Shielding Layer Detection Circuit for Leakage and Breakage Faults
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Solution Overview
Problem
Existing shielding layer detection circuits in power supply transmission lines rely on semiconductor materials, which are prone to aging and require frequent maintenance, leading to increased labor costs.
Innovation Solution
A shielding layer detection circuit utilizing resistive voltage division assemblies and a control module to detect electric leakage and breakage signals, with a switch module to disconnect the power supply bus bar group when faults are detected, thereby improving durability and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If semiconductor materials (switching transistors or diodes) are used as sampling elements in the shielding layer detection circuit, then the detection function can be achieved, but the components are prone to aging and require frequent maintenance
Solution Approach 1:
The patent replaces expensive, long-lived but failure-prone semiconductor components with simple, inexpensive resistor elements that are extremely durable. The resistor-based voltage division assembly provides reliable detection functionality without the aging issues of semiconductor materials, effectively using simple, maintenance-free components to replace complex, maintenance-requiring ones.
Solution Approach 2:
The patent substitutes the semiconductor-based electronic detection mechanism with a purely resistive voltage division mechanism. By using resistor elements to detect voltage changes caused by shielding layer faults, the system eliminates the need for active semiconductor components like switching transistors and diodes, thereby improving reliability and reducing maintenance requirements.
2Ease of operation
If semiconductor components are used in the detection circuit, then detection functionality is achieved, but maintenance costs and labor requirements increase
Solution Approach 1:
The patent employs inexpensive resistor elements that rarely fail, eliminating the need for frequent replacement of aging semiconductor components. This dramatically reduces maintenance frequency and associated labor costs while preserving full detection functionality for both electric leakage and breakage conditions.
3Device complexity
If the conductive shielding layer is used without continuous monitoring, then the system is simpler, but safety risks increase due to undetected faults
Solution Approach 1:
The patent implements a simple yet effective detection circuit using only resistor elements arranged in voltage division assemblies. This minimalistic approach provides comprehensive safety monitoring for both electric leakage and breakage faults without requiring complex semiconductor-based systems, achieving high reliability through simplicity.
Solution Approach 2:
The detection circuit continuously monitors the voltage distribution across the shielding layer through the resistor elements. When faults occur (electric leakage or breakage), the voltage distribution changes, generating detection signals that trigger the switch module to disconnect power supply, providing real-time feedback for safety protection.
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
The proposed solution enhances detection accuracy and durability, reducing the need for frequent maintenance and lowering maintenance costs by using resistor elements that are less susceptible to aging.
Implementation Method 1
a first resistive voltage division assembly, connected to the conductive shielding layer group to detect an electric leakage signal
Implementation Method 2
a second resistive voltage division assembly, including a first detection terminal and a second detection terminal, where the second resistive voltage division assembly has the first detection terminal connected to one terminal of the conductive shielding layer group and the second detection terminal connected to the other terminal of the conductive shielding layer group to detect a breakage signal
Data Source
AI summary
The present invention discloses a shielding layer detection circuit and a transmission system. The shielding layer detection circuit includes a first resistive voltage division assembly, a second resistive voltage division assembly, a switch module, and a control module. The first resistive voltage division assembly is connected to a conductive shielding layer group to detect an electric leakage signal; the second resistive voltage division assembly has a first detection terminal connected to one terminal of the conductive shielding layer group and a second detection terminal connected to the other terminal of the conductive shielding layer group to detect a breakage signal; the switch module is connected to a power supply bus bar group to switch a transmission line connection/disconnection state of the power supply bus bar group.