Apparatus and method for controlling electronic parking brake

Patent metadata

Field	Value
Publication number	US-9522657-B2
Application number	US-201615009787-A
Country	US
Kind code	B2
Filing date	Jan 28, 2016
Priority date	Feb 3, 2015
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

An apparatus and method of controlling an electronic parking brake comprising detecting current wheel pulse counting signals when a vehicle rolls at a predetermined time interval for a predetermined time period after a parking operation for parking is clamped, receiving the detected current wheel pulse counting signals continuously at a predetermined time interval for a next time period after the predetermined time period and detecting the continuously-cumulated current wheel pulse cumulative counting signals; determining whether the detected current wheel pulse counting signals are predetermined target wheel pulse counting signals or determining whether the detected current wheel pulse cumulative counting signals are predetermined target wheel pulse cumulative counting signals; and if it is determined that the current wheel pulse counting signals or the current wheel pulse cumulative counting signals are the target counting signals, respectively, driving the electronic parking brake so as to re-clamp the parking operation.

First claim

What is claimed is:

1. An apparatus for controlling an electronic parking brake, the apparatus comprising:
a first detection unit that detects current wheel pulse counting signals when a vehicle rolls at a predetermined time interval for a predetermined time period after a parking operation for parking is clamped;
a second detection unit that continuously receives the detected current wheel pulse counting signals at a predetermined time interval for a next time period after the predetermined time period and detects the continuously-cumulated current wheel pulse cumulative counting signals;
a determination unit that determines whether the detected current wheel pulse counting signals are predetermined target wheel pulse counting signals or determines whether the detected current wheel pulse cumulative counting signals are predetermined target wheel pulse cumulative counting signals;
a driving unit that drives the electronic parking brake so as to re-clamp the parking operation if it is determined that the current wheel pulse counting signals are the target wheel pulse counting signals or the current wheel pulse cumulative counting signals are the target wheel pulse cumulative counting signals; and
a controller that transmits a first detection instruction to the first detection unit, transmits a second detection instruction to the second detection unit, transmits a determination instruction to the determination unit and transmits a driving instruction to the driving unit.

2. The apparatus according to claim 1 , wherein the controller further transmits a reset instruction to the second detection unit so as to reset the current wheel pulse cumulative counting signals if the current wheel pulse counting signals are the target wheel pulse counting signals.

3. The apparatus according to claim 2 , wherein the controller performs a plurality of re-clamping operations.

4. The apparatus according to claim 1 , wherein the controller further transmits a reset instruction to the first detection unit so as to reset the current wheel pulse counting signals if the current wheel pulse cumulative counting signals are the target wheel pulse cumulative counting signals.

5. The apparatus according to claim 4 , wherein the controller performs a plurality of re-clamping operations.

6. The apparatus according to claim 1 , wherein the first detection unit further detects the current wheel pulse counting signals in real time while a turn-on state of the controller is maintained even when starting of a vehicle is turned off.

7. The apparatus according to claim 6 , wherein the controller performs a plurality of re-clamping operations.

8. The apparatus according to claim 1 , wherein the second detection unit further detects the current wheel pulse cumulative counting signals in real time while a turn-on state of the controller is maintained even when starting of a vehicle is turned off.

9. The apparatus according to claim 8 , wherein the controller performs a plurality of re-clamping operations.

10. The apparatus according to claim 1 , further comprising a communication unit that communicates with a driver's portable mobile terminal device according to control of the controller,
wherein, if the current wheel pulse counting signals are not the target wheel pulse counting signals, the communication unit transmits communication signals to the driver's portable mobile terminal device so that the driver's portable mobile terminal device identifies that a current parking state is unstable.

11. The apparatus according to claim 1 , further comprising a communication unit that communicates with a driver's portable mobile terminal device according to control of the controller,
wherein, if the current wheel pulse cumulative counting signals are not the target wheel pulse cumulative counting signals, the communication unit transmits communication signals to the driver's portable mobile terminal device so that the driver's portable mobile terminal device identifies that a current parking state is unstable.

12. The apparatus according to claim 1 , further comprising a communication unit that communicates with a driver's portable mobile terminal device according to control of the controller,
wherein, if the current wheel pulse counting signals are the target wheel pulse counting signals, the communication unit transmits communication signals to the driver's portable mobile terminal device so that the driver's portable mobile terminal device identifies that a current situation is a situation in which the parking operation is to be re-clamped.

13. The apparatus according to claim 1 , further comprising a communication unit that communicates with a driver's portable mobile terminal device according to control of the controller,
wherein, if the current wheel pulse cumulative counting signals are the target wheel pulse cumulative counting signals, the communication unit transmits communication signals to the driver's portable mobile terminal device so that the driver's portable mobile terminal device identifies that a current situation is a situation in which the parking operation is to be re-clamped.

14. The apparatus according to claim 1 , further comprising a communication unit that communicates with a driver's portable mobile terminal device according to control of the controller,
wherein the communication unit transmits communication signals to the driver's portable mobile terminal device so that the driver's portable mobile terminal device identifies that a current parking state is stable, when the parking operation is to be re-clamped.

15. The apparatus according to claim 1 , wherein the first detection unit detects wheel pulse signals, and the second detection unit detects signals excluding the wheel pulse signals.

16. The apparatus according to claim 1 , wherein the controller performs a plurality of re-clamping operations.

17. A method of controlling an electronic parking brake, the method comprising:
detecting current wheel pulse counting signals when a vehicle rolls at a predetermined time interval for a predetermined time period after a parking operation for parking is clamped, or receiving the detected current wheel pulse counting signals continuously at a predetermined time interval for a next time period after the predetermined time period and detecting the continuously-cumulated current wheel pulse cumulative counting signals;
determining whether the detected current wheel pulse counting signals are predetermined target wheel pulse counting signals or determining whether the detected current wheel pulse cumulative counting signals are predetermined target wheel pulse cumulative counting signals; and

if it is determined that the current wheel pulse counting signals are the target wheel pulse counting signals or the current wheel pulse cumulative counting signals are the target wheel pulse cumulative counting signals, driving the electronic parking brake so as to re-clamp the parking operation.

Assignees

• Mando Corp

Inventors

• No Su-Hwan

Classifications

• B60T7/12 Primary

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T8/171

  Detecting parameters used in the regulation; Measuring values used in the regulation · CPC title

• B60W10/192

  electric brakes · CPC title

• B60T7/122

  for locking of reverse movement · CPC title

• B60T13/74 Primary

  with electrical assistance or drive · CPC title