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Phonegap Healthcare Adapter Bluetooth Spec

Revision as of 16:26, 17 August 2012 by Cwdesautels (talk | contribs)


NexJ Medical Peripheral Mobile Adapter Will be designed to enable NexJ's Mobile Healthcare solutions to interact with Bluetooth peripherals.

Bluetooth Details

Bluetooth Profile

Serial Port Profile (SPP).

Bluetooth protocols

RFCOMM and Service Discovery protocols.

Pairing

Secure Simple Pairing.

Data transmission

Measurement date/time, measurement values, Bluetooth Id of remote unit, mode, and serial number of A&D PBT Series.

Master devices

A&D Bluetooth® devices PBT series, including blood pressure meter, blood glucose meter, and weight scale.

Slave devices/Access Points

mobile devices, including iOS and Android smartphones/tablets.

Process Description of Bluetooth Communication

Process Description for unpaired devices

  • Enable Bluetooth on the mobile device and set the device to discoverable mode (as slave device).
  • Make a measurement on selected A&D Bluetooth device such as weight scale. Upon the completion of measurement, the device (as master device) searches slave devices and initials Bluetooth communication.
  • The mobile device receives the signal of the A&D Bluetooth device and prompts user to enter a PIN/passkey.
  • Once the PIN is matched, the A&D Bluetooth device sends the measurement data to the mobile device using the specified format such as weight scale packet followed by the Confirmation Packet Response.
  • Upon the success of connection, the two devices are paired. Then PIN code is no longer needed afterward.

Process Description for paired devices

  • Enable Bluetooth on the mobile device and set the device to discoverable mode.
  • Make a measurement on selected A&D Bluetooth device. Upon the completion of measurement, the A&D Bluetooth device checks its memory for previously paired address of mobile device and directly sends the measurement data to the mobile device using the specified format, followed by the Confirmation Packet Response.

Communication Packet

Communication packet consists of two sections: the dataheader section and the data section.

Header Section

Offset Type Field
0 Integer (2 byte) Packet type (always equal to 2)
2 Integer (4 byte) Packet length (exclusive of 60 byte of data header)
6 Integer (2 byte) Device type – 767 or 02FF (Hex) for UA-767PBT, 321 or 0141 (Hex) for UC-321PBT
8 Byte Flag
9 Integer (2 byte) Year of measurement
11 Byte Month of measurement
12 Byte Day of measurement
13 Byte Hour of measurement
14 Byte Minute of measurement
15 Byte Second of measurement
16 Integer (2 byte) Year of transmission
18 Byte Month of transmission
19 Byte Day of transmission
20 Byte Hour of transmission
21 Byte Minute of transmission
22 Byte Second of transmission
23 Byte (6) Bluetooth ID of remote unit
29 Byte (6) Bluetooth ID of access point (null)
35 Byte (12) Serial Number of A&D PBT Series
47 Byte (10) Reserved
57 Byte Device Battery Status (Note 1)
58 Byte Reserved
59 Byte Device Firmware Revision and Hardware Revision (Note 2)

Data Section

Blood Pressure Device Specification
Offset Type Field
0-1 Printable Hex Valid (= “80”) Non-“80” means invalid BP measurement.
2-3 Printable Hex Systolic – Diastolic
4-5 Printable Hex Diastolic
6-7 Printable Hex Pulse rate per minute
8-9 Printable Hex Mean Arterial Pressure (MAP)
Glucose Device Specification

unknown

Weight Scale Specification

Kilogram Mode

S T , + 1 2 5 . 1 0 k g <CR> <LF>

Pound Mode

S T , + 0 4 0 5 . 2 l b <CR> <LF>