CN103093521A - Entrance guard system based on RFID - Google Patents

Entrance guard system based on RFID Download PDF

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Publication number
CN103093521A
CN103093521A CN 201110338781 CN201110338781A CN103093521A CN 103093521 A CN103093521 A CN 103093521A CN 201110338781 CN201110338781 CN 201110338781 CN 201110338781 A CN201110338781 A CN 201110338781A CN 103093521 A CN103093521 A CN 103093521A
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China
Prior art keywords
read
server
serial port
reader
writer
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Pending
Application number
CN 201110338781
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Chinese (zh)
Inventor
吕晓威
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吕晓威
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Application filed by 吕晓威 filed Critical 吕晓威
Priority to CN 201110338781 priority Critical patent/CN103093521A/en
Publication of CN103093521A publication Critical patent/CN103093521A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an entrance guard system based on RFID. The system comprises an electronic tag, a reader/writer, serial port communication, a server, and a user terminal. The electronic tag communicates with the reader/writer through radio frequency signals; the reader/writer completes card reading, storing, and data transmission works; the output end of the reader/writer communicates with the server through a serial port. A C/S structure is adopted between the server and the user terminal. The connection between application software and database is realized through ADO object. The application software and database are interconnected through local area network. The system provided by the invention adopts a radio frequency technology. When a non-contact-type IC card appears in a radio frequency range of the reader/writer, the IC card is read, information is transmitted to the server through serial port communication, and related data processing is carried out; a management platform based on C/S is established, such that an administrator can carry out query and control upon an entrance guard controller through a web page. Therefore, information real-time monitoring can be effectively realized at anywhere over the internet.

Description

A kind of gate control system based on RFID
Technical field
The present invention relates to a kind of gate control system, relate in particular to a kind of gate control system based on RFID, belong to RFID control technology field.
Background technology
Gate control system is called again gateway control system, is that the gateway to important area or passage manages and the system that controls.Development along with society, it has been not limited to simple management to door lock or key, but the new-modernization safety management system of collection automatic identification technology and modern management technique and one, become a part very important in security system, the occasions such as middle intelligent building, office, hotel are widely used.At present, the control device of gate control system mainly contains: fingerprint recognition, recognition of face, iris recognition and radio-frequency card etc.Front 3 kinds of modes all belong to biological identification technology, to be characterized as identification carrier and means with the human body part, its uniqueness and non-reproduction have determined that it is safest auth method, but it is expensive, be difficult to popularize, and relate to individual privacy, be only applicable to high-end and place strict confidence.
Summary of the invention
The present invention is directed to the problems referred to above a kind of gate control system based on RFID is provided, improve modern management and the remote monitoring ability of gate control system.
The present invention for achieving the above object, adopt following technical scheme: a kind of gate control system based on RFID, comprise electronic tag, read write line, serial communication, server and user terminal, described electronic tag is communicated by letter with read write line by radiofrequency signal, read write line is completed the work of Card Reader, storage and transmission data, output terminal and the server of read write line pass through serial communication, adopt the C/S structure between server and user side, Applied Software ﹠ Database connects by the realization of ADO object, and both realize interconnected by LAN (Local Area Network).
Further, described read write line comprises read-write chip, power circuit, primary controller, serial port module, PC, door lock driver module, alarm indication circuit, described power circuit respectively with read-write chip, primary controller, serial port module is two-way is connected, the output terminal of read-write chip connects the input end of primary controller, primary controller respectively with serial port module, door lock driver module, the alarm indication circuit is two-way is connected, the output terminal of serial port module connects the input end of PC.
The invention has the beneficial effects as follows: the present invention adopt wireless radio-frequency RFID realize without key dissolve into, be difficult for loss, reusable; Adopt SQL database and Web service to realize gate inhibition's remote monitoring, easy to operate, flexible and safety has broad application prospects in occasions such as Smart Home, office's discrepancy, logistics.
Description of drawings
Fig. 1 is system principle diagram;
Fig. 2 frequency read/write structure principle chart.
Embodiment
Describe below in conjunction with the technical scheme implementation method of accompanying drawing to invention: as shown in Figure 1, system adopts non-contact IC card, utilize radio RF recognition technology RFID (RadioFrequencyIdentification) to detect IC-card, when the close read write line of IC-card, read write line can be exactly to its identification, and its sequence number is sent to primary controller and PC, connect background data base by application program and obtain the user profile corresponding with this card number.If this card is registered, open the door by checking and notification controller, and record card number and open the door the time, otherwise no through traffic and inform that the holder leaves.System is comprised of electronic tag, read write line, serial communication, server and user terminal five parts.Read write line is the core of system, and it is communicated by letter with IC-card (electronic tag) by radiofrequency signal, completes the work of Card Reader, storage and transmission data, and it can work alone, and the work of also can networking adopts the RS232 serial communication to be connected with server in literary composition.Adopt the C/S structure between server and user side, Applied Software ﹠ Database SQLSERVER2000 connects by the realization of ADO object, and both realize interconnected by LAN (Local Area Network).In the situation that system manager's granted rights, with can inquire about per family, all relative recordings of statistics, print management system.
As shown in Figure 2, frequency read/write is the core of system, by the electric circuit constitutes such as governor circuit, radio frequency read/write circuit, aerial coupling circuit and antennas, be responsible for the processing of radiofrequency signal and the transmission of data, complete the task electronic tag that the IC-card sequence number is read, namely radio-frequency card, be comprised of IC-card sheet, induction antenna, be encapsulated in the PVC card of a standard, chip and antenna thereof are without any exposed parts.Card need not power supply, during within the specific limits near read write line, completes the read-write operation of data by the transmission of antenna.This paper selects the Mifarel card of Philips company, and this blocks based on the ISO14443TYPEA international standard, and every jig has globally unique sequence number, has anti-collision function.
The effect of antenna is exactly to produce magnetic flux, for card provides power supply, and transmission information between read write line and card.The effective field scope of antenna is exactly effective perform region of system.Read-write chip is chosen the special chip MFR500 that is used for read-write Mifarel card that Philips produces, and frequency of operation is 13.56MHz.Primary controller is comprised of AT89S52 single-chip microcomputer and peripheral circuit thereof, be responsible for to control between module for reading and writing and PC serial communication and to the control operation of external unit.Wherein single-chip microcomputer is exactly to realize operation to the Mifarel card by controlling MFRC500 to the operation of module for reading and writing.It is the bridge of data transmission between single-chip microcomputer and IC-card.The core of radio circuit is read-write chip MFRC500, and it is the bridge of data transmission between single-chip microcomputer and IC-card.Single-chip microcomputer adopts read-write chip and interrupts control mode, interrupts controlling a mouthful INT0 and is connected with the IRQ pin of MFRC500.There are 64 registers MFRC500 inside, single-chip microcomputer is configured and operates it by write control command in register, wherein detection of power loss pin RSTPD connects single-chip microcomputer P2.0 pin, the NCS pin connects the P2.7 pin, NWR, NRD are connected to respectively single-chip microcomputer reading-writing port WR, RD pin, data port D0~D7 is connected to the frequency of operation that single-chip microcomputer P0 mouth quartz oscillator produces 13.56MHz, and the low-pass filter that L1, L2, C5, C6 consist of is used for suppressing the produced simultaneously higher hamonic wave of crystal oscillating circuit.Receiving circuit is comprised of R1, R2, C3, C4, adopt the inner VNID electromotive force that produces of MFRC500 as the input electromotive force of RX pin, for reduce disturbance, the VIND pin connects a capacitor C 3 to ground, and must connect a voltage divider (R1) between RX and VNID, the electric capacity (C4) of preferably also contacting between aerial coil and counter pressor.In order to obtain better performance, when circuit board wiring, these elements should be near MFRC500 antenna component pin RX, TX1, TX2.
In order to obtain reliable and stable radiofrequency signal, the performance of antenna is most important, and it has directly affected operating distance and the sensitivity of read write line.The performance of antenna is relevant with its quality factor q, and the factor such as the geometric configuration of Q and antenna, size, number of turns is relevant.System be manifold type IC-card closely, antenna is made and is selected the PCB antenna, namely directly makes antenna circuit board on pcb board, this method stability better.When antenna is connected to read-write chip, need to add match circuit.System has carried out roughly estimation to antenna, and by changing the capacitance of match circuit, to reach best reading/writing distance.

Claims (2)

1. gate control system based on RFID, it is characterized in that, comprise electronic tag, read write line, serial communication, server and user terminal, described electronic tag is communicated by letter with read write line by radiofrequency signal, read write line is completed the work of Card Reader, storage and transmission data, and the output terminal of read write line and server adopt the C/S structure by serial communication between server and user side, Applied Software ﹠ Database connects by the realization of ADO object, and both realize interconnected by LAN (Local Area Network).
2. a kind of gate control system based on RFID according to claim 1, it is characterized in that, described read write line comprises read-write chip, power circuit, primary controller, serial port module, PC, door lock driver module, alarm indication circuit, described power circuit respectively with read-write chip, primary controller, serial port module is two-way is connected, the output terminal of read-write chip connects the input end of primary controller, primary controller respectively with serial port module, door lock driver module, the alarm indication circuit is two-way is connected, the output terminal of serial port module connects the input end of PC.
CN 201110338781 2011-11-01 2011-11-01 Entrance guard system based on RFID Pending CN103093521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110338781 CN103093521A (en) 2011-11-01 2011-11-01 Entrance guard system based on RFID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110338781 CN103093521A (en) 2011-11-01 2011-11-01 Entrance guard system based on RFID

Publications (1)

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CN103093521A true CN103093521A (en) 2013-05-08

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104217483A (en) * 2014-09-12 2014-12-17 四川奇御科技开发有限公司 Campus security monitoring system
CN105374092A (en) * 2015-11-10 2016-03-02 镇江东软信息技术有限公司 Intelligent residential district management system database design method
CN108171944A (en) * 2016-12-08 2018-06-15 上海慧流云计算科技有限公司 Apparatus control method and device
CN108734831A (en) * 2018-04-26 2018-11-02 安徽展航信息科技发展有限公司 A kind of Civil Aviation Airport access control system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104217483A (en) * 2014-09-12 2014-12-17 四川奇御科技开发有限公司 Campus security monitoring system
CN105374092A (en) * 2015-11-10 2016-03-02 镇江东软信息技术有限公司 Intelligent residential district management system database design method
CN108171944A (en) * 2016-12-08 2018-06-15 上海慧流云计算科技有限公司 Apparatus control method and device
CN108734831A (en) * 2018-04-26 2018-11-02 安徽展航信息科技发展有限公司 A kind of Civil Aviation Airport access control system

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Addressee: Lv Xiaowei

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Application publication date: 20130508