Individuals entering dangerous environments such as manure storage tanks and sewers need to be concerned with the quality of the air around them. Making a portable, inexpensive, reliable monitor for air quality would greatly increase the safety of these workers. Monitoring the oxygen level in the ambient air provides an effective way of detecting hazardous situations. Utilizing a Teledyne Microfuel sensor to detect the amount of oxygen in the atmosphere, this detection system features a microprocessor with simple signal processing to increase the reaction speed of the alarm. Additionally, to keep the device lightweight, a strict power management system is used to provide portable, rechargeable power and an effective operating time of the device.
 

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