A traffic construction site safety monitoring system and method

Abstract

The application discloses a traffic construction site safety monitoring system and method, the monitoring system comprises a plurality of traffic cones, a plurality of safety vests and a control center, the traffic cone comprises a prompt light module, a sound module, a vibration sensor, a distance sensor, a camera module, a position sensor, a communication module, a control module and a power module, each sound module has at least one angle-adjustable sound unit, the sound unit controls the direction, frequency, intensity and phase of sound, so that the sound of a specific side of an oncoming vehicle is strengthened according to the position and type of the oncoming vehicle. The application can effectively reduce the safety risk of the traffic construction site, avoid the damage of the oncoming vehicle to the construction personnel and instruments, effectively prompt the construction personnel to take emergency measures when danger is sensed or the oncoming vehicle collides with the construction site, and accurately and effectively remind the oncoming vehicle. Meanwhile, the modules are started in stages and in order, so that the system power consumption is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of transportation construction, specifically to a safety monitoring system and method for transportation construction sites. Background Technology

[0002] With the development of transportation infrastructure, modern transportation construction typically involves the repair of existing roads. These repairs are usually flexible and do not disrupt traffic flow. Traffic cones are important traffic safety facilities, widely used on highways, construction areas, and other traffic locations to warn, isolate, and guide traffic flow.

[0003] As an emerging safety device in intelligent transportation systems, smart traffic cones have gradually moved from concept to large-scale deployment in recent years, driven by technological advancements, policy guidance, and practical application needs. Smart traffic cones integrate high-brightness LED flashing lights, voice prompt modules, environmental sensors, and positioning systems to create a perceptible, communicative, and controllable intelligent node. Once deployed, these devices can upload their own status and surrounding environmental data to a management platform in real time, enabling dynamic perception and visual management of traffic control areas.

[0004] Currently, smart traffic cones are developing towards deeper levels of intelligence, networking, and automation. The equipment no longer operates in isolation, but rather serves as a link in the intelligent transportation network, building a collaborative transportation ecosystem of "people-vehicles-roads-cloud".

[0005] Although existing traffic cones have implemented the addition of sound modules to the cones to alert pedestrians or vehicles in a specific direction, they cannot provide dynamic alerts based on the real-time location of the approaching vehicle, nor can they flexibly adjust the triggering parameters according to the type of approaching vehicle. They lack specificity in terms of alert timing and module coordination, and do not differentiate the priorities of different areas and different traffic cones, thus failing to provide effective and timely warnings for approaching vehicles. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a safety monitoring system and method for transportation construction sites, which can effectively improve the safety of transportation construction sites.

[0007] This invention first provides a traffic construction site safety monitoring system, including multiple traffic cones, multiple safety vests, and a control center. Each traffic cone includes a warning light module, a sound module, a vibration sensor, a distance sensor, a camera module, a position sensor, a traffic cone communication module, a traffic cone control module, and a power module. The system is characterized by: the sound module having at least one angle-adjustable sound output unit, which controls the direction, frequency, intensity, and phase of the sound; the sound modules, position sensors, camera modules, and distance sensors of multiple traffic cones working collaboratively; the position sensors locating the traffic cones; the camera module and distance sensor determining the position and type of oncoming vehicles; and at least one sound output unit of each working sound module emitting sound, amplifying the sound on a specific side of the oncoming vehicle based on its position and type.

[0008] Furthermore, vibration sensors are installed near the road surface of the traffic cones. When the vibration sensors detect a specific vibration wave, the distance sensors of multiple traffic cones are activated. The distance sensors detect the distance between the oncoming vehicle and the traffic cones, and the multiple traffic cones determine the position of the oncoming vehicle based on the triangulation method.

[0009] Furthermore, when the distance sensor of the traffic cone is activated, the position sensor of the corresponding traffic cone is also activated simultaneously, thereby more accurately determining the position of oncoming vehicles.

[0010] Furthermore, the position of the approaching vehicle is determined based on the position sensor and distance sensor, and then multiple traffic cones that the sound module operates are selected according to the position of the approaching vehicle.

[0011] Furthermore, the specific side of the approaching vehicle is the side closer to the construction site, and the area of ​​sound amplification changes as the approaching vehicle moves.

[0012] Furthermore, the camera module determines the type of approaching vehicle, and the frequency and intensity of the sound emitted by the sound unit are determined based on the type of approaching vehicle, thereby providing effective and safe alerts for various types of approaching vehicles.

[0013] Furthermore, safety vests are worn by construction workers. The safety vests are equipped with vibration devices on the left chest, right chest, left shoulder, right shoulder, left back, and right back. The safety vests also have a voice prompt module and left and right arrow directional lights on the outer surface. When an oncoming vehicle poses a danger to the construction workers, the control center sends a warning message to the safety vest, which activates the vibration device, left arrow directional light, and left-direction voice prompt on the left side, or the vibration device, right arrow directional light, and right-direction voice prompt on the right side, thereby reminding the construction workers to move to the left or right side of the road.

[0014] Furthermore, the control center stores a collision risk model. Real-time data on the type of oncoming vehicle, its lane, speed, and weather conditions are input into the collision risk model to determine the risk level of the oncoming vehicle. When the collision risk level is high or medium, distance sensors and position sensors detect the position of the oncoming vehicle in real time, the camera module continuously monitors the oncoming vehicle, and the sound modules of multiple traffic cones are activated to amplify the sound on a specific side of the oncoming vehicle, thereby alerting the oncoming vehicle to the location of the construction site.

[0015] This invention further provides a method for safety monitoring at traffic construction sites, which is applied to a traffic construction site safety monitoring system, and involves placing multiple traffic cones in an upstream transition zone, a buffer zone, a work zone, and a downstream transition zone; characterized in that: When the vibration sensor of the traffic cone in the upstream transition zone detects a specific vibration wave, the distance sensor of the traffic cone in the upstream transition zone is activated. Multiple traffic cones use distance sensors to detect the lane, speed, and trajectory of approaching vehicles; If the lane of the oncoming vehicle is different from the lane where the construction is being carried out, the warning light module of the traffic cone in the upstream transition area will be activated, and the warning light will flash at the first frequency to remind the oncoming vehicle that the lane of the work area is located. If the lane where the oncoming vehicle is located is the same as the lane where the construction is located, determine the first speed at the first time point, the lane where the oncoming vehicle is located, the second speed at the second time point, and the lane where the oncoming vehicle is located. If the difference between the second speed and the first speed is greater than the first threshold or the oncoming vehicle leaves the lane where the construction is located, the indicator light will light up sequentially from the beginning to the end of the upstream transition zone and flash at the second frequency. If the difference between the second speed and the first speed is less than or equal to the first threshold and the oncoming vehicle has not left the lane where the construction is taking place, the warning light will flash at the third frequency, and the sound modules of multiple traffic cones will be activated to amplify the sound on a specific side of the oncoming vehicle according to its location and type. When a vehicle passes through the buffer zone and work area, the distance sensors, camera modules, and position sensors of multiple traffic cones in the buffer zone and work area are activated to obtain the vehicle type, speed, and lane of the approaching vehicle. The approaching vehicle type, speed, lane, and weather data are then input into the collision risk model to obtain the collision risk level, which is divided into three levels: high, medium, and low. When the collision risk level is high or medium, the distance sensors and position sensors monitor the position of the approaching vehicle in real time, the camera module continuously monitors the approaching vehicle, and the sound modules of multiple traffic cones are activated. By controlling the direction, frequency, phase, and intensity of the sound emitted by the sound-emitting units, the sound is amplified on a specific side of the approaching vehicle, thereby reminding the approaching vehicle of the construction location and preventing it from entering the work area.

[0016] Furthermore, if the traffic cone in the upstream transition zone senses that the distance between the traffic cone and the oncoming vehicle is less than the second threshold, the camera module is activated. The camera module determines the collision position between the traffic cone and the oncoming vehicle and the vehicle information. By analyzing the collision positions of multiple traffic cones and oncoming vehicles, the trajectory of the oncoming vehicle is determined. When the construction area is located on the trajectory, the control center sends a warning message to the safety vest.

[0017] Based on the above technical solution, the present invention achieves the following beneficial effects: 1. By using multiple traffic cones with sound modules, position sensors, camera modules, and distance sensors working together, the sound is amplified on the side of the vehicle approaching the construction area, causing drivers to subconsciously move away from the construction area and effectively avoiding conflicts between vehicles and construction.

[0018] 2. By sensing the risk level of approaching vehicles, timely alerts are issued to vehicles with potential risks, improving the targeting and effectiveness of these alerts.

[0019] 3. Select multiple traffic cones for the sound module to operate based on the location of oncoming vehicles, as well as the sound output direction and phase of the sound module, thereby effectively avoiding sound loss caused by long-distance sound transmission.

[0020] 4. Based on the type of oncoming vehicle, determine the required sound intensity and frequency, and identify the traffic cones where the sound module needs to be activated, thereby flexibly adjusting the sound intensity on a specific side of the oncoming vehicle.

[0021] 5. Different judgment rules are set for different areas, and the corresponding module is only activated when there is a risk of collision, thereby avoiding waste of power consumption. Attached Figure Description

[0022] It should be understood that the accompanying drawings only depict typical embodiments of the present invention and should therefore not be considered as a limitation on the scope of protection. The present invention will be described and explained in detail with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of traffic cone placement at a traffic construction site according to the present invention; Figure 2 This is a schematic diagram of the security monitoring system of the present invention; Figure 3 This is a schematic diagram of the traffic cone module of the present invention; Figure 4 This is a schematic diagram of the security vest module of the present invention; Figure 5-6 This is a flowchart of the upstream transition zone safety monitoring method of the present invention; Figure 7-8 This is a flowchart of the buffer and work area security monitoring method of the present invention. Detailed Implementation

[0023] The techniques described below can be modified in various ways and have multiple embodiments, which are described in detail below with reference to the accompanying drawings. However, this does not mean that the techniques described below are limited to the specific embodiments. It should be understood that the present invention includes all similar modifications, equivalents, and substitutions without departing from the spirit and scope of the techniques described below.

[0024] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of this invention, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when".

[0026] Combination Figure 1-4 The present invention describes the safety monitoring system for transportation construction sites.

[0027] The safety monitoring system at the construction site of the transportation project includes multiple traffic cones, multiple safety vests, and a control center.

[0028] The traffic cone includes a warning light module, a sound module, a vibration sensor, a distance sensor, a camera module, a position sensor, a traffic cone communication module, a traffic cone control module, and a power supply module.

[0029] The traffic cone control module is electrically connected to the indicator light module, sound module, vibration sensor, distance sensor, camera module, position sensor, traffic cone communication module, and power supply module. The traffic cone communication module is wirelessly connected to the control center.

[0030] The indicator light module is activated according to the instructions of the traffic cone control module to indicate oncoming vehicles.

[0031] The sound module has at least one angle-adjustable sound output unit, and each sound output unit controls the direction, frequency, phase and intensity of the sound output according to the instructions of the traffic cone control module.

[0032] Furthermore, the adjustable angle of each sound output unit in the sound module is different. For example, the adjustable angle of the sound output unit on the side furthest from the working area is larger.

[0033] The angle of the sound unit is adjustable, thereby precisely controlling the direction of sound emission, and the direction and phase of sound emission can be changed according to the position of oncoming vehicles.

[0034] When there are multiple sound output units, the sound of multiple approaching vehicles can be amplified on a specific side as needed.

[0035] Vibration sensors can detect the vibrations of oncoming vehicles on the road surface.

[0036] Distance sensors can detect the distance between an oncoming vehicle and a traffic cone.

[0037] The camera module can capture images of oncoming vehicles to determine their information, including vehicle type, collision location, and shape.

[0038] Position sensors can locate the position of traffic cones.

[0039] The traffic cone communication module is able to transmit data with the control center.

[0040] The traffic cone control module can control all the modules of the traffic cone.

[0041] The power module can supply power to each module of the traffic cone.

[0042] Vibration sensors are placed near the road surface of traffic cones to sense vibrations from the road surface. The vibration waves sensed by the vibration sensors from the natural environment are different from those from oncoming vehicles. The vibration waves formed by the vibration of the oncoming vehicle itself and the vibration between the vehicle and the road surface are significantly different from the vibration waves from the natural environment. For example, when the traffic cone is blown by the wind, the vibration waves sensed by the vibration sensor have a lower frequency.

[0043] Other modules are only activated when the vibration sensor detects a specific wave, thus avoiding the waste of power caused by the system constantly running.

[0044] By using distance sensors on at least two traffic cones to locate oncoming vehicles, and employing triangulation to determine the lane in which the vehicle is positioned, the method can accurately pinpoint the location of oncoming vehicles. At regular time intervals, the distance sensors on at least two traffic cones are used to locate oncoming vehicles, thereby obtaining information such as the vehicle's speed, lane, and trajectory.

[0045] When the distance sensor is activated, the position sensors of the traffic cones are activated simultaneously to determine the position information of the traffic cones. Based on the position of the traffic cones, the relative position information between the oncoming vehicle and the traffic cones can be accurately determined, avoiding the influence of the displacement of the traffic cones on the measurement results.

[0046] Based on the location and type of the approaching vehicle, the traffic cones whose sound modules need to be activated are identified. The sound output units of these traffic cones emit sounds with specific direction, frequency, phase, and intensity. The sounds emitted by multiple traffic cone sound output units interfere with each other and are amplified in specific areas, thereby reminding the approaching vehicle of the location of the work area.

[0047] When the sound module is activated, the position sensors of the traffic cones are kept in working condition to determine the position information of the traffic cones. Based on the position information of the traffic cones, the sound output direction, frequency, phase and intensity of the sound unit are determined to avoid the displacement of the traffic cones causing the sound to be unable to be amplified at a specific location, thereby affecting the warning effect on oncoming vehicles.

[0048] When necessary, the distance sensor of the traffic cone determines the position of the oncoming vehicle in real time, and the sound enhancement area created by the sound module is located on the side of the oncoming vehicle that is closer to the work area. The sound enhancement area changes as the position of the oncoming vehicle changes, thereby ensuring that dangerous vehicles can be effectively alerted throughout the entire process of passing through the work area.

[0049] When a vehicle collides with a traffic cone, the sound module emits a sound of the highest intensity to alert the vehicle to the collision and to remind it to quickly avoid the work area.

[0050] The camera module determines the type of approaching vehicle, and based on that, it determines the frequency and intensity of the sound emitted by the speaker unit, thus providing effective and safe alerts for various types of vehicles. For cars, which are relatively quiet, a low volume of sound is sufficient for an effective alert. For large trucks, which are significantly noisier, a higher volume and higher frequency of sound are required for an effective alert.

[0051] The traffic cones whose sound modules operate are adjusted according to the position of oncoming vehicles, thus avoiding sound loss due to greater distances. The sound modules of traffic cones closer to the vehicles can provide effective reminders with less energy consumption.

[0052] The control center determines the location of the required sound enhancement area in real time based on the location and type of the approaching vehicle, thus accurately identifying the sound enhancement area.

[0053] In this application, by combining a distance sensor, a camera module, a position sensor, and a sound module, the approaching vehicle is no longer treated as a point, but as a block with a certain volume. Through the distance sensor and the camera module, the block of the approaching vehicle is accurately identified, and then the sound enhancement area on one side of the block is determined, effectively reminding the approaching vehicle of the location of the working area.

[0054] When the distance between an oncoming vehicle and a traffic cone is small, an imminent collision occurs. The control center combines the distance sensor data from the traffic cone to the oncoming vehicle with the image of the vehicle captured by the traffic cone's camera module. This allows them to determine the impending impact point, which could be the left or right side of the vehicle's front, or a more specific location. By combining the impact points determined by the camera modules and distance sensors of multiple traffic cones with the monitoring data from the position sensor of the cone at the point of impact, the trajectory of the oncoming vehicle can be more accurately determined. Based on the trajectory of the oncoming vehicle at the moment of impact, the vehicle's reaction can be assessed, allowing for an accurate assessment of whether construction workers need to stop and take cover.

[0055] In the event of a collision between a vehicle and a traffic cone, if the vehicle's trajectory is away from the traffic cone, the construction workers do not need to stop working. However, if the vehicle's trajectory is towards the work area, the construction workers must be reminded to move to the left or right side of the road to ensure their safety.

[0056] The control center stores a collision risk model. Based on real-time data on approaching vehicle type, lane, speed, and weather conditions, the model determines the risk level of each approaching vehicle. Based on this risk level, corresponding warnings and response measures are then provided.

[0057] Traffic cones are placed on the road surface in an array according to national standards to delineate the construction area, forming an upstream transition zone, a buffer zone, a work zone, and a downstream transition zone according to the standards.

[0058] The safety vest includes a left and right arrow indicator light, a vibration device, a voice prompt module, a position sensor, a safety vest communication module, a safety vest control module, and a power module.

[0059] Safety vests can be worn by construction workers. The vests are equipped with vibration devices on the left chest, right chest, left shoulder, right shoulder, left back, and right back. They also feature a voice prompt module and left and right directional arrow lights on the outer surface. When an oncoming vehicle poses a danger to the construction worker, the control center sends a warning message to the vest, activating the vibration device on the left, the left directional arrow light, and a voice prompt indicating leftward movement, or the vibration device on the right, the right directional arrow light, and a voice prompt indicating rightward movement. This alerts the worker to move to the left or right side of the road, guiding them to a safe location based on the sensed danger zone.

[0060] The safety vest control module is electrically connected to the left arrow indicator light, right arrow indicator light, vibration device, voice prompt module, position sensor, safety vest communication module, and power supply module. The safety vest control module communicates wirelessly with the control center.

[0061] The left and right arrow indicator lights illuminate to visually alert and guide nearby construction workers.

[0062] The vibration device can generate vibrations, thereby providing tactile reminders and guidance to the construction workers.

[0063] The voice prompt module can provide emergency evacuation voice prompts, thus giving auditory reminders and guidance to the construction workers themselves and nearby construction workers.

[0064] Position sensors locate the position of construction workers and determine whether they are in or approaching a safe area.

[0065] The secure vest communication module enables data transmission between the device and the control center.

[0066] The safety vest control module can control the various modules of the safety vest, and the power module can supply power to the various modules of the safety vest.

[0067] Combination Figure 5-8 The present invention describes a method for safety monitoring at transportation construction sites, including: Traffic cones and safety vests should be grouped before use, and traffic cones and safety vests used in the same construction area should be grouped together.

[0068] When the vibration sensor of the traffic cone in the upstream transition zone detects a specific vibration wave, the distance sensor of the traffic cone in the upstream transition zone is activated.

[0069] Multiple traffic cones use distance sensors to detect the lane, speed, and trajectory of oncoming vehicles.

[0070] If the lane of the approaching vehicle is different from the lane of the work area, the warning light module of the traffic cone in the upstream transition area will be activated, and the warning light will flash at the first frequency to remind the approaching vehicle that the lane of the work area is located.

[0071] If the lane of the oncoming vehicle is the same as the lane of the work area, determine the first speed at the first time point, the lane of the oncoming vehicle, and the second speed at the second time point, with the first time point preceding the second time point. If the difference between the second speed and the first speed is greater than the first threshold, or if the oncoming vehicle leaves the lane of the work area, it is determined that the oncoming vehicle has noticed the work area, has reduced its speed, or has completed a lane change. If the oncoming vehicle has noticed the work area, the indicator lights will illuminate sequentially from the beginning to the end of the upstream transition zone and flash at the second frequency.

[0072] If the difference between the second speed and the first speed is less than or equal to the first threshold and the vehicle has not left the lane where the work area is located, the warning light flashes at the third frequency to remind oncoming vehicles that the work area is located. At the same time, the sound modules, camera modules, distance sensors, and position sensors of multiple traffic cones are activated. By controlling the direction, frequency, phase, and intensity of the sound emitted by each sound module, the sound is amplified on the side of the oncoming vehicle that is close to the work area, thereby effectively reminding the oncoming vehicle of the location of the work area. The amplified sound also causes the driver of the oncoming vehicle to subconsciously leave the lane where the work area is located.

[0073] If the traffic cone in the upstream transition zone senses that the distance between the traffic cone and an oncoming vehicle is less than the second threshold (a collision is imminent), the camera module is activated. The camera uses its capabilities to determine the collision location between the traffic cone and the oncoming vehicle, along with the vehicle's information. By analyzing the collision locations of multiple traffic cones and oncoming vehicles, the vehicle's trajectory is determined. If the construction area is on this trajectory, the control center sends a warning message to the safety personnel, prompting them to dodge to the left or right side of the road.

[0074] Establish a collision risk model, including: S1. Acquire historical data, including vehicle type, speed, lane, weather, and collision information with traffic cones, and establish a database; S2. Preprocess the historical data in the database; S3. Train the model using the preprocessed data; S4. Model evaluation: Establish a collision risk model.

[0075] When a vehicle passes through the buffer zone or work zone, the distance sensors and cameras of the traffic cones in the buffer zone and work zone are activated to obtain the vehicle type, speed, and lane information. The control center inputs the vehicle type, speed, lane information, and weather data into the collision risk model to obtain the collision risk level, which is divided into three levels: high, medium, and low.

[0076] When the collision risk level is high or medium, the distance sensor monitors the position of oncoming vehicles in real time, and the sound modules of multiple traffic cones are activated. By controlling the direction, frequency, phase, and intensity of each sound module, the sound is amplified on the side of the oncoming vehicle that is close to the work area, thereby reminding the oncoming vehicle of the location of the work area and preventing it from entering the work area.

[0077] When the collision risk level is high and the trajectory of an oncoming vehicle detected by the distance sensor intersects with the work area, the control center uses safety vests to remind construction workers to dodge to the left or right of the road to warn them of the danger of oncoming vehicles.

[0078] When the distance between any traffic cone in the buffer zone or work area and an oncoming vehicle is less than the second threshold, the traffic cone communication module directly sends a command to the safety vest, reminding the construction workers to move away from the traffic cone in the work area.

[0079] Simultaneously, at least one traffic cone in the downstream transition zone activates its camera module, distance sensor, and position sensor to record image and distance data of oncoming vehicles passing through the buffer zone and work area. When the sound module is activated, the corresponding traffic cone's position sensor is also activated. Using the position information obtained from the position sensor, the sound direction, frequency, phase, and intensity of the sound modules on multiple traffic cones are corrected, thereby avoiding incorrect positioning of the sound amplification area due to improper placement of traffic cones.

[0080] When the distance between the safety vest and the traffic cone is less than or equal to the third threshold, the positioning sensor and distance sensor of the traffic cone are activated. The construction area is fitted based on the positioning positions of all traffic cones, and it is determined whether the safety vest is within the fitted construction area. If it is outside the construction area, the safety vest will issue a warning to avoid false alarms due to displacement of individual traffic cones.

[0081] This invention effectively reduces safety risks at traffic construction sites, preventing injuries to construction workers and equipment from oncoming vehicles. It also effectively alerts construction workers when danger is detected or when a vehicle collides with the construction site, preventing injury. Furthermore, the various functional modules of the traffic cone work together to accurately and effectively warn oncoming vehicles. The phased and orderly activation of each module avoids wasted power consumption, solving the problems of high energy consumption, limited functionality, and ineffective risk prevention in existing safety monitoring systems.

[0082] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it. The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Other changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention are still included within the scope of protection of the present invention.

Claims

1. A safety monitoring system for a traffic construction site, comprising multiple traffic cones, multiple safety vests, and a control center, wherein each traffic cone includes a warning light module, a sound module, a vibration sensor, a distance sensor, a camera module, a position sensor, a traffic cone communication module, a traffic cone control module, and a power supply module, characterized in that: The sound module has at least one angle-adjustable sound output unit, which controls the direction, frequency, intensity, and phase of the sound. Multiple traffic cone sound modules, position sensors, camera modules, and distance sensors work together. The position sensors locate the traffic cones, and the camera modules and distance sensors determine the position and type of oncoming vehicles. At least one sound output unit of each working sound module emits sound, which amplifies the sound on a specific side of the oncoming vehicle according to its position and type. The system identifies the side of the approaching vehicle closest to the construction site, and the sound amplification area changes as the vehicle moves. The camera module determines the type of approaching vehicle, and based on this, the frequency and intensity of the sound emitted by the sound-emitting unit are determined, providing effective and safe alerts for various types of vehicles. Position and distance sensors determine the location of the approaching vehicle, and multiple traffic cones with sound modules are selected based on this location. The sounds emitted by the sound-emitting units of these multiple traffic cones interfere with each other and are amplified in a specific area, thus alerting the approaching vehicle to the location of the work area. When the sound module is started, the position sensors of multiple traffic cones that continuously maintain the operation of the sound module are in working state. Based on the position information of the traffic cones determined by the position sensors, the sound output direction, frequency, phase and intensity of the sound output units of multiple traffic cones are corrected, thereby avoiding the incorrect position of the sound enhancement area due to improper placement of traffic cones.

2. The safety monitoring system for transportation construction sites as described in claim 1, characterized in that: Vibration sensors are placed near the road surface of the traffic cones. When the vibration sensors detect a specific vibration wave, the distance sensors of multiple traffic cones are activated. The distance sensors detect the distance between the oncoming vehicle and the traffic cones, and the multiple traffic cones determine the position of the oncoming vehicle based on the triangulation method.

3. The safety monitoring system for transportation construction sites as described in claim 2, characterized in that: When the distance sensor of the traffic cone is activated, the position sensor of the corresponding traffic cone is also activated simultaneously, thereby more accurately determining the position of oncoming vehicles.

4. The safety monitoring system for transportation construction sites as described in claim 1, characterized in that: Safety vests are worn by construction workers. The vests are equipped with vibration devices on the left chest, right chest, left shoulder, right shoulder, left back, and right back. The safety vests also have a voice prompt module and left and right arrow directional lights on the outer surface. When an oncoming vehicle poses a danger to the construction workers, the control center sends a warning message to the safety vest, which activates the vibration device, left arrow directional light, and left-direction voice prompt on the left side, or the vibration device, right arrow directional light, and right-direction voice prompt on the right side, thereby reminding the construction workers to move to the left or right side of the road.

5. The safety monitoring system for transportation construction sites as described in claim 1, characterized in that: The control center stores a collision risk model and inputs real-time data on oncoming vehicle type, lane, speed, and weather into the collision risk model to determine the risk level of oncoming vehicles. When the collision risk level is high or medium, the distance sensor and position sensor detect the position of the approaching vehicle in real time, the camera module continuously monitors the approaching vehicle, and the sound modules of multiple traffic cones are activated to amplify the sound on a specific side of the approaching vehicle, thereby reminding the approaching vehicle of the location of the construction site.

6. A method for safety monitoring at a traffic construction site, comprising using the traffic construction site safety monitoring system according to any one of claims 1-5, wherein multiple traffic cones are placed in an upstream transition zone, a buffer zone, a work zone, and a downstream transition zone; characterized in that: When the vibration sensor of the traffic cone in the upstream transition zone detects a specific vibration wave, the distance sensor of the traffic cone in the upstream transition zone is activated. Multiple traffic cones use distance sensors to detect the lane, speed, and trajectory of approaching vehicles; If the lane of the oncoming vehicle is different from the lane where the construction is being carried out, the warning light module of the traffic cone in the upstream transition area will be activated, and the warning light will flash at the first frequency to remind the oncoming vehicle that the lane of the work area is located. If the lane where the oncoming vehicle is located is the same as the lane where the construction is located, determine the first speed at the first time point, the lane where the oncoming vehicle is located, the second speed at the second time point, and the lane where the oncoming vehicle is located. If the difference between the second speed and the first speed is greater than the first threshold or the oncoming vehicle leaves the lane where the construction is located, the indicator light will light up sequentially from the beginning to the end of the upstream transition zone and flash at the second frequency. If the difference between the second speed and the first speed is less than or equal to the first threshold and the oncoming vehicle has not left the lane where the construction is taking place, the warning light will flash at the third frequency, and the sound modules of multiple traffic cones will be activated to amplify the sound on a specific side of the oncoming vehicle according to its location and type. When a vehicle passes through the buffer zone and work area, the distance sensors, camera modules, and position sensors of multiple traffic cones in the buffer zone and work area are activated to obtain the vehicle type, speed, and lane of the approaching vehicle. The approaching vehicle type, speed, lane, and weather data are then input into the collision risk model to obtain the collision risk level, which is divided into three levels: high, medium, and low. When the collision risk level is high or medium, the distance sensors and position sensors monitor the position of the approaching vehicle in real time, the camera module continuously monitors the approaching vehicle, and the sound modules of multiple traffic cones are activated. By controlling the direction, frequency, phase, and intensity of the sound emitted by the sound-emitting units, the sound is amplified on a specific side of the approaching vehicle, thereby reminding the approaching vehicle of the construction location and preventing it from entering the work area.

7. The method for safety monitoring at transportation construction sites as described in claim 6, characterized in that: If the traffic cone in the upstream transition zone senses that the distance between the traffic cone and the oncoming vehicle is less than the second threshold, the camera module is activated. The camera module determines the collision position between the traffic cone and the oncoming vehicle and the vehicle information. By analyzing the collision positions of multiple traffic cones and oncoming vehicles, the trajectory of the oncoming vehicle is determined. When the construction area is located on the trajectory, the control center sends an early warning message to the safety vest.

Images