WO2012081208A1 - 車両の走行支援装置 - Google Patents
車両の走行支援装置 Download PDFInfo
- Publication number
- WO2012081208A1 WO2012081208A1 PCT/JP2011/006878 JP2011006878W WO2012081208A1 WO 2012081208 A1 WO2012081208 A1 WO 2012081208A1 JP 2011006878 W JP2011006878 W JP 2011006878W WO 2012081208 A1 WO2012081208 A1 WO 2012081208A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- travel
- state
- travel control
- control means
- Prior art date
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 28
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 28
- 238000001228 spectrum Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 18
- 230000006870 function Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 15
- 238000004364 calculation method Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 238000007476 Maximum Likelihood Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000000611 regression analysis Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/167—Driving aids for lane monitoring, lane changing, e.g. blind spot detection
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W2050/0062—Adapting control system settings
- B60W2050/0075—Automatic parameter input, automatic initialising or calibrating means
-
- 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
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/801—Lateral distance
-
- 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
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/082—Selecting or switching between different modes of propelling
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
Definitions
- the present invention relates to a vehicle travel support device, and more specifically, determines the state of traffic flow from the acceleration of the host vehicle and the inter-vehicle distance from another vehicle, and performs vehicle travel control according to the determination result.
- the present invention relates to a vehicle travel support device having a switching function.
- Patent Document 1 acquires a traffic state including a vehicle density of a road on which the vehicle travels, and performs vehicle travel control so that the inter-vehicle distance is less likely to decrease as the vehicle density of the road approaches a critical density. Describes that the traffic flow is suppressed or avoided from becoming a traffic jam flow.
- an object of the present invention is to provide a vehicle travel support device capable of appropriately improving the traffic flow determination (estimation) accuracy and capable of travel control effective for avoiding or eliminating traffic congestion. .
- the present invention relates to determination means for determining a traffic flow state in a lane on which the host vehicle travels based on the acceleration of the host vehicle and an inter-vehicle distance from other vehicles in the vicinity, and travel for controlling the travel of the host vehicle.
- a travel control means that can switch the travel control according to a determination result by the determination means, and the travel control means is capable of causing a traffic jam in the determination result and a traffic flow state.
- Vehicle driving support that switches driving control when it indicates that the vehicle is in a critical region that exists during the transition from a free flow state to a mixed flow state where the braking state and acceleration state of the vehicle are mixed Device.
- the traffic flow is in a critical region that exists during the transition from the free flow to the mixed flow.
- the information processing device further includes notification control means for controlling the notification means mounted on the host vehicle, and the notification control means switches notification contents by the notification means in accordance with switching of travel control by the travel control means. .
- the driver when the traffic flow is in the critical region, the driver is notified of the switching of the traveling control, so that if the driver progresses to the mixed flow, the traffic flow becomes congested. It is possible to make it known that traveling control is necessary to prevent the progress of the vehicle.
- the traveling control means includes an automatic constant speed traveling function, and switching of the traveling control includes turning on or off the automatic constant speed traveling function.
- the travel control when the traffic flow is in a critical region, the travel control is more suitable for preventing the advance to a traffic jam by turning on or off the automatic constant speed travel function. Can be performed.
- the determination means includes a logarithm of a maximum slope value calculated from a single regression line of a power spectrum obtained from the acceleration of the host vehicle, and a logarithm of a minimum covariance value calculated from a distribution of inter-vehicle distances.
- the traffic flow state is determined from the correlation map.
- FIG. 4 shows an acceleration spectrum according to one embodiment of the present invention.
- FIG. 6 is a diagram illustrating a probability density distribution according to an embodiment of the present invention.
- FIG. 6 is a diagram schematically showing a covariance value ⁇ k according to an embodiment of the present invention. It is an image (concept) figure of the correlation map of inclination maximum value and covariance minimum value according to one Example of this invention. It is a figure which shows the relationship between traffic density and traffic volume.
- FIG. 6 is a correlation map between the logarithm of the minimum covariance value for the inter-vehicle distance distribution and the logarithm of the slope maximum value for the acceleration spectrum according to one embodiment of the present invention. It is a figure which shows the structure of the traveling control means (function) according to one Example of this invention. It is a figure which shows the example of a display by a display according to one Example of this invention. 4 is a flowchart of vehicle travel control according to an embodiment of the present invention.
- FIG. 1 is a block diagram showing a configuration of a vehicle travel support apparatus 100 according to an embodiment of the present invention.
- the driving support device 100 is mounted on a vehicle.
- the driving support device 100 can be mounted on a vehicle as one device or as a part of another device.
- the driving support device 100 includes a yaw rate sensor 10, a vehicle speed sensor 11, a radar device 12, a navigation device 13, a processing device 14, a switch 15, various actuators 16, a speaker 17, a display 18, and a communication device 19.
- the processing device 14 may be incorporated in the navigation device 13.
- the speaker 17 and the display 18 may use corresponding functions provided in the navigation device 13.
- the yaw rate sensor 10 detects the yaw rate of the host vehicle and sends a detection signal to the processing device 14.
- the vehicle speed sensor 11 detects the acceleration of the host vehicle and sends a detection signal to the processing device 14.
- the radar device 12 divides a predetermined detection target region set around the host vehicle into a plurality of angle regions, and transmits an electromagnetic wave such as an infrared laser or millimeter wave while scanning each angle region. .
- the radar device 12 receives a reflection signal (electromagnetic wave) from an object in the detection target region and sends the reflection signal to the processing device 14.
- the navigation device 13 receives a positioning signal such as a GPS signal, and calculates the current position of the host vehicle from the positioning signal.
- the navigation device 13 can also calculate the current position of the host vehicle from the acceleration and yaw rate detected by the vehicle speed sensor 11 and the yaw rate sensor (not shown) using autonomous navigation.
- the navigation device 13 includes map data and has a function of outputting the current position of the host vehicle, route information to a destination, traffic jam information, and the like on a map to be displayed.
- the processing device 14 includes a frequency analysis unit 31, a single regression line calculation unit 32, a slope maximum value calculation unit 33, a reflection point detection unit 34, another vehicle detection unit 35, an inter-vehicle distance detection unit 36, an inter-vehicle distance distribution estimation unit 37, A minimum variance calculation unit 38, a correlation map creation unit 40, a traffic flow determination unit 41, a travel control unit 42, a notification control unit 43, and a communication control unit 44 are provided.
- the function of each block is realized by a computer (CPU) included in the processing device 14. Details of the function of each block will be described later.
- the processing device 14 has, for example, an A / D conversion circuit that converts an input analog signal into a digital signal, a central processing unit (CPU) that performs various arithmetic processing, and a CPU that stores data when performing arithmetic operations. It includes a RAM to be used, a ROM for storing programs to be executed by the CPU and data to be used (including tables and maps), an output circuit for outputting a drive signal for the speaker 17, a display signal for the display 18, and the like.
- CPU central processing unit
- the switch 15 outputs various signals related to the traveling control of the host vehicle to the processing device 14.
- the various signals may include, for example, accelerator pedal and brake pedal operation (position) signals, various signals related to automatic constant speed running control (ACC) (control start, control stop, target vehicle speed, inter-vehicle distance, etc.) and the like. .
- ACC automatic constant speed running control
- the various actuators 16 are used as a general term for a plurality of actuators, and include, for example, an acceleration actuator (such as a throttle actuator), a deceleration actuator (such as a brake actuator), and a steering actuator.
- an acceleration actuator such as a throttle actuator
- a deceleration actuator such as a brake actuator
- a steering actuator such as a steering actuator
- the display 18 includes a display such as an LCD, and can be a display having a touch panel function.
- the display device 16 may be configured to include an audio output unit and an audio input unit.
- the indicator 18 notifies the driver by displaying predetermined alarm information or blinking or lighting a predetermined warning light in response to a control signal from the notification control unit 43.
- the speaker 17 notifies the driver by outputting a predetermined alarm sound or sound according to a control signal from the notification control unit 43.
- the communication device 19 communicates with another vehicle or a server device (not shown) or a relay station (not shown) by wireless communication under the control of the communication control unit 44, and the traffic jam prediction result output from the traffic jam prediction unit 41 Position information is transmitted in association with each other, or correspondence information between a traffic jam prediction result and position information is received from another vehicle or the like. The acquired information is sent to the notification control unit 43 or the travel control unit 42 via the communication control unit 44.
- the frequency analysis unit 31 performs frequency analysis on the acceleration of the host vehicle detected by the vehicle speed sensor 11 and calculates a power spectrum.
- FIG. 2 shows examples of power spectra in two different traveling states (a) and (b). In FIG. 2, acceleration spectra 51 and 53 corresponding to frequencies are illustrated as power spectra.
- the single regression line calculation unit 32 performs a single regression analysis on the obtained power spectrum and calculates a single regression line.
- the straight lines indicated by reference numerals 52 and 54 are simple regression lines obtained for the acceleration spectra 51 and 53, respectively.
- the slope maximum value calculation unit 33 calculates the slope maximum value from the obtained single regression line.
- the inclinations ⁇ 1 and ⁇ 2 at (a) and (b) are obtained.
- , etc.) obtained from the difference ⁇ is obtained.
- the obtained maximum value is stored in a memory (RAM or the like) in the processing device 14 as a tilt maximum value.
- the reflection point detector 34 detects the position of the reflection point (object) from the reflection signal detected by the radar device 12.
- the other vehicle detection unit 35 is based on the position information of the reflection point output from the reflection point detection unit 34, and is at least one or more units present in the vicinity of the host vehicle from the distance between adjacent reflection points, the distribution state of the reflection points, and the like. Detect other vehicles.
- the inter-vehicle distance detection unit 36 detects the inter-vehicle distance between the host vehicle and the other vehicle from the other vehicle information detected by the reflection point detection unit 34, and outputs the result together with the detected number of other vehicles.
- the inter-vehicle distance distribution estimation unit 37 estimates the inter-vehicle distance distribution from the information on the inter-vehicle distance and the number of vehicles output from the inter-vehicle distance detection unit 36.
- the inter-vehicle distance distribution estimation will be described with reference to FIGS. 3 and 4.
- FIG. 3 shows a probability density distribution.
- a Gaussian distribution Apply probability density distribution. For example, when there are two vehicle groups, the vehicle group can be regarded as a distribution obtained by linearly combining two Gaussian distributions.
- a probability function P (X) representing the entire distribution can be obtained as the sum (superposition) of the probability functions P1 (X) and P2 (X) representing the two Gaussian distributions. .
- ⁇ k is an expected value (average value) and represents a position having the highest density.
- ⁇ k is a covariance value (matrix), and represents distortion of the distribution, that is, how the density decreases in which direction away from the expected value.
- ⁇ k is a mixing coefficient (mixing ratio) of the Gaussian distribution, and represents a ratio (0 ⁇ ⁇ k ⁇ 1) of how much each Gaussian distribution contributes.
- the mixing coefficient ⁇ k can be regarded as one probability.
- the covariance minimum value calculation unit 38 calculates the corresponding covariance value ⁇ k for the obtained Gaussian distribution P (X) using, for example, the maximum likelihood method. At this time, for example, in order to obtain a parameter (covariance) that maximizes the likelihood function obtained from the above-described P (X), calculation is performed using an EM algorithm or the like.
- a covariance value ⁇ k is calculated for each Gaussian distribution.
- the covariance minimum value calculation unit 38 calculates the minimum value of the covariance values ⁇ k obtained for each Gaussian distribution P (X).
- Figure 4 is a diagram schematically representing the covariance value sigma k.
- the graph 56 representing the covariance value ⁇ k is a sharp graph at delta ( ⁇ ) 0, and there is no variation in the vehicle group, that is, the vehicle is in a traveling state in which the inter-vehicle distance is substantially constant. It suggests.
- FIG. 4B two graphs are obtained, a graph 57 having a peak at ⁇ 1 in a region where delta ( ⁇ ) is negative and a graph 58 having a peak at ⁇ 2 in a positive region.
- Both the graphs 57 and 58 have a predetermined fluctuation range ( ⁇ ), which indicates that there are fluctuations in the vehicle group, in other words, that there are a plurality of sets of cars having different inter-vehicle distances.
- ⁇ the minimum value of the covariance value sigma k is approximately zero (0) (a), the a ⁇ 1 the smaller the (b).
- FIG. 6 is an image (concept) diagram of a correlation map between the maximum slope value and the minimum covariance value.
- the horizontal (X) axis is the covariance minimum value X
- the vertical (Y) axis is the slope maximum value Y
- the correlation of the variables (X, Y) is mapped.
- Two areas indicated by reference numerals 59 and 60 are shown, and there is a boundary area 61 where these two areas overlap.
- the region 59 corresponds to a state where the covariance minimum value is relatively small and the variation of the vehicle group is small, in other words, a state where the inter-vehicle distance is relatively constant.
- the region 60 corresponds to a state where the covariance minimum value is relatively large and the variation of the vehicle group is large, in other words, a state where there are a plurality of sets of vehicles having different inter-vehicle distances.
- the boundary region 61 is a region where the variation of the vehicle group changes from a small state to a large state, and the present invention is characterized in that the state of the vehicle group corresponding to the boundary region 61 is quantitatively found and a traffic jam is predicted. There is.
- FIG. 6 is a diagram showing the relationship between traffic density and traffic volume.
- the horizontal (X) axis of the graph is a traffic density that means the number of vehicles existing within a predetermined distance from the host vehicle. The reciprocal of this traffic density corresponds to the inter-vehicle distance.
- the vertical (Y) axis is a traffic volume that means the number of vehicles passing through a predetermined position. It can be understood that FIG. 6 represents a traffic flow that means the flow of a vehicle.
- the traffic flow illustrated in FIG. 6 can be roughly divided into four states (areas).
- the first is a free flow state in which the possibility of traffic congestion is low, and here, a vehicle speed and an inter-vehicle distance above a certain level can be secured.
- the second is a mixed flow state in which the braking state and the acceleration state of the vehicle are mixed.
- This mixed flow state is the state before the transition to the congestion flow, and the degree of freedom of driving by the driver is reduced, and the traffic flow is reduced and the traffic density is increased (reduction of the inter-vehicle distance). It is in a state where the probability of transition is high.
- the third is a traffic flow state indicating a traffic jam.
- the fourth is a critical region state which is a transition state existing during the transition from the free flow state to the mixed flow state.
- This state is a state in which the traffic volume and the traffic density are higher than those in the free stream, and the state is shifted to a mixed stream due to a decrease in the traffic volume and an increase in the traffic density (a reduction in the inter-vehicle distance).
- the critical region is sometimes called metastable flow or metastable flow.
- the region 59 in FIG. 5 includes the free flow and critical region states in FIG. 6, and the region 60 in FIG. 5 includes the mixed flow and jammed flow states in FIG. It will be. Therefore, the boundary region in FIG. 5 is a boundary state including both the critical region state and the mixed flow state in FIG. 6, and is referred to as a critical region boundary as shown in FIG. In the present invention, it is an object to quantitatively grasp the state of the critical region including the boundary of the critical region and to control the lane change or the like to prevent the occurrence of the traffic jam or to avoid the traffic jam.
- FIG. 7 is a diagram showing a correlation map between the logarithm of the minimum covariance value for the inter-vehicle distance distribution and the logarithm of the maximum slope value for the acceleration spectrum.
- FIG. 7A is a simplified drawing of the traffic flow map of FIG. 6, and
- FIG. 7B shows a correlation map between the logarithm of the minimum covariance value and the logarithm of the slope maximum value.
- the logarithm of the covariance minimum value and the logarithm of the slope maximum value in (b) is the difference between the slope maximum value calculated by the slope maximum value calculation unit 33 and the covariance minimum value calculated by the covariance minimum value calculation unit 38. Calculated as a logarithmic value.
- the region indicated by reference numeral 62 includes the critical region (a), and the region indicated by reference numeral 63 includes the state of the mixed flow (a).
- a line indicated by reference numeral 64 is a critical line, and means a critical point where traffic congestion occurs when the line is moved to a mixed flow state.
- the boundary region 65 between the regions 62 and 63 corresponds to the boundary of the critical region immediately before the criticality 64.
- the correlation map illustrated in FIG. 7B is stored in a memory (RAM or the like) in the processing device 14.
- the traffic flow determination unit 41 in FIG. 1 determines the type of traffic flow in the correlation map created by the correlation map creation unit 40, more specifically, whether or not a critical region state exists as a traffic flow. judge. Then, a control signal including the determination result is sent to the travel control unit 42, the notification control unit 43, and the communication control unit 44 in order to prevent the shift to the traffic jam. As a result, it is possible to execute various controls, which will be described later, to prevent the transition to the mixed flow illustrated in FIG. 7, and as a result, it is possible to predict traffic jams that are useful not only for traffic jam avoidance but also for eliminating traffic jams. .
- the traffic flow determination unit 41 outputs the traffic jam prediction result to the navigation device 13.
- the navigation device 13 avoids traffic jam based on the traffic flow judgment result received from the traffic flow judgment unit 41 and the traffic flow judgment result or the traffic jam prediction result predicted by the other vehicle output from the communication control unit 41. Thus, route search and route guidance of the host vehicle can be performed.
- the travel control unit 42 includes a traffic flow determination result output from the traffic flow determination unit 41, traffic jam related information from other vehicles output from the communication control unit 44, various signals output from the switch 15, and a vehicle speed sensor. 11 is controlled by controlling various actuators based on the detection result of the acceleration of the host vehicle output from No. 11 and the detection result of the inter-vehicle distance output from the inter-vehicle distance detection unit 36.
- FIG. 8 is a block diagram showing a configuration of the traveling control unit 42 according to one embodiment of the present invention.
- the traveling control unit 42 maintains a preset target inter-vehicle distance when a preceding vehicle is detected in front of the vehicle and travels following the preceding vehicle, and is set in advance when no preceding vehicle is detected.
- An automatic constant speed running (ACC: Adaptive Cruise Control) system that runs at a constant speed at the target vehicle speed is realized.
- ACC Adaptive Cruise Control
- the traveling control unit 42 is configured to turn on or off the ACC control according to the traffic flow determination result output from the traffic flow determination unit 41. For example, when the traffic flow determination result is “with critical region”, the ACC control is turned off so that the driver performs a driving operation in which the inter-vehicle distance is long and the number of times of braking is small. When the traffic flow determination result is “no critical region” or “mixed flow is present”, the ACC control is turned on so that the vehicle can run at a constant distance or a constant speed by automatic constant speed running. To.
- the traveling locus estimation unit 421 estimates the future traveling locus of the host vehicle based on the yaw rate detected by the yaw rate sensor 10 and the acceleration detected by the vehicle speed sensor 11. Specifically, the travel trajectory estimation unit 421 calculates the turning radius of the vehicle from the detected yaw rate and acceleration, and connects the arc of the calculated turning radius to the current traveling direction of the own vehicle. It is possible to estimate the future travel locus of the vehicle.
- Arbitrary methods can be used for estimating the travel locus, and information from other sensors or the like may be used additionally or alternatively. For example, you may use the steering angle of the steering wheel detected from the sensor using the steering angle sensor.
- the detection area setting unit 422 sets a detection area having a predetermined width along the center line with the estimated traveling locus as the center line.
- the preceding vehicle extraction unit 423 extracts a vehicle existing in the detection area among the objects detected by the radar device 12 as a preceding vehicle to be followed (target).
- determination of a target may be referred to as “lock on”, and release of the determined target may be referred to as “lock off”.
- the control target value determination unit 424 determines a control target value including a target vehicle speed and a target inter-vehicle distance for causing the host vehicle to follow the extracted target. . Any appropriate method can be used for determining these target values. For example, the current vehicle speed of the host vehicle and the target arrival time to the preceding vehicle (for example, can be selected by a passenger via a switch or the like provided according to a desired size of the inter-vehicle distance) The target vehicle speed of each control cycle can be determined so as to reach the target inter-vehicle distance calculated by multiplication.
- the control target value determination unit 424 determines the control target value including the target vehicle speed for realizing constant speed traveling.
- the control target value can also be determined by any appropriate method. For example, the vehicle speed set by the occupant via a predetermined switch or the like can be set as the target vehicle speed.
- the vehicle control unit 425 drives the acceleration actuator 161 and the deceleration actuator 162 of the vehicle based on the determined control target value.
- the acceleration actuator 161 include an actuator that controls the opening degree of the throttle valve and an actuator that controls the lift amount of the intake valve.
- the deceleration actuator 162 there is a brake device that controls the operation of the brake.
- the vehicle control unit 425 controls the vehicle so as to realize the determined target vehicle speed and target inter-vehicle distance via driving of these actuators.
- the vehicle control unit 425 receives the control signal including the traffic flow determination result from the traffic flow determination unit 41 and switches the ACC control on or off as described above. Specifically, for example, when the traffic flow determination result is “no critical region” or “mixed flow is present”, the ACC control is turned on and the vehicle follows the target extracted by the preceding vehicle extraction unit 423. Let it run. When the traffic flow determination result is “with critical region”, the ACC control is turned off or “lock on” by the preceding vehicle extraction unit 23 is released (locked off).
- the notification control unit 43 is based on the traffic flow determination result output from the traffic flow determination unit 41 and the traffic jam generation prediction result or the traffic flow determination result predicted in another vehicle output from the communication control unit 44. In addition, notification control by the speaker 17 is performed. For example, the notification control unit 43 transmits a control signal for causing the display 18 to display “Decelerate and take the distance between the vehicles” or the like and to transmit the sound from the speaker 17 by voice.
- the notification control unit 43 controls the display 18 and the speaker 17 to notify the driver of the switching.
- FIG. 9 is a diagram showing a display example of turning on or off the ACC control by the display according to one embodiment of the present invention.
- Fig.9 (a) is a figure which shows the position of the display part 73 in a vehicle interior.
- FIG. 9A illustrates a case where the display unit 73 is installed below the room mirror 72 located on the center line C of the passenger compartment and a case where the display unit 73 is installed on the front cover unit 70.
- the display unit 73 may be incorporated as a part of the display unit 71 of the navigation device 13 or may be disposed on the upper part thereof.
- the display unit 73 is preferably located near the center of the passenger compartment. This is because the display unit 73 is positioned near the center of the passenger compartment, so that the display unit 73 can be placed in the driver's field of view regardless of whether the driver's line-of-sight direction is right or left. .
- FIG. 9B is an enlarged view of the display unit 73.
- the display unit 73 includes two lighting units 731 and 732. Depending on whether the ACC control is on or off, the lighting forms of the lighting units 731 and 732 change. For example, the lighting unit 731 lights or blinks red when the ACC control is on, and the lighting unit 732 lights or blinks green when the ACC control is off. This lighting mode (color, lighting (flashing) time, etc.) can be arbitrarily set.
- the speaker 17 may notify the ACC control on or off by voice. Accordingly, it is possible to prompt the driver to quickly turn on or off the ACC control according to the traffic flow determination result, and to prompt the driver to shift to driving for avoiding or eliminating traffic congestion.
- FIG. 10 is a flowchart of traffic jam prediction according to one embodiment of the present invention. The details of each step are as described above.
- the vehicle speed sensor 11 detects the acceleration of the host vehicle.
- an inter-vehicle distance from vehicles around the own vehicle is detected based on an output signal from the radar device 12 (blocks 34 to 36 in FIG. 1).
- step S12 acceleration spectrum single regression maximization is performed. Specifically, the above-described inclination maximum value is calculated (blocks 31 to 33 in FIG. 1).
- the covariance value is specified. Specifically, the above-described minimum covariance is calculated (blocks 37 and 38 in FIG. 1).
- step S14 the critical region is modeled. Specifically, a correlation map as illustrated in FIG. 8B is created (block 40 in FIG. 1).
- step S15 it is determined whether or not a critical region exists. The critical region is the state of the critical region illustrated in FIGS. 7 and 8A described above. If this determination is Yes, the ACC control is switched off in the next step S16. The ACC control is stopped.
- step S15 determines whether a mixed flow exists. If this determination is Yes, the ACC control is turned on in the next step S18. The ACC control already described is performed. If this determination is No, the process returns to steps S12 and S13 and the subsequent flow is repeated.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Traffic Control Systems (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
51、53 加速度(パワー)スペクトル
52、54 単回帰直線
100 走行支援装置
Claims (4)
- 自車両の加速度と、周辺の他車両との車間距離とに基づいて、自車両が走行する車線での交通流の状態を判定する判定手段と、
自車両の走行を制御する走行制御手段であって、前記判定手段による判定結果に応じて、走行制御を切り替えることができる、走行制御手段とを備え、
前記走行制御手段は、前記判定結果において、交通流の状態が、渋滞が発生する可能性が低い自由流の状態から車両の制動状態と加速状態が混合する混合流の状態へ移行する間に存在する臨界領域の状態であることを示す場合に、走行制御を切り替える、車両の走行支援装置。 - さらに、自車両に搭載された報知手段を制御する報知制御手段を備え、当該報知制御手段は、前記走行制御手段による前記走行制御の切り替えに応じて前記報知手段による報知内容を切り替える、請求項1に記載の車両の走行支援装置。
- 前記走行制御手段は、自動定速走行機能を備え、前記走行制御の切り替えは当該自動定速走行機能をオンまたはオフすることを含む、請求項1または2に記載の車両の走行支援装置。
- 前記判定手段は、前記自車両の加速度から得られるパワースペクトルの単回帰直線から算出した傾き極大値の対数と、前記車間距離の分布から算出した共分散の最小値の対数との相関マップから前記交通流の状態を判定する、請求項1~3のいずれかに記載の車両の走行支援装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013014736A BR112013014736A2 (pt) | 2010-12-15 | 2011-12-09 | aparelho de auxílio de condução para um veículo |
CN201180058985.8A CN103249627B (zh) | 2010-12-15 | 2011-12-09 | 车辆的行驶辅助装置 |
JP2012548636A JP5511984B2 (ja) | 2010-12-15 | 2011-12-09 | 車両の走行支援装置 |
US13/993,607 US9031761B2 (en) | 2010-12-15 | 2011-12-09 | Driving assist apparatus for a vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-278752 | 2010-12-15 | ||
JP2010278752 | 2010-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012081208A1 true WO2012081208A1 (ja) | 2012-06-21 |
Family
ID=46244327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/006878 WO2012081208A1 (ja) | 2010-12-15 | 2011-12-09 | 車両の走行支援装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9031761B2 (ja) |
JP (1) | JP5511984B2 (ja) |
CN (1) | CN103249627B (ja) |
BR (1) | BR112013014736A2 (ja) |
WO (1) | WO2012081208A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012128612A (ja) * | 2010-12-15 | 2012-07-05 | Honda Motor Co Ltd | 運転支援方法 |
CN108327723A (zh) * | 2017-01-18 | 2018-07-27 | 福特全球技术公司 | 通过无监督学习的对象跟踪 |
US10540891B2 (en) | 2015-08-27 | 2020-01-21 | Nec Corporation | Traffic-congestion prevention system, traffic-congestion prevention method, and recording medium |
WO2021149846A1 (ko) * | 2020-01-22 | 2021-07-29 | 엘지전자 주식회사 | 경로 제공 장치 및 그것의 경로 제공 방법 |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5667944B2 (ja) * | 2011-08-11 | 2015-02-12 | 本田技研工業株式会社 | サーバ側渋滞解消走行支援方法 |
US9862382B2 (en) * | 2014-08-11 | 2018-01-09 | Nissan Motor Co., Ltd. | Travel control device and method for vehicle |
CN104494597A (zh) * | 2014-12-10 | 2015-04-08 | 浙江吉利汽车研究院有限公司 | 自适应巡航控制系统 |
JP6202537B2 (ja) * | 2015-04-14 | 2017-09-27 | 本田技研工業株式会社 | 走行支援方法、プログラム、および走行支援装置 |
US10093304B2 (en) * | 2015-09-11 | 2018-10-09 | Ford Global Technologies, Llc | Enhanced electric drive mode having predicted destinations to reduce engine starts |
JP6365481B2 (ja) * | 2015-09-23 | 2018-08-01 | トヨタ自動車株式会社 | 車両走行制御装置 |
US10532736B2 (en) * | 2015-11-06 | 2020-01-14 | Honda Motor Co., Ltd. | Vehicle travel control device |
US10037696B2 (en) * | 2016-03-31 | 2018-07-31 | Delphi Technologies, Inc. | Cooperative automated vehicle system |
US9701307B1 (en) | 2016-04-11 | 2017-07-11 | David E. Newman | Systems and methods for hazard mitigation |
US10062288B2 (en) * | 2016-07-29 | 2018-08-28 | GM Global Technology Operations LLC | Systems and methods for autonomous driving merging management |
US10163339B2 (en) * | 2016-12-13 | 2018-12-25 | Sap Se | Monitoring traffic congestion |
US10908607B2 (en) * | 2017-11-30 | 2021-02-02 | Ford Global Technologies, Llc | Enhanced traffic jam assist |
CN108510776A (zh) * | 2018-05-24 | 2018-09-07 | 深圳市华慧品牌管理有限公司 | 基于行车记录仪的道路堵塞预测方法及装置 |
US10745007B2 (en) * | 2018-06-08 | 2020-08-18 | Denso International America, Inc. | Collision avoidance systems and methods |
US10820349B2 (en) | 2018-12-20 | 2020-10-27 | Autonomous Roadway Intelligence, Llc | Wireless message collision avoidance with high throughput |
US10816635B1 (en) | 2018-12-20 | 2020-10-27 | Autonomous Roadway Intelligence, Llc | Autonomous vehicle localization system |
JP6859374B2 (ja) * | 2019-01-11 | 2021-04-14 | 本田技研工業株式会社 | 予測装置、予測方法、およびプログラム |
JP7268464B2 (ja) * | 2019-04-23 | 2023-05-08 | 株式会社デンソー | 車両制御装置 |
US10820182B1 (en) | 2019-06-13 | 2020-10-27 | David E. Newman | Wireless protocols for emergency message transmission |
US10939471B2 (en) | 2019-06-13 | 2021-03-02 | David E. Newman | Managed transmission of wireless DAT messages |
US10713950B1 (en) | 2019-06-13 | 2020-07-14 | Autonomous Roadway Intelligence, Llc | Rapid wireless communication for vehicle collision mitigation |
KR20190103093A (ko) * | 2019-08-16 | 2019-09-04 | 엘지전자 주식회사 | 자율주행 차량의 차선 변경 장치 및 방법 |
EP3790295B1 (en) * | 2019-09-09 | 2024-05-29 | Volkswagen AG | Method, computer program, and apparatus for determining a minimum inter-vehicular distance for a platoon, vehicle, traffic control entity |
US11206092B1 (en) | 2020-11-13 | 2021-12-21 | Ultralogic 5G, Llc | Artificial intelligence for predicting 5G network performance |
US11202198B1 (en) | 2020-12-04 | 2021-12-14 | Ultralogic 5G, Llc | Managed database of recipient addresses for fast 5G message delivery |
CN113401123B (zh) * | 2021-05-24 | 2022-04-01 | 吉林大学 | 融合驾驶模式信息的汽车预测巡航参数自整定控制系统 |
CN113920727B (zh) * | 2021-10-08 | 2023-11-07 | 温州大学 | 一种由施工引发道路拥堵的预测方法及系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004233191A (ja) * | 2003-01-30 | 2004-08-19 | Mazda Motor Corp | 車両用ナビゲーション・システム、車両用ナビゲーションのためのコンピュータ・プログラム、及び車両用ナビゲーション装置 |
JP2007219743A (ja) * | 2006-02-15 | 2007-08-30 | Denso Corp | 自動車用走行制御システム |
JP2009262862A (ja) * | 2008-04-28 | 2009-11-12 | Toyota Motor Corp | 走行制御装置及び走行制御方法 |
JP2010036862A (ja) * | 2008-08-08 | 2010-02-18 | Toyota Motor Corp | 走行制御装置及び走行制御システム |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10218017A1 (de) * | 2002-04-23 | 2003-11-06 | Bosch Gmbh Robert | Verfahren zur Geschwindigkeits- und Abstandsregelung bei Kraftfahrzeugen |
-
2011
- 2011-12-09 BR BR112013014736A patent/BR112013014736A2/pt not_active Application Discontinuation
- 2011-12-09 JP JP2012548636A patent/JP5511984B2/ja not_active Expired - Fee Related
- 2011-12-09 US US13/993,607 patent/US9031761B2/en active Active
- 2011-12-09 CN CN201180058985.8A patent/CN103249627B/zh active Active
- 2011-12-09 WO PCT/JP2011/006878 patent/WO2012081208A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004233191A (ja) * | 2003-01-30 | 2004-08-19 | Mazda Motor Corp | 車両用ナビゲーション・システム、車両用ナビゲーションのためのコンピュータ・プログラム、及び車両用ナビゲーション装置 |
JP2007219743A (ja) * | 2006-02-15 | 2007-08-30 | Denso Corp | 自動車用走行制御システム |
JP2009262862A (ja) * | 2008-04-28 | 2009-11-12 | Toyota Motor Corp | 走行制御装置及び走行制御方法 |
JP2010036862A (ja) * | 2008-08-08 | 2010-02-18 | Toyota Motor Corp | 走行制御装置及び走行制御システム |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012128612A (ja) * | 2010-12-15 | 2012-07-05 | Honda Motor Co Ltd | 運転支援方法 |
US10540891B2 (en) | 2015-08-27 | 2020-01-21 | Nec Corporation | Traffic-congestion prevention system, traffic-congestion prevention method, and recording medium |
CN108327723A (zh) * | 2017-01-18 | 2018-07-27 | 福特全球技术公司 | 通过无监督学习的对象跟踪 |
WO2021149846A1 (ko) * | 2020-01-22 | 2021-07-29 | 엘지전자 주식회사 | 경로 제공 장치 및 그것의 경로 제공 방법 |
Also Published As
Publication number | Publication date |
---|---|
BR112013014736A2 (pt) | 2016-10-04 |
US20130268174A1 (en) | 2013-10-10 |
JP5511984B2 (ja) | 2014-06-04 |
CN103249627B (zh) | 2016-02-24 |
US9031761B2 (en) | 2015-05-12 |
JPWO2012081208A1 (ja) | 2014-05-22 |
CN103249627A (zh) | 2013-08-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5511984B2 (ja) | 車両の走行支援装置 | |
JP5555778B2 (ja) | 渋滞予測方法 | |
US10737667B2 (en) | System and method for vehicle control in tailgating situations | |
US10625742B2 (en) | System and method for vehicle control in tailgating situations | |
US11731632B2 (en) | Vehicle travel control method and travel control device | |
JP6614777B2 (ja) | 予測的レーン変更支援のための方法及びシステム、プログラムソフトウェア製品、並びに乗り物 | |
JP6318864B2 (ja) | 運転支援装置 | |
JP5501209B2 (ja) | 車両の走行支援装置 | |
CN112638749A (zh) | 车辆的行驶控制方法及行驶控制装置 | |
WO2012002098A1 (ja) | 渋滞予測表示方法 | |
JP5570961B2 (ja) | 渋滞予兆表示方法 | |
JP6711329B2 (ja) | 走行支援装置 | |
JPWO2012002097A1 (ja) | 渋滞予測方法 | |
US20200298885A1 (en) | Vehicle control apparatus, vehicle control method, vehicle, and storage medium | |
JP2006290149A (ja) | 車両用走行制御装置 | |
JP5909144B2 (ja) | 車群解消システム | |
JP2012117938A (ja) | 車両用情報処理装置 | |
JP2019108020A (ja) | 自動運転車両に搭載される制御装置および方法 | |
JP5501208B2 (ja) | 運転支援方法 | |
JP7447870B2 (ja) | 情報処理サーバ、情報処理サーバの処理方法、プログラム | |
JP5450365B2 (ja) | 走行支援システム | |
JP2008150001A (ja) | 追従走行装置 | |
JP6728673B2 (ja) | 信号通過支援装置 | |
JP4483527B2 (ja) | 走行支援装置 | |
JP2013104815A (ja) | ナビゲーション装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180058985.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11848820 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2012548636 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13993607 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11848820 Country of ref document: EP Kind code of ref document: A1 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013014736 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112013014736 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130612 |