Cap Lamp Self-Testing to Block Faulty Mine Safety Use
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Solution Overview
Problem
Despite safety devices being provided to mitigate risks in underground mines, a small percentage of workers unknowingly or knowingly use faulty devices, which can lead to invisible situations in blind spots of machinery operators, as these devices may have broken antennas or other functional issues, posing significant safety risks.
Innovation Solution
A safety device configured with a portable power source, charging interface, RFID tag, wireless communication, input/output user-interfaces, and a processor that executes automated and manual test procedures to ensure the device is functional before allowing use, preventing the use of faulty devices by disabling the output interface if tests fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If workers are provided with safety devices to mitigate risks in underground mines, then worker safety is improved, but faulty devices may be used by workers who don't check functionality, leading to safety risks
Solution Approach 1:
The system performs automated functionality tests on safety devices while they are charging, before the workers use them. This preliminary testing ensures that faulty devices are identified and disabled before they can pose a safety risk, resolving the contradiction between providing safety devices and preventing harmful effects from faulty ones.
Solution Approach 2:
The system continuously monitors device functionality through automated tests and provides feedback by enabling or disabling device operation based on test results. This feedback mechanism ensures that only functional devices can be used, eliminating the safety risk from faulty devices while maintaining the protective function of the safety device system.
2Reliability
If automated test procedures are executed on safety devices, then device functionality is ensured, but device complexity increases
Solution Approach 1:
The safety devices perform their own automated functionality tests while charging, without requiring external testing equipment or personnel. The device self-diagnoses its components (antenna, display, buttons, sensors) and reports its status, which simplifies the overall system complexity while ensuring reliable functionality testing.
3Reliability
If workers are monitored to ensure they use functional devices, then safety is improved, but worker privacy and autonomy are reduced
Solution Approach 1:
The safety devices autonomously perform self-testing and self-diagnosis without requiring worker intervention or monitoring. The devices independently determine their own functionality status and enable or disable themselves accordingly, maintaining worker autonomy while ensuring only functional devices are used.
Solution Approach 2:
The charging station acts as an intermediary that facilitates automated testing and communication between devices and the central system. This intermediary handles the complexity of monitoring and testing, allowing workers to simply charge their devices without being directly monitored, thus preserving autonomy while ensuring functionality.
Data Source
AI summary
The present invention discloses a safety device adapted to prevent workers from going into hazardous environment, such as underground using the faulty safety device. As a safety device, typically embodied as a cap lamp, must be charged prior to each use, the device is adapted to detect when the device is removed from the charger. The device starts to blink continuously when disconnected from the charger. An automated test procedure is completed on the device. The user may also complete a manual portion of the test procedure to make the device usable. When the test procedure is completed successfully, the lamp stops blinking. If the test procedure is not successful, the lamp continues blinking to effectively prevent user from using a faulty device.