lordlover95 Posted October 30, 2011 Report Share Posted October 30, 2011 Hello, I am doing a project but I am a noob when it comes to this sorta stuff. However I have an idea about creating a cane for the blind with ultrasound proximity sensors but I dont no where to start. I've been googling everything but it's all like jibberish to me. So can anyone please help me? Thanks :-\ Quote Link to comment Share on other sites More sharing options...
audioguru Posted October 30, 2011 Report Share Posted October 30, 2011 There are many articles and projects in Google.What is the jibberish? It is a simple reflection of ultrasound and detecting the delay and calculating the distance. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted October 30, 2011 Report Share Posted October 30, 2011 Here's a link to a very simple ultrasonic proximity detector. It works by sensing the amplitude of the reflected signal which isn't very good because it's dependany on how well the object refelects the sound as well as the distance. The output is either on or off which isn't very good either.http://pecworld.zxq.net/Assets/SOURCE/PDF_fun_circuit/All_pdf_files_manual/167_Dec06_01.pdfA more complicated proximity sensor would measure the delay of the reflected signal and produce a tone varying in volume or frequency. It would also be good if the intensity of the reflection is indicated so the user knows whether the object is soft or hard. Quote Link to comment Share on other sites More sharing options...
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