WO2012157633A1 - 走行制御装置 - Google Patents
走行制御装置 Download PDFInfo
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- WO2012157633A1 WO2012157633A1 PCT/JP2012/062384 JP2012062384W WO2012157633A1 WO 2012157633 A1 WO2012157633 A1 WO 2012157633A1 JP 2012062384 W JP2012062384 W JP 2012062384W WO 2012157633 A1 WO2012157633 A1 WO 2012157633A1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
Definitions
- the present invention relates to a travel control device.
- This application claims priority based on Japanese Patent Application No. 2011-111354 filed in Japan on May 18, 2011, the contents of which are incorporated herein by reference.
- the timing when the average driver performs a deceleration operation, the timing when the alarm is activated are set to coincide with each other (see, for example, Patent Document 1 below). This is to prevent the driver from feeling annoying the timing at which the alarm is activated.
- the timing of the alarm is set to a certain time, for example, when the obstacle is stopped and it is in a very low speed range, it is more than the actual distance.
- an error may occur in the driver's sense of the vehicle, such as when an obstacle is felt nearby, and the alarm may not be activated at an appropriate timing for the driver.
- This vehicle-like error is that at very low speeds, the distance to the obstacle is closer, so the feeling of pressure against the obstacle becomes stronger, and the driver feels closer to the actual distance. Is attributed.
- the present invention has been made in view of the above problems, and one object of the present invention is a travel control capable of operating an alarm at an appropriate timing even when an error occurs in a driver's vehicle feeling. Is to provide a device.
- a travel control device includes a travel speed detection unit that detects the travel speed of the host vehicle and an object detection result by detecting an object around the host vehicle. Based on the object detection unit to be acquired, a collision time calculation unit that calculates a time until the object and the host vehicle collide based on the traveling speed and the object detection result, and the time until the collision
- An alarm unit that issues an alarm to the driver, wherein the alarm unit includes a reference alarm start time set in advance as a reference value for the time to start the alarm, and the driver's A predetermined distance set in advance as a minimum value of the vehicle sense error is obtained, and an alarm activation start threshold time is obtained by adding a time obtained by dividing the predetermined distance by the traveling speed to the reference alarm start time. , The alarm activation start threshold Performing the alarm to the driver based on the time until the collision with.
- the alarm unit may perform the alarm to the driver based on the alarm activation start threshold time only at an extremely low vehicle speed.
- a travel control device includes a travel speed detection unit that detects the travel speed of the host vehicle, an object detection unit that detects an object around the host vehicle and acquires an object detection result.
- a collision distance calculation unit that calculates a distance until the object and the host vehicle collide based on the traveling speed and the object detection result, and alerts the driver based on the distance until the collision.
- a warning control unit that performs a warning control, and the warning unit includes a reference warning start distance that is preset as a reference value of a distance at which the warning is started, and a minimum error in the vehicle sense of the driver.
- a predetermined distance set in advance as a value add the predetermined distance to the reference alarm start distance to obtain an alarm activation start threshold distance, and the distance from the alarm activation start threshold distance to the collision To the driver based on It performs the alarm.
- the alarm unit may perform the alarm to the driver based on the alarm activation start threshold distance only at an extremely low vehicle speed.
- a travel control device includes a travel speed detection unit that detects the travel speed of the host vehicle, an object detection unit that detects an object around the host vehicle and acquires an object detection result.
- a relative speed detection unit that detects a relative speed between the host vehicle and the object, and a collision distance calculation that calculates a distance until the object and the host vehicle collide based on the travel speed and the object detection result.
- a warning control unit that warns the driver based on the distance until the collision, wherein the warning unit is set in advance as a reference value for the time to start the warning.
- the reference alarm start time and a predetermined distance set in advance as the minimum value of the driver's vehicle sense error are acquired, and the relative speed between the host vehicle and the object is obtained with respect to the reference alarm start time.
- the alarm is activated by adding the divided time. Seeking the threshold time, it performs the alarm to the driver based on the time until the collision with between the alarm operation start threshold time.
- the alarm unit may perform the alarm to the driver based on the alarm activation start threshold time only when the relative speed is extremely low.
- the alarm activation start threshold time becomes longer as the host vehicle speed is lower than when the host vehicle speed is high, and the alarm is started earlier. For this reason, it is possible to improve the merchantability by operating the alarm at an appropriate timing according to the driver's vehicle sense error.
- the alarm activation start threshold distance is determined. It can be increased by the distance. For this reason, it is possible to improve the merchantability by operating the alarm at an appropriate timing according to the driver's vehicle sense error.
- an alarm in addition to the effect (3) above, an alarm can be activated at an appropriate timing especially at an extremely low vehicle speed with a large error in the vehicle sense of the driver.
- the alarm activation start threshold time becomes longer and the alarm starts as the relative speed between the host vehicle and the object is lower than when the relative speed between the host vehicle and the object is higher.
- the timing will be early. For this reason, even when the host vehicle is approaching an object that is moving at the same speed as the traveling host vehicle, an alarm is activated at an appropriate timing according to the error of the driver's sense of vehicle. Can be made.
- the alarm is activated at an appropriate timing particularly when the relative speed between the host vehicle and the object having a large error in the vehicle sense of the driver is extremely low. Can do.
- FIG. 1 shows schematic structure of the traveling control apparatus in 1st Embodiment of this invention. It is a flowchart of the alarm timing determination process of the said travel control apparatus. It is a figure which shows the limit approach distance for every driver
- the travel control device 1 of this embodiment includes an external sensor (object detection unit) 11, a host vehicle sensor (travel speed detection unit) 12, an alarm generation device 13, and an electronic control device 20. It has.
- the external sensor 11 is, for example, a millimeter-wave band radar device, a laser radar device using a wavelength band near the infrared light band, an image recognition device using one or more camera devices, or a combination thereof. It is configured. Object information (position, speed, traveling direction, size, etc.) around the host vehicle is detected at a predetermined time interval (for example, 100 msec). The external sensor 11 outputs the detection result to the electronic control unit 20.
- a predetermined time interval for example, 100 msec.
- the own vehicle sensor 12 includes sensors for detecting information on the own vehicle such as the vehicle speed, the steering amount, the accelerator opening degree, the brake pedal switch ON / OFF, the blinker switch ON / OFF, and the like.
- the detection result is output to the electronic control unit 20. It is possible to estimate the yaw rate that will occur in the vehicle in the future based on the steering amount. Further, it is possible to estimate the acceleration / deceleration that will occur in the vehicle in the future based on the accelerator opening and the ON / OFF of the brake pedal switch.
- the information on the host vehicle may be detected directly from each sensor, or may be acquired via various ECUs or in-vehicle LANs mounted on the host vehicle.
- the alarm generation device 13 is a device that issues an alarm to a passenger (in particular, a driver) of the host vehicle.
- the alarm generation device 13 can be constituted by, for example, a buzzer that emits an alarm sound or synthesized sound in accordance with a control signal output from the electronic control device 20, a speaker, a display device that displays an alarm, or the like.
- the alarm generator 13 prompts the driver of the host vehicle to avoid contact by generating an alarm.
- the electronic control unit 20 determines the time until the host vehicle and the preceding vehicle come into contact based on various information on the preceding vehicle input from the external sensor 11 and various information on the host vehicle input from the own vehicle sensor 12. Is calculated. Based on this result, the electronic control unit 20 determines the timing for issuing a warning, and determines whether or not it is necessary to issue a warning to the passenger of the host vehicle. When it is determined that it is necessary to perform an alarm, the electronic control device 20 outputs an alarm command to the alarm generation device 13.
- the electronic control unit 20 includes, for example, a relative relationship calculation unit 21, a TTC calculation unit (collision time calculation unit) 22, and an alarm timing determination unit (alarm unit) 24.
- the relative relationship calculation unit 21 for example, information on the preceding vehicle (position, speed, traveling direction, size) input from the external sensor 11 and own vehicle information (position, speed, traveling direction) input from the own vehicle sensor 12. And the relative distance and relative speed between the host vehicle and the preceding vehicle are calculated and output to the TTC calculation unit 22.
- the TTC calculation unit 22 determines whether or not the host vehicle and the preceding vehicle may come into contact based on the predicted course, the relative distance, and the relative speed of the host vehicle and the preceding vehicle input from the relative relationship calculation unit 21.
- the time until contact that is, the collision time TTC is calculated and output to the alarm timing determination unit 24.
- the alarm timing determination unit 24 issues an alarm based on, for example, the collision time TTC input from the TTC calculation unit 22, the vehicle speed of the host vehicle input from the host vehicle sensor 12, and a preset reference alarm start time.
- the timing to perform is determined and output to the alarm generator 13.
- step S1 vehicle speed information is acquired from the own vehicle sensor.
- step S2 information on the reference alarm start time stored in advance in a storage device (not shown) such as a memory is read and acquired.
- the reference alarm start time is a reference value for calculating an alarm operation start threshold time (alarm operation time) that is a threshold of the collision time TTC, and is a time (for example, 1) according to various conditions such as the vehicle type of the host vehicle. .. about 2 seconds).
- the predetermined distance set in advance means that the distance between the host vehicle and the preceding vehicle is a short distance, and the vehicle speed of the host vehicle is extremely low (higher than 0 km / h, up to around 5 km / h). This is a value determined by statistically looking at the error of the driver's vehicle feeling that occurs in the case of (region).
- FIG. 3 shows the limit approach distance (vertical axis) of the host vehicle with respect to a stationary preceding vehicle (obstacle), and symbols A to E (horizontal axis) indicate drivers having different driving experiences.
- the minimum value of the limit approach distance is a value slightly larger than 0.5.
- the driver's sense of vehicle error is the difference between the limit approach distance where the TTC that cannot actually approach further is 0 seconds (see FIG. 4A) and the distance that the driver thinks that the driver can no longer approach (see FIG. 4B). Even if the driving experience is abundant like the driver B, it is difficult to approach the above-mentioned 0.5 m.
- the collision time TTC is 1.44 seconds.
- the divided time is added to the reference alarm start time.
- an appropriate distance may be set according to conditions such as the shape and size of the host vehicle. Further, since the magnitude of the vehicle sense error varies depending on the driving experience, an arbitrary distance may be set according to the driving experience of the driver.
- FIG. 5 shows a graph when the vertical axis represents the alarm activation start threshold time (s), the horizontal axis represents the vehicle speed (km / h) of the host vehicle, and the reference alarm start time is 1.2 seconds. As can be seen from this graph, in the region where the vehicle speed is low, the rate of increase of the alarm activation start threshold time is increased and the alarm start timing is advanced.
- step S4 it is determined whether or not the collision time TTC calculated by the TTC calculation unit 22 is equal to or shorter than the alarm activation start threshold time.
- this determination result is “No” (TTC> alarm activation start threshold time)
- the execution of this routine is temporarily ended.
- the determination result in step S4 is “Yes” (TTC ⁇ alarm operation start threshold time)
- the process proceeds to step S5, where an alarm is issued, and execution of this routine is temporarily terminated.
- the alarm timing determination unit obtains the alarm activation start threshold time by adding the value obtained by dividing the predetermined distance by the traveling speed to the preset reference alarm start time.
- the timing at which the alarm is started can be accelerated as the host vehicle speed is low. For this reason, it is possible to improve the merchantability by starting the alarm at an appropriate timing according to an error in the vehicle sense of the driver.
- the travel control device of this embodiment replaces the determination of the alarm timing based on the collision time TTC performed in the above-described first embodiment with the determination of the alarm timing based on the collision distance.
- a reference numeral is attached and a duplicate description is omitted.
- the travel control device 100 of this embodiment includes, for example, an external sensor (object detection unit) 11, a host vehicle sensor (travel speed detection unit) 12, an alarm generation device 13, and an electronic control device. 30.
- the electronic control unit 30 determines the time until the host vehicle and the preceding vehicle come into contact based on various information on the preceding vehicle input from the external sensor 11 and various information on the own vehicle input from the own vehicle sensor 12. calculate. Based on this, the timing for alarming is determined, it is determined whether or not it is necessary to alert the passenger of the own vehicle, and when it is determined that the alarm needs to be performed, the alarm generator 13 is warned. Outputs a command.
- the electronic control unit 30 includes a relative relationship calculation unit (relative relationship calculation unit) 21, a collision distance calculation unit (collision distance calculation unit) 32, and an alarm timing determination unit (alarm unit) 34.
- relative relationship calculation unit 21 is the same structure as 1st Embodiment mentioned above, description here is abbreviate
- the collision distance calculation unit 32 determines whether or not the host vehicle and the preceding vehicle may come into contact based on the predicted course, the relative distance, and the relative speed of the host vehicle and the preceding vehicle input from the relative relationship calculation unit 21. When there is a possibility of contact, a distance until contact (that is, a collision distance) is calculated and output to the alarm timing determination unit 34.
- the warning timing determination unit 34 determines the timing for warning based on the collision distance input from the collision distance calculation unit 32, the vehicle speed of the host vehicle input from the host vehicle sensor 12, and the reference alarm start distance. Output to the alarm generator 13.
- step S11 vehicle speed information is acquired from the host vehicle sensor.
- step S12 based on the vehicle speed and a preset alarm reference time (for example, about 1.2 seconds), a reference alarm start distance that is a distance traveled by the vehicle during the reference time is determined. calculate.
- an alarm activation start threshold distance is calculated based on the vehicle speed information and the reference alarm start distance information. More specifically, as shown in the following equation (2), the alarm activation start threshold distance is calculated by adding a predetermined distance 0.5 (m) set in advance to the reference alarm start distance.
- Alarm activation start threshold distance reference alarm start distance + predetermined distance (2)
- the predetermined distance set in advance is the same as in the first embodiment described above when the distance between the host vehicle and the preceding vehicle is a short distance and the vehicle speed of the host vehicle is the above-described extremely low vehicle speed. This is a value determined by statistically looking at the error of the driver's sense of vehicle. Since an error in the vehicle sense varies depending on the shape and size of the host vehicle, an appropriate distance may be set according to conditions such as the shape and size of the host vehicle. Further, since the magnitude of the vehicle sense error varies depending on the driving experience, an arbitrary distance may be set according to the driving experience of the driver.
- step S14 it is determined whether or not the collision distance calculated by the collision distance calculation unit 32 is equal to or less than the alarm activation start threshold distance.
- this determination result is “No” (collision distance> alarm activation start threshold distance)
- the execution of this routine is temporarily ended.
- the determination result in step S14 is “Yes” (collision distance ⁇ alarm activation start threshold distance)
- the process proceeds to step S15 to give an alarm, and the execution of this routine is temporarily terminated.
- the lower the traveling speed of the host vehicle the longer the reference alarm start distance.
- a predetermined distance which is the minimum value of the driver's vehicle sense error is added to the reference alarm start distance to obtain the alarm activation start threshold distance. For this reason, even when the traveling speed of the host vehicle is low and the collision distance becomes extremely short and an error is likely to occur in the driver's vehicle feeling, the alarm activation start threshold distance can be increased by a predetermined distance. . For this reason, it is possible to improve the merchantability by operating an alarm at an appropriate timing according to an error in the vehicle sense of the driver.
- the travel control device of this embodiment includes an external sensor 11, a host vehicle sensor 12, an alarm generation device 13, and an electronic control device 20.
- the electronic control unit 20 includes a relative relationship calculation unit (relative speed detection unit) 21, a TTC calculation unit (collision time calculation unit) 22, and an alarm timing determination unit (alarm unit) 24.
- the relative relationship calculation unit 21 is based on the preceding vehicle information (position, speed, traveling direction, size) input from the external sensor 11 and the own vehicle information (position, speed, traveling direction) input from the own vehicle sensor 12. In addition, the course of the host vehicle and the preceding vehicle is predicted, and the relative distance and the relative speed between the host vehicle and the preceding vehicle are calculated and output to the TTC calculation unit 22.
- the TTC calculation unit 22 determines whether there is a possibility that the host vehicle and the preceding vehicle are in contact with each other based on the predicted course, the relative distance, and the relative speed between the host vehicle and the preceding vehicle input from the relative relationship calculation unit 21. When there is a possibility of this, the collision time TTC is calculated, and information on the collision time TTC and the relative speed between the host vehicle and the preceding vehicle is output to the alarm timing determination unit 24.
- the alarm timing determination unit 24 determines the timing for alarming based on the collision time TTC and relative speed input from the TTC calculation unit 22 and a preset reference alarm start time, and outputs the alarm timing to the alarm generation device 13. .
- step S21 information on the relative speed between the host vehicle and the preceding vehicle is acquired from the TTC calculation unit 22.
- the relative speed information may be acquired from the relative relationship calculation unit 21.
- step S22 information of a reference alarm start time (for example, about 1.2 seconds) stored in advance in a storage device (not shown) such as a memory is read and acquired.
- This reference alarm start time is a reference value for calculating an alarm activation start threshold time that is a threshold of the collision time TTC, similarly to the reference alarm start time described in the first embodiment.
- the predetermined distance set in advance means that the distance between the host vehicle and the preceding vehicle is a short distance, and the relative speed between the host vehicle and the preceding vehicle is extremely low (a speed higher than 0 km to about 5 km / h).
- This is a value determined by statistically looking at the error of the driver's vehicle feeling that occurs in the case of (region).
- the error in the driver's sense of vehicle becomes large when the relative speed between the host vehicle and the preceding vehicle is extremely low, as in the case where the vehicle speed in the first and second embodiments described above is extremely low.
- step S24 it is determined whether or not the collision time TTC calculated by the TTC calculation unit 22 is equal to or shorter than the alarm activation start threshold time.
- this determination result is “No” (TTC> alarm activation start threshold time)
- the execution of this routine is temporarily ended.
- the determination result in step S24 is “Yes” (TTC ⁇ alarm operation start threshold time)
- the process proceeds to step S25, where an alarm is issued, and execution of this routine is temporarily terminated.
- the third embodiment described above in particular, even if the host vehicle approaches the preceding vehicle that is traveling at the same speed as the host vehicle that is traveling, an error in the vehicle sense of the driver.
- the alarm can be activated at an appropriate timing according to the situation.
- the present invention is not limited to the configuration of each of the above-described embodiments, and the design can be changed without departing from the gist thereof.
- the example in which the alarm activation start threshold time and the alarm activation start threshold distance are calculated using the equation (1) or (2) for the entire vehicle speed range has been described.
- an extremely low speed range in which the vehicle speed is particularly low is set in advance, and only when it is determined that the vehicle speed from the own vehicle sensor 12 has become an extremely low speed range, the alarm activation start threshold time or the alarm activation time The alarm timing may be determined using the start threshold distance.
- a particularly low extremely low speed range is set in advance, and an alarm is issued only when it is determined that the relative speed calculated by the relative relationship calculation unit 21 has become a very low speed range.
- the alarm timing may be determined using the operation start threshold time.
- the reference alarm start time described above may be used as the alarm activation start threshold time and the reference alarm start distance may be used as the alarm activation start threshold distance in a higher speed range than in the extremely low speed range.
- the vehicle is not limited to the preceding vehicle. It may be.
- the object for determining the possibility of collision is a large vehicle such as a truck
- the driver receives a feeling of pressure and an error in the vehicle sense increases. From this, when it is determined that the object is a relatively large obstacle such as a large vehicle based on the detection result of the external sensor 11, it is determined that the object is a large vehicle. May be replaced with a longer distance for large vehicles.
- the present invention is not limited to this, and it may be set such that the rate of increase in the reference alarm start distance increases as the speed decreases using a map or the like, as in the change in the alarm operation start threshold time in the graph shown in FIG. Further, when the traveling speed or the relative speed is close to 0 km / h, the alarm activation start threshold time may become too long. For this reason, a predetermined value may be added to the reference alarm start time at a predetermined traveling speed or a predetermined relative speed or less.
- the travel control device of the present invention it is possible to improve the merchantability by operating an alarm at an appropriate timing according to the driver's vehicle sense error.
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Abstract
Description
本願は、2011年5月18日に、日本に出願された特願2011-111354号に基づき優先権を主張し、その内容をここに援用する。
この車両感覚の誤差は、極低速域では、障害物との距離が近くなるため障害物に対しての圧迫感が強くなり、実際の距離よりも運転者は近づいていると感じてしまうことに起因している。
図1に示すように、この実施形態の走行制御装置1は、外界センサ(物体検出部)11と、自車両センサ(走行速度検出部)12と、警報発生装置13と、電子制御装置20とを備えている。
相対関係算出部21は、例えば、外界センサ11から入力した先行車両の情報(位置、速度、進行方向、大きさ)と、自車両センサ12から入力した自車両情報(位置、速度、進行方向)に基づいて、自車両および先行車両の進路を予測するとともに、自車両と先行車両の相対距離、相対速度を算出し、TTC算出部22に出力する。
まず、ステップS1において、自車両センサから車両速度の情報を取得する。
次に、ステップS2において、メモリ等の記憶装置(図示せず)に予め記憶された基準警報開始時間の情報を読み出して取得する。この基準警報開始時間は、衝突時間TTCの閾値である警報作動開始閾時間(警報作動時間)を算出するための基準値であり、自車両の車種等の種々条件に応じた時間(例えば、1.2秒程度)に設定される。
警報作動開始閾時間=基準警報開始時間+所定距離/走行速度・・・(1)
なお、この実施形態の走行制御装置は、上述した第1実施形態で行っていた衝突時間TTCによる警報タイミングの決定を、衝突距離による警報タイミングの決定に置き換えたものであるため、同一部分に同一符号を付して重複説明を省略する。
電子制御装置30は、外界センサ11から入力される先行車両の各種情報と、自車両センサ12から入力される自車両の各種情報に基づいて、自車両と先行車両とが接触するまでの時間を算出する。これに基づいて警報を行うタイミングを決定し、自車両の乗員に対して警報を行う必要があるか否かを判定し、警報を行う必要があると判定した場合に、警報発生装置13に警報指令を出力する。
まず、ステップS11において、自車両センサから車両速度の情報を取得する。
次に、ステップS12において、上記車両速度と、予め設定される警報の基準時間(例えば、1.2秒程度)と、に基づき、基準時間中に自車両が進む距離である基準警報開始距離を算出する。
警報作動開始閾距離=基準警報開始距離+所定距離・・・(2)
なお、この実施形態の走行制御装置は、上述した第1実施形態における(1)式の「走行速度」を「相対速度」に置き換えたものであるため、図1を援用し、重複説明を省略する。
この実施形態の走行制御装置は、外界センサ11と、自車両センサ12と、警報発生装置13と、電子制御装置20とを備えている。
電子制御装置20は、相対関係算出部(相対速度検出部)21と、TTC算出部(衝突時間算出部)22と、警報タイミング決定部(警報部)24とを備えて構成されている。
相対関係算出部21は、外界センサ11から入力した先行車両の情報(位置、速度、進行方向、大きさ)と、自車両センサ12から入力した自車両情報(位置、速度、進行方向)に基づいて、自車両および先行車両の進路を予測するとともに、自車両と先行車両の相対距離、相対速度を算出し、TTC算出部22に出力する。
警報タイミング決定部24は、TTC算出部22から入力した衝突時間TTCおよび相対速度と、予め設定された基準警報開始時間とに基づいて、警報を行うタイミングを決定し、警報発生装置13に出力する。
まず、ステップS21において、TTC算出部22から自車両と先行車両との相対速度の情報を取得する。なお、相対速度の情報は、相対関係算出部21から取得するようにしても良い。
警報作動開始閾時間=基準警報開始時間+所定距離/相対速度・・・(3)
上述した第1実施形態および第2実施形態では、全車速域について(1)式、又は(2)式を用いて警報作動開始閾時間や警報作動開始閾距離を算出する例について説明した。これに限らず、車両速度が特に低速な極低速域を予め設定しておき、自車両センサ12からの車両速度が極低速域になったと判定された場合にのみ警報作動開始閾時間や警報作動開始閾距離を用いて警報タイミングを決定するようにしても良い。また、第3実施形態の相対速度についても、特に低速な極低速域を予め設定しておき、相対関係算出部21で算出された相対速度が極低速域になったと判定された場合にのみ警報作動開始閾時間を用いて警報タイミングを決定するようにしても良い。これらの場合、極低速域よりも高速域では上述した基準警報開始時間を警報作動開始閾時間として用い、基準警報開始距離を警報作動開始閾距離として用いればよい。
さらに、上述した各実施形態では、衝突可能性を判定する対象物がトラックなどの大型車である場合には、運転者が圧迫感を受けて、車両感覚の誤差が大きくなる。このことから、外界センサ11の検出結果に基づき対象物が大型車などの比較的大型の障害物であるか否かを判定して大型車であると判定された場合には、上述した所定距離を大型車用のより長い距離に置き換えるようにしてもよい。
また、走行速度や相対速度が0km/h近くになると警報作動開始閾時間が大きくなりすぎる場合がある。このため、所定の走行速度又は所定の相対速度以下では、一定の値を基準警報開始時間に加算するようにしても良い。
11 外界センサ(物体検出部)
12 自車両センサ(走行速度検出部)
13 警報発生装置
20,30 電子制御装置
21 相対関係算出部(相対速度検出部)
22 TTC算出部(衝突時間算出部)
24,34 警報タイミング決定部(警報部)
32 衝突距離算出部
Claims (6)
- 自車両の走行速度を検出する走行速度検出部と、
自車両周囲の物体を検出して物体検出結果を取得する物体検出部と、
前記走行速度、および、前記物体検出結果に基づいて前記物体と前記自車両とが衝突するまでの時間を算出する衝突時間算出部と、
前記衝突するまでの時間に基づいて運転者に警報を行う警報部と、を備えた走行制御装置であって、
前記警報部は:
前記警報を開始する時間の基準値として予め設定された基準警報開始時間と、前記運転者の車両感覚の誤差の最小値として予め設定された所定距離と、を取得し;
前記基準警報開始時間に対して、前記所定距離を前記走行速度で除算した時間を加算して警報作動開始閾時間を求め;
前記警報作動開始閾時間と前記衝突するまでの時間とに基づいて前記運転者への前記警報を行うことを特徴とする走行制御装置。 - 前記警報部は、
極低車速時のみ、前記警報作動開始閾時間に基づいて前記運転者に前記警報を行うことを特徴とする請求項1に記載の走行制御装置。 - 自車両の走行速度を検出する走行速度検出部と、
自車両周囲の物体を検出して物体検出結果を取得する物体検出部と、
前記走行速度、および、前記物体検出結果に基づいて前記物体と前記自車両とが衝突するまでの距離を算出する衝突距離算出部と、
前記衝突するまでの距離に基づいて運転者に警報を行う警報部と、を備えた走行制御装置であって、
前記警報部は、
前記警報を開始する距離の基準値として予め設定された基準警報開始距離と、前記運転者の車両感覚の誤差の最小値として予め設定された所定距離と、を取得し;
前記基準警報開始距離に対して、前記所定距離を加算して警報作動開始閾距離を求め;
前記警報作動開始閾距離と前記衝突するまでの距離とに基づいて前記運転者への前記警報を行うことを特徴とする走行制御装置。 - 前記警報部は、
極低車速時のみ、前記警報作動開始閾距離に基づいて前記運転者に前記警報を行うことを特徴とする請求項3に記載の走行制御装置。 - 自車両の走行速度を検出する走行速度検出部と、
自車両周囲の物体を検出して物体検出結果を取得する物体検出部と、
自車両と物体との相対速度を検出する相対速度検出部と、
前記走行速度、および、前記物体検出結果に基づいて前記物体と前記自車両とが衝突するまでの距離を算出する衝突距離算出部と、
前記衝突するまでの距離に基づいて運転者に警報を行う警報部と、を備えた走行制御装置であって、
前記警報部は、
前記警報を開始する時間の基準値として予め設定された基準警報開始時間と、前記運転者の車両感覚の誤差の最小値として予め設定された所定距離と、を取得し;
前記基準警報開始時間に対して、前記自車両と前記物体との相対速度で除算した時間を加算して警報作動開始閾時間を求め;
前記警報作動開始閾時間と前記衝突するまでの時間とに基づいて前記運転者への前記警報を行うことを特徴とする走行制御装置。 - 前記警報部は、
前記相対速度が極低速時のみ、前記警報作動開始閾時間に基づいて前記運転者に前記警報を行うことを特徴とする請求項5に記載の走行制御装置。
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EP2711911A4 (en) | 2015-01-21 |
EP2711911B1 (en) | 2017-07-12 |
CN103534742B (zh) | 2016-06-01 |
US9406230B2 (en) | 2016-08-02 |
JP5577460B2 (ja) | 2014-08-20 |
EP2711911A1 (en) | 2014-03-26 |
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US20140104050A1 (en) | 2014-04-17 |
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