Dynamic Radar Channel Deactivation for Thermal Management
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Solution Overview
Problem
Radar MMIC systems face overheating issues that can lead to damage and system failure, with existing countermeasures involving complete shutdown to prevent physical damage, which renders the system unavailable until it cools down, failing to actively manage temperature-related issues.
Innovation Solution
A radar system with a monolithic microwave integrated circuit (MMIC) that includes temperature sensors and a controller to selectively disable and enable radar signal channels based on measured temperature values, allowing for continuous operation while preventing damage by managing temperature effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire radar system is shut down to prevent overheating and physical damage, then the temperature-related damage risk is reduced, but the system functionality and availability are lost until the system cools down
Solution Approach 1:
The patent divides the radar system into multiple independent signal channels (first radar signal channel, second radar signal channel, etc.). Instead of shutting down the entire system when overheating is detected, only the specific channel causing the temperature issue is disabled while other channels continue to operate. This segmentation allows partial system functionality to be maintained during thermal management events.
Solution Approach 2:
The patent applies partial action by disabling only the necessary portion of the system (specific radar signal channels) rather than the entire system. The controller selectively disables individual channels based on temperature conditions while keeping other channels active, thus maintaining partial system functionality and availability during thermal management.
2Productivity
If multiple radar signal channels are operated simultaneously to maintain system functionality, then system availability is improved, but the risk of overheating and physical damage increases
Solution Approach 1:
The patent implements a feedback mechanism where temperature sensors continuously monitor the thermal state of radar signal channels and provide this information to the controller. The controller uses this feedback to dynamically adjust channel operation - disabling channels when temperature thresholds are exceeded and re-enabling them when temperatures decrease. This closed-loop control allows the system to maintain functionality while actively managing thermal risks.
Solution Approach 2:
The patent makes the channel operation dynamic rather than static. The controller continuously adjusts the operational state of radar signal channels based on real-time temperature conditions. Channels can be enabled or disabled dynamically in response to changing thermal conditions, allowing the system to adapt its functionality to current thermal constraints while minimizing downtime.
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 continuous radar system functionality by dynamically managing channel operations based on temperature, preventing overheating and reducing the risk of damage, while maintaining system performance and availability.
Implementation Method 1
at least one sensor configured to measure a physical parameter related to a temperature of the radar MMIC, and to generate sensor data corresponding to measured values of the physical parameter
Data Source
AI summary
A radar system is provided that includes a radar monolithic microwave integrated circuit (MMIC). The radar MMIC includes a plurality of radar signal channels; and at least one sensor configured to measure a physical parameter related to a temperature of the radar MMIC, and to generate sensor data corresponding to measured values of the physical parameter; and a controller configured to receive the sensor data from the at least one sensor, and to determine a channel operation of the plurality of radar signal channels, including selectively disabling at least a first radar signal channel of the plurality of radar signal channels and selectively enabling at least a second radar signal channel of the plurality of radar signal channels based on the measured values.