{"id":878,"date":"2014-08-01T16:22:01","date_gmt":"2014-08-01T20:22:01","guid":{"rendered":"https:\/\/engineering.jhu.edu\/fsag\/?page_id=878"},"modified":"2017-05-24T18:57:39","modified_gmt":"2017-05-24T22:57:39","slug":"biosensing-signal-processing","status":"publish","type":"page","link":"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/biosensing-signal-processing\/","title":{"rendered":"Biosensing &Signal Processing"},"content":{"rendered":"

Bio-sensing<\/strong><\/p>\n

In order to measure the flow-induced sounds inside the canonical phantom of the thorax, we will use commercially available cardiac sound devices such as the Hewlett Packard HP\u201321050A Contact Sensor and the BIOPAC TSD\u2013108 Physiological Sounds Transducer (Contact Microphone). The HP Model 21050A Contact Sensor is designed to pick up heart sound and pulse wave signals for diagnostic references in biomedical studies.\u00a0The 21050A Contact Sensor can be hand held or strapped to the phantom. It is important that the Contact Sensor housing be held firmly in place. This is especially true for low frequency sounds since the signal is the result of the displacement of the Contact sensor tip with respect to the housing. The BIOPAC TSD108 can record a variety of acoustical signals, including heart sounds and sounds associated with rubbing or grinding (e.g., Bruxism). The acoustical transducer element is similar to the HP-21050A in that it uses a piezo-electric ceramic disk, which is bonded to the interior of a circular metallic housing.<\/p>\n

Specifications for the HP 21050A Contact Sensor are listed below.
\nSensitivity : Force (10 uV\/dyne), displacement (40mV\/micron).<\/em>
\nFrequency response : 0.02 Hz to 2000Hz, dependent upon the mechanical impedance of source and strapping to body.<\/em>
\nCapacitance : 20nF.<\/em>
\nWeight : Contact Sensor head (3.5oz\/99gr), with accessories (8oz\/227gr).<\/em>
\nSize : Contact Sensor head (1.1in diameter and 1.14in thickness\/28mm diameter and 29mm thickness).<\/em><\/p>\n

Specifications for the BIOPAC TSD108 Contact Microphone are listed below.
\nNoise : 5 uV rms \u2013 (500 Hz – 3500 Hz).<\/em>
\nFrequency response: 35 Hz to 3500 Hz.<\/em>
\nOutput : 2 V (p-p) maximum.\u2028<\/em>
\nWeight : 9 g.<\/em>
\n\u2028Size : 29mm diameter, 6mm thickness.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Bio-sensing In order to measure the flow-induced sounds inside the canonical phantom of the thorax, we will use commercially available cardiac sound devices such as the Hewlett Packard HP\u201321050A Contact Sensor and the BIOPAC TSD\u2013108 Physiological Sounds Transducer (Contact Microphone). …<\/p>\n

Biosensing &Signal Processing<\/span> Read More »<\/a><\/p>\n","protected":false},"author":122,"featured_media":0,"parent":496,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"class_list":["post-878","page","type-page","status-publish","hentry"],"yoast_head":"\nBiosensing &Signal Processing - Flow Physics and Computation Lab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/biosensing-signal-processing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Biosensing &Signal Processing - Flow Physics and Computation Lab\" \/>\n<meta property=\"og:description\" content=\"Bio-sensing In order to measure the flow-induced sounds inside the canonical phantom of the thorax, we will use commercially available cardiac sound devices such as the Hewlett Packard HP\u201321050A Contact Sensor and the BIOPAC TSD\u2013108 Physiological Sounds Transducer (Contact Microphone). … Biosensing &Signal Processing Read More »\" \/>\n<meta property=\"og:url\" content=\"https:\/\/engineering.jhu.edu\/fsag\/nsf_sch_project_homepage\/biosensing-signal-processing\/\" \/>\n<meta property=\"og:site_name\" content=\"Flow Physics and Computation Lab\" \/>\n<meta property=\"article:modified_time\" content=\"2017-05-24T22:57:39+00:00\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/engineering.jhu.edu\\\/fsag\\\/nsf_sch_project_homepage\\\/biosensing-signal-processing\\\/\",\"url\":\"https:\\\/\\\/engineering.jhu.edu\\\/fsag\\\/nsf_sch_project_homepage\\\/biosensing-signal-processing\\\/\",\"name\":\"Biosensing &Signal Processing - 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