CN111292431A - Vehicle-mounted unit operation method and vehicle-mounted unit - Google Patents
Vehicle-mounted unit operation method and vehicle-mounted unit Download PDFInfo
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- CN111292431A CN111292431A CN201811490293.0A CN201811490293A CN111292431A CN 111292431 A CN111292431 A CN 111292431A CN 201811490293 A CN201811490293 A CN 201811490293A CN 111292431 A CN111292431 A CN 111292431A
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- 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
Abstract
The application discloses a vehicle-mounted unit operation method and a vehicle-mounted unit. The on-board unit includes a control module and a CPU card module coupled to each other, the CPU card module includes a dual-interface card chip having a memory and an antenna coupled to the dual-interface card chip, the memory includes a free read-write area, the control module is configured to: detecting whether the free read-write area is written with an operation instruction or not; and when the free reading and writing area is detected to be written with the operation instruction, controlling the vehicle-mounted unit to execute corresponding operation based on the operation instruction. The on-board unit operation method is used for operating the on-board unit.
Description
Technical Field
The application relates to the field of electronic toll collection systems without stopping, in particular to an operation method of a vehicle-mounted unit and the vehicle-mounted unit.
Background
The existing electronic toll collection system uses a large amount of double-piece type vehicle-mounted units. The double-piece vehicle-mounted unit adopts an external user card mode, namely the user card and the vehicle-mounted unit can be separated from each other. When the information of the user card needs to be read, the user card can be pulled out and put into the card reading device for reading. When the vehicle passes through the ETC lane, the Road Side Unit (RSU) may also read information about the on-board Unit.
However, the contact surface reed of the dual-interface user card is easily oxidized to cause poor contact, and the read-write operation has a certain failure probability, so that the call sound of the single-chip vehicle-mounted unit is higher and higher. The single-chip type vehicle-mounted unit does not use a pluggable user card any more, but the user card is arranged in the vehicle-mounted unit, so that compared with the traditional double-chip type vehicle-mounted unit, the single-chip type vehicle-mounted unit is simpler in structure, higher in reliability and lower in cost.
Similar to the two-piece on-board unit, when the vehicle equipped with the one-piece on-board unit passes through the ETC lane, the information on the one-piece on-board unit can be read by the RSU. However, since the one-chip on-board unit user card is built in the on-board unit, when the user card passes through an artificial Toll Collection (MTC) lane, the MTC lane is not installed with an RSU, and thus, related information of the one-chip on-board unit cannot be read. In addition, when the conventional two-piece unit is developed and debugged or configured on-board, the debugging is generally performed by using a test card, a bluetooth module connection, a wired connection, or the like. For the mode of using the test card, different test cards are used according to different test modes, which is very inconvenient; the way of using the bluetooth module leads to increased cost due to the need to use an additional bluetooth module; the wired connection also requires special debugging or configuration equipment, which also results in increased cost.
Therefore, there is a need for improvements in the prior art.
Disclosure of Invention
An object of the present application is to provide an in-vehicle unit operating method that can operate an in-vehicle unit without increasing the hardware cost of the in-vehicle unit.
In one aspect of the present application, there is provided an in-vehicle unit operating method, the in-vehicle unit including a control module and a CPU card module coupled to each other, the CPU card module including a dual interface card chip having a memory and an antenna coupled to the dual interface card chip, the memory including a free read/write area, the method including: the control module detects whether the free read-write area is written with an operation instruction; and when the fact that the free reading and writing area is written with an operation instruction is detected, the control module controls the vehicle-mounted unit to execute corresponding operation based on the operation instruction.
Furthermore, the antenna is an NFC antenna, and the card reading device can communicate with the dual-interface card chip through the NFC antenna to write the operation instruction.
In some embodiments, the on-board unit is a monolithic on-board unit.
Further, before the step of detecting, by the control module, whether the free read-write area is written in the operation instruction, the method further includes: and the card reading equipment communicates with the double-interface card chip through a non-contact read-write technology to write the operation instruction into the free read-write area.
Further, the operation instruction is an information reading instruction, and the control module writes the relevant information of the vehicle-mounted unit into the free reading and writing area based on the information reading instruction.
Further, before the step of communicating with the dual-interface card chip through a non-contact read-write technology by a card reading device to write an information reading instruction into the free read-write area, the method further includes: and the card reading equipment is communicated with the double-interface card chip through a non-contact read-write technology so as to read the original information of the free read-write area.
Further, after the step of the control module writing the information related to the on-board unit into the free read-write area based on the information reading instruction, the method further includes: and the card reading equipment communicates with the double-interface card chip through a non-contact read-write technology so as to read the relevant information from the free read-write area.
Further, before the step of detecting, by the control module, whether the free read-write area is written in the operation instruction, the method further includes: the control module waits for an interrupt from the CPU card module, wherein the interrupt is triggered when the antenna senses that a radio frequency signal is out of field.
Further, after the step of the control module controlling the on-board unit to perform the corresponding operation based on the operation instruction, the method further comprises: the control module generates a visual and/or audible signal prompting the on-board unit that the corresponding operation has been performed.
In another aspect of the present application, there is provided an in-vehicle unit including a control module and a CPU card module coupled to each other, the CPU card module including a dual interface card chip having a memory and an antenna coupled to the dual interface card chip, the memory including a free read-write area, the control module being configured to: detecting whether the free read-write area is written with an operation instruction or not; and when the free read-write area is detected to be written with an operation instruction, executing corresponding operation based on the operation instruction.
The foregoing is a summary of the application that may be simplified, generalized, and details omitted, and thus it should be understood by those skilled in the art that this section is illustrative only and is not intended to limit the scope of the application in any way. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
Drawings
The above-described and other features of the present disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. It is appreciated that these drawings depict only several embodiments of the disclosure and are therefore not to be considered limiting of its scope. The present disclosure will be described more clearly and in detail by using the accompanying drawings.
FIG. 1 illustrates an on-board unit 100 of the present disclosure;
FIG. 2 is a schematic diagram showing a CPU card file system architecture used by the ETC system;
FIG. 3 illustrates an on-board unit operating method 300 according to the present disclosure;
FIG. 4 illustrates an on-board unit information reading method 400 according to the present disclosure.
Detailed Description
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like reference numerals generally refer to like parts throughout the various views unless the context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not intended to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter of the present application. It will be understood that aspects of the present disclosure, as generally described in the present disclosure and illustrated in the figures herein, may be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which form part of the present disclosure.
The invention provides an information operation method for a vehicle-mounted unit, which is characterized in that a non-contact read-write technology is adopted to communicate with the vehicle-mounted unit under the condition of not increasing hardware cost, so that the operation of the vehicle-mounted unit is realized, and the user experience is improved. To facilitate understanding of the present disclosure, an in-vehicle unit to which the present disclosure is applied will be described below by taking the in-vehicle unit 100 shown in fig. 1 as an example.
As shown in fig. 1, the on-board unit 100 includes a control module 10 and a CPU card module 20 coupled to each other, the CPU card module 20 includes a dual interface card chip 21 and an antenna 22, the dual interface card chip 21 includes a memory 211 (not shown in the figure), and the memory 211 is used for storing a CPU card file system. The dual interface card chip 21 includes a contact terminal 21a and a non-contact terminal 21b, the contact terminal 21a is coupled to the control module 10, and the non-contact terminal 21b is coupled to the antenna 22. The control module 10 can communicate with the dual interface card chip 21 through the contact terminals 21a, and a card reading device (not shown) can communicate with the dual interface card chip 21 through the antenna 22 by using a non-contact read-write technology, i.e. send or receive data to the dual interface card chip 21. The contactless read/write technology may be various wireless Communication technologies supported by the dual-interface card chip 21, such as Radio Frequency Identification (RFID) technology, Near Field Communication (NFC) technology, and the like, and the antenna 22 is an antenna supporting the corresponding contactless read/write technology.
The antenna 22 is a device for converting radio frequency signals and electrical signals, and can convert the radio frequency signals of the frequency band supported by the antenna into electrical signals, and also can convert the electrical signals into electromagnetic waves in a specific frequency band. The dual-interface card chip 21 further includes a power module, and when the card reading device accesses the dual-interface card chip 21 through the non-contact technology, the power module may filter an electrical signal converted and output by the antenna 22 from a radio frequency signal of the card reading device to supply power to the CPU card module 20. When the power-on state of the CPU card module 20 changes, an interrupt of the control module 10 is triggered, and the control module 10 may perform a corresponding operation according to the interrupt signal. For example, when the antenna 22 senses that the rf signal is off-field (i.e., the rf signal goes from "present" to "absent"), the CPU card module 20 is powered down, thereby triggering an interrupt to the control module 10.
Fig. 2 shows a schematic diagram of a CPU card file system structure used by the ETC system, and the CPU card module 20 of the present disclosure may adopt the file system structure shown in fig. 2, for example, but not necessarily, whose file system is stored in the memory 211. In the file system, a main file "MF" needs to be established by an authorized device by using a master key, key files under MF and DF01 prohibit external devices from reading, and other files can be freely read, but are prohibited from rewriting or need to be rewritten by using a key, and some files can be freely read and written. In the present disclosure, a memory area that can be freely read and written in the CPU card file system is referred to as a free read/write area. Details of the CPU card file system can be found in relevant standard files of the ETC system, such as "national highway electronic toll collection networking user card, ESAM file structure and data definition".
According to the ETC system standard, the 0009 file (namely the reserved file 6) under the DF01 directory in the CPU card file system is a file which can be read and written freely, and the file is skillfully used as a medium for communication between the card reading device and the vehicle-mounted unit, so that the operation of the vehicle-mounted unit is realized. In the present disclosure, an operation to the on-board unit means that the external device sends an operation instruction to the on-board unit, and the control module of the on-board unit implements a process of a certain behavior based on the operation instruction. These activities include configuring parameters of the on-board unit (e.g., configuring the transmit power of the on-board unit, turning off/on DSRC communications, etc.), upgrading some or all of the codes of the on-board unit, controlling the on-board unit to transmit certain signals (e.g., controlling the on-board unit to transmit single frequency test signals), reading information about the on-board unit (e.g., status information, transaction information, version information, etc.), and so forth. It is noted that, in addition to the 0009 file, other free read and write areas in the memory 211 may also achieve the foregoing objectives.
It should be noted that the on-board unit shown in fig. 1 may be a two-piece on-board unit in which the CPU card and the control module are separable, or may be a single-piece on-board unit in which the CPU card and the control module are not separable.
Fig. 3 shows an on-board unit operation method 300 according to the present disclosure, specifically including the following steps S301 to S303:
in step S301, the control module detects whether the free read/write area is written with an operation command.
The operation instruction includes an operation code and an operation parameter. The operation code is a predefined binary bit code sequence, and different code words indicate that different operations are performed. The operation parameter is a parameter required for executing a corresponding operation, and the length of the operation parameter may be different according to operation instructions. For operations that do not require parameters, the operating parameters may be null. For example, when the operation instruction is to configure the transmission power of the on-board unit, the operation parameter may be a power value; when the operation instruction is to read the activation state of the on-board unit, the operation parameter may be null. The operating instructions are written into the free read-write area of the memory 211 by the card reading device by means of contactless read-write technology. The card reading device may be a device dedicated to reading and writing a CPU card of the vehicle-mounted unit, or may be a device such as an intelligent terminal or a mobile phone supporting a non-contact reading and writing technology, for example, an NFC technology.
The control module 10 can continuously detect whether the free read/write area of the memory 211 is written with the operation command in an inquiry manner. Preferably, the control module 10 may also adopt an interrupt mode, that is, after receiving an interrupt triggered by the power down of the CPU card module 20, it detects whether the free read/write area of the memory 211 is written with the operation instruction. The workload of the control module 10 can be reduced by the interrupt mode, and the power consumption of the on-board unit can be reduced.
In step S303, when it is detected that the free read/write area is written with the operation instruction, the in-vehicle unit is controlled to perform the corresponding operation based on the operation instruction.
The control module decodes the operation instruction and then controls the vehicle-mounted unit to execute corresponding operation based on the decoding result. For example, when the operation instruction is an information reading instruction, the control module decodes the operation instruction to know what information the card reading device needs to obtain, and writes the related information into the free reading and writing area according to the decoding result for the card reading device to read.
In some embodiments, to facilitate the user to know in time whether the relevant operation is completed, the control module 10 may generate a visual (e.g., an indicator light is on) and/or audible signal (e.g., a "beep" sound) to prompt the user after the corresponding operation is to be performed.
From the steps, the free read-write area of the memory in the dual-interface card chip is used as a channel for communication between the card reading device and the vehicle-mounted unit, so that the problem of operating the vehicle-mounted unit is solved without additionally increasing hardware cost.
In some embodiments, the operation command in the method 300 is an information reading command, so as to obtain an onboard unit information reading method 400 of the present disclosure, and the method 400 can be used for onboard unit information reading. In the present disclosure, the on-board unit information may be static information of the on-board unit or dynamic information generated during operation. The static information of the on-board unit refers to information that does not change during the operation of the on-board unit, such as the version number of the on-board unit, factory information, and the like. The dynamic information generated during the operation of the on-board unit refers to information that may change during the operation of the on-board unit, such as status information, transaction information, and the like of the on-board unit.
As shown in fig. 4, the method 400 includes the steps of:
in step S401, the control module detects whether the free read/write area is written with an information read command.
Wherein, the information instruction is written into the free read-write area of the memory 211 by the card reading device through the non-contact read-write technology.
In step S403, when it is detected that the free read/write area is written with the information reading instruction, the information related to the in-vehicle unit is written in the free read/write area based on the information reading instruction.
In step S405, the card reading device communicates with the dual interface card through a contactless read/write technology to read out relevant information from the free read/write area.
After writing the information reading instruction into the free reading and writing area, the card reading device waits for a certain time, which may be a fixed length or different according to the different information reading instructions, mainly considering that the time for the control module 10 to obtain the information may be different due to different contents of the information to be read.
If the waiting time is too short or the control device is accessing the CPU card through the contact terminal 21a for other reasons, at this time, the card reading device may not access the free reading and writing area, and the card reading device may wait for a certain time again to re-read the free reading and writing area until the data is read.
It should be noted that, in order to enhance the error correction capability of information reading, the control module 10 may add the check information to the acquired information or perform error correction coding and then write the information into the free read/write area, and therefore, the related information of the present disclosure includes the information directly acquired by the control module 10 from the vehicle-mounted unit, and the information obtained by adding the check information on the basis of the aforementioned information or performing error correction coding. The check information may be parity bits, Cyclic Redundancy Check (CRC) bits, and the like. The error correction coding may be block code, convolutional code, etc. Whether the information written into the free read/write area by the control module 10 includes the check bits or the error correction coded information may be predefined. In the case that various error correction codes are available for selection, the card reading device can set the error correction coding parameters through the information reading instruction.
In some embodiments, in order to recover the original information in the free read/write area, before step S401, that is, before the card reading device writes the information reading command into the free read/write area, the card reading device may communicate with the dual-interface card chip 21 through a non-contact read/write technology, and after step S405, that is, after the card reading device reads the relevant information from the free read/write area, the card reading device writes the stored original information back into the free read/write area.
The present disclosure also provides an on-board unit 500 including a control module and a CPU card module coupled to each other. Wherein the control module is configured to perform the various steps performed by the control module in method 300 or method 400.
Other variations to the disclosed embodiments can be understood and effected by those skilled in the art from a review of the specification, the disclosure, the drawings, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. In the practical application of the present application, one element may perform the functions of several technical features recited in the claims. Any reference signs in the claims shall not be construed as limiting the scope.
Claims (18)
1. A method of operating an in-vehicle unit including a control module and a CPU card module coupled to each other, the CPU card module including a dual interface card chip having a memory and an antenna coupled to the dual interface card chip, the memory including a free read and write area, the method comprising:
the control module detects whether the free read-write area is written with an operation instruction;
and when the fact that the free reading and writing area is written with an operation instruction is detected, the control module controls the vehicle-mounted unit to execute corresponding operation based on the operation instruction.
2. The method according to claim 1, wherein the antenna is an NFC antenna, and a card reading device can communicate with the dual-interface card chip through the NFC antenna to write the operation instruction.
3. The method of claim 1, wherein the on-board unit is a monolithic on-board unit.
4. The method according to claim 1, wherein before the step of the control module detecting whether the free read-write area is written to the operation instruction, the method further comprises:
and the card reading equipment communicates with the double-interface card chip through a non-contact read-write technology to write the operation instruction into the free read-write area.
5. The method according to claim 1, wherein before the step of the control module detecting whether the free read-write area is written to the operation instruction, the method further comprises:
the control module waits for an interrupt from the CPU card module, wherein the interrupt is triggered when the antenna senses that a radio frequency signal is out of field.
6. The method of claim 1, wherein after the step of the control module controlling the on-board unit to perform the respective operation based on the operation instruction, the method further comprises:
the control module generates a visual and/or audible signal prompting the on-board unit that the corresponding operation has been performed.
7. The method according to claim 1, wherein the operation instruction is an information reading instruction, and the control module writes the information related to the on-board unit into the free read-write area based on the information reading instruction.
8. The method according to claim 7, wherein before the step of the card reading device communicating with the dual interface card chip through a contactless read-write technology to write the information reading instruction to the free read-write area, the method further comprises:
the card reading equipment is communicated with the double-interface card chip through a non-contact reading and writing technology to read the original information of the free reading and writing area.
9. The method according to claim 7, wherein after the step of the control module writing the information related to the on-board unit into the free read-write area based on the information reading instruction, the method further comprises:
the card reading equipment communicates with the double-interface card chip through a non-contact read-write technology so as to read the relevant information from the free read-write area.
10. The method according to claim 9, wherein after the step of the card reading device communicating with the dual interface card chip through contactless read-write technology to read the related information from the free read-write area, the method further comprises:
the card reading equipment is communicated with the double-interface card chip through a non-contact reading and writing technology so as to write the original information into the free reading and writing area.
11. The method according to claim 7, wherein after the step of the control module writing the information related to the on-board unit into the free read-write area based on the information reading instruction, the method further comprises:
and the card reading equipment communicates with the double-interface card chip through a non-contact read-write technology so as to read the relevant information from the free read-write area.
12. The method of claim 7, wherein the related information comprises verification information.
13. The method of claim 7, wherein the related information is encoded using error correction.
14. The method of claim 13, wherein the information reading instruction comprises setting parameters of the error correction coding.
15. An in-vehicle unit comprising a control module and a CPU card module coupled to each other, the CPU card module including a dual interface card chip having a memory and an antenna coupled to the dual interface card chip, the memory including a free read and write area, the control module being configured to:
detecting whether the free read-write area is written with an operation instruction or not;
and when the fact that the free reading and writing area is written with an operation instruction is detected, controlling the vehicle-mounted unit to execute corresponding operation based on the operation instruction.
16. The on-board unit of claim 15, wherein the antenna is an NFC antenna, and a card reader device can communicate with the dual-interface card chip through the NFC antenna to write the operation command.
17. The on-board unit of claim 15, wherein the on-board unit is a monolithic on-board unit.
18. The on-board unit of claim 15, wherein the control module is further configured to:
before the step of detecting whether the free read-write area is written with an operation instruction, waiting for interruption from a CPU card module, wherein the interruption is triggered when the antenna senses that a radio frequency signal is out of field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490293.0A CN111292431A (en) | 2018-12-06 | 2018-12-06 | Vehicle-mounted unit operation method and vehicle-mounted unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490293.0A CN111292431A (en) | 2018-12-06 | 2018-12-06 | Vehicle-mounted unit operation method and vehicle-mounted unit |
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| CN111292431A true CN111292431A (en) | 2020-06-16 |
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| CN201811490293.0A Pending CN111292431A (en) | 2018-12-06 | 2018-12-06 | Vehicle-mounted unit operation method and vehicle-mounted unit |
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