CN113570766A - Non-inductive channel intelligent networking identification system - Google Patents
Non-inductive channel intelligent networking identification system Download PDFInfo
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- CN113570766A CN113570766A CN202110848161.6A CN202110848161A CN113570766A CN 113570766 A CN113570766 A CN 113570766A CN 202110848161 A CN202110848161 A CN 202110848161A CN 113570766 A CN113570766 A CN 113570766A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
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- 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
- G06K17/0029—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 the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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Abstract
The invention provides an intelligent networking identification system of a non-inductive channel, which comprises: a plurality of signal detection devices for identifying radio frequency tags, each signal detection device comprising two antennas for performing spatial signal coverage; the first signal detection device is respectively arranged at two sides of the longitudinal axis of the longitudinal channel space by two antennas; the second signal detection device is arranged in a transverse channel space range which is vertically crossed with the longitudinal channel space, and a first antenna of the second signal detection device is arranged in a crossed space of the longitudinal channel space and the transverse channel space and covers signals facing to the directions of two ends of the longitudinal axis; and the control device is electrically connected with each signal detection device so as to control the signal detection device to carry out signal coverage to read/write the radio frequency tag. This application defines the required access way that passes through of emitting frequency label with the coverage relation of a plurality of signal detection device's antenna, can realize the radio frequency label discernment of non-contact non-induction formula through this access way, can avoid missing reading, promotes recognition efficiency.
Description
Technical Field
The invention relates to the technical field of radio frequency, in particular to an intelligent networking identification system of a non-inductive channel.
Background
In recent years, with the large-scale construction of the internet of things, intelligent life is gradually popularized, activities of daily life are simplified, and various activities in life are gradually self-helpless, such as noninductive shopping and insensive book borrowing and returning. The non-inductive shopping means that after people directly obtain commodities from shops, the shopping settlement can be finished without a salesperson or a self-service vending machine; the senseless book borrowing and returning means that people obtain a certain book from a library, the book is directly taken out of the library, and the book borrowing operation can be directly finished without a book borrower or a self-service book borrowing machine.
The technical principle of the noninductive shopping and the noninductive book borrowing and returning is as follows: adding a radio frequency tag for each article, acquiring corresponding radio frequency tag information of the article through a radio frequency technology when people pick up the article, and binding the acquired radio frequency tag information with the ID of a shopper or a borrower, thereby completing the implementation of non-inductive operation.
In order to realize the non-inductive shopping and the non-inductive book borrowing and returning in scenes such as markets, libraries and the like, the radio frequency antenna is required to have stronger radiation performance and wider radiation space so as to accurately identify the tag data and data of all the taken commodities or books. However, since the radiation range of a single rf antenna is limited, and when the number of people in a shopping mall or a library is large, it is difficult for the single rf antenna to accurately determine all operations performed by intensive people, so that a certain commodity or book is taken but not identified by the rf antenna, which results in economic loss.
To avoid this, it is common in the industry to arrange rf antennas in large scale in shopping malls or libraries to enhance the accuracy of rf identification. Radio frequency antennas in a shopping mall or a library are generally uniformly distributed in a lattice form indoors, but different problems are caused by the density of the arrangement of the radio frequency antennas. When the radio frequency antennas are arranged sparsely, the space range in which each radio frequency antenna needs to be responsible is large, and if the personnel in the range in which the radio frequency antenna is located are too dense, the single radio frequency antenna can generate the situation that the accurate judgment of all the operations performed by the dense personnel is difficult to perform. However, when the radio frequency antennas are densely arranged, the number of the required radio frequency antennas is large, so that the arrangement cost of the radio frequency antennas in a market or a library is increased sharply, and the economic pressure is increased. In addition, the radio frequency antenna uses the position as the center of a circle, a radiation blind area is possibly formed among the radiation ranges of a plurality of sparsely arranged radio frequency antennas for radiating signals in a circular area, and radio frequency tags in the radiation blind area cannot be successfully read.
In a market or a library, people can generally select commodities or books and can often take or put down the commodities or the books, so that the radio frequency antenna can identify commodities which do not need to be purchased or the books which need to be borrowed, the radio frequency antenna can identify invalid selections of people, the working pressure of the radio frequency antenna is increased, and the calculation pressure of the whole database is increased.
Disclosure of Invention
The invention aims to provide a non-inductive channel intelligent networking identification system capable of emitting signals to cover a channel space.
The invention provides a non-inductive channel intelligent networking identification system which is suitable for the purpose of the invention and comprises:
a plurality of signal detection devices for identifying radio frequency tags, each signal detection device comprising two antennas for performing spatial signal coverage; wherein the content of the first and second substances,
the first signal detection device is respectively arranged at two sides of the longitudinal channel space longitudinal axis by two antennae, and the two antennae face each other to cover signals for the longitudinal channel space;
the second signal detection device is arranged in a transverse channel space range which is vertically crossed with the longitudinal channel space, a first antenna of the second signal detection device is arranged in the crossed space of the longitudinal channel space and the transverse channel space and covers signals facing to the two end directions of the longitudinal axis, and a second antenna of the second signal detection device is arranged in the transverse channel space and covers signals to the channel space in the direction vertical to the longitudinal axis;
and the control device is electrically connected with each signal detection device so as to control the signal detection device to carry out signal coverage to read/write the radio frequency tag.
Further, the longitudinal passage space and the transverse passage space jointly define an access passage with a turning path of the radio frequency tag.
Furthermore, the system for intelligently networking and identifying the non-inductive channel further comprises a third signal detection device which is also arranged in a longitudinal channel space, and the antennas of the first signal detection device and the third signal detection device are respectively arranged in the longitudinal channel spaces at two sides of the signal covered by the first antenna of the second signal detection device.
Preferably, the non-inductive channel intelligent networking identification system corresponds to a plurality of transverse channel spaces, and each transverse channel space is correspondingly provided with a signal detection device according to the arrangement of the second signal detection device.
Preferably, a plurality of longitudinal channel spaces and a plurality of transverse channel spaces corresponding to the non-inductive-channel intelligent networking identification system are arranged along the longitudinal axis, each longitudinal channel space is arranged according to the arrangement of the first signal detection device, the signal detection devices are correspondingly arranged, and each transverse channel space is arranged between two longitudinal channel spaces.
Furthermore, each signal detection device is provided with a vital sign sensing device connected with the control device in a matched manner, and the signal detection device is used for detecting the vital sign signals and driving the matched signal detection device to implement signal coverage when acquiring the vital sign signals.
Furthermore, the control device is provided with a reader corresponding to each signal detection device, and the reader is used for outputting read-write signals to the antenna; the control device is provided with a controller which is controlled by the vital sign signals, and the controller sends driving signals to drive the reader-writer to work when receiving the vital sign signals.
Specifically, the control device is provided with a console for controlling the controller, and the console updates the radio frequency tag information acquired by all the signal detection devices and historical radio frequency tag information in the database.
Specifically, the antenna comprises two antenna oscillators, the two antenna oscillators are electrically connected with a tuning circuit respectively, and the tuning circuit is controlled by the control device to change the working frequency point of the corresponding antenna oscillator.
Preferably, the antenna is arranged on the shell, and the two antenna oscillators are embedded in the oscillator groove on the shell in a laminating manner.
Compared with the prior art, the invention has the following advantages:
firstly, the longitudinal channel space and the transverse channel space of the intelligent networking identification system with the non-inductive channel define an access channel together, the access channel can guide people flow, two antennas of the signal detection device can cover signals to the corresponding channel space, so that the radio frequency tags entering the access channel space can be read by the signals transmitted by the antennas, and a shopper or a book borrower can finish shopping operation or book borrowing operation in a non-inductive mode after walking out of the access channel.
Secondly, the second signal detection device corresponding to the transverse channel space of the non-inductive channel intelligent networking identification system is provided with two antennas with different covering directions, the first antenna carries out longitudinal signal covering, and the second antenna carries out transverse signal covering, so that comprehensive signal covering of the transverse channel space is realized. And because the radiation directions of the first antenna and the second antenna are different, the first antenna and the second antenna can read the radio frequency tags at different angles with the channel in combination, so that the radio frequency tags can be accurately read.
Thirdly, the intelligent networking identification system of the non-inductive channel is arranged at the entrance or the exit of a shopping mall or a library, a plurality of channel spaces form an access channel for guiding people flow, and a signal detection device is correspondingly arranged in each channel space.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an arrangement of an intelligent networking identification system for a non-inductive channel in a channel space according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic diagram of an arrangement of an intelligent networking identification system for a non-inductive channel in a channel space according to an embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of the non-inductive channel intelligent networking identification system of the present invention.
Fig. 4 is a schematic circuit diagram of an antenna of the non-inductive channel intelligent networking identification system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Moreover, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and are not used for limiting the sequence or interdependence relationship of the functions executed by the devices, modules or units.
The invention provides a non-inductive channel intelligent networking identification system, which can guide a person who selects commodities or books to enter an access channel covered by signals of a signal detection device, wherein the non-inductive channel intelligent networking identification system enables a plurality of signal detection devices to be respectively arranged in a longitudinal channel space and a transverse channel space, so that the plurality of signal detection devices can identify the commodities or books selected by the person in the process of walking in the access channel formed by the longitudinal channel space and the transverse channel space, and settlement or book borrowing and returning is completed.
In an exemplary embodiment of the present invention, referring to fig. 1 and 3, the sensorless channel intelligent networking identification system includes a plurality of signal detection devices 10 for identifying the rf tag and a control device.
The signal detection device 10 includes two antennas 14, the control device outputs read-write signals to the two antennas 14, and the antennas 14 receive the read-write signals and transmit the read-write signals to the outside to complete reading/writing of the radio frequency tag in the radiation range.
The multiple signal detection devices of the non-inductive channel intelligent networking identification system are sequentially divided into a first signal detection device 11, a second signal detection device 12, a third signal detection device 13 and the like, and the rest is done in sequence.
With reference to fig. 1, the first signal detection device 11 is disposed in a longitudinal channel space 21, the two antennas a of the first signal detection device 11 are disposed on two sides of the longitudinal axis of the longitudinal channel space 21, and the radiation surfaces of the two antennas a are opposite to each other, so that the signals radiated by the two antennas a can completely cover the longitudinal channel space 21, and therefore the radio frequency tag on the commodity or book entering the longitudinal channel space 21 can be read and written by one or two of the two antennas a of the first signal detection device 11 at the same time, and the radio frequency tag information included in the radio frequency tag is obtained.
Specifically, the longitudinal passage space 21 includes two imaginary longitudinal side walls disposed on both sides of a central axis in the longitudinal direction of the longitudinal passage space 21. The two antennas a of the first signal detection device 11 are respectively disposed on the two longitudinal side walls, the antennas a are disposed along the longitudinal side walls and are disposed in the middle of the longitudinal side walls, so that the signal emitted by the antennas a can cover the entire longitudinal channel space 21, and the two antennas a are symmetrically disposed with respect to the central axis.
The second signal detection device 12 is disposed in a transverse channel space 22, the transverse channel space 22 is perpendicular to the longitudinal channel space 21, the transverse channel space 22 intersects the longitudinal channel space 21, and a space portion of the transverse channel space 22 in the extending direction of the longitudinal channel space 21 is referred to as an intersection space 221.
Specifically, the lateral channel space 22 includes two lateral sidewalls that are dummy and two longitudinal sidewalls that are dummy; the two lateral side walls of the lateral passage space 22 are parallel to the two longitudinal side walls of the longitudinal passage space 21, respectively, and the two longitudinal side walls of the lateral passage space 22 are perpendicular to the two longitudinal side walls of the longitudinal passage space 21.
The axis of one of the lateral side walls (called first lateral side wall) of the lateral passage space 22 coincides with the axis of one of the longitudinal side walls (called first longitudinal side wall) of the longitudinal passage space 21, and the other lateral side wall (called second lateral side wall) of the lateral passage space 22 is disposed outside the coverage of the longitudinal passage space 21, so that the lateral passage space 22 and the longitudinal passage space 21 together constitute an access passage having corners.
One of the antennas (referred to as a first antenna C) of the second signal detection device 12 is disposed in the cross space 221 formed by the crossing of the transverse channel space 22 and the longitudinal channel space 21, and the first antenna C is disposed at the center of the cross space 221. The first antenna C is disposed in a direction parallel to the longitudinal side walls of the transverse passage space 22, so that the first antenna C can radiate signals toward the two longitudinal side walls of the transverse passage space 22, that is, the first antenna C covers signals toward the two ends of the central axis of the longitudinal passage space 21, so that the signals radiated by the first antenna C can cover the crossing space 221.
The other antenna (referred to as the second antenna D) of the second signal detection device 12 is disposed on the second lateral side wall of the lateral channel space 22, and the arrangement direction of the second antenna D is the same as the extending direction of the second lateral side wall, the radiation surface of the second antenna D faces the first antenna C, the signal radiated by the second antenna D can cover the partial space (referred to as the protruding space 222) of the lateral channel space 22 except the cross space 221, and the protruding space 222 protrudes from the longitudinal channel space 21. Thus, the radiation signals of the first antenna C and the second antenna D can completely cover the cross passage space 22.
When the goods or books enter the longitudinal channel space 21, the radio frequency tags carried by the goods or books may form different angles with the two antennas a of the first signal detection device 11 and the two antennas of the second signal detection device 12, and the angle between the radio frequency tags and the antennas will affect the reading and writing of the radio frequency tags by the antennas, even the antennas cannot read the radio frequency tags within the coverage range.
Specifically, when the rf tag enters the longitudinal channel space 21 and the radiation surface of the rf tag is parallel to the radiation surface of the antenna a, the rf tag is said to be in the first state, that is, the radiation surface of the rf tag faces the radiation surface of the antenna a, and the radiation surface of the rf tag can completely receive the read-write signal transmitted by the antenna a, so that the read-write efficiency of the antenna a on the rf tag is maximized. When the radiation surface of the radio frequency tag is perpendicular to the radiation surface of the antenna a, the radio frequency tag is said to be in the second state, that is, the radiation surface of the radio frequency tag does not face the radiation surface of the antenna a, and a small number of the radiation surfaces of the radio frequency tag receive the read-write signals transmitted by the antenna, so that the performance of the antenna a for reading the radio frequency tag is poor. When the radio frequency tag is in the first state and the second state, the read-write performance of the antenna A on the radio frequency tag is between the first state and the second state. And, two antennas a are arranged in the longitudinal channel space 21, and the two antennas a can be mutually matched to improve the performance of reading the radio frequency tag with the radiation surface perpendicular to the radiation surface of the antenna a.
When the radio frequency tag enters the transverse channel space 22, the arrangement direction of the first antenna C of the second signal detection device 12 is perpendicular to the arrangement directions of the two antennas a of the longitudinal channel space 21, and the radiation surface of the first antenna C is perpendicular to the radiation surface of the radio frequency tag in the first state, that is, the radiation surface of the radio frequency tag does not face the radiation surface of the antenna C, so that the radiation surface of the radio frequency tag receives a small amount of read-write signals transmitted by the first antenna C, and the performance of the first antenna C in reading the radio frequency tag is poor; the radiation surface of the first antenna C is parallel to the radiation surface of the radio frequency tag in the second state, the radiation surface of the radio frequency tag can completely receive the read-write signal transmitted by the first antenna C, that is, the radiation surface of the radio frequency tag faces the radiation surface of the antenna C, and the read-write efficiency of the first antenna C to the radio frequency tag is the maximum. When the state of the radiation surface of the radio frequency tag is between the first state and the second state, the read-write performance of the first antenna C on the radio frequency tag is between the first state and the second state.
The arrangement direction of the second antenna D of the second signal detection device 12 is parallel to the arrangement direction of the two antennas a of the longitudinal channel space 21, so that the read-write performance of the second antenna D on each state of the radio frequency tag is the same as the read-write performance of the two antennas a of the longitudinal channel space 21 on each state of the radio frequency tag.
Therefore, when the rf tag enters the transverse passage space 22, the first antenna C has the best performance for reading the rf tag in the second state, the second antenna D has the best performance for reading the rf tag in the first state, and when the rf tag is in the first state and the second state, the first antenna C and the second antenna D can cooperate with each other to improve the performance for reading the rf tag. Therefore, when the rf tag enters the transverse channel space 22, the two antennas of the second signal detection device 12 cooperate with each other to effectively read the rf tag in various postures with the two antennas, thereby improving the read-write performance of the second signal detection device 12 on the rf tag.
The longitudinal passage space 21 and the lateral passage space 22 communicate with each other to form an access passage having a curved path. The entrance of the access duct is arranged on a lateral side wall of said first longitudinal passage space 21 not bordering on the lateral passage space 22, and the exit of the access duct is arranged on a second lateral side wall of the lateral passage space 22. The rf tag needs to pass through the crossing space 221 and the protruding space 222 of the longitudinal channel space 21 and the transverse channel in sequence, so that the rf tag can pass through the whole access channel, and in the process of entering the access channel, the two antennas of the first signal detection device 11 and the two antennas of the second signal detection device 12 can complete reading of the rf tags in various postures, so that the rf tag cannot be missed to be read.
In an exemplary embodiment of the present invention, the sensorless channel intelligent networking identification system includes a third signal detection device 13, where the third signal detection device 13 is also disposed in a longitudinal channel space (the longitudinal channel space is referred to as a second longitudinal channel space 23), and the arrangement manner of the two antennas E of the third signal detection device 13 in the longitudinal channel space is the same as the arrangement manner of the two antennas a of the first signal detection device 11 in the longitudinal channel space 21 (the longitudinal channel space is referred to as a first longitudinal channel space 21).
The first longitudinal passage space 21 and the second longitudinal passage space 23 are respectively disposed at two sides of the transverse passage space 22, a central axis of the first longitudinal passage space 21 in the longitudinal direction coincides with a central axis of the second longitudinal passage space 23 in the longitudinal direction, and the first longitudinal passage space 21 and the second longitudinal passage space 23 are communicated with each other through a crossing space 221 of the transverse passage space 22. The second longitudinal passage space 23 may extend the length of the access passage, and the exit of the access passage is no longer arranged on the second side wall of the transverse passage space 22, but the exit of the access passage is arranged on the transverse side wall of the second longitudinal passage space 23, which is not connected to the transverse passage space 22. The length of the access passage space is extended through the second longitudinal passage space 23, so that the three signal detection devices 10 can accurately acquire the number of the rf tags entering the access passage and read the rf tag information contained in the rf tags.
In one embodiment, referring to fig. 2, the second longitudinal channel space 23 connects the ends of the transverse channel spaces 22 that are not adjacent to the first longitudinal channel space 21, and the longitudinal axis of the second longitudinal channel space 23 coincides with the longitudinal axis of the transverse channel space 22.
The first antenna C and the second antenna D of the second signal detection device 12 disposed in the transverse channel space 22 are disposed in the cross space 221. Specifically, the first antenna C and the second antenna D are respectively disposed on two perpendicular dummy sidewalls of the cross space. Wherein the first antenna C is disposed on the longitudinal side wall of the transverse passage space 22 away from the first longitudinal passage space 21, and the first antenna C radiates signals facing the first longitudinal passage space 21. The second antenna D is disposed on a lateral side wall of the lateral passage space 22 close to the first longitudinal passage space, and the second antenna D radiates signals facing the lateral passage space 22 and the second longitudinal passage space 23. Thus, the first longitudinal passage space 21, the transverse passage space 22 and the second longitudinal passage space constitute an L-shaped access passage.
In one embodiment, a plurality of longitudinal channel spaces and a plurality of transverse channel spaces may be disposed in the sensorless channel intelligent networking identification system. The signal detection devices 10 arranged in each longitudinal channel space are deployed according to the deployment manner of the first signal detection device 11 in the first longitudinal channel space 21, and the signal detection devices arranged in each transverse channel space are deployed according to the deployment manner of the second signal detection device 12 in the transverse channel space 22. Preferably, the cross space of each transverse passage space communicates with both longitudinal passage spaces, and the arrangement of the transverse passage spaces and the longitudinal passage spaces is referred to the arrangement between the first longitudinal passage space 21, the transverse passage space 22 and the second longitudinal passage space 23.
In an exemplary embodiment of the present invention, the antenna of the signal detection device includes two antenna elements 14, each antenna element 14 is electrically connected to a reader/writer 33 of the control device, and the reader/writer 33 is configured to control the operation of the corresponding antenna element 14.
The two antennas of the signal detection device are respectively a third antenna and a fourth antenna, the two antenna oscillators of the third antenna are respectively a first antenna oscillator and a second antenna oscillator, and the two antenna oscillators of the fourth antenna are respectively a third antenna oscillator and a fourth antenna oscillator. The four antenna elements are respectively connected with the reader-writer 33, the reader-writer 33 respectively controls the work of the four antenna elements, and the working frequencies of the four antenna elements are the same or different.
The reader-writer 33 improves the read-write performance of the antenna oscillator on the radio frequency tag in the channel space by setting the working modes of the four antenna oscillators of the signal detection device. The reader-writer 33 can control the four antenna elements to respectively work independently or simultaneously, and specifically, the four antenna elements work in three ways:
firstly, single antenna element polling work: the four antenna oscillators sequentially perform polling work, and the first antenna oscillator, the second antenna oscillator, the third antenna oscillator and the fourth antenna oscillator sequentially perform polling work.
Secondly, single antenna polling work: the two antennas sequentially perform polling operation, that is, the first antenna element and the second antenna element of the third antenna simultaneously operate, the third antenna element and the fourth antenna element of the fourth antenna simultaneously operate, and the two antennas sequentially perform polling operation.
Thirdly, two antenna elements of different antennas work in combination: the first antenna element of the third antenna and the third antenna element of the fourth antenna work simultaneously, and the second antenna element of the third antenna and the fourth antenna element of the fourth antenna work simultaneously, so that polling work is realized.
Therefore, the reader-writer 33 performs polling operation by controlling the four antenna elements 141 of the two antennas 14 of the signal detection device according to the three methods, so that the induction blind areas of the antenna elements are complemented, the omnidirectional reading of the radio frequency tag entering the channel space 20 is realized, the problem of the blind area inside the channel space 20 is solved, and no induction blind area exists in the channel space 20.
In the exemplary embodiment of the present invention, each signal detection device 10 works at a frequency, and the working frequencies of the signal detection devices 10 are not consistent. For example, the first signal detection device 11 operates at 11.0592MHz, the second signal detection device 12 operates at 12MHz, and the third signal detection device 13 operates at 13.56 MHz. The frequency points of the read/write signals transmitted from the antennas of the signal detection device 10 are modulated by the corresponding reader/writer 33. Therefore, each signal detection device 10 works at different frequency points, so that when there is a frequency offset due to the problem that some radio frequency tags are stacked one on another, and when one of the signal detection devices 10 cannot read and write a radio frequency tag with an offset frequency (which is not consistent with the frequency point of the signal detection device 10), the signal detection device 10 with the same frequency point as the offset frequency radio frequency tag can read and write.
In one embodiment, in conjunction with fig. 4, each antenna 14 further includes two tuning circuits 142, each tuning circuit 142 electrically coupled to one of the antenna elements 141. The tuning circuit 142 includes a plurality of resonant circuits 1421 and at least one switching circuit 1422. The plurality of resonant circuits 1421 are connected in series to form a resonant tank, and at least one resonant circuit 1421 in the resonant tank is connected in parallel with a switch circuit 1422, and the switch circuit 1422 is controlled by the reader/writer 33 to be turned on/off to adjust the power and the resistance of the resonant tank. The antenna element 141 is connected in series to the resonant circuit, and the working frequency point of the antenna element 141 is changed under the influence of the power and the resistance of the resonant circuit, that is, the working frequency point of the antenna element 141 can be changed by controlling the on/off of the switch circuit 1422 to match with the working frequency point of the reader/writer 33, so that the antenna element 141 can identify the radio frequency tags with different frequency points in the channel space 20, and particularly, the problem of frequency offset of the radio frequency tags caused by stacking a plurality of radio frequency tags together can be solved.
The reader 33 of the control device is electrically connected to the switch circuit 1422, and the reader 33 outputs a control signal to the switch circuit 1422, and controls the on/off of the switch circuit 1422 through the control signal. In some embodiments, the reader/writer 33 controls the on/off of the switch circuit 1422 by controlling the high/low level of the output control signal.
It can be understood that the switch circuits 1422 controlled by the reader/writer 33 are respectively configured for the plurality of resonant circuits 1421, so that the reader/writer 33 can selectively control the on/off of one or more resonant circuits 1421 to control the antenna element 1412 to operate at different frequency points. Therefore, in some embodiments, the resonant circuit includes a plurality of resonant circuits 1421, each resonant circuit 1421 is connected in parallel to a switch circuit 1422, and the reader 33 can change the operating frequency point of the antenna element 141 by controlling on/off of the plurality of switch circuits 1422 connected in parallel to the resonant circuits 1421, so that the antenna element 141 has a plurality of operating frequency points.
The resonant circuit 1421 is composed of a capacitor and a resistor connected in parallel, and the resistance values of the resistors of the plurality of resonant circuits 1421 forming the resonant circuit are equal to or different from the capacitance values of the capacitors. When the switch circuit 1422 is turned on, the switch circuit 1422 is equivalent to a short circuit, and the resistance and the capacitance of the resonant circuit 1421 connected in parallel to the switch circuit 1422 do not pass current, so that the capacitance of the resonant circuit is increased, and the operating frequency of the antenna element 141 is reduced; when the switch circuit 1422 is turned off, the resistor and the capacitor of the resonant circuit 1421 connected in parallel to the switch circuit 1422 are turned on, so as to reduce the capacitance of the resonant circuit and increase the operating frequency of the antenna element 141. Therefore, the power of the resonant circuit is influenced by changing the capacitance value in the resonant circuit, so that the working frequency point of the antenna element 141 of the coil structure is changed, and the antenna element 141 works at different frequency points in different time slots.
In the exemplary embodiment of the present invention, the two antennas 14 of the signal detection device 10 are disposed on a housing, and the antennas and the housing may form a security door. The housing is provided with a vibrator groove for embedding two antenna elements 141 of the antenna 14, and the two antenna elements 141 are embedded in the vibrator groove in a laminated manner. The two safety doors are arranged in the passage space 20 in the form of a corresponding arrangement of antennas 14 so that the signals emitted by the antennas arranged in the safety doors can cover the passage space 20. Preferably, the housing is made of acryl or a plastic material.
In an exemplary embodiment of the present invention, referring to fig. 3, the control device includes a vital signs sensing device 31, a controller 32, a reader 33, a console 34, and a gate reader 35.
Specifically, the control device is provided with a vital sign sensing device 31, a controller 32 and a reader 33 corresponding to each signal detection device 10. The vital sign sensing device 31 is disposed at the front end of the channel space 20, so that when a person enters the channel space 20, a corresponding vital sign signal can be detected to drive the controller 32 to work, and the controller 32 sends a driving signal to drive the reader-writer 33 to work after working, thereby driving the two antennas 14 to work. Preferably, one vital signs sensing device 31 is arranged per channel space 20.
The controller 32 of each signal detection device 10 is electrically connected to a console 34, and the console 34 is further connected to an entrance guard reader/writer 35 for recognizing an identification signal of a person entering the passage space 20.
After the people have finished picking up the goods or books from the shopping mall or the library, when entering the access passage formed by the plurality of passage spaces 20, the access control reader/writer 35 obtains the corresponding identity information through the identity tag carried by the shopper or the book borrower and obtains the account information or the historical book borrowing information bound by the identity information.
When a shopper or a book borrowing person enters each channel space 20, after the vital sign sensing device 31 corresponding to the channel space 20 detects a vital sign signal, the driving controller 32 operates, the controller 32 sends a driving signal to the reader-writer 33, and after the reader-writer 33 receives the driving signal, the reading-writing signal is simultaneously output to one antenna element 141 or two antenna elements 141 of the two antennas 14, so that the corresponding antenna element 141 transmits the reading-writing signal to the channel space 20.
After receiving the corresponding read-write signal, the rf tag in the channel space 20 returns a corresponding tag signal to the antenna element 141, the antenna element 141 outputs the received tag signal to the controller 32 through the reader 33, the controller 32 analyzes the commodity information or the book information represented by the tag signal, and the controller 32 outputs the obtained commodity information or the book information to the console 34.
When the shopper or the book borrower leaves the access passage formed by the passage spaces 20, the console 34 performs deduplication processing on the same commodity information or book information about the same shopper or the book borrower acquired by the signal detection devices 10, and only one commodity information or book information is reserved.
The console 34 associates the commodity information with account information to which the identity information of the shopper is bound, to perform a commodity settlement operation.
Or, the console 34 associates the book information with the historical book borrowing information of the book borrower, and if the book information is not recorded in the historical book borrowing information, determines that the book corresponding to the book information is not borrowed by the book borrower, and the book borrower performs a book borrowing operation and records the book information as new book borrowing information in the historical book borrowing information of the book borrower; and if the book information is recorded in the historical book borrowing information before, judging that the book corresponding to the book information is borrowed by a book borrower and returned, and removing the book information from the historical book borrowing information of the book borrower and returned by the book borrower and the returned book.
Thus, when the entrance or exit of a mall or library is provided with the entrance or exit of the entrance or exit passage composed of the passage spaces 20, the non-contact and non-inductive shopping or book borrowing and returning operation can be realized. The whole process does not need any staff, the working efficiency of a market or a library is improved, the manual use is reduced, and the shopping or book borrowing and returning efficiency of a shopper and a book borrowing and returning person is saved.
In one embodiment, each signal detection device 10 corresponds to two vital sign sensing devices 31, the two vital sign sensing devices 31 are respectively disposed at the head and tail ends of the channel space 20, the vital sign sensing device 31 disposed at the front end of the channel space 10 outputs the detected vital sign sensing signal to the controller 32, and the controller 32 drives the corresponding signal detection device 10 to work, so as to represent that a person enters the corresponding channel space; the vital sign sensing device 31 disposed at the end of the channel space 10 outputs the detected vital sign sensing signal to the controller 32, and the controller 32 drives the corresponding signal detection device 10 to stop working, so as to represent that a person walks out of the corresponding channel space. And the vital sign sensing device 31 includes two vital sign sensors, which are respectively disposed on two sidewalls of the corresponding channel space 20 in the longitudinal direction. The vital signs sensors corresponding to the first signal detecting device 11 have four vital signs sensors in two groups, which are a1, a2, b1 and b2, wherein a1 and a2 are in one group, and b1 and b2 are in one group; the vital signs sensors corresponding to the second signal detecting device 12 have four vital signs sensors in two groups, which are c1, c2, d1 and d2, wherein c1 and c2 are in one group, and d1 and d2 are in one group; the vital signs sensors corresponding to the third signal detecting device 13 have four vital signs sensors in two groups, i.e. e1, e2, f1 and f2, wherein e1 and e2 are in one group, and f1 and f2 are in one group. Preferably, the vital sign sensor is an infrared sensing device.
In a further embodiment, a vital sign sensing device 31 is respectively disposed at the head and tail ends of an access passage formed by a plurality of passage spaces 20, and a common vital sign sensing device 21 is disposed between two adjacent passage spaces 20 to obtain vital sign signals of people entering and exiting the corresponding passage spaces 20, so as to start the corresponding signal detection device 10.
In one embodiment, the controller 32 is not provided for each signal detection device 10, and the console 34 is directly connected to the reader 33 corresponding to each signal detection device 10, so as to simplify the technical scheme of the non-inductive channel intelligent networking identification system of the present invention, reduce the number of used electrical components, and save the cost.
In summary, the signal detection devices of the sensorless passage intelligent networking identification system of the present invention are respectively disposed in a passage space, and each signal detection device can identify the rf tag entering the passage space corresponding thereto, so that after passing through an access passage formed by a plurality of passage spaces, all the rf tags entering the access passage can be accurately and completely read, thereby facilitating the sensorless shopping or book borrowing and returning of the goods or books corresponding to the rf tags, and making the life intelligent without manual operation.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions of the present invention are mutually replaced to form the technical solution.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (10)
1. The utility model provides a noninductive passageway intelligence network deployment identification system which characterized in that includes:
a plurality of signal detection devices for identifying radio frequency tags, each signal detection device comprising two antennas for performing spatial signal coverage; wherein the content of the first and second substances,
the first signal detection device is respectively arranged at two sides of the longitudinal channel space longitudinal axis by two antennae, and the two antennae face each other to cover signals for the longitudinal channel space;
the second signal detection device is arranged in a transverse channel space range which is vertically crossed with the longitudinal channel space, a first antenna of the second signal detection device is arranged in the crossed space of the longitudinal channel space and the transverse channel space and covers signals facing to the two end directions of the longitudinal axis, and a second antenna of the second signal detection device is arranged in the transverse channel space and covers signals to the channel space in the direction vertical to the longitudinal axis;
and the control device is electrically connected with each signal detection device so as to control the signal detection device to carry out signal coverage to read/write the radio frequency tag.
2. The channel-less intelligent networking identification system of claim 1 wherein the longitudinal channel space and the transverse channel space together define an entryway for the radio frequency tag having a turn path.
3. The sensorless channel intelligent networking identification system of claim 1 further comprising a third signal detection device also disposed in one longitudinal channel space, wherein the antennas of the first signal detection device and the third signal detection device are disposed in the longitudinal channel spaces on both sides of the first antenna coverage signal of the second signal detection device, respectively.
4. The sensorless channel intelligent networking identification system of claim 1 wherein the sensorless channel intelligent networking identification system corresponds to a plurality of transverse channel spaces, each transverse channel space corresponding to a deployment of the second signal detection device.
5. The system according to claim 4, wherein a plurality of longitudinal channel spaces and a plurality of transverse channel spaces corresponding to the system are disposed along the longitudinal axis, each longitudinal channel space is disposed according to the disposition of the first signal detection device, and a corresponding signal detection device is disposed, and each transverse channel space is disposed between two longitudinal channel spaces.
6. The system according to any one of claims 1 to 5, wherein each signal detection device is provided with a vital sign sensing device connected to the control device, and configured to detect the vital sign signal, and drive the signal detection device configured therewith to implement signal coverage when the vital sign signal is acquired.
7. The system according to claim 6, wherein the control device is provided with a reader/writer corresponding to each signal detection device, and the reader/writer is configured to output a read/write signal to the antenna; the control device is provided with a controller which is controlled by the vital sign signals, and the controller sends driving signals to drive the reader-writer to work when receiving the vital sign signals.
8. The system according to claim 7, wherein the control device is provided with a console for controlling the controller, and the console updates the radio frequency tag information obtained by all the signal detection devices with the historical radio frequency tag information in the database.
9. The system according to claim 1, wherein the antenna comprises two antenna elements, each of the two antenna elements is electrically connected to a tuning circuit, and the tuning circuit is controlled by the control device to change the operating frequency of the corresponding antenna element.
10. The system according to claim 9, wherein the antenna is disposed on the housing, and the two antenna elements are stacked and embedded in the element groove of the housing.
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