Voltage Measurement Circuit Isolation From Wiring Resistance Drops
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Solution Overview
Problem
The accuracy of voltage measurement systems is compromised due to voltage errors caused by wiring resistance drops when DC current is supplied to the first circuit, affecting the second circuit that requires a higher accuracy voltage.
Innovation Solution
The system employs separate high-potential and low-potential wirings for the first and second circuits, isolating them to minimize the impact of DC current on the voltage supplied to the second circuit, ensuring accurate voltage delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If common wiring is used to supply voltage to both the first circuit and second circuit, then device complexity is reduced, but voltage measurement precision deteriorates due to wiring resistance drops affecting the second circuit
Solution Approach 1:
The patent divides the wiring structure into separate first high-potential wiring, first low-potential wiring, second high-potential wiring, and second low-potential wiring. This segmentation isolates the voltage supply path for the second circuit from the DC current path of the first circuit, preventing wiring resistance drops from affecting the voltage measurement precision of the second circuit.
2Measurement precision
If separate wirings are used for the first and second circuits, then voltage measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines the separate wiring structures into an integrated configuration where the first high-potential wiring, first low-potential wiring, second high-potential wiring, and second low-potential wiring are arranged in a unified layout. This merging approach maintains the precision benefits of separate wirings while optimizing the overall device structure.
3Ease of manufacture
If DC current is supplied to the first circuit through common wiring, then power delivery is simplified, but voltage stability deteriorates due to wiring resistance drops
Solution Approach 1:
The patent segments the power delivery structure by providing separate first high-potential wiring and first low-potential wiring for the first circuit, and separate second high-potential wiring and second low-potential wiring for the second circuit. This segmentation ensures that DC current flow through the first circuit does not cause voltage drops in the second circuit, maintaining voltage stability.
Data Source
AI summary
A voltage measurement system includes a voltage reference circuit, an additional circuit, a first high-potential wiring, a first low-potential wiring, a second high-potential wiring, and a second low-potential wiring. The additional circuit receives a voltage based on a reference voltage generated by the voltage reference circuit. The additional circuit includes: a first circuit that receives a first voltage based on the reference voltage; and a second circuit that receives a second voltage based on the reference voltage. The first high-potential wiring and the first low-potential wiring are connected through the first circuit. The second high-potential wiring and the second low-potential wiring are connected through the second circuit. The first high-potential wiring and the second high-potential wiring are isolated from each other. The first low-potential wiring and the second low-potential wiring are isolated from each other.