Intelligent child-mother early warning system and early warning method for safety of highway constructors

Abstract

The invention belongs to the technical field of highway construction area traffic accident prevention, and particularly relates to an intelligent child-mother early warning system and early warning method for highway construction personnel safety. According to the intelligent child-mother early warning system, an upstream vehicle driver in a construction area can be early warned in advance, meanwhile, an automatic intelligent monitoring and early warning mobile robot is additionally arranged in the child module to early warn constructors in real time, and it is ensured that the optimal early warning effect is achieved according to the distribution situation of the constructors; the defect that a driver neglects the early warning information so that the early warning system can not play a role is overcome, the effectiveness of the early warning system is improved, and therefore the life safety of constructors is guaranteed. The devices included in the early warning system can be reused, the intelligent monitoring and early warning mobile robot is convenient to operate, does not need to be manually moved and can automatically follow the constructors to integrally move back and forth, the early warning range always follows the position change of the constructors, and the early warning reliability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of traffic accident prevention in highway construction areas, and in particular relates to an intelligent parent-child early warning system and an early warning method for the safety of highway construction workers. Background Art

[0002] As the highway ages, its performance will gradually decline. If it is not maintained in time, it will be severely damaged, which is very likely to cause traffic accidents. Highway maintenance requires construction work to be carried out without interrupting traffic, but the setting of construction areas reduces the number of passable lanes and lane widths, resulting in a sudden change in the driving environment, which requires drivers to change lanes in advance. When the driver's perception decreases due to fatigue, distraction, or the complex environment around the construction area, and is unable to detect and identify the safety facilities in the construction area in time and take corresponding measures in time, it will cause the driver to drive the vehicle into the construction area by mistake, causing a collision accident, which seriously threatens the life safety of construction workers.

[0003] In the prior art, safety facilities are generally used to fence off the construction area to form a temporary isolation area. At the same time, the patterns, lights, and text messages of safety facilities such as construction signs and reflective cones are used to remind passing vehicles to slow down and pay attention to the reduction of lanes. The disadvantage is that it does not have the function of intrusion detection and active warning to construction personnel, and the warning effect is limited; or, a passive safety warning system for the construction area is used. The system detects whether a vehicle has intruded into the construction area through a vehicle knockdown detection device, and wireless communication transmits the information to a control device, and then the control device controls the information board and the alarm device to work. If there is a vehicle knockdown detection device, if continuous detection is required, the detection device must be manually restored. The disadvantage is that the operation is inconvenient, the cost is high, and there is a safety risk; or, an active safety warning system for the construction area is used. The system determines whether the vehicle has a risk of intruding into the construction area by detecting whether the upstream vehicle of the construction area can safely change lanes and leave the lane of the construction area. When there is a risk of intrusion, the driver is warned. The disadvantage is that when the construction section is long and the range is wide, it is difficult to warn the construction personnel. When the warning information is not taken seriously by the driver, there is still a risk of intrusion. In summary, the existing early warning systems in construction areas do not take the safety protection of construction workers into consideration, and do not promptly convert danger information into alarm information and transmit it to construction workers so that they can take preventive measures in advance, thus providing multiple guarantees for construction safety.

[0004] In order to solve the above problems, the present invention proposes an intelligent mother-and-child warning system for highway construction areas. While warning drivers upstream of the construction area road, on-site monitoring and warning equipment is added to the construction area to sense the risk of accidental intrusion in advance, warn construction personnel, and ensure their work safety.

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

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide an intelligent parent-child warning system and warning method for the safety of highway construction workers. By warning drivers upstream of the construction area, on-site monitoring and warning equipment is added to the construction area to perceive the risk of accidental intrusion in advance, warn the construction workers, and ensure their work safety.

[0007] To achieve the above object, the present invention provides the following technical solutions:

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

[0009] Specifically, the mother module includes an embedded industrial computer, which is connected to a millimeter-wave radar for detecting the movement state of a target vehicle, a first tweeter directional speaker and a first flashing warning light for alerting 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-module through a CAN bus server; the first power supply is respectively connected to the embedded industrial computer, the millimeter-wave radar, the first tweeter directional speaker, the first flashing warning light, and the first wireless module.

[0010] Specifically, the submodule includes a second power supply for power supply, a locator for providing real-time location information of construction workers, the second power supply is connected to an intelligent monitoring and early warning mobile robot that can move freely on the highway guardrail and adjust its position according to the information received from the locator, a second wireless module for communicating with the mother module, a second high-pitched directional speaker to prompt construction workers to evacuate, and a second flashing warning light.

[0011] 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 own position according to the information received from the locator to realize automatic forward, reverse and stop movement; the control module is located above the connecting device, and a second high-pitched directional speaker and a second flashing warning light are arranged 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 of the intelligent parent-child early warning system for the safety of highway construction workers as described above, and the specific method 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 warning system starts working, since the construction workers are active, the locator sends the real-time distance position information between the construction workers and the intelligent monitoring and early warning mobile robot to the intelligent monitoring and early warning mobile robot in real time. The data processing center of the intelligent monitoring and early warning mobile robot uses an algorithm 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 data processing center of the intelligent monitoring and early warning mobile robot are as follows:

[0016] Step 3.1, the intelligent monitoring and early warning mobile robot collects n distance data from the construction personnel locator;

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

[0018] Step 3.3, determine an overall range that includes all the above distance data, and select the range of the distance mean plus or minus two standard deviations [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 distance data as a whole, 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 rail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusts the position of the intelligent monitoring and early warning mobile robot in real time according to the 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 to 3.5, and dynamically adjusts the 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 the target vehicle within 200m upstream of the occupied lane in the construction area, and analyzes the speed, distance, lane and other information of the target vehicle to determine whether the vehicle has an intrusion risk;

[0023] Step 5: When the target vehicle is identified as having an intrusion risk, the embedded industrial computer in the mother module sends a command to the first high-pitched directional speaker and the first flashing warning light through the CAN bus server, driving the first high-pitched directional speaker and the first flashing warning light to send a warning message to the driver;

[0024] Step 6: After the mother 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 mother module stops issuing warnings;

[0025] Step 7: If the target vehicle is still driving in the construction lane after the mother module issues a warning, the mother module continues to issue a warning. At the same time, the embedded industrial computer in the mother module sends a warning instruction to the sub-module intelligent monitoring and early warning mobile robot through the CAN bus server. The intelligent monitoring and early warning mobile robot drives the second high-pitched directional speaker and the second flashing warning light installed thereon 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] The intelligent parent-child warning system of the present invention can not only give early warning to the drivers of vehicles upstream of the construction area, but also add an automatic intelligent monitoring and early warning mobile robot in the submodule to give real-time early warning to the construction personnel, and ensure the best early warning effect according to the distribution of the construction personnel, thereby making up for the defect that the early warning system fails to function due to the driver's negligence of early warning information, improving the effectiveness of the early warning system, and thus protecting the lives of the construction personnel; moreover, the devices included in the early warning system of the present invention can be reused, the intelligent monitoring and early warning mobile robot is easy to operate, does not need to be moved manually, can automatically follow the construction personnel in the overall reciprocating movement, the early warning range always follows the changes in the position of the construction personnel, and the early warning reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 The figure is a flow chart of the early warning method of the intelligent parent-child early warning system of the present invention. DETAILED DESCRIPTION

[0031] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples consistent with some aspects of the present invention as detailed in the appended claims.

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] Example 1

[0034] The present embodiment provides an intelligent parent-child warning system for the safety of highway construction workers, including a mother module for detecting the motion state of a target vehicle and issuing corresponding warning information to the driver of the target vehicle based on the motion state of the target vehicle, 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 warning information to the construction workers based on the results of the detection received from the mother module.

[0035] Specifically, the mother module includes an embedded industrial computer, which is connected to a millimeter-wave radar for detecting the movement state of a target vehicle, a first high-pitched directional speaker and a first flashing warning light for alerting 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-module through a CAN bus server.

[0036] Specifically, the submodule includes a second power supply for power supply, a locator for providing real-time location information of construction workers, the second power supply is connected to an intelligent monitoring and early warning mobile robot that can move freely on the highway guardrail and adjust its position according to the information received from the locator, a second wireless module for communicating with the mother module, a second high-pitched directional speaker to prompt construction workers to evacuate, and a second flashing warning light.

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

[0038] See also Figure 1 As shown, this embodiment also provides a warning method of the intelligent parent-child warning system for the safety of highway construction workers as described above, and 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 active, the locator sends the real-time distance and position information between the construction workers and the intelligent monitoring and early warning mobile robot to the intelligent monitoring and early warning mobile robot in real time. The data processing center of the intelligent monitoring and early warning mobile robot uses an algorithm 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 from the construction personnel locator;

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

[0045] Step 3.3, determine an overall range that includes all the above distance data, and select the range of the distance mean plus or minus two standard deviations [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 distance data as a whole, 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 rail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusts the position of the intelligent monitoring and early warning mobile robot in real time according to the 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 to 3.5, and dynamically adjusts the 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 the target vehicle within 200m upstream of the occupied lane in the construction area, and analyzes the speed, distance, lane and other information of the target vehicle to determine whether the vehicle has an intrusion risk;

[0050] Step 5: When the target vehicle is identified as having an intrusion risk, the embedded industrial computer in the mother module sends a command to the first high-pitched directional speaker and the first flashing warning light through the CAN bus server, driving the first high-pitched directional speaker and the first flashing warning light to send a warning message to the driver;

[0051] Step 6: After the mother 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 mother module stops issuing warnings;

[0052] Step 7: If the target vehicle is still driving in the construction lane after the mother module issues a warning, the mother module continues to issue a warning. At the same time, the embedded industrial computer in the mother module sends a warning instruction to the sub-module intelligent monitoring and early warning mobile robot through the CAN bus server. The intelligent monitoring and early warning mobile robot drives the second high-pitched directional speaker and the second flashing warning light installed thereon to send a warning signal to the construction personnel.

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

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

Claims

1. An intelligent parent-child warning system for the safety of highway construction workers, characterized in that: It includes a mother module for detecting the movement state of the target vehicle and sending corresponding warning information to the driver of the target vehicle according to the movement state of the target vehicle, and a sub-module for adjusting its own distance from the construction personnel according to the real-time monitoring of the construction personnel's position and sending corresponding warning information to the construction personnel according to the detection results received from the mother module.

2. According to claim 1, the intelligent parent-child early warning system is characterized in that: The mother module includes an embedded industrial computer, which is connected to a millimeter-wave radar for detecting the motion state of a target vehicle, a first high-pitched directional speaker and a first flashing warning light for alerting 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-module through a CAN bus server.

3. According to claim 1, the intelligent parent-child early warning system is characterized in that: The submodule includes a second power supply for power supply, a locator for providing real-time location information of construction personnel, the second power supply is connected to an intelligent monitoring and early warning mobile robot that can move freely on the highway guardrail and adjust its position according to the information received from the locator, a second wireless module for communicating with the mother module, a second high-pitched directional speaker and a second flashing warning light to prompt construction personnel to evacuate.

4. The intelligent parent-child early warning system according to claim 3 is characterized in that: The intelligent monitoring and early warning mobile robot includes a connection device using a highway guardrail as a guide rail, and a control module that adjusts its own position according to information received from a locator to realize automatic forward movement, reverse movement, and stop movement.

5. The early warning method of the intelligent parent-child early warning system for the safety of highway construction workers based on any one of claims 1 to 4 is characterized in that: The specific 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 in the submodule 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 active, the locator sends the real-time distance position 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 an algorithm to analyze the distribution of the construction workers and moves to the optimal position on the guardrail in real time. Step 4: The mother module collects the motion status information of the target vehicle within a certain distance upstream of the occupied lane in the construction area, and analyzes the speed, distance, and lane information of the target vehicle to determine whether the vehicle has an intrusion risk; Step 5: When the target vehicle is identified as having a risk of intrusion, the mother module sends a warning message to the driver of the target vehicle; Step 6: After the mother 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 mother module stops issuing warnings; Step 7: If the target vehicle is still driving in the construction lane after the mother module issues an early warning, the mother module continues to issue an early warning. At the same time, the mother module sends an early warning instruction to the child module, and the child module starts to send an early warning signal to the construction personnel, prompting the construction personnel to evacuate the construction area in time.

6. The early warning method of the intelligent parent-child early warning system for the safety of highway construction workers according to claim 5 is 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 from the construction personnel locator; Step 3.2, calculate the average value d and standard deviation σ of the n distance data to obtain the overall characteristics of the distance data; Step 3.3, determine an overall range that includes all the above distance data, and select the range of the distance mean plus or minus two standard deviations [d-2σ, d+2σ]; 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 distance data as a whole, 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 high-speed guardrail to find the optimal early warning position, while recording its distance from the overall distance data, and dynamically adjusts the position of the intelligent monitoring and early warning mobile robot in real time according to the distance; Step 3.6: When the position of the construction personnel changes, the intelligent monitoring and early warning mobile robot repeats steps 3.1 to 3.5, and dynamically adjusts the 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.

7. The early warning method of the intelligent parent-child early warning system for the safety of highway construction workers according to claim 5 is characterized in that: In step 4, the mother module uses millimeter wave radar to collect target vehicle information within 200m upstream of the occupied lane in the construction area.

8. The early warning method of the intelligent parent-child early warning system for the safety of highway construction workers according to claim 5 is characterized in that: In step 5, when the target vehicle is identified as having an intrusion risk, the embedded industrial computer in the mother module sends instructions to the first tweeter directional speaker and the first flashing warning light through the CAN bus server, driving the first tweeter directional speaker and the first flashing warning light to send warning information to the driver.

9. The early warning method of the intelligent parent-child early warning system for the safety of highway construction workers according to claim 5, characterized in that: In step 7, the embedded industrial computer in the mother module sends a warning instruction to the sub-module intelligent monitoring and early warning mobile robot through the CAN bus server. The intelligent monitoring and early warning mobile robot drives the second high-pitched directional speaker and the second flashing warning light installed thereon to send a warning signal to the construction personnel.

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