KR102090061B1 - Appatarus testing bcm integrated with can - Google Patents

Abstract

A device for testing BCM integrated with CAN is disclosed. The apparatus of the present invention, a plurality of first switches for receiving a physical input signal associated with the vehicle body control module (BCM) of the vehicle from the operator performing the test, respectively corresponding to the plurality of first switches, the physical input signal A plurality of logic inputs for converting to a logic signal, a plurality of logic outputs for receiving a control signal corresponding to the logic signal and converting it into a physical output signal, and each of the logic outputs, corresponding to the physical output signal It includes a plurality of second switch portions that are turned off.

Description

Device for testing BCM integrated with CAN {APPATARUS TESTING BCM INTEGRATED WITH CAN}

The present invention relates to a device for testing a BCM integrated with CAN.

In electronics, electronic equipment plays an increasing role (safety, driver assistance, and driver information provision), and the number of electronic devices required by automobiles is rapidly increasing. As the functions related to convenience, safety, tools, and personalized driving experience increase every day, the demand for automotive electronic systems is also increasing.

 The body control module (BCM) controls various functions in the vehicle through signals. BMC manages various vehicle functions including door lock, chime control, internal / external lighting, security function, wiper, turn signal, and power management. The BCM, which connects to the car's electronic architecture, reduces reliability and affords many plug-in contacts and cable harnesses.

The BCM controls the wiper and washer, controls the lamps, controls the buzzer, controls the lighting of the ignition key, controls the timer of the glass heating element, controls the photosensitive room lamp and remote unlock timer, and power window. Controls the timer. In addition, the BCM controls the unlocking of the centralized door lock, controls the opening of the trunk, controls the automatic transmission, and communicates with the scanner.

The BCM performs various control of the vehicle body and operates independently or in connection with each function. Accordingly, the control points are diverse and the operating conditions are also difficult. For this reason, there are various problems such as logic errors or vehicle wiring errors in the initial development process of BCM. Therefore, it takes a lot of time for vehicle development, and the need for specialized equipment is caused.

Technical problem to be solved by the present invention is to provide a device for testing a BCM integrated with CAN, which can easily determine and correct problems of input / output through redirection by configuring a virtual pipeline based on the logic of the BCM. will be.

In order to solve the above technical problem, the apparatus for testing the body control module (BCM) integrated with the control area network (CAN) of the present invention is related to the body control module (BCM) of the vehicle from the operator performing the test. A plurality of first switches for receiving a physical input signal, and a plurality of logical input units for converting the physical input signal into a logical signal corresponding to each of the plurality of first switches, and a control signal corresponding to the logical signal are received. And a plurality of logical output units for converting them into physical output signals, and a plurality of second switch units that are turned on and off according to the physical output signals, respectively, and the BCM corresponds to the logical output units. A control unit for generating a control signal, an input unit for receiving the logic signal from the logic input unit, and an output unit for outputting the control signal to the logic output unit can do

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In one embodiment of the present invention, the BCM may further include a CAN communication unit that transmits the control signal output through the output unit to the control device of the vehicle.

In one embodiment of the present invention, the control unit may control to transmit the control signal through the CAN communication unit or to the logic output unit.

The present invention as described above, there is an effect that allows the operator performing a test in the BCM integrated with CAN to check the output function of the BCM by turning on the switch, to easily check the input and output problems of the BCM.

1 is an exemplary view for explaining a BCM integrated with CAN applied to an embodiment of the present invention.
Figure 2 is an exemplary view for explaining the operation of the BCM integrated with CAN of an embodiment of the present invention.
3 is a block diagram illustrating a BCM test apparatus according to an embodiment of the present invention.
4 is an exemplary view for explaining the operation of the BCM (1) according to the test apparatus of an embodiment of the present invention.
5 illustrates an example of a test signal received by the control unit 10 through the logic input unit 51 of FIG. 3.

In order to fully understand the configuration and effects of the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be implemented in various forms and various changes can be made. However, the description of this embodiment is provided to complete the disclosure of the present invention, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains. In the accompanying drawings, the components are enlarged and enlarged than actual sizes for convenience of description, and the ratio of each component may be exaggerated or reduced.

Terms such as 'first' and 'second' may be used to describe various components, but the components should not be limited by the above terms. The above terms may be used only for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the 'first component' may be referred to as a 'second component', and similarly the 'second component' may also be referred to as a 'first component'. You can. In addition, a singular expression includes a plural expression unless the context clearly expresses otherwise. The terms used in the embodiments of the present invention may be interpreted as meanings commonly known to those skilled in the art unless otherwise defined.

Hereinafter, an apparatus for testing a BCM integrated with CAN according to an embodiment of the present invention will be described with reference to the drawings.

1 is an exemplary view for explaining a BCM integrated with CAN applied to an embodiment of the present invention, (a) is for explaining a conventional case where the BCM and the CAN module is not integrated, (b) Is an exemplary view for explaining a case where the BCM and the CAN module are integrated according to an embodiment of the present invention.

As shown in (a), in the conventional case, the BCM 100 is connected via wiring with the CAN module 200, the meter cluster 300 through the CAN bus, anti-lock brake system (anti-lock brake) system, ABS) It was connected to a vehicle electronic control unit (ECU) 400 and an engine ECU 500. The display unit (not shown) was also connected via a CAN bus.

CAN (Controller Area Network) refers to network communication between multiple units that require fast real-time operation, and can reduce wiring by using two communication lines. The two communication lines are composed of LOW and HIGH. Even if one line is disconnected, the same signal can be sent to the other line to allow normal communication.

In the conventional case, the BCM 100 is not provided with a CAN module inside, and is connected to the external CAN module 200 by wiring, and is indirectly connected to the CAN bus through the CAN module 200.

Referring to (b), the BCM 1 of one embodiment of the present invention has a built-in CAN module and can be directly connected to a CAN bus. That is, it is directly connected to the CAN bus, and can perform direct communication with the internal control devices of various vehicles, such as the meter cluster 2, the ABS ECU 3, and the engine ECU 4.

Figure 2 is an exemplary view for explaining the operation of the BCM integrated with CAN of an embodiment of the present invention.

As shown in the figure, the BCM 1 integrated with CAN according to an embodiment of the present invention includes a control unit 10, a power supply unit 11, a CAN communication unit 12, a LIN communication unit 13, and a digital input unit. 14, an analog input unit 15, an output unit 16 and an LED output unit 17 may be included.

The control unit 10 may be composed of a microcontroller (Micro Controller Unit, MCU), it is possible to control the overall operation of the BMC (1).

The CAN communication unit 12 may be connected to a CAN bus to perform communication with electronic devices of a vehicle through CAN communication.

The LIN communication unit 13 may be connected to the LIN bus to perform communication with the vehicle's electronic devices through LIN communication. The Local Interconnect Network (LIN) is a communication mainly used for data transmission between the ECU 4 and the active sensor and active actuator, and is slower than CAN.

The digital input unit 14 may receive a digital input. Digital input includes air conditioner / heater input, ignition key input, parking brake input, lighting input, wiper / washer input, door input, sensor input, and remote anti-theft input.

The analog input unit 15 may receive an analog input. The analog input may include a temperature sensor input, an illumination sensor input, and a current feedback input.

The control unit 10 may receive an input from the digital input unit 14 or the analog input unit 15, and output an output signal to the output unit 16 or the LED output unit 17. Outputs output from the output unit 16 include: start relay output, internal lighting output, external lighting output, door lock control output, window / sunroof output, heater / defrost output, fuel pump output, sudden start device (BTSI) output, And an alarm output. In addition, the LED output unit 17 may output an on-off signal to the LED of the tail lamp.

As described above, since the BCM 1 is connected to various devices of the vehicle, there is a high possibility of an error in logic and a possibility of an error in the vehicle wiring, and thus development PD has many difficulties.

For convenience of explanation, the CAN communication unit 12 and the LIN communication unit 13 are only shown to be connected to the control unit 10, but this is for convenience of the drawing, the output unit 16 and the LED output unit 17 The signal output from the output unit 16 or the LED output unit 17 is connected to and may be transmitted to an external device. In addition, although the CAN communication unit 12 and the LIN communication unit 13 are only shown to be connected to the control unit 10, this is for convenience of drawing and is connected to the digital input unit 14 and the analog input unit 15 to be digital. The technical field to which the present invention pertains is that the input of the input unit 14 or the analog input unit 15 may be input to the digital input unit 14 or the analog input unit 15 through the CAN communication unit 12 or the LIN communication unit 13. It will be obvious to those with ordinary knowledge.

The present invention is to easily determine and modify the input and output of the BCM (1).

3 is a configuration diagram for explaining a BCM test apparatus according to an embodiment of the present invention, and it is for confirming a function unique to the MCU 10 by changing a physical input / output signal to logic.

As shown in the figure, the test apparatus 5 according to an embodiment of the present invention may include a plurality of switch units 51 and a plurality of logic input units 52 respectively connected to the plurality of switch units 51. have. Further, the test apparatus 5 of the present invention includes a plurality of logic output units 53 connected to the control unit 10 and a plurality of switch units 54 respectively connected to the plurality of logic output units 53. can do. For convenience of description, the switch unit 52 will be referred to as a 'first switch unit 52' and the switch unit 54 will be referred to as a 'second switch unit 54'.

The plurality of first switch units 52 are switches for physical input configured in response to each input of the BCM 1, and may be configured of, for example, buttons or icons on a touch screen for touch input. Will be able to.

Each of the switch unit 52 may be configured to correspond to an input for outputting the function of the BCM 1, and the logic input unit 51 connected thereto constitutes a logical input for outputting the function, thereby digital input unit (14) or the analog input unit 15 may be provided.

For example, when the first first switch unit 52 is the start input (IGN), the logic input unit 52 corresponding to the first switch unit 52 receives a digital logic signal corresponding to the start input (IGN). You can create and provide it to the digital input 14. The control unit 10 may output a signal corresponding to the start output through the output unit 16 and the LED output unit 17 according to the start input IGN received through the digital input unit 14.

In addition, each of the logic output unit 53, a signal output through the output unit 16 or the LED output unit 17 to confirm whether the output unit 16 or the LED output unit 17 outputs a normal signal Can be logically converted to the output for the fourth switch 54 for physical output.

Normally, the control unit 10 determines a control operation by a signal input through the logic input unit 51, outputs it through the output unit 16 or the LED output unit 17, and outputs it through the CAN communication unit 12. Although it may be transmitted to the ECU, the test apparatus 5 in one embodiment of the present invention may test the output signal. Accordingly, the control unit 10 receives the output signal output through the output unit 16 or the LED output unit 17, the logic output unit 53, and the logic output unit 53 generates a physical output corresponding thereto Therefore, it may be transmitted to the second switch unit 54.

For example, when the control unit 10 receives the starting input (IGN) through the logic input unit 51 corresponding to the first switch unit 52 in the above example, it outputs the output unit 16 and the LED output unit It can be output through (17). Signals output from the output unit 16 and the LED output unit 17 may be transmitted to each ECU through the CAN communication unit 12, or input to the logic output unit 53, the logic output unit 53 It may be converted into a physical signal and output through the second switch unit 54. For example, when the start signal IGN is input through the first switch unit 52, the logic input unit 51 converts the physical input signal of the first switch unit 52 into a logic signal, and then the digital input unit 14 Provided to, the control unit 10 outputs a control signal corresponding to the corresponding logic signal through the output unit 16 and the LED output unit 17, and the output unit 16 and the LED output unit 17 control The signal may be transmitted through the CAN communication unit 12 or provided to the logic output unit 53. The logic output unit 53 converts the control signal into a physical signal, and the second switch unit 54 can physically switch that there is an output for the corresponding input signal IGN.

As mentioned above, the first switch unit 52 and the second switch unit 54 may be configured as a physical switch or a display unit such as a touch screen. When configured as a physical switch, in the above example, if the user turns on the first switch unit 52, the second switch unit 54 is confirmed to be turned on by control, the output will be confirmed to be normal. . Or, for example, when configured as a display unit such as a touch screen, when a user touches the first switch unit 52 or turns on the display unit by soft input, an area of the display unit corresponding to the second switch unit 54 is displayed. The second switch unit 54 may be turned on in various ways, such as turning on by soft input or changing color.

4 is an exemplary view for explaining the operation of the BCM (1) according to the test apparatus of an embodiment of the present invention, for the sake of simplicity other components of the BCM (1) of FIG. Only the configuration of 5) is shown, and it is for explaining the blinker control during the control operation of the BCM (1).

When the operator performing the test inputs the starting input (IGN) through the first switch unit 52, the logic input unit 51 may convert the corresponding starting input (IGN) into a logical signal and transmit it to the control unit 10 have. At this time, although the digital input unit 14 is not shown, it is obvious that a logic signal corresponding to the starting input is transmitted to the control unit 10 through the digital input unit 14.

The control unit 10 may generate a control signal corresponding to the logical signal of the corresponding starting input (IGN), and the logical output unit 53 may generate the corresponding physical output signal and transmit it to the second switch unit 54. . Control signals corresponding to the starting input (IGN) may be left and right tail lamp on and engine on signals, and the control unit 10 generates a corresponding control signal to output logic through the output unit 16 and the LED output unit 17 The output may be output to the unit 53, and the logic output unit 53 may convert the corresponding control signal into a physical output signal and output it to the second switch unit 54.

In the example of FIG. 4, the second switch unit 54 corresponding to the left tail lamp (TURN_RH_LAMP) and the second switch unit 54 corresponding to the right tail lamp (TURN_LH_LAMP) may be turned on. Also, although the second switch unit 54 corresponding to the starting temperature is not shown, it may be turned on.

In addition, when the operator inputs the key input signal (ACC) through the first switch unit 52, the logic input unit 51 may convert the corresponding key input signal (ACC) into a logic signal and transmit it to the control unit 10. have.

The control unit 10 generates a control signal corresponding to the logical signal of the corresponding key input signal ACC, and the logical output unit 53 generates the corresponding physical output signal and transmits it to the second switch unit 54. have. Control signals corresponding to the key input signal (ACC) may be left and right tail lamp on and engine wake-up signals, and the control unit 10 generates corresponding control signals through the output unit 16 and the LED output unit 17. It can be output to the logic output unit 53, the logic output unit 53 will be able to convert the control signal to a physical output signal and output to the second switch unit 54.

Accordingly, in the example of FIG. 4, the second switch unit 54 corresponding to the left tail lamp (TURN_RH_LAMP) and the second switch unit 54 corresponding to the right tail lamp (TURN_LH_LAMP) may be turned on. In addition, although the second switch unit 54 corresponding to the engine wakeup is not shown, it may be turned on.

Similarly, when the operator inputs the emergency signal (HAZARD_WS) through the first switch unit 52, the logic input unit 51 may convert the corresponding emergency signal (HAZARD_WS) into a logical signal and transmit it to the control unit 10.

The control unit 10 may generate a control signal corresponding to the logical signal of the corresponding emergency signal (HAZARD_WS), and the logical output unit 53 may generate the corresponding physical output signal and transmit it to the second switch unit 54. . The control signal corresponding to the emergency signal (HAZARD_WS) may be a left and right tail lamp on signal, and the control unit 10 generates a corresponding control signal to generate a logic control unit through the output unit 16 and the LED output unit 17. ), And the logic output unit 53 may convert the corresponding control signal into a physical output signal and output it to the second switch unit 54.

Accordingly, in the example of FIG. 4, the second switch unit 54 corresponding to the left tail lamp (TURN_RH_LAMP) and the second switch unit 54 corresponding to the right tail lamp (TURN_LH_LAMP) may be turned on.

In addition, when the operator inputs the left lamp turn-on signal (TURN_RH_SW) through the first switch unit 52, the logic input unit 51 converts the left lamp turn-on signal (TURN_RH_SW) into a logical signal to the control unit 10 Can transmit.

The control unit 10 generates a control signal corresponding to the logic signal of the left lamp turn-on signal (TURN_RH_SW), and the logic output unit 53 generates the corresponding physical output signal and transmits it to the second switch unit 54 You can. The control signal corresponding to the left lamp turn-on signal (TURN_RH_SW) may be a left tail lamp on signal, and the control unit 10 generates a corresponding control signal to generate a logic control unit through the output unit 16 and the LED output unit 17 It can be output to (53), the logic output unit 53 will be able to convert the control signal to a physical output signal and output to the second switch unit 54.

Accordingly, in the example of FIG. 4, the second switch unit 54 corresponding to the left tail lamp (TURN_RH_LAMP) may be turned on.

In addition, when the operator inputs the right lamp turn-on signal (TURN_LH_SW) through the first switch unit 52, the logic input unit 51 converts the right lamp turn-on signal (TURN_LH_SW) into a logical signal to the control unit 10 Can transmit.

The control unit 10 generates a control signal corresponding to the logical signal of the corresponding right lamp turn-on signal (TURN_LH_SW), and the logical output unit 53 generates the corresponding physical output signal and transmits it to the second switch unit 54 You can. The control signal corresponding to the right lamp turn-on signal (TURN_LH_SW) may be a right tail lamp on signal, and the control unit 10 generates a corresponding control signal to generate a logic control unit through the output unit 16 and the LED output unit 17 It can be output to (53), the logic output unit 53 will be able to convert the control signal to a physical output signal and output to the second switch unit 54.

Accordingly, in the example of FIG. 4, the second switch unit 54 corresponding to the right lamp turn-on signal (TURN_LH_SW) may be turned on.

As such, the control unit 10 of the BCM 1 may generate a control signal corresponding to the logic signal received from the logic input unit 51 and output it to the logic output unit 53.

5 illustrates an example of a test signal received by the control unit 10 through the logic input unit 51 of FIG. 3.

As shown in the figure, it will be possible for an operator to automatically turn on and turn off signals in software form without directly turning on and turning off the first switch unit 52 through testing.

To this end, the turn-on / turn-off signal may be transmitted to the logic input unit 51 through an external communication line (not shown).

The control unit 10 may generate a control signal corresponding to the corresponding logic signal and output it through the output unit 16 and the LED output unit 17, and the logic output from the output unit 16 and the LED output unit 17 It can be provided to the unit 53 is as described above.

Although the embodiments according to the present invention have been described above, they are merely exemplary, and those skilled in the art will understand that various modifications and equivalent ranges of the embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

1: BCM 10: Control
11: Power supply 12: CAN communication
13: LIN communication unit 14: Digital input unit
15: analog input 16: output
17: LED output 5: test device
51: logic input unit 52, 54: switch unit
53: logic output

Claims (4)

A plurality of first switches for receiving a physical input signal associated with the vehicle body control module (BCM) of the vehicle from the operator performing the test;
A plurality of logic input units respectively corresponding to the plurality of first switches to convert the physical input signals into logical signals;
A plurality of logic output units that receive control signals corresponding to the logic signals and convert them into physical output signals; And
In response to each of the logic output unit, a plurality of second switch unit that is turned on and off according to the physical output signal,
The BCM,
A control unit generating a control signal corresponding to the logic signal;
An input unit that receives the logic signal from the logic input unit; And
A device for testing a BCM integrated with a control area network (CAN) including an output unit for outputting the control signal to the logic output unit.
delete The method of claim 1, wherein the BCM,
Device for testing the BCM integrated with CAN, further comprising a CAN communication unit for transmitting the control signal output through the output unit to the vehicle's control unit.
According to claim 3, The control unit,
A device for testing a BCM integrated with CAN, which controls to transmit the control signal through the CAN communication unit or to the logic output unit.

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