支持多现场总线的超高频rfid读写器软件系统的设计与实现-计算机应用技术专业论文.docx

摘要射频识别技术(RadioFrequencyIdentification，RFID)是一项具有广泛应用前景的自动识别技术。它利用射频方式进行非接触双向通信、交换数据从而达到识别目的。本文研制支持多现场总线的超高频RFID读写器便于连接到现有多个工业控制网中，从而推广RFID技术产品在工业领域中的应用。本文以支持多现场总线的超高频RFID读写器的设计与研制为目的。根据RFID空中接口标准ISO/IEC18000-6TypeB和CAN总线、PROFIBUS总线技术标准的内容设计读写器的软件系统。首先，介绍读写器硬件系统平台，然后，说明软件系统的结构和各模块的功能，阐述对电子标签读写操作软件模块的工作原理，多标签识别模块采取分区有哪些信誉好的足球投注网站与冲突识别的方法实现对多个标签的信息读取。接着，对读写器的防碰撞问题进行研究、分析，叙述读写器防碰撞算法的实现。最后，设计现场总线的接口电路和应用层软件，读写器的现场总线选用CAN和PROFBUS集成控制器，操作使用非常方便。在研制的硬件系统平台上，对编写的系统功能软件进行调试，实际测试结果符合协议标准的要求，实现了读写器对标签信息读取、多标签的识别和现场总线串行通讯的功能。关键词:超高频;RFID;读写器;多现场总线;软件系统.万方数据I–AbstractRadioFrequencyIdentification(RFID)isakindofAutomaticIdentificationTechnologywhichhaswideapplicationprospect.Bythewayofradiofrequency，itcommunicatesandexchangesdatabidirectionallyandcontactlesslyforthepurposeofidentification.RFIDreadersupportingMulti-Fieldbusisdeveloped，whichcanbeconnectedtotheexistingindustrialcontrolnetworksconveniently.Consequently，theproductswithRFIDtechnologycanbewidelyusedinindustrialfield.ThispapermainlyintroducesthedesignanddevelopmentofRFIDreaderwhichsupportingMuti-Fieldbus，thendesignsthesoftwaresystemofthereaderbasedonRFIDairinterfacestandards-ISO/IEC18000-6TypeBprotocolandtechnicalstandardsofCAN-BUSandPROFIBUS.Firstly，itdescribesthehardwareplatform.Secondly,itintroducestheframeworkofsoftwareandthefunctionofeachmodule,proposingtheprincipleofsoftwaremodulewithoperationsoftheread/writetag,multi-tags identificationadoptingthemethodsofregionalsearchandconflictidentification.Then,theproblemofanti-collisionofRFIDreaderisresearchedandanalyzed,andsoftwareofanti-collisionalgorithmforRFIDreaderisimplemented.Finally,itdesignsapplicationlayersoftwareandthecircuitofFieldbus,theFieldbusofRFIDreaderusestheCANandPROFBUSintegratecontroller,thustheoperationisconvenient.Onthedevelopedhardwareplatform，thesystemfunctionssoftwareweredebuggedanditsactualtestresultscanmeettherequirementsofthestandardprotocol.Thefunctionsofthereaderreadinginformationfromthetag，multi-tagsidentificationandMulti-Fieldbusserialcommunicationswereim