Voltage State Detection Circuit for Floating Node Sensing
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Solution Overview
Problem
Conventional voltage state detectors are limited in their ability to determine a floating state of a voltage node, as they can only detect predetermined fixed potentials, restricting their applications.
Innovation Solution
A voltage state detector is designed with an input terminal, voltage drop circuit, pull-down circuit, load circuit, transistor, pull-up circuit, and logic circuit, which generate state determination signals to differentiate between floating, high, and low voltage states by adjusting detection current and using logic gates to output control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional voltage state detector is used, then the detector structure is simple, but it can only determine a predetermined fixed potential and cannot detect floating states
Solution Approach 1:
The detector is divided into multiple independent detection paths: a first detection path for detecting high voltage states, a second detection path for detecting low voltage states, and a third detection path for detecting floating states. Each path contains dedicated detection circuits that operate independently, allowing the system to detect multiple voltage states simultaneously without interference.
Solution Approach 2:
The detector is designed to perform multiple detection functions through a unified structure. The first, second, and third detection paths work together within a single detector device, enabling it to determine high voltage states, low voltage states, and floating states comprehensively. This multi-functional design eliminates the need for separate detectors for different voltage states.
2Adaptability or versatility
If the detector is designed to detect multiple voltage states including floating states, then the detection capability is improved, but the device complexity increases
Solution Approach 1:
Multiple detection functions are merged into a single integrated detector device. The first detection circuit, second detection circuit, and third detection circuit are combined within one detector, sharing common components such as the input terminal and logic circuit. This merging approach reduces overall system complexity compared to using separate detectors for each voltage state.
Solution Approach 2:
The logic circuit serves as an intermediary that processes signals from the three detection paths and generates the final voltage state determination. It receives first detection signals from the first detection circuit, second detection signals from the second detection circuit, and third detection signals from the third detection circuit, then综合分析 to determine the overall voltage state.
Data Source
AI summary
A voltage state detector includes a voltage drop circuit, a pull-down circuit, a load circuit, a transistor, a pull-up circuit, first and second output terminals, and a logic circuit. The pull-down circuit is coupled to the voltage drop circuit. The transistor has a first terminal coupled to the load circuit, a second terminal coupled to the pull-down circuit, and a control terminal coupled to the voltage drop circuit. The pull-up circuit is coupled to the load circuit and the voltage drop circuit. The first output terminal is coupled to the first terminal of the transistor for outputting a first state determination signal. The second output terminal is coupled to the voltage drop circuit for outputting a second state determination signal. The logic circuit includes a NOR gate for performing an NOR operation on the first state determination signal and the second state determination signal to output a control signal.