By Jonathan Collins
June 21, 2006—Last week,
BP began a trial of an
RFID-based
sensor network. The energy provider hopes the pilot will help it better manage chemical inventory, increase stock visibility and reinforce safe-handling business rules at a petrochemical plant in the United Kingdom.
"This is next-generation RFID," says Mike Haley, a consultant in the chief technology office of BP's digital technology group, "and this is the first industrial trial of new RFID tags. Each node in the network will work collaboratively, potentially transforming business processes and creating a step change in safety and operational integrity."
During the six-week trial, BP is placing the new active RFID tags on 20 to 40 chemical containers stored at its petrochemical plant in Hull, England. The trial's goals are to learn how well the technology performs in a real-world setting, and to determine the best way to tag containers.
Developed by the
CoBIs project involving collaborative business items, the tags communicate and share data with each other. In the network, each RFID sensor node, or tag, can collect data and transmit it to any other node in the network. Launched in 2004 by
SAP and the
University of Karlsruhe in Germany, funded by the
European Commission, CoBIs is working to develop a way to embed business logic in RFID tags to link business process management more closely with what is happening in the physical world.
BP's partners on the project include
Lancaster University in the United Kingdom and the
University of Twente in the Netherlands. In addition,
Particle Computer, a spin-off company set up by the University of Karlsruhe's
Telecooperation Office (TecO) with ties to SAP's research department, will work to commercialize the project's results.
The CoBIs-developed RFID tags are designed to monitor the ambient conditions around them and provide alerts when required, according to predetermined business rules. Each tag carries an
accelerometer (movement) sensor, a wireless
transceiver, up to 10 kilobytes of
memory and other computing components for storing and processing business rules. The tags use a proprietary peer-to-peer
protocol to communicate with each other. Each node transmits not only its unique ID number but also details of its environment and content, both type and volume, to all other nodes within a 3-meter range.
These communications help determine if business rules—such as the total volume of stored chemicals allowed in this location—have been violated. In addition, they can help ensure that potentially reactive chemicals have not been stored close to each other, that storage conditions are acceptable and that shelf life has not been exceeded. If a business rule is breached, then an alarm can be raised, either on the
tag (with a warning light) or in the management application software. The network of nodes communicates with a wider corporate network via base stations.
According to BP, it is essential that the company have the ability to change the business rules on each sensor tag over a network, instead of having to visit each sensor node physically to update it. "[Knowing] where each container is located and when it is being moved will help safety and business practices in BP," Haley says.
READERS' COMMENTS
Process Capable RFID tag test with BP
Here's a question regarding the BP RFID field tests. Presumably the process-capable RFID tags and the data collection point(s) of the information systeim will be separated by more than the 3 meters range indicated in the article. How will the tags communicate with the SAP data processing system to allow for actionalbe intellegence from the containers? The BP field test article indicates that the tags will interface with each other at up to 3 meters. There may be value here but, the real value lies in the tag being able to communicate meaningful data to a central information system more than 3 meters distant from the tag. Is there a method anticipated in the test to accomplish data collection and processing into actionalble information?
Posted By: W. Naumann 6/26/2006 at 9:43:58 PM
3 meter range is not correct. Additions to the article.
> Here's a question regarding the BP RFID field tests. > > Presumably the process-capable RFID tags and the data > collection point(s) of the information systeim will be > separated by more than the 3 meters range indicated in the > article. How will the tags communicate with the SAP data > processing system to allow for actionalbe intellegence from > the containers? > > The BP field test article indicates that the tags will > interface with each other at up to 3 meters. There may be > value here but, the real value lies in the tag being able > to communicate meaningful data to a central information > system more than 3 meters distant from the tag. Is there a > method anticipated in the test to accomplish data collection > and processing into actionalble information? The technology used in this trial is more than classic (active) RFID. While RFID tags usually communicate with RFID readers only and do not exchange messages between each other, the sensor nodes used in a warehouse at BP can actually communicate in a peer-to-peer fashion. In order not to confuse possible business decision makers and future adopters, one should not simply call this technology RFID but sensor nodes. Peer-to-peer communication and local processing power make it possible for the nodes to supervise rules for safely handling autonomously and to detect any hazardous situation directly at the products rather than centrally in a back-end. While back-end connection is possible and useful for alerting and logging, the nodes can also raise local alerts (both visibly and acoustically). This is useful when back-end connection is not available e.g. during transport. It makes the surveillance operation more reactive and stable. The 3-meter range mentioned in the article is not correct. The hardware used in the trial has a radio range of up to 100 meters, however the field strength of the transceivers can be adjusted, resulting in a shorter range. Communication with the SAP System is achieved by providing web services for the functionality that the software on the nodes provides. Since the nodes are not powerful enough to offer web services themselves, we developed a middleware that offers proxy web services to the enterprise system and does all the conversions of message formats. Patrik Spieß, SAP Research, CEC Karlsruhe, Germany, member of the project
Posted By: P. Spie_ 6/27/2006 at 6:27:02 AM