Applied Mechanics and Materials Vols. 644-650

Abstract: For vehicle-borne LiDAR, a mathematical model is built for the computation and reconstruction of laser point cloud with the scanning data, GPS data and IMU data. 3D point cloud of the road and the scenery on the both sides of the road is obtained. Then according to the trajectory of the vehicle, 3D roaming for the scenery on the both sides of the road is realized using OpenGL 3D engine technology. This technology provides a probably feasible way for anti-collision of vehicles and aircrafts when driven at night, in the heavy fog or flying between the mountains.

Abstract: Audio and video technology, multimedia technology and computer network technology are used in the stage video surveillance and scheduling system based on IP network, which is modern stage surveillance system.The stage video surveillance and scheduling system plays a decisive role in performance, so the performance of the key equipments must be apprehended.In this paper, the components of the system are briefly introduced;then analyze needed of the pivotal equipments in detail: network video, streaming media server and the IP SAN performance.

Abstract: In the process of using the computer, there will often be some failures which causes the computer not working properly or even cause data loss. This article analyses and discusses the maintenance method of computer hardware from the perspective of common faults of computers, hoping to help you to find the computer's fault quickly and accurately, effectively trouble shooting.

Abstract: The testability design becomes one of important works to do during a design process of a system and en equipment. Whereas, the testability labor of current avionics equipments are performed after design and most of its testability results are acquired by manual statistic. In this article, taking an aviation radio’s power supply model for example, a testability model is designed based on TADS and the scientificity and practicability of this model is testified by realizing fault separation by GPTS.

Abstract: According to the array size,underwater positioning system can be divided into long baseline array, short baseline array and Ultra-short baseline array (USBL). This paper introduces USBL space positioning principle, describes the essence of direction estimation based on the phase measurement , analyses the factors that affect the positioning error, in view of the phase error, this paper introduces the method of improving positioning accuracy from extension formation.

Abstract: According to requirements of online monitoring for the working conditions of Shearer ,this article describes a monitoring network system of shearer based on DSP. The system uses a distributed sensor network and DSP technology which are better able to complete the data acquisition and data processing tasks and to get a more accurate real-time shearer signal parameters.

Abstract: This paper mainly introduces the assessment methods of bit error performance which can effect the sensitivity of the receiver in micro power wireless communication system,use simple Poisson distribution and binomial distribution to analyzes the quota such as FBR, BER and average bit error rate impact of the bit error performance. In order to enhance the accuracy and reliability of sensitivity test,we give a true random bit stream generator to improve the emission signal which is used to detect the error performance.

Abstract: In this paper on the basis of fault diagnosis for aviation equipments, an complex behavior of maintenance, IETMs are studied with respect to fault modules, data description and storage, fusion of fault trees and case-based reasoning, as well as integration with external diagnosis and other expert systems, etc., and solutions for fault diagnosis technology of IETMs are investigated to add new contents for fault diagnosis technology, so that IETMs are capable of providing further fault diagnosis strategies to maintenance personnel based on the traditional IETMs.

Abstract: To solve some problems about the substation bus voltage monitoring, a remote monitoring system based on MCU and GPRS module is designed in this paper. The system consists of data acquisition terminals, communication networks and monitoring PC. STC12C5608AD is used as the control core of the data collection terminal, which extends power modules, data acquisition modules, wireless transmission modules in order to realize the data acquisition, processing and transmission. GPRS is adopted in the communications network to realize the voltage information remote wireless transmission. Configuration software ForceControl6.0 is used in PC to realize remote monitoring. The system is tested in a lab environment, and running well.

Abstract: To detect lane from structured road, this paper presents a novel lane detection method based on feature point segmented fitting approach. Firstly, feature points are extracted from the edge image, and then segmented fitting approach based on least squares is used to obtain the line equation of feature points, and the lane recognizing criterion for fitted line equation is further proposed to detect lane. Finally, the lane tracking method is proposed to detect lane in video frames. Experimental results demonstrate that the proposed lane detection method can effectively detect lane of structured road.