{"id":69412,"date":"2022-03-07T09:36:43","date_gmt":"2022-03-07T13:36:43","guid":{"rendered":"https:\/\/seniordesign.digitalscholar.rochester.edu\/spring2022\/?p=227"},"modified":"2022-09-12T16:58:24","modified_gmt":"2022-09-12T20:58:24","slug":"agr","status":"publish","type":"post","link":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/agr\/","title":{"rendered":"AGR"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Team<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Basil T Gaji<\/li><li>Mahin M Ghani<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Mentor<\/h2>\n\n\n\n<p>Jack Mottley, Daniel Phinney<\/p>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\">I. <strong>INTRODUCTION<\/strong><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p>AGR currently makes use of an external sensor driver board for their AGR Spectrometer (Spectre). Since the board is not designed in-house, it cannot be customized to provide the best performance and accuracy which impacts the scalability of Spectre as a high-performance measurement device.<\/p>\n\n\n\n<p>Our sensor driver board addresses this problem with a design that is intentionally done, stripping away unnecessary components and adding ones that improve performance and reduce costs. Our design also allows for continuous development and improvement.<\/p>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\">II. DESIGN<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>PHYSICAL DESIGN<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"670\" height=\"459\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screenshot_20220421_014417.png\" alt=\"\" class=\"wp-image-2153\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screenshot_20220421_014417.png 670w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/03\/Screenshot_20220421_014417-300x206.png 300w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">CIRCUIT <strong>BLOCK DIAGRAM<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"837\" height=\"605\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-84.png\" alt=\"\" class=\"wp-image-77652\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-84.png 837w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-84-300x217.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-84-768x555.png 768w\" sizes=\"auto, (max-width: 837px) 100vw, 837px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>FUNCTIONAL OVERVIEW<\/strong><\/h4>\n\n\n\n<p><strong>Spectre Sensor:<\/strong><\/p>\n\n\n\n<p>This is the main sensor\/AGR Spectre sensor<\/p>\n\n\n\n<p><strong>Buffer Amplifier:<\/strong><\/p>\n\n\n\n<p>An increase in the current consumption at the data output terminal also increases the chip temperature and so causes dark current to rise. To avoid this, we connect a buffer amplifier to the data terminal so that the current flow is minimized.<\/p>\n\n\n\n<p><strong>Digital Buffers:<\/strong><\/p>\n\n\n\n<p>The digital buffers serve as buffers for input signals to the main Spectre sensor and output signals from the sensor.<\/p>\n\n\n\n<p><strong>Temp\/Humidity Sensor:<\/strong><\/p>\n\n\n\n<p>This is a secondary sensor on the driver board that aids calibration during optical measurements since temperature and humidity are critical factors to the device&#8217;s measurement accuracy.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>HIGH-LEVEL REQUIREMENTS LIST<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Sensors<\/li><li>Buffer Amplifiers<\/li><li>Voltage Regulators<\/li><li>Board level input\/output<\/li><li>LEDs<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>SCHEMATIC DESIGN<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"595\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135-1024x595.png\" alt=\"\" class=\"wp-image-89722\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135-1024x595.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135-300x174.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135-768x446.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135-1200x697.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-135.png 1428w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>PHYSICAL BOARD LAYOUT<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"747\" height=\"817\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-134.png\" alt=\"\" class=\"wp-image-89712\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-134.png 747w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-134-274x300.png 274w\" sizes=\"auto, (max-width: 747px) 100vw, 747px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>BOARD CAD MODEL<\/strong><\/h4>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/myhub.autodesk360.com\/ue2d5f588\/shares\/public\/SH9285eQTcf875d3c53947a698080fca6948?mode=embed\" width=\"1024\" height=\"768\" allowfullscreen=\"true\" webkitallowfullscreen=\"true\" mozallowfullscreen=\"true\" frameborder=\"0\"><\/iframe>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>BILL OF MATERIALS<\/strong><\/h4>\n\n\n\n<p>The following is a non-exhaustive BOM. However, the most relevant components are included here. Not included are non-active elements such as resistors and capacitors and the Spectre sensor.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>PART #<\/td><td>DESCRIPTION<\/td><td>UNIT COST<\/td><\/tr><tr><td>HDC1080DMBR<\/td><td>\u00b12% RH 0 ~ 100% RH Humidity, Temperature I\u00b2C SMD Humidity Sensors\/Temperature and Humidity Sensors ROHS<\/td><td>$2.86<\/td><\/tr><tr><td>70543-0009<\/td><td>Pin Header, Wire-to-Board, 2.54 mm, 1 Rows, 10 Contacts, Through Hole Straight, SL 70543 Series<\/td><td>$1.64<\/td><\/tr><tr><td>TPS76350DBVR<\/td><td>Low Dropout Regulators(LDO) SOT-23-5 RoHS<\/td><td>$1.50<\/td><\/tr><tr><td>MLG1005S1N1BTD25<\/td><td>1000mA 1.1nH \u00b10.1nH 30m\u03a9 0402 Inductors (SMD) ROHS<\/td><td>$0.65<\/td><\/tr><tr><td>SN74LVC1G17DCKR<\/td><td>74LVC 1 Buffers\uff0cNon-OppositeSide 1 SC-70-5 Buffers \/ Drivers ROHS<\/td><td>$0.32<\/td><\/tr><tr><td>SN74AHCT125PWR<\/td><td>74AHCT 1 Buffers\uff0cNon-OppositeSide 4 TSSOP-14 Buffers \/ Drivers ROHS<\/td><td>$0.72<\/td><\/tr><tr><td>AR_14_HZL-TT<\/td><td>CONN IC DIP SOCKET 14POS TIN<\/td><td>$0.80<\/td><\/tr><tr><td>NCD1206B1<\/td><td>Blue 1206 Light Emitting Diodes (LED) ROHS<\/td><td>$0.03<\/td><\/tr><tr><td>15-21\/R6C-FQ1R1B\/2T<\/td><td>Red 1206 Light Emitting Diodes (LED) ROHS<\/td><td>$0.04<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>CONCLUSION<\/strong><\/h4>\n\n\n\n<p>We found that the total cost of manufacturing, assembling and shipping our board even in much smaller quantities is about 66.6% cheaper than the cost of AGR purchasing a similar board from other market suppliers. At the time of writing, the board was not yet in hand so we couldn&#8217;t carry out performance tests to inspect improvements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Driver Board for AGR\u2019s Spectre<\/p>\n","protected":false},"author":6242,"featured_media":39,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[116],"tags":[],"coauthors":[8612],"class_list":["post-69412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ece-archive"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AGR - 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