CN106408729A - Door access automatic identification system and method based on ultrahigh-frequency RFID technology - Google Patents

Abstract

The present invention relates to an access control automatic identification method and system based on ultra-high frequency RFID technology. The identification method includes the following steps: S1: Identify the type of RFID tag, perform radio frequency on the RFID through the electromagnetic wave sent by the RFID antenna, and read the RFID tag According to the acquired identity information, determine whether the RFID tag is consistent with the stored tag information; S2: When the RFID tag recognized by the RFID antenna is consistent with the stored tag information, start the speed measuring device to measure the RFID tag entering the identification range. The speed of the RFID tag is defined as a pedestrian tag or an electric vehicle tag; S3: Start the distance measuring device to measure the distance of the moving RFID tag, and select to open the access control according to the measured distance; S4: Detect whether the RFID tag passes, when the RFID tag After passing, close the gate. This system adopts RFID technology, no need to swipe the card, which reduces the cost of use.

Description

An access control automatic identification system and method based on UHF RFID technology

technical field

The invention relates to the field of RFID tags, in particular to an access control automatic identification system and method based on ultra-high frequency RFID technology.

technical background

RFID (Radio Frequency Identification), radio frequency identification technology, also known as radio frequency identification, is a communication technology that can identify specific targets through radio signals and read and write related data without the need for mechanical or optical contact between the identification system and specific targets . At present, more and more industries are using radio frequency identification technology.

At present, the community mostly adopts the card swiping method for the management of pedestrians and electric vehicles, which requires pedestrians or electric vehicle drivers to swipe the card, and the passages for pedestrians and electric vehicles are generally not wide, which seriously affects the passage of pedestrians and electric vehicles.

In view of the above-mentioned defects, the designers are actively researching and innovating in order to create a new structure based on UHF RFID technology access control automatic identification system and method, so that it has more industrial value.

Contents of the invention

In order to solve the above-mentioned technical problems, the object of the present invention is to provide an access control automatic identification system and method based on UHF RFID technology.

Technical scheme of the present invention is as follows:

A kind of access control automatic identification method based on UHF RFID technology, is characterized in that, comprises the following steps:

S1: Identify the type of RFID tag, radio frequency the RFID through the electromagnetic wave emitted by the RFID antenna, read the identity information of the RFID tag, and determine whether the RFID tag is consistent with the stored tag information according to the obtained identity information;

S2: When the RFID tag recognized by the RFID antenna is consistent with the stored tag information, start the speed measuring device to measure the speed of the RFID tag entering the identification range, and define the RFID tag as a pedestrian tag or an electric vehicle tag;

S3: Start the distance measuring device to measure the distance of the moving RFID tag, and select to open the access control according to the measured distance;

S4: Detect whether the RFID tag passes, and close the access control when the RFID tag passes.

Further, in the step S1, it is determined whether the RFID tag is consistent with the stored tag information according to the obtained identity information, specifically as follows,

a. Activate the internal circuit of the RFID tag through the RFID antenna,

b. The RFID tag transmits a radio frequency signal to the RFID reading and writing module,

c. The RFID reading and writing module sends the read RFID tag information to the controller,

d. The controller calls the RFID tag to store information,

e. Whether the comparison information of the controller is consistent.

Further, the RFID tag is defined as a pedestrian tag or an electric vehicle tag. When the moving speed is 0.8-1.8m/s, the tag is determined to be a pedestrian tag, and when the moving speed is greater than 3m/s, the tag is determined to be an electric vehicle tag.

Further, the selection of opening the access control according to the measured distance is specifically, when the identified tag is a pedestrian tag, select to open the access control at a distance of 1-2m, and when the identified tag is an electric vehicle tag, select to open the access control at a distance of 3-4m.

An automatic access control identification system based on UHF RFID technology, characterized in that it includes an RFID tag to be identified, an RFID antenna, an RFID read-write module, a speed measuring device, a distance measuring device, a controller and a gate motor,

The inside of the RFID tag to be identified is provided with a circuit driven by electromagnetic waves, and label information that can be read through the circuit;

The RFID antenna is used to emit electromagnetic radio frequency signals, and is used to transmit the tag information data and the tag read-write module;

The controller is used to compare the received tag information with the basic information stored inside, and if the comparison information is inconsistent, the operation is interrupted and waits for the next RFID tag entering the identification range; if the comparison information is consistent, the controller first starts the speed measuring device to measure the RFID tag Determine the type of RFID tag, and then start the distance measuring device to measure the distance of the RFID tag. According to the difference in the measured distance, start the door gate motor and open the access control.

Further, the controller includes an EPC reading module, a control module, an initialization module, a storage module and a processor,

The initialization module is used to configure RFID tag information, the EPC reading module is used to read tag information to the RFID antenna, and the processor is used to process the tag information read by the EPC and the configuration file. Compared with the RFID tag information, the storage module is used to store the gate motor startup information corresponding to the measured distance, and the processor is also used to call the gate motor startup information to start the gate motor through the control module Open the gate.

Further, the RFID tag is a tag provided with pedestrian information or electric vehicle information.

Further, the determination of the RFID tag type specifically includes determining that the tag is a pedestrian tag when the moving speed is 0.8-1.8 m/s, and determining that the tag is an electric vehicle tag when the moving speed is greater than 3 m/s.

Further, the selection of starting the gate motor according to the measured distance is specifically, when the identified tag is a pedestrian tag, select to open the access control at a distance of 1-2m, and when the identified tag is an electric vehicle tag, select a distance of 3-4m Open the gate.

Further, it also includes an infrared detection module, which is used to detect whether the access control system passes through, and if passed, sends a command to the processor, and the processor turns off the gate motor through the control module.

By means of the above solution, the present invention has at least the following advantages:

(1) The system can identify whether it is a pedestrian or an electric vehicle that needs to pass, and can open the access control at the best distance for pedestrians or electric vehicles to pass, preventing opening the access control too early or too late;

(2) This system adopts RFID technology, no need to swipe the card, which reduces the cost of use;

(3) The system detects whether the pass is passed by infrared, avoiding the possibility of closing the access control if the pass is not passed.

Description of drawings

Fig. 1, method flowchart of the present invention;

Fig. 2, the schematic diagram of each system connection structure frame of the present invention;

Fig. 3 is a schematic diagram of connection of the controller structure frame of the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Referring to Fig. 1 to Fig. 3, a kind of method based on UHF RFID technology and automatic identification described in a preferred embodiment of the present invention comprises the following steps:

S1: Identify the type of RFID tag, radio frequency the RFID through the electromagnetic wave emitted by the RFID antenna, read the identity information of the RFID tag, and determine whether the RFID tag is consistent with the stored tag information according to the obtained identity information;

S2: When the RFID tag recognized by the RFID antenna is consistent with the stored tag information, start the speed measuring device to measure the speed of the RFID tag entering the identification range, and define the RFID tag as a pedestrian tag or an electric vehicle tag;

S3: Start the distance measuring device to measure the distance of the moving RFID tag, and select to open the access control according to the measured distance;

S4: Detect whether the RFID tag passes, and close the access control when the RFID tag passes.

- In the step S1, determining whether the RFID tag is consistent with the stored tag information according to the acquired identity information is as follows,

a. Activate the internal circuit of the RFID tag through the RFID antenna,

b. The RFID tag transmits a radio frequency signal to the RFID reading and writing module,

c. The RFID reading and writing module sends the read RFID tag information to the controller,

d. The controller calls the RFID tag to store information,

e. Whether the comparison information of the controller is consistent.

-The RFID tag is defined as a pedestrian tag or an electric vehicle tag, when the moving speed is 0.8-1.8m/s, it is determined that the tag is a pedestrian tag, and when the moving speed is greater than 3m/s, it is determined that the tag is an electric vehicle tag.

- Selecting to open the access control according to the measured distance is specifically, when the identified tag is a pedestrian tag, select to open the access control at a distance of 1-2m, and select to open the access control at a distance of 3-4m when the identified tag is an electric vehicle tag.

An automatic access control identification system based on UHF RFID technology, including an RFID tag to be identified, an RFID antenna, an RFID read-write module, a speed measuring device, a distance measuring device, a controller and a gate motor,

The inside of the RFID tag to be identified is provided with a circuit driven by electromagnetic waves, and label information that can be read through the circuit;

The RFID antenna is used to emit electromagnetic radio frequency signals, and is used to transmit the tag information data and the tag read-write module;

The controller is used to compare the received tag information with the basic information stored inside, and if the comparison information is inconsistent, the operation is interrupted and waits for the next RFID tag entering the identification range; if the comparison information is consistent, the controller first starts the speed measuring device to measure the RFID tag Determine the type of RFID tag, and then start the distance measuring device to measure the distance of the RFID tag. According to the difference in the measured distance, start the door gate motor and open the access control.

- the controller includes an EPC reading module, a control module, an initialization module, a storage module and a processor,

The initialization module is used to configure RFID tag information, the EPC reading module is used to read tag information to the RFID antenna, and the processor is used to process the tag information read by the EPC and the configuration file. Compared with the RFID tag information, the storage module is used to store the gate motor startup information corresponding to the measured distance, and the processor is also used to call the gate motor startup information to start the gate motor through the control module Open the gate.

- The RFID tag is a tag provided with pedestrian information or electric vehicle information.

- The determination of the type of the RFID tag specifically includes determining that the tag is a pedestrian tag when the moving speed is 0.8-1.8 m/s, and determining that the tag is an electric vehicle tag when the moving speed is greater than 3 m/s.

-The selection of starting the door gate motor according to the different measured distances is specifically, when the identified tag is a pedestrian tag, select to open the access control at a distance of 1-2m; when the identified tag is an electric vehicle tag, select to open the access control at a distance of 3-4m .

- It also includes an infrared detection module, which is used to detect whether the access control system passes through, and if passed, sends a command to the processor, and the processor closes the gate motor through the control module.

The present invention has at least the following advantages:

(1) The system can identify whether it is a pedestrian or an electric vehicle that needs to pass, and can open the access control at the best distance for pedestrians or electric vehicles to pass, preventing opening the access control too early or too late;

(2) This system adopts RFID technology, no need to swipe the card, which reduces the cost of use;

(3) The system detects whether the pass is passed by infrared, avoiding the possibility of closing the access control if the pass is not passed.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the technical principle of the present invention. and modifications, these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. a kind of access control automatic identification method based on UHF RFID technology, is characterized in that, comprises the following steps: S1: Identify the type of RFID tag, radio frequency the RFID through the electromagnetic wave emitted by the RFID antenna, read the identity information of the RFID tag, and determine whether the RFID tag is consistent with the stored tag information according to the obtained identity information; S2: When the RFID tag recognized by the RFID antenna is consistent with the stored tag information, start the speed measuring device to measure the speed of the RFID tag entering the identification range, and define the RFID tag as a pedestrian tag or an electric vehicle tag; S3: Start the distance measuring device to measure the distance of the moving RFID tag, and select to open the access control according to the measured distance; S4: Detect whether the RFID tag passes, and close the access control when the RFID tag passes. 2. the access control automatic identification method based on UHF RFID technology according to claim 1, is characterized in that: in described step S1, determines whether the label information of RFID label and storage is consistent according to the identity information that obtains and is specifically as follows, a. Activate the internal circuit of the RFID tag through the RFID antenna; b. The RFID tag transmits a radio frequency signal to the RFID reading and writing module; c. The RFID reading and writing module sends the read RFID tag information to the controller; d. The controller calls the RFID tag to store information; e. Whether the comparison information of the controller is consistent. 3. The access control automatic identification method based on UHF RFID technology according to claim 2, characterized in that: the defined RFID tag is a pedestrian tag or an electric vehicle tag, determined when the moving speed is 0.8-1.8m/s The tag is a pedestrian tag, and when the moving speed is greater than 3m/s, it is determined that the tag is an electric vehicle tag. 4. The access control automatic identification method based on UHF RFID technology according to claim 2, characterized in that: the selection of opening the access control according to the measured distance is specifically, when the identified tag is a pedestrian tag, the distance is 1-2m Select to open the access control. When the recognized tag is an electric vehicle tag, select to open the access control at a distance of 3-4m. 5. An automatic identification system for access control based on UHF RFID technology, characterized in that it includes an RFID tag to be identified, an RFID antenna, an RFID read-write module, a speed measuring device, a distance measuring device, a controller and a gate motor, The inside of the RFID tag to be identified is provided with a circuit driven by electromagnetic waves, and label information that can be read through the circuit; The RFID antenna is used to emit electromagnetic radio frequency signals, and is used to transmit the tag information data and the tag read-write module; The controller is used to compare the received tag information with the basic information stored inside, and if the comparison information is inconsistent, the operation is interrupted and waits for the next RFID tag entering the identification range; if the comparison information is consistent, the controller first starts the speed measuring device to measure the RFID tag Determine the type of RFID tag, and then start the distance measuring device to measure the distance of the RFID tag. According to the difference in the measured distance, start the door gate motor and open the access control. 6. a kind of access control automatic identification system based on UHF RFID technology according to claim 5, is characterized in that: described controller comprises EPC reading module, control module, initialization module, storage module and processor, The initialization module is used to configure RFID tag information, the EPC reading module is used to read tag information to the RFID antenna, and the processor is used to process the tag information read by the EPC and the configuration file. Compared with the RFID tag information, the storage module is used to store the gate motor startup information corresponding to the measured distance, and the processor is also used to call the gate motor startup information to start the gate motor through the control module Open the gate. 7. An automatic identification system for access control based on UHF RFID technology according to claim 6, wherein the RFID tag is a tag provided with pedestrian information or electric vehicle information. 8. A kind of access control automatic identification system based on UHF RFID technology according to claim 5, characterized in that: said determining the type of RFID tag is specifically, when the moving speed is 0.8-1.8m/s, it is determined that the tag is Pedestrian tags, when the moving speed is greater than 3m/s, it is determined that the tag is an electric vehicle tag. 9. The access control automatic identification system based on UHF RFID technology according to claim 5, characterized in that: the different selections to start the door gate motor according to the measured distance are specifically, when the identified label is a pedestrian label, the distance Choose to open the access control at 1-2m, and select to open the access control at a distance of 3-4m when the recognized tag is an electric vehicle tag. 10. The automatic identification system for access control based on UHF RFID technology according to claim 5, characterized in that: it also includes an infrared detection module, which is used to detect whether the access control system passes through, and if it passes through, an order is sent to the described processing device, the processor closes the gate motor through the control module.