Gait up Physilog 5 User Manual

User manual

Thank you for purchasing Physilog®5, the Swiss quality movement sensor. This manual
introduces how to use the different features of the sensor.

Table of Contents

1.Physilog®5 elements...........................................................................................................................................2

2.Charging.................................................................................................................................................................2

3.Recording with Physilog®5...............................................................................................................................3

3.1 Standalone measurement............................................................................................................................3

3.2 Live Bluetooth stream of data....................................................................................................................3

3.3 Synchronous measurement with multiple Physilog®5......................................................................3

3.4 Extension board (coming in march 2017)...............................................................................................4

4.Data Analysis........................................................................................................................................................4

5.Practical Considerations....................................................................................................................................5

5.1 Fixation................................................................................................................................................................5

5.2 Handling / Maintenance..............................................................................................................................5

5.3 How to update Date and Time of the Physilog®5................................................................................7

5.4 How to update firmware of Physilog®5 with nRF Connect..............................................................7

5.5 Sensor specifications.....................................................................................................................................8

5.6 Battery autonomy estimations.................................................................................................................9

5.7 Troubleshoot...................................................................................................................................................10

6.Limited Warranty & Support Policy.............................................................................................................11

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 1

1. Physilog®5 elements

2. Charging
The Physilog®5 is charged via the microUSB port. Plug the microUSB connector of the cable

delivered with the Physilog®5 to the Physilog®. Plug the USB connector to a Computer or
Charger (see voltage specifications below).
Warning: Be careful to plug the microUSB cable in the correct orientation into the Physilog®,
forcing the connector may permanently damage the Physilog® and compromise its
waterproofing.

Low battery level is indicated by orange blinking during measurement or if the Physilog®
blinks rapidly 3 times red when starting and doesn't start the recording (see LED indications
below). A battery level estimation is available in the mobile application. When the Physilog®
is discharged, plug it for charging for at least 30 minutes before use.
It is recommended to avoid complete discharging of the Physilog®5, therefore check that the
Physilog® sensors are off when you store them. After a long period without using the
Physilog®, plug it for charging for at least 30 minutes before use. It may happen that the LED
doesn't blink orange at the beginning of charging after the battery was very low, to see the
charging ongoing shortly push the main button or disconnect and reconnect after some
charging time.

Supply Voltage specifications
The Physilog® 5 should be charged using USB at 4.2V, 100mA. For charging, the ambient
temperature must lie between 0°C and 45°C.

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 2

3. Recording with Physilog®5
There are two ways to start and stop a measurement with the Physilog®5:

3.1 Standalone measurement

Press on the main button (for about 2 sec, until the green light turns off) to start the
measurement. During measurement the Physilog® blinks green. Hold the main button for 3
seconds, until the light turns orange to stop the measurement. When the measurement has
been concluded, the LED shortly blinks green three times.

3.2 Live Bluetooth stream of data

To receive a live Bluetooth stream of Physilog® data, start the measurement from the
receiving device (f.ex. Using the Gait Up app on tablet). There is no need to pair your
Physilog® with the tablet prior to Bluetooth communication, just select the Physilog® from
the list in the app and launch the recording from the app. During measurement the
Physilog® blinks green. To stop the measurement, click on “Stop measurement” in the app or
hold the main button of the sensor for 3 seconds, until the light turns orange.

If the sensor is not detected by the tablet, shortly press the main button to enter detection
mode. If the sensor can still not be connected, check that it has enough battery and plug and
unplug the sensor to a computer.

The Physilog®5 works in “stream and log” mode: it saves all recorded data on its SD card, also
when streaming the data in real-time via Bluetooth. This ensures that the data is not lost
when the sensor gets out of Bluetooth range.

3.3 Synchronous measurement with multiple Physilog®5

The Physilog®5 sensors synchronize automatically at start when they are correctly
configured. After starting, one of the sensors (Master) will start to blink green, the others
(Slaves) shine green and don't record until they receive the synchronization signal from the
Master sensor. Once they are synchronized, they blink green synchronously with the Master
sensor and record. Slave sensors contain a file named “slave.txt”, the Master sensor doesn't
have such a file. A sensor network can contain as many slave sensors as wished, but there
must be a single Master sensor.
To start Slave sensors without receiving the signal from the Master, shortly press the main
button when it is shining green, the sensor will start the measurement without being
synchronized to other sensors.
Multiple sensor measurement start via Bluetooth command will soon be available.

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 3

3.4 Extension board (coming in march 2017)

An extension board including a 3D magnetometer and a GPS sensor will be available from
March 2017.

4. Data Analysis
Physilog® always saves raw data on its internal memory, also when streaming the data live

via Bluetooth. Users have access to this raw data through companion software called
Research ToolKit (RTK). The RTK is available for computer (PC and Mac) and Android.
Functions to read raw data inside MATLAB® are also available. Please refer to the RTK user
manual for more details.

USB data transfer
Data saved on the SD card inside the Physilog® can be accessed using USB data transfer.
Therefore plug the USB cable to the Physilog® and a computer. The Physilog®5 connects to
the computer almost instantaneously and files can be accessed. Copy-paste the files to your
computer for analysis. From here you can also delete the files from Physilog®'s memory.
Warning: Do not remove the conf.bin file which contains the configuration information,
otherwise the Physilog® will not record any data. If this happens, recreate a configuration
using the Research ToolKit.

Bluetooth data transfer to Android mobile or tablet (app available 2017)
With the Gait Up application installed on an Android mobile, you can stream data to your
tablet or phone. Data is streamed to the device in real-time and displayed for easy check of
successful data collection. When collecting data at high frequency (above 100Hz), the
wireless data reception may encounter some delay and remaining data is transferred after
the end of the measurement.
Note: Bluetooth 4.0 or higher is required on the mobile device to be able to communicate
with Physilog®5.

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 4

5. Practical Considerations

5.1 Fixation

The Physilog®5 comes with a rubber clip as default attachment accessory (available from Feb

2017). Additional rubber clips and elastic straps with Velcro patches to stick onto the
Physilog® can be purchased from Gait Up's online shop (shop.gaitup.com).

5.2 Handling / Maintenance

Physilog®5 should be handled carefully. In particular, it should not receive shocks, such as fall,
crushing, being hit etc. Do not press too hard on the on/off button, this can damage the
button.
Warning: Do not use or charge the Physilog® if the sensor or its case is damaged. Contact
Gait Up about what further action is needed when the case is damaged. In case the battery is
damaged immediately move the device away from flammable materials and contact Gait
Up's customer support.

- To benefit from the maximal battery life, fully charge Physilog® sensors before doing
measurements (LED shines green when connected to computer or charger, you can also
check with the app or RTK).

- Copy trial recordings to your computer: Physilog® is not the best place to keep and save
important data.

- Physilog®5 can be used outside. It has the IP67 label, which means that it is waterproof up
to a depth of 1 meter for 30 minutes. Do not use Physilog®5 to measure water-sport activities
without additional waterproofing.

- Storage: Store in a cool (0°C – 30°C) and dry place. The provided box is the perfect place for
your sensor.

- Cleaning: Sensors can be cleaned gently using alcohol wipes. Before you clean the device
make sure it is turned off and disconnect all cables. Alcohol used in excess may damage the
sensor’s waterproofing. Make sure to use wipes and not put liquid alcohol directly on the
sensor.

- Sensors do not need yearly recalibration.

- Do not throw Physilog® sensors in the normal trash, dispose of it properly considering local
laws and rules about electronic waste and batteries.

- Make sure to know which Physilog® file corresponds to which trial for your analysis – Last
digits of file name are automatically incremented (exceeding 999 and firmware update

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 5

resets the increment back to 1). Note that date of file generation (recorded between one start
and stop of the Physilog®) is visible in the XLS or CSV file and the Matlab structure “header”.
If you wish to adapt date and time, read section below.

- Do not remove the “conf.bin” file from the Physilog, otherwise it will create empty files (no
sensor activated). If this happens, recreate a configuration in the Research ToolKit software.

Safety information

 Physilog®5 includes a lithium battery. This battery may only be charged over a limited temperature

range. Never attempt to dock or charge your Physilog® when the temperature is outside of the range of
0 to 45°C.

 Physilog®5 should be charged through USB connection with a computer. An external charger may be

used; note that no charger is provided by Gait Up. Gait Up declines any responsibility due to charger
usage.

 Supply voltage should be as follows: DC, 4.2V. Current consumption is 100mA. All external circuits

connected to the Physilog®5 should be «Safety Extra Low Voltage» and «limited Power Sources» circuits
as described in the following standards: IEC60950-1:2005+/A1:2010 & EN60950­1:2006+/A11:2009+/A1:2010+/A12:2011

Warnhinweise:

 Physilog®5 enthält eine Lithium Batterie. Die Batterie soll nur in einer definierten Temperaturspanne

aufgeladen werden. Versuchen Sie nie Ihren Physilog® an den Computer anzuschliessen oder
aufzuladen, wenn die Aussentemperatur nicht zwischen 0°C und 45°C ist.

 Sensoren sollen durch eine USB Verbindung mit einem Computer aufgeladen werden. Ein externes

Ladegerät kann benutzt werden; Gait Up empfiehlt und liefert aber kein externes Ladegerät. Gait Up
übernimmt keine Haftung falls ein Ladegerät gebraucht wird.

 Die erlaubte Netzspannung ist: DC, 4.2V. Stromaufnahme beträgt 100mA. Alle an den Physilog®5

angeschlossenen externe Stromkreise sollen die «Sicherheitskleinspannung” und “mit begrenzter
Leistung” Regeln erfüllen, die in den folgenden Normen beschrieben sind: IEC60950-1:2005+/A1:2010
und EN60950-1:2006+/A11:2009+/A1:2010+/A12:2011

Informations relatives à la sécurité:

 Physilog®5 contient une batterie au lithium. La batterie ne doit être chargée que si la température

extérieure est dans les limites définies. N’essayez jamais de connecter ou charger votre Physilog®5 si la
température ambiante est en dehors des limites de 0 à 45°C.

 Physilog®5 doit être chargé par une connexion USB avec un ordinateur. Un chargeur externe peut être

utilisé; mais Gait Up ne livre et ne recommande pas de chargeur. Gait Up refuse toute responsabilité
liée à l’utilisation d’un chargeur externe.

 La tension de réseau devrait être: DC, 4.2V. La consommation de courant est de 100mA. Tout circuits

connectés à Physilog®5 doivent être «très basse tension de protection» et «source à tension limité»
comme décrit dans les normes suivantes: IEC60950-1:2005+/A1:2010 et EN60950­1:2006+/A11:2009+/A1:2010+/A12:2011

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 6

5.3 How to update Date and Time of the Physilog®5

- Create a new text file on the Desktop of your computer or directly on the Physilog® sensor
(right click, new>text file)

- Leave it empty and rename it to TIME.txt

- Copy-paste the file to the Physilog® if you created it on the Desktop

- The Physilog® date and time are updated to the hour when the file has been created

Create a new text file each time you update the date (TIME.txt file previously created will
update to the date it was created, so in the past), and do not rename the existing TIME.txt.
The TIME.txt file will disappear from Physilog's memory when disconnecting the Physilog®
from the computer, therefore it is normal to not find it the next time you open the Physilog®
on the computer.

5.4 How to update firmware of Physilog®5 with nRF Connect

The firmware is updated via Bluetooth. Therefore install the Android application “nRF
Connect for Mobile” on a mobile or tablet and follow the steps below:

- Download the latest firmware version from the email to the
Android device

- Open the nRF Connect app and enable all necessary permissions
(Bluetooth and Position)

- Go to Scanner tab and scan for surrounding Physilogs (shortly
push the main button of the Physilog®5 to enter detection mode)

- Select connect of one Physilog®5 sensor in the list

- In the top rigth corner of the app click on the DFU button (on the
right of “Disconnect”) and select “Distribution Packet (ZIP)” from
the proposed options

- Get the new firmware file from where it was downloaded (Some
device may only allow to select from Dropbox)

- Wait until the graph in the app has shown that 100% of the
firmware was transferred

- Disconnect the Physilog® by clicking on “Disconnect” and close the tab of the Physilog®5

- Plug the Physilog® to the computer and update the date and time (see above)

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 7

5.5 Sensor specifications

Component Manufacturer Remarks
Inertial Sensors STMicroelectronics 3D Accelerometer up to 16g

3D Gyroscope up to 2000°/s

Ambient Sensor STMicroelectronics Barometric altitude from 260 to 1260 hPa

Temperature sensor accuracy of +/-1.5°C

Radio Chip Nordic Semiconductors Multi-standard: Bluetooth Low Energy (BLE), Ant+,

and Near field communication (NFC)
Internal Memory Apacer Class 10 microSD Card, 8Gb
Microcontroller Nordic Semiconductors ARM® Cortex® M4 with floating-point for on-board

processing
Micro-usb interface Amphenol FCI & Microchip Waterproof IP67, with dedicated chip for fast data

transfer. High-speed USB 2.0
Battery Renata Lithium Ion Polymer Accumulators 3.7V 140mAh
Plastic Enclosure ABS Polylac® PA-757 Biocompatible with bi-color LED and 8mm button

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 8

Operating
Temperature

From-20° to 45°C

Assembly Locatis Electronics SA (CH) Weight 11 grams

Dimensions 26,5 x 47,5 x 10 mm
Extension Board

(optional)

Ublox
Melexis

Low-power GPS/GNSS module

High-quality 3D Magnetometer

Component Manufacturer Remarks

3D orientation
3D orientation of the sensor is calculated on-board during the measurement. A 3D model of

the Physilog®5 which indicates its orientation is shown in the app for illustration purposes.
The Matlab function to read the .BIN file gives the quaternions and Euler angles
at the output.

5.6 Battery autonomy estimations

Measuring channels Approx. Autonomy *

3D Accelerometer 3D Gyroscope Barometric pressure Hours

256Hz 256Hz 64Hz 20h
256Hz - - 24h

*Autonomy measured for firmware version 0.0.9 at room temperature

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 9

5.7 Troubleshoot

LED indications

Situation Description Meaning
Connected via USB Green continuous Fully charged

Orange blinking Charging
Multicolor blinking Data transfer
Red continuous Error 1

During
measurement

Green blinking Measuring
Green continuous Waiting for synchronization
Orange blinking Low battery

Error indications 2 rapid red blinks, pause – repeated 3 times in total Error 2

3 rapid red blinks, pause – repeated 3 times in total Error 3
4 rapid red blinks, pause – repeated 3 times in total Error 4
5 rapid red blinks, pause – repeated 3 times in total Error 5
6 rapid red blinks, pause – repeated 3 times in total Error 6

Troubleshoot for error indications

Error Type* Troubleshoot
Error 1 Disconnect and replug the Physilog®
Error 2 Contact Gait Up
Error 3 Charge the Physilog®
Error 4 Contact Gait Up
Error 5 Contact Gait Up
Error 6 Empty the memory card

*see LED indication above

Soft reset
The soft reset is the first manipulation which can be done if the Physilog® is not working

properly. To do a soft reset, hold the main button for 15 seconds. The LED shines orange and
then stops. If the problem persists, fill out the contact form on the support page
(www.gaitup.com/support2017) or write an email to: [e-mail]. Please indicate
Physilog® serial number and describe the problem in as much detail as possible.

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 10

6.Limited Warranty & Support Policy

Warranty:
Gait Up offers 12 months parts and labour on Physilog® starting from the date of delivery. If within one year
from the date of delivery to the customer the equipment does not comply with the foregoing Limited warranty,
Gait Up will at Gait Up’s option, repair, replace or refund the purchase price of the defective equipment free of
charge to the customer. Customers requesting repair, replacement or refund are required to ship, the Physilog®
to Gait Up. As a condition of this warranty, customers must contact Gait Up’s customer service for instructions
on and approval of shipment prior to returning any defective Physilog®. The warranty shall not apply to any
product or component thereof which has been repaired or altered by anyone other than Gait Up in any manner
so as, in Gait Up’s judgement, to affect its service ability, or any product been subject to alteration, accident,
misuse, abuse, neglect or abnormal wear. Gait up warrants solely to the original purchaser (customer). Only the
terms expressed in this warranty shall apply and no distributor, corporation or individual is authorized to
amend, modify or extend this warranty in any way.
Gait Up shall have no liability for any consequential, incidental or special damages by reason of any act or
omission or arising out of or in connection with the equipment or its rental, delivery, installation, maintenance,
operation, performance or use, including without limitation any loss of use, lost revenue, lost profits or a cost
associated with downtime. The obligations contained in this paragraph continue beyond the term of this
limited warranty.
Physilog® and Gait Analysis Software are not considered as proper Medical Devices, since they do not support
directly diagnosis, but they provide data which have to be analysed and approved by medical doctors for them
to make their diagnosis. Reclamations regarding medical devices will not be considered.

Support Policy:
Support does not include:

 support for 3rd party hardware, software, mailing lists or web content
 writing or debugging customer applications and deployments
 detailed explanations of the engineering principles behind our software and hardware
 support for systemic problems beyond the scope of the actual Physilog® and existing systems software

(IT issues, computer operation)

 support for customers whose conduct fails to meet professional standards

Occasionally we engage in more interactive support or consulting. Interactive support is a customer courtesy
and is provided at Gait Up’s discretion. It does not invalidate the support policy described above. There is no
guarantee of performance, timeliness, or establishment of a continuous support relationship. Consulting is
subject to acceptance of a formal statement of work.

4 jan.2017 - Physilog 5 user manual.pdf - v1.1 - Check www.gaitup.com for the latest version. Copyright �2017 Gait Up SA. CH-1015 SWITZERLAND 11

Contact

At Gait Up, we welcome your feedback and questions.

Please contact us at:

EPFL Innov’ Park - C

CH-1015 Lausanne
tel: [phone]

mail: [e-mail]

web: www.gaitup.com

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