CN105260752B - Wireless identification system and method of operation thereof - Google Patents
Wireless identification system and method of operation thereof Download PDFInfo
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- CN105260752B CN105260752B CN201510064944.XA CN201510064944A CN105260752B CN 105260752 B CN105260752 B CN 105260752B CN 201510064944 A CN201510064944 A CN 201510064944A CN 105260752 B CN105260752 B CN 105260752B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000011017 operating method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 8
- 230000001413 cellular effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Classifications
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/46—Indirect determination of position data
- G01S13/48—Indirect determination of position data using multiple beams at emission or reception
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
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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
- G06K7/10297—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 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
-
- 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
- G06K7/10316—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 using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—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 using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
Abstract
A wireless identification system and a method of operating the same are disclosed. The wireless identification system includes a tag reader device and a tag device. The tag reader device transmits a directional beam based on the location of the identification object obtained by the radar signal. The tag device transmits information about the identification object to the tag reader device in response to the directional beam.
Description
Technical Field
The invention relates to a wireless identification system and a method of operating the same.
Background
In an existing Wireless Local Area Network (WLAN) or cellular wireless communication, a terminal first performs an association operation or a registration operation with a base station or an Access Point (AP). In addition, the base station or the AP transmits a request message to the terminal, and the terminal transmits a response message to the request message to the base station or the AP. In this case, when the base station or the AP does not receive the response message from the terminal, the base station or the AP retransmits the request message a predetermined number of times. In a case where a response to the retransmitted message is not received, the base station or the AP disconnects the connection with the corresponding terminal. In Wireless Local Area Network (WLAN) or cellular wireless communication, a terminal performs an association operation or a registration operation with a base station or an AP before transmitting or receiving data. Therefore, since the base station or the AP continuously detects and manages the state of the terminal, reliable communication can be performed. In existing systems, the identification ratio may be defined as the degree to which a terminal connects to or registers with a base station or AP.
Meanwhile, in a wireless tag system, identification may be defined as a ratio of information received from an RFID tag by a Radio Frequency Identification (RFID) reader.
That is, in a case where the RFID tag forwards information in response to a request of the RFID reader, a ratio of information received from the RFID tag by the RFID reader may be indicated as the identification. In the wireless tag system, the number of RFID tags that can respond to a request of an RFID reader, and the number of responses that the RFID reader can recognize in the responses of the RFID tags are important factors. The RFID technology has a short communication distance, has a forward radiation pattern of a wireless signal, and does not have a process in which an RFID tag is registered with an RFID reader in advance. Therefore, when the RFID reader does not know the location of the RFID tags or does not detect the total number of RFID tags, it is difficult for the RFID reader to detect whether there is a problem in communication with any RFID tag.
Therefore, in a case where the identification object to be detected is located at a long distance and it is difficult to know the number of identification objects and their locations, the existing wireless tag system may be inappropriate.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person skilled in the art.
Disclosure of Invention
The present invention has been made in an effort to provide a wireless identification system and an operation method thereof, which have an advantage of improving an identification ratio of a recognition object located at a long distance.
An exemplary embodiment of the present invention provides a wireless identification system. The wireless identification system may include: a tag reader device that transmits a radar signal to an identification object to obtain radar information on the identification object, and transmits a directional beam to the identification object based on the radar information; and a tag device installed in the identification object and transmitting information on the identification object to the tag reader device in response to the directional beam.
When transmitting a directional beam, the tag reader device may transmit the same directional beam in multiple directions.
The radar information may include a location of the identified object.
The information on the identification object may include an Identification (ID) of the identification object and a location of the identification object.
The tag reader device may include: a radar unit transmitting a radar signal to obtain a location of the recognition object; a tag reader unit generating the directional beam based on a location of the identification object; and a directional antenna transmitting the directional beam to the identification object.
The label device may include: a GPS unit for calculating the location of the recognition object; and an RFID unit transmitting a location of the identification object and an ID of the identification object to the tag reader device in response to the directional beam.
The identification object may be a ship located on the sea, and the tag reader device may be installed in a patrol ship that manages the ship.
Another exemplary embodiment of the present invention provides an operating method of a wireless identification system for managing an identification object having a tag mounted therein. The method of operation of the wireless identity system may comprise: generating a first message requesting information about the identification object from the tag; transmitting a first message to the tag along a first direction based on a first location that is a location of an identification object obtained using a radar signal; and receiving a second message from the tag in response to the first message.
The identification object may be a plurality of, the tag may be a plurality of and each may be installed in the plurality of identification objects, the transmitting of the first message may include transmitting the first message to the plurality of tags, and the receiving of the second message may include receiving the second message from the plurality of tags, respectively.
The operating method may further include: calculating a ratio of the identifications, which is a ratio of the number of the received second messages to the number of the plurality of tags, and retransmitting the first message in a second direction different from the first direction when the ratio of the identifications is less than a predetermined set value.
The operating method may further include: the first message is retransmitted along a second direction different from the first direction.
The first message may include an ID of the identification object and a second location that is a location of the identification object obtained using the satellite signal.
The identification object may be a ship located on the sea.
According to an embodiment of the present invention, the ratio of identification of a recognition object located at a long distance can be improved by transmitting a directional beam based on location information of the recognition object obtained from a radar.
According to another exemplary embodiment of the present invention, the rate of identification may be further improved by using a beam-swinging (shaking) method when transmitting directional beams.
Drawings
Fig. 1 is a diagram illustrating a wireless identification system according to an exemplary embodiment of the present invention.
Fig. 2 is a diagram showing a case in which a fishing vessel at sea is managed using a wireless identification system according to an exemplary embodiment of the present invention.
Fig. 3 is a diagram illustrating a case in which the radar unit 122 according to an exemplary embodiment of the present invention obtains information on the ship 240 located on the sea by a radar signal.
Fig. 4 is a diagram illustrating a case in which the beam swing method is used when the patrol boat 220 transmits a directional beam according to an exemplary embodiment of the present invention.
Fig. 5 is a diagram illustrating an operation method of a wireless identification system according to a first exemplary embodiment of the present invention.
Fig. 6 is a diagram illustrating an operation method of a wireless identification system according to a second exemplary embodiment of the present invention.
Detailed Description
In the following detailed description, only certain exemplary embodiments of the present invention have been shown and described, simply by way of illustration. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive. Like reference numerals designate like elements throughout the specification.
Throughout the specification, unless explicitly described to the contrary, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
In addition, throughout this specification and the claims that follow, when an element is described as being "coupled" to another element, the element may be "directly coupled" to the other element or may be "electrically coupled" to the other element through a third element.
The wireless identification system and the operation method thereof according to the exemplary embodiment of the present invention can improve the identification ratio of the identification object located at a long distance by the directional control of the antenna. Thereafter, although a case in which the wireless identification system according to the exemplary embodiment of the present invention is used for a system for managing a plurality of ships at sea will be described as an example for convenience of explanation, the wireless identification system may be used for other cases in which a recognition object located at a long distance is managed.
Fig. 1 is a diagram illustrating a wireless identification system according to an exemplary embodiment of the present invention.
As shown in fig. 1, a wireless identification system 100 according to an exemplary embodiment of the present invention includes a tag reader device 120 and a tag device 140.
The tag reader device 120 includes a radar unit 122, a tag reader unit 124, and an antenna 126.
The radar unit 122 obtains the location and size of the identification object (hereinafter referred to as "radar information") by transmitting a radar signal to the identification object, and transmits the radar information to the tag reader unit 124. Meanwhile, although not shown in fig. 1, a separate antenna for transmitting a radar signal may be installed in the tag reader device 120.
The tag reader unit 124 transmits a message (hereinafter referred to as a "request message") requesting Identification (ID) and location information to the identification object. Here, the tag reader unit 124 according to an exemplary embodiment of the present invention generates a directional beam when transmitting the request message, and transmits it in a direction in which the identification object exists, based on the radar information transmitted from the radar unit 122.
The antenna 126 may be a directional antenna that transmits a directional beam to an identification object. Since the directional antenna is well known to those skilled in the art, a detailed description thereof will be omitted.
As shown in FIG. 1, a tag device 140 according to an exemplary embodiment of the present invention includes a GPS unit 142, an RFID unit 144, and an antenna 146.
The GPS unit 142 calculates a location (hereinafter referred to as "GPS coordinates") of an identification object in which the tag device 140 is installed using satellite signals. GPS unit 142 transmits the calculated GPS coordinates to RFID unit 144. Since a method in which the GPS unit 142 calculates GPS coordinates using satellite signals is well known to those skilled in the art, a detailed description thereof will be omitted.
The antenna 146 may be an omni-directional antenna that generates and transmits an omni-directional beam to the tag reader device 120. Meanwhile, since the antenna 146 may be implemented as a directional antenna but installed in a plurality of identification objects, it may be implemented as an inexpensive omni-directional antenna.
Fig. 2 is a diagram showing a case in which a fishing vessel at sea is managed using a wireless identification system according to an exemplary embodiment of the present invention.
As shown in fig. 2, an environment for managing marine fishing vessels includes a patrol vessel 220 and a plurality of vessels 240.
The patrol ship 220 is a ship for detecting and managing information on a plurality of ships. The tag reader device 120 according to an exemplary embodiment of the present invention may be installed in the patrol boat 220.
The plurality of ships 240 are managed as an identification object. A tag device 140 according to an exemplary embodiment of the present invention may be installed in each of the plurality of vessels 240. Each of the plurality of vessels 240 responds to the patrol ship 220 request through the installed tag device 140.
The radar unit 122 installed in the patrol boat 220 transmits information about the location and size of surrounding ships (i.e., radar information) to the tag reader unit 124. The tag reader unit 124 generates a directional beam based on the radar information and transmits the request message to the ship 240 located at a long distance through the directional beam.
The ship 240 generates a response message through the tag device 140 installed therein and transmits it to the patrol ship 220. Here, the response message includes GPS coordinates and an ID.
The patrol ship 220 extracts GPS coordinates and ID information from the reply message received from the ship 240. The patrol ship 220 manages the ship 240 by mapping the extracted information of the corresponding ship (i.e., the ship type, whether the operation of the ship is permitted, etc.) to radar information. Meanwhile, when there is a ship 240 that does not transmit the reply message, the patrol ship 220 performs a retransmission request. With the retransmission request, the patrol ship 220 can check whether the ship 240 that does not transmit the reply message is an unallowed ship, or whether only a communication error occurs.
Fig. 3 is a diagram illustrating a case in which the radar unit 122 according to an exemplary embodiment of the present invention obtains information on the ship 240 located on the sea by a radar signal.
In fig. 3, a point 330 indicates a location of the ship 240 and a size of the point 330 indicates size information of the ship 240.
Meanwhile, in fig. 3, the center of a circle 310 indicates the location of the patrol ship 220, and the circle 310 indicates an area where the communication coverage of the patrol ship 220 reaches as a directional beam transmitted from the tag reader unit 124. Circle 320 indicates the sensible area of radar unit 122 as the area reached by the radar signal transmitted from radar unit 122. The oval area 340 indicates an area that a directional beam reaches (covers) when the tag reader unit 124 of the patrol boat 220 transmits the directional beam in a specific direction.
As described above, once the tag reader unit 124 of the patrol boat 220 transmits a directional beam in a specific direction, the ship 240 (i.e., the RFID unit 144) transmits its own ID and GPS coordinates to the tag reader unit 124 of the patrol boat 220 as a response to the directional beam.
Although fig. 3 shows a case in which the patrol boat 220 transmits a directional beam in a specific direction to request information about the ships 240, the patrol boat 220 may receive a smaller number of response messages from the ships than the number of ships 240 displayed by the radar unit 122. This phenomenon may occur in a situation where reply messages are received simultaneously from several vessels 240 and the messages collide with each other. In addition, this phenomenon may occur in a case where it is difficult to perform communication due to a geographical feature that reduces an effective distance at which a signal arrives, or a ship covers a boat. In this case, the patrol ship 220 may improve the identification ratio of the ship 240 by performing retransmission.
However, in a case where the waves are stored in rolling waves (rolling waves) due to ocean conditions, a case may occur where the patrol ship 220 does not transmit a directional beam in a desired direction. From the perspective of the patrol ship 220, since the ship 240 is located at a somewhat long distance and the characteristics of the direction in which the directional beam is transmitted are taken into consideration, the sway of the ship 240 has a low possibility of causing an identification error. In the case where directional beams are transmitted over long distances, the sway of the patrol boat 220 may cause large errors in angle. Therefore, the patrol boat 220 according to the exemplary embodiment of the present invention uses a beam swing method that slightly swings a directional beam from an original direction when transmitting the directional beam in order to increase an identification ratio of the boat 240.
Fig. 4 is a diagram illustrating a case in which the beam swing method is used when the patrol boat 220 transmits a directional beam according to an exemplary embodiment of the present invention.
As shown in fig. 4, the patrol boat 220 repeatedly transmits the same directional beams 350 and 360 by slightly shifting the direction of the original directional beam 340 in order to correct errors of the directional beams occurring by the wave's wobble. Directional beam 350 is the beam transmitted by slightly shifting the original directional beam 340 in the counter-clockwise direction. Directional beam 360 is the beam transmitted by slightly shifting the original directional beam 340 in a clockwise direction.
Fig. 5 is a diagram illustrating an operation method of a wireless identification system according to a first exemplary embodiment of the present invention. The various steps of fig. 5 have been illustrated at the perspective of a patrol boat 220 in accordance with an exemplary embodiment of the present invention.
First, the patrol ship 220 according to the exemplary embodiment of the present invention generates a directional beam and transmits a request message in a specific direction in which the ship 240 exists based on radar information obtained by the radar unit 122 (S510).
The patrol ship 220 receives a response message from the ship 240 as a response to the request message (S520). The reply message includes the GPS coordinates of the ship 240 and the ID information of the ship 240.
The patrol ship 220 maps the radar information to the information of the ship 240 received from the ship 240 (S530). That is, the patrol ship 220 extracts GPS coordinates and ID information from the reply message received from the ship 240. The patrol ship 220 maps the extracted information (e.g., GPS coordinates) of the corresponding ship to radar information.
Next, the patrol ship 220 determines whether the identified ratio is higher than a first set value based on a result of the patrol ship 220 generated by mapping at step S530 (S540). That is, the patrol boat 220 detects the number of boats 240 present in the area 340 reached by the directional beam based on the radar information. In addition, the patrol boat 220 can know the number of boats 240 from which the response messages are transmitted based on the number of response messages. Here, the identified ratio represents a ratio of the number of ships 240 existing in the area 340 where the directional beam reaches to the number of ships transmitting the response message, and the first set value represents a value predetermined by the user.
At S540, if the identified ratio exceeds the first set value, the patrol boat 220 moves to another place and performs S510 (S550).
Meanwhile, at S540, if the identified ratio does not exceed the first set value, the patrol boat 220 retransmits the request message to the boat 240 using the beam-swing method (S560). In this case, steps S520, S530 and S540 are re-executed and repeated until the identified ratio exceeds the first set value.
Fig. 6 is a diagram illustrating an operation method of a wireless identification system according to a second exemplary embodiment of the present invention.
As shown in fig. 6, the operation method of the wireless identity system according to the second exemplary embodiment of the present invention is the same as the operation method of the wireless identity system according to the first exemplary embodiment of the present invention (the case of fig. 5) except that S540 is changed to S540'.
In the first exemplary embodiment of the present invention shown in fig. 5, in a case where the identification object is not a ship or a registered ship, a case where a reply message is not received from the ship 240 may occur. In this case, a case may occur in which the identified ratio does not exceed the first set value.
Therefore, in S540' of fig. 6, the patrol boat 220 determines whether the number of times the beam is used to swing is higher than a second set value. That is, if the number of times the beam wobble is used is higher than the second set value, S550 is performed, and if the number of times the beam wobble is used is not higher than the second set value, S560 is performed.
In this way, the tag reader device according to the exemplary embodiment of the present invention can improve the rate of identification of a recognition object located at a long distance by transmitting a directional beam based on information obtained from a radar. In addition, the tag reader device according to the exemplary embodiment of the present invention may further improve the rate of identification by using a beam swing method when transmitting a directional beam.
While the invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. A wireless identification system, comprising:
a tag reader device that transmits a radar signal to an identification object to obtain radar information on the identification object, and transmits a directional beam to the identification object based on the radar information; and
a tag device installed in the identification object and transmitting information on the identification object to the tag reader device in response to the directional beam,
wherein the information on the identification object includes an Identification (ID) of the identification object and a location of the identification object, the radar information includes the location of the identification object, and
wherein the tag reader device calculates a ratio of the number of identification objects determined based on the radar information to the number of tag devices transmitting the information on the identification objects, and compares the ratio with a predetermined value.
2. The wireless identification system of claim 1, wherein
When transmitting a directional beam, the tag reader device transmits the same directional beam in multiple directions.
3. The wireless identification system of claim 2, wherein
The tag reader device includes:
a radar unit transmitting a radar signal to obtain a location of the recognition object;
a tag reader unit generating the directional beam based on a location of the identification object; and
and a directional antenna for transmitting the directional beam to the identification object.
4. The wireless identification system of claim 1, wherein
The label device includes:
a GPS unit for calculating the location of the recognition object; and
and an RFID unit transmitting the location of the identification object and the ID of the identification object to the tag reader device in response to the directional beam.
5. The wireless identification system of claim 1, wherein
The identification object is a ship located on the sea, an
The tag reader device is installed in a patrol ship that manages the ship.
6. An operating method of a wireless identification system for managing an identification object having a tag installed therein, the operating method comprising:
generating a first message requesting information about the identification object from the tag;
transmitting a directional beam in a first direction to transmit a first message to the tag based on a first location that is a location of an identification object obtained using a radar signal;
receiving a second message in response to the first message from the tag, wherein the second message includes an ID of the identification object and a second location which is a location of the identification object obtained using satellite signals; and
a ratio of the number of recognition objects to the number of received second messages is calculated based on the first location and the second messages, and the ratio is compared with a predetermined set value.
7. The method of operation of claim 6, wherein
The number of the recognition objects is a plurality of,
the tag is plural and each is installed in the plural identification objects,
transmitting the first message includes transmitting the first message to the plurality of tags, an
Receiving the second message includes receiving the second message from the plurality of tags, respectively.
8. The method of operation of claim 6, further comprising:
retransmitting the first message in a second direction different from the first direction when the ratio is less than the predetermined set value.
9. The method of operation of claim 6, wherein
The identification object is a ship located on the sea.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0086314 | 2014-07-09 | ||
| KR1020140086314A KR102250990B1 (en) | 2014-07-09 | 2014-07-09 | Wireless identification system and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105260752A CN105260752A (en) | 2016-01-20 |
| CN105260752B true CN105260752B (en) | 2020-06-09 |
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| CN201510064944.XA Expired - Fee Related CN105260752B (en) | 2014-07-09 | 2015-02-09 | Wireless identification system and method of operation thereof |
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| KR (1) | KR102250990B1 (en) |
| CN (1) | CN105260752B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201838006U (en) * | 2010-07-19 | 2011-05-18 | 晁顶 | Electronic scanning card reader |
| CN103229192A (en) * | 2010-11-23 | 2013-07-31 | 讯宝科技公司 | Radio frequency identification system and related operating methods |
| CN103268639A (en) * | 2013-05-10 | 2013-08-28 | 北京速通科技有限公司 | ETC lane anti-jamming method based on multi-beam antenna |
| KR101374350B1 (en) * | 2012-12-04 | 2014-03-19 | 한국철도기술연구원 | Apparatus for detecting position of train |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100895117B1 (en) * | 2007-06-29 | 2009-04-28 | 주식회사 코리아일레콤 | Ship location management system and location management device for naval vessel and location management device for ship |
| JP5397028B2 (en) * | 2009-06-05 | 2014-01-22 | 富士通株式会社 | Radio wave control device, radio wave control system, and radio wave control method |
| WO2013053945A1 (en) * | 2011-10-14 | 2013-04-18 | Siemens Aktiengesellschaft | Method and system for supplying energy to at least one mobile component in a wireless communications system, in particular to rfid tags of an rfid system |
-
2014
- 2014-07-09 KR KR1020140086314A patent/KR102250990B1/en active IP Right Grant
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2015
- 2015-02-09 CN CN201510064944.XA patent/CN105260752B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201838006U (en) * | 2010-07-19 | 2011-05-18 | 晁顶 | Electronic scanning card reader |
| CN103229192A (en) * | 2010-11-23 | 2013-07-31 | 讯宝科技公司 | Radio frequency identification system and related operating methods |
| KR101374350B1 (en) * | 2012-12-04 | 2014-03-19 | 한국철도기술연구원 | Apparatus for detecting position of train |
| CN103268639A (en) * | 2013-05-10 | 2013-08-28 | 北京速通科技有限公司 | ETC lane anti-jamming method based on multi-beam antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102250990B1 (en) | 2021-05-12 |
| CN105260752A (en) | 2016-01-20 |
| KR20160006557A (en) | 2016-01-19 |
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