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Traffic light control method, device and system

A technology of a control device and a control method, applied in the field of communication, can solve problems such as inability to flexibly control traffic, and achieve the effect of improving efficiency and effect

Active Publication Date: 2012-01-04
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a traffic light control method, device, and system, which solve the problem that traffic cannot be flexibly controlled according to road conditions caused by the existing scheme of fixedly allocating the state duration of traffic lights

Method used

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  • Traffic light control method, device and system
  • Traffic light control method, device and system
  • Traffic light control method, device and system

Examples

Experimental program
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Embodiment 1

[0075] Assuming that each information collection node at the intersection uses an omnidirectional antenna, and the stable communication distance (defined as the communication radius) with the vehicle communication terminal is R, the information collection node can be installed at a distance R away from the intersection on the right side of the motor vehicle driving towards the intersection, such as image 3 As shown, in this way, the vehicle information of the motor vehicle lane in this direction within 2R from the intersection can be collected, and the information collection node transmits the vehicle passing information to the traffic light control device.

[0076] Take the intersection containing straight and left control information as an example, such as Figure 4 As shown, the specific implementation steps are as follows:

[0077] Step S401, on a certain road leading to the intersection, under the forbidden state, the intersection information collection node located on t...

Embodiment 2

[0092] In this embodiment, a system application scenario including a control management center is given. In this application scenario, the priority is set for each vehicle separately. The priority of ordinary vehicles is set to 1, and the priority of ambulances, fire trucks, police cars, or some vehicles whose temporary applications for emergencies are approved is set to 2. When there are priority When a high-level vehicle passes, if the information collection node at the current intersection recognizes the vehicle identification information of the vehicle, it will communicate with the traffic light control device, immediately switch the indicator light of the current direction to green, and the control management center The transmitted direction information of the vehicle judges the intersection it will pass next, and sets the next intersection as a green light in advance to guide the vehicles in front of it to pass, and improve the traffic efficiency of vehicles with high pri...

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PUM

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Abstract

The embodiment of the invention discloses a traffic light control method, a traffic light control device and a traffic light control system. By adopting the technical scheme of the embodiment of the invention, a communication terminal arranged on a vehicle broadcasts a vehicle identifier of the vehicle; an information acquisition node reports the vehicle identifier to the traffic light control device after receiving the vehicle identifier; and the traffic light control device determines the state information of the vehicle according to change information of the information acquisition node corresponding to vehicle identification information, and adjusts the state of a traffic light after the vehicle state of a current road is in accordance with a traffic light state switching condition. Therefore, the state of the traffic light can be adjusted according to the actual condition of the road, and the efficiency and the effect of traffic control can be effectively improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a traffic light control method, device and system. Background technique [0002] Traffic lights usually refer to signal lights that are composed of red, yellow and green lights to direct traffic. When the green light is on, vehicles are allowed to pass, when the yellow light is on, vehicles that have crossed the stop line can continue to pass; when the red light is on, vehicles are prohibited from passing. [0003] Of course, there are also traffic lights that do not include yellow signal lights, and directly use red to express prohibition of passage, and green to express permission to pass. [0004] In the current traffic control system, the time of traffic lights is usually set to a fixed value, and the priority of vehicle traffic is not set. [0005] During the process of implementing the embodiments of the present invention, the applicant found that the prior...

Claims

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Application Information

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IPC IPC(8): G08G1/07G08G1/08
CPCG08G1/07G08G1/08
Inventor 李朦马卫国
Owner CHINA ACAD OF TELECOMM TECH
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