可靠读写IC卡智能燃气表

Reliable Read and Write IC Card Intelligent Gas Meter

现有IC卡智能燃气表在读写卡时,IC卡有一部分露在卡座外部,在未完成读写卡全部操作时,很容易发生用户误操作拔卡或者快速重复插卡的现象,造成单片机读写卡错误。提出一种可靠读写IC卡的方案,在单片机检测到用户插卡后,控制进卡驱动电路模块,把IC卡整体吞入卡座中,读写卡过程中用户无法拔卡;完成读写卡后,单片机控制退卡驱动电路模块,把IC卡退出卡座。论述可靠读写IC卡智能燃气表的结构组成、工作原理、工作流程。

When the existing IC card intelligent gas meter reads and writes the card, part of the IC card is exposed outside the card holder. When all the operations of card reading and writing are not finished, the phenomena of user misoperations such as pulling out card or fast reinserting card easily occur, resulting in microcontroller reading and writing card error. A relia- ble read and write IC card scheme is put forward. After the user card is detected, the microcontroller controls the card-feeding driver circuit module to swallow the overall IC card into the slot, and the user can not pull out the card during reading and writing card. After reading and writing card, the microcontroller controls the card-returning driver circuit module to remove the IC card from the slot. The structural composition, working principle and workflow of reliable read and write IC card intelligent gas meter are discussed.