Research and Application of Computer Network Remote Control System

Remote control of the diagnostic systems is the basic requirement for the high performance plasma operation in a fusion device. This work presents the development of the remote control system for the multichannel Doppler backward scattering (DBS) reflectometers. It includes a remote controlled quasi-optical system and a remote intermediate frequency (IF) amplifier gain control system. The quasi-optical system contains a rotational polarizer, its polarization angle is tunable through a remote controlled motor, and it could combine the microwave beams with a wide frequency range into one focused beam. The remote IF gain control system utilizes the digital microcontroller (MCU) technique to regulate the signal amplitude for each signal channel. The gain parameters of amplifiers are adjustable, and the feedback of working status in the IF system will be sent to MCU in real time for safe operation. The gain parameters could be controlled either by the Ethernet remote way or directly through the local control interface on the system. Preliminary experimental results show the effectiveness of the remote controlled multichannel DBS system.

Increasing operating costs and decreasing net revenues have greatly underlined the importance of optimizing production operations. The development of automation systems in the Petroleum Industry has become important in uniting isolated production facilities to form integrated systems. This paper briefly traces the history and development of remote and computer control systems for gas and oil production. It also describes the development of the remote control and monitoring system installation at Union Oil onshore and offshore production facilities in East Kalimantan. Emphasis is placed more on the description of the remote process system monitoring and control in the Attaka field. The wireless communication and process control system are being used to transmit alarm and flow metering, emergency shutdown, and paging functions between five satellite wellhead platforms and production platform central monitoring system at the Attaka field. Each producing facility is designed to be compatible with remote supervisory control. To obtain this compatibility and a high degree of safety, conditions in each portion of the process system are monitored. Paralleling the development of automatic control techniques were computer applications. A simple computer system are being used to control and monitor three gas dehydration towers which comprise a portion of the Union LEX Plant operation at Santan onshore facility. Expectations and development of future systems and evaluation of past experience are discussed in the conclusion.

In order to do research on the remote control technology of the Man-in-the-loop Missile, it is very important to make research on Remote Control Simulation System(RCSS). The hardware structure and software structure were brought up; the multithreading technology was applied to construct the communication; the problems of brief missile movement simulation and infrared image generation were solved. The realization of RCSS has some practice meanings in the sudy of remote control technology.

Elektrodistribucija Srbije d.o.o. Belgrade, within its system covering the entire consumption area of the Republic of Serbia, operates multiple remote monitoring and control systems for medium-voltage distribution networks based on digital packet radio devices PRD (Packet Data Radio), using the DNP3 protocol. The Remote Monitoring and Control System for the medium-voltage distribution network relies on narrowband digital radio communications in the UHF range, enabling integration of various switchgear and intelligent electronic devices. The Remote Monitoring and Control System based on digital packet radio devices PDR transmit measurements, statuses, and alarms event-driven with a time stamp associated with the Remote Terminal Unit (RTU), synchronized with the SCADA server via the DNP3 protocol. Each radio device supports store and forward functionality, allowing message retransmission from other radio devices. In addition to data transmission for remote monitoring and management of the medium voltage distribution network, radio devices feature diagnostic capabilities for monitoring their parameters and communication links. The software application RND (Radio Network Diagnostic) operates on the Linux OS on a standard server hardware platform, utilizing an appropriate database for data archiving, designed for efficient handling of Time Series data. The user interface for data visualization and report generation is web-based, enabling access for authorized personnel without the need for dedicated software installation.

Computer Assisted Remote Control and Automation Systems for Longwall Shearers

This paper illustrates an internet-based fuzzy control system of complex industrial manufacturing, which is cement production. It ensures remote and fuzzy control of the process in real time in cement factories in Algeria. The remote control system contains several tasks, such as alarms diagnostic, e-maintenance and synchronising regulation loops, to guarantee the automated performance. To evolve the system, we propose firstly, fuzzy logic to control the cement mill workshop and ensure that the system is operational with minimal downtime. Secondly, we integrate internet technology to remote control via internet to secure human life and render it unnecessary for operators to be at site. When there is a breakdown, it is not necessary to send an expert to diagnose and solve problems. Therefore, the system reduces travel costs by sending reports and transmitting process data. Operators can execute and monitor the system according to authentication access in main control room or via internet.

Mechanical arm, image recognition and wireless transmission have been a hot topic and technology in recent years. This paper mainly introduces the object recognition mechanical arm based on the mechanical arm and wireless transmission technology. The system is modular, and the whole equipment system is divided into remote control system and mechanical arm system according to function. The remote control system is an upper computer software which integrates image recognition, related data processing module and wireless transmission module. The remote end includes wireless transmission module, steering gear control module and image acquisition module. The image is collected and sent to the remote control system, and the motion trajectory of the mechanical arm is obtained after calculation, and the control signal of the stepping motor on the mechanical arm is further calculated, and finally sent to the mechanical arm system to achieve the purpose of remote control. At the same time, during the movement of the mechanical arm, the relevant data is collected by the sensor on the mechanical arm and sent back to the remote control terminal for display and judgment. In this project, the mechanical arm system can automatically recognize the target on a two-dimensional plane and move the mechanical arm according to the object position. Meanwhile, the upper computer can display relevant data information.

Human-like conception of a remote control robotic system

Enterprise integrated automation is the general trend of industrial control development. The combination of control network and information network provides comprehensive information services for enterprise as production information, production control, planning decisions and sales management as well. The industrial control network and information network integration can realize the information and resources sharing among the enterprises networks and further improve the enterprises informationization and integrated automation level so as to achieve the situation that the enterprise production and management is more efficient and more flexible. The study introduces the information integration of the fieldbus control network and the information network and analyze the information integration technologies such as internetworking, dynamic data exchange (DDE), Open Database Connectivity (ODBC), OLE for Process Control (OPC), control network and information network with unified protocol standards. the integration application of bus system is illustrated with the example of Controller Area Network (CAN) bus.

With the development of society, people have higher and higher requirements for the convenience of life. Therefore, it is of great practical significance to study the remote control system of household appliances based on single chip microcomputer. This paper first introduces the common scheme of remote control technology of home appliances, then analyses the module of remote control system of home appliances based on single chip microcomputer, and finally gives the design scheme of remote control system of home appliances based on single chip microcomputer.

This paper integrates the IEEE 802.11 g ad-hoc wireless network and the control area network (CAN) in the present network control systems (NCS) or wireless - NCS (WNCS). Both the TCP and the CAN protocols are adopted as the communication gateway in a remote control system. The time delay between the application layer of the client and the application layer of the remote control target has been measured and analyzed in this paper. Experimental results on an AC 400 W servo motor indicate that the communication jam mainly causes the instability due to the induced time delay. In this paper, by applying the adaptive Smith predictor with the switching sampling time, satisfactory control performance of WNCS can be obtained even though the time delay seriously increases. Moreover, the feasibility of the proposed WNCS has been proven through experimental results.

The loadbreak cutout control is most often performed from the zonal load dispatcher level. The system presented in this paper performs the remote control and permanent monitoring of some loadbreak cutouts which run on a 20kV power line. The monitoring and control is directly carried out by the zonal load dispatcher. This remote control alternative provides more operativity and safety in decision making for the load dispatcher. The hardware components of this control system are installed in the dispetcher's control center and in the electric switch boxes of the loadbreak cutouts, respectively. The physical communication support for sending information between the dispatcher and the cutouts is the optical fiber and the Global System for Mobile Communications (GSM) network. On the control center server a customized software application is installed, ensuring the user (dispatcher) interface while monitoring the cutout's status and performing commands, choosing the communication support (GSM or optical fiber) etc. The monitoring and remote control system enables all features for Supervisory Control and Data Acquisition (SCADA) integration. The application is hardware and software configurable, giving the posibility of monitoring more loadbreak cutouts. The system is currently operational in Romanian hydropower plants.

In this paper, the stabilization of one class of remote contorl systems with unknown time varying delays is analyzed and discussed using LMI techniques. A discrete time state space model under a static control law for remote control systems is first introduced based on some assumptions on the uncertain term. The time delay is unknown time varying, and can be decomposed into two parts: one fixed part which is unknown and is an integer multiple of the sampling time; the other part which is randomly varying but bounded by one sampling time. Static controller designs based on delay dependent stability conditions are presented. This system is then extended to a more general case when the randomly varying part of the time delay is not limited to one sampling time. The derivative of the time delay is not limited to be bounded. Hence, the contributions are as follows: i) for a given controller, we can use these stability criteria to test stability of the resulted system; ii) we can design a remote controller to stabilize an unstable system. Finally, a simulation example is presented to demonstrate the remote stabilization of open loop unstable systems.

Power line communication (PLC) plays an important role in such no-new-wiring applications as digital HPS ballast remote management in new public lighting system. PLC data link especially with a large scale of ballast nodes is liable to be destroyed because of the dynamic channel properties. The reasons that lead to the failure of data link, the corresponding methods to enhance the reliability of PLC network are investigated, and the hybrid dynamic topology of the PLC network is studied, which is based on self-organizing algorithm in MAC layer with improved fault-tolerance ability. According to the study results, a low cost TDMA-like MAC protocol suitable for the hybrid PLC network initialized by self-organization algorithm is proposed and the performance is analyzed by M/D/1 model compared with polling. The general round robin cycle duration of PLC networks with hybrid structure that interested to remote monitor and control system is also presented.

Physical testing of large-scale ship models at sea is a new experimental method. It is a cheap and reliable way to research the environment adaptability of a ship in complex and extreme wave conditions. It is necessary to have a stable experimental system for the test. Since the experimental area is large, a remote control system and a telemetry system are essential, and were designed by the authors. An experiment was conducted on the Songhuajiang River to test the systems. The relationship between the model’s speed and its electromotor’s revolutions was also measured during the model test. The results showed that the two systems make it possible to carry out large-scale model tests at sea.