Method to monitor "blind area" of going ahead vehicle side mirrors and device for this method implementation

FIELD: transport.

SUBSTANCE: in the first version, the method includes determination of presence of a vehicle moving ahead along adjacent lane in concurrent direction using video camera, measurement of distance to the vehicle with calculation of its side mirrors "blind area" position and rear vehicle position relative to "blind area", as well as determination of its type and dimensions, warning about hazardous proximity using indicators located in instrument cluster, assistance in the process of vehicle driving through vehicle deceleration in case when driver of vehicle moving ahead along adjacent lane begins to execute unsafe manoeuvre. In the second version, monitoring system switches on video camera, ultrasonic sensors and microcontroller. The ultrasonic sensors located on vehicle front bumper determine position of moving ahead vehicle side mirrors "blind area". Microcontroller produces warning signals for driver about vehicle entry into "blind area" of going ahead vehicle.

EFFECT: higher traffic safety due to automatic monitoring of moving ahead vehicle blind area condition.

7 cl, 3 dwg

 

The proposed solution relates to a method of improving visibility of environment and Supervisory devices of vehicles, namely, devices for improving environmental review of the situation and assist the driver when performing maneuvers, and is intended for installation and use on cars, trucks, and buses.

Known system rear view mirrors in automobiles and other vehicles (for example, patent RU 2286267 C1, 09.11.2004), consisting of the interior rear-view mirror (normal, prismatic, panoramic) and two exterior side mirrors. This conventional system has several disadvantages. The main disadvantage lies in the existing system effect "blind zone" - when there is a car in the next row, and a little behind, not visible or in the cabin or in the side mirrors. Control of this "blind spot" is extremely important when rebuilding the vehicle in traffic.

To ensure traffic safety, ceteris paribus, the driver needs continuous full information about the rapidly changing environment not only behind his car, but ahead on both sides of a moving car.

Known system of external video cameras (for example, patent RU 2096202 C1 from 26.08.96) or systems using fiber optics, carry in is ormatio on the windshield, however, these are expensive and easily damaged system have not yet found wide application due to failure by contamination of the optical elements.

Known patents, in which the image from the outer side of the mirror is transferred to the cabin, bringing the image side space to the driver (for example, patent RU 2127201 C1, 03.04.95). In these patents the outer side mirror turns into a complex optical device using combinations of lenses and prismatic devices. A significant drawback is the need to install exterior side mirror at an acute angle to the longitudinal axis of the machine. In this situation mirrors greatly reduced area side view.

The closest technical solution to the proposed device is "control System "blind zone side mirror of the car" (Patent RU No. 96822, B60R 1/02, 20.04.10), consisting of ultrasonic sensors located on the rear bumper of the vehicle, the condition of which is polled by a computational core of the system. Drawback - the inability to control the state of the "blind zone" moving ahead of the vehicle.

The problem solved by the invention was to inform the driver about the presence of his vehicle in the "blind zone side mirror of a car ahead of with the purpose of assistance to the driver when the Board named TC.

The technical result consists in the automatic control state "blind zone" moving ahead of the vehicle and help the driver when you rebuild this vehicle, which is achieved due to the fact that the driver issued a warning signals: if you are viewing a system of "blind zone" of the vehicle is detected, the system alerts the driver by means of indicators.

The problem is solved by the use of ultrasonic sensors located on the front bumper of the vehicle, and also video cameras, which polled computational core of the system that not only allows you to automatically monitor the status of the "blind zone" of a moving vehicle ahead, even in poor visibility conditions, but also to provide active assistance to the driver in the process control of the vehicle.

Since each car model has its own design features, in particular dimensions, and it is unknown in the "blind zone" of any vehicle (car, truck, or bus) can get a car, it is not possible to determine in advance the parameters of this "blind spot". Thus, there is a need to control not only the distance to the front vehicle, but determine the overall parameters of this vehicle.

The use of video cameras in the control systems of objects, you are not the only to observe the situation around the vehicle, but to determine the type and size being overtaken vehicle. A significant problem with the use of video cameras is the determination of the distance to the vehicle. In the developed system, this problem is solved by applying a measure of the distance described above.

The invention is illustrated by the following figures:

in Fig.1 schematically shows the principle of the proposed control system "blind zone" ahead of the vehicle;

in Fig.2 presents the structure of the control system of the "blind zone" ahead of the vehicle;

in Fig.3 shows a simplified algorithm of the control system, the "blind zone".

The structure of the control system of the "blind zone" can be represented as a single computing module, the kernel of the system, which is the microcontroller, and 2 or 3 (depending on variant) interacting with him working modules (Fig.2):

the control module hit the vehicle in the region of the "blind zone" ahead of the vehicle;

module light indication;

- additional module for controlling the speed of the vehicle.

The very core of the control system of the "blind zone" is a simple schematic in the center of which is the microcontroller. This scheme is located in a small plastic case (140×110×35 mm), which may be located, for example, under the instrument panel to the vehicle, or in his bonnet about what transto.

The control unit CU in the "blind zone" consists of two or four (depending on variant) ultrasonic sensors located on the front bumper, and video cameras. Two sensors are installed at an angle of about 30° to the longitudinal axis of the vehicle, two additional sensor installed in the direction of vehicle movement and control of rebuilding ahead of the vehicle. Information from the sensors is fed to the microcontroller. For images from the video camera, the method of pattern recognition. The recognition system is based on the method of enumeration, i.e. a comparison with the database, where for each type of interest presents various modifications of the display. If an image when compared with the elements of the database will be TC, the system will calculate whether feature of the proposed system TS into this "blind zone" moving ahead of the vehicle. In case of contact with the system warns about dangerous rapprochement with the help of indicators, located on the instrument panel.

Module light indication consists of two LEDs, located on the instrument panel of the vehicle. When the vehicle enters the blind zone, the signal from the sensors is transferred to the microcontroller, which analyzes the distance to this vehicle and informs via led indicators on the hit his vehicle in the blind AOR is" TC, moving on the adjacent lane and a little ahead. Thus, the driver learns that his vehicle was caught in a "blind zone" of another vehicle. The system does not respond to a parked vehicle, road fences, poles and other stationary objects, which allows to avoid false positives. The system is activated at speeds above 10 km/h

The use of such system design control "blind spot" can significantly reduce the likelihood of traffic accidents at a relatively low cost of the system.

1. The way of control "blind zone" of the side mirrors of the vehicle in front, including the detection of moving ahead on the adjacent lane in the same direction of the vehicle by means of a camera, measuring the distance to the vehicle by calculating the position of the "blind zone" of his side mirrors and rear position of the vehicle relative to the "blind zone", and the definition of its type and size, a warning about the dangerous rapprochement with the help of indicators, located on the instrument panel, assistance in the process of control of the vehicle by reducing the speed of the vehicle in case the vehicle driver is moving ahead on the next strip, starts performing a dangerous maneuver.

2. Control system blind the ons" side mirrors of the vehicle in front, includes ultrasonic sensors, which are polled computational core of the system, characterized in that the system includes a video camera and ultrasonic sensors located on the front bumper of the vehicle, the condition of which is polled by a computational core of the system, consisting of a kernel, which is the microcontroller, which generates a warning signal to the driver control module hit a vehicle in the blind zone of the vehicle ahead and module LEDs, two LEDs, located on the instrument panel of the vehicle.

3. Control system "blind zone" of the side mirrors of the vehicle in front on p. 2, characterized in that for monitoring the status of the "blind zone" uses two ultrasonic sensors mounted on the front bumper of the vehicle at an angle of about 30° to the longitudinal axis of the vehicle.

4. Control system "blind zone" of the side mirrors of the vehicle in front on p. 2, characterized in that for monitoring the status of the "blind zone" uses four ultrasonic sensors mounted on the front bumper of the car, while two of them are located at an angle of about 30° to the longitudinal axis of the vehicle, and the other two to be yaytsa in the direction of movement of the vehicle and control the rebuilding of the vehicle ahead.

5. Control system "blind zone" of the side mirrors of the vehicle in front on p. 2, characterized in that the computational core of the system further comprises a control module vehicle speed.

6. Control system "blind zone" of the side mirrors of the vehicle in front on p. 2, characterized in that the computational core of the system is a scheme, in the center of which is the microcontroller, which is located in a small plastic case size 140×110×35 mm, which may be mounted either under the dashboard of the vehicle or its engine compartment.

7. Control system "blind zone side mirror preceding vehicle according to any one of paragraphs.2-6, characterized in that if the driver of a vehicle moving ahead on the next band begins to perform dangerous maneuver, the system slightly reduces the speed of the vehicle.



 

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