CN111216666B - A vehicle rear-end collision protection system and protection control method - Google Patents

Abstract

The invention discloses a vehicle rear-end collision protection system, which comprises a protection unit, a distance monitoring unit and an inflating unit, wherein the protection unit comprises a support component arranged at the tail part of a vehicle and an inflating airbag arranged in the support component, the distance monitoring unit is used for monitoring the distance between the vehicle and a rear vehicle and comprises a radar camera and an ultrasonic transceiver arranged at the tail part of the vehicle, the distance monitoring unit monitors and confirms the relative distance between the rear vehicle and the monitored rear vehicle and sends the relative distance to a controller, the controller analyzes and judges the received image information and the distance information so as to drive the inflating assembly to inflate the inflating airbag, so that the inflating airbag is popped out from the support component and is positioned between the rear-end collision vehicle and the vehicle, the elastic resistance is provided between the rear-end collision vehicle and the vehicle, the rear vehicle is prevented from directly colliding with the running vehicle, the vehicle damage caused by the rear-end collision is effectively reduced, and the safety of a driver and passengers in the vehicle is improved.

Description

A vehicle rear-end collision protection system and protection control method

technical field

The invention relates to the technical field of safe driving, in particular to a vehicle rear-end collision protection system and a protection control method.

Background technique

At present, with the development of the times, more and more families have their own vehicles, and the subsequent traffic safety has become an increasingly serious problem. At present, most vehicles will be installed with sensors for monitoring the distance between the vehicle and the obstacle. When the monitored object is detected to be too small behind the vehicle, an alarm will sound to remind the owner to avoid colliding with the monitored object.

However, these existing systems are usually triggered when the vehicle is reversing. When the vehicle is running normally, it is impossible to remind the owner in time, or to remind the owner in time, but it cannot help the owner in the situation where the vehicle cannot be avoided in time. Under the implementation of active device assistance, help reduce the loss of people and vehicles.

Currently known vehicle rear-end collision prevention systems, several types have been proposed, mainly in the following categories:

1. The vehicle anti-collision system. The system includes a single-chip controller, an ultrasonic transceiver, a sound-activated alarm mechanism, a display mechanism, a braking device and a temperature sensor. The ultrasonic transceiver is used to send out ultrasonic waves and feed back the returned signal to the The single-chip controller; the temperature sensor is used to detect the current temperature value; the single-chip controller is used to calculate the distance between the vehicle and the obstacle, and when the distance is less than or equal to the specified distance threshold, the voice control The alarm mechanism sends an alarm command and sends a braking command to the braking device of the vehicle; the voice-activated alarm mechanism is used to receive the alarm command from the single-chip controller and send an alarm signal; the display mechanism is used to display the The distance sent by the single-chip controller, the current temperature inside and outside the car, and the current speed of the car. Although this method can remind the car owner to carry out early warning, it cannot help the car owner to implement active safety protection in a dangerous state.

2. An anti-collision system, comprising: a radar for detecting an object positioned at the rear of the vehicle and detecting a distance from the object; a plurality of ultrasonic sensors, each of which is used for detecting the object Detecting and detecting a distance from an object, a plurality of ultrasonic sensors respectively have different detection areas; an approaching object detection unit for detecting an approaching object among the objects, approaching the vehicle; a barrier estimating unit for estimating that there is an obstruction from behind an approaching barrier to the vehicle; and a control unit for performing driving assistance for avoiding a collision with the approaching object when the approaching object is detected, and when the distance from the approaching object is greater than a fixed value or greater than the distance from the barrier , it is used to restrict or prohibit the execution of driving assistance. This method can also perform driving assistance braking on the driving vehicle when the distance between the two vehicles is too small, but it does not consider that if the vehicle speed is too fast or the braking distance is too short, effective protection cannot be performed, and it cannot be used in such dangerous conditions. Reduce human and vehicle injuries.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and to briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, the abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

In view of the problems mentioned above and/or in the running of existing vehicles, the present invention is proposed.

Therefore, the object of the present invention is to provide a vehicle rear-end collision protection system and a protection control method, which can effectively reduce vehicle damage and improve the safety of the driver and passengers in the vehicle when the rear vehicle collides.

In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

A vehicle rear-end protection system, comprising:

The protective unit includes a support assembly arranged at the rear of the vehicle and an inflatable air bag arranged in the support assembly;

The distance monitoring unit is used to monitor the distance between the vehicle and the rear vehicle, which includes a radar camera and an ultrasonic transceiver arranged at the rear of the vehicle; and

The inflatable unit is arranged inside the vehicle, and includes a controller electrically connected to the distance monitoring unit, an inflatable component electrically connected to the controller, and a first inflatable pipeline arranged between the inflatable component and the inflatable airbag. an on-off element;

Wherein, when the distance between the vehicle and the vehicle behind is less than the first dangerous threshold set in the controller, the controller drives the first on-off element to open, and drives the inflatable component to the inflatable airbag Inflate the interior so that the inflatable air bag is ejected from the support assembly.

As a preferred solution of a vehicle rear-end protection system according to the present invention, wherein the support assembly includes a support tube symmetrically arranged on the side wall of the vehicle rear and an air bag arranged between the two support tubes seat;

The inflatable air bag is hidden in the air bag receiving seat, and the inflation pipeline between the inflatable air bag and the inflatable component is hidden in the support tube.

As a preferred solution of the vehicle rear-end collision protection system according to the present invention, the airbag receiving seat area is divided into a decorative panel that is clamped with the receiving seat body, and when the inflated airbag is released from the When the receiving seat is ejected, the decorative panel falls off from the receiving seat.

As a preferred solution of a vehicle rear-end collision protection system according to the present invention, the inflatable assembly includes an electronic inflator, a high-pressure gas storage device communicated with the electronic inflator through a pipeline, and a A second on-off element on the pipeline between the inflation device and the high-pressure gas storage device;

When the distance between the vehicle and the vehicle behind is less than the second dangerous threshold set in the controller, the controller drives the second on-off element to open, and drives the electronic inflator to charge the high-pressure gas Inflate the device.

As a preferred solution of the vehicle rear-end collision protection system according to the present invention, the first on-off element and the second on-off element are solenoid valves.

As a preferred solution of the vehicle rear-end collision protection system according to the present invention, the inflatable component further includes a gas release valve, which communicates with the high-pressure gas storage device through a pipeline for releasing the high-pressure gas storage gas in the device.

A vehicle rear-end collision protection control method, comprising:

The radar camera collects the image of the object behind the vehicle and transmits it to the controller. The ultrasonic transceiver collects the distance value between the vehicle and the object behind the vehicle and transmits it to the controller. The distance between the vehicle and the object behind the vehicle is The value is denoted as P;

The controller analyzes and confirms the image information transmitted by the radar camera, and compares the distance value transmitted by the ultrasonic transceiver with its built-in first danger threshold, wherein the first danger threshold set in the controller is marked as P ₁ ;

When the controller confirms that the image transmitted by the radar camera is a vehicle, and P≤P ₁ , the controller drives the first on-off element to open, and drives the inflatable component to inflate the inflatable airbag.

As a preferred solution of the vehicle rear-end collision protection control method according to the present invention, it also includes an inflation preparation step: setting a second dangerous threshold in the controller, denoted as P ₂ , when the controller confirms that The image transmitted by the radar camera is a vehicle, and when P≤P ₂ , the controller drives the second on-off element to open, and drives the electronic inflation device to inflate the high-pressure gas storage device, wherein P ₂ is greater than P ₁ .

As a preferred solution of the vehicle rear-end collision protection control method according to the present invention, it also includes the following steps: within 3 seconds after the electronic inflation device is filled with gas in the high-pressure gas storage device, and P> When P is ₁ , the controller drives the vent valve to open to discharge the gas in the high-pressure gas storage device.

Compared with the prior art, the present invention has the beneficial effects that: the distance monitoring unit monitors and confirms the relative distance of the vehicle behind and monitors the vehicle behind and sends it to the controller, and the controller analyzes and judges the received image information and distance information, and then Drive the inflatable component to inflate the inflatable airbag, so that the inflatable airbag pops out from the support component, and is located between the rear-collision vehicle and the vehicle, providing elastic resistance between the rear-end collision vehicle and the vehicle, and avoiding the rear vehicle from directly colliding with the vehicle. The vehicle directly collides, effectively reduces the vehicle damage caused by rear-end collision, and improves the safety of the driver and passengers in the vehicle.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and detailed embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings without paying creative labor. in:

Fig. 1 is a functional block diagram of a vehicle rear-end collision protection system of the present invention;

Fig. 2 is a schematic structural diagram of the protection unit in Fig. 1 of a vehicle rear-end collision protection system according to the present invention;

Fig. 3 is a schematic diagram of the first state of a specific application scene of a vehicle rear-end collision protection control method according to the present invention;

Fig. 4 is a schematic diagram of a second state of a scene of a specific application of a vehicle rear-end collision protection control method according to the present invention;

5 is a flow chart of an embodiment of a vehicle rear-end collision protection control method according to the present invention;

Fig. 6 is a flow chart of another preferred embodiment of a vehicle rear-end collision prevention control method according to the present invention.

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. Similarly generalized, the present invention is therefore not limited by the specific embodiments disclosed below.

Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the implementation of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

The invention provides a vehicle rear-end collision protection system and a protection control method, which can effectively reduce vehicle damage and improve the safety of the driver and passengers in the vehicle when the rear vehicle collides with the rear.

In order to make the purpose, technical solution and advantages of the vehicle rear-end collision protection system and the protection control method of the present invention more clear, the implementation of the vehicle rear-end collision protection system and the vehicle rear-end collision protection control method of the present invention will be described below in conjunction with the accompanying drawings Give a full and detailed description.

What Fig. 1 shows is the functional block diagram of an embodiment of a vehicle rear-end collision protection system according to the present invention, please refer to Fig. and an inflatable unit 300 .

The protection unit 100 is used to be installed at the rear of the vehicle. When the rear vehicle hits its rear, an elastic barrier can be formed at the rear of the vehicle and the front end of the rear vehicle to remove the impact force of a part of the rear vehicle and reduce the impact force of the rear vehicle. In particular, the protection unit 100 includes a support assembly 110 and an inflatable airbag 120, the inflatable airbag 120 is arranged in the support assembly 110, and the driving distance in the rear is less than that in the inflatable unit 300 When the first dangerous threshold is set, the inflatable unit 300 will drive the inflatable air bag 120 in the protective unit 100 to pop out from the support assembly 110, and block between the vehicle and the vehicle behind. Please refer to FIG. 2 together. In this embodiment Among them, the support assembly 110 includes a support tube 110a symmetrically arranged on the rear side wall of the vehicle and an airbag seat 110b arranged between the two support tubes 110a, the inflatable airbag 120 is hidden in the airbag seat 110b, and the inflatable airbag 120 and the inflatable The inflatable pipeline connected between the inflatable components 320 of the unit 300 is hidden in the support tube 110a, so that the support tube 110a can protect the inflatable pipeline, and effectively plan the inflatable pipeline to avoid messy placement of the inflatable pipeline and improve The overall cleanliness of the vehicle rear-end protection system, and as a preference, the airbag seat 110b is divided into a seat body 110b-1 and a decorative panel 110b-2 that is snapped together with the seat body 110b-1. When the body 110b-1 is ejected, the decorative panel 110b-2 falls off from the receiving seat body 110b-1.

The distance monitoring unit 200 is used to monitor the approaching object at the rear of the vehicle and the distance between the vehicle and the rear approaching object. Specifically, the distance monitoring unit 200 includes a radar camera 210 and an ultrasonic transceiver 220 arranged at the rear of the vehicle. The radar camera 210 collects the image of the approaching object in the rear, and sends it to the controller 310 on the inflatable unit 300, so that the controller 310 to be charged confirms that the approaching object in the rear is a vehicle and the distance between the vehicle and the approaching object in the rear is less than the distance set by the controller 310 first danger threshold.

The inflation unit 300, as a control execution unit, is arranged inside the vehicle, and is used to receive the image and distance information transmitted by the distance monitoring unit 200, analyze and calculate the image and distance information, and inflate the inflatable airbag 120 in the protection unit 100. Including a controller 310 electrically connected to the distance monitoring unit 200, an inflatable component 320 electrically connected to the controller 310, and a first on-off element 330 arranged on the inflation pipeline between the inflatable component 320 and the inflatable air bag 120, when the controller When 310 analyzes the image and confirms that the rear approaching object is a vehicle, and the distance between the rear vehicle and the vehicle is less than the first danger threshold set in the controller 310, the controller 310 drives the first on-off element 330 to open, and Drive the inflatable assembly 320 to inflate the inflatable airbag 120, so that the inflatable airbag 120 pops out from the support assembly 110, forming an elastic barrier at the rear of the vehicle and the front end of the vehicle behind. In this embodiment, the controller 310 also sets the second dangerous threshold. The inflatable assembly 320 can be composed of an electronic inflator 320a, a high-pressure gas storage device 320b and a second on-off element 320c. The high-pressure gas storage device 320b communicates with the electronic inflator 320a through a pipeline, and the second The on-off element 320c is arranged on the pipeline between the electronic inflator 320a and the high-pressure gas storage device 320b, so as to make the electronic inflator 320a communicate with the high-pressure gas storage device 320b or block the communication between the electronic inflator 320a and the high-pressure gas storage device 320b, When the distance between the rear of the vehicle and the front of the vehicle behind is less than the second dangerous threshold set in the controller 310, the controller 310 drives the second on-off element 320c to open, and drives the electronic inflator 320a to the high-pressure gas storage device 320b Inner inflation, as a preference, in this embodiment, the first on-off element 330 and the second on-off element 320c use solenoid valves.

The operation steps of the above-mentioned vehicle rear-end collision protection system in specific use will be described in detail in the following vehicle rear-end collision protection control method.

Fig. 3 and Fig. 4 respectively show two state schematic diagrams of a specific application scene of a vehicle rear-end collision protection control method according to the present invention. It should be noted here that the vehicle shown in Fig. 3 and Fig. 4 refers to Driving a moving or stationary vehicle, vehicle 2 refers to a vehicle that is driving at the rear of vehicle 1 and gradually approaches vehicle 1. In the process described below, vehicle 1 and vehicle 2 are used for alternative descriptions.

FIG. 5 shows a flow chart of each step of an embodiment of a vehicle rear-end collision protection control method according to the present invention. The vehicle rear-end collision protection control method will be described in detail below in conjunction with FIGS. 3-5 .

Step 401: The radar camera 210 collects the image of an object behind the vehicle and transmits it to the controller 310, and the ultrasonic transceiver 220 collects the distance between the rear end of the vehicle and the object behind the vehicle and transmits it to the controller 310, wherein the The distance between vehicle one and the object behind the vehicle is denoted as P.

Step 402: The controller 310 analyzes and confirms the image information transmitted by the radar camera 210, and compares the distance value transmitted by the ultrasonic transceiver 220 with its built-in first dangerous threshold value, wherein the built-in first dangerous threshold value of the controller 310 marks is P ₁ , since the radar camera 210 collects images when the approaching object behind the vehicle one approaches the vehicle one, the controller 310 needs to confirm whether the approaching object behind is a driving vehicle, that is, the controller 310 needs to confirm that the radar camera 210 transmits Check whether the image is vehicle 2 approaching vehicle 1, and check whether P is less than or equal to P ₁ .

Step 403: When the controller 310 confirms that the image transmitted by the radar camera 210 is vehicle two, and P≤P ₁ , the controller 310 drives the first on-off element 330 to open, and drives the inflatable component 320 to inflate the inflatable airbag 120 to inflate the airbag 120. The airbag 120 is deployed and ejected from the support assembly 110 to form a barrier at the rear of the vehicle one and the front end of the vehicle two.

Fig. 6 shows a flow chart of steps of another preferred embodiment of a vehicle rear-end collision protection control method according to the present invention. In combination with Fig. 5 and Fig. 6, there is also a step H between step 402 and step 403 of the above embodiment: A second dangerous threshold is set in the controller 310, _denoted as P2. When the controller 310 confirms that the image transmitted by the radar camera 210 is a vehicle, and _P≤P2 , the controller 310 drives the second on-off element 320c to open, and Drive the electronic inflator 320a to inflate the high-pressure gas storage device 320b, wherein P ₂ is greater than P ₁ , because in the above-mentioned embodiment, the value of P ₁ set in the controller 310 is very small, if the vehicle speed of the vehicle two rear-end colliding Too fast, during the period when the distance P between the second vehicle and the _first vehicle reaches P1 to the rear-end collision between the second vehicle and the first vehicle, the inflatable airbag 120 is continuously inflated through the inflatable component 320, and the time may be too late. That is, the inflatable airbag 120 is not filled with air. For this reason, an inflatable assembly 320 composed of an electronic inflator 320a, a high-pressure gas storage device 320b and a second on-off element 320c can be set. When the controller 310 confirms that the image transmitted by the radar camera 210 is vehicle, and when P≤P ₂ , the controller 310 drives the second on-off element 320c to open, and drives the electronic inflator 320a to inflate the high-pressure gas storage device 320b; when P≤P ₁ , the controller 310 drives the first switch The break element 330 is opened, so that the gas of the high-pressure gas storage device 320b quickly enters the inflatable air bag 120. In this embodiment, as preferably, within 3 seconds after the electronic inflator 320a fills the high-pressure gas storage device 320b with gas, And when P>P ₁ , the controller 310 drives the gas release valve 320d to open to discharge the gas in the high-pressure gas storage device 320b, so as to avoid the danger caused by long-term storage of gas in the high-pressure gas storage device 320b.

In the vehicle rear-end collision protection system and protection control method of the present invention, the distance monitoring unit 200 monitors and confirms the relative distance of the rear vehicle and monitors the rear vehicle and sends it to the controller 310, and the received image information and distance information are analyzed by the controller 310 judge, and then drive the inflatable assembly 320 to inflate the inflatable airbag 120, so that the inflatable airbag 120 pops out from the support assembly 110, and is located between the rear-collision vehicle and the vehicle, providing elastic resistance between the rear-end collision vehicle and the vehicle, avoiding The direct collision of the rear vehicle to the direct collision of the driving vehicle effectively reduces the vehicle damage caused by the rear-end collision, and improves the safety of the driver and passengers in the vehicle.

While the invention has been described above with reference to the embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be used in combination with each other in any way, and the description of these combinations is not exhaustive in this specification only to show In consideration of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (7)

1. A vehicle rear-end protection system, characterized in that, comprising: A protection unit (100), comprising a support assembly (110) arranged at the rear of the vehicle and an inflatable airbag (120) arranged in the support assembly (110); A distance monitoring unit (200), which is used to monitor the distance between the rear of the vehicle and the front end of the rear vehicle, which includes a radar camera (210) and an ultrasonic transceiver (220) arranged at the rear of the vehicle; and Inflatable unit (300), arranged inside the vehicle, which includes a controller (310) electrically connected to the distance monitoring unit (200), an inflatable component (320) electrically connected to the controller (310) and arranged in The first on-off element (330) on the inflation pipeline between the inflation assembly (320) and the inflation air bag (120); Wherein, when the distance between the rear of the vehicle and the front end of the vehicle behind is less than the first danger threshold set in the controller (310), the controller (310) drives the first on-off element (330) opening, and driving the inflatable assembly (320) to inflate the inflatable airbag (120), so that the inflatable airbag (120) is ejected from the support assembly (110); Wherein, the inflatable assembly (320) includes an electronic inflatable device (320a), a high-pressure gas storage device (320b) communicated with the electronic inflatable device (320a) through pipelines, and a A second on-off element (320c) on the pipeline between the high-pressure gas storage devices (320b); When the distance between the rear of the vehicle and the front of the vehicle behind is less than the second danger threshold set in the controller (310), the controller (310) drives the second on-off element (320c) to open, And drive the electronic inflation device (320a) to inflate the high-pressure gas storage device (320b). 2. A vehicle rear-end protection system according to claim 1, characterized in that, the support assembly (110) comprises a support tube (110a) symmetrically arranged on the rear side wall of the vehicle and arranged on two The airbag receiving seat (110b) between the support tubes (110a); The inflatable air bag (120) is hidden in the air bag receiving seat (110b), and the inflation pipeline between the inflatable air bag (120) and the inflatable component (320) is hidden in the support tube (110a) Inside. 3. A vehicle rear-end collision protection system according to claim 2, characterized in that, the airbag receiving seat (110b) is divided into a receiving seat body (110b-1) and a receiving seat body (110b-1) clip The decorative panel (110b-2) is arranged next to it. When the inflatable air bag (120) pops out from the receiving seat (110b-1), the decorative panel (110b-2) is released from the receiving seat (110b-1). 110b-1) comes off. 4. The vehicle rear-end collision protection system according to claim 1, characterized in that, the first on-off element (330) and the second on-off element (320c) are solenoid valves. 5. A vehicle rear-end collision protection system according to claim 1, characterized in that, the inflatable assembly (320) further comprises a gas release valve (320d), which communicates with the high-pressure gas storage device (320b) through a pipeline, It is used to release the gas in the high-pressure gas storage device (320b). 6. A vehicle rear-end collision protection control method for a vehicle rear-end collision protection system according to claim 1, characterized in that it comprises: The radar camera (210) collects the image of the object behind the vehicle and transmits it to the controller (310), and the ultrasonic transceiver (220) collects the distance between the rear end of the vehicle and the object behind the vehicle and transmits it to the controller (310). , where the distance between the vehicle and the object behind the vehicle is denoted as P; The controller (310) analyzes and confirms the image information transmitted by the radar camera (210), and compares the distance value transmitted by the ultrasonic transceiver (220) with its built-in first danger threshold, wherein the built-in value of the controller (310) The first danger threshold is denoted as P ₁ ; When the controller (310) confirms that the image transmitted by the radar camera (210) is a vehicle, and P≤P ₁ , the controller (310) drives the first on-off element (330) to open, and drives the inflatable assembly (320) to inflate The air bag (120) is inflated; It also includes an inflation preparation step: setting a second dangerous threshold in the controller (310), denoted as P ₂ , when the controller (310) confirms that the image transmitted by the radar camera (210) is a vehicle, and P≤P At ₂ o'clock, the controller (310) drives the second on-off element (320c) to open, and drives the electronic inflator (320a) to inflate the high-pressure gas storage device (320b), wherein P ₂ is greater than P ₁ . 7. A vehicle rear-end collision protection control method according to claim 6, characterized in that it further comprises the following step: after the electronic inflation device (320a) fills the high-pressure gas storage device (320b) with gas, Within 3s, and when P>P ₁ , the controller (310) drives the release valve (320d) to open to discharge the gas in the high-pressure gas storage device (320b).

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