Research And Application Of FBG Demodulation System Based On GPRS

With the rapid development of network and communication technology, GPRS-basedremote, wireless, real-time, intelligent monitoring systems in the field of industrial control,transportation, production and life has a very wide range of applications and is playing ahuge role. The embedded systems that are applied to the remote, wireless, real-timemonitoring system, can make to the information collected by the monitoring site localizedtreatment, can effectively reduce the complexity of information processing for remotemonitoring center server and can improve the performance of the monitoring center servergreat help.In this paper, the vehicle after the bridge the bridge dynamic deformation study usingFBG sensing demodulation system based on linear filter to detect the deformation of thebridge, and the information contained in the wavelength, the text demodulation thewavelength to abtain the bridge shaped variable. With the GPRS-based remote wireless,real-time monitoring system, to achieve real-time, intelligent monitoring of bridge-shapedvariable, so that the staff can complete the bridge state monitoring in a remote roommonitoring center. The monitoring system uses a SAMSUNG ’s ARM11-S3C6410as thecentral processor, the SIMCOM company SIM300GPRS module the bridge deformationinformation in real time, wireless transmission, and combined with the TVP5150videodecoder chip, surveillance cameras and3G module MC2576scene of bridge video orpictures uploaded to the master control center for the collection.The monitoring center can send control commands to each remote monitoring site’smonitoring equipment, remote monitoring site’s monitoring equipment according to thecommands to send monitoring site’s information to the monitoring center, to achieveinformation interaction. The monitoring device using the GPRS wireless network totransmit information, the transmission distance of the information from tens of meters tohundreds of kilometers, or even thousands of kilometers to fully meet the requirements ofthe normal industrial monitoring system. This article FBG sensor demodulation system based on the linear filter as the variableacquisition sensors for information acquisition, the deformation of the bridge contained inthe the FBG reflected light wavelength. By demodulating the wavelength of the reflectedlight can obtain deformation, compared with the traditional electric sensors the FBGsensors have strong anti-jamming capability.