Abstract
AUTOPIC is a multi disciplinary project aimed at mechanising the harvesting of soft fruit through the use of autonomous vehicles and robotics. Partners include Harper Adams University, the Shadow Robot Company, Interface Devices Limited and the National Physical Laboratory. The project is timely since the source of migrant seasonal fruit pickers is no longer supported by the Seasonal Agricultural Workers Scheme and in general migration is being discouraged by government policy. This has had the net effect of creating a crisis of there not being sufficient workers to pick the soft fruit we take for granted in our supermarkets and potential increased reliance on imports. Further, labour issues are not confined to the UK so that if the project is successful there will be a significant export market for the project output. There are likely to be many benefits from the use of the AUTOPIC autonomous vehicle and its robotics and we believe that the new technology will be transformative for a new UK industry.
Summary
The AUTOPIC project addresses potential future shortages of fruit pickers and their increasing cost in the UK and overseas by researching the essential elements of autonomous agile fruit picking vehicles. It will deploy advanced sensing and pattern recognition and robotic technologies that direct picking heads, adapted to many fruit or berry types, to inspect, pick and pack soft fruit in optimum condition and/or identify and remove pest infected, rotten, over ripe or mouldy fruit delivering crop hygiene. AUTOPIC will develop robotic inspection and manipulation systems for the care and harvesting of soft fruit; it will seek to produce systems with ultimate operational costs comparable to human pickers but with reduction in errors, improvement in consistency, allowing more predictable farm resource management. The project brings together state of the art knowledge of innovative robotic arms, specialised fruit picking heads and the systems integration of multiple visual and other sensors/cameras for positioning the vehicle as well as the necessary deep horticultural and agricultural machinery knowledge to maintain the harvest potential of soft fruit, plants, trees or bushes.
Impact Summary
The UK market for strawberries alone is worth around £300M per annum and fruit and vegetable retail sales value is around £10 Billion. Overseas markets are of the order of 10 times this amount for Europe and 25 times for the Americas. The market is characterised by multiple producers in a market dominated by supermarket buyers with growth limited by seasonal labour constraints. The wholesale price of fruit delivered to supermarkets is in the range of £2,500 to £3,000 per tonne and over the 9 month picking season, a seasonal picker picks around 2 tonnes of fruit per month at a labour cost of approx £1,380/month. (see Appendix A also) The intended project outcome will ultimately replace the current labour-intensive fruit production system with a technology-based solution, using high-tech UK manufacturing and providing new high-skilled employment both in manufacture and technical support services to farmers in the UK, European Economic Area (EEA) countries such as Spain and further afield with California being a specific target. Our goal for AUTOPIC is to meet or improve on human fruit picking performance with greater consistency and a capability of 24/7 working at lower operational cost while lessening the management overheads associated with seasonal labour. Equally, for hygiene of the crop, AUTOPIC should to be able to detect and eliminate every infected, mouldy or rotten fruit more efficiently than a skilled worker. The value of autonomous inspection and early treatment cannot be over stated as with s.w.drosphila (SWD) a crop can rapidly become uneconomic to harvest. The strategic route to market of the AUTOPIC system is to use this project to demonstrate that it can pick strawberries efficiently and at a rate at least comparable to a human picker of 10 strawberries per minute and that the vehicular platform can work up and down the rows without intervention almost continuously. If the project can show this and show that the system can be produced in quantor a price/performance that will reduce overall operational costs and improve quality, then the expected demand will create interest in manufacture, as the system could quickly take a major proportion of the market and release the market from its current labour constraints. It should also be stressed that the technologies developed by the project will be highly transferable to other areas in agriculture (and industry) with significant Intellectual Property resulting. Based on worker productivity figures, we estimate the replacement of 4 workers per AUTOPIC and thus a minimum UK market size of 1200 units for strawberry production alone, to be followed by export to other fruitpicking regions and the development of additional capabilities to pick other fruit. The target sale price of the AUTOPIC autonomous vehicle unit is £40k with an operating value of £50k per annum (ie. less than the labour replaced). This initial market represents a return on investment of more than a hundred times the project cost. By the end of the project, with all the elements of the system working together, the project will deliver a clear estimate of the cost of developing the concept to market, the cost of adapting the system to multiple fruit types although it may identify factors to be overcome by further development with estimated costs to resolve.
Project partners:
Harper Adams University
Shadow Robot Company
Interface Devices Limited
National Physical Laboratory