Traffic signal system based on buried signal light

Abstract

The embodiment of the application provides a traffic signal lamp system based on a buried signal lamp; the traffic signal lamp system of the embodiment of the application comprises a master controller, intersection traffic signal lamps and a buried signal lamp in addition, wherein the buried signal lamp is buried in a lane switching area of a road, is used for guiding the flow direction of a switching front lane and a switching rear lane of the same traffic direction and prompting the start and stop of a vehicle on the switching rear lane according to the traffic direction of the corresponding road; the buried signal lamp can prompt the traffic condition of the front road, and can also provide clear and effective drainage for the vehicle when the number of lanes changes, greatly improves the clarity and richness of the indication content, and helps to improve the driving safety of the road.

Description

[0001] This application is a divisional application, the original application's application number is: "202310443869.2", the application date is: "2023 / 04 / 24", and the invention name is: "Traffic signal system and control method of traffic signal system". TECHNICAL FIELD

[0002] The present application relates to the field of automation control, in particular to a traffic signal system and a control method of the traffic signal system. BACKGROUND

[0003] With the development of economy and technology and the popularization of various types of transportation tools, how to improve the convenience and efficiency of travel has gradually become the focus of attention. As an indispensable part of road traffic, how to set and control traffic signals is of great significance to improve the convenience and efficiency of travel.

[0004] The existing traffic signal, also known as traffic light, is a traffic control device set at the intersection or other special places. It can allocate road traffic right to vehicles and pedestrians through alternating light color signals such as red, yellow and green three-color light signals, and control their movement and turning. In the prior art, the traffic signal is generally set on the roadside or above the road.

[0005] In the research and use of the prior art, the inventor of the present application found that when the front vehicle is large in size, such as a large truck or a mud truck, the rear vehicle driver's line of sight is often blocked, so that the indication of the traffic signal on the front road cannot be clearly seen, resulting in poor indication effect of the traffic signal, which is not conducive to road traffic safety. Moreover, merely controlling the movement and turning of vehicles is not enough to meet the needs of the increasingly complex road traffic system, and the clarity and richness of the indication content need to be improved. SUMMARY

[0006] The traffic signal system and the control method of the traffic signal system provided by the embodiments of the present application can improve the indication effect of the traffic signal and improve the clarity and richness of the indication content, which is conducive to improving road traffic safety.

[0007] The traffic signal system provided by the embodiments of the present application is arranged at a traffic intersection, the traffic intersection includes a plurality of roads and a road intersection where the plurality of roads meet, and the traffic signal system includes:

[0008] A master controller for controlling the intersection traffic signal and the buried signal light;

[0009] The intersection traffic signal lamp is arranged at the middle of the road intersection and is connected with the master controller, and is used for indicating the stop and turning of vehicles under the control of the master controller.

[0010] The buried signal lamp is buried in the lane switching area of the road, and is used for guiding the flow direction of the switching front lane and the switching rear lane of the same traffic direction and prompting the stop of the vehicle on the switching rear lane under the control of the master controller according to the traffic direction of the corresponding road.

[0011] Optionally, in some embodiments of the present application, the switching front lane comprises a switching front first direction lane and a switching front second direction lane; the switching front first direction lane and the switching front second direction lane have a switching front interval line therebetween; the switching rear lane comprises a switching rear first direction lane, a switching rear second direction lane and a switching rear tidal lane arranged between the switching rear first direction lane and the switching rear second direction lane, the switching rear tidal lane can switch the traffic direction according to the traffic flow demand; the switching rear first direction lane and the switching rear tidal lane have a switching rear first interval line therebetween, and the switching rear second direction lane and the switching rear tidal lane have a switching rear second interval line therebetween; the buried signal lamp comprises a first guide signal lamp group connecting the end point of the switching front interval line and the start point of the switching rear first interval line, and a second guide signal lamp group connecting between the end point of the switching front interval line and the start point of the switching rear second interval line.

[0012] Optionally, in some embodiments of the present application, when the switching rear tidal lane is consistent with the traffic direction of the switching rear second direction lane, the first guide signal lamp group is lit, and the second guide signal lamp group is extinguished; when the switching rear tidal lane is consistent with the traffic direction of the switching rear first direction lane, the first guide signal lamp group is extinguished, and the second guide signal lamp group is lit.

[0013] Optionally, in some embodiments of the present application, the first guide signal lamp group comprises a first guide signal left lamp group close to the switching rear first direction lane and a first guide signal right lamp group close to the switching rear tidal lane; the first guide signal lamp group being lit specifically comprises:

[0014] When the intersection traffic signal lamp indicates that the switching rear first direction lane is for passing, the first guide signal left lamp group is green in color;

[0015] When the intersection traffic signal lamp indicates that the switching rear first direction lane is for stopping, the first guide signal left lamp group is red in color;

[0016] When the intersection traffic signal indicates that the post-switch second direction lane and the post-switch tidal lane are open, the first guidance signal right light group is green;

[0017] When the intersection traffic signal indicates that the post-switch second direction lane and the post-switch tidal lane are closed, the first guidance signal right light group is red.

[0018] Optionally, in some embodiments of the present application, when the first guidance signal light group is on, and the post-switch first direction lane is about to change from closed to open, the first guidance signal left light group gradually changes from red to green along the driving direction of the post-switch first direction lane;

[0019] When the first guidance signal light group is on, and the post-switch first direction lane changes from open to closed, the first guidance signal left light group simultaneously changes from green to red;

[0020] When the first guidance signal light group is on, and the post-switch second direction lane is about to change from closed to open, the first guidance signal right light group gradually changes from red to green along the driving direction of the post-switch second direction lane;

[0021] When the first guidance signal light group is on, and the post-switch second direction lane changes from open to closed, the first guidance signal right light group simultaneously changes from green to red.

[0022] Optionally, in some embodiments of the present application, the second guidance signal light group includes a second guidance signal left light group near the post-switch tidal lane and a second guidance right light group near the post-switch second direction lane; the second guidance signal light group being on specifically includes:

[0023] When the intersection traffic signal indicates that the post-switch first direction lane and the post-switch tidal lane are open, the second guidance signal left light group is green;

[0024] When the intersection traffic signal indicates that the post-switch first direction lane and the post-switch tidal lane are closed, the second guidance signal left light group is red.

[0025] When the intersection traffic signal indicates that the post-switch second direction lane is open, the second guidance right light group is red;

[0026] When the intersection traffic signal indicates that the post-switch second direction lane is closed, the second guidance right light group is green.

[0027] Optionally, in some embodiments of the present application, when the second guide signal light group is lit, and the first direction lane after switching is about to change from stop to pass, the second guide signal left light group gradually changes from red to green along the driving direction of the first direction lane after switching;

[0028] When the second guide signal light group is lit, and the first direction lane after switching changes from pass to stop, the second guide signal left light group simultaneously changes from green to red;

[0029] When the second guide signal light group is lit, and the second direction lane after switching is about to change from stop to pass, the second guide signal right light group gradually changes from red to green along the driving direction of the second direction lane after switching;

[0030] When the second guide signal light group is lit, and the second direction lane after switching changes from pass to stop, the second guide signal right light group simultaneously changes from green to red.

[0031] Optionally, in some embodiments of the present application, when the tidal lane after switching changes the driving direction, the first guide signal left light group of the first guide signal light group is green, the first guide signal right light group of the first guide signal light group is red, the second guide signal left light group of the second guide signal light group is red, and the second guide signal right light group of the second guide signal light group is green, so as to avoid vehicles driving into the tidal lane after switching.

[0032] The traffic signal light system of the embodiments of the present application can be arranged at a traffic intersection including multiple roads and a road intersection of the multiple roads. In addition to including a master controller and intersection traffic signal lights, the traffic signal light system further includes a buried signal light. The buried signal light is buried in a lane switching area of a road, and is used to guide the flow direction of a lane before switching and a lane after switching in the same driving direction according to the driving direction of a corresponding road, and to prompt the stop and start of a vehicle on the lane after switching. Since the buried signal light can prompt the driving condition of a front road, and can also provide clear and effective guidance for a vehicle on a lane when the number of lanes changes, the traffic signal light system and the control method can greatly improve the indication effect, increase the clarity and richness of the indication content, and help to improve the driving safety of the road, compared with the prior art. In addition, since the arrangement of the buried signal light is relatively simple and has a low implementation cost, the applicability is relatively strong, and it is relatively easy to promote. BRIEF DESCRIPTION OF DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the traffic signal system provided in the embodiments of this application;

[0035] Figure 2 This is a schematic diagram of a traffic signal system provided in an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the structure of the buried signal light provided in the embodiment of this application;

[0037] Figure 4 This is a schematic diagram of a scenario for the buried signal light provided in an embodiment of this application;

[0038] Figure 5 This is another scenario diagram of the buried signal light provided in the embodiments of this application;

[0039] Figure 6 This is an example diagram of the buried signal light assembly provided in the embodiments of this application;

[0040] Figure 7 This is another scenario diagram of the buried signal light provided in the embodiments of this application;

[0041] Figure 8 This is a flowchart of a control method for a traffic signal system provided in an embodiment of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] This application provides a traffic signal light system and a control method for the traffic signal light system. These will be described in detail below.

[0044] A traffic signal system is installed at a traffic intersection, which includes multiple roads and road intersections where multiple roads intersect. For example... Figure 1 As shown, the traffic signal system includes a main controller 001, intersection traffic lights 002, intersection lane traffic lights 003, and buried traffic lights 004, as detailed below:

[0045] a master controller 001, configured to control a road intersection traffic signal 002, a road intersection lane signal 003 and a buried signal 004;

[0046] the road intersection traffic signal 002 is arranged at the middle of the road intersection, and is connected with the master controller 001, and is configured to indicate the stop and go (i.e. pass or stop) and turn of the vehicle under the control of the master controller 001; for example, the road intersection traffic signal 002 can be a traffic light, wherein the red light is used to indicate the stop of the vehicle (i.e. prohibit the pass), the green light is used to indicate the pass of the vehicle (i.e. allow the pass), and the yellow light is used to indicate the warning.

[0047] the road intersection lane signal 003 is arranged above the road, and is configured to indicate the pass direction of the corresponding road under the control of the master controller 001; for example, the road intersection lane signal 003 can indicate whether the pass direction of the current lane is straight, left turn, right turn or U-turn, etc. In particular, for the tidal lane, the corresponding road intersection lane signal 003 is generally needed to be arranged to indicate the current pass direction of the tidal lane.

[0048] the buried signal 004 is buried in the lane switching area of the road, and is configured to guide the flow direction of the switching front lane and the switching rear lane of the same pass direction, and prompt the stop and go of the vehicle on the switching rear lane under the control of the master controller 001.

[0049] The lane switching area refers to the transition area when the number of lanes changes, and the vehicle needs to switch from the current lane to the other lane in front. For the convenience of description, in the embodiment of the present application, the current lane is referred to as the switching front lane, and the other lane in front is referred to as the switching rear lane.

[0050] For example, referring to Figure 2 , the northward pass lane on the south road changes from 4 lanes to 5 lanes, the switching front lane is lane 1, lane 2, lane 3 and lane 4, and the switching rear lane is lane 1', lane 2', lane 3', lane 4' and lane 5', wherein the switching rear lane 2' is a tidal lane. If the tidal lane is currently a left turn lane, then the vehicle on lane 1 can switch to lane 2' at this time, and the vehicle needs a transition area to travel from lane 1 to lane 2', such as Figure 2 the shaded part, which is the lane switching area.

[0051] Optionally, the setting position of the main controller 001, and the number and setting position of the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 can be set according to the requirements of actual application. For example, referring to Figure 2 In the middle of the intersection, an intersection traffic signal lamp 002 can be arranged, and then above the roads in different directions such as east, west, south and north, an intersection lane signal lamp 003 can be arranged respectively, and the buried signal lamp 004 (i.e. 0041 and 0042 in the figure) can be buried in the ground of the road lane switching area according to the requirements of the road.

[0052] It should be noted that, for the convenience of description, in the following description, only the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 in the south direction are described, and it should be understood that the same can be applied to the roads in other directions. Figure 2

[0053] Optionally, the main controller 001 and the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 can be connected by cable or by wireless signal.

[0054] Optionally, the main controller 001 can be independently controlled, or can be controlled according to the instructions issued by the central controller such as the traffic control center, that is, the control mode of the main controller 001 can be as follows:

[0055] Obtaining the specific traffic condition of the current road, generating a control signal according to the preset data and the specific traffic condition of the current road, and then controlling the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 respectively according to the control signal.

[0056] Or, information input by maintenance personnel can also be received, a control signal is generated according to the input information, and then the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 are controlled respectively according to the control signal.

[0057] Or, instructions issued by the central controller such as the traffic control center can also be received, a control signal is generated according to the received instructions, and then the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004 are controlled respectively according to the control signal, and so on.

[0058] The preset data can include the lighting mode, lighting time and / or detection time of the intersection traffic signal lamp 002, the intersection lane signal lamp 003 and the buried signal lamp 004, and the preset data can be set by maintenance personnel according to the requirements of actual application, which will not be described here.

[0059] ​The control method of the main controller 001 can be selected according to the needs of the actual application. For example, under normal circumstances, it can receive instructions from the central controller, such as the traffic control center, and control according to the instructions. In special circumstances, such as when the traffic control center network crashes or cannot receive instructions from the traffic control center, the controller 001 can independently control according to preset data and the specific traffic conditions of the current road, or even be directly controlled by the information input by maintenance personnel, and so on.

[0060] Optionally, the lane before switching may include a first direction lane and a second direction lane before switching, wherein there is a lane spacing line between the first direction lane and the second direction lane before switching.

[0061] Similarly, the switched lane may include a switched first-direction lane, a switched second-direction lane, and a switched tidal flow lane located between the switched first-direction lane and the switched second-direction lane. The switched tidal flow lane can switch its direction of travel according to traffic flow demand. A switched first-direction lane and a switched tidal flow lane are separated by a switched first interval line, and a switched second-direction lane and a switched tidal flow lane are separated by a switched second interval line.

[0062] The buried signal light 004 includes a first guide signal light group connecting the end point of the pre-switching interval line and the start point of the post-switching first interval line, and a second guide signal light group connecting the end point of the pre-switching interval line and the start point of the post-switching second interval line.

[0063] For example, with Figure 2 Taking the scenario in the example, Figure 2 Before the lane change, the first directional lane is lane 1 (left turn lane), and before the lane change, the second directional lane is lane 2. After the lane change, the first directional lane is lane 1' (left turn lane), and after the lane change, the second directional lane is lane 3'. After the lane change, the tidal flow lane is lane 2'. There is a pre-change interval line between lane 1 and lane 2, a post-change interval line between lane 1' and lane 2', and a post-change interval line between lane 2' and lane 3'. At this time, a first guide light group 0041 and a second guide light group 0042 can be set in the lane change area. The first guide light group 0041 is used to connect the end point of the pre-change interval line and the beginning point of the post-change first interval line, while the second guide light group 0042 is used to connect the end point of the pre-change interval line and the beginning point of the post-change second interval line.

[0064] Optionally, in specific implementation, the buried signal light 004 can adopt appropriate light source and light body according to the actual application requirements. For example, in order to maximize its service life and save energy, LED (Light Emitting Diode) can be used as the light source, and in order to make it sturdy, durable, waterproof, dustproof, pressure-resistant and corrosion-resistant, its light body can be made of die-cast aluminum or stainless steel, and so on.

[0065] Optionally, for ease of installation and maintenance, a pre-embedded part matching the buried signal light 004 can be buried at the location where the buried signal light 004 needs to be installed, and then the buried signal light 004 can be installed. The pre-embedded part can be made of metal or plastic, and the specific choice can be made according to the actual application requirements, which will not be elaborated here.

[0066] Optionally, the buried signal light 004 can be connected to a dedicated cable for power supply, or it can be self-powered by solar energy, i.e. Figure 3 As shown, the buried signal light 004 may also include a solar power supply device 0043, as detailed below:

[0067] The solar power supply device 0043 is used to absorb solar energy and convert it into electrical energy, which is then used to supply the light groups in the buried signal light 004, such as the first guide signal light group 0041 and the second guide signal light group 0042.

[0068] Specifically, the buried traffic light 004 guides the flow of traffic in the same direction of travel before and after a lane change, based on the corresponding road's traffic direction, in the following ways:

[0069] (1) When the switching tidal lane is in the same direction of travel as the switching first direction lane, the first guide signal light group is turned off and the second guide signal light group is turned on.

[0070] For example, taking the switched tidal flow lane as lane 2' and the switched first-direction lane as lane 1' as an example, then... Figure 4 As shown, when lane 2' and lane 1' have the same direction of travel, i.e., both are left-turn lanes, the first guide signal light group 0041 is turned off, and the second guide signal light group 0042 is illuminated. At this time, vehicles traveling in lane 1 (i.e., the lane in the first direction before the switch) can enter lane 2' under the guidance of the illuminated second guide signal light group 0042.

[0071] (2) When the traffic direction of the tidal lane after the switch is consistent with that of the second direction lane after the switch, the first guide signal light group is lit and the second guide signal light group is turned off.

[0072] For example, taking the switched tidal flow lane as lane 2' and the switched second-direction lane as lane 3' as an example, then... Figure 5 As shown, when lane 2' and lane 3' travel in the same direction, i.e., both are straight-ahead lanes, the first guide signal light group 0041 illuminates, and the second guide signal light group 0042 turns off. At this time, vehicles traveling in lane 2 (i.e., the second-direction lane before the switch) can enter lane 2' under the guidance of the illuminated first guide signal light group 0041.

[0073] It should be noted that existing lane-changing areas lack clear markings or guide lines, and the direction of traffic in tidal flow lanes is variable. If drivers fail to see or are unable to see the current direction of traffic in the tidal flow lane, they often mistakenly enter the wrong lane, affecting their travel. More seriously, this can lead to traffic accidents due to temporary lane changes, endangering life and property. This application addresses this by installing buried signal lights 004 in the lane-changing area. Using the illumination of the first guide signal light group 0041 or the second guide signal light group 0042, a clear, obvious, and easily understood warning signal and guide line is formed in the lane-changing area. This guides vehicles in the previous lane to enter the new lane, which has the same direction of traffic as the previous lane. For example, it guides vehicles that were in a left-turn lane to enter the new left-turn lane, vehicles that were in a straight lane to enter the new straight lane, vehicles that were in a right-turn lane to enter the new right-turn lane, and so on. This significantly reduces the probability of vehicles mistakenly entering the wrong lane, helping to reduce traffic accidents and protect life and property.

[0074] Optionally, to avoid situations where the driver of a vehicle behind is unable to see the traffic light signals due to the large size of the vehicle in front, as described in the previous embodiment, the buried traffic light 004 can also indicate the movement of vehicles in the following lane after switching lanes. For example, it can be as follows:

[0075] The buried traffic light 004 is used to indicate the traffic status of the corresponding lane after the lane has been switched, based on the traffic signal 002 at the intersection.

[0076] For example, if traffic light 002 at the intersection indicates that a certain lane is open after a switch (i.e., the direction of travel in that lane is permitted, such as a green light), then the underground traffic light 004 indicates that the lane is open after a switch (i.e., the direction of travel in that lane is permitted); if traffic light 002 at the intersection indicates that a certain lane is closed after a switch (i.e., the direction of travel in that lane is prohibited, such as a red light), then the underground traffic light 004 indicates that the lane is closed after a switch (i.e., the direction of travel in that lane is prohibited), and so on.

[0077] The indication of the passing situation of the switched lane by the intersection traffic signal lamp 002 can be obtained by directly communicating with the intersection traffic signal lamp 002 or by communicating with the master 001. The specific method can be determined according to the actual application requirement, and will not be repeated here.

[0078] Optionally, the buried signal lamp 004 can have various implementation modes for indicating the passing situation. For example, different colors of light can be used to represent the passing situation, such as red for stop, green for passing, yellow for warning, etc. At the same time, different shapes of patterns can be formed by the lamp groups to represent different passing directions, such as straight arrow, left turn arrow, right turn arrow, and U-turn arrow, etc. Of course, different positions of the lamp groups can also be used to represent the corresponding lanes, etc., which will be further illustrated below.

[0079] For example, referring to Figure 6 Taking the first guide signal lamp group including the first guide signal left lamp group 00411 close to the switched first direction lane and the first guide signal right lamp group 00412 close to the switched tidal lane as an example, the "first guide signal lamp group is lit" in "when the passing direction of the switched tidal lane is consistent with the passing direction of the switched second direction lane, the first guide signal lamp group 0041 is lit, and the second guide signal lamp group 0042 is extinguished" can be specifically:

[0080] When the intersection traffic signal lamp 002 indicates that the switched first direction lane is passing, for example, the passing direction of lane 1' is allowed to pass, the light color of the first guide signal left lamp group 00411 is green.

[0081] When the intersection traffic signal lamp 002 indicates that the switched first direction lane is stopped, for example, the passing direction of lane 1' is prohibited to pass, the light color of the first guide signal left lamp group 00411 is red.

[0082] When the intersection traffic signal lamp 002 indicates that the switched second direction lane and the switched tidal lane are passing, for example, the passing directions of lane 3' and lane 2' are allowed to pass, the light color of the first guide signal right lamp group 00412 is green.

[0083] When the intersection traffic signal lamp indicates that the switched second direction lane and the switched tidal lane are stopped, for example, the passing directions of lane 3' and lane 2' are prohibited to pass, the light color of the first guide signal right lamp group 00412 is red.

[0084] Optionally, in order to facilitate the vehicle driver to better predict the start and stop of the vehicle, the light color of the first guide signal left lamp group 00411 and the first guide signal right lamp group 00412 can also be changed according to the countdown of the traffic light, for example, it can be as follows:

[0085] When the first guide signal lamp group 0041 is lit, and the first direction lane after switching will change from stop to traffic, the light color of the first guide signal left lamp group 00411 gradually changes from red to green along the driving direction of the first direction lane after switching; for example, when the first direction lane after switching is stop, the light color of the first guide signal left lamp group 00411 is all red, 10 seconds before the first direction lane after switching is converted to traffic, the light color of the first guide signal left lamp group 00411 gradually changes from red to green along the driving direction of the first direction lane after switching, and finally when the first direction lane after switching is traffic, the light color of the first guide signal left lamp group 00411 is all green. In order to make the vehicle start faster, the light color gradually changes from red to green to prompt the vehicle user to prepare for traffic.

[0086] When the first guide signal lamp group 0041 is lit, and the first direction lane after switching such as lane 1' changes from traffic to stop, the light color of the first guide signal left lamp group 00411 changes from green to red at the same time. Because the vehicle user generally operates based on the front vehicle or the intersection traffic signal when the vehicle is stopped, therefore, no gradual change operation is needed for the light color here.

[0087] When the first guide signal lamp group 0041 is lit, and the second direction lane after switching such as lane 3' will change from stop to traffic, the light color of the first guide signal right lamp group 00412 gradually changes from red to green along the driving direction of the second direction lane after switching.

[0088] When the first guide signal lamp group 0041 is lit, and the second direction lane after switching such as lane 3' changes from traffic to stop, the light color of the first guide signal right lamp group 00412 changes from green to red at the same time.

[0089] Similar to the first guide signal lamp group 0041, as Figure 6 The second guide signal lamp group 0042 can also include multiple lamp groups, for example, it can include the second guide signal left lamp group 00421 close to the second direction lane after switching and the second guide right lamp group 00422 close to the second direction lane after switching; at this time, "the second guide signal lamp group 0042 is lit" in "when the traffic direction of the second direction lane after switching is consistent with the traffic direction of the first direction lane after switching, the first guide signal lamp group 0041 is extinguished, and the second guide signal lamp group 0042 is lit" can be specifically:

[0090] When the intersection traffic signal 002 indicates that the post-switch first direction lane and the post-switch tidal lane are in passing, such as the passing direction of lane 1' and lane 2' is allowed to pass, the second guide signal left light group 00421 is green in color.

[0091] When the intersection traffic signal 002 indicates that the post-switch first direction lane and the post-switch tidal lane are in stopping, such as the passing direction of lane 1' and lane 2' is forbidden to pass, the second guide signal left light group 00421 is red in color.

[0092] When the intersection traffic signal 002 indicates that the post-switch second direction lane is in passing, such as the passing direction of lane 3' is allowed to pass, the second guide right light group 00422 is red in color.

[0093] When the intersection traffic signal 002 indicates that the post-switch second direction lane is in stopping, such as the passing direction of lane 3' is forbidden to pass, the second guide right light group 00422 is green in color.

[0094] Optionally, in order to facilitate the vehicle driver to better predict the start and stop of the vehicle, the light color of the second guide signal left light group 00421 and the first guide signal right light group 00422 can also change according to the countdown of the traffic light, for example, as follows:

[0095] When the second guide signal light group 0042 is lit, and the post-switch first direction lane such as lane 1' is about to change from stopping to passing, the light color of the second guide signal left light group 00421 gradually changes from red to green along the driving direction of the post-switch first direction lane.

[0096] When the second guide signal light group is lit, and the post-switch first direction lane such as lane 1' changes from passing to stopping, the light color of the second guide signal left light group 00421 changes from green to red at the same time.

[0097] When the second guide signal light group 0042 is lit, and the post-switch second direction lane such as lane 3' is about to change from stopping to passing, the light color of the second guide signal right light group 00422 gradually changes from red to green along the driving direction of the post-switch second direction lane.

[0098] When the second guide signal light group 0042 is lit, and the post-switch second direction lane such as lane 3' changes from passing to stopping, the light color of the second guide signal right light group 00422 changes from green to red at the same time.

[0099] Wherein, "about to change from stop to go" refers to the switching time of "stop" and "go", such as the switching time interval of "red light" and "green light" is less than a preset threshold, wherein the threshold can be set according to the actual application requirements, for example, it can be set to 10 seconds or 20 seconds, etc.

[0100] Optionally, "about to change from stop to go" can be determined by detecting or communicating with the intersection traffic signal lamp 002, or the current traffic situation can also be obtained from the host 001, and the traffic situation is determined according to the obtained traffic situation. The specific way can be selected according to the actual application requirements, which is not described here.

[0101] Optionally, when the switching direction of the switching tidal lane is changed, such as from straight to left turn, or from left turn to straight, or from straight to right turn, or from right turn to straight, in order to avoid vehicles entering the switching tidal lane and causing unnecessary trouble, the buried signal lamp 004 can also be used for warning, such as the light color can be set to yellow, or the light color of the left and right different lamp groups can also be used for warning, that is, specifically as follows:

[0102] When the switching direction of the switching tidal lane is changed, the first guide signal left lamp group 00411 of the first guide signal lamp group 0041 is green, and the first guide signal right lamp group 00412 of the first guide signal lamp group 0041 is red; the second guide signal left lamp group 00421 of the second guide signal lamp group 0042 is red, and the second guide signal right lamp group 00422 of the second guide signal lamp group 0042 is green, so as to avoid vehicles entering the switching tidal lane, etc.

[0103] It should be noted that in the embodiments of the present application, only the left turn lane, the tidal lane and the straight lane are taken as examples for description, and it should be understood that, as shown in Figure 7 The tidal lane can also be provided beside the right turn lane, and the buried signal lamp 004 can also be embedded in the lane switching area for the tidal lane, and the setting mode is similar to the above-mentioned embodiments, which is not described here.

[0104] Optionally, in order to better guide other lanes, the buried signal lamp 004 can also be set in the lane switching area according to the above-mentioned mode; in addition, it should be noted that in addition to the large and complex intersection with the tidal lane, the buried signal lamp 004 can also be set according to the above-mentioned mode for ordinary intersections, and the specific embodiments can refer to the previous embodiments, which are not described here.

[0105] As can be seen from the above, the traffic signal system of this application embodiment can be set up at traffic intersections containing multiple roads and the intersection of multiple roads. In addition to the main controller 001, intersection traffic signal lights 002 and intersection lane signal lights 003, the traffic signal system also includes buried signal lights 004. The buried signal lights 004 are buried in the lane switching area of ​​the road and are used to guide the flow of the lanes before and after the switch according to the traffic direction of the corresponding road, and to prompt the movement of vehicles in the lane after the switch. Since the buried signal lights 004 can not only prompt and warn the traffic conditions of the road ahead, avoiding the situation where the driver of the following vehicle cannot see the traffic signal lights above the road ahead due to the large size of the vehicle in front, but also provide clear and effective guidance for vehicles in the lanes when the number of lanes changes, the traffic signal system can greatly improve the indication effect, increase the clarity and richness of the indication content, and help improve road driving safety compared with the prior art. In addition, since the installation of this buried signal light 004 is relatively simple and the implementation cost is low, it is highly applicable and easy to promote.

[0106] Accordingly, this application also provides a control method for a traffic signal system, wherein the traffic signal system includes a main controller 001, intersection traffic lights 002, intersection lane lights 003, and buried lights 004. The buried lights 004 include a first guide light group 0041 and a second guide light group 0042. The lane before switching includes a first direction lane before switching and a second direction lane before switching. The lane after switching includes a first direction lane after switching, a second direction lane after switching, and a tidal flow lane after switching located between the first direction lane after switching and the second direction lane after switching. For details, please refer to the previous embodiments, which will not be repeated here.

[0107] The control method of the traffic signal system includes: detecting the traffic direction of the switched tidal flow lane at set time intervals; when the traffic direction of the switched tidal flow lane is consistent with the traffic direction of the switched first direction lane, controlling the first guide signal light group 0041 to turn off and the second guide signal light group 0042 to turn on via the main controller 001; when the traffic direction of the switched tidal flow lane is consistent with the traffic direction of the switched second direction lane, controlling the first guide signal light group 0041 to turn on and the second guide signal light group 0042 to turn off via the main controller 001.

[0108] For example, such as Figure 8 As shown, the specific flow of the control method for this traffic signal system can be as follows:

[0109] S1, the controller 001 detects the traffic direction of the switched tidal lane at a set time interval, if the traffic direction of the switched tidal lane is consistent with that of the switched first direction lane, step S2 is performed, if the traffic direction of the switched tidal lane is consistent with that of the switched second direction lane, step S4 is performed.

[0110] S2, the main controller 001 sends a first control instruction to the buried signal lamp 004, wherein the first control instruction instructs the buried signal lamp 004 to extinguish the first guide signal lamp group 0041 and light up the second guide signal lamp group 0042, and then step S3 is performed.

[0111] S3, the buried signal lamp 004 extinguishes the first guide signal lamp group 0041 and lights up the second guide signal lamp group 0042 according to the received first control instruction.

[0112] Optionally, in order to avoid the situation that the rear vehicle driver's line of sight is blocked by the large size of the front vehicle, and cannot see the indication of the traffic signal lamp on the front road, the buried signal lamp 004 can also prompt the presence of vehicles on the switched lane, that is, the control method of the traffic signal lamp system can also include:

[0113] The main controller 001 prompts the traffic condition of the corresponding switched lane through the buried signal lamp 004 according to the traffic condition of the switched lane.

[0114] For example, taking the second guide signal lamp group 0042 including the second guide signal left lamp group 00421 close to the switched tidal lane and the second guide signal right lamp group 00422 close to the switched second direction lane as an example, when the second guide signal lamp group 0042 is lighted up, the step "the main controller 001 prompts the traffic condition of the corresponding switched lane through the buried signal lamp 004 according to the traffic condition of the switched lane" can include:

[0115] When the second guide signal lamp group 0042 is lighted up, the main controller 001 detects the traffic condition of the switched first direction lane, and sets the light color of the second guide signal left lamp group 00421 of the second guide signal lamp group 0042 according to the traffic condition of the switched first direction lane; and the main controller 001 detects the traffic condition of the switched second direction lane, and sets the light color of the second guide signal right lamp group 00422 of the second guide signal lamp group 0042 according to the traffic condition of the switched second direction lane, for example, which can be as follows:

[0116] When the main controller 001 detects that the switched first direction lane and the switched tidal lane are in traffic, the light color of the second guide signal left lamp group 00421 is green.

[0117] When the master controller 001 detects that the post-switch first direction lane and the post-switch tidal lane are stop, the second guide signal left light group 00421 is red.

[0118] When the master controller 001 detects that the post-switch second direction lane is running, the second guide right light group 00422 is red.

[0119] When the master controller 001 detects that the post-switch second direction lane is stop, the second guide right light group 00422 is green.

[0120] Optionally, in order to facilitate the vehicle driver to better predict the start and stop of the vehicle, the light color of the second guide signal left light group 00421 and the first guide signal right light group 00422 can also change according to the countdown of the traffic light, for example, as follows:

[0121] When the second guide signal light group 0042 is lit, and the post-switch first direction lane is about to change from stop to running, the light color of the second guide signal left light group 00421 gradually changes from red to green along the driving direction of the post-switch first direction lane.

[0122] When the second guide signal light group 0042 is lit, and the post-switch first direction lane changes from running to stop, the light color of the second guide signal left light group 00421 changes from green to red at the same time.

[0123] When the second guide signal light group 0042 is lit, and the post-switch second direction lane is about to change from stop to running, the light color of the second guide signal right light group 00422 gradually changes from red to green along the driving direction of the post-switch second direction lane.

[0124] When the second guide signal light group 0042 is lit, and the post-switch second direction lane changes from running to stop, the light color of the second guide signal right light group 00422 changes from green to red at the same time.

[0125] S4, the master controller 001 sends a second control instruction to the buried signal light 004, wherein the second control instruction instructs the buried signal light 004 to light up the first guide signal light group 0041 and extinguish the second guide signal light group 0042, and then execute step S5.

[0126] S5, the buried signal light 004 lights up the first guide signal light group 0041 and extinguishes the second guide signal light group 0042 according to the received second control instruction.

[0127] As described in step S3, in order to avoid the situation that the rear vehicle driver's line of sight is blocked by the large size of the front vehicle, and the front road traffic signal lamp indication cannot be seen, optionally, the host 001 can also prompt the traffic situation of the corresponding switched lane through the buried signal lamp 004 according to the traffic situation of the switched lane.

[0128] Taking the first guide signal lamp group 0041 including the first guide signal left lamp group 00411 close to the switched first direction lane and the first guide signal right lamp group 00412 close to the switched tidal lane as an example, if it is necessary to prompt the traffic situation of the corresponding switched lane through the buried signal lamp 004, when the first guide signal lamp group 0041 is lit, the step "the host 001 prompts the traffic situation of the corresponding switched lane through the buried signal lamp 004 according to the traffic situation of the switched lane" can include:

[0129] When the first guide signal lamp group is lit, the host 001 detects the traffic situation of the switched first direction lane, sets the light color of the first guide signal left lamp group 00411 of the first guide signal lamp group 0041 according to the traffic situation of the switched first direction lane, detects the traffic situation of the switched second direction lane, and sets the light color of the first guide signal right lamp group 00412 of the first guide signal lamp group 0041 according to the traffic situation of the switched second direction lane, for example, which can be as follows:

[0130] When the host 001 detects that the switched first direction lane is in traffic, the light color of the first guide signal left lamp group 00411 is green.

[0131] When the host 001 detects that the switched first direction lane is stopped, the light color of the first guide signal left lamp group 00412 is red.

[0132] When the host 001 detects that the switched second direction lane and the switched tidal lane are in traffic, the light color of the first guide signal right lamp group 00412 is green.

[0133] When the host 001 detects that the switched second direction lane and the switched tidal lane are stopped, the light color of the first guide signal right lamp group 00412 is red.

[0134] Similarly to the second guide signal lamp group 0042, optionally, in order to facilitate the vehicle driver to better predict the start and stop of the vehicle, the light color of the first guide signal left lamp group 00411 and the first guide signal right lamp group 00412 can also be changed according to the countdown of the traffic light, for example, which can be as follows:

[0135] When the first guide signal lamp group 0041 is lighted, and the first direction lane after switching is to be changed from stop to pass, the first guide signal left lamp group 00411 light color is gradually changed from red to green along the driving direction of the first direction lane after switching.

[0136] When the first guide signal lamp group 0041 is lighted, and the first direction lane after switching is to be changed from stop to pass, the first guide signal left lamp group 00411 light color is gradually changed from red to green along the driving direction of the first direction lane after switching.

[0137] When the first guide signal lamp group 0041 is lighted, and the first direction lane after switching is to be changed from stop to pass, the first guide signal left lamp group 00411 light color is gradually changed from red to green along the driving direction of the first direction lane after switching.

[0138] When the first guide signal lamp group 0041 is lighted, and the first direction lane after switching is to be changed from stop to pass, the first guide signal left lamp group 00411 light color is gradually changed from red to green along the driving direction of the first direction lane after switching.

[0139] The specific implementation of each step can refer to the system embodiment described above, and will not be repeated here.

[0140] As can be seen from the above, in the control method, not only can the buried signal lamp 004 be controlled to prompt and warn the passing situation of the front road, avoid the situation that the driver of the rear vehicle cannot see the indication of the traffic signal lamp in front of the road due to the large size of the vehicle in front, but also can provide clear and effective drainage to the vehicle on the lane when the number of lanes changes, so that the control method of the traffic signal lamp system can greatly improve the indication effect, improve the clarity and richness of the indication content, and help to improve the driving safety of the road.

[0141] The traffic signal lamp system and the control method of the traffic signal lamp system provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples; the above embodiment description is only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as limiting the present application.

Claims

1. A traffic signal system based on buried traffic lights, characterized in that, The traffic signal system is installed at a traffic intersection, which includes multiple roads and road intersections where multiple roads intersect. The traffic signal system includes: The main controller is used to control traffic lights and underground traffic lights at intersections; The traffic lights at the intersection are located in the middle of the road intersection and are connected to the main controller. They are used to indicate the movement and direction of vehicles under the control of the main controller. The buried traffic lights are installed in the lane switching area of ​​the road and are used, under the control of the main controller, to guide the flow of the lanes before and after the switch according to the traffic direction of the corresponding road, and to prompt the vehicles in the lane after the switch to move. The lane before switching includes a first direction lane and a second direction lane before switching; there is a lane divider line between the first direction lane and the second direction lane before switching; The switched lanes include a switched first direction lane, a switched second direction lane, and a switched tidal flow lane disposed between the switched first direction lane and the switched second direction lane. The switched tidal flow lane can switch the direction of travel according to traffic flow demand. There is a switched first interval line between the switched first direction lane and the switched tidal flow lane, and there is a switched second interval line between the switched second direction lane and the switched tidal flow lane. The buried signal lights include a first guide signal light group connecting the end point of the pre-switching interval line and the starting point of the post-switching first interval line, and a second guide signal light group connecting the end point of the pre-switching interval line and the starting point of the post-switching second interval line; The first guide signal light group includes a first guide signal left light group near the switched first direction lane and a first guide signal right light group near the switched tidal flow lane; the second guide signal light group includes a second guide signal left light group near the switched tidal flow lane and a second guide signal right light group near the switched second direction lane, so as to indicate the corresponding lane through the light groups at different positions.

2. The traffic signal system according to claim 1, characterized in that, When the traffic direction of the switched tidal lane is consistent with that of the switched second direction lane, the first guide signal light group is turned on and the second guide signal light group is turned off. When the switched tidal lane is aligned with the traffic direction of the switched first direction lane, the first guide signal light group turns off and the second guide signal light group turns on.

3. The traffic signal system according to claim 2, characterized in that, The first guide signal light group is illuminated specifically as follows: When the traffic lights at the intersection indicate that the first lane in the direction of traffic is open after the switch, the left light group of the first guide signal will be illuminated in green. When the traffic lights at the intersection indicate that the first direction lane is stopped after the switch, the left light group of the first guide signal will be red. When the traffic lights at the intersection indicate that the second-direction lane and the tidal flow lane after the switch are open for traffic, the right light group of the first guide signal will be illuminated in green. When the traffic lights at the intersection indicate that the second-direction lane and the tidal flow lane after the switch are stopped, the right light group of the first guide signal will be illuminated in red.

4. The traffic signal system according to claim 3, characterized in that, When the first guiding signal light group is lit, and the intersection traffic signal indicates that the first direction lane will change from stop to pass after the switch, the color of the left light group of the first guiding signal light group gradually changes from red to green along the travel direction of the first direction lane after the switch. When the first guide signal light group is lit, and the first direction lane changes from through traffic to stop after the switch, the color of the left light group of the first guide signal light group changes from green to red at the same time; When the first guide signal light group is lit and the second direction lane after the switch is about to change from stop to pass, the color of the right light group of the first guide signal light group gradually changes from red to green along the travel direction of the second direction lane after the switch. When the first guide signal light group is lit, and the second direction lane changes from passable to stopped after the switch, the right guide signal light group changes from green to red at the same time.

5. The traffic signal system according to claim 2, characterized in that, The second guide signal light group is illuminated specifically as follows: When the traffic lights at the intersection indicate that the first direction lane and the tidal flow lane after the switch are open for traffic, the left light group of the second guide signal will be illuminated in green. When the traffic lights at the intersection indicate that the first direction lane and the tidal flow lane after the switch are stopped, the left light group of the second guide signal is illuminated in red. When the traffic lights at the intersection indicate that the direction of travel for the second lane after the switch is forward, the second guide right light group will illuminate in red. When the traffic lights at the intersection indicate that the direction of travel in the second lane after the switch is to stop, the second guide right light group will illuminate in green.

6. The traffic signal system according to claim 5, characterized in that, When the second guide signal light group is lit, and the first direction lane is about to change from stop to pass after the switch, the color of the left light group of the second guide signal light group gradually changes from red to green along the travel direction of the first direction lane after the switch; When the second guide signal light group is lit, and the first direction lane changes from through traffic to stop after the switch, the color of the left light group of the second guide signal light group changes from green to red at the same time; When the second guide signal light group is lit, and the second direction lane is about to change from stop to pass after the switch, the color of the right light group of the second guide signal light group gradually changes from red to green along the travel direction of the second direction lane after the switch; When the second guide signal light group is lit, and the second direction lane changes from through traffic to stop after the switch, the color of the right light group of the second guide signal light group changes from green to red.

7. The traffic signal system according to claim 2, characterized in that, When the reversible lane changes its traffic direction after the switch, the left light of the first guide signal light group of the first guide signal light group is green and the right light of the first guide signal light group is red; the left light of the second guide signal light group of the second guide signal light group is red and the right light of the second guide signal light group is green, so as to prevent vehicles from entering the reversible lane after the switch.

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