Watch this webinar to learn how educational institutions are inspiring the next generation of surveyors using GeoSLAM handheld LiDAR scanners.
Hear from three guest speakers from different Universities and Colleges across the world discussing their own individual experiences uses handheld LiDAR scanners to support education and inspire their students.
What is SLAM?
How it powers GeoSLAM technology
Why use GeoSLAM for Education?
Insights from Ángel A. García Jr, James Madison University
Insights from Blair Bridger, College of the North Atlantic
Smarter Construction: Benefits of Handheld SLAM Mapping
Monitoring construction progress comes with many challenges and we’d like to help you solve them with SLAM mapping. Watch this webinar to learn how to track the progress of small and large construction projects using mobile LiDAR and automated analytics.
What is SLAM?
The main challenges when monitoring construction progress
How can handheld SLAM mapping solve these challenges in small and large projects?
Understand how to map larger spaces with GeoSLAM’s ZEB scanners
GeoSLAM Volumes: Stockpile Volume Measurements Made Easy
Handheld laser scanners can determine accurate stockpile volume and tonnage measurements without the need for GPS. Walk and scan, or attach the scanner to a drone, pole, or vehicle for remote monitoring of hazardous environments. GeoSLAM’s Volumes software automates data processing to turn your scan data into actionable graphical and numerical data for real-time decision making to effectively monitor and manage your stockpiles.
GeoSLAM Volumes – what is it, main uses and key features
How to automatically process the captured data
View the volume and tonnage results in the data output
How Using Micro Hydro Power Generation Produces Clean Energy
Discussions around climate change, and how we can lessen our environmental impact, have become increasingly more relevant in recent years. This has driven some companies and communities to explore different ways of producing renewable technologies, to reduce dependency on fossil fuels. One method for gathering renewable energy is by using Micro Hydro power generation.
Hydroelectric power generation relies on a constant water cycle. Nature is perpetually replenishing this, making it a good clean source of energy. This method of producing electricity using hydroelectric power generation is what the Congleton Hydro Project has set out to achieve.
Dane Valley Community Energy Ltd (DVCE), a non-profit community benefit society, developed and constructed the project. DVCE is a volunteer led organisation, run by a small team of volunteer directors, who have all worked within Engineering and Management Companies. Funded by the community of Congleton, the project aims to generate enough carbon-free electricity, using hydroelectric power generation, to power 60 homes within this local area.
Utilising an Archimedean Screw for Micro Hydro Power Generation
For this project, the team set up a Micro-Hydro System, including an Archimedean Screw. The hydroelectric energy is generated by the nearby Havannah Weir River. The energy is extracted by using the water flow to turn the Archimedean Screw, which is connected to an electrical generator. Having constructed the whole system in just 12 months, DVCE were able to produce their first load of electricity in a relatively short space of time.
The area surrounding the Archimedean Screw required significant and extensive ground works, together with a substantial walkway, powerhouse, and piped water inlet system. Whilst designing the project, it became apparent that a core worry would be movement of the terrain, due to weather and time. As a result, they decided they needed to frequently monitor this surrounding area.
The Archimedean Screw has a life expectancy of 40 years, and the team hope to make returns on their investments in the next 20 years. In addition to generating clean energy, a core objective is to generate an annual surplus, which will fund the local community. It is therefore essential that any change in land stability does not impact the planned generation. The team decided that a monitoring system would help identify any movement so that timely corrective action could be taken.
Tracking Changes in the Land and Facilities Management
Via a family member (Dr Jonathan Owen), the team acquired a 3D handheld laser scanner, GeoSLAM’s ZEB Go. The handheld nature of the scanner will mean they can track land movement and vegetation rates over time. In addition, they can map the on-site building to help with facility management and storage.
GeoSLAM Connect’s Stop and Go Alignment can help the team align these scans, as it would give them a more accurate view of the exterior and interior areas together.
GeoSLAM technology is ideal for this type of work, due to the uneven terrain. The mobile device can map an area by simply walking around, whereas systems that require a more complicated setup would struggle to scan the area promptly.
The Benefits of GeoSLAMs Technology
The ZEB Go’s speed of capture enables DVCE to carry out scans of the 100m x 100m area surrounding the Micro-Hydro System in just 25 minutes. As the team are detecting change in the ground movements and vegetation, they can frequently scan the area to track any issues that may arise. A great way to document the area, as frequently as DVCE need.
The ZEB Go’s ease of use means the team would not need to be survey trained for the scan, unlike more complicated to use scanning hardware. Further, the ZEB Go’s capabilities save all the team from having to repeatedly return to the site, as just one individual is needed.
The team were impressed with the ease that the ZEB Go was used to survey the complete site, with no tripods being needed and no complicated set up.
Creating Accurate Georeferenced Point Clouds
Whilst capturing the data, the team laid down control points using a GNSS receiver. This allowed the team to georeference the data using GeoSLAM’s software. Now the surveying pins are in place, the team can simply georeference the data for each scan they conduct.
Implementing control points was important for DVCE as it allows for clear comparisons between multiple scans of the same area. Georeferenced data places the scan in the real world and makes the data even more accurate. This will benefit the team as they continue to scan the Micro-Hydro System’s surrounding areas in the future and detect any gradual change.
The ZEB Go delivered an accurate 3D replica of the area that continues to help DVCE in their project. The versatility of the ZEB Go and resulting point cloud means the team can look into new ways to interpret the data – protecting this vital equipment for both the environment and local community.
Jonathon was the lucky winner of our ‘Win a ZEB Go Competition’ at GeoBusiness 2021.
If you’d like to learn more about how GeoSLAM solutions can help you, submit the form below.
Introduction to Handheld Laser Scanning
Handheld laser scanning has become a crucial tool for many businesses who need to collect geospatial data. Compared to the more traditional methods, handheld laser scanning is considerably more efficient and makes it much easier to navigate through difficult spaces such as underground or narrow passages. GeoSLAM handheld LiDAR mapping solutions use next generation SLAM technology to simultaneously localize and map a space up to 10 times faster than traditional methods.
If you’re new to handheld laser scanning or think your company could benefit from this technology, then this webinar is for you.
What is a handheld laser scanning and how does it compare to a static scanner
Which industries are using this technology and how are they using it?
Control points are points within a given area that have known coordinates. They are a key tool in the geospatial industry and can be utilised in a variety of ways, including georeferencing point clouds and aligning aerial images to terrestrial data. By using control points, surveyors are able to accurately map larger areas and position overlapping surveys of an area together. They can also be used in non-geospatial industries, such as construction and mining, to show clear temporal comparisons between multiple surveys of the same area. This method of georeferencing is also referred to as adjust to control.
Previously, checkerboards and spherical targets have been used as control markers – these items are captured in surveys and can be identified for georeferencing or aligning. The main drawback with these methods is that they rely heavily on human interpretation when processing, meaning that the processed datasets may be susceptible to an increased amount of error.
When capturing handheld surveys, GeoSLAM systems are able to collect reference points. These can then be matched with known control points to reference scans and increase the level of accuracy.
What makes GeoSLAM referencing different?
More accurate: GeoSLAM scanners are used with known control points and survey grade pins, rather than more traditional moveable targets. This reduces the margin of error within point clouds.
Save time: using known survey control points means there is no need to manually position individual targets before every scan. Data capture can then be repeated regularly, faster, easier and with no concerns that reference points are captured in different places each time.
Safer: in dangerous or inaccessible areas, targets are not required to be physically positioned on pre-defined control points prior to each scan. This reduces the time exposed to hazards and unsafe areas.
Industries using control points
Easily reference point clouds and produce reports highlighting accuracy values.
Regularly monitor site operations (e.g. stockpiles) and hazards.
Compare changes over time and map progress onto predetermined CAD/BIM models.
Point clouds with endless possibilities
Once georeferenced using control points, point clouds can be optimised further using leading third party software:
Comparisons with existing CAD/BIM models
Point cloud to point cloud registration showing changes over time within a given area
CAD/BIM model creation
For more information about our third party partnerships, head to our integrations page.
Keep up to date with the latest news and thought leadership from GeoSLAM.
Increasing Productivity in Architecture with Mobile Mapping
In this webinar we are joined by GeoSLAM customer SLA Architects. Jordan JD Dixon is an Architect who specialises in renovation work. SLA wants to stay on the cutting edge of technology, and were using some of the traditional tools like laser distance measures and phone photography, their goal was to improve on accuracy.
Learn about the GeoSLAM ZEB Family of laser scanning solutions
How GeoSLAM technology fits into BIM-LOD
Learn about SLA architects, the type of work they do and the role of GeoSLAM technology in their workflow
Iowa Department of Transport uses SLAM to create 3D models of salt stockpiles
10 mins per scan
Words by Tina Greensfield | Iowa DOT
At Iowa State DOT (Department of Transport) it is our job to make sure over 24,000 miles of road remains clear and safe to use in winter. We have 109 maintenance areas across the state where stockpiles of salt are kept for distribution. Each facility can each hold up to 1200 tonnes.
Throughout winter salt is loaded onto trucks and spread on roads to stop the surface from freezing. Pay loads are measured in weight as salt is loaded onto spreading trucks and supplies are depleted. But as the salt is used, there is a clear discrepancy between the volume of salt in the shed and the paper records – it is not reliable to just look inside a half-empty shed and assess how much material remains.
If volume of salt is too low or we don’t know how much is available, we may find ourselves forced to make snap decisions about redistribution which is both costly to the state and inconvenient to residents and businesses alike.
We needed another solution and following a few severe winters where salt reserves around the country ran out, the Great Lakes froze and shipments were halted we were determined to invest in a reliable measuring process for managing stockpiles in future, which led us to a GeoSLAM volumes solution.
“In terms of speed and accuracy, this was a real game changer for us!“
Using the handheld SLAM device, we can produce a three-dimensional model of the stockpile in just a few minutes. We have never experienced this level of accuracy before and capturing data was as easy as surveying the site with the naked eye.
The surface of the stockpile is very uneven with lumps on one side and big cliffs on the other where loaders have dug-out salt for spreading, in the past our ‘best guess’ used to involve looking at the stockpile against some markers on the walls of the shed which provided limited accuracy to say the least, so this was a real game changer for us.
Data is then processed using GeoSLAM Hub and imported to the volumes software. As the granules vary in size, we apply a bulk density value as well as defining a floor and perimeter of each pile calculate the total volume of the stockpile in tonnes.
From start to end, the entire process took around twenty minutes. We now have depot staff going out and scanning the stockpiles regularly. This new level of insight means we don’t have to worry about compromising road users’ safety across the state of Iowa as we always know what volume of salt we have available to use.