Radiated EMC characterization of common recognition and identification platform for e-healthcare

Transcription

1 Radiated EMC characterization of common recognition and identification platform for e-healthcare Blaise Ravelo 1, Jorge Miranda 2, Jorge Cabral 2, Stefan Wagner 3, Christian F. Pedersen 3, Mukhtiar Memon 3, Morten Mathiesen 4 1 IRSEEM, EA ESIGELEC, France, ravelo@esigelec.fr 2 Centro Algoritmi, University of Minho, Portugal 3 Aarhus University, Denmark 4 Sekoia, Denmark

2 Consortium team No. Institution Status Country 1 Sekoia(Coordinator) SME Denmark 2 Romex Poland 3 Senioren Residenz Glücksburg Germany 4 University of Aarhus Academic Denmark 5 University of Minho Portugal 6 IRSEEM/ESIGELEC France 1 1

3 Outline Motivation Operation modes of the Common Recognition and Identification Platform(CRIP) CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 2

4 Outline Motivation OperationmodesoftheCRIP CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 3

5 Motivation (1/4) - Today, the wireless communication systems are used for many vital applications. As consequence of the networked society and an increased use of wireless electronical equipment emphasized by 5G PPP, common ambient assisted living home platform (CAALHP) for aged people was developed. - In 2010, it was reported by researchers from California Cancer Center that RFID readers help to enhance patientexperiences #. 5G PPP will drive the future networked society The innovative RFID solution allows to reduce stress and to improve facility efficiencies in the hospitals #. # 5 4

6 - Solution to avoid heavy bureaucracy: All patient data is kept in an electronic fileonthecentraldatabaseserver #. Motivation (2/4) - In the internal medicine departments of German hospitals, 29,000patientsdieeachyearasaresultofbeinggiventhewrong medication, according to a study made by the Medical University ofhanover ##. - Moreover, every year, the medication errors and wrong treatmentscostthehealthsystemseveralmilliondollars ###. # Healthcaretransformation, AsianHospital&HealthcareManagement,No.29,2014 ## T.Jell, Medicalerrors,RFIDtotherescue,SiemensBusinessServices,Germany,2005. ### 6 5

7 Motivation (3/4) - The patient treatment was considerably improved with the correct transfusioninexactlytheprescribedquantityafteruseofrfidreaders #. - Using mobile devices, the doctors can access easily all the medical data, such as case history, diagnoses, lab reports, allergy results, via the patientnumberandwlanatanytime ##. - Currently, initiatives to forecast for standardization of new telemedicine communicationsystemwerelaunched ###. - Need for the platform offers a friendly environment and guarantees an accurate management with less human errors for medical services in hospitalsandhomecare *. # D. Moncoqut, Amélioration d'efficacité énergétique des systèmes RFID médicaux Amélioration d efficacité énergétique des systèmes RFID médicaux (in French), Melexis, Accessed Sept ## RFID for medical devices and healthcare, Accessed ### * M. Saarijärvi, RFID: The medical miracle, RFID Arena, Dec. 2011, 7 6

8 Motivation (4/4) Facing up to such needs, the CareStore platform #,## is proposed in the frame of FP7-SME program. It is an user friendly online e- healthcare platform. Its innovative aspect lies particularly on: The easy deployment of applications and device drivers within the Healthcare domain The possibility to increase homecare efficiency, reduce costs and provide a higher degree of flexibility to users The improvement of living standards and independent life of the elderly population The integration of wireless communication interfaces for the data transmission And to forecast for standardization of new telemedicine communication system # ## M. Memon, S. R. Wagner, C. F. Pedersen, F. H. A. Beevi, F. O. Hansen, C. Nielsen and O. Langvad, Ambient assisted living healthcare frameworks, platforms, standards, and quality attributes, Sensors, vol. 14, pp ,

9 Outline Motivation OperationmodesoftheCRIP CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 8

10 CareStore platform(1/6): Outline - Innovative solution proposed in Carestore project ( FP7 CareStore no ) - The e-healthcare Platform is composed of cloud softdatabase, hardware common recognition device and open market place - Development of friendly and easy to use (8/10 satisfaction rate with a survey from tested aged people in senior residence of Glücksburg, Germany) 9 9

11 Operation modes of the CRIP (2/6) The HomeScreen application showing the installed applications as a collection of clicable icons, each of which will activate a care application, such as the Healthcare Data Viewer app The Healthcare Data Viewer application showing blood pressure data of the currently logged in user

12 Operation modes of the CRIP (3/6) Description of the device under test (DUT) = multifunction CRIP: - Registration and identification of the user RFID NFC cards or biometrics - Communication with medical devices via Bluetooth - Data identification and storage verification - IRSEEM role: Radiated EMC characterization of the CRIP with respect to R&TTE Directive

13 Operation modes of the CRIP (4/6) The CRIP hardware boards are mainly comprised of NFC-RFID (ISO/IEC-18092) and biometric fingerprint (ISO/IEC-19794) functions for the user identification combined with low energy BLE112 Bluetooth function 12 12

14 Operation modes of the CRIP (5/6) Illustration of the multifunction CRIP test experimental setup 1. The CRIP device can be assumed as a multi-function system. 2. Automatic NFC card reading during the test. 3. Bluetooth pin test function with a PC for the medical device detection and identification. 4. To visualize the CRIP status, an API monitoring PC was connected to the CRIP via Ethernet

15 Operation modes of the CRIP (6/6) Observable verification data WhentheCRIPison,this monitoring window shows the CRIP status and visualizes the identity of the users and also the detected devices in real-time. This basic verification was considered during the radiated immunity tests

16 Outline Motivation OperationmodesoftheCRIP CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 15

17 EMC emission test results (1/10) IRSEEM ½-anechoic chamber(9.7 m x 6.7 m x 5.4 m) Log-periodicand biconicalantennasplacedat the heighth = 1m to 4m in horizontal and vertical polarization 4.20m diameterrotatingplate (0 to 360 ) until a higher maximum signal is received The plateform supports up to 4000kg Doordimensions: 2.4m x 2.8m 15 16

18 EMC emission test results (2/10) Radiated EMC emission test (Std EN55022): Overview of the performed radiated emission test 16 17

19 EMC emission test results (3/10) Radiated EMC emission test (Std EN55022): experimental setup for the emission test - In the ½ anechoic room, the DUT was placed on the 360 turn table at the standardized distance for the emission antenna. Thesystemwasmovedinordertocheckthemaximumpeakof theemissioninalldirectionfrom30mhzto1ghz.tocoverthis wide frequency range two different antennas were used. - Theoverallsysteminthe½anechoicroomwascontrolledfrom outside. Then, the measured data are stored via the acquisition andcalibrationtoolaccsys-emc TM fromhamerarf. - To check, the functionality of the overall system, the experimental setup was permanently visualized with a survey camera

20 EMC emission test results (4/10) Radiated EMC emission test (Std EN55022): experimental setup for the emission test with the two types of antennas assigned as the radiated field receiver

21 EMC emission test results (5/10) Radiated EMC emission test (Std EN55022): experimental setup for the emission test with the two types of test antennas assigned as the radiated field receiver

22 EMC emission test results (6/10) The ½ anechoic room was annexed with the room test control where the measurement parameters can be set. In this room also the CRIP status can be visualized with the API test monitoring PC

23 DUT verification mode: The results of radiated EMC emission test with CRIP and API control PC connected via Ethernet. It was found that the CRIP box emission exceed the expected limitations for both the measurement in horizontal and vertical polarizations at certain frequencies. EMC emission test results (7/10) E h (dbµv/m) E v (dbµv/m) Frequency (MHz) (a) (b) Rx E-field for emission test in horizontal polarization Rx E-field for emission test in vertical polarization Frequency (MHz) 21 22

24 Certain EMI peaks exceeding the conformity were found at about 40MHz and 550MHz. The diagnosis needs to be done on the implementation of the PCB CPU. The elimination of those excessive peaks are in diagnosis for the CRIP second prototype. E h (dbµv/m) E v (dbµv/m) (a) Rx E-field for emission test in horizontal polarization Frequency (MHz) (b) EMC emission test results (8/10) Rx E-field for emission test in vertical polarization Frequency (MHz) 22 23

25 EMC emission test results (9/10) Correction of the radiated emission with the 2 nd prototypeofthecrip # h a (m ) Frequency (GHz) E h (db µ V/m ) h a (m ) Frequency (GHz) E v (db µ V/m ) θ ( ) Frequency (GHz) E h (db µ V/m ) θ ( ) Frequency (GHz) E v (db µ V/m ) #J. Miranda, J. Cabral, B. Ravelo, S. Wagner, C. F. Pedersen, M. Memon and M. Mathiesen, Wireless Authentication Platform for Healthcare Applications, IEEE Int. Wireless Symp. (IWS 2015), Shenzhen, China, 30 Mar. -1 Apr

26 Correction of the radiated emission with the 2 nd prototypeofthecrip # EMC emission test results (10/10) E H-polarisation (dbµv/m) (a) Frequency (GHz) E V-polarisation (dbµv/m) (b) Frequency (GHz) #J. Miranda, J. Cabral, B. Ravelo, S. Wagner, C. F. Pedersen, M. Memon and M. Mathiesen, Wireless Authentication Platform for Healthcare Applications, IEEE Int. Wireless Symp. (IWS 2015), Shenzhen, China, 30 Mar. -1 Apr

27 Outline Motivation OperationmodesoftheCRIP CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 26

28 EMC immunity test results (1/7) Radiated EMC immunity test (Std EN ): Overview of the performed CRIP radiated immunity test 25 27

29 EMC immunity test results (2/7) DUT verification mode: Two types of aggressor antennas and E-field sensor were used. The CRIP status before, during and after the immunity test were checked regularly with the presence of another PC via Bluetooth test pin in real-time

30 EMC immunity test results (3/7) DUT verification mode: The pin test PC was placed on the ground in order to minimize the EMI susceptible to disturb the measurements. The agressor antennas transmitting 3m were oriented in successively in both horizontal and vertical polarizations in the operating frequency bands

31 EMC immunity test results (4/7) EN Class B test: Transmission power in horizontal polarization was set from the control room in order to meet the requirement from 80MHz to 2.7GHz. The control and calibration of the transmitted signal were made with the calibration tool ACCSYS-EMC TM from HAMERA RF for the two transmitting antennas used during the tests. P Tx (dbm) Frequency (MHz) 28 30

32 EMC immunity test results (5/7) EN Class B test: Transmission power in horizontal polarization was set from the control room in order to meet the requirement from 80MHz to 2.7GHz. 12 The control and calibration of 10 the transmitted 8 signal were made with the 6 calibration tool 4 ACCSYS-EMC TM from HAMERA 2 RF for the two 0 transmitting antennas used Frequency (MHz) during the tests. 29 E h (V/m) 31

33 EMC immunity test results (6/7) DUT verification mode in horizontal polarization: With the API test PC, the CRIP status was monitored and checked regularly. It was found that the CRIP operates correctly during and after the EM radiation immunity test and respect the EN Class B conformity

34 EMC immunity test results (7/7) CRIP status after two days of radiated EM aggression: It was checked that the CRIP operates correctly as can be observed here below

35 Outline Motivation OperationmodesoftheCRIP CRIP device functionning principle Operation verification EMCtestresults Radiated EMC emission test(std EN55022 Class B) Description of the experimental setup Reported results Radiated EMC immunity test(std EN Class B) Description of the experimental setup Reported results Conclusion 34

36 Conclusion Carestore platform for future Medecine 3.0 Operation modes of the multifunction CRIP All electronical equipment subject to the to R&TTE EU Directive must comply fully in order to be legally marketable in the EU region EMC qualification testing Radiated EMC emission test(std EN55022 Class B) Radiated EMC immunity test(std EN Class B) Application of the CareStore platform for the assistant living in senior houses is in the market 32 35

37 Question? Thank you for your kind attention! 36