CN111243282A - Vehicle identification system - Google Patents
Vehicle identification system Download PDFInfo
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- CN111243282A CN111243282A CN201811443913.5A CN201811443913A CN111243282A CN 111243282 A CN111243282 A CN 111243282A CN 201811443913 A CN201811443913 A CN 201811443913A CN 111243282 A CN111243282 A CN 111243282A
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- vehicle identification
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
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- General Physics & Mathematics (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
A vehicle identification system comprises an RFID electronic beacon, a radiation antenna, a reader and a server; the RFID electronic beacon is arranged on a vehicle to be identified; the radiation antenna is located in a first preset range around a parking space, is connected with the reader, and is used for acquiring radiation signals of RFID electronic beacons of vehicles on the parking space and sending the radiation signals to the reader; the reader is located in a second preset range around the parking space and used for determining vehicle identification information of the vehicle according to the radiation signal and sending the vehicle identification information to the server; the server is coupled with the reader and used for receiving the vehicle identification information sent from the reader so as to determine parking information of vehicles parked on the parking spaces. The scheme of the invention can improve the accuracy of vehicle identification, provides the possibility of backtracking of the parking information and effectively improves the user experience.
Description
Technical Field
The invention relates to the technical field of parking, in particular to a vehicle identification system.
Background
With the development of economy in China, the problems of rapid increase of automobile holding capacity and shortage of parking spaces are increasingly highlighted, and in order to relieve parking pressure and smooth traffic, temporary parking is carried out by using lanes on two sides of a road in many provinces and cities in China, so that popularization of parking in the road is introduced.
Most of the current technologies for on-road parking in China adopt a geomagnetic technology, for example, E parking in Shenzhen is the on-road parking technology which is popularized earliest in China, namely a mode that the used geomagnetic technology is matched with a mobile phone APP. The popularization of the application is limited due to various defects of the geomagnetic technology.
Specifically, the geomagnetic technology is easily interfered by the environment, and is easily subjected to system fee deduction errors, so that effective vehicle information cannot be acquired because the geomagnetic technology can only determine whether a vehicle parks or leaves, and when a fault or a complaint occurs, the possibility of information backtracking to solve the complaint is low, and the user experience is poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vehicle identification system, which can improve the accuracy of vehicle identification, provide the possibility of backtracking of parking information and effectively improve the user experience.
In order to solve the above technical problem, an embodiment of the present invention provides a vehicle identification system, including an RFID electronic beacon, a radiation antenna, a reader, and a server; the RFID electronic beacon is arranged on a vehicle to be identified; the radiation antenna is located in a first preset range around a parking space, is connected with the reader, and is used for acquiring radiation signals of RFID electronic beacons of vehicles on the parking space and sending the radiation signals to the reader; the reader is located in a second preset range around the parking space and used for determining vehicle identification information of the vehicle according to the radiation signal and sending the vehicle identification information to the server; the server is coupled with the reader and used for receiving the vehicle identification information sent from the reader so as to determine parking information of vehicles parked on the parking spaces.
Optionally, the reader includes an RFID reader module, a processor module, and a communication module; the radiation antenna is coupled with the RFID reader module and used for sending the collected radiation signals of the RFID electronic beacon to the RFID reader module; the RFID reader-writer module is connected with the processor module and used for determining vehicle initial information of the vehicle according to the radiation signal and sending the vehicle initial information to the processor module; the processor module is connected with the communication module and used for determining the vehicle identification information according to the vehicle initial information and sending the vehicle identification information to the communication module; the communication module is used for sending the vehicle identification information to the server.
Optionally, the radiation antennas are multiple groups, different groups of radiation antennas are used for acquiring radiation signals of RFID electronic beacons of vehicles on different parking spaces, and the reader further includes a splitter switch module; the first ends of the shunt switch modules are respectively connected with the multiple groups of radiation antennas, and the second ends of the shunt switch modules are connected with the RFID reader-writer module so as to collect radiation signals of RFID electronic beacons of vehicles to be identified on different parking spaces in a time division mode.
Optionally, the radiation antenna is a low elevation antenna or a monopole antenna.
Optionally, the number of the radiation antennas corresponding to each RFID electronic beacon is multiple, and a preset distance is provided between the multiple radiation antennas.
Optionally, the radiation antenna is located in the box-shaped structure, and two opposite side walls and the rear wall of the box-shaped structure have electromagnetic wave reflecting surfaces.
Optionally, the material of the electromagnetic wave reflecting surface is selected from metal and stone.
Optionally, the number of the radiation antennas corresponding to each RFID electronic beacon is multiple, and at least a part of the multiple radiation antennas is located within a preset range of two opposite side walls of the box-shaped structure.
Optionally, the parking stall is side parking stall, the RFID electronic beacon set up in the automobile body surface within the preset range around the right front wheel of vehicle.
Optionally, the parking space is a side parking space, and the RFID electronic beacon at least includes a first beacon and a second beacon; the first beacon is arranged on the outer surface of the vehicle body in a preset range around the right front wheel of the vehicle, and the second beacon is arranged on the outer surface of the vehicle body in a preset range around the left rear wheel of the vehicle.
Optionally, the vehicle identification information of the vehicle is selected from one or more of the following: the license plate number of the vehicle, owner information of the vehicle, frame number of the vehicle, and engine number of the vehicle.
Optionally, the server includes a base station and a background server; the base station is coupled with the background server and used for receiving the vehicle identification information from the reader and sending the vehicle identification information to the background server so as to obtain parking information of the vehicles parked on the parking spaces through analysis of the background server.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the RFID electronic beacons are arranged on the vehicles to be identified, and the radiation antennas and the readers are arranged in the preset range around the parking spaces, so that the RFID electronic beacons of the vehicles on the parking spaces can be read to determine the vehicle identification information of the vehicles and further sent to the server, the parking information of the vehicles parked on the parking spaces can be determined, the accuracy of vehicle identification can be improved according to the parking information of the vehicles, the possibility of information backtracking to solve complaints is provided, and the user experience is effectively improved.
Further, the radiation antennas are in multiple groups, the radiation antennas in different groups are used for collecting radiation signals of the RFID electronic beacons of the vehicles on different parking spaces, and the reader further comprises a splitter switch module.
Further, the radiation antenna is a low elevation angle antenna or a monopole antenna, and compared with a conventional apple-shaped radiation area antenna or a sector radiation area antenna, the radiation intensity of the radiation antenna can be improved in an area with a large angle far away from the normal direction of the antenna, so that when a vehicle approaches the roadside, the radiation signal of the RFID electronic beacon can still be collected.
Further, the number of the radiation antennas corresponding to each RFID electronic beacon is multiple, and a preset distance is reserved between the multiple radiation antennas. By adopting the scheme of the embodiment of the invention, the repeated radiation areas of the plurality of radiation antennas are favorably realized, so that the total radiation areas of the plurality of radiation antennas are favorably enabled to be closer to a rectangle, the radiation intensity in the normal direction of the radiation antennas is favorably reduced, the misreading caused by the over-strong radiation intensity when a vehicle stays or passes out of a parking space far away from the radiation antennas is avoided, and the accuracy of vehicle identification is effectively improved.
Furthermore, the radiation antenna is located in the box-shaped structure, and two opposite side walls and the back wall of the box-shaped structure are provided with electromagnetic wave reflecting surfaces, so that the radiation antenna is influenced by the electromagnetic wave reflecting surfaces, the direction with the strongest radiation of the radiation antenna can deflect a certain angle from the normal direction, when a plurality of radiation antennas correspond to each RFID electronic beacon, the total radiation area of the plurality of radiation antennas is more close to a rectangle, the radiation intensity of the normal direction of the radiation antenna is favorably reduced, misreading caused by too strong radiation intensity when a vehicle stays or passes out of a parking space far away from the radiation antenna is avoided, and the accuracy of vehicle identification is effectively improved.
Further, the parking space is a side parking space, and the RFID electronic beacon at least comprises a first beacon and a second beacon; the first beacon is arranged on the outer surface of the vehicle body in a preset range around the right front wheel of the vehicle, and the second beacon is arranged on the outer surface of the vehicle body in a preset range around the left rear wheel of the vehicle. By adopting the scheme of the embodiment of the invention, whether the vehicle has the condition of retrograde parking can be determined, and the safety of road traffic is improved.
Drawings
FIG. 1 is a schematic diagram of a vehicle identification system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an operating scenario of a vehicle identification system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a radiation antenna and a reader in an embodiment of the present invention;
FIG. 4 is a schematic diagram of another embodiment of a radiation antenna and a reader according to the present invention;
fig. 5 is a schematic cross-sectional view of a radiation antenna according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a box-shaped structure of a radiation antenna according to an embodiment of the present invention;
fig. 7 is a schematic view of a radiation area of a radiation antenna according to an embodiment of the present invention;
fig. 8 is a diagram illustrating simulation results of a radiation antenna according to an embodiment of the present invention.
Detailed Description
In the existing in-road parking technology, a geomagnetic technology is usually adopted, so that system fee deduction errors are easily caused. Further, since the geomagnetic technology can only determine whether a vehicle parks or leaves, but cannot acquire effective vehicle information, when a fault or a complaint occurs, the possibility of backtracking information to solve the complaint is low, and the user experience is poor.
The inventor of the present invention finds, through research, that in the existing geomagnetic technology, the geomagnetic technology is easily interfered by the environment, and the phenomenon of geomagnetic signal jump often occurs, which easily causes a system fee deduction error, and also, for example, the reaction of the geomagnetic signal has a delay, which easily causes a car following phenomenon, which causes a fee deduction error. Wherein, with the car phenomenon for example can leave the parking stall for the present car, when the back car gets into the parking stall fast, because earth magnetism signal fails in time to change, the system probably thinks that the front truck has not left yet, leads to continuing to deduct the expense to the front truck.
Further, in the prior art, magnetic field data in the parking space is usually determined multiple times, and whether a vehicle is parked is determined according to the change condition of the multiple magnetic field data, but detailed information of the vehicle cannot be obtained, which causes the problems that errors are easy to occur and the possibility of complaint resolution by information backtracking is low.
In the embodiment of the invention, the RFID electronic beacons are arranged on the vehicles to be identified, and the radiation antennas and the readers are arranged in the preset range around the parking spaces, so that the RFID electronic beacons of the vehicles on the parking spaces can be read to determine the vehicle identification information of the vehicles and further sent to the server, the parking information of the vehicles parked on the parking spaces can be determined, the accuracy of vehicle identification can be improved according to the parking information of the vehicles, the possibility of information backtracking to solve complaints is provided, and the user experience is effectively improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle identification system according to an embodiment of the present invention.
The vehicle identification system may include an RFID electronic beacon 100, a radiating antenna 120, a reader 200, and a server 300.
The RFID electronic beacon 100 may be installed on a vehicle to be identified.
Specifically, the RFID (Radio Frequency Identification) is a non-contact automatic Identification technology, which automatically identifies a target object and obtains related data through a Radio Frequency signal, and the Identification can work in various severe environments without manual intervention. The RFID can identify high-speed moving objects and can simultaneously identify a plurality of electronic beacons, and the operation is quick and convenient.
More specifically, the RFID system may be a simple wireless system, e.g. comprising two basic devices, which is used to control, detect and track objects. An RFID system may consist of a single reader (also known as an interrogator) and a plurality of electronic beacons (also known as transponders or electronic tags).
Wherein, RFID can be divided into Low Frequency (LF), High Frequency (HF), Ultra High Frequency (UHF), Microwave (MW) according to the difference of applied frequency, and corresponding representative frequency can be respectively: low frequency below 135KHz, high frequency 13.56MHz, ultrahigh frequency 860M-960MHz, microwave 2.4GHz or 5.8 GHz.
The RFID electronic beacons 100 may be composed of coupling elements and chips, and each RFID electronic beacon 100 may have a unique electronic code attached to an object (e.g., a vehicle to be identified) to identify a target object.
In the embodiment of the present invention, the RFID electronic beacon 100 may be installed inside the vehicle, for example, inside a window glass or the like, at a position where electromagnetic waves are not shielded, so as to protect the RFID electronic beacon 100; the RFID electronic beacon 100 may be installed on an outer surface of a vehicle body to improve reading convenience and recognition of the RFID electronic beacon 100 by the reader 200.
The radiation antenna 120 may be located in a first preset range around a parking space, and is connected to the reader 200, and is configured to collect a radiation signal of the RFID electronic beacon 100 of a vehicle on the parking space, and send the radiation signal to the reader 200.
The radiation antenna 120 may radiate radio frequency signals to the outside and receive external radiation signals.
In a specific implementation, the radiation antenna 120 and the reader 200 may be connected in a wired or wireless manner, and preferably, the radiation antenna 120 and the reader 200 may also be located at the same position, for example, integrated in the same box structure, so that the radiation antenna 120 and the reader 200 are protected by using a single box structure, and the security of the system is improved.
The reader 200 may be located in a second preset range around the parking space, and configured to determine the vehicle identification information of the vehicle according to the radiation signal of the RFID electronic beacon 100 of the vehicle on the parking space, and send the vehicle identification information to the server 300.
Specifically, the Reader (Reader)200 may read information of the vehicle-mounted RFID electronic beacon 100 by means of radio frequency, and may be designed to be handheld or fixed.
Further, the vehicle identification information of the vehicle may be selected from one or more of: the license plate number of the vehicle, owner information of the vehicle, frame number of the vehicle, and engine number of the vehicle. The owner information of the vehicle may include the identity information (e.g., name, identification number) of the owner and the driving license number of the owner.
Wherein the vehicle identification information may be stored inside the RFID electronic beacon 100.
In the embodiment of the present invention, since the radiation antenna 120 and the reader 200 are installed in the preset range around the parking space, and each parking space has a fixed number, the vehicle identification system can determine whether a vehicle is parked in each parking space according to the reading result of the radiation antenna 120 and the reader 200, and can obtain the vehicle identification information of the vehicle in the parking space.
It should be noted that the radiation antenna 120 may be set to collect the radiation signal of the RFID electronic beacon of the vehicle on the parking space at regular time, and when the vehicle is not parked on the parking space, the vehicle identification information may be set to "no vehicle is parked", so that the server 300 can obtain the latest condition on the parking space in time.
The server 300 is coupled to the reader 200, and is configured to receive the vehicle identification information transmitted from the reader 200 to determine parking information of the vehicle parked in the parking space.
Specifically, the server 300 may include a base station and a background server, wherein the base station is coupled to the background server, and is configured to receive the vehicle identification information from the reader 200 and send the vehicle identification information to the background server, so as to obtain parking information of the vehicle parked on the parking space through analysis of the background server.
In a specific implementation manner of the embodiment of the present invention, when there are many parking spaces, a base station may be additionally disposed at a position close to the parking space, so that the vehicle identification information may be acquired from the radiation antenna 120 and the reader 200 at a short distance and sent to a background server at a far position, which is beneficial to improving the quality and effectiveness of information transmission. Specifically, if the vehicle identification system uses wired centralized power supply or local wireless communication or local limited communication, the base station may be connected to a plurality of local readers 200 and then communicate with the background server in a wireless or wired manner by using a scheme of a local base station.
Further, if the base station is connected to the reader 200 by wire, the base station may be used to supply power to the radiation antenna 120 and the reader 200.
In the embodiment of the invention, the RFID electronic beacons are arranged on the vehicles to be identified, and the radiation antennas and the readers are arranged in the preset range around the parking spaces, so that the RFID electronic beacons of the vehicles on the parking spaces can be read to determine the vehicle identification information of the vehicles and further sent to the server, the parking information of the vehicles parked on the parking spaces can be determined, the accuracy of vehicle identification can be improved according to the parking information of the vehicles, the possibility of information backtracking to solve complaints is provided, and the user experience is effectively improved.
Referring to fig. 2, fig. 2 is a schematic view of an operating scenario of a vehicle identification system according to an embodiment of the present invention.
In the working scenario, the RFID electronic beacon 100 may be mounted on the outer surface of the vehicle body on the front right side of the vehicle 500, and the radiation antenna 120 and the reader 200 may be mounted near the parking space 400 and on the side of the RFID electronic beacon 100.
The radiation antenna 120 and the reader 200 may have a wired or wireless connection relationship, so as to transmit the radiation signal of the RFID electronic beacon 100 of the vehicle on the parking space to the reader 200 after acquiring the radiation signal.
When the vehicle 500 mounted with the vehicle-mounted RFID electronic beacon 100 is normally parked in the parking space 400, the reader 200 may determine vehicle identification information according to the radiation signal and transmit the vehicle identification information to the server 300; when the vehicle 500 is not equipped with the RFID electronic beacon 100 or is not normally parked in the parking space 400 according to the specification, the reader 200 transmits information that the parking space is empty to the server 300. In specific implementation, according to the information, functions such as automatic payment can be realized, and traffic polices or management personnel can be reminded to perform manual intervention.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a specific implementation of a radiation antenna and a reader in an embodiment of the present invention.
The reader 200 may include an RFID reader module 220, a processor module 230, and a communication module 240.
The RFID reader module 220 is connected to the processor module 230, and is configured to determine vehicle initial information of the vehicle according to the radiation signal, and send the vehicle initial information to the processor module 230.
Specifically, the RFID reader module 220 has the main function of the reader 200, and can transmit a radio frequency signal to the radiation antenna 120, and then the radio frequency signal is transmitted to the RFID electronic beacon by the radiation antenna 120, and the radio frequency data returned by the RFID electronic beacon 100 is received by the radiation antenna 120, and then reaches the RFID reader module 220 for demodulation.
The processor module 230 is connected to the communication module 240, and configured to determine the vehicle identification information according to the vehicle initial information, and send the vehicle identification information to the communication module 240.
In particular, the processor module 230 may be used to execute computer instructions to control the various modules.
It should be noted that, in an implementation, a storage sub-module (not shown) may be additionally disposed in the processor module 230 for storing unsent data. Specifically, if the communication module 240 has a short loss of connection or a channel blockage problem, the storage sub-module may be used to store data, and the retransmission may be performed after the communication link is recovered.
The communication module 240 may be configured to send the vehicle identification information to the server.
Specifically, the communication module 240 may be configured to perform communication between the reader 200 and a server, and the communication method may include the following three methods: wired local base station communication, wireless local base station communication and wireless background communication.
More specifically, the wired local base station communication can be performed in a network cable or 485 serial bus mode, and the base station is connected with a plurality of integrated readers and then is connected to a public network of an operator; the communication mode of the wireless local base station can be LoRa or Bluetooth, zigbee or common wireless communication technology and the like, and the base station is connected with a plurality of integrated readers and then connected with a public network of an operator; the wireless background communication can adopt a wireless network directly connected with an operator, such as NBiot or a 2G, 3G, 4G network.
In the embodiment of the present invention, by using the reader 200 having the radiation antenna 120, the RFID reader module 220, the processor module 230, and the communication module 240, the functions of reading the RFID electronic beacon of the vehicle on the parking space to determine the vehicle identification information of the vehicle, and sending the vehicle identification information to the server can be realized.
Referring to fig. 4, fig. 4 is a schematic structural diagram of another specific implementation of the radiation antenna and the reader in the embodiment of the present invention.
In the another radiation antenna 120 and the reader 200, the radiation antennas 120 are multiple groups, and may include, for example, the first radiation antenna 120, the second radiation antenna 120 to the nth radiation antenna 120, where different groups of radiation antennas are used to collect radiation signals of RFID electronic beacons of vehicles in different parking spaces, and the reader 200 may include an RFID reader module 220, a processor module 230, and a communication module 240, and may further include a splitter switch module 210.
The first end of the splitter switch module 210 may be connected to the multiple groups of radiation antennas 120, respectively, and the second end of the splitter switch module 210 may be connected to the RFID reader module 220, so as to collect the radiation signals of the RFID electronic beacons of the vehicles to be identified on different parking spaces in a time division manner.
In the embodiment of the present invention, the plurality of groups of radiation antennas 120 are provided, different groups of radiation antennas 120 are used for acquiring radiation signals of RFID electronic beacons of vehicles on different parking spaces, and the reader 200 further includes a splitter switch module 210, and by adopting the scheme of the embodiment of the present invention, the splitter switch module 210 can be used for acquiring radiation signals of RFID electronic beacons of vehicles on different parking spaces in a time division manner, so that data of radiation antennas around a plurality of parking spaces can be acquired by using a single reader 200, which is beneficial to saving the number of readers 200 and reducing cost.
Referring to fig. 5, fig. 5 is a schematic cross-sectional structure diagram of a radiation antenna according to an embodiment of the present invention.
The radiation antenna 120 may be a low elevation antenna or a monopole antenna.
In the embodiment of the present invention, by setting the radiation antenna 120 as a low elevation angle antenna or a monopole antenna, compared with a conventional apple-shaped radiation area antenna or a sector radiation area antenna, the radiation intensity of the radiation antenna 120 can be increased in an area (for example, a direction offset by 80 ° from the normal of the radiation antenna 120) that is greatly away from the normal direction of the antenna, so that when a vehicle approaches a roadside, the radiation signal of an RFID electronic beacon can still be acquired.
Specifically, the radiation of each monopole antenna in the direction of 80 degrees from the normal is not weakened, and the problem that the electronic tag cannot be identified by a front wheel pressing line or a rear wheel pressing line when a traditional antenna vehicle stops close to a curb is solved.
In a specific implementation, the number of the radiation antennas 120 corresponding to each RFID electronic beacon may be multiple, and the multiple radiation antennas 120 have a preset distance L therebetween.
In the embodiment of the present invention, by setting the number of the radiation antennas 120 to be plural, and setting the preset distance between the plurality of radiation antennas 120, the total radiation area of the plurality of radiation antennas 120 can be widened, so as to cover more areas, and increase the probability of identifying the RFID electronic beacon.
It should be noted that, in another specific implementation manner of the embodiment of the present invention, the reader may be an integrated type, and the radiation antenna 120 and other modules are integrated in the reader.
Referring to fig. 6, fig. 6 is a schematic diagram of a box-shaped structure of a radiation antenna according to an embodiment of the present invention.
Specifically, the radiation antenna may be located in the box-shaped structure 130, and the box-shaped structure 130 may include two opposite side walls 132, a front wall 131, a rear wall, a top wall, and a bottom wall, where the two side walls 132, the front wall 131, the rear wall, the top wall, and the bottom wall enclose a cavity for accommodating the radiation antenna 120.
The electromagnetic wave signal emitted by the radiation antenna needs to be able to penetrate through the front wall 131, so as to read the RFID electronic beacon.
Further, the two opposite side walls 132 and the back wall of the box-shaped structure may have electromagnetic wave reflecting surfaces.
In the embodiment of the present invention, by arranging the two opposite side walls 132 and the rear wall of the box-shaped structure 130 to have the electromagnetic wave reflecting surfaces, the radiation antenna is affected by the electromagnetic wave reflecting surfaces, so that the direction in which the radiation antenna radiates most intensely is deflected by a certain angle from the normal direction, and when a plurality of radiation antennas correspond to each RFID electronic beacon, the total radiation area of the plurality of radiation antennas is more approximate to a rectangle, which is beneficial to reducing the radiation intensity in the normal direction of the radiation antenna, and avoiding misreading caused by too strong radiation intensity when a vehicle stays or passes through a parking space far away from the radiation antenna, thereby effectively improving the accuracy of vehicle identification.
Further, the material of the electromagnetic wave reflecting surface may be selected from metal and stone.
In the embodiment of the present invention, the electromagnetic wave reflecting surface is made of metal or stone, so that the electromagnetic wave can be reflected by the two opposite side walls 132 and the back wall of the box-shaped structure 130, and the radiation antenna can be protected because the metal and the stone are hard.
With reference to fig. 7 and 8, fig. 7 is a schematic diagram of a radiation area of a radiation antenna in an embodiment of the present invention, and fig. 8 is a schematic diagram of a simulation result of the radiation antenna in the embodiment of the present invention.
As shown in fig. 7, the number of the radiation antennas corresponding to each RFID electronic beacon is multiple, and at least a portion of the multiple radiation antennas 120 is located within a preset range of two opposite sidewalls of the box-shaped structure 130.
As can be seen from the simulation result diagram shown in fig. 8, the radiation intensity of a single radiation antenna is distributed in a sector, and the radiation intensities can be complemented by arranging a plurality of radiation antennas, so that the radiation intensity curve is close to a rectangle, that is, close to the shape of a parking space.
Specifically, the radiation area of the plurality of radiation antennas 120 is approximately rectangular, the first side a1 of the rectangle should be within the range of the parking space 400, the second side a2 of the rectangle should be adjacent to the side of the parking space near the radiation antennas 120, the third side a3 of the rectangle should be set so that the RFID beacon can be recognized when the vehicle is closest to the front of the parking space 400, and the fourth side a4 of the rectangle should be set so that the RFID beacon can be recognized when the vehicle is closest to the rear of the parking space 400.
In the embodiment of the present invention, by setting a plurality of the radiation antennas 120 corresponding to each RFID electronic beacon, and at least a part of the radiation antennas 120 are located in the preset range of two opposite sidewalls of the box-shaped structure 130, it is helpful to make the radiation antennas 120 have repeated radiation areas, so as to make the total radiation area of the radiation antennas 120 closer to a rectangle, thereby helping to reduce the radiation intensity in the normal direction of the radiation antennas 120, and avoiding misreading caused by too strong radiation intensity when a vehicle stops or passes through a parking space 400 far away from the radiation antennas 120, thereby effectively improving the accuracy of vehicle identification.
It should be noted that by setting the radiation antenna 120 to be a low elevation angle antenna or a monopole antenna, it is also helpful to make the total radiation area of the plurality of radiation antennas 120 closer to a rectangle than a conventional apple-shaped radiation area antenna or a sector radiation area antenna, thereby helping to reduce the radiation intensity in the normal direction of the radiation antenna 120.
It should be noted that, by providing the two opposite side walls 132 and the back wall of the box-shaped structure 130 with electromagnetic wave reflecting surfaces, the total radiation area of the plurality of radiation antennas 120 is also facilitated to be closer to a rectangle, thereby facilitating to reduce the radiation intensity in the normal direction of the radiation antennas 120. It is understood that the rectangles of the total radiation area of the plurality of radiation antennas 120 may exhibit different sizes by adopting different sizes of the box-type structures 130 and reflecting the radiation angle of the radiation antenna 120 by the side walls 132 and the rear wall of the box-type structures 130.
It should be noted that by setting different radiation angles for each radiation antenna 120, adjusting the distances between the plurality of radiation antennas 120, and setting different sizes of the box-shaped structures 130, the specific size of the rectangle of the total radiation area of the plurality of radiation antennas 120 can be adjusted to meet the specific length and width requirements of different parking spaces 400.
Further, the parking space may be a lateral parking space, and the RFID electronic beacon may be disposed on an outer surface of the vehicle body within a preset range around a front right wheel of the vehicle.
In the embodiment of the invention, the RFID electronic beacon is arranged on the outer surface of the vehicle body within the preset range around the right front wheel of the vehicle, so that the position, the distance and the height are all proper, and the radiation signal of the RFID electronic beacon can be collected more accurately.
The parking space can be a side parking space, and the RFID electronic beacon at least comprises a first beacon and a second beacon; the first beacon may be disposed on an outer surface of a vehicle body within a preset range around a front right wheel of the vehicle, and the second beacon may be disposed on an outer surface of a vehicle body within a preset range around a rear left wheel of the vehicle.
In the embodiment of the invention, the RFID electronic beacons are arranged on the outer surface of the vehicle body in the preset range around the right front wheel and the outer surface of the vehicle body in the preset range around the left rear wheel of the vehicle, so that the situation that whether the vehicle is parked in a retrograde direction or not is favorably determined, and the safety of road traffic is favorably improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A vehicle identification system is characterized by comprising an RFID electronic beacon, a radiation antenna, a reader and a server;
the RFID electronic beacon is arranged on a vehicle to be identified;
the radiation antenna is located in a first preset range around a parking space, is connected with the reader, and is used for acquiring radiation signals of RFID electronic beacons of vehicles on the parking space and sending the radiation signals to the reader;
the reader is located in a second preset range around the parking space and used for determining vehicle identification information of the vehicle according to the radiation signal and sending the vehicle identification information to the server;
the server is coupled with the reader and used for receiving the vehicle identification information sent from the reader so as to determine parking information of vehicles parked on the parking spaces.
2. The vehicle identification system of claim 1, wherein the reader comprises an RFID reader module, a processor module, and a communication module;
the radiation antenna is coupled with the RFID reader module and used for sending the collected radiation signals of the RFID electronic beacon to the RFID reader module;
the RFID reader-writer module is connected with the processor module and used for determining vehicle initial information of the vehicle according to the radiation signal and sending the vehicle initial information to the processor module;
the processor module is connected with the communication module and used for determining the vehicle identification information according to the vehicle initial information and sending the vehicle identification information to the communication module;
the communication module is used for sending the vehicle identification information to the server.
3. The vehicle identification system according to claim 2,
the reader comprises a reader body, a plurality of groups of radiation antennas, a plurality of branching unit switch modules and a plurality of antenna control modules, wherein the radiation antennas are in a plurality of groups, different groups of radiation antennas are used for collecting radiation signals of RFID electronic beacons of vehicles on different parking spaces, and the reader body further comprises a branching unit switch module;
the first ends of the shunt switch modules are respectively connected with the multiple groups of radiation antennas, and the second ends of the shunt switch modules are connected with the RFID reader-writer module so as to collect radiation signals of RFID electronic beacons of vehicles to be identified on different parking spaces in a time division mode.
4. The vehicle identification system of claim 1, wherein the radiating antenna is a low elevation antenna or a monopole antenna.
5. The vehicle identification system according to claim 1, wherein the plurality of radiating antennas are provided for each RFID electronic beacon, and a preset distance is provided between the plurality of radiating antennas.
6. The vehicle identification system of claim 1, wherein the radiating antenna is located within a box-shaped structure, and two opposing side walls and a rear wall of the box-shaped structure have electromagnetic wave reflecting surfaces.
7. The vehicle identification system of claim 6, wherein the material of the electromagnetic wave reflecting surface is selected from the group consisting of metal and stone.
8. The vehicle identification system of claim 6, wherein the plurality of radiating antennas is associated with each RFID electronic beacon, and at least a portion of the plurality of radiating antennas is located within a predetermined range of two opposing sidewalls of the box-shaped structure.
9. The vehicle identification system according to claim 1, wherein the parking space is a side parking space, and the RFID electronic beacon is provided on an outer surface of a vehicle body within a preset range around a front right wheel of the vehicle.
10. The vehicle identification system according to claim 1,
the parking space is a side parking space, and the RFID electronic beacon at least comprises a first beacon and a second beacon;
the first beacon is arranged on the outer surface of the vehicle body in a preset range around the right front wheel of the vehicle, and the second beacon is arranged on the outer surface of the vehicle body in a preset range around the left rear wheel of the vehicle.
11. The vehicle identification system of claim 1, wherein the vehicle identification information of the vehicle is selected from one or more of:
the license plate number of the vehicle, owner information of the vehicle, frame number of the vehicle, and engine number of the vehicle.
12. The vehicle identification system of claim 1, wherein the server comprises a base station and a backend server;
the base station is coupled with the background server and used for receiving the vehicle identification information from the reader and sending the vehicle identification information to the background server so as to obtain parking information of the vehicles parked on the parking spaces through analysis of the background server.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443913.5A CN111243282A (en) | 2018-11-29 | 2018-11-29 | Vehicle identification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811443913.5A CN111243282A (en) | 2018-11-29 | 2018-11-29 | Vehicle identification system |
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| CN111243282A true CN111243282A (en) | 2020-06-05 |
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| CN201811443913.5A Pending CN111243282A (en) | 2018-11-29 | 2018-11-29 | Vehicle identification system |
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