Advanced Materials Research Vols. 268-270

Abstract: Using ANSYS program, the finite element simulation based on Fluid-Solid coupling is conducted by a series of procedures, such as three-dimensional model building of airflow level posture sensor according to the actual size of the proportion, network modifying, loads applying and equation solving. The flow field in three-dimensional hermetic chamber of sensitive element of airflow level posture sensor is calculated. The numerical results show that: 1) The velocity difference of air flow at two heat source changes with the tilt angle, the difference between airflow velocity increases with the increase of the tilt angle. 2)Compared with two-dimensional modeling, the simulation result of three-dimensional modeling and fluid-solid analysis methods are more comprehensive and accurate, which provides more reliable basis for practical research of the airflow level posture sensor.

Abstract: Using ANSYS-FLOTRAN CFD program, the finite element simulation is conducted by a series of procedures, such as three-dimensional model building of airflow inclination sensor, network modifying, loads applying and equation solving. The flow field caused by the two heats in three-dimensional hermetic chamber of sensitive element of airflow level posture sensor is Calculated, FEM analysis has been obtained. The numerical results show that compared with two-dimensional modeling, the simulation result of three-dimensional modeling are more comprehensive and accurate, which provides more reliable basis for practical research of the airflow inclination sensor.

Abstract: In order to improve linearity of output signal of air level posture sensor, this article do the research about linearity to output signal based in the operation function of single chip of MSC1214, uses the ORIGIN software to process experiment data to get the linearity curve. The result indicates that misalignment of sensor drops to ≤1% in full scale scope, linearity between output voltage and the input angle has the enormous improvement, depressing the influence caused by angle approximation and improving the measurement accuracy of air level posture sensor.

Abstract: Sensitive principle of air level posture sensor is introduced and test to the actual manufacture's sensor is carried on. The test result indicates that the temperature’s influence to the sensitivity is suppressed basically; the operating temperature scope expands from the normal temperature to 30°C; the resolution surpasses over 0.1°; misalignment of air level posture in full scale scope is smaller than 1%，measuring range the angle of tilt may achieve to 20°.

Abstract: Coal mine safety information’s remote monitoring, browsing, querying is the general trend of Chinese coal industry information development. The paper analysis coal mine safety monitoring based on heterogeneous data sources, depth study heterogeneous data integration technology. At last, the paper proposed and designed based on OPC technology heterogeneous data integration’s overall program of coal mine safety monitoring. After tested the system is stabled and achieved good results in practice.

Abstract: The method of applying prestress to CFRP plates can make full use of the characteristics of high-strength, enhance the force properties, prevent peeling damage and reduce the strain lag. Construction technology of prestressed CFRP plates strengthening reinforcement concrete beams was introduce in this paper, and bending test of 6 reinforcement concrete beams strengthened with prestressed CFRP plates were carried out based on the self-developed prestressed CFRP plates supporting anchorages. The test results indicate that the flexural capacity and crack resistance capacity can be increased compared with non-prestressed CFRP plates, and the construction technology can be adopted in practical projects.

Abstract: This paper, with the concern in view, has presented here a multiobjective optimiza- tion model. By generalizing parameters from the construction process of a team at di_erent stages and from di_erent angles, and by comparing them to the set optimization goal, this model aims to evaluate the outcome of the construction of a team in an accurate and fair way. And by steering clear to the greatest extent of the inuence of the individual or subjective factors, the model also strives to derive a better result from the equal input in the construction of an excellent teaching team.

Abstract: The thesis analyzed the actuality and the problems that existed in the “basis of computer engineering” courses, put forward the case teaching program with an interpretation of its theoretical basis, and discussed the practical implementation in detail. It has been found that, case teaching can greatly improve students’ initiative and creativity in study, and has acquired better teaching results.

Abstract: Considering present situation of scientific and technological development and also employment, this paper stated the significance and urgency to cultivate creative talents. Totally six innovative projects were brought forward on account of the existing problems of experimental teaching in universities, including building up creative experimental programs, combining employment and the electronic designing competition, strengthening the development of lab, enhancing teachers’ capacity of experimental teaching, providing Technical training and relative service to society, etc. Anyhow, some teaching reforms have been under implementation, and improved with good effect.

Abstract: Directing at the characteristics of the basic chemistry, the paper discusses the characteristics of the “Inorganic chemistry”, “organic chemistry”, “physical chemistry” and “analytical chemistry”, and points out that application of multimedia in the basic chemistry is in line with student’s learning and cognitive rules. And multimedia teaching can greatly improve the teaching efficiency, extend the class size and optimize the teaching effect, which is an important way to teaching reform of course in the Information Age. Then it analyzes the unique role played in teaching by media. While, if multimedia technology is not rationally used in this field, the results will be counterproductive. We try to display the advantages of multi-media teaching and strive to overcome its fault in the teaching process. We also do some discussion on the effects of improving the teaching continuously.