Caso de éxito
BP Pipelines, USA
- Recently the management at the Tulsa control center decided to add leak detection to their SCADA system to monitor pipeline leakage.
- To feed process data from Sybase database to the leak detection system, which had available an OPC server.
After a few hours of consulting with Cogent’s technical staff, he had a DataHub script that supports a connection to the Telvent system and queries the Sybase database. With his process data reaching the DataHub instance, it was just a matter of bridging the data to the leak detection system’s OPC server. Now the data flows from Telvent to the leak detection system reliably and consistently.
“Once we saw how easy it was for DataHub software to make the connection,” said Chuck, “we decided to use it to log the results.” With Cogent’s help he wrote another script to transfer the leak detection calculations back to an Oracle database for eventual re-use by the SCADA system.
The DataHub scripts give a large degree of flexibility for customization. On the Sybase side, there are actually two servers running, one hot, and the other for backup. The system can switch from hot to backup at any time. For every query, the script tests for which server is hot, and always reads from the correct server.
On the Oracle side, dynamic scripting allows members of Chuck’s team to modify the logging process even while the system is running. They can add, delete, or change data points that qualify the basic pipeline data, without breaking the connection or interfering with the logging.