KR20200064830A - Method for enhancing safety of ramp parked vehicle - Google Patents

Abstract

The present invention relates to a method for enhancing safety of a vehicle parked on an uphill. When an EPB is not engaged after an engine is turned off, a gear and an inclination angle of the uphill are determined. When it is determined that there is a possibility that a vehicle rolls back, a driver is allowed to check whether the EPB is forcedly locked through telematics. The EPB is forcedly locked to prevent the vehicle parked on the uphill from rolling back when the driver consents or the movement of the vehicle is detected.

Description

METHOD FOR ENHANCING SAFETY OF RAMP PARKED VEHICLE

The present invention relates to a method for enhancing the stability of a vehicle parked on a ramp, and more specifically, to prevent safety of a vehicle parked on a ramp by preventing the vehicle parked on the ramp from running when the EPB is not fastened after the engine is turned off. This is a technique for enhancing the stability of a parking vehicle on a ramp that can prevent an accident from occurring.

When the vehicle is parked on a ramp and the driver gets off without fully activating the parking brake, the vehicle moves by its own weight (falling). In this case, a safety accident occurs.

In particular, there are cases where the driver judges the road with low slope to be flat and makes N-stage parking. In this case, if you get off without parking brake, the probability of an accident is very high.

Accordingly, if it is possible to prevent the vehicle from being parked on the ramp from falling or slipping, it will be possible to prevent the occurrence of a safety accident caused by the vehicle parked on the ramp.

The above descriptions as background arts are only for improving understanding of the background of the present invention, and should not be accepted as acknowledging that they correspond to the prior arts already known to those skilled in the art.

Republic of Korea Patent Publication No. 10-2015-0071927

The present invention determines the inclination angle of the shift stage and the ramp in a situation where the EPB is not fastened after the engine is turned off, and if there is a possibility of the vehicle flowing down, the telematics is used to confirm whether the EPB is forced to the driver. A method of enhancing the stability of a ramp-parking vehicle that prevents the occurrence of safety accidents by forcing the EPB to be forced to stop when a driver's consent is obtained or when a vehicle movement is detected. The purpose is to provide.

The method for enhancing the stability of a ramp parking vehicle according to the present invention for achieving the above object is to detect a current shift stage and an inclination angle of a parked vehicle when the vehicle starts off and the EPB is not engaged, and the vehicle flows down. The first step of determining whether the condition occurs; A second step of asking the driver whether or not the EPB is forced by using telematics when determining that the vehicle is flowing down; And a third step in which the parking brake is forcibly engaged and the ignition is turned off again by turning on the EPB after turning on the ignition of the vehicle when the driver agrees to force the EPB.

A fourth step of determining whether the vehicle moves through a wheel pulse change when there is no response from the driver regarding whether the EPB is forced after the second step; In the fourth step, if it is determined that there is movement of the vehicle, the third step of forcibly engaging the parking brake and turning off the ignition again by turning on the EPB after turning on the ignition of the vehicle is performed.

A fifth step of comparing an inclination angle of the parked vehicle with a first reference inclination angle when the current shift stage detected in the first stage is an N stage; As a result of the comparison in the fifth step, when it is determined that the inclined angle of the parked vehicle is greater than the first reference inclined angle, the vehicle is judged as a condition in which the vehicle flows down, and a telematics is used to ask the driver whether or not the EPB is forced to be tightened. It is characterized by performing the second step.

A sixth step of comparing an inclination angle of the parked vehicle with a second reference inclination angle when the current shift stage detected in the first stage is the P stage; As a result of the comparison in the above step 6, when it is determined that the inclined angle of the parked vehicle is greater than the second reference inclined angle, the vehicle is judged as a condition in which the vehicle flows down, and a telematics is used to ask the driver whether or not the EPB is forced. It is characterized by performing the second step.

The second reference inclination angle is greater than the first reference inclination angle.

It characterized in that it further comprises the step of notifying the completion of the forced tightening of the EPB to the driver by using the telematics after the engine is turned off again in the third step.

According to an embodiment of the present invention, after starting is turned off, the angle of inclination of the shift stage and the ramp is determined in a situation in which the EPB is not fastened, and the driver is determined through the telematics upon determining that there is a possibility of the vehicle flowing down. It is possible to prevent the occurrence of safety accidents by confirming whether the EPB is forcibly fastened, and if the driver's consent or the movement of the vehicle is detected, the EPB is forcibly closed to prevent the vehicle parked on the ramp from flowing down. It has an effect.

1 is a schematic configuration diagram and a flow chart for explaining a method for enhancing stability of a ramp parking vehicle according to the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described with respect to a method for enhancing the stability of a parking vehicle on a ramp according to a preferred embodiment of the present invention.

An apparatus for implementing an embodiment of the present invention includes an electronic stability control (ESC), an electric parking brake (EPB), a telematics terminal, and the like, as shown in FIG. 1.

ESC receives start-off information, EPB operation information, current shift stage information of the vehicle, inclination information of the parking vehicle, and movement information of the vehicle to determine whether the vehicle parked on the ramp is flowing (moving). Will judge.

The start-off information may be transmitted from a crankshaft position sensor (CPS), and EPB operation information may be transmitted from an EPB mounted on a vehicle wheel.

EPB is an electronic parking brake. Unlike the conventional parking brake system, which operated the parking brake by pulling the cable with a pedal or a lever, the electric signal is transmitted to the ECU by the operation of a simple button switch by the driver. It is a system that generates a braking force by pushing the piston in the caliper by operating the EPB actuator.

The main function of EPB is RAR (Roll Away Reclamp). RAR is a function that forcibly re-engages the parking brake when a vehicle moves after parking. It recognizes the vehicle's movement with wheel speed and wheel pulses, and can monitor until the CAN communication is received.

In addition, the current shift stage information of the vehicle may be transmitted from the inhibitor switch, the inclination information of the parking vehicle may be transmitted from the inclination sensor, and the motion information of the vehicle may be transmitted through wheel pulse change detected by the wheel speed sensor. Can be seen.

The ESC can transmit the operation request signal to the EPB using the information received from the various sensors described above, and the EPB can transmit the operation information of the parking brake to the ESC.

Telematics combines location-based services (LBS) and intelligent transportation systems (ITS) through mobile communication networks, satellite identification systems (GPS), and advanced geographic information systems (GIS) into cars to guide driving directions and vehicle accidents. It is a comprehensive service that provides real-time information on theft detection, traffic, and various conveniences to drivers, and a vehicle is equipped with a telematics terminal (controller) to provide such services.

ESC receives start-off information, EPB operation information, current shift stage information of the vehicle, inclination information of the parking vehicle, and movement information of the vehicle to determine whether the vehicle parked on the ramp is flowing (moving). The result of the determination is transmitted to the telematics terminal provided in the vehicle, and the telematics terminal transmits information on the determination result to the driver's portable terminal through the vehicle information center (base station) using a wireless communication network. do.

In addition, the telematics terminal can receive and feedback information requested by the driver through the mobile terminal of the driver, and use the information at this time to request information from the engine so that the vehicle can be turned on and off. Also, the EPB operation request information may be transmitted to the ESC according to the driver's request, and the ESC may transmit the operation request signal to the EPB according to the EPB operation request of the driver received through the telematics terminal.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

When the vehicle is in the off state (step S1) and the EPB is not engaged (the EPB is off (step S2)) (step S2), it is determined whether the current transmission stage is the N stage. S3)

If the start of the vehicle is ON (ON), the logic of the embodiment of the present invention is terminated immediately without proceeding further, and if the start of the vehicle is OFF, the EPB is signed (EPB ON). After performing the RAR function (step S4), the logic is terminated.

As a result of the determination in step S3, if the current shift stage is the N-speed, the inclination angle of the parked vehicle is compared with the first reference inclination angle (step S5), and as a result of the comparison, it is determined that the inclination angle of the parked vehicle is greater than the first reference inclination angle. In the process, it is judged as a condition in which the vehicle flows down, and the driver is asked whether the EPB is forced by using telematics (step S6).

The situation in which the driver parks the N-stage when parking is the same as a flat road where the inclination angle of the road is not large, and the first reference inclination angle may be defined as approximately 4% of the inclination, but is not limited thereto, and variously changed according to design This will be possible.

In addition, when it is determined in step S5 that the inclined angle of the parked vehicle is smaller than the first reference inclined angle, it is determined as a condition in which the vehicle does not flow, and in this case, the logic is terminated immediately without proceeding further. do.

On the other hand, as a result of the determination in step S3, if the current transmission stage is not the N stage, it is determined whether the current transmission stage is the P stage (step S7), and when determined as the P stage, the inclined angle of the parked vehicle and the second standard The inclination angle is compared (step S8), and when it is determined that the inclination angle of the parked vehicle is greater than the second reference inclination angle, the vehicle is judged as a condition in which the vehicle flows down, and the telematics is used to force the EPB to the driver. Step S6 of asking is performed.

The situation in which the driver parks the P stage when parking is a situation in which the inclination angle of the road is large, and the second reference inclination angle may be defined as approximately 20% of inclination, but is not limited thereto, and may be variously changed according to design.

In addition, when the comparison result in step S8 determines that the inclination angle of the parked vehicle is smaller than the second reference inclination angle in the P-stage parking state, it is determined as a condition in which the vehicle does not flow, and in this case, the logic is no longer determined. It ends without proceeding.

In step S6, after using the telematics to ask the driver whether or not the EPB is forcibly concluded, it is determined whether there is a response from the driver (step S9), and if there is a response from the driver, it is determined whether or not to consent to the forced enforcement of the EPB. (Step S10), and when it is determined that the EPB is not agreed to be forced, the logic is terminated without further processing.

However, if it is determined in step S10 that the driver has agreed to enforce the EPB, the telematics terminal sends a request signal to the engine to turn on the vehicle (step S11), and the telematics terminal operates the EPB with ESC. As the request signal is sent, the EPB is turned on to force the parking brake (step S12), and after the forced parking brake is completed, the engine sends a request signal again to turn the engine off (step S13).

Then, after the start is turned off through the step S13, the driver is notified of the completion of the forced tightening of the EPB using telematics (step S14).

On the other hand, when it is determined that there is no response from the driver as a result of the determination in step S9, it is determined whether there is a change in the wheel pulse using the detection result by the wheel speed sensor (step S15).

As a result of the determination in step S15, if there is a change in the wheel pulse, it is determined that the parked vehicle moves and flows down. In this case, the control logic is performed again from the above-described step S11 to turn on the EPB to turn on the parking brake. After forcibly signing, the logic is terminated.

However, if it is determined in step S15 that there is no change in the wheel pulse, the waiting time is compared with the reference time (step S16), and if the waiting time exceeds the reference time, the logic is terminated without further processing. , If the waiting time does not exceed the reference time, the control logic is fed back to be performed again from step S9 described above.

As described above, in the embodiment according to the present invention, after the start-off (OFF), the EPB is not fastened to determine the inclination angle of the shift stage and the ramp, and the telematics upon determining that there is a possibility of the vehicle flowing down. Through this, the driver is checked whether the EPB is forcibly fastened, and if the driver's consent or the movement of the vehicle is detected, the EPB is forcibly fastened to prevent the vehicle parked on the ramp from falling, causing a safety accident. There is an advantage that can be prevented.

Although the present invention has been illustrated and described in connection with specific embodiments, it is understood in the art that the present invention may be variously improved and changed within the limits that do not depart from the technical spirit of the present invention provided by the following claims. It will be obvious to those of ordinary skill.

Claims (6)

A first step of detecting whether the current shift stage and the inclined angle of the parked vehicle are a condition in which the vehicle flows down when the vehicle starts off and the EPB is not engaged;
A second step of asking the driver whether or not the EPB is forced by using telematics when determining that the vehicle is flowing down; And
When the driver agrees to the forced fastening of the EPB, a third step of forcing the parking brake to turn on the EPB and then turning off the engine again after turning on the vehicle to start the vehicle. The method according to claim 1,
And a fourth step of determining whether the vehicle moves through a wheel pulse change when there is no response from the driver regarding whether or not the EPB is forced after the second step;
When it is determined that there is movement of the vehicle in the fourth step, the stability of the vehicle parked on a ramp characterized in that the third step of forcing the parking brake and turning off the engine again by turning on the EPB after turning on the vehicle starts is performed. Method of strengthening. The method according to claim 1,
A fifth step of comparing an inclination angle of the parked vehicle with a first reference inclination angle when the current shift stage detected in the first stage is an N-speed;
As a result of the comparison in the fifth step, when it is determined that the inclination angle of the parked vehicle is greater than the first reference inclination angle, the vehicle is judged as a condition in which the vehicle flows down, and a telematics is used to ask the driver whether or not the EPB is forced. Method for enhancing the stability of a parking vehicle on a ramp, characterized in that the second step is performed. The method according to claim 3,
A sixth step of comparing an inclination angle of the parked vehicle with a second reference inclination angle when the current shift stage detected in the first stage is the P stage;
When the inclination angle of the parked vehicle is determined to be greater than the second reference inclination angle as a result of the comparison in the above step 6, the vehicle is judged as a condition in which the vehicle flows down, and telematics is used to ask the driver whether or not the EPB is forced. Method for enhancing the stability of a parking vehicle on a ramp, characterized in that the second step is performed. The method according to claim 4,
A method of enhancing stability of a parking vehicle on a ramp, wherein the second reference inclination angle is greater than the first reference inclination angle. The method according to claim 1,
And turning off the ignition again in the third step and then notifying the driver of the completion of the forced tightening of the EPB using telematics.

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