CN111127913A - Intelligent traffic network system signal guiding method and device - Google Patents
Intelligent traffic network system signal guiding method and device Download PDFInfo
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- CN111127913A CN111127913A CN201911287520.4A CN201911287520A CN111127913A CN 111127913 A CN111127913 A CN 111127913A CN 201911287520 A CN201911287520 A CN 201911287520A CN 111127913 A CN111127913 A CN 111127913A
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- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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Abstract
The invention relates to a signal guiding method and a signal guiding device of an intelligent traffic network system.A crossroad is provided with intelligent traffic signal lamps, each incoming road of the crossroad is provided with at least two infrared sensors, and the sensors are in communication connection with the intelligent traffic signal lamps; detecting vehicles and the speed of the vehicles at the intersection by using the infrared sensor; according to the number of the coming vehicles and the speed of the coming vehicles, the intelligent traffic signal lamp selects different control modes to control the coming road signal lamp to be turned off. Through the technical scheme of this application, when the current quantity of vehicle is rare on the road, intelligent transportation signal lamp can select putting out of different control mode adjustment signal lamps according to the actual conditions of road vehicle flow, guides the vehicle current, is guaranteeing under the current safe prerequisite of vehicle, improves the current experience of car owner.
Description
Technical Field
The invention relates to the technical field of intelligent traffic in smart cities, in particular to a signal guidance method and device for a smart traffic network system.
Background
In the conventional traffic signal lamp control system and method, signal lamps of each intersection operate independently, the on-off of the signal lamps is not controlled in real time according to the traffic flow of vehicles on the current road, when the traffic quantity of the vehicles on the road is small, each signal lamp still turns on or off according to a preset mode, and the waiting time of a vehicle owner can be greatly wasted. However, in actual operation, the traffic flow of the main road is not much larger than that of the secondary road all the day, and if the traffic lights are still turned on or off according to the predetermined mode, the waiting time of the vehicle owners on the secondary road is greatly wasted.
Therefore, under the popularization of smart traffic in smart cities, an intelligent signal guiding method is needed to guide vehicles to pass, and the passing experience of vehicle owners is improved on the premise of ensuring the passing safety of the vehicles.
Disclosure of Invention
The invention provides a method and a device for intelligent traffic network system signal guidance, aiming at the technical problems in the prior art.
The technical scheme for solving the technical problems is as follows:
in one aspect, the invention provides a signal guidance method for an intelligent traffic network system, which comprises the following steps:
arranging intelligent traffic signal lamps at crossroads, arranging at least two infrared sensors on each incoming road of the crossroads, wherein the sensors are in communication connection with the intelligent traffic signal lamps;
detecting vehicles and the speed of the vehicles at the intersection by using the infrared sensor;
according to the number of the coming vehicles and the speed of the coming vehicles, the intelligent traffic signal lamp selects different control modes to control the coming road signal lamp to be turned off.
Further, the distances from the two infrared sensors to the crossroad are respectively 50 meters and 100 meters.
Further, the method for detecting the vehicle and the speed thereof at the intersection by using the infrared sensor comprises the following steps:
the intelligent traffic signal lamp respectively acquires vehicle signals detected by the two infrared sensors, and the vehicle passing speed is calculated according to the vehicle signal acquisition time difference and the spacing distance between the two infrared sensors.
Further, the intelligent traffic signal lamp controls the coming road signal lamp to be turned off according to the number of the coming vehicles and the speed of the coming vehicles, and the intelligent traffic signal lamp comprises the following steps:
s1, if a sensor on one coming road detects that the coming vehicle is coming, and two coming roads adjacent to the coming road do not detect that the coming vehicle is coming, the method jumps to the step S2, otherwise, the method exits from the intelligent control mode, and the intelligent traffic signal lamp is turned off according to the preset mode;
s2, judging whether the vehicle speed per hour is greater than a preset speed threshold, if so, jumping to the step S3, otherwise, jumping to the step S4;
s3, controlling the coming road signal lamp to be lighted in red, and setting a first countdown time length; after the second reading is finished, the signal lamp returns to the preset mode;
s4, controlling the coming road signal lamp to light in red, and setting a second countdown duration; and after the second reading is finished, the signal lamp returns to the preset mode.
Further, the first countdown duration is greater than the second countdown duration.
In another aspect, the present invention provides a signal directing apparatus for an intelligent traffic network system, comprising
At least two infrared sensors disposed on respective oncoming roads of the intersection for detecting passing vehicles,
intelligent traffic signal lamp arranged at crossroad and in communication connection with infrared sensor
The intelligent signal lamp comprises a vehicle speed calculation module and a signal lamp control module;
the vehicle speed calculating module is used for calculating the speed of the vehicle at the intersection according to the detection result of the infrared sensor;
and the signal lamp control module is used for selecting different control modes to control the coming road signal lamp to be turned off according to the number of the coming vehicles and the speed of the coming vehicles.
Further, the distances from the two infrared sensors to the crossroad are respectively 50 meters and 100 meters.
Further, the signal lamp control module includes:
the mode judging module is used for selecting a control mode according to the number of vehicles on the road from each intersection;
the vehicle speed judging module is used for judging whether the vehicle speed of the target vehicle exceeds a preset threshold value or not;
and the mode selection module is used for selecting a corresponding control mode to control the turn-off of the signal lamp according to the judgment result of the vehicle speed judgment module.
The invention has the beneficial effects that: when the number of vehicles passing on the road is small, the intelligent traffic signal lamp can select different control modes to adjust the turn-off of the signal lamp according to the actual condition of the traffic flow of the road to guide the vehicles to pass, and the passing experience of vehicle owners is improved on the premise of ensuring the passing safety of the vehicles.
Drawings
FIG. 1 is a flow chart of a method provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an apparatus according to an embodiment of the present invention; shown in the figure are 1 an intelligent traffic signal lamp and 2 an infrared sensor.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 and fig. 2, an intelligent traffic signal lamp 1 is arranged at a road intersection, and infrared sensors 2 are respectively arranged at positions 50 meters and 100 meters away from the road intersection and used for detecting vehicles coming from the road intersection and the speed of the vehicles, and the sensors are connected with the intelligent traffic signal.
Detecting vehicles and the speed of the vehicles at the intersection by using the infrared sensor; specifically, the vehicle passing speed is calculated according to the vehicle signal acquisition time difference and the separation distance of the two infrared sensors.
According to the number of the coming vehicles and the speed of the coming vehicles, the intelligent traffic signal lamp selects different control modes to control the coming road signal lamp to be turned off.
Specifically, the method comprises the following steps:
s1, if a sensor on one coming road detects that the coming vehicle is coming, and two coming roads adjacent to the coming road do not detect that the coming vehicle is coming, the method jumps to the step S2, otherwise, the method exits from the intelligent control mode, and the intelligent traffic signal lamp is turned off according to the preset mode;
s2, judging whether the vehicle speed per hour is greater than a preset speed threshold value, such as 30 KM/hour, if so, jumping to the step S3, otherwise, jumping to the step S4;
s3, controlling the coming road signal lamp to be lighted in red, and setting a first countdown time length; after the second reading is finished, the signal lamp returns to the preset mode;
s4, controlling the coming road signal lamp to light in red, and setting a second countdown duration; and after the second reading is finished, the signal lamp returns to the preset mode.
The first countdown duration is greater than the second countdown duration, e.g., the first countdown duration is 10 seconds and the second countdown duration is 5 seconds. By the arrangement, the passing vehicles can pass through the intersection without waiting, meanwhile, due to the arrangement of 10 seconds and 5 seconds, the passing speed of the vehicles can be reduced to be below 30 KM/hour, and even if pedestrians appear at the intersection suddenly, a driver has enough time to react, so that the driving safety of the road is ensured.
For example, when no incoming vehicles are detected on each incoming road of the intersection, the intelligent signal lamps are turned off at intervals according to a preset mode, for example, the duration of each traffic light is 25 seconds.
When a sensor on one incoming road detects that a vehicle is coming, and no vehicle is detected on any two incoming roads adjacent to the incoming road, the vehicle speed is calculated according to the time when the sensor detects the vehicle at 50 meters and 100 meters.
If the vehicle speed exceeds 30KM, no matter whether the current vehicle is a green light or a red light and the remaining time length is left, the vehicle is controlled to light a signal lamp of the coming road at the moment and the red light is set to be 10 seconds. If the speed per hour of the vehicle is lower than 30KM, the signal lamp red lamp of the coming road is controlled to be lightened and the set time length is 5 seconds. And after the red light is read for the second, the signal lamp lights the green light and turns off the red light.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A signal guidance method of an intelligent traffic network system is characterized by comprising the following steps:
arranging intelligent traffic signal lamps at crossroads, arranging at least two infrared sensors on each incoming road of the crossroads, wherein the sensors are in communication connection with the intelligent traffic signal lamps;
detecting vehicles and the speed of the vehicles at the intersection by using the infrared sensor;
according to the number of the coming vehicles and the speed of the coming vehicles, the intelligent traffic signal lamp selects different control modes to control the coming road signal lamp to be turned off.
2. The method of claim 1, wherein said positioning at least two infrared sensors on each incoming road at the intersection comprises:
the distances between the two infrared sensors and the crossroad are respectively 50 meters and 100 meters.
3. The method of claim 2, wherein said detecting the intersection to the vehicle and its speed using said infrared sensor comprises:
the intelligent traffic signal lamp respectively acquires vehicle signals detected by the two infrared sensors, and the vehicle passing speed is calculated according to the vehicle signal acquisition time difference and the spacing distance between the two infrared sensors.
4. The method according to claim 1, wherein the intelligent traffic signal lamp controls the turn-off of the coming traffic signal lamp according to the number of the coming vehicles and the speed thereof, comprising the steps of:
s1, if a sensor on one coming road detects that the coming vehicle is coming, and two coming roads adjacent to the coming road do not detect that the coming vehicle is coming, the method jumps to the step S2, otherwise, the method exits from the intelligent control mode, and the intelligent traffic signal lamp is turned off according to the preset mode;
s2, judging whether the vehicle speed per hour is greater than a preset speed threshold, if so, jumping to the step S3, otherwise, jumping to the step S4;
s3, controlling the coming road signal lamp to be lighted in red, and setting a first countdown time length; after the second reading is finished, the signal lamp returns to the preset mode;
s4, controlling the coming road signal lamp to light in red, and setting a second countdown duration; and after the second reading is finished, the signal lamp returns to the preset mode.
5. The method of claim 4, wherein the first countdown duration is greater than the second countdown duration.
6. A signal guiding device of intelligent traffic network system is characterized in that the device comprises
At least two infrared sensors disposed on respective oncoming roads of the intersection for detecting passing vehicles,
intelligent traffic signal lamp arranged at crossroad and in communication connection with infrared sensor
The intelligent signal lamp comprises a vehicle speed calculation module and a signal lamp control module;
the vehicle speed calculating module is used for calculating the speed of the vehicle at the intersection according to the detection result of the infrared sensor;
and the signal lamp control module is used for selecting different control modes to control the coming road signal lamp to be turned off according to the number of the coming vehicles and the speed of the coming vehicles.
7. The apparatus of claim 6, wherein the two infrared sensors are located at respective distances of 50 meters and 100 meters from the intersection.
8. The apparatus of claim 6, wherein the signal lamp control module comprises:
the mode judging module is used for selecting a control mode according to the number of vehicles on the road from each intersection;
the vehicle speed judging module is used for judging whether the vehicle speed of the target vehicle exceeds a preset threshold value or not;
and the mode selection module is used for selecting a corresponding control mode to control the turn-off of the signal lamp according to the judgment result of the vehicle speed judgment module.
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| CN201911287520.4A CN111127913A (en) | 2019-12-14 | 2019-12-14 | Intelligent traffic network system signal guiding method and device |
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| CN113470384A (en) * | 2021-06-01 | 2021-10-01 | 江汉大学 | Intelligent control method and device capable of improving traffic operation and related equipment |
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