{"id":99,"date":"2020-03-01T19:02:03","date_gmt":"2020-03-01T19:02:03","guid":{"rendered":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/?p=99"},"modified":"2020-03-01T19:02:03","modified_gmt":"2020-03-01T19:02:03","slug":"sojeongs-status-update-for-2-29-2020","status":"publish","type":"post","link":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/2020\/03\/01\/sojeongs-status-update-for-2-29-2020\/","title":{"rendered":"Sojeong&#8217;s Status Update for 2\/29\/2020"},"content":{"rendered":"<p class=\"p1\">This week I tried using the angles of the acceleration as new features to the SVM. I decided to use the angle between the xy-plane and the z-axis because that would be the angle that changes the most when a person falls. However, I should think more about which axis to use after collecting some data from our device as the orientation of the accelerometer in our device and the phone would be different. I should also consider that the device will be placed inside a pocket, which can also change the orientation.<\/p>\n<p class=\"p1\">The angle was defined as: atan(az\/(ax^2+ay^2)^0.5) The graph below shows that the angle fluctuates a lot for a fall, while it stays mostly constant for walking.<\/p>\n<figure id=\"attachment_100\" aria-describedby=\"caption-attachment-100\" style=\"width: 239px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-100\" src=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.39.03-PM-300x182.png\" alt=\"\" width=\"239\" height=\"145\" srcset=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.39.03-PM-300x182.png 300w, http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.39.03-PM.png 704w\" sizes=\"(max-width: 239px) 100vw, 239px\" \/><figcaption id=\"caption-attachment-100\" class=\"wp-caption-text\">forward fall<\/figcaption><\/figure>\n<figure id=\"attachment_102\" aria-describedby=\"caption-attachment-102\" style=\"width: 237px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-102 \" src=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.54.27-PM-300x177.png\" alt=\"\" width=\"237\" height=\"140\" srcset=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.54.27-PM-300x177.png 300w, http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-content\/uploads\/sites\/99\/2020\/03\/Screen-Shot-2020-03-01-at-1.54.27-PM.png 714w\" sizes=\"(max-width: 237px) 100vw, 237px\" \/><figcaption id=\"caption-attachment-102\" class=\"wp-caption-text\">walking<\/figcaption><\/figure>\n<p class=\"p1\">In ter<span style=\"font-size: 1rem\">ms of schedule, we are on track. For next week, I would really need to start collecting and using the data from our actual device as the RPi will be ready to use. All the data that I collected this week and last week were all done in the same position, but I should also try collecting them from different positions and see if they make any difference.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This week I tried using the angles of the acceleration as new features to the SVM. I decided to use the angle between the xy-plane and the z-axis because that would be the angle that changes the most when a person falls. However, I should think more about which axis to use after collecting some &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/2020\/03\/01\/sojeongs-status-update-for-2-29-2020\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Sojeong&#8217;s Status Update for 2\/29\/2020&#8221;<\/span><\/a><\/p>\n","protected":false},"author":318,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/posts\/99"}],"collection":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/users\/318"}],"replies":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":1,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/posts\/99\/revisions"}],"predecessor-version":[{"id":103,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/posts\/99\/revisions\/103"}],"wp:attachment":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s20-teame7\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}