CN114973713A - Anti-misrun intelligent early warning system and method for highway reconstruction and extension project - Google Patents
Anti-misrun intelligent early warning system and method for highway reconstruction and extension project Download PDFInfo
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Abstract
The invention provides an anti-false-break intelligent early warning system for highway reconstruction and extension projects, wherein a sensor is arranged on a reconstruction and extension highway, and monitors and identifies the speed and the type of vehicles which possibly break into a construction operation control area, the traffic flow and the lane occupancy on a road through a built-in laser radar and a multi-target millimeter wave radar; three levels of early warning threshold values are set in the sensor, and are in linkage control with an audible and visual alarm, a warning shoulder lamp and an early warning driving strobe label which are used for early warning in a wireless transmission mode, and a grading warning signal is sent out; the system background is in communication connection with the sensor and used for recording detection related data. The invention also provides an anti-misrun intelligent early warning method for the road reconstruction and extension project. Compared with other protective facilities, the accident rate of the vehicle entering the construction operation control area is averagely reduced by 60%, the alarm accuracy rate of the vehicle entering the construction operation control area to constructors is 98%, and the traffic safety risk and the accident loss of the reconstruction and extension project are obviously reduced.
Description
Technical Field
The invention relates to the technical field of traffic facilities, in particular to an anti-misrun intelligent early warning system and method for highway reconstruction and extension projects.
Background
By the end of 2020, the total mileage of the expressway in China exceeds 16 kilometers, and the expressway is continuously ranked worldwide first. However, as traffic flow increases year by year, the existing highway network cannot meet the increasing traffic demand, and more reconstruction projects are presented. Compared with a new construction, the highway reconstruction and extension project usually adopts a mode of 'vehicle passing while construction', the traffic organization is complex and changeable, the mutual interference between the construction and the operation is serious, particularly, the accident that vehicles pass through the construction operation control area by mistake is prominent, the accident that a certain province of highway reconstruction and extension project collides with a fixed object and breaks through the construction operation control area reaches 1057, serious casualties and property loss are caused, and the safety situation is extremely severe. However, the current accident prevention technology for the passing vehicles to mistakenly enter the working area is not complete, an effective early warning device is lack, and the multi-scene applicability of an active early warning system is insufficient. The concrete expression is as follows:
problem 1: the accident prevention technology is not complete, the existing early warning equipment and the used technology do not have the functions of accurately, remotely and regionally identifying dangerous vehicles and carrying out remote graded warning and driving away, so that the situation that the vehicles break into a construction operation control region when the equipment triggers warning or the vehicles normally pass in an adjacent region but send out warning signals often occurs, and the active early warning effect is poor; the existing alarm equipment does not have a grading alarm function and can not respectively send out alarm signals to related vehicles or people according to the requirements of different alarm scenes.
Problem 2: the lack of an effective early warning device, the conventional temporary traffic safety facilities such as warning, advance warning signs, signs and the like only display fixed contents, the drivers of passing vehicles usually cannot effectively observe in time, and warning signals cannot be sent to the drivers in time when the vehicles do not change lanes in time and possibly break into a construction operation control area; when an accident that a vehicle intrudes into a construction operation control area occurs, the accident vehicle is accurately identified, and a facility shortage that an effective escape early warning signal is sent to an adjacent construction operator is avoided.
Problem 3: the multi-scene applicability of the active early warning system is insufficient, and the active early warning system is characterized in that the existing equipment is single in use scene, only the existing equipment sends out an alarm to a vehicle and personnel at the same time at a fixed point position through a tweeter carried by the existing equipment, the alarm coverage is small, the equipment is single, and the requirements of sending out alarm information to the vehicle and construction workers respectively at a long distance and at multiple point positions cannot be met for complex scenes such as a central division zone conversion port and an upstream transition zone for road reconstruction and extension; the existing equipment does not have a cooperative linkage function, and can not be used for combined networking of a plurality of alarm devices according to the alarm requirement of a specific scene.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an intelligent anti-false-break early warning system and an intelligent anti-false-break early warning method for highway reconstruction and extension projects.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an anti-misrun intelligent early warning system for highway reconstruction and extension projects comprises a sensor, an audible and visual alarm, an alarm shoulder lamp, an early warning and departure strobe label and a system background, wherein the sensor is installed on a reconstruction and extension highway, and the speed and the type of vehicles which possibly break into a construction operation control area, the traffic flow and the lane occupancy rate on the highway are monitored and identified by a built-in laser radar and a multi-target millimeter wave radar; three levels of early warning threshold values are set in the sensor, and are in linkage control with an audible and visual alarm, an alarm shoulder lamp and an early warning driving strobe label for early warning in a wireless transmission mode and send a grading alarm signal; the system background is in communication connection with the sensor and used for recording detection related data.
Further, the multi-target millimeter wave radar obtains a three-level early warning standard based on time and space characteristics by means of early warning distance, speed and a laser radar monitoring threshold value and by means of mapping relations between speed, distance, monitoring width index parameters and warning time.
Further, the early warning drive-off stroboscopic signage comprises a primary early warning drive-off stroboscopic signage and a secondary early warning drive-off stroboscopic signage, the millimeter wave radar is set with a primary early warning distance and speed, and when the millimeter wave radar identifies that the vehicle meets the primary early warning distance and speed, the millimeter wave radar sends the vehicle to the primary early warning drive-off stroboscopic signage; the millimeter wave radar is set with a second-level early warning distance and a second-level early warning speed, and when the millimeter wave radar recognizes that the vehicle meets the second-level early warning distance and the second-level early warning speed, the millimeter wave radar sends the vehicle to the second-level early warning driving-away stroboscopic signboard.
Further, laser radar scanning monitoring length, through setting for scanning monitoring length, when the vehicle appears in laser radar scanning area in mistake rushing through, send tertiary alarm information to audible-visual annunciator, warning shoulder lamp, inform the construction operation personnel to withdraw the scene immediately.
Further, audible and visual alarm sets up near construction operation personnel, and warning shoulder lamp sets up on construction operation personnel shoulder, and the warning is driven away the stroboscopic sign and is set up inboard at roadside and closed lane awl bucket.
Further, the perceptron is provided with a control panel, the control panel is provided with millimeter wave radar detection width, first-level early warning distance and speed of the millimeter wave radar, second-level early warning distance and speed of the millimeter wave radar, scanning and monitoring length of the laser radar, and the control panel is provided with the millimeter wave radar, an alarm shoulder lamp and an audible and visual alarm switch button.
In order to achieve the above object, the present invention further provides an anti-false-break intelligent early warning method for highway reconstruction and extension engineering, which uses the above anti-false-break intelligent early warning system for highway reconstruction and extension engineering, and specifically comprises the following steps:
s1, determining the arrangement position of the sensor according to the arrangement form of the field construction operation control area;
s2, setting the multi-target millimeter wave radar monitoring direction of the sensor as reverse traffic flow to continuously scan and monitor the traffic condition in the warning area;
s3, setting the laser radar monitoring direction of the sensor to be continuous monitoring along the cone barrel direction of the upstream transition region;
s4, setting the multi-target millimeter wave radar monitoring width, the primary early warning driving threshold value, the secondary early warning driving threshold value and the laser radar monitoring length threshold value of the sensor according to the on-site monitoring requirement;
s5, erecting a first-stage early warning and driving strobe label A according to the on-site driving and driving early warning requirement;
s6, laying a secondary early warning and driving away stroboscopic sign B;
s7, arranging an audible and visual alarm near a construction worker, and hanging an alarm shoulder lamp on the shoulder of the construction worker;
s8, when the sensor recognizes that the vehicle is continuously close to the upstream transition area and does not change the lane, and the primary early warning driving-away standard is reached, firstly, a driving-away warning signal is sent to the sign A, and the pattern of the evergreen arrow is changed into the red-fork stroboscopic pattern to prompt the vehicle to change the lane; when the vehicle does not change lanes and the close-distance approaching upstream transition region reaches the secondary early warning and driving standard, the sensor sends a warning signal to the sign B, and the evergreen arrow mode is changed into the red-fork stroboscopic mode to prompt the vehicle to change lanes in time; when the vehicle enters the construction operation control area without changing the road due to some reason, the sensor laser radar immediately identifies and triggers a three-level early warning standard, and the sensor sends signals to an audible and visual alarm and an alarm shoulder lamp so as to prompt operators to evacuate in time; the system background counts data such as vehicle intrusion time, position, speed and equipment running condition, analyzes road segment intrusion traffic accident characteristics, provides basis for field protection and traffic control, and monitors equipment running state.
Further, the laser radar monitoring length threshold in the step S4 is determined according to actual situations in the field, and the length threshold is a distance between the position of the sensor and the end point of the transition region; the monitoring width of the multi-target millimeter wave radar can be used for distinguishing target lanes monitored by the targets; the first-stage early warning driving threshold and the second-stage early warning driving threshold are realized by setting the distance and the speed of the vehicle from the sensor, and when the passing vehicle enters the set monitoring early warning range threshold and the speed of the passing vehicle exceeds the set speed threshold, the sensor can be triggered to drive the strobe sign to alarm to the early warning.
Further, the minimum set value of the secondary early warning driving threshold value is set according to the most unfavorable condition, namely, the driver cannot change the lane after receiving the secondary driving signal, but takes a deceleration measure and stops at the scene before the cone barrel in the transition area, and the calculation method is shown as the following formula:
S 2 setting a numerical minimum suggested value V for the distance in the secondary early warning drive threshold value of the sensor 2 Setting a value, t, for "speed" in a secondary early warning threshold of a sensor 2 And (b) the average deceleration of the vehicle is the time required by the driver to take braking measures after the passing vehicle triggers the secondary alarm of the sensor.
Further, the first-stage warning driving strobe sign a in the step S5 is disposed on the right side of the sensor in the direction opposite to the traffic flow in the form of a bracket, so that the strobe sign of the sign board faces the incoming direction of the vehicle, and the position of the warning driving strobe sign farthest from the sensor can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
in the formula, L 1 For the first-stage early warning, the distance between the strobe label and the sensor is driven, S 1 Setting a value V for the distance in the first-level early warning threshold of the sensor 1 Setting a value, t, for "speed" in a first-level early warning threshold of a sensor 1 The time required for the passing vehicle to trigger the sensor primary alarm until the driver observes the change of the sign mode is provided.
Has the advantages that: compared with other protective facilities, the accident rate of the vehicle entering the construction operation control area is averagely reduced by 60%, the alarm accuracy rate of the vehicle to constructors after entering the construction operation control area reaches 98%, the traffic safety risk and the accident loss of the reconstruction and extension project are obviously reduced, the traffic safety risk pre-control level of the reconstruction and extension project is effectively improved, and the method has great significance for guaranteeing the life and property safety of people.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a functional schematic diagram of an anti-misrun intelligent early warning system for highway reconstruction and extension projects according to an embodiment of the present invention;
fig. 2 is a functional block diagram of a sensor of the anti-misrun intelligent early warning system for highway reconstruction and extension projects according to the embodiment of the present invention;
fig. 3 is an application schematic diagram (normal state and accident state) of the anti-misrun intelligent early warning system for highway reconstruction and extension projects according to the embodiment of the present invention;
fig. 4 is a main flowchart of the anti-misrun intelligent warning method for the highway rebuilding and expansion project according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to FIGS. 1-3: an anti-misrun intelligent early warning system for highway reconstruction and extension projects comprises a sensor, an audible and visual alarm, an alarm shoulder lamp, an early warning and departure strobe label and a system background, wherein the sensor is installed on a reconstruction and extension highway, and the speed and the type of vehicles which possibly break into a construction operation control area, the traffic flow and the lane occupancy rate on the highway are monitored and identified by a built-in laser radar and a multi-target millimeter wave radar; three levels of early warning threshold values are set in the sensor, and are in linkage control with an audible and visual alarm, a warning shoulder lamp and an early warning driving strobe label which are used for early warning in a wireless transmission mode, and a grading alarm signal is sent out; the system background is in communication connection with the sensor and used for recording detection related data.
The perceptron of this embodiment sets laser radar and multi-target millimeter wave radar, can be to the speed that probably breaks into construction operation control area vehicle, traffic flow on motorcycle type and the road, the lane occupancy carries out effective monitoring, discernment, according to the three rank early warning threshold value of settlement, through wireless transmission, realize audible-visual annunciator, warning shoulder lamp and early warning drive away from stroboscopic sign coordinated control and send hierarchical alarm signal, record the detection data of perceptron through the system backstage, thereby the multistage intelligent early warning of false break-through prevention of highway reconstruction and extension engineering has been realized.
It should be noted that the sensor of this embodiment includes a central processing unit, a switch module, a communication module, a multi-target millimeter wave radar, a laser radar, a data storage module, an early warning threshold parameter setting module, and a power module. The distance of the laser radar equipped with the sensor can be effectively detected to be 150m, 360-degree angle adjustment can be realized, the laser radar ray is emitted along the boundary of the transition section of the construction operation control area, and the information of vehicle intrusion into the control area can be obtained; the effective detection distance of the millimeter wave radar can reach 280m, and the millimeter wave radar is aligned to the lane, so that the information such as the speed, the position and the like of the passing vehicle in the lane can be obtained.
It should be noted that, the system background of this embodiment receives the traffic and accident data and the equipment operation data detected by the sensor through the 4G/5G network, so as to automatically analyze the accident characteristics and the road traffic flow characteristics of a certain time period and a certain road segment, and provide a decision basis for later-stage on-site protection and control.
In a specific example, the multi-target millimeter wave radar obtains a three-level early warning standard based on time and space characteristics by early warning distance, speed and a laser radar monitoring threshold value and by using the mapping relation between speed, distance, monitoring width index parameters and warning time.
In a specific example, the early warning drive-off stroboscopic signage comprises a primary early warning drive-off stroboscopic signage and a secondary early warning drive-off stroboscopic signage, the millimeter wave radar is set with a primary early warning distance and speed, and when the millimeter wave radar identifies that a vehicle meets the primary early warning distance and speed, the millimeter wave radar sends the vehicle to the primary early warning drive-off stroboscopic signage; the millimeter wave radar is set with a second-level early warning distance and speed, and when the millimeter wave radar identifies that the vehicle meets the second-level early warning distance and speed, the millimeter wave radar sends the vehicle to the second-level early warning driving away stroboscopic sign.
In a specific example, the laser radar scans the monitoring length, and when a vehicle rushes by mistake appears in a laser radar scanning area, the laser radar scans the monitoring length, and sends three-level alarm information to an audible and visual alarm and an alarm shoulder lamp to inform construction workers of immediately withdrawing from the site.
In a specific example, the audible and visual alarm is arranged near a construction operator, the alarm shoulder lamp is arranged on the shoulder of the construction operator, and the early warning and driving away stroboscopic sign is arranged on the road side and the inner side of the closed lane cone barrel.
The audible and visual alarm and the alarm shoulder lamp of the embodiment receive the three-level alarm evacuation signal sent by the sensor;
the audible and visual alarm emits red and blue flashing lights and high-pitch alarm sounds to prompt operators to evacuate timely, the audible and visual alarm continuously emits alarm information for 1min, and the construction operators can stop alarming at any time in a manual mode;
the alarm shoulder lamp prompts operators to evacuate timely by means of vibration, alarm sound and red and blue flashing, the alarm shoulder lamp continuously sends out alarm information for 1min, and the construction operators can stop alarming at any time in a manual mode.
The warning driving-away stroboscopic sign is used for receiving a primary warning driving-away signal and a secondary warning driving-away signal sent by a sensor, and the sign is changed from a normally-green arrow mode to a red-fork stroboscopic mode so as to prompt a vehicle to change lanes timely. When the vehicle is driven away, the sign changes from the red-fork strobe mode to the evergreen arrow mode. Both modes have greater visibility at night and during the day.
In a specific example, the perceptron is provided with a control panel, the control panel is provided with a millimeter wave radar detection width, a millimeter wave radar primary early warning distance and speed, a millimeter wave radar secondary early warning distance and speed, a laser radar scanning monitoring length, and is provided with a millimeter wave radar, an alarm shoulder lamp and an audible and visual alarm switch button.
In summary, the intelligent early warning system for preventing false break of the embodiment has three early warning levels, namely a first-level vehicle driving away early warning, a second-level vehicle driving away early warning and a third-level construction worker evacuation early warning. The grading early warning function is mainly realized by designing and researching a sensor, the effective detection distance of the multi-target millimeter wave radar integrated with the sensor can reach 280m, the effective detection distance of the laser radar can reach 150m, and by setting data parameters such as the monitoring width, the monitoring distance of the multi-target millimeter wave radar, the monitoring distance of the laser radar and the like, the accurate recognition of a remote vehicle and the recognition of a vehicle intrusion operation control area can be realized and the grading early warning function is used as a calculation basis for determining an early warning grading standard of a grading early warning model of the sensor. The early warning driving strobe sign is arranged in advance through research and development, alarm signals from the sensor are received, and the vehicle can be remotely prompted to take lane changing measures in time through changing the strobe mode.
The warning of this embodiment research and development is driven away stroboscopic sign and can be set up in the roadside and seals lane awl bucket inboard etc. department, drives away alarm signal through receiving one-level, the second grade that comes from the perceptron and send, and the sign is become red fork stroboscopic mode by evergreen arrow point mode, can in time attract driver's attention to the timely lane change of suggestion vehicle. After a vehicle breaks into a construction operation control area, the sensor laser radar can accurately identify and trigger three-level early warning, and sends three-level warning signals to a construction warning shoulder lamp and an audible and visual alarm in a wireless communication mode to prompt operators to escape timely.
The sensor of this embodiment is equipped with control panel, can realize that multi-target millimeter wave radar, laser radar, early warning drive from closing and opening of stroboscopic sign alarming function, warning shoulder lamp alarming function, audible-visual annunciator alarming function, utilizes loRa communication protocol to carry out linkage in coordination and freely network deployment to the alarm device of network deployment, and the furthest distance of coverage reaches 10 km. According to the multi-scene alarm requirement, the warning device can be turned off and on, and can be adjusted to be distributed in number according to the requirement, so that the multi-point, remote and multi-level alarm function is realized.
Example 2
To achieve the above object, see fig. 4: the embodiment also provides an anti-false-break intelligent early warning method for the highway reconstruction and extension project, which uses the anti-false-break intelligent early warning system for the highway reconstruction and extension project, and specifically comprises the following steps:
s1, determining the arrangement position of the sensor according to the arrangement form of the field construction operation control area;
in the embodiment, the sensors are arranged at the intersections of the conical barrels and the corrugated beam guardrails in the upstream transition area.
S2, setting the multi-target millimeter wave radar monitoring direction of the sensor as reverse traffic flow to continuously scan and monitor the traffic condition in the warning area;
s3, setting the laser radar monitoring direction of the sensor to be continuous monitoring along the cone barrel direction of the upstream transition region;
s4, setting key parameters such as multi-target millimeter wave radar monitoring width, primary early warning driving threshold, secondary early warning driving threshold, laser radar monitoring length threshold and the like of the sensor according to the on-site monitoring requirement; the laser radar monitoring length threshold in the step of S4 is determined according to actual conditions on site, and the length threshold is the distance between the position of the sensor and the end point of the transition area; the monitoring width of the multi-target millimeter wave radar can be used for distinguishing target lanes monitored by the targets; the first-stage early warning driving threshold value and the second-stage early warning driving threshold value are realized by setting the distance and the speed of a vehicle from a sensor, when a passing vehicle enters a set monitoring early warning range threshold value and the speed of the passing vehicle exceeds a set speed threshold value, the sensor can be triggered to give an early warning driving stroboscopic sign alarm function, the minimum set value of the second-stage early warning driving threshold value is set according to the worst condition, namely, a driver cannot change a lane after receiving a second-stage driving signal, but takes a deceleration measure and stops in the scene in front of a transition area cone barrel, and the calculation method is shown as the following formula:
S 2 setting a numerical minimum suggested value V for the distance in the secondary early warning drive threshold value of the sensor 2 Setting a value, t, for "speed" in a secondary early warning threshold of a sensor 2 And (b) the average deceleration of the vehicle is the time required by the driver to take braking measures after the passing vehicle triggers the secondary alarm of the sensor.
It should be noted that, in the field practical application, the primary early warning driving-away threshold value and the secondary early warning driving-away threshold value can be comprehensively determined according to the road speed limit, the traffic composition and the like. Meanwhile, in order to enable the vehicle to take measures such as speed reduction and lane change within enough time after receiving the secondary alarm signal and prevent the vehicle from rushing into the construction operation control area, the embodiment provides a minimum value-taking suggestion of a secondary early warning "distance" threshold value, so that the normal use of the road is not influenced to the maximum extent by excessive occupation on the road on the premise of ensuring the safety of road constructors.
S5, erecting a first-stage early warning and driving strobe label A according to the on-site driving and driving early warning requirement; the first-stage early warning driving strobe sign A in the step S5 is arranged on the right side of the sensor in the direction opposite to the traffic flow in a support mode, so that a strobe sign of the sign board faces the driving direction of the vehicle, and the position, farthest from the sensor, of the early warning driving strobe sign A can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
in the formula, L 1 For the first-stage early warning, the distance between the strobe label and the sensor is driven, S 1 Setting a value V for the distance in the first-level early warning threshold of the sensor 1 Setting a value, t, for "speed" in a first-level early warning threshold of a sensor 1 The time required for the passing vehicle to trigger the sensor primary alarm and then for the driver to observe the change of the sign mode.
In practical application, in order to enhance the warning and driving-away effect on passing vehicles, the first-level warning and driving-away stroboscopic signboard can be sequentially provided with a plurality of blocks along the traffic flow direction as required. The distributed primary early warning and driving-away stroboscopic signboard can simultaneously receive early warning and driving-away signals from the sensor and has synchronous stroboscopic frequency.
S6, laying a secondary early warning and driving away stroboscopic sign B;
it should be noted that the secondary warning and driving stroboscopic sign B is arranged in the middle of the closed lane inside the upstream transition area, so that the stroboscopic sign of the sign board faces the passing vehicle. The second-level early warning driving-away stroboscopic signboard can also be sequentially provided with a plurality of blocks along the direction of the transition area as required, simultaneously receives the early warning driving-away signal from the perceptron, and has synchronous stroboscopic frequency.
S7, arranging an audible and visual alarm near a constructor, and hanging an alarm shoulder lamp on the shoulder of the constructor;
s8, when the sensor recognizes that the vehicle is continuously close to the upstream transition area and does not change the lane, and the primary early warning driving-away standard is reached, firstly, a driving-away warning signal is sent to the sign A, and the pattern of the evergreen arrow is changed into the red-fork stroboscopic pattern to prompt the vehicle to change the lane; when the vehicle does not change lanes and the close-distance approaching upstream transition region reaches the secondary early warning and driving standard, the sensor sends a warning signal to the sign B, and the evergreen arrow mode is changed into the red-fork stroboscopic mode to prompt the vehicle to change lanes in time; when the vehicle enters the construction operation control area without changing the road due to some reason, the sensor laser radar immediately identifies and triggers a three-level early warning standard, and the sensor sends signals to an audible and visual alarm and an alarm shoulder lamp so as to prompt operators to evacuate in time; the system background counts data such as vehicle intrusion time, position, speed and equipment running condition, analyzes road segment intrusion traffic accident characteristics, provides basis for field protection and traffic control, and monitors equipment running state.
By applying the early warning method, compared with other protective facilities, the accident rate of the vehicle intruding into the construction operation control area is averagely reduced by 60%, the alarm accuracy rate of the vehicle after intruding into the construction operation control area to constructors reaches 98%, the traffic safety risk and the accident loss of the reconstruction and extension project are obviously reduced, the traffic safety risk pre-control level of the reconstruction and extension project is effectively improved, and the early warning method has great significance for guaranteeing the life and property safety of people.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An intelligent early warning system for preventing false intrusion for highway reconstruction and extension projects is characterized by comprising a sensor, an audible and visual alarm, an alarm shoulder lamp, an early warning and departure strobe label and a system background, wherein the sensor is installed on a reconstruction and extension highway, and the speed and the type of vehicles which possibly intrude into a construction operation control area, the traffic flow and the lane occupancy on the highway are monitored and identified by a built-in laser radar and a multi-target millimeter wave radar; three levels of early warning threshold values are set in the sensor, and are in linkage control with an audible and visual alarm, an alarm shoulder lamp and an early warning driving strobe label for early warning in a wireless transmission mode and send a grading alarm signal; the system background is in communication connection with the sensor and used for recording detection related data.
2. The intelligent early warning system for preventing false breakthrough for highway reconstruction and extension projects according to claim 1, wherein the multi-target millimeter wave radar obtains a three-level early warning standard based on time and space characteristics by early warning distance, speed and laser radar monitoring threshold value and by using mapping relation between speed, distance, monitoring width index parameters and warning time.
3. The intelligent anti-misrun early warning system for the road reconstruction and extension project according to claim 1, wherein the early warning drive-away strobe signs comprise a primary early warning drive-away strobe sign and a secondary early warning drive-away strobe sign, the millimeter wave radar is set with a primary early warning distance and speed, and when the millimeter wave radar identifies that the vehicles meet the primary early warning distance and speed at the same time, the millimeter wave radar sends the signals to the primary early warning drive-away strobe sign; the millimeter wave radar is set with a second-level early warning distance and a second-level early warning speed, and when the millimeter wave radar recognizes that the vehicle meets the second-level early warning distance and the second-level early warning speed, the millimeter wave radar sends the vehicle to the second-level early warning driving-away stroboscopic signboard.
4. The intelligent anti-misrun early warning system for the road reconstruction and extension project according to claim 1, wherein the laser radar scans the monitoring length, and when a vehicle misrun appears in a laser radar scanning area, the set scanning monitoring length is set, so that three-level warning information is sent to an audible and visual alarm and a warning shoulder lamp to inform construction workers of immediately withdrawing from a site.
5. The intelligent early warning system for preventing false running for road reconstruction and extension projects as claimed in claim 1, wherein the audible and visual alarm is arranged near the construction worker, the alarm shoulder lamp is arranged on the shoulder of the construction worker, and the early warning and driving away stroboscopic sign is arranged at the road side and inside the closed lane cone.
6. The intelligent early warning system for preventing misrun for highway reconstruction and extension projects according to claim 1, wherein the sensor is provided with a control panel, the control panel is provided with a millimeter wave radar detection width, a millimeter wave radar primary early warning distance and speed, a millimeter wave radar secondary early warning distance and speed, a laser radar scanning monitoring length, a millimeter wave radar, a warning shoulder lamp and an audible and visual alarm switch button.
7. An anti-false-break intelligent early warning method for highway reconstruction and extension projects, which is characterized in that the anti-false-break intelligent early warning system for highway reconstruction and extension projects as claimed in any one of claims 1 to 6 is used, and the method specifically comprises the following steps:
s1, determining the arrangement position of the sensor according to the arrangement form of the field construction operation control area;
s2, setting the multi-target millimeter wave radar monitoring direction of the sensor as reverse traffic flow to continuously scan and monitor the traffic condition in the warning area;
s3, setting the laser radar monitoring direction of the sensor to be continuous monitoring along the cone barrel direction of the upstream transition region;
s4, setting the multi-target millimeter wave radar monitoring width, the primary early warning driving threshold value, the secondary early warning driving threshold value and the laser radar monitoring length threshold value of the sensor according to the on-site monitoring requirement;
s5, erecting a first-stage early warning and driving strobe label A according to the on-site driving and driving early warning requirement;
s6, laying a secondary early warning and driving away stroboscopic sign B;
s7, arranging an audible and visual alarm near a constructor, and hanging an alarm shoulder lamp on the shoulder of the constructor;
s8, when the sensor recognizes that the vehicle is continuously close to the upstream transition area and does not change the lane, and the primary early warning driving-away standard is reached, firstly, a driving-away warning signal is sent to the sign A, and the pattern of the evergreen arrow is changed into the red-fork stroboscopic pattern to prompt the vehicle to change the lane; when the vehicle does not change lanes and the close-distance approaching upstream transition region reaches the secondary early warning and driving standard, the sensor sends a warning signal to the sign B, and the evergreen arrow mode is changed into the red-fork stroboscopic mode to prompt the vehicle to change lanes in time; when the vehicle enters the construction operation control area without changing the road due to some reason, the sensor laser radar immediately identifies and triggers a three-level early warning standard, and the sensor sends signals to an audible and visual alarm and an alarm shoulder lamp so as to prompt operators to evacuate in time; the system background counts data such as vehicle intrusion time, position, speed and equipment running condition, analyzes road segment intrusion traffic accident characteristics, provides basis for field protection and traffic control, and monitors equipment running state.
8. The intelligent early warning method for preventing false violation for road reconstruction and expansion project of claim 7, wherein the lidar monitoring length threshold in the step S4 is determined according to actual conditions on site, and the length threshold is a distance between the position of the sensor and the end point of the transition zone; the monitoring width of the multi-target millimeter wave radar can be used for distinguishing target lanes monitored by the targets; the first-stage early warning driving threshold and the second-stage early warning driving threshold are realized by setting the distance and the speed of the vehicle from the sensor, and when the passing vehicle enters the set monitoring early warning range threshold and the speed of the passing vehicle exceeds the set speed threshold, the sensor can be triggered to drive the strobe sign to alarm to the early warning.
9. The anti-misrun intelligent early warning method for road reconstruction and extension projects according to claim 8, wherein the minimum set value of the secondary early warning drive-off threshold value is set according to the worst condition, namely, a driver cannot change the road after receiving the secondary drive-off signal, but takes a deceleration measure and stops at the scene in front of the cone barrel in the transition area, and the calculation method is as follows:
S 2 setting a numerical minimum suggested value V for the distance in the secondary early warning drive threshold value of the sensor 2 Setting a value, t, for "speed" in a secondary early warning threshold of a sensor 2 For triggering passing vehiclesThe time required by the driver to take braking measures after the secondary alarm of the sensor is a vehicle average deceleration.
10. The anti-misrun intelligent early warning method for road reconstruction and extension projects according to claim 7, wherein the primary early warning driving away stroboscopic sign A in step S5 is arranged on the right side of the sensor on the road opposite to the traffic flow direction in a bracket manner, so that the stroboscopic sign of the sign board faces the driving direction of the vehicle, and the position of the early warning driving away stroboscopic sign away from the sensor, which is farthest from the sensor, can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
in the formula, L 1 For the first-stage early warning, the distance between the strobe label and the sensor is driven, S 1 Setting a value V for the distance in the first-level early warning threshold of the sensor 1 Setting a value, t, for "speed" in a first-level early warning threshold of a sensor 1 The time required for the passing vehicle to trigger the sensor primary alarm until the driver observes the change of the sign mode is provided.
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