Traffic signal timing method, device, apparatus and storage medium

Abstract

The application discloses a traffic signal lamp timing method and device, equipment and storage medium, the method comprises: if the green light signal in the traffic signal lamp is opened, the driving state information of the vehicle behind the stop line in each preset period in the preset period is acquired, the driving state information comprises: average passing speed and average headway; according to the average headway, whether the vehicle behind the stop line is in abnormal state is determined; when the vehicle behind the stop line is not in abnormal state, according to the average passing speed, the timing information of the traffic signal lamp is determined; the timing information is sent to the signal machine to adjust the timing of the traffic signal lamp. The traffic signal lamp timing method of the application can improve the road traffic efficiency, thereby reasonably allocating traffic resources, reducing the occurrence of congestion, realizing accurate calculation of timing information, making the timing information adapt to the road operating conditions, and improving the accuracy and effectiveness of the timing information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road safety, in particular to a traffic signal timing method, device, equipment and storage medium. BACKGROUND

[0002] As an important traffic facility of traffic management, the reasonable setting of the timing scheme of the traffic signal plays a crucial role in road traffic operation.

[0003] The existing traffic signal usually adopts fixed timing. During the morning or evening peak, the traffic flow is large, and the fixed timing cannot meet the traffic of the vehicle, which will cause the road congestion and the obvious decrease of the traffic efficiency. Therefore, how to reasonably adjust the traffic timing is a problem to be solved. SUMMARY

[0004] In order to solve the problem that the fixed traffic timing in the prior art easily causes the traffic disorder at the intersection and the traffic congestion, the present application provides a traffic signal timing method, device, equipment and storage medium, so that the timing information is adapted to the road operation condition, the traffic resources are reasonably configured, the traffic efficiency is improved, and the occurrence of the congestion phenomenon is reduced.

[0005] In a first aspect, an embodiment of the present application provides a traffic signal timing method, which comprises:

[0006] If the green signal in the traffic signal is turned on, the driving state information of the vehicle behind the stop line in each preset period in a preset period is acquired, and the driving state information comprises: average traffic speed and average headway;

[0007] According to the average headway, it is determined whether the vehicle behind the stop line is in an abnormal state;

[0008] When the vehicle behind the stop line is not in the abnormal state, the timing information of the traffic signal is determined according to the average traffic speed;

[0009] The timing information is sent to the signal machine to adjust the timing of the traffic signal.

[0010] Optionally, the determination of the timing information of the traffic signal according to the average traffic speed comprises:

[0011] The target average headway of the vehicle behind the stop line is determined according to the average traffic speed, and the target average headway comprises: first average headway or second average headway;

[0012] The timing information of the traffic signal is determined according to the target average headway;

[0013] The first average headway time is an average headway time of the vehicle at a first monitoring point, and the second average headway time is an average headway time of the vehicle at a second monitoring point. The first monitoring point and the second monitoring point are different points on the road along the driving direction behind the stop line.

[0014] Optionally, the method further comprises:

[0015] If the average traffic speed is within a first target range, the target average headway time is determined as the second average headway time.

[0016] If the average traffic speed is within a second target range, the target average headway time is determined according to the average traffic speed and the number of slow driving times.

[0017] If the average traffic speed is within a third target range, the target average headway time is determined as the first average headway time.

[0018] Optionally, the method further comprises:

[0019] If the number of slow driving times is greater than a threshold, the target average headway time is determined as the second average headway time.

[0020] If the number of slow driving times is less than the threshold, the target average headway time is determined as the first average headway time.

[0021] Optionally, the method further comprises:

[0022] When the vehicle behind the stop line is in an abnormal state, the timing information of the traffic signal light is determined according to the first average headway time.

[0023] Optionally, the method further comprises:

[0024] If the first average headway time and / or the second average headway time is not empty and is less than a target threshold, it is determined that the vehicle behind the stop line is in an abnormal state.

[0025] Optionally, the method further comprises:

[0026] The traffic speed, the first headway time, and the second headway time of the vehicle behind the stop line at an interval time in each preset time period within a preset period are obtained.

[0027] fitting the traffic speed, the first headway, and the second headway of the vehicle behind the stop line in each preset time period in a preset period, to obtain a traffic speed-time curve, a first headway-time curve, and a second headway-time curve;

[0028] determining the average traffic speed, the first average headway, and the second average headway of the vehicle behind the stop line in each preset time period in a preset period according to the traffic speed-time curve, the first headway-time curve, and the second headway-time curve.

[0029] In a second aspect, an embodiment of the present application further provides a traffic signal timing device, comprising:

[0030] an acquisition module, configured to acquire driving state information of a vehicle behind a stop line in each preset time period in a preset period if a green signal in a traffic signal is on, wherein the driving state information comprises an average traffic speed and an average headway;

[0031] a first determination module, configured to determine whether the vehicle behind the stop line is in an abnormal state according to the average headway;

[0032] a second determination module, configured to determine timing information of the traffic signal according to the average traffic speed when the vehicle behind the stop line is not in the abnormal state;

[0033] a sending module, configured to send the timing information to a signal machine to adjust the timing of the traffic signal.

[0034] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to enable the electronic device to implement the method in the first aspect.

[0035] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions, and the computer program is executed by a processor to implement the method in the first aspect.

[0036] In the technical solution, when the green light of the traffic signal light is on, the driving state information of the vehicle behind the stop line in each preset period in a preset period is acquired, the driving state information includes average passing speed and average headway, then whether the vehicle behind the stop line is in an abnormal state is determined according to the average headway, when the vehicle behind the stop line is not in the abnormal state, the timing information of the traffic light in different running states is determined according to the average passing speed, and the timing information is sent to the signal machine to adjust the timing of the traffic signal light. In this way, the road passing efficiency is improved, the traffic resources are reasonably allocated, the congestion phenomenon is reduced, the timing information is accurately calculated, the timing information is adapted to the road running state, and the accuracy and effectiveness of the timing information are improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0038] Figure 1 is a flowchart of a traffic signal light timing method provided by the embodiments of the present application;

[0039] Figure 2 is a schematic diagram of the first monitoring point and the second monitoring point on the road provided by the embodiments of the present application;

[0040] Figure 3 is a block diagram of a traffic signal light timing device provided by the embodiments of the present application;

[0041] Figure 4 is a structural schematic diagram of an electronic device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail with reference to the drawings.

[0043] In the embodiments, a traffic signal light timing method is provided, Figure 1 is a flowchart of a traffic signal light timing method provided by the embodiments of the present application, as Figure 1 The method can include the following steps:

[0044] S101, if the green light signal in the traffic signal light is on, the driving state information of the vehicle behind the stop line in each preset period in a preset period is acquired.

[0045] The travel state information can include an average passing speed and an average headway.

[0046] The average passing speed refers to a parameter representing the speed of vehicle movement, and the average headway refers to a time interval between the head ends of two consecutive vehicles in a vehicle queue traveling on the same lane. For example, the average passing speed and the average headway of the vehicle behind the stop line can be determined by an RFID (Radio Frequency Identification) device. Since congestion does not occur at all times of a day, the congestion period of a day can be detected. For example, the preset period can be a congestion period such as a morning peak or an evening peak, specifically, 8:00-9:00 am or 6:00-8:00 pm. The preset period can be determined according to the actual scene. The preset period can be 1 month, or other time. For example, the congestion of the vehicle behind the stop line can be determined according to the travel state information of the vehicle behind the stop line, so as to determine the timing information of the traffic signal light on the road, so that the timing information is adapted to the road operating condition.

[0047] When the red light signal of the traffic signal light is on, the vehicle is in a queuing state, and the average passing speed can be small. The road operating condition determined according to the average passing speed is congestion, which is not accurate to the actual operating condition of the road. Based on this, when the green light signal of the traffic signal light is on, the average passing speed and the average headway of the vehicle on the road section are collected in real time by the RFID device, and the information is transmitted to the signal machine in real time. The signal machine uploads the information to the server to monitor the travel state of the vehicle. When the red light signal of the traffic signal light is on, the data collected by the RFID device is filtered.

[0048] S102, determining whether the vehicle behind the stop line is in an abnormal state according to the average headway.

[0049] For example, the abnormal state can include abnormal lane changing and abnormal failure. The scenario of abnormal lane changing can be that the vehicle changes lane due to emergency to avoid a vehicle or an obstacle appearing in front of the road, and the abnormal failure can be that the target vehicle fails or has an accident. When there is a vehicle in an abnormal state on the road, the vehicle behind will stop or change lane in an emergency. At this time, the average passing speed of the road determined will be small, and the road operating condition represented by the average passing speed is congestion, which is not accurate to the actual operating condition of the road. Based on this, the vehicle in the abnormal state and the vehicle not in the abnormal state are distinguished. For example, whether the vehicle behind the stop line is in an abnormal state can be determined according to the average headway.

[0050] S103, determining the timing information of the traffic signal light according to the average passing speed when the vehicle behind the stop line is not in an abnormal state.

[0051] The timing information of the traffic signal light refers to timing information of a green light signal. When the green light signal is on and it is determined that the vehicle behind the stop line is not in an abnormal state, the current road running condition can be represented according to the average passing speed at this time, for example, the average passing speed is low, which represents that the road running condition is congested, the average passing speed is high, which represents that the road running condition is smooth, and the like. Then, according to different road running conditions, the timing information of the traffic signal light is determined, and the timing information added to the original fixed timing information of the traffic signal light can also be determined. For example, the more congested the road is, the longer the added timing information is.

[0052] S104, sending the timing information to the signal machine to adjust the timing of the traffic signal light.

[0053] For example, the server can establish a communication connection with the signal machine, so that the server can send the timing information such as the number of seconds of passing to the signal machine, and the signal machine can send the timing information to the traffic signal light, so as to adjust the timing of the traffic signal light.

[0054] In the above technical solution, when the green light of the traffic signal light is on, the driving state information of the vehicle behind the stop line in each preset period in a preset period is obtained, and the driving state information includes: average passing speed and average headway; then, according to the average headway, it is determined whether the vehicle behind the stop line is in an abnormal state; when the vehicle behind the stop line is not in an abnormal state, the timing information of the traffic light under different running conditions is determined according to the average passing speed, and the timing information is sent to the signal machine to adjust the timing of the traffic signal light. In this way, the road passing efficiency is improved, so as to reasonably allocate traffic resources, reduce congestion, realize accurate calculation of the timing information, make the timing information adapt to the road running condition, and improve the accuracy and effectiveness of the timing information.

[0055] In a possible embodiment, the determining of the timing information of the traffic signal light according to the average passing speed comprises:

[0056] determining a target average headway of the vehicle behind the stop line according to the average passing speed, the target average headway including: a first average headway or a second average headway;

[0057] determining the timing information of the traffic signal light according to the target average headway;

[0058] The first average headway is the average headway of the vehicle at the first monitoring point, and the second average headway is the average headway of the vehicle at the second monitoring point. The first monitoring point and the second monitoring point are different points of the road behind the stop line along the driving direction.

[0059] Specifically, RFID (Radio Frequency Identification) devices can be used to obtain the first average headway of vehicles at the first monitoring point and the second average headway of vehicles at the second monitoring point. Specifically, RFID devices can be used to collect data on the time it takes for the current vehicle and the nearest vehicle directly behind it to pass through the first and second monitoring points, respectively, as well as the number of vehicles passing through the first and second monitoring points within one green light cycle. Then, the first average headway of vehicles behind the stop line at the first monitoring point and the second average headway of vehicles at the second monitoring point can be determined using the following formulas.

[0060]

[0061] Among them, the first average headway can be represented by H. t1 The second average headway can be represented by H. t2 This can be expressed as the time it takes for the nearest vehicle directly behind the current vehicle to pass the first monitoring point. To indicate, the first time can be used This can be expressed as the time it takes for the nearest vehicle directly behind the current vehicle to pass the second monitoring point. To indicate, the second time can be expressed as... Let i1 represent the total number of vehicles passing through the first monitoring point in one green light cycle, and i2 represent the total number of vehicles passing through the second monitoring point in one green light cycle.

[0062] The RFID devices can be installed at the first monitoring point and the second monitoring point, respectively. For example... Figure 2 The diagram shows the first and second monitoring points on the road. As can be seen, vehicles first pass the second monitoring point, then the first monitoring point, and finally the stop line. For example, several RFID devices can be installed in each of the four directions of the intersection; this application only uses two RFID devices in one direction as an example. Since vehicles closer to the traffic lights travel faster than those behind, the first monitoring point is closer to the stop line, resulting in a smaller average headway. The second monitoring point is farther from the stop line, resulting in a larger average headway. In this situation, if the average traffic speed is low, a longer traffic light timing can be achieved by setting the target average headway as the second average headway; conversely, a shorter traffic light timing can be achieved by setting the target average headway as the first average headway.

[0063] For example, if the target headway is determined as the second average headway, the timing information of the traffic signal corresponding to the target average headway is determined according to the corresponding relationship between the target average headway and the timing information. In this embodiment, the corresponding relationship between the target average headway and the timing information can be obtained through pre-experiment. The corresponding relationship can be determined according to the pre-experiment. The timing information is longer when the target average headway is larger, and the timing information is shorter when the target average headway is smaller. In this way, the timing information is accurately calculated, so that the timing information is adapted to the vehicle driving state, and the accuracy and effectiveness of the timing information control are improved, so that the traffic resources are reasonably allocated, and the occurrence of congestion is reduced.

[0064] In a possible embodiment, the target average headway of the vehicle behind the stop line is determined according to the average passing speed, including:

[0065] If the average passing speed is in the first target range, the target average headway is determined as the second average headway;

[0066] If the average passing speed is in the second target range, the target average headway is determined according to the average passing speed and the number of slow driving;

[0067] If the average passing speed is in the third target range, the target average headway is determined as the first average headway.

[0068] The first target range and the second target range can be set by human beings in advance. For example, if the current road speed limit is 60Km / h, the first target range can be set as 0-20Km / h, the second target range can be set as 20-40Km / h, and the third target range can be set as 40-60Km / h. When the green light is on and the vehicle is not in an abnormal state, the average passing speed in the first target range can represent that the current road running condition is congested, and the vehicle driving speed is slow. When the average passing speed is in the second target range, it can represent that the current road running condition is slow, and the vehicle driving speed is slow. If the average passing speed is in the third target range, it can represent that the current road running condition is smooth, and the vehicle driving speed is fast.

[0069] If the average passing speed is in the first target range, the traffic flow on the road is high at this time, and the green light passing time needs to be increased in order to reduce the occurrence of congestion. Because the vehicle close to the traffic signal passes faster than the vehicle behind, the first average headway can be smaller, and the second average headway can be larger. Therefore, the second average headway is determined as the target average headway, and the timing information of the traffic signal is determined according to the target average headway.

[0070] The number of slow driving times refers to the number of times that the average traffic speed is in the second target range. If the average traffic speed is in the second target range, it can be indicated that the traffic flow of the road is only high at some time periods (such as the morning peak), or it can be indicated that the traffic flow of the road is continuously high. It is necessary to further determine the traffic flow of the road according to the size of the number of slow driving times, and then determine the target average headway.

[0071] If the average traffic speed is in the third target range, at this time, the traffic flow of the road is less, at this time, the first average headway can be determined as the target average headway to determine the timing information of the traffic signal lamp. The timing information can also be determined as the fixed timing information.

[0072] In a possible embodiment, the determining the target average headway according to the average traffic speed and the number of slow driving times comprises:

[0073] If the number of slow driving times is greater than the number threshold, the target average headway is determined as the second average headway.

[0074] If the number of slow driving times is less than the number threshold, the target average headway is determined as the first average headway.

[0075] The number of slow driving times greater than the number threshold can indicate that the traffic flow of the road is continuously high in a day, at this time, the second average headway can be determined as the target average headway to determine the timing information of the traffic signal lamp. On the contrary, the number of slow driving times less than the number threshold can indicate that the traffic flow of the road is only high at some time periods (such as the morning peak and the evening peak), the first average headway can be determined as the target average headway to determine the timing information of the traffic signal lamp. The principle of taking the second average headway as the target headway and taking the first average headway as the target headway has been described above, and will not be repeated here. The number threshold can be determined according to the actual application scene, and the present disclosure does not set the number threshold here.

[0076] In a possible embodiment, the method further comprises:

[0077] In the case that the vehicle behind the stop line is in an abnormal state, the timing information of the traffic signal lamp is determined according to the first average headway.

[0078] When the position of the vehicle in the abnormal state is after the second monitoring point or before the first monitoring point, the server normally calculates the timing information. When the position of the vehicle in the abnormal state is between the first monitoring point and the second monitoring point, the vehicle behind the vehicle in the abnormal state can stop or detour, at this time, the number of vehicles behind the vehicle in the abnormal state passing through the second monitoring point will decrease, the second average headway will become larger, and the timing information determined according to the second average headway will be longer, so the first average headway can be determined as the target average headway to determine the timing information of the traffic signal light. In this way, when the vehicle is in an abnormal state, the timing information of the traffic signal light can be determined according to the first average headway, the accurate calculation of the timing information in the abnormal state is realized, the accuracy and effectiveness of the timing information are improved, so as to reasonably allocate traffic resources and reduce the occurrence of congestion.

[0079] In a possible embodiment, the determining whether the vehicle behind the stop line is in an abnormal state according to the average headway comprises:

[0080] If the first average headway and / or the second average headway is not empty and less than a target threshold, it is determined that the vehicle behind the stop line is not in an abnormal state.

[0081] On the contrary, if the first average headway and / or the second average headway is greater than the target threshold, it is determined that the vehicle is not in an abnormal state.

[0082] If the first average headway and / or the second average headway is not empty, it can indicate that there is a vehicle behind the vehicle. When the first average headway and / or the second average headway is less than the target threshold, it can indicate that the time difference of the vehicle behind the vehicle and the vehicle in front of the vehicle passing through the first monitoring point is small, and based on the above two conditions, it can be indicated that the vehicle is not in an abnormal state.

[0083] If the first average headway and / or the second average headway is greater than the target threshold, it can indicate that the time difference of the vehicle behind the vehicle and the vehicle in front of the vehicle passing through the first monitoring point and the second monitoring point is large, at this time, it can be indicated that the vehicle is in an abnormal state. For example, the target threshold can be determined according to the actual application scenario, which is not limited in the present disclosure.

[0084] In another possible embodiment, the obtaining the driving state information of the vehicle behind the stop line in each preset time period in a preset period further comprises:

[0085] Obtaining the passing speed, the first headway and the second headway of the vehicle behind the stop line at an interval time in each preset time period in a preset period.

[0086] fitting the passing speed, the first headway, and the second headway of the vehicle behind the stop line in each preset period within the preset period, to obtain a passing speed-time curve, a first headway-time curve, and a second headway-time curve;

[0087] According to the passing speed-time curve, the first headway-time curve, and the second headway-time curve, the average passing speed, the first average headway, and the second average headway of the vehicle behind the stop line in each preset period within the preset period are determined.

[0088] For example, the first time when a vehicle arrives at the first monitoring point and the second time when the vehicle arrives at the second monitoring point can be collected by an RFID device, and then the average passing speed of each vehicle between the first monitoring point and the second monitoring point can be determined by the following formula.

[0089] V=D / (t2-t1)

[0090] Wherein, the distance between the first monitoring point and the second monitoring point can be represented by D, the first time can be represented by t1, the second time can be represented by t2, and the average passing speed can be represented by V.

[0091] For example, the distance between the first monitoring point and the second monitoring point can be collected in advance by a distance sensor. The distance between the first monitoring point and the second monitoring point can also be determined by the RFID device at the first monitoring point and the RFID device at the second monitoring point, which is not limited in the present disclosure.

[0092] Wherein, the principle of obtaining the first headway and the second headway has been described above, and will not be repeated here. For example, the passing speed, the first headway, and the second headway at an interval of 1 minute in the morning peak or evening peak within a month or a quarter can be collected respectively, and then after the data is fitted and the discrete points of the fitted curve are excluded, the passing speed-time curve, the first headway-time curve, and the second headway-time curve are obtained. According to the corresponding discrete curves, the average passing speed of the vehicle behind the stop line in each preset period within the preset period, and the first average headway and the second average headway of the vehicle at the first monitoring point and the second monitoring point can be determined. In this way, the inaccuracy of the calculation result caused by the inaccuracy of a single data is avoided, and the accuracy of the fitting calculation result is improved.

[0093] In the embodiment, a traffic signal lamp timing device is provided, Figure 3 is a block diagram of a split-screen display device provided by the embodiment of the present application, as Figure 3 The device 20 can include:

[0094] The acquisition module 210 is configured to acquire driving state information of a vehicle behind a stop line in each preset time period in a preset period if a green light signal in a traffic signal light is on, the driving state information including an average passing speed and an average headway.

[0095] The first determination module 220 is configured to determine whether the vehicle behind the stop line is in an abnormal state according to the average headway.

[0096] The second determination module 230 is configured to determine timing information of the traffic signal light according to the average passing speed when the vehicle behind the stop line is not in the abnormal state.

[0097] The sending module 240 is configured to send the timing information to a signal machine to adjust the timing of the traffic signal light.

[0098] Optionally, the second determination module 230 includes:

[0099] The first determination submodule is configured to determine a target average headway of the vehicle behind the stop line according to the average passing speed, the target average headway including a first average headway or a second average headway.

[0100] The second determination submodule is configured to determine the timing information of the traffic signal light according to the target average headway.

[0101] The first average headway is an average headway of the vehicle at a first monitoring point, and the second average headway is an average headway of the vehicle at a second monitoring point, the first monitoring point and the second monitoring point being different points on a road behind the stop line along a driving direction.

[0102] Optionally, the first determination submodule includes:

[0103] The third determination submodule is configured to determine that the target average headway is the second average headway if the average passing speed is within a first target range.

[0104] The fourth determination submodule is configured to determine the target average headway according to the average passing speed and a number of slow-downs if the average passing speed is within a second target range.

[0105] The fifth determination submodule is configured to determine that the target average headway is the first average headway if the average passing speed is within a third target range.

[0106] Optionally, the fourth determination submodule includes:

[0107] A sixth determining sub-module is configured to determine the target average headway as the second average headway if the number of times of slow driving is greater than the number threshold.

[0108] A seventh determining sub-module is configured to determine the target average headway as the first average headway if the number of times of slow driving is less than the number threshold.

[0109] Optionally, the device 20 further comprises:

[0110] A third determining module is configured to determine timing information of a traffic signal according to the first average headway if the vehicle behind the stop line is in an abnormal state.

[0111] Optionally, the first determining module 220 is further configured to determine that the vehicle is not in an abnormal state if the first average headway and / or the second average headway is not empty and less than a target threshold.

[0112] Optionally, the acquisition module 210 comprises:

[0113] An acquisition sub-module is configured to acquire a passing speed, a first headway and a second headway of a vehicle behind a stop line at an interval time in each preset time period within a preset period.

[0114] A fitting sub-module is configured to fit the passing speed, the first headway and the second headway of the vehicle behind the stop line in each preset time period within the preset period, respectively, to obtain a passing speed-time curve, a first headway-time curve and a second headway-time curve.

[0115] An eighth determining sub-module is configured to determine the average passing speed, the first average headway and the second average headway of the vehicle behind the stop line in each preset time period within the preset period according to the passing speed-time curve, the first headway-time curve and the second headway-time curve.

[0116] Figure 4 A structure schematic diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 8. Figure 4 As shown in FIG. 8, the electronic device 800 comprises:

[0117] a processor 801 and a memory 802;

[0118] The memory 802 stores computer instructions;

[0119] The processor 801 executes the computer instructions stored in the memory 802, so that the processor 801 performs the traffic signal timing method implemented by the terminal device, the central terminal or the server.

[0120] The specific implementation process of the processor 801 can refer to the method embodiments described above, which have similar implementation principles and technical effects, and will not be described here.

[0121] Optionally, the electronic device 800 further includes a communication component 803. The processor 801, the memory 802, and the communication component 803 can be connected through the bus 804.

[0122] The embodiments of the present application further provide a computer readable storage medium, the computer readable storage medium stores computer instructions, and the computer instructions are executed by a processor to implement the traffic signal timing method.

[0123] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. For example, the application is not limited to the precise structures described and shown in the drawings, and it can be readily implemented in various ways. The true scope and spirit of the application are indicated by the following claims. The specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0124] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is indicated only by the appended claims.

Claims

1. A traffic signal timing method, characterized in that, The method includes: If the green light signal in the traffic signal is turned on, the driving status information of vehicles behind the stop line in each preset time period within the preset cycle is obtained. The driving status information includes: average traffic speed and average headway. Based on the average headway, determine whether the vehicle behind the stop line is in an abnormal state; When the vehicles behind the stop line are not in an abnormal state, the timing information of the traffic lights is determined based on the range of the average traffic speed. The timing information is sent to the traffic signal controller to adjust the timing of the traffic lights; Determining the traffic light timing information based on the range of average traffic speed includes: The target average headway of vehicles behind the stop line is determined based on the average traffic speed. The target average headway includes either a first average headway or a second average headway. The timing information of the traffic lights is determined based on the target average headway. Wherein, the first average headway is the average headway of the vehicle at the first monitoring point, the second average headway is the average headway of the vehicle at the second monitoring point, and the first monitoring point and the second monitoring point are different points on the road behind the stop line along the direction of travel.

2. The method according to claim 1, characterized in that, Determining the target average headway of vehicles behind the stop line based on the average traffic speed includes: If the average traffic speed is within the first target range, then the target average headway is determined to be the second average headway. If the average traffic speed is within the second target range, then the target average headway is determined based on the average traffic speed and the number of slow-moving traffic events. If the average traffic speed is within the third target range, then the target average headway is determined to be the first average headway.

3. The method according to claim 2, characterized in that, Determining the target average headway based on the average traffic speed and the number of slow-moving traffic events includes: If the number of slow-moving incidents is greater than the number threshold, then the target average headway is determined to be the second average headway. If the number of slow-moving incidents is less than the number of incidents threshold, then the target average headway is determined to be the first average headway.

4. The method according to claim 1, characterized in that, The method further includes: When there is an abnormal condition of a vehicle behind the stop line, the timing information of the traffic lights is determined based on the first average headway.

5. The method according to claim 1, characterized in that, The step of determining whether the vehicle behind the stop line is in an abnormal state based on the average headway includes: If the first average headway and / or the second average headway are not empty and are less than the target threshold, then it is determined that the vehicle behind the stop line is in an abnormal state.

6. The method according to claim 1, characterized in that, The step of obtaining the driving status information of vehicles behind the stop line for each preset time period within a preset period includes: Get the speed of vehicles behind the stop line, the first headway, and the second headway at intervals within each preset time period within a preset cycle; The passing speed, the first headway, and the second headway of vehicles behind the stop line are fitted to each preset time period within a preset period to obtain the passing speed-time curve, the first headway-time curve, and the second headway-time curve. Based on the traffic speed-time curve, the first headway-time curve, and the second headway-time curve, the average traffic speed, the first average headway, and the second average headway of vehicles behind the stop line are determined for each preset time period within a preset cycle.

7. A traffic signal timing device, characterized in that, include: The acquisition module is used to acquire the driving status information of vehicles behind the stop line for each preset time period within a preset cycle if the green light signal in the traffic signal is turned on. The driving status information includes: average traffic speed and average headway. The first determining module is used to determine whether the vehicle behind the stop line is in an abnormal state based on the average headway. The second determining module is used to determine the timing information of the traffic lights based on the range of the average traffic speed when the vehicles behind the stop line are not in an abnormal state. A sending module is used to send the timing information to the traffic signal controller to adjust the timing of the traffic lights; The second determining module includes: The first determining submodule is used to determine the target average headway of vehicles behind the stop line based on the average traffic speed. The target average headway includes: a first average headway or a second average headway. The second determining submodule is used to determine the timing information of the traffic lights based on the target average headway. Wherein, the first average headway is the average headway of the vehicle at the first monitoring point, the second average headway is the average headway of the vehicle at the second monitoring point, and the first monitoring point and the second monitoring point are different points on the road behind the stop line along the direction of travel.

8. An electronic device comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it causes the electronic device to implement the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 6.

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