Abstract
In this paper, a design, implementation, and experimental validation of a solar powered fire-fighting robot incorporating multisensor probabilistic fire detection, IoT remote monitoring capability, and ammoniabased fire-fighting mechanism is presented. For fire detection, the proposed framework employs inputs in terms of flame intensity, smoke density, and temperature changes processed through a logistic regression based probabilistic model. The process flow involved in this system includes environment sensing, processing of sensor data, probabilistic fire detection, autonomous movement towards fire origin, and releasing of suppression balls containing ammonia. A total of 120 tests are carried out under both fire and no fire environments for evaluation purposes. The experiments indicate that the system under test achieves accuracy in fire detection equal to 94.2%, having an average delay of 2.8 seconds while having a false alarm percentage of 5.8%. For power provision to the system, a 12V, 7AH rechargeable battery is employed with solar charging providing autonomy of operation up to 4.6 hours under no sun conditions. The experimental study proves that the multi-sensor system outperforms traditional approaches that depend on a single sensor or robotic system that operates under water when it comes to accuracy and reaction time. The multi-sensor system offers an intelligent and sustainable solution for fire detection.
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