Active identification card, control method thereof and attendance locating system

Abstract

Theinvention provides an active identification card which is in a card type structure. The active identification card has a double frequency emission function, and can sense a low frequency drive signal. Two cards are integrated to be a whole by combining functions of an attendance card and a locating card into a sheet of identification card. The active identification card contains rechargeable batteries capable of performing a wireless charging and is provided with light emitting diode (LED) indicator lights which can display states of working, battery voltage shortage, battery charging and the like, so that a cardholder can know the states of the card at any time. The active identification card comprises a resonance circuit II, a resonance circuit I, a limiter circuit, a rectification voltage stabilizer, a charging management circuit, rechargeable batteries, a central processing unit (CPU), an identification data (ID) emitter of the identification card and a CPU voltage stabilizer. A control method of the active identification card and an attendance locating system utilizing the active identification card are disclosed.

Description

technical field [0001] The invention relates to the communication field, in particular to an active identification card used for underground personnel positioning and wellhead attendance checking, a control method of the active identification card and an attendance positioning system using the active identification card. Background technique [0002] The downhole operator management system usually includes wellhead attendance system and downhole personnel positioning system. In the wellhead attendance system, the personnel who go down the well manually swipe their cards on the attendance machine (card reader) to obtain the exact time when each person enters and exits the well, and can count the total number of downhole personnel. Due to the short distance between the identification card and the card reader, the identification cards are mostly passive cards. This system is convenient for supervision and avoids the phenomenon of going down the well without a card or one pers...

AI Technical Summary

Problems solved by technology

However, the long working distance also brings new problems: in densely populated places at the wellhead, a large number of cards are read into the card reader at the wellhead at the same time. It matches the card holder, whether one person carries multiple cards, etc. Therefore, many mines have to use multiple methods such as personnel positioning, clocking in and attendance, or entry and exit signatures at the same time, so that the staff carry two cards at the same time to obtain more accurate information. Personnel location information

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