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TU Berlin

Inhalt des Dokuments

Technological innovations for automated maintenance and harvesting

Objectives:

  • Analysis of the requirements specification for general maintenance and harvest for biomass and food production based on stakeholders requirements, low tech and high tech solutions,
  • A set of required tools for the cultivation of plants in the vertical exposition has been adapted or newly developed, the according design of the primary machinery is developed,
  • Construction of maintenance and harvest-machinery prototypes, implementation in experimental stands, first testing.

Examples of the work in the WP:

Analysis of the requirements for harvest and maintenance technology of the stakeholder could be determined based on the Workshop on the 26.9.2018. The Stakeholders underlined again the urgent need for inexpensive maintenance. Apart from this, the need for differentiation between private and professional use was expressed. On one hand parts of the community have a high interest in interacting with Urban Green, on the other hand the need for fully autonomous systems was expressed. With the low-tech and the multifunctional high-tech systems our research reflects these different interests very suitable.

The low-tech system has been developed, build and finally installed at the test stand in Berlin.

TUB+NTU: Ongoing detailed discussion with partners about the requirements for automatized maintenance identified the need for two further tasks: first a linear cutter for climbers and second a vertical mower.

In 2019 concepts for these additional tasks were developed. In Spring 2020 a group of students started to build a prototype for the first task and another student is realizing the second task during his bachelor thesis.   

Although the requested multifunctional robot is the focus of work in WP5. Research and development are continually running.

A job split for the high-tech system has been defined. The TU Berlin will develop the mechanics and a simple control that enables the robot to go to definite positions and turn on and off tools.  The NTU will generate data where to cut, harvest or operate with further tools.

The first idea of having a portal system positioning the tool in front of the greenery has been rejected. Especially for larger greenery the system needs to be very massive and is getting expensive and CO2 consuming. Robotic systems moving along the wall by coupling to different connections are not expected to be reliable. Plants could grow over the connection points and thus prevent save and stiff coupling.

There is promising potential in cable robot concepts. Robotic structures are hanging on cables in front of the greenery. The Robot can be positioned by varying the cable length. This system is building lightweight and can be ported by the maintenance company to different greenings. This enables relative low maintenance costs and allows more positive CO2 balance.

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