JP6368277B2 - In-vehicle communication infrastructure equipment - Google Patents

Description

  The present invention relates to an in-vehicle communication infrastructure device that is mounted on a vehicle such as an automobile and used for communication with other vehicles, roadside units (RSUs), and the like.

  Inter-vehicle communication and road-to-vehicle communication (C2X) have been proposed and partially put into practical use. By using a communication system installed in an automobile, information from a communication device installed in another vehicle or a communication device (roadside machine) installed on a road (for example, a communication device connected to a signal) Appropriate control based on the situation is performed.

  A block diagram of a conventional communication system is shown in FIG. The application 2 gives a command to the vehicle-mounted communication infrastructure device 4 to transmit information such as the vehicle speed and the steering angle of the steering wheel to other vehicles and roadside devices. Upon receiving this command, the in-vehicle communication infrastructure device 4 acquires information such as the vehicle speed from the sensor, processes this information, and compiles it as data. Further, the in-vehicle communication infrastructure 4 uses the data processed in this way as a predetermined communication device (WiFi communication device 6 (for example, according to the 802.11a standard)) or V2X communication device 8 (for example, 802.11p). This information is transmitted according to the standard)). Note that the in-vehicle communication infrastructure device 4 is built in advance so as to process data so as to conform to the standard of the communication method according to which communication method is used.

  As described above, the company's information can be communicated to the outside.

JP 2006-344241

  However, in the conventional technology as described above, the program for the in-vehicle communication infrastructure device has to be prepared for each method of performing communication with the outside, which is complicated. That is, the in-vehicle communication infrastructure device program lacked expandability.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses an apparatus that enhances expandability by switching a driver for graphic display. If this idea is applied to this case, the communication device 6 and the communication device 8 are switched and used.

  However, in communication systems, data standards differ from system to system, and the data to be transmitted must also conform to the standard of the system.

  An object of the present invention is to solve the above-described problems and to provide a detailed communication infrastructure 4 that does not depend on a communication system.

  Several independently applicable features of the invention are listed.

(1) (2) An in-vehicle communication infrastructure apparatus according to the present invention is an in-vehicle communication infrastructure apparatus that receives a command from an application program and communicates with a partner outside the vehicle, and the command from the application program In response to this, data processing means that processes the data, and data normalization that receives the processing data from the data processing means and normalizes the processing data so that it matches the communication standard of the communication device used for communication outside the vehicle A plurality of processed data transmission means having different communication standards for transmitting processed data from the data processing means to the data standardization means or a counterpart outside the vehicle, and from the data normalization means to the communication device Which of the plurality of standardized data transmission means for transmitting standardized data different communication standards and the processed data transmission means to use A processing data transmission setting unit in which processing data is transmitted to the data normalization unit or the other party outside the vehicle, and which communication unit is used for the standardization data transmission unit are set. And a standardized data transmission setting unit.

  A plurality of communication means are provided between the data processing means and the data normalization means, and a plurality of communication means are also provided between the data normalization means and the communication device. Further, these communication means can be selected according to the setting contents of the setting unit. Therefore, it is possible to freely select a transmission protocol or the like simply by changing the setting contents of the setting unit.

(3) The in-vehicle communication infrastructure device according to the present invention is characterized in that the processing data transmission setting unit sets both the data normalization unit and a communication device used for communication between the outside as the processing data transmission destination. .

  Therefore, it is easy to switch to transmitting data through many routes.

(4) The in-vehicle communication infrastructure device according to the present invention is characterized in that the processing data transmission setting unit and the standardized data transmission setting unit are realized by a setting file.

  Therefore, setting is easy.

  In the embodiment, “data processing means” corresponds to step S3.

  In the embodiment, “data normalization means” corresponds to step S12.

  In the embodiment, the “processing data transmission unit” corresponds to the first communication program 64, the second communication program 66,.

  In the embodiment, the “standardized data transmission unit” corresponds to the eleventh communication program 84, the twelfth communication program 86,.

  The “processing data transmission setting unit” corresponds to the setting file 68 in the embodiment.

  The “standardized data transmission setting unit” corresponds to the setting file 88 in the embodiment.

  The “program” is a concept that includes not only a program that can be directly executed by the CPU, but also a source format program, a compressed program, an encrypted program, and the like.

It is a functional block diagram of the vehicle-mounted communication infrastructure device by one Embodiment of this invention. This is a hardware configuration when the data processing means 12 is configured using a CPU. This is a hardware configuration when the data normalization means 20 is configured using a CPU. 5 is a flowchart of a data processing program 62. It is an example of a setting file 68. 5 is a flowchart of a data normalization program 82. It is an example of a setting file 88. It is a figure which shows the flow of data. It is a figure which shows the flow of data. It is a figure which shows the flow of data. It is a figure which shows the flow of data. It is a figure which shows the flow of data. It is a figure which shows the structure of the conventional vehicle-mounted communication infrastructure apparatus.

1. Overall Configuration FIG. 1 shows a functional block diagram of an in-vehicle communication infrastructure device 10 according to a first embodiment of the present invention.

  The in-vehicle communication infrastructure device 10 receives a command from the application program 2 to transmit data to a partner outside the vehicle. In response to this, the data processing means 12 acquires the data to be transmitted and performs processing for collecting them.

  The processed data transmission units 14 and 16 transmit data to the data normalization unit 20 or the set communication devices 6 and 8 according to the setting of the processed data transmission setting unit 26.

  The data normalization means 20 receives the processed data and normalizes the processed data so as to match the communication standard of the communication device used for communication with the outside of the vehicle.

The standardized data transmission units 22 and 24 transmit standardized data to either of the communication devices 6 and 8 according to the setting of the standardized data transmission setting unit 28. In this embodiment, two communication devices, a WiFi communication device 6 and a V2X communication device 8, are provided. These communication devices transmit data to other vehicles and roadside devices outside the vehicle.

2. Hardware Configuration FIG. 2 shows a hardware configuration when the data processing means 12 is realized using a CPU. A memory 52, a nonvolatile memory 54, and a communication circuit 56 are connected to the CPU 50. The communication circuit 54 is a circuit for communicating with the data normalization means 20, the WiFi communication device 6, and the V2X communication device 8.

  In the nonvolatile memory 54, an operating system 60, a data processing program 62, a first communication program 64, a second communication program 66,... Setting file 68, and the like are recorded. The data processing program 62, the first communication program 64, the second communication program 66,... Function in cooperation with the operating system 60.

  The first communication program 64 performs processing for communicating with the data normalization means 20 via the communication circuit 56. The second communication program 66 performs processing for communicating with the V2X communication device 8.

  FIG. 3 shows a hardware configuration when the data normalization means 20 is realized using a CPU. A memory 72, a nonvolatile memory 74, and a communication circuit 76 are connected to the CPU 70. The communication circuit 74 is a circuit for communicating with the WiFi communication device 6 and the V2X communication device 8.

  In the nonvolatile memory 74, an operating system 80, a data standardization program 82, an eleventh communication program 84, a twelfth communication program 86,... A setting file 88, and the like are recorded. The data standardization program 82, the eleventh communication program 84, the twelfth communication program 86... Function in cooperation with the operating system 80.

The eleventh communication program 84 performs processing for communicating with the WiFi communication device 6 via the communication circuit 76. The twelfth communication program 86 performs processing for communicating with the V2X communication device 8.

3. FIG. 4 shows a flowchart of the data processing program 62. The CPU 50 receives a data transmission command from the application program 2 (step S1). In response to this, the CPU 50 acquires the commanded data from the sensor (step S2). The CPU 50 is connected to a vehicle speed sensor, a snake angle sensor, and the like (not shown).

  Subsequently, the CPU 50 collects data from each sensor into a commanded format (step S3). For example, processing such as rounding the data acquired from the sensor with the commanded number of digits is performed.

  Next, the CPU 50 reads the setting file 68 and activates the communication program set here (step S4). FIG. 5 shows an example of the setting file 68.

  The row of Managing Device indicates to which device the data is transmitted. If this value is “0”, data is transmitted to the data normalization means 20. If “1”, data is transmitted to the WiFi communication device 6. If “2”, data is transmitted to the V2X communication device 8. It is also possible to specify that a plurality of communication devices are used simultaneously, such as “1, 2”.

  The Managing Protocl line indicates which communication program 64, 66... Is used for transmission. If this value is “0”, data is transmitted using the first communication program 64. If “1”, data is transmitted using a third communication program (not shown). If “2”, data is transmitted using the second communication program. It is also possible to specify that a plurality of communication programs are used simultaneously, such as “1, 2”.

  Each communication program is associated with a destination device to be transmitted. For example, the first communication program 64 is associated with the data standardization means 20, the second communication program is associated with the V2X communication device 8, and the third communication program is associated with the WiFi communication device 6. .

  In the example of FIG. 5, the processing data is shown to be transmitted to the data normalization means 20 using the first communication program 64. The CPU 50 activates the set first communication program 64 (step S4). Thus, when the first communication program 64 is activated, the CPU 50 passes the machining data to the first communication program (step S5).

  The first communication program transmits the received processed data to the data normalization means 20 via the communication circuit 56.

  FIG. 6 shows a flowchart of the data normalization program 82. The CPU 70 receives the processing data from the CPU 50 via the communication circuit 76 (step S11).

  Next, the CPU 70 reads the setting file 88 and transforms the processed data into standardized data so as to match the protocol according to the protocol used by the communication program specified by the Managing Protocol line (step S12).

  FIG. 7 shows an example of the setting file 88. The row of Managing Device indicates to which device the data is transmitted. If this value is “1”, data is transmitted to the WiFi communication device 6. If “2”, data is transmitted to the V2X communication device 8.

  In the row of Managing Protocl, which communication program 84, 86... Is used for transmission is shown. If this value is “1”, data is transmitted using the eleventh communication program 84. If “2”, data is transmitted using the twelfth communication program 86. Each communication program is associated with a destination device to be transmitted. For example, the eleventh communication program 84 is associated with the WiFi communication device 6, and the twelfth communication program 86 is associated with the V2X communication device 8.

  In the example of FIG. 7, it is shown that standardized data is transmitted to the WiFi communication device 6 using the eleventh communication program 84. The CPU 50 activates the set first communication program 64 (step S13). Thus, when the eleventh communication program 84 is activated, the CPU 50 passes the standardized data to the eleventh communication program 84 (step S14).

  The eleventh communication program 84 transmits the received standardized data to the WiFi communication device 6 via the communication circuit 76. The WiFi communication device 6 transmits standardized data to other automobiles and roadside devices.

  As described above, data is transmitted in response to a command from the application program 2. The data flow in the above case is shown by the bold line in FIG.

  If the setting content of the standardized data transmission setting unit 28 is changed, it can be easily transmitted from the V2X communication device 8 as shown in FIG. In this case, it is not necessary to modify the data processing program 62 and the data normalization program 82.

  If a plurality of communication devices are set in the standardized data transmission setting unit 28, transmission can be performed from the plurality of communication devices 6 and 8, as shown in FIG.

  If the second processed data communication means 16 is selected by the processed data transmission setting unit 26, data can be transmitted directly from the V2X communication device 8 as shown in FIG. In this case, the communication device to be used is not set in the setting file 88 (that is, NULL is set).

  In addition, transmission may be performed from a plurality of communication devices 6 and 8 by setting as shown in FIG.

The setting files 68 and 88 are preferably configured to be rewritable from the application program 2.

4). Other
(1) In the said embodiment, the WiFi communication apparatus 6 and the V2X communication apparatus 8 are shown. However, a communication device using standards such as TCP, HTTP, and UDP may be used.

(2) In the above embodiment, the same communication device is handled regardless of the frequency band to be used. However, each frequency band to be used (5.9 GHz or 5.8 GHz in V2X) may be handled as a different device and set in the setting file.

(3) In the above embodiment, the case of transmission has been described. However, the present invention can also be applied to a case where reception is performed by the same processing.

(4) In the above embodiment, the data processing means 12 and the data normalization means 20 are realized by separate CPUs. Therefore, the data processing means 12 can be housed in the apparatus on the main body side, and the data normalization means 20 can be provided on the antenna.

  However, the data processing means 12 and the data normalization means 20 may be realized by a common CPU.

(5) In the above description, the operation is determined according to the contents of the setting files 68 and 88 that are initially set. However, the contents of the setting files 68 and 88 may be changed during actual operation. In this way, appropriate transmission can be performed according to the situation.

Claims (4)

An in-vehicle communication infrastructure device that receives a command from an application program and communicates with a partner outside the vehicle,
Data processing means for processing data in response to a command from an application program;
Data normalization means for receiving the processing data from the data processing means and normalizing the processing data so as to match the communication standard of the communication device used for communication with the outside of the vehicle;
A plurality of processed data transmission means having different communication standards for transmitting processed data from the data processing means to the data normalization means or a partner outside the vehicle;
A plurality of standardized data transmission units having different communication standards for transmitting standardized data from the data standardization unit to the communication device;
A processing data transmission setting unit in which the processing data transmission unit uses which communication unit is used, or which of the data standardization unit or the other party outside the vehicle transmits the processing data;
A standardized data transmission setting unit in which the standardized data transmission unit is set which communication unit is used;
In-vehicle communication infrastructure device with A program for realizing an in-vehicle communication infrastructure device with a computer,
Data processing means for processing data in response to a command from an application program;
Data normalization means for receiving the processing data from the data processing means and normalizing the processing data so as to match the communication standard of the communication device used for communication with the outside of the vehicle;
A plurality of processed data transmission means having different communication standards for transmitting processed data from the data processing means to the data normalization means or a partner outside the vehicle;
An in-vehicle communication infrastructure program for functioning as a plurality of standardized data transmission units having different communication standards for transmitting standardized data from the data standardization unit to the communication device,
The processed data transmission means determines which communication means to use or which of the data normalization means or the other party outside the vehicle transmits the processed data based on the setting content of the processed data transmission setting unit. ,
The in-vehicle communication infrastructure program, wherein the standardized data transmission unit determines which communication unit to use based on the setting contents of the standardized data transmission setting unit. In the apparatus of claim 1 or the program of claim 2,
The processing data transmission setting unit sets both a data standardization unit and a communication device used for communication between the outside as a processing data transmission destination. In the apparatus or program in any one of Claims 1-3,
The processing data transmission setting unit and the standardized data transmission setting unit are realized by a setting file.

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