Field Bus Research Articles

Configuration of Actuator and Sensor Interface Bus Network using PLC

A kind of field bus called Actuator and Sensor interface bus(AS-i) was designed in this paper. The configuration of AS-i network system used Application Specific Integrated Circuit(ASIC) SAP5S chip and PLC S7-200 station, which included CPU 224 and AS-i master module CP 243-2. We also created an example program for PLC S7-200 to control AS-i network. The fire and smoke detection system was made with AS-i network system that was designed. This system had got more advantages than other system such as number of stations, easy installation, wide working area, etc. And designed system can be used as a partner network for higher level field bus networks.

Applied Technology in Control System Design of Asphalt Concrete Mixer's Based on PLC

In view of current production technology of asphalt concrete mixing plant and technology, a distributed computer control system based on PLC and field bus is developed. The compensation iteration self-learning algorithm is adopted, the compensation amount of learning algorithm of the system is designed and the course program control algorithm is presented. Therefore the precision of the system’s measurement and control is improved and the transmission error is reduced.

Research and Design of Embedded CNC System Based on CAN Bus Technology

This paper is based on the expansion of the CAN bus interface on ARM so that the embedded CNC system to achieve network, and display their respective advantages of field bus technology and embedded technology, so that to set up local area network embedded NC system model. The CNC system designed in this paper has characteristic as follows: high integration, flexible structure, good expansibility and the high performance-to-price ratio and so on.

Research and Development on the Fault Diagnosis System of Automatic Production Line Based on PROFIBUS

The YL-221 automatic production line is complex in structure, low in utilization and hard to maintain, which makes it unsuitable for teaching. So a fault diagnosis system based on PROFIBUS (Process Field Bus) on the basis of original device is developed. This paper firstly introduces the structure and working principle of the automatic production line, determines the common fault points of the slave station with the blanking station being the example and then employs the PLC and touch screen technology to design and develop fault setting and diagnostic devices of the slave station to meet the working requirements of setting faults in touch screen and monitoring the operation condition. Ultimately, a centralized control on the whole system and distributed control on field devices based on the PROFIBUS bus technology is realized. Real-time data monitoring is made through WINCC interface on the host computer.

Research on an Online Monitoring and Diagnosis System of High-Voltage Circuit Breaker

The principle of an online monitoring and diagnosis system suitable for various kinds of High-voltage Circuit Breakers (HVCB) is presented in the paper. The system consists of distributed data acquisition devices, a communication system based on field bus, and a host based on B/S structure. The research presents the methods to select the main monitoring signals of high-voltage circuit breakers, to acquire data, and to calculate operational feature values, as well as realizes high-speed process to monitoring signals, valid online monitor to high-voltage circuit breakers, and fault diagnosis.

The Solving of Bias Resistor and Its Effect on the RS485 Fieldbus

 Abstract—The RS485 fieldbus has been widely used in communication, data collecting and related fields. The stable communication is the premise of its application. Maximum load, terminal resistor and bias resistor are three main parameters of RS485 field bus, which directly influence the stable of system. This paper adopts the current flow method to solve the theoretical value of bias resistor based on the equivalent circuit model of RS485 field bus, and further analyzes the influence on the maximum load and terminal resistor. The research result offers a theoretical basis for the application of RS485 filed bus and is very useful in many applications. 

Intrinsically Safe for Continuous Automated Production Safety Technology of Unitary Detonating Powder

Production of unitary detonating powder is great danger, to protect the operation of the safety of workers, reducing labor intensity, no one is reaching a dangerous place to operate, this paper used IPC, PLC, field bus technology, industrial television monitoring, fault diagnosis techniques for successful implementation of unitary detonating powder continuous automated production safety. This paper discussed the key technological breakthrough situation such as continuous automated production safety technology of unitary detonating powder, security technology, precise control of many parameters of the batching technology, compounded many-parameter control technology, on-line automatic screening, weighing, cartoning technology, explosion-proof robot automatic transmission technology, the following explosion and explosion-proof technology, and intrinsically safe technology. This paper realized production process of unitary detonating powder automation total volume of feed, multi-parameter control compound, pressure washing, online drying, automatic cartoning screening measurement and liquid, automatic transmission solid logistics. This paper developed the production line applied to unitary detonating powder production as a basic intrinsically safe for continuous automated production safety technology, implemented human isolation, hazardous processes unmanned operation, minimized the accident rate, greatly and improved production consistency and product quality. Production lines have been long-term security, stability reliably applied to military production, improved the technological level of our industry, and have had enormous economic, social and military effectiveness Key words: continuous automated production safety, parameter control, intrinsically safe for negative pressure vacuum pumping technology, stirring up tilt compounded material technology; negative pressure online drying technology

Automatic Conformance Test Generation Based on a Verified Model of a Bus System Standard

In automation domain, the conformance of field bus devices in regard to the corresponding bus system standard is ensured by deploying conformance tests. The correctness of the tests is therefore decisive. A common practice to develop conformance test manually is fault-prone due to the fact that the test engineer can misinterpret the standard or the standard itself has defects. Therefore, in this present work we argue that a conformance test development should be based on formally verified requirements and propose an approach to automatically generate conformance tests based on the verified model of a bus system standard in order to assure the test correctness.

Consumer load measurement in automated buildings

Diminishing fossil fuel supplies accompanied by rising prices is increasingly leading to consumer awareness regarding their energy consumption. With the intent to prepare for diminishing primary energy sources, sustainable alternatives (e.g. energy gained through wind or solar power and trends towards smart grids) have been introduced and found wide application. With the application of intelligent solutions, the energy consumption in buildings can be reduced significantly. One basis for these solutions, such as load and energy management for optimized energy distribution and saving, is the energy metering of components in electric systems. This contribution shall present a field bus system that, due to its local distribution and system architecture, is suitable for energy consumption measurement of its individual components. After presenting the SmallCAN bus system and its concept, a summary of the mathematic algorithm and an example application will be shown to exemplify the functionality.

Integaration Design of Lon Works Bus and S7-300 System

How to integrate single equipment with LonWorks bus interface into s7-300 PLC control system is introduced. There are two different field buses, Profibus and LonWorks, in our process control system. It is difficult to directly converse the two protocols of thm. The paper put stress on describing the LonWorks /RS485 design and the realization of protocol conversion program design.

The Pressure Loss Alarm System of Circulating Water in Calcium Carbide Furnace

In order to improve the manual monitoring methods of the circulating water in calcium carbide furnace, this paper designs a pressure loss alarm system about circulating water of calcium carbide furnace. The system completes real-time automation and control of circulating water system by combining PLC technology, field bus communication technology and configuration technology, which uses PROFIBUS field bus to communicate between upper computer and lower computer. The practical application shows that this system can effectively achieve real-time monitoring of the circulating water, fault diagnosis and maintenance management.

Study on Monitoring of the Integrated Automation System with Web Technology

Diversified development of modern manufacturing enterprises need to simplify the application, inclusive of equipment and investment already, reduce the product cost, make the flow of information smooth and fast with business going global. These new demands and new technologies require enterprise information system to be integration, intelligent, multimedia, network and distributed developed. Traditional MIS is unable to meet all these. A collection of field bus integrated automation control network form the new information enterprise network frame with the Intranet as the management decision-making layer and the field bus as control layer, WEB technology throughout the network, the integrated automation system of an information integration with the characteristics of being intelligent, multimedia, network and distributed developed. This has important significance to improve the system of management decisions and global event handle and grasp ability. This paper firstly introduces the concept and composition of integrated automation system architecture, and in-depth analyzes the web technology and function, and proves the feasibility of application of web technology in integrated automation system for monitoring through the practice. The effect of monitoring system development technology is predicted in the end.

Research of Control Scheme of the New Automation System Based on Fieldbus

Adopting the control idea of configuration, based on the PROFIBUS field bus, and combined with the advantages of PLC and DCS, this paper puts forward a set of new design scheme of field bus control system. With the development of fieldbus technology and intelligent equipment, after simple modification, the system on-site can be realized all real distributed control system (FCS). The system is easy to expend, and has good portability and strong practical value.

The Design of High-Precision Temperature Measurement System Based on C8051F350 and PT100

This article describes the design of High-Precision Temperature Measurement System based on C8051F350 and PT100. The system consists of the control circuit, temperature sensors, signal amplification circuit, field bus interface circuit. The system adopts constant current source method and a differential measurement circuit. A 24-bit A/D built in the CPU is used to sample the data and Non-linear compensation by software algorithms for it. The design improves the accuracy of the temperature measurement system.

Fire Supervisory System Design Based on Embedded System

This paper introduces fire supervisory system design based on embedded system using by ARM9. Embedded technology and field bus technology are used for the system design. The system can realize detecting on-line. Showing uninterruptedly the information for fire monitory point of the building, the working current for electricity lines, the leakage current, as well as environmental temperature parameters e.g., through the LCD panel. Through this system The fire information of the building and the electrical wiring or the change, fault and abnormal condition for fire danger parameters of the equipment can be mastered at any time, and the hidden fire danger can be found in time, eliminating the hidden fire danger through the alarm and terminal linkage device.

Research of Carbon Monoxide Monitor System Based on Lonworks Industrial Control Network

The paper introduce NEURON3150 neuron chip with serial digital to analog - analog-to-digital converter TLC5615/TLC2543 interface method.Focused on the the Lonworks front-end intelligent monitoring and control network node software, hardware,and design and develop a system solutions for indoor hazardous gases CO data acquisition monitoring and alarm functions based on TMPN3150 neural network MCU. The paper brief introduce the Field Bus Lonworks to control network technology and reality of remote monitoring system on the basis of Integrated control network and information network,and analysis structural characteristics of distributed intelligent monitoring network system ,with certain promotional value.

Underground Coal Mine Ventilation Monitoring System Research

Underground coal mine monitoring system adopts single chip microcomputer and bus articulated structure, the communication mode is CAN field bus, with various intelligent sensors, it can automatically monitor various ventilation indicators of underground coal mine. The test results show that the system has realized real-time monitoring of distributed mass nodes ventilation parameters, through accurate monitoring, simple system structure and flexible operation, it fully meets the need of safe production of coal mine.

Controller Design for ISG Hybrid Electric Vehicle Based on SAE J1939 Protocol

During the design of IVECO ISG hybrid electric vehicles (HEVs), the ISG electrical propelling system was inserted into the Duling IVECO vehicle. Thus the controller of ISG electrical propelling system constructed the distributed control system with the other controller. However, field bus is one of key techniques in the distributed control system. Firstly, CAN communication protocol for ISG controller based on the SAE J1939 CAN bus protocol was presented, then the hardware and software of ISG controller was designed in modular.

Design of Ground Power Information System for EMU

In order to guarantee the operation safety, maintenance and servicing to the EMU often need to stop high voltage power supply, and switch to the ground power supply. This paper proposes a ground power information system of EMU, in this system, industrial field bus is composed of the single-phase power box, socket box and gateway, it is connected to the centralized control cabinet and the self-diagnostic terminal through the hub that constitute the information network, to realize the free transfer and exchange of data, and the centralized information management and control of the whole system, has a good promotion prospects.

Kinematical Analysis and Simulation of Stamping Processing Complete Set of Control Line System Based on ADAMS

The technical requirements for sheet metal processing equipment to the complete set of line development. Through the technical analysis of the stamping processing complete sets of control line system,provides based on SSCNET field bus, PLC ,touch screen and the whole line control scheme. And in the light of high-speed plate carrying manipulator and double open buttress unit the two important of control line units are analyzed design. Based on the kinematics simulation, and the interference has been checked by using the ADAMS/Postprocessor module of ADAMS. The simulation shows that the design result accords well with the real situation, which proves the validity and reliability of the motion simulation model. Intends to help of the manufacturing and site commissioning of the first line prototype.