Portable Shielded Compartment for Vehicle Telematics Testing
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Solution Overview
Problem
Current methods for testing vehicle telematics systems are either costly due to the need for shielded rooms or anechoic chambers or fail to provide realistic testing scenarios when the system is isolated from other vehicle electronics.
Innovation Solution
A cost-efficient telematics verification system using an electromagnetically shielded compartment that can be mounted on a vehicle to cover its antennas, allowing for realistic testing of both downlink and uplink communications in various environments, including urban and rural settings, while maintaining electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the vehicle is placed inside a shielded room or an anechoic chamber for testing, then electromagnetic shielding is provided, but the cost increases significantly
Solution Approach 1:
The patent divides the shielding function into two parts: a portable electromagnetically shielded compartment that can be moved to different locations, and the vehicle itself. This segmentation allows testing to be performed in various environments without requiring a fixed, expensive shielded room, thereby reducing costs while maintaining electromagnetic shielding effectiveness.
Solution Approach 2:
The shielded compartment acts as an intermediary between the vehicle and the external environment. It provides the necessary electromagnetic shielding without requiring the entire vehicle or testing facility to be shielded, thus avoiding the high costs associated with building or renting shielded rooms or anechoic chambers.
2Object-affected harmful factors
If the telematics system is removed from the vehicle and placed in a shielded environment for testing, then electromagnetic shielding is provided, but the testing realism decreases
Solution Approach 1:
The shielded compartment is designed to be movable and adaptable to different testing scenarios. It can be positioned around the vehicle in various environments (urban, rural, indoor, outdoor) while maintaining shielding effectiveness. This dynamic approach allows realistic testing conditions to be maintained while providing necessary electromagnetic shielding.
Solution Approach 2:
Instead of shielding the entire vehicle or requiring complete system removal, the patent applies shielding locally to the telematics unit and its immediate antenna environment through the portable compartment. This localized shielding approach maintains the realism of the overall vehicle system operation while protecting the critical testing area from electromagnetic interference.
3Ease of manufacture
If a portable shielded compartment is used instead of a fixed shielded room, then cost decreases and flexibility increases, but the shielding effectiveness may be compromised
Solution Approach 1:
The patent employs advanced electromagnetic shielding materials and design parameters that maximize shielding effectiveness within a compact, portable form factor. By optimizing material properties, compartment geometry, and sealing mechanisms, the portable unit achieves shielding performance comparable to fixed installations while maintaining cost-effectiveness and flexibility.
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 comprehensive, cost-effective testing of vehicle telematics systems under real-world conditions, including live traffic and test facilities, without the need for expensive shielded environments, by providing a controlled electromagnetic environment for both downlink and uplink signal testing.
Implementation Method 1
The compartment is adapted to attenuate external radio signals to provide a controllable radio environment inside the compartment
Implementation Method 2
A set of downlink antennas are adapted to be arranged inside the electromagnetically shielded compartment and are configured to transmit downlink signals inside the electromagnetically shielded compartment which are wirelessly receivable by the vehicle antennas
Implementation Method 3
an uplink antenna is provided and is adapted to be arranged inside the electromagnetically shielded compartment. The uplink antenna is adapted to receive uplink signals transmitted by the antennas of the vehicle
Data Source
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AI summary
The present invention relates to a telematics verification system (100) for testing of a vehicle telematics system, the telematics verification system comprising: an electromagnetically shielded compartment (104) adapted to be arranged to cover antennas (102a-b) of the vehicle when testing the vehicle telematics system using the telematics verification system while operating the vehicle; a set of downlink antennas (106a-d) adapted to be arranged inside the electromagnetically shielded compartment, the set of downlink antennas are configured to wirelessly transmit a downlink signal (108) inside the electromagnetically shielded compartment, wherein the signal indicative of the downlink signal is wirelessly receivable by the antennas of the vehicle, and an uplink antenna (112) adapted to be arranged inside the electromagnetically shielded compartment, the uplink antenna is adapted to wirelessly receive uplink signals transmitted by the antennas of the vehicle.