Single-Wire Sensor Bus Wireless Power Data Transmission
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Solution Overview
Problem
Conventional automotive sensor networks are heavy, costly, and prone to dust and moisture ingress due to wired connections, which complicates vehicle manufacturing and increases weight and material costs.
Innovation Solution
A single-wire network system that uses a dual-mode antenna for both power and data transmission, enabling wireless communication and power supply to sealed sensor modules, eliminating the need for physical connectors and reducing weight and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections with connectors are used for sensor networks, then power and data transmission are reliable, but weight and material costs increase
Solution Approach 1:
The patent replaces mechanical wired connections with electromagnetic field-based wireless power and data transmission. The sensor module communicates and receives power wirelessly through electromagnetic coupling, eliminating the need for physical connectors and wiring harnesses, thus reducing weight while maintaining transmission reliability
Solution Approach 2:
The antenna structure serves multiple functions simultaneously: it acts as both a power transmission antenna and a data communication antenna. By integrating both power and data functions into a single wireless interface, the system eliminates separate connectors for each function, reducing overall weight and complexity while maintaining reliable transmission
2Reliability
If wired connections with connectors are used for sensor networks, then power and data transmission are stable, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent eliminates mechanical connectors by substituting them with wireless electromagnetic field coupling. The sensor module includes a wireless power interface and wireless data interface that communicate through electromagnetic fields, removing the complexity of physical connector assembly and reducing manufacturing steps
Solution Approach 2:
The patent combines power transmission and data communication functions into a unified wireless interface. The antenna system handles both power and data simultaneously or sequentially, eliminating the need for separate connector assemblies and reducing device complexity
3Reliability
If wired connections with connectors are used for sensor networks, then power supply is continuous, but dust and moisture can enter at physical interfaces
Solution Approach 1:
The patent replaces physical connector interfaces with wireless electromagnetic field coupling. Since there are no physical openings or gaps at the sensor module interface, dust and moisture cannot enter through the connection point, while power and data transmission continue uninterrupted through the air interface
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium for power and data transmission. The field acts as a non-contact bridge between the external system and the sealed sensor module, allowing energy and information transfer without creating physical openings that would compromise the seal
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
The solution provides a lightweight, cost-effective, and secure sensor network that maintains continuous power and data communication to sensors, enhancing reliability and reducing interference with other vehicle systems.
Implementation Method 1
a power transmitter electrically coupled to the single-wire antenna, and configured to produce a power signal on the single-wire antenna
Implementation Method 2
a communications interface electrically coupled to the single-wire antenna, and configured to send and receive data signals via the single-wire power antenna
Data Source
AI summary
A electronics control unit is in contemporaneous wireless power communication and wireless data communication with a network of sealed, sensors over a shared bidirectional power antenna. Sensors and sensor networks described below enable the development of networks that are secure and robust, and yet are lighter-weight and lower-cost than, for example, conventional automotive sensor networks.