Transformer-Free Leakage Detection Circuit for Compact Plugs
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Solution Overview
Problem
Existing leakage current detection circuits require bulky transformers and complex chip control structures, leading to increased weight, volume, and production costs, as well as complicated circuit designs and lower production efficiency.
Innovation Solution
A leakage current detection circuit that eliminates the need for transformers by using S1 and S2 inductive terminals to generate a leakage inductive signal, and incorporates a drive module to control the switch module and circuit breaker, simplifying the circuit layout and reducing component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transformers and chip control structures are used in leakage current detection circuits, then leakage detection and power failure protection can be achieved, but the weight and volume of the plug increase
Solution Approach 1:
The patent extracts and eliminates the transformer component from the leakage current detection circuit. Instead of using a transformer to detect leakage current, the invention uses a simplified circuit configuration with a leakage detection circuit that directly monitors the circuit without requiring a transformer, thereby reducing the weight and volume of the plug while maintaining leakage detection and power failure protection functionality
Solution Approach 2:
The patent replaces the traditional electromagnetic transformer-based detection mechanism with an electronic circuit-based detection method. The leakage detection circuit uses electronic components such as resistors, capacitors, and transistors to detect leakage current, substituting the mechanical/electromagnetic transformer system with a lighter electronic system that achieves the same protective function
2Reliability
If transformers and chip control structures are used in leakage current detection circuits, then leakage detection and power failure protection can be achieved, but the volume of the plug increases
Solution Approach 1:
The patent extracts and eliminates the transformer component from the leakage current detection circuit. Instead of using a transformer to detect leakage current, the invention uses a simplified circuit configuration with a leakage detection circuit that directly monitors the circuit without requiring a transformer, thereby reducing the weight and volume of the plug while maintaining leakage detection and power failure protection functionality
Solution Approach 2:
The patent merges the leakage detection function with the existing circuit structure by integrating the detection circuit directly into the plug's control circuit board. This consolidation eliminates the need for separate transformer components and reduces overall volume by combining multiple functions into a more compact integrated design
3Reliability
If many circuit structures are used in leakage current detection circuits, then leakage detection can be achieved, but the circuit layout becomes complicated and design becomes troublesome
Solution Approach 1:
The patent extracts and removes unnecessary circuit components such as transformers and complex chip control structures from the leakage detection circuit. The simplified circuit configuration retains only the essential elements needed for leakage detection, significantly reducing circuit layout complexity and making the design more straightforward
Solution Approach 2:
The patent segments the leakage detection circuit into distinct functional modules with clear responsibilities. The circuit is divided into a leakage detection section, a control section, and a execution section, with each part having a specific function. This modular segmentation simplifies the overall circuit layout and makes the design and troubleshooting process more manageable
4Reliability
If many circuit structures are used in leakage current detection circuits, then leakage detection can be achieved, but production becomes complicated and production efficiency decreases
Solution Approach 1:
The patent extracts and removes unnecessary circuit components such as transformers and complex chip control structures from the leakage detection circuit. The simplified circuit configuration retains only the essential elements needed for leakage detection, significantly reducing circuit layout complexity and making the design more straightforward
Solution Approach 2:
The patent segments the leakage detection circuit into distinct functional modules with clear responsibilities. The circuit is divided into a leakage detection section, a control section, and a execution section, with each part having a specific function. This modular segmentation simplifies the overall circuit layout and makes the design and troubleshooting process more manageable
5Reliability
If transformers and chip control structures are used in leakage current detection circuits, then leakage detection and power failure protection can be achieved, but the cost increases
Solution Approach 1:
The patent extracts and eliminates the transformer component from the leakage current detection circuit. Instead of using a transformer to detect leakage current, the invention uses a simplified circuit configuration with a leakage detection circuit that directly monitors the circuit without requiring a transformer, thereby reducing the weight and volume of the plug while maintaining leakage detection and power failure protection functionality
Solution Approach 2:
The patent replaces expensive transformer components with cheaper electronic circuit elements such as resistors, capacitors, and transistors. These simpler electronic components are more cost-effective and easier to manufacture, reducing the overall manufacturing cost while maintaining the essential leakage detection and protection functions
Data Source
AI summary
The present invention relates to the technical field of leakage protection, in particular to a leakage current detection circuit and a device thereof. The connected S1 inductive terminal and the S2 inductive terminal can be signal-connected, and the driving module detects whether the S1 inductive terminal and the S2 inductive terminal are connected by a signal. There is a connection signal to judge whether there is leakage, and the drive module turns the switch module on or off to control whether the circuit breaker generates a circuit breaker signal, and then the main switch S can be disconnected when leakage occurs to ensure the safety of electricity use. There is no need to set up a transformer. Reduced volume, simple circuit structure, and easier production.