RC Voltage Divider Redundant Output Circuit Design
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Solution Overview
Problem
Existing RC voltage dividers fail to achieve reliable and accurate redundancy in secondary outputs, leading to significant disturbances when one output fails, with impedance changes causing errors of up to 50% in remaining outputs.
Innovation Solution
The RC voltage divider design includes at least two equivalent output circuits connected in series, with voltage limiters and equivalent impedance to minimize impedance changes, ensuring stable redundant outputs with less than 0.2% disturbance upon failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two or more cables and secondary equipment are connected to the secondary part for redundancy, then redundancy is achieved, but impedance changes occur causing disturbances of 1% to 50% in remaining outputs when one output fails
Solution Approach 1:
The secondary part is divided into multiple independent output circuits (first output circuit and second output circuit), each with its own cable and equipment. This segmentation isolates the impedance changes to individual circuits, preventing them from affecting other outputs, thus maintaining measurement precision while providing redundancy.
Solution Approach 2:
Each output circuit is designed with specific local characteristics (impedance values, cable configurations) optimized for its function. The first and second output circuits have different local qualities that compensate for each other, ensuring that when one circuit fails, the other maintains accurate measurements with minimal disturbance.
2Reliability
If equipment failure occurs in cable, DCB box, amplifier, or converter, then redundancy is tested, but big impedance changes cause disturbances of 1% to 50% in remaining outputs
Solution Approach 1:
The system is designed with beforehand cushioning by creating multiple independent output circuits with equivalent impedance characteristics. When equipment failure occurs, the independent design ensures that impedance changes are contained within the failed circuit's path, and the remaining circuits maintain their predetermined impedance stability, preventing large disturbances.
3Device complexity
If the divider is designed as a single secondary part with multiple cables connected, then device complexity is reduced, but disturbance on remaining outputs increases to 1% to 50%
Solution Approach 1:
The secondary part is segmented into distinct first and second output circuits with separate signal paths. This segmentation increases device complexity slightly but dramatically improves output stability by isolating impedance changes to individual circuits, reducing disturbance from 1-50% to less than 0.2%.
Data Source
AI summary
An RC voltage divider includes a primary part and a secondary part. The secondary part includes at least two equivalent output circuits that are connected in series.