Method and system for detecting moving vehicle speed through athird generation photo radar

• US 10,451,727 B2
• Filed: 05/13/2012
• Issued: 10/22/2019
• Est. Priority Date: 05/13/2011
• Status: Active Grant

• Current Assignee: Amirahmad Sepehri, Amirhossein Rezaei, Amir Shahmirzaei, Saeed Shamaghdari, Seyed Mehdi Hashemi Tashakori
• Original Assignee: Amirahmad Sepehri, Amirhossein Rezaei, Amir Shahmirzaei, Saeed Shamaghdari, Seyed Mehdi Hashemi Tashakori
• Inventors: Sepehri, Amirahmad, Rezaei, Amirhossein, Shahmirzaei, Amir, Shamaghdari, Saeed, Hashemi Tashakori, Seyed Mehdi
• Primary Examiner(s): Gregory, Bernarr E
• Application Number:
  US13/470,329
• Publication Number:
  US 20120286988A1
• Time in Patent Office: 2,718 Days
• Field of Search: 342 52- 58, 342 60, 342 61, 342 66, 342104-115, 342118, 342146, 342147, 342175, 342195, 342 59, 342 70, 701 1, 701117, 701118, 701119, 340933-943, 348 61, 348143, 348148, 348149, 386200, 386201, 386205, 386224-229, 702127, 702142, 702143
• CPC Class Codes: G01S 13/589 measuring the velocity vector
• CPC Class Codes: G01S 13/91 for traffic control G01S13/93 takes precedence
• CPC Class Codes: G01S 13/92 for velocity measurement
• CPC Class Codes: G08G 1/054 photographing overspeeding vehicles

Abstract

The various embodiments herein provide a moving vehicle speed detection system for recording the speed violation. The system comprises third generation photo radar for determining an accurate speed of the moving vehicles by measuring a speed and also by measuring the speed with the help of an image processor. The speed of one or more vehicles moving in different lanes within the detection range of the system is accurately measured. The system has a traffic counter system and it can determine an average speed with a very high precision. Generally this system provides the operator with various directorial data and graphs which facilitates an intelligent management of traffic speed control. Also it can determine the accurate speed of any number of vehicles within the range of the system by a third generation photo radar system.

Claims

1. A speed detection system for recording a speed violation of moving vehicles, the system comprising:

a photo radar system for measuring a speed and a direction of each vehicle amongst a plurality of moving vehicles;

a digital camera for capturing at least one image of each vehicle amongst the plurality of moving vehicles;

a central controller system for determining an accurate speed of each of the plurality of moving vehicles;

a traffic counter system for measuring an average speed of the plurality of moving vehicles;

an external memory for storing the captured image, the determined speed along with a time stamp, the direction of each of the plurality of moving vehicles and information corresponding to speed limit violations performed by each of the vehicles, amongst the plurality of vehicles;

a battery for providing an electrical power supply; and

at least one cooling fan for dissipating a heat;

wherein the central controller system is configured to manage vehicle speed based on the captured image and the direction of each of the plurality of moving vehicles, and wherein the central controller system is configured to determine the accurate speed of each vehicle amongst the plurality of moving vehicles, when the plurality of moving vehicle(s) are within a range of the photo radar system.

2. The system according to claim 1, wherein the photo radar system further comprises:

a transmitter for generating electromagnetic waves;

a radar antenna for beaming the generated electromagnetic waves towards the plurality of moving vehicles and receiving the electromagnetic waves reflected from each of the plurality of moving vehicles;

a transmit switch for instructing the radar antenna with a transmit time for transmitting the generated electromagnetic waves;

a receive switch for instructing the radar antenna with a receive time for receiving the reflected electromagnetic wave; and

a receiver for receiving the electromagnetic waves reflected from each of the plurality of moving vehicles, said receiver configured to amplify the received reflected electromagnetic wave;

wherein the photo radar system determines the speed and the direction of each of the plurality of moving vehicles by calculating a difference between the frequency of the generated electromagnetic wave and the frequency of the respective reflected electromagnetic wave.

3. The system according to claim 1, wherein the central controller system for determining the accurate speed of each of the plurality of moving vehicles comprises:

a detection system for determining the number of vehicles captured in the image;

an internal memory for storing the captured images, the determined speed corresponding to each of the vehicles along with the corresponding time stamp, direction of each of the plurality of moving vehicles and information corresponding to speed violations performed by each of the plurality of moving vehicles, at least temporarily; and

a Real Time Clock (RTC) for determining the date and the time stamp corresponding to the movement of each of the plurality of vehicles.

4. The system according to claim 1, wherein the digital camera captures an image of each of the plurality of moving vehicles after receiving an image capture command from the central controller system, and wherein the digital camera offers high resolution images, zoom lens, an option for setting the speed of shooting and an option of sequential shooting.

5. The system according to claim 1, wherein a general purpose alternating current (AC) electric power supply is provided for supplying a required electrical power, to the system.

6. The system according to claim 1 further comprises at least one temperature sensor for detecting a system temperature, and wherein said temperature sensor activates the atleast one cooling fan in case the detected system temperature crosses a threshold value, and wherein the threshold value for the system temperature is pre-configured.

7. The system according to claim 1, wherein the traffic counter system records the speed of each of the plurality of the moving vehicles, a time stamp corresponding to each of the plurality of moving vehicles and stores the recorded speed of each of the plurality of moving vehicles, in an external memory.

8. The system according to claim 1, wherein the determined speed and the direction of each of the plurality of moving vehicles are assigned to the respective moving vehicles by calculating a translation of a speed and direction of each of the plurality of moving vehicles in the captured image.

9. The system according to claim 1, wherein the captured images from the digital camera are stored in a Universal Serial Bus (USB) hard drive through the central controller system, and wherein the USB hard drive is removed when a memory in the hard drive is full and wherein stored images are sent to a main control center for reviews and processing.

10. The system according to claim 1, wherein the traffic counter system calculates an average speed of the plurality of the moving vehicles daily, weekly, monthly and annually and stores the calculated average speed of the plurality of the moving vehicles in an external memory.

11. A speed detection method for recording speed violations of moving vehicles, the method comprising the steps of:

beaming an electromagnetic wave towards a plurality of moving vehicles;

determining the speed and direction of each of the plurality of moving vehicles;

transmitting the information corresponding to the determined speed and the direction of each of the plurality of moving vehicles, to a central controller system;

comparing the determined speed and the direction of each of the plurality of moving vehicles with a preset speed limit and predefined direction;

sending an image capture command to a digital camera in case the determined speed exceeds the pre-set speed limit and the direction is not the same as the intended direction;

capturing images of the moving vehicles whose determined speed is in excess of the predefined speed limit and the direction is other than the predefined direction; and

assigning the determined speed and direction to respective vehicles by calculating the speed and direction of said moving vehicles.

12. The method according to claim 11, wherein the step of determining the speed and direction of each of the moving vehicles comprises the steps of:

generating an electromagnetic wave;

transmitting the generated electromagnetic wave towards the plurality of moving vehicles;

receiving a reflected electromagnetic wave from each of the plurality of moving vehicles;

amplifying the reflected electromagnetic waves;

identifying a change in the frequency of the reflected electromagnetic waves; and

calculating a difference between the frequency of the generated electromagnetic waves and the frequency of the reflected electromagnetic waves, thereby determining the speed and direction of travel of each of the plurality of moving vehicles.