WO2015115752A1 - Integrated dual-band rfid system for smart operation management - Google Patents

Integrated dual-band rfid system for smart operation management Download PDF

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Publication number
WO2015115752A1
WO2015115752A1 PCT/KR2015/000704 KR2015000704W WO2015115752A1 WO 2015115752 A1 WO2015115752 A1 WO 2015115752A1 KR 2015000704 W KR2015000704 W KR 2015000704W WO 2015115752 A1 WO2015115752 A1 WO 2015115752A1
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WIPO (PCT)
Prior art keywords
tag
900mhz
antenna
wireless charging
dual band
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Application number
PCT/KR2015/000704
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French (fr)
Korean (ko)
Inventor
차정훈
하병용
정구인
김창현
김재식
김영배
이은미
이학용
박찬영
박세영
서봉진
송정훈
윤형기
Original Assignee
(주)소노비젼
서울메트로
엘지히다찌 주식회사
케이아이씨시스템즈(주)
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Application filed by (주)소노비젼, 서울메트로, 엘지히다찌 주식회사, 케이아이씨시스템즈(주) filed Critical (주)소노비젼
Publication of WO2015115752A1 publication Critical patent/WO2015115752A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10376—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
    • G06K7/10178—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field

Definitions

  • the present invention relates to a dual-band integrated RFID system for smart operation management, more specifically, the existing 900MHz RFID system and 2.4GHz RFID system separately for the management of railroad vehicle parts and vehicles, and various moving object positions and movements. It is equipped with a 900MHz / 2.4GHz dual band integrated RFID reader having four directional channels in the east, west, north and north directions, and a dual-band active tag having a wireless charging function attached to the railroad parts and the underside of the vehicle, and a tag collector managing the active tag. Dual-band integrated RFID system for smart operation management such as railway vehicle parts and vehicle management, which can be beam-formed at 90 ° angle by system rotating body and motor and wirelessly charge without replacing the battery of dual band active tag. It is about.
  • the Radio Frequency IDentification (RFID) system reads tag information attached to a product using, for example, an RFID tag containing unique information attached to the product, or a wireless communication technology in the 13.56 MHz or 900 MHz RFID frequency band. It is a system for transmitting an RFID reader and information recognized by the RFID reader to an application program of the host computer through the RFID middleware.
  • RFID Radio Frequency IDentification
  • the RFID technology for product management is standardized in ISO / IEC JTC1 SC31, and the air interface protocol is defined in the ISO / IEC 18000 series for each frequency between the RFID reader and the tag, and EPC Global uses the 900MHz band for distribution and It provides B2B2C service in logistics.
  • RFID frequencies are 135 kHz, 13.56 MHz, 433 MHz, and 860-960 MHz. Use the 2.45 GHz band.
  • the low frequency 13.56MHz RFID system is used to recognize the tag attached to the product.
  • the recognition distance is only a few centimeters, and the recognition distance of the 900MHz UHF RFID system is up to 100m away and is used for distribution, logistics, and port containers.
  • the RFID reader and tag are composed of a forward link and a reverse link according to the transmission direction of the information.
  • the forward link transmits a command signal and a continuous wave (CW) signal that supplies power to the tag to obtain the tag's unique information from the RFID reader.
  • the reverse link is a process until the tag reaches the tag signal through the backscattering process based on the CW signal received from the RFID reader.
  • the RFID tag consists of a transponder chip and antenna made of semiconductors, and consists of a tag chip and antenna containing unique product information, and an active tag and a passive tag according to a power supply method. Are classified.
  • Passive tags operate by receiving energy from the reader's radio signal without an internal power supply, whereas active tags have an RF tag cell built in to operate on their own. It is also classified into a chip tag using a silicon semiconductor chip and a chipless tag composed only of an LC device, a plastic or a polymer device.
  • RFID systems are widely used in the defense industry, railway and logistics industry, pharmaceutical industry, medical products, distribution management such as warehouse / inventory management.
  • the reader recognizes the tag in the existing RFID system, it is recognized only within the range of the reader antenna.
  • the wireless recognition area is used in the near field and the active tag uses 2.4.
  • the wireless recognition area is used at a long distance.
  • the active tag is used at a long distance, and the existing active tag uses a battery, so it is inconvenient to replace the battery and the battery can be replaced at the same time. Since there is a separate case, it is difficult to satisfy mechanical reliability in a harsh environment.
  • An object of the present invention for solving the above problems is that 900MHz / 2.4GHz dual band having four directional channels in the east-west, north-west direction that the existing 900MHz RFID system and 2.4GHz RFID system is used separately for railway vehicle parts and vehicle management It is equipped with an integrated RFID reader, a dual band active tag with a wireless charging function attached to the railroad parts and the underside of the vehicle, and a tag collector for managing the active tag.It can be beam-formed at a 90 ° angle by the system rotor and the motor. It provides a dual band integrated RFID system for smart operation management such as railway vehicle parts and vehicle management, which is wirelessly charged without replacing the battery of the dual band active tag.
  • a dual-band integrated RFID system for smart operation management 2.4GHz antenna and 900MHz in each direction of the four directional channels, so as to manage the active tag in the yard environment, warehouse environment and railroad vehicle underneath
  • a 900 MHz / 2.4 GHz dual band integrated RFID reader system having antennas each having a directional channel for recognizing a dual band active tag; Dual-band active tag having a wireless charging function to supply a DC voltage by charging wirelessly in the 900MHz band; And a tag collector having a wireless charging function, wherein the 900 MHz / 2.4 GHz dual band integrated RFID reader system rotates the system rotating body at a 90 ° angle to recognize a tag in a shadowed area by beam forming, and the system rotating body. It has a motor that rotates at a 90 ° angle.
  • the 900 MHz / 2.4 GHz dual band integrated RFID reader system having the directional channel includes: a 2.4 GHz directional antenna and a 900 MHz directional antenna integrally formed with four sectors when a rectangular channel is formed in four sides in the east-west and north-south directions; A four-channel 900MHz RFID reader connected to the east-west-south direction (region A, region B, region C, region D) by an RF cable to each of the 900 MHz antennas that are integrally provided simultaneously; A four-channel 2.4 GHz RFID reader connecting the 2.4 GHz antennas which are simultaneously provided in one piece in the east-west-south direction (region A, region B, region C, region D) simultaneously with an RF cable; It is connected to the 4-channel 900MHz RFID reader and the 4-channel 2.4GHz RFID reader, and includes a control board for external interface management and power management such as a passive tag and a sensor for determining whether the reader is operating, and a 2.4GHz / 900MHz in one radome. Dual
  • the method of maximizing the directionality for region division of the directional channel of the 2.4 GHz / 900 MHz dual band integrated RFID reader system having the directional channel increases the gain of the antenna directed to the region and narrows the beam, and between the antennas.
  • the method of maximizing the isolation is used, and the dual reflector is used in the antenna to maximize the spatial isolation between sector 1 and sector 2 in order to maximize the direction.
  • the dual band active tag having the wireless charging function includes a small 2.4 GHz / 900 MHz dual band antenna, an impedance matching circuit, and an RF signal processing circuit capable of simultaneously processing the 2.4 GHz / 900 MHz dual band.
  • the dual band active tag having the wireless charging function includes 900 MHz and 2.4 GHz dual band antennas; An impedance matching circuit for performing impedance matching to resonate at 900 MHz and 2.4 GHz frequencies, having a signal intensity of at least -14 dBm or higher and inputting a signal intensity of 30 dBm or lower to a 900 MHz tag chip; A 900 MHz tag chip operating with a 900 MHz tag; A DC power cut-off unit which passes only a 900 MHz AC voltage signal and cuts a DC voltage signal; The 900MHz AC voltage signal (RF signal) is converted to DC voltage using the RFtoDC converter to charge the supercapacitor by supplying the DC voltage charged wirelessly to the supercapacitor activated by the boost converter.
  • RF signal radio frequency conversion
  • a wireless charging unit for monitoring a DC voltage wirelessly charged by the voltage and current monitoring unit and an external energy controller to prevent overcharge, and supplying a DC voltage to a transceiver of the 900 MHz tag chip and the 2.4 GHz tag so that the battery can be used without a battery; 900MHz RF signal blocking unit for passing the 2.4GHz RF signal and blocking the 900MHz RF signal; And a 2.4 GHz tag transceiver configured to receive a 2.4 GHz RF signal through a 2.4 GHz wireless transmit / receive module and provide a sensor data by operating the tag by providing the microprocessor module to operate a 2.4 GHz tag. And a sensor receiving sensor data from the 2.4GHz tag transceiver.
  • the dual band active tag having the wireless charging function includes a small dual band antenna, a 900 MHz passive tag unit, a wireless charging circuit unit, and a 2.4 GHz active tag unit, and the 900 MHz passive tag unit and the dual band antenna are small and affect the external environment.
  • Lattice type microstrip antenna structure and indirect feeding meander type microstrip antenna structure are used to minimize the impedance. The signal received by the dual band antenna is matched through the impedance matching circuit and the power charged by the wireless charging circuit part is used.
  • the signal input from the antenna enters into the 900MHz tag chip and the wireless charging unit, and the 900MHz tag chip uses the information of the signal transmitted from the reader, and the wireless charging unit performs the wireless charging with the signal strength, and the 900MHz tag chip Must have a signal strength of at least -14 dBm And it is characterized by implementing an impedance matching circuit so that the signal strength of up to 30dBm or less is input.
  • the tag collector having the wireless charging function includes a cavity-type case, a 900 MHz antenna for wireless charging, a 2.4 GHz / 900 MHz dual band antenna for tag reissue, a 2.4 GHz / 900 MHz reader and an antenna radome, and an operation button in addition to a power supply.
  • the external interface such as the charge level display LED and the speaker, is operated by a program. The reason for this is to minimize the failure rate of the equipment due to parts such as dust and oil because it is used in an external environment such as a railway. Is formed of four sides, six sides, or eight sides, and the number of sides is not related to four sides, six sides, or eight sides, and forms a lot of diffuse reflection.
  • Each cavity includes a 900 MHz antenna for wireless charging. ,
  • the 900MHz antenna for wireless charging uses an antenna having a uniform electric field distribution in order to have the same amount of charge to charge an active tag because a large number of tags are put in a cavity.
  • the dual-band (2.4GHz / 900MHz) antenna for tag reissue has the characteristics of a shelf antenna having a small and switch function, a selective recognition area recognized only where a tag is located, and not recognized elsewhere, and 2.4.
  • the switch function is provided in the GHz / 900MHz dual-band antenna, and when the 900MHz tag information is input, the 900MHz tag information is transmitted from the 900MHz RFID reader and the signal is not transmitted from the 2.4GHz reader.
  • the tag collector having the wireless charging function has a structure in which the lid of the upper surface is opened and closed based on the connection ring, and both the bottom and the upper surface are made of metal plates, the inner surface is formed of plastic, and the outer surface blocks the electromagnetic waves. It is made of metal, and consists of a cavity-type case, a 900MHz antenna for wireless charging, a 2.4GHz / 900MHz antenna, a 2.4GHz / 900MHz reader and an antenna radome, and the cavity-shaped case is quadrilateral or hexagonal.
  • Electromagnetic waves are constantly diffused within the cavity to charge multiple active tags simultaneously. Since the 900 MHz RFID signal used inside the cavity in the tag collector is used to charge the active tag rather than to read information on the tag, the signal of the diffuse reflection occurring on the metal surface is not acted as a noise but is wirelessly charged. Characterized in that it is used as a signal source.
  • 900MHz / 2.4GHz dual-band integrated RFID system for smart operation management is a four-way directional RFID reader system, as well as the location and movement path as well as the wireless recognition of objects and people with passive and active tags attached You can check.
  • Dual-band active tag with charging function can overcome the inconvenience and life cycle shortcomings due to battery replacement when using existing active tag, and overcomes the problem of limited recognition area of RFID at the same time in near and far areas It can be used.
  • the tag collector with charging function can automatically charge the tag when it is stored.
  • these RFID systems can be used in near-road environments, such as rail vehicle component inspection sites and yard environments such as railroad vehicles and car yards, and management parts such as railroad vehicle parts, automotive parts, and aerospace parts warehouses, and moving goods and warehouse environments with high mobility. It is for the efficient management of parts in the environment where the area and the remote area should be recognized at the same time and the movement and location of the object with the RFID tag.
  • 900MHz / 2.4GHz dual-band RFID integrated reader with a directional channel to manage the active tag under the railroad car and dual-band RFID active tag and active tag with wireless charging function in the 900MHz band attached to the railroad parts and the vehicle bottom.
  • the RFID tag is used to recognize the tag information of the tag attached to the goods with the freely moving antenna and fixed shelf antenna for warehouse entry, warehouse management, and access control.
  • the present invention has an effect of easily obtaining the tag information by the antenna for the inspection of the variable length or fixed shelf antenna for the article attached to the tag, such as logistics warehouse, material warehouse, warehouse type large store, etc.
  • the tag information may be transmitted to a server through an internet communication network to view the analyzed tag information.
  • FIG. 1 is a configuration diagram of a 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management according to the present invention.
  • FIG. 2 shows a 4-channel 2.4 GHz reader and a 4-channel 900 MHz reader, a 2.4 GHz / 900 MHz directional antenna, a passive tag for determining whether the reader is operating, a control board for external interface management and power management, and a system rotating body.
  • FIG. 3 is a diagram illustrating an example of applying a 900 MHz / 2.4 GHz dual band integrated RFID system having directionality covering regions A, B, C, and D in the east, west, north, and north directions according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a beam width and a rotation radius of a 900MHz / 2.4GHz dual band integrated RFID system having directivity.
  • Figure 5 is a photograph showing the internal appearance of the antenna and the integrated shape of the radome.
  • FIG. 6 is a diagram illustrating a dual band integrated RFID reader system and a dual band active tag overlaid on one radome.
  • FIG. 7 is a block diagram of a dual band active tag having a wireless charging function according to the present invention.
  • FIG. 8 is a diagram illustrating a tag collector having a wireless charging function according to the present invention.
  • FIG. 9 is a flowchart illustrating an operation procedure of a tag collector having a wireless charging function.
  • the present invention proposes a 900MHz / 2.4GHz dual-band integrated RFID system to be applicable to the RFID system for railroad cars, 900MHz / 2.4GHz dual-band integrated Active RFID system that conforms to the ISO / IEC 18000-6C and ISO / IEC 24730 international standards
  • the RF signal processing capable of dual band simultaneous processing and the design of an independent RF circuit provide an active tag with wireless charging function.
  • tags were attached to railroad cars and the recognition distances (20m, 50m, 100m, 150m, 200m, 300m) with 900MHz / 2.4GHz dual band integrated RFID readers with directional channels were measured.
  • FIG. 1 is a configuration diagram of a 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management according to the present invention.
  • the 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management of the present invention manages active tags in yard environments such as rail vehicle parts inspection sites, railroad cars, and car yards, warehouse environments, and railroad cars.
  • a 900 MHz / 2.4 GHz dual band integrated RFID reader system 100 having a directional channel for recognizing a dual band active tag, each having a 2.4 GHz antenna and a 900 MHz antenna in each direction of the directional channel; Dual-band active tag 200 having a wireless charging function for supplying a DC voltage by charging wirelessly in the 900MHz band;
  • a tag collector 300 having a wireless charging function, wherein the 900 MHz / 2.4 GHz dual band integrated RFID reader system includes a system rotating body and a motor rotating at a 90 ° angle by beamforming to recognize a tag in a shadow area. Characterized in that.
  • the system is used as a 900 MHz / 2.4 GHz dual band integrated RFID system with wireless charging function for the management of railway vehicle smart operation, and this RFID system is used for the part that needs to recognize near and far areas such as yard environment and warehouse environment. It is for efficient management and movement and location of things with RFID tags.
  • FIG. 2 shows a 4-channel 2.4 GHz reader and a 4-channel 900 MHz reader, a 2.4 GHz / 900 MHz directional antenna, a passive tag for determining whether the reader is operating, a control board for external interface management and power management, and a system rotating body.
  • the directional 2.4GHz / 900MHz dual band integrated RFID reader system has a 4-channel 2.4GHz reader / 4 channel 900MHz reader and a 2.4GHz / 900MHz 4-sector directional antenna and passive tags for determining whether the reader is operating, external interface management and power supply. It consists of an administrative control board and a system rotor, and this system is integrated into one radome.
  • the 2.4 GHz RFID reader consists of four channels of RF transmit and receive pods, each connected to four antennas via an RF cable.
  • the 2.4GHz RFID reader is used to manage location and movement paths by wirelessly recognizing people, parts, and materials with active tags in remote areas.
  • the 2.4 GHz RFID reader enables four channels to operate simultaneously and selectively for each channel. In some cases, a sector-by-sector beamforming technique may be included.
  • the 900MHz RFID reader consists of four channels of RF transmission and reception ports, and is connected to four antennas by RF cable.
  • the 900MHz RFID reader is used for wireless charging of active tags with wireless recognition and wireless charging of parts, people and materials with passive tags in the near field.
  • the 900MHz RFID reader enables four channels to operate simultaneously and selectively for each channel. In some cases, a sector-by-sector beamforming technique may be included.
  • Two RFID readers are divided into four channels and have directionality as well as management of tagged people and things and real-time location, as well as movement of people and things to identify movements of people and things. Can manage up to. If it is implemented to determine the four or more directions, since it is difficult to accurately separate the respective directions, the present invention implements four channels in four directions, such as east, west, north and south.
  • the 2.4GHz / 900MHz directional antenna with four sectors consists of a 900MHz single antenna, a 2.4GHz 2x2 array antenna, and a dual band passive tag that determines whether the reader operates in one of the north-west, north-west directions.
  • the 2.4GHz 2x2 array antenna is located at the top and consists of a 900MHz single antenna at the bottom. This is because when the existing RFID reader uses 4 channels and uses 4 or more sectors, it is difficult to separate the isolation and the directional part from polarization.
  • Passive dual band tag that determines whether the reader operates or not can not have an external interface to determine whether the reader operates in an environment where high reliability is required, such as a railway environment, and determines whether the RFID reader operates by placing a tag on the antenna.
  • a directional antenna having 4 sectors of 2.4 GHz / 900 MHz consists of a single 900 MHz antenna, a 2.4 GHz 2x2 array antenna, and a dual band passive tag that determines whether the RFID reader operates in one direction. do.
  • the 2.4GHz 2x2 array antenna is located at the top and consists of a single 900MHz antenna at the bottom. This is because when the existing RFID reader uses 4 channels and uses 4 or more sectors, it is difficult to separate the isolation and the directional part against polarization.
  • the dual-band passive tag that determines the operation of the RFID reader can not have an external interface to determine the operation of the RFID reader in an environment requiring high reliability such as a railway environment. .
  • the external interface connects only the power and communication lines to the outside. All other interfaces are removed for high reliability and product safety.
  • the system rotating body When the system rotating body transmits 2.4GHz / 900MHz dual band RFID signal in 4 directions, but no tag exists in that direction, it rotates according to the beam width of the radiation pattern of the antenna and recognizes the unrecognized tag in any direction. It is used to check if it is present.
  • the rotational speed of the rotor is calculated by separating the tag recognition value and the secondary rotation value during the first rotation.
  • This directional 2.4 GHz / 900 MHz dual band integrated RFID reader system is easy when there is a large amount of environment and objects and people's movement path that requires wireless recognition in near and far areas. Especially, it is the best system in the environment that needs to judge the movement route such as the railway environment.
  • the movement path of the tag is shown.
  • the tag in area A moves to area A
  • the tag in area A moves to area B (same as when the area A tag moves to area D)
  • the tag in area A moves to area B, Divide by region to move.
  • the movement of this tag is used for parts management, and it can reduce the time when major equipment and parts are lost or reused.
  • FIG. 3 is a diagram illustrating an example of applying a 900 MHz / 2.4 GHz dual band integrated RFID system having directionality covering regions A, B, C, and D in the east, west, north, and north directions according to an embodiment of the present invention.
  • the method for maximizing the directionality of the directional channel of the 900 MHz / 2.4 GHz dual band integrated RFID reader system having the directional channel is to increase the gain of the antenna, narrow the beam, and maximize the isolation between the antennas.
  • area A the antenna beam width in area A is 90 degrees but in real environments the area is enlarged by diffuse reflection. Therefore, it is necessary to devise a plan for minimizing the area that is enlarged by diffuse reflection while the beam width that is divided into regions is maximum.
  • dual reflectors are used on the antenna to maximize the spatial isolation between sector 1 and sector 2.
  • the polarization of the sector 1 and sector 2 are configured as shown in Table 1 for the polarized isolation of the tag.
  • Table 1 direction sector 1 sector 2 sector 3 sector 4 partiality Left circular polarization Right circular polarization Left circular polarization Right circular polarization
  • FIG. 4 is a diagram illustrating beam width and rotation radius of a directional 900 MHz / 2.4 GHz dual band active RFID system.
  • the antenna beam width and rotation radius determine the recognition range of the tag based on the beam width of the antenna.
  • the beam width of a 900MHz antenna is theoretically 60 ° when the antenna gain is 6dBi.
  • measuring 900 MHz tags has a narrower recognition range than the beam width of the antenna.
  • 2.4GHz antennas theoretically have a beam width of 30 ° when the antenna gain is 12dBi.
  • the recognition range of the two systems is less than 90 ° maximum rotation radius based on the recognition range of the 2.4GHz antenna. This provides better mechanical cost savings, power consumption and data processing capabilities compared to the beamforming technology with 180 ° or 360 ° turning radius used in conventional phased array antennas.
  • the direction information of the tag is first received by the sector antenna and the direction information of the tag is processed, and the direction information of the tag is processed by receiving the tag information of the unrecognized area while performing beamforming.
  • Figure 5 is a photograph showing the internal appearance of the antenna and the integrated shape of the radome.
  • FIG. 6 is a diagram illustrating a dual band integrated RFID reader system and a dual band active tag overlaid on one radome.
  • FIG. 7 is a block diagram of a dual band active tag having a wireless charging function according to the present invention.
  • the dual band active tag having a wireless charging function consists of a small dual band antenna, a 900MHz passive tag unit, a wireless charging circuit unit, and a 2.4GHz active tag unit.
  • the 900MHz passive tag section dual band antenna uses a lattice microstrip antenna structure and an indirectly fed meander type microstrip antenna structure that are small and minimize the influence on the external environment. Impedance matching is performed so that the signal received by the 2.4 GHz / 900 MHz dual band antenna is resonated at 900 MHz and 2.4 GHz through an impedance matching circuit, and the power charged by the wireless charging circuit unit is used.
  • the signal input from the antenna enters the 900MHz tag chip and the wireless charger.
  • the 900MHz tag chip uses the information of the signal transmitted from the reader, and the wireless charger performs wireless charging with the signal strength.
  • the 900MHz tag chip should have a signal sensitivity of at least -14dBm or higher and implement an impedance matching circuit so that a signal strength of up to 30dBm or less is input.
  • the wireless charging circuit unit performs wireless charging with the strength of the 900 MHz signal received from the antenna.
  • the configuration of the wireless charging unit includes a DC BLOCKS 203 for preventing reverse current, an RFtoDC converter 211 for converting RF signals into DC, and a super capacitor 214 for wireless charging storage. It consists of a boost converter 212 and a voltage and current monitoring unit 213, and an external energy controller 217 to control to prevent overvoltage.
  • the 2.4 GHz active tag unit includes an RF transceiver module 231, a microprocessor module 232, and a sensor 214.
  • the 2.4 GHz active tag unit is driven using the charged power at the strength of the 900 MHz radio signal.
  • the dual band active tag having the wireless charging function
  • Super Capacitor (214) is supplied to the DC voltage charged wirelessly to the supercapacitor 214 to monitor the DC voltage wirelessly charged by the voltage and current monitoring unit 213 and the external energy controller 217
  • a wireless charging unit which prevents overcharge and supplies a DC voltage required to the transceiver 230 of the 900 MHz tag chip 202 and the 2.4 GHz tag so that the battery can be used without a battery;
  • 900MHz RF signal blocking unit 220 for passing the 2.4GHz RF signal and blocking the 900MHz RF signal; And a 2.4 GHz tag that receives a 2.4 GHz RF signal through the 2.4 GHz wireless transmit / receive module 231 and provides the sensor data to the sensor 241 by operating the tag by providing the 2.4 GHz RF signal to the microprocessor module 232 that operates the 2.4 GHz tag.
  • Transceiver 230 And a sensor 241 that receives sensor data from the 2.4 GHz tag transceiver 230.
  • Dual-band active tags with wireless charging can be used simultaneously in two systems.
  • the RF signal can be used to the maximum, and can be used as an independent form.
  • This tag uses both RF signal information and signal strength to reduce system power consumption and increase battery life.
  • the dual band active tag 200 having a wireless charging function includes a small 900 MHz / 2.4 GHz dual band antenna, an impedance matching circuit, and an RF signal processing circuit capable of simultaneous 900 MHz / 2.4 GHz dual band processing. It can be used simultaneously in the system. RF signal processing for 900MHz / 2.4GHz dual band simultaneous processing and independent RF circuit design to increase SNB Higher transmission efficiency reduces system power consumption and minimizes battery life in 2.4GHz RFID systems .
  • the tag collector 300 having the wireless charging function is used only for removing the anti-reflection, not for charging the active tag used in the existing RFID system.
  • a wireless recognition area is used at a long distance.
  • existing active tags use batteries, it is difficult to satisfy mechanical reliability in harsh environments because there are separate parts for battery replacement and a case for battery replacement.
  • the present invention uses an active tag having a wireless charging function, a tag collector capable of charging a separate active tag is required.
  • the active tag to be inspected continuously operates under the signal of the existing reader, which causes confusion in tag management, which makes it very difficult to manage information.
  • FIG. 8 is a diagram illustrating a tag collector having a wireless charging function according to the present invention.
  • the tag collector 300 having a wireless charging function used in the present invention includes a cavity-type case, a 900MHz antenna for wireless charging, a 2.4GHz / 900MHz dual band antenna for tag reissue, a 2.4GHz / 900MHz reader, and an antenna radome.
  • external buttons such as operation buttons, charge level indicator LEDs, and speakers can be programmed. The reason is to minimize the failure rate of equipment due to parts such as dust and oil because it is used in an external environment such as a railway.
  • the cavity-shaped case is formed of quadrilateral or hexagonal or octagonal surfaces.
  • the number of sides is not related to the quadrilateral, hexagonal or octagonal sides, and forms a lot of diffuse reflection.
  • Each cavity includes a 900MHz antenna for wireless charging.
  • an antenna having a uniform electric field distribution is used to charge an active tag to have the same charge amount.
  • the dual-band (2.4GHz / 900MHz) antenna for tag reissue has the characteristics of a shelf-type antenna with a small and switch function, an optional recognition area that recognizes only where a tag is located and is not recognized elsewhere. This is because the switch function in the 2.4 GHz / 900 MHz dual band antenna is effective for inputting the information of a tag to be reissued.
  • the switch function in the 2.4 GHz / 900 MHz dual band antenna is effective for inputting the information of a tag to be reissued.
  • the 900MHz tag information is input, the 900MHz tag information is transmitted from the 900MHz RFID reader, and the signal is not transmitted from the 2.4GHz reader.
  • the tag collector 300 having a wireless charging function is a structure in which the lid of the upper surface is opened and closed based on the connection ring, and both the bottom and top surfaces are made of metal plates, the inner surface is formed of plastic, and the outer surface is electromagnetic waves. Use metal to block.
  • the electromagnetic waves inside the cavity operate only inside the cavity and ensure no electromagnetic leakage.
  • the electromagnetic wave reflected from the antenna is reflected in various directions according to the shape of the metal surface.
  • the electromagnetic radiation emitted from the antenna continuously diffuses in the cavity to charge several active tags simultaneously. Make it possible. Since the 900 MHz RFID signal used inside the cavity in the tag collector 300 is not used to read information on the tag but is used to charge an active tag, the signal of diffuse reflection on the metal surface is not a noise but a signal for wireless charging. Used as a circle. Therefore, if I have a lot of reflections, it can be effective to charge the active tag.
  • the 2.4GHz / 900MHz dual-band reader antenna used in the tag collector is used for charging confirmation and entering a new ID number when the active tag is charged.
  • the cavity case is quadrilateral or hexagonal and includes a 900 MHz antenna for wireless charging on each side.
  • the electromagnetic waves inside the cavity operate only inside the cavity and ensure no electromagnetic leakage.
  • the inside of the cavity uses the principle of diffuse reflection to allow electromagnetic waves emitted from the antenna to continuously diffuse in the cavity to simultaneously charge multiple active tags 200. Since the 900 MHz RFID signal used inside the cavity in the tag collector 300 is not used to read information on the tag but is used to charge the active tag 200, the signal of diffuse reflection on the metal surface does not act as a noise. Used as a signal source for wireless charging. Therefore, when a large amount of diffuse reflection occurs, the effect of charging the active tag 200 can be obtained.
  • the 2.4GHHHz / 900MHz dual band reader antenna used in the tag collector 300 is used for charging confirmation and inputting a new ID number when the active tag is charged.
  • 900MHz / 2.4GHz dual-band integrated RFID system for smart operation management is a four-way directional RFID reader system, as well as the location and movement path as well as the wireless recognition of objects and people with passive and active tags attached You can check.
  • Dual-band active tag with charging function can overcome the inconvenience and life cycle shortcomings due to battery replacement when using existing active tag, and overcomes the problem of limited recognition area of RFID at the same time in near and far areas It can be used.
  • the tag collector with charging function can automatically charge the tag when it is stored.
  • these RFID systems can be used in near-road environments, such as rail vehicle component inspection sites and yard environments such as railroad vehicles and car yards, and management parts such as railroad vehicle parts, automotive parts, and aerospace parts warehouses, and moving goods and warehouse environments with high mobility. It is for the efficient management of parts in the environment where the area and the remote area should be recognized at the same time and the movement and location of the object with the RFID tag.
  • 900MHz / 2.4GHz dual-band RFID integrated reader with a directional channel to manage the active tag under the railroad car and dual-band RFID active tag and active tag with wireless charging function in the 900MHz band attached to the railroad parts and the vehicle bottom.
  • the RFID tag is used to recognize the tag information of the tag attached to the goods with the freely moving antenna and fixed shelf antenna for warehouse entry, warehouse management, and access control.
  • the present invention has an effect of easily obtaining the tag information by the antenna for the inspection of the variable length or fixed shelf antenna for the article attached to the tag, such as logistics warehouse, material warehouse, warehouse type large store, etc.
  • the tag information may be transmitted to a server through an internet communication network to view the analyzed tag information.

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Abstract

The present invention relates to an integrated 900MHz/2.4GHz dual-band RFID system for smart operation management, the system comprising: an integrated 900MHz/2.4GHz dual-band RFID reader system provided with a 2.4GHz antenna and a 900MHz antenna in each direction of a directional channel so as to manage dynamic tags in yard and storage environments and under railroad cars; a dynamic dual-band tag having wireless charging function for supplying DC voltage by wirelessly charging from the 900MHz band; and a tag collector having a wireless charging function, wherein the dynamic 900MHz/2.4GHz dual-band RFID system comprises: a system rotating body rotating by 90º to recognize tags in the shadow region by beamforming; and a motor. More specifically, in order to manage a library or stock and release in a storage facility, or to control entry and exit using an RFID tag, the present invention is utilized in a mobile inventory device taking product inventory by reading the tag information of a tag attached to a product by means of a freely moving inventory antenna and a fixed shelf antenna. Accordingly, the present invention has the benefit of allowing the tag information, for products to which tags are attached and which are stored in places such as a warehouse, materials storage facility and large warehouse-type store, to be easily acquired by means of a variable-length inventory antenna or a fixed shelf antenna, and of allowing the analyzed tag information to be read by transmitting the acquired tag information to a server via internet communication network.

Description

스마트 운영 관리를 위한 듀얼밴드 일체형 ＲＦＩＤ 시스템Dual band integrated RFI system for smart operation management
본 발명은 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템에 관한 것으로, 더욱 상세하게는 철도 차량 부품 및 차량관리 및 각종 이동체 위치관리 및 이동 관리를 위해 기존에 900MHz RFID 시스템과 2.4GHz RFID 시스템이 개별적으로 사용되는 것을 동서남북 방향으로 4개의 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더와 철도부품 및 차량하부에 부착하는 무선충전기능을 가지는 듀얼밴드 능동형 태그와 능동형 태그를 관리하는 태그 수집기를 구비하며 시스템 회전체와 모터에 의해 90° 각도로 빔 포밍이 가능하며, 듀얼 밴드 능동형 태그의 밧데리의 교체 없이 무선으로 충전하는, 철도 차량 부품 및 차량관리 등의 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템에 관한 것이다.The present invention relates to a dual-band integrated RFID system for smart operation management, more specifically, the existing 900MHz RFID system and 2.4GHz RFID system separately for the management of railroad vehicle parts and vehicles, and various moving object positions and movements. It is equipped with a 900MHz / 2.4GHz dual band integrated RFID reader having four directional channels in the east, west, north and north directions, and a dual-band active tag having a wireless charging function attached to the railroad parts and the underside of the vehicle, and a tag collector managing the active tag. Dual-band integrated RFID system for smart operation management such as railway vehicle parts and vehicle management, which can be beam-formed at 90 ° angle by system rotating body and motor and wirelessly charge without replacing the battery of dual band active tag. It is about.
RFID(Radio Frequency IDentification) 시스템은 예를들면, 제품에 부착된 고유의 정보를 포함하는 RFID 태그(tag), 13.56MHz 또는 900MHz RFID 주파수 대역의 무선 통신 기술을 사용하여 제품에 부착된 태그 정보를 읽어들이는 RFID 리더, 및 RFID 리더로 인식된 정보를 RFID 미들웨어를 통해 호스트 컴퓨터의 응용 프로그램으로 전송하는 시스템이다.The Radio Frequency IDentification (RFID) system reads tag information attached to a product using, for example, an RFID tag containing unique information attached to the product, or a wireless communication technology in the 13.56 MHz or 900 MHz RFID frequency band. It is a system for transmitting an RFID reader and information recognized by the RFID reader to an application program of the host computer through the RFID middleware.
제품 관리용 RFID 기술은 ISO/IEC JTC1 SC31에서 표준화를 하고 있으며, RFID 리더와 태그 사이의 각 주파수별로 에어 인터페이스 프로토콜을 ISO/IEC 18000 시리즈에서 정의하고 있으며, EPC Global은 900MHz 대역을 사용하는 유통 및 물류 분야에서 B2B2C 서비스를 제공하고 있다. The RFID technology for product management is standardized in ISO / IEC JTC1 SC31, and the air interface protocol is defined in the ISO / IEC 18000 series for each frequency between the RFID reader and the tag, and EPC Global uses the 900MHz band for distribution and It provides B2B2C service in logistics.
RFID 주파수는 135kHz, 13.56MHz, 433 MHz, 860~960MHz. 2.45 GHz 대역을 사용한다. 저주파 13.56MHz RFID 시스템은 제품에 부착된 태그 인식에 사용하는데 인식거리가 수 cm에 불과하며, 900MHz UHF RFID 시스템의 인식거리는 100m 원거리까지 인식이 가능하며 유통 및 물류, 항만의 컨테이너 등에 사용된다. RFID frequencies are 135 kHz, 13.56 MHz, 433 MHz, and 860-960 MHz. Use the 2.45 GHz band. The low frequency 13.56MHz RFID system is used to recognize the tag attached to the product. The recognition distance is only a few centimeters, and the recognition distance of the 900MHz UHF RFID system is up to 100m away and is used for distribution, logistics, and port containers.
RFID 리더와 태그는 정보의 전송 방향에 따라 순방향 링크(forward link) 및 역방향 링크(reverse link)로 구성된다. 순방향 링크는 RFID 리더로부터 태그로 태그의 고유한 정보를 얻기 위해 명령 신호 및 태그로 전원을 공급하는 CW(Continuous Wave) 신호를 전송한다. 역방향 링크는 태그가 RFID 리더로부터 수신한 CW 신호를 바탕으로 역산란 과정을 거쳐 RFID 리더로 태그 신호를 도달할 때까지의 과정이다.The RFID reader and tag are composed of a forward link and a reverse link according to the transmission direction of the information. The forward link transmits a command signal and a continuous wave (CW) signal that supplies power to the tag to obtain the tag's unique information from the RFID reader. The reverse link is a process until the tag reaches the tag signal through the backscattering process based on the CW signal received from the RFID reader.
RFID 태그는 반도체로 제작된 트랜스폰더 칩과 안테나로 구성되며, 고유의 제품 정보를 포함하는 태그 칩과 안테나로 구성되고, 전원 공급 방식에 따라 능동형 태그(active tag)와 수동형 태그(passive tag)로 분류된다.The RFID tag consists of a transponder chip and antenna made of semiconductors, and consists of a tag chip and antenna containing unique product information, and an active tag and a passive tag according to a power supply method. Are classified.
수동식 태그는 내부 전원없이 판독기의 전파 신호로부터 에너지를 공급받아 동작하는데 비해 능동식 태그는 스스로 작동하기 위해 RF 태그 전지가 내장되어 있다. 실리콘 반도체 칩을 사용하는 칩 태그와 LC소자, 플라스틱 또는 폴리머(polymer: 중합체) 소자로만 구성된 무칩 태그로 구분하기도 한다.Passive tags operate by receiving energy from the reader's radio signal without an internal power supply, whereas active tags have an RF tag cell built in to operate on their own. It is also classified into a chip tag using a silicon semiconductor chip and a chipless tag composed only of an LC device, a plastic or a polymer device.
이러한 RFID 시스템은 국방 산업, 철도와 물류 산업, 제약산업, 의료 제품, 창고/재고 관리 등의 유통 관리 등에 광범위하게 사용된다.Such RFID systems are widely used in the defense industry, railway and logistics industry, pharmaceutical industry, medical products, distribution management such as warehouse / inventory management.
그러나, 기존 RFID 시스템에서 리더에서 태그를 인식할 때 리더 안테나의 인식 영역 범위내에서만 인식이 되었고, 수동형 태그를 사용하는 900MHz RFID 시스템은 무선인식영역이 근거리영역에서 사용이 되었고 능동형 태그를 사용하는 2.4GHz RFID 시스템은 무선인식영역이 원거리에 사용되었으며, 기존 RFID 시스템에서 능동형 태그는 무선인식영역이 원거리에 사용되었으며, 기존 능동형 태그는 밧데리를 사용하기 때문에 밧데리 교체에 대한 불편함과 동시에 밧데리를 교체할 수 있는 케이스가 별도로 존재를 하기 때문에 열악한 환경에서 기구적인 신뢰성을 만족하기가 어려웠다.However, when the reader recognizes the tag in the existing RFID system, it is recognized only within the range of the reader antenna. In the 900MHz RFID system using the passive tag, the wireless recognition area is used in the near field and the active tag uses 2.4. In the GHz RFID system, the wireless recognition area is used at a long distance. In the existing RFID system, the active tag is used at a long distance, and the existing active tag uses a battery, so it is inconvenient to replace the battery and the battery can be replaced at the same time. Since there is a separate case, it is difficult to satisfy mechanical reliability in a harsh environment.
또한, 기존 900MHz RFID 시스템과 2.4GHz RFID 시스템은 개별적으로 사용되었으며, 듀얼 밴드로 구성하여 방향성을 가지는 능동형 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템과 900MHz 대역에서 무선충전 기능을 가지는 능동형 태그와 무선충전기능을 가지는 태그 수집기를 제공하지 않았던 문제점이 있었다. In addition, the existing 900MHz RFID system and 2.4GHz RFID system were used separately, and active 900MHz / 2.4GHz dual band integrated RFID reader system with dual band configuration and active tag and wireless charging with wireless charging function in 900MHz band There was a problem that did not provide a tag collector with a function.
상기 문제점을 해결하기 위한 본 발명의 목적은 철도 차량 부품 및 차량관리를 위해 기존에 900MHz RFID 시스템과 2.4GHz RFID 시스템이 개별적으로 사용되는 것을 동서남북 방향으로 4개의 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더와 철도부품 및 차량하부에 부착하는 무선충전기능을 가지는 듀얼밴드 능동형 태그와 능동형 태그를 관리하는 태그 수집기를 구비하고, 시스템 회전체와 모터에 의해 90° 각도로 빔 포밍이 가능하며, 듀얼 밴드 능동형 태그의 밧데리의 교체 없이 무선으로 충전하는, 철도 차량 부품 및 차량관리 등의 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템을 제공하는 것이다An object of the present invention for solving the above problems is that 900MHz / 2.4GHz dual band having four directional channels in the east-west, north-west direction that the existing 900MHz RFID system and 2.4GHz RFID system is used separately for railway vehicle parts and vehicle management It is equipped with an integrated RFID reader, a dual band active tag with a wireless charging function attached to the railroad parts and the underside of the vehicle, and a tag collector for managing the active tag.It can be beam-formed at a 90 ° angle by the system rotor and the motor. It provides a dual band integrated RFID system for smart operation management such as railway vehicle parts and vehicle management, which is wirelessly charged without replacing the battery of the dual band active tag.
본 발명의 목적을 달성하기 위해, 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템은 야드 환경, 창고 환경 및 철도차량 하부에서 능동형 태그를 관리하도록, 4개의 방향성 채널의 각각의 방향으로 2.4GHz 안테나와 900MHz 안테나를 각각 구비하여 듀얼밴드 능동형 태그를 인식하기 위한 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템; 900MHz 대역에서 무선으로 충전하여 DC전압을 공급하는 무선 충전 기능을 가지는 듀얼밴드 능동형 태그; 및 무선 충전 기능을 가지는 태그 수집기를 포함하며, 상기 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템은 빔 포밍으로 음영지역의 태그를 인식하도록 90° 각도로 회전하는 시스템 회전체, 및 상기 시스템 회전체를 90° 각도로 회전시키는 모터를 구비한다. In order to achieve the object of the present invention, a dual-band integrated RFID system for smart operation management, 2.4GHz antenna and 900MHz in each direction of the four directional channels, so as to manage the active tag in the yard environment, warehouse environment and railroad vehicle underneath A 900 MHz / 2.4 GHz dual band integrated RFID reader system having antennas each having a directional channel for recognizing a dual band active tag; Dual-band active tag having a wireless charging function to supply a DC voltage by charging wirelessly in the 900MHz band; And a tag collector having a wireless charging function, wherein the 900 MHz / 2.4 GHz dual band integrated RFID reader system rotates the system rotating body at a 90 ° angle to recognize a tag in a shadowed area by beam forming, and the system rotating body. It has a motor that rotates at a 90 ° angle.
상기 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템은 동서 남북 방향으로 4각면으로 방형성 채널이 형성된 경우, 4개의 섹터를 가지고 일체형으로 형성된 2.4GHz 방향성 안테나 및 900MHz 방향성 안테나; 동서남북 방향(A 지역, B지역, C 지역, D지역)으로 각각 일체형으로 동시에 구비된 900MHz 안테나를 RF 케이블로 연결되는 4채널 900MHz RFID 리더; 동서남북 방향(A 지역, B지역, C 지역, D지역)으로 각각 일체형으로 동시에 구비된 2.4GHz 안테나를 RF 케이블로 연결되는 4채널 2.4GHz RFID 리더; 상기 4채널 900MHz RFID 리더와 상기 4채널 2.4GHz RFID 리더와 연결되고, 리더 동작여부 판단용 수동형 태그와 센서와 같은 외부인터페이스 관리 및 전원관리용 컨트롤 보드를 포함하고, 하나의 레이돔에 2.4GHz/900MHz 듀얼 밴드 일체형으로 구성된다. The 900 MHz / 2.4 GHz dual band integrated RFID reader system having the directional channel includes: a 2.4 GHz directional antenna and a 900 MHz directional antenna integrally formed with four sectors when a rectangular channel is formed in four sides in the east-west and north-south directions; A four-channel 900MHz RFID reader connected to the east-west-south direction (region A, region B, region C, region D) by an RF cable to each of the 900 MHz antennas that are integrally provided simultaneously; A four-channel 2.4 GHz RFID reader connecting the 2.4 GHz antennas which are simultaneously provided in one piece in the east-west-south direction (region A, region B, region C, region D) simultaneously with an RF cable; It is connected to the 4-channel 900MHz RFID reader and the 4-channel 2.4GHz RFID reader, and includes a control board for external interface management and power management such as a passive tag and a sensor for determining whether the reader is operating, and a 2.4GHz / 900MHz in one radome. Dual band integrated
상기 방향성 채널을 가지는 2.4GHz/900MHz 듀얼밴드 일체형 RFID 리더 시스템의 방향성 채널의 지역구분을 위해 방향성을 극대화하는 방식은 해당 지역을 향하는 안테나의 이득(gain)을 높이고 빔을 좁히는 방법과, 안테나 사이의 격리도를 극대화하는 방법을 사용하며, 방향성을 극대화하기 위하여 sector1과 sector 2와의 공간적인 격리도를 최대로 하기 위해 안테나에 이중반사판을 사용하는 것을 특징으로 한다. The method of maximizing the directionality for region division of the directional channel of the 2.4 GHz / 900 MHz dual band integrated RFID reader system having the directional channel increases the gain of the antenna directed to the region and narrows the beam, and between the antennas. The method of maximizing the isolation is used, and the dual reflector is used in the antenna to maximize the spatial isolation between sector 1 and sector 2 in order to maximize the direction.
상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 소형 2.4GHz/900MHz 듀얼 밴드 안테나와 임피던스 정합회로, 2.4GHz/900MHz 듀얼밴드 동시처리가 가능한 RF 신호처리 회로를 포함한다.The dual band active tag having the wireless charging function includes a small 2.4 GHz / 900 MHz dual band antenna, an impedance matching circuit, and an RF signal processing circuit capable of simultaneously processing the 2.4 GHz / 900 MHz dual band.
상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 900 MHz 및 2.4 GHz 듀얼 밴드 안테나; 900 MHz 및 2.4 GHz 주파수에서 공진되도록 임피던스 정합을 하며, 900MHz 태그 칩에 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력이 되도록 하는 임피던스 매칭 회로; 900 MHz 태그로 동작하는 900MHz 태그 칩; 900MHz AC 전압 신호만 통과시키고 DC 전압 신호를 차단하는 DC전원차단부; 900MHz AC 전압 신호(RF 신호)를 RFtoDC 변환기를 사용하여 DC 전압으로 변환하여 부스트 변환기(Boost Converter)에 의해 활성화된 슈퍼커패시터(Super Capacitor)를 무선으로 충전된 DC전압을 공급하여 슈퍼커패시터에 충전시키고 전압 및 전류 모니터링부 및 외부 에너지 컨트롤러에 의해 무선으로 충전되는 DC 전압을 모니터링하여 과충전을 방지하며, 밧데리 없이 사용가능하도록 900MHz 태그 칩과 2.4 GHz 태그의 송수신부로 DC전압을 공급하는 무선 충전부; 2.4GHz RF 신호를 통과시키고 900MHz RF 신호를 차단하는 900MHz RF 신호차단부; 및 2.4GHz 무선 송수신 모듈을 통해 2.4GHz RF 신호를 수신받아 2.4GHz 태그를 작동시키는 마이크로 프로세서 모듈로 제공하여 태그를 동작시켜 센서 데이타를 제공하는 2.4GHz 태그 송수신부; 및 2.4GHz 태그 송수신부로부터 센서 데이타를 수신받는 센서를 포함한다. The dual band active tag having the wireless charging function includes 900 MHz and 2.4 GHz dual band antennas; An impedance matching circuit for performing impedance matching to resonate at 900 MHz and 2.4 GHz frequencies, having a signal intensity of at least -14 dBm or higher and inputting a signal intensity of 30 dBm or lower to a 900 MHz tag chip; A 900 MHz tag chip operating with a 900 MHz tag; A DC power cut-off unit which passes only a 900 MHz AC voltage signal and cuts a DC voltage signal; The 900MHz AC voltage signal (RF signal) is converted to DC voltage using the RFtoDC converter to charge the supercapacitor by supplying the DC voltage charged wirelessly to the supercapacitor activated by the boost converter. A wireless charging unit for monitoring a DC voltage wirelessly charged by the voltage and current monitoring unit and an external energy controller to prevent overcharge, and supplying a DC voltage to a transceiver of the 900 MHz tag chip and the 2.4 GHz tag so that the battery can be used without a battery; 900MHz RF signal blocking unit for passing the 2.4GHz RF signal and blocking the 900MHz RF signal; And a 2.4 GHz tag transceiver configured to receive a 2.4 GHz RF signal through a 2.4 GHz wireless transmit / receive module and provide a sensor data by operating the tag by providing the microprocessor module to operate a 2.4 GHz tag. And a sensor receiving sensor data from the 2.4GHz tag transceiver.
상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 소형 듀얼 밴드 안테나와 900MHz 수동형 태그부와 무선충전회로부와 2.4GHz 능동형 태그부로 구성되고, 상기 900MHz 수동형 태그부와 상기 듀얼밴드 안테나는 소형이면서 외부환경에 영향을 최소화하는 격자형 마이크로 스트립 안테나 구조와 간접급전 미앤더 타입 마이크로 스트립 안테나 구조를 사용하며, 듀얼밴드 안테나에 수신되는 신호를 임피던스 정합회로를 통해 임피던스 정합을 이루고 무선충전회로부에서 충전된 전력을 사용하고, 안테나에서 입력된 신호는 900MHz 태그 칩과 무선충전부로 그 신호가 들어가며, 900MHz 태그 칩은 리더에서 송신된 신호의 정보를 사용하고, 무선충전부에서는 신호의 세기를 가지고 무선충전을 하며, 900MHz 태그 칩은 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력이 되도록 임피던스 정합회로를 구현하는 것을 특징으로 한다. The dual band active tag having the wireless charging function includes a small dual band antenna, a 900 MHz passive tag unit, a wireless charging circuit unit, and a 2.4 GHz active tag unit, and the 900 MHz passive tag unit and the dual band antenna are small and affect the external environment. Lattice type microstrip antenna structure and indirect feeding meander type microstrip antenna structure are used to minimize the impedance.The signal received by the dual band antenna is matched through the impedance matching circuit and the power charged by the wireless charging circuit part is used. The signal input from the antenna enters into the 900MHz tag chip and the wireless charging unit, and the 900MHz tag chip uses the information of the signal transmitted from the reader, and the wireless charging unit performs the wireless charging with the signal strength, and the 900MHz tag chip Must have a signal strength of at least -14 dBm And it is characterized by implementing an impedance matching circuit so that the signal strength of up to 30dBm or less is input.
상기 무선 충전 기능을 가지는 태그 수집기는 캐비티 형태의 케이스와 무선충전용 900MHz 안테나와 태그 재 발행용 2.4GHz/900MHz 듀얼밴드 안테나와 2.4GHz/900MHz 리더와 안테나 레이돔으로 구성되고, 전원 공급 장치 이외에 동작 버턴이나 충전량 표시 LED와 스피커 등의 외부 인터페이스는 프로그램으로 동작되며, 그 이유는 철도와 같은 외부환경에 사용하기 때문에 먼지와 기름때와 같은 부분으로 인한 장비의 고장률을 최소화하기 위함이며, 상기 캐비티 형태의 케이스는 4각면 또는 6각면 또는 8각면으로 형성되고, 면의 개수는 4각면이나 6각면 또는 8각면으로 해도 무관하며 난반사가 많이 일어나는 형태로 하며, 각각의 캐비티 내부 면에 무선충전용 900MHz 안테나를 포함하며, The tag collector having the wireless charging function includes a cavity-type case, a 900 MHz antenna for wireless charging, a 2.4 GHz / 900 MHz dual band antenna for tag reissue, a 2.4 GHz / 900 MHz reader and an antenna radome, and an operation button in addition to a power supply. In addition, the external interface, such as the charge level display LED and the speaker, is operated by a program. The reason for this is to minimize the failure rate of the equipment due to parts such as dust and oil because it is used in an external environment such as a railway. Is formed of four sides, six sides, or eight sides, and the number of sides is not related to four sides, six sides, or eight sides, and forms a lot of diffuse reflection. Each cavity includes a 900 MHz antenna for wireless charging. ,
상기 무선충전용 900MHz 안테나는 캐비티 내에 수많은 태그가 일괄적으로 투입되기 때문에 능동형 태그를 충전하는데 동일한 충전량을 가지기 위해 균일한 전계분포를 가지는 안테나를 사용하며, The 900MHz antenna for wireless charging uses an antenna having a uniform electric field distribution in order to have the same amount of charge to charge an active tag because a large number of tags are put in a cavity.
상기 태그 재 발행용 듀얼밴드(2.4GHz/900MHz) 안테나는 소형이면서 스위치 기능을 가지고 태그가 위치하는 곳에서만 인식하고 그 외의 지역에서는 인식되지 않는 선택적 인식영역을 가지는 선반형 안테나의 특성을 가지며, 2.4GHz/900MHz 듀얼밴드 안테나에서 스위치 기능을 제공하여 900MHz 태그정보를 입력할 때 900MHz 태그 정보를 900MHz RFID 리더에서 신호를 송출하고 2.4GHz 리더에서 신호를 송출하지 않는 것을 특징으로 한다. The dual-band (2.4GHz / 900MHz) antenna for tag reissue has the characteristics of a shelf antenna having a small and switch function, a selective recognition area recognized only where a tag is located, and not recognized elsewhere, and 2.4. The switch function is provided in the GHz / 900MHz dual-band antenna, and when the 900MHz tag information is input, the 900MHz tag information is transmitted from the 900MHz RFID reader and the signal is not transmitted from the 2.4GHz reader.
상기 무선 충전 기능을 가지는 태그 수집기는 상부 면의 뚜껑이 연결고리를 기준으로 개폐되는 구조이며, 바닥면과 윗면 모두를 금속판으로 구성되며, 내부면은 플라스틱으로 형성되며, 외부면은 전자파를 차단하기 위해 금속을 사용하며, 캐비티 형태의 케이스와 무선충전용 900MHz 안테나 및 2.4GHz/900MHz 안테나와 2.4GHz/900MHz 리더와 안테나 레이돔으로 구성되고, 상기 캐비티 형태의 케이스는 4각면 또는 6각면으로 각각의 면에 무선충전용 900MHz 안테나를 포함하며, 바닥면과 윗면 모두를 금속판으로 구성하고, 캐비티 내부의 전자파는 캐비티 내부에서만 동작하고 전자파 누설을 없게 하며, 상기 캐비티 내부는 난반사의 원리를 이용하여 안테나에서 방사된 전자파는 캐비티 내에서 지속적으로 난반사가 일어나 여러 개의 능동형 태그를 동시에 충전할 수 있게 하고, 상기 태그 수집기에서 캐비티 내부에 사용되는 900MHz RFID 신호는 태그에 정보를 읽는데 사용되는 것이 아니라 상기 능동형 태그를 충전하는데 사용되기 때문에 금속면에서 일어나는 난반사의 신호가 노이즈로 작용되는 것이 아니라 무선충전용 신호원으로 사용되는 것을 특징으로 한다. The tag collector having the wireless charging function has a structure in which the lid of the upper surface is opened and closed based on the connection ring, and both the bottom and the upper surface are made of metal plates, the inner surface is formed of plastic, and the outer surface blocks the electromagnetic waves. It is made of metal, and consists of a cavity-type case, a 900MHz antenna for wireless charging, a 2.4GHz / 900MHz antenna, a 2.4GHz / 900MHz reader and an antenna radome, and the cavity-shaped case is quadrilateral or hexagonal. It includes a 900MHz antenna for wireless charging, and consists of a metal plate on both the bottom and the top, the electromagnetic waves inside the cavity operates only inside the cavity to prevent electromagnetic leakage, the inside of the cavity radiates from the antenna using the principle of diffuse reflection Electromagnetic waves are constantly diffused within the cavity to charge multiple active tags simultaneously. Since the 900 MHz RFID signal used inside the cavity in the tag collector is used to charge the active tag rather than to read information on the tag, the signal of the diffuse reflection occurring on the metal surface is not acted as a noise but is wirelessly charged. Characterized in that it is used as a signal source.
본 발명에 따른 스마트 운영 관리를 위한 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템은 4채널의 방향성을 가지는 RFID 리더시스템으로 수동형 및 능동형 태그가 부착되어 있는 사물이나 사람의 무선인식 뿐만 아니라 위치파악과 이동경로를 확인할 수가 있다. 뿐만 아니라 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템을 구현하여 공간적인 부분과 시스템 설치시 비용절감을 효과를 볼 수 있다. 충전기능을 가지는 듀얼밴드 능동형 태그는 기존 능동형 태그를 사용 시 밧데리 교체로 인한 불편함과 생명주기의 단점을 극복할 수 있고, RFID의 제한된 인식영역에 대한 문제점을 극복하여 근거리 영역 및 원거리영역에서 동시에 사용가능하다. 충전기능을 가지는 태그 수집기는 태그의 보관 시 자동으로 충전을 할 수 있다. 900MHz / 2.4GHz dual-band integrated RFID system for smart operation management according to the present invention is a four-way directional RFID reader system, as well as the location and movement path as well as the wireless recognition of objects and people with passive and active tags attached You can check. In addition, by implementing a 900MHz / 2.4GHz dual-band integrated RFID system, it is possible to save space in the space part and system installation. Dual-band active tag with charging function can overcome the inconvenience and life cycle shortcomings due to battery replacement when using existing active tag, and overcomes the problem of limited recognition area of RFID at the same time in near and far areas It can be used. The tag collector with charging function can automatically charge the tag when it is stored.
또한, 이러한 RFID 시스템은 철도차량 부품검수 장소 및 철도차량 및 자동차 야적장과 같은 야드 환경, 철도 차량 부품, 자동차 부품, 항공 부품 창고와 같은 관리부품과 이동물품과 사람의 이동이 많은 창고 환경과 같은 근거리 영역과 원거리 영역을 동시에 인식해야 하는 환경에 부품의 효율적인 관리와 RFID 태그를 부착한 사물의 움직임과 위치를 파악하기 위한 것이다. In addition, these RFID systems can be used in near-road environments, such as rail vehicle component inspection sites and yard environments such as railroad vehicles and car yards, and management parts such as railroad vehicle parts, automotive parts, and aerospace parts warehouses, and moving goods and warehouse environments with high mobility. It is for the efficient management of parts in the environment where the area and the remote area should be recognized at the same time and the movement and location of the object with the RFID tag.
또한, 철도차량하부에 능동형 태그를 관리하는 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 RFID 일체형 리더와 철도부품 및 차량하부에 부착하는 900MHz 대역에서 무선충전기능을 가지는 듀얼밴드 RFID 능동형 태그와 능동형 태그를 관리하는 태그 수집기를 개발함으로써, 이러한 RFID 태그를 사용하여 창고의 입출고, 서고관리, 출입통제 등을 하기 위해 움직임이 자유로운 재물조사용 안테나와 고정된 선반안테나로 물품에 부착된 태그의 태그정보를 인식하여 물품의 재고를 조사하는 RFID 이동형 재고조사기에 사용될 수 있다. In addition, 900MHz / 2.4GHz dual-band RFID integrated reader with a directional channel to manage the active tag under the railroad car and dual-band RFID active tag and active tag with wireless charging function in the 900MHz band attached to the railroad parts and the vehicle bottom. By developing a tag collector to manage, the RFID tag is used to recognize the tag information of the tag attached to the goods with the freely moving antenna and fixed shelf antenna for warehouse entry, warehouse management, and access control. Can be used in RFID mobile inventory checker to check the inventory of the goods.
또한, 본 발명은 물류창고, 자재창고 및 창고형 대형매장 등과 같은 곳에 적재된 태그가 부착된 물품에 대하여 길이가 가변되는 재물조사용 안테나 또는 고정된 선반 안테나에 의해 쉽게 태그정보를 획득하는 효과가 있고, 상기 획득된 태그의 정보를 인터넷 통신망을 통해 서버에 전송하여 분석된 태그정보를 열람할 수 있는 효과가 있다.In addition, the present invention has an effect of easily obtaining the tag information by the antenna for the inspection of the variable length or fixed shelf antenna for the article attached to the tag, such as logistics warehouse, material warehouse, warehouse type large store, etc. The tag information may be transmitted to a server through an internet communication network to view the analyzed tag information.
도 1은 본 발명에 따른 스마트 운영 관리를 위한 무선 충전 기능을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템 구성도이다. 1 is a configuration diagram of a 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management according to the present invention.
도 2는 4채널 2.4GHz 리더/4채널 900MHz 리더와 2.4GHz/900MHz 4개의 섹터를 가지는 방향성 안테나와 리더 동작 여부 판단용 수동형 태그와 외부인터페이스 관리 및 전원관리용 컨트롤 보드와 시스템 회전체로 구성되는 방향성을 가지는 듀얼밴드 일체형 RFID 리더 시스템의 구성도이다. FIG. 2 shows a 4-channel 2.4 GHz reader and a 4-channel 900 MHz reader, a 2.4 GHz / 900 MHz directional antenna, a passive tag for determining whether the reader is operating, a control board for external interface management and power management, and a system rotating body. A configuration diagram of a dual band integrated RFID reader system having directionality.
도 3은 본 발명의 일 실시예에 따른 동서남북 방향으로 A지역, B지역, C 지역, D 지역을 커버하는 방향성을 가지는 900MHz/2.4GHz 듀얼 밴드 일체형 RFID 시스템을 적용한 예를 나타낸 도면이다. FIG. 3 is a diagram illustrating an example of applying a 900 MHz / 2.4 GHz dual band integrated RFID system having directionality covering regions A, B, C, and D in the east, west, north, and north directions according to an embodiment of the present invention.
도 4는 방향성을 가지는 900MHz/2.4GHz 듀얼 밴드 일체형 RFID 시스템의 빔 폭과 회전반경을 나타낸 도면이다.FIG. 4 is a diagram illustrating a beam width and a rotation radius of a 900MHz / 2.4GHz dual band integrated RFID system having directivity.
도 5는 안테나의 내부 모습 및 레이돔의 일체된 모양을 나타낸 사진이다. Figure 5 is a photograph showing the internal appearance of the antenna and the integrated shape of the radome.
도 6은 하나의 레이돔에 덮어쓰어진 4채널 방향성을 가지는 듀얼밴드 일체형 RFID 리더 시스템과 듀얼밴드 능동형 태그를 나타낸 도면이다. FIG. 6 is a diagram illustrating a dual band integrated RFID reader system and a dual band active tag overlaid on one radome.
도 7은 본 발명에 따른 무선 충전 기능을 가지는 듀얼밴드 능동형 태그의 구성도이다. 7 is a block diagram of a dual band active tag having a wireless charging function according to the present invention.
도 8은 본 발명에 따른 무선 충전 기능을 가지는 태그 수집기를 나타낸 도면이다. 8 is a diagram illustrating a tag collector having a wireless charging function according to the present invention.
도 9는 무선 충전 기능을 가지는 태그 수집기의 동작 절차를 나타낸 순서도이다. 9 is a flowchart illustrating an operation procedure of a tag collector having a wireless charging function.
본 발명의 목적, 특징, 장점들은 첨부한 도면들을 참조하여 상세한 설명과 바람직한 실시예로부터 더욱 명백해질 것이다. 본 명세서의 각 도면의 구성요소들에 참조번호를 부가함에 있어서, 동일한 구성 요소들에 한해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 번호를 부여하고 있음에 유의해야 한다. 또한, 제1, 제2 등의 용어는 다양한 구성요소들을 설명하는데 사용될 수 있지만, 상기 구성요소들은 상기 용어들에 의해 한정되지 않는다. 상기 용어들은 하나의 구성요소를 다른 구성요소로부터 구별하는 목적으로만 사용된다. 또한, 본 발명을 설명함에 있어서, 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.The objects, features, and advantages of the present invention will become more apparent from the detailed description and the preferred embodiments with reference to the accompanying drawings. In adding reference numerals to the elements of the drawings of the present specification, it should be noted that the same elements are assigned the same number as much as possible even if displayed on different drawings. In addition, terms such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. In addition, in describing the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 발명의 구성 및 동작을 상세하게 설명한다. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail the configuration and operation of the invention.
본 발명은 철도 차량용 RFID 시스템에 적용가능하도록 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템을 제시하고, ISO/IEC 18000-6C 및 ISO/IEC 24730 국제표준을 준용하는 900MHz/2.4GHz 듀얼 밴드 일체형 Active RFID 시스템을 개발하여 듀얼 밴드 동시 처리가 가능한 RF 신호 처리와 신호대 잡음비를 높이기 위해 독립적인 RF 회로를 설계하여 무선 충전기능을 가지는 능동형 태그를 제공한다.The present invention proposes a 900MHz / 2.4GHz dual-band integrated RFID system to be applicable to the RFID system for railroad cars, 900MHz / 2.4GHz dual-band integrated Active RFID system that conforms to the ISO / IEC 18000-6C and ISO / IEC 24730 international standards In order to increase the signal-to-noise ratio, the RF signal processing capable of dual band simultaneous processing and the design of an independent RF circuit provide an active tag with wireless charging function.
이를 위해 태그를 철도차량에 부착하여 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더와의 인식거리(20m, 50m, 100m, 150m, 200m, 300m)를 측정하였다. To this end, tags were attached to railroad cars and the recognition distances (20m, 50m, 100m, 150m, 200m, 300m) with 900MHz / 2.4GHz dual band integrated RFID readers with directional channels were measured.
도 1은 본 발명에 따른 스마트 운영 관리를 위한 무선 충전 기능을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템 구성도이다. 1 is a configuration diagram of a 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management according to the present invention.
본 발명의 스마트 운영 관리를 위한 무선 충전 기능을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템은 철도차량 부품검수 장소와 철도차량 및 자동차 야적장과 같은 야드 환경, 창고 환경 및 철도차량 하부에서 능동형 태그를 관리하도록, 방향성 채널의 각각의 방향으로 2.4GHz 안테나와 900MHz 안테나를 각각 구비하여 듀얼밴드 능동형 태그를 인식하기 위한 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템(100); 900MHz 대역에서 무선으로 충전하여 DC전압을 공급하는 무선 충전 기능을 가지는 듀얼밴드 능동형 태그(200); 및 무선 충전 기능을 가지는 태그 수집기(300)로 구성되며, 상기 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템은 음영지역의 태그를 인식하도록 빔포밍으로 90° 각도로 회전하는 시스템 회전체 및 모터를 구비하는 것을 특징으로 한다. The 900MHz / 2.4GHz dual band integrated RFID system having a wireless charging function for smart operation management of the present invention manages active tags in yard environments such as rail vehicle parts inspection sites, railroad cars, and car yards, warehouse environments, and railroad cars. A 900 MHz / 2.4 GHz dual band integrated RFID reader system 100 having a directional channel for recognizing a dual band active tag, each having a 2.4 GHz antenna and a 900 MHz antenna in each direction of the directional channel; Dual-band active tag 200 having a wireless charging function for supplying a DC voltage by charging wirelessly in the 900MHz band; And a tag collector 300 having a wireless charging function, wherein the 900 MHz / 2.4 GHz dual band integrated RFID reader system includes a system rotating body and a motor rotating at a 90 ° angle by beamforming to recognize a tag in a shadow area. Characterized in that.
상기 시스템은 철도 차량 스마트 운영 관리를 위한 무선 충전 기능을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템으로 사용되고, 이 RFID 시스템은 야드 환경 및 창고 환경과 같은 근거리 영역과 원거리영역을 인식해야하는 환경에 부품의 효율적인 관리와 RFID 태그를 부착한 사물의 움직임과 위치 파악을 위한 것이다.The system is used as a 900 MHz / 2.4 GHz dual band integrated RFID system with wireless charging function for the management of railway vehicle smart operation, and this RFID system is used for the part that needs to recognize near and far areas such as yard environment and warehouse environment. It is for efficient management and movement and location of things with RFID tags.
1. 방향성을 가지는 듀얼밴드 일체형 RFID 리더 시스템1. Dual band integrated RFID reader system with directivity
도 2는 4채널 2.4GHz 리더/4채널 900MHz 리더와 2.4GHz/900MHz 4개의 섹터를 가지는 방향성 안테나와 리더 동작 여부 판단용 수동형 태그와 외부인터페이스 관리 및 전원관리용 컨트롤 보드와 시스템 회전체로 구성되는 방향성을 가지는 듀얼밴드 일체형 RFID 리더 시스템의 구성도이다. FIG. 2 shows a 4-channel 2.4 GHz reader and a 4-channel 900 MHz reader, a 2.4 GHz / 900 MHz directional antenna, a passive tag for determining whether the reader is operating, a control board for external interface management and power management, and a system rotating body. A configuration diagram of a dual band integrated RFID reader system having directionality.
방향성을 가지는 2.4GHz/900MHz 듀얼밴드 일체형 RFID 리더 시스템은 4채널 2.4GHz 리더/4채널 900MHz 리더와 2.4GHz/900MHz 4개의 섹터를 가지는 방향성 안테나와 리더 동작 여부 판단용 수동형 태그와 외부인터페이스 관리 및 전원관리용 컨트롤 보드와 시스템 회전체로 구성되고, 이렇게 구성된 시스템이 하나의 레이돔에 일체형으로 구성된다. The directional 2.4GHz / 900MHz dual band integrated RFID reader system has a 4-channel 2.4GHz reader / 4 channel 900MHz reader and a 2.4GHz / 900MHz 4-sector directional antenna and passive tags for determining whether the reader is operating, external interface management and power supply. It consists of an administrative control board and a system rotor, and this system is integrated into one radome.
2.4GHz RFID 리더는 4채널의 RF 송수신 포드로 구성되고, RF CABLE로 4개 안테나에 각각 연결되어 동작된다. 2.4GHz RFID 리더는 원거리 영역에서의 능동형 태그가 부착된 사람 및 부품 및 물자 등을 무선 인식하여 위치파악 및 이동경로를 관리하는데 사용된다. 2.4GHz RFID 리더는 4채널이 동시에 동작을 하고 채널별 선택적으로 동작을 할 수 있게 구현한다. 경우에 따라 섹터별 빔 포밍 기술은 포함을 하는 경우가 있다.The 2.4 GHz RFID reader consists of four channels of RF transmit and receive pods, each connected to four antennas via an RF cable. The 2.4GHz RFID reader is used to manage location and movement paths by wirelessly recognizing people, parts, and materials with active tags in remote areas. The 2.4 GHz RFID reader enables four channels to operate simultaneously and selectively for each channel. In some cases, a sector-by-sector beamforming technique may be included.
900MHz RFID 리더는 4채널의 RF 송수신 포트로 구성되고, RF CABLE로 4개의 안테나에 연결되어 동작된다. 900MHz RFID 리더는 근거리 영역에서 수동형 태그가 부착한 부품 및 사람 및 물자를 무선 인식 및 무선충전기능을 가지는 능동형 태그의 무선 충전용으로 사용된다. 900MHz RFID 리더는 4채널이 동시에 동작을 하고 채널별 선택적으로 동작할 수 있게 구현한다. 경우에 따라 섹터별 빔 포밍 기술은 포함하는 경우가 있다.The 900MHz RFID reader consists of four channels of RF transmission and reception ports, and is connected to four antennas by RF cable. The 900MHz RFID reader is used for wireless charging of active tags with wireless recognition and wireless charging of parts, people and materials with passive tags in the near field. The 900MHz RFID reader enables four channels to operate simultaneously and selectively for each channel. In some cases, a sector-by-sector beamforming technique may be included.
두 개의 RFID 리더를 4채널로 분리하여 방향성을 가지는 이유는 태그가 부착이 된 사람 및 사물의 관리 및 실시간 위치파악 뿐만 아니라 사람과 사물의 이동 경로 파악함으로서 사람과 사물의 움직임을 파악함으로서 실시간 위치에 대한 부분까지 관리할 수가 있다. 만약 4개 이상의 방향성을 판단하려고 구현하면 각각의 방향에 대한 정확한 분리가 어렵기 때문에, 본 발명에서는 4채널을 동서남북과 같은 4개의 방향으로 구현한다. Two RFID readers are divided into four channels and have directionality as well as management of tagged people and things and real-time location, as well as movement of people and things to identify movements of people and things. Can manage up to. If it is implemented to determine the four or more directions, since it is difficult to accurately separate the respective directions, the present invention implements four channels in four directions, such as east, west, north and south.
2.4GHz/900MHz 4개의 섹터를 가지는 방향성 안테나는 동서남북 방향 중에서 하나의 방향에 900MHz 단일 안테나와 2.4GHz 2x2 배열 안테나와 리더동작여부를 판단하는 듀얼밴드 수동형 태그로 구성한다. 2.4GHz 2x2 배열 안테나는 상부에 위치하고 하부에 900MHz 단일 안테나로 구성한다. 이것은 기존 RFID 리더가 4채널을 사용하고 4개 이상의 섹터를 사용할 경우 편파에 대한 격리도와 방향적인 부분을 분리하기 어렵기 때문이다. 리더 동작여부를 판단하는 수동형 듀얼밴드 태그는 철도환경과 같은 고 신뢰성이 요구되는 환경에서 리더동작여부를 판단하는 외부인터페이스를 둘 수가 없기 태그를 안테나에 둠으로써 RFID 리더의 동작여부를 판단한다.The 2.4GHz / 900MHz directional antenna with four sectors consists of a 900MHz single antenna, a 2.4GHz 2x2 array antenna, and a dual band passive tag that determines whether the reader operates in one of the north-west, north-west directions. The 2.4GHz 2x2 array antenna is located at the top and consists of a 900MHz single antenna at the bottom. This is because when the existing RFID reader uses 4 channels and uses 4 or more sectors, it is difficult to separate the isolation and the directional part from polarization. Passive dual band tag that determines whether the reader operates or not can not have an external interface to determine whether the reader operates in an environment where high reliability is required, such as a railway environment, and determines whether the RFID reader operates by placing a tag on the antenna.
예를 들면, 4개의 섹터로 구성된 경우, 2.4GHz/900MHz 4개의 섹터를 가지는 방향성 안테나는 하나의 방향에 900MHz 단일 안테나와 2.4GHz 2x2 배열 안테나와 RFID 리더동작여부를 판단하는 듀얼밴드 수동형 태그로 구성된다. 2.4GHz 2x2 배열 안테나는 상부에 위치하고, 하부에 900MHz 단일 안테나로 구성한다. 이것은 기존 RFID 리더가 4채널을 사용하고 4개 이상의 섹터를 사용할 경우 편파에 대한 격리도와 방향적인 부분을 분리하기가 어렵기 때문이다. RFID 리더 동작여부를 판단하는 듀얼밴드 수동형 태그는 철도환경과 같은 고 신뢰성이 요구되는 환경에서 RFID 리더동작여부를 판단하는 외부인터페이스를 둘 수가 없기 태그를 안테나에 둠으로써 RFID 리더의 동작여부를 판단한다.For example, in the case of 4 sectors, a directional antenna having 4 sectors of 2.4 GHz / 900 MHz consists of a single 900 MHz antenna, a 2.4 GHz 2x2 array antenna, and a dual band passive tag that determines whether the RFID reader operates in one direction. do. The 2.4GHz 2x2 array antenna is located at the top and consists of a single 900MHz antenna at the bottom. This is because when the existing RFID reader uses 4 channels and uses 4 or more sectors, it is difficult to separate the isolation and the directional part against polarization. The dual-band passive tag that determines the operation of the RFID reader can not have an external interface to determine the operation of the RFID reader in an environment requiring high reliability such as a railway environment. .
외부 인터페이스는 전원과 통신선만 외부로 연결된다. 다른 인터페이스는 고 신뢰성과 제품의 안전성을 위해 모두 제거를 한다.The external interface connects only the power and communication lines to the outside. All other interfaces are removed for high reliability and product safety.
시스템 회전체는 4방향으로 2.4GHz/900MHz 듀얼밴드 RFID 신호를 송출했는데 그 방향으로 태그가 존재를 하지 않을 때, 안테나의 방사 패턴의 빔폭에 맞게 회전을 하여 미인식되는 태그를 인식하여 어느 방향에 있는지 확인하는데 사용된다. 회전체의 회전속도는 1차 회전을 할 때 태그 인식 값과 2차 회전 값을 분리하여 저장하여 태그의 위치를 정확하게 계산한다. When the system rotating body transmits 2.4GHz / 900MHz dual band RFID signal in 4 directions, but no tag exists in that direction, it rotates according to the beam width of the radiation pattern of the antenna and recognizes the unrecognized tag in any direction. It is used to check if it is present. The rotational speed of the rotor is calculated by separating the tag recognition value and the secondary rotation value during the first rotation.
이런 방향성을 가지는 2.4GHz/900MHz 듀얼밴드 일체형 RFID 리더 시스템은 근거리 및 원거리 지역에서 무선인식을 해야 하는 환경과 사물 및 사람의 이동경로와 많은 양이 존재할 경우 용이하다. 특히 철도환경과 같은 이동경로를 판단해야 하는 환경에서 최적의 시스템이다. This directional 2.4 GHz / 900 MHz dual band integrated RFID reader system is easy when there is a large amount of environment and objects and people's movement path that requires wireless recognition in near and far areas. Especially, it is the best system in the environment that needs to judge the movement route such as the railway environment.
도 3에 도시된 바와 같이, 태그의 이동경로를 나타내고 있다. A지역의 태그가 A지역으로 이동할 경우와, A 지역의 태그가 B지역으로 이동하는 경우(A 지역 태그가 D지역으로 이동하는 경우와 동일)와, A 지역의 태그가 B 지역으로 이동해서 C지역으로 이동할 경우로 나눈다. 이 태그의 이동은 부품관리에 사용되며 주요장비 및 부품을 분실이나 재사용 시 시간 단축의 효과를 볼 수 있다. As shown in FIG. 3, the movement path of the tag is shown. When the tag in area A moves to area A, the tag in area A moves to area B (same as when the area A tag moves to area D), and the tag in area A moves to area B, Divide by region to move. The movement of this tag is used for parts management, and it can reduce the time when major equipment and parts are lost or reused.
도 3은 본 발명의 일 실시예에 따른 동서남북 방향으로 A지역, B지역, C 지역, D 지역을 커버하는 방향성을 가지는 900MHz/2.4GHz 듀얼 밴드 일체형 RFID 시스템을 적용한 예를 나타낸 도면이다. FIG. 3 is a diagram illustrating an example of applying a 900 MHz / 2.4 GHz dual band integrated RFID system having directionality covering regions A, B, C, and D in the east, west, north, and north directions according to an embodiment of the present invention.
상기 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템의 방향성 채널의 지역구분을 위한 즉 방향성을 극대화하기 위한 방법은 안테나의 이득(gain)을 높이고 빔을 좁히는 방법과 안테나 사이의 격리도를 극대화하는 방법이 있다. 이상적으로 한 구역(A 지역)에 커버하기 위하여 A 지역의 안테나 빔 폭은 90도이다 그러나 실제 환경에서 난반사에 의해 영역이 확대된다. 그래서 지역 구분이 되는 빔폭은 최대이면서 난반사에 의해 영역확대가 되는 부분을 최소화하는 방안을 마련해야 한다.The method for maximizing the directionality of the directional channel of the 900 MHz / 2.4 GHz dual band integrated RFID reader system having the directional channel is to increase the gain of the antenna, narrow the beam, and maximize the isolation between the antennas. There is a way. Ideally, to cover an area (area A), the antenna beam width in area A is 90 degrees but in real environments the area is enlarged by diffuse reflection. Therefore, it is necessary to devise a plan for minimizing the area that is enlarged by diffuse reflection while the beam width that is divided into regions is maximum.
방향성에 대분 부분을 극대화하기 위하여 sector 1과 sector 2와의 공간적인 격리도를 최대로 하기 위해 안테나에 이중반사판을 사용한다. 또한 태그의 편파적인 격리도를 위하여 sector 1과 sector 2의 편파를 표 1과 같이 구성한다.To maximize most of the directionality, dual reflectors are used on the antenna to maximize the spatial isolation between sector 1 and sector 2. In addition, the polarization of the sector 1 and sector 2 are configured as shown in Table 1 for the polarized isolation of the tag.
표 1
방향 sector 1 sector 2 sector 3 sector 4
편파 좌원형편파 우원형편파 좌원형편파 우원형편파
Table 1
direction sector 1 sector 2 sector 3 sector 4
partiality Left circular polarization Right circular polarization Left circular polarization Right circular polarization
도 4는 방향성을 가지는 900MHz/2.4GHz 듀얼 밴드 능동형 RFID 시스템의 빔 폭과 회전반경을 나타낸 도면이다. FIG. 4 is a diagram illustrating beam width and rotation radius of a directional 900 MHz / 2.4 GHz dual band active RFID system.
안테나 빔폭과 회전반경은 안테나의 빔폭을 기준으로 태그의 인식범위를 결정한다. The antenna beam width and rotation radius determine the recognition range of the tag based on the beam width of the antenna.
900MHz 안테나의 빔 폭은 이론적으로 안테나의 이득을 6dBi일 때 안테나의 빔폭은 60°이다. 실제 환경에서 900MHz 태그를 측정하면, 안테나의 빔폭보다 좁은 인식 범위를 가진다. 2.4GHz 안테나는 이론적으로 안테나의 이득이 12dBi 일때 안테나의 빔 폭은 30°이다. 실제 환경에서 능동형 태그를 측정할 경우, 안테나의 빔폭 보다 좁은 인식범위를 가진다. 그래서 두 시스템의 인식범위는 2.4GHz 안테나의 인식범위를 기준으로 최대 회전 반경을 90°이하로 한다. 이것은 기존 위상 배열 안테나에서 사용되는 180° 또는 360° 회전 반경을 가지는 빔 포밍 기술에 비해 기구적인 비용 절감과 전력 소모량과 데이터 처리 능력이 우수하다. 뿐만 아니라 섹터 안테나로 우선 태그정보를 받아 태그의 방향 정보를 처리하고 빔 포밍을 하면서 미인식 지역의 태그 정보를 받아 태그의 방향 정보를 처리한다. The beam width of a 900MHz antenna is theoretically 60 ° when the antenna gain is 6dBi. In a real environment, measuring 900 MHz tags has a narrower recognition range than the beam width of the antenna. 2.4GHz antennas theoretically have a beam width of 30 ° when the antenna gain is 12dBi. When the active tag is measured in a real environment, it has a narrower recognition range than the beam width of the antenna. Therefore, the recognition range of the two systems is less than 90 ° maximum rotation radius based on the recognition range of the 2.4GHz antenna. This provides better mechanical cost savings, power consumption and data processing capabilities compared to the beamforming technology with 180 ° or 360 ° turning radius used in conventional phased array antennas. In addition, the direction information of the tag is first received by the sector antenna and the direction information of the tag is processed, and the direction information of the tag is processed by receiving the tag information of the unrecognized area while performing beamforming.
도 5는 안테나의 내부 모습 및 레이돔의 일체 모양을 나타낸 사진이다. Figure 5 is a photograph showing the internal appearance of the antenna and the integrated shape of the radome.
도 6은 하나의 레이돔에 덮어쓰어진 4채널 방향성을 가지는 듀얼밴드 일체형 RFID 리더 시스템과 듀얼밴드 능동형 태그를 나타낸 도면이다.FIG. 6 is a diagram illustrating a dual band integrated RFID reader system and a dual band active tag overlaid on one radome.
동서 남북 방향으로 4채널마다 형성된 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템(100)은 하나의 안테나 레이돔(110)에 의해 덮어져 커버되며, 빔 포밍으로 음영지역의 태그를 인식하도록 90°각도로 회전하는 시스템 회전체(101), 및 상기 시스템 회전체(101)를 90°각도로 회전시키는 모터(102)를 구비하는 것을 특징으로 한다. The 900MHz / 2.4GHz dual band integrated RFID system 100 formed every four channels in the east-west and north-west directions is covered and covered by one antenna radome 110, and rotated by 90 ° to recognize the tag of the shadow area by beamforming. It characterized in that it comprises a system rotating body 101, and a motor 102 for rotating the system rotating body 101 by 90 ° angle.
2. 무선충전 기능을 가지는 능동형 태그 2. Active tag with wireless charging function
도 7은 본 발명에 따른 무선 충전 기능을 가지는 듀얼밴드 능동형 태그의 구성도이다. 7 is a block diagram of a dual band active tag having a wireless charging function according to the present invention.
무선충전기능을 가지는 듀얼밴드 능동형 태그는 소형 듀얼 밴드 안테나와 900MHz 수동형 태그부와 무선충전회로부와 2.4GHz 능동형 태그부로 구성된다.The dual band active tag having a wireless charging function consists of a small dual band antenna, a 900MHz passive tag unit, a wireless charging circuit unit, and a 2.4GHz active tag unit.
900MHz 수동형 태그 부는 듀얼밴드 안테나는 소형이면서 외부환경에 영향을 최소화하는 격자형 마이크로 스트립 안테나 구조와 간접급전 미앤더 타입 마이크로 스트립 안테나 구조를 사용한다. 2.4GHz/900MHz 듀얼밴드 안테나에 수신되는 신호를 임피던스 정합회로를 통해 900MHz 및 2.4GHz에서 공진되도록 임피던스 정합을 이루고 무선충전회로부에서 충전된 전력을 사용한다.The 900MHz passive tag section dual band antenna uses a lattice microstrip antenna structure and an indirectly fed meander type microstrip antenna structure that are small and minimize the influence on the external environment. Impedance matching is performed so that the signal received by the 2.4 GHz / 900 MHz dual band antenna is resonated at 900 MHz and 2.4 GHz through an impedance matching circuit, and the power charged by the wireless charging circuit unit is used.
안테나에서 입력된 신호는 900MHz 태그 칩과 무선충전부로 신호가 들어간다. 900MHz 태그 칩은 리더에서 송신된 신호의 정보를 사용하고 무선충전부에서는 신호의 세기를 가지고 무선충전을 한다. 900MHz 태그 칩은 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력이 되도록 임피던스 정합회로를 구현한다. The signal input from the antenna enters the 900MHz tag chip and the wireless charger. The 900MHz tag chip uses the information of the signal transmitted from the reader, and the wireless charger performs wireless charging with the signal strength. The 900MHz tag chip should have a signal sensitivity of at least -14dBm or higher and implement an impedance matching circuit so that a signal strength of up to 30dBm or less is input.
무선 충전 회로부는 안테나에서 수신된 900MHz 신호의 세기를 가지고 무선충전을 한다. 무선충전부의 구성은 역전류를 막는 DC 전원차단부(DC BLOCKS)(203)과 RF신호에서 DC로 전환하는 RFtoDC 변환기(211)와, 그리고 무선충전 저장용 슈퍼 캐피시터(super capacitor)(214)와 boost 변환기(212)와 전압 및 전류 모니터링부(213)로 구성되고, 과전압을 방지하도록 제어하는 외부 에너지 컨트롤러(217)로 구성된다. The wireless charging circuit unit performs wireless charging with the strength of the 900 MHz signal received from the antenna. The configuration of the wireless charging unit includes a DC BLOCKS 203 for preventing reverse current, an RFtoDC converter 211 for converting RF signals into DC, and a super capacitor 214 for wireless charging storage. It consists of a boost converter 212 and a voltage and current monitoring unit 213, and an external energy controller 217 to control to prevent overvoltage.
2.4GHz 능동형 태그부는 RF 송수신 모듈(231)과 마이크로 프로세서 모듈(232)과 센서(214)로 구성된다. 2.4GHz 능동형 태그부는 900MHz 무선신호의 세기로 충전된 전력을 사용하여 구동한다.The 2.4 GHz active tag unit includes an RF transceiver module 231, a microprocessor module 232, and a sensor 214. The 2.4 GHz active tag unit is driven using the charged power at the strength of the 900 MHz radio signal.
상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 The dual band active tag having the wireless charging function
900 MHz 및 2.4 GHz 듀얼 밴드 안테나; 900 MHz 및 2.4 GHz 주파수에서 공진되도록 임피던스 정합을 하며, 900MHz 태그 칩에 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력되도록 하는 임피던스 매칭 회로(201); 900 MHz 태그로 동작하는 900MHz 태그 칩(202); 900MHz AC 전압 신호만 통과시키고 DC 전압 신호를 차단하는 DC전원차단부(203); 900MHz AC 전압 신호(RF 신호)를 전파정류 회로/평활회로/정전압 레귤레이터 회로로 구성된 RFtoDC 변환기(211)를 사용하여 DC 전압으로 변환하여 부스트 변환기(Boost Converter)(212)에 의해 활성화된 슈퍼커패시터(Super Capacitor)(214)를 무선으로 충전된 DC전압을 공급하여 슈퍼커패시터(214)에 충전시키고 전압 및 전류 모니터링부(213) 및 외부 에너지 컨트롤러(217)에 의해 무선으로 충전되는 DC 전압을 모니터링하여 과충전을 방지하며, 밧데리 없이 사용가능하도록 각각 900MHz 태그 칩(202)과 2.4 GHz 태그의 송수신부(230)로 필요한 DC전압을 공급하는 무선 충전부; 그리고900 MHz and 2.4 GHz dual band antennas; An impedance matching circuit 201 for impedance matching to resonate at 900 MHz and 2.4 GHz frequencies and having a signal intensity of at least -14 dBm or more and inputting a signal intensity of 30 dBm or less to a 900 MHz tag chip; A 900 MHz tag chip 202 operating with a 900 MHz tag; A DC power cut-off unit 203 passing only the 900 MHz AC voltage signal and blocking the DC voltage signal; A supercapacitor activated by the boost converter 212 by converting a 900 MHz AC voltage signal (RF signal) into a DC voltage using an RFtoDC converter 211 composed of a full-wave rectifying circuit / smoothing circuit / constant voltage regulator circuit. Super Capacitor (214) is supplied to the DC voltage charged wirelessly to the supercapacitor 214 to monitor the DC voltage wirelessly charged by the voltage and current monitoring unit 213 and the external energy controller 217 A wireless charging unit which prevents overcharge and supplies a DC voltage required to the transceiver 230 of the 900 MHz tag chip 202 and the 2.4 GHz tag so that the battery can be used without a battery; And
2.4GHz RF 신호를 통과시키고 900MHz RF 신호를 차단하는 900MHz RF 신호차단부(220); 및 2.4GHz 무선 송수신 모듈(231)을 통해 2.4GHz RF 신호를 수신받아 2.4GHz 태그를 작동시키는 마이크로 프로세서 모듈(232)로 제공하여 태그를 동작시켜 센서(241)로 센서 데이타를 제공하는 2.4GHz 태그 송수신부(230); 및 상기 2.4GHz 태그 송수신부(230)로부터 센서 데이타를 수신받는 센서(241);를 포함한다. 900MHz RF signal blocking unit 220 for passing the 2.4GHz RF signal and blocking the 900MHz RF signal; And a 2.4 GHz tag that receives a 2.4 GHz RF signal through the 2.4 GHz wireless transmit / receive module 231 and provides the sensor data to the sensor 241 by operating the tag by providing the 2.4 GHz RF signal to the microprocessor module 232 that operates the 2.4 GHz tag. Transceiver 230; And a sensor 241 that receives sensor data from the 2.4 GHz tag transceiver 230.
무선충전기능을 가지는 듀얼밴드 능동형 태그는 두 개의 시스템에서 동시에 사용이 가능하다. 또한 900MHz/2.4GHz 듀얼밴드를 동시에 처리를 함으로써 RF 신호를 최대한 사용하고, 독립된 형태로 사용이 가능하다. 이 태그는 RF 신호의 정보와 신호의 세기를 모두 사용하여 시스템의 전력소모를 감소하고 배터리 수명을 증대효과가 있다.Dual-band active tags with wireless charging can be used simultaneously in two systems. In addition, by simultaneously processing the 900MHz / 2.4GHz dual band, the RF signal can be used to the maximum, and can be used as an independent form. This tag uses both RF signal information and signal strength to reduce system power consumption and increase battery life.
무선충전기능을 가지는 듀얼밴드 능동형 태그(200)는 소형 900MHz/2.4GHz 듀얼 밴드 안테나와 임피던스 정합회로, 900MHz/2.4GHz 듀얼밴드 동시처리가 가능한 RF 신호처리 회로를 포함하고, 그리고 이 태그는 두 개의 시스템에서 동시에 사용이 가능하다. 900MHz/2.4GHz 듀얼밴드 동시처리가 가능한 RF 신호처리 및 SNB를 높이기 위한 독립적 RF 회로 설계 전송효율이 높아지면 시스템의 전력소모가 감소하여 배터리수명의 증대효과 2.4GHz RFID 시스템에서 배터리의 소모를 최소화한다. The dual band active tag 200 having a wireless charging function includes a small 900 MHz / 2.4 GHz dual band antenna, an impedance matching circuit, and an RF signal processing circuit capable of simultaneous 900 MHz / 2.4 GHz dual band processing. It can be used simultaneously in the system. RF signal processing for 900MHz / 2.4GHz dual band simultaneous processing and independent RF circuit design to increase SNB Higher transmission efficiency reduces system power consumption and minimizes battery life in 2.4GHz RFID systems .
3. 무선 충전기능을 가지는 태그 수집기(재생기)3. Tag Collector (Player) with Wireless Charging
무선충전기능을 가지는 태그 수집기(300)는 기존 RFID 시스템에 사용되는 능동형 태그에는 충전용으로 사용이 되지 않고 난 반사 제거용으로만 사용이 된다. 기존 능동형 태그는 무선 인식 영역이 원거리에 사용되었다. 그러나 기존 능동형 태그는 밧데리를 사용하기 때문에 밧데리 교체에 대한 분편함과 동시에 밧데리 교체를 할 수 있는 케이스가 별도로 존재를 하기 때문에 열악한 환경에서 기구적인 신뢰성을 만족하기가 어렵다. 그러나 본 발명에서는 무선충전기능을 가지는 능동형 태그를 사용하기 때문에 별도의 능동형 태그를 충전할 수 있는 태그 수집기가 필요하다. 뿐만 아니라 태그 수집기가 없을 경우, 검수를 하는 능동형 태그가 기존에 설치된 리더의 신호를 받아 지속적으로 동작하기 때문에 태그 관리에 혼선을 주어 정보관리에 매우 어려움을 준다.The tag collector 300 having the wireless charging function is used only for removing the anti-reflection, not for charging the active tag used in the existing RFID system. In the existing active tag, a wireless recognition area is used at a long distance. However, since existing active tags use batteries, it is difficult to satisfy mechanical reliability in harsh environments because there are separate parts for battery replacement and a case for battery replacement. However, since the present invention uses an active tag having a wireless charging function, a tag collector capable of charging a separate active tag is required. In addition, if there is no tag collector, the active tag to be inspected continuously operates under the signal of the existing reader, which causes confusion in tag management, which makes it very difficult to manage information.
도 8은 본 발명에 따른 무선 충전 기능을 가지는 태그 수집기를 나타낸 도면이다. 8 is a diagram illustrating a tag collector having a wireless charging function according to the present invention.
본 발명에서 사용되는 무선 충전 기능을 가지는 태그 수집기(300)는 캐비티 형태의 케이스와 무선충전용 900MHz 안테나와 태그 재 발행용 2.4GHz/900MHz 듀얼밴드 안테나와 2.4GHz/900MHz 리더와 안테나 레이돔으로 구성된다. 전원 공급 장치 이외에 동작 버턴이나 충전량 표시 LED와 스피커 등의 외부 인터페이스는 프로그램으로 동작된다. 이유는 철도와 같은 외부환경에 사용하기 때문에 먼지와 기름때와 같은 부분으로 인한 장비의 고장률을 최소화하는데 있다. The tag collector 300 having a wireless charging function used in the present invention includes a cavity-type case, a 900MHz antenna for wireless charging, a 2.4GHz / 900MHz dual band antenna for tag reissue, a 2.4GHz / 900MHz reader, and an antenna radome. . In addition to the power supply, external buttons such as operation buttons, charge level indicator LEDs, and speakers can be programmed. The reason is to minimize the failure rate of equipment due to parts such as dust and oil because it is used in an external environment such as a railway.
캐비티 형태의 케이스는 4각면 또는 6각면 또는 8각면으로 형성한다. 면의 개수는 4각면이나 6각면 또는 8각면으로 해도 무관하며 난반사가 많이 일어나는 형태로 한다. 각각의 캐비티 내부 면에 무선충전용 900MHz 안테나를 포함한다. The cavity-shaped case is formed of quadrilateral or hexagonal or octagonal surfaces. The number of sides is not related to the quadrilateral, hexagonal or octagonal sides, and forms a lot of diffuse reflection. Each cavity includes a 900MHz antenna for wireless charging.
무선충전용 900MHz 안테나는 캐비티 내에 수많은 태그가 일괄적으로 투입되기 때문에 능동형 태그를 충전하는데 동일한 충전량을 가지기 위해 균일한 전계분포를 가지는 안테나를 사용한다.Since the 900MHz antenna for wireless charging uses a large number of tags in a cavity, an antenna having a uniform electric field distribution is used to charge an active tag to have the same charge amount.
태그 재 발행용 듀얼밴드(2.4GHz/900MHz) 안테나는 소형이면서 스위치 기능을 가지고 태그가 위치하는 곳에서만 인식하고 그 외의 지역에서는 인식되지 않는 선택적 인식영역을 갖는 선반형 안테나의 특성을 가진다. 2.4GHz/900MHz 듀얼밴드 안테나에서 스위치 기능은 재발행을 하는 태그의 정보를 입력하는데 효과적이기 때문이다. 보다 상세하게 설명하면, 900MHz 태그정보를 입력할 때, 900MHz 태그 정보를 900MHz RFID 리더에서 신호를 송출하고, 2.4GHz 리더에서 신호를 송출하지 않는다. The dual-band (2.4GHz / 900MHz) antenna for tag reissue has the characteristics of a shelf-type antenna with a small and switch function, an optional recognition area that recognizes only where a tag is located and is not recognized elsewhere. This is because the switch function in the 2.4 GHz / 900 MHz dual band antenna is effective for inputting the information of a tag to be reissued. In more detail, when the 900MHz tag information is input, the 900MHz tag information is transmitted from the 900MHz RFID reader, and the signal is not transmitted from the 2.4GHz reader.
무선 충전 기능을 가지는 태그 수집기(300)는 상부 면의 뚜껑이 연결고리를 기준으로 개폐되는 구조이며, 바닥면과 윗면 모두를 금속판으로 구성되며, 내부면은 플라스틱으로 형성되며, 외부면은 전자파를 차단하기 위해 금속을 사용한다. The tag collector 300 having a wireless charging function is a structure in which the lid of the upper surface is opened and closed based on the connection ring, and both the bottom and top surfaces are made of metal plates, the inner surface is formed of plastic, and the outer surface is electromagnetic waves. Use metal to block.
캐비티 내부의 전자파는 캐비티 내부에서만 동작하고 전자파 누설을 없게 한다. 캐비티 내부는 전자파가 금속면을 만나면 금속면의 형태에 따라 여러 방향으로 전자파가 반사되는 난 반사의 원리를 이용하여 안테나에서 방사된 전자파는 캐비티 내에서 지속적으로 난반사가 일어나 여러 개의 능동형 태그를 동시에 충전할 수 있게 한다. 태그 수집기(300)에서 캐비티 내부에 사용되는 900MHz RFID 신호는 태그에 정보를 읽는데 사용되는 것이 아니라 능동형 태그를 충전하는데 사용되기 때문에 금속면에서 일어나는 난반사의 신호는 노이즈로 작용되는 것이 아니라 무선충전용 신호원으로 사용된다. 그러므로, 난 반사가 많이 일어나면 그만큼 능동형 태그를 충전하는데 효과를 볼 수 있다.The electromagnetic waves inside the cavity operate only inside the cavity and ensure no electromagnetic leakage. Inside the cavity, when electromagnetic waves meet the metal surface, the electromagnetic wave reflected from the antenna is reflected in various directions according to the shape of the metal surface. The electromagnetic radiation emitted from the antenna continuously diffuses in the cavity to charge several active tags simultaneously. Make it possible. Since the 900 MHz RFID signal used inside the cavity in the tag collector 300 is not used to read information on the tag but is used to charge an active tag, the signal of diffuse reflection on the metal surface is not a noise but a signal for wireless charging. Used as a circle. Therefore, if I have a lot of reflections, it can be effective to charge the active tag.
태그 수집기에 사용되는 2.4GHz/900MHz 듀얼밴드 리더 안테나는 능동형 태그가 충전이 되었을 때 충전확인 및 새로운 아이디(ID) 번호를 입력하는데 사용된다. The 2.4GHz / 900MHz dual-band reader antenna used in the tag collector is used for charging confirmation and entering a new ID number when the active tag is charged.
태그 수집기의 동작절차는 도 9에 도시된 바와 같이 다음과 같이 설명된다.The operation of the tag collector is described as follows as shown in FIG.
능동형 태그 수집기에 투입 -> 캐비티 출입문 잠금(close) -> 900MHz 리더 및 안테나동작 -> 무선충전 -> 모니터를 통한 무선충전완료 -> 문 열림(open) -> 2.4GHHz/900MHz 리더 선택적 동작 -> 태그 ID 재 입력 -> 태그 재사용 Insert into active tag collector-> Cavity door close-> 900MHz reader and antenna operation-> Wireless charging-> Wireless charging completed by monitor-> Door open-> 2.4GHHz / 900MHz reader optional operation-> Retype Tag ID-> Reuse Tag
캐비티 형태의 케이스는 4각면 또는 6각면으로 각각의 면에 무선충전용 900MHz 안테나를 포함한다. The cavity case is quadrilateral or hexagonal and includes a 900 MHz antenna for wireless charging on each side.
캐비티 내부의 전자파는 캐비티 내부에서만 동작하고 전자파 누설을 없게 한다. 캐비티 내부는 난반사의 원리를 이용하여 안테나에서 방사된 전자파는 캐비티 내에서 지속적으로 난반사가 일어나 여러 개의 능동형 태그(200)를 동시에 충전할 수 있게 한다. 태그 수집기(300)에서 캐비티 내부에 사용되는 900MHz RFID 신호는 태그에 정보를 읽는데 사용되는 것이 아니라 능동형 태그(200)를 충전하는데 사용되기 때문에 금속면에서 일어나는 난반사의 신호는 노이즈로 작용이 되는 것이 아니라 무선충전용 신호원으로 사용된다. 그러므로, 난반사가 많이 일어나면 그만큼 능동형 태그(200)를 충전하는데 효과를 볼 수 있다. 태그 수집기(300)에 사용되는 2.4GHHHz/900MHz 듀얼밴드 리더 안테나는 능동형 태그가 충전이 되었을 때 충전확인 및 새로운 아이디(ID) 번호를 입력하는데 사용된다. The electromagnetic waves inside the cavity operate only inside the cavity and ensure no electromagnetic leakage. The inside of the cavity uses the principle of diffuse reflection to allow electromagnetic waves emitted from the antenna to continuously diffuse in the cavity to simultaneously charge multiple active tags 200. Since the 900 MHz RFID signal used inside the cavity in the tag collector 300 is not used to read information on the tag but is used to charge the active tag 200, the signal of diffuse reflection on the metal surface does not act as a noise. Used as a signal source for wireless charging. Therefore, when a large amount of diffuse reflection occurs, the effect of charging the active tag 200 can be obtained. The 2.4GHHHz / 900MHz dual band reader antenna used in the tag collector 300 is used for charging confirmation and inputting a new ID number when the active tag is charged.
이상에서 설명한 바와 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진자가 하기의 특허청구범위에 기재된 본 발명의 기술적 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 또는 변형하여 실시할 수 있다.As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art without departing from the spirit and scope of the present invention described in the claims In the present invention can be carried out by various modifications or variations.
부호의 설명 Explanation of the sign
100: 방향성을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템100: Directional 900MHz / 2.4GHz Dual-Band Integrated RFID Reader System
200: 무선 충전 기능을 가지는 듀얼밴드 능동형 태그 200: dual-band active tag with wireless charging
300: 무선 충전 기능을 가지는 태그 수집기 300: tag collector with wireless charging
본 발명에 따른 스마트 운영 관리를 위한 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템은 4채널의 방향성을 가지는 RFID 리더시스템으로 수동형 및 능동형 태그가 부착되어 있는 사물이나 사람의 무선인식 뿐만 아니라 위치파악과 이동경로를 확인할 수가 있다. 뿐만 아니라 900MHz/2.4GHz 듀얼밴드 일체형 RFID 시스템을 구현하여 공간적인 부분과 시스템 설치시 비용절감을 효과를 볼 수 있다. 충전기능을 가지는 듀얼밴드 능동형 태그는 기존 능동형 태그를 사용 시 밧데리 교체로 인한 불편함과 생명주기의 단점을 극복할 수 있고, RFID의 제한된 인식영역에 대한 문제점을 극복하여 근거리 영역 및 원거리영역에서 동시에 사용가능하다. 충전기능을 가지는 태그 수집기는 태그의 보관 시 자동으로 충전을 할 수 있다. 900MHz / 2.4GHz dual-band integrated RFID system for smart operation management according to the present invention is a four-way directional RFID reader system, as well as the location and movement path as well as the wireless recognition of objects and people with passive and active tags attached You can check. In addition, by implementing a 900MHz / 2.4GHz dual-band integrated RFID system, it is possible to save space in the space part and system installation. Dual-band active tag with charging function can overcome the inconvenience and life cycle shortcomings due to battery replacement when using existing active tag, and overcomes the problem of limited recognition area of RFID at the same time in near and far areas It can be used. The tag collector with charging function can automatically charge the tag when it is stored.
또한, 이러한 RFID 시스템은 철도차량 부품검수 장소 및 철도차량 및 자동차 야적장과 같은 야드 환경, 철도 차량 부품, 자동차 부품, 항공 부품 창고와 같은 관리부품과 이동물품과 사람의 이동이 많은 창고 환경과 같은 근거리 영역과 원거리 영역을 동시에 인식해야 하는 환경에 부품의 효율적인 관리와 RFID 태그를 부착한 사물의 움직임과 위치를 파악하기 위한 것이다. In addition, these RFID systems can be used in near-road environments, such as rail vehicle component inspection sites and yard environments such as railroad vehicles and car yards, and management parts such as railroad vehicle parts, automotive parts, and aerospace parts warehouses, and moving goods and warehouse environments with high mobility. It is for the efficient management of parts in the environment where the area and the remote area should be recognized at the same time and the movement and location of the object with the RFID tag.
또한, 철도차량하부에 능동형 태그를 관리하는 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 RFID 일체형 리더와 철도부품 및 차량하부에 부착하는 900MHz 대역에서 무선충전기능을 가지는 듀얼밴드 RFID 능동형 태그와 능동형 태그를 관리하는 태그 수집기를 개발함으로써, 이러한 RFID 태그를 사용하여 창고의 입출고, 서고관리, 출입통제 등을 하기 위해 움직임이 자유로운 재물조사용 안테나와 고정된 선반안테나로 물품에 부착된 태그의 태그정보를 인식하여 물품의 재고를 조사하는 RFID 이동형 재고조사기에 사용될 수 있다. In addition, 900MHz / 2.4GHz dual-band RFID integrated reader with a directional channel to manage the active tag under the railroad car and dual-band RFID active tag and active tag with wireless charging function in the 900MHz band attached to the railroad parts and the vehicle bottom. By developing a tag collector to manage, the RFID tag is used to recognize the tag information of the tag attached to the goods with the freely moving antenna and fixed shelf antenna for warehouse entry, warehouse management, and access control. Can be used in RFID mobile inventory checker to check the inventory of the goods.
또한, 본 발명은 물류창고, 자재창고 및 창고형 대형매장 등과 같은 곳에 적재된 태그가 부착된 물품에 대하여 길이가 가변되는 재물조사용 안테나 또는 고정된 선반 안테나에 의해 쉽게 태그정보를 획득하는 효과가 있고, 상기 획득된 태그의 정보를 인터넷 통신망을 통해 서버에 전송하여 분석된 태그정보를 열람할 수 있는 효과가 있다.In addition, the present invention has an effect of easily obtaining the tag information by the antenna for the inspection of the variable length or fixed shelf antenna for the article attached to the tag, such as logistics warehouse, material warehouse, warehouse type large store, etc. The tag information may be transmitted to a server through an internet communication network to view the analyzed tag information.

Claims (8)

  1. 야드 환경, 창고 환경 및 철도차량 하부에서 능동형 태그를 관리하도록, 4개의 방향성 채널의 각각의 방향으로 2.4GHz 안테나와 900MHz 안테나를 각각 구비하여 듀얼밴드 능동형 태그를 인식하기 위한 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템; 900 MHz / 2.4 with directional channels for dual-band active tag recognition with 2.4 GHz and 900 MHz antennas in each of the four directional channels to manage active tags in the yard environment, warehouse environment, and underneath railroad vehicles. GHz dual band integrated RFID reader system;
    900MHz 대역에서 무선으로 충전하여 DC전압을 공급하는 무선 충전 기능을 가지는 듀얼밴드 능동형 태그; 및 Dual-band active tag having a wireless charging function to supply a DC voltage by charging wirelessly in the 900MHz band; And
    무선 충전 기능을 가지는 태그 수집기를 포함하며, Includes a tag collector with wireless charging,
    상기 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템은 빔 포밍으로 음영지역의 태그를 인식하도록 90° 각도로 회전하는 시스템 회전체, 및 상기 시스템 회전체를 90° 각도로 회전시키는 모터를 구비하는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.The 900 MHz / 2.4 GHz dual band integrated RFID reader system includes a system rotating body rotating at an angle of 90 degrees to recognize a tag of a shadow area by beam forming, and a motor rotating the system rotating body at an angle of 90 degrees. Dual band integrated RFID system for smart operation management.
  2. 제1항에 있어서, The method of claim 1,
    상기 방향성 채널을 가지는 900MHz/2.4GHz 듀얼밴드 일체형 RFID 리더 시스템은900MHz / 2.4GHz dual band integrated RFID reader system having the directional channel
    동서 남북 방향으로 4각면으로 방형성 채널이 형성된 경우, 4개의 섹터를 가지고 일체형으로 형성된 2.4GHz 방향성 안테나 및 900MHz 방향성 안테나; When the tetragonal channel is formed in four sides in the east-west and north-west direction, the 2.4GHz directional antenna and 900MHz directional antenna integrally formed with four sectors;
    동서남북 방향(A 지역, B지역, C 지역, D지역)으로 각각 일체형으로 동시에 구비된 900MHz 안테나를 RF 케이블로 연결되는 4채널 900MHz RFID 리더; A four-channel 900MHz RFID reader connected to the east-west-south direction (region A, region B, region C, region D) by an RF cable to each of the 900 MHz antennas that are integrally provided simultaneously;
    동서남북 방향(A 지역, B지역, C 지역, D지역)으로 각각 일체형으로 동시에 구비된 2.4GHz 안테나를 RF 케이블로 연결되는 4채널 2.4GHz RFID 리더; A four-channel 2.4 GHz RFID reader connecting the 2.4 GHz antennas which are simultaneously provided in one piece in the east-west-south direction (region A, region B, region C, region D) by RF cable;
    상기 4채널 900MHz RFID 리더와 상기 4채널 2.4GHz RFID 리더와 연결되고, 리더 동작여부 판단용 수동형 태그와 센서와 같은 외부인터페이스 관리 및 전원관리용 컨트롤 보드를 포함하고, It is connected to the four-channel 900MHz RFID reader and the four-channel 2.4GHz RFID reader, and includes a control board for external interface management and power management, such as passive tags and sensors for determining reader operation,
    하나의 레이돔에 2.4GHz/900MHz 듀얼 밴드 일체형으로 구성되는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.Dual band integrated RFID system for smart operation management, characterized in that one radome 2.4GHz / 900MHz dual band integrated.
  3. 제1항에 있어서, The method of claim 1,
    상기 방향성 채널을 가지는 2.4GHz/900MHz 듀얼밴드 일체형 RFID 리더 시스템의 방향성 채널의 지역구분을 위해 방향성을 극대화하는 방식은 해당 지역을 향하는 안테나의 이득(gain)을 높이고 빔을 좁히는 방법과, 안테나 사이의 격리도를 극대화하는 방법을 사용하며, 방향성을 극대화하기 위해 sector1과 sector 2와의 공간적인 격리도를 최대로 하기 위해 안테나에 이중반사판을 사용하는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.The method of maximizing the directionality for region division of the directional channel of the 2.4 GHz / 900 MHz dual band integrated RFID reader system having the directional channel increases the gain of the antenna directed to the region and narrows the beam, and between the antennas. A dual band integrated RFID system for smart operation management using a method of maximizing isolation and using a dual reflector on the antenna to maximize spatial isolation between sector 1 and sector 2 to maximize directionality.
  4. 제1항에 있어서, The method of claim 1,
    상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 The dual band active tag having the wireless charging function
    소형 2.4GHz/900MHz 듀얼 밴드 안테나와 임피던스 정합회로, 2.4GHz/900MHz 듀얼밴드 동시처리가 가능한 RF 신호처리 회로를 포함하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.Dual band integrated RFID system for smart operation management, including a small 2.4GHz / 900MHz dual band antenna, impedance matching circuit, and RF signal processing circuit capable of 2.4GHz / 900MHz dual band simultaneous processing.
  5. 제1항에 있어서, The method of claim 1,
    상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 The dual band active tag having the wireless charging function
    900 MHz 및 2.4 GHz 듀얼 밴드 안테나; 900 MHz and 2.4 GHz dual band antennas;
    900 MHz 및 2.4 GHz 주파수에서 공진되도록 임피던스 정합을 하며, 900MHz 태그 칩에 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력이 되도록 하는 임피던스 매칭 회로; An impedance matching circuit for performing impedance matching to resonate at 900 MHz and 2.4 GHz frequencies, having a signal intensity of at least -14 dBm or higher and inputting a signal intensity of 30 dBm or lower to a 900 MHz tag chip;
    900 MHz 태그로 동작하는 900MHz 태그 칩; A 900 MHz tag chip operating with a 900 MHz tag;
    900MHz AC 전압 신호만 통과시키고 DC 전압 신호를 차단하는 DC전원차단부;A DC power cut-off unit which passes only a 900 MHz AC voltage signal and cuts a DC voltage signal;
    900MHz AC 전압 신호(RF 신호)를 RFtoDC 변환기를 사용하여 DC 전압으로 변환하여 부스트 변환기(Boost Converter)에 의해 활성화된 슈퍼커패시터(Super Capacitor)를 무선으로 충전된 DC전압을 공급하여 슈퍼커패시터에 충전시키고 전압 및 전류 모니터링부 및 외부 에너지 컨트롤러에 의해 무선으로 충전되는 DC 전압을 모니터링하여 과충전을 방지하며, 밧데리 없이 사용가능하도록 900MHz 태그 칩과 2.4 GHz 태그의 송수신부로 DC전압을 공급하는 무선 충전부; The 900MHz AC voltage signal (RF signal) is converted to DC voltage using the RFtoDC converter to charge the supercapacitor by supplying the DC voltage charged wirelessly to the supercapacitor activated by the boost converter. A wireless charging unit for monitoring a DC voltage wirelessly charged by the voltage and current monitoring unit and an external energy controller to prevent overcharge, and supplying a DC voltage to a transceiver of the 900 MHz tag chip and the 2.4 GHz tag so that the battery can be used without a battery;
    2.4GHz RF 신호를 통과시키고 900MHz RF 신호를 차단하는 900MHz RF 신호차단부; 및 900MHz RF signal blocking unit for passing the 2.4GHz RF signal and blocking the 900MHz RF signal; And
    2.4GHz 무선 송수신 모듈을 통해 2.4GHz RF 신호를 수신받아 2.4GHz 태그를 작동시키는 마이크로 프로세서 모듈로 제공하여 태그를 동작시켜 센서 데이타를 제공하는 2.4GHz 태그 송수신부; 및 A 2.4 GHz tag transceiver configured to receive a 2.4 GHz RF signal through a 2.4 GHz wireless transmit / receive module and provide a sensor data by operating the tag by providing the microprocessor module to operate a 2.4 GHz tag; And
    2.4GHz 태그 송수신부로부터 센서 데이타를 수신받는 센서; A sensor receiving sensor data from a 2.4 GHz tag transceiver;
    를 포함하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.Dual band integrated RFID system for smart operation management comprising a.
  6. 제1항 또는 제5항 중 어느 한 항에 있어서, The method according to any one of claims 1 to 5,
    상기 무선충전기능을 가지는 듀얼밴드 능동형 태그는 The dual band active tag having the wireless charging function
    소형 듀얼 밴드 안테나와 900MHz 수동형 태그부와 무선충전회로부와 2.4GHz 능동형 태그부로 구성되고, 상기 900MHz 수동형 태그부와 상기 듀얼밴드 안테나는 소형이면서 외부환경에 영향을 최소화하는 격자형 마이크로 스트립 안테나 구조와 간접급전 미앤더 타입 마이크로 스트립 안테나 구조를 사용하며, 듀얼밴드 안테나에 수신되는 신호를 임피던스 정합회로를 통해 임피던스 정합을 이루고 무선충전회로부에서 충전된 전력을 사용하고, 안테나에서 입력된 신호는 900MHz 태그 칩과 무선충전부로 신호가 들어가며, 상기 900MHz 태그 칩은 리더에서 송신된 신호의 정보를 사용하고, 무선충전부에서는 신호의 세기를 가지고 무선충전을 하며, 상기 900MHz 태그 칩은 수신감도를 최소 -14dBm 이상의 신호세기를 가져야 하고 최대 30dBm 이하의 신호의 세기가 입력이 되도록 임피던스 정합회로를 구현하는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.It consists of a small dual band antenna, a 900 MHz passive tag portion, a wireless charging circuit portion, and a 2.4 GHz active tag portion, and the 900 MHz passive tag portion and the dual band antenna are small in size and indirect with a lattice microstrip antenna structure to minimize the influence on the external environment. It uses a feeding meander type microstrip antenna structure, achieves impedance matching through the impedance matching circuit, and uses the power charged from the wireless charging circuit unit. The signal enters the wireless charging unit, the 900MHz tag chip uses the information of the signal transmitted from the reader, the wireless charging unit wireless charging with the signal strength, the 900MHz tag chip has a signal strength of at least -14dBm or more Signal strength of up to 30 dBm Dual-band integrated RFID system for smart operations management, characterized in that to implement the impedance matching circuit so as to.
  7. 제1항에 있어서, The method of claim 1,
    상기 무선 충전 기능을 가지는 태그 수집기는 The tag collector having the wireless charging function
    캐비티 형태의 케이스와 무선충전용 900MHz 안테나와 태그 재 발행용 2.4GHz/900MHz 듀얼밴드 안테나와 2.4GHz/900MHz 리더와 안테나 레이돔으로 구성되고,It consists of a cavity case, a 900MHz antenna for wireless charging, a 2.4GHz / 900MHz dual band antenna for tag reissue, a 2.4GHz / 900MHz reader and an antenna radome,
    전원 공급 장치 이외에 동작 버턴이나 충전량 표시 LED와 스피커 등의 외부 인터페이스는 프로그램으로 동작되며, 그 이유는 철도와 같은 외부환경에 사용하기 때문에 먼지와 기름때와 같은 부분으로 인한 장비의 고장률을 최소화하기 위함이며, 상기 캐비티 형태의 케이스는 4각면 또는 6각면 또는 8각면으로 형성되고, 면의 개수는 4각면이나 6각면 또는 8각면으로 해도 무관하며 난반사가 많이 일어나는 형태로 하며, 각각의 캐비티 내부 면에 무선충전용 900MHz 안테나를 포함하며, In addition to the power supply, external buttons such as operation buttons, charge level indicator LEDs, and speakers are operated by programs.The reason for this is to minimize the failure rate of the equipment due to parts such as dust and oil because it is used for external environment such as railway. The case of the cavity type is formed of four sides or six sides or eight sides, and the number of sides is not related to the four sides, the six sides or the eight sides, and forms a lot of diffuse reflections. Includes a 900 MHz rechargeable antenna
    상기 무선충전용 900MHz 안테나는 캐비티 내에 수많은 태그가 일괄적으로 투입이 되기 때문에 능동형 태그를 충전하는데 동일한 충전량을 가지기 위해 균일한 전계분포를 가지는 안테나를 사용하며, The 900MHz antenna for wireless charging uses an antenna having a uniform electric field distribution in order to have the same amount of charge to charge the active tag because a large number of tags are put in a cavity.
    상기 태그 재 발행용 듀얼밴드(2.4GHz/900MHz) 안테나는 소형이면서 스위치 기능을 가지고 태그가 위치하는 곳에서만 인식을 하고 그 외의 지역에서는 인식이 되지 않는 선택적 인식영역을 가지는 선반형 안테나의 특성을 가진다. 2.4GHz/900MHz 듀얼밴드 안테나에서 스위치 기능을 제공하여 900MHz 태그정보를 입력할 때 900MHz 태그 정보를 900MHz RFID 리더에서 신호를 송출하고 2.4GHz 리더에서 신호를 송출하지 않는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.The dual band (2.4GHz / 900MHz) antenna for tag reissue has the characteristics of a shelf-type antenna having a selective recognition area that is small and has a switch function, recognizes only where a tag is located, and is not recognized in other areas. . Provides a switch function in the 2.4GHz / 900MHz dual-band antenna to provide 900MHz tag information when transmitting 900MHz tag information from the 900MHz RFID reader, and does not transmit a signal from the 2.4GHz reader for smart operation management Dual band integrated RFID system.
  8. 제1항에 있어서, The method of claim 1,
    상기 무선 충전 기능을 가지는 태그 수집기는 The tag collector having the wireless charging function
    상부 면의 뚜껑이 연결고리를 기준으로 개폐되는 구조이며, 바닥면과 윗면 모두를 금속판으로 구성되며, 내부면은 플라스틱으로 형성되며, 외부면은 전자파를 차단하기 위해 금속을 사용하며, 캐비티 형태의 케이스와 무선충전용 900MHz 안테나 및 2.4GHz/900MHz 안테나와 2.4GHz/900MHz 리더와 안테나 레이돔으로 구성되고, 상기 캐비티 형태의 케이스는 4각면 또는 6각면으로 각각의 면에 무선충전용 900MHz 안테나를 포함하며, 바닥면과 윗면 모두를 금속판으로 구성하고, 캐비티 내부의 전자파는 캐비티 내부에서만 동작하고 전자파 누설을 없게 하며, 상기 캐비티 내부는 난반사의 원리를 이용하여 안테나에서 방사된 전자파는 캐비티 내에서 지속적으로 난반사가 일어나 여러 개의 능동형 태그를 동시에 충전할 수 있게 하고, 상기 태그 수집기에서 캐비티 내부에 사용되는 900MHz RFID 신호는 태그에 정보를 읽는데 사용되는 것이 아니라 상기 능동형 태그를 충전하는데 사용되기 때문에 금속면에서 일어나는 난반사의 신호가 노이즈로 작용이 되는 것이 아니라 무선충전용 신호원으로 사용되는 것을 특징으로 하는 스마트 운영 관리를 위한 듀얼밴드 일체형 RFID 시스템.The lid of the upper surface is opened and closed based on the connection ring, and both the bottom and top surfaces are made of metal plates, the inner surface is made of plastic, and the outer surface uses metal to block electromagnetic waves. The case consists of a 900MHz antenna for wireless charging, 2.4GHz / 900MHz antenna, 2.4GHz / 900MHz reader and antenna radome, and the cavity-type case includes quadrangular or hexagonal, each side including a 900MHz antenna for wireless charging. In addition, the bottom surface and the upper surface are composed of a metal plate, and the electromagnetic waves inside the cavity operate only inside the cavity and prevent electromagnetic leakage, and the interior of the cavity uses the principle of diffuse reflection, and the electromagnetic waves emitted from the antenna are continuously diffused in the cavity. To allow multiple active tags to be charged at the same time, and inside the cavity in the tag collector Since the 900MHz RFID signal used for is not used to read information in a tag but is used to charge the active tag, the signal of diffuse reflection on the metal surface is used as a signal source for wireless charging rather than acting as a noise. Dual band integrated RFID system for smart operation management.
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