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Robots as helpers within the lettuce harvest

Robotic answer for automating the lettuce harvest

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

Robot solution for automating the lettuce harvest

The staff is engaged on a mission funded by Innovate UK and consists of consultants from the Grimme agricultural equipment manufacturing facility, 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 Recent and PDM Produce.

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

“The chopping means of an iceberg is probably the most technically difficult step within the course of to automate, in accordance with teammates from G subsidiary Salad Harvesting Companies Ltd.”, explains IDS Product Gross sales Specialist Rob Webb. “The prototype harvesting robotic being constructed incorporates a GigE Imaginative and prescient digicam from the uEye FA household. It’s thought of to be notably sturdy and is due to this fact ideally suited to demanding environments. “As that is an out of doors utility, 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 may be elevated by binning. The bigger sensor format implies that wide-angle optics aren’t wanted both”, Rob Webb summarized the necessities. Within the utility, the CMOS sensor convinces with glorious picture high quality, gentle sensitivity and exceptionally excessive dynamic vary and delivers virtually noise-free, very high-contrast 5 MP pictures in 5:4 format at 22 fps – even in purposes with fluctuating gentle situations. The intensive vary of equipment, comparable to lens tubes and trailing cables, is simply as powerful because the digicam housing and the screwable connectors (8-pin M12 connector with X-coding and 8-pin Binder connector). One other benefit: camera-internal features comparable to pixel pre-processing, LUT or gamma scale back the required laptop energy to a minimal.

The prototype of the robotic mower will likely be used for discipline trials in England in direction of the tip of the 2021 season.

“We’re delighted to be concerned within the mission and stay up for 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 employees”, affirms Jan Hartmann, Managing Director of IDS Imaging Growth Methods GmbH.

Prototype lettuce harvesting robot of Agri-Epicentre (UK)

The challenges going through the agricultural sector are certainly advanced. In line with a forecast by the United Nations Meals and Agriculture Group (FAO), agricultural productiveness must enhance by virtually 50 % by 2050 in comparison with 2012 because of the dramatic enhance in inhabitants. Such a yield expectation means an unlimited problem for the agricultural business, which remains to be in its infancy when it comes to digitalization in comparison with different sectors and is already below excessive stress to innovate in view of climatic modifications and labor shortages. The agriculture of the longer term relies on networked units and automation. Cameras are an essential constructing block, and synthetic intelligence is a central know-how right here. Good purposes comparable to harvesting robots could make a major contribution to this.



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