Using a fuzzy Poka-Yoke based controller to restrain emissions in naturally ventilated environments

Gas poisoning as a result of fuel-burning inside confined environments claims the lives of many people worldwide. Gas poisoning treatment consists of administering oxygen therapy ranging from access to fresh air to breathing 100% oxygen by a tight fitting oxygen mask. Building on these facts, this article uses Poka-Yoke concepts to prevent, alert, and control the quality of air in naturally ventilated environments. The proposed controller ensures the access of victims to fresh air until help arrives. We target naturally ventilated indoor environments where no other ventilation approaches are installed. The proposed system utilizes fuzzy logic to control the speed and cycle time of two DC-motor-powered fans based on the levels of the oxides sensed by gas detectors. As a result, fresh air is allowed into the environment to replace the polluted air utilizing one fan set while hunted air is exhausted to the outdoors using the second fan set. The proposed system is simulated where obtained results for various scenarios confirm the many advantages of the system over natural ventilation.