existing vehicle control systems face inefficiencies due to the use of expensive RF cables and connectors, which introduce noise in signal transmission, and require additional cables and switches for multiple antennas, complicating wiring harnesses and reducing system reliability.
Innovation Solution
The local interconnect network (LIN) BUS remote control system employs a network of RF modules with LIN transceivers, PCB antennas, and amplifiers, eliminating the need for specialized cables and connectors by using LIN communications, thereby reducing noise and enhancing signal range and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RF cables and connectors are used to connect antennas to control modules, then signal transmission is achieved, but the cables are expensive and add noise to the signal
Solution Approach 1:
The patent replaces the mechanical RF cable and connector system with a LIN bus communication system. Instead of using physical RF cables to transmit signals from antennas to control modules, the invention uses integrated RF modules that communicate via LIN bus, eliminating the need for specialized RF cable assemblies and their connectors.
Solution Approach 2:
The patent combines the RF receiver, amplifier, and antenna into a single integrated RF module. This merging of components eliminates the need for separate RF cables to connect these elements, reducing wiring complexity while maintaining signal integrity through direct internal connections within the integrated module.
2Adaptability or versatility
If multiple antennas are used, then coverage is improved, but additional RF cables and switches are required
Solution Approach 1:
The patent implements a universal LIN bus communication infrastructure that can support multiple RF modules and antenna configurations without requiring additional specialized wiring. The LIN bus provides a standardized communication pathway that works regardless of the number or type of antennas deployed, allowing the system to scale from one to multiple antennas without increasing wiring complexity.
3Ease of operation
If antennas are located away from control modules, then placement flexibility is improved, but cable length increases and adds noise
Solution Approach 1:
The patent segments the control system into distributed RF modules that can be independently placed throughout the vehicle. Each RF module is a self-contained unit with its own antenna, amplifier, and LIN transceiver, allowing flexible placement without requiring long interconnecting cables. The segmentation enables each module to be optimally positioned for its specific function while maintaining signal quality through short internal connections.
Data Source
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Figure 3A~3C
AI summary
A local interconnect network BUS remote control system, including a printed circuit board antenna for receiving wireless communications signals and transmitting them to at least one radio frequency module, the printed circuit board antenna including a digital layer; a power layer; a ground layer; a radio frequency layer; at least one radio frequency module mounted on the vehicle, the at least one frequency module in communication with the printed circuit board antenna for demodulating the wireless communication signals into local interconnect network signals; a local interconnect network BUS in communication with the at least one frequency module for receiving the local interconnect network signals; and a local interconnect network controller in communication with the local interconnect network BUS for receiving the local interconnect network signals.