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Robots as helpers within the lettuce harvest

Robotic answer for automating the lettuce harvest

Lettuce is a invaluable crop in Europe and the USA. However labor shortages make it tough to reap this invaluable area vegetable, as sourcing adequate seasonal labor to fulfill harvesting commitments is likely one of the sector’s largest challenges. Furthermore, with wage inflation rising quicker than producer costs, margins are very tight. In England, agricultural know-how and equipment specialists are working with IDS Imaging Improvement Methods GmbH (Obersulm, Germany) to develop a robotic answer to automate lettuce harvesting.

Robot solution for automating the lettuce harvest

The group is engaged on a challenge funded by Innovate UK and contains specialists from the Grimme agricultural equipment manufacturing unit, the Agri-EPI Centre (Edinburgh UK), Harper Adams College (Newport UK), the Centre for Machine Imaginative and prescient on the College of the West of England (Bristol) and two of the UK’s largest salad producers, G’s Contemporary and PDM Produce.

Throughout the challenge, present leek harvesting equipment is tailored to carry the lettuce clear from the bottom and grip it in between pinch belts. The lettuce’s outer, or ‘wrapper’, leaves might be mechanically eliminated to show the stem. Machine imaginative and prescient and synthetic intelligence are then used to determine a exact reduce level on the stem to to neatly separate the pinnacle of lettuce.

“The chopping strategy of an iceberg is essentially the most technically sophisticated step within the course of to automate, in keeping with teammates from G subsidiary Salad Harvesting Providers Ltd.”, explains IDS Product Gross sales Specialist Rob Webb. “The prototype harvesting robotic being constructed incorporates a GigE Imaginative and prescient digital camera from the uEye FA household. It’s thought of to be significantly sturdy and is subsequently ideally suited to demanding environments. “As that is an out of doors software, a housing with IP65/67 safety is required right here”, Rob Webb factors out.


The selection fell on the GV-5280FA-C-HQ mannequin with the compact 2/3″ world shutter CMOS sensor IMX264 from Sony. “The sensor was chosen primarily due to its versatility. We don’t want full decision for AI processing, so sensitivity will be elevated by binning. The bigger sensor format implies that wide-angle optics usually are not wanted both”, Rob Webb summarized the necessities. Within the software, the CMOS sensor convinces with glorious picture high quality, mild sensitivity and exceptionally excessive dynamic vary and delivers nearly noise-free, very high-contrast 5 MP photos in 5:4 format at 22 fps – even in purposes with fluctuating mild situations. The in depth vary of equipment, comparable to lens tubes and trailing cables, is simply as robust because the digital camera housing and the screwable connectors (8-pin M12 connector with X-coding and 8-pin Binder connector). One other benefit: camera-internal capabilities comparable to pixel pre-processing, LUT or gamma scale back the required pc energy to a minimal.

The prototype of the robotic mower might be used for area trials in England in the direction of the top of the 2021 season.

“We’re delighted to be concerned within the challenge and look ahead to seeing the outcomes. We’re satisfied of its potential to automate and enhance the effectivity of the lettuce harvest, not solely when it comes to compensating for the shortage of seasonal staff”, affirms Jan Hartmann, Managing Director of IDS Imaging Improvement Methods GmbH.

Prototype lettuce harvesting robot of Agri-Epicentre (UK)

The challenges going through the agricultural sector are certainly advanced. In accordance with a forecast by the United Nations Meals and Agriculture Group (FAO), agricultural productiveness should enhance by nearly 50 p.c by 2050 in comparison with 2012 as a result of dramatic enhance in inhabitants. Such a yield expectation means an infinite problem for the agricultural trade, which continues to be in its infancy when it comes to digitalization in comparison with different sectors and is already below excessive strain to innovate in view of climatic adjustments and labor shortages. The agriculture of the long run is predicated on networked units and automation. Cameras are an essential constructing block, and synthetic intelligence is a central know-how right here. Sensible purposes comparable to harvesting robots could make a major contribution to this.



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