User's Manual

Enhanced Class 1 Bluetooth v2.1 Module
User’s Guide
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CONN-GUIDE-BT740_v0.2
14.5 HDP Profile (Health Device Profile)
UUID : 1400,1401,1402
14.5.1 Background
Health Device Profile (HDP) is available on the module in both Agent and Manager roles as defined by
the Continua Alliance (see www.continua.org). There are two aspects to HDP: one is the transport layer,
for which only Bluetooth is catered for by this module (although the Continua Alliance has also ratified
others, for example USB), and the other aspect is IEEE data encapsulation.
The Laird module provides a tightly coupled integrated solution for a Weigh Scale Specialization Agent.
More specializations are provided in the future as and when there is demand via a firmware update.
It is assumed that the reader is familiar with all the HDP and IEEE documentation and relevant guidelines
published by the Continua Alliance. For HDP, it is assumed that the reader has access to the
specification from the Bluetooth SIG. For IEEE it is assumed that the reader has access to the
IEEE11073-20601 Optimised Exchange Protocol specification and the device specializations
specifications 11073-10401 through to 10499. For the Weigher Scale specialization embedded in the
module, the specification is 11073-10415. Obtain the IEEE standards from their website
standards.ieee.org, and Bluetooth HDP specifications at www.bluetooth.org.
The IEEE data specialization along with the Bluetooth physical transport defined in the appropriate
specifications is very dry and difficult to understand, and it is pointless to reproduce that information here
verbatim. However, an attempt is made to describe it from the module’s usage point of view where the
module and the functionality it provides is treated in a black box manner.
14.5.2 IEEE ‘Black Box’ Model
In a traditional health related environment, typical actors and props are the patient, instruments that
measure appropriate parameters, health professionals, and the (manual and/or automatic) archiving of
the records.
Over the years there have been many suppliers of the “instruments that measure appropriate parameters”
who have all provided proprietary methods for getting the data stored in records.
It has always been the role of the health professionals to ‘transcribe’ the data from the various
instruments into the archive records. The manual process presents risks associated with errors in the
transcribing process and so manufacturers provided even more proprietary solutions to automating that
task.
The Continua Alliance came about to address that confused picture with guidelines and a certification
process to ensure that a consistent inter-operable picture emerges with regards to the “instruments that
measure appropriate parameters” and the “method for getting the data stored in records”.
The last thing the Continua Alliance would want to do is dictate how any individual instrument (referred to
as an Agent) is physically designed, as that is best left to the engineers who know how best to design
them. Instead, they have specified abstract data models for the various types of instruments, which they
refer to as Data Specializations, and how they shall convey the data to an entity called a ‘Manager’ that
can be used to consistently store the data in an archive.
Examples of data specialization abstract models exist for weigh scales, thermometers, glucose meters,
blood pressure meters, ECGs, and many more will become available as they progress through various
stages in appropriate working groups. Any Continua Alliance member is free to recommend creation of