KR100829829B1 - Vehicle module control device using Labview - Google Patents

Abstract

The present invention is to provide a module control apparatus for a vehicle suitable for minimizing the cost and time required for module design by designing the module while watching the screen displayed on the monitor using the Labview, the Labview of the present invention (Labview) The vehicle module control apparatus using a) communicates with a plurality of smart ECUs that control the corresponding electrical components in accordance with data input through the LIN bus, and communicates with the plurality of smart ECUs by a LIN protocol. The plurality of smart devices simultaneously output data to an interface unit that performs a function of interfacing with a PC, and a smart ECU that is connected to the interface unit through RS-232C and controls a corresponding function to perform a function selected by a designer. Data from ECUs can be displayed on the screen by running the LabVIEW program. It is characterized in that comprises a PC for display.

Module Design, Labview

Description

Device for controlling automobile module using a labview

1 is a block diagram of a vehicle module control apparatus according to the prior art

2 is a diagram illustrating a structure of frame data according to a module control apparatus for a vehicle using a labview of the present invention.

3 is a block diagram of a vehicle module control apparatus using a labview of the present invention

4 is a view showing a simulation screen displayed on the PC monitor according to the vehicle module control apparatus using the LabVIEW of the present invention

Explanation of symbols for main parts of the drawings

31: LIN bus 33_1 to 33_N: motor

35_1 to 35_N: Smart ECU 37: Interface unit

39: PC

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a module control apparatus for a vehicle, and more particularly, to a module control apparatus for a vehicle using a labview suitable for effectively designing a module necessary for operating various vehicles using a labview program.

Today's cars are simply moving away from their transportation functions and expanding into office spaces that are more comfortable and convenient for the driver, and they are not only equipped with more electronic components, which makes the design more complex, but also controls each electronic component. There is also considerable difficulty in designing the modules for this.

In other words, modern cars use wireless internet in the car, operate a location tracking system using GPS satellites, adjust the window's up / down, and adjust the tilt angle of the steering wheel. In order to carry out the convenient functions, a number of modules must be designed to control the electronic components, and the design of such modules is an important part of the automobile industry, and therefore, the design of the module can satisfy the newly required consumer desires. It should be done in a way that can be met.

Hereinafter, a vehicle module control apparatus according to the related art will be described with reference to the accompanying drawings.

1 illustrates a configuration of a conventional vehicle module control apparatus.

That is, as shown in FIG. 1, a LIN drive IC 13 mounted on a PCB and connected to a local interconnect bus (LIN) bus 11 and a plurality of smart ECUs connected to the LIN bus 11. Motors (17_1, 17_2, 17_3, .15) connected to (15_1, 15_2, 15_3, ..., 15_N) and each smart ECU (15_1, 15_2, 15_3, ..., 15_N) and controlled by the ECU. 17_N), the central control unit 19 for transmitting and receiving data to and from the LIN drive IC 13 on the PCB and controlling the entire system, various function switches selected by the designer and on / off of the switches It is configured to include a switch input unit (21a) and LED array unit 21b to indicate whether or not by LED.

Here, the LIN drive IC 13 converts the output signal of the central controller 19 into frame data according to the LIN protocol, and transmits data provided from each ECU through the LIN bus 11 at the central controller 19. In addition to performing an interface function that converts the signal into a processable signal, each ECU is called a slave, and serves as a master to control the slave.

In the conventional vehicle module control device, for example, when a designer selects a function switch of the switch input unit 21a, an LED indicating whether the corresponding switch is on or off is operated, and the central control unit 19 is selected by the designer. Outputs data so that the function corresponding to the switch can be performed. That is, when the central control unit 19 outputs data to the LIN drive IC 13, the LIN drive IC 13 converts the signal output from the central control unit 19 in accordance with the LIN communication network to the LIN bus 11 Put on.

In this case, since the ID data of the ECU controlling the function of the switch selected by the designer is recorded in the frame data loaded on the LIN bus 11, even if a plurality of ECUs are connected to the LIN bus 11, the frame data is stored. By checking the ID information recorded in the ECU, the ECU can check whether the data is necessary for the ECU. Accordingly, the ECU performs the function corresponding to the received data. For reference, reference numeral 23 in the drawing indicates a JIG.

However, the conventional vehicle module control apparatus as described above has the following problems.

By implementing a drive IC, which is a master, to control a smart ECU, which is a slave, in hardware, a lot of time and money are required for system design, and communication errors between the slave and the master cannot be identified. It is difficult to prepare a countermeasure.

The present invention has been made to solve the above problems of the prior art, by designing the module while watching the screen displayed on the monitor using the Labview (Labview), by selecting a Labview suitable for minimizing the cost and time required for module design An object of the present invention is to provide a module control device for a vehicle.

In order to achieve the above object, a module module control apparatus for a vehicle using Labview according to the present invention includes a plurality of smart ECUs for controlling corresponding electronic components in accordance with data input through a LIN bus, the plurality of smart ECUs, and a LIN protocol. Communication unit and a smart ECU that controls the function to perform the function selected by the designer, which is connected with the interface unit via RS-232C and performs an interface between the smart ECU and the PC. And outputting the data and simultaneously displaying data sent from the plurality of smart ECUs on a screen by executing a Labview program.

Hereinafter, a vehicle module control apparatus using Labview of the present invention will be described with reference to the accompanying drawings.

First, before describing a vehicle module control apparatus according to the prior art, a brief description of Labview is as follows.

A program called "Labview" is often called a virtual instrument because it can be configured to look like a real device on a computer. It is a programming language based on text such as Basic and C-language. It is also called graphical programming language (G) because it is programmed in such a way as to create a diagram.

Thus, text-based programming languages are executed sequentially from line to line, whereas in Labview, the order in which the programs are run depends on the flow of data, which allows Labview to control various devices from a computer. In order to make this possible, several functions are basically provided so that data from the devices can be stored in a computer.

In the module control device of the present invention using Labview as described above, data transmission from the PC as the master to each smart ECU as the slave is transferred to the interface unit through RS-232C, converted into a form suitable for the LIN communication network, and then output on the LIN bus. Data transmission from each smart ECU to the PC is transferred to the interface unit through the LIN communication network, converted into a signal suitable for the PC, and then input to the PC through the RS-232C.

Here, the LIN communication network will be briefly described.

LIN is a serial communication protocol that can efficiently support the control of mechatronic nodes in distributed automotive applications. It has the following features.

One). Single Master (Master Task & Slave Task) / Multi Slave (Slave Task)

2). Common UART / SCI Interface

3). Self Synchronization

4). Latency time for signaling

5). Low cost single wire method

6). 20kbps transmission speed

7). Selection of transfer byte (2, 4, 8 bytes)

8). Data checksum security and error detection

In the LIN protocol having such a feature, only the number of data fields is selected from one of 2, 4, 6, and 8 bytes, and has a fixed format. The structure of such a data frame is shown in FIG.

As shown in Fig. 2, the structure of the frame data output from the PC, which is the master, is configured in the order of Sync Break bit / Sync Field / Master ID / Data Field / Check Thumb / Slave. The slave performs the corresponding function according to the data sent from the master, and simultaneously loads the data owned by the slave (data indicating the state of each electric component) in the portion allocated to load the slave data among the data fields. Return to the master.

Thus, the master PC can execute the data sent from each slave in Labview to find the most efficient way for each slave to perform the corresponding function, and design the slave's function accordingly.

On the other hand, Figure 3 is a block diagram of a vehicle module control apparatus using the Labview of the present invention, the LIN bus 31 and the motor (33_1, 33_2, 33_3, ..., 33_N) to control the operation of the electric component The plurality of smart ECUs 35_1, 35_2, 35_3, ..., 35_N to control, one side is connected to the LIN bus 31, the other side is connected to the RS-232C to handle the interface between the smart ECU and the PC The interface unit 37 and the respective smart ECUs 35_1, 35_2, 35_3, ..., through the interface unit 37 for the effective design of each smart ECU (35_1, 35_2, 35_3, ..., 35_N) 35_N) is configured to include a PC (39) for executing the data from the LabVIEW program to display it to the user (system designer).

Here, each of the smart ECUs 35_1, 35_2, 35_3,..., 35_N has a unique ID, and the functions controlled by each ECU are different. For example, the first smart ECU 35_1 controls the operation of a window of the vehicle, and the window moves upward or downward depending on whether the switch is on or off. The second smart ECU 35_2 determines the fold / unfold according to whether the switch is on or off, and also controls the up, down, left, and right movements of the mirror. 35_3) controls front / rear movement and up / down movement of the driver seat (Seat).                     

On the other hand, Figure 4 shows a simulation screen according to the vehicle module control apparatus using the Labview of the present invention, it shows a screen displayed on the monitor of the PC.

As shown in the figure, the display is divided into a mirror control area, a window control area, a door control area, a power seat control area, and a tilt control area. The door is additionally transmitted from the master PC to the smart ECU, The data is divided into a transmission data area displaying a data situation related to tilt and a power seat and a reception data area displaying a data situation related to doors, windows, mirrors, and tilts received from each smart ECU.

Herein, the operation of the function switch of each control area will be described.

The fold / unfold switch of the mirror control area performs fold / unfold operation of the mirror under the control of the smart ECU that controls the fold / unfold function according to whether it is on or off, and the mirrors are located in the up / down, left / right directions. The position of the mirror correspondingly changes according to the selection of the corresponding switch for movement.

At this time, the smart ECU that controls the fold / unfold of the mirror and the top / bottom, left / right has the data (the fold / unfold and top) that is owned in the portion assigned to the data field of the frame data on the LIN bus Motor-related information for up / down, left / right functions are loaded and transmitted to the PC so that the PC displays the data sent by the smart ECU in the reception data area.

When the heat switch of the drawing (ON) is turned on (heat) is operated, wherein the lamp is an identification lamp for identifying that the heat is operated.

On the other hand, the up / down switch displayed in the window control area is a window up / down operation according to whether it is on or off, and the auto up / down switch automatically turns on the window when the corresponding switch is turned on. Auto). At this time, the smart ECU for controlling the window-related function transmits the position data of the window to the PC, and the PC displays it in the received data area of the screen.

The power seat control area includes a function switch for operating the driver's seat forward and backward, a function switch for operating the driver's seat back / forward, a function switch for operating the rear part of the driver's seat, and a driver's seat. The function switch for operating the front part up and down is displayed, and the smart ECU controlling the operation of the driver seat transmits the current value applied to the load to the PC each time the corresponding function is performed so that the current value is displayed on the screen. do.

For example, "Dir-A" is a function switch for moving the seat of the driver forward, and "Dir-B" is for moving the seat of the driver backward. "Dir-A" is a function switch for operating the rear part of the driver's seat upwards, and "Dir-B" is a function switch for operating the rear part of the driver's seat up and down. This is a function switch to move the rear part of the driver's seat downward.

On the other hand, in the tilt control area, the function switches for operating the handle are displayed. Among them, the tilt up switch and the down switch are for operating the handle up and down, and the tilt in ) And Out switches are functional switches that allow the handle to move forward and backward in a horizontal position.

Here, the respective function switches displayed in the power seat control area and the tilt control area may be used to adjust the position of the driver's seat and the position or the angle of the steering wheel which are suitable for the body shape and the physique of the driver.

Hereinafter, the operation of the vehicle module control apparatus of the present invention with reference to FIGS. 3 and 4 are as follows.

First, when the user selects the fold / unfold switch of the mirror control area shown in FIG. 4, the PC 39 sends a signal indicating that the fold switch is selected through the RS-232C interface unit 37. )

Accordingly, the interface unit 37 includes ID data of the PC 39 and data for performing a fold function by converting the frame data into a form of frame data suitable for a LIN communication network, and ID information of a smart ECU that actually controls the motor for the fold function. The frame data is output on the LIN bus 31.

The LIN bus 31 is connected to a plurality of smart ECUs 35_1, 35_2, 35_3,..., 35_N, and each smart ECU 35_1, 35_2, 35_3,..., 35_N is connected to a LIN bus ( 31. If the ID information of the smart ECU loaded on the frame data on the frame data is checked and the data is matched with the ID information of the smart ECU, the data is received. Since the data field contains data according to the fold function, the second smart ECU controlling the operation of the mirror ( 35_2 receives the data on the LIN bus 31 and controls the motor as much as the data, thereby performing the folder function and simultaneously feeding back the data related to the motor in the data field.

Accordingly, when the interface unit 37 transmits the data sent by the second smart ECU 35_2 included in the frame data fed back through the LIN bus 31 to the PC 39 via RS-232C, the PC 39 ) Is displayed on the monitor of the PC 39 by executing the Labview program.

Therefore, the designer can design the optimal smart ECU while checking the communication status with the smart ECU through the monitor of the PC.

On the other hand, in addition to the folder / unfolder operation, the operation of the power seat by the vertical rear switch for operating the rear of the driver seat up and down is added among the many function switches displayed in the power seat control area. Explained as follows.

As shown in Fig. 4, when the mouse clicks on the "Dir-A" switch among the vertical rear switches in the power seat control area, the PC 39 switches the "Dir-A" of the vertical rear switch via RS-232C. A signal indicating that the selection is made is output to the interface unit 37.

Accordingly, the interface unit 37 controls the ID information of the PC 39, the data for moving the rear part of the driver's seat upward, and the motor for actually moving the rear part of the seat upward by converting the frame data into a form suitable for the LIN communication network. The frame data including the ID information of the smart ECU is output on the LIN bus 31.                     

The LIN bus 31 is connected to a plurality of smart ECUs 35_1, 35_2, 35_3,..., 35_N, and each smart ECU 35_1, 35_2, 35_3,..., 35_N is connected to a LIN bus ( 31) Check the ID information of the smart ECU on the frame data on the frame data and accept the data if it matches the ID information.The data field contains the data necessary to move the back of the driver's seat upward. 3 The smart ECU 35_3 receives the data on the LIN bus 31 and controls the corresponding motor as much as the data to move the rear part of the driver's seat upwards and at the same time records the data related to the motor in the data field and feeds it back. Let's do it.

Accordingly, when the interface unit 37 transmits the data sent by the third smart ECU 35_1 included in the frame data fed back through the LIN bus 31 to the PC 39 through RS-232C, the PC 39 ) Is displayed on the monitor of the PC 39 by executing the Labview program.

Therefore, the designer can design the optimal smart ECU while checking the communication status with the smart ECU through the monitor of the PC.

As described above, the vehicle module control apparatus using the Labview of the present invention has the following effects.

Using the LabVIEW program, you can design the module more effectively through software control while checking the data transmission status of each module, and compared with the conventional design that requires direct hardware configuration using JIG. Minimize time and money spent on

Claims (4)

A plurality of smart ECUs that control corresponding electronic components in response to data input through the LIN bus; An interface unit for communicating with the plurality of smart ECUs by an LIN protocol and performing an interface function between the smart ECU and a PC; It is connected to the interface unit through RS-232C and outputs data to the smart ECU that controls the function to perform the function selected by the designer, and simultaneously executes the Labview program to send data from the plurality of smart ECUs. PC comprising a display; configured to include, The plurality of smart ECUs may include a smart ECU controlling a window of a vehicle, a smart ECU controlling a mirror, a smart ECU controlling an actuator, a smart ECU controlling a power sheet, and a tilt of a steering wheel. Vehicle module control apparatus using a lab (Labview) characterized in that it comprises a smart ECU. delete The apparatus of claim 1, wherein each of the smart ECUs controls a motor to perform a corresponding function. The apparatus of claim 1, wherein each of the smart ECUs has a unique ID.

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