Shared GNSS Antenna Distribution for Multi-Receiver Vehicles
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Solution Overview
Problem
The inefficiency and increased cost associated with multiple devices in a vehicle each having their own GNSS antennas and receivers, leading to a need for a system that can efficiently distribute GNSS signals and reduce the number of antennas required.
Innovation Solution
A GNSS signal sharing system for a vehicle that includes a single high-performance GNSS antenna and a distributor that branches the received GNSS signal to multiple GNSS receivers, allowing multiple devices to share the same GNSS signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each device in the vehicle has its own GNSS antenna and receiver, then each device can independently receive and process GNSS signals, but the number of antennas increases and system cost increases
Solution Approach 1:
The patent merges the GNSS antenna function into a single shared resource that serves multiple devices (emergency call device, navigation device, autonomous driving device). Instead of each device having its own antenna, one antenna is combined to receive signals for all devices, reducing the total number of antennas while maintaining signal reception capability across all systems
Solution Approach 2:
The single GNSS antenna is designed with multi-functionality to serve multiple purposes and multiple devices simultaneously. The antenna system is configured to distribute received GNSS signals to various receivers including emergency call, navigation, and autonomous driving systems, making one antenna perform the work of multiple antennas
2Reliability
If each device has its own GNSS antenna and receiver, then each device can independently process GNSS signals, but the system cost increases
Solution Approach 1:
The patent combines multiple GNSS reception functions into a shared architecture where one antenna and signal distribution system serves multiple devices. This merging reduces the total component count (antennas, cables, connectors) and thereby reduces manufacturing and installation costs while preserving the ability of each device to independently access GNSS signals
Solution Approach 2:
The shared antenna system is designed as a universal platform that can serve multiple different devices and functions. By creating a multi-functional antenna system, the patent eliminates the need for separate antenna installations for each device, reducing overall system cost while maintaining independent signal access for emergency call, navigation, and autonomous driving systems
Data Source
AI summary
A global navigation satellite system (GNSS) signal sharing system for a vehicle includes a GNSS antenna provided in the vehicle. The GNSS antenna is configured to receive a GNSS signal. The GNSS signal sharing system also includes a distributor configured to receive the GNSS signal from the GNSS antenna and to branch the GNSS signal. The GNSS signal sharing system additionally includes a plurality of GNSS receivers configured to receive the GNSS signal branched by the distributor. The GNSS antenna, the distributor, and a first GNSS receiver among the plurality of GNSS receivers, are included in an emergency call device. A second GNSS receiver among the plurality of GNSS receivers, is included in a device configured to use the GNSS signal, wherein the device configured to use the GNSS signal is provided in the vehicle.