Advanced Materials Research Vols. 860-863

Abstract: The node localization algorithms based on distance measurement are mainly studied in this paper.A stepwise weighted positioning algorithm based on distance measurement is designed on the basis of analyzing several typical positioning algorithms,static nodes positioning under natural environment is achieved. On this basis,with STMS32 selected as a core chip in the paper,the basic system circuit and peripheral interface circuit of node device is designed,and then using the development software BeeKit and CodeWarrior for node software design,localization algorithm is testedthrough experiment.After analyzing the results,the algorithm is mostly influenced by the RSSI ranging error,the coarse positioning of node can be achieved.

Abstract: There are many Problems which Affect the Enterprise’s Operation Efficiency Seriously and Result in Material Purchase Backlog, such as the Building Materials of Data Statistics are Not Accurate, which can Not Reflect the Company's Material Inventory; Inventory Check is Time-Consuming and Tedious; Lack of Timely Feedback of Information and so on. Based on the above Reasons we Put Forward to Manage the Building Materials by Barcode Technology. this Method can Effectively Improve the Working Efficiency and make the Statistical Data Accurate, Speed up the Capital Turnover and Improve the Economic Benefit.

Abstract: The aim of this paper is to establish the existence and uniqueness of periodic solutions for a nonlinear periodic problem: in R^N where A(t, x) is a nonlinear map and B is a bounded linear operator from R^N to R^N .

Abstract: With the constant development of global information technology in building industry, different vendors utilize their own format to store building information modeling; however the incompatibility among these formats obstructs the use and share of the modeling information. Targeting the information exchange and share in each phase of the whole building lifecycle and promoting the energy saving and emission reducing buildings, this paper introduces the information on IFC standards, then discusses the mainstream share formats (.ifc and .ifcXML) in building industry, and compares and analyzes the differences between them, in order to provide leading support for the management platform of data information on building energy efficiency.

Abstract: Aiming at the burst point time measuring device cannot timely show the burst point time measurement situation, a new measuring system was designed. The pulse signal when the ammo was outing of the muzzle and exploding was detected by APD, the light pulse was converted to voltage pulse through an amplifying circuit. The timing display module was designed, the timing circuit got the voltage pulse and timing, and then the burst point time would show on LCD. All the photoelectric detector module was fixed with the special mechanical properties. The system could increase the maximum detection distance effectively, improve its detecting precision, and display the burst point time immediately. With the simulation experiment, the system had no failing to get the burst point time, and owned a stable performance. This design can provide a reference for the optimization and improvement of the burst point time measuring device.

Abstract: An intelligent module is design for monitoring air pipeline pressure on ship. The project is proposed adopting DSP as control core and employing redundant CAN bus to ensure the data transmission reliability. The key solution such as power supply, signal conditioning and communication are introduced in detail. The intelligent diagnosis and communication protocol are also discussed in the end.

Abstract: Image fusion is process which combine relevant information from two or more images into a single image. The aim of fusion is to extract relevant information for research. According to different application and characteristic of algorithm, image fusion algorithm could be used to improve quality of image. This paper complete compare analyze of image fusion algorithm based on wavelet transform and Laplacian pyramid. In this paper, principle, operation, steps and characteristic of fusion algorithm are summarized, advantage and disadvantage of different algorithm are compared. The fusion effects of different fusion algorithm are given by MATLAB. Experimental results shows that quality of fused image would be improve obviously.

Abstract: The hardware structure of a liquid level detection system for lead-acid battery was briefly introduced. The system adopts AT89C51 MCU as host module, combined with display storage, extended storage and the watch dog technology. The slave module adopts AT89C2051 MCU, which driver the linear CCD to realize non-contact measurement in acidic and corrosive conditions. The infrared transmission module uses RS-232 serial-to-infrared technology to realize wireless data delivery. The damage due to sensor corrosion could be avoided in this system. Compared with other similar equipments, this system has the advantages of simple structure, small volume, low cost, high measure precision and convenient maintenance.

Abstract: Different objects could be analyzed by use of pyramid decomposition of image. Image fusion algorithm based on pyramid decomposition of image is multi-scale, multi-resolution method. Its process is completed on different scale, different resolution and different decomposition layer. Compared with spatial fusion method, fusion effects improve obviously. In this paper, principal of pyramid decomposition and process were introduced, and simulation results of image fusion based on Laplacian pyramid, gradient pyramid, ration pyramid and contrast shows that image fusion based on pyramid decomposition is improve obviously.

Abstract: Edge detection; Fractional differential; Medical image; Noise