CN110080136B - Intelligent vehicle rollover protection system and control method thereof - Google Patents

Abstract

The invention discloses an intelligent vehicle rollover protection system and a control method thereof. The vehicle rollover intelligent protection system includes a judgment module and a protection unit; the judgment module includes a sensor unit, a first controller, and a signal transmitter; the sensor unit includes a level and a gyroscope; the protection unit includes a signal receiver, a second controller, a column, a diagonal brace, a beam, a buffer device, a first bearing, a second bearing, and an adjustment column; the adjustment column includes a push rod, a cylinder, and a power gas generating unit; The screw instrument and the signal transmitter are electrically connected; the second controller is electrically connected with the signal receiver, the power gas generating unit and the air bag gas generator respectively. The invention has a simple structure, and can realize the communication between the vehicle and the guardrail through the Internet of Things. The guardrail adjusts its posture at the position where collision may occur, and opens the buffer airbag to reduce the impact on the vehicle.

Description

A vehicle rollover intelligent protection system and its control method

technical field

The invention relates to the field of vehicle safety, in particular to a vehicle rollover safety barrier and a control method thereof.

Background technique

With the rapid development of the automobile industry and the national economy, the number of automobiles in my country has ranked among the top in the world. In particular, household SUVs, passenger cars and trucks have become the main means of road transportation in my country. However, these types of vehicles have more passengers or cargo, larger mass and volume, and a higher center of mass. The guardrail is an effective protective measure to effectively buffer and block the rollover of the vehicle, which will prevent the vehicle from rolling over further and prevent the surrounding vehicles and personnel from being injured.

In order to solve the above problems, many and various highway guardrails have occurred on the market. For example, "a highway guardrail structure" (application number 201811015191.3) invented by Yang Guang et al., through the spring between the upper beam and the lower beam, can effectively absorb energy in the event of a collision and reduce the damage of passengers. But the size design of this invention is only suitable for the frontal or side collision of small vehicle, when meeting large passenger car and truck rollover, be not the frontal collision of guardrail, but collide from the oblique top of guardrail. At this time, the pillars of the guardrail will first contact the vehicle body, causing greater damage to some areas of the vehicle body, and even intrude into the interior of the vehicle body, directly causing greater damage to passengers.

The "highway guardrail" (application number 201810826222.7) invented by Lou Yuefang, through the installation of buffer pads and sliding mechanisms, can alleviate the collision between the vehicle and the guardrail at low speed, and at the same time remind the driver so that the driver can perform related operations to avoid further collisions. But this invention can only play the effect of mitigating collision and reminding to the vehicle running at low speed, because the cushioning function of guardrail buffer pad is limited, when vehicle collides with guardrail when running at high speed, the energy absorbed by it accounts for the proportion of total collision energy is small, it is difficult to other effects of mitigating collision. At the same time, in the high-speed driving state, the guardrail cannot remind the driver.

"A smart guardrail based on Internet of Things technology" (application number 201810035532.7) invented by Wang Benxun. By installing several bearings on the outside of the railing, when the vehicle hits the railing, the car body can roll on the railing through the bearings, thereby reducing the deformation of the car body during the collision. At the same time, after sensing a collision, the guardrail can automatically send an alarm to the nearby traffic police department through the Internet of Things. However, this invention has complex structure, high cost and relatively large installation difficulty, and when a collision occurs, the control system is easily destroyed and cannot send an alarm signal.

To sum up, most of the current guardrails only consider the frontal collision and side collision of small vehicles, and there is no guardrail that can face different models and different collision conditions at the same time, and can play a good protective role. Because the center of mass of buses and large trucks is high and the mass is relatively large, when a rollover occurs, the top of the existing guardrail is often in contact with the body first, which not only cannot protect it, but will increase the deformation of the body.

Contents of the invention

The technical problem to be solved by the present invention is to provide a vehicle rollover protective barrier and its control method for the defects involved in the background technology. The vehicle and the guardrail can communicate with each other through the technology of the Internet of Things, so that the guardrail can adjust different postures according to the size of the vehicle type, make the collision contact surface larger, and avoid excessive deformation of the local vehicle body. At the same time, it is equipped with an airbag module, which can open the airbag according to the signal sent by the vehicle, so as to play a buffer role and reduce damage.

The present invention adopts the following technical solutions for solving the problems of the technologies described above:

An intelligent vehicle rollover protection system and its control method, including a judgment module and a protection module;

The judging module is arranged on the vehicle and includes a level, a gyroscope, a storage unit, a first controller and a signal transmitter;

The spirit level and the gyroscope are arranged at the center of mass of the vehicle, both of which are used to detect the vehicle body roll angle of the passenger car, and transmit the measured vehicle body tilt angle to the first controller;

The signal transmitter is arranged at the axis of the front beam of the vehicle, and is used to send an alarm signal to the protection units within its working range;

The storage unit is used to store the size information of the vehicle model, and the size information of the vehicle type is a small car, a medium-sized car or a large car;

The first controller is electrically connected to the level meter, the gyroscope, the storage unit, and the signal transmitter respectively, and is used to judge whether the vehicle body rolls over according to the induction signals of the level sensor and the gyroscope sensor, and if rollover occurs, the signal transmitter is controlled to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information;

The protection module includes a number of protection units arranged on the road where protection is required, and the protection unit includes a signal receiver, a second controller, a column, a brace, a beam, an adjustment column and a buffer device;

The column is vertically fixed on the ground; the diagonal brace and the crossbeam are respectively arranged on both sides of the column, and the adjusting column and the crossbeam are located on the same side of the column, wherein one end of the diagonal brace is fixedly connected with the column, and the other end is fixedly connected with the ground, so that a right triangle is formed between the column, the diagonal brace and the ground, which is used to enhance the anti-destructive ability of the column; one end of the crossbeam is vertically connected with the column, and the other end is hinged with the buffer device; It is hinged with the buffer device, and the hinge of the adjustment post and the buffer device is higher than the joint between the adjustment post and the upright post;

The regulating column includes a cylinder and first to third power gas generators; the cylinder adopts a single-acting cylinder, the cylinder of which is fixedly connected with the column, and the piston rod is hinged to the buffer device; the first to third power gas generators are all arranged on the bottom wall of the cylinder barrel, and the inner wall of the cylinder barrel is provided with a snap ring for preventing the cylinder piston from pressing the first to third power gas generators; the first to third power gas generators are used to ignite according to the instructions of the second controller, and release gas to push the piston rod of the cylinder to move outward , and then push the buffer device upward;

The buffer device includes a housing, an airbag gas generator, an airbag webbing and a plastic sheet; the housing is a hollow cylinder with one end open and the other closed; the plastic sheet is fixedly connected to the opening of the casing and cooperates with the housing to form a closed cavity; the airbag gas generator and the airbag webbing are all arranged in the cavity formed by the plastic sheet and the housing, and the airbag gas generator is used to release gas to inflate the airbag webbing according to the instructions of the second controller, so that the airbag webbing expands and breaks the plastic sheet; The closed end is respectively hinged to the beam and the adjustment column;

The signal receiver is used to receive the alarm signal sent by the signal transmitter, and transmit the received alarm signal to the second controller;

The second controller is electrically connected to the signal receiver, the first to the third power gas generators, and the air bag gas generator respectively, and is used to control the first to third power gas generators and the air bag gas generator to work according to the alarm signal received by the signal receiver.

As a further optimization scheme of the vehicle rollover intelligent protection system of the present invention, the working range of the signal transmitter is 3-5 meters.

As a further optimization solution of the vehicle rollover intelligent protection system of the present invention, when the first to third power gas generators are not working, the plane where the closed end of the buffer device housing is located is parallel to the axis of the upright.

The invention also discloses a control method of the vehicle rollover intelligent protection system, which includes the following steps:

Step 1), the level sensor and the gyroscope sensor respectively collect the body roll angle signal of the vehicle and transmit it to the first controller;

Step 2), the control module uses the Kalman filter to combine the information of the vehicle body roll angle collected by the gyro sensor and the level sensor to obtain the combined vehicle body roll angle, and judge whether the vehicle body rollover occurs through the combined vehicle body roll angle;

Step 3), if it is judged that the vehicle rolls over, the first controller controls the signal transmitter to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information;

Step 4), each protection unit within the working range of the signal generator receives the alarm signal and outputs it to its second controller, for each protection unit:

Step 4.1), if the vehicle size information is a small car, the second controller controls the ignition of the first power gas generator;

If the vehicle size information is a medium-sized car, the second controller controls the ignition of the first and second power gas generators;

If the vehicle size information is a large vehicle, the second controller controls the ignition of the first, second and third power gas generators;

Step 4.2), the piston of the cylinder slides, so that the piston rod of the cylinder pushes the buffer device to rotate around the end of the beam away from the column;

Step 4.3), the second controller controls the ignition of the gas generator of the airbag, and releases gas to inflate the webbing of the airbag, so that the webbing of the airbag expands and breaks the plastic sheet, buffering the impact of the vehicle.

Compared with the prior art, the present invention adopts the above technical scheme and has the following technical effects:

1. Simple structure, small space occupation, easy installation and maintenance.

2. It is highly intelligent, and can obtain vehicle rollover and model information in a timely manner through the Internet of Things communication technology with the vehicle, so as to take different measures for different situations.

3. High flexibility. The guardrail can control the buffer device at three angles. Corresponding to different models, different angles are used to make the contact surface between the vehicle and the guardrail larger and avoid excessive deformation in local areas.

4. The cushioning effect is strong, the guardrail is equipped with airbags, and the airbags are opened according to the signal sent by the vehicle. Because the vehicle has an initial speed, it will still move along the axial direction during the rollover process, so that the airbags along the way will be opened to buffer the larger body area.

Description of drawings

Fig. 1 is a schematic diagram when the protection unit is not opened in the present invention;

Fig. 2 is a schematic diagram when the protection unit is opened in the present invention;

Fig. 3 is the structural representation of adjusting column in the present invention;

Fig. 4 is the structural representation of buffer device in the present invention;

Fig. 5 is a schematic diagram of communication between the vehicle module and each protection unit of the present invention;

Fig. 6 is a schematic diagram of the effect of the present invention;

Fig. 7 is a control flowchart of the present invention;

Among the figure, 1-column, 2-slanting brace, 3-beam, 4-buffer device, 5-adjusting column, 6-piston of cylinder, 7-piston rod of cylinder, 8-clip, 9-first power gas generator, 10-second power gas generator, 11-third power gas generator, 12-housing, 13-airbag gas generator, 14-plastic plate, 15-airbag webbing.

Detailed ways

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

The invention discloses a vehicle rollover intelligent protection system and a control method thereof, which include a judgment module and a protection module;

The judging module is arranged on the vehicle and includes a level, a gyroscope, a storage unit, a first controller and a signal transmitter;

The spirit level and the gyroscope are arranged at the center of mass of the vehicle, both of which are used to detect the vehicle body roll angle of the passenger car, and transmit the measured vehicle body tilt angle to the first controller;

The signal transmitter is arranged at the axis of the front beam of the vehicle, and is used to send an alarm signal to the protection units within its working range;

The storage unit is used to store the size information of the vehicle model, and the size information of the vehicle type is a small car, a medium-sized car or a large car;

The first controller is electrically connected to the level meter, the gyroscope, the storage unit, and the signal transmitter respectively, and is used to judge whether the vehicle body rolls over according to the induction signals of the level sensor and the gyroscope sensor, and if rollover occurs, the signal transmitter is controlled to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information;

The protection module includes a number of protection units arranged on the road where protection is required, as shown in Figure 1 and Figure 2, the protection unit includes a signal receiver, a second controller, a column, a brace, a crossbeam, an adjustment column and a buffer device;

The column is vertically fixed on the ground; the diagonal brace and the crossbeam are respectively arranged on both sides of the column, and the adjusting column and the crossbeam are located on the same side of the column, wherein one end of the diagonal brace is fixedly connected with the column, and the other end is fixedly connected with the ground, so that a right triangle is formed between the column, the diagonal brace and the ground, which is used to enhance the anti-destructive ability of the column; one end of the crossbeam is vertically connected with the column, and the other end is hinged with the buffer device; It is hinged with the buffer device, and the hinge of the adjustment post and the buffer device is higher than the joint between the adjustment post and the upright post;

As shown in Figure 3, the adjustment column includes a cylinder and first to third power gas generators; the cylinder adopts a single-acting cylinder, the cylinder is fixedly connected to the column, and the piston rod is hinged to the buffer device; the first to third power gas generators are all arranged on the bottom wall of the cylinder barrel, and the inner wall of the cylinder barrel is provided with snap rings for preventing the cylinder piston from compressing the first to third power gas generators; the first to third power gas generators are used to ignite and release gas to push the piston rod of the cylinder according to the instructions of the second controller moving outward, and then pushing the buffer device upward;

As shown in Figure 4, the buffer device includes a housing, an airbag gas generator, an airbag webbing and a plastic sheet; the housing is a hollow cylinder with one end open and the other end closed; the plastic sheet is fixedly connected to the housing opening and cooperates with the housing to form a closed cavity; the airbag gas generator and the airbag webbing are all arranged in the cavity formed by the plastic sheet and the housing, and the airbag gas generator is used to release gas according to the instructions of the second controller to inflate the airbag webbing, so that the airbag webbing expands and breaks the plastic sheet; The closed end of the housing is respectively hinged to the beam and the adjustment column;

The signal receiver is used to receive the alarm signal sent by the signal transmitter, and transmit the received alarm signal to the second controller;

The second controller is electrically connected to the signal receiver, the first to the third power gas generators, and the air bag gas generator respectively, and is used to control the first to third power gas generators and the air bag gas generator to work according to the alarm signal received by the signal receiver.

The working range of the signal transmitter is 3-5 meters. When the first to third power gas generators are not working, the plane where the closed end of the buffer device housing is located is parallel to the axis of the column.

The ignition numbers of the first to third power gas generators can be one, two, or three, so that the piston has three levels of protruding lengths, so that the buffer device can be raised at three angles.

As shown in Figure 7, the present invention also discloses a control method of the vehicle rollover intelligent protection system, including the following steps:

Step 1), the level sensor and the gyroscope sensor respectively collect the body roll angle signal of the vehicle and transmit it to the first controller;

Step 2), the control module uses the Kalman filter to combine the information of the vehicle body roll angle collected by the gyro sensor and the level sensor to obtain the combined vehicle body roll angle, and judge whether the vehicle body rollover occurs through the combined vehicle body roll angle;

Step 3), if it is judged that the vehicle rolls over, the first controller controls the signal transmitter to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information;

Step 4), each protection unit within the working range of the signal generator receives the alarm signal and outputs it to its second controller. For each protection unit, as shown in Figure 5:

Step 4.1), if the vehicle size information is a small car, the second controller controls the ignition of the first power gas generator;

If the vehicle size information is a medium-sized car, the second controller controls the ignition of the first and second power gas generators;

If the vehicle size information is a large vehicle, the second controller controls the ignition of the first, second and third power gas generators;

Step 4.2), the piston of the cylinder slides, so that the piston rod of the cylinder pushes the buffer device to rotate around the end of the beam away from the column;

Step 4.3), the second controller controls the ignition of the gas generator of the airbag, and releases the gas to inflate the airbag webbing, so that the airbag webbing expands and breaks the plastic sheet, buffering the impact of the vehicle, as shown in Figure 6.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and unless defined as herein, are not to be interpreted in an idealized or overly formal sense.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A vehicle rollover intelligent protection system, characterized in that it comprises a judgment module and a protection module; The judging module is arranged on the vehicle and includes a level, a gyroscope, a storage unit, a first controller and a signal transmitter; The spirit level and the gyroscope are arranged at the center of mass of the vehicle, both of which are used to detect the vehicle body roll angle of the passenger car, and transmit the measured vehicle body tilt angle to the first controller; The signal transmitter is arranged at the axis of the front beam of the vehicle, and is used to send an alarm signal to the protection units within its working range; The storage unit is used to store the size information of the vehicle model, and the size information of the vehicle type is a small car, a medium-sized car or a large car; The first controller is electrically connected to the level meter, the gyroscope, the storage unit, and the signal transmitter respectively, and is used to judge whether the vehicle body rolls over according to the induction signals of the level sensor and the gyroscope sensor, and if rollover occurs, the signal transmitter is controlled to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information; The protection module includes a number of protection units arranged on the road where protection is required, and the protection unit includes a signal receiver, a second controller, a column, a brace, a beam, an adjustment column and a buffer device; The column is vertically fixed on the ground; the diagonal brace and the crossbeam are respectively arranged on both sides of the column, and the adjusting column and the crossbeam are located on the same side of the column, wherein one end of the diagonal brace is fixedly connected with the column, and the other end is fixedly connected with the ground, so that a right triangle is formed between the column, the diagonal brace and the ground, which is used to enhance the anti-destructive ability of the column; one end of the crossbeam is vertically connected with the column, and the other end is hinged with the buffer device; It is hinged with the buffer device, and the hinge of the adjustment post and the buffer device is higher than the joint between the adjustment post and the upright post; The regulating column includes a cylinder and first to third power gas generators; the cylinder adopts a single-acting cylinder, the cylinder of which is fixedly connected with the column, and the piston rod is hinged to the buffer device; the first to third power gas generators are all arranged on the bottom wall of the cylinder barrel, and the inner wall of the cylinder barrel is provided with a snap ring for preventing the cylinder piston from pressing the first to third power gas generators; the first to third power gas generators are used to ignite according to the instructions of the second controller, and release gas to push the piston rod of the cylinder to move outward , and then push the buffer device upward; The buffer device includes a housing, an airbag gas generator, an airbag webbing and a plastic sheet; the housing is a hollow cylinder with one end open and the other closed; the plastic sheet is fixedly connected to the opening of the casing and cooperates with the housing to form a closed cavity; the airbag gas generator and the airbag webbing are all arranged in the cavity formed by the plastic sheet and the housing, and the airbag gas generator is used to release gas to inflate the airbag webbing according to the instructions of the second controller, so that the airbag webbing expands and breaks the plastic sheet; The closed end is respectively hinged to the beam and the adjustment column; The signal receiver is used to receive the alarm signal sent by the signal transmitter, and transmit the received alarm signal to the second controller; The second controller is electrically connected to the signal receiver, the first to the third power gas generators, and the air bag gas generator respectively, and is used to control the first to third power gas generators and the air bag gas generator to work according to the alarm signal received by the signal receiver. 2. The vehicle rollover intelligent protection system according to claim 1, wherein the working range of the signal transmitter is 3-5 meters. 3 . The intelligent vehicle rollover protection system according to claim 1 , wherein when the first to third power gas generators are not working, the plane where the closed end of the buffer device housing is located is parallel to the axis of the column. 4 . 4. The control method based on the vehicle rollover intelligent protection system according to claim 1, characterized in that, comprising the following steps: Step 1), the level sensor and the gyroscope sensor respectively collect the body roll angle signal of the vehicle and transmit it to the first controller; Step 2), the control module uses the Kalman filter to combine the information of the vehicle body roll angle collected by the gyro sensor and the level sensor to obtain the combined vehicle body roll angle, and judge whether the vehicle body rollover occurs through the combined vehicle body roll angle; Step 3), if it is judged that the vehicle rolls over, the first controller controls the signal transmitter to emit an alarm signal, and the alarm signal includes vehicle size information and collision warning information; Step 4), each protection unit within the working range of the signal generator receives the alarm signal and outputs it to its second controller, for each protection unit: Step 4.1), if the vehicle size information is a small car, the second controller controls the ignition of the first power gas generator; If the vehicle size information is a medium-sized car, the second controller controls the ignition of the first and second power gas generators; If the vehicle size information is a large vehicle, the second controller controls the ignition of the first, second and third power gas generators; Step 4.2), the piston of the cylinder slides, so that the piston rod of the cylinder pushes the buffer device to rotate around the end of the beam away from the column; Step 4.3), the second controller controls the ignition of the gas generator of the airbag, and releases gas to inflate the webbing of the airbag, so that the webbing of the airbag expands and breaks the plastic sheet, buffering the impact of the vehicle.