WO2018177186A1 - 交通灯控制方法、装置、设备和计算机可读存储介质 - Google Patents
交通灯控制方法、装置、设备和计算机可读存储介质 Download PDFInfo
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- WO2018177186A1 WO2018177186A1 PCT/CN2018/079962 CN2018079962W WO2018177186A1 WO 2018177186 A1 WO2018177186 A1 WO 2018177186A1 CN 2018079962 W CN2018079962 W CN 2018079962W WO 2018177186 A1 WO2018177186 A1 WO 2018177186A1
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- G—PHYSICS
- 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
Definitions
- the present application relates to the field of traffic light technologies, and in particular, to a traffic light control method, apparatus, device, and computer readable storage medium.
- the traffic lights we use usually control the switching of red, green and yellow signal lights according to a preset fixed period.
- the traffic volume on each road where the intersections meet is different due to time, road direction, and the like.
- there are more traffic on the north-south road and it takes more time for the green light to be released.
- the vehicles on the east-west road are very few, and the green light can be used to complete the release of the vehicle. Switching the signal lights for a fixed period of time will cause the north-south road to become more congested, while the green light time in the east-west direction is wasted. It can be seen that the current traffic light control method is too rigid and may bring more adverse effects to the road conditions.
- the main purpose of the present application is to provide a traffic light control method, apparatus, device and computer readable storage medium, aiming at solving the technical problem that the control mode of the traffic light is relatively rigid.
- the present application provides a traffic light control method, and the traffic light control method includes the following steps:
- the traffic light corresponding to the road is switched to the release state, and the release state is maintained according to the release duration, and the traffic light state corresponding to the other roads is correspondingly controlled.
- the present application further provides a traffic light control device, where the traffic light control device includes:
- the collecting module is configured to: if the traffic light corresponding to the road is in a forbidden state, collect an image of the vehicle on the road when the remaining duration of the static passing state is reduced to a preset duration, where the road intersects other roads at the intersection ;
- a statistics module configured to count, according to the image, a quantity of vehicles to be released on the road
- a duration module configured to calculate, according to the number of vehicles to be released, a release time required for the vehicle to be released to pass through the intersection
- control module configured to switch the traffic light corresponding to the road to a release state when the remaining duration of the forbidden traffic state is reduced to zero, and maintain the release state according to the release duration, and correspondingly control traffic corresponding to other roads Light status.
- the present application further provides a traffic light control device including a memory, a processor, and a traffic light control program stored on the memory and operable on the processor
- a traffic light control program stored on the memory and operable on the processor
- the traffic light corresponding to the road is switched to the release state, and the release state is maintained according to the release duration, and the traffic light state corresponding to the other roads is correspondingly controlled.
- the present application further provides a computer readable storage medium, where the traffic light control program is stored, and when the traffic light control program is executed by the processor, the following steps are implemented:
- the traffic light corresponding to the road is switched to the release state, and the release state is maintained according to the release duration, and the traffic light state corresponding to the other roads is correspondingly controlled.
- a traffic light control method, device, device and computer readable storage medium if the traffic light corresponding to the road is in a forbidden state, when the remaining duration of the static traffic state is reduced to a preset duration, Collecting images of vehicles on the road, which intersects with other roads at the intersection to obtain real-time road conditions of the road; then, according to the collected images, the number of vehicles to be released on the road is counted; and then, according to the number of vehicles to be released, Calculate the release time required for the vehicle to be released through the intersection as the basis for regulating the traffic light; then, when the remaining duration of the prohibited traffic state is reduced to zero, the traffic light corresponding to the road is switched to the release state, and according to the vehicle to be released The release time required by the intersection is kept in the release state, so that all the vehicles to be released on the road are released, and at the same time, the traffic lights corresponding to other roads at the intersection are controlled to ensure the traffic order of the intersection.
- the present application realizes that the traffic lights are adjusted according to the real-time road conditions of the roads at the intersections, so that the regulation of the traffic lights is more flexible, and is no longer limited by a fixed regulation period, which can prolong the release time of the congested roads and shorten the release time of the unobstructed roads, effectively The road resources are released, making the intersection more smooth.
- FIG. 1 is a schematic flow chart of a first embodiment of a traffic light control method according to the present application.
- FIG. 2 is a schematic flow chart of a second embodiment of a traffic light control method according to the present application.
- FIG. 3 is a schematic flow chart of a third embodiment of a traffic light control method according to the present application.
- FIG. 4 is a schematic flow chart of a fourth embodiment of a traffic light control method according to the present application.
- FIG. 5 is a schematic diagram of functional modules of a first embodiment of a traffic light control device of the present application.
- FIG. 6 is a schematic diagram of functional modules of a second embodiment of a traffic light control device of the present application.
- FIG. 7 is a schematic structural diagram of a terminal device in a hardware operating environment according to an embodiment of the present invention.
- a first embodiment of a traffic light control method of the present application provides a traffic light control method, where the traffic light control method includes:
- Step S10 If the traffic light corresponding to the road is in the no-pass state, when the remaining duration of the stationary state is reduced to the preset duration, an image of the vehicle on the road is collected, and the road intersects other roads at the intersection.
- the present invention automatically calculates the length of the vehicle on the release road, thereby realizing the flexible control of the traffic light according to the obtained traffic light time of the automatic adjustment road, which can effectively reduce the road congestion and is more reasonable. Use of road resources.
- the traffic light control device needs to collect when the remaining duration of the road stationary state is reduced to a preset duration.
- a preset duration which may be 3 seconds, 2 seconds, etc. of the red light of the road, so that the number of vehicles waiting to be released on the road can be more accurately obtained.
- the traffic light control device can collect an image of the vehicle on the road near the intersection by an image capturing device such as a camera installed at the intersection.
- an image capturing device such as a camera installed at the intersection.
- vehicle images by means of an image acquisition device installed around the road.
- the acquired image is an image of a vehicle in a road length preset on the road.
- the traffic light control device collects only the vehicle image in the road preset road length, for example, the vehicle image within 1 km from the intersection.
- the preset pavement length can be flexibly configured according to the length of the road and the distance between the intersections. It should be noted that, when collecting an image of the vehicle, only the vehicle image in the one-way lane of the road on the intersection side may be collected, or the vehicle image in the two-way lane of the road on the intersection side may be collected; and the road may be collected. Vehicle images in the same single lane on both sides of the intersection can also collect vehicle images in the two-way lanes on both sides of the intersection.
- Step S20 Calculate the number of vehicles to be released on the road according to the image.
- the traffic light control device After acquiring the image of the vehicle, the traffic light control device counts the vehicle to be released on the road based on the obtained image.
- the traffic light control device identifies the vehicle in the image according to the acquired image, and identifies the vehicle with the vehicle license plate number, color, and the like. Then, all the vehicles in the image are taken as the vehicles to be released, the number of vehicles in the statistical image is counted, and the number of counted vehicles is taken as the number of vehicles to be released. Further, the number of vehicles to be released may also be counted according to the running state of the vehicle. For example, only a vehicle that is still waiting to be released is regarded as a vehicle to be released, and only the number of stationary waiting vehicles in the image is counted as the number of vehicles to be released.
- the to-be-released vehicle includes a stationary waiting vehicle and a mobile vehicle.
- the stationary waiting vehicle that is, the vehicle on the current road waiting to be released at the intersection
- the mobile vehicle is the vehicle that is in the running state on the current road and has not traveled to the waiting position. Then, when counting the number of vehicles to be released, it is necessary to count not only the number of stationary waiting vehicles in the image but also the number of flowing vehicles in the image.
- the number of stationary waiting vehicles is summed with the number of mobile vehicles, and the obtained quantity is the number of vehicles to be released.
- Step S30 Calculate, according to the number of vehicles to be released, a release time required for the vehicle to be released to pass through the intersection.
- the length of time required for the vehicle to be released to pass through the intersection is calculated.
- the number of vehicles passing through the intersection in a unit time is configured according to factors such as the length of the intersection, the number of lanes, and the like. Then, according to the current number of vehicles to be released, and the number of vehicles passing through the intersection per unit time, the release time required for all the vehicles to be released to pass through the intersection is calculated. For example, if the current vehicle to be released is a stationary vehicle in the image, the calculated release duration is the length of time required for all of the vehicles to be released to travel through the intersection from the current location. If the current to-be-released vehicle includes a stationary vehicle and a mobile vehicle in the image, the calculated release duration is the length of time required for the stationary vehicle and the mobile vehicle to all travel through the intersection.
- Step S40 When the remaining duration of the forbidden traffic state decreases to zero, the traffic light corresponding to the road is switched to the release state, and the release state is maintained according to the release duration, and the traffic light state corresponding to the other roads is controlled correspondingly. .
- the traffic light control device switches the traffic light corresponding to the road to the release state, for example, switches to a green light, To release the current vehicle on the road to be released.
- the length of time for controlling the release state is equal to the release time required for all the vehicles to be released calculated in step S30 to pass through the intersection, so as to ensure that all the vehicles to be released on the road can pass the intersection.
- the traffic light control device controls the traffic light status of other roads at the intersection to ensure the traffic order of the intersection. For example, the traffic lights of other roads are red, enter the no-pass state, and control the transit time of other roads. It is equal to the release time of the current road.
- the traffic light control device collects the pictures of the vehicles on the other roads in a preset order, and counts the vehicles to be released on the other roads according to the collected images. Quantity; then, according to the number of vehicles to be released, calculate the release time required for the vehicles to be released on other roads to pass through the intersection; when the traffic lights corresponding to other roads are not allowed to pass, the traffic lights corresponding to other roads are switched to the release state. And according to the calculated release time of the vehicle to be released through the intersection, the release state is maintained, corresponding to the state of the traffic light corresponding to each road of the control intersection.
- the traffic light corresponding to the road is in a forbidden state
- the remaining time of the stationary state is reduced to a preset duration
- an image of the vehicle on the road is collected, and the road intersects with other roads at the intersection
- Obtain real-time road conditions of the road then, according to the collected images, count the number of vehicles to be released on the road; then, according to the number of vehicles to be released, calculate the release time required for the vehicles to be released through the intersection, as the regulation of traffic lights
- the traffic light corresponding to the road is switched to the release state, and the release state is maintained according to the release time required for the vehicle to pass through the intersection to release the road.
- All vehicles are to be released, and at the same time, the traffic lights corresponding to other roads at the intersections are controlled to ensure the traffic order of the intersections.
- the embodiment realizes that the traffic light is adjusted according to the real-time road condition of each road at the intersection, so that the regulation of the traffic light is more flexible, and is no longer limited by a fixed regulation period, which can prolong the release time of the congested road and shorten the release time of the unobstructed road. Effectively release road resources, making the intersection more smooth.
- a second embodiment of the traffic light control method of the present application provides a traffic light control method.
- the traffic light control method further includes:
- Step S50 Count the number of vehicles to be released on each road intersecting the intersection, and calculate a congestion index of each road.
- the traffic light control device After identifying the number of vehicles to be released on the road based on the acquired images, the traffic light control device counts the number of vehicles to be released on each road intersecting the current intersection. After obtaining the number of vehicles to be released on each road, the congestion index of each road is calculated separately. According to the road section speed, road traffic density, traffic volume, road grade and travel time of each road, the congestion index of each road can be calculated comprehensively.
- Step S60 Determine, according to the congestion index of each road, whether the intersection is in a congestion state.
- the congestion index exceeds the preset threshold
- the proportion of the total number of roads intersecting the intersection exceeds a preset ratio, indicating that most of the intersections of the current intersections are relatively congested, and the intersection is determined.
- the proportion of the total number of roads intersecting the intersection is lower than the preset ratio, it means that most of the roads intersecting at the intersection are relatively smooth, only some of them are relatively congested, and the intersection is determined. Not in a state of congestion. If the road congestion index intersected by the current intersection is lower than the preset threshold, it indicates that the road intersecting at the current intersection is relatively smooth, and it is determined that the intersection is not in a congested state.
- the congestion index of the two roads intersecting at the intersection is high, exceeding the preset threshold and the road condition is poor, it is determined that the current intersection is in a congested state; if two intersections intersect at the intersection, the congestion index of one road is higher.
- Step S70 If the intersection is not in a congested state, the release order is obtained according to the congestion index of each road.
- the release order is obtained according to the congestion index of each road.
- the congestion index can be ranked from high to low, and the order of the corresponding roads is the release order, that is, the road with the highest congestion index is preferentially released, and the road with the lowest congestion index is finally released; or the congestion index can be used.
- the order of the corresponding roads is the release order, that is, the road with the lowest congestion index is preferentially released, and the road with the highest congestion index is finally released; of course, other sorting methods can be used according to actual needs. Flexible configuration.
- Step S80 Calculate, according to the number of vehicles to be released on the roads, the release time required for the vehicles to be released on the roads to pass through the intersection.
- intersection If the intersection is not in a congested state, it is necessary to separately calculate the release time required for the vehicle to be released on each road to pass through the intersection according to the number of vehicles to be released on each road.
- Step S90 sequentially, according to the release order, sequentially switching the traffic lights corresponding to the roads to a release state, and maintaining the release state according to the release time required for the vehicles to be released on the roads to pass through the intersections, corresponding to Control the status of traffic lights corresponding to other roads.
- the vehicles to be released on each road are sequentially released according to the release order.
- the release order the first road that is preferentially released is obtained, and the traffic light corresponding to the road is switched to the release state, and the duration of the release state is equal to the release time required for the vehicle to be released on the road through the intersection to ensure The vehicles to be released on this road all pass through the intersection.
- the second road is obtained, and the traffic light corresponding to the road is switched to the release state, and the duration of the release state is equal to the release time required for the vehicle to be released on the road through the intersection to protect the road. All vehicles to be released pass through the intersection.
- the release order the vehicle to be released on the last road has been released.
- the traffic light control device can re-acquire the images of the vehicles on the roads at the intersection, and count the number of vehicles to be released on each road; then, calculate the congestion index of each road to determine whether the intersection is in a congested state.
- the state of the traffic light is flexibly adjusted according to the road condition of the intersection.
- the congestion index of each road is calculated to obtain the road condition of each road; and then, according to each road
- the congestion index determines whether the current intersection is in a congested state, and is used to reasonably infer the road condition of the intersection according to the road condition of each road; if the intersection is not in a congested state, that is, the current intersection has a good road condition, according to the congestion index of each road, the congestion index is obtained.
- Release order for orderly release of vehicles to be released on each road then, according to the number of vehicles to be released on each road, calculate the length of time required for the vehicles to be released on each road to pass through the intersection; according to the release order, The traffic lights corresponding to the roads are switched to the release state, and the release state is maintained according to the release time required for the vehicles to be released on the roads to pass through the intersections, and the traffic light states corresponding to the other roads are correspondingly controlled.
- the road conditions of the roads intersected by the intersections are extended, the release time of the congested roads is prolonged, the release time of the unobstructed roads is shortened, and the state of the traffic lights of the control intersections is flexibly improved, thereby greatly improving the traffic efficiency of the intersections.
- a third embodiment of the traffic light control method of the present application provides a traffic light control method. Based on the embodiment shown in FIG. 2, after the step S60, the method further includes:
- Step S100 If the intersection is in a congested state, the traffic light state corresponding to each road is adjusted according to a preset period.
- the state of the traffic light corresponding to each road is adjusted according to a preset period, so that the roads at the intersection are made.
- the number of vehicles released is balanced, avoiding the state where some roads continue to be released and some roads are more congested.
- the preset period may be a fixed release duration and a stop duration, and the traffic light control device alternately releases the vehicles of each road according to a fixed period.
- the state of the traffic light corresponding to each road intersected by the intersection is controlled according to a preset period, so that the vehicles in the lanes are balanced.
- a fourth embodiment of the traffic light control method of the present application provides a traffic light control method based on the embodiment shown in FIG. 1, FIG. 2 or FIG. 3 (this embodiment takes FIG. 1 as an example).
- the traffic light control method further includes:
- Step S110 If the number of vehicles to be released on the road is zero, control the traffic light corresponding to the road to extend the forbidden traffic state, and correspondingly control the traffic light state corresponding to the other roads.
- the duration of the current road extension prohibition passage state may be a preset duration, or may be flexibly configured according to the release time required for the vehicles to be released on other roads.
- the number of vehicles to be released on the road is re-acquired and correspondingly processed.
- the traffic light corresponding to the control road is extended to prohibit the traffic state, and the traffic light state corresponding to the other roads is controlled to allocate the road resources to the vehicles to be released. Use more roads to increase the rate of vehicle release at intersections.
- a first embodiment of a traffic light control device of the present application provides a traffic light control device, where the traffic light control device includes:
- the collecting module 10 is configured to: if the traffic light corresponding to the road is in a forbidden state, collect an image of the vehicle on the road when the remaining duration of the static passing state is reduced to a preset duration, the road is at the intersection and other roads intersect.
- the collecting module 10 needs to collect the road when the remaining duration of the road stationary state is reduced to a preset duration.
- the image of the vehicle It should be noted that this road intersects with other roads to form an intersection.
- the remaining duration of the stationary state is reduced to a preset duration, which may be 3 seconds, 2 seconds, etc. of the red light of the road, so that the number of vehicles waiting to be released on the road can be more accurately obtained.
- the collecting module 10 can collect an image of the vehicle on the road near the intersection by using an image capturing device such as a camera installed at the intersection. Of course, it is also possible to collect vehicle images by means of an image acquisition device installed around the road.
- the acquisition module 10 may collect only the image of the stationary vehicle waiting to pass at the intersection, and may also acquire the image of the stationary vehicle and the image of the vehicle on the road, which may be flexibly set according to actual needs.
- the acquired image is an image of a vehicle in a road length preset on the road.
- the acquisition module 10 collects only vehicle images in the road preset road length, for example, vehicle images within 1 kilometer from the intersection.
- the preset pavement length can be flexibly configured according to the length of the road and the distance between the intersections. It should be noted that, when acquiring an image of the vehicle, the collecting module 10 may collect only the vehicle image in the one-way lane of the road on the side of the intersection, or collect the vehicle image in the two-way lane of the road on the side of the intersection; The acquisition module 10 can collect vehicle images in the same single lane on both sides of the intersection, and can also collect vehicle images in the two-way lanes on both sides of the intersection.
- the statistics module 20 is configured to count the number of vehicles to be released on the road according to the image.
- the statistics module 20 After acquiring the image of the vehicle, the statistics module 20 counts the vehicles to be released on the road based on the obtained image.
- the statistic module 20 identifies the vehicle in the image according to the collected image, and identifies the vehicle with the vehicle license plate number, color, and the like. Then, the statistic module 20 treats all the vehicles in the image as the vehicles to be released, counts the number of vehicles in the image, and counts the number of vehicles obtained as the number of vehicles to be released. Further, the statistics module 20 can also count the number of vehicles to be released according to the running state of the vehicle. For example, only a vehicle that is still waiting to be released is regarded as a vehicle to be released, and the statistics module 20 counts only the number of stationary waiting vehicles in the image as the number of vehicles to be released.
- the to-be-released vehicle includes a stationary waiting vehicle and a mobile vehicle.
- the stationary waiting vehicle that is, the vehicle on the current road waiting to be released at the intersection
- the mobile vehicle is the vehicle that is in the running state on the current road and has not traveled to the waiting position.
- the statistics module 20 not only needs to count the number of stationary waiting vehicles in the image, but also counts the number of mobile vehicles in the image.
- the statistics module 20 sums the number of stationary waiting vehicles with the number of mobile vehicles, and the resulting quantity is the number of vehicles to be released.
- the duration module 30 is configured to calculate a release duration required for the to-be-released vehicle to pass through the intersection according to the number of the vehicles to be released.
- the duration module 30 calculates the length of time required for the vehicle to be released through the intersection.
- the duration module 30 pre-configures the number of vehicles passing through the intersection in a unit time according to factors such as the length of the intersection, the number of lanes, and the like. Then, the duration module 30 calculates the release time required for all the vehicles to be released to pass through the intersection according to the number of vehicles to be released and the number of vehicles passing through the intersection per unit time. For example, if the current vehicle to be released is a stationary vehicle in the image, the calculated release duration is the length of time required for all of the vehicles to be released to travel through the intersection from the current location. If the current to-be-released vehicle includes a stationary vehicle and a mobile vehicle in the image, the calculated release duration is the length of time required for the stationary vehicle and the mobile vehicle to all travel through the intersection.
- the control module 40 is configured to switch the traffic light corresponding to the road to a release state when the remaining duration of the no-pass state is reduced to zero, and maintain the release state according to the release duration, and correspondingly control corresponding to the other roads. Traffic light status.
- the control module 40 switches the traffic light corresponding to the road to the release state, for example, switches to a green light for Release the current vehicles on the road to be released.
- the duration of the release state of the control module 40 is equal to the release duration required for the vehicles to be released calculated by the duration module 30 to pass through the intersection, so as to ensure that all the vehicles to be released on the road can pass through the intersection.
- control module 40 correspondingly controls the traffic light state of other roads at the intersection to ensure the traffic order of the intersection, for example, switching the traffic lights of other roads to red, entering the forbidden traffic state, and controlling the forbidden traffic state duration of other roads and The current roads are released for the same length of time.
- the control module 40 collects the vehicle images on the other roads in a preset order, and counts the number of vehicles to be released on other roads according to the collected images. Then, according to the number of vehicles to be released, the release time required for the vehicles to be released on other roads to pass through the intersection is calculated; when the traffic lights corresponding to the other roads are not allowed to pass, the traffic lights corresponding to the other roads are switched to the release state, and According to the calculated release time of the vehicle to be released through the intersection, the release state is maintained, corresponding to the state of the traffic light corresponding to each road of the control intersection.
- the embodiment realizes that the traffic light is adjusted according to the real-time road condition of each road at the intersection, so that the regulation of the traffic light is more flexible, and is no longer limited by a fixed regulation period, which can prolong the release time of the congested road and shorten the release time of the unobstructed road. Effectively release road resources, making the intersection more smooth.
- the second embodiment of the traffic light control device of the present application provides a traffic light control device.
- the traffic light control device further includes:
- the index module 50 is configured to count the number of vehicles to be released on each road where the intersections intersect, and calculate a congestion index of the roads.
- the index module 50 After identifying the number of vehicles to be released on the road based on the acquired images, the index module 50 counts the number of vehicles to be released on each road intersecting the current intersection. After obtaining the number of vehicles to be released on each road, the index module 50 calculates the congestion index of each road separately. According to the road section speed, road traffic density, traffic volume, road grade and travel time of each road, the congestion index of each road can be calculated comprehensively.
- the index module 50 obtains the congestion index for each road.
- the determining module 60 is configured to determine, according to the congestion index of each road, whether the intersection is in a congestion state.
- the judging module 60 judges whether the current intersection is in a congested state according to the congestion index of each road.
- the determination module 60 determines that the intersection is in a congested state. If the congestion index exceeds the preset threshold, the proportion of the total number of roads intersecting the intersection is lower than the preset ratio, indicating that most of the roads intersecting at the intersection are relatively smooth, only some of them are relatively congested, and the judgment module 60 determines that the intersection is not in a congested state. If the road congestion index intersected by the current intersection is lower than the preset threshold, it indicates that the road intersecting at the current intersection is relatively smooth, and the judging module 60 determines that the intersection is not in the congestion state.
- the judgment module 60 determines that the current intersection is in a congested state; if two intersections intersect at the intersection, one road is congested. The index is higher, exceeds the preset threshold, the road condition is poor, the congestion index of the other road is lower, lower than the preset threshold, and the road is in a clear state, the judging module 60 determines that the current intersection is not in a congested state; if the intersection intersects The congestion index of both roads is low, lower than the preset threshold, and the road condition is good, then the judging module 60 determines that the current intersection is not in a congested state.
- the determination module 60 obtains a determination result of whether or not the intersection is in a congested state.
- the sorting module 70 is configured to obtain a release order according to the congestion index of each road if the intersection is not in a congestion state.
- the sorting module 70 acquires the release order according to the congestion index of each road.
- the congestion index can be ranked from high to low, and the order of the corresponding roads is the release order, that is, the road with the highest congestion index is preferentially released, and the road with the lowest congestion index is finally released; or the congestion index can be used.
- the order of the corresponding roads is the release order, that is, the road with the lowest congestion index is preferentially released, and the road with the highest congestion index is finally released; of course, other sorting methods can be used according to actual needs. Flexible configuration.
- the duration module 30 is further configured to calculate, according to the number of vehicles to be released on the roads, a release duration required for the vehicles to be released on the roads to pass through the intersection.
- the duration module 30 needs to separately calculate the release duration required for the vehicle to be released on each road to pass through the intersection according to the number of vehicles to be released on each road.
- the control module 40 is further configured to sequentially switch the traffic lights corresponding to the roads to a release state according to the release order, and maintain the release time required for the vehicles to be released on the roads to pass through the intersections.
- the release state corresponds to controlling the state of the traffic light corresponding to other roads.
- control module 40 sequentially releases the vehicles to be released on each road according to the release order.
- the control module 40 obtains the first road that is preferentially released, and switches the traffic light corresponding to the road to the release state, and the duration of the release state is equal to the release duration required for the vehicle to be released through the intersection on the road. To ensure that all vehicles on the road to be released pass through the intersection. Then, the control module 40 acquires the second road according to the release order, and switches the traffic light corresponding to the road to the release state, and the duration of the release state is equal to the release duration required for the vehicle to be released through the intersection on the road to ensure the All the vehicles on the road to be released pass through the intersection. By analogy, until the release order, the control module 40 has released the vehicle to be released on the last road.
- the acquisition module 10 can re-acquire the images of the vehicles on the roads at the intersection, and the statistics module 20 counts the number of vehicles to be released on each road; then, the index module 50 calculates the congestion index of each road, and the determination module 60 determines whether the intersection is in a congestion. status.
- the state of the traffic light is flexibly adjusted according to the road condition of the intersection.
- the road conditions of the roads intersected by the intersections are extended, the release time of the congested roads is prolonged, the release time of the unobstructed roads is shortened, and the state of the traffic lights of the control intersections is flexibly improved, thereby greatly improving the traffic efficiency of the intersections.
- a third embodiment of the traffic light control device of the present application provides a traffic light control device.
- the control module 40 is further used based on the second embodiment of the traffic light control device of the present application shown in FIG. 6 . to,
- the traffic light state corresponding to each road is regulated according to a preset period.
- the control module 40 After obtaining the judgment result of whether the intersection is in a congested state, if the current intersection is in a congested state, that is, each road intersecting at the intersection is not smooth, the control module 40 adjusts the state of the traffic light corresponding to each road according to a preset period, so that the intersection is made.
- the number of vehicles released on each road is balanced, avoiding the state that some roads continue to be released and some roads are more congested.
- the preset period may be a fixed release duration and a stop duration, and the control module 40 alternately releases the vehicles of each road according to a fixed period.
- This embodiment realizes the release of the vehicle in each lane.
- a fourth embodiment of the traffic light control device of the present application provides a traffic light control device, which is based on any of the embodiments shown in FIG. 5 or FIG. 6 (this embodiment uses FIG. 5 as an example).
- the control module 40 is further configured to:
- the traffic lights corresponding to the roads are controlled to maintain the extended traffic state, and correspondingly control the traffic light states corresponding to the other roads.
- the control module 40 After the number of vehicles to be released on the road is counted, if the number of vehicles to be released on the road is zero, the control module 40 extends the prohibited traffic state of the traffic light corresponding to the road, and correspondingly controls the state of the traffic light corresponding to other roads to avoid Wasting time resources, allowing vehicles on other roads to be released can be quickly released.
- the duration of the current road extension prohibition passage state may be a preset duration, or may be flexibly configured according to the release time required for the vehicles to be released on other roads.
- the number of vehicles to be released on the road is re-acquired and correspondingly processed.
- the road resource is allocated to the road to be used for releasing the vehicle, and the vehicle release rate at the intersection is improved.
- FIG. 7 is a schematic structural diagram of a terminal device in a hardware operating environment according to an embodiment of the present invention.
- the traffic light control device of the embodiment of the invention may be a PC, a server or a server cluster, or may be integrated into a terminal device on a traffic light.
- the traffic light control device may include a processor 1001, such as a CPU, a communication bus 1002, a network interface 1003, and a memory 1004.
- the communication bus 1002 is used to implement the connection between these components.
- the communication network interface 1003 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).
- the memory 1004 may be a high speed RAM memory or a stable memory (non-volatile) Memory), such as disk storage.
- the memory 1004 can also optionally be a storage device independent of the aforementioned processor 1001.
- the terminal may further include a camera, RF (Radio) Frequency, RF) circuits, sensors, audio circuits, WiFi modules, and more.
- RF Radio
- the terminal structure shown in FIG. 7 does not constitute a limitation to the terminal, and may include more or less components than those illustrated, or a combination of certain components, or different component arrangements.
- an operating system, a network communication module, and a traffic light control program may be included in the memory 1004 as a computer storage medium.
- the network interface 1003 is mainly used to connect a background server and/or other traffic light control devices, and perform data communication with a background server and/or other traffic light control devices; and the processor 1001 can be used to call The traffic light control program stored in the memory 1004 and the traffic light control method provided by any of the embodiments of the present invention.
- the specific embodiment of the traffic light control device of the present invention is substantially the same as the embodiment of the traffic light control method described above, and is not described herein.
- the embodiment of the present invention further provides a computer readable storage medium, where the traffic light control program is stored on the computer readable storage medium, and the traffic light control program is executed by the processor to implement any embodiment of the present invention.
- a traffic light control method is provided.
- the specific embodiment of the computer readable storage medium of the present invention is substantially the same as the embodiment of the traffic light control method described above, and is not described herein.
- portions of the technical solution of the present invention that contribute substantially or to the prior art may be embodied in the form of a software product stored in a storage medium (such as a ROM/RAM as described above). , a disk, an optical disk, including a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
- a terminal device which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.
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Abstract
本申请公开了一种交通灯控制方法，该方法包括：若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；根据所述图像，统计所述道路上待放行车辆的数量；根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。本申请还公开了一种交通灯控制装置、设备和计算机可读存储介质。本申请有效释放了路面资源，使得路口的通行更加顺畅。
Description
本申请要求于2017年3月27日提交中国专利局、申请号为201710196107.1、发明名称为“交通灯控制方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在申请中。
技术领域
本申请涉及交通灯技术领域，尤其涉及一种交通灯控制方法、装置、设备和计算机可读存储介质。
背景技术
目前，我们使用的交通灯通常都是按照预设的固定周期，控制红、绿、黄三色信号灯的切换。但是，由于交通状况是实时变化的，由于时间、道路走向等原因，在路口交汇的各道路上的车流量是不同的。例如，南北走向道路上的车流量较多，需要多次绿灯的时长才能全部放行，而东西走向的道路上车辆非常少，绿灯的时间用不完即可完成车辆的全部放行时，若还是根据固定的时长切换信号灯，则会造成此南北走向道路更加拥堵，而东西方向的绿灯时间被浪费。可见，目前的交通灯控制方式过于死板，可能给路况带来更为恶劣的影响。
发明内容
本申请的主要目的在于提供一种交通灯控制方法、装置、设备和计算机可读存储介质，旨在解决交通灯的控制方式比较死板的技术问题。
为实现上述目的，本申请提供一种交通灯控制方法，所述交通灯控制方法包括以下步骤：
若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；
根据所述图像，统计所述道路上待放行车辆的数量；
根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；
在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
此外，为实现上述目的，本申请还提供一种交通灯控制装置，所述交通灯控制装置包括：
采集模块，用于若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；
统计模块，用于根据所述图像，统计所述道路上待放行车辆的数量；
时长模块，用于根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；
控制模块，用于在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
此外，为实现上述目的，本申请还提供一种交通灯控制设备，所述交通灯控制设备包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的交通灯控制程序，所述交通灯控制程序被所述处理器执行时实现如下步骤：
若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；
根据所述图像，统计所述道路上待放行车辆的数量；
根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；
在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
此外，为实现上述目的，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有交通灯控制程序，所述交通灯控制程序被处理器执行时实现如下步骤：
若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；
根据所述图像，统计所述道路上待放行车辆的数量；
根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；
在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
本申请实施例提出的一种交通灯控制方法、装置、设备和计算机可读存储介质，若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集道路上车辆的图像，此道路在路口与其他道路相交，以获取此道路的实时路况；然后，根据采集的图像，统计此道路上待放行车辆的数量；然后，根据待放行车辆的数量，计算待放行车辆通过路口所需的放行时长，作为调控交通灯的依据；然后，在禁止通行状态的剩余时长减小为零时，切换此道路对应的交通灯为放行状态，并根据待放行车辆通过路口所需的放行时长保持放行状态，以放行此道路上的全部待放行车辆，同时，对应控制路口其他道路所对应的交通灯状态，以保障此路口的交通秩序。本申请实现了根据路口各道路的实时路况对应调控交通灯，使得交通灯的调控更加灵活，不再受限于固定的调控周期，能够延长拥堵道路的放行时间，缩短通畅道路的放行时间，有效释放了路面资源，使得路口的通行更加顺畅。
附图说明
图1为本申请交通灯控制方法第一实施例的流程示意图；
图2为本申请交通灯控制方法第二实施例的流程示意图；
图3为本申请交通灯控制方法第三实施例的流程示意图；
图4为本申请交通灯控制方法第四实施例的流程示意图；
图5为本申请交通灯控制装置第一实施例的功能模块示意图；
图6为本申请交通灯控制装置第二实施例的功能模块示意图；
图7是本发明实施例方案涉及的硬件运行环境的终端设备结构示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
参照图1，本申请交通灯控制方法第一实施例提供一种交通灯控制方法，所述交通灯控制方法包括：
步骤S10、若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交。
本申请通过监控路口各道路的车流量，自动计算放行道路上车辆的时长，从而根据得到的时长自动调路口的交通灯时间，实现了对交通灯的灵活控制，能够有效减少路面拥堵，更加合理的利用路面资源。
具体的，作为一种实施方式，首先，若一道路对应的交通灯为禁止通行状态，例如红灯，则在道路静止通行状态的剩余时长减小到预设时长时，交通灯控制装置需要采集道路上车辆的图像。需要说明的是，此道路与其他道路相交形成路口。静止通行状态的剩余时长减小到预设时长，可以是道路的红灯剩余3秒、2秒等，从而能够更加准确的获取此道路上等待放行的车辆数量。
交通灯控制装置可以通过路口安装的摄像头等图像采集装置，采集路口附近此道路上车辆的图像。当然，也可以通过道路周边安装的图像采集装置进行车辆图像的采集。在采集车辆图像时，可以仅采集在路口等待通行的静止车辆的图像，也可以采集静止车辆的图像以及道路上行驶中的车辆图像，可根据实际需要灵活设置。
进一步地，作为一种实施方式，所述采集的图像为所述道路预设路面长度中车辆的图像。为了更加准确地获取待放行车辆的数量，交通灯控制装置仅采集道路预设路面长度中的车辆图像，例如，从路口起，1千米以内的车辆图像。预设的路面长度可根据道路的长度以及路口之间的距离进行灵活配置。需要说明的是，在采集车辆的图像时，可以仅采集道路在路口一侧的单向车道中的车辆图像，也可以采集道路在路口一侧的双向车道中的车辆图像；而且，可以采集道路在路口两侧的同一单项车道中的车辆图像，也可以采集道路在路口两侧的双向车道中的车辆图像。
步骤S20、根据所述图像，统计所述道路上待放行车辆的数量。
在采集得到车辆的图像后，交通灯控制装置根据得到的图像，统计道路上的待放行车辆。
具体的，作为一种实施方式，交通灯控制装置根据采集的图像，识别图像中的车辆，并以车辆的车牌号、颜色等特征对车辆进行标识。然后，将图像中的车辆全部作为待放行车辆，统计图像中的车辆数量，将统计得到的车辆数量作为待放行车辆的数量。进一步地，还可以根据车辆的行驶状态，统计待放行车辆的数量。例如，仅将静止等待放行的车辆作为待放行车辆，则仅统计图像中的静止等待车辆的数量，作为待放行车辆的数量。
作为一种实施方式，所述待放行车辆包括静止等待车辆及流动车辆。其中，静止等待车辆也即当前道路上，在路口处等待放行的车辆；流动车辆也即当前道路上处于行驶状态中、还未行驶至等待放行位置的车辆。则在统计待放行车辆的数量时，不仅需要统计图像中静止等待车辆的数量，还需要统计图像中的流动车辆的数量。将静止等待车辆的数量与流动车辆的数量求和，得到的数量即为待放行车辆的数量。
步骤S30、根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长。
在得到待放行车辆的数量后，计算待放行车辆通过路口所需的放行时长。
具体的，作为一种实施方式，预先根据路口的长度、车道数量等因素，配置单位时间内通过路口的车辆数量。然后，根据当前待放行车辆的数量，以及单位时间内通过路口的车辆数量，计算得到待放行车辆全部通过路口所需的放行时长。例如，若当前的待放行车辆为图像中的静止车辆，则计算得到的放行时长为全部待放行车辆从当前的位置行驶通过路口所需的时长。若当前的待放行车辆包括图像中的静止车辆和流动车辆，则计算得到的放行时长为静止车辆及流动车辆全部行驶通过路口所需的时长。
步骤S40、在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
在当前道路对应的交通灯的静止通行状态不断减小到零时，也即当前道路的静止通行状态结束，交通灯控制装置切换此道路对应的交通灯为放行状态，例如，切换为绿灯，用以放行当前此道路上的待放行车辆。
并且，控制放行状态的时长与步骤S30中计算得到的待放行车辆全部通过路口所需的放行时长相等，以保障此道路上的全部待放行车辆都能够通过路口。同时，交通灯控制装置对应控制此路口其他道路的交通灯状态，以保障此路口的通行秩序，例如，切换其他道路的交通灯为红色，进入禁止通行状态，并控制其他道路的禁止通行状态时长与当前道路的放行时长相等。
在其他道路的交通灯禁止通行状态的剩余时长减小至预设时长时，交通灯控制装置按预设的次序采集其他道路上的车辆图片，根据采集的图像，统计其他道路上待放行车辆的数量；然后，根据待放行车辆的数量，计算其他道路上待放行车辆通过路口所需的放行时长；在其他道路对应的交通灯禁止通行状态结束时，切换其他道路对应的交通灯为放行状态，并根据计算得到的待放行车辆通过路口所需的放行时长保持放行状态，对应控制路口各道路所对应的交通灯状态。
由此，实现了根据路口各道路的路况，分别对应控制各道路的放行时间。
在本实施例中，若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集道路上车辆的图像，此道路在路口与其他道路相交，以获取此道路的实时路况；然后，根据采集的图像，统计此道路上待放行车辆的数量；然后，根据待放行车辆的数量，计算待放行车辆通过路口所需的放行时长，作为调控交通灯的依据；然后，在禁止通行状态的剩余时长减小为零时，切换此道路对应的交通灯为放行状态，并根据待放行车辆通过路口所需的放行时长保持放行状态，以放行此道路上的全部待放行车辆，同时，对应控制路口其他道路所对应的交通灯状态，以保障此路口的交通秩序。本实施例实现了根据路口各道路的实时路况对应调控交通灯，使得交通灯的调控更加灵活，不再受限于固定的调控周期，能够延长拥堵道路的放行时间，缩短通畅道路的放行时间，有效释放了路面资源，使得路口的通行更加顺畅。
进一步的，参照图2，本申请交通灯控制方法第二实施例提供一种交通灯控制方法，基于上述图1所示的实施例，所述交通灯控制方法还包括：
步骤S50、统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数。
在根据采集的图像识别得到道路上待放行车辆的数量后，交通灯控制装置统计当前路口相交的各道路上待放行车辆的数量。在得到各道路上待放行车辆的数量后，分别计算各道路的拥堵指数。可根据各道路的路段速度、道路交通密度、交通量、道路等级和出行时间等因素，综合考虑计算得到各道路的拥堵指数。
由此，得到各道路的拥堵指数。
步骤S60、根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态。
在得到各道路的拥堵指数后，根据各道路的拥堵指数，判断当前路口是否处于拥堵状态。
作为一种实施方式，若拥堵指数超过预设阈值的道路数量，占路口相交的道路的总数量的比例超过预设比例，则说明当前路口相交的道路中，大部分都比较拥堵，则判定路口处于拥堵状态。若拥堵指数超过预设阈值的道路数量，占路口相交的道路的总数量的比例低于预设比例，则说明当前路口相交的道路中，大部分都比较通畅，仅有部分比较拥堵，判定路口不处于拥堵状态。若当前路口相交的各道路拥堵指数都低于预设阈值，则说明当前路口相交的道路都比较通畅，判定路口不处于拥堵状态。
例如，若路口相交的两条道路的拥堵指数均较高，超过预设的阈值，路况较差，则判定当前路口处于拥堵状态；若路口相交的两条道路中，一条道路的拥堵指数较高，超过预设的阈值，路况较差，另一条道路的拥堵指数较低，低于预设的阈值，道路处于畅通状态，则判定当前路口不处于拥堵状态；若路口相交的两条道路的拥堵指数均较低，低于预设的阈值，路况良好，则判定当前路口不处于拥堵状态。
由此，得到路口是否处于拥堵状态的判断结果。
步骤S70、若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序。
在得到路口是否处于拥堵状态的判断结果后，若当前路口不处于拥堵状态，则根据各道路的拥堵指数获取放行次序。
例如，可以将拥堵指数由高至低进行排列，所对应的各道路的排序即为放行次序，也即，优先放行拥堵指数最高的道路，最后放行拥堵指数最低的道路；也可以是将拥堵指数由低至高进行排列，所对应的各道路的排序即为放行次序，也即，优先放行拥堵指数最低的道路，最后放行拥堵指数最高的道路；当然，也可以其他的排序方法，可根据实际需要灵活配置。
步骤S80、根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长。
若路口不处于拥堵状态，则需要根据各道路上的待放行车辆的数量，分别计算得到各道路上的待放行车辆通过路口所需的放行时长。
步骤S90、根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
在得到放行次序，和各道路上的待放行车辆通过路口所需的放行时长后，根据放行次序，依次放行各道路上的待放行车辆。
具体的，根据放行次序，获取优先放行的第一条道路，切换此道路对应的交通灯为放行状态，保持放行状态的时长与此道路上待放行车辆通过路口所需的放行时长相等，以保障此道路上的待放行车辆全部通过路口。然后，根据放行次序，获取第二条道路，切换此道路对应的交通灯为放行状态，保持放行状态的时长与此道路上待放行车辆通过路口所需的放行时长相等，以保障此道路上的待放行车辆全部通过路口。以此类推，直至根据放行次序，已经将最后一条道路的待放行车辆放行完毕。然后，交通灯控制装置可以重新采集路口各道路上车辆的图像，统计各道路上待放行车辆的数量；然后，计算各道路的拥堵指数，判断此路口是否处于拥堵状态。
由此，实现了根据路口路况，灵活调控交通灯的状态。
在本实施例中，在得到道路上的待放行车辆数量后，统计路口相交的各道路上待放行车辆的数量，计算各道路的拥堵指数，以获取各道路的路况；然后，根据各道路的拥堵指数，判断当前路口是否处于拥堵状态，用以根据各道路的路况对路口的路况进行合理推断；若路口不处于拥堵状态，也即当前路口路况较好，则根据各道路的拥堵指数，获取放行次序，用以有秩序的放行各道路的待放行车辆；然后，根据各道路上的待放行车辆的数量，计算各道路上的待放行车辆通过路口所需的放行时长；根据放行次序，依次切换各道路对应的交通灯为放行状态，并根据各道路上的待放行车辆通过路口所需的放行时长保持放行状态，对应控制其他道路所对应的交通灯状态。本实施例实现了根据路口相交的各道路的路况，延长拥堵道路的放行时间，缩短通畅道路的放行时间，灵活把控路口交通灯的状态，大大提高了路口的通行效率。
进一步地，参照图3，本申请交通灯控制方法第三实施例提供一种交通灯控制方法，基于上述图2所示的实施例，所述步骤S60之后，还包括：
步骤S100、若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
在得到路口是否处于拥堵状态的判断结果后，若当前路口处于拥堵状态，也即路口相交的各个道路均不畅通，则根据预设的周期调控各道路对应的交通灯状态，使得路口的各道路放行的车辆数量保持均衡，避免部分道路持续放行、而部分道路更加拥堵的状态。其中，预设的周期可以是固定的放行时长和停止时长，交通灯控制装置根据固定的周期，轮流放行各道路的车辆。
在本实施例中，若所述路口处于拥堵状态，则按照预设的周期调控路口相交的各道路所对应的交通灯状态，以使个车道的车辆放行均衡。
进一步地，参照图4，本申请交通灯控制方法第四实施例提供一种交通灯控制方法，基于上述图1、图2或图3所示的实施例（本实施例以图1为例）所述交通灯控制方法还包括：
步骤S110、若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯延长禁止通行状态，并对应控制其他道路所对应的交通灯状态。
在统计得到道路上的待放行车辆数量后，若道路上的待放行车辆数量为零，则延长此道路对应交通灯的禁止通行状态，对应控制其他道路对应的交通灯状态，以避免浪费时间资源，让其他道路的待放行车辆可以快速得到放行。需要说明的是，当前道路延长禁止通行状态的时长可以是预设时长，也可以根据其他道路的待放行车辆所需的放行时长进行灵活配置。
当路口其他道路上的待放行车辆已放行完毕后，或是当前道路禁止通行状态的剩余时长减少至预设时长时，再重新获取此道路上的待放行车辆数量，并进行相应的处理。
在本实施例中，若道路上的待放行车辆数量为零，则控制道路对应的交通灯延长禁止通行状态，并对应控制其他道路所对应的交通灯状态，以将路面资源分配给待放行车辆多的道路使用，提高路口的车辆放行速率。
参照图5，本申请交通灯控制装置第一实施例提供一种交通灯控制装置，所述交通灯控制装置包括：
采集模块10，用于若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交。
具体的，作为一种实施方式，首先，若一道路对应的交通灯为禁止通行状态，例如红灯，则在道路静止通行状态的剩余时长减小到预设时长时，采集模块10需要采集道路上车辆的图像。需要说明的是，此道路与其他道路相交形成路口。静止通行状态的剩余时长减小到预设时长，可以是道路的红灯剩余3秒、2秒等，从而能够更加准确的获取此道路上等待放行的车辆数量。
采集模块10可以通过路口安装的摄像头等图像采集装置，采集路口附近此道路上车辆的图像。当然，也可以通过道路周边安装的图像采集装置进行车辆图像的采集。在采集车辆图像时，采集模块10可以仅采集在路口等待通行的静止车辆的图像，也可以采集静止车辆的图像以及道路上行驶中的车辆图像，可根据实际需要灵活设置。
进一步地，作为一种实施方式，所述采集的图像为所述道路预设路面长度中车辆的图像。
为了更加准确地获取待放行车辆的数量，采集模块10仅采集道路预设路面长度中的车辆图像，例如，从路口起，1千米以内的车辆图像。预设的路面长度可根据道路的长度以及路口之间的距离进行灵活配置。需要说明的是，在采集车辆的图像时，采集模块10可以仅采集道路在路口一侧的单向车道中的车辆图像，也可以采集道路在路口一侧的双向车道中的车辆图像；而且，采集模块10可以采集道路在路口两侧的同一单项车道中的车辆图像，也可以采集道路在路口两侧的双向车道中的车辆图像。
统计模块20，用于根据所述图像，统计所述道路上待放行车辆的数量。
在采集得到车辆的图像后，统计模块20根据得到的图像，统计道路上的待放行车辆。
具体的，作为一种实施方式，统计模块20根据采集的图像，识别图像中的车辆，并以车辆的车牌号、颜色等特征对车辆进行标识。然后，统计模块20将图像中的车辆全部作为待放行车辆，统计图像中的车辆数量，将统计得到的车辆数量作为待放行车辆的数量。进一步地，统计模块20还可以根据车辆的行驶状态，统计待放行车辆的数量。例如，仅将静止等待放行的车辆作为待放行车辆，则统计模块20仅统计图像中的静止等待车辆的数量，作为待放行车辆的数量。
作为一种实施方式，所述待放行车辆包括静止等待车辆及流动车辆。其中，静止等待车辆也即当前道路上，在路口处等待放行的车辆；流动车辆也即当前道路上处于行驶状态中、还未行驶至等待放行位置的车辆。则统计模块20在统计待放行车辆的数量时，不仅需要统计图像中静止等待车辆的数量，还需要统计图像中的流动车辆的数量。统计模块20将静止等待车辆的数量与流动车辆的数量求和，得到的数量即为待放行车辆的数量。
时长模块30，用于根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长。
在得到待放行车辆的数量后，时长模块30计算待放行车辆通过路口所需的放行时长。
具体的，作为一种实施方式，时长模块30预先根据路口的长度、车道数量等因素，配置单位时间内通过路口的车辆数量。然后，时长模块30根据当前待放行车辆的数量，以及单位时间内通过路口的车辆数量，计算得到待放行车辆全部通过路口所需的放行时长。例如，若当前的待放行车辆为图像中的静止车辆，则计算得到的放行时长为全部待放行车辆从当前的位置行驶通过路口所需的时长。若当前的待放行车辆包括图像中的静止车辆和流动车辆，则计算得到的放行时长为静止车辆及流动车辆全部行驶通过路口所需的时长。
控制模块40，用于在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
在当前道路对应的交通灯的静止通行状态不断减小到零时，也即当前道路的静止通行状态结束，控制模块40切换此道路对应的交通灯为放行状态，例如，切换为绿灯，用以放行当前此道路上的待放行车辆。并且，控制模块40控制放行状态的时长与时长模块30计算得到的待放行车辆全部通过路口所需的放行时长相等，以保障此道路上的全部待放行车辆都能够通过路口。同时，控制模块40对应控制此路口其他道路的交通灯状态，以保障此路口的通行秩序，例如，切换其他道路的交通灯为红色，进入禁止通行状态，并控制其他道路的禁止通行状态时长与当前道路的放行时长相等。
在其他道路的交通灯禁止通行状态的剩余时长减小至预设时长时，控制模块40按预设的次序采集其他道路上的车辆图片，根据采集的图像，统计其他道路上待放行车辆的数量；然后，根据待放行车辆的数量，计算其他道路上待放行车辆通过路口所需的放行时长；在其他道路对应的交通灯禁止通行状态结束时，切换其他道路对应的交通灯为放行状态，并根据计算得到的待放行车辆通过路口所需的放行时长保持放行状态，对应控制路口各道路所对应的交通灯状态。
由此，实现了根据路口各道路的路况，分别对应控制各道路的放行时间。
本实施例实现了根据路口各道路的实时路况对应调控交通灯，使得交通灯的调控更加灵活，不再受限于固定的调控周期，能够延长拥堵道路的放行时间，缩短通畅道路的放行时间，有效释放了路面资源，使得路口的通行更加顺畅。
进一步地，参照图6，本申请交通灯控制装置第二实施例提供一种交通灯控制装置，基于上述图5所示的实施例，所述交通灯控制装置还包括：
指数模块50，用于统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数。
在根据采集的图像识别得到道路上待放行车辆的数量后，指数模块50统计当前路口相交的各道路上待放行车辆的数量。在得到各道路上待放行车辆的数量后，指数模块50分别计算各道路的拥堵指数。可根据各道路的路段速度、道路交通密度、交通量、道路等级和出行时间等因素，综合考虑计算得到各道路的拥堵指数。
由此，指数模块50得到各道路的拥堵指数。
判断模块60，用于根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态。
在得到各道路的拥堵指数后，判断模块60根据各道路的拥堵指数，判断当前路口是否处于拥堵状态。
作为一种实施方式，若拥堵指数超过预设阈值的道路数量，占路口相交的道路的总数量的比例超过预设比例，则说明当前路口相交的道路中，大部分都比较拥堵，则判断模块60判定路口处于拥堵状态。若拥堵指数超过预设阈值的道路数量，占路口相交的道路的总数量的比例低于预设比例，则说明当前路口相交的道路中，大部分都比较通畅，仅有部分比较拥堵，判断模块60判定路口不处于拥堵状态。若当前路口相交的各道路拥堵指数都低于预设阈值，则说明当前路口相交的道路都比较通畅，判断模块60判定路口不处于拥堵状态。
例如，若路口相交的两条道路的拥堵指数均较高，超过预设的阈值，路况较差，则判断模块60判定当前路口处于拥堵状态；若路口相交的两条道路中，一条道路的拥堵指数较高，超过预设的阈值，路况较差，另一条道路的拥堵指数较低，低于预设的阈值，道路处于畅通状态，则判断模块60判定当前路口不处于拥堵状态；若路口相交的两条道路的拥堵指数均较低，低于预设的阈值，路况良好，则判断模块60判定当前路口不处于拥堵状态。
由此，判断模块60得到路口是否处于拥堵状态的判断结果。
排序模块70，用于若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序。
在得到路口是否处于拥堵状态的判断结果后，若当前路口不处于拥堵状态，则排序模块70根据各道路的拥堵指数获取放行次序。例如，可以将拥堵指数由高至低进行排列，所对应的各道路的排序即为放行次序，也即，优先放行拥堵指数最高的道路，最后放行拥堵指数最低的道路；也可以是将拥堵指数由低至高进行排列，所对应的各道路的排序即为放行次序，也即，优先放行拥堵指数最低的道路，最后放行拥堵指数最高的道路；当然，也可以其他的排序方法，可根据实际需要灵活配置。
所述时长模块30，还用于根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长。
若路口不处于拥堵状态，则时长模块30需要根据各道路上的待放行车辆的数量，分别计算得到各道路上的待放行车辆通过路口所需的放行时长。
所述控制模块40，还用于根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
在得到放行次序，和各道路上的待放行车辆通过路口所需的放行时长后，控制模块40根据放行次序，依次放行各道路上的待放行车辆。
具体的，根据放行次序，控制模块40获取优先放行的第一条道路，切换此道路对应的交通灯为放行状态，保持放行状态的时长与此道路上待放行车辆通过路口所需的放行时长相等，以保障此道路上的待放行车辆全部通过路口。然后，控制模块40根据放行次序，获取第二条道路，切换此道路对应的交通灯为放行状态，保持放行状态的时长与此道路上待放行车辆通过路口所需的放行时长相等，以保障此道路上的待放行车辆全部通过路口。以此类推，直至根据放行次序，控制模块40已经将最后一条道路的待放行车辆放行完毕。然后，采集模块10可以重新采集路口各道路上车辆的图像，统计模块20统计各道路上待放行车辆的数量；然后，指数模块50计算各道路的拥堵指数，判断模块60判断此路口是否处于拥堵状态。
由此，实现了根据路口路况，灵活调控交通灯的状态。
本实施例实现了根据路口相交的各道路的路况，延长拥堵道路的放行时间，缩短通畅道路的放行时间，灵活把控路口交通灯的状态，大大提高了路口的通行效率。
进一步地，参照图6，本申请交通灯控制装置第三实施例提供一种交通灯控制装置，基于上述图6所示的本申请交通灯控制装置第二实施例，所述控制模块40还用于，
若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
在得到路口是否处于拥堵状态的判断结果后，若当前路口处于拥堵状态，也即路口相交的各个道路均不畅通，则控制模块40根据预设的周期调控各道路对应的交通灯状态，使得路口的各道路放行的车辆数量保持均衡，避免部分道路持续放行、而部分道路更加拥堵的状态。其中，预设的周期可以是固定的放行时长和停止时长，控制模块40根据固定的周期，轮流放行各道路的车辆。
本实施例实现了各车道的车辆放行均衡。
进一步地，参照图5，本申请交通灯控制装置第四实施例提供一种交通灯控制装置，基于上述图5或图6所示的任一实施例（本实施例以图5为例），所述控制模块40还用于，
若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯保持延长通行状态，并对应控制其他道路所对应的交通灯状态。
在统计得到道路上的待放行车辆数量后，若道路上的待放行车辆数量为零，则控制模块40延长此道路对应交通灯的禁止通行状态，对应控制其他道路对应的交通灯状态，以避免浪费时间资源，让其他道路的待放行车辆可以快速得到放行。需要说明的是，当前道路延长禁止通行状态的时长可以是预设时长，也可以根据其他道路的待放行车辆所需的放行时长进行灵活配置。
当路口其他道路上的待放行车辆已放行完毕后，或是当前道路禁止通行状态的剩余时长减少至预设时长时，再重新获取此道路上的待放行车辆数量，并进行相应的处理。
本实施例实现了将路面资源分配给待放行车辆多的道路使用，提高路口的车辆放行速率。
如图7所示，图7是本发明实施例方案涉及的硬件运行环境的终端设备结构示意图。
本发明实施例交通灯控制设备可以是PC、服务器或服务器集群，也可以集成在交通灯上的终端设备。如图7所示，该交通灯控制设备可以包括：处理器1001，例如CPU，通信总线1002，网络接口1003，存储器1004。其中，通信总线1002用于实现这些组件之间的连接通信网络接口1003可选的可以包括标准的有线接口、无线接口（如WI-FI接口）。存储器1004可以是高速RAM存储器，也可以是稳定的存储器（non-volatile
memory），例如磁盘存储器。存储器1004可选的还可以是独立于前述处理器1001的存储装置。可选地，终端还可以包括摄像头、RF（Radio
Frequency，射频）电路，传感器、音频电路、WiFi模块等等。本领域技术人员可以理解，图7中示出的终端结构并不构成对终端的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
如图7所示，作为一种计算机存储介质的存储器1004中可以包括操作系统、网络通信模块以及交通灯控制程序。在图7所示的终端中，网络接口1003主要用于连接后台服务器和/或其他交通灯控制设备，与后台服务器和/或其他交通灯控制设备进行数据通信；而处理器1001可以用于调用存储器1004中存储的交通灯控制程序，并执行本发明任一实施例所提供的交通灯控制方法。本发明交通灯控制设备的具体实施例与上述交通灯控制方法各实施例基本相同，在此不作赘述。
此外，本发明实施例还提出一种计算机可读存储介质，所述计算机可读存储介质上存储有交通灯控制程序，所述交通灯控制程序被处理器执行时实现本发明任一实施例所提供的交通灯控制方法。本发明计算机可读存储介质的具体实施例与上述交通灯控制方法各实施例基本相同，在此不作赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者系统不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者系统所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者系统中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在如上所述的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
以上仅为本申请的可选实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。
Claims (20)
- 一种交通灯控制方法，其特征在于，所述交通灯控制方法包括以下步骤：若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；根据所述图像，统计所述道路上待放行车辆的数量；根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求1所述的交通灯控制方法，其特征在于，所述交通灯控制方法还包括：统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数；根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态；若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序；根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长；根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求2所述的交通灯控制方法，其特征在于，所述根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态的步骤之后，还包括：若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
- 如权利要求1所述的交通灯控制方法，其特征在于，所述交通灯控制方法还包括：若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯保持延长通行状态，并对应控制其他道路所对应的交通灯状态。
- 如权利要求1所述的交通灯控制方法，其特征在于，所述采集的图像为所述道路预设路面长度中车辆的图像，所述待放行车辆包括静止等待车辆及流动车辆。
- 一种交通灯控制装置，其特征在于，所述交通灯控制装置包括：采集模块，用于若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；统计模块，用于根据所述图像，统计所述道路上待放行车辆的数量；时长模块，用于根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；控制模块，用于在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求6所述的交通灯控制装置，其特征在于，所述交通灯控制装置还包括：指数模块，用于统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数；判断模块，用于根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态；排序模块，用于若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序；所述时长模块，还用于根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长；所述控制模块，还用于根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求7所述的交通灯控制装置，其特征在于，所述控制模块还用于，若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
- 如权利要求6所述的交通灯控制装置，其特征在于，所述控制模块还用于，若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯保持延长通行状态，并对应控制其他道路所对应的交通灯状态。
- 如权利要求6所述的交通灯控制装置，其特征在于，所述采集的图像为所述道路预设路面长度中车辆的图像，所述待放行车辆包括静止等待车辆及流动车辆。
- 一种交通灯控制设备，其特征在于，所述交通灯控制设备包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的交通灯控制程序，所述交通灯控制程序被所述处理器执行时实现如下步骤：若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；根据所述图像，统计所述道路上待放行车辆的数量；根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求11所述的交通灯控制设备，其特征在于，所述交通灯控制程序被所述处理器执行时还实现如下步骤：统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数；根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态；若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序；根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长；根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求12所述的交通灯控制设备，其特征在于，所述交通灯控制程序被所述处理器执行时还实现如下步骤：若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
- 如权利要求11所述的交通灯控制设备，其特征在于，所述交通灯控制程序被所述处理器执行时还实现如下步骤：若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯保持延长通行状态，并对应控制其他道路所对应的交通灯状态。
- 如权利要求11所述的交通灯控制设备，其特征在于，所述采集的图像为所述道路预设路面长度中车辆的图像，所述待放行车辆包括静止等待车辆及流动车辆。
- 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有交通灯控制程序，所述交通灯控制程序被处理器执行时实现如下步骤：若道路对应的交通灯为禁止通行状态，则在静止通行状态的剩余时长减小到预设时长时，采集所述道路上车辆的图像，所述道路在路口与其他道路相交；根据所述图像，统计所述道路上待放行车辆的数量；根据所述待放行车辆的数量，计算所述待放行车辆通过所述路口所需的放行时长；在禁止通行状态的剩余时长减小为零时，切换所述道路对应的交通灯为放行状态，并根据所述放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求16所述的计算机可读存储介质，其特征在于，所述交通灯控制程序被处理器执行时还实现如下步骤：统计所述路口相交的各道路上待放行车辆的数量，计算所述各道路的拥堵指数；根据所述各道路的拥堵指数，判断所述路口是否处于拥堵状态；若所述路口不处于拥堵状态，则根据所述各道路的拥堵指数，获取放行次序；根据所述各道路上的待放行车辆的数量，计算所述各道路上的待放行车辆通过所述路口所需的放行时长；根据所述放行次序，依次切换所述各道路对应的交通灯为放行状态，并根据所述各道路上的待放行车辆通过所述路口所需的放行时长保持所述放行状态，对应控制其他道路所对应的交通灯状态。
- 如权利要求17所述的计算机可读存储介质，其特征在于，所述交通灯控制程序被处理器执行时还实现如下步骤：若所述路口处于拥堵状态，则按照预设的周期调控所述各道路对应的交通灯状态。
- 如权利要求16所述的计算机可读存储介质，其特征在于，所述交通灯控制程序被处理器执行时还实现如下步骤：若所述道路上的待放行车辆数量为零，则控制所述道路对应的交通灯保持延长通行状态，并对应控制其他道路所对应的交通灯状态。
- 如权利要求16所述的计算机可读存储介质，其特征在于，所述采集的图像为所述道路预设路面长度中车辆的图像，所述待放行车辆包括静止等待车辆及流动车辆。
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| CN108986493A (zh) * | 2018-08-21 | 2018-12-11 | 北京深瞐科技有限公司 | 交通信号灯通行时间分配方法及其装置 |
| CN109801492A (zh) * | 2019-01-21 | 2019-05-24 | 深圳市敢为软件技术有限公司 | 交通拥堵的检测方法、装置及存储介质 |
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