Research On Digital Logistics Vehicle Terminal System Based On RFID And GPS Technology

The digital logistics system is a high integrated information managementsystem based on the traditional logistics, which applies the advanced scientificmethods to be available to speed up logistics, to enhance accuracy, to decreasestockreduces, and to reduce cost. The vehicle terminal system is one of the mostimportant parts in the digital logistics. The digital logistcs vehicle terminalsystem based on RFID and GPS technology has been researched thoroughly inthis paper. The hardware and software of the vehicle terminal system has beendesigned and implemented. The main work of this paper are as follows:Firstly, the modularizational unitary design of the vehicle terminal systembased on RFID technology and GPS technology has been provided in the paper.Our study focuses on identifying RFID tags, receiving GPS data, andcommunicating the information in the digital logistcs vehicles terminal system.Secondly, the software and hardware design of the vehicle terminal systemhas been fulfilled in the paper. In the hardware circuit aspect, the main modulecircuit has been designed, jointed and tested, for instance, the acquisition circuitof RFID tags information, the receiving circuit of GPS information, the wireless 1.0%,70℃and 2h).Then Cu²⁺, Fe²⁺ and Mn²⁺ solutions were added in the pulp again. Thebleaching results indicated that,with increasing of Cu²⁺, Fe²⁺ and Mn²⁺ charge, residual H₂O₂and brightness of peroxide bleached pulps decreased. Especially for Mn²⁺, at the end ofreaction, the consistency of residual H₂O₂ was almost zero. When the dosage of Mn²⁺improveded to 25mg/kg pulp,the brightness of bleached pulp almost same the unbleached. Theresult showed that H₂O₂ was catalyzed decomposition full this time.SEM observation revealed that less short fibers of hydrogen peroxide bleached pulp wereexposed on the sheet surface, some long fibers exposed.It meaned some thin fibers degradedduring bleaching. Through observation of fiber morphology, it could found more thin fibers ofH₂O₂ bleached pulp with enzyme were saved on fiber surface.It meaned decomposition ofH₂O₂ faster by enzymatic catalytic during bleaching. So less thin fibers were degraded duringhydrogen peroxide bleaching.Through studying on the dynamics of decomposition of H₂O₂ catalysed by Mn²⁺. It wasfound that the temperature was very important to the decomposition of H₂O₂.Throughcalculating of reaction speed constant and energy of activation, it was found that Mn²⁺ had acatalysis to decomposition of H₂O₂.