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Case Study – Patient Monitoring Hub

Patient Monitoring Hub
A portable device that captures and transmits secure medical data between the patient, doctor and hospital.

Customer Requirement
Customer requires software / firmware development and testing support including the support for agency certifications and factory test automation.

Client Profile
US based healthcare device Company

Accel Solutions:

  • The simulator provides two key DICOM services namely, modality work list management service and storage service.
  • Interface testing and automation in prototype level
  • Wi-Fi, BT and NFC, 3G modules driver integration and testing
  • Testing app development and safety testing, FCC and CE submission support
  • Unit testing, integration and system level testing
  • Factory automation setup development

PMH Wi-Fi Integration and Testing

  • Client Mode and Access Point Mode
  • Different wireless bands 802.11 a/b/g/n
  • Performance Testing: Rate vs. Range Testing, Sensitivity, Maximum input level
  • Security Testing: WPA, WPA2, WEP64 , WEP128
  • Encryption Testing: Open, Wired equivalent privacy (WEP ), Advanced Encryption Standard (AES ), Temporal Key Integrity Protocol (TKIP), Mixed Mode
  • Authentication Methods: Open, Wired equivalent Privacy (WEP), Pre-shared key (PSK), 802.1X/EAP
  • WPS Method of connection

PMH NFC Integration and Testing

  • The tags tested include:
    • ISO/IEC 14443-3 Type A and B tags
    • ISO/IEC 15693 and ISO/IEC 18000-3M1 tags
    • NFC Forum tags: Types 1, 2, 3 and 4
  • The tests done include:
    • Interface testing at the factory .
    • Detection test to verify that the Unit can detect the NFC tags.
    • Verify that the unit can read the NFC tag ID.
    • Transmit data test to verify that the unit can write data to memory of the NFC tags.
    • Receive data test to verify that the unit can read the data on memory of the NFC tags.

PMH BT Integration and Testing

  • Using the BT stack Bluez:

    Tested and verified the working of PMH against Serial Port Profile (SPP). SPP was tested against Mobile and PC.

    • Adding the FCC test functionalities
    • BT-ON /OFF
    • BT-TX
    • BT- RX
    • BT-Interface
  • Using the third party BT stack:
    • Verify the Classic and Low Energy BT profiles and making the necessary FCC testing functionalities.
    • Classic Profiles:- Serial Port Profile ( SPP ) , Health Device Profile ( HDP) , Human Interface Profile ( HID )
    • Low Energy Profiles :- Generic Attribute Profile ( GATT) , Serial Port Profile for Low Energy ( SPPLE) , Blood Pressure Profile ( BLP) , Glucose Profile ( GLP) , Health Thermometer Profile ( HTP) , Heart Rate Profile ( HRP)
    • The Profiles were tested using the Bluetooth Profile Tuning Suite ( PTS) from Bluetooth SIG .

PMH FCC Testing

Radiated Emission Testing

  • Thermal chamber
  • Ferrite Chamber

Transmit at maximum power on different bands through each channels .Look at spectrum analyzer for RF wave characteristics

  • Power , Band , Frequency with respect to channel
  • No spurs outside the band
  • Modulation

Technologies Used

  • Embedded Linux, Ubuntu in Freescale iM6q based solution
  • Ethernet
  • Wi-fi
  • BT
  • NFC
  • 3G
  • Smart RF