CN116132916A - Communication detection method and system of vehicle-mounted unit, storage medium and electronic device - Google Patents

Communication detection method and system of vehicle-mounted unit, storage medium and electronic device Download PDF

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Publication number
CN116132916A
CN116132916A CN202211736889.0A CN202211736889A CN116132916A CN 116132916 A CN116132916 A CN 116132916A CN 202211736889 A CN202211736889 A CN 202211736889A CN 116132916 A CN116132916 A CN 116132916A
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China
Prior art keywords
vehicle
unit
communication
information
mounted unit
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CN202211736889.0A
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Chinese (zh)
Inventor
陈乐�
曹雪冬
马春香
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Beijing Wanji Technology Co Ltd
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Beijing Wanji Technology Co Ltd
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Priority to CN202211736889.0A priority Critical patent/CN116132916A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • 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
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)

Abstract

The application discloses a communication detection method and system of a vehicle-mounted unit, a storage medium and an electronic device, wherein the method comprises the following steps: in the process that a target vehicle provided with an on-board unit passes through a first area, acquiring first information transmitted by a road side unit in the first area through a preset data format, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between the first location and a second location corresponding to the on-board unit; if the first distance is smaller than or equal to the second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information. The problem that in the related art, communication abnormality of the vehicle-mounted unit and the road side unit cannot be found in time, so that a user can possibly receive error information is solved.

Description

Communication detection method and system of vehicle-mounted unit, storage medium and electronic device
Technical Field
The present invention relates to the field of vehicle communication, and in particular, to a communication detection method and system for an on-board unit, a storage medium, and an electronic device.
Background
In order to facilitate better interaction between a vehicle and an RSU (Road Side Unit), an OBU (On Board Unit) host and an antenna are usually separately disposed, the host is installed inside the vehicle, and the antenna is installed outside the vehicle, so as to ensure normal transmission and reception of radio frequency signals. However, the antennas of the aftermarket devices (e.g., shark fin type antennas) are affected by such factors as installation location and vehicle structural constraints, and the wiring and fastening patterns cannot be maintained consistently. The problems of poor contact, open circuit of the circuit and the like caused by uneven stress of the radio frequency connector exist, so that the actual use effect of the radio frequency connector is affected, and the radio frequency connector cannot be timely detected when communication between the OBU and the RSU is abnormal.
Disclosure of Invention
The embodiment of the application provides a communication detection method and system of a vehicle-mounted unit, a storage medium and an electronic device, which at least solve the problem that a user may receive error information because communication abnormality of an OBU and an RSU cannot be found in time in the related technology.
According to an aspect of the embodiments of the present application, there is provided a communication detection method of an on-board unit, including: in the process that a target vehicle provided with an on-board unit passes through a first area, acquiring first information transmitted by a road side unit in the first area through a preset data format, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between the first location and a second location corresponding to the on-board unit; and if the first distance is smaller than or equal to the second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information.
According to another aspect of the embodiments of the present application, there is also provided a communication detection system of an on-board unit, including: the vehicle-mounted unit is arranged on the target vehicle and used for acquiring first information in the process that the target vehicle passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between a second position corresponding to the vehicle-mounted unit and the first position; if the first distance is smaller than or equal to a second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to communication data corresponding to the first information; the road side units are oppositely arranged at two sides of a road in the first area and are used for transmitting corresponding first information to the vehicle-mounted units in the first area through a preset data format.
According to still another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium having a computer program stored therein, wherein the computer program is configured to perform the communication detection method of the on-board unit described above when executed.
According to still another aspect of the embodiments of the present application, there is further provided an electronic device including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor executes the communication detection method of the vehicle-mounted unit through the computer program.
In this embodiment of the present application, a manner of performing communication detection of an on-board unit by combining a preset data format with an effective communication distance between the on-board unit and a road side unit is adopted, and in a process that a target vehicle equipped with the on-board unit passes through a first area, first information transmitted by the road side unit in the first area through the preset data format is obtained, where the first information includes: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between the first location and a second location corresponding to the on-board unit; if the first distance is smaller than or equal to the second distance corresponding to the road type, whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined according to the communication data corresponding to the first information, and because the first information comprises a first position corresponding to the road side unit and the road type of the road where the road side unit is located, after the vehicle-mounted unit acquires the first information, the effective communication distance (namely the second distance) between the vehicle-mounted unit and the road side unit under the current road can be rapidly determined, and whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined by combining the first information transmitted by using a preset data format, so that the purpose of determining whether the vehicle-mounted unit of the vehicle to be tested is normal in communication or not by using the interaction information between the vehicle-mounted unit and the road side unit can be achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a hardware environment of an alternative communication detection method of an on-board unit according to an embodiment of the present application;
FIG. 2 is a flow chart of an alternative communication detection method of an on-board unit according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an after-mount OBU device according to an embodiment of the present application;
fig. 4 is a schematic view of an installation location of an afterloading OBU device according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an installation location of another after-mount OBU device according to an embodiment of the present application;
fig. 6 is a schematic diagram of a self-test flow of an aftermarket OBU device according to an embodiment of the present application;
Fig. 7 is a block diagram of an alternative electronic device according to an embodiment of the present application.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to one aspect of the embodiments of the present application, a communication detection method of an on-board unit is provided. Alternatively, in the present embodiment, the communication detection method of the on-board unit described above may be applied to a hardware environment including the detection section 102 and the data processor 104 as shown in fig. 1. As shown in fig. 1, the data processor 104 is connected to the detecting unit 102 through a network, and is operable to perform vehicle information identification based on the detection data of the detecting unit 102, where the detecting unit 102 and the data processor 104 may both belong to a vehicle information detection system.
The network may include, but is not limited to, at least one of: wired network, wireless network. The wired network may include, but is not limited to, at least one of: a wide area network, a metropolitan area network, a local area network, and the wireless network may include, but is not limited to, at least one of: WIFI (Wireless Fidelity ), bluetooth. In addition to being connected via a network, the detection component 102 and the data processor 104 can also be connected via a network cable or serial port.
The communication detection method of the vehicle-mounted unit in the embodiment of the present application may be executed by the data processor 104, or may be executed by the data processor 104 and the detection unit 102 together. Taking the data processor 104 as an example to execute the communication detection method of the on-board unit in the present embodiment, fig. 2 is a schematic flow chart of an alternative communication detection method of the on-board unit according to an embodiment of the present application, and as shown in fig. 2, the flow of the method may include the following steps:
Step S202, during a process that a target vehicle equipped with an on-board unit passes through a first area, acquiring first information transmitted by a road side unit in the first area through a preset data format, where the first information includes: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; the communication detection method of the vehicle-mounted unit in the present embodiment may be applied to a scenario in which vehicle communication detection is performed on passing vehicles in a preset area, where the preset area may be an effective communication area of the roadside unit. In addition, the above road type is used to indicate a communication environment corresponding to a road where the roadside unit is provided, for example, a scene of an intersection, a ramp, a high speed, or the like.
In the process that the target vehicle passes through the first area, the vehicle-mounted unit can acquire first information transmitted by the road side unit through a preset data format. The preset data format may be a V2X communication format, the V2X device may communicate in a UDP broadcast format, the signal reception does not distinguish the data source, and the device may receive broadcast signals from other devices. The V2X communication country has five kinds of messages BSM, RSI, RSM, SPAT, MAP in which information such as a device location is contained in a BSM (basic security message) to calculate a distance between devices. V2X may also communicate in unicast.
Step S204, determining a first distance between the first position and a second position corresponding to the vehicle-mounted unit;
here, the second position may be determined by a positioning system carried by the target vehicle, and the first distance may be calculated by the vehicle-mounted unit indicating the positioning system under the condition that the first position is known, which will not be described herein.
Step S206, if the first distance is less than or equal to the second distance corresponding to the road type, determining whether the communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information.
It should be noted that, the communication relationship between the road type and the second distance is a one-to-one correspondence determined in advance according to the historical communication record, that is, under the condition of knowing the road type, the effective communication distance corresponding to the road type can be determined from the preset distance list in the vehicle-mounted unit, so that real-time detection of communication between the vehicle-mounted unit and the road side unit is ensured.
Through the steps S202 to S206, in a manner of performing communication detection of the vehicle-mounted unit by combining a preset data format with an effective communication distance between the vehicle-mounted unit and the roadside unit, first information transmitted by the roadside unit in the first area through the preset data format is obtained in a process that a target vehicle provided with the vehicle-mounted unit passes through the first area, wherein the first information includes: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between the first location and a second location corresponding to the on-board unit; if the first distance is smaller than or equal to the second distance corresponding to the road type, whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined according to the communication data corresponding to the first information, and because the first information comprises a first position corresponding to the road side unit and the road type of the road where the road side unit is located, after the vehicle-mounted unit acquires the first information, the effective communication distance (namely the second distance) between the vehicle-mounted unit and the road side unit under the current road can be rapidly determined, and whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined by combining the first information transmitted by using a preset data format, so that the purpose of determining whether the vehicle-mounted unit of the vehicle to be tested is normal in communication or not by using the interaction information between the vehicle-mounted unit and the road side unit can be achieved.
In an exemplary embodiment, before determining whether there is a communication abnormality between the on-board unit and the roadside unit according to the communication data corresponding to the first information, the method further includes:
s11, acquiring a first time stamp of the first information transmitted by the road side unit and a second time stamp of the first information received by the vehicle-mounted unit;
s12, determining communication time delay of the vehicle-mounted unit and the road side unit according to the first time stamp and the second time stamp, wherein the communication data comprises: the communication delay.
In this embodiment, the time difference between the first timestamp and the second timestamp is determined, so that the transmission time corresponding to the first information can be determined, and because the first information transmitted by the road side unit through the preset data format has standard transmission time in a certain distance, the communication time delay of the first information transmitted between the vehicle-mounted unit and the road side unit can be determined by combining the standard transmission time and the transmission time, so as to provide a data reference of whether abnormal communication exists between the vehicle-mounted unit and the road side unit.
Optionally, before determining whether the on-board unit and the roadside unit have communication abnormality according to the communication data corresponding to the first information, the method further includes: the standard parameters of a first data packet corresponding to the first information transmitted by the road side unit and the data parameters of a second data packet of the first information received by the vehicle-mounted unit are obtained; and determining a packet loss rate according to the standard parameter and the data parameter, wherein the communication data comprises: and the packet loss rate. The standard parameter is a format parameter inherent to the data packet in the first information sent by the road side unit, and contains information such as the byte number of the data.
It can be understood that the first information is in a byte format and the number of bytes when the transmitted information is in a byte format, and when the number of bytes sent by the road side unit is greater than the number of bytes received by the vehicle-mounted unit, it indicates that the first information is lost in transmission. The quality of transfer between the on-board unit and the roadside unit may be determined based on the packet loss rate.
Optionally, determining whether the on-board unit and the roadside unit have communication abnormality according to the communication data corresponding to the first information includes: determining a parameter range corresponding to the road type stored in a database corresponding to the vehicle-mounted unit, wherein the parameter range comprises: a first numerical range corresponding to the packet loss rate and a second numerical range corresponding to the communication delay; under the condition that the communication data exceeds the parameter range, determining that the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value; performing communication function verification on the vehicle-mounted unit; and determining whether the probability of the communication abnormality of the vehicle-mounted unit is larger than a second threshold according to the verification result of the communication function verification, wherein the second threshold is larger than the first threshold.
It can be understood that different road types also correspond to different parameter ranges, and then whether the vehicle-mounted unit is abnormal or not can be effectively determined by combining the specific parameter ranges.
Optionally, the communication function verification of the vehicle-mounted unit includes: and the vehicle-mounted unit acquires information sent by other road side units, and determines whether communication abnormality exists between the vehicle-mounted unit and the other road side units according to the information sent by the other road side units. That is, when the communication result between the vehicle-mounted unit and the road side unit in the first area is abnormal, by the communication between the vehicle-mounted unit and other road side units (in different road scenes), whether the communication is abnormal is further verified, and it can be understood that the more the number of road side units participating in the verification is, the more accurate the verification result is.
Optionally, performing communication function verification on the on-board unit includes: determining the second information sent by the vehicle-mounted unit in a second area, wherein the second area is a communication range taking the vehicle-mounted unit as a center and using the second distance as a radius; the second information is identity information comprising the vehicle-mounted unit; and under the condition that the second information is responded by other equipment, determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to target communication data corresponding to the second information.
In this embodiment, after the communication data corresponding to the first information is obtained and exceeds the parameter range, the current vehicle-mounted unit is judged to be a suspected abnormal unit, in order to ensure the accuracy of determining the abnormality corresponding to the vehicle-mounted unit, the communication data between the vehicle-mounted unit and other devices can be verified through verification of the communication function, so that the accuracy of determining the result of the abnormal vehicle-mounted unit is ensured through repeated verification, and in addition, the efficiency and the accuracy of determining the vehicle-mounted unit to be the abnormal vehicle-mounted unit are greatly improved through secondary determination.
In an exemplary embodiment, determining whether there is a communication abnormality between the on-board unit and the other device according to the target communication data corresponding to the second information includes:
s21, acquiring a receiving record of the second information stored by the other equipment, and determining a third timestamp and a third byte corresponding to the second information recorded in the vehicle-mounted unit when the second information is sent out;
s22, analyzing the receiving record, and determining a fourth timestamp and a fourth byte corresponding to the second information when the second information is received by the other equipment;
s23, determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to the third timestamp, the third byte, the fourth timestamp and the fourth byte.
In this embodiment, by determining the communication data between the on-board unit and other devices again and comparing the communication data with the standard parameter range, it is then possible to determine whether there is an abnormality between the on-board unit and other devices, and then combine the abnormality determination results between the road side unit and the on-board device to finally obtain the abnormality of the on-board unit. It should be noted that the other devices may be other roadside units existing beside the road or vehicles including other vehicle-mounted units, and the devices have the same preset data format to ensure effective communication.
In an exemplary embodiment, determining whether there is a communication abnormality between the in-vehicle unit and the other device according to the third timestamp, the third byte, the fourth timestamp, and the fourth byte includes:
s31, when the target time delay corresponding to the third time stamp and the fourth time stamp is in a second numerical range and the packet loss rate corresponding to the third byte and the fourth byte is in a first numerical range, determining that no communication abnormality exists between the vehicle-mounted unit and the other equipment, and adding a communication normal identifier for the vehicle-mounted unit;
S32, when the target time delay corresponding to the third time stamp and the fourth time stamp is not in the second numerical range and/or the packet loss rate corresponding to the third byte and the fourth byte is not in the first numerical range, determining that communication abnormality exists between the vehicle-mounted unit and the other equipment, and adding a communication abnormality identifier for the vehicle-mounted unit.
In an exemplary embodiment, after determining whether the probability that the on-board unit has a communication abnormality is greater than a second threshold according to a verification result of the communication function verification, the method further includes:
s41, determining the vehicle-mounted unit as an abnormal unit when the probability of communication abnormality of the vehicle-mounted unit is larger than a second threshold value;
s42, determining the road side unit as an abnormal unit when the probability of the communication abnormality of the vehicle-mounted unit is smaller than or equal to a second threshold value and the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value.
According to the embodiment, according to the magnitude relation between the probability and the second threshold value and the magnitude relation between the probability and the first threshold value, the condition that the vehicle-mounted unit is an abnormal unit can be determined, and the accuracy of determining the corresponding communication state of the vehicle-mounted unit can be improved.
In an exemplary embodiment, after determining the first distance between the first location and the second location corresponding to the on-board unit, the method further includes:
s51, if the first distance is larger than a second distance corresponding to the road type, determining that the target vehicle does not enter an effective communication area of the road side unit in a first area;
and S52, displaying first prompt information to a target object in the target vehicle through the vehicle-mounted unit, wherein the first prompt information is used for indicating that the vehicle-mounted unit and the road side unit do not establish stable communication connection. Note that not establishing a stable communication connection means that stable and effective communication interaction cannot be achieved.
In this embodiment, whether the vehicle-mounted unit and the road side unit can effectively communicate is verified by determining the magnitude relation between the first distance and the second distance, and when effective communication is not established, prompting is performed, so that the communication effect of the vehicle-mounted unit and the road side unit is ensured, and the accuracy of communication detection can be improved.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. In order to better understand the adjustment method of the light shielding device, the following description will explain the above process with reference to the embodiments, but is not intended to limit the technical solution of the embodiments of the present invention, specifically:
Optionally, fig. 3 is a schematic structural diagram of an after-loading OBU device according to an embodiment of the present application, where an OBU (vehicle-mounted terminal) communicates with other devices through an external antenna (a shark fin antenna in fig. 3) of a FAKRA interface. The above antenna types are also other types of antennas, which are not described too much in this application.
Optionally, fig. 4 is a schematic diagram of an installation position of an after-loading OBU device according to an embodiment of the present application, as shown in fig. 4, the after-loading OBU device may be installed at a front end of a vehicle corresponding to a secondary driving position of the vehicle, or may be installed below seats on two sides of the vehicle, so that when the vehicle enters an effective communication area of a corresponding RSU device, information interaction may be performed between the OBU device and the RSU device; fig. 5 is a schematic diagram of an installation position of another post-loading OBU device according to an embodiment of the present application, as shown in fig. 5, when an OBU device needs to be added to a vehicle, the post-loading OBU device may be further placed behind a backrest of a seat, so that the communication of the OBU device is ensured to be normal while saving an installation space.
As an alternative implementation, fig. 6 is a schematic diagram of a self-checking flow of an after-loading OBU device according to an embodiment of the present application; the method has the advantages that under the effective communication distance of V2X between the OBU and the RSU, whether the V2X communication of the OBU device is normal or not can be judged by screening the communication time delay and the packet loss rate, so that a user is reminded of self-checking the device. In addition, the self-checking process can also integrate various road scenes and conclusion judgment among different V2X devices, so that the judgment accuracy can be effectively improved, and the method is specifically as follows:
And step 1, the OBU is positioned through a positioning system GNSS in the vehicle, and the corresponding position of the OBU is determined.
Step 2, the OBU performs information interaction with the RSU; when a vehicle equipped with the OBU travels within communication range with the RSU, the two interact with each other.
And 3, the RSU sends the self position and road type information to the OBU through V2X.
Step 4, the OBU identifies the road type, and determines the corresponding effective communication distance according to the road type; it should be noted that, the effective communication distance under the different road types corresponding to different scenes may be the effective communication distance between the OBU and the RSU determined through the test, or may be the effective communication distance determined by combining the historical communication records of the RSU and the OBU stored in the vehicle-mounted terminal.
And 5, judging a first conclusion, after the RSU and the OBU perform information interaction, the OBU calculates the communication distance between the RSU and the OBU, screening the communication delay and the packet loss rate generated by the communication between the OBU and the RSU by using a V2X communication mode, comparing the actual communication delay and the packet loss rate with the standard communication delay and the standard packet loss rate of the corresponding distance, and determining whether the communication of the installed OBU is abnormal or not in a communication scene combining the RSU and the OBU for information interaction.
Optionally, the above flow may be actually applied to a user self-checking scenario of an antenna of an OBU device, and when the OBU device receives V2X information, the message analysis is performed. And identifying indexes such as V2X communication distance, communication delay, packet loss rate and the like, and further determining the communication state between the OBU and the RSU.
Step 6, when the communication of the OBU is determined to be in an abnormal state, the OBU communicates with other surrounding devices with V2X communication modes, and mutual positioning information is interacted; and retest the V2X communication delay, the packet loss rate and the like, thereby determining that the abnormal communication of the OBU is caused by the OBU, avoiding the judgment interference caused by the RSU abnormality, storing a test log when retest determines that the OBU communication is in a normal state, and synchronizing information to the RSU.
And 7, when the communication of the OBU is determined to be in a normal state, storing a test log, and synchronizing information to the RSU.
Step 8, forming conclusion judgment of the OBU under different road scenes; and/or a conclusion determination between the OBU and a different V2X device.
Step 9, second conclusion judgment, namely, carrying out weight calculation according to the OBU accumulated multiple judgment results and comprehensively judging the conclusion;
for example, when the number of times of determining whether the communication between the OBU and the RSU is abnormal is 5, wherein the occurrence of the abnormality of the OBU is determined by 2 times of interaction between the RSU and the OBU (the RSU may be a device under a different road scene), the abnormality of the OBU is determined by 3 times of communication between the OBU and other OBU devices (the other OBU devices may be other vehicle OBU devices under the current scene), and when the abnormality weight corresponding to the RSU is set to 0.7 and the abnormality weight corresponding to the other OBU devices is set to 0.3, the probability of the final abnormality of the OBU is (2/5) ×0.7+ (3/5) ×0.3=0.46. And finally, determining whether the OBU is abnormal or not by combining preset thresholds corresponding to different road types. Optionally, when the preset threshold is 0.3, it may be determined that the OBU with the final anomaly probability of 0.46 is the OBU for anomaly communication, so as to remind the use of the target object of the target vehicle to detect the OBU installed in the vehicle.
And step 10, when the retest determines that the OBU communication is in an abnormal state, and/or the second conclusion determines that the OBU communication is in an abnormal state, the OBU triggers communication abnormal early warning. And the second conclusion judges that the OBU communication is in a normal state, and the process is ended.
Optionally, the actions that can be triggered after the early warning occurs are: the self-checking of the communication module of the equipment, the checking of the physical connection of the antenna by the equipment user, the checking action is determined by the actual situation, and in addition, the corresponding reminding frequency of the early warning can be set, so that the reminding of the target object is kept before the communication abnormality is not solved.
Step 11, self-checking of a device communication module, radio frequency link, connector checking and the like.
In summary, through the analysis of the OBU device to the V2X information, confirm that OBU is at actual communication time delay and the actual packet loss rate that corresponds with RSU under V2X effective communication distance, compare with the range value of corresponding communication time delay and packet loss rate, judge whether OBU is unusual to form the self-checking ability to the afterloading OBU device antenna state.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM (Read-Only Memory)/RAM (Random Access Memory), magnetic disk, optical disk), including instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the embodiments of the present application.
According to another aspect of the embodiments of the present application, there is also provided a communication detection system of an on-board unit for implementing the communication detection method of an on-board unit. The communication detection system of the in-vehicle unit may include:
the vehicle-mounted unit is arranged on the target vehicle and used for acquiring first information in the process that the target vehicle passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between a second position corresponding to the vehicle-mounted unit and the first position; if the first distance is smaller than or equal to a second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to communication data corresponding to the first information;
The road side unit is used for transmitting corresponding first information to the vehicle-mounted unit in the first area (the effective communication area of the road side unit) through a preset data format.
According to the communication detection system of the vehicle-mounted unit, a mode of carrying out communication detection of the vehicle-mounted unit by combining a preset data format with an effective communication distance between the vehicle-mounted unit and the road side unit is adopted, and first information transmitted by the road side unit in a first area through the preset data format is obtained in the process that a target vehicle provided with the vehicle-mounted unit passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between the first location and a second location corresponding to the on-board unit; if the first distance is smaller than or equal to the second distance corresponding to the road type, whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined according to the communication data corresponding to the first information, and because the first information comprises a first position corresponding to the road side unit and the road type of the road where the road side unit is located, after the vehicle-mounted unit acquires the first information, the effective communication distance (namely the second distance) between the vehicle-mounted unit and the road side unit under the current road can be rapidly determined, and whether the vehicle-mounted unit and the road side unit are abnormal in communication or not is determined by combining the first information transmitted by using a preset data format, so that the purpose of determining whether the vehicle-mounted unit of the vehicle to be tested is normal in communication or not by using the interaction information between the vehicle-mounted unit and the road side unit can be achieved.
In an exemplary embodiment, the on-board unit is further configured to obtain a standard parameter of a first data packet corresponding to the first information transmitted by the roadside unit, and determine a data parameter of a second data packet that receives the first information; and determining a packet loss rate according to the standard parameter and the data parameter, wherein the communication data comprises: and the packet loss rate.
In an exemplary embodiment, the on-board unit is further configured to obtain a first timestamp of the first information transmitted by the roadside unit, and determine a second timestamp of the first information received; determining communication delay between the vehicle-mounted unit and the road side unit according to the first timestamp and the second timestamp, wherein the communication data comprises: the communication delay.
In an exemplary embodiment, the on-board unit is further configured to determine a parameter range corresponding to the road type stored in a database, where the parameter range includes: a first numerical range corresponding to the packet loss rate and a second numerical range corresponding to the communication delay; under the condition that the communication data exceeds the parameter range, determining that the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value; performing communication function verification on the vehicle-mounted unit; and determining whether the probability of the communication abnormality of the vehicle-mounted unit is larger than a second threshold according to the verification result of the communication function verification, wherein the second threshold is larger than the first threshold.
In an exemplary embodiment, the on-board unit is further configured to send the second information in a second area, where the second area is a communication range with the on-board unit as a center and the second distance is a radius; the second information is identity information comprising the vehicle-mounted unit; and under the condition that the second information is responded by other equipment, determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to target communication data corresponding to the second information.
In an exemplary embodiment, the on-board unit is further configured to obtain a receiving record of the second information stored in the other device, and determine a third timestamp and a third byte corresponding to the second information recorded in the on-board unit when sent out; analyzing the receiving record, and determining a fourth timestamp and a fourth byte corresponding to the second information when the second information is received by the other equipment; and determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to the third timestamp, the third byte, the fourth timestamp and the fourth byte.
In an exemplary embodiment, the on-board unit is further configured to determine that no communication abnormality exists between the on-board unit and the other device when the target time delays corresponding to the third timestamp and the fourth timestamp are in a second numerical range and the packet loss rates corresponding to the third byte and the fourth byte are in a first numerical range, and add a communication normal identifier to the on-board unit; and determining that communication abnormality exists between the vehicle-mounted unit and other equipment when the target time delay corresponding to the third time stamp and the fourth time stamp is not in a second numerical range and/or the packet loss rate corresponding to the third byte and the fourth byte is not in a first numerical range, and adding a communication abnormality identifier to the vehicle-mounted unit.
In an exemplary embodiment, the on-board unit is further configured to determine that the on-board unit is an abnormal unit if a probability that the on-board unit has a communication abnormality is greater than a second threshold; and determining the road side unit as an abnormal unit when the probability of the communication abnormality of the vehicle-mounted unit is smaller than or equal to a second threshold value and the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value.
In an exemplary embodiment, the on-board unit is further configured to determine that the target vehicle does not enter the effective communication area of the road-side unit in the first area when the first distance is greater than a second distance corresponding to the road type; and displaying first prompt information to a target object in the target vehicle through the vehicle-mounted unit, wherein the first prompt information is used for indicating that the vehicle-mounted unit and the road side unit are not in stable communication connection.
It should be noted that the above modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to what is disclosed in the above embodiments. It should be noted that the above modules may be implemented in software or in hardware as part of the apparatus shown in fig. 1, where the hardware environment includes a network environment.
According to yet another aspect of embodiments of the present application, there is also provided a storage medium. Alternatively, in the present embodiment, the storage medium may be used to execute a program code of the communication detection method of any of the on-board units described in the embodiments of the present application.
Alternatively, in this embodiment, the storage medium may be located on at least one network device of the plurality of network devices in the network shown in the above embodiment.
Alternatively, in the present embodiment, the storage medium is configured to store program code for performing the steps of:
s1, acquiring first information transmitted by a road side unit in a first area through a preset data format in the process that a target vehicle provided with a vehicle-mounted unit passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located;
s2, determining a first distance between the first position and a second position corresponding to the vehicle-mounted unit;
and S3, if the first distance is smaller than or equal to the second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information.
Alternatively, specific examples in the present embodiment may refer to examples described in the above embodiments, which are not described in detail in the present embodiment.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a U disk, ROM, RAM, a mobile hard disk, a magnetic disk or an optical disk.
According to still another aspect of the embodiments of the present application, there is also provided an electronic device for implementing the communication detection method of the on-board unit described above, where the electronic device may be a server, a terminal, or a combination thereof.
Fig. 7 is a block diagram of an alternative electronic device, according to an embodiment of the present application, including a processor 1102, a communication interface 1104, a memory 1106 and a communication bus 1108, as shown in fig. 7, wherein the processor 1102, the communication interface 1104 and the memory 1106 communicate with each other via the communication bus 1108, wherein,
a memory 1106 for storing a computer program;
the processor 1102 is configured to execute the computer program stored in the memory 1106, and implement the following steps:
s1, acquiring first information transmitted by a road side unit in a first area through a preset data format in the process that a target vehicle provided with a vehicle-mounted unit passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located;
S2, determining a first distance between the first position and a second position corresponding to the vehicle-mounted unit;
and S3, if the first distance is smaller than or equal to the second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information.
Alternatively, the communication bus may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or an EISA (Extended Industry Standard Architecture ) bus, or the like. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, only one thick line is shown in fig. 7, but not only one bus or one type of bus. The communication interface is used for communication between the electronic device and other equipment.
The memory may include RAM or may include non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general purpose processor and may include, but is not limited to: CPU (Central Processing Unit ), NP (Network Processor, network processor), etc.; but also DSP (Digital Signal Processing, digital signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments, and this embodiment is not described herein.
It will be understood by those skilled in the art that the structure shown in fig. 7 is only schematic, and the device implementing the communication detection method of the vehicle-mounted unit may be a terminal device, and the terminal device may be a smart phone (such as an Android mobile phone, an iOS mobile phone, etc.), a tablet computer, a palm computer, a mobile internet device (Mobile Internet Devices, MID), a PAD, etc. Fig. 7 is not limited to the structure of the electronic device. For example, the electronic device may also include more or fewer components (e.g., network interfaces, display devices, etc.) than shown in FIG. 7, or have a different configuration than shown in FIG. 7.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program for instructing a terminal device to execute in association with hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: flash disk, ROM, RAM, magnetic or optical disk, etc.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
The integrated units in the above embodiments may be stored in the above-described computer-readable storage medium if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause one or more computer devices (which may be personal computers, servers or network devices, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, such as the division of the units, is merely a logical function division, and may be implemented in another manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in the present embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or at least two units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.

Claims (13)

1. A communication detection method of an on-board unit, comprising:
in the process that a target vehicle provided with an on-board unit passes through a first area, acquiring first information transmitted by a road side unit in the first area through a preset data format, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located;
Determining a first distance between the first location and a second location corresponding to the on-board unit;
and if the first distance is smaller than or equal to the second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to the communication data corresponding to the first information.
2. The method of claim 1, wherein before determining whether there is a communication abnormality between the on-board unit and the roadside unit according to the communication data corresponding to the first information, the method further comprises: acquiring a first time stamp of the first information transmitted by the road side unit and a second time stamp of the first information received by the vehicle-mounted unit;
determining communication delay between the vehicle-mounted unit and the road side unit according to the first timestamp and the second timestamp, wherein the communication data comprises: the communication delay.
3. The method of claim 1, wherein before determining whether there is a communication abnormality between the on-board unit and the roadside unit according to the communication data corresponding to the first information, the method further comprises: the standard parameters of a first data packet corresponding to the first information transmitted by the road side unit and the data parameters of a second data packet of the first information received by the vehicle-mounted unit are obtained;
And determining a packet loss rate according to the standard parameter and the data parameter, wherein the communication data comprises: and the packet loss rate.
4. A method according to any one of claims 1 to 3, wherein determining whether there is a communication abnormality between the on-board unit and the roadside unit based on the communication data corresponding to the first information, comprises:
determining a parameter range corresponding to the road type stored in a database corresponding to the vehicle-mounted unit, wherein the parameter range comprises: a first numerical range corresponding to the packet loss rate and a second numerical range corresponding to the communication delay;
under the condition that the communication data exceeds the parameter range, determining that the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value;
performing communication function verification on the vehicle-mounted unit;
and determining whether the probability of the communication abnormality of the vehicle-mounted unit is larger than a second threshold according to the verification result of the communication function verification, wherein the second threshold is larger than the first threshold.
5. The method of claim 4, wherein the communication function verification of the on-board unit comprises: and the vehicle-mounted unit acquires information sent by other road side units, and determines whether communication abnormality exists between the vehicle-mounted unit and the other road side units according to the information sent by the other road side units.
6. The method of claim 4, wherein the communication function verification of the on-board unit comprises:
determining second information sent by the vehicle-mounted unit in a second area, wherein the second area is a communication range taking the vehicle-mounted unit as a center and using the second distance as a radius; the second information is identity information comprising the vehicle-mounted unit;
and under the condition that the second information is responded by other equipment, determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to target communication data corresponding to the second information.
7. The method of claim 6, wherein determining whether there is a communication abnormality between the in-vehicle unit and the other device according to the target communication data corresponding to the second information, comprises:
acquiring a receiving record of the second information stored by the other equipment, and determining a third timestamp and a third byte corresponding to the second information recorded in the vehicle-mounted unit when the second information is sent out;
analyzing the receiving record, and determining a fourth timestamp and a fourth byte corresponding to the second information when the second information is received by the other equipment;
And determining whether communication abnormality exists between the vehicle-mounted unit and the other equipment according to the third timestamp, the third byte, the fourth timestamp and the fourth byte.
8. The method of claim 7, wherein determining whether there is a communication anomaly with the other device for the on-board unit based on the third timestamp, the third byte, the fourth timestamp, and the fourth byte comprises:
when the target time delay corresponding to the third time stamp and the fourth time stamp is in a second numerical range and the packet loss rate corresponding to the third byte and the fourth byte is in a first numerical range, determining that no communication abnormality exists between the vehicle-mounted unit and the other equipment, and adding a communication normal identifier for the vehicle-mounted unit;
and determining that communication abnormality exists between the vehicle-mounted unit and other equipment when the target time delay corresponding to the third time stamp and the fourth time stamp is not in a second numerical range and/or the packet loss rate corresponding to the third byte and the fourth byte is not in a first numerical range, and adding a communication abnormality identifier to the vehicle-mounted unit.
9. The method according to claim 4, wherein after determining whether the probability of the on-board unit having a communication abnormality is greater than a second threshold based on a verification result of the communication function verification, the method further comprises:
determining that the vehicle-mounted unit is an abnormal unit under the condition that the probability of communication abnormality of the vehicle-mounted unit is larger than a second threshold value;
and determining the road side unit as an abnormal unit when the probability of the communication abnormality of the vehicle-mounted unit is smaller than or equal to a second threshold value and the probability of the communication abnormality of the vehicle-mounted unit is larger than a first threshold value.
10. The method of claim 1, wherein after determining the first distance between the first location and the second location corresponding to the on-board unit, the method further comprises:
if the first distance is greater than a second distance corresponding to the road type, determining that the target vehicle does not enter an effective communication area of the road side unit in a first area;
and displaying first prompt information to a target object in the target vehicle through the vehicle-mounted unit, wherein the first prompt information is used for indicating that the vehicle-mounted unit and the road side unit are not in stable communication connection.
11. A communication detection system of an on-board unit, comprising:
the vehicle-mounted unit is arranged on the target vehicle and used for acquiring first information in the process that the target vehicle passes through the first area, wherein the first information comprises: the first position corresponding to the road side unit and the road type of the road where the road side unit is located; determining a first distance between a second position corresponding to the vehicle-mounted unit and the first position; if the first distance is smaller than or equal to a second distance corresponding to the road type, determining whether communication abnormality exists between the vehicle-mounted unit and the road side unit according to communication data corresponding to the first information;
the road side units are oppositely arranged at two sides of a road in the first area and are used for transmitting corresponding first information to the vehicle-mounted units in the first area through a preset data format.
12. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored program, wherein the program when run performs the method of any one of claims 1 to 10.
13. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to perform the method of any of claims 1 to 10 by means of the computer program.
CN202211736889.0A 2022-12-30 2022-12-30 Communication detection method and system of vehicle-mounted unit, storage medium and electronic device Pending CN116132916A (en)

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