Application Space Factory Automation

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Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANs) Submission Title
Application Space Factory Automation Date
Submitted 10 November, 2008 Source
Michael Bahr, Ludwig Winkel Company Siemens
AG Address Otto-Hahn-Ring 6, München,
Germany Voice 49-89-636-49926 , FAX
49-89-636-49926 , E-Mail bahr at siemens.
com Re Abstract Requirements and usages
in application space Factory Automation
Purpose amending 802.15.4-2006 for matching
the requirements for factory automation Notice T
his document has been prepared to assist the IEEE
P802.15. It is offered as a basis for discussion
and is not binding on the contributing
individual(s) or organization(s). The material in
this document is subject to change in form and
content after further study. The contributor(s)
reserve(s) the right to add, amend or withdraw
material contained herein. Release The
contributor acknowledges and accepts that this
contribution becomes the property of IEEE and may
be made publicly available by P802.15.
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Application Space Factory Automation

• Michael Bahr (Siemens AG)
• Ludwig Winkel (Siemens AG)

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Use Cases of Factory Automation

• automotive
• robots
• suspension tracks
• portable
• machine tools
• milling, turning
• robot revolver
• filling
• cargo
• airport logistics
• post
• packaging industry
• special engineering
• conveyor technique

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Requirements for Factory Automation (I)

• high reliability
• high determinism
• bounded delay / latency
• very low latency
• transmission of sensor data in ? 10 ms
• short duration between subsequent transmissions
• very small data
• data might be only 1 byte

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Requirements for Factory Automation (II)

• many sensors per gateway
• up to 250 sensors per gateway
• different traffic patterns
• limited traffic
• sensors send data only infrequently
• often event-triggered
• heavy traffic
• sensors send data (very) frequently
• often continuous data transmission

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Requirements for Factory Automation (III)

• star topology
• gateway
• sensor nodes
• temporary management devices
• minimal overhead in data frames
• short header
• flexible superframe structure
• roaming between gateways
• for instance, for conveyor techniques

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Network Topology

• star topology
• gateway
• devices
• sensorsunidirectional data exchange from
  devices to gateway
• actuators bidirectional data exchange between
  devices and gateway
• management devices (temporary)

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Assumptions

• assume controlled environment (factory floor)
• configuration for optimal performance
• network management and frequency planning for
  avoidance of co-existence issues