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Predictable traffic signal controller, device and method

A technology of traffic signal and prediction device, applied in the field of intelligent transportation, can solve the problems of large maintenance, high cost and inconvenience

Active Publication Date: 2018-04-10
赵瑞锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of "real-time interconnection" is difficult to make accurate judgments on the fixed-period control signals that are not directly connected to the Internet, and the cost is high, the maintenance is large, and it is inconvenient to use when the communication quality is poor.

Method used

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  • Predictable traffic signal controller, device and method
  • Predictable traffic signal controller, device and method
  • Predictable traffic signal controller, device and method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] Example 1: The green light time is regarded as a high level, the yellow light after the green light is regarded as a slightly low level, and the full red time, that is, the clearing time is regarded as a 0 level, according to the phase operation sequence of the traffic lights, the phases of each phase are regarded as The working "waveform" diagram of the traffic signal is formed on the graph. For a certain fixed waveform graph, if a certain characteristic point output by the controller corresponds to a certain moment in the system time, its The graph is a function graph, which is called the phase transfer function graph in this paper. Refer to image 3 "Phase transfer function plot of predictable traffic signal controller output". "i-th phase" in the figure may refer to any phase.

example 2

[0056] Example 2: If the passing green light and the subsequent yellow light signal are both regarded as high level and expressed on the vertical axis, the full red time between signal transitions, that is, the clearing time is regarded as low level, and the horizontal axis is the time axis. Represents the system time, which can be set at zero or other times of the day as the starting point, see another predictable traffic signal controller output phase transfer function such as Figure 4 , the full red time AR in the figure 1 、AR 2 ... AR i Equal to greater than 0, "i-th phase" can refer to any phase.

[0057] Such a graph of a function is the function relation y i =f i (t) graphical expression, because the function diagram is intuitive and clear, the present invention only uses it to analyze and calculate.

[0058] According to the basic law of traffic signal conversion, for any traffic signal state at any time, if it is not a green light or a yellow light, it is a red ...

Embodiment 1

[0081] The embodiment of the present invention provides a predictable traffic signal controller, which can operate according to a certain operating law and can be judged by other devices according to the operating law information related to the controller and its reference time information. Controlled traffic light status information. For specific instructions on operating rules, see 010 "Derivation of Operating Rules" above, and for reference time information, see 007 "Reference Time". The relationship between a certain state of the traffic signal control signal controlled by this controller and time is a certain functional relationship, figure 1 It is a schematic structural diagram of the predictable traffic signal controller disclosed in the embodiment of the present invention. Refer to the "predictable traffic signal controller" part in the dotted line box, including the main control unit, storage unit, time unit, and operation adjustment unit. The following is given Expl...

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Abstract

The invention relates to a predictable traffic signal controller, a device and a method, and belongs to the technical field of intelligent traffic. According to the invention, the state information ofa traffic signal lamp of a required phase is calculated and judged according to the running rule of a traffic signal controller and the synchronous time information of the traffic signal controller.When the related operation rule information is not changed for a long period of time, such as a most-common multi-period fixed period control mode is not changed for the long period of time, the stateinformation of the corresponding traffic signal lamp can be calculated and judged without the real-time interconnection. When the real-time interconnection is needed, data such as the corresponding operation rule information can be sent in advance. Therefore, the requirement for the real-time performance of interconnection can be reduced. The real-time interconnection part can be reduced under many situations, so that the reliability can be improved. The material cost and the maintenance cost of a traffic signal control machine taking the traffic signal controller as a core can also be reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a predictable traffic signal controller, device and method. Background technique [0002] The traffic signal controller is a device for controlling traffic lights and is the main part of the traffic signal controller. The signal lights controlled by traffic signal controllers that are widely used at present are often not "readable" by machinery and equipment. If they can "read" the signal lights, passers-by can conveniently choose intersections and adjust speeds with the help of electronic maps, which can be used for driving. Appropriately speed up the green light in front, and you can also drive at the most economical and comfortable speed, which can reduce the parking and braking behavior of the vehicle, improve the convenience and comfort of driving, and improve the energy utilization of vehicles and the efficiency of road traffic. [0003] At present, th...

Claims

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Application Information

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IPC IPC(8): G08G1/083
CPCG08G1/083
Inventor 赵瑞锋白凤仙
Owner 赵瑞锋
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