Application of Linked Personal Computers for Automatic Control in Large Sewage Works

1992 ◽  
Vol 26 (5-6) ◽  
pp. 1375-1380
Author(s):  
M. Bongards ◽  
J. Braun ◽  
H. A. Feyen

So far only very large sewage treatment plants (STP) are equipped with real process computers. High investment costs and complicated handling prevented their application in medium-sized and smaller STPs. Meanwhile Personal Computers became so efficient and reliable that they can be used for automatic control of industrial processes. In this paper the successful enlargement of the central STP of Stolberg-Steinfurt for 120,000 inhabitant equivalents is described. In the central facility seven linked personal computers co-operate in a local area network (LAN) for monitoring and optimization of different processes. They are connected with seven programmable controllers in outstations on site. The data transfer between the central control room and the outstations takes place using RS 232 C interfaces. Because of the use of common office computers in combination with industrially proved controllers the operators very soon accepted the system. After one year of operating experience they assess the system as a valuable tool.

2002 ◽  
Vol 26 (2) ◽  
pp. 154-158 ◽  
Author(s):  
E. D. Lemaire ◽  
J. A. Fawcett

Telehealth has the potential to be a valuable tool for technical and clinical support of computer controlled prosthetic devices. This pilot study examined the use of Internet-based, desktop video conferencing for remote configuration of the Otto Bock C-Leg. Laboratory tests involved connecting two computers running Microsoft NetMeeting over a local area network (IP protocol). Over 56Kbs−1, DSL/Cable, and 10Mbs−1 LAN speeds, a prosthetist remotely configured a user's C-Leg by using Application Sharing, Live Video, and Live Audio. A similar test between sites in Ottawa and Toronto, Canada was limited by the notebook computer's 28Kbs−1 modem. At the 28Kbs-1 Internet-connection speed, NetMeeting's application sharing feature was not able to update the remote Sliders window fast enough to display peak toe loads and peak knee angles. These results support the use of NetMeeting as an accessible and cost-effective tool for remote C-Leg configuration, provided that sufficient Internet data transfer speed is available.


Author(s):  
Osman Goni

A local area network (LAN) is a computer network within a small geographical area such as a home, school, computer laboratory, office building or group of buildings. A LAN is composed of interconnected workstations and personal computers which are each capable of accessing and sharing data and devices, such as printers, scanners and data storage devices, anywhere on the LAN. LANs are characterized by higher communication and data transfer rates and the lack of any need for leased communication lines. Communication between remote parties can be achieved through a process called Networking, involving the connection of computers, media and networking devices. When we talk about networks, we need to keep in mind three concepts, distributed processing, network criteria and network structure. The purpose of this Network is to design a Local Area Network (LAN) for a BAEC (Bangladesh Atomic Energy Commission) Head Quarter and implement security measures to protect network resources and system services. To do so, we will deal with the physical and logical design of a LAN. The goal of this Network is to examine of the Local Area Network set up for a BAEC HQ and build a secure LAN system.


As of late, remote interchanges get a great deal of consideration at manufacturing plant destinations. For the stable activity of generation frameworks utilizing remote correspondences, the most ideal path is for every framework is doled out a free remote channel. Be that as it may, a blended domain of various remote frameworks on a similar recurrence makes it hard to discover the reason for an occurrence. In this document, we center on uplink submissions at industrial facility locales, for example, detecting. We suggestsplittingsingle channel of 5GHz remote LAN addicted to limited stations. We demonstrate the outcome to build the digit of obliged terminals in a similar data transfer capacity of typical remote LAN, and improvement of recurrence use with model gadgets. To be exact, the absolute material of our projected technique is 1.7times otherwiseadditional as contrasted and the present strategy while the quantity of sensor hubs sending information all the while is more than 12.


1993 ◽  
Vol 29 (5) ◽  
pp. 1100
Author(s):  
Young Joon Lee ◽  
Kook Sang Han ◽  
Do Ig Geon ◽  
Chang Hyo Sol ◽  
Byung Soo Kim

Author(s):  
Pekka Salmenpera¨ ◽  
Juha Miettinen

The dynamic behavior of rotating machinery depends on the construction and foundation of the machine and in addition of the machine running parameters. By choosing appropriate parameters it is possible to influence considerably on the vibration of the machine. By driving the machine in that kind of an advantageous running window it is possible to minimize the vibration of the machine and to improve the quality of the product, but not to lose the efficiency of the productivity. Machines where the running window is important in maximizing the quality of the product are rotating cylindrical rolls in line contact for example in paper machines and grinding machines. In that kind of machines resonance situations are the most dangerous operation situations. The on-line measurement from rotating machine components requires wireless measurement data transfer applications. Sophisticated systems for that purpose need transfer capacity of several channels and two-way communications. Two-way communications allows the control of the measurement, versatile analysis of measurement signals and the control or supervised control of the running situation of the machine. If network solutions, for example via www are used, it is possible to use remote operation monitoring and control. In this paper a supervised operation monitoring and control system of a pilot roll station at Tampere University of Technology is described. The main components of the system are measurement unit on the end flange of the rotating roll, wireless local area network for measurement data transfer from the rotating roll to the control room computer and the local area network that connects the process control and signal analysis computers together. The system contains also a WWW-based remote control system for measurement signals from the rotating rolls and for the process variables. One possibility in this kind of complicated control situation is to use the fuzzy logics principle. Fuzzy logics are principally suitable for process control when knowledge-based systems fit well in diagnostics. However, fuzzy rule-based control can be defined as a knowledge-based system. For finding out the suitable running windows in the pilot roll station a fuzzy rule-based, supervised roll rotational speed control system is used. The paper describes also the fuzzy systems and comprises preliminary experimental results.


1988 ◽  
Vol 13 (4) ◽  
pp. 394-394
Author(s):  
Michio Yoshida ◽  
Toyohiko Morishima ◽  
Hiroyuki Matushima ◽  
Masakatu Fukushima ◽  
Hiroshi Abe ◽  
...  

2017 ◽  
Vol 9 (4) ◽  
pp. 406
Author(s):  
Rohmat Tulloh

Software defined network (SDN) adalah sebuah paradigma baru dalam dunia jaringan yang mampu memusatkan fungsi beberapa control plane pada layer 2 maupun di layer 3 secara terprogram, hal tersebut menyebabkan jaringan akan bersifat lebih fleksibel dan terskala. Dengan jumlah pertumbuhan pengguna internet yang semakin tinggi maka hal tersebut akan berbanding lurus terhadap kompleksitas dari jaringan internet itu sendiri. Sehingga paradigma SDN ini menjadi salah satu solusi yang muncul. Penerapan Virtual Local Area Network (VLAN) pada jaringan tradisional telah menjadi hal yang penting dan banyak diterapkan. Fungsi VLAN adalah untuk membatasi broadcast trafik dari suatu host, sehingga hanya dapat mengirim data kepada VLAN ID yang sama. Penelitian ini menganalisis performansi VLAN di jaringan SDN. Terjadi penurunan angka jumlah paket yang dapat terkirim (data transfer) dan nilai throughput pada sebuah VLAN ID karena terdapat pengaruh dari VLAN ID yang berbeda. Pada pengujian membandingkan VLAN dengan non VLAN over Netwok Functions Virtualization (NFV) didapatkan bahwa nilai data transfer dan throughput yang diperoleh pada VLAN lebih besar. Hasil analisis dari seluruh pengujian penambahan traffic terlihat bahwa kinerja VLAN pada SDN akan membebani kinerja jaringan pada VLAN yang berbeda


2021 ◽  
Vol 3 (55) ◽  
pp. 50-56
Author(s):  
S. Pritchin ◽  
◽  
V. Dragobetsky ◽  
І. Shevchenko ◽  
V. Palagin ◽  
...  

Purpose. Certification of silicon ingots intended for the manufacture of porous silicon substrates, which includes many operations for measuring silicon parameters. Some measurement operations are automated and some are not automated. The aim of the work is to fully automate the process of creating a quality certificate for monocrystalline silicon by developing an automatic control system for measuring controlled silicon parameters for porous linings. Methodology. We have performed an analysis of existing methods and methods of industrially controlled parameters of silicon. We have performed the analysis of standards for the measurement of parameters and the measurement process in the factory. Results. In this work, the authors performed the classification of industrially controlled parameters in accordance with the methods and measurement equipment. On the basis of the obtained analysis, the authors developed a scheme of the procedure for performing the operations of measuring the parameters of monocrystalline silicon. The authors proposed a block diagram of an automatic control system for measuring industrially controlled parameters of silicon. All equipment included in the sites is integrated into an industrial local area network, which is controlled by an industrial controller. The work shows the system software developed by the authors, developed in the LabView environment. The program allows you to generate a quality certificate for a monocrystalline silicon ingot for porous substrates, to analyze data for a selected period of time. Originality. For the first time, a classification of methods and means of measured parameters of monocrystalline silicon was carried out according to the criterion of measurement automation. The scheme of the order of performing of measurement operations has been improved in order to optimize it for automating the generation of a quality certificate. Practical value. The proposed automatic control system for measuring industrially controlled parameters of silicon is used at the plant “Pure Metals” that produces ingots of monocrystalline silicon. It can be used in factories where product quality certificates are used based on the measurement of many parameters. Figures 3, tables 1, references 11.


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