Vehicle Fixing Frame With Wave Absorption for Antenna Testing
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Solution Overview
Problem
The challenge of accurately testing vehicle-mounted antennas is exacerbated by vehicles shifting during rotation due to inertia, leading to inaccurate test results, and conventional fixing devices scatter electromagnetic waves, further compromising the test accuracy.
Innovation Solution
A vehicle auxiliary installation fixing device comprising a frame body with wave-absorbing material, arc-shaped end brackets, and adjustable supporting plates and straps to secure the vehicle, minimizing electromagnetic interference and ensuring stability during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the vehicle is placed directly on the rotating bracket without fixing, then the device complexity is reduced, but the vehicle moves during rotation due to inertia, leading to inaccurate test results
Solution Approach 1:
The fixing device is divided into multiple independent components: frame body, connecting rods, supporting plates, and fixing supports. Each component performs a specific function (supporting, positioning, or fixing), allowing the system to stabilize the vehicle without requiring a monolithic complex structure
Solution Approach 2:
The frame body acts as an intermediary structure between the rotating bracket and the vehicle. It provides a stable platform that indirectly supports the vehicle, distributing forces and preventing direct contact issues while maintaining test accuracy
2Stability of the object's composition
If conventional fixing devices are used to stabilize the vehicle, then the vehicle stability is improved, but the fixing devices scatter electromagnetic waves, compromising test accuracy
Solution Approach 1:
The frame body, which could potentially scatter electromagnetic waves, is covered with wave-absorbing material. This converts the potential harmful effect (scattering) into a beneficial one (absorption), allowing the frame to provide structural stability without interfering with the electromagnetic environment
Solution Approach 2:
The surface properties of the frame body are changed by adding wave-absorbing material, transforming it from a reflective/scattering surface to an absorptive surface. This parameter change (surface impedance) eliminates electromagnetic interference while maintaining mechanical stability
3Measurement precision
If the vehicle is secured with multiple fixing components, then the measurement precision is improved, but the device complexity and ease of operation are reduced
Solution Approach 1:
The connecting rods are designed to be adjustable in length and position, allowing the fixing device to adapt to different vehicle sizes and configurations. This dynamic adjustability simplifies operation for various vehicles while maintaining precise stabilization
Solution Approach 2:
The frame body and supporting plates serve multiple functions: structural support, vehicle positioning, and electromagnetic wave absorption. This multi-functionality reduces the number of separate components needed, simplifying both the device structure and installation operation
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 device stabilizes the vehicle on a rotating bracket, preventing movement and reducing electromagnetic wave scattering, thereby enhancing the accuracy of antenna testing results.
Implementation Method 1
the frame body is lined with wave-absorbing material
Implementation Method 2
the section of the pair of end brackets is in the shape of a water drop... By arranging the end brackets of the frame body in an arc shape, the scattering of electromagnetic waves by the frame body itself can be reduced
Data Source
AI summary
The present disclosure provides a vehicle auxiliary installation fixing device and a fixing method, wherein the device comprises a frame body, the frame body comprises a pair of side brackets and a pair of end brackets, the pair of side brackets are parallel to each other and both extend along a first direction, the pair of end brackets are arranged along a second direction, the end brackets are arc-shaped and connected with the ends of the same ends of the pair of side brackets, and the second direction is perpendicular to the first direction; the frame body is lined with wave-absorbing material; two groups of fixing components arranged in a first direction. The device can prevent the position of the vehicle under test from moving when the rotating bracket rotates, and avoid the problem of inaccurate test result caused by the scattering of electromagnetic waves by the device itself.