CN209182853U - RFID read-write control device - Google Patents

Abstract

The utility model discloses a kind of RFID read-write control device.The device includes RFID reader, interface module, PC link block, message processing module, triggering and micro-control output module and display module；RFID reader is transmitted to message processing module after RFID tag transmitting or reflected radio-frequency carrier signal for receiving, and RFID tag is onboard；Message processing module is connect with triggering and micro-control output module, it is connect by PC link block with PC machine, message processing module is used to execute built-in vehicle priority pass algorithm, judges whether to give vehicle priority pass, operation result is finally transmitted to triggering and micro-control output module；Triggering connects display module and traffic lights with micro-control output module, for exporting control signal, and the real-time condition of displaing lamp on the display module to traffic lights.The device can allow specific vehicle priority pass, make road vehicle traffic administration more intelligent by controlling traffic lights.

Description

RFID read-write control device

Technical field

The utility model relates to control technology field, specifically a kind of RFID read-write control for being mainly used for managing vehicle pass-through Device processed.

Background technique

RFID technique, also known as radio frequency identification or radio frequency identification are a kind of communication technologys, can be known by radio signals Other specific objective simultaneously reads and writes related data, without establishing mechanical or optical contact between identifying system and specific objective.Wirelessly The signal of electricity is the electromagnetic field by being tuned into radio frequency, and data are sent out from the label being attached on article, with Automatic identification and the tracking article.Certain labels can be obtained by energy from the electromagnetic field that identifier issues in identification, and Battery is not needed；Also there is label itself to possess power supply, and can actively issue radio wave and (be tuned into the electromagnetism of radio frequency ).Label contains the information of Electronic saving, can identify within several meters.Unlike bar code, RF tag is not required to It is within identifier sight, can also be embedded in and be tracked within object.Currently, using RFID technique as the electronic license plate of core Gradually promoted the use of.How RFID technique to be applied among the current management of road vehicle, is a current research Hot spot.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of RFID read-write control devices, can be handed over by control Ventilating signal lamp, allows specific vehicle priority pass, makes road vehicle traffic administration more intelligent.

In order to solve the above technical problems, the utility model uses following technical scheme:

A kind of RFID read-write control device, including RFID reader, interface module, PC link block, message processing module, Triggering and micro-control output module and display module, the RFID reader includes antenna, radio-frequency module and module for reading and writing, antenna Radio-frequency carrier signal for transmitting and receiving, radio-frequency module should by antenna transmitting after being used to generate and amplify radio-frequency carrier signal Signal, radio-frequency module be also used to by antenna it is received from RFID tag transmitting or reflected radio-frequency carrier signal demodulation After be transmitted to module for reading and writing, RFID tag, which is set on vehicle and includes at least in the label substance information that it is carried, vehicle Information, module for reading and writing obtains information in label after being used to receive and decode the signal of radio-frequency module transmission, or mark will be written Radio-frequency module completion is passed to after the information coding of label and writes tag operational, and module for reading and writing is also used to will be in label by interface module Hold information and is transmitted to message processing module；The message processing module is connect with triggering and micro-control output module, also passes through PC connection Module is connect with PC machine, vehicle priority pass algorithm built in message processing module, and message processing module is for receiving in label After the signal for holding information, vehicle priority pass algorithm is executed to judge and determine whether to give priority pass, finally by operation knot Fruit is transmitted to triggering and micro-control output module；The triggering connects display module and traffic lights with micro-control output module, touches Hair and micro-control output module are used to export control signal to traffic lights according to the operation result of message processing module, and aobvious Show the real-time condition that traffic lights are shown in module.

As a further improvement of the above technical scheme:

The radio-frequency module includes radio-frequency oscillator, rf processor and radio frequency receiver；What radio-frequency oscillator generated penetrates Frequency carrier signal amplified by rf processor after by antenna emit, radio frequency receiver be used for receive by antenna send by RFID tag transmitting or reflected radio-frequency carrier signal, after radio-frequency module demodulates the radio-frequency carrier signal received It is transmitted to module for reading and writing.

The module for reading and writing includes that amplifier, decoding and error correction circuit, microprocessor, clock circuit, memory, I/O connect Mouth and power supply, microprocessor are separately connected decoding and error correction circuit, clock circuit, memory and I/O interface, the radio frequency mould The signal that block sends over successively by amplifier, decoding and correction module processing after storage into memory, I/O interface with connect The connection of mouth mold block.

Preferably, the interface module uses RS-485 serial bus interface；The message processing module uses LPC2132 Chip is as processing unit；The triggering and micro-control output module are used as using AT89C52 single-chip microcontroller controls chip；The PC connects SP3232 serial ports conversion chip is used inside connection module；The display module is light-emitting diode display.

The beneficial effects of the utility model are:

The RFID reader of the utility model RFID read-write control device is used to obtain the information of passing vehicle, information of vehicles By judging whether vehicle has right-of-way after message processing module calculation process, so that bus, ambulance, fire fighting truck etc. Vehicle obtains right-of-way, then controls traffic lights by triggering and micro-control output module, allows and possess right-of-way Vehicle priority pass so that road vehicle traffic administration is more intelligent.

Detailed description of the invention

Fig. 1 is the connection schematic diagram of the preferred embodiment in the utility model.

Figure label are as follows: 1, interface module；2, RFID reader；21, antenna；22, radio-frequency module；23, module for reading and writing；3, PC link block；4, message processing module；5, triggering and micro-control output module；6, traffic lights；7, display module.

Specific embodiment

The utility model is illustrated with reference to the accompanying drawing, the specific embodiments described herein be merely to illustrate and It explains the utility model, is not used to limit the utility model, under the premise of not departing from the spirit of the design of the utility model, ability The various changes and improvements that domain those of ordinary skill makes the technical solution of the utility model should all fall into the utility model In protection scope.

As shown in Figure 1, the RFID read-write control device of the present embodiment, including RFID reader 2, interface module 1, PC connection Module 3, message processing module 4, triggering and micro-control output module 5 and display module 7, RFID reader 2 include antenna 21, penetrate Frequency module 22 and module for reading and writing 23, radio-frequency carrier signal, radio-frequency module 22 are used to generate and put antenna 21 for transmitting and receiving The signal is emitted by antenna 21 after big radio-frequency carrier signal, radio-frequency module 22 is also used to antenna 21 is received from radio frequency identification It is transmitted to module for reading and writing 23 after label transmitting or the demodulation of reflected radio-frequency carrier signal, RFID tag is set on vehicle And including at least there is information of vehicles in the label substance information of its carrying, module for reading and writing 23 is for receiving and decoding radio-frequency module 22 Information in label is obtained after the signal of transmission, or will be written after the information coding of label and be passed to the completion of radio-frequency module 22 and write Tag operational, module for reading and writing 23 are also used to that label substance information is transmitted to message processing module 4 by interface module 1；At information Reason module 4 is connect with triggering and micro-control output module 5, is also connect by PC link block 3 with PC machine, in message processing module 4 Vehicle priority pass algorithm is set, message processing module 4 is used for after the signal for receiving label substance information, is executed vehicle and is preferentially led to Operation result is finally transmitted to triggering and micro-control output module 5 to judge and determine whether to give priority pass by row algorithm；Touching Hair and micro-control output module 5 connect display module 7 and traffic lights 6, and triggering and micro-control output module 5 are used at according to information The operation result for managing module 4 exports control signal to traffic lights 6, and the reality of traffic lights 6 is shown on display module 7 When situation.

Wherein, the radio-frequency module 22 includes radio-frequency oscillator, rf processor and radio frequency receiver；Radio-frequency oscillator produces Raw radio-frequency carrier signal is emitted after being amplified by rf processor by antenna 21, and radio frequency receiver is passed for receiving by antenna 21 Bring by RFID tag transmitting or reflected radio-frequency carrier signal, radio-frequency module 22 by the radio frequency received carry Module for reading and writing 23 is transmitted to after the demodulation of wave signal.

Wherein, the module for reading and writing 23 includes amplifier, decoding and error correction circuit, microprocessor, clock circuit, storage Device, I/O interface and power supply, microprocessor are separately connected decoding and error correction circuit, clock circuit, memory and I/O interface, penetrate Successively into memory, I/O connects the signal that frequency module 22 sends over for storage after the processing of amplifier, decoding and correction module Mouth is connect with interface module 1.

Wherein, the interface module 1 uses RS-485 serial bus interface.The message processing module 4 uses LPC2132 Chip is as processing unit.The triggering and micro-control output module 5 are used as using AT89C52 single-chip microcontroller controls chip.The PC SP3232 serial ports conversion chip is used inside link block 3.The display module 7 is light-emitting diode display.

Claims (5)

1.RFID read-write control device, including RFID reader (2), interface module (1), PC link block (3), information processing mould Block (4), triggering and micro-control output module (5) and display module (7), it is characterised in that: the RFID reader (2) includes day Line (21), radio-frequency module (22) and module for reading and writing (23), antenna (21) radio-frequency carrier signal for transmitting and receiving, radio-frequency module (22) emit the signal by antenna (21) after radio-frequency carrier signal for generating and amplifying, radio-frequency module (22) is also used to day Line (21) is received to be transmitted to module for reading and writing (23) after RFID tag transmitting or the demodulation of reflected radio-frequency carrier signal, RFID tag, which is set on vehicle and includes at least in the label substance information that it is carried, information of vehicles, module for reading and writing (23) information in label is obtained after the signal for receiving and decoding radio-frequency module (22) transmission, or the letter of label will be written It passes to radio-frequency module (22) after breath coding to complete to write tag operational, module for reading and writing (23) is also used to will by interface module (1) Label substance information is transmitted to message processing module (4)；The message processing module (4) and triggering and micro-control output module (5) are even It connects, is also connect by PC link block (3) with PC machine, vehicle priority pass algorithm, information processing built in message processing module (4) Module (4) be used for after the signal for receiving label substance information, execute vehicle priority pass algorithm with judge and determine whether to Priority pass is given, operation result is finally transmitted to triggering and micro-control output module (5)；The triggering and micro-control output module (5) display module (7) and traffic lights (6) are connected, triggering and micro-control output module (5) are used for according to message processing module (4) operation result exports control signal to traffic lights (6), and traffic lights (6) are shown on display module (7) Real-time condition.

2. RFID read-write control device according to claim 1, it is characterised in that: the radio-frequency module (22) includes radio frequency Oscillator, rf processor and radio frequency receiver；After the radio-frequency carrier signal that radio-frequency oscillator generates is amplified by rf processor By antenna (21) emit, radio frequency receiver be used for receives by antenna (21) send by RFID tag transmitting or instead It is emitted back towards the radio-frequency carrier signal come, radio-frequency module (22) is transmitted to module for reading and writing after demodulating the radio-frequency carrier signal received (23)。

3. RFID read-write control device according to claim 1, it is characterised in that: the module for reading and writing (23) includes amplification Device, decoding and error correction circuit, microprocessor, clock circuit, memory, I/O interface and power supply, microprocessor are separately connected solution Code and error correction circuit, clock circuit, memory and I/O interface, the signal that the radio-frequency module (22) sends over successively pass through Into memory, I/O interface is connect with interface module (1) for storage after amplifier, decoding and correction module processing.

4. RFID read-write control device according to claim 1, it is characterised in that: the interface module (1) uses RS- 485 serial bus interfaces；The message processing module (4) is using LPC2132 chip as processing unit；The triggering and micro-control Output module (5) is using AT89C52 single-chip microcontroller as control chip；SP3232 serial ports is used inside the PC link block (3) Conversion chip.

5. RFID read-write control device according to claim 1, it is characterised in that: the display module (7) is that LED is shown Device.