CN205211003U - Campus vehicle information acquisition device based on RFID - Google Patents
Campus vehicle information acquisition device based on RFID Download PDFInfo
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- CN205211003U CN205211003U CN201521063080.1U CN201521063080U CN205211003U CN 205211003 U CN205211003 U CN 205211003U CN 201521063080 U CN201521063080 U CN 201521063080U CN 205211003 U CN205211003 U CN 205211003U
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Abstract
The utility model relates to a campus vehicle information acquisition device based on RFID, this kind of campus vehicle information acquisition device based on RFID's microprocessor connects RFID radio frequency card reader and USB memory, and RFID radio frequency card reader connects loop aerial, and microprocessor connects the PC host computer, and microprocessor still connects the audible alarm ware, microprocessor has the S3C44B0X chip, and RFID radio frequency card reader has the MFRC531 chip, and the ALE pin of MFRC531 chip connects the high level, and the A0 of MFRC531 chip, A1, A2 correspond A0, A1, the A2 who connects the S3C44B0X chip respectively, and chip selection NCS signal meets the nGCS3 of S3C44B0X chip, and reset input RSTPD meets GPF0, CCD digit camera connection license plate image processing DSP chip, microprocessor is connected to the DSP image processing ware. The utility model discloses to campus inside vehicle adoption IC card identification mode, to the outside vehicle adoption vehicle license plate image recognition mode in campus, can gather and the record all kinds of vehicle information of passing in and out the campus to report to the police to suspicious vehicle.
Description
Technical field:
The utility model relates to information collecting device, what be specifically related to is campus vehicle information collecting device based on RFID.
Background technology:
Along with the development of economy and automotive engineering, automobile has become the very universal vehicles.The quantity rapid growth of current campus vehicles passing in and out, interior vehicle and exterior vehicle pass in and out that situation is very difficult to be grasped, and in the past only with the mode inefficiency of manual record and statistics, workload was large.Therefore effective collecting vehicle information technology can help to ensure public security and better manage vehicles passing in and out, also can prevent the discrepancy of suspect vehicle in advance, and for produce evidence to the process of illegal vehicle, thus reduce potential safety hazard.
Summary of the invention:
The purpose of this utility model is to provide the campus vehicle information collecting device based on RFID, and this campus vehicle information collecting device based on RFID is for solving the problem of current campus vehicles passing in and out by the mode inefficiency of manual record and statistics.
The utility model solves the technical scheme that its technical matters adopts: this campus vehicle information collecting device based on RFID comprises microprocessor, RFID radio-frequency card reader, tours antenna, CCD digital camera, DSP image processor, USB storage, PC main frame, microprocessor connects RFID radio-frequency card reader and USB storage, RFID radio-frequency card reader connects tours antenna, microprocessor connects PC main frame, and microprocessor also connects voice guard; Microprocessor has S3C44B0X chip, RFID radio-frequency card reader has MFRC531 chip, the ALE pin of MFRC531 chip connects high level, A0, A1, A2 corresponding A0, A1, A2 connecing S3C44B0X chip respectively of MFRC531 chip, sheet selects NCS signal to meet the nGCS3 of S3C44B0X chip, and the input RSTPD that resets meets GPF0; CCD digital camera connects license plate image processing DSP chip, and DSP image processor connects microprocessor.
The campus vehicle information collecting device based on RFID described in such scheme also comprises multiple electronic tag, electronic tag is IC-card, each IC-card configures to registered vehicle in the school respectively, IC-card and the mutual signal transmission of tours antenna, LC series resonant circuit is set in IC-card, under the electric magnetization that LC series resonant circuit sends at tours antenna, produces resonance.
In such scheme, DSP image processor adopts TMS320C5416 digital signal processor, and voice guard is loudspeaker.
The utility model has following beneficial effect:
1, the utility model realizes the information of vehicles automatically gathering out people's school gate, IC-card recognition method is adopted to campus interior vehicle, license plate image recognition mode is adopted to campus exterior vehicle, can to the various types of vehicles information in turnover campus and record, analysis and the statistics of various reasonable can be carried out by the registration situation of campus interior vehicle, some licence plate is set as suspect vehicle, and suspect vehicle is reported to the police.
2, the utility model have low in energy consumption, processing speed fast, be easy to integrated advantage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is S3C44B0X chip and MFRC531 chip connection diagram in the utility model;
Fig. 3 is S3C44B0X chip and TMS320C5416 digital signal processor connection diagram in the utility model.
1 microprocessor; 2RFID radio-frequency card reader; 3 tours antennas; 4 main frames; 5IC card; 6 voice guards; 7DSP image processor; 8CCD digital camera.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, this campus vehicle information collecting device based on RFID comprises microprocessor 1, RFID radio-frequency card reader 2, tours antenna 3, CCD digital camera 8, DSP image processor 7, USB storage, PC main frame 4, multiple electronic tag, microprocessor 1 connects RFID radio-frequency card reader 2 and USB storage, RFID radio-frequency card reader 2 connects tours antenna 3, microprocessor 1 connects PC main frame 4, microprocessor 1 also connects voice guard 6, and voice guard 6 is loudspeaker.Microprocessor 1 has S3C44B0X chip, and RFID radio-frequency card reader 2 has MFRC531 chip; Tours antenna 3 can realize remote read-write.CCD digital camera 8 connects license plate image processing DSP chip, DSP image processor 7 connects microprocessor 1, DSP image processor 7 adopts TMS320C5416 digital signal processor, and S3C44B0X chip and TMS320C5416 digital signal processor connected mode consult Fig. 3.
S3C44B0X chip, the hardware resource that this chip provides has: the ARM7TDMI kernel of 2.5V is with 8Kcache; Optional internal SRAM; Lcd controller; 2 passage UART; 1 passage SIO; The general DMA of 2 passage; 2 bus DMA that external request pin is provided; 8 exterior interrupt; There is the RTC etc. of time clock feature.There is the several functions such as system management, Cache and internal storage, interruptable controller, timer, UART.
In order to the data on RFID radio-frequency card reader 2 correctly can be read, the interface of S3C44B0X chip and MFRC531 chip is adopted independently address/data bus, adopt parallel port mode, as shown in Figure 2, the ALE pin of MFRC531 chip is connect high level, the A0 of MFRC531 chip, A1, A2 is the corresponding A0 connecing S3C44B0X chip respectively, A1, A2, sheet selects NCS signal to meet the nGCS3 of S3C44B0X chip, the input RSTPD that resets meets GPF0, by determining the duty of radio frequency part to the GPF0 pin control operation of S3C44B0X chip, message exchange between this interface primary responsibility RFID radio-frequency card reader 2 and PC main frame 4 and transmission, mainly complete the functions such as the turnover control of RFID radio-frequency card reader 2.
Electronic tag is IC-card 5, arranges independent No. ID, for identifying vehicle in each IC-card 5; Each IC-card 5 configures to registered vehicle in the school respectively, and IC-card 5 and tours antenna 3 signal transmission each other, arranges LC series resonant circuit in IC-card 5, produces and resonate under the electric magnetization that LC series resonant circuit sends at tours antenna 3.
MFRC531 chip is connected by TX1, TX2, RX and VMID with the interface of tours antenna 3, TX1, TX2 are responsible for the radiofrequency signal after modulating and output to tours antenna 3, excitation tours antenna 3 generates electromagnetic waves and signal is outputted to electronic tag, the subcarrier signal that RX pin is received by tours antenna 3 after then receiving electronic tag modulation, signal becomes the data received after demodulating and decoding.
In the utility model, microprocessor 1 also connects voice guard 6, in the course of the work the vehicle license gone wrong is recorded, and be set as suspect vehicle, automatic alarm is realized to suspect vehicle turnover, and while warning, this information is uploaded in PC main frame 4, make timely process to facilitate school Security Department.
Utility model works process:
(1) tours antenna 3 constantly sends the electromagnetic wave of one group of fixed frequency towards periphery.When the card (IC-card 5 on vehicle) that frequency is identical enters its perform region, system starts RFID radio-frequency card reader 2, carries out information acquisition; Otherwise, start image processing data acquisition module and carry out Car license recognition.
(2) when the card (IC-card 5 on vehicle) that frequency is identical enters its perform region, the LC series resonant circuit in card produces resonance under electric magnetization, is the capacitor charging in card.At the other end of electric capacity, be connected to the electronic pump of an one-way conduction, delivered to by the electric charge in electric capacity in another electric capacity to preserve and work as accumulated electric charge when reaching 2V, this electric capacity can be integrated circuit and provides operating voltage.Relevant controlling logical circuit in card integrated circuit is decoded to the received signal.Judge according to decoded information the order request that tours antenna 3 is sent, if reading information then control logic circuit read for information about from IC-card storer; If 2V operating voltage is then brought up to 15V from relevant controlling logic trigger voltage pump by amendment information, to carry out reprogramming to content in IC-card 5 storer.When capacitor discharge, the data message read from IC-card 5 storer and relevant information are just sent to tours antenna 3 by the radiating circuit in non-contact card.Tours antenna 3 pairs of information process, and information are sent to microprocessor 1, then are uploaded in PC main frame 4 by microprocessor 1 and carry out processing and preserving.
(3) the license plate image identification course of work: use CCD camera lens that vehicle license is adopted integrated digital image, send DSP image processor 7 to after converting image to digital signal by USB interface to process, DSP image processor 7 first carries out wavelet transformation to the digital signal that transmission comes, re-use wavelet coding technique and vehicle license image is carried out rim detection and characteristic matching, export after identifying license number, DSP image processor 7 is connected with microprocessor 1, and microprocessor 1 controls the duty such as storage and communication of whole device.
(4) storage of information and process: main frame 4 can realize wired and wireless two kinds of modes and transmit the data after encoding, wired mode is by the built-in ethernet mac of S3C44B0X, and the devices such as additional PHY, are connected by RJ45 Interface realization network; Wireless access adopts wireless communication module, GPRS or 3G module realizes the connection of network.Wireless communication module is communicated with between AT91RM9200 by the UART interface of support hardware Flow Control, and the AT command set accepting AT91RM9200 by UART starts radio communication and data and transmits.
(5) voice guard 6: when collected information of vehicles is suspect vehicle, microprocessor 1 drives loudspeaker to report to the police.
Claims (3)
1. the campus vehicle information collecting device based on RFID, it is characterized in that: this campus vehicle information collecting device based on RFID comprises microprocessor (1), RFID radio-frequency card reader (2), tours antenna (3), CCD digital camera (8), DSP image processor (7), USB storage, PC main frame (4), microprocessor (1) connects RFID radio-frequency card reader (2) and USB storage, RFID radio-frequency card reader (2) connects tours antenna (3), microprocessor (1) connects PC main frame (4), microprocessor (1) also connects voice guard (6), microprocessor (1) has S3C44B0X chip, RFID radio-frequency card reader (2) has MFRC531 chip, the ALE pin of MFRC531 chip connects high level, A0, A1, A2 corresponding A0, A1, A2 connecing S3C44B0X chip respectively of MFRC531 chip, sheet selects NCS signal to meet the nGCS3 of S3C44B0X chip, and the input RSTPD that resets meets GPF0, CCD digital camera (8) connects license plate image processing DSP chip, and DSP image processor (7) connects microprocessor (1).
2. the campus vehicle information collecting device based on RFID according to claim 1, it is characterized in that: the described campus vehicle information collecting device based on RFID also comprises multiple electronic tag, electronic tag is IC-card (5), each IC-card (5) configures to registered vehicle in the school respectively, IC-card (5) and tours antenna (3) signal transmission each other, IC-card arranges LC series resonant circuit in (5), produces resonance under the electric magnetization that LC series resonant circuit sends at tours antenna (3).
3. the campus vehicle information collecting device based on RFID according to claim 1 and 2, is characterized in that: described DSP image processor (7) adopts TMS320C5416 digital signal processor, and voice guard (6) is loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063080.1U CN205211003U (en) | 2015-12-21 | 2015-12-21 | Campus vehicle information acquisition device based on RFID |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063080.1U CN205211003U (en) | 2015-12-21 | 2015-12-21 | Campus vehicle information acquisition device based on RFID |
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| Publication Number | Publication Date |
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| CN205211003U true CN205211003U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521063080.1U Expired - Fee Related CN205211003U (en) | 2015-12-21 | 2015-12-21 | Campus vehicle information acquisition device based on RFID |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713857A (en) * | 2016-12-15 | 2017-05-24 | 重庆凯泽科技股份有限公司 | Campus security system and method based on intelligent videos |
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- 2015-12-21 CN CN201521063080.1U patent/CN205211003U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713857A (en) * | 2016-12-15 | 2017-05-24 | 重庆凯泽科技股份有限公司 | Campus security system and method based on intelligent videos |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20161221 |