ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors Topic: Mobile Sensor TechnologiesOutlineReference listTo probe furtherMajor applicationsBasic Working PrincipalTypical Sample ConfigurationMajor SpecificationsPower IssuesGPS – Size and PerforanceMemory for Data StorageMemory for Data Storage IISensor TechnologiesSensor Technologies IISensor Technologies IIISensor Technologies IVSensor Technologies VSensor Technologies VISensor Technologies VIILimitationsECE5320 MechatronicsAssignment#01: Literature Survey on Sensors Assignment#01: Literature Survey on Sensors Topic: Mobile Sensor TechnologiesPrepared by: Cal CoopmansDept. of Electrical and Computer Engineering Utah State UniversityE: [email protected]; T: (435)797-7510;F: (435)797-3054 (ECE Dept.)3/7/200801/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Major applications–Basic working principle –A typical sample configuration in application–Major specifications–Power Issues–GPS Size and Performance–Memory for Data Storage (I, II)–Sensor Technologies (I – VI)–Limitations01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•http://www.fisinc.co.jp/•http://datasheets.maxim-ic.com/en/ds/MAX6612-MAX6612MXK.pdf•http://computers.pricegrabber.com/flash-memory/p/152/form_keyword=2gb+microsd/rd=1/st=query/•http://en.wikipedia.org/wiki/MRAM•http://en.wikipedia.org/wiki/Phase-change_memory01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To probe further •http://www.fisinc.co.jp/•http://www.us.design-reuse.com/news/20/philips-fully-integrated-telematics-processor.html•http://www.magneticsensors.com•http://en.wikipedia.org/wiki/Lipoly•http://www.smartmobs.com/•Google “reality mining”01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •Mobilizing sensors can capture new data in new ways•Given a fleet of vehicles, scientific data about the fleet’s entire range over time can be collected•Small sensors can be networked wirelessly to behave in a swarm•Sensor packs can be made small enough to make an Unmanned Ariel Vehicle (UAV) a mobile weather station, for instance01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Basic Working Principal1. Take any sensor task traditionally wired, large, heavy and/or expensive2. Make this sensor wireless, smaller, lighter and/or cheaperFrom http://www.habmigern2003.info/suggestions/IR/Infrared-sensors.htmlhttp://www.gas-measuring-instrument.com/nitric-oxide-sensor-41-p.asp01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7Typical Sample Configuration•SEAL is a project of CSOIS here at Utah State•It is a mobile sensor platform and datalogger•It targets 8+ hour runtimes and 2+GB data files, depending on sensor power needs and configuration•A WiFi port allows mobile data for many configurations (access point and ad-hoc), and possibly a GPRS mobile data connection01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8Major Specifications•Much like any project, specifications and their drivers are specific to application, but in general:–What are you sensing? This will determine power usage–Runtime of the system is then paramount–Size of logged data; make sure you have enough storage–Temperature conditions during the sensing can vary; will your sensor still function over the whole range?01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Power Issues•Driven by the cellular phone handset market:–Power density for small electronics continues to increase –Power supplies and electronics efficiencies also are improving•Li-Poly and Li-Ion batteries have established themselves as the current mobile supply leader but there are other chemistries and techniques on the way–Aerogel (and other) Supercapacitors –EESTOR, Inc. ceramic batteries–Nanotubes in everything•Higher power sensors such as heated gas sensors are now possible to mobilize (see next slides)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10GPS – Size and Perforance•GPS is integral to mobile sensors–You need ZYXT to make a 3d map of sensor data!•GPS is rapidly becoming commonplace in consumer hardware–Phillips SAF3100•MIPS3000-based processor core•Integrated 12-channel GPS receiver•14-bit A/D converter•GPS modules such as from uBlox (LEA-5H) offer cutting-edge performance for a low price01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Memory for Data Storage•In the past, dataloggers of all kinds used slow, sensitive EEPROM (and other) memory.•Currently, flash memory is the gold standard for non-volatile low-power storage•2GB micro-SD price (from pricegrabber.com: $9.95)•This memory is relatively simple to interface with and is getter faster/cheaper every day01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Memory for Data Storage II•Looking into the future – flash memory will continue to drop in price and gain functionality•However, other technologies are coming soon to take care of low-end space and power requirements–MRAM, magnetic RAM, is non-volitile for as many as 40 years and has few to no physical requirements (high energy particle susceptibility in space, for instance)–PRAM, phase-change RAM, is even better and even further off01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13Sensor Technologies•Many sensor technologies for mobile-scale devices exist•MEMS sensors–Magnetic (Honeywell Magneoresistive)•Magnetic compassing and magnetometery•Dead reckoning modulesPicture from: http://www.magneticsensors.com/products.html01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14Sensor Technologies II•MEMS Accelerometers–As shown by Apple with the iPhone, there are many interesting uses for small, low-power accelerometer packages–ST Microdevices LIS302dl is used in the iPhone•3-axis, 3x5x0.9mm•<1mW power consumption•I2C interface; no A/D needed–Freescale, Analog Devices,Hitachi, etc. all make MEMS accelerometers01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Sensor Technologies III•Air quality monitoring
View Full Document
Unlocking...