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Research and Design of the Cable Surface Image Acquisition and Transmission System Based on DSP

Author: WangShengZhi
Tutor: ZhouYi
School: Chongqing University
Course: Mechanical and Electronic Engineering
Keywords: DM642 Network transmission GPRS Wireless Transmission
CLC: U448.27
Type: Master's thesis
Year: 2010
Downloads: 71
Quote: 1
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Abstract


The rope as the main force component of the cable-stayed bridge , the destruction of the surface to the bridge a lot of insecurity . Therefore it must be accurate and efficient detection . Image capture and transmission technology based on image recognition instead of the traditional manual inspection to become one of the hot spots . Compared with the traditional manual inspection , detection of low cost and high security , has a broad application prospects . Therefore , the the cable surface image acquisition and transmission system development has important significance . Through analysis of this subject the background as well as domestic and foreign research status , a new type of based DSP ropes surface image acquisition and transmission system solutions , completed the design and development of the system . The system consists of two parts of the client and server . Client is DM642 platform , three-way CCD camera , CPLD , Ethernet port and GPRS wireless modem which is responsible for the collection, storage , processing and transmission of the cable surface image ; server into a PC institutions of connecting to the Internet , is responsible for image data reception, decoding, real-time display and preservation. This paper first introduces DSP technology and GPRS network technology associated with the system , then the overall design of the system and the hardware block diagram . On this basis , the article focuses on the network transmission of the image , and wireless transmission based on GPRS technology to achieve extended . Network transmission system is divided into two major hardware and software design . The hardware part introduces the principle of image acquisition, storage , the Ethernet transmission module hardware interface design and CPLD control module ; software part of the client and server programming . Client part including image acquisition , JPEG compression and network transmission programming ; server-side include: image receiving , decoding , real-time display and save the program design . The wireless transmission part introduces the wireless module interface design , the GPRS modem access GPRS network , as well as send and receive data through a wireless modem . Finally, the experimental conditions of the entire system . By experimental results show that the system can capture the image in real time and transmitted to the ground server reaches a predetermined target of this topic .

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Cable-stayed bridge
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