Advantages: the program processing and interface operation are the same as the actual production, the required software and hardware are simple, and the one-time investment cost is low.
Disadvantages: each loop does not have the same data source as the actual working condition, and at most, a false input signal can be derived from the output value as the input value.
System composition: the manufacturers are slightly different. Usually, the software only needs one simulation package. In hardware, some manufacturers only need one PC to simulate multiple controllers and operating stations, while others need multiple PCs to simulate multiple controllers and operating stations.
Summary: It is only used for operators to be familiar with the operation method of DCS system, and the investment cost is low.
The other is process simulation, which is usually called Operator Training System (OTS). The biggest difference from the first simulation is that it introduces a factory production model that is exactly the same as the actual working conditions.
Advantages: According to the input of the factory production model with the same actual working conditions, the operator can carry out corresponding operations, and OTS can change the internal pressure data or temperature data according to the same operating characteristics as the actual operation of the factory, thus simulating the actual operation environment of the factory production equipment.
Disadvantages: the investment cost is high, and the investment of an OTS system is usually several million or even higher.
The simulation effect depends on the model software. In order to make the simulation effect as realistic as possible, a debugging period is needed.
The system composition is complex.
System composition: The manufacturers are slightly different. Simply put, we need a process device model software package (possibly provided by non-DCS manufacturers), OPC interface software, simulation software package of DCS manufacturers, engineer software package, operation station software package, etc. The hardware is basically composed of five PCs, including process equipment station, OPC station, simulation engineer station, simulation operation station and simulation field control station.
Summary: The investment cost and technical risk are high, but the daily working conditions and emergency and dangerous working conditions of factory production can be repeatedly trained.
Both simulation configurations are the same as those in the actual engineering station, but usually the real engineering configuration can be directly imported without a separate simulation configuration.
Pure hands! ! !