ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Biomedical sensorsOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsContd… Major applicationsIssues in developing a biomedical sensorBiomedical Sensor technologySimplified Three-electrode sensorActual Sensor diagramSensorBiomedical sensor using force sensorsSensor diagramLatest developmentsContd…Mutlielement force sensorSlide 17Slide 18Schematic View of multi element sensorUse of electronic circuitsSlide 21ConclusionECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Biomedical sensorsPrepared by:Sreenivas Reddy. PeddiDept. of Electrical and Computer Engineering Utah State UniversityE: ; T: (435)797-; F: (435)797-3054 (ECE Dept.)W: http://www.ece.usu.edu3/10/200601/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Major applications–Issues –Biomedical sensor technology–Sensor examples–Major specifications–Conclusion01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•[1] http://www.ginerinc.com/biological_sensors.htm•[2] http://newslab.cs.wayne.edu/mobicom-camera-ready.pdf•[3] M. Esashi and T. matsuo, “Solid State microsensors”, Med. Prog. Tech., vol. 12, pp. 145-157, 1987•[4] E. B. Makavos, A. Lysikiewicz, C. C. Liu, and M. R. Neuman, “A cyclic voltammetric pH sensor for animal tissues”, in Proc. 40th Annual Conf. on Engineering in Medicine and Biology, p. 172, 1987•[5] Biomedical sensors in interventional systems: present problems and future strategiesNeuman, M.R.; Liu, C.-C.;Proceedings of the IEEEVolume 76, Issue 9, Sept. 1988 Page(s):1218 - 122501/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •Thin- and thick-film structures for miniature biomedical sensorsNeuman, M.R.; Lindner, E.; Cristalli, A.; Gyurcsanyi, R.E.; Cheema, K.; Pandolf, M.;Microtechnologies in Medicine and Biology, 1st Annual International, Conference On. 200012-14 Oct. 2000 Page(s):211 - 215 •Microfabricated sensors for biomedical applicationsNeuman, M.R.;Engineering in Medicine and Biology Society, 2004. EMBC 2004. Conference Proceedings. 26th Annual International Conference of theVolume 2, 2004 Page(s):5218 Vol.701/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Medical Applications– Suitable for analyzing blood samples using diagnostic sensors– monitoring of various medical conditions– Glucose level monitoring•Wireless solutions for human-implanted sensors•Military combat operations – can track the soldier movements01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Contd… Major applications •Civilian applications–Temperature change notification–Pollution detection–Detecting changes in exhaustive systems of the vehicles01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Issues in developing a biomedical sensor•Configuration•Supply of power•Individual sensing of variables•Processing of different signals•Interconnection to the other modules in the system•Manufacturing01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Biomedical Sensor technology•Use of microelectronics– Electronic components are incorporated into sensors for signal processing and conversion•Use of Optical devices–calorimetry, spectrophotometry principles are used to develop biomedical sensors based on optoelectronic systems01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Simplified Three-electrode sensor[5]01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Actual Sensor diagram[5]01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Sensor •Consists of an aluminum substrate–Gold and silver films are deposited on the substrate•Surface of silver film electro chemically oxidised–Serves as a reference electrode•Two gold films are present–Serve as indicating and counter electrodes•An array of 21 square electrodes are produced •These geometry are made possible by the microelectronic technology01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Biomedical sensor using force sensors•Used to measure force required for grasping at the thumbs and finger tips•Sensor based upon variable capacitance priniciple•Used in spinal cord injury patients•Sensor used as a feedback element in a closed loop control system.01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Sensor diagram•Consists of: –an alumina substrate–parallel plate capacitor–An isolation amplifier•Complete structure is surrounded by a silicone elastometer–so the force distributes across the membrane thus increasing the capacitance[5]01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14Latest developments•Three dimensional structures•Planar structures •Resulting in fabrication of miniature conductor based sensors –To measure pressure–To measure acceleration–To measure electrical signals01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Contd…•[1] uses cyclic voltammetry technique– to sense hydrogen ion activity and oxygen tension in the same electrochemical cell•Different points on the voltammogram are looked upon for a current-voltage characteristic•And identify the sensitive points on the curve for hydrogen ion activity or oxygen tension01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Mutlielement force sensor[5]01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17•Cyclic Voltammogram for the electrodes placed inside a rabbit skeletal muscle.[5]01/13/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Contd…•Consists of 8X8 2mm square parallel plate capacitors, also a dielectric is present•Dielectric undergoes compression as force is applied to the plates which increases the capacitance•The capacitance of each element of the array determines the force applied to each element•The
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