Development of Toxic Gas Monitoring and Alarm System

Abstract

Nowadays, safety awareness brings more attention to the people, and safety is first in all industries. Safety plays major role in the current technology’s world, and it is unavoidable to adopt a good safety system in working place and apartment. Because of the technology development in sensors and IoT, lots of researches are going to improve safety in every industry. Though most of the company has the safety system but not connected to each other in the safety process. A sprinkler is one of the systems that work automatically that too in the well-established company. Most of the company is still managing with the manually operated fire-fighting system. Knowing the needs of the industry, the authors have decided to develop a safety system to monitor and react when there is a need for action after the incident. The main objective of the work is to design a toxic gas detecting using sensors and activates the alerting device/system to react to an incident. The toxic gases like NO₂, CO, CO₂, methane, butane, hydrogen sulfide (H₂S), and propane were monitored, and if these gases exceed the threshold limit, then a system can activate alarm followed by visual identification. Sensors are the vital component used in this system, which is meant for detecting different combustible/toxic gas and suitable for different applications. As this application is targeted for small-scale industries, the best price sensors were selected without compromising on requirements to keep the budget low. Once the sensor detects the toxic gas, the alarm sound is activated, which gives a sound indication of any toxic gas presence in the working environment and then automatically exhaust fan gets switched on. Sometime, fresh air fan gets activated to increase the quantity of fresh air and diluting the toxicity level till it comes to normal condition. To verify the design, a model was developed by placing a sensor, and the fan was activated after the gas was detected. Therefore, this automated system is verified in the model, and the complete system is working fine. The main advantages of this automated detection, monitoring, and alarming systems over the manual method are that it offers a quick response in time and accurate detection of an emergency and in turn leading a faster diffusion of the normal condition. The authors believe that this safety system can be used in any industry as well as a commercial building. This newly designed and verified safety system can improve safety and is easy to adopt.text.