Système électronique de monitoring de d données pour sportifs de haut ‐ niveau é if d h i (Etude de cas pour la Patrouille des Glaciers) ( p ) Romain Farkas, LEG ‐ EPFL Romain Farkas, LEG EPFL 12/09/2007
Architecture / Goals / • What are we looking for ? – Fast prototyping for this « proof of concept » project. – An all ‐ in ‐ one GPS/GPRS/DSP solution – Light ‐ weight – Low ‐ power – Flexibility • Easily interface with all kinds of sensors (analog, digital, …) • Evolutivity – Embedded intelligence on ‐ board for power management and other projects. 12/09/2007
Roadmap • September ‐ October 2007 – Prototyping, laboratory work on DSB and sensors • October ‐ November 2007 O t b N b 2007 – Prototyping continues, realization & debug of the first boards • December January 2007 • December ‐ January 2007 – First tests on field – Reporting and presentation to Prof. Kayal epo t g a d p ese tat o to o . aya • January ‐ April 2007 – Testing on field – Prototyping continues and realization of more systems if needed 12/09/2007
Architecture / General / Device on subject Sensors SPI SSCu Sensor Signal Conditionning Unit Servers Servers GSATu Sensors Post ‐ processing, GPRS I2C GPS Signal Analyzer and SSCu / Visualisation, … EDGE Sensor Signal Transmitter Unit Conditionning Unit Sensors 1 ‐ wire SSCu SSCu Sensor Signal Conditionning Unit 12/09/2007 PolyPDG/RF
Architecture / General / • GSATu (GPS Signal Analyzer and Transmitter Unit) GSAT (GPS Si l A l d T i U i ) – Motherboard (battery, power supply, interfaces, antennas, SIM card reader display future extension boards) SIM card reader, display, future extension boards) – Siemens XT65/XT75 (DSP, RAM, Flash, GPS receiver, GPRS/EDGE modem, battery charger, interfaces) / , y g , ) • SSCu (Sensor Signal Conditionner Unit) – Some sensors need signal conditionning on a dedicated So e se so s eed s g a co d t o g o a ded cated PCB near the Sensor Unit • Su (Sensor Unit) – The sensor itselfs (oxymeter, metabolic cart, temperature sensor, pressure gauge, etc.) 12/09/2007
Architecture / GSAT Unit / Goal: to achieve a small ‐ footprint, low ‐ power device Display Interface Board LCD or LED 1 ‐ wire USB2 SPI I2C SIM card Power Li ‐ Po supply Battery Siemens XT65/XT75 Module Antennas’ Board ARM core RAM AUDIO I/O based A/D GPS GSM FLASH FLASH GPIO GPIO Blackfin DSP antenna antenna ADC PWM I2C SPI Atmel GPRS GPS EDGE Motherboard 12/09/2007
Architecture / Siemens XT65/75 module / / • Blackfin DSP architecture, 400 kB (RAM), 1.2 MB (Flash) • Atmel GPS (Antaris4 u ‐ blox based) (DGPS, SBAS, WAAS, EGNOS, MSAS, A ‐ GPS) • Quad ‐ Band GSM, GPRS class 12 (XT65), EDGE (XT75), voice & data features • < 10g, 34x59x3.5mm , ‐ 30° C to +75° C • Java software platform • Power consumption: sleep mode 4.5 mA, power down 50 uA, GPRS class 12 (average) 600 mA. • Supply voltage 3.3V…4.5V • Has USB2.0 / GPIO / Analog IO / I2C / SPI / etc. interfaces • No SIM card reader on board ? • No antenna on board (TBD: patch, monopole antenna) Original size Original size https://pia.khe.siemens.com/index.aspx?nr=14197 12/09/2007
Architecture / Development Kits / p DSB75 Development Board Price: 1200 CHF or 150 CHF per month Price: 1200 CHF or 150 CHF per month 1 week buy, 2 ‐ 3 days rent Siemens XT ‐ 65 Module Siemens XT ‐ 75 Module CHF 162 per module 2 ‐ 3 days Nonin Oximeter OEM D Development Kit l t Kit ~ 300 USD Quote in progress 12/09/2007
Selected sensors (3 ‐ 4 months) ( ) Goal: demonstrate that various sensor types can be • interfaced to the whole system easily interfaced to the whole system easily. SpO2, Pulse : oxymeter (TBD) • SPI interface (Nonin ) • VO2, VO2max, cardio ‐ pulmonary : metabolic cart (TBD) VO2, VO2max, cardio pulmonary : metabolic cart (TBD) • RS/ 232 interface (Cosmed K4b2, Cortex MetaMax) • Temperature : temperature sensor (TBD) • 1 ‐ wire interface (proof of concept) (p p ) • Latitude, Longitude, Elevation : GPS • Included in XT65/75 module • More sensors… (6 months) Non invasive blood pressure (NIBP) sensors • They consume a lot of power (additional batteries) • Bio ‐ impedance research for dehydratation problems • Force impactor sensors • 12/09/2007
Budget proposal for PolyPDG (up to november) g p p y ( p ) Development Kit for GPS/GPRS modules: 1.2 kCHF • Modules : 162 CHF per item assuming 2 modules Modules : 162 CHF per item, assuming 2 modules • Development Kit for Oximeter : 300 ‐ 400 USD • Antennas : 100 ‐ 200 USD (TBD) • SIM card: 40 CHF SIM card: 40 CHF • GPRS traffic: 50 CHF • Batteries: 400 CHF • Total: 2000 ‐ 2500 CHF 12/09/2007
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