Collision alarm system of guardrail plate for road

Abstract

The invention relates to the technical field of alarm signal transmission, in particular to a collision alarm system of a road guardrail plate, which comprises a vibration alarm module, a disconnection trigger alarm module, a video quick calling module, a central management module and a maintenance linkage module, the vibration alarm module senses a vibration signal through a vibration sensor, the microcontroller receives the vibration signal, the vibration intensity is compared with a preset threshold value, and the alarm signal judged by the microcontroller is sent to the center management module through the wireless communication module; according to the invention, the vibration alarm module focuses on the monitoring of slight to moderate collision, the vibration change of the guardrail is perceived in real time by means of the high-sensitivity vibration sensor, that is, the situation that the guardrail does not deform but a collision accident occurs under a special condition, and the disconnection triggering alarm module mainly aims at relatively serious collision. When the guardrail is greatly deformed to cause disconnection of the lead, an alarm is triggered, and then collision conditions of different degrees are comprehensively covered.

Description

Technical Field

[0001] The invention relates to the technical field of alarm signal transmission, and in particular to a collision alarm system for a highway guardrail. Background Art

[0002] The collision alarm system of highway guardrails is a key component of the highway traffic safety assurance system. Its main function is to quickly detect the collision event when a vehicle collides with the guardrail, and promptly send an alarm message to the relevant management department so that rescue and traffic diversion measures can be taken quickly to reduce accident losses.

[0003] Traditional alarm systems lack accurate monitoring mechanisms and are easily affected by external environmental interference (such as strong winds, ground vibrations caused by large vehicles passing by, etc.), resulting in false alarms or missed alarms in the event of minor collisions. This makes it difficult for the traffic police department to obtain accurate accident information in a timely manner, and is unable to quickly determine whether police dispatch and resources are needed, resulting in delayed emergency response. Secondly, traditional systems can only send out simple alarm signals and cannot provide detailed accident location information. The traffic police command center is unable to quickly determine the location of the accident and cannot plan the best rescue route in a timely manner, which seriously affects rescue efficiency. Furthermore, the information exchange between the traditional system and the traffic police command center is limited, and efficient linkage cannot be achieved.

[0004] To this end, the present invention proposes a collision alarm system for highway guardrails, which focuses on monitoring minor to moderate collisions through a vibration alarm module, and relies on a highly sensitive vibration sensor to sense the vibration changes of the guardrail in real time, i.e., situations in which a collision accident has occurred without deformation of the guardrail in special circumstances. In addition, a disconnection trigger alarm module is used to mainly target more serious collisions, and an alarm is triggered when a large deformation of the guardrail causes a disconnection of the wire. The monitoring ranges of the two are complementary, and they comprehensively cover collisions of different degrees. Summary of the invention

[0005] Technical problems to be solved: False alarms and insufficient police coordination may occur due to interference from the external environment.

[0006] In view of the deficiencies in the prior art, the present invention provides a collision warning system for a highway guardrail, thereby solving the technical problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A collision alarm system for a highway guardrail, the system comprising a vibration alarm module, a disconnection trigger alarm module, a video quick retrieval module, a central management module, and a maintenance linkage module;

[0009] The vibration alarm module senses the vibration signal through the vibration sensor, and the microcontroller receives the vibration signal, compares the intensity of the vibration with the preset threshold, and uses the wireless communication module to send the alarm signal judged by the microcontroller to the central management module;

[0010] The disconnection trigger alarm module includes an early warning device and a connecting wire, and the wire and the early warning device are connected by spot welding;

[0011] The video quick retrieval module includes video monitoring equipment, network transmission equipment and storage server. The video monitoring equipment is installed every 500 meters and has automatic focusing, intelligent tracking and high-definition image acquisition functions. Each camera is equipped with a high-precision GPS positioning module. The network transmission equipment is connected through an optical fiber network and equipped with a wireless communication module as a backup. The storage server uses a large-capacity disk array and has a data backup and recovery system.

[0012] The central management module includes an alarm information receiving and processing program, a video call control program, and a linkage control program. The alarm information receiving and processing program is responsible for receiving the alarm signal and feeding back the alarm information to the Sky Eye system of the traffic police command center in a specific format. The video call control program is responsible for obtaining the corresponding video data from the video quick retrieval module according to the location information in the alarm information. The linkage control program is responsible for connecting the rescue resources and maintenance linkage module of the traffic police command center to realize the start of rescue work and the arrangement of maintenance tasks.

[0013] The maintenance linkage module includes a maintenance management platform server and a mobile terminal. The maintenance management platform server has powerful data processing and storage capabilities. The mobile terminal is installed with a special maintenance management APP, which interacts with the maintenance management platform server through a wireless network. The maintenance linkage module includes a work order management system, a maintenance personnel management system and a maintenance equipment management system.

[0014] In one possible implementation, the preset thresholds include a vibration intensity threshold, a vibration frequency threshold, and a duration threshold. That is, when the vibration intensity detected by the vibration sensor continuously exceeds the vibration intensity threshold within the duration threshold, and the vibration frequency exceeds the vibration frequency threshold within the duration threshold, the microcontroller determines that the guardrail has been collided and triggers an alarm.

[0015] In a possible implementation, the disconnection triggers the wires between adjacent early warning devices to be connected in a straight line, and the guardrail is hit violently to bend and deform, squeezing the wires, causing the wires to be disconnected from the early warning devices to trigger an alarm.

[0016] In a possible implementation, the linkage control program includes displaying text boxes such as "collision alarm is issued between km and km of a certain road section", "accident rescue" and "abnormal maintenance" on the Sky Eye system;

[0017] The "collision alarm is issued between the kilometer position and the kilometer position of a certain road section" is a program for triggering the video quick retrieval module to obtain corresponding video data;

[0018] The "accident rescue" program is used to carry out accident rescue and connect with the maintenance linkage module to repair damaged guardrails based on the Sky Eye system of the traffic police command center;

[0019] The "abnormal maintenance" program is used to directly connect to the maintenance linkage module and arrange maintenance personnel to go to the location of the abnormal alarm equipment for inspection and maintenance.

[0020] Beneficial effects compared with the prior art:

[0021] 1. In this solution, the vibration alarm module focuses on monitoring minor to moderate collisions. The highly sensitive vibration sensor can sense the vibration changes of the guardrail in real time, that is, in special cases where the guardrail has not deformed but a collision has occurred. In addition, the disconnection trigger alarm module is mainly used for more serious collisions. When the guardrail is greatly deformed and the wire is disconnected, the alarm is triggered. The monitoring ranges of the two are complementary, covering collisions of different degrees.

[0022] 2. In this solution, advanced wireless communication technology and multiple functional units in the central processing module are used to achieve stable and rapid transmission and intelligent analysis and processing of alarm information. The alarm information receiving and processing program can quickly analyze the alarm signal and feed it back to the Sky Eye system of the traffic police command center. The video call control program can quickly retrieve accident-related video data. The linkage control program realizes efficient linkage between rescue and maintenance according to the operation of the command center personnel. This improves the efficiency of information transmission and processing, can timely deploy rescue resources, quickly arrange guardrail maintenance, maximize the safety of personnel at the accident site, restore the highway safety protection function, and improve the level of highway traffic safety management and emergency response capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0024] Figure 1 A system framework diagram of a collision warning system for a highway guardrail;

[0025] Figure 2The present invention is a schematic diagram of the equipment installation of a collision warning system for a highway guardrail. DETAILED DESCRIPTION

[0026] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various forms, so the present invention is not limited to the embodiments described below.

[0027] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0028] Example:

[0029] Please refer to Figure 1-2 As shown, this embodiment introduces a collision warning system for a highway guardrail, including the following modules:

[0030] 1. Vibration alarm module

[0031] 1.1 Hardware Design

[0032] Vibration sensor: piezoelectric vibration sensor is used to accurately capture the subtle vibration of the guardrail caused by vehicle collision by taking advantage of its high sensitivity and fast response characteristics. It is firmly installed at the connection between the guardrail plate and the column through a customized fixture. This part is where the vibration transmission is concentrated during a collision, which can ensure that the sensor can effectively sense the vibration signal.

[0033] Microcontroller: A high-performance single-chip microcomputer is used as the microcontroller, which has rich peripheral interfaces and powerful data processing capabilities. The microcontroller receives the vibration signal and compares the intensity of the vibration with the preset threshold;

[0034] Wireless communication module: Select the LoRa wireless communication module, which has the characteristics of low power consumption and long-distance transmission. It is suitable for the relatively scattered environment along the highway. It is responsible for sending the alarm signal judged by the microcontroller to the central management module to ensure the stability and reliability of data transmission;

[0035] Power module: To ensure that the vibration alarm module can work continuously and stably in various environments, a power supply method combining solar energy and lithium batteries is adopted. The solar panel converts solar energy into electrical energy during the day and stores it in the lithium battery. The lithium battery powers the module at night or when there is insufficient light. At the same time, the power module also has overcharge and over-discharge protection functions to extend the battery life.

[0036] 1.2 Threshold Setting

[0037] Through a large number of actual road collision simulation experiments and long-term monitoring and analysis of collision data of different road sections and different vehicle models, and comprehensive consideration of various factors such as the material, structure and installation environment of the guardrail, the vibration intensity threshold of the vibration alarm module is finally determined to be 5g (g is the acceleration of gravity), the vibration frequency threshold is 20Hz, and the duration threshold is 0.5 seconds. Specifically, when the vibration intensity detected by the vibration sensor exceeds 5g for 0.5 seconds and the vibration frequency exceeds 20Hz within the 0.5 second time period, the microcontroller determines that the guardrail has been hit and triggers an alarm. Such threshold settings can not only effectively identify real collision events, but also avoid false alarms caused by environmental factors (such as strong winds, small animal collisions, etc.);

[0038] 1.3 Working Principle

[0039] When a vehicle collides with a guardrail, the guardrail vibrates, and the vibration sensor converts the mechanical vibration into an electrical signal, which is transmitted to the microcontroller. The microcontroller analyzes the signal and, if it determines that the vibration intensity, frequency, and duration reach or exceed a preset threshold, it determines that the guardrail has been collided, and then sends an alarm signal to the central management module through the wireless communication module. The alarm signal contains the position coding information of the vibration alarm unit;

[0040] 2. Disconnection trigger alarm module

[0041] 2.1 Hardware Design

[0042] Early warning equipment: Early warning equipment uses a miniaturized intelligent device that integrates a microprocessor, a communication module, and a power module. The microprocessor is responsible for monitoring the connection status of the wires and processing and sending alarm information; the communication module is used to interact with the central management module for data; the power module provides stable power for the equipment and adopts a low-power design to ensure long-term stable operation of the equipment;

[0043] Connecting wire: Use high-strength, wear-resistant and flexible wire to connect adjacent early warning devices. The wire and the early warning device are connected by spot welding.

[0044] 2.2 Working Principle

[0045] Adjacent early warning devices are connected in a straight line through wires to form a continuous monitoring network. Since the straight line distance between two points is the shortest, when the guardrail is hit hard and bends and deforms, it will squeeze the wire, causing the wire to be disconnected from the early warning device. At this time, the microprocessor in the disconnected early warning device detects the change in line status, immediately starts the alarm program, and sends an alarm signal to the central management module through the communication module. The alarm signal contains the location identification information of the early warning device;

[0046] The vibration alarm module focuses on monitoring minor to moderate collisions. It uses a highly sensitive vibration sensor to sense the vibration changes of the guardrail in real time, that is, in special cases where the guardrail has not deformed but a collision has occurred. The disconnection trigger alarm module is mainly for more serious collisions. When the guardrail is greatly deformed and the wire is disconnected, the alarm is triggered. The monitoring ranges of the two are complementary, covering collisions of different degrees.

[0047] 3. Video quick retrieval module

[0048] 3.1 Hardware Design

[0049] Video surveillance equipment: High-definition intelligent video surveillance cameras are installed every 500 meters along the entire highway. These cameras have automatic focusing, intelligent tracking and high-definition image acquisition functions, which can clearly capture the traffic conditions on the highway. Each camera is equipped with a high-precision GPS positioning module to obtain its own accurate geographic location information in real time;

[0050] Network transmission equipment: Connect various video surveillance devices to the storage server of the traffic police command center through the optical fiber network to achieve high-speed and stable transmission of video data. At the same time, 4G or 5G wireless communication modules are equipped as backup transmission channels to deal with emergencies such as optical fiber network failures to ensure that video data will not be lost;

[0051] Storage server: A high-performance storage server is set up in the traffic police command center. It uses a large-capacity disk array and has the ability to store massive data. It can save the video data collected by various video surveillance devices for a long time. The server is also equipped with a data backup and recovery system to back up data regularly to prevent data loss.

[0052] 3.2 Working Principle

[0053] Each video surveillance device has accurate geographical location information recorded in the system, such as "X kilometers on a certain road section". There are multiple groups of vibration alarm units and disconnection trigger alarm units distributed between every two video surveillance devices. When the vibration alarm unit or disconnection trigger alarm unit triggers an alarm, the alarm information it sends contains the location information of the video surveillance devices before and after. After receiving the alarm signal, the central management module quickly retrieves the video data of the corresponding video surveillance device before and after the accident from the storage server based on this location information, and displays it on the large screen of the command center for the staff to judge the accident situation;

[0054] 4. Center management module

[0055] 4.1 Hardware Design

[0056] Server: A high-performance server is used as the hardware carrier of the central management module. The server has powerful computing and data processing capabilities, can process multiple alarm signals at the same time, and interact with the Sky Eye system of the traffic police command center;

[0057] Communication interface: The server is equipped with a variety of communication interfaces, including Ethernet interface, serial port, etc., to achieve stable connection with the vibration alarm module, disconnection trigger alarm module, video quick retrieval module and the Sky Eye system of the traffic police command center;

[0058] 4.2 Software Design

[0059] Alarm information receiving and processing program: responsible for receiving alarm signals from the vibration alarm module and the disconnection trigger alarm module, analyzing the signals, extracting key data such as location information, and feeding back the alarm information to the Sky Eye system of the traffic police command center in a specific format, and displaying a text box such as "a collision alarm was issued between km and km of a certain section of road" on the Sky Eye system, i.e. the large screen of the command center;

[0060] Video call control program: When the command center personnel click on the alarm text box, the program responds quickly, obtains the corresponding video data from the video quick retrieval module according to the location information in the alarm information, and displays it on the large screen of the command center. At the same time, two text boxes, "Accident Rescue" and "Abnormal Maintenance", are generated below the video playback interface;

[0061] Linkage control program: According to the operation of the command center personnel clicking the "accident rescue" or "abnormal maintenance" text box, the rescue resources and maintenance linkage modules of the traffic police command center are connected to start the rescue work and arrange the maintenance tasks;

[0062] 4.3 Working Principle

[0063] As the core hub of the entire system, the central management module receives alarm signals from the vibration alarm module and the disconnection trigger alarm module in real time. After receiving the alarm signal, it quickly processes and analyzes it and transmits the alarm information to the Sky Eye system of the traffic police command center. When the command center personnel view the video by clicking the text box, the central management module coordinates the video quick retrieval module to display the relevant video. According to the subsequent operations of the personnel, the central management module further links with the rescue system and maintenance linkage module of the traffic police command center to realize the corresponding processing flow;

[0064] 4.3.1. “Accident rescue”

[0065] When the command center personnel click on the alarm text box and view the accident-related video materials displayed in the video quick retrieval module, they will determine that a traffic accident has indeed occurred, such as a detained vehicle. At this time, they will click on the "Accident Rescue" text box, and the system will immediately rely on the Sky Eye system of the traffic police command center to quickly deploy surrounding traffic police, emergency, fire and other rescue resources. The Sky Eye system can provide real-time traffic information to help rescue personnel plan the best rescue route and arrive at the accident scene as quickly as possible. For example, by analyzing the congestion of surrounding roads, it can guide rescue vehicles to avoid congested sections and choose unobstructed roads to go to the accident site;

[0066] At the same time, the system connects to the maintenance linkage module and notifies the maintenance management platform to arrange equipment maintenance personnel to repair the guardrail damaged by the collision. The maintenance management platform assigns the maintenance work order to the nearest maintenance personnel with corresponding maintenance skills based on the accident location information, and sends them detailed maintenance task information so that the maintenance personnel can prepare the required maintenance tools and materials in advance.

[0067] By launching accident rescue in time, the life safety of the people at the accident site can be guaranteed to the greatest extent, and casualties and property losses can be reduced. At the same time, quickly arranging guardrail repairs will help restore the safety protection function of the highway as soon as possible, ensure the normal operation of subsequent traffic, and avoid secondary accidents caused by the failure to repair guardrail damage in time;

[0068] 4.3.2. “Abnormal maintenance”

[0069] After checking the video, the command center staff found that no traffic accident occurred, but the vibration alarm module or disconnection trigger alarm module issued an abnormal alarm due to equipment failure, environmental interference, etc. At this time, the "Abnormal Maintenance" text box will be clicked, and the system will directly connect to the maintenance linkage module to arrange maintenance personnel to go to the location of the abnormal alarm device for inspection and repair;

[0070] Timely handling of abnormal alarm situations can ensure that the highway guardrail collision alarm system is always in an accurate and reliable operating state, avoiding false alarms caused by equipment failures that interfere with normal traffic management work, and at the same time ensuring that the system can issue alarms in a timely and accurate manner when an accident actually occurs, providing effective technical support for highway safety management;

[0071] 5. Maintenance linkage module

[0072] 5.1 Hardware Design

[0073] Maintenance management platform server: Build a maintenance management platform based on cloud computing. The platform server has powerful data processing and storage capabilities and is used to manage maintenance work orders, maintenance personnel information, maintenance equipment information and other data;

[0074] Mobile terminal: Maintenance personnel are equipped with intelligent mobile terminals, such as tablet computers or smart phones. The mobile terminals are equipped with special maintenance management apps, which interact with the maintenance management platform server via wireless networks.

[0075] 5.2 Software Design

[0076] Work order management system: Receives maintenance task instructions from the central management module, automatically generates maintenance work orders based on alarm location, fault type and other information, and assigns the work orders to maintenance personnel who are closest to the accident site and have the corresponding maintenance skills. At the same time, the status of the work orders is tracked in real time, including the status of the work orders received, being processed, and completed;

[0077] Maintenance personnel management system: manage the basic information, skill level, working status, etc. of maintenance personnel, reasonably deploy maintenance personnel according to work order requirements, and ensure that maintenance tasks can be completed efficiently;

[0078] Maintenance equipment management system: records the information of equipment and tools required for maintenance, ensures that maintenance personnel can prepare the required equipment before performing tasks, and tracks and manages the use and maintenance of equipment;

[0079] 5.3 Working Principle

[0080] When the central management module sends a maintenance task to the maintenance linkage module according to the operation of the command center personnel, the work order management system of the maintenance management platform immediately generates a maintenance work order and pushes it to the appropriate maintenance personnel. The maintenance personnel receive the work order through the mobile terminal and view the detailed maintenance task information, including the accident location, fault type, etc. During the maintenance process on the on-site maintenance, the maintenance personnel can update the maintenance progress in real time through the mobile terminal. After the maintenance is completed, the maintenance personnel submit the maintenance results on the mobile terminal. The maintenance management platform reviews the maintenance results and closes the work order after confirming that they are correct.

[0081] In summary, the specific implementation process of the collision warning system of a highway guardrail of the present invention is as follows (taking a traffic accident as an example):

[0082] 1. Accident Occurrence and Sensor Module Response

[0083] When a serious collision occurs, the guardrail is hit hard and bends and deforms, squeezing the wires that disconnect the alarm unit, causing the wires to be disconnected from the early warning device. The microprocessor in the disconnected early warning device detects the change in line status and immediately starts the alarm program, sending an alarm signal to the central management module through the communication module. At the same time, the guardrail vibrates strongly, and the vibration sensor converts the mechanical vibration into an electrical signal, which is transmitted to the microcontroller. The microcontroller analyzes the signal. If the vibration intensity exceeds the preset threshold, it determines that the guardrail has been hit, and then sends an alarm signal to the central management module through the wireless communication module. The signal contains the location identification information of the early warning device.

[0084] 2. The central processing module receives and processes alarm information

[0085] After the server of the central management module receives the alarm signal, the alarm information receiving and processing program analyzes the signal, extracts key data such as location information, and feeds the alarm information in a specific format (such as "a collision alarm is issued between kilometers and kilometers of a certain road section") to the Sky Eye system of the traffic police command center, and displays the alarm text box on the large screen of the command center;

[0086] 3. Rapid video retrieval and accident judgment

[0087] After the command center personnel see the alarm text box, they click on it, and the video call control program responds quickly. According to the location information in the alarm information, the video quick retrieval module quickly retrieves the video data of the corresponding video surveillance equipment before and after the accident from the storage server, and displays it on the large screen of the command center. The command center personnel judge that a traffic accident has indeed occurred (such as serious damage to the vehicle, injuries, etc.) by viewing the video data;

[0088] 4. Accident rescue starts

[0089] After the command center personnel determine that an accident has occurred, they click the "Accident Rescue" text box. At this time, the system immediately relies on the Sky Eye system of the traffic police command center to quickly deploy surrounding traffic police, emergency, fire and other rescue resources. The Sky Eye system provides real-time traffic information to help rescue personnel plan the best rescue route, such as guiding rescue vehicles to avoid congested sections and choose unobstructed roads to the accident site, so as to arrive at the accident site as quickly as possible, ensure the safety of the lives of people at the accident site, and reduce casualties and property losses;

[0090] 5. Guardrail maintenance arrangements

[0091] At the same time, the system connects to the maintenance linkage module and notifies the maintenance management platform to arrange equipment maintenance personnel to repair the guardrail damaged by the collision. The maintenance management platform assigns the maintenance work order to the nearest maintenance personnel with corresponding maintenance skills based on the accident location information, and sends them detailed maintenance task information. The maintenance personnel prepare the necessary maintenance tools and materials in advance to restore the safety protection function of the highway as soon as possible to avoid secondary accidents caused by the failure to repair the damaged guardrail in time.

[0092] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A collision warning system for a highway guardrail, characterized in that: The system includes a vibration alarm module, a disconnection trigger alarm module, a video quick retrieval module, a center management module, and a maintenance linkage module; The vibration alarm module senses the vibration signal through the vibration sensor, and the microcontroller receives the vibration signal, compares the intensity of the vibration with the preset threshold, and uses the wireless communication module to send the alarm signal judged by the microcontroller to the central management module; The disconnection trigger alarm module includes an early warning device and a connecting wire, and the wire and the early warning device are connected by spot welding; The video quick retrieval module includes video monitoring equipment, network transmission equipment and storage server. The video monitoring equipment is installed every 500 meters and has automatic focusing, intelligent tracking and high-definition image acquisition functions. Each camera is equipped with a high-precision GPS positioning module. The network transmission equipment is connected through an optical fiber network and equipped with a wireless communication module as a backup. The storage server uses a large-capacity disk array and has a data backup and recovery system. The central management module includes an alarm information receiving and processing program, a video call control program, and a linkage control program. The alarm information receiving and processing program is responsible for receiving the alarm signal and feeding back the alarm information to the Sky Eye system of the traffic police command center in a specific format. The video call control program is responsible for obtaining the corresponding video data from the video quick retrieval module according to the location information in the alarm information. The linkage control program is responsible for connecting the rescue resources and maintenance linkage module of the traffic police command center to realize the start of rescue work and the arrangement of maintenance tasks. The maintenance linkage module includes a maintenance management platform server and a mobile terminal. The maintenance management platform server has powerful data processing and storage capabilities. The mobile terminal is installed with a special maintenance management APP, which interacts with the maintenance management platform server through a wireless network. The maintenance linkage module includes a work order management system, a maintenance personnel management system and a maintenance equipment management system.

2. A collision warning system for a highway guardrail as claimed in claim 1, characterized in that: The preset thresholds include a vibration intensity threshold, a vibration frequency threshold, and a duration threshold. That is, when the vibration intensity detected by the vibration sensor continuously exceeds the vibration intensity threshold within the duration threshold, and the vibration frequency exceeds the vibration frequency threshold within the duration threshold, the microcontroller determines that the guardrail has been collided and triggers an alarm.

3. A collision warning system for a highway guardrail as claimed in claim 1, characterized in that: The disconnection triggers the wires between adjacent early warning devices to be connected in a straight line, and the guardrail is hit violently to bend and deform, squeezing the wires to cause the wires to be disconnected from the early warning device to trigger an alarm.

4. A collision warning system for a highway guardrail as claimed in claim 1, characterized in that: The linkage control program includes displaying text boxes of "collision alarm is issued between km and km of a certain road section", "accident rescue" and "abnormal maintenance" on the Sky Eye system; The "collision alarm is issued between the kilometer position and the kilometer position of a certain road section" is a program for triggering the video quick retrieval module to obtain the corresponding video data; The "accident rescue" program is used to carry out accident rescue and connect the maintenance linkage module to repair damaged guardrails based on the Sky Eye system of the traffic police command center; The "abnormal maintenance" program is used to directly connect to the maintenance linkage module and arrange maintenance personnel to go to the location of the abnormal alarm equipment for inspection and maintenance.

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