Remote supervisory control of the human-in-the-loop system by using Petri nets and Java

For Internet-based remote control systems, certain human operations may violate desired safety requirements and result in catastrophic failure. For such human-in-the-loop systems, this paper proposes a systematic approach to developing supervisory agents which guarantee that remote manual operations meet safety specifications. By applying the mutual exclusion concept, the Petri net approach is used to model, design, and verify a supervisory system which prevents human errors. Then, Java technology is adopted to implement the supervisor as an intelligent agent for online supervision of the remote control system. To demonstrate the feasibility and practicability of the developed supervisory approach, we apply it to a rapid thermal processor controlled over the Internet.     

掺铒光纤放大器远程在线监控技术的最新进展

综述了目前掺铒光纤放大器(EDFA)的监控方法，对其特点进行了讨论，并在此基础上提出了一种新型的监控方案，给出了该方案的结构图，并对所涉及的理论和实践问题做了比较详细的讨论。     

Dialogue channels used for remote supervision and remote control of underwater plant in submarine digital telephone links using optical fibers

In this paper, the need for supervisory on optical submarine systems is discussed. The requirements are presented in respect to the different means or channels which are available. A summary of supervisory systems which are currently used all over the world is given along with some additional comments.     

GSM—R场强数据的实时采集处理与远程监控研究

随着高速列车的不断提速以及网络应用的迅速普及,对GSM-R网络场强测试数据的实时采集处理速度和远程监控要求也逐步提高。在网络化的GSM—R场强监控系统中,利用DataSocket技术,设计了实时发布接收的网络拓扑结构和远程监控方案,并进行了编程实施;对场强数据的采集、发布、接收、处理与分析等环节进行了远程监控测试,实现了GSM—R场强数据的实时采集处理和远程监控功能,收到了较好的实际效果。     

智能遥控光纤电视监视系统的研制

采用MCS-51系列单片机为智能单元实现遥控光纤电视监视系统。通过软件编程实现多个观察点的摄像头焦距、光圈及云台等一系列动作的控制。经实际应用证明该系统性能稳定可靠,有一定推广价值。     

Expert-based maintenance: a study of its effectiveness

Monitoring of computer-based systems by a supervisory computer is common for high-availability systems. Expert-based supervisory systems are being proposed which are able to use dynamic information of the system to operate them with increased reliability. This paper brings out the functional capabilities of expert-based maintenance, and presents an analytic model to evaluate the effectiveness of the expert system in maintenance. The abilities of the expert system to maintain the host are parameterized and their effects on the performance of the system are studied. The results show possible improvement in the performance of a host due to expert-based maintenance     

全光传输系统的监控技术研究

介绍了一种全光传输系统的监控技术。监控信息由主信道之外的光波承载,在由传输光纤、端站和光放大器构成的环路中,以帧的方式进行传递,实现了整个系统工作状态的监视和控制。     

利用MODEM实现DSP与PC机的远程通信

本文从软、硬件两方面介绍了如何利用MODEM实现TI公司的数字信号处理器（DSP）MS320F240和PC机之间的远程通信，该系统已成功应用于某电源监控系统中。     

An Inexpensive Automatic Test System for Remote Supervision of Repeatered Lines

Salient features of a novel automatic fault location scheme for remote supervision of repeatered digital transmission lines is discussed. Looping back repeaters in succession by a single command on the power feed line eliminates the use of a separate supervisory cable pair. The scheme has been generalized in such a way as to facilitate its adoption to almost all type of repeaters, thus providing an inexpensive,simple supervisory scheme for a low density rural area line transmission hookups.     

基于labview的视频远程控制系统

本文采用虚拟仪器的原理,综合计算机的结构特点,提出了一种以计算机为平台,基于LabVIEW的视频远程监控系统,介绍利用TCP/IP协议进行数据远程监测和控制。利用LOCD技术和TCP/IP协议组以及LabVIEW中的网络传输模块,提出了一种更廉价的监控系统设计方案,具有通用性强,实用价值高以及性能稳定等特点。     

The SL supervisory system

Long-haul transmission systems often require a supervisory system to accomplish such repeater control and monitor functions as switching in standby components and measuring performance parameters. In an undersea system, it is impractical to provide a physically separate channel on which the repeater can send and receive supervisory signals. In SL, this problem is solved by embedding supervisory signals within the main data channels in such a way that they can be extracted or added within the repeater. Supervisory commands are sent to the repeaters on a subcarrier derived by periodically switching between odd and even parity computed over blocks of data. Supervisory responses are sent from the repeaters by low-index phase modulation of the data stream. This paper details the implementation of this scheme, as well as its benefits and limitations.     

The SL Supervisory System

Long-haul transmission systems often require a supervisory system to accomplish such repeater control and monitor functions as switching in standby comp onents and measuring performance parameters. In an undersea system, it is impractical to provide a physically separate channel on which the repeater can send and receive supervisory signals. In SL, this problem is solved by embedding supervisory signals within the main data channels in such a way that they can be extracted or added within the repeater. Supervisory commands are sent to the repeaters on a subcarrier derived by periodically switching between odd and even paritY computed over blocks of data. Supervisory responses are sent from the repeaters by low-index phase modulation of the data stream. This paper details the implementation of this scheme, as well as its benefits and limitations.     

Non-intrusive optical fibre identification using a high-efficiencymacrobending `clip-on' optical component

Results of a laboratory experiment are reported in which a nonintrusive optical fibre cable identification system has been implemented by incorporating cable identification data in the transmission systems supervisory channel. These data are accessed by a novel optical component which `clips-on' to the installed optical line plant and does not require access to the end of the fibre, while its insertion loss is within the limits defined by the systems optical power budget     

A Double-Deck Elevator Group Supervisory Control System Using Genetic Network Programming

Elevator group supervisory control systems (EGSCSs) are designed so that the movement of several elevators in a building is controlled efficiently. The efficient control of EGSCSs using conventional control methods is very difficult due to its complexity, so it is becoming popular to introduce artificial intelligence (AI) technologies into EGSCSs in recent years. As a new approach, a graph-based evolutionary method named genetic network programming (GNP) has been applied to the EGSCSs, and its effectiveness is clarified. The GNP can introduce various a priori knowledge of the EGSCSs in its node functions easily, and can execute an efficient rule-based group supervisory control that is optimized in an evolutionary way. Meanwhile, double-deck elevator systems (DDESs) where two cages are connected in a shaft have been developed for the rising demand of more efficient transport of passengers in high-rise buildings. The DDESs have specific features due to the connection of cages and the need for comfortable riding; so its group supervisory control becomes more complex and requires more efficient group control systems than the conventional single-deck elevator systems (SDESs). In this paper, a new group supervisory control system for DDESs using GNP is proposed, and its optimization and performance evaluation are done through simulations. First, optimization of the GNP for DDSEs is executed. Second, the performance of the proposed method is evaluated by comparison with conventional methods, and the obtained control rules in GNP are studied. Finally, the reduction of space requirements compared with SDESs is confirmed.     

新型副载波调制EDFA远程在线监控技术的原理论证

从理论和实验上论证了一种用于掺铒光纤放大器 (EDFA)远程在线监控和判断级连EDFA系统级间断点位置的技术方案。该方案利用频移键控 频分复用 (FSK FDM)技术进行声频副载波调制 ,通过光强度调制实现远程在线EDFA监控信息随主信号的传输。实验测得在副载波调制度为 3 %和 15 %时 ,10Gbit s波分复用 (WDM)光传输系统的功率代价分别为 0 16dB和 0 86dB。采用锁相技术 ,成功进行了 3 %调制度的监控信息解调。说明该方案可以实现对 5级EDFA系统的监控     

基于单片机的电能管理远程通信监控系统

利用标准调制解调器使单片机电耗用监控仪通过电话线路与主机通信,组成电能管理远程通信监控系统。它采用主机呼叫方式进行通信,可实现无人值守自动监测,数据传送可靠性高。介绍系统的基本组成原理、监控仪硬件接口和软件设计方法。     

GSM的数据远传技术的应用

在远程监控自动化系统中，采用常规有线及无线方式进行数据远传在很多方面有其局限性及不便性。为了高效经济的解决这些系统的数据远传的问题，而通过GSM移动通信业务实行数据远传。讨论了GSM的特点及其在远程监控自动化系统的数据远传中的应用。     

Human supervision and control in engineering and music: similarities, dissimilarities, and their implications

The human supervisory control model has been used successfully for decades and in numerous contexts to describe human interaction with complex technical systems. Recently, it has been argued that supervisory control modeling can also be applied in a musical context, to describe the interaction between a conductor and an orchestra. This paper reviews a range of applications of supervisory control modeling. Further, the authors attempt to identify similarities and dissimilarities between its use in technical and musical settings. The aim is to identify valuable knowledge and experience from the musical field. Such experience could be used to enrich the design of interaction between humans and complex technical systems. The key to successful knowledge transfer is the general applicability of human supervisory control modeling.     

基于ARM和CDMA网络的远程监控系统的设计

提出了以CDMA 1X网络作为监控数据传输媒介,以内部带有TCP/IP协议栈的MG815 CDMA无线模块作为通信设备,以飞利浦的ARM芯片LPC2210为微控制器的远程监控系统,并详细介绍了远程终端的硬件和软件设计方案。经多次现场测试表明,本系统通信数据稳定可靠,效果良好。     

Supervisory signal transmission experiments over 10000 km by modulated ASE of EDFAs

A supervisory signal transmission scheme using amplified spontaneous emission (ASE) for optical repeater systems is proposed. The 10000 km transmission of the supervisory signal was successfully demonstrated by using a recirculating fibre loop.<>