KR102123381B1 - Apparatus for diagnosing sudden unintended acceleration of a vehicle - Google Patents

Abstract

The present invention discloses a vehicle emergency diagnosis device. The vehicle emergency diagnosis apparatus of the present invention includes: an information collecting unit that receives vehicle information through in-vehicle communication from a plurality of electronic control units (ECU) mounted on a vehicle; An emergency determination unit determining an emergency occurrence based on vehicle information received from the information collection unit; And a recording unit that records vehicle information at the time of occurrence of the sudden occurrence when the sudden occurrence is determined by the sudden occurrence determination unit.

Description

Vehicle sudden vibration diagnosis device {APPARATUS FOR DIAGNOSING SUDDEN UNINTENDED ACCELERATION OF A VEHICLE}

The present invention relates to a vehicle emergency diagnosis apparatus, and more particularly, to a vehicle emergency diagnosis apparatus for recording vehicle state information at the time of an emergency occurrence using a vehicle network router.

In general, Sudden Unintended Acceleration (SUA) refers to a phenomenon in which a vehicle accelerates regardless of its will beyond the driver's control. Such sudden oscillations can occur in a stationary, low speed, or constant speed condition, and usually involve the inability to operate the braking system. Whether this is the driver's inexperienced driving or the mechanical or electrical defect of the car is always a matter of debate.

On the other hand, in the prior art, when a specific failure situation such as communication failure in the vehicle, error frame occurrence, collision occurrence, and non-lighting such as a warning light occurred, the vehicle was diagnosed using a gateway. That is, conventionally, a plurality of electronic control units (ECU) mounted in a vehicle and an internal diagnostic unit that transmits a failure code request message (I-BOX DTC Read Request) for diagnosis when the warning light of the vehicle is turned on to the plurality of ECUs , It connects CAN communication between the internal diagnostic device and the plurality of ECUs, and displays the same number in the DTC (Diagnostic Trouble Code) received from each ECU in the same cycle, temporarily stores it in a buffer, and monitors periodic transmission/reception data to fail or When an error frame occurs, including a gateway that acquires data before and after the occurrence time point and provides it to the internal diagnostic device, the gateway only performs a DTC recording action that is replied from the controller (ECU) only when the specific failure condition occurs. There is a problem in that it is difficult to record the state of a vehicle related to it at the time of an emergency without determining the expected situation.

Background art of the present invention is the Republic of Korea Patent Publication No. 10-2017-0033531 (published date: 2017.03.27.published), "storage of the vehicle when the vehicle suddenly developed and the automatic deceleration device development 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 emergency diagnosis apparatus for recording vehicle status information at the time of an emergency occurrence using a vehicle network router. .

A vehicle emergency diagnosis apparatus according to an aspect of the present invention, an information collecting unit for receiving vehicle information through in-vehicle communication from a plurality of electronic control units (ECU) mounted on the vehicle; An emergency determination unit determining an emergency occurrence based on vehicle information received from the information collection unit; And a recording unit that records the vehicle information at the time of the sudden occurrence when the sudden occurrence is determined by the sudden determination unit.

In the present invention, the information collection unit, a message processing unit for receiving the communication message in the vehicle; And a message refining unit acquiring a specific signal in the message received by the message processing unit, wherein the sudden diagnosis determination unit is configured to determine a sudden start through refined data input from the message refining unit.

In the present invention, when the speed increase amount is greater than or equal to the first set value within the first speed change amount monitoring section, the quick start determination unit is characterized in that it determines that the primary quick start determination condition is satisfied.

In the present invention, when the sudden vibration determination unit, the speed increase amount is greater than or equal to the first set value in the first speed change amount monitoring section, and the accelerator pedal state determined through the vehicle information received from the information collection unit is not full. Alternatively, when the accelerator pedal state is Off, it is characterized in that it is determined that the first sudden occurrence judgment condition is satisfied.

In the present invention, the sudden determination unit, if the speed increase amount is greater than or equal to the first set value in the first speed change amount monitoring section, and the gear state determined through the vehicle information received from the information collection unit is a stopped or neutral state, 1 It is characterized in that it judges that the condition for determining the sudden rash is satisfied.

In the present invention, after determining that the quick start determination unit satisfies the first quick start determination condition, when the speed increase amount in the second speed change amount monitoring section is greater than or equal to the speed increase amount in the first speed change amount monitoring section, the second quick start function It is characterized by determining that the judgment conditions are satisfied.

In the present invention, the information collecting unit, before determining that the secondary quick start determination condition is satisfied by the quick start determination unit, at least one of whether a brake pedal is operated, engine status, RPM, speed, gear status, GPS location information, and collision information It is characterized by monitoring the vehicle information including the above.

In the present invention, the recording unit is characterized in that it records the vehicle information collected by the information collecting unit before determining that the condition for determining the secondary sudden occurrence is satisfied.

A vehicle sudden diagnosis apparatus according to an embodiment of the present invention, by recording the vehicle status information at the time of the sudden occurrence using the vehicle network router, to clarify the cause of the driver's error or vehicle defect after the sudden accident It has the effect of helping

In addition, it is possible to improve the vehicle reliability of the consumer by predicting the defective part through the vehicle state that does not respond to driver operation such as stopping the vehicle in an emergency situation.

1 is a block diagram showing a vehicle sudden diagnosis apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a method for diagnosing a sudden vehicle accident according to an exemplary embodiment of the present invention.
FIG. 3 is a view for explaining a point of time for determining a primary sudden occurrence of an apparatus and method for diagnosing a vehicle suddenly according to an embodiment of the present invention.
FIG. 4 is a view for explaining a second sudden start determination time point of a vehicle sudden start diagnosis apparatus and method according to an embodiment of the present invention.
5 is a simplified diagram for explaining a point of time in which an emergency determination is made in an apparatus and method for diagnosing a vehicle suddenly according to an embodiment of the present invention.

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

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition of these terms should be made based on the contents throughout the specification.

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

As illustrated in FIG. 1, a vehicle sudden diagnosis apparatus according to an embodiment of the present invention includes an information collecting unit 20 and a control unit 21, and the information collecting unit 20 is mounted on a vehicle Vehicle information may be received from the electronic control unit (ECU) of the vehicle through in-vehicle communication and provided to the controller 21. In addition, the control unit 21 may provide the received vehicle information to the external diagnosis unit 3, and in this embodiment, the information collecting unit 20 and the control unit 21 are vehicle controller area network (CAN) communication routers. )(2).

That is, the present embodiment diagnoses the vehicle sudden acceleration using the vehicle CAN communication router 2, and vehicle information such as engine status, transmission status, and collision status from a plurality of ECUs 1 mounted in a vehicle configured with a CAN network. Received through CAN communication, it is possible to determine the sudden occurrence from the received information, it is possible to record the vehicle information for the vehicle state at the time of the sudden occurrence. In addition, the recorded information can be acquired through the external diagnostic device 3 to check whether an actual sudden earthquake has occurred.

The plurality of ECU 1 may include, for example, a power train-related engine management system (EMS), a transmission control unit (TCU), a collision determination unit (Airbag Control Unit, ACU), and the like. And 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 CAN communication is described as an example in the vehicle network in this embodiment, the present invention is not limited thereto, and may include all in-vehicle communication.

The information collecting unit 20 includes a message processing unit 210 that receives a communication message in the vehicle, and a message purification unit 220 that acquires a specific signal in the message received by the message processing unit 210.

That is, the message processing unit 210 may receive the CAN communication message in the vehicle from the plurality of ECUs 1 and transmit it to the message purification unit 220. At this time, the message refining unit 220 may acquire a specific signal among CAN communication messages in the vehicle collected from the plurality of ECUs 1 by the message processing unit 210.

Accordingly, the quick start determination unit 230 may determine the quick start through the purified data input from the message refining unit 220.

That is, the control unit 21 may include an emergency determination unit 230 and a recording unit 240, determine an emergency occurrence based on vehicle information received from the information collection unit 20, and record vehicle information at the time of the sudden occurrence. have.

In other words, when the quick start determination unit 230 determines the quick start based on the vehicle information received from the information collecting unit 20, and the recording unit 240 determines the quick start in the quick start determination unit 230, the sudden start occurs. Vehicle information can be recorded at a point in time.

On the other hand, in the present embodiment, it is possible to determine the sudden occurrence, but after determining the primary sudden occurrence, monitor the vehicle information for a certain time, and when the secondary sudden occurrence is determined, the monitored vehicle information before the secondary sudden occurrence determination may be processed and recorded.

Referring to FIG. 3, the sudden vibration determination unit 230 includes a speed increase amount ((V。+V)-V。) within the first speed change monitoring section ((T。+t)-T。). When it is equal to or greater than the first set value, it can be determined that the conditions for determining the primary sudden occurrence are satisfied.

In addition, in the sudden oscillation determination unit 230, the speed increase amount ((V。+V)-V。) in the first speed change amount monitoring section ((T。+t)-T。) is greater than or equal to the first set value, and When the accelerator pedal state determined through 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 primary sudden vibration determination condition is satisfied.

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

After determining that the condition for determining the primary sudden occurrence is satisfied, the emergency determination unit 230 may determine whether the condition for determining the secondary sudden occurrence is satisfied.

On the other hand, referring to the bar shown in Figure 4, after determining that the sudden start determination unit 230 satisfies the first sudden start determination condition, the speed within the second speed change monitoring section ((T。+t)-T。) When the increase amount is equal to or greater than the speed increase amount in the first speed change amount monitoring section, it may be determined that the condition for determining the second sudden occurrence is satisfied.

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

That is, the control unit 21 is also the case where the speed in the second speed change amount monitoring section ((T。+t)-T。) reaches the second set speed Vc₂ of rapid oscillation (small amount less than Vc₂) It may be applicable), it can be determined through the quick start determination unit 230 to process the vehicle information monitored by the information gathering unit 20 and recorded to the storage device through the recording unit 240.

Therefore, as shown in FIG. 5, in the present embodiment, the monitoring period is provided before the second sudden occurrence determination time after the first sudden occurrence determination time, and the data monitored before the second sudden occurrence determination time after the second sudden occurrence determination. Can process and record data. In other words, it is possible to record the vehicle information at the time of the quick start.

That is, for example, in the case of the actual reported sudden earthquake, the engine RPM may increase from an average of at least 1000 RPM to a maximum of 4000 RPM in 1 to 2 seconds, and a situation in which no manipulation is possible with the increased RPM and speed can be maintained. Therefore, by determining the point of time that is expected to be an emergency, and determining the situation of an emergency based on the vehicle information received through the CAN network, and recording the vehicle information about the vehicle state at that time, it is the driver's mistake after the accident. Many effects can be obtained in determining the cause of defect recognition.

On the other hand, the control unit 21 can provide the vehicle information at the time of the sudden oscillation collected through the recording unit 240 to the external diagnostic device 3, so that it is possible to check whether or not the actual sudden earthquake occurs from the outside. May include an externally located database, server, or the like. Accordingly, in the present embodiment, the GPS information and the collision information together with the vehicle information at the time of occurrence of the sudden earthquake are provided in real time to the external diagnostic device 3 to prevent a situation in which data recovery due to the sudden collision is impossible.

2 is a flowchart for explaining a method for diagnosing an emergency vehicle according to an embodiment of the present invention.

As shown in FIG. 2, in the method for diagnosing a vehicle sudden start according to an embodiment of the present invention, first, it is determined whether the sudden start determination unit 230 satisfies the condition for determining the primary sudden start (S10 ).

At this time, the quick start determination unit 230 determines the quick start based on the vehicle information received from the information collecting unit 20. In this embodiment, the quick start is determined, but after determining the first quick start, the vehicle information is monitored for a certain time. Then, when the second sudden start determination is made, it is possible to process and record the monitored vehicle information before the second sudden start determination.

Referring to FIG. 3, the sudden vibration determination unit 230 includes a speed increase amount ((V。+V)-V。) within the first speed change monitoring section ((T。+t)-T。). When it is equal to or greater than the first set value, it can be determined that the conditions for determining the primary sudden occurrence are satisfied.

In addition, in the sudden oscillation determination unit 230, the speed increase amount ((V。+V)-V。) in the first speed change amount monitoring section ((T。+t)-T。) is greater than or equal to the first set value, and When the accelerator pedal state determined through 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 primary sudden vibration determination condition is satisfied.

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

At this time, the control unit 21 may end when it is determined that the first sudden occurrence determination condition is not satisfied.

In step S10, if the primary emergency determination condition is satisfied, the information collecting unit 20 monitors the vehicle information (S20).

Here, the information collecting unit 20 includes a message processing unit 210 for receiving a communication message in the vehicle, and a message purification unit 220 for acquiring a specific signal in the message received by the message processing unit 210, The sudden oscillation determination unit 230 may determine the sudden occurrence through the purified data input from the message purification unit 220.

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

Next, the quick start determination unit 230 may determine whether the second quick start determination condition is satisfied (S30).

That is, referring to the bar shown in FIG. 4, the quick start determination unit 230 determines that the first quick start determination condition is satisfied, and then speeds within the second speed change monitoring section ((T。+t)-T。) When the increase amount is equal to or greater than the speed increase amount in the first speed change amount monitoring section, it may be determined that the condition for determining the second sudden occurrence is satisfied.

At this time, when the quick start determination unit 230 determines that the second quick start determination condition is not satisfied, it can be ended.

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

That is, the control unit 21 is also the case where the speed in the second speed change amount monitoring section ((T。+t)-T。) reaches the second set speed Vc₂ of rapid oscillation (small amount less than Vc₂) It may be applicable), it can be determined through the quick start determination unit 230 to process the vehicle information monitored by the information gathering unit 20 and recorded to the storage device through the recording unit 240.

Therefore, as shown in FIG. 5, in the present embodiment, the monitoring period is provided before the second sudden occurrence determination time after the first sudden occurrence determination time, and the data monitored before the second sudden occurrence determination time after the second sudden occurrence determination. Can process and record data. In other words, it is possible to record the vehicle information at the time of the quick start.

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

In addition, it is possible to improve the vehicle reliability of the consumer by predicting the defective part through the vehicle state that does not respond to driver operation such as stopping the vehicle in an emergency situation.

The present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art belongs can various modifications and equivalent other embodiments from this. Will understand.

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

1: Multiple ECU (Electronic Control Unit)
2: Vehicle CAN (Controller Area Network) communication router
20: Information collection department
210: message processing unit
220: message purification unit
21: control unit
230: sudden vibration determination unit
240: record book
3: External diagnostic device

Claims (1)

An information collecting unit for receiving vehicle information through in-vehicle communication from a plurality of electronic control units (ECU) mounted on the vehicle;
An emergency determination unit determining an emergency occurrence based on vehicle information received from the information collection unit; And
Includes a; recording unit for recording the vehicle information at the time of the sudden occurrence, if the sudden occurrence is determined by the sudden determination unit;
The sudden vibration determination unit,
If the speed increase amount is greater than or equal to the first set value within the first speed change monitoring section, and the accelerator pedal state determined through vehicle information received from the information collector is not full or the accelerator pedal state is off In the case of the case, and when the gear state determined through the vehicle information input from the information collecting unit is a stopped or neutral state, it is determined that the primary sudden start determination condition is satisfied, and the quick start is performed through the refined data input from the message refinement unit. If it is determined, and if the amount of speed increase within the first speed change amount monitoring section is greater than or equal to the first set value, it is determined that the first sudden start determination condition is satisfied, and after determining that the first sudden change determination condition is satisfied, the second speed change amount monitoring section If the amount of speed increase within is equal to or greater than the amount of speed increase within the first speed change amount monitoring section, it is determined that the condition for determining the second sudden occurrence is satisfied,
The information collecting unit,
A message processing unit receiving the communication message in the vehicle; And a message refinement unit for acquiring a specific signal in the message received by the message processing unit, before determining that the secondary sudden start determination condition is satisfied by the sudden start determination unit, whether the brake pedal is operated, engine state, RPM, speed, And a vehicle information including at least one of gear status, GPS location information, and collision information.

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