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Research Of Multi-parameter Monitoring System Of Seawater Based On BD2and GPRS

Posted on:2015-02-08Degree:MasterType:Thesis
Country:ChinaCandidate:L B XieFull Text:PDF
GTID:2181330422991690Subject:Marine science
Abstract/Summary:PDF Full Text Request
Seawater multi-parameter monitoring system is one kind of fairly important information collection system. It can obtain various marine parameters, which makes it key equipment in marine environmental monitoring. In the meanwhile, its water quality monitoring function also provides the basis for aquaculture industry to rely on, leading to large market demands for the system. Therefore, adopting advanced techniques of sensor and electrocommunication, the realization of seawater multi-parameter monitoring system is highly significant and applicable. Its characteristics contain high stability, strong adaptability and easy accessibility.The monitoring system mainly consists of acquisition system and control system, with the data communication between the two parts carried on through wireless network. The acquisition terminal mainly includes sensors, microcontroller, stepper motor, the BD2location mode and the wireless GPRS data transmission module. Taking STM32F103C8T6as core, sensors are conveyed to the specified depth by stepper motor according to the instruction which fulfills multi parameter acquisition. And the collected data is corrected and fitted as well. Afterwards, the location information collected by the location module of BD-126is analysed in accordance with NMEA0183communication protocol. And the collected data along with location information is subsequently transmitted to the GPRS module of GTM900C through serial port. The GPRS module is controlled by the AT command, the data transmitted to the control center. The control center fulfills the monitoring of system detection, seawater multi-parameter data analysis and display, the design of man-machine interactive interface, and the three-dimension stereo display of location information, utilizing the virtual instrument software of LabVIEW. In addition, the devices which bear the acquisition terminal with the waterproof and anti-corrosion ability are designed by the Solidworks mechanical drawing software, assuring the proper operation in the marine environment.Seawater temperature, salinity, oxygen content and the location information can be detected in real time by this system, and the collected data can be stored for the convenience of history observation. At the same time, the hardware component owns advantages in simple construction, light weight as well as convenience of usage etc. In times of actual detections, the error and accuracy of seawater multi-parameter measurement are analyzed. And the measured data is relatively optimized through software programming to achieve the self-correcting collected data. It is verified that each module of the system performs well through the practical tests and detailed analysis of positioning module BD-126, stepper motor, GPRS module and the control center.The system possesses fairly high acquisition accuracy, operation stability as well as strong application. Meanwhile, the hardware has the advantages of simple structure, light weight and usableness. In a word, the seawater multi-parameter monitoring system owns certain application value and practical significance.
Keywords/Search Tags:sensor, real-time monitoring, BD2, GPRS, LabVIEW
PDF Full Text Request
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