Zephyr Technology BH3 PHYSIOLOGICAL MONITORING DEVICE WITH 802.15.4 AND BLUETOOTH TRANSMITTERS User Manual

Zephyr Technology Corporation PHYSIOLOGICAL MONITORING DEVICE WITH 802.15.4 AND BLUETOOTH TRANSMITTERS

User Manual

BioHarness 3.0
User Manual
BioHarness 3.0 User Manual
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For support or further information on this product contact:
Zephyr Technology
1 Annapolis St., Suite 200, Annapolis, MD 21401, USA
Phone: +1 (443) 569 3603
Fax: +1 (443) 926 9402
Web: www.zephyranywhere.com
Email: support@zephyranywhere.com
sales@zephyranywhere.com
This document may be subject to change without notice.
Version
Description
2011-07-27
Initial Release
2012-03-13
Various updates to specification and completion of previous omissions
2012-04-13
Add EC38 Type 3 compliance, caution on infant use
2012-06-26
Update hardware and firmware part nos. Add 802.15.4 specifications
2012-07-03
Add new FCC ID, update battery life, label
2012-07-31
Update label, intended use
2012-08-20
Correct erroneous IC ID
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Contents
1. GENERAL INFORMATION ................................................................................................................................5
1.1. Documentation ................................................................................................................................................6
1.2. Warning and Safety Notices ...........................................................................................................................7
1.3. Intended Use ..................................................................................................................................................9
1.4. Contraindications ......................................................................................................................................... 10
1.5. Table of Symbols ......................................................................................................................................... 10
2. TECHNICAL DESCRIPTION ........................................................................................................................... 11
2.1. Model Identification ...................................................................................................................................... 11
2.2. System Overview ......................................................................................................................................... 12
2.2.1. Monitoring Mode .......................................................................................................................... 12
2.2.2. Charging and Configuration Mode ............................................................................................... 13
2.3. System Components ................................................................................................................................... 15
2.3.1. BioHarness Module ..................................................................................................................... 15
2.3.2. BioHarness Chest Strap .............................................................................................................. 16
2.3.3. BioHarness Charging and Configuration Cradle ......................................................................... 18
2.3.4. BioHarness Charge/Configuration Lead ...................................................................................... 18
2.4. Software Utilities .......................................................................................................................................... 19
2.4.1. Bluetooth Test Application ........................................................................................................... 19
2.4.2. Zephyr Config Tool ...................................................................................................................... 20
2.4.3. BioHarness Log Downloader ....................................................................................................... 20
3. OPERATION .................................................................................................................................................... 21
3.1. Overview ...................................................................................................................................................... 21
3.2. Initial Inspection ........................................................................................................................................... 22
3.3. Charge Battery ............................................................................................................................................. 23
3.4. Check BioHarness Module Configuration.................................................................................................... 24
3.4.1. Set Transmit Mode ...................................................................................................................... 24
3.4.2. Bluetooth ...................................................................................................................................... 25
3.4.3. 802.15.4 (ECHO) ......................................................................................................................... 26
3.4.4. Set Logging Mode ........................................................................................................................ 26
3.4.5. Subject ROG Thresholds ............................................................................................................. 27
3.4.6. ROG Threshold Default Values ................................................................................................... 28
3.5. Confirm Subject State .................................................................................................................................. 29
3.6. Fit BioHarness Module to Strap ................................................................................................................... 30
3.7. Fit Strap to Subject ...................................................................................................................................... 31
3.8. Power On/Off BioHarness Module .............................................................................................................. 32
3.8.1. Data Stabilisation Times .............................................................................................................. 32
3.8.2. Device LED Behaviour ................................................................................................................. 33
3.9. Transmitted Data ......................................................................................................................................... 34
3.10. Logged Data ........................................................................................................................................ 34
4. INTERPRETATION OF DATA ......................................................................................................................... 35
4.1. Heart Rate ................................................................................................................................................... 35
4.2. Breathing Rate ............................................................................................................................................. 35
4.3. Skin Temperature ........................................................................................................................................ 36
4.4. Activity Level ................................................................................................................................................ 36
5. MAINTENANCE & CLEANING ........................................................................................................................ 37
5.1. BioHarness Module ..................................................................................................................................... 37
5.1.1. Battery Lifetime and Replacement .............................................................................................. 37
5.2. BioHarness Strap ......................................................................................................................................... 38
6. ACCESSORIES AND REPLACEMENT COMPONENTS ............................................................................... 39
7. TECHNICAL SPECIFICATIONS ..................................................................................................................... 40
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7.1. Electrical ...................................................................................................................................................... 40
7.2. General & Physiological............................................................................................................................... 40
7.3. RF ................................................................................................................................................................ 43
7.3.1. Bluetooth ...................................................................................................................................... 43
7.3.2. 802.15.4 ....................................................................................................................................... 43
7.4. Compliance .................................................................................................................................................. 44
7.5. Environmental .............................................................................................................................................. 44
7.6. Mechanical ................................................................................................................................................... 45
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1. General Information
This documentation contains instructions for safe use, and a technical description of the BioHarness 3.0 device.
Operators of the device should read this manual in its entirety prior to use.
The components referred to in this manual are:
Component
Part/Product Number
BioHarness Bluetooth Module (Electronics sensor)
9800.0189
BioHarness Bluetooth Firmware Version
1.3.12.0
BioHarness Chest Strap (Sizes Small XS-M, Large M-XL)
9600.0189, 9600.0190
BioHarness Shoulder straps (optional – one size adjustable)
9600.0117
BioHarness Charge Cradle & USB Cable (single device)
9600.0257
CLASSIFICATIONS
EC38 Type: Type 3
The BioHarness Module is internally powered when in patient monitoring mode
IP55 rated against ingress (should not be used for swimming or other water-based activities)
Does not need to be sterilized as part of normal operations
Will be used for non-continuous operation
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1.1. Documentation
This device is supplied as a component of the Zephyr Bluetooth BioHarness Software Developer’s Kit (SDK). The
SDK contains this guide, as well as additional documentation:
Document
Part Number
BioHarness BT Comms Link Specification [1]
9700.0110
BioHarness 3 Logging System Interface [2]
9700.0158
BioHarness Bluetooth Developer Kit User
Manual [3]
9700.0026
BioHarness Bluetooth API Guide [4]
9700.0027
BioHarness 3 Data Sheet [5]
9700.0136
BioHarness Side Strap Data Sheet [6]
9700.0024
BioHarness BT Android API User Guide [7]
9700.0150
BioHarness MATLAB Script File Description
[8]
9700.0151
Event Messaging System [9]
6700.0157
This Guide, and the documents above, is included as a component of the BioHarness Bluetooth Developer’s Kit.
They are intended to provide information to integrators who wish to incorporate the BioHarness Bluetooth into a
physiological monitoring product.
These documents are not intended as end-user documents. Integrators must assume responsibility
for documentation and software which is supplied to end-users and operators of the physiological
monitoring solution which incorporates the BioHarness Bluetooth system.
Integrators who incorporate the BioHarness Bluetooth into a proprietary physiological monitoring
system assume responsibility for the validation and regulatory compliance of that system.
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1.2. Warning and Safety Notices
The ‘!’ symbol shown left indicates a warning. Failure to heed the text included beside this symbol
may compromise safe operation of the device.
The BioHarness is not specified for the following uses:
As defibrillation-proof
For use in an oxygen-rich environment
As life-supporting
For use only in a shielded location
For use with heart pacemakers
For use with electrosurgical equipment
No modification of the BioHarness Module or chest strap is allowed
ELECTROMAGNETIC COMPATIBILITY
This device has been designed and tested to comply to the relevant electrical and electromagnetic interference
standards for the countries it is available in. This cannot completely eliminate the risk of interference with or from
other radio transmitting or medical electrical equipment in close proximity. If such interference is suspected or
experienced, interfering systems should be removed from the vicinity. Specific interference effects not resolved by
this approach should be reported to Zephyr Technology.
Guidance and Manufacturer’s Declaration - Electromagnetic Emissions
The BioHarness Bluetooth is intended for use in the electromagnetic environment specified below
Emissions
Test
Compliance
Electromagnetic Environment - Guidance
RF Emissions
CISPR 11
Class B
The BioHarness Bluetooth is suitable for use in all establishments, including
domestic establishments and those directly connected to the public low-voltage
power supply network that supplies buildings used for domestic purposes
A Bluetooth receiving device which captures data transmitted by the BioHarness 3.0 should not be
located adjacent to or on top of any electrical or medical equipment which may cause interference
to data transmission or reception
Not intended for use on infants weighing less than 22lbs (10kg)
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Manufacturer’s Declaration - Electromagnetic Immunity
EMISSIONS
Test
Requirement
Test Method
Result
AC Mains Power Input/Output
Ports
ETSI EN 301 489-1 Section 8.4
EN 55022 (2006)
Compliant. Measured
emissions were below
applicable limits.
Harmonic Current Emissions (AC
Mains Input Port
ETSI EN 301 489-1 Section 8.5
EN 61000-3-2 +A1
(2006)
Compliant. Measured
emissions were below
applicable limits.
Voltage Fluctuations & Flicker
(AC Mains Input Port)
ETSI EN 301 489-1 Section 8.6
EN 61000-3-3 (1995)
Compliant. Measured
emissions were below
applicable limits.
IMMUNITY
RF Electromagnetic Field
80 – 1000 MHz
& 1400 – 2700MHz
ETSI EN 301 489-1 Section 9.2
EN 61000-4-3 (2006)
Compliant. Measured
emissions were below
applicable limits.
Electrostatic Discharge (ESD)
ETSI EN 301 489-1 Section 9.3
EN 61000-4-2 (2001)
Compliant. Measured
emissions were below
applicable limits.
Fast Transient, Common Mode
ETSI EN 301 489-1 Section 9.4
EN 61000-4-4 (2004)
Compliant. Measured
emissions were below
applicable limits.
Radio Frequency, Common Mode
ETSI EN 301 489-1 Section 9.5
EN 61000-4-6 (2005)
Compliant. Measured
emissions were below
applicable limits.
Transient & surges in the
vehicular environment
ETSI EN 301 489-1 Section 9.6
ISO 7637-2 (2004) (12/24
VDC)
Compliant. Measured
emissions were below
applicable limits.
Voltage dips & interruptions
ETSI EN 301 489-1 Section 9.7
EN 61000-4-11 (2004)
Compliant. Measured
emissions were below
applicable limits.
Surges
ETSI EN 301 489-1 Section 9.8
EN 61000-4-5 (2006)
Compliant. Measured
emissions were below
applicable limits.
DISPOSAL AT END OF LIFE
The BioHarness Module, charge cradle and chest strap contain no hazardous components. All electrical
components are lead-free.
However, where specific provision is made in a particular region for disposal and recycling of electrical goods,
Zephyr advises following local guidelines for conscientious disposal of equipment.
Zephyr Technology will undertake to dispose of any end-of-life components which are returned to their facility.
Zephyr Technology is registered in Europe under the WEEE recycling scheme.
Do not dispose of the device by fire.
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1.3. Intended Use
STATEMENT OF INTENDED USE
The BioHarness 3.0 is a physiological monitoring telemetry device intended for monitoring of adults in the home
workplace and alternate care settings. The device consists of a chest strap and an electronics module that
attaches to the strap. The device stores and transmits vital sign data including ECG, heart rate, respiration rate,
body orientation and activity. The BioHarness 3.0 provides a facility to detect and transmit single lead ECG
signals to be received by Bluetooth / USB qualified ECG instruments.
The BioHarness 3.0 collects and transmits measurements captured during both sedentary as well as rigorous
activity for Heart Rate, Posture and Activity. Breathing rate values are accurately transmitted only during
sedentary periods.
The BioHarness 3.0 is indicated for use as a general patient monitor to provide physiological information as part
of an occupational welfare monitoring system, for general research and performance measurement purposes, or
where prescribed by a healthcare professional.
The device should not be connected to any external component, other than the chest strap, while it
is being worn by the subject.
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1.4. Contraindications
The device should not be worn by any subject with prior evidence of skin irritation at any point
where the chest strap will contact the subject. If a subject develops irritation or discomfort while
the chest strap is being worn, then use should be discontinued.
Users who have a surgically fitted heart pacemaker or automatic defibrillator should not use a
BioHarness
Not intended for use on infants weighing less than 22lbs (10kg)
1.5. Table of Symbols
Shall include explanation of all symbols marked on the device
Rear label of BioHarness Module. Indicates WEEE compliance – all end-of-life BioHarness
Modules should be returned to agent or distributor or recognised local channel for disposal.
Rear label of BioHarness Module. Indicates C-tick compliance for ECM standards for
Australia and New Zealand
Rear label of BioHarness Module. Indicates FCC Part 15 compliance for radio emission
regulation
Rear label of BioHarness module. Indicates Declaration of Conformity to European health,
safety and environmental regulations
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2. Technical Description
2.1. Model Identification
The information in this document refers to:
Name: Zephyr BioHarness 3
Model: 9800.0189
Firmware Version: 1.3.12.0
The Model number is marked on the identifying label on the rear of the device
Firmware and hardware versions can be identified using the Zephyr Configuration Tool included in the
BioHarness Software Developer’s Kit:
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2.2. System Overview
The BioHarness Bluetooth operates in two modes:
2.2.1. Monitoring Mode
Power Supply: the BioHarness module is powered only by an internal rechargeable lithium polymer cell
The BioHarness Module is secured in a receptacle attached to the chest strap and worn by the subject as
shown (shoulder straps are optional for additional security and do not affect the performance of the chest
strap).
It is powered on and off by depressing the front of the device.
A series of flashing LEDs on the front of the device indicates its status
It is powered by an internal battery.
Passive sensors in the strap detect heart ECG signals through conductive pads
A pressure sensor pad in the strap on the subject’s left hand side detects expansion of the rib cage due to
breathing action.
A thermistor measures the device internal temperature.
An internal 3-axis accelerometer in the BioHarness module measures subject activity level and orientation
of the device (subject standing, supine, prone, inverted).
All sensor data is processed within the BioHarness Module.
An indication of subject physiological status (Green/Orange/Red) is calculated based on sensor input and
subject threshold values stored within the device when it is configured.
It sends physiological data wirelessly by Bluetooth or 802.15.4 to an appropriate receiving device with
graphical interface
The device can transmit over Bluetooth and 802.15.4 frequencies simultaneously
BioHarness Module, attached
to chest strap with optional
shoulder straps
Physiological data sent by
Bluetooth radio protocol or
802.15.4 protocol
Data displayed on PC
New label graphic TBD
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2.2.2. Charging and Configuration Mode
CHARGING MODE
Power Supply: the BioHarness module receives a PC USB input of 5V DC
The BioHarness Module is located in a charging/configuration cradle
It cannot be fitted to a strap/worn by a subject in this mode
An orange LED on the front of the flashes when the device is charging
The orange LED is constantly illuminated when the device is fully charged
The device cannot be over-charged
Charging times: 1 hour to 90% capacity, 3 hours to 100% capacity
CHARGING & CONFIGURATION MODE
BioHarness Module in
Charge/Configuration Cradle
USB Charge/Configuration Lead
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CONFIGURATION MODE
Power Supply: PC USB input 5V DC
The BioHarness Module is located in a charging/configuration cradle
It cannot be fitted to a strap/worn by a subject in this mode
It is connected to a USB Port of a PC for configuration
Configuration Parameters are:
o Transmit and/or logging mode
o Bluetooth discoverability
o Device Network ID
o Bluetooth link configuration settings
o Internal Date/Time reset
o Disable button power off while worn by subject
The device battery is also charged while in this mode
The LED on the front of the device illuminates flashing orange when in configuration mode
All of these parameters are described in detail in the BioHarness BT Comms Link Specification [1] and
BioHarness Bluetooth API Guide [4] documents.
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2.3. System Components
2.3.1. BioHarness Module
1. Blue Bluetooth indicator LED
2. Orange battery indicator LED
3. Red HR detection status LED
4. Green logging indicator LED
5. ON/OFF button
6. Ground spring contact
7. Rear label location
8. ECG signal spring contact
9. USB charging/configuration contacts
10. Breathing signal spring contact
REAR LABEL DETAIL
FRONT
REAR
1
2
3
5
6
9
10
8
7
4
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2.3.2. BioHarness Chest Strap
1. Main fastener sleeve
7. Main fastener hook
2. Wash, size and serial # label
8. Internal breathing sensor location
3. Loop for optional shoulder strap
9. Conductive ECG sensor pad
4. Zephyr brand label
10. Conductive ECG sensor pad
5. BioHarness module receptacle and sensor
contacts
6. Size adjustment slider buckle
1
2
3
4
5
6
7
8
9
10
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STRAP WASH LABEL DETAIL
STRAP SIZES
Size
To fit (cm)
To fit (Inches)
ZPN
Small (XS – M)
69 – 84
27 – 33
9600.0262
Large (M – XL)
84 – 104
33 – 41
9600.0265
XLarge (L – XXL)
Up to 129
Up to 51
Pending
SHOULDER STRAP SIZE
Size
To fit (cm)
To fit (Inches)
ZPN
Shoulder strap
adjustable
adjustable
9600.0117
Serial ZSFBH001019
Size Medium
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2.3.3. BioHarness Charging and Configuration Cradle
1. USB Mini-B socket 5V 2A input
2. USB Charge & Configuration pins
2.3.4. BioHarness Charge/Configuration Lead
The charging/configuring lead is a standard USB-A plug to USB-mini plug. Zephyr Part No: 0015.0003
1
2
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2.4. Software Utilities
The BioHarness Bluetooth product is normally supplied as a software developer’s kit (SDK). Included the SDK,
along with the documentation described in Section 1.1, are a number of software utilities. Their installation and
operation is described in the BioHarness Bluetooth Developer Kit User Manual [3].
2.4.1. Bluetooth Test Application
Displays all summary physiological parameters – Heart Rate, Breathing Rate, Temperature, Posture,
Activity Level, Subject Status as well as the battery level of the device
Displays summary communication data as seen in the General Status window above
Establishes a Bluetooth connection with the device
Enables or disables the data packets being transmitted by the device
Generates CSV files of streaming data when the application is closed – see the Data Output section 3.10
for more information.
The utilities provided by Zephyr as part of the software developer’s kit are intended for use by
developers to confirm device performance. They are not intended as end-user utilities. Developers
who produce end-user software for use with the Zephyr Bluetooth BioHarness are themselves
responsible for any compliance requirements of any end-user software they have created.
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2.4.2. Zephyr Config Tool
Reads all software and hardware properties of the device
Displays and configures Bluetooth connection parameters
Displays and configures data transmit and/or logging mode
Sets device internal clock date and time
2.4.3. BioHarness Log Downloader
This utility can be used to import log data which has been recorded on the BioHarness Module’s internal memory
when logging mode has been enabled.
This Application generates external .csv files, and/or .hed /.dat data files, which can be interpreted using third
party data analysis software.
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3. Operation
3.1. Overview
The following tasks should be checked off before fitting the device to a subject:
Check the device internal battery is sufficiently charged
Visually inspect BioHarness Module & chest strap for signs of damage or wear
Configure the device to transmit/log mode, or both
Confirm that the subject ROG thresholds stored internally in the device are correct for the wearer
Confirm the subject is not fitted with a heart pacemaker or defibrillator
Confirm the chest strap is the correct size for comfortable fitting on the subject
Actual Operation of the device consists of the following steps:
Fit the device to the chest strap
Moisten the heart rate sensor pads with water to improve skin conductivity
Fit the chest strap (and optional shoulders straps if used) to the subject and adjust for fit and comfort
Power on the device using the front button
Confirm operation using the LED indicators
Confirm data reception using suitable software
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3.2. Initial Inspection
Before operation of the BioHarness and strap, check the following:
BIOHARNESS MODULE
Damage to casing e.g. cracks, scuffing or distortion due to heat. Severe physical impact to the device
may compromise subsequent accelerometer performance
Removal or peeling of labels
Loose contact springs
Shake the device and listen for any loose or detached internal components
Grease or dust contamination of contact springs or USB contact pins. Contamination may affect
conductivity – clean with water and a mild detergent. Dry effectively.
BIOHARNESS CHEST STRAP
Contamination of the strap by perspiration or external factors. Perspiration buildup may show as faint salt
deposits if the strap is not rinsed in water after heavy use. Salt contamination on the conductive sensor
surfaces may compromise performance of the system. Full washing instructions are included in the
Maintenance Section 5.1
Excessive scuffing or any tearing of the sensor surfaces
Failed or loose stitching
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3.3. Charge Battery
Charge by placing the BioHarness Module in the charging cradle, and connecting to a PC USB Port.
An orange (amber) LED will flash on the front of the device when charging
The LED will stay illuminated when fully charged
Charge times
o 1 hour to 90% capacity
o 3 hrs to 100% capacity
When in operation, the orange LED will flash when battery level is greater than 30% of a full charge.
When constantly illuminated, charge is less than 30%. When the orange LED extinguishes, charge is
below 10%
Use only the wall charge unit supplied with the system to charge the device from a domestic
power supply.
Charging at high temperatures (>45°C, 113°F) has risk of fire or explosion
BioHarness Module in
Charge/Configuration
Cradle
Orange LED flashes while device is charging
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3.4. Check BioHarness Module Configuration
The BioHarness Module stores previous configurations. To confirm or change a previous configuration, connect
the BioHarness module in its cradle to a PC hosting appropriate software, such as the Zephyr Config Tool
supplied with the SDK.
The device can be configured to transmit data by Bluetooth and or 802.15.4, anjd/or log data to internal memory.
Powering on the device will initiate either or both modes.
3.4.1. Set Transmit Mode
Using the Zephyr Config Tool:
1. Open the Application
2. Click the Select Device button and use the pulldown to select the BioHarness Module, identified by its serial
number. This list will automatically populate with the serial number of any device connected to the PC.
BioHarness Module in
Charge/Configuration Cradle
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3. To activate transmitting modes, go to the User Config tab of the ConfigTool and check the Bluetooth Enable
and/or ECHO Enable. ECHO is the Zephyr proprietary name for the 802.15.4 transmitting mode.
3.4.2. Bluetooth
1. The Bluetooth tab in the Zephyr Cfg Tool allows the following to be configured
2. Network ID – the label by which the device will be identified when scanned for. Default is device serial
number.
3. Bluetooth detectable – the device can be set to be non-detectable if necessary. Default is detectable.
4. Link Timeout and Lifesign period settings. Defaults are shown, for use with Zephyr OmniSense software.
When both are set to ), no lifesign message need be sent, and the device will never unilaterally time out the
Bluetooth link.
5. Other Bluetooth Devices to Call settings are for configuring the BioHarness to connect to auxiliary Bluetooth
sensor for use in Zephyr PSM monitoring systems. These will be set automatically for use when the device is
used as a component of one of these systems.
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3.4.3. 802.15.4 (ECHO)
ECHO is Zephyr’s proprietary name for systems which are based on the 802.15.4 protocol.
1. The Bluetooth tab in the Zephyr Cfg Tool allows the following to be configured
2. Short transceiver Address – set for use as a polling address in conjunction with Zephyr’s PSM Training
system. Factory configured. Must be unique within a system (0 – 254)
Channel
Frequency
11
2.405 GHz
12
2.410 GHz
Increment by 1 up to 25
Increment by 5 MHz
25
2.475 GHz
3. RF Power Level. Factory configured at 19dB
4. Max Repeaters – defines the maximum number of Zephyr ECHO receiver units which can be used within a
PSM system.
5. The maximum number of repeater hops allowed within a PSM system.
6. Beacon Interval – factory configured.
3.4.4. Set Logging Mode
In the Zephyr Config Tool User Cfg tab:
1. Set the Logging Format from the list available
2. The Summary Logging formats are only available on BioHarness 3.0 versions.
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3.4.5. Subject ROG Thresholds
The BioHarness module outputs a subject status indication which has the values:
Green – subject’s physiological parameters are within thresholds as configured
Orange – one or more of the subject’s parameters have crossed the configured threshold values. The
subject’s data should be monitored more closely.
Red – one or more of the subject’s parameters have exceeded threshold values for a sustained period
(configurable). The subject’s physiological parameters should be monitored closely, and confirmation
sought if there is an indication of stress, fatigue or trauma.
ROG THRESHOLD AND ALERT STATE LOGIC
Subject Status is determined by analyzing Heart Rate, Breathing Rate and Activity level values, calculated over a
5 second rolling average. Activity level is measured by an accelerometer within the BioHarness Device.
Parameters are determined to be LOW or HIGH according to the following thresholds:
If any of the subject’s parameter’s above cross from the NORMAL (Green) zone to LOW or HIGH values
(Orange/amber or Red), then the subject’s state may be raised from Normal to Alert, according to the logic table
following.
The default numerical values for the thresholds are set automatically and need not be changed for normal
operation.
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Any other states are Normal. Each line in the table represents one permutation of parameters which generate an
Alert state.
ROG Alert Logic Table
Heart Rate
Breathing Rate
Activity Level
State
NORMAL
NORMAL
NORMAL
No Alert
LOW
Alert
LOW
Alert
HIGH
NOT HIGH
Alert
HIGH
NOT HIGH
Alert
The following logic is then applied:
Status Green + Alert for 5 seconds = Status Orange
Status Orange + Alert for 55 seconds = Status Red
Status Red + No Alert for 5 seconds = Status Orange
Status Orange + No Alert for 5 seconds = Status Green
A No Alert State for 5 seconds will reduce State from Red to Orange, or Orange to Green.
The time intervals shown above are also configurable. The values indicated are the default values:
Green + 5 seconds Alert = Orange > Green to Orange Time
Orange + 55 seconds Alert = Red > Orange to Red Time.
3.4.6. ROG Threshold Default Values
Subject ROG thresholds can be configured and stored inside the device, so that it can transmit an indication of
ROG status as determined by the logic in the previous sections. Information on configuring the device ROG
thresholds is described for developers in [1] General Comms Link Specification.
5 SEC ALERT STATE
55 SEC ALERT STATE
5 SEC NO ALERT STATE
5 SEC NO ALERT STATE
GREEN
ORANGE
RED
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3.5. Confirm Subject State
Before fitting the chest strap to the subject, confirm the following:
Subject is not fitted with a heart pacemaker or automatic defibrillator
Subject has no pre-existing skin irritation or trauma on the area where the strap will be located
Subject has not applied any lotion, cream or oil to the skin area where the ECG sensors will be located
.
HR Sensor locations
Breathing Sensor location
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3.6. Fit BioHarness Module to Strap
The BioHarness Module attaches to the chest strap by insertion into a custom receptacle. A cutout on the top
edge of the device allows for finger leverage to remove from the receptacle, and a ridge in the receptacle and
matching groove in the device itself prevent improper insertion.
Three metal rivets locate through the receptacle and form conductive paths to the ECG and breathing sensors.
These rivets make contact with alloy spring contacts on the rear of the BioHarness module.
Check the springs for contamination before attaching the module.
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3.7. Fit Strap to Subject
In order that the BioHarness Module may perform as it was designed, the chest strap must be fitted in the correct
location, with an appropriate level of tension around the subject’s torso.
1. For optimum performance, lightly moisten the sensor
pad surfaces with water to aid conductivity. Press the
water into the pad if beading on the surface occurs.
2. To adjust tension, wear the strap with the main
attachment hook and tension slider adjuster initially at
the front.
3. The strap should be a snug fit, so as not to move
when the subject is active. A tension loop is sewn
at the rear of the strap. When the subject has inhaled
and the chest fully expanded, the tension loop should
be flush with the main strap – it is shown un-tensioned
in the image.
4. When size is adjusted, rotate the strap so that the
device is located under the subject’s left armpit, with
Zephyr brand label at the front – the brand label may
not be exact centre.
5. When correctly located, a line through the centre of
the device should be directly beneath the subject’s
arm pit, or slightly (~1/2”) to the rear
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3.8. Power On/Off BioHarness Module
Power On the BioHarness Module by depressing the center front of the device. The button has a tactile
click to indicate switching. Hold the button depressed until the all four LEDs flash.
The device may be powered on before or after attachment to the strap. However, attaching the device
while it is recording and/or transmitting data produces an electrical noise spike as contact is made. It may
not be desirable for this noise spike to be present in any recorded data. If this is the case, attach the
device to strap before powering on.
To power off the device, depress and hold the control button until the LED stops flashing.
3.8.1. Data Stabilisation Times
Parameter
Time to stable data output (Device ON, worn by subject)
Heart Rate
15 seconds
Breathing Rate
45 seconds
Device Temperature
Immediate
Activity Level
5 seconds
Posture
5 seconds
Subject Status Indication
(Red/Orange/Green)
45 seconds
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3.8.2. Device LED Behaviour
The BioHarness module can operate in three modes:
Transmit data by Bluetooth
Log data to internal memory (no transmit)
Both Transmit and log the same data simultaneously
The device can be configured to these modes using the BT Config Tool.
Transmit
Logging
Battery
HR Detect
Downloading
DEVICE STATE IN CRADLE
Connected
Error
Always off
Charging
Charged
No power
No records/Finished
Error
Disabled
Transmit
Logging
Battery
HR Detect
Connected
Disabled
Enabled
Disabled
> 30% charge
< 30% charge
HR Locked
Not worn
DEVICE STATE WHEN WORN
Error
Error
< 10% charge
Strap worn, HR not locked
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3.9. Transmitted Data
Data output from the device is described fully in the General Comms Link Specification [1]. Data output is in the
form of a number of messages, each of which can be enabled or disabled. Details on how to do this are included
in the above document.
For a full description of all transmitted parameters and data packet options, refer to the BioHarness 3.0 Data
Sheet.
3.10. Logged Data
Logging modes can be configured using the Zephyr Configuration tool. Available modes are:
General data (default)
General + ECG
General + Accelerometer
Summary data
Summary + Waveform
When device memory is full, older logs are overwritten automatically. Alternatively, all logs can be deleted using
the Zephyr Configuration Tool.
For a full description of all logged parameters and log format options, refer to the BioHarness 3.0 Data Sheet.
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4. Interpretation of Data
The BioHarness Bluetooth device intended use is to provide contextual remote physiological information. It should
be used as an aid in the diagnostic process.
The device may indicate that a subject parameter is outside an acceptable range of values. Interpretation of such
indication should be informed by one or more of the following:
Knowledge of the subject’s underlying physiological condition e.g. level of fitness, abnormal blood
pressure etc
Pre-existing medical or physiological conditions e.g. fatigue, dehydration, infection, trauma
Environmental Factors such as heat, humidity etc, or mechanical or motion factors which may affect
activity data
Subject level of activity and any other circumstance which may lead to stress or fatigue such as fear, lack
of sleep, etc.
Departure of heart rate, breathing rate or activity level from an acceptable range of values may or may not cause
the subject’s Red / Orange / Green Status indication to alter. This will depend on the values which have been
assigned to the subject’s ROG thresholds stored in the device. These values may be occupational or activity-
dependent.
In addition, the following factors may affect individual physiological parameter readings:
4.1. Heart Rate
Indication
Possible Cause
Low Heart Rate
Excessive noise caused by sensor/skin relative movement and/or poor
conductivity between the skin surface and the sensor. Adjustment of the chest
strap tension for the correct fit, and moistening of the sensor surfaces with
water will address this issue in most cases.
High Heart Rate
As above.
4.2. Breathing Rate
Indication
Possible Cause
Low Breathing Rate
Incorrect tension on the chest strap may prevent adequate sensor response to
chest expansion and contraction. If the strap is too loose, it may not respond
the chest expansion – if too tight, it may not respond to chest contraction.
Individual subject breathing characteristics which are predominantly
diaphragmatic, as opposed to apical breathing.
High Breathing Rate
Direct palpitation of the breathing sensor location from an external source
which mimics the cyclical breathing action. This may be due to the regular
movement of any object which can apply direct external pressure to the sensor
such as equipment components or webbing.
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4.3. Skin Temperature
Indication
Possible Cause
Minus 3276.8°C
A skin temperature channel in the general transmitted packet and log format
exists in order to maintain reverse compatibility with earlier versions of Zephyr
application software. However the BioHarness 3.0 always returns an ‘Invalid’
value of -3276.8 °C for this parameter. The BioHarness 3 does not support the
Skin Temperature channel.
4.4. Activity Level
Indication
Possible Cause
Erroneous high activity level
Internal accelerometers measure absolute movement of the device. If a subject
is inactive, but in an environment which exerts forces on the device e.g. almost
any mode of transport, then indicated activity level will reflect the motion of the
vehicle rather than the subject
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5. Maintenance & Cleaning
The BioHarness Module and Chest Strap contain no user serviceable parts. Return the components
to your distributor, or the manufacturer, in the event of failure or need for battery replacement.
5.1. BioHarness Module
Visually inspect the device before use, to check for signs of damage or contamination to the casing and
spring contacts
Check that the spring contacts on the rear of the case have not been prised proud of the case surface,
which may cause them to catch on the USB charge/configuration cradle when the device is inserted.
Clean with a damp cloth when needed
Use mild detergent if necessary
Avoid leaving in direct sunlight for long periods
The device does not require calibration
The BioHarness Module does not require sterilisation or disinfection for normal use. Do not
autoclave, or use sterilising tablets.
5.1.1. Battery Lifetime and Replacement
The BioHarness Module is powered by an internal rechargeable Lithium Polymer cell.
Battery is not user replaceable. Return to your distributor for replacement. Only trained personnel
should change a battery.
.
Expected battery charge cycles: battery should retain 80% of new capacity after 300 charge cycles
BATTERY MAINTENANCE TIPS
Store the device at 20 – 25 °C to prolong battery life.
Avoid storing in an uncharged state for prolonged periods
A top-up charge of the battery is recommended once a month if the device is not used regularly, to
maintain optimum battery condition
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5.2. BioHarness Strap
WASH INSTRUCTIONS
Detach the BioHarness™ module
Rinse strap in fresh water after use to prevent salt buildup from perspiration
Hand Wash, or
Machine-wash on a Cold, Delicate setting after 30 days of use.
o Firmly attach the Velcro® fastenings together and do not wash with other garments which may be
damaged by these fastenings.
o Use a washing pouch if possible.
o Use soap or mild detergent, but NOT sterilizing tablets
o Maximum recommended wash temperature: 40°C / 104°F
o Do Not spin or tumble dry
o Hang to dry, out of direct sunlight.
o Do not bleach.
o Do not iron.
Zephyr guarantees performance for a minimum of 80 machine washes of the chest strap.
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6. Accessories and Replacement Components
The following are Zephyr replacement component and accessory parts:
Component
Part/Product Number
BioHarness Bluetooth Developer Kit (includes 3 chest straps)
9700.0019
BioHarness Bluetooth Module (Electronics sensor)
9800.0189
BioHarness Chest Strap Small (XS-M)
9600.0262
BioHarness Chest Strap Large (M-XL)
9600.0265
BioHarness Shoulder straps (optional – one size adjustable)
9600.0117
BioHarness Charge Cradle & USB Cable (for single device)
9600.0257
Further component combinations, such as BioHarness Module/Strap additional units, and 5 or 50 packs of chest
straps are also available. Consult a Distributor for more information.
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7. Technical Specifications
Unless otherwise stated: Temperature = 25 °C, Pressure = 1 ATM
7.1. Electrical
Power Supply:
Type: Rechargeable Lithium Polymer
No. of cells: 1
Nominal Voltage: 3.7V
Charge Source: PC USB or USB wall charger
7.2. General & Physiological
Parameter
Notes
Values
Min
Typ.
Max
Acc’y
Unit
General
Logging capacity
1
500+
hours
Power supply voltage
USB
4.5
5
5.5
V
Battery Life – Radio transmitting
2
12
24
hrs
Battery Life - Logging
3
35
hrs
Charging Time
3
hrs
Storage
Between
charges
6
Charging Cycles
4
300
Cycles
Digital resolution
12
bits
Heart Rate
ECG sensor sampling frequency
250
Hz
Range
5
25
240
±1
BPM
Time to first lock
At 60 bpm
15
25
s
No Signal Response time
60 to 0 bpm
10
s
Input dynamic range
0.1
10
mVpp
ECG Amplitude
6
0.25
15
mV
Operating Modes:
Active – device transmitting data + logging, if configured
Standby – device not transmitting but connectable + logging, if configured
Notes:
1. General Logging (Gen + ECG = 140hrs, Gen + Acceleration = 280hrs)
2. Min Period – after 180 charge cycles. Max Period – new battery
3. Software required for data download.
4. After 300 deep discharge/charge cycles the battery will retain a minimum of 80% of its original capacity.
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5. Heart Rate Accuracy for defined activity levels: based on USARIEM* guidelines
Accuracy (bpm)
Activity Level
VMU
% of time
Max Deviation (bpm)
±1
Laboratory – ECG emulator
100
1
±2
Low activity (static)
< 0.2
99
5
±3
Moderate activity (walk/jog)
< 0.8
95
5
±3
High activity (run)
> 0.8
95
10
6. Accuracy greater of 100 µV or 10%
*United States Army Research Institute of Environmental Medicine
/Continued on next page
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Parameter
Notes
Values
Min.
Typ.
Max.
Acc’y
Unit
Breathing Rate
Sampling frequency
25
Hz
Range
7
3
70
±1
BPM
No signal response time
15
s
Step change response time
15
s
Device Temperature
Sampling frequency
8
1
s
Range
10
60
±2
°C
Stabilization Time
20
minutes
Acceleration
Sampling Frequency
100
Hz
Range (any axis)
-16
+16
g
Bandwidth
50
Hz
Sensitivity
12
mg
Activity
VMU (vector magnitude units)
9
16
g
Epoch
1
s
Bandwidth
0.06
9
Hz
Dynamic Range (any axis)
16
16
g
Sensitivity
10
mg
Noise
7.2
mg
Posture
Reporting frequency
1
Hz
Dynamic Range
10
-180
+180
Degrees
Epoch
1
s
Sensitivity
8
1
Degrees
Recommended storage temperature 20°C
Notes:
7. Breathing Rate Accuracy for defined conditions: based on USARIEM* guidelines
Accuracy
(Bpm)
Condition (average every 15
seconds)
VMU
% of time
Max Deviation (bpm)
±2
Laboratory – breathing
emulator
100
2
±3
Low activity (static)
< 0.2
95
5
±3
Moderate activity (walk/jog)
< 0.8
95
5
±5
High activity (run)
> 0.8
90
12
±5
Talking & breathing rate in
range 6 – 25 bpm
100
8. Min = device transmitting, Max = device logging
9. Vector Magnitude Units, 3 axis, sampled at 125 Hz, averaged to 1 second epoch.
10. 0° = vertical, 90° = horizontal. 180° = inverted. Subject anterior inclination is a positive value, posterior is
negative. Medio-lateral inclination does not affect sign of posture value.
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7.3. RF
7.3.1. Bluetooth
Compliance Version 2.1 + EDR
Supported Profile Serial Port
Discoverability Configurable
Frequency 2.4 to 2.835 GHz
Output Power 10 dBm
Operating Range Up to 300ft / 100m
Up to 300yds with long range receiver antenna
(Dependent on Bluetooth receiver components)
Sensitivity -91 dBm
Antenna Type Internal
7.3.2. 802.15.4
Compliance IEEE 802.15.4
Frequency 2.405 – 2.480 GHz
Output Power 100mW
Operating Range Up to 300 yds / 275m
Sensitivity -89 dBm
Max Data Rate 250 kbps
Modulation Type OQPSK
Spread Spectrum DSSS
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7.4. Compliance
The BioHarness has been designed to conform to the following:
EC38 Type: Type 3
RTTE: Directive 1999/5/EC
FCC ID: VZ6-BH3
IC ID: 7565B-BH3
Contains Transmitter Module:
FCC ID: T7V1315
IC ID: 216Q-1315
FCC Declaration
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED
BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE
USER'S AUTHORITY TO OPERATE THE EQUIPMENT.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Any computer used in conjunction with this device must be covered by a Declaration of Conformity or must be
FCC certified in its own right.
7.5. Environmental
Operating Temperature -30°C / +60°C
Storage Temperature -40°C / +85°C
Charging Temperature 0°C / +45°C
ESD IEC 801-2KV
IP Rating: IP55
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7.6. Mechanical
Dimensions
Transmitter/recorder
28 (Diam) x 7 mm (1.84 x 0.44 inches)
Charging Cradle
(Single device)
80w x 24d x 37h mm (2.5 x 1.6 x 1.1 inches)
Weight
Strap (Large)
71 grams
Transmitter/recorder
18 grams
Case Material
PC
Polycarbonate
All dimensions in inches.
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