WO2021007958A1

WO2021007958A1 - Rfid tunnel machine using multi-beam antennas

Info

Publication number: WO2021007958A1
Application number: PCT/CN2019/109292
Authority: WO
Inventors: 赵鹏飞; 王伟; 石磊; 冷翀
Original assignee: 江苏东大集成电路系统工程技术有限公司
Priority date: 2019-07-17
Filing date: 2019-09-30
Publication date: 2021-01-21
Also published as: CN210091207U

Abstract

Disclosed is an RFID tunnel machine using multi-beam antennas, comprising a box-type tunnel, a control box, and a conveyer belt. A controller, an RFID reader-writer, a power supply module, and a communication circuit are arranged in the control box; the conveyer belt horizontally passes through the box-type tunnel; position sensors are arranged on the upper edge of a vertical inner sidewall of the box-type tunnel at intervals; a multi-beam RFID antenna is arranged on each of the top inner wall, two vertical inner walls, and the bottom inner wall of the box-type tunnel. According to the RFID tunnel machine, four multi-beam RFID antennas are used for reading an RFID tag of an object conveyed on the conveyer belt, thereby effectively reducing the possibility of causing a reading blind area and increasing the success rate of RFID tag reading; the position of the object on the conveyer belt can be obtained in real time by using position sensors, so that the controller controls, by means of the RFID reader-writer, the multi-beam RFID antenna to start a beam at a specific angle to transmit and receive a radio frequency signal, thereby reducing energy leakage and reducing the crosstalk rate.

Description

An RFID channel machine using multi-beam antenna

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on July 17, 2019, the application number is 201921121191.1, and the invention title is "An RFID channel machine using a multi-beam antenna", the entire content of which is incorporated by reference In this application.

Technical field

The utility model relates to a channel machine, in particular to an RFID channel machine adopting a multi-beam antenna.

Background technique

RFID (Radio Frequency Identification) technology, as a non-contact wireless identification technology, can quickly identify items without contact, and can identify multiple items at the same time. It has been used in unmanned retail, logistics sorting, asset management and other fields. However, when the transported items on the aisle machine enter the aisle machine, the side where the RFID electronic tag is attached is not in the specified direction. If a single-oriented RFID antenna is used, it is easy to miss the reading problem, and the aisle machine runs continuously during transportation. Yes, the RFID electronic tag reading process is actually completed in a moving state, and the problem of missing reading is relatively easy to occur. Therefore, it is necessary to design an RFID channel machine that uses a multi-beam antenna, which can read the RFID electronic tags attached to transport items, and has good reading reliability.

Utility model content

The purpose of the utility model is to provide an RFID channel machine using a multi-beam antenna, which can read the RFID electronic tags attached to transport items, and has better reading reliability.

Technical solution: The RFID channel machine using multi-beam antennas of this utility model includes a frame channel, a control box and a conveyor belt; the control box is installed on the frame channel, and a controller and RFID reader are arranged in the control box. Writer, power module and communication circuit; indicator lights are provided on the outside of the control box; the conveyor belt horizontally penetrates the frame channel; the vertical inner side wall of the frame channel is provided with position sensors for detecting goods along the conveyor belt interval, And the installation position of the position sensor is higher than the upper level of the conveyor belt; a multi-beam RFID antenna is provided on the top inner wall, two vertical inner walls and the bottom inner wall of the frame channel; the controller communicates with the RFID reader and The circuit, the indicator light and each position sensor are electrically connected; the RFID reader is electrically connected to the four multi-beam RFID antennas, which are used to control the reception or transmission of radio frequency signals on the four multi-beam RFID antennas; the power modules are respectively the controller , RFID reader, communication circuit, indicator light and various position sensors supply power.

Further, the setting interval of each position sensor is 10-15 cm.

Further, the conveyor belt is installed horizontally through the fixing brackets at both ends, and the conveyor belt is driven by a drive motor; a motor drive circuit electrically connected to the controller is provided in the control box; the motor drive circuit is electrically connected to the drive motor, In accordance with the control signal of the controller, the drive motor is rotated and driven.

Further, a supporting foot is provided at the four top corners of the lower side of the frame channel.

Further, the installation height of the two multi-beam RFID antennas on the two vertical inner walls of the frame channel is higher than the height of the upper layer of the conveyor belt.

Further, the height difference between the installation position of the position sensor and the upper layer of the conveyor belt is 2-4 cm.

Further, an auxiliary antenna mechanism is also installed in the frame channel; the auxiliary antenna mechanism includes a negative pressure suction cup, an insertion sleeve, an insertion rod, a positioning pin and an auxiliary multi-beam RFID antenna; the negative pressure suction cup is used for suction installation On the inner wall of the frame channel; a sleeve mounting plate is provided on the negative pressure suction cup, and the insert sleeve is vertically installed on the sleeve mounting plate; the pipe wall of the insert sleeve is provided with positioning holes at intervals along its axial direction ; One end of the insertion rod is inserted in the insertion sleeve, and a pin hole is provided on the insertion end; the other end of the insertion rod is hingedly mounted on the back of the auxiliary multi-beam RFID antenna through a hinge seat; the end of the positioning pin The part penetrates the positioning hole and is inserted into the pin hole; the RFID reader is electrically connected with the auxiliary multi-beam RFID antenna, and is used for receiving or transmitting radio frequency signals of the auxiliary multi-beam RFID antenna.

Further, the number of position sensors is greater than or equal to the number of beams of the multi-beam RFID antenna.

Further, the communication circuit is a network communication circuit and a serial communication circuit.

Compared with the prior art, the utility model has the beneficial effect of using four multi-beam RFID antennas to be respectively arranged on the upper, left, right and lower sides of the conveyor belt, so as to read the RFID tags of the goods transported on the conveyor belt. It effectively reduces the possibility of reading blind areas and enhances the success rate of RFID tag reading; the position sensor can be used to obtain the position of the item on the conveyor belt in real time, so that the controller can control the multi-beam RFID antenna through the RFID reader Which angle of beam is turned on to transmit and receive radio frequency signals, reduce energy leakage and reduce the rate of cross-reading; the use of communication circuits can realize timely communication between the channel machine and the host computer, and upload the collected RFID information to the host computer for processing and storage ; The indicator light can flash when the RFID reader fails to read the RFID tag, so as to remind the on-site personnel to conduct manual inspection to confirm whether the RFID tag is damaged.

Description of the drawings

Figure 1 is a schematic cross-sectional view of the overall structure of the utility model;

Figure 2 is a schematic diagram of the circuit structure of the utility model.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

Example 1:

As shown in Figures 1 and 2, the RFID channel machine using a multi-beam antenna disclosed in the present invention includes: a frame channel 1, a control box 2 and a conveyor belt 5; the control box 2 is installed on the frame channel 1 and is controlling The box 2 is provided with a controller, an RFID reader, a power supply module, and a communication circuit; an indicator light 3 is provided on the outside of the control box 2; the conveyor belt 5 horizontally penetrates the frame channel 1; on the vertical inner side of the frame channel 1 The wall is provided with position sensors 7 for detecting goods 10 at intervals along the conveyor belt 5, and the installation position of the position sensors 7 is higher than the upper height of the conveyor belt 5; on the top inner wall, two vertical inner walls and the bottom of the frame channel 1 A multi-beam RFID antenna 4 is provided on the inner wall; the controller is electrically connected to the RFID reader, communication circuit, indicator light 3 and each position sensor 7; the RFID reader is electrically connected to the four multi-beam RFID antennas 4, The four multi-beam RFID antennas 4 are used to receive or transmit radio frequency signals respectively; the power module provides power for the controller, RFID reader, communication circuit, indicator light 3 and each position sensor 7 respectively.

Four multi-beam RFID antennas 4 are respectively arranged above, left, right, and below the conveyor belt 5 to read the RFID tags 11 of the items 10 on the conveyor belt 5, effectively reducing the possibility of reading blind spots This enhances the success rate of reading the RFID tag 11; the position sensor 7 can be used to obtain the position of the article 10 on the conveyor belt 5 in real time, so that the controller can control which angle of the multi-beam RFID antenna 4 is turned on through the RFID reader The transmission and reception of radio frequency signals can reduce energy leakage and reduce the rate of cross-reading; the communication circuit can realize the timely communication between the channel machine and the upper computer, and upload the collected RFID information to the upper computer for processing and storage; the indicator 3 can be used When the RFID reader fails to read the RFID tag 11 successfully, it flashes, so as to remind on-site personnel to perform manual inspection to confirm whether the RFID tag 11 is damaged.

Further, the arrangement interval of each position sensor 7 is 10-15 cm, preferably 15 cm. Setting the interval of the position sensor 7 within 10-15 cm can make the RFID tags 11 of multiple articles 10 read on the conveyor belt 5 at the same time, so as to satisfy the pipeline conveying of the tunnel machine.

Further, the conveyor belt 5 is installed horizontally through the fixing brackets 6 at both ends, and the conveyor belt 5 is driven by the drive motor 9; a motor drive circuit electrically connected to the controller is provided in the control box 2; the motor drive circuit and the drive The motor 9 is electrically connected and used for rotating the driving motor 9 according to the control signal of the controller. The controller is used to control the drive motor 9 to rotate and drive through the motor drive circuit control, so that the conveyor belt 5 can be stopped in time when the indicator light 3 is unsuccessfully read, so as to facilitate the inspection by the on-site personnel.

Furthermore, a supporting foot 8 is provided at the four top corners of the lower side of the frame channel 1. The four supporting feet 8 can be used to support the frame channel 1 at the bottom.

Further, the installation height of the two multi-beam RFID antennas 4 on the two vertical inner walls of the frame channel 1 is higher than the height of the upper layer of the conveyor belt 5. The two multi-beam RFID antennas 4 on the vertical inner wall are set higher than the conveyor belt 5 to ensure the reading success rate of the two multi-beam RFID antennas 4 on the side.

Further, the height difference between the installation position of the position sensor 7 and the upper layer of the conveyor belt 5 is 2-4 cm, preferably 3 cm. With a height setting of 2-4 cm, it can ensure that small items on the conveyor belt 5 can also be sensed.

Furthermore, an auxiliary antenna mechanism is installed in the frame channel 1; the auxiliary antenna mechanism includes a negative pressure suction cup 12, an insertion sleeve 14, an insertion rod 17, a positioning pin 16 and an auxiliary multi-beam RFID antenna 19; The suction cup 12 is used for suction installation on the inner wall of the frame channel 1; a sleeve mounting plate 13 is provided on the negative pressure suction cup 12, and the insertion sleeve 14 is vertically installed on the sleeve installation plate 13; the insertion sleeve 14 The wall of the tube is provided with positioning holes 15 at intervals along its axial direction; one end of the insertion rod 17 is inserted into the insertion sleeve 14, and the insertion end is provided with a pin hole; the other end of the insertion rod 17 passes The hinge base 18 is hingedly mounted on the back of the auxiliary multi-beam RFID antenna 19; the end of the positioning pin 16 penetrates the positioning hole 15 and then is inserted into the pin hole; the RFID reader is electrically connected to the auxiliary multi-beam RFID antenna 19 for alignment The auxiliary multi-beam RFID antenna 19 performs radio frequency signal reception or transmission control. The auxiliary antenna mechanism can be used to read some RFID tags 11 pasted to irregular positions. The installation position and the angle of the auxiliary multi-beam RFID antenna 19 can be adjusted through the negative pressure suction cup 12. The cooperation of the mounting rod 17, the positioning pin 16 and the hinge base 18 can realize the adjustment of the position and angle of the auxiliary multi-beam RFID antenna 19, and meet the read and write requirements of the RFID tag 11 in an unconventional position, for example, the RFID tag 11 is attached to the article 10 There is a certain bend at the connection between the vertical surface and the top surface. At this time, it may not be read through the multi-beam RFID antenna 4 on the top or side.

Further, the number of position sensors 7 is greater than or equal to the number of beams of the multi-beam RFID antenna 4. Setting the number of position sensors 7 to be greater than or equal to the number of beams of the multi-beam RFID antenna 4 can activate beams of corresponding angles for reading when the corresponding position sensor 7 detects the object 10.

Further, the communication circuit is a network communication circuit and a serial communication circuit. The setting of network communication circuit and serial communication circuit can meet the needs of remote network transmission and on-site serial transmission; network communication circuit is composed of network port and MAC/PHY chip, serial communication circuit is composed of MAX232 chip and serial port head.

In the RFID channel machine using a multi-beam antenna disclosed by the utility model, the controller adopts an existing single-chip control module, such as 51 single-chip; the multi-beam RFID antenna 4 and the auxiliary multi-beam RFID antenna 19 both adopt the existing multi-beam The antenna can realize the selection and control of the beam under the control of the corresponding RFID reader; the position sensor 7 adopts the existing photoelectric position sensor or the raster type position sensor; the indicator 3 adopts the existing LED indicator; the driving motor 9 adopts the current For some stepper motors, the motor drive circuit uses the existing stepper motor drive circuit.

When the RFID channel machine adopting the multi-beam antenna disclosed by the utility model is working, the controller realizes the operation of the driving motor 9 through the motor drive circuit, the conveyor belt 5 transports the article 10 into the frame channel 1, and the position sensor 7 detects the article 10 When the time, the controller controls the RFID reader to work, starts the beam at the corresponding angle to aim at the article 10, thereby reading the RFID tag 11 on the article 10; the controller transmits the read information to the host computer or server through the communication circuit .

As mentioned above, although the present utility model has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation on the present utility model itself. Various changes in form and details can be made without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

An RFID channel machine adopting a multi-beam antenna, which is characterized in that it comprises a frame channel (1), a control box (2) and a conveyor belt (5); the control box (2) is installed on the frame channel (1), And the control box (2) is provided with a controller, RFID reader, power module and communication circuit; on the outside of the control box (2) is provided with an indicator light (3); the conveyor belt (5) runs horizontally through the frame channel (1); On the vertical inner side wall of the frame channel (1), a position sensor (7) for detecting the goods (10) is arranged at intervals along the conveyor belt (5), and the installation position of the position sensor (7) is higher than The height of the upper layer of the conveyor belt (5); a multi-beam RFID antenna (4) is provided on the top inner wall, two vertical inner walls, and the bottom inner wall of the frame channel (1); the controller and the RFID reader, The communication circuit, the indicator light (3) and each position sensor (7) are electrically connected; the RFID reader is electrically connected to the four multi-beam RFID antennas (4), and is used to perform radio frequency on the four multi-beam RFID antennas (4). Signal receiving or transmitting control; the power module separately supplies power for the controller, RFID reader, communication circuit, indicator light (3) and various position sensors (7).
The RFID channel machine using a multi-beam antenna according to claim 1, characterized in that the setting interval of each position sensor (7) is 10-15 cm.
The RFID channel machine using multi-beam antennas according to claim 1, characterized in that: the conveyor belt (5) is installed horizontally through the fixed brackets (6) at both ends, and the conveyor belt (5) is driven by the drive motor (9). Drive; a motor drive circuit electrically connected to the controller is provided in the control box (2); the motor drive circuit is electrically connected to the drive motor (9) for rotating the drive motor (9) according to the control signal of the controller drive.
The RFID channel machine using a multi-beam antenna according to claim 1, characterized in that: a supporting foot (8) is provided at the four top corners of the lower side of the frame channel (1).
The RFID channel machine using multi-beam antennas according to claim 1, characterized in that: the two multi-beam RFID antennas (4) located on the two vertical inner walls of the frame channel (1) are set higher than the conveyor belt. (5) The height of the upper floor.
The RFID channel machine using a multi-beam antenna according to claim 1, wherein the height difference between the installation position of the position sensor (7) and the upper layer of the conveyor belt (5) is 2-4 cm.
The RFID channel machine using a multi-beam antenna according to claim 1, characterized in that: an auxiliary antenna mechanism is also installed in the frame channel (1); the auxiliary antenna mechanism includes a negative pressure suction cup (12) and a plug-in sleeve The tube (14), the inserting rod (17), the positioning pin (16) and the auxiliary multi-beam RFID antenna (19); the negative pressure suction cup (12) is used for adsorption and installation on the inner wall of the frame channel (1); The pressure suction cup (12) is provided with a casing mounting plate (13), and the inserting casing (14) is vertically installed on the casing mounting plate (13); on the pipe wall of the inserting casing (14) along its axis Positioning holes (15) are provided at intervals; one end of the insertion rod (17) is inserted into the insertion sleeve (14), and a pin hole is provided on the insertion end; the other end of the insertion rod (17) It is hingedly mounted on the back of the auxiliary multi-beam RFID antenna (19) through the hinge base (18); the end of the positioning pin (16) penetrates the positioning hole (15) and then is inserted into the pin hole; RFID reader and auxiliary multi-beam The RFID antenna (19) is electrically connected and used for receiving or transmitting radio frequency signals to the auxiliary multi-beam RFID antenna (19).
The RFID channel machine using a multi-beam antenna according to claim 1, wherein the number of position sensors (7) is greater than or equal to the number of beams of the multi-beam RFID antenna (4).
The RFID channel machine using a multi-beam antenna according to claim 1, wherein the communication circuit is a network communication circuit and a serial communication circuit.