{"id":63,"date":"2015-09-08T00:56:04","date_gmt":"2015-09-08T00:56:04","guid":{"rendered":"http:\/\/engineeringseniorproject.pages.tcnj.edu\/?page_id=63"},"modified":"2015-09-08T00:56:04","modified_gmt":"2015-09-08T00:56:04","slug":"device_requirements","status":"publish","type":"page","link":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/device_requirements\/","title":{"rendered":"Device Requirements"},"content":{"rendered":"\n<table id=\"tablepress-2\" class=\"tablepress tablepress-id-2\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Requirement<\/th><th class=\"column-2\">Specifications<\/th><th class=\"column-3\">Justifications<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Device must measure surface temperature of gluteal tissue<\/td><td class=\"column-2\">Sensors must measure surface temperatures between -30-50\u00baC +\/- 1\u00baC<\/td><td class=\"column-3\">Apply object of known temperature at -30\u00baC, 24\u00baC, 50\u00baC to device. Compare device output temperatures to thermometer measurements of object. N=5 trials.  <\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Device must measure interface pressure of gluteal tissue<\/td><td class=\"column-2\">Sensors must measure interface pressure in range of 0-250 mmHg +\/1.0 mmHg<br \/>\n<br \/>\nSensors must placed no further than 1 cm apart inside and 3 cm apart outside the ischial tuberosity area<\/td><td class=\"column-3\">Apply loads of preset weights over defined area to simulate interface pressure of 0, 115, and 250 mmHg, respectively. Measure loads with a scale and area with a ruler. Compare device reported interface pressures with hand calculated pressures. N= 10 trials. <br \/>\n      Measure distance between sensors with a ruler. N=5<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Device must adjust surface temperature of the gluteal tissue.<\/td><td class=\"column-2\">Device must decrease the temperature at areas of skin contact by 1\u00baC.<\/td><td class=\"column-3\">Place object with same dimension of gluteal tissue (based on Human Factors) on the cushion at a temperature of 35 \u00baC. Allow the device to complete 1 adjustment cycle, then observe the temperature recorded at different locations to confirm reduced temperature by 1.0\u02da C.<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Device must adjust pressure at defined regions of gluteal tissue. <\/td><td class=\"column-2\">2.90 cm x 2.90 cm +\/- 0.2 cm inside ischial tuberosity area<br \/>\n4.2) 4.90 cm x 4.90 cm +\/- 0.2 cm outside ischial tuberosity area <br \/>\nDevice must adjust pressure when measured average pressure is greater than or equal 115 mmHg +\/- 5 mmHg for a 15 minute +\/- 1 minute time period. <\/td><td class=\"column-3\">Apply loads of 12.90 N or higher over 2.90 cm x 2.90 cm +\/- 0.2 cm area inside, or loads of 36.85 N or higher over  4.90 cm x 4.90 cm +\/- 0.2 cm area outside ischial tuberosity area for 15 minutes using a timer. Remeasure interface pressure over applied load. Confirm that interface pressure reported by device is less than 115 mmHg +\/- 5 mmHg. N= 10 trials. <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-2 from cache -->\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":10,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-63","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/pages\/63","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/comments?post=63"}],"version-history":[{"count":0,"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/pages\/63\/revisions"}],"wp:attachment":[{"href":"https:\/\/engprojects.tcnj.edu\/smartcushion16\/wp-json\/wp\/v2\/media?parent=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}