Adaptive Thermoelectric Cooling for Vehicle Antenna Arrays
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Solution Overview
Problem
Conventional communication apparatuses face challenges in thermal management due to heat generation from antenna arrays, especially in outdoor deployments, leading to bulky cooling solutions and increased maintenance costs, which affect performance and reliability.
Innovation Solution
The use of thermoelectric devices for adaptive cooling of antenna elements, where each device covers a subset of antenna elements, with control mechanisms based on operational state and environmental factors to maintain temperature within a specified range, optimizing power consumption and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heatsinks and fans are used for cooling antenna arrays, then cooling effectiveness is improved, but device size and weight increase significantly
Solution Approach 1:
The cooling system is segmented into multiple independent thermoelectric coolers, each assigned to specific antenna elements or groups. This allows distributed cooling where each segment handles thermal load locally, reducing the need for large centralized cooling components and thereby reducing overall system weight while maintaining effective temperature control.
Solution Approach 2:
The patent replaces mechanical cooling systems (fans, pumps) with solid-state thermoelectric coolers that use electrical current to generate cooling effect directly at the heat source. This substitution eliminates moving parts and mechanical components, significantly reducing weight while providing precise thermal control.
2Temperature
If conventional heatsinks and fans are used for cooling antenna arrays, then cooling effectiveness is improved, but device complexity and maintenance cost increase
Solution Approach 1:
The cooling system is divided into multiple independent thermoelectric cooler modules, each capable of operating autonomously. This modular segmentation simplifies the overall system architecture by eliminating complex mechanical linkages and control systems required for traditional centralized cooling, while allowing individual modules to be easily replaced or maintained.
Solution Approach 2:
By replacing mechanical cooling components (fans, bearings, belts, pumps) with solid-state thermoelectric devices, the patent eliminates mechanical complexity and associated maintenance requirements. The electrical control system is simpler and more reliable, reducing overall device complexity.
3Use of energy by moving object
If adaptive cooling is applied to different subsets of antenna elements, then power consumption is optimized, but control system complexity increases
Solution Approach 1:
The control system applies different cooling levels to different subsets of antenna elements based on their local thermal conditions and operational states. Each thermoelectric cooler module can be independently controlled according to the specific heat generation of its associated antenna elements, optimizing power consumption by providing cooling only where and when needed.
Solution Approach 2:
The control system dynamically adjusts the cooling power of each thermoelectric module based on real-time operational parameters such as antenna element activation status, signal power levels, and temperature sensors. This dynamic control optimizes energy consumption by matching cooling capacity to actual thermal demands, with control complexity managed through programmable logic.
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
This approach maintains antenna array temperatures within a desired range, enhancing performance and reducing maintenance costs by providing intelligent, efficient cooling that adapts to operational and environmental conditions, thus improving reliability and reducing performance losses.
Implementation Method 1
The communication apparatus includes a first plurality of thermoelectric devices arranged on the first plurality of antenna elements such that each thermoelectric device covers a different subset of the first plurality of antenna elements
Data Source
AI summary
A communication apparatus that includes a first antenna array including a first plurality of antenna elements mounted at a first location on a vehicle, a first plurality of thermoelectric devices arranged on the first plurality of antenna elements such that each thermoelectric device covers a different subset of antenna elements, and a processor coupled to the first antenna array and the first plurality of thermoelectric devices. The processor determines a visibility status of the first antenna array to a network node based on a motion of the vehicle, activates or deactivates the first antenna array based on the visibility status, and controls each of the first plurality of thermoelectric devices based on the activation or deactivation of the first antenna array.