Explosion-proof Gas Detector Optical Switch
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Solution Overview
Problem
Existing explosion-proof instruments are vulnerable to explosions exceeding their defined resistance capacity, and there is a need for a system that can be controlled externally while maintaining operational integrity in hazardous environments.
Innovation Solution
An explosion-proof electronic system featuring a rotating optical disk within a substantially explosion-proof enclosure, controlled by an external magnet, which interacts with a magnetically responsive component to sense rotation and adjust device operations, such as setting alarm thresholds in a gas detector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional control mechanisms are used in explosion-proof instruments, then the device structure remains simple, but the device cannot be controlled externally while maintaining operational integrity in hazardous environments
Solution Approach 1:
The patent replaces traditional mechanical control mechanisms with an optical control system. An optical disk with reflective surfaces is used instead of mechanical switches or buttons, allowing external control through optical signals that pass through the explosion-proof enclosure without compromising its integrity.
Solution Approach 2:
The optical disk serves as an intermediary between the external environment and the internal electronic system. It translates external optical inputs into rotational motion that can be detected by internal sensors, enabling control while maintaining the explosion-proof barrier.
2Productivity
If mechanical control components are added to enable external control, then operational responsiveness is improved, but the reliability in hazardous environments deteriorates due to potential failure points
Solution Approach 1:
The patent eliminates traditional mechanical control components (buttons, switches, dials) that could fail or compromise the explosion-proof seal. Instead, it uses an optical disk that rotates in response to external optical inputs, with its position detected by optical sensors, creating a non-contact control mechanism that maintains reliability.
Solution Approach 2:
The optical disk system is self-contained within the explosion-proof enclosure. The disk rotates freely without mechanical connections to external components, and its position is detected optically, eliminating the need for external mechanical linkages that could introduce failure points.
3Adaptability or versatility
If optical control components are integrated into the explosion-proof enclosure, then external control and responsiveness are improved, but the device complexity increases
Solution Approach 1:
The optical disk serves multiple functions: it acts as a control interface for external users, a position sensor for the processor, and a mechanical element that can be manipulated externally. This multi-functionality reduces the need for separate control components, thereby limiting the increase in overall system complexity.
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 system allows for external control of explosion-proof devices, enhancing their responsiveness and operational reliability in hazardous environments by using an optical sensor and processor to analyze rotation inputs from the disk, thereby improving alarm threshold settings and overall system control.
Implementation Method 1
an optical sensor that is configured to sense rotation of the disk
Implementation Method 2
A magnetically responsive component coupled to the disk can be moved remotely (e.g., from outside of the device) by an external magnet
Data Source
AI summary
An explosion-proof electronic system. The system comprises a substantially explosion-proof enclosure, a disk that is free to rotate about an axis, where the disk is located within the enclosure, an optical sensor that is configured to sense rotation of the disk, where the optical sensor is located within the enclosure, and a processor that is coupled to the optical sensor and analyzes a rotation input from the optical sensor to control in part the operation of the electronic system.