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Geosense Laser Tilt90 Preliminary User Manual

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Preliminary User Guide V1.0
Laser Tilt90
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Summary of Contents for Geosense Laser Tilt90

  • Page 1 Preliminary User Guide V1.0 Laser Tilt90...

  • Page 2: Table Of Contents

    Table of contents 1.Important instructions prior to use 2.Device Overview 3.Device Specifications 4. System requirements 5. Equipment Provided 7. Powering up the Device 8. Loadsensing Device Configuration 9. Safely Closing the Device 10. Understanding data 10. 1 Deployment recommendations 10.1.1 Target 10.1.2 Environment 10.1.3 Other 10.2 Pointer accessories...

  • Page 3: Important Instructions Prior To Use

    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: ○...

  • Page 4: Device Overview

    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.

  • Page 5: Device Specifications

    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...
  • Page 6 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 ±...
  • Page 7 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)

  • Page 8: System Requirements

    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.
  • Page 9 Figure 1: LS-G6-LAS-TIL90 elements Figure 2: LS-G6-LAS-TIL90 antenna with N-connector...
  • Page 10 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 ●...

  • Page 11: Powering Up The Device

    Adjustable and swivel mounting bracket have been designed specifically for the LAS-TIL90 node in order to achieve inclination: Description Code Mounting plate for vertical mounting LS-ACC-IN15-VP Horizontal surface mounting plate LS-ACC-IN15-HP Adjustable mounting plate for vertical surface LS-ACC-LAS-AP Swivel mounting bracket LS-ACC-LAS-SB Horizontal surface mounting plate for track monitoring LS-ACC-IN-HPTM...

  • Page 12: Loadsensing Device Configuration

    Note: The Loadsensing Wireless Laser tiltmeter does not have a real-time clock battery to keep time, so it is very important for the device to be powered with batteries when the time is set during installation. Otherwise the device will default to the year 1970 and data will not appear in the gateway.
  • Page 13 Please take note of the following credentials in the Gateway Information Sheet. These will be necessary to perform the radio coverage test: Gateway Information Sheet Mobile app field Default network ID Network ID Default network key Password Default network access password Server password The process for configuring the LASTIL90 node is the same as the other nodes and it is detailed on the WorldsensingApp user guide.
  • Page 14 The app will show information from the two sensors. On the top, tiltmeter readings: the 3-axis inclination measurement with respect to gravity’s direction, its standard deviation (expressed in Gravity) and also the internal temperature of the node. 3-axis Inclination measured by the tiltmeter is calculated as the average of a certain amount of acceleration samples in a period.

  • Page 15: Safely Closing The Device

    9. Safely Closing the Device The wireless Laser tiltmeter has undergone watertightness testing by an external laboratory and has been rating IP68 at 2 m for 2 hours To guarantee water tightness: Lock the box by tightening screws crosswise on the lid. Adjust the screws using a ●...
  • Page 16 In this chapter we will review the laser part, which can be also found at the discontinued LASER node user guide. The Laser node reads and transmits four values: ● Distance in meters ● Temperature in Celsius degrees Gain - the magnitude which expresses the relation between the output signal ●...

  • Page 17: Deployment Recommendations

    If the signal strength of the Laser beam falls into the red area an error will be displayed. For more information, please refer to the Troubleshooting section. 10. 1 Deployment recommendations The signal can be influenced by several factors, such as type or nature of the target and weather conditions of the environment.

  • Page 18: Environment

    Example of Lambertian Reflectance 10.1.2 Environment Environment, luminity, dust, wind and in general any weather condition also a ects the quality of the signal (Signal Strength). The following is a table with a list of typical conditions and how they a ect it. Luminity Implication Cave...

  • Page 19: Other

    10.1.3 Other There are other factors that can a ect also the Signal Strength, here is a list of other parameters that are present in the deployment and should be taken into consideration to determine if the deployment is good enough for the Signal Strength to be within recommended values: ●...
  • Page 20 be too transparent. It is possible to use these bireflex targets applying white and matt tape above the reflective surface. Currently, Loadsensing does not provide pointer accessories, but some recommendations according to the conditions can be seen below. In some applications, we have successfully used target foils from the following supplier: Company: Avery Dennison ( http:/ /graphics.averydennison.eu/ ) Series: Avery 500 Event Film Type: Avery 501 EM - (white, matt)
  • Page 21 GZM27 for fixing to edges and corners GZM26 for measurements on poorly reflective surfaces. Two sided: grey side for shorter distances and brown side for longer GZM30 stick-on target plates for placing on ground markers An additional suitable target will be the one, considering the conditions exposed in the previous paragraphs, with a combination of a white target with black edges.

  • Page 22: Dataserver Visualization

    11. Dataserver visualization When connecting the LASTIL90 to the Dataserver, last readings referred to each of the sensors will be shown. Note that with the LASTILT90 it is possible to calculate the vertical settlement by selecting the formula “vertical settlement”. This formula allows calculating the settlement by doing certain assumptions (such as the target is only a ected by settlement and maintains the inclination) and using the inclination measured by the node with respect to the horizontal plane.
  • Page 23 Besides the vertical settlement formula, there are other conversions that can be done, such applying the distance formulae that allows to convert from meters to other units and also apply an o set, and all the formula for the tiltmeter such as: Angle variation Where: AX: angle variation in degrees...
  • Page 24 : O set in degrees : Multiplicative factor : O set in units Sine generic equation (It is necessary to adjust it for the two axis) Where: : O set in degrees : Multiplicative factor : O set in units : O set in degrees : Multiplicative factor : O set in units...

  • Page 25: Maintenance And Troubleshooting

    12. Errors implemented When an error is returned a new timestamp is registered on the reading error CSV file on the Gateway, the reading file will show blank readings corresponding to that timestamp. There are several errors that can be returned on the CSV file, related to the tiltmeter sensor or the laser distance meter.
  • Page 26 distance (signal strength of the Laser beam is between 512 and 350000 uV). Outside these values, the Laser will return an error. Worldsensing recommends that for deployment in severely dusty environments the Laser node be cleaned if the Signal Strength is lower than 2000 uV. Besides the regular maintenance that may be required and acknowledged by signal strength parameters, the laser tiltmeter would require no maintenance other than normal cleaning, battery replacement and inspection of the seals.

  • Page 27: Battery Life Estimates

    After receiving the device, Worldsensing will inspect the mechanical parts, reassemble and recalibrate the device. If this occurs after expiration of the warranty, Worldsensing will repair the equipment at its factory and may require additional charges for parts and labor charges.

  • Page 28: Data Storage

    Lifetime estimate in years (SF8@20dBm) Sampling Distance =20 m Distance =65 m rate Singapore Barcelona Moscow Singapore Barcelona Moscow 30 s 0,17* 0,05* 5 min 10,5 14,6 10,9 11,9 Table 3: Lifetime estimations in years based on the mathematical model from Saft, for typical Europe radio configuration (Spreading factor 8 and radio transmit power 20 dBm), obtained for 20 m and 65 m considering three di erent temperature profiles.
  • Page 29 To do this, connect an Android device to the data logger Mini USB port with a USB-OTG cable. When Worldsensing App loads, press “Download data” , You need to set a start and end date for the data you want to download or alternatively you can enable “All data”. The Android device allows these CSV files to be opened with applications such as e-mail or cloud apps.

  • Page 30: Safety Instructions

    16. Safety instructions Laser beams emitted by the node are Class 2 according to IEC60825-1: 2014 Radiation safety of Laser products. WARNING Looking directly into the Laser beam with optical aids (e.g. binocular, telescopes) can be hazardous. Looking into the Laser beam may be hazardous to the eyes.

  • Page 31: Laser Classification Certificate

    17. Laser classification Certificate...

  • Page 32: Faqs

    18. FAQs In this section, particular FAQs from TIL90 sensor are not covered. Why using the combination of a laser and tiltmeter sensor? Which advantages present the LASTIL90 in front of the LASER node? The main advantage of the laser tiltmeter node is that it measures distance and at the same time 3 axes inclination.
  • Page 33 the sensor according to reading conditions. See the technical specifications from the sensor. The weather conditions of the deployment can a ect the measurements of the Laser Node. However, the resulting measurements comply with the accuracy of the sensor according to reading conditions.
  • Page 34 measuring conditions to reach the specified accuracy based on the device for certain cases. It is recommended for its use when measuring distances on irregular surfaces or when the environmental light is not ideal, or even when the laser cannot point perpendicular to the surface.

  • Page 35: Contact Worldsensing

    CONTACT WORLDSENSING Need more support? Get in touch with our Customer Success team: Email: industrialsupport@worldsensing.com Phone: +34 93 418 05 85 (08.30h - 16.30h UTC) Want to stay up-to-date about Worldsensing? Sign up for our newsletter: www.worldsensing.com Visit our blog for interesting content: blog.worldsensing.com Download the latest datasheets and infographics: www.worldsensing.com/download-center...

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