RU158811U1 - DEVICE OF AUTOMATED CONTROL OF SPEED MODE OF MOTOR TRANSPORT - Google Patents

Abstract

1. A device for automated control of the high-speed mode of vehicles, which includes two video cameras, a computer and a global navigation system receiver, characterized in that the video cameras are located at the same control line inside a single building, while the first video camera is installed with the possibility of photo and video recording of vehicles at the far border controlled area, and the second video camera is installed with the possibility of photo and video recording of vehicles on the near border of controlled A computer, a computer includes a synchronization unit, a memory module, and software and hardware that enable the identification of vehicles crossing the boundaries of the controlled area by recognizing their load, calculating the distance from the cameras to the identified vehicles, calculating the average speed of vehicles in the controlled area, and recording violations .2. The device according to claim 1, characterized in that it includes at least one surveillance video camera. The device according to claim 1, characterized in that at least one video camera is telephoto. The device according to claim 1, characterized in that at least one video camera is short-focus.

Description

The utility model relates to control and measuring equipment and is intended for automated monitoring of compliance with traffic rules, namely, to a device for automated control of high-speed mode of vehicles. The device automatically identifies state registration plates (GRZ) of vehicles (TS), calculates the average vehicle speed on the site and fixes speed violations.

A device for fixing violations of the high-speed mode of movement of automobile transport (RF patent No. 110856, IPC G08G 1/054, published on 11/27/2011) containing at least two recorders, each of which includes at least one computer and a video camera, is made with the ability to capture the image of the vehicle, each registrar is equipped with a receiver of the global satellite navigation system for communication with the global satellite navigation system and is configured to determine its geographic x coordinates and time synchronization, in addition, the computer is connected via an firewall with a cryptographic provider to an adapter and a modem, which is connected via an operator’s communication system via a data network to a computer center, which is capable of calculating the vehicle’s speed using data received from at least two registrars, moreover, the cryptographic provider is installed with the ability to protect the processed data by the registrar with an electronic digital signature.

The disadvantage of this device is the inability to obtain reliable data on violations of the high-speed mode of vehicles in relatively short sections of the road (several hundred meters). A significant error in the calculations does not allow the use of the device in such conditions. In addition, for the operation of the device requires the installation of a computer and a GPS receiver with each camcorder, which increases costs.

A device is known for fixing violations of the high-speed mode of movement of automobile transport (RF patent No. 101243, IPC G08G 1/052, published January 10, 2011), containing two computer units mounted on the boundaries of a given length of the road, equipped with video cameras designed to transmit data to computer blocks for recognition of license plates, as well as a communication channel between the first and second computer blocks.

The specified device requires the installation of a computer with each camcorder, which significantly increases costs. In addition, the lack of time synchronization of cameras can adversely affect the accuracy of the device and the reliability of the data.

The prior art device for determining the speed and coordinates of vehicles with their subsequent identification and automatic registration of violations of the rules of the road (RF patent No. 2382416, IPC G08G 1/052, G08G 1/017, G07C 5/08, publ. 02.20.2010 ), containing a radar, at least one video camera recognizing the state registration mark, and a control and data processing unit connected to them, the radar contains a signal processing module that calculates the speed and range of all vehicles, finding existing in a selected section of the roadway.

The specified device for measuring the speed of vehicles uses a radar emitting radio signals that can be detected by special means (radar detectors) of road users. This greatly reduces the overall system performance.

The technical result of the claimed utility model is the creation of a device for automated control of the high-speed mode of vehicles, characterized by increased accuracy and reliability, low operating and maintenance costs.

The specified technical result is achieved in that the device for automated control of the high-speed mode of vehicles includes at least two video cameras, a computer and a receiver of the global navigation system, while the video cameras are located at the same control line inside a single building, the first video camera is installed with the possibility of photo-video recording of vehicles the far border of the controlled area, and the second video camera is installed with the possibility of photo-video recording of vehicles in the near -th border of the monitored area, the computer includes a synchronization unit, a memory module and hardware and software that enable the identification of vehicles crossing the boundaries of the monitored area by recognizing their burdens, calculating the distance from the cameras to the identified vehicles, calculating the average speed of vehicles in the monitored area and fixing violations.

In some embodiments, the inventive device may be further equipped with an overview video camera for receiving overview frames. These frames can be used as an additional evidence base for fixing violations.

The essence of the utility model is illustrated in FIG. 1 and FIG. 2.

In FIG. 1 shows a general block diagram of a device.

The claimed device is a system that includes the following basic elements:

- a computer containing information processing means, a synchronization unit and a memory module, and

- video cameras 1 and 2 installed in a single building with the possibility of photo-video recording of vehicles within a controlled section of the road,

- receiver global navigation system.

In FIG. 2 shows a diagram of the installation of the device along the roadway and the visual control zone of the camera 1 and 2 within the controlled section of the road.

The device, which is a monoblock, contains in a single case two cameras with a lens, a computer and a navigation receiver. Inside the case, the video cameras are placed relative to each other in a certain way - so that when the device is installed on the side of a straight section of the road, the first video camera captures vehicles crossing the far border of the controlled road section (100-150 m from the device), and the second video camera captures vehicles crossing the nearest border of the controlled section of the road (20-50 m from the device). For these purposes, telephoto and telephoto cameras are preferably used, respectively.

To synchronize the internal time of the system with global time, the device is equipped with a receiver of the global navigation system.

The computer contains software and hardware tools that provide processing functions of information received from video cameras (capture of a vehicle’s image, recognition of a vehicle’s GRD shown in the frame) and its use to calculate the average speed of vehicles on a controlled section of the road. Software and hardware, in particular, provide the calculation of the distance from the camera to the vehicle on the video frame, in relation to which recognition is performed. This distance is determined taking into account the previously obtained calibration parameters (focal length of the video camera, size of the video camera matrix) for the video frame (image of the filter in the frame, the size of the filter in pixels per frame, the actual size of the filter plate according to GOST) calculates the distance from the device to the vehicle.

The computer has a memory module in which primary information from video cameras and the results of its processing are collected and stored. The memory module also contains data on the maximum permissible speed of vehicles in a controlled area and other parameters necessary for identifying and fixing violations of the high-speed mode of vehicles.

The synchronization unit, which is part of the computer, is a device based on a microcontroller, which is responsible for synchronizing the operation of video cameras with a computer. Upon receipt of a command to “start synchronization”, the synchronization unit provides a sync pulse to the cameras for synchronous start-up, and at the same time sends an exact start time stamp to the computer. Thus, the first frame of each video camera is linked to the timeline.

In addition, the synchronization unit provides the ability to receive the input signals of the receiver of the global navigation system, which is also equipped with the claimed device. In this case, the indicated block also performs the function of synchronizing the internal time of the system with global time by satellite.

In the claimed device, the signal receiver of the global navigation system is a smart antenna that receives signals from the satellites of the Global Navigation Satellite System for time synchronization, and provides the exact time values, as well as the exact second pulse (PPS - pulse per second).

In the claimed device, both analog (with external synchronization) and digital (such as GigE, with a built-in frame counter) cameras can be used. The external synchronization input allows you to synchronize several cameras of the same type using a single clock signal (one synchronization unit). Thus, analog video cameras on the external synchronization signal begin to form video frames at a time. And since the inter-frame interval has a stable frequency, the computer simply counts the incoming frames from each camera, and thanks to the exact inter-frame interval, it ensures that each frame is precisely linked to a single time scale.

For GigE type digital cameras, the built-in counter independently writes the frame number to the metadata of each frame. In this case, you also need to synchronize the cameras from the outside (to start the formation of frames by an external signal) using the synchronization unit.

Video camera 1 is telephoto, designed for photo-video recording of vehicles at a distance of 100-150 m from the installation point of the device.

Video camera 2 is short-focus, it fixes the vehicle at a distance of 20-50 m from the installation point of the device.

The following is a description of the operation of the claimed device.

First, the device is pre-calibrated on a calibration bench. During the calibration process, such camera parameters as the focal length, physical dimensions of the matrices (width, height) are determined. Inside the device, the video cameras are installed so that when installing the device on the side of the road at a height of 1.0-1.5 m, on a straight section, vehicles traveling on the road at a distance of 100-150 m fall into the frame of video camera 1, and the video frame 2 hit vehicles traveling on the road at a distance of 20-50 meters from the device (see Fig. 2).

Before starting work, the device is installed on the side of the road along a straight section of the road.

Set the exact time. For these purposes, use the receiver of the global navigation system, which receives signals from the satellite and generates the value of the exact time. This data is transmitted to the computer and the synchronization unit. When starting the software on a computer, a command is sent to the synchronization unit to start synchronizing the cameras. Upon receipt of a start command, the synchronization unit provides a sync pulse to the cameras for synchronous start, and at the same time sends the exact start time stamp to the computer.

Each vehicle traveling along a given section of the road first crosses first the far border of the monitored section — the camera control zone 1 (100-150 m from the device), then, as it approaches, it crosses the near border of the monitored section — camera 2 monitoring zone (for 20-50 m from the device).

In each monitoring zone, during the movement of the vehicle, each video camera forms several frames with the image of the vehicle (the number of frames varies depending on the speed of the vehicle - the faster, the fewer frames). For each frame, the time of its formation is saved, and also if there is a burst image in the frame, the burst symbol is recognized and the distance from the device installation point to the vehicle is calculated.

After the vehicle leaves the control zone of video camera 2, the system analyzes all frames and calculates the average vehicle speed on the monitored section of the road, including the control zones of both cameras, as well as the road section between the control zones of the cameras.

In the case of fixing a vehicle with the same GRD with two different cameras, the software analyzes the distance traveled by the vehicle between two photo-video fixations and calculates the average speed of the vehicle as the ratio of the distance traveled by it to the time spent on it.

Each video camera makes photo-video recording of all passing vehicles. For each vehicle, the following information is stored in the computer memory module:

- photo of the vehicle,

- identifier of the control line (video camera),

- recognized grez,

- date and time of fixation.

This information is stored in the memory module and is further processed on the computer. Using special software and hardware tools, violations of the high-speed mode of vehicles in a controlled area are detected and recorded.

In cases of exceeding the permissible vehicle speed, the computer generates a package of evidence:

- two photos of the vehicle recorded at adjacent borders (the boundaries of the controlled area),

- recognized Grez TS,

- date and time of fixation at each line,

- information on the location of the lines and on the distance between the lines, as well as on the limitation of the average speed on this section of the road,

- measured (actual) average speed on a given section of the road.

Claims (4)

1. A device for automated control of the high-speed mode of vehicles, which includes two video cameras, a computer and a global navigation system receiver, characterized in that the video cameras are located at the same control line inside a single building, while the first video camera is installed with the possibility of photo and video recording of vehicles at the far border controlled area, and the second video camera is installed with the possibility of photo and video recording of vehicles on the near border of controlled A computer, a computer includes a synchronization unit, a memory module, and software and hardware that enable the identification of vehicles crossing the boundaries of the controlled area by recognizing their load, calculating the distance from the cameras to the identified vehicles, calculating the average speed of vehicles in the controlled area and fixing violations . 2. The device according to p. 1, characterized in that it includes at least one overview video camera. 3. The device according to claim 1, characterized in that at least one video camera is telephoto. 4. The device according to claim 1, characterized in that at least one video camera is short-focus.

Images