KR20140014531A - Method and system for vehicle distance of vehicle - Google Patents
Method and system for vehicle distance of vehicle Download PDFInfo
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- KR20140014531A KR20140014531A KR1020120080712A KR20120080712A KR20140014531A KR 20140014531 A KR20140014531 A KR 20140014531A KR 1020120080712 A KR1020120080712 A KR 1020120080712A KR 20120080712 A KR20120080712 A KR 20120080712A KR 20140014531 A KR20140014531 A KR 20140014531A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- 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
- B60W30/14—Adaptive cruise control
- B60W30/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/12—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to parameters of the vehicle itself, e.g. tyre models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2422/00—Indexing codes relating to the special location or mounting of sensors
- B60W2422/70—Indexing codes relating to the special location or mounting of sensors on the wheel or the tyre
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2754/00—Output or target parameters relating to objects
- B60W2754/10—Spatial relation or speed relative to objects
- B60W2754/30—Longitudinal distance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/14—Cruise control
- B60Y2300/16—Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
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Abstract
차량의 타이어에 마련된 공기압센서를 통해 타이어공기압을 측정하는 체크단계; 상기 측정된 타이어공기압을 미리 마련된 공기압기준과 비교판단하는 판단단계; 상기 측정된 타이어공기압이 공기압기준보다 높은 경우, 차량의 오토크루즈 기능을 제어함에 있어서 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키는 상향보정단계; 및 상기 측정된 타이어공기압이 공기압기준보다 낮은 경우, 상기 최소차간거리를 감소시키는 하향보정단계;를 포함하는 차량의 차간거리 유지방법이 소개된다.A check step of measuring tire air pressure through an air pressure sensor provided in a tire of the vehicle; A determination step of comparing the measured tire air pressure with a preset air pressure reference; When the measured tire air pressure is higher than the air pressure reference, an upward correction step of increasing the minimum distance between the vehicle and the adjacent vehicle in controlling the auto cruise function of the vehicle; When the measured tire air pressure is lower than the air pressure reference, the down-compensation step for reducing the minimum inter-vehicle distance; a method for maintaining the inter-vehicle distance of a vehicle comprising a.
Description
본 발명은 오토크루즈를 통해 주행중 차량상태 및 주행환경을 고려하여 차간거리를 유지함으로써 운전자에게 안정성 및 편의성을 제공할 수 있는 차량의 차간거리 유지방법 및 시스템에 관한 것이다.
The present invention relates to a method and system for maintaining a distance between vehicles that can provide stability and convenience to a driver by maintaining a distance between vehicles in consideration of a vehicle condition and a driving environment while driving through an auto cruise.
일반적으로 차량의 오토크루즈는 운전자의 운행 편의성을 도모하기 위한 것으로서 별도의 가감속조작없이 운전자가 설정한 속도로 자동주행되도록 하는 것이다. 이러한, 오토크루즈는 점진적으로 개발됨에 따라 운전자의 편의성, 안정성 및 연비까지 고려할 수 있는 다양한 시스템으로 구현되고 있다.In general, the auto cruise of the vehicle is to promote the driver's convenience of driving and to automatically drive at the speed set by the driver without an additional acceleration / deceleration operation. As these auto cruises are gradually developed, they are implemented in various systems that can consider driver comfort, stability, and fuel economy.
종래의 오토크루즈는 차량이 자동으로 주행되도록 하되, 전방에 차량이 감지되는 경우 선행차량과의 충돌을 방지하기 위해 차량의 차간거리를 유지하도록 제어한다. 이로써, 선행차량과의 차간거리를 두어 앞차와의 충돌을 방지할 수 있었다.The conventional auto cruise is to allow the vehicle to run automatically, if the vehicle is detected in front of the vehicle to control the distance between the vehicle to prevent the collision with the preceding vehicle. As a result, it was possible to prevent a collision with the front vehicle by providing a distance between the preceding vehicle.
하지만, 종래의 오토크루즈 시스템은 선행차량과의 차간거리를 유지하되 항상 동일한 주행상태가 적용되어 실질적인 도로상태 또는 차량의 조건에 따른 실제 제동가능 거리가 반영되지 않는 문제점이 있었다.However, the conventional auto cruise system maintains the distance between the preceding vehicle and the same driving state is always applied, there is a problem that the actual braking distance according to the actual road conditions or vehicle conditions are not reflected.
구체적으로, 차량의 타이어는 혹한기 및 혹서기, 주행거리, 차량하중 등에 따라 타이어의 공기압이 변화될 수 있다. 만약, 차량의 타이어공기압이 과다하면 타이어와 도로노면의 접촉면적이 감소되어 제동성능이 감소되고 제동거리가 증가된다. 반면, 차량의 타이어공기압이 부족하면 타이어와 도로노면의 접촉면적이 증가되어 제동성능이 증가되고 이에 따라 제동거리가 감소된다. 이외에 차량의 주행속도 및 도로상태에 따라서도 제동거리가 상이하기 때문에 선행차량과의 충돌을 방지하기 위한 차간거리가 확보되지 않을 수 있다.Specifically, the tire of the vehicle may change the air pressure of the tire according to the cold weather, the cold weather, the mileage, the vehicle load, and the like. If the tire air pressure of the vehicle is excessive, the contact area between the tire and the road surface is reduced to reduce the braking performance and increase the braking distance. On the other hand, when the tire air pressure of the vehicle is insufficient, the contact area between the tire and the road surface is increased to increase the braking performance and thus the braking distance. In addition, since the braking distance is different depending on the driving speed and the road condition of the vehicle, the inter-vehicle distance for preventing a collision with the preceding vehicle may not be secured.
따라서, 오토크루즈 시스템을 이용하여 주행하되 차량의 상태 및 주행환경을 고려하여 적정 차간거리를 유지함으로써 운전자에게 안정성 및 편의성을 제공할 수 있는 기술이 필요하였다.
Accordingly, there is a need for a technology capable of providing stability and convenience to a driver by driving by using an auto cruise system but maintaining an appropriate inter-vehicle distance in consideration of the state of the vehicle and the driving environment.
상기의 배경기술로서 설명된 사항들은 본 발명의 배경에 대한 이해 증진을 위한 것일 뿐, 이 기술분야에서 통상의 지식을 가진자에게 이미 알려진 종래기술에 해당함을 인정하는 것으로 받아들여져서는 안 될 것이다.
It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.
본 발명은 이러한 문제점을 해결하기 위하여 제안된 것으로, 차량의 오토크루즈를 통해 주행시 차량상태 및 주행환경을 고려하여 차간거리를 유지함으로써 운전자에게 안정성 및 편의성을 제공할 수 있는 차량의 차간거리 유지방법 및 시스템을 제공하는데 그 목적이 있다.
The present invention has been proposed to solve such a problem, and the method of maintaining the inter-vehicle distance of the vehicle which can provide stability and convenience to the driver by maintaining the inter-vehicle distance in consideration of the vehicle condition and driving environment when driving through the auto cruise of the vehicle; The purpose is to provide a system.
상기의 목적을 달성하기 위한 본 발명에 따른 차량의 차간거리 유지방법은 차량의 타이어에 마련된 공기압센서를 통해 타이어공기압을 측정하는 체크단계; 상기 측정된 타이어공기압을 미리 마련된 공기압기준과 비교판단하는 판단단계; 상기 측정된 타이어공기압이 공기압기준보다 높은 경우, 차량의 오토크루즈 기능을 제어함에 있어서 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키는 상향보정단계; 및 상기 측정된 타이어공기압이 공기압기준보다 낮은 경우, 상기 최소차간거리를 감소시키는 하향보정단계;를 포함한다.Method for maintaining a distance between vehicles according to the present invention for achieving the above object is a check step of measuring the tire air pressure through the air pressure sensor provided in the tire of the vehicle; A determination step of comparing the measured tire air pressure with a preset air pressure reference; When the measured tire air pressure is higher than the air pressure reference, an upward correction step of increasing the minimum distance between the vehicle and the adjacent vehicle in controlling the auto cruise function of the vehicle; And a downward correction step of reducing the minimum inter-vehicle distance when the measured tire air pressure is lower than an air pressure reference.
상기 공기압기준은 공기압에 관하여 미리 마련된 일정범위이며, 상기 판단단계는, 측정된 타이어공기압이 공기압기준 내에 있으면 미리 마련된 최소차간거리를 사용하는 정상단계;를 더 포함하고, 상기 상향보정단계는 측정된 타이어공기압이 공기압기준보다 높은 경우 최소차간거리를 증대시키고, 하향보정단계는 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시킬 수 있다.The pneumatic reference is a predetermined range prepared in advance with respect to the pneumatic pressure, the determining step further comprises a normal step of using a minimum gap distance prepared in advance, if the measured tire air pressure is within the pneumatic reference; When the tire air pressure is higher than the air pressure standard, the minimum clearance distance may be increased, and the downward correction step may reduce the minimum clearance distance when the measured tire air pressure is lower than the air pressure standard.
상기 하향보정단계는, 차량의 주행속도가 증가되는 경우 최소차간거리를 증대시키는 변동단계;를 더 포함할 수 있다.The downward correction step may further include a change step of increasing the minimum inter-vehicle distance when the driving speed of the vehicle is increased.
상기 하향보정단계는, 도로상태를 확인하고, 확인된 도로상태에 따라 제동거리가 증가된다고 판단되는 경우 최소차간거리를 증가시키는 변화단계;를 더 포함할 수 있다.The downward correction step may further include a change step of checking a road condition and increasing a minimum inter-vehicle distance if it is determined that the braking distance is increased according to the identified road condition.
한편, 상기의 목적을 달성하기 위한 본 발명에 따른 차량의 차간거리 유지시스템은 차량의 타이어에 마련되어 타이어공기압을 측정하는 공기압센서; 및 차량의 오토크루즈 기능이 구비되며, 타이어공기압에 대한 공기압기준이 미리 마련되고, 측정된 타이어공기압이 공기압기준보다 높은 경우 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키고, 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시키는 제어부;를 포함한다.On the other hand, the vehicle inter-vehicle distance maintenance system according to the present invention for achieving the above object is provided in the tire of the vehicle for measuring the tire air pressure; And the vehicle's auto cruise function, and the air pressure standard for the tire air pressure is prepared in advance, and when the measured tire air pressure is higher than the air pressure standard, the distance between the adjacent vehicle and the minimum distance to be maintained is increased, and the measured tire air pressure is increased. And a controller for reducing the minimum clearance distance when the pressure is lower than the air pressure reference.
차량의 주행속도를 측정하는 속도감지부;를 더 포함하고, 상기 제어부는 차량의 주행속도가 증가되는 경우 최소차간거리를 증대시킬 수 있다.A speed detecting unit for measuring the traveling speed of the vehicle further includes, The control unit may increase the minimum distance between the vehicle when the running speed of the vehicle increases.
도로상태를 확인하는 도로감지부;를 더 포함하고, 상기 제어부는 도로감지부를 통해 확인된 도로상태에 따라 제동거리가 증가된다고 판단되는 경우 최소차간거리를 증가시킬 수 있다.
The road detecting unit may further include a road detecting unit for checking a road state, and the controller may increase the minimum inter-vehicle distance when it is determined that the braking distance is increased according to the road state confirmed through the road detecting unit.
상술한 바와 같은 구조로 이루어진 차량의 차간거리 유지방법 및 시스템은 타이어공기압을 측정하고, 측정된 타이어공기압에 따라 인접하는 차량과 유지되어야 하는 최소차간거리를 조절함으로써 선행차량과의 안정된 차간거리를 유지하여 운전자에게 안전성을 제공할 수 있다.The method and system for maintaining the inter-vehicle distance of a vehicle having the above-described structure maintain a stable inter-vehicle distance from the preceding vehicle by measuring the tire air pressure and adjusting the minimum distance between the vehicle and the adjacent vehicle according to the measured tire air pressure. To provide safety to the driver.
또한, 차량의 주행상태 및 도로환경에 따라 최소차간거리를 조절함으로써 선행차량과의 안정된 차간거리가 유지되도록 할 수 있다.
In addition, it is possible to maintain a stable inter-vehicle distance with the preceding vehicle by adjusting the minimum inter-vehicle distance in accordance with the driving state and the road environment of the vehicle.
도 1은 본 발명의 일 실시예에 따른 차량의 차간거리 유지방법의 순서도.
도 2는 본 발명의 일 실시예에 따른 차량의 차간거리 유지시스템의 구성도.1 is a flowchart of a method for maintaining a distance between vehicles according to an exemplary embodiment of the present invention.
2 is a block diagram of a system for maintaining a distance between vehicles according to an embodiment of the present invention.
이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예에 따른 차량의 차간거리 유지방법 및 시스템에 대하여 살펴본다.Hereinafter, a method and a system for maintaining a distance between vehicles according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
도 1은 본 발명의 일 실시예에 따른 차량의 차간거리 유지방법의 순서도로서, 본 발명은 차량의 타이어에 마련된 공기압센서를 통해 타이어공기압을 측정하는 체크단계(S100); 상기 측정된 타이어공기압을 미리 마련된 공기압기준과 비교판단하는 판단단계(S200); 상기 측정된 타이어공기압이 공기압기준보다 높은 경우, 차량의 오토크루즈 기능을 제어함에 있어서 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키는 상향보정단계(S400); 및 상기 측정된 타이어공기압이 공기압기준보다 낮은 경우, 상기 최소차간거리를 감소시키는 하향보정단계(S500);를 포함한다.1 is a flow chart of a method for maintaining a distance between vehicles according to an embodiment of the present invention, the present invention check step (S100) for measuring the tire air pressure through the air pressure sensor provided in the tire of the vehicle; A determination step (S200) of comparing the measured tire air pressure with a preset air pressure reference; When the measured tire air pressure is higher than the air pressure reference, an upward correction step (S400) of increasing the minimum distance between the vehicle and the adjacent vehicle in controlling the auto cruise function of the vehicle; And a downward correction step S500 of reducing the minimum inter-vehicle distance when the measured tire air pressure is lower than an air pressure reference.
일반적인 오토크루즈는 주행 중 선행차량과의 차간거리를 감지하여 충돌이 발생하지 않는 범위내에서 차간거리를 유지하도록 되어있다. 하지만, 이러한 오토크루즈는 선행차량과의 차간거리를 유지하되 실질적인 차량상태 및 주행환경은 배제되었기 때문에 제동시 선행차량과의 충돌을 피할 수 있는 실제 제동가능 거리를 확보하는데 문제가 있었다.In general, the auto cruise is to detect the distance between the vehicle ahead and to maintain the distance within the range of collision does not occur. However, since the auto cruise maintains the distance between the preceding vehicle and the actual vehicle state and the driving environment are excluded, there is a problem in securing the actual braking distance to avoid collision with the preceding vehicle during braking.
따라서, 본 발명은 오토크루즈를 이용하여 주행함에 있어서, 실질적인 차량상태 및 주행환경을 고려하여 운전자에게 보다 안정적인 오토크루즈를 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a more stable auto cruise to the driver in consideration of the actual vehicle state and the driving environment in driving by using the auto cruise.
이러한 목적을 달성하기 위한 본 발명은 차량의 타이어공기압에 따라 선행차량과의 충돌을 피할 수 있는 제동가능 거리가 확보되도록 차간거리를 유지하도록 한다.The present invention for achieving this object is to maintain the inter-vehicle distance to ensure the braking distance that can avoid collision with the preceding vehicle in accordance with the tire air pressure of the vehicle.
본 발명에 대해서 구체적으로 설명하면, 차량의 타이어에 마련된 공기압센서를 통해 타이어공기압을 측정하는 체크단계(S100)와 상기 측정된 타이어공기압을 미리 마련된 공기압기준과 비교판단하는 판단단계(S200)를 수행한다. 여기서, 타이어공기압을 측정하는 공기압센서는 TPMS(tire pressure monitoring system)가 사용될 수 있으며, 차량이 시동되는 동시에 타이어의 공기압을 실시간으로 측정한다.In more detail with respect to the present invention, the check step (S100) of measuring the tire air pressure through the air pressure sensor provided in the tire of the vehicle and the determination step (S200) of comparing the measured tire air pressure with a pre-prepared air pressure reference is performed do. Here, the air pressure sensor for measuring the tire air pressure may be used a TPMS (tire pressure monitoring system), and at the same time as the vehicle starts to measure the air pressure of the tire in real time.
차량이 오토쿠르즈 기능을 통해 주행중 인접하는 차량과 최소차간거리를 유지하되 측정된 타이어공기압이 공기압기준보다 높은 경우 최소차간거리를 증대시키는 상향보정단계(S400)를 수행하고, 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시키는 하향보정단계(S500)을 수행하도록 한다.While the vehicle maintains the minimum distance between the vehicle and the adjacent vehicle while driving through the auto-cruise function, if the measured tire air pressure is higher than the air pressure standard, an upward correction step (S400) is performed to increase the minimum distance between the vehicles and the measured tire air pressure is the air pressure. If lower than the reference to perform the downward correction step (S500) to reduce the minimum distance.
통상적으로, 타이어공기압이 과다할 경우 타이어와 노면간에 접촉되는 면적이 감소되어 제동거리가 증가하고, 타이어공기압이 부족할 경우 타이어와 노면간에 접촉되는 면적이 증가되어 제동거리가 감소하게 된다. 따라서, 본 발명은 측정된 타이어공기압이 공기압기준보다 높을 경우 최소차간거리를 증대시키고, 낮을 경우 최소차간거리를 감소시킴으로써 선행차량과의 충돌을 회피할 수 있는 최적의 차간거리를 유지할 수 있는 것이다.
In general, when the tire air pressure is excessive, the area between the tire and the road surface is reduced to increase the braking distance, and when the tire air pressure is insufficient, the area between the tire and the road surface is increased to reduce the braking distance. Accordingly, the present invention can maintain the optimum inter-vehicle distance to avoid collision with the preceding vehicle by increasing the minimum inter-vehicle distance when the measured tire air pressure is higher than the pneumatic reference, and by reducing the minimum inter-vehicle distance when the measured tire air pressure is higher than the pneumatic standard.
한편, 상기 공기압기준은 공기압에 관하여 미리 마련된 일정범위로 설정되도록 한다. 일반적으로 차량의 타이어는, 차량 및 타이어에 따라 적합한 특정 타이어공기압이 유지되는 것이 바람직하지만, 실질적으로 차량하중 및 다양한 조건에 의해 특정 타이어공기압을 유지하기가 어렵다. 따라서, 공기압기준은 이러한 조건을 고려하여 적정범위 내로 설정되는 것이 바람직하다.On the other hand, the air pressure reference is set to a predetermined range prepared in advance with respect to the air pressure. In general, the tire of the vehicle preferably maintains a specific tire air pressure suitable for the vehicle and the tire, but it is difficult to substantially maintain the specific tire air pressure due to the vehicle load and various conditions. Therefore, the air pressure reference is preferably set within an appropriate range in consideration of these conditions.
이렇게 일정범위로 설정된 공기압기준을 토대로, 본 발명은 측정된 타이어공기압이 일정범위 내에 있으면 미리 마련된 최소차간거리를 사용하고, 측정된 타이어공기압이 일정범위보다 높은 경우 최소차간거리를 증대시키며, 낮은 경우에는 최소차간거리를 감소시킴으로써 선행차량과 최적의 차간거리가 유지되도록 할 수 있다.
Based on the pneumatic criteria set in a certain range, the present invention uses a minimum distance provided in advance if the measured tire air pressure is within a predetermined range, and increases the minimum distance when the measured tire air pressure is higher than a predetermined range, By reducing the minimum inter-vehicle distance, the optimum inter-vehicle distance can be maintained with the preceding vehicle.
한편, 상기 하향보정단계(S500)는, 차량의 주행속도가 증가(602)되는 경우 최소차간거리를 증대시키는 변동단계(S604);를 더 포함할 수 있다.On the other hand, the downward correction step (S500) may further include a variation step (S604) to increase the minimum distance when the vehicle speed is increased (602).
일반적으로 차량의 주행속도가 증가하면 차량이 제동되는 거리가 증가된다. 만약, 주행속도가 증가되어도 미리 마련된 최소차간거리를 유지하여 주행하게 되면 차량 제동시 선행차량과 충돌을 야기할 수 있다. 따라서, 차량의 주행속도가 증가되면 최소차간거리도 증대되도록 하는 것이 바람직하다.In general, as the traveling speed of the vehicle increases, the distance to which the vehicle is braked increases. If the driving speed is increased and the vehicle continues to maintain the predetermined minimum distance, it may cause a collision with the preceding vehicle when the vehicle is braked. Therefore, when the traveling speed of the vehicle is increased, it is desirable to increase the minimum inter-vehicle distance.
여기서, 측정된 타이어공기압이 공기압기준보다 높은 상태에서 주행속도가 증가되는 경우 상향보정단계보다 최소차간거리를 더 증대시키고, 공기압 기준보다 낮은 상태에서 주행속도가 증가되는 경우 하향보정단계보다 최소차간거리를 증대함으로써 선행차량과 충분한 차간거리를 두어 안정성을 확보하는 것이 바람직할 것이다.
Here, when the running speed is increased when the measured tire air pressure is higher than the air pressure standard, the minimum inter-vehicle distance is increased more than the up-correction step, and when the driving speed is increased when the tire air pressure is lower than the air pressure standard, the minimum inter-vehicle distance is lower than the downward correction step. It may be desirable to secure the stability by increasing the distance between the preceding vehicle and the preceding vehicle.
한편, 상기 하향보정단계(S500)는, 도로상태를 확인하고, 확인된 도로상태에 따라 제동거리가 증가된다고 판단(702)되는 경우 최소차간거리를 증가시키는 변화단계(S704);를 더 포함할 수 있다.On the other hand, the downward correction step (S500), checking the road condition, if it is determined that the braking distance is increased in accordance with the confirmed road condition (702) change step (S704) to increase the minimum inter-vehicle distance; Can be.
여기서, 도로상태는 우적센서, 휠 속도센서, 휠 슬립량감지 등을 통해 도로노면의 상태를 확인하거나 내비게이션 GPS, G센서를 통해 내리막길 또는 오르막길을 주행중인지 판단하여 최소차간거리를 조절할 수 있다. 즉, 우천시 또는 눈이 내리거나 내리막길의 경우 일반적으로 제동거리가 증가되는 바 최소차간거리를 증대하여 선행차량과의 차간거리를 충분히 확보하고, 오르막길의 경우 제동거리가 감소되기 때문에 최소차간거리를 감소하여 적정차간거리가 유지되도록 할 수 있는 것이다.
Here, the road condition may check the state of the road surface through a rain sensor, a wheel speed sensor, a wheel slip amount detection, or determine whether the vehicle is driving downhill or uphill through the navigation GPS or G sensor to adjust the minimum inter-vehicle distance. That is, in case of rain or snow or downhill roads, the braking distance is generally increased. Therefore, the minimum gap distance is increased to secure sufficient distance between the vehicle ahead and the uphill road has a minimum braking distance. It can be reduced to maintain the proper inter-vehicle distance.
한편, 본 발명의 차량의 차간거리 유지시스템은 차량의 타이어에 마련되어 타이어공기압을 측정하는 공기압센서(200); 및 차량의 오토크루즈 기능이 구비되며, 타이어공기압에 대한 공기압기준이 미리 마련되고, 측정된 타이어공기압이 공기압기준보다 높은 경우 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키고, 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시키는 제어부(100);를 포함한다.On the other hand, the inter-vehicle distance maintenance system of the vehicle of the present invention is provided on the tire of the vehicle
이러한, 본 발명은 오토크루즈를 이용하여 주행함에 있어서, 실질적인 차량상태를 고려하여 운전자에게 안정성을 제공하는데 그 목적이 있다. Such an object of the present invention is to provide stability to a driver in consideration of the actual vehicle state in driving by using an auto cruise.
구체적으로, 본 발명은 주행중 인접하는 차량과의 최소차간거리를 유지하되 측정된 타이어공기압이 공기압기준보다 높은 경우 최소차간거리를 증대시키고, 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시킴으로써 선행차량과의 충돌을 회피할 수 있는 최적의 차간거리를 유지하여 주행할 수 있다.
Specifically, the present invention maintains a minimum distance between adjacent vehicles while driving, but increases the minimum distance when the measured tire air pressure is higher than the pneumatic standard, and decreases the minimum distance when the measured tire air pressure is lower than the pneumatic standard. By doing so, it is possible to keep the optimum inter-vehicle distance that can avoid collision with the preceding vehicle.
한편, 차량의 주행속도를 측정하는 속도감지부(300);를 더 포함할 수 있고, 상기 제어부(100)는 차량의 주행속도가 증가되는 경우 최소차간거리를 증대시킬 수 있다.On the other hand, the
일반적으로 차량의 주행속도가 증가되면 차량이 제동되는 거리도 증가되기 때문에 최소차간거리를 더 증대함으로써 선행차량과 충분한 차간거리를 두어 안정성이 확보되도록 하는 것이 바람직할 것이다.
In general, when the driving speed of the vehicle increases, the distance to which the vehicle is braked also increases, so it may be desirable to further increase the minimum inter-vehicle distance to ensure stability by providing a sufficient inter-vehicle distance with the preceding vehicle.
한편, 도로상태를 확인하는 도로감지부(400);를 더 포함하고, 상기 제어부(100)는 도로감지부(400)를 통해 확인된 도로상태에 따라 제동거리가 증가된다고 판단되는 경우 최소차간거리를 증가시킬 수 있다.On the other hand, the
여기서, 도로감지부(400)는 우적센서, 휠 속도센서, 휠 슬립량감지, 내비게이션 GPS, G센서 등을 통해 도로상태를 판단할 수 있다. 즉, 우천시 또는 눈이 내리거나 내리막길의 경우 일반적으로 제동거리가 증가되는 바 최소차간거리를 증대하여 선행차량과의 차간거리를 충분히 확보하고, 오르막길의 경우 제동거리가 감소되기 때문에 최소차간거리를 감소하여 적정차간거리가 유지되도록 할 수 있다.
Here, the
본 발명은 특정한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 제공되는 본 발명의 기술적 사상을 벗어나지 않는 한도 내에서, 본 발명이 다양하게 개량 및 변화될 수 있다는 것은 당 업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.
While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.
S100 : 체크단계 S200 : 판단단계
S300 : 정상단계 S400 : 상향보정단계
S500 : 하향보정단계 S600 : 변동단계
S700 : 변화단계 100 : 제어부
200 : 공기압센서 300 : 속도감지부
400 : 도로감지부S100: check step S200: determination step
S300: normal step S400: upward correction step
S500: Downward correction step S600: Change step
S700: change step 100: control unit
200: air pressure sensor 300: speed detection unit
400: road detection unit
Claims (7)
상기 측정된 타이어공기압을 미리 마련된 공기압기준과 비교판단하는 판단단계(S200);
상기 측정된 타이어공기압이 공기압기준보다 높은 경우, 차량의 오토크루즈 기능을 제어함에 있어서 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키는 상향보정단계(S400); 및
상기 측정된 타이어공기압이 공기압기준보다 낮은 경우, 상기 최소차간거리를 감소시키는 하향보정단계(S500);를 포함하는 차량의 차간거리 유지방법.Check step (S100) for measuring the tire air pressure through the air pressure sensor provided on the tire of the vehicle;
A determination step (S200) of comparing the measured tire air pressure with a preset air pressure reference;
When the measured tire air pressure is higher than the air pressure reference, an upward correction step (S400) of increasing the minimum distance between the vehicle and the adjacent vehicle in controlling the auto cruise function of the vehicle; And
If the measured tire air pressure is lower than the air pressure reference, the down-compensation step (S500) for reducing the minimum inter-vehicle distance; maintaining the distance between vehicles.
상기 공기압기준은 공기압에 관하여 미리 마련된 일정범위이며,
상기 판단단계(S200)는, 측정된 타이어공기압이 공기압기준 내에 있으면 미리 마련된 최소차간거리를 사용하는 정상단계(S300);를 더 포함하고,
상기 상향보정단계(S400)는 측정된 타이어공기압이 공기압기준보다 높은 경우 최소차간거리를 증대시키고, 하향보정단계(S500)는 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시키는 것을 특징으로 하는 차량의 차간거리 유지방법.The method according to claim 1,
The air pressure reference is a predetermined range prepared in advance with respect to the air pressure,
The determining step (S200), if the measured tire air pressure is within the air pressure standard, the normal step (S300) using a minimum gap distance prepared in advance; further includes,
The upward correction step S400 increases the minimum gap distance when the measured tire air pressure is higher than the air pressure standard, and decreases the minimum gap distance when the measured tire air pressure is lower than the air pressure standard. How to maintain the distance between vehicles.
상기 하향보정단계(S500)는, 차량의 주행속도가 증가되는 경우 최소차간거리를 증대시키는 변동단계(S600);를 더 포함하는 것을 특징으로 하는 차량의 차간거리 유지방법.The method according to claim 1,
Wherein the downward correction step (S500), when the running speed of the vehicle increases the minimum inter-vehicle distance change step (S600); further comprising a vehicle-to-vehicle distance maintenance method.
상기 하향보정단계(S500)는, 도로상태를 확인하고, 확인된 도로상태에 따라 제동거리가 증가된다고 판단되는 경우 최소차간거리를 증가시키는 변화단계(S700);를 더 포함하는 것을 특징으로 하는 차량의 차간거리 유지방법.The method according to claim 1,
The downward correction step (S500), check the road condition, if it is determined that the braking distance is increased in accordance with the confirmed road condition change step (S700) for increasing the minimum distance; further comprises a vehicle To maintain the distance between cars.
차량의 오토크루즈 기능이 구비되며, 타이어공기압에 대한 공기압기준이 미리 마련되고, 측정된 타이어공기압이 공기압기준보다 높은 경우 인접하는 차량과 유지되어야 하는 최소차간거리를 증대시키고, 측정된 타이어공기압이 공기압기준보다 낮은 경우 최소차간거리를 감소시키는 제어부(100);를 포함하는 차량의 차간거리 유지시스템.An air pressure sensor 200 provided on a tire of the vehicle to measure tire air pressure; And
The vehicle's auto cruise function is provided, and the air pressure standard for the tire air pressure is prepared in advance, and when the measured tire air pressure is higher than the air pressure standard, the distance between the adjacent vehicles and the minimum distance to be maintained is increased, and the measured tire air pressure is the air pressure. And a control unit (100) for reducing the minimum inter-vehicle distance if lower than the reference.
차량의 주행속도를 측정하는 속도감지부(300);를 더 포함하고,
상기 제어부(100)는 차량의 주행속도가 증가되는 경우 최소차간거리를 증대시키는 것을 특징으로 하는 차량의 차간거리 유지시스템.The method according to claim 5,
Further comprising: a speed detecting unit 300 for measuring the traveling speed of the vehicle,
The control unit 100 maintains the inter-vehicle distance maintenance system of the vehicle, characterized in that to increase the minimum inter-vehicle distance when the running speed of the vehicle is increased.
도로상태를 확인하는 도로감지부(400);를 더 포함하고,
상기 제어부(100)는 도로감지부(400)를 통해 확인된 도로상태에 따라 제동거리가 증가된다고 판단되는 경우 최소차간거리를 증가시키는 것을 특징으로 하는 차량의 차간거리 유지시스템.The method according to claim 5,
Further comprising; road detection unit 400 for checking the road state,
The control unit 100 increases the minimum distance between vehicles when it is determined that the braking distance is increased according to the road state confirmed by the road detection unit 400.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20070103149A (en) * | 2006-04-18 | 2007-10-23 | 주식회사 현대오토넷 | Vehicle safety distance maintenance system and method |
| JP2009090718A (en) * | 2007-10-04 | 2009-04-30 | Denso Corp | Safety traveling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20070103149A (en) * | 2006-04-18 | 2007-10-23 | 주식회사 현대오토넷 | Vehicle safety distance maintenance system and method |
| JP2009090718A (en) * | 2007-10-04 | 2009-04-30 | Denso Corp | Safety traveling system |
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