# US 10,864,899 B2 · System and method for parking control of vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,899 B2 - Document ID: US10864899B2 - Status: Granted - Kind: B2 - Application number: 16/152,338 - Filed: 2018-10-04 - Published: 2019-06-06 - Granted: 2020-12-15 - Earliest claimed: 2017-12-05 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Joon Young Park; Chang Hyun Lee; Yang Rae Cho; Hwi Bong Chang; Seong Uk Bae - Web page: https://patentgrep.com/patent/US10864899B2 ## CPC - B60T 17/18: Safety devices; Monitoring - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/21: using visual output, e.g. blinking lights or matrix displays - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - B60T 7/12: for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} - B60T 7/22: initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle {, or by means of contactless obstacle detectors mounted on the vehicle} - B60T 8/00: Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force (by changing number of effective brake cylinders in power brake systems B60T17/10) - B60T 8/17: Using electrical or electronic regulation means to control braking {(detecting or indicating faulty operation B60T8/885)} - F16H 61/32: Electric motors {, actuators or related electrical control means} therefor - F16H 63/3458: {with electric actuating means, e.g. shift by wire} - F16H 63/42: Ratio indicator devices - F16H 63/48: Signals to a parking brake {or parking lock; Control of parking locks or brakes being part of the transmission} - G07C 5/0808: {Diagnosing performance data (testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005)} - B60T 7/02: for personal initiation - B60T 13/741: {acting on an ultimate actuator} - B60T 2201/10: Automatic or semi-automatic parking aid systems - B60T 2260/04: Automatic transmission - B60T 2270/402: Back-up - F16H 61/0204: {for gearshift control, e.g. control functions for performing shifting or generation of shift signal} - F16H 63/486: {Common control of parking locks or brakes in the transmission and other parking brakes, e.g. wheel brakes} - F16H 2063/423: {Range indicators for automatic transmissions, e.g. showing selected range or mode} - F16H 2312/12: Parking - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16H: GEARING - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE ## Abstract A system for parking control of a vehicle in which a transmission parking configuration is omitted is provided. The system includes a shift by wire device that requests a parking control of the vehicle when a parking stage is input by an operation of a driver. An electronic parking brake operates a brake installed on a drive wheel via a relay which is connected to be in a parking brake state when the electronic parking brake receives the parking control request from the shift by wire device. The shift by wire device switches the relay to directly operate the brake to be in the parking brake state when the shift by wire device receives a failure event, which indicates that a normal operation of the electronic parking brake is impossible, from the electronic parking brake. ## Claims ### Claim 1 A system for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: a shift by wire device configured to request a parking control of the vehicle when a parking stage is input by an operation of a driver of the vehicle; and an electronic parking brake configured to operate a brake installed on a drive wheel via a relay which is connected to operate the brake to be in a parking brake state when the electronic parking brake receives the parking control request from the shift by wire device, wherein the electronic parking brake is configured to confirm monitoring information of the electronic parking brake according to the input signal of the electronic parking brake switch to determine whether a failure event occurs, and to transmit the failure event to a shift by wire device to request cooperative control, and wherein the shift by wire device is configured to switch the relay to directly operate the brake to be in the parking brake state when the shift by wire device receives the failure event from the electronic parking brake. ### Claim 2 (depends on 1) The system of claim 1, further comprising: a cluster configured to display information regarding a shift operation of the shift by wire device to the driver; a central gateway that interconnects the shift by wire device, the electronic parking brake, and the cluster that communicate heterogeneous network; and a backup line that connects a communication between the shift by wire device and the electronic parking brake when the failure event occurs. ### Claim 3 (depends on 1) The system of claim 1, wherein the shift by wire device includes: a control system configured to electronically input a shift stage of a parking stage, a reverse stage, a neutral stage, a drive stage, or a neutral parking stage; and a shift by wire controller configured to perform a shift control based on the shift stage. ### Claim 4 (depends on 3) The system of claim 3, wherein the electronic parking brake includes: an electronic parking brake switch configured to input a parking signal under a manual control of the driver or a predetermined stop condition of the vehicle; and an electronic parking brake controller configured to operate the brake using the relay to adjust the brake to be in the parking brake state when the parking signal is input. ### Claim 5 (depends on 4) The system of claim 4, wherein the shift by wire controller is configured to request the electronic parking brake controller to perform a parking release control when any one of the reverse stage, the neutral stage, the drive stage, and the neutral parking other than the parking stage is received from the control system in the parking control state of the vehicle. ### Claim 6 (depends on 4) The system of claim 4, wherein the electronic parking brake controller is configured to transmit the failure event to the shift by wire controller when the electronic parking brake controller fails to perform the parking control or the parking release control based on a cooperative control request of the shift by wire controller. ### Claim 7 (depends on 4) The system of claim 4, wherein the electronic parking brake controller is configured to detect the failure event when a voltage difference of the relay driving the brake, which the electronic parking brake controller monitors via self-diagnosis, exceeds a predetermined range. ### Claim 8 (depends on 1) The system of claim 1, wherein the relay transmits a parking control command of the electronic parking brake to the brake at a normal time, and transmits a parking control command of the shift by wire device to the brake in an emergency related to the failure event. ### Claim 9 (depends on 1) The system of claim 1, wherein the relay includes a first relay and a second relay that selectively connect the electronic parking brake and the shift by wire device to the brake during the parking control of the vehicle. ### Claim 10 A method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: requesting, by a shift by wire device, a parking control of the vehicle to an electronic parking brake when a parking stage is input by an operation of a driver of the vehicle; confirming, by the electronic parking brake, monitoring information of the electronic parking brake based on the parking control request to detect a failure event; transmitting, by the electronic parking brake, the failure event to a shift by wire device to request cooperative control; and switching, by the shift by wire device, a relay that is connected to directly operate a brake installed on a drive wheel to be in a parking brake state when the shift by wire device receives the failure event from the electronic parking brake. ### Claim 11 (depends on 10) The method of claim 10, wherein the switching includes: operating, by the electronic parking brake, the brake via the relay to be in the parking brake state when the electronic parking brake detects a normal operation. ### Claim 12 (depends on 10) The method of claim 10, wherein the switching includes: operating, by the shift by wire device, a first motor on caliper and a second motor on caliper mounted on both drive wheels of the vehicle to be in the parking brake state via a first relay and a second relay that are switched to the shift by wire device when the failure event is detected. ### Claim 13 (depends on 10) The method of claim 10, wherein confirming the monitoring information includes: detecting, by an electronic parking brake controller of the electronic parking brake, the failure event when a voltage difference of the relay driving the brake, which the electronic parking brake controller monitors via self-diagnosis, exceeds a predetermined range. ### Claim 14 (depends on 10) The method of claim 10, further comprising: requesting, by the shift by wire device, parking release to the electronic parking brake when a shift stage except the parking stage is input by an operation of the driver; confirming, by the electronic parking brake, monitoring information of the electronic parking brake according to the parking release request to determine whether the failure event occurs; operating, by the electronic parking brake, the brake via the relay to be in a parking brake release state when the electronic parking brake detects the normal operation; and switching, by the shift by wire device, the relay to directly operate the brake to be in the parking brake release state when the shift by wire device receives a failure event from the electronic parking brake. ### Claim 15 (depends on 10) The method of claim 10, wherein the switching includes: receiving, by the shift by wire device, the failure event from the electronic parking brake via a duplicated backup line. ### Claim 16 A method for parking control of a vehicle in which a transmission parking configuration is omitted, comprising: receiving, by an electronic parking brake, a signal of an electronic parking brake switch of the electronic parking brake input by a driver of the vehicle; confirming, by the electronic parking brake, monitoring information of the electronic parking brake according to the input signal of the electronic parking brake switch to determine whether a failure event occurs; transmitting, by the electronic parking brake, the failure event to a shift by wire device to request cooperative control; and switching, by the shift by wire device, a relay that is connected to directly operate a brake installed on a drive wheel to be in a parking brake state when the shift by wire device receives the failure event from the electronic parking brake.