Current Voltage Detection Printed Board High-Frequency Stability
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Solution Overview
Problem
Existing current and voltage detectors in high-frequency power systems face issues such as variations in detection values due to wiring variations, self-resonant frequency limitations, and difficulties in installation and maintenance, which affect detection accuracy and phase difference detection.
Innovation Solution
The use of a current detection printed board with a coiled wire formed on a board having a cutout, where the wire penetrates between the board's layers, and a voltage detection printed board with a wire functioning as a capacitor electrode, both designed to reduce variations and improve installation and maintenance by using through holes and pattern wires for stable detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional current and voltage detectors are used in high-frequency power systems, then detection function is provided, but variations in detection values occur due to wiring variations and self-resonant frequency limitations
Solution Approach 1:
The patent replaces traditional mechanical wiring-based detectors with a printed board structure where conductive patterns are directly formed on the substrate. This substitution eliminates manual wiring variations and provides consistent detection characteristics through standardized PCB manufacturing processes, directly addressing the measurement precision and reliability issues.
Solution Approach 2:
The patent modifies the detection system by changing the physical parameters of the detector structure - using controlled impedance traces, specific trace widths, and standardized board materials with known electrical properties. These parameter changes ensure consistent detection values by controlling the electrical characteristics of the detection path.
2Ease of operation
If conventional detectors are installed in high-frequency power systems, then current and voltage detection is enabled, but installation and maintenance become difficult
Solution Approach 1:
The patent combines the detection circuitry directly with the power transmission path by integrating the detection traces into the same printed board structure. This merging eliminates separate detector components and simplifies installation, as the detection function is built into the existing board structure rather than requiring separate installation steps.
Solution Approach 2:
The printed board structure serves multiple functions simultaneously - it provides mechanical support, electrical connection, and detection capability. This multi-functionality reduces the overall device complexity by eliminating dedicated detector components and simplifying the system architecture.
3Measurement precision
If traditional detectors are used for phase difference detection, then basic detection is possible, but accuracy of phase difference detection deteriorates
Solution Approach 1:
The patent replaces traditional separate current and voltage detectors with an integrated printed board structure where both detection paths are formed with controlled impedance. This substitution ensures consistent electrical characteristics and timing relationships, improving phase difference detection accuracy by eliminating the timing variations introduced by manual wiring.
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
These designs minimize variations in detection values, enhance detection accuracy, and simplify installation and maintenance by stabilizing the position of detection components, thereby improving the detection of AC currents and voltages across a wide frequency range.
Implementation Method 1
When a conductor, in which an AC current flows, is disposed adjacent to the cutout, a current flowing in the wire through electromagnetic induction is output.
Implementation Method 2
a wire that is formed along the periphery of the cutout... when a conductor, in which an AC voltage is generated, is disposed adjacent to the cutout, the wire functions as an electrode of a capacitor
Data Source
AI summary
A current and voltage detection printed board includes a board formed with a penetration hole; a first pattern wire formed at a periphery of the penetration hole; a second pattern wire formed at the periphery of the penetration hole; a plurality of first through holes that penetrate the board between the first and second pattern wires; a third pattern wire formed at the periphery of the penetration hole; a fourth pattern wire formed at the periphery of the penetration hole; and a plurality of second through holes that penetrate the board between the third and fourth pattern wires.