CN115223270A - Vehicle-mounted terminal and antenna connection diagnosis method thereof - Google Patents

Vehicle-mounted terminal and antenna connection diagnosis method thereof Download PDF

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Publication number
CN115223270A
CN115223270A CN202111223358.7A CN202111223358A CN115223270A CN 115223270 A CN115223270 A CN 115223270A CN 202111223358 A CN202111223358 A CN 202111223358A CN 115223270 A CN115223270 A CN 115223270A
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antenna
log
state
connection
vehicle
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曺长铉
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Hyundai Mobis Co Ltd
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Hyundai Mobis Co Ltd
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/006—Indicating maintenance
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
    • G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Signal Processing (AREA)
  • Emergency Management (AREA)

Abstract

Provided is an antenna connection diagnosis method for an in-vehicle terminal of an automatic toll collection system. The method comprises the following steps: confirming an antenna connection state when the vehicle-mounted terminal is in a power-on state; a step of generating log information of the antenna based on the connection state of the antenna; and diagnosing the connection state of the antenna based on the log information, wherein the log information of the antenna includes a state log of the antenna and an event log recording an alteration history of the state log.

Description

Vehicle-mounted terminal and antenna connection diagnosis method thereof
Technical Field
The invention relates to a vehicle-mounted terminal and an antenna connection diagnosis method thereof.
Background
Recently, toll roads including expressways are equipped with an automatic Toll Collection System (ETCS) to ensure smooth traffic. Generally, an automatic toll collection system is an automatic electronic toll collection system, which processes toll fees of an expressway in a vehicle driving state through wireless communication, and includes an electronic card, an On Board Unit (OBU), and a Road Side base station (RSE). And after the road side base station identifies the vehicle and sends payment request information to the vehicle-mounted terminal, the vehicle-mounted terminal reads the payment information of the electronic card and sends the payment information to the road side base station, and the road side base station executes payment by using the payment information of the electronic card.
One or two antennas for transmitting and receiving data to and from the vehicle-mounted terminal are installed in such a roadside base station, and the communication radius of the roadside base station is determined by the antennas.
On the other hand, under the condition that the connector falls off in the driving process due to the fact that the operator is not connected with the antenna or the connector is not plugged, the roadside base station and the antenna of the vehicle-mounted terminal cannot communicate with each other, and therefore the cost cannot be collected. In this case, in the conventional technique, it is not known whether the cause of the failure is a temporary communication failure, a defective connector, or the like, and therefore it is difficult to resolve the failure.
Disclosure of Invention
Technical problem
The technical problem to be solved by the invention is to provide a vehicle-mounted terminal and an antenna connection diagnosis method thereof, wherein the antenna connection state of the vehicle-mounted terminal is recorded as log information, and the connection state of an antenna can be diagnosed based on the log information.
However, the technical problem to be solved by the present invention is not limited to the above-described technical problem, but other technical problems may also be present.
Technical scheme
An antenna connection diagnosis method for an in-vehicle terminal of an automatic toll collection system according to a first aspect of the present invention for solving the above-described technical problem includes: confirming an antenna connection state when the vehicle-mounted terminal is in a power-on state; a step of generating log information of the antenna based on the connection state of the antenna; and a step of diagnosing the connection state of the antenna based on the log information. Here, the log information of the antenna includes a status log of the antenna and an event log in which a history of change of the status log is recorded.
In some embodiments of the present invention, the step of generating log information of the antenna based on the connection state of the antenna may include: confirming a previous status log of the antenna; recording an event log as an antenna connection event log or an antenna disconnection event log based on a connection state confirmation result of the antenna when the previous state log of the antenna is not identical to the current state; and recording the status log as an antenna connection status log or an antenna disconnection status log based on the result of confirming the connection status of the antenna.
In some embodiments of the present invention, the step of generating log information of the antenna based on the connection state of the antenna in a case where the result of confirming the connection state of the antenna is connected includes a step of recording an antenna connection event log in the event log in a case where a previous state log of the antenna is set as an initial value; and recording an antenna connection status log in the status log so as to correspond to the antenna connection event log, wherein the cable of the antenna can be diagnosed as being in a normal state or a DTC circuit part failure state of the vehicle-mounted terminal in the step of diagnosing the antenna connection status based on the status log and the event log.
In some embodiments of the present invention, the step of generating log information of the antenna based on the connection state of the antenna when the antenna is not connected as a result of checking the connection state of the antenna includes omitting the step of recording the state log and the event log when a previous state log of the antenna is set as an initial value, and the step of diagnosing the connection state of the antenna based on the state log and the event log can diagnose that the antenna is not connected or a DTC circuit unit of the in-vehicle terminal is in a bad state when the vehicle is taken out of the warehouse.
In some embodiments of the present invention, the step of generating log information of the antenna based on the connection state of the antenna in a case where the result of confirming the connection state of the antenna is unconnected includes the step of recording an antenna unconnected event log in the event log in a case where a previous state log of the antenna is recorded as an antenna connection state log; and a step of recording an antenna non-connection state log in the state log so as to correspond to the antenna non-connection event log, wherein at least one of an antenna connection failure at the time of assembly before the vehicle is taken out of the garage, an antenna connection failure due to an operation after the vehicle is taken out of the garage, and an antenna connection failure due to an unstable connection state can be diagnosed in the step of diagnosing the antenna connection state based on the state log and the event log.
In some embodiments of the present invention, the step of generating log information of the antenna based on the connection state of the antenna in a case where a result of confirming the connection state of the antenna is connected includes a step of recording an antenna connection event log in an event log in a case where a previous state log of the antenna is set as an antenna unconnected event log; and recording an antenna connection state log in the state log so as to correspond to the antenna connection event log, wherein in the step of diagnosing the antenna connection state based on the state log and the event log, at least one of an antenna connection failure at the time of assembly before the vehicle is taken out of a warehouse, an antenna connection failure due to an operation after the vehicle is taken out of the warehouse, and an antenna connection failure due to an unstable connection state can be diagnosed.
The method also comprises the step of confirming the communication state between the vehicle-mounted terminal and the road side base station; and a step of generating log information of the antenna based on the communication state confirmation result.
In some embodiments of the present invention, in a case where the result of confirming the communication state is a communication-enabled state, the step of generating log information of the antenna based on the communication state confirmation result may include a step of confirming a previous state log of the antenna; a step of determining whether to record an event log based on whether a previous state log of the antenna is identical to a current state; and recording the initial communication time log based on whether the initial communication time log included in the antenna state log is recorded or not.
In some embodiments of the present invention, in the step of diagnosing the connection state of the antenna based on the log information, when the event log is recorded and the initial communication time log is recorded or is newly recorded, it is possible to diagnose at least one of the antenna connection failure due to the operation after the vehicle is taken out of the garage and the antenna connection failure due to the unstable connection state.
In some embodiments of the present invention, in the case where the result of confirming the communication status is the status in which communication is impossible, the step of generating log information of the antenna based on the result of confirming the communication status may include the step of determining whether to record an event log based on whether a previous status log of the antenna is identical to a current status; and recording the initial communication time log based on whether the initial communication time log included in the state log of the antenna is recorded or not.
In some embodiments of the present invention, in the step of recording the initial communication time log based on whether or not the initial communication time log included in the state log of the antenna is recorded, when the initial communication time log is already recorded, the state change parameter included in the initial communication time log may be recorded as a parameter corresponding to the antenna disconnection.
In some embodiments of the present invention, in the step of diagnosing the connection state of the antenna based on the log information, when the initial communication time log is recorded or is newly recorded, it is possible to diagnose at least one of the connection failure of the antenna due to the operation after the vehicle is taken out of the garage and the connection failure of the antenna due to the unstable connection state.
In some embodiments of the present invention, when the initial communication time log is recorded as an initial value in the step of diagnosing the connection state of the antenna based on the log information, at least one of an antenna connection failure at the time of assembly before the vehicle is taken out of a warehouse, an antenna connection failure due to an operation after the vehicle is taken out of a warehouse, and an antenna connection failure due to an unstable connection state can be diagnosed.
Also, an in-vehicle terminal for an automatic toll collection system capable of diagnosing antenna connection according to a second aspect of the present invention includes: a communication unit for transmitting and receiving data to and from a roadside base station based on a predetermined antenna; the vehicle-mounted terminal comprises a judging part for judging the connection state of the antenna when the vehicle-mounted terminal is in a power-on state, and a control part for generating the log information of the antenna based on the connection state of the antenna and diagnosing the connection state of the antenna based on the log information. Here, the log information of the antenna may include a status log of the antenna and an event log in which a change history of the status log is recorded.
A computer program of another aspect of the present invention for solving the above-described technical problem is stored in a computer-readable storage medium that executes an antenna connection diagnosis method on the in-vehicle terminal in conjunction with a computer as hardware.
Other embodiments of the invention are included in the detailed description and the accompanying drawings.
Technical effects
According to one embodiment of the invention, after the antenna state information of the vehicle-mounted terminal is confirmed, the alarm prompt can be provided for the user according to the state information.
Also, there are advantages in that an accurate error type can be grasped from log information of the connection state of the antenna and a diagnosis result corresponding thereto can be provided.
The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art based on the following descriptions.
Drawings
Fig. 1 is a flow diagram of an antenna connection diagnostic method according to one embodiment of the invention;
FIG. 2 is a flow diagram illustrating a process of generating log information according to one embodiment of the invention;
3 a-3 c are diagrams illustrating various embodiments of generating log information;
fig. 4 is a flowchart showing the contents of an initial communication time log according to a communication state after connecting an antenna in one embodiment of the present invention;
fig. 5a to 5d are diagrams for explaining various embodiments of generating log information according to a communication state after connecting an antenna;
fig. 6 is a block diagram of a vehicle-mounted terminal according to an embodiment of the present invention.
Description of the reference numerals
100: the in-vehicle terminal 110: communication unit
120: the determination unit 130: control unit
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the following detailed description of illustrative embodiments and the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms different from each other, and the embodiments are only for the purpose of making the disclosure of the present invention more complete, so that those skilled in the art to which the present invention pertains can easily understand the scope of the present invention, and the present invention is defined by the scope of the technical solutions.
The terms used in the present specification are used for describing the embodiments, and are not intended to limit the present invention. In this specification, the singular forms also include the plural forms unless otherwise specifically mentioned in the sentence. The term "comprising" and/or "including" used in the specification means that one or more other components are not excluded or added in addition to the components mentioned above. Throughout the specification, the same reference numerals denote the same constituent elements, and "and/or" includes each and all combinations of one or more of the constituent elements mentioned. Although "first", "second", and the like are used to describe various constituent elements, it is apparent that these constituent elements are not limited by these terms. These terms are only used to distinguish one constituent element from another constituent element. Therefore, the first component mentioned below may be the second component within the technical idea of the present invention.
Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in the same sense as commonly understood by one of ordinary skill in the art to which this invention belongs. Also, terms defined in commonly used dictionaries should not be interpreted ideally or transitionally without explicit special definition.
An antenna connection diagnosis method (hereinafter, an antenna connection diagnosis method) of the in-vehicle terminal 100 for the automatic toll collection system according to an embodiment of the present invention is explained with reference to fig. 1 to 5d as follows.
Fig. 1 is a flow diagram of an antenna connection diagnostic method according to one embodiment of the present invention.
It should be understood that the steps shown in fig. 1 are executed by the in-vehicle terminal 100, but the present invention is not limited thereto.
The vehicle-mounted terminal 100 is installed inside a vehicle (e.g., an automobile) moving on a road where a roadside base station is installed or mounted on the roof of the vehicle, and can transmit and receive data to and from the roadside base station while the vehicle is moving.
The Communication process between the in-vehicle terminal 100 and the roadside base station may be performed by Dedicated Short Range Communication (DSRC) in a Short Range Dedicated Communication band, but is not limited thereto. Of course, other various next generation frequency bands such as WAVE (Wireless Access In temporal Environment) frequencies may also be included.
The communication process with the road-side base station may represent, for example, a series of steps for transmitting and receiving a request and a response signal to and from the road-side base station.
The roadside base station communicates with the vehicle-mounted terminal 100 of a vehicle entering its coverage area in a state of being installed beside a road (e.g., an expressway) on which the vehicle moves.
Referring to fig. 1, first, the in-vehicle terminal 100 confirms the antenna connection state when the power of the in-vehicle terminal 100 becomes the on state after the vehicle starts to become the on state (S110). The in-vehicle terminal 100 initializes the basic function after the power is turned on and then confirms the connection state information of the antenna.
After that, log information of the antenna is generated according to the connection state of the antenna (S120).
As one example, the log information of the antenna may include a status log, an event log, and an initial communication time log of the antenna.
The status log is log information recorded to know the connection and disconnection status of the antenna cable of the vehicle-mounted terminal 100 at present.
The event log records the change history of the status log, and therefore, the connection history of the antenna cable can be confirmed by the event log. At this time, the event log may be stored as 255 bytes at the maximum, and may include a communication failure log storage area (1 block).
The initial communication time log records an initial communication time with the roadside base station. Here, when the state log is changed from the connected state to the unconnected state after the initial communication time log is initially stored, the state change parameter value included in a predetermined position of the initial communication time log is recorded as a parameter value corresponding to the antenna disconnection.
One embodiment of the present invention can confirm whether or not the antenna is connected and the history of antenna detachment after normal communication based on such log information. The log information suitable for one embodiment of the present invention is as follows in table 1.
[ Table 1]
Figure BDA0003313416360000071
Then, the connection state of the antenna is diagnosed based on the log information (S130). As a result of the diagnosis of the connection state of the antenna in one embodiment of the present invention, it is possible to generate and confirm a plurality of diagnosis results, such as whether or not there is no connection due to the vehicle being taken out of the garage, whether or not there is no connection due to the vehicle being assembled before being taken out of the garage, and whether or not there is no connection due to the operation after being taken out of the garage, as will be described in detail below.
FIG. 2 is a flow diagram illustrating a process of generating log information according to one embodiment of the invention. Fig. 3a to 3c are schematic diagrams for explaining various embodiments of generating log information.
Before the description, the state information of the antenna corresponding to each of the state log and the event log and the initial communication time log in one embodiment of the present invention is as follows in table 2, and the embodiment according to each state information described in table 2 is specifically described below with reference to fig. 2 to 5 d.
[ Table 2]
Figure BDA0003313416360000072
Figure BDA0003313416360000081
In one embodiment of the present invention, when the power supply of the in-vehicle terminal 100 is turned on, the connection state of the antenna is first confirmed, and log information of the antenna is generated based on the connection state of the antenna.
Here, the previous state log of the antenna is confirmed, and in the case where the previous state log of the antenna is different from the current state, the event log may be recorded as an antenna connection event log or a non-connection event log based on the connection state confirmation result of the antenna.
Also, based on the result of the confirmation of the connection state of the antenna, the state log can be recorded as an antenna connection state log or an antenna disconnection state log.
First, fig. 3a shows an initial state where there is no antenna connection history at one time, and the previous state log is recorded as an initial value of '00', and shows a state where there is no communication history with the roadside base station (date: 0000).
In this state, the vehicle-mounted terminal 100 is powered ON with the start-up (ON) of the vehicle, and the connection state of the antenna is confirmed (S210). If the antenna is already connected as a result of the confirmation (S210-Y), the previous status log is confirmed. If the state log is recorded as the initial value '00' as a result of the confirmation (S215-Y), an antenna connection event log (AC) is recorded in the event log (S220). Then, an antenna connection status log (AC) is recorded in the status log so as to correspond to the antenna connection event log (AC) (S225).
In this embodiment, the connection state of the antenna can be diagnosed as a normal state, and since the communication connection or non-confirmation is not yet made, a DTC circuit section failure state of the in-vehicle terminal 100 can be diagnosed. The diagnosis result as to whether the communication state is accurate in this case may be determined according to the communication connection state with the roadside base station later.
As still another embodiment, when the in-vehicle terminal 100 is turned on to turn on the power supply following the start of the vehicle, the connection state of the antenna is confirmed (S210). If the antenna is not connected as a result of the confirmation (S210-N), the previous status log is confirmed. If the confirmation result is that the previous status log is recorded as the initial value '00' (S230-Y), the status log and the event log are not recorded and the process is terminated. That is, the log information of the initial setting is not changed in this embodiment but remains in the original state.
In this embodiment, it is possible to diagnose an unconnected state of the antenna or a poor state of the DTC circuit section of the in-vehicle terminal 100 because whether or not communication connection has not been confirmed. The diagnosis result as to whether the communication state is accurate in this case may be determined according to the communication connection state with the roadside base station later.
Fig. 3b shows a state where there is a history of antenna connection, and the previous state log is recorded as an antenna connection state log (AC) and shows a state where there is no history of communication with the roadside base station (date: -0000).
In this state, when the in-vehicle terminal 100 is turned on with the start of the vehicle, the connection state of the antenna is confirmed (S210). If the antenna is connected as a result of the confirmation (S210-Y), the previous status log is confirmed. As a result of the confirmation, the previous state log is recorded as the antenna connection state log (AC) (S215-N), and the state log is not changed, so that the event log is omitted and the current state log is recorded as the antenna connection state log (AC) (S225).
In this embodiment, it is possible to diagnose the connection state of the antenna as a normal state, and since it is a state in which whether or not the communication connection has not been confirmed, the diagnosis result as to whether or not the communication state is accurate can be determined according to the communication connection state with the roadside base station later.
As still another embodiment, when the in-vehicle terminal 100 is turned on to turn on the power supply following the start of the vehicle, the connection state of the antenna is confirmed (S210). If the antenna is not connected as a result of the confirmation (S210-N), the previous status log is confirmed. Since the confirmation result is that the previous state log is recorded as the antenna connection state log (AC) (S230-N, S235-Y), the antenna non-connection event log (DC) is recorded in the event log in this case (S240). And since it is the case that the event log is changed, the antenna non-connection state log (DC) is recorded in the state log so as to correspond to the antenna non-connection event log (DC) (S245).
In this embodiment, it is possible to diagnose the antenna connection failure at the time of assembly before the vehicle is taken out of the garage or the antenna connection failure due to the operation after the vehicle is taken out of the garage, and it is also possible to diagnose the antenna connection failure due to the unstable connection state because it is a state in which whether or not the communication connection is not confirmed. The diagnosis result according to whether the communication state is accurate or not in this case may be determined according to the communication connection state with the roadside base station later.
Fig. 3c shows a state in which the connection history of the antenna exists, and the previous state log is recorded as an antenna connection state log (DC), which indicates that the antenna is connected and then disconnected again. Further, the state is a state in which there is no communication history with the roadside base station (date:. About. 0000).
In this state, when the in-vehicle terminal 100 is turned on with the start of the vehicle, the connection state of the antenna is confirmed (S210). If the antenna is connected as a result of the confirmation (S210-Y), the previous status log is confirmed. Since the confirmation result is that the previous state log is recorded as the antenna non-connection state log (DC) (S215-N), the antenna connection event log (AC) is recorded in the event log (S220) in this case. Also, since it is the case that the event log has changed, the antenna non-connection state log (AC) is recorded in the state log so as to correspond to the antenna connection event log (AC) (S225).
In this embodiment, it is possible to diagnose the antenna connection failure at the time of assembly before the vehicle is taken out of the garage, or the antenna connection failure due to the operation after the vehicle is taken out of the garage, and since it is a state in which whether or not the communication connection is made is not yet confirmed, it is also possible to diagnose the antenna connection failure due to the unstable connection state. The diagnosis result as to whether the communication state is accurate in this case may be determined according to the communication connection state with the roadside base station later.
As still another embodiment, when the in-vehicle terminal 100 is turned on to turn on the power supply following the start of the vehicle, the connection state of the antenna is confirmed (S210). If the antenna is not connected as a result of the confirmation (S210-N), the previous status log is confirmed. Since the confirmation result is that the previous state log is recorded as the antenna unconnected state log (DC) (S230-N, S235-N), and since the event log is not changed, the recording of the event log is omitted and the current state log is recorded as the antenna unconnected state log (DC) (S245).
In this embodiment, it is possible to diagnose the antenna connection failure at the time of assembly before the vehicle is taken out of the garage or the antenna connection failure due to the operation after the vehicle is taken out of the garage. The diagnosis result as to whether the communication state is accurate in this case may be determined according to the communication connection state with the roadside base station later.
Fig. 4 is a flowchart showing the contents of storing an initial communication time log according to a communication state after connecting an antenna in one embodiment of the present invention. Fig. 5a to 5d are diagrams for explaining various embodiments of generating log information according to a communication state after connecting an antenna.
In one embodiment of the present invention, when the power supply of the in-vehicle terminal 100 is turned on, the communication state with the roadside base station is confirmed, and the log information of the antenna is generated based on the communication state confirmation result.
Here, in an embodiment of the present invention, in a case where the communication state confirmation result is a state in which communication is possible, a previous state log of the antenna is confirmed, and whether to record an event log is determined based on whether the previous state log of the antenna is the same as a current state. The initial communication time log may then be recorded based on whether the initial communication time log of the status log included in the antenna is recorded.
Also, in the case where the communication state confirmation result is the state in which communication is impossible, whether to record the event log may be determined based on whether the previous state log of the antenna is the same as the current state, and the initial communication time log may be recorded based on whether the initial communication time log of the state log included in the antenna is recorded.
Fig. 5a shows a state where there is a connection history of the antenna, and the previous state log is recorded as an antenna connection state log (AC), and there is no communication history with the roadside base station (date: 0000).
In this case, when the vehicle is started to be in an on state and the vehicle-mounted terminal is powered on and then communication with the roadside base station is completed (S310-Y), the previous log state is confirmed, and since the previous state log is the same as the current state, the recording of the event log is omitted, and the communication completion time is a state in which the communication completion time information is present when the communication is completed (S320-Y), and therefore the communication completion time is recorded as the initial communication time log (date: -1234) (S330).
In the case of this embodiment, the communication is normally completed, and therefore the connection state of the antenna can be diagnosed as a normal state.
As another example, when the start of the vehicle is turned on, and the vehicle-mounted terminal fails to perform communication with the roadside base station after power-on (S310-N), the previous log state is confirmed, and the current state is a state in which communication is not possible unlike the previous state log, and therefore an event log (DC) is recorded in the event log, with the antenna not connected. And since it is the case that the event log is changed, the antenna non-connection state log (DC) is recorded in the state log so as to correspond to the antenna non-connection event log (DC). Further, since the communication with the roadside base station is disabled (S320-N), the recording of the first communication time log is omitted.
In this embodiment, it is possible to diagnose the poor connection of the antenna at the time of assembly before the vehicle is taken out of the garage or the poor connection of the antenna due to the operation after the vehicle is taken out of the garage, or it is also possible to diagnose the poor connection of the antenna due to the unstable connection state.
Fig. 5b shows a state in which the connection history of the antenna is present, and the previous state log is recorded as an antenna connection state log (DC), which indicates that the antenna is connected and then disconnected again. Further, the state is a state in which there is no communication history with the roadside base station (date:. About. 0000).
In this case, when the vehicle is started in the on state and the vehicle-mounted terminal completes communication with the roadside base station after the power supply is turned on (S310-Y), the previous log state is confirmed, and since the communication with the current base station is completed unlike the previous state log, an antenna connection event log (AC) is recorded in the event log. And since it is the case that the event log is changed, the antenna connection state log (AC) is recorded in the state log so as to correspond to the antenna connection event log (AC). When the communication with the roadside base station is completed, the communication completion time information is present (S320-Y), and therefore the communication completion time is recorded as the first communication time log (date: 1234) (S330).
In the case of this embodiment, since there is a state where the antenna is not connected once, it is possible to diagnose a connection failure of the antenna due to an operation after the vehicle is taken out of the garage, or it is also possible to diagnose a connection failure of the antenna due to an unstable connection state.
As another embodiment, when the vehicle is started to be in an on state, and after the vehicle-mounted terminal is powered on, communication with the road side base station is tried but the communication fails (S310-N), the previous log state is confirmed, and the record of the event log is omitted because the previous state log is the same as the current state, and the record of the initial communication time log is omitted because the communication with the road side base station is disabled (S320-N).
In this embodiment, it is possible to diagnose the poor connection of the antenna at the time of assembly before the vehicle is taken out of the garage or the poor connection of the antenna due to the operation after the vehicle is taken out of the garage, or it is also possible to diagnose the poor connection of the antenna due to the unstable connection state.
Fig. 5c shows a state in which there is a history of antenna connection, and the previous state log is recorded as an antenna connection state log (AC), and there is a history of communication with the roadside base station (date: -1234).
In this case, when the start of the vehicle is in an on state, and after the vehicle-mounted terminal is powered on, communication with the roadside base station is completed (S310-Y), the previous log state is confirmed, and since the previous state log is the same as the current state, the recording of the event log is omitted, and since the communication completion time is a state in which the initial communication completion time information is present (S320-N), the additional recording of the initial communication time log is omitted.
In the case of this embodiment, since the communication is normally completed, it is possible to diagnose that the connection state of the antenna is a normal state.
As another example, when the start of the vehicle is turned on, and the vehicle-mounted terminal attempts communication with the roadside base station after turning on the power source but fails (S310-N), the previous log state is confirmed, and the current state is a state in which communication cannot be performed unlike the previous state log, and therefore, an event log (DC) is recorded in the event log in which the antenna is not connected. And since it is the case that the event log is changed, the antenna unconnected state log (DC) is recorded in the state log so as to correspond to the antenna unconnected event log (DC). When the first communication time log is recorded (step (S250-Y) in fig. 2), the state change parameter value (ss) included in the first communication time log is recorded as a parameter value (DC) corresponding to the antenna disconnection (step (S255) in fig. 2).
In this embodiment, it is possible to diagnose a poor antenna connection caused by an operation after the vehicle is taken out of the garage, or it is also possible to diagnose a poor antenna connection caused by an unstable connection state.
Finally, fig. 5d shows a state in which there is a history of antenna connection, and the previous state log is recorded as an antenna connection state log (DC), which indicates that the antenna is connected and then disconnected again. Further, the communication history with the roadside base station is present but the communication is disabled (date: 12 DC).
In this case, when the vehicle is started to be in an on state and the vehicle-mounted terminal completes communication with the road side base station after being powered on (S310-Y), the previous log state is confirmed, and since the communication with the current base station is completed unlike the previous state log, an antenna connection event log (AC) is recorded in the event log. Since the event log is changed, the antenna connection state log (AC) is recorded in the state log so as to correspond to the antenna connection event log (AC). Since the communication completion time is in a state where the first communication completion time information is present (S320-N), additional recording of the first communication time log is omitted.
In this embodiment, it is possible to diagnose the poor connection of the antenna due to the operation after the vehicle is out of the garage, or it is also possible to diagnose the poor connection of the antenna due to the unstable connection state.
As another embodiment, when the start of the vehicle is turned on, and the vehicle-mounted terminal tries to communicate with the road side base station after being powered on but fails (S310-N), the previous log state is confirmed, and since the previous state log is the same as the current state, the recording of the event log is omitted, and since the vehicle-mounted terminal is in a state where communication with the road side base station is impossible and the initial communication time log is already recorded, the additional recording is omitted.
In this embodiment, it is also possible to diagnose a poor antenna connection caused by an operation after the vehicle is taken out of the garage, or it is also possible to diagnose a poor antenna connection caused by an unstable connection state.
Table 3 below collates the diagnosis results corresponding to the log information in the foregoing respective embodiments.
[ Table 3]
Figure BDA0003313416360000131
Figure BDA0003313416360000141
In addition, in the above description, the steps (S110 to S330) may be further divided into additional steps or combined into fewer steps according to an embodiment of the present invention. Further, some steps may be omitted as necessary, and the order between the steps may be changed. Also, the contents of fig. 1 to 5d may be applied to the contents of the in-vehicle terminal 100 of fig. 6, even if other contents are omitted.
Fig. 6 is a block diagram of the in-vehicle terminal 100 according to one embodiment of the present invention.
The in-vehicle terminal 100 according to one embodiment of the present invention includes a communication section 110, a determination section 120, and a control section 130.
The communication unit 110 transmits and receives data to and from a roadside base station based on a predetermined antenna.
The determination unit 120 determines the connection state of the antenna when the in-vehicle terminal 100 is in the power on state.
The control unit 130 generates log information of the antenna based on the connection state of the antenna, and diagnoses the connection state of the antenna based on the log information. Here, the log information of the antenna includes a status log of the antenna and an event log in which a history of change of the status log is recorded.
In one embodiment of the present invention described above, the antenna connection diagnosis method of the in-vehicle terminal 100 for the automatic toll collection system may be implemented as a program (or an application program) and stored in a medium to operate in conjunction with a computer as hardware.
The above program may include a Code (Code) encoded in a computer language such as C, C + +, JAVA, ruby, machine language, etc., which can be read by a processor (CPU) of the computer through a device interface of the computer, so that the computer reads the program and executes the method implemented as the program. Such Code may include Code defining functionality (Functional Code) related to functions or the like that perform functions required by the method, and may include execution step-related control Code required by a processor of the computer to perform the functions in predetermined steps. And, such code may further include memory access-related code regarding where in the internal or external memory of the computer (address number) additional information or media required when the processor of the computer performs the functions should be accessed. Also, in the case where the processor of the computer needs to communicate with any other computer or server etc. at a Remote location (Remote) when performing the functions, the code may further include communication-related code regarding how to communicate with any other computer or server etc. at a Remote location using the communication module of the computer, and what information or media etc. should be received when communicating.
The storage medium means a medium that stores data semi-permanently and can be read by a device, and not a medium that stores data for a short time such as a register, a buffer, a memory, or the like. Specifically, the storage medium includes, but is not limited to, ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like. That is, the program may be stored on various storage media on various servers that the computer can access or various storage media on the computer of the user. Also, the medium may be dispersed in computer systems connected through a network, storing the computer readable code in a dispersed manner.
The above description of the present invention is for illustrative purposes, and those skilled in the art will appreciate that the present invention may be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. Accordingly, it is to be understood that the above-described embodiments are intended to be illustrative in all respects, rather than restrictive. For example, each component described as a single mode may be implemented as dispersed, and similarly, components described as dispersed may be implemented as combined.
The scope of the present invention is indicated by the contents of the technical solutions, rather than the specific descriptions above, and it should be construed that the meaning and scope of the technical solutions and all modifications and variations derived from the equivalent concepts thereof are included in the scope of the present invention.

Claims (14)

1. An antenna connection diagnosis method for a vehicle-mounted terminal of an automatic toll collection system, comprising:
confirming an antenna connection state when the vehicle-mounted terminal is in a power-on state;
a step of generating log information of the antenna based on the connection state of the antenna; and
a step of diagnosing a connection state of the antenna based on the log information,
the log information of the antenna includes a status log of the antenna and an event log for recording an alteration history of the status log.
2. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 1, wherein the step of generating the log information of the antenna based on the connection state of the antenna comprises:
confirming a previous status log of the antenna;
recording an event log as an antenna connection event log or an antenna disconnection event log based on a connection state confirmation result of the antenna when the previous state log of the antenna is not identical to the current state; and
and recording the status log as an antenna connection status log or an antenna disconnection status log based on the result of confirming the connection status of the antenna.
3. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 2, wherein:
the step of generating the log information of the antenna based on the connection state of the antenna when the result of confirming the connection state of the antenna is connected comprises:
a step of recording an antenna connection event log in the event log when a previous state log of the antenna is set as an initial value; and
a step of recording an antenna connection status log in the status log so as to correspond to the antenna connection event log,
in the step of diagnosing the antenna connection state based on the state log and the event log,
and diagnosing that the cable of the antenna is in a normal state or a DTC circuit part of the vehicle-mounted terminal is in a bad state.
4. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 2, wherein:
the step of generating the log information of the antenna based on the connection state of the antenna when the result of confirming the connection state of the antenna is that the antenna is not connected includes:
omitting the step of recording the status log and the event log when the previous status log of the antenna is set to an initial value,
in the step of diagnosing the antenna connection state based on the state log and the event log,
the diagnosis is that the antenna is not connected or the DTC circuit part of the vehicle-mounted terminal is in a bad state when the vehicle is out of the garage.
5. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 2, wherein:
the step of generating the log information of the antenna based on the connection state of the antenna when the result of confirming the connection state of the antenna is that the antenna is not connected includes:
recording an event log not connected to the antenna in the event log under the condition that the previous state log of the antenna is recorded as an antenna connection state log; and
a step of recording an antenna unconnected state log in the state log so as to correspond to the antenna unconnected event log,
in the step of diagnosing the antenna connection state based on the state log and the event log,
the method diagnoses at least one of poor antenna connection before vehicle is taken out of the garage, poor antenna connection caused by vehicle operation after the vehicle is taken out of the garage, and poor antenna connection caused by unstable connection state.
6. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 2, wherein:
the step of generating the log information of the antenna based on the connection state of the antenna when the result of confirming the connection state of the antenna is connected comprises:
a step of recording an antenna connection event log in an event log when a previous state log of the antenna is set as an antenna unconnected event log; and
a step of recording an antenna connection status log in the status log so as to correspond to the antenna connection event log,
in the step of diagnosing the antenna connection state based on the state log and the event log,
the method diagnoses at least one of poor antenna connection before vehicle is taken out of the garage, poor antenna connection caused by vehicle operation after the vehicle is taken out of the garage, and poor antenna connection caused by unstable connection state.
7. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 1, further comprising:
confirming a communication state between the vehicle-mounted terminal and a road side base station; and
and generating log information of the antenna based on the communication state confirmation result.
8. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 7, wherein:
when the communication state is confirmed to be in a communicable state, the step of generating log information of the antenna based on the communication state confirmation result includes:
confirming a previous status log of the antenna;
a step of determining whether to record an event log based on whether a previous state log of the antenna is identical to a current state; and
and recording the initial communication time log based on whether the initial communication time log contained in the antenna state log is recorded or not.
9. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 8, wherein:
in the step of diagnosing the connection state of the antenna based on the log information,
when the event log is recorded and the initial communication time log is recorded or is recorded again, at least one of poor antenna connection due to operation after the vehicle is taken out of the warehouse and poor antenna connection due to unstable connection state is diagnosed.
10. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 7, wherein:
the step of generating the log information of the antenna based on the communication state confirmation result when the communication state confirmation result indicates the communication disabled state includes:
a step of determining whether to record an event log based on whether a previous state log of the antenna is identical to a current state; and
and recording the initial communication time log based on whether the initial communication time log contained in the antenna state log is recorded or not.
11. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 10, wherein:
in the step of recording the initial communication time log based on the record of the initial communication time log contained in the state log of the antenna,
when the initial communication time log is recorded, a state change parameter included in the initial communication time log is recorded as a parameter corresponding to the antenna disconnection.
12. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 11, wherein:
in the step of diagnosing the connection state of the antenna based on the log information,
when the initial communication time log is recorded or recorded again, at least one of the antenna connection failure due to the operation after the vehicle is taken out of the garage and the antenna connection failure due to the unstable connection state is diagnosed.
13. The antenna connection diagnosis method for the in-vehicle terminal of the automatic toll collection system according to claim 11, wherein:
in the step of diagnosing the connection state of the antenna based on the log information,
when the initial communication time log is recorded as an initial value, at least one of an antenna connection failure at the time of assembly before the vehicle is taken out of the garage, an antenna connection failure due to an operation after the vehicle is taken out of the garage, and an antenna connection failure due to an unstable connection state is diagnosed.
14. An in-vehicle terminal for an automatic toll collection system capable of diagnosing antenna connection, comprising:
a communication unit for transmitting and receiving data to and from a roadside base station based on a predetermined antenna;
a determination unit that determines a connection state of the antenna when the vehicle-mounted terminal is in a power-on state; and
a control unit that generates log information of the antenna based on the connection state of the antenna, diagnoses the connection state of the antenna based on the log information,
the log information of the antenna comprises a state log of the antenna and an event log for recording the change history of the state log.
CN202111223358.7A 2021-04-19 2021-10-20 Vehicle-mounted terminal and antenna connection diagnosis method thereof Pending CN115223270A (en)

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