Hierarchical Temperature Detection Circuit for Multi-Block Systems
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Solution Overview
Problem
Existing circuit devices with multiple blocks lack comprehensive temperature abnormality detection and control, relying solely on individual temperature sensors, which limits optimized control and power management across the device.
Innovation Solution
A circuit device with multiple blocks, each equipped with temperature sensors, performs first feedback control locally and second feedback control via a control circuit, allowing for hierarchical temperature abnormality detection and management, enabling safe and high-performance operation by stopping or reducing power consumption when temperature thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If individual temperature sensors are provided in each circuit block for simple control, then the control implementation is easy, but the temperature abnormality detection is limited to each block only and cannot achieve comprehensive device-level optimization
Solution Approach 1:
The patent divides the temperature abnormality detection system into two segmented levels: (1) Individual circuit blocks perform first feedback control using their own temperature sensors for local protection, and (2) The control circuit performs second feedback control by collecting temperature data from all blocks to identify abnormal blocks. This segmentation allows each level to operate independently while contributing to comprehensive device-level temperature management.
Solution Approach 2:
The control circuit acts as an intermediary that collects temperature detection values from multiple circuit blocks and performs coordinated feedback control. It mediates between individual block-level sensors and the overall system, enabling comprehensive temperature abnormality detection by comparing temperatures across blocks and identifying abnormal ones, thereby achieving both ease of implementation and reliable detection.
2Reliability
If comprehensive temperature detection and control across all circuit blocks is implemented, then temperature abnormality detection reliability is improved, but the control system complexity increases
Solution Approach 1:
The control system is segmented into two independent feedback control layers: first feedback control implemented by each circuit block individually, and second feedback control implemented by the control circuit. This segmentation reduces overall system complexity by distributing control functions rather than requiring a centralized complex control system.
Solution Approach 2:
The patent implements a nested feedback control structure where the first feedback control (block-level) is nested within the second feedback control (device-level). Each circuit block has its own temperature sensor and feedback control, which is nested within the broader control circuit that monitors all blocks. This nested structure achieves comprehensive detection while maintaining manageable complexity at each level.
3Reliability
If power is reduced or stopped to prevent temperature abnormalities, then device reliability is improved, but power consumption efficiency decreases
Solution Approach 1:
The patent implements dual-level feedback control that continuously monitors temperature and provides real-time control adjustments. The first feedback control in each block and the second feedback control in the control circuit work together to detect temperature abnormalities early and respond appropriately, preventing catastrophic failures while avoiding unnecessary power reduction.
Solution Approach 2:
The control system dynamically changes operational parameters based on temperature conditions. When temperature abnormalities are detected, the system changes the power supply state (stopping or reducing power) to affected circuit blocks. This parameter change approach ensures reliability by responding to actual temperature conditions rather than using fixed power management, thereby avoiding unnecessary power consumption.
Data Source
AI summary
A circuit device includes: a plurality of circuit blocks, each circuit block being provided with at least one temperature sensor; and a control circuit controlling the plurality of circuit blocks. Each circuit block performs first feedback control for temperature abnormality detection, based on a temperature detection value of the temperature sensor provided in each circuit block. The control circuit performs second feedback control for temperature abnormality detection to each circuit block of the plurality of circuit blocks, based on the temperature detection value of the temperature sensor.