摘要:

A communications system for use in distributed computer control schemes is described. The requirements of such a system include data integrity, computer and data highway fault tolerance and the ability to insert or remove computers on-line. The performance of other communications systems in these respects is considered. The present scheme employs a broadcast serial double ring structure with equal access for all computers. Data are transmitted asynchronously in blocks with cyclic redundancy checking. Automatic reconfiguration takes place in the event of link failures, and the system recovers to the full double ring structure when links are repaired. The ring may be deliberately broken and computers inserted or removed on-line. The system has been developed and tested using S100-Bus microcomputers and the software has been written mainly in Fortran

ISSN:1744-683X    

DOI:10.1049/sm.1983.0045

出版商:IEE    

年代:1983

数据来源: IET

摘要:

The design of a low-cost microprocessor-based real-time image acquisition and processing system is presented. The design criteria of a real-time imaging module (RIM) and of the resulting processing system on a suitable host are separately discussed. This system accepts a standard video signal and converts it into 128 × 128 pixels at a rate of 50 frames per second. Simultaneous display of the digitised picture is provided. The RIM adopts a shared-memory approach to cope with the speed requirements, thus allowing the system to process both static and dynamic pictures in time-critical environments. It is inexpensive and easily adaptable to different hosts. A sufficient software library has been developed on a host, the EXORCISER, and two applications have been conducted on the system. To facilitate algorithm development, sampled pictures can be up-loaded to a more powerful system, the EXORMACS, which allows the evaluation of recognition algorithms

ISSN:1744-683X    

DOI:10.1049/sm.1983.0047

出版商:IEE    

年代:1983

数据来源: IET

摘要:

In recent years, great interest has developed in the possibilities for using computer vision systems in a variety of industrial applications. These range from complex inspection or monitoring tasks to supplying precise position and orientation information for part feeders or robotic manipulators. The paper describes the work being done at the GEC Hirst Research Centre to develop a modular vision system with its own structured interpretive language. Such a system will provide an excellent tool for building and programming industrial vision systems. The vision system has been incorporated into a robot workcell, and an experiment is described which demonstrates the use of several co-operating processors to perform a simple assembly task

ISSN:1744-683X    

DOI:10.1049/sm.1983.0048

出版商:IEE    

年代:1983

数据来源: IET