Advanced Materials Research Vols. 718-720

Abstract: Monitoring the illegally occupied channels is very important for the management and regulations of reservoirs. This paper proposes an automatic and efficient approach to identify the changes in the river course with geographic information system and global position system using multi-temporal remote sensing images. Unlike the traditional river course monitoring system, this approach is mainly based on the change detection information extracting from multi-temporal high spatial resolution remote sensing images. Firstly, change detection from different information of multi-temporal remote sensing images are applied to obtain the change information thematic maps which can be used as working maps for on-site investigation are extracted. Secondly, GPS-RTK measurement technology is used to obtain 3-D position information of the terrain features points in those channel occupied areas. Then, an approach for calculating the volume of the channel occupied area is designed and developed by ArcGIS software using multi-temporal remote sensing images, 3-D position information and historical digital terrain date of channel occupied area. Finally, channel occupied area volume data and thematic maps are acquired by ArcGIS software. The data of reservoir is selected as experimental area, and the experiments have confirmed the high efficiency and accuracy of this approach proposed in this paper.

Abstract: Insitu tests are mostly considered to be cheap, quick and they are used sometimes to measure certain insitu properties ,such as modulus and lateral stress not readily evaluated by laboratory tests. A form of insitu investigation which is receiving increasing recognition is the pressuremeter. The pressuremeter devices and tests experienced extensive development in both , the technical aspects and the interpretation theories which been used extensively in several testing laboratories . In the present research a comparison between different theories used to evaluate the pressuremeter tests where different were found when using different results for the same test .

Abstract: Aerosols are important species in the Earths atmosphere and influence both air quality and climate in many important. In this article the relationship between IR absorption bands and SO₄^2- was discussed. Theν3 band of SO₄^2- in FTIR Spectra was studied when used as Na2SO4 . The results indicated that the peak positions of SO₄^2- were 984 cm-1 and 1133cm-1. And the relation between these peaks aera and the quality of SO₄^2- was well linear. And we give the value of α in band of 900-1300 cm-1. we measured all of the samples on the Ge and not a point, so the quantitive was not been affected by the nonuniform sample on Ge.

Abstract: This work proposed a method for processing of microscopic images of complex structural non-crystalline objects. The declared approach assumes procedure of system parametrization of images without procedure of allocation of components. It is based on concept of fields of anisotropy inhomogeneities on microscopic images. On an example of images of a microrelief spinning tapes effectiveness of the given procedure for reception of quantitative characteristics about objects is shown. The entered factor of anisotropy has allowed to allocate multiscale character of morfo-inhomogeneities interfaces of tapes and has allowed to describe process of spining depending on technological modes of reception. It is shown, that the further progress of the given approach can be carried out by methods of informo-dynamics.

Abstract: With the virtue of accuracy, fast and convenience, truck scale is more and more applied to weighing transport cargo weight. The computer and communication system is developed rapidly. The truck scale of the enterprises is distributed widely and the truck scale on-line weighing data is difficult to monitoring. The truck scale remote weighing monitoring system based on the CAN bus is designed in the paper. The SCM of the on-time remote weighing system is designed. The MCU of SCM is 89C2051 and the A/D is ADC0809. The weighing measurement data is collected by the MCU and sent to the upper monitoring system through the CAN bus. The experiment result indicates that the truck scale remote weighing monitoring system can on-line measure the transport cargo weight and improves the communication efficiency and accuracy.

Abstract: The Volterra series are a functional series.Its kernals both in time domain and frequency domain have definite physical significance and are independent with the system input. Thus the kernals can reflect intrinsic nature of the system. Thus the Volterra series can be used to analyze the nonlinear analog circuit.The fault feature can be extracted based on the direct analysis on the frequency response of nonlinear analog circuit so as to detect the fault in nonlinear analog circuit.

Abstract: Using the high precision three-dimension thermal deformation measurement equipment, the data of differential linear expansion coefficient of several materials used in microwave equalizer were got, and the thermal deformation of resonant cavity and the probe of typical structural were measured exactly. Therefore, the internal relationship between the thermal deformation and the shift of equalized property can be concluded. According to the precise data of the thermal deformation measured, the methods, such as materials compensation and structural compensation, were used to guarantee the properties of equalizer at different working temperatures.

Abstract: Aiming at the low automation level and the non-completeness of the fault diagnosis technology for the band sawing products in China and in our province, this paper studied the digital control system based on extracting the flutter amplitude characteristics of the band saw blades in real time, developed the adjustable device which clears the sticky chips between the saw teeth based on the brush friction change according to the inclination angle Φ between the brush disk and the saw blade, and designed the state recognition system for the hydraulic oil circuits of the sawing machine based on detecting real-timely the oil temperature, pressure, flow rate and hydraulic cylinders displacement and transmitting wirelessly. So it can improve the grade, efficiency, reliability and service life for the band sawing machine.

Abstract: For the deep-hole drilling bit works in closed or half-closed condition and the cutting situation can not be observed and controlled directly, it brings a big challenge to monitor the cutting tools and the cutting process. To solve the problem, improved testing methods and data processing techniques were developed. A new condition monitoring method of deep-hole drilling based on multi-sensor data fusion was discussed in the paper. The signals of vibration and cutting force were collected when the condition of deep-hole drilling on stainless steel was normal and abnormal. Four eigenvectors were extracted on time-domain analysis and frequency-domain analysis of the signals. Then the combined four eigenvectors were sent to BP neural networks data fusioning center. The fusioning results indicate that cutting force signal can reflect the condition of drill bit better than vibration signal and multi-sensor data fusion is superior to single-sensor.

Abstract: In the image process, intensity differs from its true value because the quantization process restricts image pixels to lie on an integer grid, and phase quantization error is introduced. In this paper, we propose a theory of using an intensity-correcting to overcome phase quantization error. According to the distribution of the intensity error in some pixels, the mathematical model of the intensity error is reconstructed to correct intensity values and reduce phase quantization error. Using specific example deduct the intensity-correction algorithm. At last, we compare the uncorrected quantization error and the quantization error after correction, and prove that the principle of this algorithm is right.