Autonomous Greenhouses

In greenhouses, many aspects of growing can already be controlled in various ways. So, what if you could develop a fully autonomous cultivation method that could be applied to any greenhouse, anywhere in the world? That’s the ambition of the WUR researchers working in the field of Autonomous Greenhouses.

What the future of greenhouses looks like

Our world’s growing population and changing climate press us to find the most efficient production methods for our crops. Greenhouse horticulture plays an important role in the year-round production of fresh and healthy fruit and vegetables with a consistently high quality. Cultivation in greenhouses must be efficient in the use of natural resources, economically viable, and produce a high quality product according to tight planning. However, the limiting factor is becoming the availability of sufficient highly qualified staff with knowledge to cultivate a high-quality product and who can oversee all aspects of an efficient production system with minimal use of resources.

We are working towards an autonomous greenhouse in which cultivation is controlled remotely via artificial intelligence, with the help of intelligent sensors and measurements of crop characteristics, and in which automatic systems handle crops to achieve a sustainable and profitable cultivation system.

How we do it

We bring together all the knowledge needed to make the ultimate future-proof greenhouse a reality: one that requires minimal human labour, minimal inputs in terms of scarce resources like water and nutrients, but maximal efficiency and outputs, and is applicable all over the world. As the international hub of fundamental knowledge in life sciences, our in-house experts work on plant physiology, sensor technology and vision, machine learning and robotics, and advanced new technologies such as digital twins. State-of-the-art research facilities in Wageningen and Bleiswijk allow us to combine system knowledge, integration, and validation under one WUR roof.

Plant physiology

Plant physiology aims to contribute to the understanding of how plants function, such as the processes that happen in plants in response to changes in their environment and how they adapt to stresses.

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Crop Modelling

Environmental factors, such as light, have an effect on crop growth and yield. We use simulation models to research these effects in crops grown in greenhouses and vertical farms.

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Physical modelling

The application of physical models is a way to predict the greenhouse climate based on the principles of calculating heat and mass balances. Its components, such as absorption of solar and artificial light, heating, crop transpiration, condensation, and ventilation, follow well-known laws of physics. With computations based on these highly predictable processes, we can define and implement resource-use efficient climate control strategies.

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Digital twins

Digital twins use data-integration, artificial intelligence (AI), and machine learning to create a virtual version of a crop. These simulation models are continuously fed real-time information from the actual circumstances in a greenhouse, making it possible to analyse and simulate processes and reactions of plants more accurately. With the help of digital twins, we can better monitor plants and predict future scenarios.

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Spectral Imaging

Multi- and hyperspectral imaging methods are some of the most powerful to measure constituents, stress, and disease symptoms in plants. Spectral imaging offers a wealth of information to detect objects and their location thanks to not only one, but a whole spectrum of values available per pixel. Using spectral imaging in combination with models, we can measure the spatial distribution of dry matter content, nitrogen status or sugar concentration, and even lycopene or chlorophyll concentration.

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Sensor technology

Non-invasive sensors can measure and monitor a variety of plant traits and climate conditions in greenhouses. The data provides insights to constantly improve the conditions in the greenhouse and support management decisions. Sensors have also shown potential for detecting plant diseases.

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Robotic systems in greenhouses need to be able to work in a highly challenging environment and deal with complex products that show a lot of variation and change in time (grow or ripen, for example). We design robotic systems combining hardware and software to a functioning robot that can think, sense, and act in such conditions.

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Machine Learning (AI)

The learning capacity of a robot is a key part of their intelligence. It is possible to discover patterns using machine learning, for instance in photographs. When given a large number of training data sets, the artificial intelligence automatically learns how to teach itself not only what is in the image but also where it is. The ability of machine learning to handle the high degree of diversity found in natural products is a key strength. Machine learning can also be used, for example, to teach a robot to grip objects or determine yield predictions.

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Computer Vision

How do robots or other automated systems see data and turn it into actionable information? We can accurately analyse data to shape models, and models to objective information, using computer vision techniques. By assessing characteristics such as product size, surface flaws, leaf area, or stem length, we are able to automatically recognise different plant attributes (phenotyping).

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