Dynamic safety system for collaboration of operators and industrial robots

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

There is an increasing need to have a safety system, which allows safe collaboration of operators and industrial robots. Industrial robots are powerful and therefore dangerous impacts and crashes need to be prevented by keeping safe distance between moving robot and the operator. Safe distance can be achieved by monitoring the position and speed of the robot and the position of the operator. Separation distance, speeds and performance of the control system, sensors and actuators are regulated by standards, which must be followed. VTT has developed a dynamic safety system, which monitors the speed and separation between persons and the robot in order to keep the stopping distance of the robot small enough to avoid impacts. The dynamic safety system enables safe continuous working beside the robot and automated restarting after a safety-rated monitored stop. An assistance system is applied to switch safety modes of the robot according to separation distance. Configuring and validating the safety system are safety-critical and time-consuming phases of design. Therefore, a configuration tool is required to get a coherent configuration, which support validation process.
Original languageEnglish
Pages (from-to)61-71
Number of pages11
JournalOpen Engineering
Volume9
Issue number1
DOIs
Publication statusPublished - 7 Mar 2019
MoE publication typeNot Eligible

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Industrial robots
Security systems
Robots
Actuators
Switches
Control systems
Monitoring
Sensors

Keywords

  • safeguarding
  • speed and separation monitoring
  • protective device
  • requirements
  • Safeguarding

Cite this

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title = "Dynamic safety system for collaboration of operators and industrial robots",
abstract = "There is an increasing need to have a safety system, which allows safe collaboration of operators and industrial robots. Industrial robots are powerful and therefore dangerous impacts and crashes need to be prevented by keeping safe distance between moving robot and the operator. Safe distance can be achieved by monitoring the position and speed of the robot and the position of the operator. Separation distance, speeds and performance of the control system, sensors and actuators are regulated by standards, which must be followed. VTT has developed a dynamic safety system, which monitors the speed and separation between persons and the robot in order to keep the stopping distance of the robot small enough to avoid impacts. The dynamic safety system enables safe continuous working beside the robot and automated restarting after a safety-rated monitored stop. An assistance system is applied to switch safety modes of the robot according to separation distance. Configuring and validating the safety system are safety-critical and time-consuming phases of design. Therefore, a configuration tool is required to get a coherent configuration, which support validation process.",
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Dynamic safety system for collaboration of operators and industrial robots. / Malm, Timo (Corresponding Author); Salmi, Timo; Marstio, Ilari; Montonen, Jari.

In: Open Engineering, Vol. 9, No. 1, 07.03.2019, p. 61-71.

Research output: Contribution to journalArticleScientificpeer-review

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