Machine learning: It’s all about the data
By Andy Brown06 August 2020
When it comes to the construction industry machine learning means many things. However, at its core, it all comes back to one thing: data.
The more data that is produced through telematics, the more advanced artificial intelligence (AI) becomes, due to it having more data to learn from. The more complex the data the better for AI, and as AI becomes more advanced its decision-making improves. This means that construction is becoming more efficient thanks to a loop where data and AI are feeding into each other.
Data is the fuel for artifical intelligence
Machine learning is an application of AI that provides systems the ability to automatically learn and improve from experience without being explicitly programmed. As Jim Coleman, director of global IP at Trimble says succinctly, “Data is the fuel for AI.”
Coleman expands on that statement and the notion that AI and data are in a loop, helping each other to develop. “The more data we can get, the more problems we can solve and the more processing we can throw on top of that, the broader set of problems we’ll be able to solve,” he comments.
“There’s a lot of work out there to be done at AI and it all centers around this notion of collecting data, organising the data and then mining and evaluating that data.”
Karthik Venkatasubramanian, vice president of data and analytics at Oracle Construction and Engineering agrees that data is key, saying, “Data is the lifeblood for any AI and machine learning strategy to work. Many construction businesses already have data available to them without realising it.
“This data, arising from previous projects and activities, and collected over a number of years, can become the source of data that machine learning models require for training. Models can use this existing data repository to train on and then compare against a validation test before it is used for real world prediction scenarios.”
There are countless examples of machine learning at work in construction with a large number of OEMs having their own programmes in place, not to mention what’s being worked on by specialist technology companies.
One of these OEMs is US-based John Deere. Andrew Kahler, a product marketing manager for the company tells International Construction that machine learning has expanded rapidly over the past few years and has multiple applications.
“Machine learning will allow key decision makers within the construction industry to manage all aspects of their jobs more easily, whether in a quarry, on a site development job, building a road, or in an underground application. Bigger picture, it will allow construction companies to function more efficiently and optimise resources,” says Kahler.
He also makes the point that a key step in this process is the ability for smart construction machines to connect to a centralised, cloud-based system – John Deere has its JDLink Dashboard, and most of the major OEMs have their own equivalent system.
“The potential for machine learning to unlock new levels of intelligence and automation in the construction industry is somewhat limitless. However, it all depends on the quality and quantity of data we’re able to capture, and how well we’re able to put it to use though smart machines.”
Construction equipment automation specialist
US-based Built Robotics was founded in 2016 to address what they saw as gap in the market – the lack of technology being used across construction sites, especially compared to other industries. The company upgrade construction equipment with AI guidance systems, enabling them to operate fully autonomously.
The equipment that the company typically works with are: excavators, bulldozers, and skid steer loaders. The equipment can only work autonomously on certain repetitive tasks; for more complex tasks an operator is required.
Erol Ahmed, director of communications at Built Robotics says that founder and CEO Noah Ready-Campbell wanted to apply robotics to where it would be really helpful and have a lot of change and impact, and thus settled on the construction industry.
Ahmed says that the company are the, “only commercial autonomous heavy equipment and construction company available.” He adds that the business – which operates in the US and has recently launched operations in Australia – is focused on automating specific workflows.
“We want to automate specific tasks on the job site, get them working really well. It’s not about developing some sort of all-encompassing robot that thinks and acts like a human, and can do anything you tell it to. It is focusing on specific things, doing them well, helping them work in existing workflows. Construction sites are very complicated, so just automating one piece is very helpful and provides a lot of productivity savings.”
Ahmed confirms that as long as the equipment has an electronically controlled hydraulic system converting a, for example, Caterpillar, Komatsu or a Volvo excavator isn’t too different. There is obviously interest in the company as in September 219 the company announced it had received US$33 million in investment, bringing its total funding up to US$48 million.
Artificial intelligence aids construction ‘smartification’
Of course, a large excavator or a mining truck at work without an operator is always going to catch the eye, and our attention and imagination. They are perhaps the most visual aspect of machine learning on a construction site, but there are a host of other examples that are working away in the background.
As Trimble’s Coleman notes, “I think one of the interesting things about good AI is you might not know what’s even there, right? You just appreciate the fact that, all of a sudden, there’s an increase in productivity.”
AI is used in construction for specific tasks, such as informing an operator when a machine might fail or isn’t being used productively to a broader and more macro sense. For instance, for contractors planning on how best to construct a project there is software with AI that can map out the most efficient processes.
The AI can make predictions about schedule delays and cost overruns. As there is often existing data on schedule and budget performance this can used to make predictions – and these predictions will get better over time. As we said before; the more data that AI has, the smarter it becomes.
Venkatasubramanian from Oracle adds that ‘smartification’ is happening in construction, saying that, “Schedules and budgets are becoming smart by incorporating machine learning-driven recommendations.
“Supply chain selection is becoming smart by using data across disparate systems and comparing performance. Risk planning is also getting smart by using machine learning to identify and quantify risks from the past that might have a bearing on the present.”
Construction technology adoption to increase
There is no doubt that construction has been slower than other industries to adopt new technology but this isn’t just because of some deep-seated reluctance to new ideas.
For example, agriculture has a greater application of machine learning but it is easier for that sector to implement it – every year the task for getting in the crops on a farm will be broadly similar.
As John Downey, director of Sales EMEA, Topcon Positioning Group, explains, “With construction there’s a slower adoption process because no two projects or indeed construction sites are the same, so the technology is always confronted with new challenges.”
Downey adds that as machine learning develops it will work best with repetitive tasks like excavation, paving or milling but thinks that the potential goes beyond this. “As we move forward and AI continues to advance, we’ll begin to apply it across all aspects of construction projects.
“The potential applications are countless, and the enhanced efficiency, improved workflows and accelerated rate of industry it will bring are all within reach.”
Automated construction equipment needs operators to oversee them – as this sector develops it could be one person for every three or five machines, or more, it is currently unclear. With construction facing a skills shortage this is an exciting avenue. There is also AI which helps contractors to better plan, execute and monitor construction projects – you don’t need to have machine learning type intelligence to see the potential transformational benefits of this when multi-billion dollar projects are being planned and implemented.
Electric mining automation
Sany sees two electric unmanned mining trucks link up with 5G controlled excavator
China-based OEM Sany has reported that two units of electric unmanned SKT90E wide-body mining trucks successfully realised a
connection with a 5G remote controlled excavator, meaning that the task could be completed with no danger to any operators.
These two SKT90E wide-body mining trucks were said to have demonstrated high-level environmental identification and positioning capacity, conducting timely decision making and accurate route planning in the operation field.
The deviation of the horizontal control of the unmanned operation can be kept under 30cm and the truck can independently complete route-tracking, load and unload of materials, and parking.
With the support of an integration of multiple sensing technologies including millimeter-wave radar, laser radar, and visual sensor, the truck can conduct the scanning and tracking of obstacles within 150m. It can also implement distance ranging and identification within 100m in response to different weathers in different seasons.
According to the company, intelligent decision-making includes the automatic creation of the three-dimensional map of routes in the mine with laser radar, independent obstacle avoidance and optimisation of driving routes with dynamic simulation.
Using AI to cut costs and emissions
Contractor Skanska and Volvo CE working together on AI project
Skanska announced earlier this year that it had teamed up with Volvo Construction Equipment (Volvo CE), a research organisation and a software company to use AI to help better coordinate the movement of heavy machinery on construction sites.
The company said that excavators, loaders and haulers can waste up to 40% of their time idling while operators wait for their slot to work, and that optimising the deployment of machinery through AI would cut emissions, cost and boost productivity.
The goal is for every construction machine to know where the others are, what they are doing and the most optimal way to self-organise.
The consortium, which includes research organisation SINTEF and construction software company Ditio – which Skanska partly owns – will use equipment operating data to manage machinery automatically on sites with machine learning, route optimisation and AI.
“The number of simultaneous operations in a large civil engineering project is very comprehensive and complex, so this project will give the construction managers solid real-time decision support,” said Lars Horn, project leader with Skanska Norway.
“Once the algorithms can handle the simple tasks, supervisors will have more time available to use their skills to solve the most demanding bottlenecks.”
The project is currently testing algorithms on a live highway project in Norway and will do so until 2022.
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