Voltage Level Detector Dynamic Threshold Adjustment
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Solution Overview
Problem
Conventional voltage level detection mechanisms require a large number of comparators to achieve accurate detection, leading to an enlarged circuit area, as they need to set multiple threshold levels to detect input signal voltage levels effectively.
Innovation Solution
A voltage level detector system that includes a comparator and a threshold level changer, which adjusts threshold levels based on the voltage level detection signals, allowing a single comparator to detect multiple threshold levels by increasing or decreasing threshold levels accordingly, thereby reducing the circuit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple comparators are used to detect multiple threshold levels, then voltage level detection accuracy is improved, but circuit area is enlarged
Solution Approach 1:
The patent implements dynamic threshold level adjustment by using a threshold level changer that modifies the threshold level based on the detection signal from the single comparator. This allows one comparator to effectively monitor multiple threshold levels sequentially, achieving high detection accuracy without requiring multiple comparators simultaneously, thus resolving the contradiction between measurement precision and circuit area
Solution Approach 2:
The patent changes the threshold level parameter dynamically during operation. The threshold level changer adjusts the threshold level in response to the comparator's output signal, enabling a single comparator to detect multiple voltage levels by sequentially comparing against different threshold values, thereby maintaining high detection accuracy while minimizing circuit area
2Measurement precision
If more threshold levels are set to improve detection accuracy, then voltage level detection precision is improved, but the number of comparators must be increased
Solution Approach 1:
The single comparator is designed to perform multiple functions by sequentially comparing the input signal against different threshold levels. The threshold level changer enables the comparator to serve as a multi-level detector by dynamically adjusting its reference level, making one component perform the work of what would traditionally require multiple comparators, thus reducing device complexity while maintaining detection accuracy
Solution Approach 2:
The system uses dynamic threshold level adjustment to enable a single comparator to detect multiple voltage levels. The threshold level changer modifies the comparator's reference level based on previous detection results, allowing the same comparator to effectively monitor numerous threshold levels over time, thereby achieving high detection accuracy without increasing the number of comparators
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 accurate voltage level detection with a reduced circuit area by dynamically adjusting threshold levels, allowing for efficient detection of input signal voltage levels without the need for multiple comparators.
Implementation Method 1
The comparator compares a voltage level of an increasing or decreasing input signal with a threshold level, and generates and outputs a voltage level detection signal indicating that the input signal has reached the threshold level
Data Source
AI summary
A voltage level detector is provided. The voltage level detector includes a comparator and a threshold level changer. The comparator compares a voltage level of an increasing or decreasing input signal with a threshold level, and generates and outputs a voltage level detection signal indicating that the input signal has reached the threshold level. The threshold level changer changes the threshold level of the comparator based on the voltage level detection signal by increasing the threshold level when the input signal is monotonically increasing and decreasing the threshold level when the input signal is monotonically decreasing.