KR101977458B1 - 레이더 센서와 upa 센서를 이용하는 충돌 예측 알고리즘 - Google Patents
레이더 센서와 upa 센서를 이용하는 충돌 예측 알고리즘 Download PDFInfo
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- KR101977458B1 KR101977458B1 KR1020170028375A KR20170028375A KR101977458B1 KR 101977458 B1 KR101977458 B1 KR 101977458B1 KR 1020170028375 A KR1020170028375 A KR 1020170028375A KR 20170028375 A KR20170028375 A KR 20170028375A KR 101977458 B1 KR101977458 B1 KR 101977458B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
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- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
- B60R21/01332—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value by frequency or waveform analysis
- B60R21/01338—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value by frequency or waveform analysis using vector analysis
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- B60—VEHICLES IN GENERAL
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- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
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- B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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Abstract
Description
도 2는 에어백 미작동 또는 오작동을 야기할 수 있는 대표적인 상황을 설명하기 위한 도면이다.
도 3은 레이더 센서와 UPA 센서가 장착되는 위치를 설명하기 위한 도면이다.
도 4는 칼만 필터를 이용하여 오차 공분산을 계산하는 과정을 설명하기 위한 도면이다.
도 5는 본 발명의 실시예에 따른 충돌 예측 알고리즘의 순서도를 개략적으로 나타낸 도면이다.
도 6은 Curve Fitting 방법을 이용하여 장애물의 이동 궤적을 3차 방정식으로 수식화하는 것을 설명하기 위한 도면이다.
도 7은 차량의 충돌유형 중 Edge Type의 충돌유형을 설명하기 위한 도면이다.
도 8은 차량의 충돌유형 중 Plane Type의 충돌유형을 설명하기 위한 도면이다.
도 9는 예측된 충돌유형과 장애물의 표면 기울기를 이용하여 에어백전개요구시간을 연산하는 과정을 나타낸 도면이다.
도 10 및 도 11은 Edge Type 충돌유형에서 차량 충돌지점과 장애물 충돌지점을 연산하는 것을 설명하기 위한 도면이다.
도 12 및 도 13은 Plane Type 충돌유형에서 차량 충돌지점과 장애물 충돌지점을 연산하는 것을 설명하기 위한 도면이다.
도 14는 레이더 센서 계측 데이터의 이동 궤적을 수식화하여 충돌시점을 연산하는 것을 설명하기 위한 도면이다.
도 15는 본 발명의 실시예에 따른 알고리즘의 구성요소를 설명하기 위한 블록도이다.
도 16은 본 발명의 실시예에 따른 알고리즘의 순서도이다.,
120: 차량 상태 추정 모듈
130: 충돌 예측 모듈
R: 레이더 센서
U: UPA 센서
Claims (5)
- 차량의 범퍼에 장착된 레이더 센서(R)와 적어도 하나의 UPA 센서(U1, U2, U3, U4)를 이용하여 충돌을 예측하는 알고리즘으로서,
(a) 상기 레이더 센서(R)와 상기 적어도 하나의 UPA 센서(U1, U2, U3, U4)가 장애물에 대한 좌표를 계측하는 단계;
(b) 좌표 보정 모듈(110)이 상기 적어도 하나의 UPA 센서(U1, U2, U3, U4)에 의해 계측된 좌표를 상기 레이더 센서의 좌표계에 맞추어 보정하는 단계;
(c) 차량 상태 추정 모듈(120)이 상기 차량이 상기 레이더 센서(R)의 장애물에 대한 최소계측영역(Minimum Detection Range) 이내로 진입하는 경우 칼만 필터를 이용하여 상기 차량의 속도, 위치 및 가속도를 추정하는 단계; 및
(d) 충돌 예측 모듈(130)이 차량이 장애물에 충돌하는 유형인 Edge Type 충돌과 Plane Type 충돌 중 어느 하나의 충돌유형을 예측하고, 상기 (b) 단계에서 추정된 속도, 위치 및 가속도와 상기 예측된 충돌유형을 이용하여 Curve Fitting 방법을 통해, 상기 차량의 3차원 이동 궤적 방정식을 연산하고, 연산된 이동 궤적 방정식을 이용하여 차량 충돌지점, 장애물 충돌지점 및 충돌시점을 예측하는 단계;를 포함하며,
상기 (d) 단계는,
(d1) 상기 충돌 예측 모듈(130)이 상기 적어도 하나의 UPA 센서(U1, U2, U3, U4)와 상기 장애물 사이의 거리(R1, R2, R3, R4)들 간 각각의 차이가 기 설정된 기준값 이하인 경우 Edge Type 충돌로 예측하고, 상기 적어도 하나의 UPA 센서(U1, U2, U3, U4)가 상기 장애물을 계측하는 지점의 좌표를 이용하여 직선의 방정식을 연산하고, 어느 하나의 UPA 센서가 계측한 장애물 좌표와 다른 하나의 UPA 센서가 계측한 장애물 좌표 간의 기울기가 상기 직선의 방정식의 기울기에 대해 미리 결정된 범위 안의 값인 경우 Plane Type 충돌로 예측하는 단계를 더 포함하는,
충돌 예측 알고리즘.
- 삭제
- 제1 항에 있어서,
(d2) 상기 (d1) 단계에서 Edge Type 충돌로 예측된 경우, 상기 충돌 예측 모듈(130)이 상기 차량의 범퍼의 형상을 데이터화한 N개의 좌표(XBumper, YBumper)를 이용하여, 연산된 이동 궤적 방정식에 상기 좌표의 YBumper 값을 대입하여 나온 값과 상기 좌표의 XBumper 값의 차이가 최소인 지점을 차량 충돌지점으로 예측하고, 상기 적어도 하나의 UPA 센서(U1, U2, U3, U4)와 상기 장애물과의 거리(R1, R2, R3, R4)의 합이 최소인 지점을 장애물 충돌지점으로 예측하는 단계를 더 포함하는,
충돌 예측 알고리즘.
- 제1 항에 있어서,
(d3) 상기 (d1) 단계에서 Plane Type 충돌로 예측된 경우, 상기 충돌 예측 모듈(130)이 상기 레이더 센서(R)에서 계측된 상대속도를 통해 속도벡터를 연산하고, 연산된 속도벡터와 상기 차량의 범퍼의 형상을 데이터화한 N개의 좌표(XBumper, YBumper)를 이용하여, 장애물 형상에 대한 방정식인 제1 직선 방정식과 상기 범퍼와 상기 장애물에 대한 방정식인 제2 직선 방정식을 연산하고, 상기 제2 직선 방정식 상의 어느 하나의 지점과 상기 제1 직선 방정식 사이의 거리를 연산하고, 연산된 거리가 최소인 지점을 차량 충돌지점으로 예측하고, 상기 연산된 이동 궤적 방정식과 상기 제1 직선 방정식의 교점을 장애물 충돌지점으로 예측하는 단계를 더 포함하는,
충돌 예측 알고리즘.
- 제3 항 또는 제4 항 중 어느 한 항에 있어서,
상기 레이더 센서(R)는 상기 차량의 종방향 상대속도(RX)를 계측하고,
(d4) 상기 충돌 예측 모듈(130)이 상기 계측된 n개의 종방향 상대속도(RX)와 상기 예측된 차량 충돌지점과 장애물 충돌지점을 이용하여 Curve Fitting 방법을 통해 시간에 따른 차량의 이동궤적 방정식을 연산하고, 상기 방정식의 값이 0이 되는 지점을 충돌시점으로 예측하는 단계를 더 포함하는,
충돌 예측 알고리즘.
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| DE102014207626B4 (de) | 2014-04-23 | 2022-09-15 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Bestimmen eines Aufprallorts eines Objekts auf einem Fahrzeug |
| KR101583927B1 (ko) | 2014-05-12 | 2016-01-11 | 현대자동차주식회사 | 외장에어백 전개방법 |
| KR102272076B1 (ko) * | 2014-10-24 | 2021-07-02 | 현대모비스 주식회사 | 스몰 오버랩 충돌에 따른 에어백 전개 방법 |
| US20160121887A1 (en) * | 2014-11-04 | 2016-05-05 | Hyundai Motor Company | Apparatus and method for detecting collision object of vehicle |
| US9610945B2 (en) * | 2015-06-10 | 2017-04-04 | Ford Global Technologies, Llc | Collision mitigation and avoidance |
| KR102286174B1 (ko) * | 2015-09-01 | 2021-08-06 | 주식회사 만도 | 운전 지원 장치 및 운전 지원 방법 |
| US9701307B1 (en) * | 2016-04-11 | 2017-07-11 | David E. Newman | Systems and methods for hazard mitigation |
-
2017
- 2017-03-06 KR KR1020170028375A patent/KR101977458B1/ko active Active
- 2017-11-17 US US15/816,464 patent/US11104285B2/en active Active
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2018
- 2018-03-02 CN CN201810174146.6A patent/CN108528442B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108528442B (zh) | 2021-11-12 |
| US11104285B2 (en) | 2021-08-31 |
| KR20180101872A (ko) | 2018-09-14 |
| US20180251092A1 (en) | 2018-09-06 |
| CN108528442A (zh) | 2018-09-14 |
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