PCB Thermal Profiling for Abnormal Electronic Device Heat
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Solution Overview
Problem
Industrial electronic devices face failures due to extreme temperatures and poor ventilation, leading to increased maintenance costs and operational risks, as conventional thermal management techniques are costly, inefficient, and lack real-time data reliability.
Innovation Solution
A thermal management system with integrated circuitry and a thermal sensing unit on a multi-layer or single-layer PCB, utilizing multiple thermal sensors and a communication interface to selectively sense and manage thermal data, generating thermal profiles and determining abnormal conditions to initiate preventive actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thermal management techniques using discrete components and heat sinks are employed, then thermal protection is provided, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple thermal management functions (temperature sensing, data processing, threshold comparison, and control signal generation) into a single integrated processor unit. This eliminates the need for separate discrete thermal management components and their associated circuitry, thereby reducing device complexity while maintaining thermal protection reliability.
Solution Approach 2:
The integrated processor is designed to perform multiple functions: it senses temperature through integrated sensors, processes thermal data, compares temperatures against predefined thresholds, and generates control signals for thermal management. This multi-functional approach replaces multiple specialized components with a single universal processor unit.
2Reliability
If redundant control systems with stand-by components are used, then reliability is improved, but system speed decreases due to synchronization requirements
Solution Approach 1:
The system performs preliminary thermal assessments by continuously monitoring temperature and comparing it against predefined thresholds before thermal issues become critical. The processor proactively generates control signals when temperature approaches threshold values, preventing the need for emergency redundant system activation and maintaining operational speed.
3Stability of the object's composition
If cooling fans are eliminated to prevent dust ingress, then device durability is improved, but thermal runaway risk increases
Solution Approach 1:
The integrated processor continuously monitors temperature and uses this feedback to dynamically control thermal management. When temperature approaches critical thresholds, the processor generates control signals to activate cooling mechanisms or reduce power consumption, thereby managing thermal runaway risk without requiring constant mechanical ventilation that would allow dust ingress.
Solution Approach 2:
The system uses its own integrated temperature sensors and processing capabilities to autonomously monitor and manage its thermal state. This self-service approach eliminates the need for external cooling fans, preventing dust ingress while maintaining thermal safety through intelligent control based on real-time temperature feedback.
4Measurement precision
If inbuilt processors with temperature sensors are used, then thermal monitoring is improved, but coverage of all components is insufficient
Solution Approach 1:
The thermal management system divides the device into multiple thermal zones, each monitored by dedicated integrated temperature sensors. The processor receives data from multiple sensors positioned at different locations and components throughout the device, enabling comprehensive coverage of all critical thermal areas rather than relying on a single monitoring point.
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 system provides proactive and cost-efficient thermal management, reducing the risk of device failure by generating accurate thermal profiles and initiating corrective actions, optimizing processing load and building a knowledge base for improved thermal data management.
Implementation Method 1
a thermal sensing unit in the electronic device for selectively sensing the thermal data
Data Source
AI summary
A thermal management device, a thermal management system, a method, and an electronic device are provided. The thermal management system has the thermal management device communicatively coupled with one or more electronic devices including a thermal sensing unit having a plurality of thermal sensors sensing thermal data associated with each of the electronic devices. The thermal management device is configured to obtain the thermal data associated with the electronic device, generate a thermal profile based on the thermal data, and determine an abnormal thermal associated with the electronic device based on the thermal profile and a reference thermal profile of the electronic device. The thermal management device is also configured to initiate a preventive action at the electronic device to address the abnormal thermal condition.