Voltage Detection Circuit for Multi-Supply Protection
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Solution Overview
Problem
Circuit blocks in systems with varying voltage supply levels can experience errors when the supplied voltage is lower than expected, leading to incorrect operations or system failures due to undetected abnormal voltage levels.
Innovation Solution
A circuit with multiple blocks and voltage detectors that detect voltage levels and generate signals when they fall outside predetermined operating ranges, triggering protection operations such as suspension or shutdown to prevent errors, with optional sub-control logic for handling abnormal voltages within narrower ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple voltage detectors are added to monitor different voltage supplies, then system reliability is improved, but device complexity increases
Solution Approach 1:
The system is divided into multiple independent voltage detection modules, each responsible for monitoring a specific voltage supply (first voltage supply for first block, second voltage supply for second block). Each module contains a voltage detector and associated protection logic, allowing independent monitoring and protection of different circuit blocks with different voltage requirements.
Solution Approach 2:
A control block is introduced as an intermediary that receives detecting signals from multiple voltage detectors and coordinates the protection operations. The control block integrates information from different voltage detectors and manages the protection responses, reducing direct complexity between detectors and multiple blocks.
2Stability of the object's composition
If voltage detection and protection operations are implemented, then system stability is improved, but loss of time occurs due to protection operations such as suspension or shutdown
Solution Approach 1:
Voltage detectors continuously monitor voltage levels before abnormal conditions cause system failure. Protection operations are triggered proactively when voltage levels approach dangerous thresholds, preventing system errors before they occur rather than responding after failures happen.
Solution Approach 2:
The system implements continuous feedback through voltage detectors that monitor voltage supplies and provide detecting signals to control blocks. When voltage levels are abnormal, feedback triggers protection operations, and when voltage levels return to normal ranges, the system can resume operations, creating a dynamic response that minimizes unnecessary shutdown time.
Data Source
AI summary
A circuit for voltage detection and protection comprises a first block, a first voltage detector, a second block and a second voltage detector. The first block receives a first voltage supply. The first voltage detector detects the first voltage supply and generates a first detecting signal when detecting the first voltage supply level is out of the first operating voltage range. The second block receives a second voltage supply. The second voltage detector detects the second voltage supply and generates a second detecting signal when detecting the second voltage supply level is out of the second operating voltage range. The first block performs a protection operation on the circuit when monitoring at least one of the first and second detecting signals.