Extendable Vehicle Antenna Mast for Obstruction-Free Communication
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Solution Overview
Problem
Metal body panels and cargo on vehicles often obstruct or interfere with wireless communication signals, leading to delayed message receipt, missed data packets, and degraded signal quality, which can affect the control and safety of vehicle systems.
Innovation Solution
A communication assembly with an extendable antenna mast that automatically adjusts its height to clear obstructions, allowing for unobstructed communication pathways by extending beyond local obstructions such as metal vehicle walls and cargo, and retracting to reduce damage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is kept at a fixed low position within the housing, then the device complexity is reduced and the risk of damage is lowered, but the communication quality is degraded due to obstruction by metal body panels and cargo
Solution Approach 1:
The antenna system transitions from a fixed position to a dynamic, adjustable position via an extendable mast that can raise and lower the antenna based on communication needs. The mast is mechanically coupled to the housing and can be controlled to extend beyond obstructions when signal quality degrades, thereby resolving the contradiction between maintaining simple fixed positioning and achieving reliable communication through adaptive positioning.
2Reliability
If the antenna is extended beyond the housing to clear obstructions, then the communication pathway is improved, but the risk of damage to the antenna increases
Solution Approach 1:
The antenna mast is designed as a dynamic, controllable extension that can be raised only when communication reliability requires it and lowered when not needed or when damage risk is high. This on-demand extension minimizes exposure to harmful factors while maintaining communication reliability when necessary.
Solution Approach 2:
The extendable mast acts as an intermediary mechanical structure that allows the antenna to achieve extended positions for clear communication pathways while providing controlled deployment and retraction capabilities. The mast serves as a protective intermediary that can be managed to reduce damage risk during extended operations.
3Loss of information
If a fixed antenna position is used, then the device complexity is minimized, but delayed message receipt and missed data packets occur due to signal obstruction
Solution Approach 1:
The system employs a dynamic mast positioning mechanism that adjusts the antenna height in response to communication conditions. When signal obstruction causes delayed message receipt or missed data packets, the control system activates the mast extension to elevate the antenna above obstructions, ensuring complete message delivery while maintaining relatively simple fixed positioning during normal operation.
Data Source
AI summary
A communication assembly includes a housing, a communication device, an extendable mast, and a control circuit. The housing is configured to be mounted on a vehicle. The communication device includes an antenna and is disposed at least partially within the housing. The extendable mast is mechanically coupled to the housing and supports the antenna. The control circuit is operably coupled to the mast and is configured to generate a signal to raise the mast from a first position of a distal end of the mast to a second position of the distal end in response to determining occurrence of a designated raise event. The antenna extends a greater distance from the housing in the second position of the mast than in the first position.