Intelligent primary and secondary early warning system and early warning method for expressway construction personnel safety

Abstract

The present application belongs to the field of expressway construction zone traffic accident prevention technology, and particularly relates to an intelligent child-parent early warning system and method for expressway construction personnel safety. The intelligent child-parent early warning system can early warn the drivers of vehicles upstream of the construction zone, and simultaneously adds an automatic intelligent monitoring and early warning mobile robot in the child module to early warn the construction personnel in real time. According to the distribution of the construction personnel, the optimal early warning effect is ensured, the defect that the early warning system fails to function due to the negligence of the drivers to the early warning information is made up, the effectiveness of the early warning system is improved, and thus the life safety of the construction personnel is ensured. The devices contained in the early warning system can be reused, the intelligent monitoring and early warning mobile robot is easy to operate, does not need to be manually moved, can automatically follow the overall back-and-forth movement of the construction personnel, the early warning range always follows the position change of the construction personnel, and the early warning reliability is high.

Description

Technical Field

[0001] This invention belongs to the field of traffic accident prevention technology in highway construction areas, specifically relating to an intelligent parent-child early warning system and early warning method for the safety of highway construction workers. Background Technology

[0002] As highways age, their performance gradually declines. Without timely maintenance, severe damage can occur, significantly increasing the risk of traffic accidents. Highway maintenance requires work to be carried out without disrupting traffic. However, the establishment of construction zones reduces the number and width of lanes, leading to sudden changes in the driving environment. This necessitates drivers changing lanes in advance. When drivers experience fatigue, distraction, or impaired perception due to the complex environment surrounding the construction zone, they may be unable to promptly detect and identify safety facilities and take appropriate measures. This can cause them to mistakenly enter the construction zone, resulting in collisions and seriously threatening the lives of construction workers.

[0003] In existing technologies, construction areas are typically fenced off with safety facilities to create temporary isolation zones. Construction signs, reflective cones, and other safety equipment are used to display patterns, lights, and text indicating reduced lanes and prompting passing vehicles to slow down. However, this approach lacks intrusion detection and proactive warnings to construction workers, limiting its effectiveness. Alternatively, a passive safety warning system can be used. This system detects vehicles entering the construction zone using collision detection devices. Wireless communication transmits this information to a control unit, which then activates information boards and alarm devices. If a vehicle has collided with the detection device, it must be manually reset to maintain continuous detection. This approach is inconvenient, costly, and poses safety risks. Another option is an active safety warning system. This system detects whether vehicles upstream can safely change lanes to leave the construction zone, assessing the risk of vehicles entering. When a risk is detected, it warns the driver. However, this system is less effective when the construction section is long and wide, making it difficult to warn construction workers. If the warning is ignored by the driver, the risk of intrusion remains. In summary, existing construction area early warning systems do not consider the safety of construction workers and fail to promptly convert danger information into alarm messages to transmit to them, so that they can take preventative measures in advance and provide multiple safeguards for construction safety.

[0004] To address the aforementioned issues, this invention proposes an intelligent parent-child early warning system for highway construction zones. In addition to providing early warnings to drivers upstream of the construction zone, it also incorporates on-site monitoring and early warning equipment to detect potential intrusion risks in advance, thereby alerting construction workers and ensuring their operational safety.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intelligent parent-child early warning system and method for the safety of highway construction workers. By issuing early warnings to drivers upstream of the construction area, the system also adds on-site monitoring and early warning equipment in the construction area to detect the risk of accidental entry in advance and issue early warnings to construction workers, thereby ensuring their work safety.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] On the one hand, the present invention provides an intelligent parent-child early warning system for the safety of highway construction workers, including a parent module for detecting the movement status of target vehicles and issuing corresponding early warning information to the driver of the target vehicles based on the movement status of the target vehicles, and a sub-module for adjusting its own distance from the construction workers based on real-time monitoring of the construction workers' positions and issuing corresponding early warning information to the construction workers based on the detection results received from the parent module.

[0009] Specifically, the parent module includes an embedded industrial control computer, which is connected via a CAN bus server to a millimeter-wave radar for detecting the movement status of the target vehicle, a first high-pitched directional horn and a first strobe warning light to alert the driver of the target vehicle, a first power supply for powering the parent module, and a first wireless module for communicating with the sub-modules; the first power supply is connected to the embedded industrial control computer, the millimeter-wave radar, the first high-pitched directional horn, the first strobe warning light, and the first wireless module respectively.

[0010] Specifically, the submodule includes a second power supply for powering the system, a locator for providing real-time location information of construction personnel, the second power supply being connected to an intelligent monitoring and early warning mobile robot that moves freely on the highway guardrail and adjusts its position according to the information received from the locator, a second wireless module for communicating with the main module, a second high-volume directional speaker to prompt construction personnel to evacuate, and a second flashing warning light.

[0011] Specifically, the intelligent monitoring and early warning mobile robot includes a connecting device with the highway guardrail as a guide rail, and a control module that adjusts its position according to the information received from the locator to achieve automatic forward, reverse and stop movement; the control module is located above the connecting device, and a second high-volume directional speaker and a second flashing warning light are set on the outside of the control module and on the side facing the construction personnel.

[0012] On the other hand, the present invention provides an early warning method for the intelligent parent-child early warning system for the safety of highway construction workers as described above, the specific method of which is as follows:

[0013] Step 1: Place the mother module at the starting point of the construction area;

[0014] Step 2: Install the intelligent monitoring and early warning mobile robot on the highway guardrail and equip each construction worker with a locator;

[0015] Step 3: When the intelligent parent-child early warning system starts working, since the construction workers are on the move, the locator sends the real-time distance and location information between the construction workers and the intelligent monitoring and early warning mobile robot to the intelligent monitoring and early warning mobile robot. The data processing center of the intelligent monitoring and early warning mobile robot uses algorithms to analyze the distribution of the construction workers and moves to the optimal position on the guardrail in real time. The algorithm steps of the intelligent monitoring and early warning mobile robot data processing center are as follows:

[0016] Step 3.1: The intelligent monitoring and early warning mobile robot collects n distance data points from the construction workers' locators;

[0017] Step 3.2: Calculate the average value d and standard deviation σ of the above n distance data to obtain the overall characteristics of the above distance data, that is, the distribution of construction personnel;

[0018] Step 3.3: Determine an overall range that includes all the distance data mentioned above, and select the range of the average distance plus or minus twice the standard deviation [d-2σ, d+2σ].

[0019] Step 3.4: The center position of the above distance range [d-2σ, d+2σ] is the initial guess of the optimal distance between the intelligent monitoring and early warning mobile robot and the overall distance data, and then the optimal early warning position of the intelligent monitoring and early warning mobile robot is calculated.

[0020] Step 3.5: The intelligent monitoring and early warning mobile robot moves back and forth on the high-speed guardrail guide rail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusting the position of the intelligent monitoring and early warning mobile robot in real time based on this distance.

[0021] Step 3.6: When the position of the construction personnel changes, the intelligent monitoring and early warning mobile robot repeats steps 3.1-3.5, dynamically adjusting its position in real time to ensure that the position of the intelligent monitoring and early warning mobile robot on the highway guardrail produces the best early warning effect for the overall construction personnel.

[0022] Step 4: The millimeter-wave radar in the mother module collects the motion status information of target vehicles within 200m upstream of the lane occupied by the construction area, and analyzes the speed, distance, lane and other information of the target vehicles to determine whether there is a risk of the vehicle entering the lane.

[0023] Step 5: When the risk of the target vehicle breaking in is detected, the embedded industrial control computer in the mother module sends a command to the first high-pitched directional horn and the first flashing warning light through the CAN bus server, driving the first high-pitched directional horn and the first flashing warning light to send a warning message to the driver;

[0024] Step 6: After the main module sends a warning message to the driver of the target vehicle, if the driver of the target vehicle immediately leaves the construction lane, the main module will stop issuing warnings.

[0025] Step 7: If the target vehicle continues to travel on the construction lane after the parent module issues a warning, the parent module continues to issue warnings. At the same time, the embedded industrial control computer in the parent module sends a warning command to the intelligent monitoring and warning mobile robot in the sub-module through the CAN bus server. The intelligent monitoring and warning mobile robot drives the second high-pitched directional horn and the second flashing warning light installed on it to send a warning signal to the construction personnel.

[0026] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0027] This invention's intelligent parent-child early warning system can provide advance warnings to drivers of vehicles upstream of the construction area. Simultaneously, an automatic intelligent monitoring and early warning mobile robot is added to the sub-module to provide real-time warnings to construction workers. Based on the distribution of construction workers, it ensures optimal early warning effectiveness, compensating for the system's failure to function due to driver negligence, thus improving the system's effectiveness and protecting the lives of construction workers. Furthermore, all devices included in this invention's early warning system are reusable. The intelligent monitoring and early warning mobile robot is easy to operate, requiring no manual movement, and can automatically follow the construction workers' movements. The warning range always changes with the workers' location, ensuring high reliability of the warnings. Attached Figure Description

[0028] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a flowchart of the early warning method of the intelligent mother-child early warning system of the present invention. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0032] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] This embodiment provides an intelligent parent-child early warning system for the safety of highway construction workers, including a parent module for detecting the movement status of target vehicles and issuing corresponding early warning information to the target vehicle driver based on the movement status of the target vehicles, and a sub-module for adjusting its own distance from the construction workers based on real-time monitoring of the construction workers' positions and issuing corresponding early warning information to the construction workers based on the detection results received from the parent module.

[0035] Specifically, the mother module includes an embedded industrial control computer, which is connected via a CAN bus server to a millimeter-wave radar for detecting the motion status of the target vehicle, a first high-pitched directional horn and a first strobe warning light to alert the driver of the target vehicle, a first power supply for powering the mother module, and a first wireless module for communicating with the sub-modules.

[0036] Specifically, the submodule includes a second power supply for powering the system, a locator for providing real-time location information of construction personnel, the second power supply being connected to an intelligent monitoring and early warning mobile robot that moves freely on the highway guardrail and adjusts its position according to the information received from the locator, a second wireless module for communicating with the main module, a second high-volume directional speaker to prompt construction personnel to evacuate, and a second flashing warning light.

[0037] Specifically, the intelligent monitoring and early warning mobile robot includes a connecting device with a highway guardrail as a guide rail, and a control module that adjusts its position based on information received from the locator to achieve automatic forward, reverse, and stop movement.

[0038] See Figure 1 As shown in the figure, this embodiment also provides an early warning method for the intelligent parent-child early warning system for the safety of highway construction workers as described above. The specific method is as follows:

[0039] Step 1: Place the mother module at the starting point of the construction area;

[0040] Step 2: Install the intelligent monitoring and early warning mobile robot on the highway guardrail and equip each construction worker with a locator;

[0041] Step 3: When the intelligent parent-child early warning system starts working, since the construction workers are on the move, the locator sends the real-time distance and location information between the construction workers and the intelligent monitoring and early warning mobile robot to the intelligent monitoring and early warning mobile robot. The data processing center of the intelligent monitoring and early warning mobile robot uses algorithms to analyze the distribution of the construction workers and moves to the optimal position on the guardrail in real time.

[0042] The algorithm steps of the intelligent monitoring and early warning mobile robot data processing center are as follows:

[0043] Step 3.1: The intelligent monitoring and early warning mobile robot collects n distance data points from the construction workers' locators;

[0044] Step 3.2: Calculate the average value d and standard deviation σ of the above n distance data to obtain the overall characteristics of the above distance data, that is, the distribution of construction personnel;

[0045] Step 3.3: Determine an overall range that includes all the distance data mentioned above, and select the range of the average distance plus or minus twice the standard deviation [d-2σ, d+2σ].

[0046] Step 3.4: The center position of the above distance range [d-2σ, d+2σ] is the initial guess of the optimal distance between the intelligent monitoring and early warning mobile robot and the overall distance data, and then the optimal early warning position of the intelligent monitoring and early warning mobile robot is calculated.

[0047] Step 3.5: The intelligent monitoring and early warning mobile robot moves back and forth on the high-speed guardrail guide rail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusting the position of the intelligent monitoring and early warning mobile robot in real time based on this distance.

[0048] Step 3.6: When the position of the construction personnel changes, the intelligent monitoring and early warning mobile robot repeats steps 3.1-3.5, dynamically adjusting its position in real time to ensure that the position of the intelligent monitoring and early warning mobile robot on the highway guardrail produces the best early warning effect for the overall construction personnel.

[0049] Step 4: The millimeter-wave radar in the mother module collects the motion status information of target vehicles within 200m upstream of the lane occupied by the construction area, and analyzes the speed, distance, lane and other information of the target vehicles to determine whether there is a risk of the vehicle entering the lane.

[0050] Step 5: When the risk of the target vehicle breaking in is detected, the embedded industrial control computer in the mother module sends a command to the first high-pitched directional horn and the first flashing warning light through the CAN bus server, driving the first high-pitched directional horn and the first flashing warning light to send a warning message to the driver;

[0051] Step 6: After the main module sends a warning message to the driver of the target vehicle, if the driver of the target vehicle immediately leaves the construction lane, the main module will stop issuing warnings.

[0052] Step 7: If the target vehicle continues to travel on the construction lane after the parent module issues a warning, the parent module continues to issue warnings. At the same time, the embedded industrial control computer in the parent module sends a warning command to the intelligent monitoring and warning mobile robot in the sub-module through the CAN bus server. The intelligent monitoring and warning mobile robot drives the second high-pitched directional horn and the second flashing warning light installed on it to send a warning signal to the construction personnel.

[0053] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0054] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A warning method for an intelligent parent-child early warning system for the safety of highway construction workers, characterized in that, It includes a main module for detecting the movement status of a target vehicle and issuing corresponding warning information to the driver of the target vehicle based on the movement status, and a sub-module for adjusting its own position relative to the construction workers based on real-time monitoring of their positions and issuing corresponding warning information to the construction workers based on the detection results received from the main module; the warning method is as follows: Step 1: Place the mother module at the starting point of the construction area; Step 2: Install the intelligent monitoring and early warning mobile robot from the sub-module on the highway guardrail and equip each construction worker with a locator; Step 3: When the intelligent parent-child early warning system starts working, since the construction workers are on the move, the locator sends the real-time distance and location information of the construction workers to the intelligent monitoring and early warning mobile robot. The data processing center of the intelligent monitoring and early warning mobile robot uses algorithms to analyze the distribution of the construction workers and moves to the optimal position on the guardrail in real time. Step 4: The main module collects the motion status information of target vehicles within a certain distance upstream of the lane occupied by the construction area, and analyzes the speed, distance and lane information of the target vehicles to determine whether there is a risk of the vehicles entering the lane. Step 5: When a risk of intrusion is detected in the target vehicle, the main module sends a warning message to the driver of the target vehicle. Step 6: After the main module sends a warning message to the driver of the target vehicle, if the driver of the target vehicle immediately leaves the construction lane, the main module will stop issuing warnings. Step 7: If the target vehicle continues to drive in the construction lane after the parent module issues a warning, the parent module continues to issue warnings. At the same time, the parent module sends a warning instruction to the sub-module, and the sub-module begins to send warning signals to the construction personnel, prompting them to evacuate the construction area in time.

2. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, The mother module includes an embedded industrial control computer, which is connected via a CAN bus server to a millimeter-wave radar for detecting the motion status of the target vehicle, a first high-pitched directional horn and a first strobe warning light to alert the driver of the target vehicle, a first power supply for powering the mother module, and a first wireless module for communicating with the sub-modules.

3. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, The submodule includes a second power supply for powering the system, a locator for providing real-time location information of construction personnel, the second power supply being connected to an intelligent monitoring and early warning mobile robot that moves freely on the highway guardrail and adjusts its position according to the information received from the locator, a second wireless module for communicating with the main module, a second high-volume directional speaker to prompt construction personnel to evacuate, and a second flashing warning light.

4. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 3, characterized in that, The intelligent monitoring and early warning mobile robot includes a connecting device with a highway guardrail as a guide rail, and a control module that adjusts its position based on information received from the locator to achieve automatic forward, reverse, and stop movement.

5. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, In step 3, the algorithm steps of the intelligent monitoring and early warning mobile robot data processing center are as follows: Step 3.1: The intelligent monitoring and early warning mobile robot collects n distance data points from the construction workers' locators; Step 3.2: Calculate the average value of the above n distance data. d By calculating the standard deviation σ, the overall characteristics of the above distance data are obtained; Step 3.3: Determine an overall range that includes all the distance data mentioned above, selecting a range that is the average distance plus or minus twice the standard deviation. d-2 σ, d+2 σ]; Step 3.4, the above distance range [ d-2 σ, d+2 The center position of σ] is the initial guess of the optimal distance between the intelligent monitoring and early warning mobile robot and the overall distance data, and then the optimal early warning position of the intelligent monitoring and early warning mobile robot is calculated. Step 3.5: The intelligent monitoring and early warning mobile robot moves back and forth on the highway guardrail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusting the position of the intelligent monitoring and early warning mobile robot in real time based on this distance. Step 3.6: When the position of the construction personnel changes, the intelligent monitoring and early warning mobile robot repeats steps 3.1-3.5, dynamically adjusting its position in real time to ensure that the position of the intelligent monitoring and early warning mobile robot on the highway guardrail produces the best early warning effect for the overall construction personnel.

6. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, In step 4, the mother module uses millimeter-wave radar to collect information on target vehicles within 200m upstream of the lane occupied by the construction area.

7. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, In step 5, when a risk of intrusion is detected in the target vehicle, the embedded industrial control computer in the mother module sends instructions to the first high-pitched directional horn and the first strobe warning light through the CAN bus server, driving the first high-pitched directional horn and the first strobe warning light to send warning information to the driver.

8. The early warning method of the intelligent parent-child early warning system for highway construction worker safety according to claim 1, characterized in that, In step 7, the embedded industrial control computer in the mother module sends a warning command to the intelligent monitoring and early warning mobile robot in the sub-module via the CAN bus server. The intelligent monitoring and early warning mobile robot drives the second high-frequency directional speaker and the second flashing warning light installed on it to send a warning signal to the construction personnel.

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