Applied Mechanics and Materials Vols. 511-512

Abstract: This paper studies the design of a new intelligent PLC (Programmable Logic Controller) for Ethernet communication based on the switched network. It proposes a new solution for the Ethernet-based automation equipments and the related applications, which is used to control a variety of industrial processes in distributed locations. The points we discuss mainly involve Ethernet I/O architecture and the hardware design of communication module. For the field part, the scope of our control objects includes the remote I/Os and the interfaces with other equipments of this level, typically distributed I/Os & devices. For the devices of the architecture, we focus on discussing the hardware design of the communication module in our architecture. The design includes the system architecture with a new dual processer, reset signals and power supply supervisor, data strobe and clock, which have acted the kernel part in information exchange of intelligent PLC based on industrial Ethernet. It is a new solution for the Ethernet-based automation applications and implementations.

Abstract: It is very significant for hydrological telemetry system to gather such real-time information as rainfall and water level of reservoir in order to improve forecasting level of flood prevention and flood disaster. In this paper, a novel hydrological telemetry system is presented. The system mainly consists of remote terminal units (RTUs) and monitoring center. The RTU is mainly designed to collect rainfall and water level, and send this information to the host computer in the monitoring center by GPRS network or other wireless network. The RTU is completely implemented on a low power consumption hardware platform. The host computer receives the data from the RTUs and analyzes them, then gives detailed tables, diagrams and some decision-making conclusions, which helps the competent authorities of the reservoir or the dam to realize remote monitoring and alarming system. The design principles, difficulties and skills are discussed detailedly in the paper. The low power consumption of the RTU and bit error rate for GPRS communication are both tested. A prototype is developed to validate above design cruces.

Abstract: Class D audio amplifier can extend battery life for its small cubage and high efficiency. In connection with the advantages of Class D audio amplifier, a class D audio amplifier with high efficiency and low distortion is designed in this paper. A negative feedback is established to improve the linearity of the amplifier and power supply ripple rejection ratio. Minimizing the distortion of the system requires high-speed sampling. High-speed comparator is designed to meet this requirement. Moreover, the work requires that the chip has a band-gap reference with low temperature coefficient and high power supply rejection ratio.

Abstract: Vibrating wire sensor signal acquisition system is widely used in the fields of water conservancy dam, slope, construction, mining and so on to measure osmotic pressure, soil pressure, strain and other physical quantities. This paper studies the single coil vibrating wire sensor signal acquisition system,which uses the STM32F103 core processor generating a low-voltage feedback PWM signal to excite vibrating wire with scanning frequency, after signal amplification, filtering and signal normalization through the frequency measurement module, and ultimately achieve frequency measurement. The system can improve the traditional vibrating wire acquisition instrument, so as to achieve fast and efficient and reliable long-lasting measurement. According to some simulation and designed circuit, the measured data and diagram can verify the feasibility of the method.

Abstract: When wastewater is treated with an electronic water treatment method, hardness, alkalinity and conductivity of the wastewater decrease much slower with time on. If the operating voltage of wastewater treatment is reduced at this time, the purpose of energy saving can be realized while wastewater treatment efficiency is guaranteed. Existing electronic water treatment facilities always realize water treatment with constant low voltages and almost all of them have no optimal design about energy saving, water treatment system rust reduction, water treatment automation, etc. To solve these problems, a new energy-saving electronic water treatment facility is designed in this paper. Based on a low-power SCM MPS430F169 and circuits such as the water treatment voltage control circuit and the voltage and current sampling circuit, the facility establishes a closed-loop system with functions of water quality monitoring and automatic water treatment voltage adjustment. Experimental results show that the facility can realize real-time water quality monitoring in the process of wastewater treatment and automatically adjust operating voltage in line with the water quality, thus significantly reducing unnecessary energy consumption. The facility can be used in fields such as industrial circulating water treatment.

Abstract: Three dimensional geologic modeling is a powerful tool for reservoir development stages of geological study, it can solves many traditional problems existing in geological research through the establishment of precise three dimensional geologic modeling and represents an important direction for the further development of oilfield geological research. Low permeability and thin interbed reservoir of complex fault block have the characteristics of severe heterogeneity, complex relations of oil-water distribution, poor development effect, it is necessary to built high precision three dimensional geologic modeling in the process of oilfield exploration and to fine reservoir description and prediction on this basis, finally reach the purpose of reduce the risk of development and improve the economic benefit. This paper makes geological modeling research and builds structural models sedimentary micro-facies models and phased property model for Zhuzhuang block of Jiangsu oilfield by utilizing three dimensional geologic modeling technique and petrel geology modeling software on the basis of integrated using of geology, logging, oil production test, production of dynamic information, thus it provide a solid basis for reservoir's development and adjustment.

Abstract: Aircraft scheduled maintenance with their preciseness, complexity, has the characteristics of the planning, for high requirement of man-hour management. Man-hour maintenance standards data is the most important in production management of the quantization standard, which is the key to reasonable use of human resources, keep the maintenance quality, improve the production efficiency and reduce cost. According to production management system of scheduled maintenance the application requirements, business processes of production analyzed; Maintenance of production man-hour foundation database system structure, knowledge acquisition, and data warehouse etc are discussed; SQL server 2008 building database and C# language develop core program, for aircraft scheduled maintenance to offer an effective management mode.

Abstract: This paper seeks to focus on a combined waste (or: wastewater)/energy system in the deep green housing district. An innovative mixture of red and green development is presented, together with a concept of building integrated decentralized technologies for wastewater and organic waste treatment with energy and nutrients recovery. The concept is called sustainable implant. It is important to change the general attitude towards the different components of design, development, use and management of urban areas. A way to do so is the interconnection of different themes and cycles within cities. An example is the linking of sanitation to energy and food production. The paper shows the potentials of integrating solutions concerning energy and sanitation flows as near as possible to its origin of use and/or production. Introducing the analogy of the functioning of buildings (with respect to energy and sanitation flows) with that of a parasite. The system layout and the dimensioning backgrounds are explained in this paper. Additional emphasis is put on maintenance, conservation and administration of the integrated whole, and the possible consequences for the district and its inhabitants. There are scale limitations concerning the proposed (and realized) systems. Besides that there is a matter of a unique situation with an intentional community. Although two similar systems, however small, have been realized, no other project (in process of realization) can be found worldwide in which there is a linking of urban agriculture, waste (water) treatment and energy production at the scale of an urban district.

Abstract: Industry Informatization is the necessary way of industry upgrading. In the Europe and America, under the background of "re-industrialization", how to enhance core competitiveness through the deeply essential amalgamation of industrialization and Informatization is a crucial proposition. By researching the process and the saturation of the informatization in 100 industrial enterprises in Shenyang, this thesis divides the enterprises into ten types, analyses the informatization efficiency features of different types of enterprises, and try to find the way of achieving industrial upgrading by improving the informatization efficiency.

Abstract: Within the framework of nonextensive and incomplete statistical physics, we derive the E-V distribution (the extent is alterable) which is based on the deformed Shannon entropy, and discuss the revision for the traditional statistical physics (BGS) with deformed parameter q>1 and q<1 respectively, taking linear filament as an example.