CN-121565017-B - Intelligent early warning control method and system for highway profile marks

CN121565017BCN 121565017 BCN121565017 BCN 121565017BCN-121565017-B

Abstract

The application discloses an intelligent early warning control method and system for a highway profile mark, wherein the method comprises the steps of detecting the collision state of the profile mark in real time through a collision detection module preset on the profile mark, acquiring the original pile number and the collision severity parameter of the collided profile mark when a collision event is detected, wherein the collision severity parameter at least comprises the number of the collided profile marks, the instantaneous speed and the collision acceleration peak value of an accident vehicle, sending a pre-warning message to a rear Fang Lunkuo mark in the vehicle coming direction based on a wireless communication network, wherein the pre-warning message comprises the original pile number and the collision severity parameter, determining a warning interval range by adopting a preset grading rule in response to the collision severity parameter being smaller than a preset threshold value, calculating the difference value between the pile number and the original pile number by a rear Fang Lunkuo mark, and determining the warning interval based on the preset grading rule or a dynamic expansion model. The control method can dynamically calculate the range of the warning interval, and realize real-time monitoring, accurate warning and efficient processing of accidents.

Inventors

ZHANG JINKAI
MA YANPING
HE LIANGHAO
LIN YU
FANG YANBO

Assignees

福建省厦门高速公路管理有限公司
厦门兴华鼎自动化技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260123

Claims (10)

1. The intelligent early warning control method for the highway profile mark is characterized by comprising the following steps of: s1, detecting the collision state of a profile mark in real time through a collision detection module preset on the profile mark, and acquiring an original pile number and a collision severity parameter of the collided profile mark when a collision event is detected, wherein the collision severity parameter at least comprises the number of the collided profile marks, the instantaneous speed of an accident vehicle and a collision acceleration peak value; s2, transmitting a pre-warning message to a rear Fang Lunkuo mark of a vehicle coming direction based on a wireless communication network, wherein the pre-warning message comprises the original pile number and the collision severity parameter; S3, determining an alarm interval range by adopting a preset grading rule in response to the collision severity parameters being smaller than a preset threshold value; And triggering a dynamic expansion model to recalculate the warning interval range in response to any collision severity parameter being greater than or equal to the preset threshold, wherein the dynamic expansion model calculates a basic reaction distance and a basic braking distance based on the instantaneous speed of an accident vehicle, the reaction time of a driver and the road friction coefficient of an accident road section, and superimposes a safety redundant distance corresponding to the road line shape of the accident road section to obtain a synthesized distance, the synthesized distance is weighted by combining the number of the collided profile marks, the weighted synthesized distance is secondarily corrected based on a collision acceleration peak value to obtain the final warning interval range, and the dynamic expansion model satisfies the following conditions: ; When (when) When the dynamic expansion model cannot be acquired, the dynamic expansion model satisfies the following conditions: ; Wherein, the In order to dynamically expand the range of the warning interval, In order for the reaction time of the driver, Is the road surface friction coefficient of the accident road section, For the safety redundancy distance of the device, As the weight coefficient of the acceleration, For the number of the collided profile marks, Is the instantaneous speed of the accident vehicle, A collision acceleration peak value for the accident vehicle, Is the highest speed limit value of the accident road section, Is the gravity acceleration value; s4, calculating the difference value between the pile number of the rear Fang Lunkuo mark and the original pile number And determining an affiliated warning interval based on the preset grading rule or the dynamic expansion model, wherein: When (when) When the alarm signal belongs to a first alarm interval, the rear Fang Lunkuo marks alternately flash red and blue alarm lamps; When (when) When the alarm belongs to the second alarm interval, the rear Fang Lunkuo marks flash red alarm lamps; When (when) And when the alarm signal belongs to a third alarm interval, the rear Fang Lunkuo marks flash yellow alarm lamps.
2. The control method according to claim 1, characterized in that in S3: responsive to And And Determining the range of the warning interval by adopting a preset grading rule; responsive to Or (b) Or (b) Triggering a dynamic expansion model to recalculate the warning interval range.
3. The control method according to claim 1, wherein the section division ratio of the dynamic expansion model is: When (when) When the rear Fang Lunkuo is in the first warning section; When (when) When the rear Fang Lunkuo is in the second warning section; When (when) And when the rear Fang Lunkuo label belongs to a third warning section.
4. The control method according to claim 3, wherein the preset value of the first warning section in the preset classification rule is The preset value of the second warning interval is The preset value of the third warning interval is And when When the warning section is divided according to the section proportion of the dynamic expansion model, when And when the warning interval is kept at a preset value.
5. The control method according to claim 1, wherein, The following conditions are satisfied: Wherein, the As a function of the natural index of refraction, For the duration of the collision.
6. The control method according to claim 2, characterized in that the setting is performed Maximum value of (2) 3000M, when And when the system is used, the rear Fang Lunkuo marks of the expressway emergency lane are controlled to alternately flash the red and blue warning lamps, and high-risk early warning information is pushed to the navigation platform.
7. The control method according to claim 1, wherein when the early warning message is sent to the post Fang Lunkuo flag in S2, further comprising the steps of: S201, adopting an improved AODV protocol to select a main node from the post Fang Lunkuo marks; S202, the master node repackages the early warning message, wherein the packaged early warning message further comprises the current hop count And maximum number of hops Forwarding the packaged early warning message to a subsequent node hop by hop along the vehicle coming direction based on the 2.4G frequency band until the warning interval is covered; responsive to The main node adds a package emergency mark to the early warning message, and preferentially occupies a special emergency channel of a communication gateway, so that the subsequent node is forced to forward the early warning message at a minimum interval; responsive to And the master node synchronously activates the Bluetooth broadcasting function of the rear Fang Lunkuo target within 500m of the bumped profile target and pushes an avoidance command to vehicles within the range.
8. The control method according to claim 7, characterized in that the S201 further comprises: S211, broadcasting a route request packet RREQ to the coming direction of the vehicle by the collided profile mark, wherein the RREQ comprises a target direction mark and a minimum residual electric quantity percentage threshold value A synchronization mark and the original pile number; And S212, scoring the rear Fang Lunkuo marks by adopting a scoring formula, wherein the scoring formula meets the following conditions: wherein Score is the Score of the post Fang Lunkuo target, and the post Fang Lunkuo target is used as a candidate node and simultaneously meets the following requirements that the percentage of the residual electric quantity is Distance from the bumped profile Signal strength ; S213, comparing the Score of each rear Fang Lunkuo mark meeting the requirement, selecting the rear Fang Lunkuo mark with the highest Score as the main node, wherein the rear Fang Lunkuo mark between the bumped profile mark and the main node is an intermediate node, and when the main node and the intermediate node receive the RREQ containing the synchronous mark, triggering a local warning and caching collision event information immediately.
9. The control method according to claim 7 or 8, wherein the master node dynamically adjusts the maximum number of hops of the packaged early warning message according to the range of the warning interval, so as to satisfy: Wherein, the The covered distance for single hop transmission; In the process of the master node forwarding hop by hop, the subsequent nodes are according to the following And (3) with The ratio of (2) dynamically adjusts the transmit power: When (when) When the standard power emission is adopted; When (when) When the power enhancement mode is started; During each hop transmission, it is located in The post Fang Lunkuo mark in the range synchronously receives the early warning message and calculates And judging the warning interval to which the warning signal belongs.
10. An intelligent early warning control system for a highway profile sign, which adopts the control method as set forth in any one of claims 1 to 9, and is characterized by comprising: The profile mark module comprises a plurality of profile marks which are arranged at equal intervals along guardrails on two sides of a highway, and also comprises a collision detection module and a main control module, wherein the collision detection module comprises a Doppler radar sensor and an acceleration sensor which are respectively arranged on the surface and the inside of the profile mark, the main control module comprises a control circuit board, a data processing module, a data storage module, a network communication module and a Bluetooth communication module which are arranged on the control circuit board, the surface of the profile mark is also provided with a multicolor LED stroboscopic lamp, and the Doppler radar sensor, the acceleration sensor and the multicolor LED stroboscopic lamp are electrically connected with the control circuit board; The communication gateway module comprises a plurality of communication gateways and a core gateway, wherein the communication gateways are arranged at equal intervals along one side of the expressway, and the core gateway is arranged in the expressway machine room; the expressway server is arranged in the machine room and is in communication connection with the outline marker through the communication gateway.

Description

Intelligent early warning control method and system for highway profile marks Technical Field The invention relates to the technical field of expressway safety, in particular to an intelligent early warning control method and system for an expressway outline marker. Background The delineator is used as an important component of road safety facilities and is usually arranged on two sides or a central separation belt of a road, and is used for delineating the road line shape under night or low-light conditions through the retroreflection optical property so as to assist a driver to distinguish the driving direction. Because the existing profile marks have single functions, have only a static light reflecting function, cannot actively sense traffic states or road surface anomalies such as traffic accidents, lack active dynamic warning capability and cooperate with data interaction of a highway management system, and cannot realize intelligent, networked and autonomous collaborative decision-making functions. The invention patent No. CN114936668A discloses a road accident pre-warning system based on a contour mark, which is characterized in that when a vehicle accident happens, a pre-warning signal is sent to a pre-warning processing platform, further, the front road section and the rear road section are respectively intercepted at the front side and the rear side by taking the accident point as a midpoint, the range of a secondary pre-warning road section is calculated, the corresponding pre-warning light of the contour mark in the road section is further controlled to flash, the contour mark of the scheme does not have active dynamic warning capability, and the warning function of a warning section cannot be triggered at the first time when the collision accident happens. Therefore, the application aims to provide an intelligent early warning control method and system for the highway profile mark, which can actively trigger a dynamic warning function according to the collision severity. Disclosure of Invention Aiming at the defects in the prior art, the invention provides an intelligent early warning control method and system for a highway profile mark, which are used for solving the technical problems. According to a first aspect of the present application, an intelligent pre-warning control method for a highway profile is provided, including: s1, detecting the collision state of a profile mark in real time through a collision detection module preset on the profile mark, and when a collision event is detected, acquiring an original pile number and a collision severity parameter of the collided profile mark, wherein the collision severity parameter at least comprises the number of the collided profile marks, the instantaneous speed of an accident vehicle and a collision acceleration peak value; s2, transmitting a pre-warning message to a rear Fang Lunkuo mark of a vehicle coming direction based on a wireless communication network, wherein the pre-warning message comprises an original pile number and collision severity parameters; S3, determining a warning interval range by adopting a preset grading rule in response to the collision severity parameters being smaller than a preset threshold value; Triggering a dynamic expansion model to recalculate the warning interval range in response to any collision severity parameter being greater than or equal to a preset threshold, wherein the dynamic expansion model calculates a basic reaction distance and a basic braking distance based on the instantaneous speed of an accident vehicle, the reaction time of a driver and the road friction coefficient of an accident road section, superimposes a safety redundant distance corresponding to the road line shape of the accident road section to obtain a synthesized distance, performs weighted calculation on the synthesized distance by combining the number of the collided profile marks, and performs secondary correction on the synthesized distance after weighted calculation based on a collision acceleration peak value to obtain a final warning interval range; s4, calculating the difference value between the pile number of the pile and the original pile number by using a post Fang Lunkuo mark And determining an affiliated warning interval based on a preset grading rule or a dynamic expansion model, wherein: When (when) When the alarm belongs to the first alarm interval, the rear Fang Lunkuo marks alternately flash red and blue alarm lamps; When (when) When the alarm belongs to the second alarm interval, the rear Fang Lunkuo marks flash red alarm lamps; When (when) When belonging to the third warning interval, the rear Fang Lunkuo marks flash yellow warning lamps. By adopting the technical scheme, when a vehicle on an expressway hits the profile marks on the guardrails on two sides, the hit profile mark sends an early warning message containing the original pile number and the collision severity parameters to the direction of the v