http://blogs.mathworks.com/pick/2007/06/20/zero-crossings-on-arbitrary-signals/ <a href="http://www.mathworks.com/matlabcentral/fileexchange/loadAuthor.do?objectId=1093599&objectType=author">Brett</a> & <a href="http://www.mathworks.com/matlabcentral/fileexchange/loadAuthor.do?objectId=1094142&objectType=author">Jiro</a> share favorite user-contributed submissions from the File Exchange. Fri, 10 Feb 2012 16:12:39 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://blogs.mathworks.com/pick/2007/06/20/zero-crossings-on-arbitrary-signals/#comment-14216 thitinun Sun, 14 Aug 2011 17:34:31 +0000 http://blogs.mathworks.com/pick/2007/06/20/zero-crossings-on-arbitrary-signals/#comment-14216 I do my project about surge arrester in embedded system,using microcontroller that sampling data and send to computer by serial com port.I already get data and process it by matlab but i can't find the zero crossing point.In former times,i using 2 way to check zero crossing point.first, by detect slope,diff of vector.the second ,using minimum and sign changing but all was not work.Now,I set point of zero crossing manually by see in graph plotting that very hard for me to do.Please help me about Zero crossing function,could you send you m-file or code that you write to me.Thank you very much for your help. I do my project about surge arrester in embedded system,using microcontroller that sampling data and send to computer by serial com port.I already get data and process it by matlab but i can’t find the zero crossing point.In former times,i using 2 way to check zero crossing point.first, by detect slope,diff of vector.the second ,using minimum and sign changing but all was not work.Now,I set point of zero crossing manually by see in graph plotting that very hard for me to do.Please help me about Zero crossing function,could you send you m-file or code that you write to me.Thank you very much for your help.

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