Electrical Appliance Malfunction Detection Device
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Solution Overview
Problem
Existing devices for detecting electrical appliance malfunctions require technical expertise and are not user-friendly, especially for unskilled operators, and may not detect minor malfunctions or wear-out issues in electrical systems and appliances.
Innovation Solution
A device with input and output ports connected to a central measuring and processing unit that automatically determines electrical parameters at preset intervals, using electro-mechanical and electronic components, and provides easy-to-read alarm messages through acoustic or visual signals, capable of detecting malfunctions in both appliances and connected systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If professional testing devices are used to detect electrical malfunctions, then measurement precision is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent introduces an intermediary device that connects between the electrical system and the user. This intermediary automatically performs measurements and presents results in a simplified format (visual indicators like LEDs or alphanumeric displays showing pass/fail status), thereby maintaining measurement precision while eliminating the need for users to interpret complex technical data or operate sophisticated testing equipment.
2Ease of operation
If automatic detection is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The device is designed to perform self-testing and automatic detection of electrical malfunctions. It autonomously connects to the electrical system, executes measurement sequences, evaluates results against predetermined criteria, and provides feedback without requiring user intervention. This self-service capability simplifies operation while the internal automation handles the complexity of multiple measurement functions.
3Reliability
If multiple parameters are measured simultaneously, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple measurement functions (grounding resistance measurement, insulation resistance measurement, RCD trip time measurement, etc.) into a single integrated device. The device uses a unified measurement circuit that can selectively perform different types of measurements by connecting to different terminals, thereby achieving comprehensive detection reliability while avoiding the complexity of having separate dedicated devices for each measurement type.
4Reliability
If continuous monitoring is performed, then reliability is improved, but use of energy increases
Solution Approach 1:
The device implements periodic monitoring rather than continuous monitoring, performing measurements at predetermined intervals or when triggered by specific events (such as when the electrical system is switched on). This periodic action maintains reliability by regularly checking system status while significantly reducing energy consumption compared to continuous real-time monitoring.
Data Source
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AI summary
The present invention refers to a device for detecting and signalling malfunctions in use of electrical appliances comprising a cyclical or continuous central measuring and processing unit (15) connected to two input/output ports (19, 19') for connecting between a source of electrical power (20, 20') and an electrical appliance (30, 30') respectively, the central unit (15) being connected to at least one signalling means (11, 12, 12', 13) controlled by a malfunction occurrence signal processed by the central unit (15).