CN106778420B - Multi-channel radio frequency identification device linkage method and system - Google Patents
Multi-channel radio frequency identification device linkage method and system Download PDFInfo
- Publication number
- CN106778420B CN106778420B CN201611199584.5A CN201611199584A CN106778420B CN 106778420 B CN106778420 B CN 106778420B CN 201611199584 A CN201611199584 A CN 201611199584A CN 106778420 B CN106778420 B CN 106778420B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- frequency identification
- antenna
- token
- frequency antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G06K7/10019—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10079—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 resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Toxicology (AREA)
- General Physics & Mathematics (AREA)
- Finance (AREA)
- Business, Economics & Management (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a multi-channel radio frequency identification device linkage method and a multi-channel radio frequency identification device linkage system, wherein the method comprises the following steps: receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna with a token in the interference group; checking whether a radio frequency antenna connected with a local radio frequency identification device is a radio frequency antenna with a token in the interference group; and when the first radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token, determining whether to perform identification operation of the first radio frequency antenna according to the working state of the local radio frequency identification device. The invention can reduce the interference of other nearby radio frequency identification devices and improve the efficiency of radio frequency identification.
Description
Technical Field
The invention relates to the technical field of radio frequency identification, in particular to a linkage method and a linkage system of a multi-channel radio frequency identification device.
Background
The radio frequency identification technology is a non-contact automatic identification technology, obtains related data in a radio frequency identification electronic tag by receiving and sending radio frequency signals through a radio frequency identification device, is widely applied to the fields of the Internet of things and the like, and particularly in the field of intelligent transportation, and performs read-write operation on automobile electronic tags (namely radio frequency identification electronic tags) on passing vehicles through the radio frequency identification technology so as to realize automatic identification and management of the vehicles. The radio frequency identification device sends a radio frequency carrier signal containing ASK modulation information to one or more automobile electronic identifiers, the automobile electronic identifiers acquire energy from the radio frequency carrier signal and start working, the automobile electronic identifiers identify data information contained in the radio frequency signal and send corresponding response signals to the radio frequency identification device, and then read-write operation of the automobile electronic identifiers is completed.
As shown in fig. 1, a portal frame is arranged at a designated position of a road, a radio frequency identification device (not shown) and radio frequency antennas matched with the number of lanes are installed on the portal frame, each radio frequency antenna is responsible for receiving and transmitting radio frequency signals of one lane, an electronic automobile identifier is installed on a front windshield of a vehicle running on the road, basic information of the vehicle is stored in the electronic automobile identifier, and the electronic automobile identifier is matched with the radio frequency identification device to identify the vehicle. Under the free running mode, the radio frequency identification device ensures that only one connected radio frequency antenna is used for communication each time, and the identification operation of vehicles coming and going on a lane corresponding to one radio frequency antenna is completed. In the case of multiple lanes, multiple rfid devices are required to be installed to monitor all lanes. However, when a plurality of rfid devices are installed side by side, and one of the rfid devices performs a recognition operation on a vehicle in a corresponding lane through an rf antenna, if rf antennas connected to other rfid devices are also located in adjacent lanes (lanes close together, which may be more than 2 lanes according to the width of the lane and the power of the rf antenna) to transmit rf signals, the rf signals transmitted and received by the rf antennas in the adjacent lanes interfere with each other due to the inherent characteristics of the rfid technology, and thus cause a failure in the rfid or a serious reduction in the efficiency.
However, in the process of ensuring remote identification, the width of a lobe emitted by the radio frequency antenna is difficult to adapt to the width of a lane, the adjacent lane is often covered, and in addition, the radio frequency identification efficiency is seriously reduced because the characteristic of the radio frequency antenna is inevitably accompanied with the generation of a side lobe. Meanwhile, the radio frequency identification device and the radio frequency identification device are relatively independent, and a method and a system for realizing linkage work between the radio frequency identification device and the radio frequency identification device need to be designed to ensure that the radio frequency identification device and the radio frequency identification device are not interfered with each other.
Disclosure of Invention
The invention aims to provide a method and a system for linking a plurality of paths of radio frequency identification devices, which solve the technical problems of mutual conflict and low radio frequency identification efficiency caused by the working of the radio frequency identification devices and the radio frequency identification devices in the prior art.
In order to solve the technical problem, the linkage method of the multi-channel radio frequency identification device comprises the following steps:
receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna with a token in the interference group;
checking whether a radio frequency antenna connected with a local radio frequency identification device is a radio frequency antenna with a token in the interference group; the interference group comprises designated radio frequency identification antennas, and the radio frequency identification antennas generate interference with each other; the radio frequency identification device comprises a local radio frequency identification device and other radio frequency identification devices, wherein the local radio frequency identification device is a radio frequency identification device for running a specific step, and the other radio frequency identification devices are radio frequency identification devices relative to the other radio frequency identification devices on the same section except the local radio frequency identification device;
when a first radio frequency antenna connected with the local radio frequency identification device is a radio frequency antenna with a token, determining whether to perform identification operation of the first radio frequency antenna according to the working state of the local radio frequency identification device;
and when the first radio frequency antenna identification operation is finished or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices.
As a further improvement of the above-mentioned multi-path rfid device linkage method of the present invention, the token information is transferred by multicast to the rfid devices in the same subnet group.
As a further improvement of the above-mentioned multi-path rfid device linkage method of the present invention, when the rf antenna connected to the local rfid device is not in the interference group or the rf antenna having the token is not connected to the local rfid device, the checking of the token information is directly ended.
As a further improvement of the above-mentioned multi-path rfid device linkage method of the present invention, the first rfid operation is performed or skipped according to the working status of the rf antenna connected to the local rfid device except the first rf antenna and/or the traffic flow rate on the lane corresponding to the first rf antenna.
In order to solve the above technical problem, the present invention provides a multi-channel rfid linkage system, comprising:
the receiving unit is used for receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna with a token in the interference group; the interference group comprises designated radio frequency identification antennas, and the radio frequency identification antennas generate interference with each other; the radio frequency identification device comprises a local radio frequency identification device and other radio frequency identification devices, wherein the local radio frequency identification device is a radio frequency identification device for running a specific step, and the other radio frequency identification devices are radio frequency identification devices relative to the other radio frequency identification devices on the same section except the local radio frequency identification device;
the checking unit is used for checking whether the radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token in the interference group;
the execution unit is used for determining whether to carry out identification operation of the first radio frequency antenna according to the working state of the local radio frequency identification device when the first radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token; and when the first radio frequency antenna identification operation is finished or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices.
As a further improvement of the above-mentioned multi-channel rfid device linkage system of the present invention, the token information is transmitted to the rfid devices in the same subnet group by multicast.
As a further improvement of the above-mentioned multi-channel rfid device linkage system of the present invention, the viewing unit further includes: and when the radio frequency antenna connected with the local radio frequency identification device is not in the interference group or the radio frequency antenna with the token is not connected with the local radio frequency identification device, directly finishing the checking of the token information.
As a further improvement of the above-mentioned multi-channel rfid device linkage system of the present invention, the executing unit further includes: and determining to perform a first radio frequency antenna identification operation or skip the first radio frequency antenna identification operation according to the working state of a radio frequency antenna connected with the local radio frequency identification device except the first radio frequency antenna and/or the traffic flow on a lane corresponding to the first radio frequency antenna.
Compared with the prior art, the method and the device have the advantages that adjacent radio frequency antennas which generate interference are arranged in an interference group, token information of a specific interference group sent by other radio frequency identification devices is received, and the receiving and sending authority of the radio frequency antennas in the interference group is determined according to the token information so as to realize reasonable distribution management of the radio frequency identification devices on the connected radio frequency antennas. The invention can reduce the interference of other nearby radio frequency identification devices and improve the efficiency of radio frequency identification.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of multiple RFID devices interfering with each other.
FIG. 2 is a flow chart of a method for linking multiple RFID devices according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of rfid according to an embodiment of the present invention.
FIG. 4 is a flow chart of a method for linking multiple RFID devices according to an embodiment of the present invention.
FIG. 5 is a block diagram of a multi-channel RFID device linkage system in accordance with one embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
It should be noted that the same reference numbers or symbols may be used in different embodiments, but these do not represent an absolute relationship in structure or function. Also, the references to "first", "second", "third", and the like in the embodiments do not represent absolute differences in structure or function, and these are merely for convenience of description.
The main reasons that the rf antennas corresponding to adjacent lanes interfere with each other include: 1. the radio frequency identification device leaks an interference signal with certain power through a side lobe of the radio frequency antenna, and the adjacent radio frequency identification device receives the interference signal through the side lobe of the radio frequency antenna. 2. The radio frequency identification electronic tag is influenced by the plurality of radio frequency antennas, and when the radio frequency identification electronic tag is in a lobe range of radio frequency signals sent by the plurality of radio frequency antennas, namely the radio frequency identification electronic tag is in an overlapping area of radio frequency receiving and sending, the radio frequency identification electronic tag is superposed with carrier waves and commands sent by the plurality of radio frequency identification devices, so that the radio frequency identification electronic tag has the conditions of no response, disordered state and the like. At this time, the rfid device cannot receive the data returned by the correct rfid tag, and the rfid device cannot normally identify and manage the vehicle accurately and without omission. Therefore, the best implementation mode is that when one radio frequency identification device carries out identification work, other radio frequency identification devices avoid the time period to carry out identification work. However, in particular, mutual interference between the rf antennas connected to all the rfid devices may not occur, for example, if the rf antennas are far away from the lane, the overall efficiency of lane identification may be reduced if only one rf antenna is ensured to operate. In the embodiment of the invention, special distribution management is mainly carried out on the boundary radio frequency antennas of adjacent radio frequency identification devices, so that the effect that the radio frequency identification devices and the radio frequency identification devices do not interfere with each other is achieved.
As shown in fig. 2, a flow chart of a multi-channel rfid device linkage method according to an embodiment of the present invention is shown. The linkage method of the multi-channel radio frequency identification device specifically comprises the following steps:
step S1, receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna having a token in the interference group; as shown in fig. 3, a plurality of rfid devices are installed on a cross section of a road, and are generally installed in parallel on the same portal frame, and correspond to corresponding roads, respectively, to perform an identification operation on vehicles on the road, where the identification operation is to transmit a radio frequency signal through a specific radio frequency antenna and receive a radio frequency signal fed back by an electronic identifier installed on a vehicle.
Taking fig. 3 as an example, the first rfid device 10, the second rfid device 20, and the third rfid device 30 are mounted on the same cross section. The first radio frequency identification device 10 is respectively connected with a radio frequency antenna 11, a radio frequency antenna 12 and a radio frequency antenna 13, the second radio frequency identification device 20 is respectively connected with a radio frequency antenna 21, a radio frequency antenna 22 and a radio frequency antenna 23, the third radio frequency identification device 30 is respectively connected with a radio frequency antenna 31, a radio frequency antenna 32 and a radio frequency antenna 33, and each radio frequency antenna is responsible for identification operation of one vehicle. The rfid device only performs the identification operation through one rf antenna each time, for example, the rf identification device 10 first identifies the vehicle on the corresponding road through the rf antenna 11, and then the rf antenna 12 and the rf antenna 13, because the rf antenna 11, the rf antenna 12 and the rf antenna 13 are all connected to the rf identification device 10, the time-sharing management is easy to implement, but the first rf identification device 10, the second rf identification device 20 and the third rf identification device 30 are relatively independent from each other, and therefore a mechanism needs to be designed to ensure the linkage among multiple paths of the rf identification devices.
In the embodiment of the invention, the specified radio frequency antennas are grouped into an interference group, and the radio frequency antennas grouped into the same interference group are the radio frequency antennas which can generate interference with each other, but the radio frequency antennas in the interference group are not necessarily ensured to be connected with the same radio frequency identification device. Taking fig. 3 as an example, the radio frequency antennas 13 and 21 are organized in the interference group 41, because interference may be generated between the radio frequency antennas 13 and 21, and the radio frequency antenna 12 is not in the interference group 41, because simultaneous operation between the radio frequency antenna 12 and the radio frequency antenna 13 is impossible, and the radio frequency antenna 12 and the radio frequency antenna 21 are far apart from each other, there is no overlapping of beams, and there is no interference, so that only the radio frequency antenna 13 and the radio frequency antenna 21 are in the interference group 41. The interference group 42 includes the rf antenna 23, the rf antenna 31, and the rf antenna 32, and it should be noted that the grouping of the interference group 42 is a special case, and there are three or more groups of the rf antennas in the interference group, for example, a road is narrow, a beam width emitted by the rf antenna is wide, and may cover two or more lanes, or a transmit-receive power of the rf antenna is specially increased to deal with more vehicle identifications. Taking the rf antenna 32 as an example, assume that its beam already covers the lane corresponding to the rf antenna 23, and therefore may generate interference to the rf antenna 23, and the rf antenna 23, the rf antenna 31, and the rf antenna 32 interfere with each other, so the rf antenna 32 is also encoded in the interference group 42 and is constrained by the control manner corresponding to the interference group 42.
As can be seen from the above, the plurality of rf antennas connected by the rfid device may belong to a plurality of interference groups, and from the perspective of the rf antenna connected by the second rfid device 20, the rf antenna 21 is grouped in the interference group 41, the rf antenna 23 belongs to the interference group 42, and the rf antenna 22 does not belong to any interference group, so that when the second rfid device 20 polls the rf antenna 22, the identification operation can be directly started. From the perspective of the rf antenna connected to the first rfid device 10, the rf antennas 11 and 12 do not interfere with any rf antenna, so they do not belong to any interference group, while the rf antenna 13 is grouped in the interference group 41, and so on for the rf antenna connected to the third rfid device 30.
Because the rf antennas in each interference group may interfere with each other, each interference group includes a token, which may be represented as a piece of tag information for tagging an authority possessed by a certain rf antenna in the interference group to perform an identification operation, where the identification operation includes transceiving a specified rf signal through the rf antenna. When a certain radio frequency antenna in the interference group possesses the token, the identification operation can be performed. Certain radio frequency antenna information of the token tag is put in the token information and is transmitted between the radio frequency identification devices, and as described above, one interference group corresponds to one token, and a group of token information is needed to correspond to the interference group. The corresponding interference group in the token information can be inquired to know which radio frequency antenna in the interference group the token information is used for managing, and the radio frequency antenna information with the token in the token information can be inquired to know which radio frequency antenna in the interference group can perform identification operation.
And receiving token information sent by other radio frequency identification devices, namely acquiring the update of the radio frequency antenna information in the interference group by other radio frequency identification devices. The specific steps of the multi-channel radio frequency identification device linkage method are operated in any independent radio frequency identification device, so that the radio frequency identification device corresponding to the specific steps is a local radio frequency identification device, and other radio frequency identification devices are radio frequency identification devices except the local radio frequency identification device on the same cross section. Preferably, the token information sent by other rfid devices is received by multicast, and the token information is passed and sent to the rfid devices in the same subnet group by multicast. Here, the same subnet group may be rfid devices of the same cross section, and specifically, the first rfid device 10, the second rfid device 20, and the third rfid device 30 are connected in one subnet through a router having a multicast function, which has the advantages of not requiring point-to-point communication, not requiring a communication mode between two specific rfid devices, and reducing unnecessary communication requests. In further embodiments, in receiving token information sent by other rfid devices, the other rfid devices may specifically refer to rfid devices adjacent to the local rfid device, because in road applications, the rf antennas connected to the local rfid devices are unlikely to belong to an interference group together with the rf antennas connected to the non-adjacent rfid devices, and therefore, the token information corresponding to the interference group associated with the non-adjacent rfid devices generally has no meaning for the local rfid devices to discard directly.
Step S2, checking whether the radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token in the interference group; when receiving token information sent by other radio frequency identification devices, the user needs to check the content of the received token information to determine whether the working state of the radio frequency antenna of the local radio frequency identification device is affected. It is mainly checked whether the rf antenna in the interfering group that holds the token is specifically the one to which the local rfid device is connected. If so, the other RFID devices tell the local RFID device that particular RFID antenna is available. Taking fig. 3 as an example, if the first rfid device 10 receives a token message sent by the second rfid device 20, the checking token message indicates that the interfering group 41 is related to the token message, and the rfid antenna having the token is identified by the rfid antenna 13, which indicates that the first rfid device 10 can transmit and receive rf signals through the rfid antenna 13. Specifically, it is also possible that the interference group corresponding to the received token information does not relate to the interference group in which the radio frequency antenna connected to the local rfid device is located (for example, the first rfid device 10 receives the token information of the second rfid device 20 or the third rfid device 30 about the interference group 42), or although the radio frequency antenna connected to the local rfid device is in the interference group corresponding to the token information, the token is grasped on the radio frequency antenna connected to the other radio frequency identification device in the interference group (for example, the first rfid device 10 receives the token information of the second rfid device 20 about the interference group 41, but the radio frequency antenna having the token marked in the token information is the radio frequency antenna 21), then the other radio frequency identification devices actually tell the local rfid device that a certain radio frequency antenna connected to the local rfid device cannot start the identification operation, at this time, the checking of the token information may be directly ended, the token information does not give an authority to a certain radio frequency antenna of the local radio frequency identification device, the token information may be discarded, and other token information received later may be continuously checked.
Step S3, when the first rf antenna connected to the local rfid device is the rf antenna with the token, determining whether to perform the identification operation of the first rf antenna according to the operating state of the local rfid device. Taking fig. 3 as an example, when the first rfid device 10 receives the token information about the interfering group 41 and the rf antenna in the token information that owns the token is the rf antenna 13, then the rf antenna 13 has the right to transmit and receive rf signals. When receiving the token information, the first rfid device 10 may have different conditions according to actual situations, for example, the first rfid device 10 performs an identification operation through the rf antenna 11 or the rf antenna 12 at this time, or the first rfid device 10 immediately ends the identification operation of the rf antenna 11 or the rf antenna 12 at this time and is in an idle state, or the first rfid device 10 just prepares to poll the rf antenna 13 (it should be noted that the rfid device performs the identification operation through only one rf antenna each time, and performs alternate identification operations between the rf antennas in a polling manner, during the actual application, when polling the rf antenna of the interfering group, if the token information of the related authority is not received, it may directly poll the next rf antenna, or delay for a preset time according to the actual need, waiting for relevant token information that may be received). Therefore, preferably, the first rf antenna identification operation is performed or skipped according to the operating state of the rf antenna connected to the local rfid device except the first rf antenna and/or the traffic flow rate of the lane corresponding to the first rf antenna. Still taking the rf antenna 13 of the first rfid device as an example, when the first rfid device 10 is in an idle state or just polls the rf antenna 13, the identification operation of the rf antenna 13 can be directly started; when the first rfid device 10 is performing the identification operation through the rf antenna 11 or the rf antenna 12, the identification operation of the rf antenna 13 may be skipped directly (i.e., the authority assigned corresponding to the token information is not used), and the identification operation of the rf antenna 11 or the rf antenna 12 is continuously maintained; or under the condition that the identification operation of the radio frequency antenna 11 or the radio frequency antenna 12 is about to be completed, the token is not released temporarily, the token is occupied for a period of time, and the identification operation of the radio frequency antenna 13 is started after the identification of the radio frequency antenna 11 or the radio frequency antenna 12 is finished; or, according to the traffic flow on the lane corresponding to the rf antenna 13 (for example, the traffic flow is obtained by a vehicle sensing device such as an electromagnetic ball and an inductance coil installed at a distance in front of the rf identification device), if the traffic flow reaches a threshold value, the identification operation of the rf antenna 11 or the rf antenna 12 is directly ended, and the identification operation of the rf antenna 13 is started. The above-described modes are merely illustrative and various modes are listed, but the present invention is not limited to this, and various control modes can be made by comprehensive analysis of various conditions.
As described above, the local rfid device can perform the first rfid operation or skip the first rfid operation according to actual conditions, so that when the first rfid operation is completed or skipped, the local rfid device cannot occupy the corresponding token, because long-term occupation of the token may cause that other rf antennas in the interference group cannot normally perform the identification operation for a long time. The method for releasing the token updates the radio frequency antenna having the token in the token information to other radio frequency antennas in the interference group, and sends the updated token information to other radio frequency identification devices, preferably in a multicast manner, where the process for releasing the token is actually a process for transferring the token to other radio frequency antennas. In a specific embodiment, the radio frequency antennas in each interference group are numbered, and the token may be transferred in an ascending or descending manner, for example, the radio frequency antennas 23, 31, and 32 in the interference group 42 are numbered as 001, 002, and 003, respectively, and when the radio frequency antenna in which the token is owned is the radio frequency antenna 23, the token is released, the token may be transferred to the radio frequency antenna 31 according to an ascending algorithm. However, the token may be transmitted to the rf antenna having a relatively large traffic volume in the corresponding lane in a priority manner. In a preferred embodiment, when the time that the token is occupied by a certain rf antenna exceeds a certain threshold or a certain preset special condition, the token may be forcibly released, for example, any one of the related rfid devices updates the rf antenna that holds the token in the token information and sends the updated rf antenna.
As shown in fig. 4, a flow chart of a multi-channel rfid device linkage method according to an embodiment of the present invention is shown. The operation of the rfid device may be designed such that two parallel processes or modules work together, one responsible for polling and identification operations of the connected rf antenna and the other responsible for processing token information. The processing of the token information is a cyclic process, and according to an actual application scenario, the local rfid device may continuously receive the token information of other rfid devices, and also continuously update the token information and send the updated token information to other rfid devices. In step S11, the local rfid device receives the token information, then in step S21, checks the token information to determine whether the token information is useful, determines whether there is any rf antenna in the token information connected to the local rfid device, if not, indicates that the token information is not useful, then returns to step S11, receives the next set of token information, if yes, proceeds to step S31, determines whether it is necessary to use the rf antenna having the token, because the working status of the local rfid device is different, the determination result changes accordingly, determines based on the above-mentioned related embodiment, if not, proceeds to step S34, passes the token to another rf antenna, updates the token owner and sends the token information to another rfid device, then returns to step S11, if yes, proceeds to step S32, using the rf antenna in possession of the token, after the identification operation of the rf antenna is completed, the process proceeds to step S33, the token owner is updated and token information is transmitted to other rf identification devices, and then the process returns to step S11.
FIG. 5 is a block diagram of a multi-channel RFID device linkage system according to an embodiment of the present invention. The multi-channel RFID device linkage system comprises a receiving unit 100, a viewing unit 200 and an executing unit 300. The receiving unit 100 is configured to receive token information sent by other rfid devices, where the token information at least includes a corresponding interference group and a corresponding rf antenna in the interference group that has a token, and the interference group is grouped in such a manner that the rf antennas that generate mutual interference are changed into one group, which is a specific embodiment that may refer to a multi-channel rfid device linkage method. The received token information is related information sent by other radio frequency identification devices after being updated according to respective working states, and the state information of the group of radio frequency antennas and the group of radio frequency antennas which have authority to identify at present are determined through an interference group in the token information. Preferably, the token information is transmitted to the rfid devices of the same subnet group in a multicast manner, the same subnet group is connected to the rfid devices on the same cross section through network devices such as routers, and the rfid devices on the same cross section are often installed on a portal frame and connected together through routing.
The checking unit 200 is configured to check whether the rf antenna connected to the local rfid device is the rf antenna having the token in the interference group, that is, determine whether the token information gives a certain rf antenna authority to the local rfid device for performing the identification operation. The viewing unit 200 further includes: and when the radio frequency antenna connected with the local radio frequency identification device surrounds the interference group or the radio frequency antenna with the token is connected with the local radio frequency identification device, directly finishing the checking of the token information.
The execution unit 300 is configured to determine whether to perform the identification operation of the first rf antenna according to the working state of the local rfid device when the first rf antenna connected to the local rfid device is the rf antenna having the token, that is, a certain rf antenna connected to the local rfid device has the authority to perform the identification operation. Preferably, the execution unit 300 further includes: and determining to perform a first radio frequency antenna identification operation or skip the first radio frequency antenna identification operation according to the working state of a radio frequency antenna connected with the local radio frequency identification device except the first radio frequency antenna and/or the traffic flow on a lane corresponding to the first radio frequency antenna. And when the first radio frequency antenna identification operation is completed or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices. The token is transmitted by updating specific token information, the next token is specifically transmitted to which radio frequency antenna, the priority between the radio frequency antennas in the interference group corresponding to the token is determined, and the setting of the priority can be directly determined by the ascending and descending order of the serial numbers of the radio frequency antennas in the interference group or the traffic flow on the lane corresponding to the radio frequency antennas. Other embodiments of the viewing unit 200 and the execution unit 300 may refer to embodiments of the multi-way rfid device linkage method.
In connection with the technical solutions of the methods disclosed in the present Application, the methods may be directly embodied as hardware, a software module executed by a control unit, or a combination of the two, that is, one or more steps and/or one or more steps combinations, and may correspond to each software module of a computer program flow, or may correspond to each hardware module, for example, an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or any suitable combination thereof. For convenience of description, the above-mentioned apparatuses are described as being divided into various modules by functions, and of course, the functions of the modules may be implemented in one or more software and/or hardware when implementing the present application.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on this understanding, the technical solutions of the present application may be embodied in the form of software products, which essentially or partially contribute to the prior art. The software is executed by a micro-control unit, which may include one or more micro-control units of any type, depending on the desired configuration, including but not limited to a micro-control unit, a microcontroller, a DSP (Digital Signal Processor), or any combination thereof. The software is stored in a memory, such as a volatile memory (e.g., random access memory, etc.), a non-volatile memory (e.g., read-only memory, flash memory, etc.), or any combination thereof.
In summary, the present invention arranges adjacent rf antennas that generate interference in an interference group, receives token information of a specific interference group sent by other rfid devices, and determines the transceiving authority of the rf antennas in the interference group according to the token information to implement reasonable allocation management of the connected rf antennas by the rfid devices. The invention can reduce the interference of other nearby radio frequency identification devices and improve the efficiency of radio frequency identification.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A multi-channel radio frequency identification device linkage method is characterized by comprising the following steps:
receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna with a token in the interference group; the interference group comprises designated radio frequency identification antennas, and the radio frequency identification antennas generate interference with each other; the radio frequency identification device comprises a local radio frequency identification device and other radio frequency identification devices, wherein the local radio frequency identification device is a radio frequency identification device for running a specific step, and the other radio frequency identification devices are radio frequency identification devices relative to the other radio frequency identification devices on the same section except the local radio frequency identification device;
checking whether a radio frequency antenna connected with a local radio frequency identification device is a radio frequency antenna with a token in the interference group;
when a first radio frequency antenna connected with the local radio frequency identification device is a radio frequency antenna with a token, determining whether to perform identification operation of the first radio frequency antenna according to the working state of the local radio frequency identification device;
and when the first radio frequency antenna identification operation is finished or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices.
2. The method for multi-channel rfid device association as claimed in claim 1, wherein the token information is transmitted to the rfid devices in the same subnet group by multicast.
3. The multi-channel rfid device linkage method according to claim 1, wherein the checking of the token information is directly ended when the rfid device is connected to a rf antenna that is not in the interference group or a token-owned rf antenna is not connected to a local rfid device.
4. The method for linking multiple radio frequency identification devices according to claim 1, wherein the first radio frequency antenna identification operation is performed or skipped according to the operating status of the radio frequency antenna connected to the local radio frequency identification device other than the first radio frequency antenna and/or the traffic flow rate of the lane corresponding to the first radio frequency antenna.
5. A multi-channel rfid device linkage system, comprising:
the receiving unit is used for receiving token information sent by other radio frequency identification devices, wherein the token information at least comprises a corresponding interference group and a radio frequency antenna with a token in the interference group; the interference group comprises designated radio frequency identification antennas, and the radio frequency identification antennas generate interference with each other; the radio frequency identification device comprises a local radio frequency identification device and other radio frequency identification devices, wherein the local radio frequency identification device is a radio frequency identification device for running a specific step, and the other radio frequency identification devices are radio frequency identification devices relative to the other radio frequency identification devices on the same section except the local radio frequency identification device;
the checking unit is used for checking whether the radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token in the interference group;
the execution unit is used for determining whether to carry out identification operation of the first radio frequency antenna according to the working state of the local radio frequency identification device when the first radio frequency antenna connected with the local radio frequency identification device is the radio frequency antenna with the token; and when the first radio frequency antenna identification operation is finished or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices.
6. The multiple rfid device linkage system according to claim 5, wherein the token information is transmitted to rfid devices in the same subnet group by multicast.
7. The multiple radio frequency identification device linkage system according to claim 5, wherein the viewing unit further comprises: and when the radio frequency antenna connected with the local radio frequency identification device is not in the interference group or the radio frequency antenna with the token is not connected with the local radio frequency identification device, directly finishing the checking of the token information.
8. The multi-channel rfid linkage system of claim 5, wherein the execution unit further comprises: determining to perform a first radio frequency antenna identification operation or skip the first radio frequency antenna identification operation according to the working state of a radio frequency antenna connected with the local radio frequency identification device except the first radio frequency antenna and/or the traffic flow on a lane corresponding to the first radio frequency antenna;
and when the first radio frequency antenna identification operation is finished or the first radio frequency antenna identification operation is skipped, updating the radio frequency antenna with the token in the token information into other radio frequency antennas in the interference group, and sending the updated token information to other radio frequency identification devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611199584.5A CN106778420B (en) | 2016-12-22 | 2016-12-22 | Multi-channel radio frequency identification device linkage method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611199584.5A CN106778420B (en) | 2016-12-22 | 2016-12-22 | Multi-channel radio frequency identification device linkage method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106778420A CN106778420A (en) | 2017-05-31 |
| CN106778420B true CN106778420B (en) | 2020-11-03 |
Family
ID=58897886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611199584.5A Active CN106778420B (en) | 2016-12-22 | 2016-12-22 | Multi-channel radio frequency identification device linkage method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106778420B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315659A (en) * | 2008-06-24 | 2008-12-03 | 杭州电子科技大学 | Reading device and label communication method for preventing reading device collision |
| CN101916354A (en) * | 2010-08-16 | 2010-12-15 | 中兴通讯股份有限公司 | Radio frequency identification method and reader |
| CN102479312A (en) * | 2010-11-23 | 2012-05-30 | 天津中兴软件有限责任公司 | Method for avoiding signal interference in radio frequency identification system |
| CN102479310A (en) * | 2010-11-23 | 2012-05-30 | 天津中兴软件有限责任公司 | Radio frequency identification method |
| CN102890763A (en) * | 2011-07-20 | 2013-01-23 | 中兴通讯股份有限公司 | Method for inhibiting inter-lane interference, coupler and reader |
| CN103123728A (en) * | 2011-11-21 | 2013-05-29 | 天津中兴软件有限责任公司 | Tag transaction method based on radio frequency identification |
| CN103177276A (en) * | 2013-04-07 | 2013-06-26 | 南京大学 | Cargo positioning method and system based on adaptive adjustment antenna power |
| CN103324969A (en) * | 2013-07-04 | 2013-09-25 | 厦门信达物联科技有限公司 | RFID (Radio Frequency Identification) reader with multiple antennae working simultaneously, and radio frequency data signal identification method of same |
| CN103577857A (en) * | 2013-11-29 | 2014-02-12 | 威海北洋电气集团股份有限公司 | RFID three-dimensional detecting device and use method thereof |
| CN103747521A (en) * | 2013-12-28 | 2014-04-23 | 范志广 | Real-time location method and system based on radio frequency identification of mobile communication terminal |
| CN106156682A (en) * | 2016-07-20 | 2016-11-23 | 江苏本能科技有限公司 | RF identification monkey chatter suppressing method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7898419B2 (en) * | 2007-07-27 | 2011-03-01 | Lucomm Technologies, Inc. | Systems and methods for object localization and path identification based on RFID sensing |
| US10086657B2 (en) * | 2014-05-19 | 2018-10-02 | Control Module, Inc. | System for automatically determining vehicle tire wear status |
-
2016
- 2016-12-22 CN CN201611199584.5A patent/CN106778420B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315659A (en) * | 2008-06-24 | 2008-12-03 | 杭州电子科技大学 | Reading device and label communication method for preventing reading device collision |
| CN101916354A (en) * | 2010-08-16 | 2010-12-15 | 中兴通讯股份有限公司 | Radio frequency identification method and reader |
| CN102479312A (en) * | 2010-11-23 | 2012-05-30 | 天津中兴软件有限责任公司 | Method for avoiding signal interference in radio frequency identification system |
| CN102479310A (en) * | 2010-11-23 | 2012-05-30 | 天津中兴软件有限责任公司 | Radio frequency identification method |
| CN102890763A (en) * | 2011-07-20 | 2013-01-23 | 中兴通讯股份有限公司 | Method for inhibiting inter-lane interference, coupler and reader |
| CN103123728A (en) * | 2011-11-21 | 2013-05-29 | 天津中兴软件有限责任公司 | Tag transaction method based on radio frequency identification |
| CN103177276A (en) * | 2013-04-07 | 2013-06-26 | 南京大学 | Cargo positioning method and system based on adaptive adjustment antenna power |
| CN103324969A (en) * | 2013-07-04 | 2013-09-25 | 厦门信达物联科技有限公司 | RFID (Radio Frequency Identification) reader with multiple antennae working simultaneously, and radio frequency data signal identification method of same |
| CN103577857A (en) * | 2013-11-29 | 2014-02-12 | 威海北洋电气集团股份有限公司 | RFID three-dimensional detecting device and use method thereof |
| CN103747521A (en) * | 2013-12-28 | 2014-04-23 | 范志广 | Real-time location method and system based on radio frequency identification of mobile communication terminal |
| CN106156682A (en) * | 2016-07-20 | 2016-11-23 | 江苏本能科技有限公司 | RF identification monkey chatter suppressing method and system |
Non-Patent Citations (1)
| Title |
|---|
| 多用户干扰信道分布式波束成形算法;包赢赢;《中国优秀硕士学位论文全文数据库 信息科技辑》;20131215;第2013年卷(第S2期);第I136-627页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106778420A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110582072B (en) | Fuzzy matching-based resource allocation method and device in cellular internet of vehicles | |
| CN112087712B (en) | Vehicle networking communication method and server, road side unit, communication device and system | |
| DE102015226150B4 (en) | Radio device for a vehicle locking system and method for calibrating such a radio device | |
| CN105814581A (en) | Mitigating adjacent RFID reader interference | |
| CN103780508A (en) | Software wave filtering method and system of CAN bus messages and electronic control unit | |
| US20180338000A1 (en) | Resource allocation for channel access in v2x communication systems | |
| US8736422B2 (en) | Method and reader to conduct a label query in a radio frequency identification system | |
| US9408020B2 (en) | Method and radio beacon for localising an on-board unit | |
| CN109474917A (en) | A kind of roadside device RSU and its ' In System Reconfiguration Method | |
| CN106778420B (en) | Multi-channel radio frequency identification device linkage method and system | |
| CN108924789A (en) | Car networking communication pattern selection method and device | |
| CN107579801A (en) | ETC system, memory, roadside unit and its transaction processing method | |
| CN104994582A (en) | Wireless network scheduling method based on serial interference cancellation and power control | |
| CN110162026B (en) | Object recognition system, method and device | |
| CN101916354A (en) | Radio frequency identification method and reader | |
| CN108834130A (en) | Mark distributing method, device, terminal and computer readable storage medium | |
| US10517118B2 (en) | Transmission resource determining method and related device | |
| CN109474918B (en) | Short-distance communication method, device and system | |
| CN106332274A (en) | Positioning method and equipment | |
| CN106778419B (en) | Multi-channel radio frequency identification device linkage method and system | |
| CN104735715A (en) | Wireless multi-channel communication device and multi-channel real-time communication method | |
| CN113641186B (en) | Unmanned aerial vehicle formation radio frequency compatibility design method | |
| WO2022179077A1 (en) | Communication and sensing integrated non-orthogonal multiple access random access communication method and apparatus | |
| CN105657831B (en) | Baseband resource management method and device | |
| CN102479310A (en) | Radio frequency identification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |