Automatic Control Laboratory Equipment Management System Based On RFID

Laboratory equipment management is both an inseparatable part of universitymanagment and an important approach of developing students’ engineering innovation ability.A high-performance management of laboratory can fully mine the potential of laboratoryresource, improve the using rate of devices, and reduce the labor intensity of managers. Butbecause of historical and objective reasons, there are some problems which are the complexityof querying device information, the unsmooth flowing of information sharing and the lowusing rate of equipment.With the arrival of information age, internet of things is proposed by people, whichcombines physical infrastructure and IT infrastructure as a unified one to become a internetconsisting of things finally. As one of the key technics of the internet of thing radio frequencyidentification (RFID) is a kind of automatic identification technology based on the computerand communication technologies. It can marking and identifies every thing in a variety ofcircumstances, which helps people to deal large data duly and accurately.For the problems of laboratory equipment management, the thesis designs an automaticcontrol laboratory equipment management system combining the thought of internet of things.It can increase inventory velocity, read equipment information and modify equipment statusquickly and easily. So it will have the advantage of reducing labor intensity of managers andincreasing the degree of information and the efficiency of management.The thesis completes the automatic control laboratory equipment management systembased on RFID technology in the aspects of hardware and software.Firstly, system frequency is determined according to the system function and theperformance index. Then reader protocol, data encoding and functions of software aredesigned and the anti-collision algorithm is analysed and chosen. Through these the overalldesign scheme is finished. The Bayesian estimation algorithm is improved in practical and iscompared with other algorithms in the horizontal and vertical.Secondly, nRF24L01is chosen as the radio transceiver, and the hardware of reader andtags are designed and debugged. One tag that attached to one device stores the deviceinformation. And the reader can identify, read and write the tags to check or modify theproperties of devices.Then, hardware drivers of reader and tag are achieved. On the basis of the readerprotocol and system hardware, the method of state machine is used in tag to response the reader, and each models of reader are developed.Next, according to the design requirements, upper monitor dealing with systeminformation synthetically is developed by Visual C++to control reader and to access the SQLServer2000database which stores the detail information of devices.Finally, the problems in system debug are analysed and resolved. The system reaches therequirement of design basically.