KR101259170B1 - Communication device for collecting information in vehicle and method for transmitting and receiving data therein - Google Patents

Abstract

The present invention provides a connector unit configured to connect with an electronic control system of a vehicle; A wireless communication unit configured to transmit data to a first external device; And when connected to the electronic control system of the vehicle through the connector unit, confirms a communication protocol between the connector unit and the electronic control system, and measures data of a vehicle sensor obtained from the electronic control system of the vehicle through the communication protocol; And a control unit for transmitting a failure code to the first external device through the wireless communication unit, and a method for transmitting and receiving data in a communication device for information collection of a vehicle and a communication device for information collection of a vehicle.

Description

TECHNICAL DEVICE FOR COLLECTING INFORMATION IN VEHICLE AND METHOD FOR TRANSMITTING AND RECEIVING DATA THEREIN}

The present invention relates to a data transmitting / receiving method in a communication device for collecting information of a vehicle and a communication device for collecting information of a vehicle.

Conventionally, a technology for controlling a state of a vehicle through a terminal mounted in a vehicle by a driver has been developed, and a representative example of such a technique is telematics.

Telematics means that the driver can remotely diagnose the vehicle through the wireless network, and can use the auto PC equipped with the wireless modem to access various information such as traffic and living information and emergency rescue, and can send phone messages to the office and friends. Of course, you can send and receive voice emails and download audiobooks.

On-Star, a joint venture between General Motors (GM) and Motorola in the United States, is a leader in the field and already uses Global Positioning System (GPS) satellites. Cooperation between car makers such as Qualcomm and Benz-Deutsche Telecom and mobile communication companies is active.

In Korea, cooperation between automobile companies and mobile telecommunication companies is active for the development of telematics services. Hyundai and Kia Motors signed a strategic alliance with LG Telecom to develop wireless vehicle information services. Signed DreamNet service alliance with location tracking technology.

However, no consideration has been given to implementing telematics for an existing vehicle that does not have a telematics function. That is, it is not possible to transmit various sensor measurement values obtained from an electronic control system such as an ECU to an existing vehicle to an external device such as a smartphone, and the driver of the vehicle cannot check the state of the vehicle through the external device.

The present invention is to provide a method for transmitting and receiving data in a vehicle information collection communication device and a vehicle information collection communication device, which enable a vehicle driver to grasp the state of the vehicle through an external display device such as a smartphone. .

In order to solve the above problems, an embodiment of the present invention, a communication device for collecting information of a vehicle, the connector unit configured to connect with the electronic control system of the vehicle; A wireless communication unit configured to transmit data to a first external device; And when connected to the electronic control system of the vehicle through the connector unit, confirms a communication protocol between the connector unit and the electronic control system, and measures data of a vehicle sensor obtained from the electronic control system of the vehicle through the communication protocol; It may include a control unit for transmitting a failure code to the first external device through the wireless communication unit.

According to an aspect of an embodiment of the present invention, the communication protocol may include one of ISO 9141-2, KWP 2000, and KOBD.

According to an aspect of an embodiment of the present invention, the control unit may check the communication protocol through a first communication line, and if the communication protocol is not confirmed through the first communication line, may check the communication protocol through the second communication line. have.

According to an aspect of an embodiment of the present invention, the first communication line may be a CAN line, and the second communication line may be a K-line.

According to an aspect of an embodiment of the present invention, the wireless communication unit may be a short range communication module, and the first external device may be a mobile communication terminal.

According to an aspect of an embodiment of the present invention, the apparatus may further include a memory for storing a vehicle diagnostic program, and the controller may correct the fault code by using the vehicle diagnostic program.

According to an aspect of an embodiment of the present invention, the communication device for collecting information of the vehicle may further include a data communication connection for upgrading the vehicle diagnostic program.

According to an aspect of an embodiment of the present invention, the communication device for collecting information of the vehicle may further include a wired connection for connecting with a second external device which is a wired communication device.

In another embodiment of the present invention, a method for transmitting and receiving data in a communication device for collecting information of a vehicle is provided. Checking a communication protocol between the connector unit and the electronic control system when connected to the electronic control system of the vehicle through a connector unit; Receiving measurement data and a fault code of a vehicle sensor from the electronic control system of the vehicle through the identified communication protocol; And transmitting the measurement data and the fault code to a first external device through a wireless communication unit.

According to an aspect of another embodiment of the present invention, the communication protocol may include one of ISO 9141-2, KWP 2000, and KOBD.

According to an aspect of another embodiment of the present invention, when the communication unit is connected to the electronic control system of the vehicle through the connector unit, the step of confirming the communication protocol of the connector unit and the electronic control system, the communication protocol via a first communication line If the communication protocol is not confirmed through the first communication line, the method may include checking the communication protocol through the second communication line.

According to an aspect of another embodiment of the present invention, the first communication line may be a CAN line, and the second communication line may be a K-line.

According to an aspect of another embodiment of the present invention, the wireless communication unit may be a short range communication module, and the first external device may be a mobile communication terminal.

According to an aspect of another embodiment of the present invention, the data transmission / reception method in the vehicle information collection communication device may further include correcting the fault code using the vehicle diagnostic program stored in a memory. have.

According to an aspect of another embodiment of the present invention, the method may further include upgrading the vehicle diagnostic program.

According to an embodiment of the present invention having the above-described configuration, when a communication device for collecting information of a vehicle according to the present invention is connected to an electronic control system of a vehicle, a sensor obtained from various sensors of the vehicle obtained by the electronic control system By receiving the value and the fault code and transmitting it to the external device (smart phone) by wire or wirelessly, the vehicle driver or mechanic with the smart phone can easily grasp the current state of the vehicle and the trouble spot.

In addition, by simply and easily automatically setting the communication protocol, the vehicle driver and the mechanic can easily read the sensor values and fault codes obtained from the vehicle's electronic control system.

1 is a conceptual diagram illustrating an application example of a communication device for collecting information of a vehicle, which is an embodiment of the present invention;
2 is a perspective view of a communication device for collecting information of a vehicle, which is one embodiment of the present invention;
3 is a block diagram of a communication device for collecting information of a vehicle, which is an embodiment of the present invention;
4 is a flowchart illustrating a data transmission / reception method in a communication device for collecting information of a vehicle, which is another embodiment of the present invention.

Hereinafter, a method of transmitting and receiving data in a vehicle information collection communication device and a vehicle information collection communication device according to the present invention will be described in more detail with reference to the accompanying drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

1 is a conceptual diagram illustrating an application example of a communication device for collecting information of a vehicle, which is an embodiment of the present invention. Referring to FIG. 1, a communication device 200 for collecting information of a vehicle according to the present invention is connected to a vehicle 100 and a mobile communication terminal 300.

The vehicle 100 is generally a driving device for transporting cargo or people, and has an electronic control system for optimizing the operation of the vehicle. Such an electronic control system generates a failure code by detecting measurement data obtained from various sensors and when any one of component parts fails. At this time, there are standard protocols for generating such measurement data and fault codes. The standard protocols include ISO 9141-2, KWP 2000, and KOBD. In addition, communication systems for driving such standard protocols include K-line communication and CAN communication. These standard protocols and communication lines are determined by the manufacturer of each vehicle. Recently, CAN communication is widely used, but some existing vehicles use K-line communication.

The communication device 200 for collecting information of the vehicle is a component connected to an on-board diagnostic (OBD), which is a diagnostic terminal installed in the vehicle 100, and controls the engine at the time of key-on of the vehicle 100. It automatically communicates with ECU, which is a computer, and TCU, which is a transmission control computer, to collect various kinds of information of the vehicle. Here, the OBD is an international standard vehicle inspection connector that enables the user to know the state of the vehicle 100 by using monitoring equipment when a problem occurs in the exhaust gas and fuel system. Through this, it is possible for the information collection communication device 200 of the vehicle to communicate with the electronic control system of the vehicle 100.

The communication device 200 for collecting information of the vehicle will be described in more detail with reference to FIGS. 2 and 3.

The mobile communication terminal 300 is an apparatus for displaying a failure code for identifying a vehicle state collected through the communication device 200 for collecting information of the vehicle or measurement data obtained through various sensors through a predetermined program. . The failure code and measurement data herein include a failure state and abnormal state information of the vehicle 100, travel information, fuel consumption information in the engine, torque information, and the like.

The mobile communication terminal 300 and the vehicle communication device 200 may be connected through a short range communication system such as Bluetooth or Zigbee. Alternatively, the connection may be made through a wired connection unit 240 installed in the vehicle communication device 200.

Hereinafter, with reference to Figures 2 and 3, it will be described in detail with respect to the communication device 200 for collecting information of an embodiment of the present invention.

2 is a perspective view of a communication device 200 for collecting information of a vehicle, which is an embodiment of the present invention. As shown in FIG. 2, the communication device 200 for collecting information of a vehicle according to the present invention has a rectangular shape as a whole, and a connector portion 210 for connecting to an OBD diagnostic terminal is formed on a front portion thereof. The upper surface may include a wired connection unit 240 for wired connection with the second external device.

The communication device 200 for collecting information of the vehicle may further include a fastening part (not shown) which may be connected to the OBD diagnosis terminal of the vehicle 100 and fixed to one side of the vehicle 100. In addition, a data communication unit 250 for firmware upgrade may be installed at the rear side.

Hereinafter, an electronic configuration of the communication device 200 for collecting information of the vehicle will be described in more detail with reference to FIG. 3.

3 is a block diagram of a communication device 200 for collecting information of a vehicle, which is an embodiment of the present invention. As shown, the communication device for information collection 200 of the vehicle according to an embodiment of the present invention, the connector unit 210, memory 220, wireless communication unit 230, wired connection unit 240, data communication unit 250 ) And the controller 260.

The connector unit 210 is configured to be connected to the electronic control system of the vehicle 100. More specifically, the connector unit 210 is a component for connecting to the OBD diagnostic terminal of the vehicle 100. The connector 210 includes a K-line pin and a CAN pin. The K-line pin is for the case where the communication line of the electronic control system of the vehicle 100 is K-line, and the CAN pin is for the case where the communication line of the electronic control system of the vehicle 100 is CAN.

The memory 220 is a component for storing a vehicle diagnostic program. The vehicle diagnostic program is a program that reads the measurement data and the fault code of the vehicle 100 obtained through the connector unit 210, analyzes the data, and corrects the fault codes. For example, in the case of a North American export type vehicle and a domestic vehicle, a failure code may be different. That is, when a North American export type vehicle is operated in Korea, the electronic control system of the vehicle 100 generates a fault code, but when the code is not a fault code in the country, the vehicle diagnostic program serves to correct this.

The memory 220 may include a flash memory type, a hard disk type, a multimedia card micro type, and a card type memory (for example, SD or XD memory). Random Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory It may include a storage medium of at least one type of a magnetic disk, an optical disk.

The wireless communication unit 230 is configured to transmit the measurement data and the fault code to the mobile communication terminal 300 or a smart phone (first external device). The short range communication module may be used as the wireless communication unit 230. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The wired connection unit 240 is a device for connecting with a second external device (navigation or dedicated display device) that is a wired communication device. Through this wired communication unit, the measurement data and the fault code transmitted from the electronic control system of the vehicle 100 can be transmitted to the second external device.

 The data communication unit 250 is a component for upgrading the vehicle diagnostic program stored in the memory 220.

When the controller 260 is connected to the electronic control system of the vehicle 100 through the connector unit 210, the controller 260 checks the communication protocol between the connector unit 210 and the electronic control system, and through the communication protocol. The measurement data and the fault code of the vehicle sensor obtained from the electronic control system of the vehicle 100 may be transmitted to the first external device through the wireless communication unit 230. It transmits to the second external device through the wired connection 240.

The operation of the controller 260 will be described in more detail through the flowchart of FIG. 4.

4 is a flowchart illustrating a data transmission / reception method of the communication device 200 for collecting information of a vehicle, which is another embodiment of the present invention.

As shown, when connected to the electronic control system of the vehicle 100 through the connector unit 210, the communication protocol of the electronic control system of the vehicle 100 through the first communication line of the connector unit 210 Check (S11). As described above, communication lines used in the communication protocol of the vehicle 100 include K-line and CAN, where the first communication line may be CAN. The communication protocols identified by CAN are KWP 2000 and KOBD.

CAN was first developed in 1986 by Bosch, a German automotive component company, at the request of the automotive company Mercedes, to develop a communication device for communication between three different ECU-Electronic Control Units in an automobile. Initially, the UART method was considered, but because it is a one-to-one point-to-point communication method, it is not suitable as a communication method between three different ECUs. CAN is very resistant to noise, and its transmission rate is very fast compared to K-line. That is, CAN can use up to 1 Mbps.

Then, the communication protocol is checked through the first communication line, and if the communication protocol is not confirmed through the first communication line, the communication protocol is confirmed through the second communication line (S13). The second communication line may be a K-line. Since the K-line has a slower transmission speed than CAN, using the first communication line as CAN can speed up the communication protocol checking process of the vehicle 100. K-line identifies ISO 9041-2, KWP 2000, and KOBD.

When the communication protocol of the vehicle 100 connected through the first communication line and the second communication line is confirmed as described above, measurement data and a failure code of the vehicle sensor are obtained from the electronic control system of the vehicle 100 through the identified communication protocol. Receive (S15). If the communication protocol is not confirmed through the first communication line and the second communication line, an error message is transmitted to the first external device or the second external device described later (S17).

When the measurement data and the failure code of the vehicle sensor are received from the electronic control system of the vehicle 100 through the checked communication protocol, the measurement data and the failure code are transferred to the first external device through the wireless communication unit 230. Transmit (S19). In this case, the wireless communication unit 230 may be a short range communication module, and the first external device may be a mobile communication terminal 300. Alternatively, the data may be transmitted to the second external device through the wired connection unit 240 instead of the wireless transmitter.

On the other hand, for the received fault code, the fault code can be corrected by using the vehicle diagnostic program stored in the memory 220. Since this has been described above, the description thereof will be omitted.

In addition, the vehicle diagnostic program should be upgraded. That is, when connected to an external computer through the data communication unit 250, the vehicle diagnostic program is upgraded accordingly.

According to an embodiment of the present invention having the above-described configuration, when a communication device for collecting information of a vehicle according to the present invention is connected to an electronic control system of a vehicle, a sensor obtained from various sensors of the vehicle obtained by the electronic control system By receiving the value and the fault code and transmitting it to the external device (smart phone) by wire or wirelessly, the vehicle driver or mechanic with the smartphone can easily grasp the current state of the vehicle and the trouble spot.

In addition, by simply and easily automatically setting the communication protocol, the vehicle driver and the mechanic can easily read the sensor values and fault codes obtained from the vehicle's electronic control system.

The data transmission / reception method of the above-described information collection communication device of the vehicle and the information collection communication device of the vehicle is not limited to the configuration and method of the above-described embodiments, but the embodiments may be modified in various ways. All or some of the embodiments may be selectively combined in order to accomplish this.

100: vehicle
200: communication device for collecting information of the vehicle
300: mobile communication terminal
210: connector portion
220: Memory
230:
240: wired connection
250: data communication unit
260:

Claims (15)

A connector unit configured to connect with the electronic control system of the vehicle;
A wireless communication unit configured to transmit data to a first external device;
When connected to the electronic control system of the vehicle through the connector unit, confirm the communication protocol of the connector unit and the electronic control system, and measurement data and failure of the vehicle sensor obtained from the electronic control system of the vehicle through the communication protocol A control unit which transmits a code to the first external device through the wireless communication unit;
A memory for storing a vehicle diagnostic program; And
A data communication connection for upgrading the vehicle diagnostic program;
And the control unit corrects the fault code by using the vehicle diagnostic program.
The method of claim 1,
Wherein said communication protocol comprises one of ISO 9141-2, KWP 2000, and KOBD.
3. The method of claim 2,
The control unit,
And confirming the communication protocol via the first communication line, and confirming the communication protocol via the second communication line if the communication protocol is not confirmed through the first communication line.
The method of claim 3, wherein
A communication device for collecting information of a vehicle, wherein the first communication line is a CAN line and the second communication line is a K-line.
The method of claim 1,
The wireless communication unit is a short range communication module,
And said first external device is a mobile communication terminal.
delete delete The method of claim 1,
And a wired connection for connecting with a second external device that is a wired communication device.
Checking a communication protocol between the connector unit and the electronic control system when connected to the electronic control system of the vehicle through a connector unit;
Receiving measurement data and a fault code of a vehicle sensor from the electronic control system of the vehicle through the identified communication protocol;
Correcting the fault code using the vehicle diagnostic program stored in a memory;
Transmitting the measurement data and the fault code to a first external device through a wireless communication unit; And
And upgrading the vehicle diagnostic program.
The method of claim 9,
The communication protocol includes one of ISO 9141-2, KWP 2000, and KOBD.
The method of claim 9,
Checking the communication protocol of the connector unit and the electronic control system when connected to the electronic control system of the vehicle through the connector unit,
Identifying the communication protocol via a first communication line, and if the communication protocol is not identified through the first communication line, identifying the communication protocol via a second communication line. How to send and receive.
The method of claim 11,
A first communication line is a CAN line and the second communication line is a K-line.
The method of claim 9,
The wireless communication unit is a short range communication module,
And the first external device is a mobile communication terminal.
delete delete

Images