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Robots as helpers within the lettuce harvest

Robotic answer for automating the lettuce harvest

Lettuce is a useful crop in Europe and the USA. However labor shortages make it tough to reap this useful area vegetable, as sourcing adequate seasonal labor to fulfill harvesting commitments is without doubt one of the sector’s largest challenges. Furthermore, with wage inflation rising sooner than producer costs, margins are very tight. In England, agricultural expertise and equipment consultants are working with IDS Imaging Growth Techniques 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 undertaking funded by Innovate UK and contains consultants 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 undertaking, current 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, based on 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-about to be significantly sturdy and is subsequently ideally suited to demanding environments. “As that is an outside 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 signifies that wide-angle optics usually are not wanted both”, Rob Webb summarized the necessities. Within the utility, the CMOS sensor convinces with wonderful picture high quality, gentle sensitivity and exceptionally excessive dynamic vary and delivers nearly noise-free, very high-contrast 5 MP photographs in 5:4 format at 22 fps – even in functions with fluctuating gentle situations. The intensive vary of equipment, similar to lens tubes and trailing cables, is simply as robust 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 similar to pixel pre-processing, LUT or gamma scale back the required pc energy to a minimal.

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

“We’re delighted to be concerned within the undertaking and look ahead to seeing the outcomes. We’re satisfied of its potential to automate and improve 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 Techniques GmbH.

Prototype lettuce harvesting robot of Agri-Epicentre (UK)

The challenges going through the agricultural sector are certainly advanced. In response to a forecast by the United Nations Meals and Agriculture Group (FAO), agricultural productiveness should improve by nearly 50 p.c by 2050 in comparison with 2012 because of the dramatic improve in inhabitants. Such a yield expectation means an unlimited problem for the agricultural business, which continues to be in its infancy when it comes to digitalization in comparison with different sectors and is already underneath excessive strain to innovate in view of climatic adjustments and labor shortages. The agriculture of the longer term is predicated on networked gadgets and automation. Cameras are an vital constructing block, and synthetic intelligence is a central expertise right here. Good functions similar to harvesting robots could make a major contribution to this.



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