CN114973713B - Anti-false-running intelligent early warning system and method for highway reconstruction and expansion engineering - Google Patents
Anti-false-running intelligent early warning system and method for highway reconstruction and expansion engineering Download PDFInfo
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
Abstract
The invention provides an intelligent early warning system for preventing false break of highway reconstruction and expansion engineering, wherein a sensor is arranged on a reconstruction and expansion highway, and the speed and the vehicle type of vehicles possibly entering a construction operation control area, the traffic flow on the road and the lane occupation rate are monitored and identified through a built-in laser radar and a multi-target millimeter wave radar; three level early warning thresholds are set in the sensor, and the sensor is in linkage control with an audible and visual alarm for early warning, an alarm shoulder lamp and an early warning driving strobe label in a wireless transmission mode and sends out a grading alarm signal; the system background is in communication connection with the sensor and is used for recording detection related data. The invention also provides an intelligent early warning method for preventing false break of the highway reconstruction and expansion project. Compared with other protection facilities, the accident rate of vehicles entering the construction operation control area is reduced by 60% on average, the alarm accuracy rate of the vehicles entering the construction operation control area for constructors is 98%, and the traffic safety risk and accident loss of reconstruction and expansion engineering are obviously reduced.
Description
Technical Field
The invention relates to the technical field of traffic facilities, in particular to an intelligent early warning system and method for preventing false break of highway reconstruction and expansion engineering.
Background
By 2020, the total mileage of expressways in China exceeds 16 ten thousand kilometers, and the first place of the world is continuously listed. However, with the year-by-year increase of traffic flow, existing highway networks have failed to meet the increasing traffic demands, and more reconstruction projects are occurring. Compared with new construction, the highway reconstruction and expansion engineering generally adopts a mode of 'vehicle passing while construction', has complex and changeable traffic organization, serious mutual interference of construction and operation, particularly prominent accident caused by passing vehicles mistakenly entering a construction operation control area, 1057 of collision fixed objects entering the construction operation control area during the construction of the highway reconstruction and expansion engineering in certain province, serious casualties and property loss, and abnormally severe safety situation. However, the accident prevention technology of the current passing vehicles entering the working area by mistake is not perfect, the effective early warning device is lack, and the active early warning system has insufficient multi-scene applicability and the like. The concrete steps are as follows:
problem 1: the accident prevention technology is not perfect, the existing early warning equipment and the used technology do not have the functions of accurately, remotely and regionally identifying dangerous vehicles and performing remote hierarchical warning and driving away, so that the situation that the vehicles enter a construction operation control area or normally pass in an adjacent area but send out warning signals when the equipment triggers the warning is caused, and the active early warning effect is poor; the existing alarm equipment does not have a grading alarm function and can not respectively send alarm signals to related vehicles or personnel according to the needs of different alarm situations.
Problem 2: the lack of an effective early warning device, the conventional temporary traffic safety facilities such as warning, forenotice signs, signs and the like only display fixed contents, the drivers of passing vehicles can not observe the traffic safety facilities timely and effectively, and when the vehicles are not time-consuming, the traffic safety facilities possibly break into a construction operation control area, warning signals can not be sent to the drivers timely; when an accident that the vehicle intrudes into a construction operation control area occurs, the accident vehicle is accurately identified, and a facility lack for effectively escaping early warning signals is sent to nearby construction operators.
Problem 3: the active early warning system has the advantages that the multi-scene applicability is insufficient, the use scene of the existing equipment is single, the existing equipment only sends an alarm to vehicles and personnel at the same time at a fixed point through a tweeter carried by the existing equipment, the alarm coverage area is small, the equipment is single, and the requirement of sending alarm information to the vehicles and construction operators respectively at a long distance and multiple points can not be met when complex scenes such as a central division belt conversion port, an upstream transition zone and the like are enlarged for highway reconstruction; the existing equipment does not have a cooperative linkage function, and can not carry out the combined networking use 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 warning system and method for preventing false break-out in highway reconstruction and expansion engineering, which are used for monitoring and identifying the speed of vehicles possibly breaking into a construction operation control area, the traffic flow on a vehicle type and a road, the occupancy of a lane and the like through a sensor, realizing the coordinated control of an audible and visual alarm, an alarm shoulder lamp and a warning driving stroboscopic sign through a wireless transmission mode according to three set level warning thresholds, sending a grading warning signal, and recording the detection data of the sensor through a system background.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the intelligent warning system for preventing false break-out of highway reconstruction and expansion engineering comprises a sensor, an audible and visual alarm, an alarm shoulder lamp, a warning drive-off strobe label and a system background, wherein the sensor is arranged on a reconstruction and expansion highway, and monitors and identifies the speed of a vehicle possibly entering a construction operation control area, the vehicle type, the traffic flow on the road and the lane occupation rate through a built-in laser radar and a millimeter wave radar; three level early warning thresholds are set in the sensor, and the sensor is in linkage control with an audible and visual alarm for early warning, an alarm shoulder lamp and an early warning driving strobe label in a wireless transmission mode and sends out a grading alarm signal; the system background is in communication connection with the sensor and is used for recording detection related data.
Furthermore, the millimeter wave radar obtains a three-level early warning standard based on time and space characteristics by using the mapping relation between the speed, the distance, the monitored width index parameter and the warning time through the early warning distance, the speed and the laser radar monitoring threshold value.
Further, the early warning driving-off strobe label comprises a primary early warning driving-off strobe label A and a secondary early warning driving-off strobe label B, wherein the millimeter wave radar is set with primary early warning distance and speed, and when the millimeter wave radar recognizes that the vehicle simultaneously meets the primary early warning distance and speed, the millimeter wave radar sends the primary early warning driving-off strobe label A; the millimeter wave radar is provided with a secondary early warning distance and a secondary early warning speed, and when the millimeter wave radar recognizes that the vehicle meets the secondary early warning distance and the secondary early warning speed at the same time, the millimeter wave radar sends the millimeter wave radar to the secondary early warning driving-off strobe sign B.
Further, the laser radar scans the monitoring length, and when a vehicle running by mistake appears in the laser radar scanning area, three-level alarm information is sent to the audible and visual alarm and the alarm shoulder lamp by setting the set scanning monitoring length, so that construction operators are informed of immediately evacuating the scene.
Further, the audible and visual alarm is arranged near construction operators, the alarm shoulder lamp is arranged on the shoulders of the construction operators, and the early warning driving-off strobe sign is arranged on the road side and on the inner side of the closed lane cone.
Further, the sensor is provided with a control panel, and the control panel is provided with a millimeter wave radar monitoring 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, an alarm shoulder lamp and an audible-visual alarm switch button.
In order to achieve the above purpose, the present invention further provides an intelligent early warning method for preventing false break of highway reconstruction and expansion engineering, which uses the intelligent early warning system for preventing false break of highway reconstruction and expansion engineering, comprising the following steps:
s1, determining a sensor layout position according to a layout form of a field construction operation control area;
s2, setting the millimeter wave radar monitoring direction of the sensor as the traffic condition of a warning area to be continuously scanned and monitored by the reverse traffic flow;
s3, setting the laser radar monitoring direction of the sensor to continuously monitor along the direction of the cone barrel of the upstream transition zone;
s4, setting a millimeter wave radar monitoring width, a primary early warning driving-off threshold value, a secondary early warning driving-off threshold value and a laser radar monitoring length threshold value of a sensor according to field monitoring requirements;
s5, erecting a first-level early warning driving strobe label A according to the on-site driving early warning requirement;
s6, arranging a secondary early warning driving-off strobe label B;
s7, arranging an audible and visual alarm near a construction worker, and hanging an alarm shoulder lamp on the shoulder position of the construction worker;
s8, when the sensor recognizes that the vehicle continuously approaches an upstream transition zone and does not change lanes, and the vehicle reaches the primary early warning driving standard, a primary early warning driving signal is sent to a primary early warning driving strobe label A, the evergreen arrow mode is changed into a red fork strobe mode, and the vehicle is prompted to change lanes; when the vehicle does not change lanes and the near distance approach to the upstream transition zone reaches the secondary early warning driving standard, the sensor sends a secondary early warning driving signal to the secondary early warning driving strobe label B, and the evergreen arrow mode is changed into the red fork strobe mode to prompt the vehicle and the time-varying lanes; when the vehicle breaks into a construction operation control area due to no lane change for a certain reason, the sensor laser radar immediately recognizes and triggers a three-level early warning standard, and the sensor sends signals to the audible and visual alarm and the alarm shoulder lamp so as to prompt an operator to withdraw in time; the system background counts data such as vehicle intrusion time, parts, speed, equipment running conditions and the like, analyzes the characteristics of the road segment intrusion traffic accidents, provides basis for on-site protection and traffic control, and monitors the equipment running conditions.
Further, the laser radar monitoring length threshold in the step S4 is determined according to the actual situation of the site, and the length threshold is the distance between the position of the sensor and the ending point of the transition zone; the millimeter wave radar monitoring width can be used for distinguishing a monitored target lane; 1. the secondary early warning driving-off threshold is 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 exceeds the set speed threshold, the sensor can be triggered to drive the strobe sign warning function to the early warning.
Further, the minimum setting value of the secondary early warning driving threshold should be set according to the most adverse condition, that is, the driver fails to change the road after receiving the secondary early warning driving signal, but takes a deceleration measure and stops driving the situation in front of the transition area cone barrel, and the calculation method is as follows:
S 2 setting a minimum suggested value for the distance in the secondary early warning driving threshold of the sensor, V 2 Setting a value, t, for the speed in the sensor secondary early warning driving threshold value 2 And a, the time required for taking braking measures for a driver after the sensor is triggered for the passing vehicle to give a secondary alarm, and a, the average deceleration of the vehicle.
Further, the first-level early warning driving strobe label A in the step S5 is arranged on the right side of the road of the sensor in the reverse vehicle flow direction in a bracket mode, so that the strobe mark of the signpost is opposite to the vehicle driving direction, and the farthest position of the early warning driving strobe label from the sensor can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
wherein L is 1 For primary early warning driving the distance between the flash label A and the furthest distance between the sensor, S 1 Setting a value of 'distance' in a primary early warning driving threshold of the sensor, V 1 Setting a value of 'speed' in a primary early warning driving-off threshold value of a sensor, t 1 The time required for the driver to observe the sign mode change after triggering the sensor primary alarm for passing vehicles.
The beneficial effects are that: compared with other protection facilities, the accident rate of vehicles entering the construction operation control area is reduced by 60% on average, the alarm accuracy of the vehicles entering the construction operation control area for constructors is 98%, the traffic safety risk and accident loss of the reconstruction and expansion engineering are obviously reduced, the traffic safety risk precontrolling level of the reconstruction and expansion engineering is effectively improved, and the method has great significance for guaranteeing the life and property safety of people.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a functional schematic diagram of an intelligent early warning system for preventing false break in highway reconstruction and expansion projects according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of a sensor of an intelligent early warning system for preventing false break in highway reconstruction and expansion engineering according to an embodiment of the present invention;
fig. 3 is an application schematic diagram (normal state and accident state) of an intelligent early warning system for preventing false break of highway reconstruction and expansion engineering according to an embodiment of the present invention;
fig. 4 is a main flowchart of an intelligent early warning method for preventing false break in highway reconstruction and expansion engineering according to an embodiment of the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
See fig. 1-3: the intelligent warning system for preventing false break-out of highway reconstruction and expansion engineering comprises a sensor, an audible and visual alarm, an alarm shoulder lamp, a warning drive-off strobe label and a system background, wherein the sensor is arranged on a reconstruction and expansion highway, and monitors and identifies the speed of a vehicle possibly entering a construction operation control area, the vehicle type, the traffic flow on the road and the lane occupation rate through a built-in laser radar and a millimeter wave radar; three level early warning thresholds are set in the sensor, and the sensor is in linkage control with an audible and visual alarm for early warning, an alarm shoulder lamp and an early warning driving strobe label in a wireless transmission mode and sends out a grading alarm signal; the system background is in communication connection with the sensor and is used for recording detection related data.
The sensor of this embodiment is furnished with laser radar and millimeter wave radar, can effectively monitor, discern speed, motorcycle type and the traffic flow on the road, the lane occupation ratio of probably running into construction operation control district vehicle, according to the three level early warning threshold values that set for, through wireless transmission mode, realize audible and visual annunciator, alarm shoulder lamp and early warning drive from stroboscopic sign coordinated control and send hierarchical alarm signal, through the detection data of system backstage record sensor, thereby realized the multistage intelligent early warning of preventing the mistake of running of highway reconstruction and expansion engineering.
It should be noted that, the sensor of this embodiment includes a central processing unit, a switch module, a communication module, a millimeter wave radar, a laser radar, a data storage module, an early warning threshold parameter setting module and a power module. The sensor is equipped with a laser radar which can effectively detect the distance of 150m, can realize 360-degree angle adjustment, and can transmit laser radar rays along the boundary of a transition section of a construction operation control area to obtain information of a vehicle intrusion control area; 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 of the speed, the position and the like of vehicles passing through the lane can be obtained.
It should be noted that, the system background of the embodiment receives traffic and accident data and equipment operation data detected by the sensor through the 4G/5G network, so as to automatically analyze accident characteristics and road traffic flow characteristics of a certain time period and road section and provide decision basis for later field protection and management and control.
In a specific example, the millimeter wave radar monitors a threshold value through the early warning distance, the speed and the laser radar, and obtains a three-level early warning standard based on time and space characteristics by using the mapping relation between the speed, the distance and the monitored width index parameter and the warning time.
In a specific example, the early warning driving-off strobe label comprises a primary early warning driving-off strobe label A and a secondary early warning driving-off strobe label B, wherein the millimeter wave radar is set with a primary early warning distance and a primary early warning speed, and when the millimeter wave radar recognizes that the vehicle simultaneously meets the primary early warning distance and the primary early warning speed, a primary early warning driving-off signal is sent to the primary early warning driving-off strobe label A; the millimeter wave radar is provided with a secondary early warning distance and a secondary early warning speed, and when the millimeter wave radar recognizes that the vehicle meets the secondary early warning distance and the secondary early warning speed simultaneously, a secondary early warning driving-off signal is sent to the secondary early warning driving-off strobe sign B.
In a specific example, the laser radar scans the monitoring length, and when a wrongly-running vehicle appears in the laser radar scanning area, three-level alarm information is sent to the audible and visual alarm and the alarm shoulder lamp by setting the set scanning monitoring length, so that construction operators are informed of immediately evacuating the scene.
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 driving strobe label is arranged on the road side and on the inner side of the closed lane cone.
The audible and visual alarm and the alarm shoulder lamp of the embodiment receive three-level alarm evacuation signals sent by the sensor;
the audible and visual alarm gives out red and blue explosion flash light and high-pitched alarm sounds to prompt operators to evacuate in time, the audible and visual alarm continuously gives out alarm information for 1min, and the construction operators can stop alarming at any time in a manual mode;
the alarm shoulder lamp prompts the operator to evacuate in time in the forms of vibration, alarm sound and red and blue flashing, the alarm shoulder lamp continuously sends out alarm information for 1min, and the construction operator can stop alarming at any time in a manual mode.
The early warning driving strobe label changes from a evergreen arrow mode to a red fork strobe mode by receiving a primary and a secondary early warning driving signals sent by the sensor so as to prompt the vehicle to timely change lanes. When the vehicle is driven off, the sign changes from red fork strobe mode to evergreen arrow mode. Both modes have strong visibility at night and during the daytime.
In a specific example, the sensor is provided with a control panel, and the control panel is provided with a millimeter wave radar monitoring 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 a millimeter wave radar, an alarm shoulder lamp and an audible-visual alarm switch button.
In summary, the anti-false-running intelligent early warning system of the embodiment has three early warning levels, namely primary and secondary vehicle driving early warning and three-level construction worker evacuation early warning. The grading early warning function is mainly realized through a designed and developed sensor, the effective detection distance of the millimeter wave radar integrated by the sensor can reach 280m, the effective detection distance of the laser radar can reach 150m, and the remote vehicle accurate recognition and the vehicle intrusion operation control area recognition can be realized by setting data parameters such as the monitoring width, the distance and the monitoring distance of the laser radar of the millimeter wave radar, and the grading early warning model of the sensor is used for determining the calculation basis of the early warning grading standard. The early warning driving stroboscopic sign is arranged in advance through research and development, and an alarm signal from a sensor is received, so that the vehicle can be remotely prompted to take lane changing measures in time through changing the stroboscopic mode.
The early warning and driving strobe label developed by the embodiment can be arranged at the road side, the inner side of a closed lane cone barrel and the like, and the label is changed from a evergreen arrow mode to a red fork strobe mode by receiving primary and secondary driving alarm signals sent by a sensor, so that the attention of a driver can be timely attracted to prompt a vehicle to timely change lanes. When the vehicle intrudes into the construction operation control area, the sensor laser radar can accurately identify and trigger three-level early warning, and three-level warning signals are sent to the construction warning shoulder lamp and the audible and visual alarm in a wireless communication mode, so that operators can be timely prompted to escape in time.
The perceptron of this embodiment is equipped with control panel, can realize millimeter wave radar, laser radar, early warning and drive from stroboscopic sign alarming function, alarm shoulder lamp alarming function, audible and visual alarm alarming function's closing and opening, utilizes the loRa communication protocol to carry out coordinated linkage and free networking to the alarm equipment of networking, and the coverage reaches 10km at the longest. The alarm device can be used for closing and opening the alarm function of the early warning driving stroboscopic sign, the alarm shoulder lamp and the audible and visual alarm according to the alarm requirements of multiple scenes, and the alarm devices with the same early warning level can be used for adjusting the arrangement quantity according to the requirements so as to realize the multi-point, long-distance and multi-level alarm functions.
Example 2
To achieve the above object, see fig. 4: the embodiment also provides an intelligent early warning method for preventing false break of highway reconstruction and expansion engineering, which uses the intelligent early warning system for preventing false break of highway reconstruction and expansion engineering, and specifically comprises the following steps:
s1, determining a sensor layout position according to a layout form of a field construction operation control area;
in the embodiment, the sensor is arranged at the intersection of the cone barrel and the wave beam guardrail in the upstream transition zone.
S2, setting the millimeter wave radar monitoring direction of the sensor as the traffic condition of a warning area to be continuously scanned and monitored by the reverse traffic flow;
s3, setting the laser radar monitoring direction of the sensor to continuously monitor along the direction of the cone barrel of the upstream transition zone;
s4, setting key parameters such as a millimeter wave radar monitoring width, a primary early warning driving-off threshold value, a secondary early warning driving-off threshold value, a laser radar monitoring length threshold value and the like of a sensor according to field monitoring requirements; the laser radar monitoring length threshold in the step S4 is determined according to the actual condition of the site, and the length threshold is the distance between the position of the sensor and the ending point of the transition zone; the millimeter wave radar monitoring width can be used for distinguishing a monitored target lane; 1. the secondary early warning driving threshold is realized by setting the distance and the speed of the vehicle distance sensor, when the passing vehicle enters the set monitoring early warning range threshold and the speed exceeds the set speed threshold, the sensor can be triggered to drive the warning function of the strobe sign to the early warning, the minimum setting value of the secondary early warning driving threshold is set according to the least adverse condition, namely, the driver fails to change the road after receiving the secondary driving signal, but takes deceleration measures and stops driving the scene in front of the transition zone cone barrel, and the calculation method is as follows:
S 2 setting a minimum suggested value for the distance in the secondary early warning driving threshold of the sensor, V 2 Setting a value, t, for the speed in the second-level early warning threshold of the sensor 2 And a, the time required for taking braking measures for a driver after the sensor is triggered for the passing vehicle to give a secondary alarm, and a, the average deceleration of the vehicle.
In the field practical application, the primary early warning driving threshold and the secondary early warning driving threshold can be comprehensively determined according to road speed limit, traffic composition and the like. Meanwhile, in order to enable the vehicle to take measures such as speed reduction and lane change after receiving the secondary alarm signal and prevent rushing into a construction operation control area, the embodiment provides a proposal of minimum value of a secondary early warning distance threshold value, so that the normal use of the highway is not influenced by the maximum occupation on the premise of ensuring the safety of road constructors.
S5, erecting a first-level early warning driving strobe label A according to the on-site driving early warning requirement; the first-level early warning driving strobe label A in the step S5 is arranged on the right side of a road in the reverse vehicle flow direction of the sensor in a bracket mode, so that the strobe mark of the mark plate is opposite to the driving direction of the vehicle, and the farthest position of the early warning driving strobe label from the sensor can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
wherein L is 1 For primary early warning driving the distance between the flash label A and the furthest distance between the sensor, S 1 Setting a value of 'distance' in a primary early warning driving threshold of the sensor, V 1 Setting a value of 'speed' in a primary early warning driving-off threshold value of a sensor, t 1 The time required for the driver to observe the sign mode change after triggering the sensor primary alarm for passing vehicles.
In practical application, in order to enhance the warning and driving-off effect on passing vehicles, the first-stage early warning and driving-off strobe signage A can be sequentially provided with a plurality of pieces along the vehicle flow direction according to requirements. The distributed multi-stage one-level early warning driving-off strobe label A can simultaneously receive early warning driving-off signals from the sensor and has synchronous strobe frequency.
S6, arranging a secondary early warning driving-off strobe label B;
the secondary early warning driving stroboscopic sign B is arranged at the middle position of the closed lane at the inner side of the upstream transition zone, so that the stroboscopic sign of the sign board faces to the passing vehicles. The secondary early warning driving strobe label B can be sequentially provided with a plurality of blocks along the direction of the transition area according to the requirement, and simultaneously receives the early warning driving signal from the sensor and has synchronous strobe frequency.
S7, arranging an audible and visual alarm near a construction worker, and hanging an alarm shoulder lamp on the shoulder position of the construction worker;
s8, when the sensor recognizes that the vehicle continuously approaches an upstream transition zone and does not change lanes, and the vehicle reaches the primary early warning driving standard, a primary early warning driving signal is sent to a primary early warning driving strobe label A, the evergreen arrow mode is changed into a red fork strobe mode, and the vehicle is prompted to change lanes; when the vehicle does not change lanes and the near distance approach to the upstream transition zone reaches the secondary early warning driving standard, the sensor sends a secondary early warning driving signal to the secondary early warning driving strobe label B, and the evergreen arrow mode is changed into the red fork strobe mode to prompt the vehicle and the time-varying lanes; when the vehicle breaks into a construction operation control area due to no lane change for a certain reason, the sensor laser radar immediately recognizes and triggers a three-level early warning standard, and the sensor sends signals to the audible and visual alarm and the alarm shoulder lamp so as to prompt an operator to withdraw in time; the system background counts data such as vehicle intrusion time, parts, speed, equipment running conditions and the like, analyzes the characteristics of the road segment intrusion traffic accidents, provides basis for on-site protection and traffic control, and monitors the equipment running conditions.
Compared with other protection facilities, the accident rate of vehicles entering the construction operation control area is reduced by 60% on average, the alarm accuracy of the vehicles entering the construction operation control area is 98% for constructors, the traffic safety risk and accident loss of the reconstruction and expansion engineering are obviously reduced, the traffic safety risk precontrolling level of the reconstruction and expansion engineering is effectively improved, and the method has great significance for guaranteeing the life and property safety of people.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The intelligent early warning system for preventing false break-out of highway reconstruction and expansion engineering is characterized by comprising a sensor, an audible and visual alarm, an alarm shoulder lamp, an early warning drive-off strobe sign and a system background, wherein the sensor is arranged on the reconstruction and expansion highway and is arranged at the intersection of an upstream transition zone cone barrel and a waveform beam guardrail, and the speed, the vehicle type and the traffic flow and the lane occupation rate of vehicles possibly entering a construction operation control zone are monitored and identified through a built-in laser radar and a millimeter wave radar; three level early warning thresholds are set in the sensor, and the sensor is in linkage control with an audible and visual alarm for early warning, an alarm shoulder lamp and an early warning driving strobe label in a wireless transmission mode and sends out a grading alarm signal; the system background is in communication connection with the sensor and is used for recording detection related data, the early warning driving-off strobe label comprises a first-stage early warning driving-off strobe label A and a second-stage early warning driving-off strobe label B, the first-stage early warning driving-off strobe label A is arranged on the right side of a road in the reverse vehicle flow direction of the sensor in a bracket mode, a strobe sign of a sign board of the first-stage early warning driving-off strobe label A faces the driving-on direction of a vehicle, the second-stage early warning driving-off strobe label B is arranged in the middle position of a closed lane at the inner side of an upstream transition zone, the strobe sign of the sign board of the first-stage early warning driving-off strobe label B faces a passing vehicle, the millimeter wave radar is provided with a first-stage early warning distance and a first-stage early warning speed, and when the millimeter wave radar recognizes that the vehicle simultaneously meets the first-stage early warning distance and the first-stage early warning speed, the first-stage early warning driving-off signal is sent to the first-stage early warning driving-off strobe label A; the millimeter wave radar is provided with a secondary early warning distance and a secondary early warning speed, when the millimeter wave radar recognizes that the vehicle meets the secondary early warning distance and the secondary early warning speed simultaneously, a secondary early warning driving signal is sent to a secondary early warning driving stroboscopic sign B, the laser radar scans the monitoring length, the set scanning monitoring length is set, and when the vehicle is wrongly broken in a laser radar scanning area, three-level warning information is sent to an audible-visual alarm and a warning shoulder lamp, and construction operators are informed of immediately evacuating the scene.
2. The intelligent warning system for preventing false break of highway reconstruction and expansion engineering according to claim 1, wherein the millimeter wave radar obtains three-level warning standards based on time and space characteristics by pre-warning distance and speed and utilizing the mapping relation between speed, distance and monitoring width index parameters and warning time.
3. The intelligent warning system for preventing false break of highway reconstruction and expansion engineering according to claim 1, wherein the audible and visual alarm is arranged near a construction operator, the warning shoulder lamp is arranged on the shoulder of the construction operator, and the warning driving stroboscopic sign is arranged on the road side and on the inner side of the closed lane cone.
4. The intelligent warning system for preventing false break of highway reconstruction and expansion engineering according to claim 1, wherein the sensor is provided with a control panel, and the control panel is provided with a millimeter wave radar monitoring width, a millimeter wave radar primary warning distance and speed, a millimeter wave radar secondary 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.
5. An intelligent early warning method for preventing false break of highway reconstruction and expansion engineering is characterized by using the intelligent early warning system for preventing false break of highway reconstruction and expansion engineering as set forth in any one of claims 1-4, and specifically comprising the following steps:
s1, determining a sensor layout position according to a layout form of a field construction operation control area;
s2, setting the millimeter wave radar monitoring direction of the sensor as the traffic condition of a warning area to be continuously scanned and monitored by the reverse traffic flow;
s3, setting the laser radar monitoring direction of the sensor to continuously monitor along the direction of the cone barrel of the upstream transition zone;
s4, setting a millimeter wave radar monitoring width, a primary early warning driving-off threshold value, a secondary early warning driving-off threshold value and a laser radar monitoring length threshold value of a sensor according to field monitoring requirements;
s5, erecting a first-level early warning driving strobe label A according to the on-site driving early warning requirement;
s6, arranging a secondary early warning driving-off strobe label B;
s7, arranging an audible and visual alarm near a construction worker, and hanging an alarm shoulder lamp on the shoulder position of the construction worker;
s8, when the sensor recognizes that the vehicle continuously approaches an upstream transition zone and does not change lanes, and the vehicle reaches the primary early warning driving standard, a primary early warning driving signal is sent to a primary early warning driving strobe label A, the evergreen arrow mode is changed into a red fork strobe mode, and the vehicle is prompted to change lanes; when the vehicle does not change lanes and the near distance approach to the upstream transition zone reaches the secondary early warning driving standard, the sensor sends a secondary early warning driving signal to the secondary early warning driving strobe label B, and the evergreen arrow mode is changed into the red fork strobe mode to prompt the vehicle and the time-varying lanes; when the vehicle breaks into a construction operation control area due to no lane change for a certain reason, the sensor laser radar immediately recognizes and triggers a three-level early warning standard, and the sensor sends signals to the audible and visual alarm and the alarm shoulder lamp so as to prompt an operator to withdraw in time; the system background counts data such as vehicle intrusion time, parts, speed, equipment running conditions and the like, analyzes the characteristics of the road segment intrusion traffic accidents, provides basis for on-site protection and traffic control, and monitors the equipment running conditions.
6. The intelligent early warning method for preventing false break of highway reconstruction and expansion project according to claim 5, wherein the length threshold value of the laser radar monitoring in the step S4 is determined according to the actual condition of the site, and the length threshold value is the distance between the position of the sensor and the ending point of the transition zone; the millimeter wave radar monitoring width can be used for distinguishing a monitored target lane; 1. the secondary early warning driving-off threshold is 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 exceeds the set speed threshold, the sensor can be triggered to drive the strobe sign warning function to the early warning.
7. The intelligent warning method for preventing false break of highway reconstruction and expansion engineering according to claim 6, wherein the minimum setting value of the secondary warning driving threshold is set according to the most unfavorable condition, namely that the driver fails to change the road after receiving the secondary warning driving signal, takes a deceleration measure and stops driving in the situation in front of the transition zone cone barrel, and the calculation method is as follows:
S 2 setting a minimum suggested value for the distance in the secondary early warning driving threshold of the sensor, V 2 Setting a value, t, for the speed in the sensor secondary early warning driving threshold value 2 For passing vehiclesAnd a, after the secondary alarm of the vehicle triggering sensor, the time required by the driver to take braking measures, namely the average deceleration of the vehicle.
8. The intelligent warning method for preventing false break of highway reconstruction and expansion project according to claim 5, wherein the first-stage warning driving strobe label a in step S5 is arranged on the right side of the road in the reverse traffic direction of the sensor in a bracket form, so that the strobe mark of the sign board is opposite to the driving direction of the vehicle, and the farthest position of the warning driving strobe label from the sensor can be determined according to the following formula:
L 1 ＝S 1 -V 1 ·t 1
wherein L is 1 For primary early warning driving the distance between the flash label A and the furthest distance between the sensor, S 1 Setting a value of 'distance' in a primary early warning driving threshold of the sensor, V 1 Setting a value of 'speed' in a primary early warning driving-off threshold value of a sensor, t 1 The time required for the driver to observe the sign mode change after triggering the sensor primary alarm for passing vehicles.
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