Adaptive deceleration prompting method and device for intersection passing
By setting up an adaptive deceleration reminder device in front of the intersection, using radar sensors and cameras to identify license plates, and combining the traffic light status to remind vehicles to slow down, the problems of insufficient dynamism and targeting of traditional deceleration reminder methods are solved, and safe and efficient passage is achieved in congested conditions.
Patent Information
- Application Number
- CN202510960090.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-10-14
AI Technical Summary
Traditional intersection speed reduction warning methods lack dynamism and specificity, resulting in reduced traffic efficiency and energy waste. It is especially difficult to achieve accurate speed planning for freight vehicles with large inertia.
An adaptive deceleration reminder device for intersection traffic is set up in front of the intersection. It uses a radar sensor to detect vehicle speed. Combined with the status of the intersection traffic lights, it recognizes the license plate number through a camera and displays it on the LED screen and uses voice broadcast to remind vehicles to slow down. The device switches synchronously with the traffic lights to cope with congestion.
In the case of traffic congestion at intersections, vehicles are reminded to slow down in advance, which improves traffic efficiency, reduces the phenomenon of following green lights, and ensures safety and energy conservation.
Smart Images
Figure CN120783554A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of intelligent transportation, in particular to a kind of intersection traffic adaptive deceleration prompting method and device. BACKGROUND
[0002] Intersection is an important node in road traffic network, and bears the traffic and turning function of vehicles, pedestrians and non-motor vehicles. In the traffic-busy section of national and provincial highways, intersection is usually the core area of various traffic flow intersection, and its design and management directly affect traffic safety and efficiency. Since intersection collects traffic participants in different directions, there are many traffic conflict points, which are prone to be accident-prone areas.
[0003] At present, for the safety warning and traffic control of intersection, it mainly depends on traffic signal, sign and line and part of electronic prompt device at intersection. For example, through setting red and green light to control the time traffic of vehicles and pedestrians, or setting deceleration sign in front of intersection to remind driver to decelerate in advance.
[0004] However, the traditional deceleration prompting method lacks dynamic and pertinence, for example, only prompting "there is intersection in front" without combining intersection state, which is easy to cause traffic efficiency to decline and energy waste, especially for heavy goods vehicles with large inertia, it is difficult to realize accurate speed planning. SUMMARY
[0005] Therefore, the present application provides a kind of intersection traffic adaptive deceleration prompting method and device, reminds vehicle to decelerate in advance under intersection congestion condition, improves traffic efficiency while ensuring safety, has good application scene in urban road, and can effectively reduce green light follow-up phenomenon. To this end, the present application adopts the following technical solutions: On the one hand, the present application provides a kind of intersection traffic adaptive deceleration prompting method, which sets intersection traffic adaptive deceleration prompting device at a predetermined distance from intersection, and the device comprises: stand, crossbar, LED lamp box, camera and controller. Wherein, the stand is fixed to the ground. The crossbar is perpendicular to the stand and is fixedly connected with the stand, and the crossbar is arranged at a first predetermined height of the stand. The LED lamp box is arranged on the crossbar, at a predetermined distance from the stand. The camera is located at the top end of the stand. The controller is arranged at a fourth predetermined height of the stand and is electrically connected with the camera and the LED lamp box. The method comprises: S1, detecting the speed of vehicle passing through the intersection stop line by radar sensor arranged at the intersection stop line; S2, the controller acquires the current intersection signal light state; S3, when the speed of the vehicle passing through the intersection stop line is less than the minimum speed set on the road surface, and the traffic light in the traffic direction is green, it is judged that the intersection in the traffic direction is congested; S4, when the intersection in the traffic direction is congested, the camera of the intersection traffic adaptive speed reduction prompt device captures the image including the vehicle license plate number, the license plate number recognition algorithm built in the controller is used for license plate number recognition, and the LED screen of the intersection traffic adaptive speed reduction prompt device displays the license plate number and "the intersection ahead is congested, please slow down".
[0006] Further, the device further comprises a voice player arranged at the second preset height of the vertical rod; and the voice player is electrically connected with the controller; when the intersection in the traffic direction is congested, the voice player plays "the intersection ahead is congested, please slow down" for the vehicle arriving at the intersection traffic adaptive speed reduction prompt device.
[0007] Further, the device further comprises a solar panel located at the third preset height of the vertical rod, and used for supplying power for the device.
[0008] Further, the controller acquires the current intersection signal light state, including: the controller is connected with the intersection signal light controller through the Internet of Things device, and the switching time of the device and the intersection signal light is synchronized.
[0009] Further, the controller acquires the current intersection signal light state, including: the controller is connected with the intersection signal light controller through the signal machine cloud server platform, and the switching time of the device and the intersection signal light is synchronized.
[0010] In another aspect, the application also provides an intersection traffic adaptive speed reduction prompt device, the device comprising: a vertical rod, a horizontal rod, an LED lamp box, a camera and a controller; wherein the vertical rod is fixed to the ground; the horizontal rod is perpendicular to the vertical rod and is fixedly connected with the vertical rod, and the horizontal rod is arranged at the first preset height of the vertical rod; the LED lamp box is arranged on the horizontal rod at a preset distance from the vertical rod; the camera is located at the top end of the vertical rod; the controller is arranged at the fourth preset height of the vertical rod and is electrically connected with the camera and the LED lamp box respectively; The controller acquires the vehicle speed passing through the intersection stop line detected by the radar sensor arranged at the intersection stop line; and acquires the current intersection signal lamp state by interfacing with the intersection signal lamp control machine; when the vehicle speed passing through the intersection stop line is detected to be less than the minimum speed set on the road surface, and the intersection signal lamp state in the passing direction is green, it is judged that the intersection in the passing direction is congested; when the intersection in the passing direction is congested, the camera of the intersection passing adaptive speed reduction prompt device shoots the image including the vehicle license plate number, the license plate number recognition is performed by the license plate number recognition algorithm built in the controller, the LED screen of the intersection passing adaptive speed reduction prompt device displays the license plate number and "the intersection ahead is congested, please slow down".
[0011] Further, the controller interfaces with the intersection signal lamp control machine, including: the controller interfaces with the intersection signal lamp control machine through the Internet of Things device, or the controller interfaces with the intersection signal lamp control machine through the signal machine cloud server platform, to realize synchronization of the device and the intersection signal lamp switching time.
[0012] Further, the device further includes: a voice player arranged at the second preset height of the stand; and electrically connected with the controller; when the intersection in the passing direction is congested, the voice player plays "the intersection ahead is congested, please slow down" for the vehicle arriving at the intersection passing adaptive speed reduction prompt device.
[0013] Compared with the prior art, the intersection passing adaptive speed reduction prompt method and device have the following beneficial effects: In the application, the vehicle speed is detected by the radar sensor at the intersection stop line, when the vehicle speed is detected to be less than the minimum speed set on the road surface, and the intersection signal lamp state in the passing direction is green, it is judged that the intersection in the passing direction is congested. When the intersection in the passing direction is congested, the camera of the intersection passing adaptive speed reduction prompt device shoots the image including the vehicle license plate number, the license plate number recognition is performed by the license plate number recognition algorithm built in the controller, the LED screen of the intersection passing adaptive speed reduction prompt device displays the license plate number and "the intersection ahead is congested, please slow down", and the voice player of the intersection passing adaptive speed reduction prompt device plays "the intersection ahead is congested, please slow down". It can be seen that in the application, the vehicle is reminded to slow down in advance under the condition of intersection congestion, which can improve the passing efficiency while ensuring safety, and has good application scenarios in urban roads, and can effectively reduce the green light following phenomenon. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.
[0015] Figure 1 The flow chart of the intersection passing adaptive deceleration prompting method in the embodiment of the present application; Figure 2 The structural schematic diagram of the intersection passing adaptive deceleration prompting device in the embodiment of the present application. DETAILED DESCRIPTION
[0016] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should be within the scope of protection of the present application.
[0017] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily mean a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0018] As shown in Figure 1 The present application provides an intersection passing adaptive deceleration prompting method, which is provided with an intersection passing adaptive deceleration prompting device at a preset distance from the intersection, as shown in Figure 2As shown, the device comprises: a vertical rod 1, a horizontal rod 2, an LED lamp box 3, a camera 4, a voice player 5, a solar panel 6 and a controller 7; wherein the vertical rod 1 is fixed to the ground; the horizontal rod 2 is perpendicular to the vertical rod 1 and is fixedly connected with the vertical rod 1, and the horizontal rod 2 is arranged at a first preset height of the vertical rod 1; the LED lamp box 3 is arranged on the horizontal rod 2 at a preset distance from the vertical rod 1, and is used for displaying intersection passing text information; the camera 4 is located at the top end of the vertical rod 1, and is used for shooting vehicles within a certain range of the intersection to obtain the license plate number of the vehicle; the voice player 5 is arranged at a second preset height of the vertical rod 1, and is used for voice circular broadcast of each content displayed by the LED lamp box 3; the solar panel 6 is located at a third preset height of the vertical rod 1, and is used for power supply of the device; and the controller 7 is arranged at a fourth preset height of the vertical rod 1, and is electrically connected with the voice player 5, the solar panel 6, the camera 4 and the LED lamp box 3.
[0019] Specifically, the following steps are included: S1, detecting the speed of a vehicle passing through the intersection stop line through a radar sensor at the intersection stop line; In specific implementation, the radar sensor is arranged at the intersection stop line, and is used for detecting the speed of a passing vehicle.
[0020] S2, the controller acquires the current intersection signal lamp state; In specific implementation, the controller is connected with the intersection signal lamp control machine in two ways to acquire the current intersection signal lamp state, one is through the Internet of Things device, and the other is through the signal machine cloud server platform, so as to realize synchronization of the device and the intersection signal lamp switching time.
[0021] S3, when the speed of a vehicle passing through the intersection stop line is less than the minimum speed set on the road surface, and the intersection signal lamp state in the passing direction is green, it is judged that the intersection in the passing direction is congested; In specific implementation, step S3 is executed by the controller, the radar sensor is electrically connected with the controller, the detected vehicle speed is sent to the controller, and the controller judges whether the intersection is congested.
[0022] S4, when the intersection in the passing direction is congested, for a vehicle arriving at the intersection adaptive speed reduction prompt device, the camera of the intersection adaptive speed reduction prompt device shoots an image including the license plate number of the vehicle, the license plate number recognition algorithm built in the controller is used for license plate number recognition, the LED screen of the intersection adaptive speed reduction prompt device displays the license plate number and "the intersection ahead is congested, please slow down", and the voice player of the intersection adaptive speed reduction prompt device broadcasts "the intersection ahead is congested, please slow down".
[0023] For the convenience of understanding, the intersection adaptive speed reduction prompt device is described in detail below.
[0024] The intersection passing self-adaptive deceleration prompting device in the embodiment of the application comprises a vertical rod 1, a horizontal rod 2, an LED lamp box 3, a camera 4, a voice player 5, a solar panel 6, a controller 7 and a radar sensor 8. The vertical rod 1 is in an upright state, and the bottom of the vertical rod 1 is fixed on a concrete foundation through embedded bolts, the depth of the foundation is 0.8 meters, and the vertical rod 1 serves as a support structure of the device and is used for fixing and installing other components. The height and position of the vertical rod 1 are set according to the actual intersection situation, so as to ensure that the device can cover vehicles within a range of 500-1000 meters upstream of the intersection. A hollow cable channel can be arranged in the vertical rod 1 for wiring, so as to ensure the tidiness and aesthetics of the inside of the device. The vertical rod 1 is made of high-strength steel material, which has good wind resistance and corrosion resistance, so as to adapt to various severe weather conditions. In specific implementation, Q235 steel material can be used, and the surface is subjected to hot galvanizing treatment for corrosion and rust prevention. The height can be customized according to actual requirements, and the height of 3.5 meters is preferred, which has good wind resistance and durability. Preferably, the vertical rod 1 can be replaced by an existing street lamp pole.
[0025] The horizontal rod 2 is in a horizontal and vertical state with the vertical rod 1, is fixed at a first preset height of the vertical rod 1 (the preferred value is 3 meters, and in specific implementation, the height of the vertical rod 1, the field of view range of the camera 4 installed at the top of the vertical rod 1, the display effect of the LED lamp box 3, the convenience of equipment installation and maintenance, and the traffic regulations and safety requirements can be designed), is made of stainless steel material, has a length of 3 meters and a width of 10 centimeters, one end of the horizontal rod 2 is connected to the top end of the vertical rod 1 through bolts, and the LED lamp box 3 is installed at the middle part of the horizontal rod 2. A sealing ring is arranged at the connection between the horizontal rod 2 and the vertical rod 1 to prevent rainwater from seeping in. A cable channel is also arranged in the horizontal rod 2 and is connected to the cable channel in the vertical rod 1, and is used for connecting the LED lamp box 3 and the controller 7.
[0026] The LED lamp box 3 is installed on the horizontal rod 2 at a preset distance from the vertical rod 1 (the preferred value is 1.5 meters), is located on the front of the device, and displays intersection passing text information including a plurality of license plate numbers and information about whether the vehicle with the license plate number can pass through the intersection. The LED lamp box 3 is a high-brightness LED lamp box with a model of Lian Dian P6, the size of the LED lamp box 3 is: column: 8*24=192, row: 5*24=120; pixel Pix: 128*80, and a red-green two-color design is adopted. The brightness of the LED lamp box 3 can be automatically adjusted according to the ambient light to ensure that the information can be clearly displayed in the daytime and at night. The shell of the lamp box is designed to be waterproof and dustproof to adapt to outdoor environments.
[0027] The camera 4 is installed at the top of the vertical pole 1 for real-time monitoring of the traffic conditions at the intersection. In a specific implementation, the camera 4 can be a high-definition license plate recognition camera with a model number of Hikvision DS-2CD2625FWD-IS, which has automatic focusing, low-light shooting, and night infrared light supplementing functions. Its shooting range covers an area of 15 meters in front and 10 meters on the left and right of the intersection, and it can clearly capture vehicle license plate numbers and transmit image data to the controller 7.
[0028] The solar panel 6 is installed at a second preset height of the vertical pole 1 (preferably 2.5 meters). In a specific implementation, the solar panel 6 can be a monocrystalline silicon solar panel with a model number of Longji LS6-60M, an area of 0.6 square meters, and a conversion efficiency of 18%. The solar panel 6 is connected to a 12V, 100Ah energy storage battery (model: TND12-100) for storing electrical energy to ensure that the device can operate normally at night or on cloudy days. The output power of the solar panel 6 is 100W, which can meet the daily power consumption needs of the device.
[0029] The voice player 5 is installed at a third preset height of the vertical pole 1 (preferably 1.8 meters to facilitate sound propagation and not affect pedestrian and vehicle traffic), so that the driver can clearly hear the prompt voice. The voice player 5 receives signals through the controller 7 and plays corresponding voice prompts according to the status of the intersection traffic lights. The voice player 5 adopts a waterproof and dustproof design to ensure its stability and durability in outdoor environments.
[0030] The controller 7 can be an embedded microcontroller with a model number of Arduino Mega 2560, which has data processing, storage, and communication functions. The controller 7 is connected to the intersection traffic light control machine in two ways: one is through an Internet of Things device, and the other is through a signal machine cloud server platform, to achieve synchronization of the device and the intersection traffic light switching time. The controller 7 is electrically connected to the voice player 5, the solar panel 6, the camera 4, and the LED light box 3, and can receive data from each component and control the output of the voice player 5 and the LED light box 3 through the built-in intersection traffic prediction algorithm.
[0031] The radar sensor 8 is arranged at the intersection stop line to detect the speed of passing vehicles. The radar sensor 8 is connected to the controller 7, which judges that there is congestion at the intersection in the direction of travel when the detected vehicle speed is less than the minimum speed set on the road and the intersection traffic status in that direction is displayed as a green light. When there is congestion at the intersection, the driver is still reminded that it is impossible to pass through the intersection, and the driver is reminded that there is a speed reduction at the intersection ahead, improving the safety of the intersection.
[0032] Specifically, the speed of the passing vehicle is detected by the radar sensor at the stop line of the intersection, and when the detected vehicle speed is less than the minimum speed set on the road surface and the traffic light of the intersection in the direction of the vehicle is green, it is determined that the intersection in the direction of the vehicle is congested. When the intersection in the direction of the vehicle is congested, the camera of the intersection adaptive speed reduction prompt device captures an image including the license plate number of the vehicle that has arrived at the intersection adaptive speed reduction prompt device, the license plate number is recognized by the license plate number recognition algorithm built in the controller, the LED screen of the intersection adaptive speed reduction prompt device displays the license plate number and "the intersection ahead is congested, please slow down", and the voice player of the intersection adaptive speed reduction prompt device plays "the intersection ahead is congested, please slow down".
[0033] In this embodiment, whether to pass through the intersection is suggested according to the congestion of the intersection, and the vehicle is reminded to slow down in advance under the condition of congestion of the intersection, which improves the traffic efficiency while ensuring safety, and has a good application scene in urban roads, and can effectively reduce the green light following phenomenon.
[0034] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A method for adaptively slowing down traffic at an intersection, characterized in that: An adaptive deceleration warning device for intersection passage is provided at a preset distance from the intersection, the device comprising: a vertical pole, a horizontal pole, an LED light box, a camera, and a controller; wherein the vertical pole is fixed to the ground; the horizontal pole is perpendicular to the vertical pole and fixedly connected to the vertical pole, and the horizontal pole is provided at a first preset height of the vertical pole; the LED light box is provided on the horizontal pole at a preset distance from the vertical pole; the camera is located at the top of the vertical pole; the controller is provided at a fourth preset height of the vertical pole and is electrically connected to the camera and the LED light box respectively; the method comprises: S1, detecting the speed of vehicles passing through the stop line of the intersection by a radar sensor arranged at the stop line of the intersection; S2, the controller obtains the current status of the intersection signal light; S3. When it is detected that the speed of a vehicle passing through the stop line at the intersection is less than the minimum speed set on the road surface, and the traffic light at the intersection in the direction of travel is green, it is determined that congestion occurs at the intersection in the direction of travel; S4. When congestion occurs at the intersection in the direction of travel, the camera of the adaptive deceleration warning device for intersection captures an image including the vehicle's license plate number for vehicles arriving at the adaptive deceleration warning device for intersection. The license plate number is recognized by the license plate number recognition algorithm built into the controller, and the LED screen of the adaptive deceleration warning device for intersection displays the license plate number and "Congestion at the intersection ahead, please slow down." 2. According to claim 1, a method for adaptively slowing down traffic at an intersection, characterized in that: The device also includes: a voice player, which is set at a second preset height of the pole and is electrically connected to the controller; when congestion occurs at the intersection in the direction of travel, the voice player broadcasts "The intersection ahead is congested, please slow down" to vehicles arriving at the intersection adaptive deceleration prompt device.
3. A method for adaptively slowing down traffic at an intersection according to claim 1, characterized in that: The device further comprises: a solar panel located at a third preset height of the pole, for supplying power to the device.
4. A method for adaptively slowing down traffic at an intersection according to claim 1, characterized in that: The controller obtains the current status of the intersection signal light, including: the controller is connected to the intersection signal light controller through the Internet of Things device to achieve synchronization of the switching time of the device and the intersection signal light.
5. A method for adaptively slowing down traffic at an intersection according to claim 1, characterized in that: The controller obtains the current status of the intersection signal light, including: the controller connects to the intersection signal light controller through the signal light cloud server platform to achieve synchronization of the switching time between the device and the intersection signal light.
6. An adaptive deceleration warning device for traffic at an intersection, characterized in that: The device comprises: a vertical pole, a horizontal pole, an LED light box, a camera, and a controller; wherein the vertical pole is fixed to the ground; the horizontal pole is perpendicular to the vertical pole and fixedly connected to the vertical pole, and the horizontal pole is arranged at a first preset height of the vertical pole; the LED light box is arranged on the horizontal pole at a preset distance from the vertical pole; the camera is located at the top of the vertical pole; and the controller is arranged at a fourth preset height of the vertical pole and is electrically connected to the camera and the LED light box respectively. The controller obtains the speed of the vehicle passing the stop line of the intersection detected by the radar sensor set at the stop line of the intersection; and obtains the current state of the intersection signal light by docking with the intersection signal light controller; when it is detected that the speed of the vehicle passing the stop line of the intersection is less than the minimum speed set on the road surface, and the state of the intersection signal light in the direction of travel is green, it is determined that congestion occurs at the intersection in the direction of travel; when congestion occurs at the intersection in the direction of travel, for vehicles arriving at the intersection adaptive deceleration prompt device, the camera of the intersection adaptive deceleration prompt device captures an image including the vehicle license plate number, and the license plate number recognition algorithm built into the controller recognizes the license plate number, and the LED screen of the intersection adaptive deceleration prompt device displays the license plate number and "The intersection ahead is congested, please slow down".
7. The adaptive deceleration warning device for intersection traffic according to claim 6, characterized in that: The controller is connected to the intersection signal light controller, including: the controller is connected to the intersection signal light controller through an Internet of Things device, or the controller is connected to the intersection signal light controller through a signal light cloud server platform to achieve synchronization of the switching time of the device and the intersection signal light.
8. The adaptive deceleration warning device for intersection traffic according to claim 6, characterized in that: The device also includes: a voice player, which is set at a second preset height of the pole and is electrically connected to the controller; when congestion occurs at the intersection in the direction of travel, the voice player broadcasts "The intersection ahead is congested, please slow down" to vehicles arriving at the intersection adaptive deceleration prompt device.