JP3639008B2 - Wiper control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a front window of a vehicle such as an automobile.(The windshield)Wiper equipmentDriveThe present invention relates to a wiper control device to be controlled, and in particular, relates to an apparatus for wiping rainwater jumped up by a preceding vehicle.
[0002]
[Prior art]
In recent years, a comprehensive driving support system that actively assists driving operations, so-called ADA system, in order to dramatically improve safety of vehicles such as automobiles, that is, preventive safety from falling into a dangerous state from the beginning. (Active Drive Assist system) has been developed. This ADA system recognizes road conditions, white lines, traffic environment, etc. from the image data of the front monitoring camera mounted on the vehicle, and the driver is driving with a reduced awakening level due to falling asleep or driving aside Predict the possibility of lane departure, rear-end collision, etc. As a way of driving support when a lane departure or the like is predicted, based on the idea that the vehicle is operated by a human being, the driver first issues an alarm to prompt the driver to perform an avoidance operation. If the driver does not properly avoid the operation even if an alarm is issued, it is suggested to automatically control the driving operation system of the brake, throttle or steering to the safe side, or assist the driver to temporarily substitute the driving operation Has been.
[0003]
The front monitoring camera is installed, for example, on a ceiling in a vehicle compartment, and images a landscape and an object in front of the vehicle through a front window. For this reason, if a large amount of rainwater adheres to the front window during running on rainy weather or if it becomes cloudy and the field of view deteriorates, the performance of image recognition by the image signal of the front monitoring camera will deteriorate. Of course, the visibility of the driver itself also deteriorates. Therefore, when driving in the rain, etc., the wiper device provided on the front window is operated to wipe the outer surface of the window, and the air conditioning air is blown from the defroster if necessary using the air conditioner, and the view of the driver and the front surveillance camera It is required to ensure good.
[0004]
The wiping speed of the wiper device is generally set by judging the amount of rain that the driver hits the front window. On the other hand, when traveling on a main road or an expressway, rainwater or the like jumped up by a preceding vehicle in the own lane or the adjacent lane often hits the front window, resulting in poor visibility. Deterioration of visibility due to the jumping rainwater of the preceding vehicle occurs more frequently in situations where the preceding vehicle is nearby and cares about driving operations, which may impair safety. In addition, the driver is surprised by the jumping rain water of the preceding vehicle, and is forced to change the wiper device's wiping speed.
[0005]
Here, attention was paid to the fact that various information about the preceding vehicle can be obtained from the image data obtained by the front monitoring camera of the ADA system, and cloudiness of the window can be determined. Therefore, by using these pieces of information, it is possible to prevent the above-mentioned deterioration of visibility, deterioration of safety, troublesomeness of switching wiper wiping speed, fogging of the window, etc. due to rain water etc. There is expected.
[0006]
Conventionally, with respect to the wiper control device, there is a prior art disclosed in, for example, Japanese Patent Laid-Open No. 4-163257. In this prior art, the rain sensor detects the amount of raindrops on the front window and controls the wiper wiping speed. Further, it is shown that a change in the engine rotational speed determines whether the vehicle is shifted from a stopped state to a traveling state or a transition from a traveling state to a stopped state, thereby preventing a delay in wiping timing.
[0007]
[Problems to be solved by the invention]
By the way, in the above prior art, since the rain sensor detects the amount of raindrops on the front window and controls the wiper wiping speed, it can cope only with the actual rainwater adhesion state. For this reason, it is impossible to prevent various problems due to rain water and the like that the preceding vehicle has jumped up. There are also problems such as being unable to cope with cloudy front windows.
[0008]
  In view of these points, the present inventionWhen driving in rainy weatherADA systemTo provide a wiper control device capable of preventing driver performance degradation and improving driver safety.With the goal.
[0009]
[Means for Solving the Problems]
  the aboveTo achieve the purposeContractIn claim 1Described inventionAs shown in FIG.An ADA system 1 having an image recognition means 4 for converting an image captured by a front monitoring camera 3 arranged inside the front window 2 so as to be within a wiper wiping range S into image data recognizing a road and a traffic environment is used. In the wiper control device that drives and controls the wiper device 10,
  Using at least one of the on-board switch and various sensorsRainy weather detection means 21 for detecting whether it is rainy weather driving,When the rainy run detection means 21 detects a rainy run,Image recognition meansFourPreceding vehicle M based on image dataIf the distance between the vehicles is long, it is determined that there is little jumping of rainwater by the preceding vehicle M, and if the distance between the vehicles is shortRaising rainwater by the preceding vehicle MWhen there are manyA preceding vehicle determination means 22 for determining, and the preceding vehicle determination means 22Determines that there is a lot of rainwater jumping by the preceding vehicle M,The wiping speed of the wiper device 10Automatically on the high speed sideWiping speed control means 23 for controllingTheIt is characterized by that.
[0010]
  To achieve the above purposeClaim 2The invention described isClaim 1In addition to the configuration of the invention, the preceding vehicle determination unit 22 determines whether the preceding vehicle is a large vehicle based on the image data of the image recognition unit 4 when the rain travel detection unit 21 detects rain travel. If the preceding vehicle is determined to be a large vehicle, it is determined that there is a lot of rainwater jumping by the preceding vehicle regardless of the distance between the vehicles.It is characterized by doing.
[0011]
  To achieve the above purposeClaim 3The invention described isClaim 1 or 2In addition to the configuration of the invention,The wiper control deviceThe image signal of the image captured by the front monitoring camera 3 is dark and the distance data is abnormal, and the shutter speed of the front monitoring camera 3 is slower than a predetermined value, and the operation switch of the wiper device 10 is operated. If the state is different from ON, determine the cloudiness of the front window 2 aboveThe auto air conditioner 30 is operated as a defroster.Provided with a window dirt judging means 24It is characterized by that.
[0012]
  In order to achieve the above object, the invention according to claim 4 is an image obtained by recognizing a road and a traffic environment from an image captured by the front monitoring camera 3 disposed inside the front window 2 so as to be within the wiper wiping range S. In the wiper control device that drives and controls the wiper device 10 using the ADA system 1 having the image recognition means 4 that converts the data into data,
  The rain travel detection means 21 detects whether or not it is rain travel using at least one of a switch mounted on the vehicle and various sensors, and the image recognition means 4 when the rain travel detection means 21 detects rain travel. Whether or not the preceding vehicle M is a large vehicle is determined. If the preceding vehicle is different from the large vehicle, it is determined that there is little jumping of rainwater by the preceding vehicle M, and the preceding vehicle is a large vehicle. In the case of a car, the preceding vehicle determination means 22 that determines that there is a lot of rainwater jumping by the preceding vehicle M, and the wiper when the preceding vehicle determination means 22 determines that the rainwater jump by the preceding vehicle M is large. Wiping speed control means 23 for automatically controlling the wiping speed of the apparatus 10 to the high speed side;It is provided with.
[0016]
[Action]
  According to the first aspect of the present invention, when the rain traveling detection means 21 detects rain traveling, the preceding vehicle determination means 22 determines the length of the inter-vehicle distance from the preceding vehicle M based on the image data of the image recognition means 4. It is determined that when the inter-vehicle distance is long, it is determined that there is little jumping of rainwater by the preceding vehicle M, and when the inter-vehicle distance is short, it is determined that there is much jumping of rainwater by the preceding vehicle M. When the preceding vehicle determination means 22 determines that there is a lot of rainwater jumping by the preceding vehicle M, the wiping speed control means 33 automatically controls the wiping speed of the wiper device 10 to the high speed side.
[0017]
  As a result, even if a large amount of rain water that the preceding vehicle M actually jumps up adheres to the front window 2, the front window 2 can be wiped instantaneously by the blade 11 of the wiper device 10 that has been wiped at a high speed in advance. Because you canWith driverForward monitoringCamera 3WhenThe field of viewalwaysSecured well. Therefore,When driving in rainy weatherADA system1Image recognition performance degradationIn advancePrevent the driverofsafetyTheIncreaseCan provide a wiper control device.
[0018]
  Claim 2According to the invention described above, the preceding vehicle determination means 22 determines that there is a lot of rainwater jumping if the preceding vehicle is a large vehicle. Thus, in addition to the function and effect of the first aspect of the invention, the wiping speed control means 33 automatically increases the wiping speed of the wiper device 10 to the high speed side if the preceding vehicle is a large vehicle even if the inter-vehicle distance is long. Since the control is performed, the visibility of the driver and the front monitoring camera 3 is always kept good during rainy weather.
[0019]
  Claim 3According to the invention described in (4), the window dirt determination means 24 is a predetermined one in which the image signal of the image captured by the front monitoring camera 3 is dark and the distance data is abnormal, and the shutter speed of the front monitoring camera 3 is set in advance. When the speed is less than the value and the operation switch of the wiper device 10 is different from ON, it is determined that the front window 2 is cloudy and the auto air conditioner 30 is operated as a defroster. Thereby, in addition to the operation and effect of the invention described in claim 1 or 2, the fogging of the front window 2 automatically disappears, so that it is possible to further improve the safety during rainy driving.
[0020]
  According to the fourth aspect of the present invention, when the rain traveling detection unit 21 detects rain traveling, the preceding vehicle determination unit 22 determines whether the preceding vehicle M is a large vehicle based on the image data of the image recognition unit 4. It is determined that when the preceding vehicle M is different from the large vehicle, it is determined that there is little rainwater jumping, and when the preceding vehicle M is a large vehicle, it is determined that there is much rainwater jumping. When the preceding vehicle determination means 22 determines that there is a lot of rainwater jumping by the preceding vehicle M, the wiping speed control means 33 automatically controls the wiping speed of the wiper device 10 to the high speed side. As a result, if the preceding vehicle M is a large vehicle, the wiping speed of the wiper device 10 is automatically controlled to the high speed side, so that the rain water splashed by the preceding vehicle M adheres to the front window 2 so that it can be wiped instantaneously. Therefore, the field of view between the driver and the front monitoring camera 3 is always secured satisfactorily. Accordingly, it is possible to provide a wiper control device capable of preventing the image recognition performance of the ADA system 1 from being lowered during rainy weather driving and increasing the safety of the driver..
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 2, an example of an ADA system and a wiper device using the ADA system will be described. In the ADA system 1, two CCD cameras 3 are disposed as a front monitoring camera in a vehicle interior inside a front window 2 of the vehicle. Here, the front window 2 is provided with, for example, an overlap type wiper device 10. In the wiper device 10, two blades 11 are connected to a wiper motor 13 via a link mechanism 12, and the two blades 11 are swung so as to approach or separate from each other by driving the motor to wipe the outer surface of the window 2. Configured as follows. Therefore, the two CCD cameras 3 are arranged on the front window 2 on the upper and left sides within the wiping range S by the blade 11, and the sight of the camera 3 can be secured by wiping the blade 11.
[0025]
The image signal from the CCD camera 3 is input to the image recognition means 4. The two CCD cameras 3 capture and capture a landscape and an object in front of the vehicle in a stereo manner. The image recognition means 4 calculates the distance by processing the image signals picked up by the two CCD cameras 3 by the triangulation method using the stereo method, and creates a distance image having a three-dimensional distance distribution on the entire screen. Then, a lane, a preceding vehicle, an obstacle, and the like are separated and detected from the distance image, and the left and right white lines and the three-dimensional shape of the road are recognized from the lane. In addition, it recognizes what the object ahead is, the relative distance and speed with respect to the preceding vehicle and obstacles, and thus obtains image data of the road and traffic environment.
[0026]
Further, when the image signal of the camera 3 becomes dark in the entire area, the distance data becomes maximum in the entire area or the distance distribution becomes abnormal. Therefore, it is possible to determine whether the outside is dark or the window 2 is dirty or cloudy by referring to the distance data abnormality.
[0027]
The image data of the image recognizing means 4 is input to the lane departure determining means 5 to determine the possibility of the left and right lane departure of the vehicle. When predicting the deviation of the vehicle from the travel lane, for example, the positions YL and YR of the left and right white lines H1 and H2 of the travel lane are measured, and the width D of the lane is calculated by D = YR−YL. Further, the position Y with respect to the lane center line O of the vehicle is calculated by Y = (B / 2) −YR = − (YR + YL) / 2. Based on the tread W of the vehicle, the position Y, and the width D of the lane, a deviation from the left lane is predicted when (−W / 2) + Y ≦ −D / 2, and a right side when (W / 2) + Y ≧ D / 2. Predict lane departure. The possibility of a rear-end collision is also predicted based on the distance between the host vehicle and the preceding vehicle, the vehicle speed and acceleration / deceleration of the host vehicle and the preceding vehicle, and the like.
[0028]
When the driver's awakening level is reduced due to falling asleep or the like, and the possibility of lane departure is predicted by driving aside, the lane departure etc. determining means 5 issues an alarm from the alarm device 6. As a result, it is possible to notify the driver of the departure from the lane and to prompt an avoidance action.
[0029]
The wiper device 10 includes a wiper switch 14 provided near the driver's seat and a control unit 20 that performs wiping control using image data. A signal from the wiper switch 14 is input to the driving means 15 to control the wiper motor 13 in accordance with operations of LOW, HIGH, and INT (intermittent time is variable).
[0030]
The control means 20 detects whether or not the vehicle is running in the rain using the signals from the wiper switch 14 and the vehicle speed sensor 16 in the rain running detection means 21. Moreover, it has preceding vehicle determination means 22 for inputting image data of the image recognition means 4. Here, when the distance between the preceding vehicle M and the preceding vehicle M is long, even if the preceding vehicle M jumps up the rainwater, the amount applied to the front window 2 is very small, but when the distance is short, a large amount of rainwater is applied. When the preceding vehicle M is a large vehicle, a large amount of rainwater is applied to the front window 2 even if the inter-vehicle distance is long. In view of the rainwater jumping state by the preceding vehicle M, the inter-vehicle distance from the preceding vehicle M is detected. Further, a small vehicle and a large vehicle are determined based on the vertical and horizontal sizes, the vehicle width, and the like of the preceding vehicle M.
[0031]
The inter-vehicle distance from the preceding vehicle M and the size of the preceding vehicle M are input to the wiping speed control means 23, and the wiping speed is determined according to the size of the preceding vehicle M and the inter-vehicle distance. That is, since the distance between the preceding vehicle M and the preceding vehicle M is short, or when the preceding vehicle M is a large vehicle, the amount of rain jumped by the preceding vehicle M is large, so the wiping speed is uniformly set higher than the driver's set speed. Then, this speed signal is input to the driving means 15 to automatically control the speed of the wiper motor 13.
[0032]
Further, there is a window dirt determination means 24 for inputting image data, wiper switch 14, vehicle speed, air conditioner of auto air conditioner 30, and signals of defroster switches 31, 32. When the distance data abnormality of the image data and the dirt on the outside of the window 2 are determined based on these signals, the wiper is operated by the driving means 15.
[0033]
The image data of the image recognition means 4 is further input to the auto air conditioner 30 and the auto light device 40. When the air conditioner switch 31 is turned on, the auto air conditioner 30 operates the compressor 34 and the blower motor 35 by the control means 33 to harmonize the air with the conditioned air. Further, the switching motor 36 is operated by operating the defroster switch 32, and for example, cool air is blown out from the defroster to remove the fogging of the window 2. In addition, the control means 33 is for detecting abnormal distance data in the image data,Shutter speed,When the vehicle speed and the wiper switch 14 determine cloudiness inside the window 2, the defroster is automatically operated. The auto light device 40 is a control hand.Stage 4When it is determined in 1 that the outside has become dark due to an abnormality in the distance data of the image data, the headlight 42 is automatically turned on.
[0034]
Next, wiper control, air conditioner control, and light control will be described with reference to the flowcharts of FIGS. First, initialization is performed (step S1), the position Po of the wiper switch 14 and the intermittent time to are read (step S2), the air conditioner switch and the defroster switch are read (step S3), and the output signal of the ADA system is read (step S4). . Then, the operation of the ADA system is checked (step S5). If the ADA system is not operated, the warning light of the ADA system is turned on (step S12), and the wiper switch 14 is held (step S22).
[0035]
When the ADA system operates, the distance data is checked (step S6), and when the distance data is abnormal, the shutter speed of the camera 3 is checked (step S7). If the shutter speed is less than the predetermined value and slow, it is determined that the outside is dark, and the auto light device 40 is activated (step S13). For this reason, the visibility of the driver and the camera 3 is improved, and in particular, the image recognition performance of the ADA system 1 is kept high.
[0036]
If it is determined that the shutter speed is equal to or higher than the predetermined value and the outside is bright, the wiper switch 14 is checked (step S8). If the wiper is not activated, the vehicle speed V is checked (step S14). When the vehicle is running, it is determined that the outside of the window 2 is dirty, and the wiper is intermittently operated with the shortest tmin (step S15). Therefore, dirt that adheres to the outer surface of the front window 2 during traveling is automatically removed by wiping the blade 11 of the wiper device 10.
[0037]
Further, when the vehicle is stopped, since the outside of the window 2 is not stained, it is determined that the inside of the window 2 is cloudy, and the defroster is operated (step S16). For this reason, the fog inside the front window 2 disappears automatically when the defroster is activated.
[0038]
When the wiper switch 14 is turned on in the rain, the defroster switch 32 is checked (step S9). When the defroster is not operated, the defroster is activated by determining the clouding inside the window 2 as described above (step S16). Disappear. When the defroster switch 32 is turned on, the air conditioner switch 31 is checked (step S10). When the air conditioner is not activated, the wiper and the defroster are activated, but it is determined that the inside of the window 2 has become cloudy due to the rise in the room temperature, and the air conditioner is activated (step S11). For this reason, the defroster is operated with cold air, and the cloudiness in this case also disappears.
[0039]
When the air conditioner is operated by turning on the air conditioner switch 31, it is difficult to see even if all of the wiper, defroster and air conditioner are activated. The wiper HIGH speed is activated (step S17). For this reason, the blade 11 of the wiper device 10 is wiped at a high speed, and a large amount of jumping of the outer surface of the front window 2 is reliably removed by this wiping.
[0040]
In this way, the cloudiness on the inside of the front window 2 and the dirt on the outside are appropriately determined based on the distance data abnormality of the image data. Then, the fogging and dirt of the window 2 are automatically removed using the wiper device 10 and the auto air conditioner device 30, thereby ensuring a good visibility of the driver and the camera 3 at all times.
[0041]
When it is determined in step S6 that the distance data is normal, the distance data is operated according to the air conditioner switch 31 (step S18), and the distance data is operated according to the defroster switch 32 (step S19). In this case, the distance L between the preceding vehicle M and the set value Lo (v) of the function of the vehicle speed V is compared to determine the length of the distance L between the vehicles (step S20). Here, the set value Lo (v) is set as an increase function with respect to the vehicle speed V. For this reason, the inter-vehicle distance L becomes shorter as the vehicle speed is lower, and the amount of rain that actually takes up by the preceding vehicle M is appropriately determined.
[0042]
When the inter-vehicle distance L is long, the size A of the preceding vehicle M is compared with the set value Ao to determine whether the vehicle is a small vehicle or a large vehicle (step S21). If the preceding vehicle M is a small vehicle, it is determined that the amount of rainwater splashed up for the small vehicle from the front vehicle 2 is very small on the front window 2, and the wiper switch 14 is kept in the set state (Po, to). (Step S22).
[0043]
Further, when the inter-vehicle distance L is short or the preceding vehicle M is a large vehicle even if the inter-vehicle distance L is long, it is determined that a large amount of jumping rainwater is applied by the preceding vehicle M, and the vehicle speed V is checked (step S23). While the vehicle is stopped, there is no jumping up by the preceding vehicle M, so the wiper switch 14 is kept in the set state (step S22). When the vehicle is traveling, the operation of the wiper switch 14 is checked (step S24). When the wiper is not operating in fine weather, the wiper switch 14 is kept in the set state (step S22). For this reason, when there is no actual jumping up by the preceding vehicle M, no control is performed.
[0044]
When the driver operates in the rainy weather by turning on the wiper switch 14, the blade 11 of the wiper device 10 is swung by the wiper motor 13 and the raindrops adhering to the outer surface of the window 2 are wiped off. For this reason, the visual field of the CCD camera 3 arranged in the wiper wiping range S is improved along with the visual field of the driver, and the image recognition means 4 can obtain image data appropriately.
[0045]
When driving in rainy weather when a large amount of rain water is predicted by the preceding vehicle M, it is checked whether or not the set position P of the wiper switch 14 is INT (step S25), and LOW or HIGH wiping speed other than INT is used. The wiper HIGH speed is activated (step S28). In INT, the intermittent time t is compared with the shortest time tmin (step S26), and in the case of the shortest time tmin, the wiper LOW speed operation is performed (step S29). If the intermittent time t is longer than the shortest tmin, the wiper is intermittently operated with the shortest tmin (step S27). Therefore, under this condition, the wiping speed of the blade 11 of the wiper device 10 is controlled in advance at a higher speed than the set state of the driver.
[0046]
Therefore, when the inter-vehicle distance L with the preceding vehicle M is short and a large amount of splashed rainwater is actually applied to the front window 2 by the preceding vehicle M, the rainwater is automatically and accurately detected from the beginning by the blade 11 controlled at high speed. Wiped out. The preceding vehicle M is a large vehicle, and in this case as well, if a large amount of rainwater is applied, it is wiped off in the same manner. For this reason, the visibility of the driver and the camera 3 is ensured satisfactorily. Therefore, the image recognition performance of the ADA system 1 is prevented from degrading, and the possibility of a rear-end collision or the like is appropriately predicted particularly when the inter-vehicle distance L with the preceding vehicle M is short. In addition, the driver has good visibility in situations where the preceding vehicle M is close and cares for driving operation, so that safety is increased and the trouble of switching the wiper speed is eliminated.
[0047]
Further, when the inter-vehicle distance L with the preceding vehicle M becomes long and the preceding vehicle M is a small vehicle, the wiper wiping speed returns to the original set state, and unnecessary wiper wiping is avoided. Thus, during rainy weather, rainwater applied to the front window 2 by the jumping up of the preceding vehicle M using the image data of the ADA system 1 is automatically wiped out by the wiper device 10.
[0048]
As mentioned above, although the Example of this invention was described, it can apply to all the vehicles equipped with an ADA system, and is not limited only to the said Example.
[0049]
【The invention's effect】
  As explained aboveBookAccording to the invention,When the rain travel detection means detects rain travel, the preceding vehicle determination means determines the length of the inter-vehicle distance from the preceding vehicle based on the image data of the image recognition means, and if the inter-vehicle distance is long, the rain water from the preceding vehicle It is determined that there is little jumping up, and when the inter-vehicle distance is short, it is determined that there is much jumping up of rainwater by the preceding vehicle. When the preceding vehicle determining means determines that there is a lot of rainwater jumping by the preceding vehicle, the wiping speed control means automatically controls the wiping speed of the wiper device to the high speed side.
[0050]
  ThisDistance from the preceding vehicleLong and shortDepending on the wiper device wiping speedAutomatically on the high speed sidecontrolIsSo, it ’s raining by the preceding carwaterThe rainwater can be reliably removed by judging the amount appropriately. Because the front window has good visibility, the image recognition performance of the ADA system is degraded.In advancePrevent the driverofIncreased safety.further,Since the wiper wiping speed is automatically controlled, the trouble of switching the wiper speed is eliminated.Furthermore,Since the image data of the ADA system is used, the application of the ADA system is expanded.
[0051]
  Furthermore, according to the present invention, the preceding vehicle determination means determines that the rainwater jumps frequently if the preceding vehicle is a large vehicle. As a result, even if the inter-vehicle distance is long, if the preceding vehicle is a large vehicle, the wiping speed control means automatically controls the wiping speed of the wiper device to the high speed side. Even if rainwater adheres to the front window, the front window can be wiped instantly by the blade of the wiper device that has been wiped at a high speed in advance. Will be kept in good condition.
[0052]
  Furthermore, according to the present invention, the window dirt judging means has a dark image signal of an image captured by the front monitoring camera and abnormal distance data, and the shutter speed of the front monitoring camera is less than a predetermined value set in advance. If the operation switch of the wiper device is different from the ON state, it is determined that the front window is cloudy and the automatic air conditioner is operated as a defroster. As a result, the cloudiness of the front window automatically disappears, so that safety during rainy weather driving can be further improved.
[0053]
  Moreover, according to the present invention,When the rain travel detection means detects rain travel, the preceding vehicle determination means determines whether the preceding vehicle is a large vehicle based on the image data of the image recognition means, and if the preceding vehicle is different from the large vehicle, If the preceding vehicle is a large vehicle, it is determined that there is much rainwater jumping. When the preceding vehicle determining means determines that there is a lot of rainwater jumping by the preceding vehicle, the wiping speed control means automatically controls the wiping speed of the wiper device to the high speed side. As a result, if the preceding vehicle is a large vehicle, the wiping speed control means automatically controls the wiping speed of the wiper device to the high speed side, so that a large amount of rain water actually jumped up by the large preceding vehicle will enter the front window. Even if it adheres, the front window can be wiped instantly by the blade of the wiper device that has been wiped at a high speed in advance, so that the visibility of the driver and the front monitoring camera is always kept good during rainy weather It comes to be. Accordingly, it is possible to provide a wiper control device capable of preventing the image recognition performance of the ADA system from being lowered during rainy weather driving and increasing the safety of the driver..
[Brief description of the drawings]
FIG. 1 is a claim correspondence diagram showing a configuration of a wiper control device according to the present invention.
FIG. 2 is a functional block diagram of an embodiment of the wiper control device of the present invention.
FIG. 3 is a flowchart of wiper control, air conditioner control, and light control.
FIG. 4 is a flowchart of the control.
[Explanation of symbols]
2 Front window
3 CCD camera (front monitoring camera)
4 Image recognition means
10 Wiper device
21 Rain running detection means
22 Advance vehicle judgment means
23 Wiping speed control means

Claims (4)

The wiper device is driven using an ADA system having an image recognition means for converting an image captured by a front monitoring camera arranged inside the front window so as to be within a wiper wiping range into image data recognizing a road and traffic environment. In the wiper control device to control,
A rain travel detection means for detecting whether or not the vehicle is raining using at least one of a switch mounted on the vehicle and various sensors ;
When the rain travel detection means detects rain travel, the distance between the preceding vehicle and the preceding vehicle is determined based on the image data of the image recognition means. determines that up is small, a preceding vehicle judgment means judges that often drive-up rainwater by the preceding vehicle when the vehicle distance is short,
Wiper, characterized in that said preceding vehicle judgment means when it is determined that there are many drive-up of rainwater by the preceding vehicle, and a wiping speed control means for automatically controlling the high-speed side wiping speed of the wiper device Control device. The preceding vehicle determining means determines whether or not the preceding vehicle is a large vehicle based on the image data of the image recognition means when the rainy running detection means detects rainy traveling, and determines that the preceding vehicle is a large vehicle. Then, the wiper control device according to claim 1, wherein it is determined that there is a lot of rainwater jumping by a preceding vehicle regardless of the distance between the vehicles . In the wiper control device, the image signal of the image captured by the front monitoring camera is dark and the distance data is abnormal, and the shutter speed of the front monitoring camera is slower than a preset predetermined value, and the wiper device 3. The wiper control according to claim 1, further comprising: a window dirt determination unit configured to determine whether the front window is cloudy when the operation switch is turned on and to operate the auto air conditioner device as a defroster. apparatus. The wiper device is driven using an ADA system having an image recognition means for converting an image captured by a front monitoring camera arranged inside the front window so as to be within a wiper wiping range into image data recognizing a road and traffic environment. In the wiper control device to control,
A rain travel detection means for detecting whether or not the vehicle is raining using at least one of a switch mounted on the vehicle and various sensors;
When the rain traveling detection means detects rain traveling, it is determined whether or not the preceding vehicle is a large vehicle based on the image data of the image recognition means, and if the preceding vehicle is different from the large vehicle, the preceding vehicle A preceding vehicle judging means for judging that there is little jumping of rainwater by the vehicle, and determining that there is much jumping of rainwater by the preceding vehicle when the preceding vehicle is a large vehicle,
A wiper comprising: a wiping speed control means for automatically controlling the wiping speed of the wiper device to a high speed side when the preceding vehicle determination means determines that there is a lot of rainwater jumping by the preceding vehicle. Control device.

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