KR20160114851A - Vehicle network control system and vehicel network control method - Google Patents

Abstract

An embodiment of the present invention, disclosed are a vehicle network control system and a vehicle network control method capable of controlling a vehicle network to enable stable and accurate vehicle control by a vehicle controller.

Description

[0001] VEHICLE NETWORK CONTROL SYSTEM AND VEHICEL NETWORK CONTROL METHOD [0002]

The present embodiments relate to a vehicle network control system and a vehicle network control method.

Nowadays, in automobile technology, many parts for the intelligent functions such as steering, braking and suspension, as well as driving stability and driver's convenience are becoming more electronic, A plurality of vehicle controllers may be mounted to provide control functions.

As described above, a plurality of vehicle controllers mounted on a vehicle are connected to each other via a vehicle network communication line such as a bus line, and exchange various information necessary for vehicle control.

Therefore, each vehicle controller mounted on the vehicle can accurately perform its own vehicle control function only when it can accurately receive information from other vehicle controllers or other sensors.

However, when a trouble occurs in the vehicle controller or a problem such as disconnection or short-circuit occurs in a part of the communication wiring such as the bus line of the vehicle network, the signal transmission / reception between the vehicle controllers is not properly performed, Lt; / RTI >

On the other hand, the signal transmission between the vehicle controllers is performed in a broadcast manner through a bus line used as a transmission medium of the vehicle network.

As described above, signal transmission is performed in a broadcast manner through the bus line, so that when one of the vehicle controllers transmits a signal to the bus line, the other vehicle controllers can not transmit signals at the same time.

If any vehicle controller fails, the failed vehicle controller may experience an anomaly in which an abnormal signal is transmitted over the bus line for a long period of time.

While such anomalies are occurring, not only does the other vehicle controller not be able to transmit the signal at the necessary time, but even if it is transmitted, the signals transmitted from the two or more vehicle controllers collide in the bus line or the vehicle controller, May occur.

In other words, if an abnormal vehicle controller transmits an abnormal signal and occupies the bus line for a long time, there is a problem that signal transmission between the vehicle controller can not be normally performed.

As described above, a problem that may occur according to an abnormal operation of the vehicle controller may not only be a mere error of the vehicle control but may cause a serious anomaly in the operation of the vehicle, leading to serious vehicle accidents.

It is an object of the present embodiments to provide a vehicle network control system and a vehicle network control method capable of controlling a vehicle network so that vehicle control can be performed stably and accurately by the vehicle controller.

It is another object of the present invention to provide a vehicle control apparatus which monitors a vehicle controller that operates abnormally among a plurality of vehicle controllers belonging to a vehicle network and isolates the vehicle controller from the vehicle network, Control, and vehicle network control systems and vehicle network control methods that avoid problems throughout the vehicle network.

It is still another object of the present embodiments to provide a vehicle network control system capable of efficiently providing signal transmission between vehicle controllers and signal transmission between vehicle networks in the same vehicle network by configuring the vehicle controllers into a plurality of vehicle networks And vehicle network control methods.

In one aspect, the present embodiments provide a vehicle network comprising a bus network for transmitting and receiving signals between two or more vehicle controllers and two or more vehicle controllers, two or more relays for connecting two or more vehicle controllers to a bus line, And a vehicle network controller that controls connection with a bus line to each of the two or more vehicle controllers by controlling open or close for each of the relays.

In another aspect, the present embodiments provide a vehicle network controller, comprising: a first step of monitoring signals transmitted from each of two or more vehicle controllers to determine whether to isolate a vehicle network to each of the two or more vehicle controllers; And a second step of opening a relay for connecting the bus line to the vehicle controller determined as the vehicle network isolation target.

In yet another aspect, the embodiments may provide a vehicle network system including a first vehicle network and a second vehicle network.

In such a vehicle network system, a first vehicle network comprises a first bus line for signal transmission and reception between two or more first vehicle controllers and two or more first vehicle controllers, and a second bus line for transmitting and receiving signals between two or more first vehicle controllers and a first bus line Lt; RTI ID = 0.0 > 1 < / RTI >

In this vehicle network system, the second vehicle network includes a second bus line for signal transmission and reception between two or more second vehicle controllers and two or more second vehicle controllers, and a second bus line for transmitting and receiving signals between two or more second vehicle controllers and a second bus line Lt; RTI ID = 0.0 > a < / RTI > second vehicle network.

In such a vehicle network control system, a first vehicle network may be configured to control the opening or closing of each of the two or more first relays, And may further include a network controller.

In such a vehicle network control system, the second vehicle network may control the opening or closing of each of the at least two second relays, thereby controlling the second vehicle And may further include a network controller.

According to the embodiments, it is possible to provide a vehicle network control system and a vehicle network control method that can control the vehicle network so that the vehicle control can be stably and accurately performed by the vehicle controller.

In addition, according to the present embodiments, a vehicle controller that performs an abnormal operation among a plurality of vehicle controllers belonging to the vehicle network is monitored and isolated from the vehicle network, and the vehicle controller performing the abnormal operation performs the vehicle control , And vehicle network control systems and vehicle network control methods that prevent problems from occurring throughout the vehicle network.

Further, according to the embodiments, it is possible to provide a vehicle network control system and a vehicle control system capable of effectively providing signal transmission between vehicle controllers and signal transmission between vehicle networks in the same vehicle network, Network control method can be provided.

1 is a view schematically showing a vehicle network system.
Figs. 2 and 3 are diagrams showing an abnormal vehicle network phenomenon by an abnormal vehicle controller. Fig.
4 and 5 are block diagrams of a vehicle network control system according to the present embodiments.
6 is a flowchart of a vehicle network control method according to the present embodiments.
FIGS. 7 and 8 are flowcharts of a vehicle network control method according to the present embodiments.
9 is a view showing that one vehicle controller is isolated from the vehicle network according to the vehicle network control method according to the present embodiments.
10 is another configuration diagram of a vehicle network control system according to the present embodiments.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a view schematically showing a vehicle network system. Figs. 2 and 3 are diagrams showing an abnormal vehicle network phenomenon by an abnormal vehicle controller. Fig.

1, two or more vehicle controllers (VC # 1, ..., VC # n, n are natural numbers of 2 or more) for providing various control functions can be mounted on the vehicle.

Referring to Fig. 1, two or more vehicle controllers VC # 1, ..., VC #n mounted on a vehicle are connected to a bus line to exchange various information necessary for vehicle control.

Referring to FIG. 1, each vehicle controller installed in a vehicle must be able to accurately receive information that should be received from another vehicle controller in order to accurately perform its own vehicle control function.

However, the vehicle controller may fail, or a disconnection or a short circuit may occur in a part of the bus line of the vehicle network, the signal transmission / reception between the vehicle controllers may not be performed properly, or a wrong signal may be transmitted between the vehicle controllers.

Referring to FIG. 1, signal transmission between vehicle controllers VC # 1, VC # 2 and VC # 3 is performed in a broadcast manner through a bus line used as a transmission medium of the vehicle network.

As described above, signal transmission is performed in a broadcast manner through the bus line, so that when one of the vehicle controllers transmits a signal to the bus line, the other vehicle controllers can not transmit signals at the same time.

2, when a failure occurs in the vehicle controller VC # 1, the vehicle controller VC # 1 transmits an abnormal signal (Tx # 1) to the bus line BL for a long period of time Lt; / RTI >

While such an anomaly is occurring, not only can the other vehicle controller VC # 2 transmit the necessary signal Tx2 at a necessary time, but even if it transmits the signal Tx2 at a necessary point in time, It is inevitable that the signals (Tx # 1, Tx 2) transmitted from the two or more vehicle controllers collide with each other on the bus line or the vehicle controller.

Accordingly, the vehicle controller VC # 2 may not normally transmit the signal Tx2 to be transmitted to the vehicle controller VC # 1 or VC # 3 to the vehicle controller VC # 1 or VC # 3.

In other words, if an abnormal vehicle controller VC # 1 transmits an abnormal signal and occupies the bus line for a long time, there is a problem that signal transmission between the vehicle controller can not be performed.

3, when the vehicle controller VC # 1 does not perform the internal operation properly even though the occupancy rate of the bus line is not high, and transmits a signal Tx # 1 with an error frame to another vehicle controller VC # 2 , The vehicle controller VC # 2 receives the signal (Tx # 1) with the error frame to perform the vehicle control, which may cause a problem that the vehicle control error occurs.

A problem that may occur according to the abnormal operation of the vehicle controller exemplarily described with reference to Figs. 2 and 3 is not merely a simple error of the vehicle control but causes a serious abnormal phenomenon in the vehicle operation, leading to a serious vehicle accident It is possible.

Accordingly, the vehicle network control system according to the present embodiments monitors the presence or absence of an abnormal vehicle controller, detects abnormal vehicle controllers, if any, and isolates them from the vehicle network, thereby preventing a serious error of the vehicle control and a vehicle accident It is possible to prevent.

Hereinafter, a vehicle network control method and system according to embodiments will be described in detail with reference to FIGS. 4 to 10. FIG.

4 and 5 are block diagrams of a vehicle network control system according to the present embodiments.

FIG. 4 is a simplified view of a vehicle network control system according to the present embodiment. FIG. 5 shows a case where three vehicle controllers VC # 1, VC # 2 and VC # 3 are included. FIG. 2 is a diagram illustrating a vehicle network control system according to an embodiment of the present invention; FIG.

Referring to FIG. 4, the vehicle network control system according to the present embodiment includes at least two vehicle controllers (VC # 1, ..., VC #n, n are two or more natural numbers) 1, ..., VC #n) and a bus line (BL) for signal transmission / reception between the bus lines (VC # (RL # 1, ..., RL # n) for connecting the two relays RL # 1, ..., RL # (VC # 1, ..., VC # n) to the bus line (BL) by controlling the ON / OFF states of the vehicle controllers And a Vehicle Network Controller (VNC) for controlling the vehicle.

The switch element described in the present specification can be realized, for example, as a semiconductor switch element such as a relay, a transistor, or the like. Such a switch element may be realized by a single element or by a plurality of elements. Further, the switch element may be implemented as an internal circuit of an integrated circuit (IC). Hereinafter, for convenience of explanation, "switch element" is described as "relay".

The above-described vehicle network controller VNC monitors signals transmitted from each of the two or more vehicle controllers VC # 1, ..., VC # n, and transmits the signals to the two or more vehicle controllers VC # 1,. ., VC #n, and determines whether to isolate the vehicle network to each of the two or more vehicle controllers VC # 1, ..., VC # n according to the determination result.

The vehicle network controller VNC includes a relay for opening a relay for connection between the vehicle controller and the bus line BL determined as the vehicle network isolation target among the two or more vehicle controllers VC # 1, ..., VC # An open control signal can be output to the corresponding relay.

The vehicle network controller VNC described above may sequentially perform the vehicle controller monitoring process for each of the two or more vehicle controllers VC # 1, ..., VC # n at the start of the vehicle.

The above-described vehicle network controller VNC may sequentially perform the vehicle controller monitoring process for each of the two or more vehicle controllers VC # 1, ..., VC # n periodically or non-periodically during vehicle operation .

When the vehicle controller monitoring process is sequentially performed for each of the two or more vehicle controllers (VC # 1, ..., VC # n) at the start-up of the vehicle or during the vehicle operation, (For example, VC # 1? VC # 2? ...? VC #n).

The above-described vehicle network controller VNC sequentially performs the vehicle controller monitoring process for each of the two or more vehicle controllers VC # 1, ..., VC # n when the vehicle is started or during vehicle operation, It is possible to isolate the corresponding vehicle controller from the vehicle network by opening the corresponding relay and controlling the corresponding vehicle controller so as not to be connected to the bus line BL.

For example, the vehicle network controller VNC checks the signal transmitted from the VC # 1 when the bus occupation rate exceeds the predetermined normal range by the signal transmitted to the VC # 1, or when the VC # It is determined that there is an abnormality in the VC # 1, the VC # 1 is determined as the vehicle network isolation target, and VC # 1 is isolated in the vehicle network, that is, VC # 1 The relay RL # 1 is opened by outputting the relay open control signal to the relay RL # 1 that connects the VC # 1 and the bus line BL so that the relay RL # 1 is not connected to the bus line BL .

The vehicle network controller VNC described above detects an error frame from a signal transmitted from the vehicle controller at the time of vehicle start or vehicle operation and maintains the closed state of the relay in accordance with the detection result of the error frame, May be outputted as a relay.

Alternatively, when the vehicle network controller VNC performs the vehicle controller monitoring process on any one of the two or more vehicle controllers VC # 1, ..., VC #n at vehicle start-up, A relay close control signal for closing the relay for connection between the vehicle controller and the bus line BL is output to the corresponding relay and the seed signal containing the seed information is transmitted to the corresponding vehicle controller And when the vehicle controller receives the key signal including the key information generated by the vehicle controller using the seed information from the corresponding vehicle controller, inversely calculates the seed information from the key information included in the received key signal, The seed information obtained by inverse calculation of the information is compared with the seed information transmitted to the corresponding vehicle controller, And if it does not match, it is determined that the vehicle controller is abnormal and the relay open control signal (Relay Open Control Signal) for opening the relay can be output to the relay.

The vehicle network controller VNC described above carries out a vehicle controller monitoring process for any one of two or more vehicle controllers VC # 1, ..., VC #n periodically or non-periodically during vehicle operation A seed signal including seed information is transmitted to a corresponding vehicle controller connected to the bus line BL through a corresponding relay in a closed state, and a key signal including key information generated by the vehicle controller using seed information Calculates inversely the seed information from the key information included in the received key signal, compares the seed information obtained by inverse calculation of the key information with the seed information transmitted to the corresponding vehicle controller, If it is determined that there is a match, the vehicle controller determines that there is no abnormality, maintains the closed state of the relay, As a result, if the vehicle controller does not match, it is determined that the vehicle controller is abnormal, and the relay open control signal for opening the relay can be output to the corresponding relay.

If the seed information obtained by inversely calculating the key information is identical to the seed information transmitted to the vehicle controller as a result of the comparison, the vehicle network controller (VNC) It is also possible to maintain the closed state of the relay in accordance with the detection result of the error frame or to output the relay open control signal for opening the relay to the relay.

Alternatively, the vehicle network controller VNC described above monitors the bus line occupancy (or bus line occupation time) by signal transmission of each of the two or more vehicle controllers VC # 1, ..., VC # When the line occupancy exceeds a predetermined normal range, the corresponding relay for connecting the vehicle controller and the bus line BL is opened, so that the vehicle controller can be isolated from the vehicle network.

The above-mentioned two or more relays RL # 1, ..., RL #n may be separately provided outside the vehicle network controller VNC or may be implemented inside the vehicle network controller VNC.

The above vehicle network control system may further include at least one other vehicle controller that is not connected to the bus line BL to which two or more vehicle controllers VC # 1, ..., VC # n are connected.

Vehicle controllers connected to the same bus line are said to belong to the same vehicle network.

As such, when the vehicle network is two or more, the vehicle network controller (VNC) includes a gateway module for transmitting and receiving signals between two or more vehicle controllers belonging to the first vehicle network and at least one other vehicle controller belonging to the second vehicle network can do.

Thus, vehicle controllers belonging to the same vehicle network can exchange signals with each other via the same bus line, and vehicle controllers belonging to different vehicle networks can send and receive signals through vehicle network controllers acting as gateways.

In this embodiment, the vehicle controller may be an electronic control unit (ECU) that performs at least one of vehicle control such as steering, braking, and suspension of the vehicle .

In the present embodiments, the vehicle network is configured as an in-vehicle communication network, and may be configured and operated in accordance with, for example, a CAN (Controller Area Network) standard.

In this case, each vehicle controller may include a CAN driver and a microcontroller, and a vehicle network controller (VNC) may also include a CAN driver and a microcontroller.

In the present embodiments, the bus line BL may be a CAN-High wiring (BL-HIGH) and a CAN-Low wiring (BL-LOW).

The voltage levels at these CAN-High wiring (BL-HIGH) and CAN-Low wiring (BL-LOW) are different.

The waveforms of signals transmitted from CAN-High wiring (BL-HIGH) and CAN-Low wiring (BL-LOW) are opposite and synchronized.

The vehicle network control system described above will be described by way of example with reference to Fig.

Referring to FIG. 5, as described above, the bus line BL may be a CAN-High wiring (BL-HIGH) and a CAN-Low wiring (BL-LOW).

5, vehicle controller VC # 1 is connected to one end (A1 node, B1 node) of relay RL # 1 via CAN-High wiring BL-HIGH and CAN-Low wiring BL- do.

Vehicle controller VC # 2 is connected to one end (A2 node, B2 node) of relay RL # 2 via CAN-High wiring (BL-HIGH) and CAN-Low wiring (BL-LOW).

Vehicle controller VC # 3 is connected to one end (A3 node, B3 node) of relay RL # 3 via CAN-High wiring (BL-HIGH) and CAN-Low wiring (BL-LOW).

5, the other end (A1 'node, B1' node) of the relay RL # 1, the other end (A2 'node, B2' node) of the relay RL # 2, , B3 'node) are connected via CAN-High wiring (BL-HIGH) and CAN-Low wiring (BL-LOW).

Referring to FIG. 5, the vehicle network controller VNC may be connected to the control node C1 of the relay RL # 1 via the control signal line CL # 1.

The vehicle network controller VNC can output a control signal (relay open control signal or relay close control signal) to the control node C1 of the relay RL # 1 through the control signal line CL # 1.

Referring to FIG. 5, the vehicle network controller VNC may be connected to the control node C2 of the relay RL # 2 via the control signal line CL # 2.

The vehicle network controller VNC can output a control signal (relay open control signal or relay close control signal) to the control node C2 of the relay RL # 2 through the control signal line CL # 2.

Referring to FIG. 5, the vehicle network controller VNC may be connected to the control node C3 of the relay RL # 3 via the control signal line CL # 3.

The vehicle network controller VNC can output a control signal (relay open control signal or relay close control signal) to the control node C3 of the relay RL # 3 via the control signal line CL # 3.

For example, when the vehicle network controller VNC outputs a relay close control signal to the control node C1 of the relay RL # 1 via the control signal line CL # 1, the contact terminal D1 of the relay RL # The contact point E1 of the relay RL # 1 is in contact with the node B1 and the node B1 'to electrically connect the node B1 and the node B1' It does.

When the vehicle network controller VNC outputs a relay close control signal to the control node C1 of the relay RL # 1 via the control signal line CL # 1, the contact terminal D1 of the relay RL # And the contact terminal E1 of the relay RL # 1 is electrically disconnected from the node B1 and the node B1 'and is electrically disconnected from the node B1' and the node B1 ' .

6 is a flowchart of a vehicle network control method according to the present embodiments.

6, the vehicle network control method according to the present embodiment is characterized in that the vehicle network controller VNC monitors the signals transmitted from each of the two or more vehicle controllers VC # 1, ..., VC # (S710) of determining whether to isolate the vehicle network to each of the two or more vehicle controllers (VC # 1, ..., VC #n) A step of opening a relay for connecting the controller and the bus line BL (S720), and the like.

Referring to FIG. 6, the vehicle network isolation object determination step S710 and the vehicle network isolation processing step S720 may be repeatedly performed for each vehicle controller.

That is, the vehicle network isolation object determination step S710 is performed for the VC # 1, and the vehicle network isolation processing step S720 is performed if the VC # 1 is determined as the vehicle network isolation object. Thereafter, the vehicle network isolation object determination step S710 is performed for the VC # 2, and the vehicle network isolation processing step S720 is performed if the VC # 2 is determined as the vehicle network isolation object. Thereafter, the vehicle network isolation object determination step S710 is performed for the VC # 3, and the vehicle network isolation processing step S720 is performed if the VC # 3 is determined as the vehicle network isolation object.

The vehicle network isolation target determination step S710 includes the steps of: the vehicle network controller VNC transmitting seed information to the vehicle controller to be monitored; and the vehicle network controller VNC generating The vehicle network controller (VNC) decrypting the seed information from the key information received from the vehicle controller, and the vehicle network controller (VNC) receiving the decrypted seed information from the key information And comparing the transmitted seed information with the transmitted seed information; and if the vehicle network controller (VNC) does not match the result of the comparison, determining the vehicle controller as a vehicle network isolation target, and the like.

Alternatively, the vehicle network isolation object determination step S710 may include the steps of: the vehicle network controller VNC monitoring the bus line occupancy (or bus line occupancy time) by signal transmission of the vehicle controller to be monitored; If the controller VNC exceeds the predetermined normal range of the bus line occupancy, determining the vehicle controller as the vehicle network isolation target, and the like.

FIGS. 7 and 8 are flowcharts of a vehicle network control method according to the present embodiments.

FIG. 7 is a flowchart of a vehicle network control method according to vehicle start-up, and FIG. 8 is a flowchart of a vehicle network control method that is periodically or aperiodically performed during vehicle operation. 7 and 8 show a vehicle network control method for the vehicle controller VC # 1 for convenience of explanation.

Referring to Fig. 7, the vehicle network controller VNC detects the vehicle start (S701).

The vehicle network controller VNC sequentially carries out the vehicle controller monitoring process to each of the two or more vehicle controllers VC # 1, ..., VC # n in accordance with the vehicle start detection.

Assuming that the vehicle network controller VNC performs the vehicle controller monitoring process for the vehicle controller VC # 1, the procedure of the vehicle controller monitoring process for the vehicle controller VC # 1 will be described below with reference to FIG. 7 do.

7, the vehicle network controller VNC transmits a relay close control signal for closing the relay RL # 1 for connection between the vehicle controller VC # 1 and the bus line BL to the relay RL # 1 (Output) (S702).

Thereafter, the vehicle network controller VNC transmits the seed signal containing the seed information to the vehicle controller VC # 1 (S703).

Accordingly, the vehicle controller VC # 1 generates key information according to a predefined key calculation formula using the seed information included in the seed signal received from the vehicle network controller (VNC) (S704).

The vehicle controller VC # 1 transmits the key signal including the generated key information to the vehicle network controller VNC (S705).

When the vehicle controller VC # 1 receives the key signal including the key information generated by the vehicle controller VC # 1 using the seed information from the vehicle controller VC # 1, the vehicle network controller VNC obtains seed information (S706).

At this time, the vehicle network controller VNC obtains the seed information from the key information by using the inverse calculation formula of the key calculation equation used by the vehicle controller VC # 1 to obtain the key information from the seed information.

The vehicle network controller VNC compares the seed information obtained from the key information with the seed information transmitted to the vehicle controller VC # 1 using a predetermined inverse calculation formula (S707).

When the seed information obtained from the key information and the seed information transmitted to the vehicle controller VC # 1 coincide with each other using the inverse calculation formula, the vehicle network controller VNC determines that the vehicle controller VC # 1 has no abnormality, And the closed state is maintained (S708).

If the seed information obtained from the key information and the seed information transmitted to the vehicle controller VC # 1 do not match using the inverse calculation formula, the vehicle network controller VNC determines that the vehicle controller VC # 1 is abnormal, 1 to the relay RL # 1 (S709).

As a result, the vehicle controller VC # 1 is disconnected from the bus line BL and isolated from the vehicle network.

This completes the vehicle controller monitoring process for the vehicle controller VC # 1. The vehicle controller monitoring process procedure (S702 to S709) for the vehicle controller (e.g., VC # 2) in the next step is performed again.

Through this process, after completing the vehicle controller monitoring process for all the vehicle controllers VC # 1, ..., VC #n, the abnormal vehicle controller is all isolated in the vehicle network, The normal vehicle networking is included in the network, and based on the normal vehicle networking by the normal vehicle controller, the vehicle control can be normally performed and the vehicle operation can proceed.

On the other hand, during vehicle operation, a vehicle controller monitoring process similar to that described above may proceed. This will be described with reference to FIG.

Referring to FIG. 8, the vehicle network controller VNC detects occurrence of a vehicle controller monitoring event periodically or non-periodically during vehicle operation (S801).

Accordingly, the vehicle network controller VNC sequentially carries out the vehicle controller monitoring process for each of the vehicle controllers VC # 1, ..., VC # n connected to the bus line BL.

In the following, a procedure for proceeding the vehicle controller monitoring process for the vehicle controller VC # 1 among all of the vehicle controllers VC # 1, ..., VC #n connected to the bus line BL will be described with reference to FIG. 8 .

Referring to FIG. 8, the vehicle network controller VNC transmits a seed signal including seed information to the vehicle controller VC # 1 connected to the bus line BL through the closed relay RL # 1 (S802).

Accordingly, the vehicle controller VC # 1 generates the key information according to the predefined key calculation formula using the seed information included in the seed signal received from the vehicle network controller (VNC) (S083).

The vehicle controller VC # 1 transmits a key signal including the generated key information to the vehicle network controller VNC (S804).

When the vehicle controller VC # 1 receives the key signal including the key information generated by the vehicle controller VC # 1 using the seed information from the vehicle controller VC # 1, the vehicle network controller VNC obtains seed information (S805).

At this time, the vehicle network controller VNC obtains the seed information from the key information by using the inverse calculation formula of the key calculation equation used by the vehicle controller VC # 1 to obtain the key information from the seed information.

The vehicle network controller VNC compares the seed information obtained from the key information with the seed information transmitted to the vehicle controller VC # 1 using a predetermined inverse calculation formula (S806).

When the seed information obtained from the key information and the seed information transmitted to the vehicle controller VC # 1 coincide with each other using the inverse calculation formula, the vehicle network controller VNC determines that the vehicle controller VC # 1 has no abnormality, And the closed state is maintained (S807).

If the seed information obtained from the key information and the seed information transmitted to the vehicle controller VC # 1 do not match using the inverse calculation formula, the vehicle network controller VNC determines that the vehicle controller VC # 1 is abnormal, 1 to the relay RL # 1 (S808).

As a result, the vehicle controller VC # 1 is disconnected from the bus line BL and isolated from the vehicle network.

This completes the vehicle controller monitoring process for the vehicle controller VC # 1. The vehicle controller monitoring process procedure (S082 to S808) for the next sequential vehicle controller (e.g., VC # 2) is performed again.

Through this process, after completing the vehicle controller monitoring process for all the vehicle controllers VC # 1, ..., VC #n, the abnormal vehicle controller is all isolated in the vehicle network, The normal vehicle networking is included in the network, and based on the normal vehicle networking by the normal vehicle controller, the vehicle control can be normally performed and the vehicle operation can be continued.

On the other hand, referring to FIG. 8, if the seed information obtained from the key information and the seed information transmitted to the vehicle controller VC # 1 do not coincide with each other using the inverse calculation formula as a result of the comparison in step S806 , An error frame is detected from the signal transmitted from the vehicle controller VC # 1, and it is determined whether or not an error frame is detected (S809).

If it is determined that an error frame is not detected, the vehicle network controller VNC maintains the closed state of the relay RL # 1 (S810).

If it is determined that an error frame is detected, the vehicle network controller VNC can transmit a relay open control signal for opening the relay RL # 1 to the relay RL # 1 (S811).

9 is a diagram showing that one vehicle controller VC # 1 is isolated from the vehicle network according to the vehicle network control method according to the present embodiments.

9 is determined to be an object to isolate the vehicle controller VC # 1 to the vehicle network according to the vehicle network control method described above with reference to Fig. 7 or Fig. 8, The vehicle network controller VNC transmits a relay open control signal to the corresponding relay RL # 1, and the relay RL # 1 is opened.

Referring to Fig. 9, by opening the relay RL # 1, the vehicle controller VC # 1 is disconnected from the bus line BL and isolated from the vehicle network.

Thus, the vehicle controller VC # 1 can not transmit a signal to the bus line BL.

Therefore, the bus line BL is in a normal signal transmission state.

10 is another configuration diagram of a vehicle network control system according to the present embodiments.

10, the vehicle network control system according to the present embodiment includes two or more first vehicle controllers VC # 1, ..., VC #n and two or more first vehicle controllers VC # 1, ..., VC #n) and a first bus line (BL A) for transmitting and receiving signals between two or more first vehicle controllers (VC # 1, ..., VC # , A first vehicle network (VN 1) comprising at least two first relays (RL # 1, ..., RL # n) for connection between two or more second vehicle controllers (VC # 1, ..., RL # A second bus line BL B for signal transmission and reception between two or more second vehicle controllers VC # 1 to VC #m, 1, ..., RL #m) for connection between the first bus line (BL # 1, ..., VC #m) and the second bus line (BL B) 2).

10, the first vehicle network VN 1 controls opening or closing of each of the two or more first relays RL # 1, ..., RL # n, (VNC) via the gateway function of the first vehicle network controller VNC which controls the connection with the first bus line BLA for each of the first bus lines (VC # 1, ..., VC # n) A).

The second vehicle network VN 2 controls the opening or closing of the two or more second relays RL # 1, ..., RL #m, respectively, so that two or more second vehicle controllers VC # 1, ..., RL # And a second vehicle network controller (VNC B) for controlling the connection to the first bus line (BL A) for each of the first bus lines (BL #, .., VC # m).

In FIG. 10, although the vehicle network control system according to the present embodiments is shown as composed of only two vehicle networks VN A and VN B, this is for convenience of description only, have.

According to the embodiments, it is possible to provide a vehicle network control system and a vehicle network control method that can control the vehicle network so that the vehicle control can be stably and accurately performed by the vehicle controller.

In addition, according to the present embodiments, a vehicle controller that performs an abnormal operation among a plurality of vehicle controllers belonging to the vehicle network is monitored and isolated from the vehicle network, and the vehicle controller performing the abnormal operation performs the vehicle control , And vehicle network control systems and vehicle network control methods that prevent problems from occurring throughout the vehicle network.

Further, according to the embodiments, the vehicle controllers can be configured as a plurality of vehicle networks to provide signal transmission between the vehicle controllers in the same vehicle network, as well as to provide, via the gateway function of the vehicle network controller (VNC) It is possible to provide a vehicle network control system and a vehicle network control method that can effectively provide signal transmission between the vehicle and the vehicle.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program can be stored in a computer-readable storage medium, readable and executed by a computer, thereby realizing an embodiment of the present invention. As a storage medium of the computer program, a magnetic recording medium, an optical recording medium, or the like can be included.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (15)

Two or more vehicle controllers;
And a bus line for signal transmission / reception between the two or more vehicle controllers;
At least two switch elements for connecting said at least two vehicle controllers to a bus line; And
And a vehicle network controller for controlling connection to a bus line for each of the two or more vehicle controllers by controlling open or close of each of the at least two switch elements. The method according to claim 1,
The vehicle network controller includes:
Monitor signals transmitted from each of the two or more vehicle controllers, determine whether to isolate a vehicle network for each of the two or more vehicle controllers according to a monitoring result,
A vehicle network control system for outputting a switch element open control signal for opening a switch element for connection between a bus controller and a bus controller determined as a vehicle network isolation target to a corresponding switch element. The method according to claim 1,
The vehicle network controller includes:
At the start of the vehicle, or periodically or non-periodically during vehicle operation,
Performing a vehicle controller monitoring process sequentially for each of the two or more vehicle controllers,
When the vehicle controller that is determined to be abnormal is sequentially opened, the corresponding switch element is opened so that the vehicle controller is not connected to the bus line, so that the vehicle controller is isolated from the vehicle network Let the vehicle network control system. The method of claim 3,
The vehicle network controller includes:
When performing a vehicle controller monitoring process for a vehicle controller of any one of the two or more vehicle controllers,
After transmitting a switch element close control signal for closing a switch element for connection between the vehicle controller and the bus line to the switch element, transmitting a seed signal including seed information to the vehicle controller,
When the vehicle controller receives the key signal including the key information generated by using the seed information from the vehicle controller,
Calculates inversely the seed information from the key information included in the received key signal,
Compares seed information inversely calculated and seed information transmitted to the vehicle controller,
The vehicle controller determines that there is no abnormality and maintains the closed state of the switch element,
And outputs a switch element open control signal for causing the vehicle controller to determine that there is an abnormality and to open the switch element if the vehicle condition does not match. The method of claim 3,
The vehicle network controller includes:
When performing a vehicle controller monitoring process for any one of the two or more vehicle controllers, periodically or non-periodically during vehicle operation,
A seed signal including seed information is transmitted to the vehicle controller connected to the bus line through a switch element in a closed state,
When the vehicle controller receives the key signal including the key information generated by using the seed information from the vehicle controller,
Calculates inversely the seed information from the key information included in the received key signal,
Compares seed information inversely calculated and seed information transmitted to the vehicle controller,
If it is determined that there is a match, the vehicle controller determines that there is no abnormality and maintains the closed state of the switch element,
And outputs a switch element open control signal for causing the vehicle controller to determine that there is an abnormality and to open the switch element, if the result of the comparison is no match. 6. The method of claim 5,
The vehicle network controller includes:
And when the result of the comparison is no match, detecting an error frame from a signal transmitted from the vehicle controller, maintaining the closed state of the switch element when an error frame is detected, And transmits the switch element open control signal for opening the element to the switch element. The method according to claim 1,
The vehicle network controller includes:
Monitoring the bus line occupancy by signal transmission of each of the two or more vehicle controllers,
And when the bus line occupancy exceeds a predetermined normal range, opens the switch element for connecting the vehicle controller and the bus line, thereby isolating the vehicle controller from the vehicle network. The method according to claim 1,
Wherein the at least two switch elements are included in the vehicle network controller. The method according to claim 1,
And at least one other vehicle controller not connected to the bus line to which the at least two vehicle controllers are connected,
The vehicle network controller includes:
And a gateway module for transmitting and receiving signals between the at least one vehicle controller and the at least one other vehicle controller. The method according to claim 1,
The vehicle controller includes:
A vehicle network control system, which is an electronic control unit (ECU) that performs at least one of steering, braking, and suspension of the vehicle. A first step of the vehicle network controller monitoring signals transmitted from the two or more vehicle controllers to the bus line to determine whether to isolate the vehicle network to each of the two or more vehicle controllers; And
Wherein the vehicle network controller includes a second step of opening a switch controller that connects the bus line and a vehicle controller determined as a vehicle network isolation target. 12. The method of claim 11,
Wherein the first step and the second step are repeatedly performed for each vehicle controller. 13. The method of claim 12,
In the first step,
Transmitting seed information to a vehicle controller to be monitored;
Receiving key information generated by seed information from the vehicle controller;
Decrypting the seed information from the received key information;
Comparing the inversely calculated seed information with the transmitted seed information; And
If the result of the comparison is no match, the step of determining the vehicle controller as a vehicle network isolation target
The vehicle network control method comprising: 13. The method of claim 12,
In the first step,
Monitoring the bus line occupancy by signal transmission of the vehicle controller to be monitored: and
If the bus line occupancy exceeds a predetermined normal range, determining the vehicle controller as a vehicle network isolation target
The vehicle network control method comprising: A first bus line for transmitting and receiving signals between the at least two first vehicle controllers and the at least two first vehicle controllers and at least two first switch elements for connecting between the at least two first vehicle controllers and the first bus line, A first vehicle network comprising; And
A second bus line for signal transmission and reception between the two or more second vehicle controllers and two or more second switch elements for connection between the two or more second vehicle controllers and the second bus line, And a second vehicle network,
The first vehicle network comprising:
Further comprising a first vehicle network controller for controlling connection to the first bus line for each of the at least two first vehicle controllers by controlling open or close for each of the at least two first switch elements,
The second vehicle network comprising:
Further comprising a second vehicle network controller for controlling connection to the second bus line for each of the at least two second vehicle controllers by controlling open or close of each of the at least two second switch elements system.

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