Profibus and Modbus are two more common industrial field bus, they were widely used in industrial control field. At present, the control system needs real-time data sharing, but because fieldbus standards are not unif...
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ISBN:
(纸本)9783642254369;9783642254376
Profibus and Modbus are two more common industrial field bus, they were widely used in industrial control field. At present, the control system needs real-time data sharing, but because fieldbus standards are not unified, the equipment with different standard can not interconnection. This paper compares the OSI reference model, finding that communication model structure of Profibus and Modbus are streamlined by the OSI model, they are only three layers, which makes it possible to interconnect them. Aiming at the two buses can't interconnect with each other, we design a protocol conversion gateway for Profibus and Modbus to achieve protocol conversion of Profibus and Modbus. When designing the gateway, the MCU is AT89C52, protocol chips were selected Siemens SPC3, and describes the process of protocol conversion. Gateway is used in industrial field, enabling Profibus and CAN bus protocol conversion. The cost of gateway development is low, it can adapt to the complex environment of industrial field, which brings certain benefits to manufacturers.
Considering mobile cranes, a general solution of the 3D simulation software system is presented, and the kinematics math model of mobile cranes is built. Then the simulation system including crane oriented modeling, c...
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The proceedings contain 256 papers. The topics discussed include: lossless data compression based on network dictionaries;study on training system of engineering students education in the context of multipole values;r...
ISBN:
(纸本)9783642254369
The proceedings contain 256 papers. The topics discussed include: lossless data compression based on network dictionaries;study on training system of engineering students education in the context of multipole values;risk evaluation of enterprise informatization based on the unascertained method;preference survey and system design on mobile Q&A for junior high school students;the research of network information service platform based on affective computing;cultivating professional managers of the cooperative from students;a clustering scheme for trajectories in road networks;increasing computer assisted learning capacity for Chinese university students;research and development on scores print function in academic teaching affair management system based on ReportViewer;PSO solution for linear programming with fuzzy relation constraints;and a pricing model for human capital of enterprise based on Markov chain.
It is a key segment of the traffic management system about detecting traffic parameters. With the continuous development of computer vision, the video traffic detection method is paid more and more attention. For comp...
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It is a key segment of the traffic management system about detecting traffic parameters. With the continuous development of computer vision, the video traffic detection method is paid more and more attention. For comprehensive utilization of the technology of image processing, computer vision and pattern recognition, video detection technology has many advantages, compared with traditional geography induction coils, ultrasonic and laser detector etc, such as simple installation, convenient maintenance, not to harm the roadbed, low cost, high accuracy, wide monitoring area. It is constructed that an Epi-polar Plane Image(EPI) method reflect the surface and movement characteristics of the vehicle, then the EPI is processing of normalization, filtering and texture detection. Finally, based on the EPI, it is given about the detection methods of mean velocity and length of the vehicle, traffic flow. (C) 2011 Published by Elsevier Ltd.
Economic growth, industrialization and growing population in developing countries such as Malaysia are causing damaging effect to the environment along with radical climate changes. Businesses are under increasing pre...
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Mobile Cloud Computing (MCC) which combines mobile computing and cloud computing, has become one of the industry buzz words and a major discussion thread in the IT world since 2009. As MCC is still at the early stage ...
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This paper introduces a method for interactive direct manipulation of motion capture animation, which allows a user to alter positional properties of a motion and preserves the motions' quality. The algorithm cont...
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ISBN:
(纸本)9783037853191
This paper introduces a method for interactive direct manipulation of motion capture animation, which allows a user to alter positional properties of a motion and preserves the motions' quality. The algorithm contains three stages: motion analysis, motion path editing, and constraint reconstruction. Our experiments show that by using the algorithm human motion can be transformed successfully from the old path to the new path.
In the domain of computer supporting collaborative work (CSCW), various software packages have been developed for the product development. To solve the problem of the low efficiency of product development in heavy tru...
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ISBN:
(纸本)9783037853702
In the domain of computer supporting collaborative work (CSCW), various software packages have been developed for the product development. To solve the problem of the low efficiency of product development in heavy truck, the requirements of heavy truck development in collaborative design are analyzed, and then the system architecture and integration structure is proposed, on the basis, a collaborative design platform is developed and implemented in a heavy truck enterprise. The collaboration between design department and sales department, suppliers, after-service department based on the platform is implemented, which lays a solid basis for the improvement of product development speed and after-service level.
Based on the theories and principles of system dynamics,the energy-environment-economic system and the development status of each subsystem in Shandong province are analyzed to determine the key indicators and quantit...
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ISBN:
(纸本)9783860091258
Based on the theories and principles of system dynamics,the energy-environment-economic system and the development status of each subsystem in Shandong province are analyzed to determine the key indicators and quantitative relationships among the indicators relating to the model.A computer running system dynamics model on energy-environment-economic system was established by Vensim software,with data of 2000-2009 Shandong province statistics,reliability of the model is *** model simulated Shandong's 2010-2019 energy-environment-economic system situations,as well as simulation results were analyzed and some countermeasures and suggestions were put forward.
This paper investigates the generalized projective synchronization (GPS) of identicalWang 3-scroll chaotic systems (Wang, 2009) and non-identical Dadras 3-scroll chaotic system (Dadras and Momeni, 2009) and Wang 3-scr...
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