Ubisense DIMENSION4 Mini-tag User manual

Ubisense DIMENSION4™
Mini-tag User Guide
Tuesday, July 26, 2022
Ubisense Limited, St Andrew's House,StAndrew's Road, Cambridge CB4 1DL, United Kingdom.
Telephone: [phone].Website: http://www.ubisense.net.

Copyright © 2022, Ubisense Limited 2014 - 2022. All Rights Reserved. You may not
reproduce this document in whole or in part without permission in writing from Ubisense
at the following address:
Ubisense Limited
St Andrew’s House
St Andrew’s Road
Cambridge CB4 1DL
United Kingdom
Tel: [phone]
WWW: https://www.ubisense.com
All contents of this document are subject to change without notice and do not represent
a commitment on the part of Ubisense. Reasonable effort is made to ensure the accuracy
of the information contained in the document. However, due to on-going product
improvements and revisions, Ubisense and its subsidiaries do not warrant the accuracy of
this information and cannot accept responsibility for errors or omissions that may be
contained in this document.
Information in this document is provided in connection with Ubisense products. No
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Page i
Contents
UbisenseMini Tags 1
Features of Mini Tags 2
Activating Mini Tags 3
Putting Mini Tags into Deep Sleep 4
Putting a Tag into a Deep Sleep 4
Replacing the Battery of a Mini Tag 5
Suggested Tools 5
Battery Replacement Process for Mini Tags 6
Opening the Enclosure 8
Removing the Old Battery 10
Fitting the New Battery 11
Resealing the Enclosure 12
Modifying an Off-the-shelf Battery 13
Removing the Spot-Welded Support Pins 13
Trimming the Formed Terminals 14
Disposing of Batteries 18
Resetting the Battery History 19
Regulatory Information 20
Regulatory Information for the United States of America 20
Regulatory Information for Europe 20
Regulatory Information for Canada 21

UbisenseMini Tags
Ubisense Mini Tags
The Ubisense DIMENSION4 Mini Tag (D4FLAT33) is a small self-contained tracking tag, intended
for high-accuracy tracking of smaller objects or people. Mini Tags are mechanically strong and
resistant to dust and water. Additional features of Mini Tags are:
lan LED for easy status identification
la motion detector to instantly activate a stationary tag
la magnetic reed switch to trigger context-sensitive events
la replaceable battery
A variety of mounting methods allow the Mini Tag to be securely attached to a wide range of
objects.
Haptic Feedback
Ubisense DIMENSION4 Mini Tags are available with haptic feedback integrated into the same
small-sized tag, useful for providing immediate feedback if the tag is worn or carried by a worker.
1

Features of Mini Tags
Features of Mini Tags
The features of Mini Tags are shown in the following figure.
Features of Mini Tags
Feature Description
A. Magnetic Reed Switch Reed switch you can use to activate the tag and put it back into the
deep sleep state. You can use any reasonably strong magnet (for
example a fridge magnet) for these purposes.
Note that the reed switch is red in color and visible through the
transparent case of the tag.
B. LED The tag has an LED, which flashes when it is active.
2

Activating Mini Tags
Activating Mini Tags
To preserve the battery, Mini Tags are shipped in the deep sleep (deactivated) state.
Before you use a tag for the first time, it must be woken up (activated) from the deep sleep state.
To activate a tag:
1. Hold a strong magnet (such as a fridge magnet) against the reed switch. The LED lights up.
2. Continue to hold the magnet for a few seconds. The LED does a dim to bright transition,
and then starts blinking.The tag is now activated and ready to be used.
3

Putting Mini Tags into Deep Sleep
Putting Mini Tags into Deep Sleep
If a tag is activated, you can put it back into the deep sleep state at any time to preserve the
battery.
It is not possible to accidentally put a tag into deep sleep because the tag sets a 'challenge' and
expects a 'response'. The LED will blink one or more times and you respond by pressing the
button or swiping the magnet on the tag the same number of times. The tag then repeats the
challenge and you respond again. After the second challenge and a successful response, the LED
blinks brighter than normal and then switches off indicating the tag is now in deep sleep.
Putting a Tag into a Deep Sleep
To put a tag into the deep sleep state:
1. Hold a strong magnet (such as a fridge magnet) against the reed switch for a few seconds.
The LED stops blinking in readiness for the first challenge.
2. Remove the magnet from the reed switch. Count the number of times the LEDblinks. This
can be from two to five blinks.
3. Hold against and then remove the magnet from the reed switch the same number of times.
Count the number of times the LEDblinks.
4. Repeat Step 3. The LED on the tag does a dim to bright transition, and the tag enters the
deep sleep state (the state in which it was shipped).
Note: If you hold and remove the magnet from the reed switch the wrong number of times
during Steps 3 and 4, the tag starts blinking again. If this occurs, restart the process as described
in Step 1.
4

Replacing the Battery of a Mini Tag
Replacing the Battery of a Mini Tag
This section explains how to replace the batteries of Ubisense Mini Tags.
Tag parameters are retained when the power source is removed from the tag.
Suggested Tools
Torque Driver and Bit
To prevent risk of damage to the enclosure we recommend the use of a good quality torque
driver; the screws only require a relatively low torque so the trick is to find a driver that goes low
enough.
We recommend the Wera 7440 Torque driver, which can be set from 30cNm – 1.2Nm:
Wera 7440 Torque driver
The wide torque range means this driver is also suitable for use with the Industrial Tags, which
require a torque of 0.8Nm. If you are only ever replacing the batteries in the D4FLAT33 tag then
you may also want to consider the lower-cost Wera 7460 Torque driver, as this is pre-set to
30cNm.
When selecting a bit to use with this driver ensure the body of the bit does not cause damage to
the enclosure. We recommend Wera part reference 05059910001:
5

Replacing the Battery of a Mini Tag
WERA bit with long neck
The long neck, which is narrower diameter than the head, prevents damage to the enclosure
during removal or subsequent replacement of the screws.
Non-Conducting Spudger
A non-conducting (plastic) screwdriver or a sharp-edged spudger can make removal of the
original battery easier:
Non-conducting spudger
The sharp end should be small enough to fit into the enclosure without interfering with any of the
small components present on the carrier PCB.
Battery Replacement Process for Mini Tags
The process for replacing batteries in Mini Tags is shown in the following figure.
6

Replacing the Battery of a Mini Tag
Process for Replacing Batteries in Mini Tags
7

Opening the Enclosure
Opening the Enclosure
The first step is to loosen and remove the six screws that hold the enclosure together. You should
use a PZ1 driver, with as narrow a diameter as possible; see Suggested Tools for a recommended
part.
Remove the six screws and place to one side:
Removing the Screws
Turn the enclosure over and remove the front part of the enclosure. Take care not to catch the
antenna (highlighted in the red circle) that is located underneath the Ubisense logo on
the enclosure:
Removing the Front Part of the Enclosure
Optionally you can also remove the gasket, placing this to one side; this makes it easier to access
the underside of the battery in the next step:
8

Opening the Enclosure
Removing the Gasket
The battery is now exposed and ready for removal from the two connectors.
9

Removing the Old Battery
Removing the Old Battery
Two circular connectors hold the battery terminal leads in place:
Easing the Leads out and Releasing the Battery
The terminals are sprung-loaded, ensuring a good electrical connection even when subjecting
the tag to shock or vibration. Use a non-conductive plastic screwdriver or “spudger” to ease the
leads out carefully and release the battery by pushing the sharp end under the edge of the
battery and then applying light leverage against the edge of the enclosure. Take care not to
damage the small component that is located between the terminals; ideally try to apply
force to each of the corners in turn, carefully lifting the battery away from the PCB.
10

Fitting the New Battery
Fitting the New Battery
You should be using one of the Ubisense spare parts (part code FLATBAT), or have modified an
off the-shelf battery according to the instructions provided in Modifying An Off-The-Shelf Battery.
To fit the new battery, align the two leads with the connectors on the PCB and gently push the
battery down until the bottom of the battery is in contact with the PCB:
Fitting the New Battery
Take care not to accidentally bend either of the battery leads while pushing it down into place.
You should also avoid contact with the antenna (highlighted in the red circle) to avoid risk
of bending or snapping it.
11

Resealing the Enclosure
Resealing the Enclosure
Inspect both sides of the gasket and ensure there are no rips or tears. Blow any dust or other
contaminants from each of the surfaces. Replace the gasket back onto the enclosure, around the
battery, aligning the openings of the gasket with the screw bosses; the gasket is reflectively
symmetric, so it does not matter which way around you fit it as long as it aligns with the bosses in
the enclosure.
Check the exposed surface does not have any dust or other contaminants present on it and then
replace the rear half of the enclosure, ensuring that the screw bosses align with the gasket and
front-half of the enclosure. If there is any dust present, it may be blown away, ideally using
compressed air.
Using a good-quality torque driver, reseal the enclosure:
Resealing the Enclosure
Replace each of the screws in turn into the openings in the back of the enclosure and tighten
them to a torque of 0.3Nm (30cNm); take care not to over-tighten them to avoid any damage to
the enclosure.
Once you have tightened all six screws, you may optionally use a set of calipers to verify the
enclosure is providing the correct compression to the gasket: the overall thickness of the
assembled enclosure should be 14mm (within a tolerance of +/-0.05mm) across the full
length. If any of the areas near a screw are thicker than this, verify the screw at that
position is at the correct torque.
12

Modifying an Off-the-shelf Battery
Modifying an Off-the-shelf Battery
The D4FLAT33 tag uses a customized version of the EVE EF651625 prismatic cell. The Ubisense
part code for a replacement battery is FLATBAT. When bought “off-the-shelf”, this battery is a
four-terminal device:
EVE EF651625 prismatic cell
To prepare this battery for use with the D4FLAT33 tag, you will need to remove the two spot-
welded support pins and trim two formed-contacts to the correct length.
Removing the Spot-Welded Support Pins
To remove the two spot-welded support pins you will need a pair of needle-nosed pliers:
Needle-nosed pliers
13

Modifying an Off-the-shelf Battery
Safety Note: Ensure you are wearing eye protection and that you are working away
from other people, as these terminals can ping-off the body of the battery in an
unpredictable way!
Use the pliers to grip along the pin and then gently twist around the weld to snap it:
Modifying Support Pins
The contact should lift away from the battery. Note that both contacts are at the same voltage
(ground), so it does not matter if you accidentally touch the neighboring contact during this
operation.
Trimming the Formed Terminals
Safety Note: The other two contacts supply the voltage from the battery; you must
take care not to accidentally short them together as the battery is capable of
supplying quite high currents!
We recommend the use of a simple jig to assist with the removal of the battery contacts. If you
have access to a 3D printer, you can download STL data to print this for yourself, or Ubisense can
supply a printed version for a small fee.
This picture shows the underside of the jig:
14

Modifying an Off-the-shelf Battery
Underside of jig
The thickness of the body of the jig defines the length of the battery leads; do not apply any
scaling when printing the part! The rib helps prevent accidental shorting of the battery leads
during cropping.
Push the battery leads through the jig from the opposite side to the one with the rib, taking care
not to bend the leads or stab your fingers:
15

Modifying an Off-the-shelf Battery
Pushing battery leads through the jig
You should use a good-quality pair of flush-fit side-cutters, as shown below:
Flush-fit side-cutters
Turn the jig over, with the battery in place and keeping it pushed flush to the flat surface. Using
the side-cutters, trim the battery contact flush with the underside of the jig:
16

Modifying an Off-the-shelf Battery
Trimming first battery lead
When trimming the battery lead keep the cutters below the top surface of the rib to minimize the
risk of accidentally shorting the two battery leads. Repeat the process for the second battery lead:
Trimming second battery lead
Discard the unused battery contacts carefully. You now have a suitable battery for the
replacement procedure described in Battery Replacement Process for Mini Tags.
17