Statisk ljudtryckssensor : Att konstruera ett mobilt mätsystem för vapenindustrin

Sammanfattning: Bofors Test Center has during recent years gained increased critiques concerning loud sound levels associated with their daily activities, which mainly comprises test firing of newly developed weapons and ammunition. The noise that occurs sometimes result in discomfort for the public, with complaints as a consequence. In the long run this could lead to the county administrative board establishing limits or demanding the company to control the noise levels they cause. If the company could prevent the authority’s eventual demands by registering the sound levels overtime, then this will be seen as a guarantee for the company to continue with the same activities they do today.The purpose with this thesis is to produce a mobile unit to measure and log all values that exceed the threshold set at 80 dBC. Bofors Test Center should later have the opportunity to produce more copies of this unit to be placed permanently or mobile within Bofors Test Centers neighboring if desired.To achieve this we had to investigate controller, power supply, sensor and logging. Communication between the unit and a server was excluded since the project would become too big.The final product is a unit that saves its measured peak-values on a USB-stick and types out the highest and latest measured value on a display.