Quivering and hesitant, like a spoon-wielding toddler trying to eat soup without spilling it, the world’s first raspberry-picking robot is attempting to harvest one of the fruits. After sizing it up for an age, the robot plucks the fruit with its gripping arm and gingerly deposits it into a waiting punnet.
Each robot will eventually be able to pick more than 25,000 raspberries a day, outpacing human workers who manage about 15,000 in an eight-hour shift, according to Fieldwork Robotics, a spinout from the University of Plymouth.
The robot has been developed in partnership with Hall Hunter, one of Britain’s main berry growers which supplies Tesco, Marks & Spencer and Waitrose. Standing at 1.8 metres tall, the wheeled machine with its robotic arm has begun field trials in a greenhouse at a Hall Hunter farm near Chichester in West Sussex.
Guided by sensors and 3D cameras, its gripper zooms in on ripe fruit using machine learning, a form of artificial intelligence. When operating at full tilt, its developers say the robot’s gripper picks a raspberry in 10 seconds or less and drops it in a tray where the fruit gets sorted by maturity, before being moved into punnets, ready to be transported to supermarkets.
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