CN112735149B - Interval speed measurement method and device based on double-base identification and storage medium - Google Patents
Interval speed measurement method and device based on double-base identification and storage medium Download PDFInfo
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- CN112735149B CN112735149B CN202011563663.6A CN202011563663A CN112735149B CN 112735149 B CN112735149 B CN 112735149B CN 202011563663 A CN202011563663 A CN 202011563663A CN 112735149 B CN112735149 B CN 112735149B
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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
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding 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
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to the technical field of vehicle interval speed measurement, and discloses an interval speed measurement method, device and storage medium based on double-base identification, wherein the method comprises the following steps: collecting radio frequency identification information and image identification information of a vehicle at a starting point and an ending point of an interval; determining radio frequency position information of the vehicle according to the radio frequency identification information; determining image position information of the vehicle according to the image identification information; comparing the radio frequency position information with the image position information to determine radio frequency identification information and image identification information of the same vehicle; determining the actual speed according to the radio frequency identification information or the image identification information of the vehicle at the starting point and the end point of the interval; the method, the device and the storage medium accurately position the vehicles in the radio frequency identification information and the image identification information, can accurately obtain the accurate speed measurement result of the passing vehicles, realize more accurate determination of the overspeed condition and the license plate number of the vehicles, and are favorable for traffic law enforcement personnel to search and fix evidences on the overspeed vehicles.
Description
Technical Field
The invention relates to the technical field of vehicle interval speed measurement, in particular to an interval speed measurement method and device based on double-base identification and a storage medium.
Background
At present, the speed measurement of the vehicle in the interval is mainly completed by shooting images through a camera device, and the method has the advantage that the shot images can be directly used in traffic law enforcement as the evidence of vehicle overspeed. The main problems of this method are that the accuracy of the image recognition result is not high enough in general, and the recognition result is greatly affected by abnormal weather such as rain, fog, haze, and the like. The license plate number of the vehicle can be accurately obtained by adopting a radio frequency identification mode, and is not influenced by factors such as weather, but the identification result cannot be directly used as evidence. Therefore, the image identification and the radio frequency identification can be combined to be applied to speed measurement, so that the accurate identification of the license plate of the vehicle and the overspeed evidence can be realized, the two identification modes are used simultaneously, when more vehicles pass through, the vehicles in the image cannot be accurately corresponding to the license plate of the radio frequency identification one by one, and the overspeed vehicle is difficult to punish by taking out the accurate and powerful evidence.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method, a device and a storage medium for interval speed measurement based on double-base identification, wherein the method, the device and the storage medium can accurately correspond a vehicle in an image in interval speed measurement and a license plate of radio frequency identification, so that the overspeed condition and the license plate of the vehicle can be more accurately determined, evidence is fixed, and law enforcement is facilitated.
In order to achieve the above purpose, the invention provides the following technical scheme:
the interval speed measurement method based on the double-base identification comprises the following steps:
s1: collecting radio frequency identification information and image identification information of a vehicle at a starting point and an end point of an interval;
s2: determining radio frequency position information of the vehicle according to the radio frequency identification information;
s3: determining image position information of the vehicle according to the image identification information;
s4: comparing the radio frequency position information with the image position information to determine radio frequency identification information and image identification information of the same vehicle;
s5: and determining the actual speed according to the radio frequency identification information or the image identification information of the vehicle at the starting point and the ending point of the interval.
In the present invention, preferably, the S2 includes:
s201: determining the incident angle of a signal returned by an electronic identifier of the vehicle;
s202: and determining the radio frequency position information of the vehicle according to the incident angle and the antenna element distance.
In the present invention, it is preferable to further include
S6: and determining the speed measurement result of the interval according to the actual speed.
In the present invention, preferably, the S6 includes:
s601: judging whether the actual vehicle speed is greater than a preset vehicle speed, if so, executing S602, and if not, executing S603;
s602: determining one of the interval speed measurement results of 10% over speed, 10% to 30% over speed, 30% to 50% over speed and 50% over speed according to the percentage that the actual vehicle speed is greater than the preset vehicle speed;
s603: and determining that the interval speed measurement result is not overspeed.
In the present invention, preferably, the S4 includes:
s401: judging whether the radio frequency identification information of the same vehicle at the starting point and the end point is complete, if so, executing S402, otherwise, executing S403;
s402: calculating the average speed of the vehicle as the actual speed according to the distance between the starting point and the end point of the interval and the acquisition time of the radio frequency identification information of the starting point and the end point;
s403: deleting the stored radio frequency identification information of the starting point or the end point.
In the present invention, it is preferable that the method further comprises:
s7: collecting structured information of the vehicle; the structured information comprises a brand, a model and a color;
s8: judging whether the radio frequency identification information and the image identification information of the same vehicle are matched, if so, executing S13, otherwise, executing S9;
s9: comparing the image identification information with the structural information, and finding out a plurality of target vehicles to which the structural information matched with the image identification information belongs;
s10: comparing the structural information of the target vehicle with the radio frequency identification information, judging whether a vehicle matched with the radio frequency identification information exists in the target vehicle, if so, executing S11, otherwise, executing S12;
s11: storing the matched interval speed measurement result, image identification information and structural information in an associated manner;
s12: storing the interval speed measurement result;
s13: and the matched interval speed measurement result and the image identification information are stored in an associated manner.
In the present invention, preferably, in S1, the completion of the rfid information acquisition process triggers the start of the image identification information acquisition process.
Interval speed sensor based on two basic discernments includes: the acquisition unit is used for acquiring the radio frequency identification information and the image identification information of the vehicle at the starting point and the ending point of the interval; the radio frequency position determining unit is used for determining the radio frequency position information of the vehicle according to the radio frequency identification information; an image position determining unit for determining image position information of the vehicle based on the image recognition information; the position matching unit is used for comparing the radio frequency position information with the image position information and determining the radio frequency identification information and the image identification information of the same vehicle; and the vehicle speed judging unit is used for determining the actual vehicle speed according to the radio frequency identification information of the vehicle at the starting point and the end point of the interval and determining the interval speed measurement result according to the actual vehicle speed.
In the present invention, preferably, the interval speed measuring device based on bistatic identification further includes: the structured information unit is used for collecting and storing the structured information of the vehicle; the comprehensive analysis unit is used for judging whether the radio frequency identification information and the image identification information of the same vehicle are matched, comparing the image identification information with the structural information, finding out a plurality of target vehicles to which the structural information matched with the image identification information belongs, comparing the structural information of the target vehicles with the radio frequency identification information, and judging whether vehicles matched with the radio frequency identification information exist in the target vehicles; and the storage unit is used for storing the matched interval speed measurement result and the structural information in an associated manner, storing the interval speed measurement result, and storing the matched interval speed measurement result and the image identification information in an associated manner.
A computer readable storage medium having stored thereon instructions which, when executed by a processor, carry out the steps of the method of any preceding claim.
Compared with the prior art, the invention has the beneficial effects that:
the interval speed measuring method, the interval speed measuring device and the storage medium based on the double-base identification accurately position the vehicles in the radio frequency identification information and the vehicles in the image identification information, and then match the vehicles in the two identification information, so that the accurate speed measuring result of each passing vehicle can be accurately obtained, the overspeed condition and the license plate number of the vehicle can be more accurately determined, and traffic law enforcement personnel can search and fix evidences on overspeed vehicles; the method has the advantages that the structured information of the vehicle is collected, the vehicle which cannot acquire the license plate number by adopting the image identification information is identified by utilizing the structured information, the license plate number acquired by an image identification mode is supplemented, the verification effect on the radio frequency identification information of the vehicle can be realized, the accuracy of vehicle identification is further improved, and convenience is brought to overspeed judgment of the vehicle and law enforcement of overspeed vehicles.
Drawings
Fig. 1 is a flowchart of an embodiment of a method for measuring speed between intervals based on dual-base identification.
Fig. 2 is a flowchart of S2 in an embodiment of a method for measuring speed between intervals based on dual-basis identification.
Fig. 3 is a flowchart of another embodiment of a method for measuring speed between intervals based on dual-base identification.
Fig. 4 is a flowchart of S6 in another embodiment of a method for measuring speed between intervals based on dual-base identification.
Fig. 5 is a flowchart of an interval velocity measurement method based on dual basis identification in another embodiment S4.
Fig. 6 is a flowchart of another embodiment of a method for measuring speed between zones based on dual-base identification.
Fig. 7 is a schematic structural diagram of an embodiment of an interval speed measuring device based on bistatic identification.
Fig. 8 is a schematic structural diagram of another embodiment of the interval speed measuring device based on the bistatic identification.
In the drawings: the system comprises a 1-acquisition unit, a 2-radio frequency position determination unit, a 3-image position determination unit, a 4-position matching unit, a 5-vehicle speed judgment unit, a 6-structured information unit, a 7-comprehensive analysis unit and an 8-storage unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to fig. 6, a preferred embodiment of the present invention provides a method for measuring velocity between zones based on dual-base identification, including:
s1: and acquiring radio frequency identification information and image identification information of the vehicle at the starting point and the ending point of the interval.
The electronic identification reading device can acquire the radio frequency identification information by sending a radio frequency signal to the electronic identification and receiving a signal returned by the electronic identification, and the contents such as signal receiving time and signal receiving phase are added to form the radio frequency identification information together. The image recognition information can be collected by using a camera device to monitor the road, when the vehicle passes by, the camera device can sense the vehicle, the sensing method can be that the image recognition technology recognizes the passing vehicle in the monitored image, the camera device can record the video or shoot the picture when sensing the vehicle, and the shooting picture can meet the requirement of law enforcement evidence for speed measurement. The shot picture of the vehicle is the image identification information. The electronic identification reading device and the camera device can also be integrated devices which are respectively arranged at the starting point and the end point of the speed measuring interval and used for shooting passing vehicles.
S2: and determining the radio frequency position information of the vehicle according to the radio frequency identification information.
The radio frequency read-write device is provided with an antenna oscillator for receiving radio frequency signals. The included angle between the signal and the antenna element, namely the incident angle of the signal, can be calculated through the phase of the received signal (namely the signal returned by the electronic identifier). The two antenna oscillators are adopted to receive signals to obtain different incidence angles, and the distance and the direction of the electronic identifier relative to a certain antenna oscillator can be calculated by using the known distance between the antenna oscillators, namely the distance between the electronic identifier and the certain antenna oscillator, namely the radio frequency position information of the vehicle.
The above process can be summarized as follows:
s201: the angle of incidence of the signal returned by the electronic identification of the vehicle is determined.
S202: and determining the radio frequency position information of the vehicle according to the incident angle and the antenna element distance.
When more antenna elements are arranged, the process and the principle of determining the position are basically the same as those of the above process and principle, the calculated amount is larger due to the increase of the antenna elements, and meanwhile, the accuracy of determining the position is higher. Therefore, the radio frequency identification information of each vehicle can be used for calculating the radio frequency position information of each vehicle (the radio frequency position information can be simplified into which lane each vehicle is located and the position of the vehicle arranged in the lane).
S3: image location information of the vehicle is determined based on the image identification information.
The image identification information is processed to identify each vehicle, so that the position of each vehicle in the picture can be obtained, namely the image position information (the image position information can be simplified into which lane each vehicle is located and the place where each vehicle is arranged in the lane)
S4: and comparing the radio frequency position information with the image position information to determine the radio frequency identification information and the image identification information of the same vehicle.
The radio frequency position information and the image position information both comprise the position of each vehicle, and the radio frequency identification information and the image identification information are acquired when the vehicles are identified at the same place, the time interval is extremely short (generally at millisecond level), and the vehicles cannot have obvious position change within the extremely short time, so that the vehicles in the radio frequency position information and the image position information can be considered to be completely corresponding, the radio frequency position information and the image position information are compared, that is, the radio frequency identification information and the image identification information of each vehicle can be unified together, and the radio frequency identification information and the image identification information of the same vehicle can be determined.
Preferably, the acquisition process of the radio frequency identification information and the acquisition process of the image identification information have a conditional relationship, and the former process can be started. The electronic identification reading device has a longer recognition distance and can change the recognition distance by setting the strength of the emitted signal, while the shooting device has a shorter monitoring distance, and the recognition distance and the monitoring distance of the shooting device can be limited to a closer range by setting. In a monitoring system, a certain area (which may be a frame) is usually required to be set for identifying a vehicle, and when the vehicle enters the area, a shooting device is triggered to shoot a picture of the vehicle, so that a certain reaction time is required, the vehicle is missed in some cases, and a clear and complete picture of the vehicle cannot be shot. If the process of image identification is triggered by the process of radio frequency identification, the time interval of the two processes can be adjusted by adjusting the identification distance, so that the shooting device can shoot a clear and complete picture of the vehicle in the optimal time, the possibility of acquiring accurate license plate information from the image identification information of the vehicle can be improved, the time interval can also reach the millisecond level, the time is short, the position of the vehicle (or the relative position between the vehicles) can be considered to be unchanged, and the comparison between the radio frequency position information and the image position information is not influenced.
S5: and determining the actual speed according to the radio frequency identification information or the image identification information of the vehicle at the starting point and the ending point of the interval.
Through the process, the radio frequency identification information and the image identification information of the same vehicle at the starting point and the ending point are found, and the average speed of the vehicle in the interval can be calculated according to the acquisition time of the radio frequency identification information or the image identification information of the starting point and the ending point and the known distance between the starting point and the ending point, namely the actual speed of the vehicle to be acquired. The radio frequency identification information is more reliable to acquire, and errors may occur in the acquisition of the image identification information, so that the radio frequency identification information is preferably adopted to determine the actual vehicle speed.
The method of the embodiment accurately positions the vehicles in the radio frequency identification information and the vehicles in the image identification information, and then matches the vehicles in the two identification information, so that the accurate speed measurement result of each passing vehicle can be accurately obtained, the overspeed condition and the license plate number of the vehicle can be more accurately determined, and the method is favorable for traffic law enforcement personnel to search and fix evidences on overspeed vehicles.
In an embodiment of the present invention, the interval velocity measurement method based on bistatic identification further includes:
s6: and determining the speed measurement result of the interval according to the actual speed.
The method mainly comprises the steps of evaluating whether the measured actual vehicle speed exceeds the speed limit in the interval, wherein the simplest mode is divided into two evaluations, the actual vehicle speed is within a preset vehicle speed (less than or equal to the preset vehicle speed) and is determined not to be overspeed, and the actual vehicle speed exceeds the preset vehicle speed (more than the preset vehicle speed) and is determined to be overspeed.
Further, it is also possible to subdivide the case where the vehicle is speeding, i.e. S6 includes:
s601: and judging whether the actual vehicle speed is greater than the preset vehicle speed, if so, executing S602, and if not, executing S603.
S602: and determining the interval speed measurement result as one of 10% over speed, 10% to 30% over speed, 30% to 50% over speed and 50% over speed according to the percentage that the actual vehicle speed is greater than the preset vehicle speed.
S603: and determining that the interval speed measurement result is not overspeed.
The overspeed condition is subdivided according to the degree exceeding the preset vehicle speed, so that law enforcement personnel can more carefully and accurately know the overspeed condition of the vehicle, certain differentiated processing strategies are adopted for overspeed behaviors with different degrees, the fairness and the efficiency of law enforcement are promoted to be considered, and a basis is provided for further data analysis of upper-layer application.
In one embodiment of the present invention, S4 includes:
s401: and judging whether the radio frequency identification information of the same vehicle at the starting point and the ending point is complete, if so, executing S402, and otherwise, executing S403.
In actual speed measurement, if the speed measurement interval is a closed road section, radio frequency identification information and image identification information can be collected at a starting point and an end point generally; if the speed measuring interval has a branch, the condition that the vehicle only passes the starting point or the end point of the interval can occur, and only the data of the vehicle at the starting point or the end point can be collected, and the condition that only single-point data exists can not calculate the speed of the vehicle, so that the data has no significance for measuring the speed. Therefore, it is necessary to determine whether or not the data of the start point and the end point are complete, and to process them separately. The accuracy of the image identification information is lower than that of the radio frequency identification information, so that when the data of the starting point and the end point are judged to be full, the radio frequency identification information is directly adopted for judgment, and the effects of conciseness and accuracy can be achieved.
S402: and calculating the average speed of the vehicle as the actual speed according to the distance between the starting point and the end point of the interval and the acquisition time of the radio frequency identification information of the starting point and the end point.
The method for calculating the actual vehicle speed is described in detail and will not be described herein.
S403: deleting the stored radio frequency identification information of the starting point or the ending point.
For the condition that only the radio frequency identification information of the starting point or the end point exists, the actual vehicle speed cannot be calculated, the data are meaningless, the data are deleted, the storage space can be saved, and the redundancy is reduced.
In an embodiment of the present invention, the interval velocity measurement method based on bistatic identification further includes:
s7: structured information of the vehicle is collected.
The process can be shooting and collecting the vehicles when the administrative traffic management departments such as public security and the like issue the vehicle numbers, or shooting and collecting the vehicles under a better shooting condition in the working process of a camera device in a speed measuring area, or combining the two collecting methods, so that the structured information of the vehicles can be collected as much as possible. The structured information at least comprises a brand, a model and a color, and can further comprise relatively minor characteristics such as annual inspection marks, sun visors, hanging decorations and ornaments under the condition of more complete identification functions, so that the vehicle can be identified more finely.
S8: and judging whether the radio frequency identification information and the image identification information of the same vehicle are matched, if so, executing S13, and otherwise, executing S9.
S9: and comparing the image identification information with the structural information, and finding out a plurality of target vehicles to which the structural information matched with the image identification information belongs.
S10: and comparing the structural information of the target vehicle with the radio frequency identification information, judging whether a vehicle matched with the radio frequency identification information exists in the target vehicle, if so, executing S11, otherwise, executing S12.
S11: and storing the matched interval speed measurement result, the image identification information and the structural information in an associated manner.
S12: and storing the interval speed measurement result.
S13: and the matched interval speed measurement result and the image identification information are stored in an associated manner.
If the shooting condition is good, the identification of the image identification information is more accurate, the possibility that the brand numbers in the radio frequency identification information and the image identification information are consistent is high, the radio frequency identification information and the image identification information can be identified to be matched, the interval speed measurement result and the image identification information which can be used as evidence are prepared, law enforcement officers do not need to use other information and means to determine the vehicle speed or fix the evidence, and only need to store the interval speed measurement result and the image identification information in a correlation mode.
If the shooting condition is not good, the possibility of wrong image identification information is high, or the license plate number cannot be obtained from the shot picture at all, at this time, the missing content of the image identification information needs to be supplemented, the basic supplementary mode is to identify various feature points in the picture by using an image identification technology, abstract the information represented by the identified feature points, compare the abstracted information with the structural information stored in advance, find out the vehicle to which the structural information according with the abstracted information belongs from a large amount of structural information, namely the target vehicle, compare the license plate number of the target vehicle with the license plate number in the radio frequency identification information, the target vehicle with the same license plate number in the radio frequency identification information is the vehicle to which the radio frequency identification information and the image identification information belong, and the interval speed measurement result, the image identification information and the structural information can be stored in a correlated manner. If the target vehicle does not have the license plate number corresponding to the radio frequency identification information, it is indicated that the structural information of the vehicle is not collected, further fine identification and verification cannot be performed, and only the interval speed measurement result is stored and is reserved for work such as data analysis in the future.
The method of the embodiment collects the structural information of the vehicle, utilizes the structural information to identify the vehicle which cannot acquire the license plate by adopting the image identification information, supplements the license plate acquired by the image identification mode, can play a role in verifying the radio frequency identification information of the vehicle, and further improves the accuracy of vehicle identification, thereby bringing convenience to overspeed judgment of the vehicle and law enforcement of overspeed vehicles.
Referring to fig. 7 to 8, the present invention further provides a device for measuring speed of an interval based on dual-base identification, which includes an acquisition unit 1, a radio frequency position determination unit 2, an image position determination unit 3, a position matching unit 4, and a vehicle speed determination unit 5.
The acquisition unit 1 can adopt an electronic identification reading device and a shooting device and is used for acquiring radio frequency identification information and image identification information of a vehicle at a starting point and an ending point of an interval; the radio frequency position determining unit 2 may adopt a central processing unit and related circuits, and is configured to determine radio frequency position information of the vehicle according to the radio frequency identification information; the image position determination unit 3 may employ a central processing unit and associated circuitry for determining image position information of the vehicle based on the image identification information; the position matching unit 4 can adopt a central processing unit and a related circuit, and is used for comparing the radio frequency position information with the image position information to determine the radio frequency identification information and the image identification information of the same vehicle; the vehicle speed determination unit 5 may adopt a central processing unit and related circuits, and is configured to determine an actual vehicle speed according to the radio frequency identification information of the vehicle at the start point and the end point of the interval, and determine an interval speed measurement result according to the actual vehicle speed.
In an embodiment of the present invention, the interval speed measuring device based on bistatic identification further includes a structured information unit 6, a comprehensive analysis unit 7, and a storage unit 8.
The structured information unit 6 can adopt a central processing unit and related circuits for collecting and storing the structured information of the vehicle; the comprehensive analysis unit 7 may adopt a central processing unit and a related circuit, and is configured to determine whether the radio frequency identification information and the image identification information of the same vehicle are matched, compare the image identification information with the structural information, find out a plurality of target vehicles to which the structural information matched with the image identification information belongs, compare the structural information of the target vehicles with the radio frequency identification information, and determine whether a vehicle matched with the radio frequency identification information exists in the target vehicles; the storage unit 8 may adopt a central processing unit and a related circuit, and is configured to store the matched interval speed measurement result and the structured information in an associated manner, store the interval speed measurement result, and store the matched interval speed measurement result and the image identification information in an associated manner.
The central processing unit and the related circuits can be integrated into the same device to realize the respective functions. The implementation of each part of the functions of the apparatus has been described in detail above, and is not described herein again. By adopting the interval speed measuring device based on the double-base identification formed by the units, the steps of the method can be realized, and various beneficial effects of the method can be obtained.
The present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned interval velocity measurement method based on dual-basis identification, and can achieve the same technical effect, and the implementation of each step is described in detail in the foregoing, and is not described herein again. The computer readable storage medium may be a ROM (read only memory), a RAM (random access memory), a magnetic disk or an optical disk.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (9)
1. An interval speed measurement method based on double-base identification is characterized by comprising the following steps:
s1: collecting radio frequency identification information and image identification information of a vehicle at a starting point and an end point of an interval;
s2: determining radio frequency position information of the vehicle according to the radio frequency identification information;
s3: determining image position information of the vehicle according to the image identification information;
s4: comparing the radio frequency position information with the image position information to determine radio frequency identification information and image identification information of the same vehicle;
s5: determining the actual speed according to the radio frequency identification information or the image identification information of the vehicle at the starting point and the end point of the interval;
the S2 comprises the following steps:
s201: determining the incident angle of a signal returned by the electronic identification of the vehicle;
s202: determining radio frequency position information of the vehicle according to the incident angle and the distance between the antenna elements;
the radio frequency position information is the lane where each vehicle is located and the place where each vehicle is arranged in the lane.
2. The interval speed measurement method based on double-base identification as claimed in claim 1, further comprising
S6: and determining an interval speed measurement result according to the actual vehicle speed.
3. The interval velocity measurement method based on the bistatic identification according to claim 2, wherein the S6 includes:
s601: judging whether the actual vehicle speed is greater than a preset vehicle speed, if so, executing S602, and if not, executing S603;
s602: determining one of over speed of less than 10%, over speed of 10% -30%, over speed of 30% -50% and over speed of 50% as the speed measurement result of the interval according to the percentage that the actual speed is greater than the preset speed;
s603: and determining that the interval speed measurement result is not overspeed.
4. The interval velocity measurement method based on bistatic identification according to claim 3, wherein the S4 includes:
s401: judging whether the radio frequency identification information of the same vehicle at the starting point and the end point is complete, if so, executing S402, and if not, executing S403;
s402: calculating the average speed of the vehicle as the actual speed according to the distance between the starting point and the end point of the interval and the acquisition time of the radio frequency identification information of the starting point and the end point;
s403: deleting the stored radio frequency identification information of the starting point or the end point.
5. The interval speed measurement method based on bistatic identification according to claim 4, further comprising:
s7: collecting structured information of the vehicle; the structured information comprises a brand, a model and a color;
s8: judging whether the radio frequency identification information and the image identification information of the same vehicle are matched, if so, executing S13, otherwise, executing S9;
s9: comparing the image identification information with the structural information, and finding out a plurality of target vehicles to which the structural information matched with the image identification information belongs;
s10: comparing the structural information of the target vehicle with the radio frequency identification information, judging whether a vehicle matched with the radio frequency identification information exists in the target vehicle, if so, executing S11, otherwise, executing S12;
s11: storing the matched interval speed measurement result, image identification information and structural information in an associated manner;
s12: storing the interval speed measurement result;
s13: and storing the matched interval speed measurement result and the image identification information in an associated manner.
6. The interval speed measurement method based on the bistatic identification according to claim 5, wherein in S1, completion of the radio frequency identification information acquisition process triggers start of the image identification information acquisition process.
7. Interval speed sensor based on two base discernments, its characterized in that includes:
the acquisition unit is used for acquiring radio frequency identification information and image identification information of the vehicle at the starting point and the ending point of the section;
the radio frequency position determining unit is used for determining the radio frequency position information of the vehicle according to the radio frequency identification information;
an image position determining unit for determining image position information of the vehicle based on the image recognition information;
the position matching unit is used for comparing the radio frequency position information with the image position information and determining the radio frequency identification information and the image identification information of the same vehicle;
and the vehicle speed judging unit is used for determining the actual vehicle speed according to the radio frequency identification information of the vehicle at the starting point and the end point of the interval and determining the interval speed measurement result according to the actual vehicle speed.
8. The interval speed measuring device based on bistatic identification according to claim 7, further comprising:
the structured information unit is used for collecting and storing the structured information of the vehicle;
the comprehensive analysis unit is used for judging whether the radio frequency identification information and the image identification information of the same vehicle are matched, comparing the image identification information with the structural information, finding out a plurality of target vehicles to which the structural information matched with the image identification information belongs, comparing the structural information of the target vehicles with the radio frequency identification information, and judging whether vehicles matched with the radio frequency identification information exist in the target vehicles;
and the storage unit is used for storing the matched interval speed measurement result and the structural information in an associated manner, storing the interval speed measurement result, and storing the matched interval speed measurement result and the image identification information in an associated manner.
9. A computer readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor, implement the steps of the method of any one of claims 1 to 6.
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| TWI815399B (en) * | 2022-04-14 | 2023-09-11 | 中華電信股份有限公司 | Systme and method for verifying time accuracy of section speed measurement and computer program product |
| CN116721552B (en) * | 2023-06-12 | 2024-05-14 | 北京博宏科元信息科技有限公司 | Non-motor vehicle overspeed identification recording method, device, equipment and storage medium |
| CN117523863A (en) * | 2023-11-16 | 2024-02-06 | 包头城市云计算技术有限公司 | Interval speed measuring method, device, computer equipment and storage medium |
| CN117636671B (en) * | 2024-01-24 | 2024-04-30 | 四川君迪能源科技有限公司 | Cooperation scheduling method and system for intelligent vehicle meeting of rural roads |
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