The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The use of supervising of position control in modern industrial automation and building automation systems is becoming more and more common. In addition to basic features and reliability of these systems, increasingly important in their functionalities are opportunities for inter-communication and exchange the process data with other subsystems, visualization of their work or archiving of this data...
This paper demonstrates an example of the solenoid valve driver cored on AVR micro controller. With a discussion over the system's hardware architecture, we further explain the communication protocol between the module and system controller, as well as the corresponding software control process. Besides, we illustrate the reliability and flexibility of our design in both the software and hardware...
A high-resolution water display system(WDS) has been developed, which provides a new viewing modality for text/graphic information, unlike traditional display screens which use the brightness/color of built-in array of pixels on a flat panel to display information contents. The WDS has no fixed display screen which usese an array of water nozzles to precisely control the timing of water drops so that...
Automated People Movers (APM) are systems for passenger transport with fully automated operation and high frequency service. Trains controllers are traditionally centralized and based on wired circuits, although they generally have serious difficulties in the installation and maintenance. As there is increased demand on the system, there are advantages in choosing an open architecture, with a simple...
We analyze here the topic of integration, in the area of process automation, from sensor/actuator levels to plant management levels. The communication at fieldbus level is based on wireless technology while management applications run in wired control systems, but can also be distributed, communicating via the Internet. This work aims at building a real-life demonstrator at Boliden, a mining and smelting...
We present in this paper some technical progresses in developing a novel information display mechanism called digitized water display (DWD). In sharp contrast to traditional display screens which use the brightness/color of built-in array of pixels on a flat panel to display information contents, the digitized water display we developed has no fixed display screen. Instead, we use an array of water...
Spring sorting system is the most important equipment of quality inspection in valve spring automatic production line. Based on embedded technology, a new spring sorting system composed of multiple controllers has been designed. In the system, each controller managed its related services, worked in parallel and coordinated through CAN-bus communication to ensure the system speed. The system defined...
In this paper, the key technologies of electro-hydraulic control system to the requirements of field-bus interface, CAN-Bus application layer protocol as well as electro-hydraulic equipment protocol are introduced. The CAN-Bus hardware interface circuits, software system function and working models of a high-performance electro-hydraulic proportional valve are given. It provides the technical support...
Third-generation DCS (Distributed Control System) employ powerful object-oriented design technology to enable efficiency improvements within daily operations and maintenance activities. DCS is operated either in single mode and or it is interfaced with other systems such as PLC, SCADA, and Etc. via network for enhanced functionality. Developing Distributed Control System is a major industrial concern...
The RS-485 serial port communication is very popular in a monitoring and controlling system. A concept of RS-485 free port pseudo-full-duplex communication is presented in this paper, that is, RS-485 can not only send timed messages continuously but also receive messages at any moment from the host computer. Since RS-485 serial port has the advantage of far distance communication and anti-jamming,...
The CANoe is adopted to finish the VRV-CAN network simulation system design so as to solve the problem of too many communication nodes, complex communication content within the system. The simulation procedure and means in CANoe are described with emphasis on the discussion of network architecture, communication protocol and network load ratio. The simulation results are presented. Through the system...
This paper designs an assembly valve controller based on DeviceNet fieldbus. This controller communicates with the PLC fieldbus communication module, transmits the control signal of assembly valve with twisted pair lines, which economize the cables and implements intercommunication between assembly valve and upper managing layer.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.