CN112442959B - Intelligent intercepting system for out-of-control vehicles on highway - Google Patents

Abstract

The invention discloses an intelligent interception system for out-of-control vehicles on expressways, which belongs to the field of highway safety and mainly includes a detection module, a control module and an execution module; On the upper, the speed camera is used to detect the vehicle speed and determine the interception range. The quality detection device consists of multiple pressure sensors, which are laid at the entrance of the emergency avoidance road to detect the quality of the vehicle; the execution module includes two sets of interception net devices and automatic alarm devices. The intercepting net is equipped with a tension sensor and is fixed on the fixed pile by the rope retracting device, and the second intercepting net is fixed on the fixed pile by the rope retracting device, and the position of the intercepting net is adjusted by the sliding rail. The invention monitors the deceleration situation of the vehicle in real time during the interception process, and adjusts the pulling force of the interception rope in real time according to the deceleration situation of the vehicle, so as to ensure the safety of the driver and the vehicle, and realize safe interception.

Description

An intelligent interception system for out-of-control vehicles on expressways

technical field

The invention belongs to the field of highway safety protection, in particular to an intelligent interception system for out-of-control vehicles on a highway.

Background technique

Expressways have the advantages of high transportation efficiency, large freight capacity, and low transportation costs. However, continuous use of the brakes after the vehicle has entered a downhill section may easily cause the brake pads of the vehicle to overheat, resulting in reduced braking performance or brake failure, resulting in rear-end collisions, collisions, and car crashing off cliffs. Serious traffic accidents such as death.

In today's rapid development of society, in order to fully protect the safety of people and vehicles, technicians have designed an emergency escape lane. The emergency escape lane is connected to the main lane and is an auxiliary lane specially set up to slow down the speed of an out-of-control vehicle and make the vehicle stop safely. . However, there are also some problems in the emergency avoidance lane. For example, the emergency avoidance lane needs to be set up with a long wavy road for buffering, and the downhill section needs to be set up with an uphill auxiliary lane. When the kinetic energy of the vehicle is too large, the vehicle may rush out of the escape lane. It is a safety hazard, and the wavy gravel road will cause the vehicle to bump sharply, causing personal injury and vehicle damage. At present, the emergency avoidance lane cannot monitor the vehicle status in real time. For different vehicle models, one type of avoidance lane is used uniformly, which is not conducive to the targeted deceleration of the vehicle.

Therefore, using electronic equipment to monitor the driving status in real time and taking targeted measures will more effectively ensure the safety of drivers and vehicles.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intelligent interception system for out-of-control vehicles on expressways, so as to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an intelligent interception system for out-of-control vehicles on expressways, comprising a detection module, a control module, and an execution module, and the detection module includes speed detection, interception range detection, quality detection, and interception network. Tensile force detection, the speed detection and interception range detection are carried out by the speed camera installed on the fixed crossbar, the quality detection is to lay the quality detection device at the entrance of the road, and the interception net tensile force detection is to use the tensile force sensor. Set in the interception network.

The execution module includes two sets of intercepting net devices and an automatic alarm device; the two sets of intercepting net devices include a first intercepting net and a second intercepting net; the first intercepting net includes a rope retracting device and a tension sensor; the The second intercepting net includes a rope retraction device and a slide rail; the automatic alarm device includes a network alarm and an on-site warning part, the network alarm is connected to the traffic police service center through the network, and the phenomenon warning part is installed at the entrance of the emergency escape road.

Preferably, the control module is controlled by PLC.

Preferably, the tension sensor uses an S-type tension sensor.

Preferably, the slide rails used in the second intercepting net are electric double-axis slide rails.

Preferably, the vehicle quality detection device can use a quartz dynamic truck scale, so that the vehicle quality can be accurately measured when the vehicle is out of control at a high speed.

Preferably, a working process of an intelligent highway out-of-control vehicle interception system includes the following steps:

Step 1: The quality inspection device is located at the entrance of the emergency escape road. The speed measurement camera measures the speed and captures the interception range information. The measured data is transmitted to the control system. The control system processes the information and calculates the time when the vehicle runs to the first interception net It has the initial kinetic energy to judge whether it is within the interception capability of the first interception net, and starts the first interception. During the interception, the pulling force when the vehicle hits the intercepting net is measured through the pull force sensor, and the interception net is controlled according to the pulling force. .

The specific analysis process is as follows:

The mass detection device measures the mass m of the vehicle to be intercepted, and the speed camera detects the initial speed V ₁ of the vehicle:

G _car = mg (1)

F ₁ = μG _car (2)

(2) where F ₁ is the frictional resistance received by the vehicle when it is not intercepted, and μ is the friction coefficient between the vehicle and the ground. When the vehicle touches the interception net, there are:

F ₁ +F ₂ =ma (3)

F ₂ is the resistance of the intercepting net to the vehicle, a is the acceleration of the vehicle deceleration. Suppose a _m is the maximum acceleration during the deceleration process of the car under the premise of ensuring the safety of the driver and the car. When F ₂ increases, a increases. When a is close to a _m , in order to ensure the safety of the driver and the car, it is necessary to reduce F ₂ , that is, to lengthen the intercepting net rope. Through this process, the size of F ₂ is adjusted in real time, so as to ensure the safety of the driver and the car. Under the premise of safety, reduce the speed of the vehicle to the safe speed V ₂ in the shortest time, wherein whether the vehicle reaches the safe speed V ₂ can be measured by the second speed camera.

During the interception process, a is always close to a _m , and it can be considered that a= _am , and the distance S at which the speed V ₁ decreases to the safe speed V ₂ when the vehicle hits the first intercepting net (4) can be predicted in advance, as follows:

Step 2: The second interception net is set at the theoretical interception limit distance of the first interception net. If the vehicle speed does not drop to a safe speed when the first interception net is pulled to the limit distance, the first interception is invalid, and the rope of the first interception net is retracted. The release device continuously releases the rope. The control module determines the interception range according to the detection of the head of the vehicle, controls the actuator to move the slide rail, adjusts the position of the second interception net, and immediately activates the second interception net to achieve more accurate interception of the vehicle. If the interception by the second intercepting net fails, both the first intercepting net and the second intercepting net rope retracting device continue to release the ropes.

Step 3: When the second interception net fails to intercept, the vehicle will enter the traditional gravel road for physical friction interception.

Step 4: When the interception is over, the automatic alarm device is triggered.

Beneficial effects:

(1) An intelligent interception system for out-of-control vehicles on expressways of the present invention uses interception nets to intercept vehicles. Compared with traditional wave-shaped gravel lanes, the lanes used by the interception system are more stable, so as to avoid personnel injuries and injuries caused by sudden vehicle bumps. Vehicle damage.

(2) An intelligent interception system for out-of-control vehicles on expressways of the present invention adopts an interception net system, which can monitor vehicle information in real time, determine the interception range, adjust the pulling force of the interception net, analyze the force of vehicles, and intercept them in a targeted manner.

(3) An intelligent interception system for out-of-control vehicles on the expressway of the present invention can realize automatic alarm at the first time. If the driver is in a coma, the traffic police department can timely and effectively treat the driver.

(4) An intelligent interception system for an out-of-control vehicle on an expressway of the present invention reduces the workload of laying a large amount of sand and gravel and the terrain requirements for uphill sections. This interceptor system is powered by electricity and is easy to maintain.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an intelligent interception system for an out-of-control vehicle on a highway according to the present invention.

FIG. 2 is a cross-sectional view of a rope retracting device of an intelligent interception system for an out-of-control vehicle on a highway according to the present invention.

3 is a schematic diagram of the interception range of an interception net of an intelligent interception system for an out-of-control vehicle on a highway according to the present invention.

FIG. 4 is a block diagram of the overall structure of an intelligent interception system for an out-of-control vehicle on a highway according to the present invention.

FIG. 5 is a working flow chart of an intelligent interception system for an out-of-control vehicle on a highway according to the present invention.

In the picture: 1. Quality inspection device; 2. Speed camera 1; 3. Speed camera 2; 4. First intercepting net; 5. Second intercepting net; Stone pavement; 9. Rope retraction device; 10. Motor; 11. Intercept range map.

Detailed ways

Embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in Figure 1-5, an intelligent interception system for out-of-control vehicles on expressways includes a detection module, a control module, and an execution module. The detection modules are respectively a quality detection device 1, a speed camera 2, a speed camera 2 3, Tension sensor, the quality detection device 1 is a quality detection board composed of a plurality of pressure sensors, the quality detection board is laid at the entrance of the emergency avoidance road, and the speed measurement camera 1 2 and the speed measurement camera 2 3 are respectively installed on the intercepting net to fix On the pile 6, the speed camera 1 2 provides the vehicle speed information and the interception range for the control module; the speed camera 2 3 is used to monitor the speed in the interception process, and the tension sensor is fixed on the first interception net 4.

The execution module includes two sets of interception net devices and automatic alarm devices;

The two sets of intercepting net devices include a first intercepting net 4 and a second intercepting net 5;

The first intercepting net 4 includes a rope retracting device 9;

The second intercepting net 5 includes a rope retracting device 9 and a sliding rail 7;

The automatic alarm device includes a network alarm and an on-site warning part, the network alarm is connected to the traffic police service center through the network, and the phenomenon warning part is installed at the entrance of the emergency escape road;

The tensile force sensor can be selected as an S-type structure sensor;

The tension sensor is fixed on the four corner ropes of the intercepting net;

The first intercepting net rope retracting device 9 is arranged inside the fixed pile, and the rope is connected to the motor 10;

The second intercepting net rope can adjust the position of the intercepting net through the lifting and lowering of the pulley on the sliding rail, and the sliding rail adopts a dual-axis electronically controlled sliding rail;

The rope retracting and retracting device 9 performs retracting and retracting changes according to the analysis and calculation of the vehicle motion state;

The detection module, the control module and the execution module are electrically connected.

The interception process includes the following steps:

Step 1: The quality inspection device 1 is at the entrance of the emergency avoidance road, and the speed measuring camera 1 2 measures the speed and captures the information of the interception range, and transmits the measured data to the control system, which processes the information and calculates that the vehicle runs to the first interception network. The initial kinetic energy at 4 o'clock determines whether it is within the interception capability of the first intercepting net 4, and starts the first interception. During the interception, the pulling force when the vehicle hits the intercepting net is measured through the pulling force sensor, and the interception is determined according to the pulling force. Network retraction control.

The specific analysis process is as follows:

The mass detection device 1 measures the mass m of the vehicle to be intercepted, and the speed camera 1 2 detects the initial speed V ₁ of the vehicle:

G _car = mg (1)

F ₁ = μG _car (2)

(2) where F ₁ is the frictional resistance received by the vehicle when it is not intercepted, and μ is the friction coefficient between the vehicle and the ground. When the vehicle touches the interception net, there are:

F ₁ +F ₂ =ma (3)

F ₂ is the resistance generated by the intercepting net to the vehicle, and a is the acceleration of vehicle deceleration. Suppose a _m is the maximum acceleration during the deceleration process of the car under the premise of ensuring the safety of the driver and the car. When F ₂ increases, a increases. When a is close to a _m , in order to ensure the safety of the driver and the car, it is necessary to reduce F ₂ , that is, to lengthen the intercepting net rope. Through this process, the size of F ₂ is adjusted in real time, so as to ensure the safety of the driver and the car. On the premise of safety, reduce the speed of the vehicle to the safe speed V ₂ in the shortest time, wherein whether the vehicle reaches the safe speed V ₂ can be measured by the speed camera II 3 .

During the interception process, a is always close to a _m , and it can be considered that a= _am , and the distance S at which the speed V ₁ decreases to the safe speed V ₂ when the vehicle hits the first intercepting net (4) can be predicted in advance, as follows:

Step 2: The second interception net 5 is set at the theoretical interception limit distance of the first interception net 4. If the vehicle speed does not drop to a safe speed when the first interception net 4 is pulled to the limit distance, the first interception fails and the first interception fails. The net rope retraction device continuously releases the rope. The control module determines the interception range according to the detection of the head of the vehicle, controls the actuator to move the slide rail 7, adjusts the position of the second interception net, and immediately activates the second interception net 5 to achieve more accurate interception of the vehicle. If the interception by the second intercepting net fails, both the first intercepting net and the second intercepting net rope retracting device continue to release the ropes.

Step 3: When the second interception net 5 fails to intercept, the vehicle will enter the traditional gravel road 8 for physical friction interception.

Step 4: When the interception is over, the automatic alarm device is triggered.

The specific embodiments of the present invention have been described above in detail, but they are only used as examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, equivalent changes and modifications made without departing from the spirit and scope of the present invention are all included within the scope of the present invention.

Claims (3)

1. an intelligent interception system for an out-of-control vehicle on an expressway, characterized in that: It includes a detection module, a control module, and an execution module, and the detection modules respectively have a quality detection device (1), a speed camera (2), a speed camera two (3), and a tension sensor, and the quality detection device (1) is A quality inspection board composed of a plurality of pressure sensors, the quality inspection board is laid at the entrance of the emergency avoidance road, the speed measuring camera is installed on the entrance fixed pile, and the first (2) speed measuring camera is to provide vehicle speed information for the control module and the interception range (11); the second (3) of the speed measuring camera is for monitoring the speed in the interception process, and the tension sensor is fixed on the first interception net (4); The execution module includes two sets of interception net devices and automatic alarm devices; The two sets of intercepting net devices comprise a first intercepting net (4) and a second intercepting net (5); The first intercepting net (4) includes a rope retracting device (9) and a tension sensor; The second intercepting net (5) includes a rope retracting device (9) and a sliding rail (7); The automatic alarm device includes network alarm and on-site warning parts, the network alarm is connected to the traffic police service center through the network, and the phenomenon warning part is installed at the entrance of the emergency escape road; The tension sensor adopts S-type structure sensor; The tension sensor is fixed on the four corner ropes of the intercepting net; The rope retracting device (9) is arranged inside the intercepting net fixing pile (6), and the rope is connected to the motor (10); The rope of the intercepting net can adjust the position of the intercepting net through the sliding rail (7), and the sliding rail (7) adopts a dual-axis electronically controlled sliding rail; The rope retracting and retracting device (9) retracts and retracts according to the result of analyzing and calculating the motion state of the vehicle; The detection module, the control module and the execution module are electrically connected. 2. a kind of expressway out-of-control vehicle intelligent interception method, is characterized in that, adopts a kind of expressway out-of-control vehicle intelligent interception system described in claim 1, comprises the following steps: Step 1: The quality inspection device (1) is at the entrance of the emergency avoidance road, and the speed measuring camera (2) measures the speed and captures the information of the interception range. The measured data is transmitted to the control system, and the control system processes the information to calculate the vehicle running The initial kinetic energy of the first intercepting net (4) is used to determine whether it is within the intercepting capability of the first intercepting net (4), and the first interception is started. During the interception, the tension sensor detects that the vehicle hits the intercepting net. The pulling force at the time, according to the pulling force to control the retraction and release of the intercepting net; Step 2: The second intercepting net (5) is set at the theoretical interception limit distance of the first intercepting net (4). When the interception fails, the first intercepting net rope retraction device continuously releases the rope, the control module determines the interception range according to the detection head, controls the actuator to move the slide rail (7), adjusts the position of the second intercepting net (5), and immediately activates the second interception The net (5) is used to achieve more precise interception of the vehicle. If the interception of the second interception net (5) fails, the rope retraction device (9) provided on the first interception net (4) and the second interception net (5) ) continuously release the rope; Step 3: When the second interception net (5) fails to intercept, the vehicle will enter the traditional gravel road (8) for physical friction interception; Step 4: When the interception is over, the automatic alarm device is triggered. 3. a kind of highway out-of-control vehicle intelligent interception method according to claim 2 is characterized in that: In step 1, the mass detection device (1) measures the mass m of the vehicle to be intercepted, and the speed camera (2) detects the initial speed V ₁ of the vehicle: G _car = mg (1) F ₁ = μG _car (2) In the formula, F ₁ is the frictional resistance received by the vehicle when it is not intercepted, and μ is the friction coefficient between the vehicle and the ground. When the vehicle contacts the intercepting net, there are: F ₁ +F ₂ =ma (3) F ₂ is the resistance of the intercepting net to the vehicle, a is the acceleration of the vehicle deceleration, assuming that a _m is the maximum acceleration during the deceleration process of the vehicle under the premise of ensuring the safety of the driver and the car, when F ₂ increases, a increases, and when a When approaching a _m , in order to ensure the safety of the driver and the car, it is necessary to reduce F ₂ , that is, to lengthen the intercepting net rope. Through this process, the size of F ₂ is adjusted in real time. On the premise of ensuring the safety of the driver and the car, the speed of the vehicle in the shortest time is ensured. Decrease to the safe speed V ₂ , wherein whether the vehicle reaches the safe speed V ₂ can be measured by the speed camera two (3), During the interception process, a is always close to a _m , and it can be considered that a= _am , and the distance S at which the speed V ₁ decreases to the safe speed V ₂ when the vehicle hits the first intercepting net (4) can be predicted in advance, as follows:

Images