KR20190133137A - Apparatus for diagnosing sudden unintended acceleration of a vehicle - Google Patents

Abstract

According to the present invention, disclosed is a device for diagnosing a sudden unintended acceleration of a vehicle. The device for diagnosing a sudden unintended acceleration of a vehicle of the present invention comprises: an information collecting part for receiving vehicle information through in-vehicle communication from a plurality of electronic control units (ECUs) mounted on a vehicle; a sudden unintended acceleration determining part for determining a sudden unintended acceleration on the basis of the vehicle information received from the information collecting part; and a recording part for recording vehicle information at the time of occurrence of the sudden unintended acceleration when the sudden unintended acceleration is determined by the sudden unintended acceleration determining part. Therefore, the present invention is capable of effectively clarifying, after a sudden unintended acceleration accident, whether the accident was caused by a driver′s mistake or a vehicle defect.

Description

Vehicle Rapid Diagnosis Device {APPARATUS FOR DIAGNOSING SUDDEN UNINTENDED ACCELERATION OF A VEHICLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle sudden diagnosis apparatus, and more particularly, to a vehicle sudden diagnosis apparatus for recording vehicle state information at the time of a sudden start using a vehicle network router.

In general, Sudden Unintended Acceleration (SUA) refers to a phenomenon in which a car accelerates regardless of the driver's will. This sudden start can occur both at rest, at low speeds, and at constant speeds, usually involving the inability of the braking system. Whether this is the result of a driver's immaturity or a mechanical or electrical defect in a car is always a matter of debate.

Meanwhile, in the related art, when a specific failure situation such as in-vehicle communication failure, error frame generation, collision occurrence, and warning light does not occur, the vehicle is diagnosed using a gateway. That is, conventionally, a plurality of ECUs (Electronic Control Units) mounted in a vehicle and an internal diagnosis unit for transmitting a failure code request message (I-BOX DTC Read Request) for diagnosis when a warning light of the vehicle is turned on are provided to the plurality of ECUs. Connects the internal diagnostics and the CAN communication of the plurality of ECUs, and stores the same number in a buffer in the same period in the DTC (Diagnostic Trouble Code) received from each ECU in the same period, and monitors the periodic transmission and reception data to malfunction or When the error frame is generated, including the gateway to acquire the data before and after the occurrence time and provide it to the internal diagnosis, the gateway only performs the DTC recording action responded from the controller (ECU) only when the specific failure situation occurs, There is a problem that it is difficult to record the vehicle status associated with the sudden start time without judging the expected situation.

Background art of the present invention is the Republic of Korea Patent Publication No. 10-2017-0033531 (published: March 27, 2017), "Developing record storage and automatic deceleration device and method for the vehicle sudden start" and its method.

According to an aspect of the present invention, the present invention was devised to improve the above problems, and an object of the present invention is to provide a vehicle sudden diagnosis apparatus for recording vehicle status information at the time of sudden start using a vehicle network router. .

According to an aspect of the present invention, there is provided a vehicle sudden diagnosis apparatus including: an information collecting unit configured to receive vehicle information through in-vehicle communication from a plurality of ECUs (Electronic Control Units) mounted on a vehicle; A sudden oscillation determination unit for determining a sudden start based on the vehicle information received from the information collecting unit; And a recording unit configured to record the vehicle information at the time of occurrence of the sudden oscillation when the sudden oscillation determination is made by the sudden oscillation determination unit.

In the present invention, the information collecting unit, a message processing unit for receiving the in-vehicle communication message; And a message refiner for acquiring a specific signal in the message received by the message processor, wherein the sudden oscillation determiner determines the sudden oscillation based on the purified data input from the message refiner.

In the present invention, the sudden oscillation judging unit, when the speed increase in the first speed change amount monitoring interval is greater than the first set value, characterized in that it determines that the first sudden start determination condition is satisfied.

In the present invention, the sudden oscillation determination unit, the speed increase in the first speed change monitoring interval is greater than the first set value, the accelerator pedal state determined by the vehicle information received from the information collector is not a pulley (Fully) Alternatively, when the accelerator pedal state is Off, it is determined that the first sudden oscillation determination condition is satisfied.

In the present invention, the sudden oscillation determination unit, when the speed increase amount is greater than the first set value within the first speed change monitoring interval, and the gear state determined through the vehicle information received from the information collecting unit is a stop or neutral state, 1 Characterized in that it is determined that the condition for determining the sudden start oscillation.

In the present invention, after determining that the sudden oscillation determination unit satisfies the first sudden oscillation determination condition, when the speed increase amount is greater than the speed increase amount in the first speed change amount monitoring interval in the second speed change monitoring interval, the second sudden oscillation It is characterized by judging that the judgment condition is satisfied.

In the present invention, the information collecting unit, at least one of brake pedal operation, engine status, RPM, speed, gear state, GPS position information and collision information before determining that the second sudden start determination condition is satisfied in the sudden start determination unit It is characterized by monitoring the vehicle information including the above.

In the present invention, the recording unit, characterized in that for recording the vehicle information collected by the information collecting unit before determining that the second sudden start determination condition is satisfied.

According to an embodiment of the present invention, the vehicle sudden diagnosis diagnosis apparatus records vehicle state information at the time of the sudden start using a vehicle network router, thereby more clearly identifying the cause of the driver's mistake or the vehicle defect after the sudden start accident. It is effective to make it possible,

In addition, it is possible to predict a defective part through a vehicle state that does not respond to a driver's operation such as stopping the vehicle in a sudden start situation, thereby improving the vehicle reliability of the consumer.

1 is a block diagram showing a vehicle sudden diagnosis diagnosis apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a vehicle sudden diagnosis method according to an embodiment of the present invention.
3 is a diagram for describing a first sudden start determination time of an apparatus and a method for diagnosing a vehicle sudden start according to an embodiment of the present invention.
4 is a diagram for describing a second sudden start determination time point of the apparatus and method for diagnosing a vehicle sudden start according to an embodiment of the present invention.
FIG. 5 is a simplified diagram for describing a sudden start determination time of a vehicle sudden start diagnosis apparatus and method according to an exemplary embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described a vehicle acceleration diagnosis apparatus according to an embodiment of the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a block diagram illustrating a vehicle sudden diagnosis diagnosis apparatus according to an embodiment of the present invention, and FIG. 3 is a view for explaining a primary sudden start determination time of an apparatus and method for diagnosing a vehicle according to an embodiment of the present invention. 4 is a view for explaining a second sudden start determination time of the vehicle sudden start diagnosis apparatus and method according to an embodiment of the present invention, Figure 5 is a vehicle sudden start diagnosis apparatus and method according to an embodiment of the present invention As a simplified diagram for explaining the timing of the sudden start determination, a vehicle rapid start diagnosis apparatus will be described with reference to the following.

As shown in FIG. 1, the vehicle sudden oscillation diagnostic apparatus according to an exemplary embodiment of the present invention includes an information collecting unit 20 and a control unit 21, and the information collecting unit 20 is mounted in a vehicle. The vehicle information may be received from the ECU (Electronic control Unit) 1 through the in-vehicle communication and provided to the control unit 21. In addition, the control unit 21 may provide the received vehicle information to the external diagnostic apparatus 3, and in this embodiment, the information collecting unit 20 and the control unit 21 are vehicle CAN (Controller Area Network) communication routers. (2).

That is, the present embodiment diagnoses vehicle sudden start using the vehicle CAN communication router 2, and includes vehicle information such as an engine state, a transmission state, a collision state, etc. from a plurality of ECUs 1 mounted on a vehicle constituted of a CAN network. Can be received through the CAN communication, and the sudden start is determined from the received information, and vehicle information on the vehicle state can be recorded at the time of the sudden start. In addition, the recorded information can be obtained through the external diagnostic device 3 to confirm whether or not the actual sudden oscillation has occurred.

The plurality of ECUs 1 may include, for example, an engine control unit (EMS) related to a power train, a transmission control unit (TCU), an airbag control unit (ACU), and the like. It may include a multimedia-related GPS control unit.

That is, the vehicle CAN communication router 2 may collect different data input from the plurality of ECUs 1. In this case, although the CAN communication is described as an example in the vehicle network, the present invention is not limited thereto and may include all in-vehicle communication.

The information collector 20 includes a message processor 210 for receiving an in-vehicle communication message, and a message refiner 220 for acquiring a specific signal in the message received by the message processor 210.

That is, the message processor 210 may receive the in-vehicle CAN communication message from the plurality of ECUs 1 and transmit the received CAN communication message to the message refiner 220. In this case, the message refiner 220 may acquire a specific signal from the in-vehicle CAN communication messages collected from the plurality of ECUs 1 by the message processor 210.

Accordingly, the sudden oscillation determination unit 230 may determine the sudden oscillation based on the purified data input from the message refiner 220.

That is, the controller 21 may include the sudden oscillation determination unit 230 and the recording unit 240 to determine the sudden start based on the vehicle information received from the information collecting unit 20 and record the vehicle information at the time of the sudden start generation. have.

In other words, the sudden start determination unit 230 determines the sudden start based on the vehicle information received from the information collecting unit 20, and the recording unit 240 determines the sudden start by the sudden start determination unit 230, the sudden start generation occurs. Vehicle information can be recorded at this time.

On the other hand, in the present embodiment, it is possible to determine the sudden start, the vehicle information is monitored for a predetermined time after the first sudden start judgment, and if the second sudden start judgment, it is possible to process and record the monitored vehicle information before the second sudden start judgment.

Referring to FIG. 3, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) −V。) within the first speed change monitoring interval ((T。 + t) −T。). If it is more than one set value, it may be determined that the first sudden oscillation determination condition is satisfied.

In addition, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) -V。) within the first speed change monitoring period ((T。 + t) -T。) is greater than or equal to the first set value. When the accelerator pedal state determined by the vehicle information received from the information collecting unit 20 is not full or the accelerator pedal state is off, it may be determined that the first sudden oscillation determination condition is satisfied.

In addition, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) -V。) within the first speed change monitoring period ((T。 + t) -T。) is greater than or equal to the first set value. When the gear state determined based on the vehicle information received from the information collecting unit 20 is a stop or neutral state, it may be determined that the first sudden start and stop condition is satisfied.

After determining that the first sudden start determination condition is satisfied, the sudden start determination unit 230 may determine whether the second sudden start determination condition is satisfied.

Meanwhile, referring to FIG. 4, after the sudden oscillation determination unit 230 determines that the first sudden oscillation determination condition has been satisfied, the speed within the second speed change monitoring interval ((T。 + t) −T。) is determined. When the increase amount is equal to or greater than the speed increase amount in the first speed change monitoring period, it may be determined that the second sudden oscillation determination condition is satisfied.

However, before the information collection unit 20 determines that the second sudden start determination condition is satisfied by the sudden start determination unit 230, whether the brake pedal is operated, engine state, RPM, speed, gear state, GPS position information, and collision information Vehicle information including at least one of the can be monitored. That is, the information collecting unit 20 may receive vehicle information from the plurality of ECUs 1 before the secondary sudden start determination and monitor the vehicle information in the sudden start state.

That is, even when the speed in the second speed change monitoring interval ((T。 + t) -T。) reaches the sudden start secondary determination set speed (Vc₂) (when the amount is smaller than Vc₂) May be applicable), and determine the final sudden oscillation through the sudden oscillation determination unit 230 to process the vehicle information monitored by the information collection unit 20 and record it in the storage device through the recording unit 240.

Therefore, as shown in FIG. 5, the present embodiment has a monitoring section after the first sudden start judgment point and before the second sudden start decision point, and monitors the data monitored before the second sudden start decision point after the second sudden start decision. Can process and record data. That is, the vehicle information at the time of sudden start can be recorded.

That is, for example, in the case of actual reported sudden acceleration, the engine RPM rises from an average minimum 1000 RPM to a maximum 4000 RPM within 1 to 2 seconds, and a situation in which any operation is impossible at an elevated RPM and speed may be maintained. Therefore, by determining the time point that is expected to be a sudden start, based on the vehicle information received through the CAN network to determine the rapid start situation and recording the vehicle information on the vehicle status at that time, whether the driver's mistake after the accident Many effects can be obtained in determining the cause of a defect.

On the other hand, the control unit 21 may provide the vehicle information at the time of sudden start collected through the recording unit 240 to the external diagnostic device (3), it is possible to determine whether or not the actual sudden start of the external external diagnostic device (3) May include an external database, server, and the like. Therefore, in the present embodiment, the GPS information and the collision information together with the vehicle information at the time of the sudden start generation may be provided to the external diagnosis apparatus 3 in real time, thereby preventing a situation in which data recovery due to the sudden start collision is impossible.

2 is a flowchart illustrating a vehicle sudden start diagnosis method according to an embodiment of the present invention, the vehicle sudden start diagnosis method will be described with reference to the following.

As shown in FIG. 2, the vehicle sudden start diagnosis method according to an exemplary embodiment of the present invention first determines whether the sudden start determination unit 230 satisfies the primary sudden start determination condition (S10).

At this time, the sudden oscillation determination unit 230 is to determine the sudden start based on the vehicle information received from the information collecting unit 20, in this embodiment to determine the sudden start, after the first sudden start judgment, monitoring the vehicle information for a certain time When the second sudden start determination is determined, the vehicle information monitored before the second sudden start determination may be processed and recorded.

Referring to FIG. 3, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) −V。) within the first speed change monitoring interval ((T。 + t) −T。). If it is more than one set value, it may be determined that the first sudden oscillation determination condition is satisfied.

In addition, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) -V。) within the first speed change monitoring period ((T。 + t) -T。) is greater than or equal to the first set value. When the accelerator pedal state determined by the vehicle information received from the information collecting unit 20 is not full or the accelerator pedal state is off, it may be determined that the first sudden oscillation determination condition is satisfied.

In addition, the sudden oscillation determination unit 230 has a speed increase amount ((V。 + V) -V。) within the first speed change monitoring period ((T。 + t) -T。) is greater than or equal to the first set value. When the gear state determined based on the vehicle information received from the information collecting unit 20 is a stop or neutral state, it may be determined that the first sudden start and stop condition is satisfied.

In this case, the controller 21 may terminate when it is determined that the first sudden oscillation determination condition is not satisfied.

In step S10, when the first sudden start determination condition is satisfied, the information collecting unit 20 monitors vehicle information (S20).

Here, the information collector 20 includes a message processor 210 for receiving an in-vehicle communication message and a message refiner 220 for acquiring a specific signal in the message received by the message processor 210. The sudden oscillation determination unit 230 may determine the sudden oscillation based on the purified data input from the message refiner 220.

At this time, before the information collection unit 20 determines that the second sudden start determination condition is satisfied by the sudden start determination unit 230, whether the brake pedal is operated, engine state, RPM, speed, gear state, GPS position information, and collision information Vehicle information including at least one of the can be monitored. That is, the information collecting unit 20 may receive vehicle information from the plurality of ECUs 1 before the secondary sudden start determination and monitor the vehicle information in the sudden start state.

Next, the sudden oscillation determination unit 230 may determine whether the secondary sudden oscillation determination condition is satisfied (S30).

That is, referring to FIG. 4, after the sudden oscillation determination unit 230 determines that the first sudden oscillation determination condition is satisfied, the speed within the second speed change monitoring interval ((T。 + t) −T。) is determined. When the increase amount is equal to or greater than the speed increase amount in the first speed change monitoring period, it may be determined that the second sudden oscillation determination condition is satisfied.

In this case, when it is determined that the sudden oscillation determination unit 230 does not satisfy the secondary sudden oscillation determination condition, it may end.

In step S30, when the second sudden oscillation determination condition is satisfied, the controller 21 processes the monitoring data (S40) and records the monitoring data (S50).

That is, even when the speed in the second speed change monitoring interval ((T。 + t) -T。) reaches the sudden start secondary determination set speed (Vc₂) (when the amount is smaller than Vc₂) May be applicable), and determine the final sudden oscillation through the sudden oscillation determination unit 230 to process the vehicle information monitored by the information collection unit 20 and record it in the storage device through the recording unit 240.

Therefore, as shown in FIG. 5, the present embodiment has a monitoring section after the first sudden start judgment point and before the second sudden start decision point, and monitors the data monitored before the second sudden start decision point after the second sudden start decision. Can process and record data. That is, the vehicle information at the time of sudden start can be recorded.

As described above, the vehicle rapid start diagnosis apparatus and method according to an embodiment of the present invention, by recording the vehicle status information at the time of the sudden start using a vehicle network router, whether the driver's mistake or vehicle defect after the sudden start accident It has the effect of making the cause clearer.

In addition, it is possible to predict a defective part through a vehicle state that does not respond to a driver's operation such as stopping the vehicle in a sudden start situation, thereby improving the vehicle reliability of the consumer.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1: A plurality of ECU (Electronic control Unit)
2: Vehicle CAN (Controller Area Network) communication router
20: information collection
210: message processing unit
220: message refiner
21: control unit
230: sudden oscillation judgment unit
240: record
3: External Diagnosis Machine

Claims (1)

An information collector configured to receive vehicle information through in-vehicle communication from a plurality of ECUs mounted in the vehicle;
A sudden oscillation determination unit for determining a rapid start based on the vehicle information received from the information collecting unit; And
And a recording unit for recording the vehicle information at the time of occurrence of the sudden oscillation when the sudden oscillation determination unit determines the sudden oscillation.
The information collecting unit,
A message processor to receive the in-vehicle communication message; And a message refiner for acquiring a specific signal in a message received by the message processor.
The sudden determination portion,
When the speed increase amount is equal to or greater than the first set value within the first speed change monitoring interval and the accelerator pedal state determined by the vehicle information received from the information collecting unit is not pully or the accelerator pedal state is Off In the case of the gear state determined by the vehicle information received from the information collecting unit is a stop or neutral state, it is determined that the first sudden start determination condition is satisfied, and the rapid start through the purified data input from the message refiner When the speed increase amount is greater than or equal to the first set value within the first speed change monitoring interval, it is determined that the first sudden start determination condition is satisfied, and after determining that the first sudden start determination condition is satisfied, the second speed change monitoring amount is determined. Speed increase in the section speed increase in the first speed change monitoring section If more than the amount, the sudden oscillation diagnostic apparatus, characterized in that it is determined that the second sudden oscillation determination conditions have been satisfied.

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