TRAFFIC MONITORING SYSTEM AND TRAFFIC MONITORING METHOD

• US 20150254976A1
• Filed: 12/04/2014
• Published: 09/10/2015
• Est. Priority Date: 03/06/2014
• Status: Active Grant

• Current Assignee: Foxconn Interconnect Technology Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: WU, WEI-FENG
• Granted Patent: US 9,564,047 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G08G 1/0116 from roadside infrastructure, e.g. beacons
• CPC Class Codes: G08G 1/0125 Traffic data processing
• CPC Class Codes: G08G 1/0133 for classifying traffic situation
• CPC Class Codes: G08G 1/0141 for traffic information dissemination
• CPC Class Codes: G08G 1/017 identifying vehicles G08G1/015, G08G1/054 take precedence
• CPC Class Codes: G08G 1/04 using optical or ultrasonic detectors

Abstract

A traffic monitoring system includes a plurality of road monitoring devices and a traffic control center electronically coupled to the road monitoring devices. Each road monitoring device has specific transmittable position information stored therein. The traffic control center has stored transmittable images of a plurality of vehicle types and stored transmittable images of the plurality of roads to be monitored. When one or more vehicles passes one of the road monitoring devices, the road monitoring device receives a vehicle identification code from each vehicle, calculates position information of each vehicle and transmits the road monitoring device position information, each vehicle identification code and the vehicle position information for each vehicle to the traffic control center. The traffic control center configures a three dimensional traffic image from all of the vehicle images of the one or more vehicles passing the one of the road monitoring devices.

Claims

1. A traffic monitoring system for monitoring traffic on a plurality of roads, comprising:

one or more road monitoring devices, each road monitoring device positioned along a road and each road monitoring device having specific transmittable position information stored therein; and

a traffic control center electronically coupled to the one or more road monitoring devices, the traffic control center having stored transmittable images of a plurality of vehicle types and stored transmittable images of the plurality of roads to be monitored;

wherein, when one or more vehicles passes one of the plurality of road monitoring devices, the road monitoring device receives a vehicle identification code from each vehicle identifying the specific vehicle, the vehicle identification code being transmitted from a vehicle terminal device mounted in each vehicle;

wherein, when the road monitoring device receives each specific vehicle identification code, the road monitoring device calculates position information of each vehicle and transmits the road monitoring device position information, each vehicle identification code and the calculated vehicle position information for each vehicle to the traffic control center;

wherein, the traffic control center configures a three dimensional vehicle image of each vehicle and each vehicle position based on the stored vehicle types and the stored images of the monitored roads; and

wherein, the traffic control center configures a three dimensional traffic image from all of the vehicle images of the one or more vehicles passing the one of the plurality of road monitoring devices.

2. The traffic monitoring system as claimed in claim 1, wherein the traffic control center is capable of transmitting a signal of the three dimensional traffic image to the vehicle terminal device.

3. The traffic monitoring system as claimed in claim 1, wherein,

the vehicle terminal device comprises a vehicle central processing unit (CPU) module, and a vehicle infrared signal transmitting module, a vehicle storage module, a vehicle global position system (GPS) module electrically connected to the vehicle CPU module;

the vehicle GPS module is configured to acquire a GPS time synchronize with the road monitoring device.

4. The traffic monitoring system as claimed in claim 3, wherein,

the vehicle terminal device further comprises a vehicle infrared signal transmitting module and a vehicle display module electrically connected to the vehicle CPU module;

the vehicle storage module is configured to store the vehicle identification code, the three dimensional images of all styles of vehicle and roads.

5. The traffic monitoring system as claimed in claim 4, wherein the vehicle storage module is selected from a hard disk, a flash memory, and a memory card.

6. The traffic monitoring system as claimed in claim 1, wherein,

the road monitoring device comprises a CPU module, and a infrared signal transmitting module, a infrared signal receiving module, a storage module, and a GPS module electrically connected to the CPU module;

the position information is stored in the storage module;

the GPS module is configured to acquire a GPS time.

7. The traffic monitoring system as claimed in claim 6, wherein the storage module is selected from a hard disk, a flash memory, and a memory card.

8. The traffic monitoring system as claimed in claim 6, wherein,

the infrared signal receiving module comprises a receiving chip and a receiving hole opposite to the receiving chip;

the receiving hole is arrange coaxially with a central axis of the receiving chip;

the receiving chip is configured to receive signal transmitted from the vehicle infrared signal transmit module via the receiving hole.

9. The traffic monitoring system as claimed in claim 1, wherein,

the traffic control center comprises a CPU, and a storage device and a display device electrically connected to the CPU;

the plurality of three dimensional images of all styles of vehicles and roads are stored in the storage device.

10. The traffic monitoring system as claimed in claim 9, wherein the storage device is selected from a hard disk, a flash memory, and a memory card.

11. A traffic monitoring method comprising:

receiving a vehicle identification code transmitted from a vehicle terminal device mounted on a vehicle and calculating a vehicle position information by a road monitoring device;

transmitting the vehicle position information, the vehicle identification code, and the position information of the road monitoring device to a traffic control center by the road monitoring device;

configuring a three dimensional vehicle image of each vehicle and each vehicle position based on the stored vehicle types and the stored images of the monitored roads by the traffic control center; and

configuring a three dimensional traffic image from all of the vehicle images of the one or more vehicles passing the one of the plurality of road monitoring devices.

12. The traffic monitoring method as claimed in claim 11, further comprising transmitting a signal of the configured three dimensional traffic image to each vehicle by the traffic control center.

13. The traffic monitoring method as claimed in claim 11, wherein,

the vehicle terminal device comprises a vehicle CPU module, and a vehicle infrared signal transmitting module, a vehicle storage module, a vehicle GPS module electrically connected to the vehicle CPU module;

the vehicle GPS module is configured to acquire a GPS time synchronize with the road monitoring device.

14. The traffic monitoring method as claimed in claim 13, wherein,

the vehicle terminal device further comprises a vehicle infrared signal transmitting module and a vehicle display module electrically connected to the vehicle CPU module;

the vehicle storage module is configured to store the vehicle identification code, the three dimensional images of all styles of vehicle and roads.

15. The traffic monitoring method as claimed in claim 11, wherein,

the road monitoring device comprises a CPU module, and a infrared signal transmitting module, a infrared signal receiving module, a storage module, and a GPS module electrically connected to the CPU module;

the position information is stored in the storage module;

the GPS module is configured to acquire a GPS time.

16. The traffic monitoring method as claimed in claim 11, wherein,

the infrared signal receiving module comprises a receiving chip and a receiving hole opposite to the receiving chip;

the receiving hole is arrange coaxially with a central axis of the receiving chip;

the receiving chip is configured to receive signal transmitted from the vehicle infrared signal transmit module via the receiving hole.

17. The traffic monitoring method as claimed in claim 16, wherein,

in positioning an angle θ

between the vehicle and the road monitoring device,

the signal transmitted by the vehicle terminal device passes through the receiving hole, and then reaches to the receiving chip at a receiving point;

a first distance of L1 between the receiving point and the central axis is calculated, and a second distance of L2 between the receiving chip and the receiving hole is calculated;

the angle θ

is calculated by θ

=arctan(L1/L2).

18. The traffic monitoring method as claimed in claim 16, wherein a distance between the vehicle and the road monitoring device is calculated by measuring a differential time between a signal transmitting time when the vehicle transmits signal to the road monitoring device and a signal receiving time when the road monitoring device receives the signal transmitted by the vehicle.

19. The traffic monitoring method as claimed in claim 11, wherein,

the traffic control center comprises a CPU, and a storage device and a display device electrically connected to the CPU;

the plurality of three dimensional images of all styles of vehicles and roads are stored in the storage device.