Geosense Laser Tilt90 User manual

Preliminary User Guide V1.0
Laser Tilt90
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Table of contents
1.Important instructions prior to use 2
2.Device Overview 3
3.Device Specifications 4
4. System requirements 7
5. Equipment Provided 7
7. Powering up the Device 10
8. Loadsensing Device Configuration 11
9. Safely Closing the Device 14
10. Understanding data 14
10. 1 Deployment recommendations 16
10.1.1 Target 16
10.1.2 Environment 17
10.1.3 Other 18
10.2 Pointer accessories 18
11. Dataserver visualization 21
13. Maintenance and troubleshooting 24
14. Battery Life Estimates 26
15. Data storage 27
16. Safety instructions 29
17. Laser classification Certificate 30
18. FAQs 31
CONTACT WORLDSENSING 34
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1.Important instructions prior to use
Please read these instructions carefully and ensure that the required conditions specified
in this document are met before using the product. Each of our edge devices includes this
information inside the packaging
General warnings
● Follow these precautions to avoid a battery explosion or leakage of flammable liquid or gas:
○ Use the correct battery type. Dispose of the batteries according to instructions. Do not
dispose of the batteries by throwing them into a fire or a hot oven, or mechanically crush or cut
them.
○ Do not leave the batteries in an extremely high-temperature environment.
○ Do not subject the batteries to extremely low air pressure. It may result in an explosion or
leakage of flammable liquid or gas.
○ Do not short circuit the batteries. This will blow the protection fuse.
● Batteries and equipment to be connected via the data port must meet IEC 62368-1 ES1 and PS1
requirements.
● Equipment to be installed in restricted access areas.
Symbol
Description
Caution. Do not proceed until the instructions are clearly understood and all required
conditions are met.
Read the instructions for use carefully before using.
Caution, hot surface.
According to the European Union WEEE Directive 2012/19/EU, this product and its batteries
should not be discarded as unsorted waste.
Please send them to separate collection facilities for recovery and recycling.
It is your responsibility to dispose of your waste equipment and batteries properly. The
correct disposal of your old equipment and batteries will help prevent potential negative
consequences for the environment and human health.
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2.Device Overview
This user guide explains how to configure and operate Worldsensing’s Loadsensing Wireless
Laser Tiltmeter. Further technical descriptions are available in the datasheets .
The Loadsensing Wireless Laser Tiltmeter is a long-range, low-power wireless data logger
with a laser distantiometer sensor and a 3 axes tiltmeter in the same enclosure. It
measures 3-axis inclination with respect to gravity’s direction and reports the two axes of
rotation from the horizontal plane in any orientation.
This device contains the same distantiometer sensor that the laser node has and the
accelerometer sensor than the TIL90-X node.
The wireless laser tiltmeter can be used as a standalone logger for manual monitoring and
can be easily configured by connecting it to an Android phone with a USB cable.
Measurement of tunnel convergence is one of the applications for LaserTilt 90, as it may be
easily relocated along the convergence cross sections up to the excavation front or until
the measured relative displacements are stabilized when the required frequency of
measurements is reduced. It can also be used for measuring deformations in underground
excavations and mining without causing work disruptions and delays.
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3.Device Specifications
Laser Specifications
Value
Measuring range at favorable conditions
0.05 - 150 m
Typical measuring accuracy
+/- 1 mm
Resolution
0.1 mm
Repeatability (1 sigma)
0.15 mm
Laser type (light source)
Visible Laser Class II, Laser with 655 nm
Laser power
0.75-0.95 mW
Time required for a reading
Up to 4 seconds, depending on distance
Time required for a reading
Signal strength
Signal strength and gain are transmitted with each laser
measurement. It can be used for maintenance purposes.
Signal strength
Accuracy
In Favorable
conditions
In unfavorable conditions
@1 m
+/- 1 mm
+/- 2 mm
@10 m
+/- 1 mm
+/- 2 mm
@20 m
+/- 1.5 mm
+/- 3 mm
@50 m
+/- 4 mm
+/- 7 mm
@100 m
+/- 9 mm
+/- 15 mm
@150 m
+/- 16 mm
not applicable
Size of the Laser spot
@5 m
5mm x 2.5mm (smallest value)
@10 m
7mm x 3mm
@20 m
14mm x 6mm
@50 m
35mm x 15mm
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Tiltmeter specifications
Value
Type
Tilt angle calculated from 3-Axis MEMS
accelerometer
Range
±90°
Axes
3-axis inclination measurement with respect to
gravity’s direction. Reports the two axes of
rotation from the horizontal plane in any
orientation.
Accuracy within ± 2⁰
± 0.0025º
Accuracy within ± 4⁰
± 0.005º
Accuracy within ± 15⁰
± 0.013º
Accuracy within ± 45⁰
±0.08º
Accuracy within ± 85⁰
± 0.23º
Resolution
0.0001°
Repeatability
<0.0003°
Oset Temperature dependency
(*)
± 0.002°/°C
Stability @ 14 hours
<0.003°
Time required for a reading
9.6 seconds.
Measure of dispersion
Standard deviation of the set of measurements
collected during the reading and transmitted
with each tilt measurement. It can be used to
filter noisy data.
Temperature sensor resolution
0.1ºC
(*)
Note that temperature dependency can be positive or negative depending on each MEMS sensor manufacturing
process. Temperature dependency is given as the maximum value.
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MEMORY - Circular buer structure
Memory records: Up to 100 000 readings including time, distance and 3-axis tilt measurement.
Mechanical
Box dimensions (WxLxH)
100 x 100 x 61 mm
Overall dimensions
150 x 100 x 61 mm (excluding antenna)
Operating Temperature (º)
-10ºC to +50ºC
Storage temperature (º)
-25ºC to +70ºC
Weather protection
IP68 (at 2m for 2 h)
Weight (excluding
batteries)
841 g
External antenna
100 mm length (including connector)
External port
MiniUSB port for configuration and data access. Can also be used to
power the node
Box material
Aluminium alloy
Batteries
1 or 2
Vibration resistance
Laser modules comply with standard ISO 9022-3, Method 36, Severity 05
(0.15mm, 10Hz..55Hz)
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4. System requirements
The LASTIL90 is:
- available from version 2.56 onwards
- Needs to be configured by using the Worldsensing App (instead of the Dlog)
- CMT Edge version: from firmware version 2.5/2.5.1 onwards
- CMT Cloud version: from firmware version 1.6.0 onwards
5. Equipment Provided
The wireless laser tiltmeter (LS-G6-LAS-TIL90) has the following elements:
1. Metallic casing
2. USB connector
3. RP N Female connector, which complies with Federal Communications Commission
(FCC) regulations, for the sensor network radio antenna
4. Pressure stabilizer for protection against condensation (protective vent)
5. Connector male RP N to RP - SMA male and aerial with RP - SMA male
6. Antenna
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Figure 1: LS-G6-LAS-TIL90 elements
Figure 2: LS-G6-LAS-TIL90 antenna with N-connector
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The LS-G6-LASTIL90 can also be equipped with a more robust antenna, placed
horizontally, instead of the standard L-antenna that is installed vertically. Please contact us
for more details.
The following elements are sold separately:
● Mounting supports. See the mounting instructions for each support
● USB-OTG configuration cable
● Batteries
6. Wireless LS-G6-LASTIL90 installation
The first task of getting your Loadsensing Laser Tiltmeter node up and running on your site
is to install it. There are three major factors to consider when installing the node: the
various supports you might use according to the application, the mounting of the Laser
Tiltmeter node, and powering the node once it is installed. We discuss each of these three
here.
6.1 Supports
The Laser Tiltmeter node needs to be mounted on a support. Depending on the application,
it needs to be installed with a certain inclination to achieve curved surfaces and on others
applications it can be just installed aligned to the surface.
Wireless Laser tiltmeters can be mounted horizontally or vertically, depending on the
monitoring objective. Please note that the accessories designed for the TIL90 are also
included on the list below and are compatible with the LAS-TIL90.
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