TW201416983A - Radio frequency identification auto-detection system using array antenna - Google Patents

Abstract

There is provided a radio frequency identification auto-detection system using array antenna, which includes a radio frequency identification module, an array accommodation device, an enhanced surface waveguide coaxial cable structure and an extended conductive wire. The array accommodation device has a plurality of receiving spaces. A notch region is formed on the enhanced surface waveguide coaxial cable structure by removing the outer net-shaped conductive layer. The extended conductive wire is mounted near the accommodation device and connected with the outer net-shaped conductive layer. When the current generated by the radio frequency identification module flows through the notch region, magnetic wave leakage is generated and the magnetic wave is transmitted along the outer conductive layer and the extended conductive wire, so that there is electromagnetic field around the receiving spaces. When an object with a radio frequency identification electronic tag is moved into or moved out from the receiving spaces, the object is automatically triggered by the electromagnetic field, so as to transmit information to the radio frequency identification module, to thereby achieve an effective management of automatic detection and reduced manpower cost.

Description

Radio frequency identification automatic detection system using array antenna

The invention relates to an RFID automatic detection system using an array antenna, in particular to use an enhanced surface waveguide coaxial cable structure to generate electromagnetic waves and automatically detect an object having a radio frequency identification electronic tag.

At present, with the increase in the size of warehousing and cloud hosting, the traditional security management system has increased costs due to the need to add more people or increase monitors. However, for example, the valuables inside the safe have been stolen and still occur frequently. The problem of warehouse inventory is that it requires a lot of manpower and material resources. Therefore, the way to improve these problems is urgent and urgently needed.

Ultra high frequency (Ultra high frequency) sensing technology is a long-distance wireless communication technology. Its system is mainly composed of three parts: electronic tag (Tag), reader (Reader) and antenna (Antenna). The tag enters the magnetic field area sensed by the antenna, and the electronic tag is triggered by the wireless signal, that is, the identification signal is transmitted to the reader through the antenna. After the identification information is confirmed, the reader reads the relevant internal memory from the electronic tag. Body information.

The antenna of the UHF wireless RF sensing system has gradually become thinner and lighter under the current technology, and is also used for anti-theft of valuables such as store logistics management, access control, books, documents, medicines, clothing management, jewelry, jewelry, etc. However, the usual method of operation is to have one person hold the RFID reader and read the labels attached to the products one by one, so that the cost and time of manpower are limited. In addition, although some automatic triggering methods have been developed, the range and distance of triggering are too small, and the overall cost is still too high to be practical.

Therefore, there is a need for a radio frequency identification electronic device that is inexpensive and can be automatically triggered to solve conventional technical problems.

The main object of the present invention is to provide an RFID remote detection system using an array antenna, which comprises a radio frequency identification module, an array storage device, a reinforced surface waveguide coaxial cable structure, and a plurality of extension wires. The radio frequency identification module includes a signal processing device and a radio frequency identification transmitting/receiving device, and the signal processing device is electrically connected to the radio frequency identification transmitting/receiving device in a wired/wireless manner, and the radio frequency identification transmitting/receiving device is used for An electric current is generated; the array storage device has a plurality of array accommodating spaces arranged in an array, each of the accommodating spaces for accommodating the object having the radio frequency identification electronic tag.

The enhanced surface waveguide coaxial cable structure is disposed in the array type peripheral device, and comprises a coaxial cable and a matching terminal device, wherein a central conductive layer of the coaxial cable extends outside the array type peripheral device, and Connecting to the radio frequency identification transmitting/receiving device, the coaxial cable has a plurality of notch regions, wherein the notch regions do not have an outer mesh conductive layer, and the matching terminal device and one end of the coaxial cable are electrically conductive with the center The layer is connected to the outer mesh conductive layer, and the outer mesh conductive layer and the central conductive layer are separated by an insulating layer without contacting each other. The extension wires are mounted on a portion of the array storage device and are connected to the outer mesh conductive layer of the coaxial cable, and each of the extension wires is adjacent to one row or column of the accommodation spaces.

When the current generated by the RFID module and transmitted to the central conductive layer of the coaxial cable flows through the gap regions, an electromagnetic wave leakage occurs to form an electromagnetic field, and the electromagnetic wave along the external conductive layer and the like Extending the wire transfer such that the electromagnetic field is transmitted to the vicinity of the accommodating space, and when the object having the radio frequency identification electronic tag is moved in/out from the accommodating space, the electromagnetic field is automatically triggered, and the radio frequency identification tag is Information is sent to the RFID transmitting/receiving device, and the RFID transmitting/receiving device transmits the information in the RFID tag to the signal processing device.

When the array storage device is made of metal, and the storage space has a metal plate to create a shielding effect, an opening is formed in the metal plate, and the extension wire is formed into a branch extension wire and protrudes into the openings. It can overcome the problem of metal shielding effect.

The invention is characterized in that, by enhancing the structure of the surface waveguide coaxial cable, the electromagnetic wave formed by the current leakage wave is extended outward by the outer mesh conductive layer and the extended wire, thereby being applied to a large cabinet and a shelf. The management of the object can be triggered by the electromagnetic field when the object is moved in or out, and the message is transmitted to the signal processing device, thereby achieving automatic management and reducing the labor cost.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

Referring to the first figure, a schematic diagram of an RFID remote detection system using an array antenna according to a first embodiment of the present invention. As shown in the first figure, the RFID automatic detection system 1 using the array antenna according to the first embodiment of the present invention includes a radio frequency identification module 10, a reinforced surface waveguide coaxial cable structure 20, an array storage device 40, and a plurality Extension wires 50. The RFID module 10 includes a signal processing device 11 and a radio frequency identification transmitting/receiving device 13. The signal processing device 11 is a host or a programmable chip, and is electrically connected to the RFID transmitting/receiving device 13 in a wired/wireless manner. The RFID transmitting/receiving device 13 is connected to the enhanced surface waveguide coaxial cable structure 20 and generates a current. The array storage device 40 is a shelf or a cabinet, and has a plurality of array accommodating spaces 41 arranged in an array, each of the accommodating spaces 41 for accommodating an object 60 having a radio frequency identification electronic tag 70. Each of the extension wires 50 is mounted on a portion of the array storage device 40 adjacent to a row or a row of the accommodation spaces 41.

The second A is a schematic diagram of an embodiment of the enhanced surface waveguide coaxial cable structure of the present invention. Refer to the first figure and the second figure A at the same time. The enhanced surface waveguide coaxial cable structure 20 is disposed in the array type peripheral device 40, and is coupled to the RFID transmitting/receiving device 13 and the extension wires 50. The enhanced surface waveguide coaxial cable structure 20 includes a coaxial cable. 21 and a matching terminal device 31, the coaxial cable 21 is formed with a plurality of notch regions 23, in which the outer mesh conductive layer 25 is not provided, and the central conductive layer 27 of the coaxial cable 21 extends. Up to the array receiving device 40, to connect the radio frequency identification transmitting/receiving device 13, the outer mesh conductive layer 25 is connected to the extended wires 50, and the outer mesh conductive layer 25 and the central conductive layer 27 are borrowed They are separated by an insulating layer 29 without being in contact with each other. The matching terminal device 31 is connected to the central conductive layer 27 and the outer mesh conductive layer 25 at one end of the coaxial cable, so that the current is electrically connected, opened or shorted in the coaxial cable 21.

The current generated by the RFID transmitting/receiving device 13 flows along the central conductive layer 27 of the enhanced surface waveguide coaxial cable structure 20, and when flowing through the notch regions 23, electromagnetic wave leakage occurs, thereby generating an electromagnetic field. At the same time, electromagnetic waves are transmitted along the outer conductive layer 25 and the extension wires 50, thereby enhancing the surface waveguide effect and transmitting the externally leaked electromagnetic waves to the vicinity of the accommodation spaces 41. The electromagnetic field has a radius of about 50 to 250 cm, preferably a radius of 150 cm, and when the object 50 having the radio frequency identification electronic tag 60 is moved in/out from the accommodation space 41, the electromagnetic field is automatically triggered, and The information in the radio frequency identification electronic tag 60 is sent to the radio frequency identification transmitting/receiving device 13, and the radio frequency identification transmitting/receiving device 13 transmits the information in the radio frequency identification electronic tag 60 to the signal processing device 11, thereby being able to automatically The state of the object 50 is detected to facilitate overall control.

The second B is a schematic view of another embodiment of the enhanced surface waveguide coaxial cable structure of the present invention. As shown in FIG. 2B, another embodiment of the enhanced surface waveguide coaxial cable structure of the present invention is provided with an insulating tape 33 on the notch regions 23 to protect the structure of the coaxial cable 21.

The third figure is a schematic diagram of an automatic radio frequency identification detection system using an array antenna according to a second embodiment of the present invention. As shown in the third figure, the RFID automatic detection system 2 for applying the array antenna according to the second embodiment of the present invention is similar to the RFID automatic detection system 1 for applying the array antenna of the first embodiment. The accommodating device 40 is made of metal, and has a metal plate 43 outside the accommodating spaces 41. When the accommodating spaces 41 are closed, for example, the safe, according to the manner of the first embodiment, The shielding effect prevents the electromagnetic field from detecting the radio frequency identification electronic tag 70 on the object 60. Therefore, the second embodiment An opening 45 is formed in the wall surface of the accommodating space 41, and the extension wire 50 is formed into the extension wire 55 and protrudes into the opening 45, so that the problem of the metal shielding effect can be overcome.

The invention is characterized in that the electromagnetic wave formed by the current leakage wave is extended by the outer mesh conductive layer and the extended wire by the enhanced surface waveguide coaxial cable structure, and is applied to a large cabinet and a shelf as an object. For the management purposes, when the object is moved in or out, it can be triggered by the electromagnetic field, and the message is transmitted to the signal processing device, thereby achieving automatic management and reducing the labor cost.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any way, and any modifications or alterations to the present invention made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.

1‧‧‧Radio Frequency Identification Automatic Detection System Using Array Antenna

2‧‧‧ Radio Frequency Identification Automatic Detection System Using Array Antenna

10‧‧‧RF module

11‧‧‧Signal processing unit

13‧‧‧RF identification transmitting/receiving device

20‧‧‧Enhanced surface waveguide coaxial cable structure

21‧‧‧ coaxial cable

23‧‧‧ gap area

25‧‧‧ outer mesh conductive layer

27‧‧‧Center conductive layer

29‧‧‧Insulation

31‧‧‧Matching terminal device

33‧‧‧Insulation tape

40‧‧‧Array storage device

41‧‧‧ accommodation space

43‧‧‧Metal plates

45‧‧‧ openings

50‧‧‧Extended wire

55‧‧‧ Extension wires

60‧‧‧ objects

70‧‧‧RF identification electronic label

The first figure is a schematic diagram of an automatic radio frequency identification detection system using an array antenna according to a first embodiment of the present invention.

The second A is a schematic diagram of an embodiment of the enhanced surface waveguide coaxial cable structure of the present invention.

The second B is a schematic view of another embodiment of the enhanced surface waveguide coaxial cable structure of the present invention.

The third figure is a schematic diagram of an automatic radio frequency identification detection system using an array antenna according to a second embodiment of the present invention.

1‧‧‧Radio Frequency Identification Automatic Detection System Using Array Antenna

10‧‧‧RF module

11‧‧‧Signal processing unit

13‧‧‧RF identification transmitting/receiving device

20‧‧‧Enhanced surface waveguide coaxial cable structure

21‧‧‧ coaxial cable

23‧‧‧ gap area

31‧‧‧Matching terminal device

40‧‧‧Array storage device

41‧‧‧ accommodation space

50‧‧‧Extended wire

60‧‧‧ objects

70‧‧‧RF identification electronic label

Claims (7)

An RFID automatic detection system using an array antenna includes: a radio frequency identification module including a signal processing device and a radio frequency identification transmitting/receiving device, and the signal processing device and the radio frequency identification transmitting/receiving device are wired/ Wirelessly electrically connected, the RFID-enabled transmitting/receiving device is configured to generate a current; an array-type storage device having a plurality of array accommodating spaces arranged in an array, each of the accommodating spaces for accommodating a radio frequency identification electronic tag An enhanced surface waveguide coaxial cable structure disposed in the array type peripheral device includes a coaxial cable and a matching terminal device, a central conductive layer of the coaxial cable and the radio frequency identification transmitting/receiving device Connecting, the coaxial cable has a plurality of gap regions, wherein the gap regions do not have an outer mesh conductive layer, and the matching terminal device has one end of the coaxial cable and the central conductive layer and the outer mesh conductive layer Connecting, the outer mesh conductive layer and the central conductive layer are separated by an insulating layer without contacting each other; and a plurality of extensions a wire disposed on a portion of the array of storage devices and connected to the outer mesh conductive layer of the coaxial cable, each of the extension wires being adjacent to a row or a column of the receiving spaces, wherein the RF The current generated by the identification module and transmitted to the central conductive layer of the coaxial cable flows through the gap regions to generate an electromagnetic wave leakage to form an electromagnetic field, and the electromagnetic wave along the outer conductive layer and the electromagnetic wave Extending the wire transfer such that the electromagnetic field is transmitted to the vicinity of the accommodating space, and when the object having the radio frequency identification electronic tag is moved in/out from the accommodating space, the electromagnetic field is automatically triggered, and the radio frequency identification tag is Information is sent to the RFID transmitting/receiving device, and the RFID transmitting/receiving device transmits the information in the RFID tag to the signal processing device. The radio frequency identification automatic detection system using the array antenna as described in claim 1, wherein the electromagnetic field ranges from 50 to 250 cm. The radio frequency identification automatic detection system using the array antenna according to claim 1, wherein the matching terminal device causes the current to be turned on, open or shorted in the coaxial cable. The radio frequency identification automatic detection system using the array antenna as described in claim 1, wherein the signal processing device is a host or a programmable chip. The radio frequency identification automatic detection system using the array antenna described in claim 1 further includes a plurality of insulating tapes for enclosing the gap regions. The radio frequency identification automatic detection system for applying the array antenna according to the first aspect of the invention, wherein the array storage device is made of metal and has a plurality of array accommodation spaces arranged in an array, each of the accommodation spaces having a The metal plate has closed the respective accommodation spaces, and an opening is provided on the wall surface of the accommodation space. The radio frequency identification automatic detection system for applying an array antenna according to claim 6, wherein each of the extension wires comprises a plurality of extension wires extending into the openings.