Program Flow, User Interface

The following programs and associated data files are provided with the book. 5.4.1 Program Flow, User Interface 

Most programs are structured along the following sequence of steps  

Title Page display name, version, and features of program. 

Select the menu item (Open File), or (Start) if no data file is needed. 

Display the standard Open-File window load file. 

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Although most process simulation programs feature a graphical user interface (GUI) that creates a drawing that resembles a PED, printouts of these drawings are very seldom used as actual process flow diagrams. The unit operations shown in the process simulation usually do not exactly match the unit operations of the process. The simulation may include dummy items that do not physically exist and may omit some equipment that is needed in the plant but is not part of the simulation. 

Modem systems should provide a visual interface for rapid method development that can be mastered by a properly trained staff. A more dynamic integration of the robot into a work flow usually requires some form of scripting or high-level programming skills. The programmability and user interface of a robot is a critical factor to obtain user acceptance. The reader can find more details on the robotic platforms currently on the market in recently published review articles [71,72]. 

The 3D FEM two-phase flow program with friendly user interface is preliminary established. Finite element method makes the software to be able to flexibly dispose more complicated model geometry. Its functions and efficiency have also begun to be examined through practical application. This work offers a console to lift a series of our existing single flow software to the advanced version of multiphase flow. 

Start the Aspen program, select Aspen Plus User Interface, and when the Connect to Engine window appears, use the default Server Type Local PC. Select Pipe under the Pressure Changes tab from the Equipment Model Library and then click on the flow sheet window where you would like the piece of equipment to appear. In order to add material streams to the simulation, select the material stream from the Stream Library. When the material stream option is selected, a number of arrows will appear on each of the unit operations. Red arrows indicate a required stream and blue arrows indicate an optional stream. 

Figure 13.15 shows the operational scheme of this automatic tltrator. The heart of the unit Is an INTEL 8080 microprocessor mounted on the central processing unit (CPU) board. The rotary reaction cell assembly can accommodate up to three different sensors for multiple measurements on the same processed sample. Each stepper burette board controls up to two burette dispensing assemblies. Function boards such as the colorimeter board, air burette board, E/I output board and RS-232 printer Interface boards are available optionally. The optional D/A and E/I board is used for closed-loop applications where the tltrator controls the final element such as a control valve. The RS-232 printer Interface board Is useful for troubleshooting the equipment and editing user-defined programs. The Instrument accuracy, repeatability and response time vary widely and depend on the particular type of measurement concerned. The system requires a.c. power, a 75-psl air supply and a dilution water supply for proper operation. The air flow-rate required is of about 50 cm3/mln... 

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