根据停车场智能化管理的需要提出了系统设计思想。系统硬件设备由入口设备、出口设备和发卡设备组成，论述了它们的硬件电路设计和软件设计，并重点讨论了IC 卡读写的硬、软件设计。关键词：非接触IC 卡；ZLG500；自动收费停车；AT89C55Design and Development of Automatic Timing and Charging System Based onUntouched IC Card in Parking Lots LI Hong-jia, WEI Quan-li, XU Xiao-xiao, GUO Si-wen (College of Information and Scientific Technology, Qingdao University of Science and Technology, Qingdao 266042, China) Abstract: The designing idea of the system is put forward according to demand in intelligentized management in parking lots. The whole system is composed of entrance-machine, exit-machine and card-sender and their hardware circuits and software designing are discussed. The IC card reader which is the central part of the system hardware is introduced in detail.Key words: untouched IC card; ZLG500; automatic charging for parking; AT89C55
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