CN203276296U

CN203276296U - Positioning and monitoring system based on RFID

Info

Publication number: CN203276296U
Application number: CN 201320264679
Authority: CN
Inventors: 张瑞华
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-11-06
Anticipated expiration: 2023-05-15

Abstract

The utility model discloses a positioning and monitoring system based on a RFID. The system comprises a RFID electronic label, a positioning reader and a background monitoring management center. The RFID electronic label sends out a signal, and the positioning reader receives the signal and then transmits the signal to the background monitoring management center through a wireless local area network access point (AP) or a GPRS module. The system has high precision in measurement and positioning, is provided with visual terminal platform and low power consumption, has low operation environment and large transmission scope. While positioning an object, the system can read large amount of messages of the positioned object with hardware for encryption and decryption, so that label messages can be effectively prevented from being maliciously tampered and invalidly embezzled. The system can monitor position of the label for real-time alarm.

Description

Location and supervisory system based on RFID

Technical field

The utility model relates to a kind of positioning system, relates in particular to a kind of location based on RFID and supervisory system.

Background technology

Along with the fast development of China's economy, location-based service (LBS, Location Based Service) market potential is huge.At present, its main developing technology is GPS technology and mobile telecommunications network station technology.Location technology based on GPS is mainly used in the management aspects such as fleet, fleet, but it is difficult to be applied under indoor environment and trees, high-lager building; Movement-based telecommunications network station technology is mainly used in emergency relief, command scheduling, logistics aspect, but needs certain service fee when using.

The utility model content

The utility model is for the deficiencies in the prior art, combining wireless network, radio-frequency (RF) identification (RFID) and real-time location multiple technologies, propose a kind of location based on RFID and monitoring mechanism, and coordinated visual information location and the supervisory system of Geographic Information System (GIS).In the Monitoring and Positioning zone, system is tracing and monitoring sundry assets and personnel at any time, and accurately look for destination object, realize real-time location and monitoring management to assets, personnel.

For realizing above technical purpose, the utility model by the following technical solutions.

A kind of location and supervisory system based on RFID comprise RFID electronic tag, location reader, rear end supervision and management center; The RFID electronic tag sends signal, after the location reader receives signal, sends signal to the rear end supervision and management center by WLAN (wireless local area network) accessing points AP or GPRS module.

Described RFID electronic tag periodically sends signal in locating area, this signal comprises unique RFID electronic tag numbering, received signal strength.

Described RFID electronic tag is fixed on localizing objects, the power of location reader reception RFID electronic tag signal depends on the distance of this localizing objects and described location reader, adopt three limit localization methods to determine the position of localizing objects, and show by electronic chart.

Described RFID electronic tag adopts the CC2431 chip.

Described CC2431 chip includes AES128 security cooperate processor, realizes the encryption and decryption of information.

Described rear end supervision and management center adopts PC, operation location-server on it, described location-server is a visual software platform, location-server receives the information of sending from the location reader, pass through processing relevant information, calculate the residing particular location of RFID electronic tag, and show on electronic chart.

Described location reader has two kinds of communication interfaces, and it comprises center processing chip S3C2410, radio receiving transmitting module CC2420, antennafier CC2591, field programmable logic array (FPLA) FPGA, GPRS module SIM100S32-E and wireless network card chip RT3070.

Described field programmable logic array (FPLA) FPGA selects the fpga chip XC2V1000 of the Virtex-II series of XILINX company, and when being mainly used in communication, the hardware of AES encryption and decryption is realized.

The beneficial effects of the utility model are: bearing accuracy is high, have visual terminal platform, low-power consumption, the running environment requirement is low, transmission range is large, can also read the bulk information of localizing objects in positioning object, use hardware enciphering and deciphering, prevent that effectively label information is maliciously tampered and unauthorized theft.Simultaneously, can surveillance tag the position, Realtime Alerts.

Description of drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is topology diagram of the present utility model.

Wherein, 1, RFID electronic tag; 2, location reader; 3, rear end supervision and management center; 4, WLAN (wireless local area network).

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

As shown in Figure 1, a kind of location and supervisory system based on RFID comprise RFID electronic tag 1, location reader 2, rear end supervision and management center 3; RFID electronic tag 1 sends signal, and the location is after reader 2 receives signal, and accessing points AP or GPRS module by WLAN (wireless local area network) 4 send signal to rear end supervision and management center 3.

Described RFID electronic tag 1 periodically sends signal in locating area, this signal comprises unique RFID electronic tag 1 numbering, received signal strength.

Described RFID electronic tag 1 is fixed on localizing objects, the power of location reader reception RFID electronic tag 1 signal depends on the distance of this localizing objects and described location reader 2, adopt three limit localization methods to determine the position of localizing objects, show by electronic chart.

Described RFID electronic tag 1 adopts the CC2431 chip.

Described location reader 2 has two kinds of communication interfaces, it comprises center processing chip S3C2410, radio receiving transmitting module CC2420, antennafier CC2591, field programmable logic array (FPLA) fpga chip XC2V1000, GPRS module SIM100S32-E and wireless network card unit R T3070.

When described field programmable logic array (FPLA) FPGA is mainly used in communication, the hardware of AES encryption and decryption is realized, selects the fpga chip XC2V1000 of the Virtex-II series of XILINX company.

Described rear end supervision and management center 3 adopts PC, operation location-server on it.

The three limit location algorithm measuring accuracy that described location-server adopts depend primarily on the distance both of calculating according to the signal intensity of the label to be measured of location reader 2 receptions.The utility model adopts the localization method based on the RF fingerprint matching, a plurality of sampled points are set in locating area, RFID electronic tag 1 is placed on given sample point, the signal intensity that the signal of RFID electronic tag 1 emission is arrived location reader 2 is recorded, and sets up the signal line and indicates positioning label to arrive the distance of location reader 2.After utilizing signal line and corresponding range information building database, the signal characteristic that positioning system arrives according to real-time collecting just can calculate distance both.

In the monitoring locating areas such as community, factory, be worn on personnel with it or the RFID electronic tag 1 of pasting on article periodically send signal, after location reader 2 received signal, the signal that will contain RFID unique number and received signal strength by WLAN (wireless local area network) 4 accessing points AP or GPRS module sent rear end supervision and management center 3 to.Rear end supervision and management center 3 is according to the distance of the fixing location reader 2 of the strong and weak computing staff of signal and position, utilize three limit localization methods to judge the position of personnel or article, storage also shows by electronic chart, when the unauthorized personnel enters specific region such as secret chamber, danger memory block and report to the police.

Radio Network System based on the location is different from general communication network, requires at arbitrary location point, all can receive the signal of the location reader 2 more than 3, and send to by certain mode the rear end supervision and management center 3 that is in Surveillance center.Community, preferential shop in the location, at first be the RFID electronic tag 1 that every capital assets and personnel configuration has unique number, arrange location reader 2 according to the communication radius of locating area and location reader 2, make the everywhere of locating area realize triple coverings, namely all can be simultaneously by 2 monitorings of at least 3 location readers at the every bit in zone.

The position of location reader 2 is fixed, and by rear end supervision and management center 3 records.Location reader 2 can be by the dual mode transmission information to rear end supervision and management center 3, and a kind of mode is that location reader 2 send information to rear end supervision and management center 3 based on the GPRS module by the wireless mobile network access network.Another kind of mode be location reader 2 based on wireless aps by Internet Transmission to rear end supervision and management center 3, the wireless aps here is not the wireless location system special use, can bear common communications.During the native system design, leave the interface of this dual mode.

Although above-mentionedly by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.

Claims

1. location and supervisory system based on a RFID, is characterized in that, comprises RFID electronic tag, location reader, rear end supervision and management center; The RFID electronic tag sends signal, after the location reader receives signal, sends signal to the rear end supervision and management center by WLAN (wireless local area network) accessing points AP or GPRS module.

2. a kind of location and supervisory system based on RFID as claimed in claim 1, is characterized in that, described RFID electronic tag adopts the CC2431 chip, includes AES128 security cooperate processor.

3. a kind of location and supervisory system based on RFID as claimed in claim 1, it is characterized in that, described location reader has two kinds of communication interfaces, it comprises center processing chip S3C2410, radio receiving transmitting module CC2420, antennafier CC2591, field programmable logic array (FPLA) FPGA, GPRS module SIM100S32-E and wireless network card unit R T3070.

4. a kind of location and supervisory system based on RFID as claimed in claim 3, is characterized in that, described field programmable logic array (FPLA) FPGA selects the fpga chip XC2V1000 of the Virtex-II series of XILINX company.