[PDF][PDF] Automatic gas leakage monitoring system using MQ-5 sensor

MA Baballe, UY Magashi, BI Garko… - Review of Computer …, 2021 - academia.edu
MA Baballe, UY Magashi, BI Garko, AA Umar, YR Magaji, M Surajo
Review of Computer Engineering Research, 2021academia.edu
Since the beginning of time, humans have used security systems of one form or another. To
alert the community to a danger, signals were once given through shouting and sound. Later
this was replaced with the clapping of hands and the introduction of signals to inform the
community or transmit a certain message if there was an outbreak of fire, an abduction or a
burglary, particularly during the early periods of some African societies, such as in Nigeria [1-
3]. All such notification methods or warnings are by nature both necessary and …
Since the beginning of time, humans have used security systems of one form or another. To alert the community to a danger, signals were once given through shouting and sound. Later this was replaced with the clapping of hands and the introduction of signals to inform the community or transmit a certain message if there was an outbreak of fire, an abduction or a burglary, particularly during the early periods of some African societies, such as in Nigeria [1-3]. All such notification methods or warnings are by nature both necessary and undependable and unmethodical. The first fire alarm system was invented back in 1852 by Moses Farmer and Dr. William F. Channing. This system consisted of two fire alarm boxes which each had a telegraphic key and a handle. When a fire or explosion is noticed in an organization, factory, home, or place of business, somebody has to reach inside one of these boxes and crank the handle to dispatch a notification about the fire or explosion to the nearest alarm station. The operator at the station will then take the message and notify the fire department about the fire so that they can send assistance. The earliest electronic fire alarm system was invented almost four decades later, in 1890, by a scientist named Francis Robbins
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