Final Year Project Presentation - NUI Galway National …最后一年的项目介绍-高威国立….pptVIP

Final Year Project Presentation - NUI Galway National …最后一年的项目介绍-高威国立….ppt

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Final Year Project Presentation - NUI Galway National …最后一年的项目介绍-高威国立…

Final Year Project Presentation Laura Reddy Visual Alerting system for Emergency Vehicle Proximity for hear compromised drivers The aim of this project is to create a way for people who are deaf or who are wearing head protection to be more aware of emergency vehicles that are approaching them. This involves detecting the sounds and then comparing them to the specific characteristics of the different sirens to lower the chances of false alarms going off. Visual Alerting system for Emergency Vehicle Proximity for hear compromised drivers cont. Once the siren has been detected it should start a led flashing so that the driver will be aware of the presence of the emergency vehicle. The system will have to be battery operated so that it can easily be placed on the dash board of a car or on a motorbike. The system will also have to have a method of turning on and off so that the user can turn it off while they are not driving to help with power consumption. Garda Sirens The Gardaí have two different sirens that they use to let drivers know that they are approaching. The 1st siren is the one that they would use while driving in busy traffic or trying to get someone to pull over. The 2nd siren is the one that they use if they are approaching a busy intersection and they need to let people know that they are trying to get through. I have taken sample recordings of both of these sirens. Matlab I have used Matlab to get graphs of these sirens. I have saved the results from reading the siren into Matlab into a text file called outFile. I have also tried to do some Fourier analysis on both of these sound waves. The graphs for the Fourier analysis are not coming out like sin waves they are coming out like strange circles when I just use the plot() but if I use the semilog() command the results come better for the 1st siren but they disappear for the 2nd siren. Graph of 1st Garda Siren Graph of Fourier analysis on the 1st Siren using plot() Graph of Fourier analysi

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