Abstract:
The invention concerns a method, access control device (14; 30) and computer program product for providing user access to a piece of electronic equipment (30) in a computerized process control system (10) as well as to such a computerized process control system (10). In the system (10) an access control device (14; 30) receives, from a portable wireless communication device (34), a first identifier associated with this portable wireless communication device, compares the received first identifier with identifiers allowed for use in accessing the piece of equipment (30), and grants, in case the first identifier is found among the identifiers allowed for such use, the user of the portable wireless communication device (34) access to the piece of electronic equipment (30).
Abstract:
The present invention relates to a method in an oil and/or a gas production system comprising a plurality of oil and/or gas wells and means adapted for oil and/or gas production parameter testing. The method is adapted to compare a plurality of options related to the oil and/or gas throughput in the oil and/or gas production system, and includes the steps of: a) drawing a plurality of parameter samples from a parameter distribution; b) generating, for each parameter sample, a performance measure by using said parameter sample and a characterizer for each of said options, and c) generating an aggregated performance measure for each of said options by using said performance measures. The parameter distribution and the generation of the performance measure are preferably obtained by a Monte Carlo simulation by using historical and/or online measured and/or estimated data obtained from the oil and/or gas production system. The said data preferably includes at least oil flow rate, gas flow rate, water flow rate, liquid flow rate, gas-oil ratio, water-oil ratio, pressure, temperature, or fluid composition, or any combination thereof.
Abstract:
A portable robot control apparatus (1) to control a movement of a robot (10) or of a robot tool end (9) is provided. The portable robot control apparatus comprises an inertial device (6) with at least one acceleration sensor and/or at least one rotation sensor, where said inertial device (6) measures its relative movement and the apparatus (1) sends out to a robot controller (12) a signal (11) representing the relative movement, so that the robot controller (12) is enabled to control the robot (10) in such a way that said relative movement is repeated by the robot (10) or by the robot tool (9) end in real-time.
Abstract:
The invention is a method, controller and control system for controlling a robot that is used in concert with at least one other robot to perform an operation on one or more work objects. Each robot controller checks whether a common reference value is not acceptable, and if so, provides a signal for the robot to wait before proceeding to the next task. Each robot controller also checks whether the target object is in the correct position or not; and also checks whether or not another robot has stopped. If either another robot has stopped and/or if the work object is not in the right position, the robot waits. The invention is particularly advantageous for automated painting whereby a production line may be re-started more quickly again after a stoppage or production delay.
Abstract:
The invention deals with improved reliability in safety critical control of real world objects. Examples of real world objects subject to safety control are gas/smoke/fire detection systems, drilling equipment, pipes and pipelines, distillation columns, compressors, conveyor systems, boilers and turbines. A test application includes all relevant high-level language constructs and is repeatedly executed as assembler code in an industrial controller, which CPU is subject to fault detection during on-line safety control.
Abstract:
Sensor failure in an oil and gas production system is monitored and detected by checking the consistency of the measurements of the sensor in question using a computer-based process model with the measurements of the other sensors in the system. The present invention also generates a back-up value for a failing sensor with the process model by identifying the value that is most consistent with the measurements of the other sensors in the system.