Mobile Sensoren für Personal Health Monitoring Systeme

FZI Forschungszentrum Informatik an der Universität Karlsruhe Mobile Sensoren für Personal Health Monitoring Systeme Stefan Hey 1 W. Stork Mission of the FZI Requests Economy Reconnaissance FZI Evaluation Spread Case studies Analysis Prototypes Produktevaluation Advice Methods System engineering Seminars Training 2 Knowledge University W. Stork Retrieval Hauptanwendungsfelder der Forschung am FZI 3 W. Stork Project VitalPhone for Home Monitoring Arzt- / persönliche kabellose Pflegedienst- VitalPhone- VitalPhones, Medibus Vitalsensoren Monitor Basisstation optional am Menschen mobil mit Kamera Handy ISDN Notarzt ISDN-Telefon + PC-Funktion (oder vorhandener Heim-PC mit ISDN- Erweiterung) 4 W. Stork Proposal of the University of Karlsruhe in the new media program of Baden-Württemberg 1996 Basic concept of the Personal Health-Monitoring system (PHMON) 5 W. Stork Tele medical system with wireless interconnected vital sensors Vernetzte Vitalsensoren Hardware Universelle Plattform Thermometer Zur Übertragung von Biosignalen Blutdruckmesse r Peak-Flowmeter The interconnection of new sensors with Waage Übertragung der Daten per SMS 6 W. Stork Pulsoximeter 3 Kanal EKG Data integration: Electronic Patient Record (EPR) • Web based Patient data in the Intranet Clinics – Storage of patient and vital data Patient, – Viewing via browser technology Doctor HL7 – Security mechanisms • Authentication HTTP • Encoding EPR HL7, VCS, Web services 7 Practice - W. Stork Software ECG T-shirt with BlueTooth communication Electrodes Elektroden Conducting Textiles Leiterbahne n Snap Fasteners for the Electronics 8 W. Stork • Flexible PCB plates for Bluetooth-ECG • Textile electrodes for permanent use New blood pressure sensor • Continuous, noninvasive blood pressure measurement • Calculation of the blood pressure from – Blood flow – Pulse wave velocity – Individual calibration EKG • Measurement with simultaneous ECG and 9 Laser-Doppler-flow sensor River pulse W. Stork S(f) / a.u. 150 100 0 50 50 v / mm/s 100 f / kHz Prototype system • Wearable system – Wireless sensor with Bluetooth technology – Measurement at the finger tip or at the ear – Little movement restriction • Continuous – Battery operating time currently 8 h 10 W. Stork Studies in university hospital Erlangen • Comparison with invasive reference blood pressure • 82 test persons • Entire measurement time ca. 100h • Results: – Standard deviation: σØ,sys = 5,8 mmHg ↔ 11,8 mmHg σØ,dia = 2,3 mmHg 11 ↔ 9,5 mmHg W. Stork – Korrelation: RØ,sys = 0,90 ↔ 0,74 RØ,dia = 0,81 ↔ 0,67 Types of flow sensors Finger clip sensor Ear sensor Sensor as decoration (commercial case). (future) 12 W. Stork Activity monitoring with mobile acceleration sensor 13 W. Stork Inertial sensor for recording the human power consumption and movement habits Activity Monitoring: Measurements stand walk run • At rest: X: 0g, Y: -1g, Z:0g • walk 14 – little oscillation W. Stork • run – oscillation – bigger amplitude / higher frequency on Y-axis Simple respiration sensor as activity indicator • Textile ribbons with length dependent conductivity sewn on a T-Shirt • very cheap • information about respiration frequency 15 W. Stork Respirationsensor Applications in Tele-Disease-Management GSM, Electronic GPRS, Health Record ECG Body Area Diary Network 16 W. Stork Standard blood Patient pressure sensor Personal Health Assistant