| Along with the development of economy and increasing of bridge year after year, the Government and the Engineering are paying more attention to the monitoring for the bridge. After a bridge having constructed and opened to traffic, its materials will be deteciorated or aged gradually for the weather and environmental factors, and its strength and stiffness will degrade under the long-term of statistic and dynamic load, thus it will not only endanger the safety of the traffic, but also shorten the life span of the bridge. On the base of bridge structural monitoring, safety assessment is important in bridge daily service.The theis makes a feasibility analysis about the bridge monitoring system. It work out data acquisition scheme. And definite field control system and long-distance data transmission way. Then the paper proposes the structural composition of the main control room. So, it gives the overall design scheme of the bridge monitoring system.Analyses the field control system in detail. It presents the whole analytic block by using the Freescale processor MCF5272 as the CPU. The chip has the powerful extension ability. The detail hardware design are presented. The composition includes: (1) the framework of the MCF5272 center system: clock and restoration circuit, SDRAM, Flash, BDM interface circuit and so on. (2) 100M Ethernet interface circuit and GPRS communicate module. (3) ports expand circuit.At the last chapter, the embedded OSμClinux is selected to be the very important part of the Scene controlling system. The system software part, it puts emphasis on theμClinux operation system, how to cut down, compile, transplant and debugμClinux kernel, and how to realizeμClinux system on the embedded the platform, on the basis of introducing how to compile and develop Bootload.In summary, the paper completes the overall design of the bridge collapsing monitoring system. To process and transmit the bridge's data, use the embedded technology to build the field control system.
|
PDF Full Text Request