Method for realizing multichannel data collection for card

Abstract

The invention provides a method for realizing multichannel data collection for a card. The method provides a multi-serial-port CPU (central processing unit), at least two radio-frequency card reading chips with different channels and an information processing unit. The method is characterized in that each card transmits an information packet of a frame-band card number at intervals according to a first preset time, and the frequency for transmitting the information packet is one of the frequencies of two different channels; the radio-frequency card reading chip of each channel respectively receives the information packet transmitted by the card of the corresponding frequency and disintegrates the information packet; the multi-serial-port CPU acquires the information in the information packet from the two radio-frequency card reading chips and filters the information of multiple cards read by different channels at a second preset time interval; the information processing unit receives the filtered information corresponding to the card number through a serial port. By adopting the method, the phenomenon that reading of a card is omitted can be solved, the card reading speed and the card reading capacity can be improved, and the situation of the checking-in data loss caused by a large stream of checking-in people at a peak period can be avoided.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a method for realizing multi-channel data collection on a card. Background technique [0002] In applications such as attendance check of students, enterprises and institutions, a data acquisition system (card reader) is required. The traditional data acquisition system can use short-distance contactless cards or long-distance card attendance. If short-distance attendance is used, each card needs to be swiped against the card reader once, and the speed is slow. The speed of long-distance attendance is faster, and the active card sends the card number at intervals. As long as the card passes through the card reading area of ​​the card reader, it can be read by the card reader. The electronic card transmits the card number to the card reader through radio frequency. Traditional long-distance card readers generally use a dedicated radio frequency card reader chip (...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for realizing multi-channel data collection of cards, which solves the phenomenon of missed card reading, improves the card reading speed and card reading capacity, and can avoid excessive flow of attendance during peak hours Circumstances that lead to loss of attendance data

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