KR20130131806A - Communication device and data communication metho using the communication device, data communication system for vehicle - Google Patents

Communication device and data communication metho using the communication device, data communication system for vehicle Download PDF

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Publication number
KR20130131806A
KR20130131806A KR1020120055654A KR20120055654A KR20130131806A KR 20130131806 A KR20130131806 A KR 20130131806A KR 1020120055654 A KR1020120055654 A KR 1020120055654A KR 20120055654 A KR20120055654 A KR 20120055654A KR 20130131806 A KR20130131806 A KR 20130131806A
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KR
South Korea
Prior art keywords
data
communication module
communication
electronic control
frame size
Prior art date
Application number
KR1020120055654A
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Korean (ko)
Inventor
최문식
Original Assignee
엘에스산전 주식회사
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Priority to KR1020120055654A priority Critical patent/KR20130131806A/en
Publication of KR20130131806A publication Critical patent/KR20130131806A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40071—Packet processing; Packet format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40267—Bus for use in transportation systems
    • H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle

Abstract

The present invention relates to a communication device for transmitting data to an electric control unit (ECU) for communicating with a controller area network (CAN) communication module, a data communication method using the same, and a data communication system for a vehicle. A communication device connectable to a plurality of electronic control units (ECUs) according to an embodiment of the present invention may include a controller area network (CAN) communication module and a wireless signal for data communication with at least one of the plurality of electronic control units (ECUs). By using the wireless communication module for receiving the first data from an external electronic device and the first data received by the wireless communication module to convert the second data that can be recognized by the CAN communication module, and converts the converted second data to the CAN Characterized in that it comprises a conversion unit for transmitting to the communication module.

Description

COMMUNICATION DEVICE AND DATA COMMUNICATION METHO USING THE COMMUNICATION DEVICE, DATA COMMUNICATION SYSTEM FOR VEHICLE}

The present invention relates to a communication device for transmitting data to an electric control unit (ECU) for communicating with a controller area network (CAN) communication module, a data communication method using the same, and a data communication system for a vehicle.

Due to the development of electronic devices, in order to improve the performance of automobiles, many rely on the control of electronic devices. In particular, a variety of sensors are used to improve the performance of the engine to generate the optimum engine efficiency, increasing the reliability of the vehicle. In addition, the development of such electronic devices is applied to not only actual engine driving but also various safety devices for driving safety of the driver or various additional devices and driving devices for driving convenience.

Such electronic devices may be controlled through a plurality of electric control units (ECUs) capable of performing different functions. In addition, such an electronic control unit requires a firmware update to improve a function according to a situation. In order to update the firmware of the electronic control unit, external data must be transmitted to the electronic control unit through a CAN (Controller Area Network) communication module communicating with the electronic control unit. However, in order to transfer the firmware update data to the CAN communication module, there is an inconvenience in that an electronic device such as a notebook in which the update data is stored is connected by wire through an OBD terminal provided in the vehicle.

An object of the present invention is to solve the above-described problems, a communication apparatus for transmitting data to an electric control unit (ECU) to communicate with a controller area network (CAN) using a radio signal, and It is to provide a data communication method and a vehicle data communication system using the same.

A communication device connectable with a plurality of electronic control units (ECUs) according to an embodiment of the present invention may include a controller area network (CAN) communication module and a wireless signal for data communication with at least one of the plurality of electronic control units (ECUs). By using the wireless communication module for receiving the first data from an external electronic device and the first data received by the wireless communication module to convert the second data that can be recognized by the CAN communication module, and converts the converted second data to the CAN Characterized in that it comprises a conversion unit for transmitting to the communication module.

The converter may convert the second data into a second data having a frame size different from the frame size of the first data.

According to an embodiment, the frame size of the second data may correspond to 8 bytes.

In one embodiment, the first transmission unit for transmitting the second data output through the changer to the CAN communication module and the second receiving unit for transmitting the first data output through the wireless communication module to the conversion unit. And the first transmitter and the second receiver are electrically connected to the converter, wherein the first receiver transmits a response message output from the CAN communication module to the converter. And a second transmitter for transmitting a response message output through the converter to the wireless communication module, wherein the first receiver is electrically connected to the CAN communication module and the second transmitter to the wireless communication module, respectively. It is done.

In a vehicular data communication system according to an embodiment of the present invention, a vehicle unit including a plurality of electronic control units (ECUs), a mobile terminal for transmitting and receiving first data through a radio signal, and a radio signal are transmitted from the mobile terminal. And a communication unit configured to receive first data, convert the received first data into second data having a different frame size from the first data, and transmit the first data to at least one of the plurality of electronic control units. .

According to an embodiment of the present disclosure, the communication unit uses a wireless signal to set a first frame size for receiving first data transmitted from the mobile terminal and a preset frame size based on the first data received through the first communication module. And a second communication module for converting the second data into at least one of the plurality of electronic control units (ECUs).

In a data communication method for transmitting data to a vehicle including a plurality of electronic control units (ECUs) according to an embodiment of the present disclosure, receiving the first data from an external electronic device through a wireless signal, Analyzing a frame size of first data, and if the analysis result indicates that the frame size of the first data is different from a preset frame size, converting the first data into second data having a preset frame size; and And transmitting the second data to at least one of the plurality of electronic control units.

The first data may be firmware update data associated with at least one of the plurality of electronic control units.

According to an embodiment, the converting may include splitting the first data to correspond to the preset frame size.

According to the present invention, by transmitting data to an electronic control unit included in a vehicle by using a wireless signal, it is possible to reduce the inconvenience of having a wired interface, such as conventionally connecting an electronic device and a vehicle with a wired cable.

In addition, the present invention can improve the compatibility with various electronic devices by converting the data received by using a wireless signal to a data format suitable for communicating with a CAN (Controller Area Network) communication module.

1 is a conceptual diagram of a vehicular data communication system according to an embodiment of the present invention.
2 is a block diagram of a communication device according to an embodiment of the present invention.
3 is a flowchart illustrating a communication method according to an embodiment of the present invention.
4 is a conceptual diagram illustrating a data conversion method according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In addition, the suffix "module" and " part "for constituent elements used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred.

Hereinafter, a communication apparatus, a data communication method using the same, and a vehicle data communication system according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a conceptual diagram of a vehicular data communication system according to an embodiment of the present invention.

First, referring to FIG. 1, a vehicle data communication system according to the present invention may include a communication device 100, a vehicle unit 200, and a mobile terminal 300.

Here, the vehicle unit 200 may include a plurality of electronic control units (or electronic control unit 210) including a microcontroller (microcontroller), respectively. The vehicle unit 200 may control electronic devices such as an engine, a fuel sensor, and various sensors provided for driving and user convenience using the plurality of electronic control units 210.

In addition, the electronic control unit 210 as described above receives data from an external electronic device, for example, the mobile terminal 300, it is possible to control the vehicle unit 200 based on the transmitted data. In addition, the electronic control unit 210 may receive firmware update data from the mobile terminal 300 or the like.

Here, the firmware means writing essential software which does not need to change data or information included in the electronic control unit 210 to a ROM or the like, and uses it as hardware. The firmware can be updated to improve the function of the electronic control unit 210, and the firmware update data related to the firmware update can be received from the mobile terminal 300 or the like.

Meanwhile, as illustrated in FIG. 1, the communication device 100 may receive data transmitted from the mobile terminal 300 and transmit the received data to the vehicle unit 200 using a wireless signal.

Here, the communication device 100 may receive data from the mobile terminal 300 by using a radio signal in a wireless communication module. The data transmitted from the mobile terminal 300 may be transmitted to an OBD terminal (not shown) provided in the vehicle unit 200. In some cases, the communication device 100 may be mounted in the vehicle unit 200.

On the other hand, when the structure of the data received from the mobile terminal 300 is a structure that cannot be immediately recognized by the vehicle unit 200, the communication device 100 can recognize the received data in the vehicle unit 200. It is possible to change the structure.

For example, when the size of the data frame that can be transmitted to the vehicle unit 200 is set in advance, the communication device 100 sets the frame size of the data received from the mobile terminal 300 in advance. After dividing by size, it is possible to transfer the divided data back to the vehicle unit 200.

That is, the communication device 100 receives first data transmitted from the mobile terminal 300 by using a radio signal, and converts the received first data into second data having a different frame size from the first data. I can convert it. In addition, the communication device 100 transmits the converted second data to at least one of the plurality of electronic control units 210 included in the vehicle unit 200.

Looking at the communication device 100 in more detail, the communication device 100 is a first communication module (or wireless communication module) for receiving the first data transmitted from the mobile terminal 300 by using a wireless signal. (Refer to FIG. 130, FIG. 3), a conversion unit 120 for converting the first data received through the first communication module 130 into second data having a preset frame size, and a plurality of electronic control units. A second communication module (or CAN communication module, 110, see FIG. 3) for transferring to at least one of 210.

Herein, a frame is a certain unit of information transmitted in data communication, and the unit may be expressed using bit, byte, or the like.

In addition, the mobile terminal 300 mobile phone, smart phone (smart phone), laptop computer (laptop computer), digital broadcasting terminal, PDA (personal digital assistants), PMP (portable multimedia player), navigation, Slate PC, Tablet PC, Ultra book, etc. may be included. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

As described above, the present invention transmits data to an electronic control unit included in a vehicle by using a wireless signal, so that it is inconvenient to provide a wired interface, such as conventionally connecting an electronic device and a vehicle by a wired cable. Can be reduced.

Hereinafter, a configuration of a communication device and a data communication method using the communication device of the above-described vehicle data communication system will be described.

First, FIG. 2 is a block diagram of a communication apparatus according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a communication method according to an embodiment of the present invention.

First, referring to FIG. 2, the communication device 100 according to an embodiment of the present invention may include a controller area network (CAN) communication module 110, a conversion unit 120, and a wireless communication module 130. . In addition, the communication device 100 may further include a first receiver 111, a first transmitter 112, a second receiver 131, and a second transmitter 132.

Here, the CAN communication module 110 is in data communication with at least one of the plurality of electronic control unit 210 included in the vehicle and the like described above, the wireless communication module 130 is an external electronic device using a wireless signal ( Or receives data from the mobile terminal 300. The conversion unit 120 converts the data received from the wireless communication module 130 into data recognizable by the CAN communication module 110 and transfers the converted data to the CAN communication module 110. .

Here, the CAN communication module 110 is connected to the OBD terminal included in the vehicle to communicate data with at least one of the plurality of electronic control unit 210 included in the vehicle, the data to the electronic control unit 210 Can be passed.

In addition, the wireless communication module 130 may include at least one wireless communication protocol. For example, the wireless communication module 130 may correspond to at least one of Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Digital Living Network Alliance (DLNA), Near Field Communication (NFC), and BT (BlueTooth). It may include a communication protocol.

The wireless communication module 130 may connect with the external electronic device 300 by using a communication protocol suitable for an electronic device to be connected among the various communication protocols. The communication device 100 may determine a communication protocol connectable to the electronic device by analyzing a wireless signal of the found electronic device among the plurality of communication protocols included in the wireless communication module 130. And, it can be connected to the electronic device through the determined communication protocol.

Next, the conversion unit 120 converts the data received from the wireless communication module 130 into data that can be recognized by the CAN communication module 110.

For example, referring to the method of transmitting the firmware update data described above through the communication device 100, the wireless communication module 130 may receive a binary message from an external electronic device (or the mobile terminal 300). In addition, the received binary message is transmitted to the conversion unit 120. The conversion unit 110 converts the data frame received from the wireless communication module 130 into a data frame for communication of the CAN communication module 110. In addition, the second receiver 131 may transfer the data from the wireless communication module 130 to the converter 110.

On the other hand, in general, since the CAN frame, which is a data frame for communication of the CAN communication module 110, has a maximum size of 8 bytes, the conversion unit 120 receives a frame of data transmitted through the wireless communication module 130. Split into 8 byte units.

Next, the CAN communication module 110 transfers the firmware update data divided into 8 byte units to at least one of the plurality of electronic control units 210 through an OBD terminal (not shown) included in the vehicle as described above. Thus, the firmware of the electronic control unit 210 is updated.

On the other hand, the first transmission unit 112 is a moving path for transmitting the divided data to the CAN communication module 110, the first receiving unit 111 is an electronic control unit receiving data from the CAN communication module 110 In operation 210, the response message for the data transmission may be a path for transmitting the conversion unit 120.

In addition, the conversion unit 120 may convert the response message into a frame structure recognizable by the wireless communication module 130, and then transfer the response message to the wireless communication module 130 through the second transmission unit 132. In addition, the wireless communication module 130 may notify that firmware update data is normally received by transmitting the response message to an external electronic device (or mobile terminal) 130.

That is, data output from the converter 120 to the CAN communication module 110 is transmitted through the first transmitter 112 and data output from the wireless communication module 130 to the converter 120. May be transmitted through the second receiver 131.

In addition, the response message output from the CAN communication module 110 to the converter 120 is transmitted through the first receiver 111, and is output from the converter 120 to the wireless communication module 130. The response message may be transmitted through the second transmitter 132.

As described above, the communication apparatus according to an embodiment of the present invention includes both a wireless communication module and a CAN communication module, so that the firmware update data can be transmitted using a wireless signal from a mobile terminal, thereby providing a wired cable. The inconvenience to equip was eliminated. Furthermore, the communication device according to an embodiment of the present invention converts the firmware update data received through the radio signal into a data form suitable for transmission to the vehicle, so that the communication device can smoothly communicate with the mobile terminal even if a separate compatible device is not provided. can do.

Hereinafter, a method of data communication using the communication apparatus according to the present invention will be described in more detail with reference to FIGS. 3 and 4.

First, as shown in FIG. 3, the wireless communication unit 130 (see FIG. 2) of the communication apparatus according to the present invention receives first data from an external electronic device through a wireless signal (S210). Here, the first data refers to data received from the wireless communication unit, and is named using numbers to distinguish the second data to be described later.

Here, the first data may be firmware update data for updating firmware of the electronic control unit included in the vehicle unit, and the first data may have a predetermined frame size according to a wireless communication method.

As described above, when the first data is received from the external electronic device (S210), the conversion unit 130 analyzes the frame size of the received first data (S220).

If the frame size of the first data is different from the preset frame size, the first data is converted into second data having a preset frame size (S230).

That is, when the frame size of the first data is not suitable for CAN communication, the conversion unit 130 may convert the second data into the second data having the frame size for CAN communication.

For example, as shown in (a) of FIG. 4, when the unit frame size of (A) of the first data is 32 bytes, the conversion unit 130 is shown in (b) of FIG. 4. As described above, the first data A may be divided to have a unit frame having a different size from that of the first data A. FIG.

For example, when the frame size preset by the converter 130 to transmit to the CAN communication module 110 is 8 bytes, the converter 130 transmits the first data A to the unit frame size of 8 bytes. The data may be divided into 1-1 data (a1), 1-2 data (a2), 1-3 data (a3), and 1-4 data (a4).

As described above, the conversion unit 130 converts the second data (first-first data a1, first-second data a2, and first-three data a3) converted to change the frame size. 4) to the CAN communication module 110 (see FIG. 1).

The CAN communication module 110 transmits the second data to at least one of the plurality of electronic control units included in the vehicle (S240).

As described above, a communication apparatus and a control method thereof according to an embodiment of the present invention converts data received by using a radio signal into a data format suitable for communicating with a CAN (Controller Area Network) communication module, thereby providing various electronics. It can increase the compatibility with the device.

In addition, the present invention by using a wireless signal, by transmitting data to the electronic control unit included in the vehicle, it is possible to reduce the inconvenience of having to have a wired interface, such as connecting a vehicle with a wired cable in the prior art. .

100: communication device 110: CAN communication module
111: first receiver 112: first transmitter
120: converter 130: wireless communication module
131: second receiver 132: second transmitter
200: vehicle unit 210: electronic control unit
300: electronics

Claims (8)

In the communication device capable of data communication with a plurality of electronic control unit (ECU),
A CAN (Controller Area Netwrk) communication module for data communication with at least one of the plurality of electronic control units (ECU);
A wireless communication module for receiving first data from an external electronic device using a wireless signal; And
And a converting unit converting the first data received by the wireless communication module into second data recognizable by the CAN communication module and transferring the converted second data to the CAN communication module.
The apparatus of claim 1, wherein the converting unit
And converting the second data into a second data having a frame size different from the frame size of the first data.
3. The method of claim 2,
And a frame size of the second data corresponds to 8 bytes.
The method of claim 1,
A first transmitter for transmitting the second data output through the converter to the CAN communication module, and a second receiver for transmitting the first data output through the wireless communication module to the converter,
And the first transmitter and the second receiver are electrically connected to the converter.
5. The method of claim 4,
A first receiver for transmitting a response message output from the CAN communication module to the converter;
And a second transmitter for transmitting a response message output through the converter to the wireless communication module.
And the first receiver is electrically connected to the CAN communication module and the first receiver to the wireless communication module, respectively.
In the data communication method for transmitting data to a vehicle including a plurality of electronic control unit (ECU),
Receiving first data from an external electronic device through a wireless signal;
Analyzing a frame size of the received first data;
If the frame size of the first data is different from a preset frame size, converting the first data into second data having a preset frame size; And
And transmitting the second data to at least one of the plurality of electronic control units.
The method according to claim 6,
And the first data is firmware update data associated with at least one of the plurality of electronic control units.
The method of claim 7, wherein the converting step
And dividing the first data to correspond to the preset frame size.
KR1020120055654A 2012-05-24 2012-05-24 Communication device and data communication metho using the communication device, data communication system for vehicle KR20130131806A (en)

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KR1020120055654A KR20130131806A (en) 2012-05-24 2012-05-24 Communication device and data communication metho using the communication device, data communication system for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017062448A1 (en) * 2015-10-06 2017-04-13 Huf North America Automotive Parts Manufacturing Corp. System and method for locating a wireless communication device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017062448A1 (en) * 2015-10-06 2017-04-13 Huf North America Automotive Parts Manufacturing Corp. System and method for locating a wireless communication device

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