System and procedure for parking control of a vehicle

Abstract

System and method for parking a vehicle in which a transmission parking configuration is omitted, comprising a switch-by-wire device (110) configured to request parking control of the vehicle when a parking stage is entered by an actuation of a driver of the vehicle, and an electronic parking brake (120) configured to operate a brake (160) installed on a drive wheel via a relay (150) connected to operate the brake (160) into a parking brake state when the electronic parking brake (120) receives the parking control request from the switch-by-wire device (110), wherein the switch-by-wire device (110) is configured to switch the relay (150) to operate the brake (160) directly into the parking brake state.when the switching-by-wire device (110) receives a fault event from the electronic parking brake (120).

Description

[0001] The invention relates to a system and a method for parking control of a vehicle, and in particular to a system and a method for parking control of a vehicle that are suitable to replace a parking brake of the vehicle transmission in the related technology.

[0002] Generally, to park, a driver operates the gearshift, accelerator, brake, and steering wheel while checking for potential obstacles and ensuring a safe parking space. The driver may repeatedly move the vehicle back and forth to maneuver it into the space. If the parking space is small or the driver's skill level is low, the back-and-forth movement may be frequent, making parking more challenging.

[0003] Forward and reverse movement is achieved by the driver operating the gearshift lever. In the case of an automatic transmission, the gears are arranged in the sequence of Park (P), Reverse (R), Neutral (N), and Drive (D). This sequence can be inconvenient because the R and D gears require each movement up and down two gears. In contrast to a conventional mechanical transmission, an electronic transmission, i.e., a shift-by-wire system (SBW), has been developed without a mechanical connection, such as a cable, between the transmission and a gearshift lever.

[0004] Furthermore, the shift stage in the SBW device is selected electronically. There is no shock or vibration in the SBW device, as it lacks a mechanical linkage like a gearshift lever. There are also no limitations inherent in the SBW device's shape. The SBW device transmits the driver's shifting intention to a shift control unit via an electrical signal following a simple actuation by the driver. Therefore, selecting the shift stage is made easier.

[0005] However, when the SBW device is used on a vehicle, the manufacturing costs and weight of the vehicle are inevitably increased, thus reducing its sales competitiveness and fuel efficiency. Therefore, there is a need to solve the cost and weight increase problem, which is a barrier to the wider application of the SBW device in vehicles.

[0006] Furthermore, DE 10 2013 107 348 A1 discloses a system for the parking control of a vehicle which has a shift-by-wire control unit designed to perform vehicle braking, particularly in an emergency situation, by means of an output to a brake control unit and an electric parking brake control unit.

[0007] The invention provides a system and a method for parking control of a vehicle, which are suitable for eliminating a transmission parking configuration and realizing a transmission parking function by means of a cooperative control between an electronic transmission (e.g. a wired shift device (SBW) or an SBW system) and an electronic parking brake (EPB).

[0008] An exemplary embodiment of the invention provides a vehicle parking control system in which the transmission parking configuration can be omitted, wherein the system may comprise: a shift-by-wire device (SBW device or wired shifting device) configured to request vehicle parking control when a parking position is entered by an actuation of the vehicle's driver, and an electronic parking brake (EPB) configured to operate a brake installed on a drive wheel via a relay connected to operate the brake into a parking brake state when the electronic parking brake receives the parking control request from the shift-by-wire device.The switch-by-wire device can be configured to switch the relay to directly operate the brake into the parking brake state if the switch-by-wire device receives an error event from the electronic parking brake indicating that normal operation of the electronic parking brake is impossible.

[0009] The system may further include: a device group (or cluster) configured to display information to the driver corresponding to a switching operation of the shift-by-wire device; a central interface (CGW or central gateway) connecting the shift-by-wire device, the electronic parking brake, and the device group to communicate with a heterogeneous network; and a backup line (or fallback line) providing communication between the shift-by-wire device and the electronic parking brake when the fault event occurs.The shift-by-wire device may include: a control system configured to electronically input a shift stage from a park stage, reverse stage, neutral stage, drive stage or neutral park stage, and a shift-by-wire control unit (SBW control unit) configured to perform shift control based on the shift stage.

[0010] The electronic parking brake may include: an electronic parking brake switch (EPB switch) configured to receive a parking signal under manual driver control or a predetermined vehicle stop condition, and an electronic parking brake control unit (EPB control unit) configured to operate the brake via the relay to move the brake to the parking brake position when the parking signal is received. The switch-by-wire control unit may be configured to request the electronic parking brake control unit to perform a parking release control when, other than the parking position, any position other than reverse, neutral, drive, or neutral parking is received by the control system in the vehicle's parking control state.

[0011] The electronic parking brake control unit can be configured to transmit the fault event to the switch-by-wire control unit if the electronic parking brake control unit fails to perform parking control or parking release control in accordance with a request from a cooperative control unit of the switch-by-wire control unit. The electronic parking brake control unit can also be configured to determine that normal operation of the electronic parking brake is impossible if a voltage differential across the brake-actuating relay, which the electronic parking brake control unit monitors through self-diagnostics, exceeds a predetermined range.

[0012] The relay can be configured to transmit a parking control command from the electronic parking brake to the brake during normal operation (e.g., when no fault event is detected) and to transmit a parking control command from the switch-by-wire device to the brake in an emergency, indicating that normal operation of the electronic parking brake is impossible. The relay can include a first relay and a second relay, which selectively connect the electronic parking brake and the switch-by-wire device to the brake during vehicle parking control.

[0013] An exemplary embodiment of the invention can provide a method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: requesting a parking control of the vehicle to an electronic parking brake (EPB) by means of a switch-by-wire device (SBW device or...a wired switching device), when a parking stage is entered by an actuation by a driver of the vehicle, confirmation of monitoring information of the electronic parking brake by the electronic parking brake according to the parking control request to determine whether normal operation of the electronic parking brake is possible, and switching of a relay that is connected to operate a brake installed on a drive wheel directly into a parking brake state, by the switching-by-wire device, when the switching-by-wire device receives a fault event from the electronic parking brake indicating that normal operation of the electronic parking brake is impossible.

[0014] Furthermore, the procedure may include: setting the brake to the parking brake state by the electronic parking brake via the relay when the electronic parking brake determines that normal operation of the electronic parking brake is possible. The relay switching may include: operating a first motor on the brake caliper (MOC) and a second motor on the brake caliper (MOC), mounted on both drive wheels of the vehicle, into a parking brake state by means of a first relay and a second relay, switched by the wire-switching device, when the fault event is detected.

[0015] Confirming the monitoring information may include: Determining that normal operation of the electronic parking brake is impossible, by an Electronic Parking Brake Control Unit (EPB Control Unit) of the electronic parking brake, when a voltage difference of the brake-driving relay, which the Electronic Parking Brake Control Unit monitors by self-diagnosis, exceeds a predetermined range.

[0016] The procedure may further include: requesting a parking release to the electronic parking brake via the switch-by-wire device when a gear position other than the parking position is entered by an action of the driver; confirming monitoring information of the electronic parking brake by the electronic parking brake based on the parking release request to determine whether normal operation of the electronic parking brake is possible; setting the brake to a parking brake release state by the electronic parking brake via the relay when the electronic parking brake determines that normal operation of the electronic parking brake is possible; and switching the relay to operate the brake directly into the parking brake release state by the switch-by-wire device when the switch-by-wire device detects a fault event indicating that normal operation of the electronic parking brake is impossible.from the electronic parking brake. Furthermore, the method can include: receiving the fault event from the electronic parking brake via a dual backup (or alternative) line through the switching-by-wire device.

[0017] Another exemplary embodiment of the invention can provide a method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising receiving a signal from an electronic parking brake switch (EPB switch) of an electronic parking brake (EPB) input by a driver of the vehicle, confirming monitoring information of the electronic parking brake based on the input signal of the electronic parking brake switch by the electronic parking brake to determine whether normal operation of the electronic parking brake is possible, and determining a fault event as an event in response to the determination that normal operation of the electronic parking brake is impossible, transmitting the fault event to a switch-by-wire device (SBW device).a wired switching device) by the electronic parking brake to request cooperative control, and switching a relay connected at normal time to directly operate a brake installed on a drive wheel into a parking brake state by the switching-by-wire device when the switching-by-wire device receives a fault event from the electronic parking brake.

[0018] The exemplary embodiment of the invention can implement safe transmission parking control by means of cooperative control of the electronic transmission (SBW) and the electronic parking brake (EPB). The exemplary embodiment can reduce manufacturing costs and vehicle weight by omitting or eliminating the transmission parking configuration. Furthermore, the exemplary embodiment can ensure safe transmission parking control and can safeguard consumer competitiveness as a result of the reduction in manufacturing costs and vehicle weight.

[0019] The invention is explained in more detail with reference to the drawing. The drawing shows: Fig. 1 a conceptual scheme of a system for parking control of a vehicle according to an exemplary embodiment of the invention; Fig. 2 a block diagram of a configuration of the system for parking control of the vehicle according to an exemplary embodiment of the invention; Fig. 3 and Fig. 4 Flowcharts of methods for parking control and parking release control of an electronic parking brake (EPB) according to an exemplary embodiment of the invention; Fig. 5 a flowchart of a method for parking control of a vehicle according to an exemplary embodiment of the invention; Fig. 6 a flowchart of a method for parking release control of a vehicle according to an exemplary embodiment of the invention; and Fig. 7 a table that illustrates an effect of the vehicle parking control system according to an exemplary embodiment of the invention.

[0020] It is understood that the term "vehicle" or "vehicle-" or any other similar term as used herein includes general motor vehicles such as passenger cars, including SUVs, buses, trucks, various commercial vehicles, watercraft, including a variety of boats and ships, aircraft, and the like, as well as hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other vehicles using alternative fuels (e.g., fuels derived from raw materials other than petroleum).

[0021] Although the exemplary embodiment is described as using multiple units to perform the exemplary process, it is understood that the exemplary processes can also be performed by one or more modules. Furthermore, it is understood that the term control device / control unit refers to a hardware device comprising memory and a processor. The memory is configured to store modules, and the processor is specifically configured to apply the modules to perform one or more processes, which are described below.

[0022] Furthermore, the control logic according to the present invention can be configured as a non-perishable, computer-readable medium on a computer-readable medium containing executable program instructions that are executed by a processor, a control unit, or the like. Examples of computer-readable media include, but are not limited to, ROM, RAM, CD-ROMs, magnetic tapes, floppy disks, memory sticks, chip cards, and optical data storage devices. The computer-readable storage medium can also be distributed in network-connected computer systems, so that the computer-readable medium is stored and executed in a distributed manner, e.g., via a telematics server or a control area network (CAN).

[0023] The terminology used herein is solely for the purpose of describing particular embodiments and is not intended to limit the invention. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It is further understood that the terms "has" and / or "having" when used in this description describe the presence of the aforementioned features, integers, steps, processes, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, processes, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed elements.

[0024] The present invention is described in more detail below with reference to the accompanying drawings, which show exemplary embodiments of the invention. As technically skilled persons would realize, the described exemplary embodiments can be modified in various other ways without deviating from the meaning or scope of the present invention. Accordingly, the drawings and the description are to be regarded as explanatory and not limiting. Identical reference numerals denote identical elements throughout the description. Throughout the description, the terms "-er", "-or", and "module", as described in the description, denote units for processing at least one function and one process and can be implemented by hardware components or software components and combinations thereof.

[0025] A system and a method for parking a vehicle according to an exemplary embodiment of the invention are described in detail below with reference to the accompanying drawings.

[0026] With reference to Fig. 1 In a vehicle according to a related technology, when a Park (P) stage is entered in an electronic transmission, a transmission control unit (TCU) drives a motor to perform a parking function by operating a transmission parking mechanism. However, according to an exemplary embodiment of the invention, the system 100 for parking the vehicle can omit the transmission parking configuration according to the related technology. One purpose of the invention is to reduce the manufacturing costs and the weight of the vehicle by implementing transmission parking control via cooperative control between the electronic transmission (e.g., a wired shift linkage (SBW) or an SBW system) and an electronic parking brake (EPB).

[0027] System 100 can be configured to park one of the vehicle's rear wheels using an EPB control unit when the P position is selected in the SBW device. Conversely, if a gear position other than P (e.g., Reverse (R), Neutral (N), or Drive (D)) is selected in the SBW device, System 100 can be configured to release the rear wheel from parking using the EPB control unit.

[0028] With reference to Fig. Section 2 describes in detail a configuration of the vehicle parking control system according to an exemplary embodiment of the invention. As in Fig. As shown in Figure 2, the system 100 can include the SBW device 110, the EPB 120, a device group (cluster) 130, a central interface (CGW - central gateway) 140, a relay 150 and a brake 160.

[0029] The SBW device 110 can be a control system 111 configured to select a switching stage (e.g., a gear shift stage) from the P stage, the R stage, the N stage, the D stage, or a P FREIGABE -stage (i.e., a neutral parking stage) is entered electronically, and an SBW control unit 112 is configured to perform shift control based on the shift stage. The control system 111 can comprise one of a button-type control system, a lever-type control system, a rocker-type control system, a combination of a button-type and a rocker-type control system, or a combination of a button-type and a lever-type control system. For simplicity, the control system 111 comprising the button-type control system is described below.

[0030] The SBW control unit 112 can be configured to perform switching control by actuating a solenoid or an electric motor in response to a switching stage input to the control system 111, in order to supply or deactivate hydraulic pressure for each switching stage. The SBW control unit 112 can also be configured to perform parking control and parking release control through cooperative control via an EPB control unit 122. In particular, the SBW control unit 112 can be configured to request the EPB control unit 122 to perform parking control when the P stage is input to the control system 111.

[0031] If a different shift stage than the P stage (e.g. the R stage, the N stage, the D stage or the P) is selected FREIGABEWhen the SBW control unit 112 receives a signal (level -) from the control system 111 in the vehicle's parking control state, it can be configured to request the EPB control unit to perform the parking release control. As described above, the SBW control unit 112 can be configured to request the EPB control unit 122 to perform cooperative control with respect to the vehicle's parking control or parking release control. The EPB control unit 122 can then be configured to perform the parking control or parking release control according to the cooperative control request.

[0032] Furthermore, the SBW control unit 112 can be configured to receive a fault event from the EPB control unit 122 after a request for cooperative control. In response to receiving the fault event, the SBW control unit 112 can connect the relay 150, which is normally connected to the EPB control unit 122 and the brake 160 installed on a drive wheel of the vehicle (e.g., when no fault is detected), to the SBW control unit 112 to allow the SBW control unit 112 to directly perform parking control or parking release control for the brake.

[0033] If no response is received from the EPB control unit 122 for a predetermined period after the SBW control unit 112 has requested cooperative control with the EPB control unit 122, the SBW control unit 112 may be configured to detect an error event (e.g., the failed request). Therefore, the SBW control unit 112 may be configured to directly perform the parking control or parking release control for the brake via the linkage circuit with respect to relay 150. In contrast to a wired system according to the related technology, the EPB 120 may be an electronically controlled parking brake system and includes an EPB switch 121 and the EPB control unit 122.

[0034] In particular, the EPB switch 121 can input a parking signal under manual control (e.g., by pressing a parking button) by the driver or a predetermined vehicle stop condition. For example, the EPB switch 121 can input the parking signal when driving information fulfills the stop condition. The driving information can include the vehicle speed, whether the vehicle's engine is running, and whether the brake 160 is being applied. The EPB switch 121 can input a parking release signal in an acceleration state in which the vehicle's accelerator pedal is being pressed or engaged.

[0035] When the parking signal from EPB switch 121 is received, the EPB control unit 122 can be configured to actuate the brake 160, installed on the drive wheel, via relay 150 to place the vehicle in a parking brake state. When the parking release signal from EPB switch 121 is received, the EPB control unit 122 can be configured to actuate the brake 160 via relay 150 to release the parking brake state. The cooperative control of the EPB control unit 122 and the SBW control unit 112 is described below.

[0036] When the EPB control unit 122 receives a parking control request from the SBW control unit 112, the EPB control unit 122 can be configured to actuate the brake 160 via relay 150 to engage the parking brake. Subsequently, when the EPB control unit 122 receives the parking release request from the SBW control unit 112, the EPB control unit 122 can be configured to actuate the brake 160 via relay 150 to release the brake to the parking brake.

[0037] If the EPB control unit 122 fails to perform the parking control or parking release control as requested by the cooperative control unit of the SBW control unit 112, the EPB control unit 122 can be configured to transmit a fault event from the cooperative control unit (e.g., a fault detection message) to the SBW control unit 112. In other words, the fault event from the cooperative control unit can be a message indicating that the EPB control unit 122 does not respond to the request from the cooperative control unit of the SBW control unit 112 to request emergency control from the SBW control unit 112. The EPB control unit 122 can then be configured to transmit the fault event from the cooperative control unit directly to the SBW control unit 112 via a separate backup line 141.In particular, the EPB control unit 122 can be configured to identify and display the cause of the fault event via self-diagnosis.

[0038] Furthermore, device group 130 can be configured to display information related to a shift operation of system 100 to provide this information to the driver. For example, device group 130 can be configured to display shift stage information based on the D, R, N, and P positions of the SBW device 110. Device group 130 can also be configured to display event information to the driver, which the EPB control unit 122 receives after performing self-diagnostics related to the cooperative control fault event. The CGW 140 can connect the SBW device 110, the EPB 120, and device group 130 using various communication protocols to enable CAN bus communication between the SBW device, the EPB, and the device group.

[0039] System 100 can include the backup line 141 for safe communication to enable cooperative control between the SBW device 110 and the EPB 120. The backup line 141 can establish communication between the SBW device 110 and the EPB 120 when an event (e.g., a fault event) occurs. The backup line 141 can be a duplicate line designed to ensure safe parking control even if a communication failure occurs with the CGW 140, thus guaranteeing that the SBW device 110 and the EPB 120 are able to communicate safely.

[0040] Furthermore, relay 150 can include a first relay 151 and a second relay 152 for selectively connecting the EPB 120 and the SBW device 110 to the brake 160 during vehicle parking control. Relay 150 can connect the EPB control unit 122 to the brake 160 to transmit a parking control command to the brake 160 when no fault event is detected (e.g., during normal operation). Relay 150 can connect the SBW control unit 112 to the brake 160 when an event occurs that prevents normal operation of the EPB 120 (e.g., when a fault occurs). In other words, relay 150 can transmit the parking signal and the parking release signal to brake 160 based on the control command of EPB 120 at a normal time (e.g. when no fault is detected), and can transmit the parking signal and the parking release signal of the SBW control unit 112 to brake 160 in an emergency.

[0041] The brake 160 can have a first caliper motor (MOC) 161 and a second MOC 162, which are mounted on both drive wheels of the vehicle and are accordingly connected to the first relay 151 and the second relay 152. The caliper motor (MOC) can refer to a caliper motor (MOC) system or a caliper motor (MOC) device. The first MOC 161 and the second MOC 162 can be mounted on either side of the rear wheels; however, the invention is not limited thereto, and can also be mounted on the front wheels of the vehicle, depending on the vehicle type.

[0042] Each of the first and second MOC 161 and 162 can be configured to convert a motor's torque into a linear motion via a lead screw during parking control, so that both pads exert pressure on the brake disc to generate braking force. Each of the first and second MOC 161 and 162 can also be configured to release the brake disc pressure via the motor control in the opposite direction to the motor control in the parking control described above.

[0043] With regard to the Fig. 3, Fig. 4 to Fig. Section 5 describes a method for electronic transmission control based on a configuration of the electronic transmission control system according to an exemplary embodiment of the invention. The methods described herein can be carried out by a control unit comprising a processor and a memory. Fig. 3 and Fig. Figure 4 shows flowcharts illustrating methods for parking control and parking release control of the electronic parking brake (EPB) according to an exemplary embodiment of the invention.

[0044] With reference to Fig. 3. If the driver enters the parking signal into EPB switch 121 (step S11), the EPB 120 can be configured to perform the parking action of the first MOC 161 and the second MOC 162, which are mounted on the rear wheels (step S12). The EPB 120 can be configured to transmit the parking signal to the first MOC 161 and the second MOC 162 via the first relay 151 and the second relay 152, which are normally connected.

[0045] With reference to Fig. 4. If the driver, in a state where the vehicle's parking brake is applied, inputs the parking release signal into EPB switch 121 (step S21), the EPB 120 can be configured to release the parking signal of the first MOC 161 and the second MOC 162, which are mounted on the rear wheels (step S22). The EPB 120 can then be configured to transmit the parking release signal to the first MOC 161 and the second MOC 162 via the first relay 151 and the second relay 152, which are normally connected.

[0046] Fig. Figure 5 is a flowchart illustrating a method for parking the vehicle according to an exemplary embodiment of the invention. With reference to Fig. Figure 5 shows a method for parking control of the vehicle according to the cooperative control between the SBW device 110 and the EPB 120 of the system 100.

[0047] In particular, when the P-stage is entered by the control system 111 (step S31), the SBW device 110 can be configured to request parking control from the EPB 120 (step S32). If the EPB 120 receives or acknowledges monitoring information from the EPB control unit 122 in accordance with the parking control request, and determines that normal operation of the EPB or the EPB control unit 122 is possible (step S33), i.e., no fault is detected, the EPB 120 can be configured to perform the parking of the first MOC 161 and the second MOC 162 via the relay 150, which is connected at normal times (step S34).

[0048] Furthermore, the EPB 120 can be configured to transmit the vehicle's parking status to device group 130, and the device group can be configured to display the parking status (step S38). In response to the finding in step S33 that the monitoring information from the EPB control unit 122 indicates that normal EPB operation is impossible (i.e., a fault based on a connection malfunction is detected), the EPB 120 can be configured to request cooperative control as a result of the cooperative control fault event at the SBW device 110 (step S35).If a voltage difference of the relay 150 for driving the first MOC 161 and the second MOC 162, which the EPB control unit 122 monitors via self-diagnosis, exceeds a predetermined range, the EPB 120 can be configured to determine that normal operation of the EPB is impossible or to detect the fault / error condition.

[0049] Furthermore, the EPB 120 can be configured to detect a condition in which the first MOC 161 and the second MOC 162 are not controlled for various reasons, such as a fault in the EPB control unit 122, a connection fault of relay 150, or an open circuit in relay 150. When the SBW device 110 receives the fault event from the EPB 120, the SBW device 110 can connect relay 150 to itself (step S36) and can be configured to park the first and second MOC 161, which are mounted on the rear wheels, via the connected relay 150 (step S37).

[0050] The SBW device 110 can be configured to transmit the vehicle's parking status to device group 130, and device group 130 can be configured to display the parking status (step S38). The SBW device 110 can also be configured to operate device group 130 to display status information from the EPB control unit 122, corresponding to the fault event, in order to provide the driver with a status message. Subsequently, a state in which relay 150 is connected to the SBW device 110 can persist until the EPB 120 is operating normally (e.g., until the fault condition is resolved).

[0051] Fig. Figure 6 is a flowchart illustrating a method for controlling the parking release of the vehicle according to an exemplary embodiment of the invention. With reference to Fig. Section 6 describes a parking release procedure according to cooperative control under the assumption that the vehicle is parked normally by the EPB 120.

[0052] If a switching stage other than the P stage (e.g., the R stage, the N stage, or the D stage) is entered by the control system 111 in the parked state of the vehicle (step S41), the SBW device 110 can be configured to request a parking release from the EPB 120 (S42). If the EPB 120 receives or acknowledges monitoring information from the EPB control unit 122 in accordance with the parking release request and determines that normal operation of the EPB or the EPB control unit 122 is possible (step S43), the EPB 120 can be configured to release the parking of the first MOC 161 and the second MOC 162 via the relay 150, which is normally connected (step S44).

[0053] Furthermore, the EPB 120 can be configured to transmit a state of a switching stage other than the P stage to the device group 130, and the device group can be configured to display the state (step S48). In response to the determination in step S43 that the monitoring information of the EPB control unit 122 indicates that normal operation of the EPB is impossible with respect to the parking release request, the EPB 120 can be configured to request cooperative control as a result of the cooperative control fault event at the SBW device 110 (step S45).

[0054] When the SBW device 110 receives the fault event from the EPB 120, the SBW device 110 can connect the relay 150 to the SBW device 110 (step S46) and can be configured to release the first MOC 161 and the second MOC 161, which are mounted on the rear wheels, via the connected relay 150 (step S47). The 110 can then be configured to transmit the state of a gear selector other than the vehicle's P stage to the device group 130, and the device group 130 can be configured to display this state (step S48). The SBW device 110 can be configured to operate the device group 130 to display status information from the EPB control unit 122 corresponding to the fault event, in order to inform the driver of this status information.

[0055] Fig. Figure 7 shows a table illustrating an effect of the vehicle parking control system according to an exemplary embodiment of the invention. With reference to Fig. 7. The electronic transmission control system can perform safe transmission parking control through the cooperative control of the electronic transmission (SBW) and the electronic parking brake (EPB).

[0056] The exemplary embodiment can reduce the manufacturing costs and weight of the vehicle by eliminating the transmission configuration. The exemplary embodiments of the invention have been described; however, the scope of the invention is not limited thereto and can be modified in various ways.

[0057] In the exemplary embodiment of the invention, which is described in the Fig. 5 and Fig. As shown in Figure 6, the parking and parking release procedure is described as being carried out by cooperative control of the SBW device 110 and the EPB 120 according to the input of the P-stage and the input of a switching stage other than the P-stage into the control system 111. However, the exemplary embodiment of the invention is not limited to this, and a method such as the one shown in the Fig. 5 and Fig. The 6 parking and parking release procedures shown can be found in the Fig. 3 and Fig. The parking and parking release control shown in section 4 can be used according to the input of the EPB switch 121 of the EPB 120.

[0058] For example, the EPB 120 can be configured to request cooperative control following a fault event of the cooperative control at the SBW device 110 if normal operation of the EPB control unit 122 is impossible after the driver has inputted a signal to the EPB switch 121. At this point, the SBW device 110 can be configured to perform cooperative control in response to the input signal from the EPB switch 121 by forcibly connecting the relay 150 to the SBW device and executing a parking or parking release of the first MOC 161 and the second MOC 162.

[0059] The exemplary embodiment of the invention is not carried out by the above-mentioned device and / or method and can be carried out by a program for operating a function according to the configuration of the exemplary embodiment of the invention, a recording medium in which the program is recorded, and the like, and the implementation can be easily realized by technically skilled persons from the description of the above exemplary embodiment. Reference symbol list 100 Parking control system 110 Electronic transmission 111 Tax system 112 SBW control unit 120 EPB 121 EPB switches 122 EPB control unit 130 device group 140 CGW 141 Replacement line 150 relays 151 first relay 152 second relay 160 MOC 161 first MOC 162 second MOC

Claims

[1] System for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: a switch-by-wire device (110) configured to request parking control of the vehicle when a parking level is entered by an actuation by a driver of the vehicle; and an electronic parking brake (120) configured to operate a brake (160) installed on a drive wheel via a relay (150) which is connected to operate the brake (160) into a parking brake state when the electronic parking brake (120) receives the parking control request from the switch-by-wire device (110), wherein the switching-by-wire device (110) is configured to switch the relay (150) to directly operate the brake (160) into the parking brake state when the switching-by-wire device (110) receives a fault event from the electronic parking brake (120). [2] System according to claim 1, further comprising: a device group (130) configured to display information to the driver regarding a switching operation of the wire-shifting device (110); a central interface (140) which connects the switch-by-wire device (110), the electronic parking brake (120) and the device group (130) which communicate with a heterogeneous network; and a backup line (141) that connects communication between the switch-by-wire device (110) and the electronic parking brake (120) when the fault event occurs. [3] System according to claim 1 or 2, wherein the switch-by-wire device (110) comprises: a control system (111) configured to electronically input a shift position from a park position, a reverse position, a neutral position, a drive position or a neutral park position; and a switch-by-wire control device (112) configured to perform switching control based on the switching stage. [4] System according to claim 3, wherein the electronic parking brake (120) comprises: an electronic parking brake switch (121) configured to input a parking signal under manual control by the driver or a predetermined stop condition of the vehicle; and an electronic parking brake control device (122) configured to operate the brake (160) by means of the relay (150) to set the brake (160) to the parking brake state when the parking signal is entered. [5] System according to claim 4, wherein the switch-by-wire control device (112) is configured to request the electronic parking brake control device (122) to perform a parking release control when, other than the parking stage, a reverse stage, neutral stage, drive stage and neutral parking stage is received by the control system (111) in the parking control state of the vehicle. [6] System according to claim 4 or 5, wherein the electronic parking brake control unit (122) is configured to transmit the fault event to the switch-by-wire control unit (112) when the electronic parking brake control unit (122) fails to perform the parking control or the parking release control based on the request for cooperative control of the switch-by-wire control unit (112). [7] System according to one of claims 4 to 6, wherein the electronic parking brake control unit (122) is configured to detect the fault event when a voltage difference of the relay (150) driving the brake (160), which the electronic parking brake control unit (122) monitors by self-diagnosis, exceeds a predetermined range. [8] System according to any one of claims 1 to 7, wherein the relay (150) transmits a parking control command from the electronic parking brake (120) to the brake (160) at a normal time and transmits a parking control command from the switch-by-wire device (110) to the brake (160) in an emergency related to the fault event. [9] System according to any one of claims 1 to 8, wherein the relay (150) comprises a first relay (151) and a second relay (152) which selectively connect the electronic parking brake (120) and the switch-by-wire device (110) to the brake (160) during the parking control of the vehicle. [10] Method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: Requesting a parking control of the vehicle to an electronic parking brake (120) by means of a switch-by-wire device (110) when a parking stage is entered by an actuation by a driver of the vehicle (S32); Confirmation of monitoring information from the electronic parking brake (120) by the electronic parking brake (120) based on the parking control request in order to detect a fault event; and Switching a relay (150) connected to directly operate a brake (160) installed on a drive wheel into a parking brake state, by the switching-by-wire device (110), when the switching-by-wire device (110) receives the fault event from the electronic parking brake (120). [11] Method according to claim 10, wherein the switching comprises: Operating the brake (160) by means of the relay (150) into the parking brake state by the electronic parking brake (120) when the electronic parking brake (120) detects normal operation (S33). [12] Method according to claim 10 or 11, wherein the switching comprises: Operating a first motor on the brake caliper (161) and a second motor on the brake caliper (162), which are mounted on both drive wheels of the vehicle, into a parking brake state by means of a first relay (151) and a second relay (152) which are switched by the switching-by-wire device (110), by the switching-by-wire device (110) when the fault event is detected (S36, S37). [13] Method according to any one of claims 10 to 12, wherein the confirmation of the monitoring information comprises: Detection of the fault event by an electronic parking brake control unit (122) of the electronic parking brake (120) when a voltage difference of the relay (150) driving the brake (160), which the electronic parking brake control unit (122) monitors by self-diagnosis, exceeds a predetermined range. [14] Method according to any one of claims 10 to 13, further comprising: Requesting a parking release to the electronic parking brake (120) by the shift-by-wire device (110) when a shift stage other than the parking stage is entered by an operation of the driver (S42); Confirmation of monitoring information from the electronic parking brake (120) by the electronic parking brake (120) according to the parking release request in order to determine whether the fault event occurs; Operating the brake (160) by means of the relay (150) into a parking brake release state by the electronic parking brake (120) when the electronic parking brake (120) detects normal operation (S43); and Switching the relay (150) to operate the brake (160) directly into the parking brake release state, by means of the switching-by-wire device (110), when the switching-by-wire device (110) receives a fault event from the electronic parking brake (120). [15] Method according to any one of claims 10 to 14, wherein the switching comprises: Receiving the fault event from the electronic parking brake (120) via a double backup line (141) through the wire-switching device (110). [16] Method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: Receiving a signal from an electronic parking brake switch (121) of an electronic parking brake (120) entered by a driver of the vehicle by the electronic parking brake (120); Confirmation of monitoring information of the electronic parking brake (120) according to the input signal of the electronic parking brake switch (121) by the electronic parking brake (120) in order to determine whether a fault event occurs; Transmission of the fault event to a switch-by-wire device (110) via the electronic parking brake (120) to request cooperative control; and Switching a relay (150) connected to directly operate a brake (160) installed on a drive wheel into a parking brake state, by the switching-by-wire device (110), when the switching-by-wire device (110) receives the fault event from the electronic parking brake (120).

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