CN107640114A - A kind of vehicle intelligent collision auxiliary endergonic structure and its application method - Google Patents

Abstract

The invention discloses an intelligent collision auxiliary energy-absorbing structure for a vehicle, which includes a radar, a processor, a damper and an energy-absorbing box arranged on the vehicle body. The radar is used to measure the distance between the barrier and the damper through the A connection plate is connected with the energy-absorbing box, the damper, the connection plate and the energy-absorbing box form an energy-absorbing structure, and the radar and the damper are respectively controlled and connected with the processor. The usage method of the intelligent collision auxiliary energy-absorbing structure. The invention can change the regional stiffness of the energy-absorbing structure according to the changing collision acceleration, so as to adapt to the change of the acceleration waveform, absorb energy to a greater extent, reduce the acceleration of the vehicle body, and further reduce the risk of occupant injury.

Description

An intelligent collision auxiliary energy-absorbing structure for a vehicle and its application method

technical field

The invention relates to the field of production and manufacture of vehicles and parts thereof, and more specifically relates to an intelligent collision auxiliary energy-absorbing structure for vehicles and a method for using the same.

Background technique

At present, there are many researches on the passive safety of passenger cars at home and abroad, mainly including front collision, side collision, offset collision, rear-end collision and pedestrian collision protection, and various regulations have been formulated, but the research on passenger cars mainly focuses on In terms of anti-rollover ability and roof strength of passenger cars, there are relatively few studies on frontal crashes of passenger cars. In the event of a frontal collision, unlike a passenger car, a passenger car can absorb the collision energy through the deformation of the bumper and the engine compartment to reduce occupant injuries. The passenger car mainly relies on the deformation of the front wall to absorb the collision energy, because the front wall is very close to the driver's seat and the guide chair. In the event of a frontal collision, it is easy to cause serious extrusion and deformation to the driving area, encroach on the driving space, and pose a major threat to the life safety of the driver and tour guide.

The Chinese patent authorization announcement number is: CN 102398559B discloses a passenger car frontal collision collapse mechanism, which is an invention patent applied by the applicant on November 18, 2011. Energy box, energy-absorbing box guide plate, connection seat, frame longitudinal beam and anti-collision support beam. An energy-absorbing box and an energy-absorbing box guide plate are set between the anti-collision beam and the connection seat. At the same time, the anti-collision beam There is a longitudinal beam reinforcement box on the top. Through this reasonable structural layout and optimization of material thickness, the collapse mechanism can be gradually deformed to absorb collision energy in the event of a frontal collision of a bus, reducing the amount of intrusion into the driving area and making the body frame structure stressed. It is more reasonable, reduces the risk of injury to drivers and tour guides, and improves the passive safety of the vehicle.

However, after a large number of experimental tests and actual production and use, it was found that this technical solution still has great limitations in use. This technical solution can only optimize the position and structure of the energy-absorbing box to achieve the effect of anti-collision and shock absorption, and adapt to collisions. Acceleration waveform, energy absorption effect is limited, a large number of tests and accident statistics found that in 100% frontal collision of the car body, the energy absorbing box cannot change the stiffness in real time with the change of acceleration, resulting in excessive acceleration of the car body, resulting in excessive occupant damage indicators , a serious threat to the personal safety of the occupants. Therefore, designing an energy-absorbing box that can change the stiffness in real time as the acceleration changes can solve the problem that the vehicle body acceleration is too high and the occupant damage index is too large.

Contents of the invention

The invention discloses an intelligent collision auxiliary energy-absorbing structure for vehicles and a method for using the same. The main purpose of the invention is to overcome the above-mentioned deficiencies and shortcomings in the prior art.

The technical scheme that the present invention adopts is as follows:

An intelligent collision auxiliary energy-absorbing structure for a vehicle, comprising a radar, a processor, a damper and an energy-absorbing box arranged on the vehicle body, the radar is used to measure the distance from a barrier, and the damper is connected through a The board is connected with the energy-absorbing box, the damper, the connecting plate and the energy-absorbing box form an energy-absorbing structure, and the radar and the damper are respectively controlled and connected to the processor, which is used for receiving, The signal data of the radar is processed and the movement variation of the damper is controlled.

Furthermore, the processor receives the distance signal collected by the radar and the acceleration of the vehicle body at the time of collision, and obtains the change curve data of the collision acceleration, and then compares and judges it with the optimized acceleration change curve data preset in the processor, and outputs The control signal makes the damper change its moving speed in real time with a certain variable acceleration.

Furthermore, the damper is any one of a liquid damper, a gas damper or an electromagnetic damper.

Furthermore, a guided telescopic energy-absorbing structure is respectively provided on the two side walls of the energy-absorbing box.

A method of using an intelligent collision auxiliary energy-absorbing structure for a vehicle, the method of using includes the following specific steps,

Step 1: The vehicle-mounted radar measures the distance from the barrier and the acceleration of the vehicle body during collision, and transmits the measurement data information to the vehicle-mounted processor from time to time;

Step 2: The processor receives the radar measurement data information, and then compares the collision acceleration data with the optimized acceleration curve data preset by the processor, and generates a control signal for driving the damper according to the comparison result;

Step 3: The damper moves according to the control signal of the processor, and changes its motion speed in real time as the acceleration changes, so that the energy-absorbing structure composed of the damper, connecting plate and energy-absorbing box can change its speed in real time as the acceleration changes. Stiffness to absorb collision energy.

Furthermore, in the step 2, the processor compares the change curve data of the collision acceleration with the change curve data of the optimized acceleration, and when the collision acceleration is greater than the optimized acceleration, the processor outputs a control signal for increasing the speed output of the damper ; When the collision acceleration is less than the optimal acceleration, the processor outputs a control signal for reducing the speed output of the damper.

Furthermore, the damper is any one of a liquid damper, a gas damper or an electromagnetic damper.

By the above description of the present invention, it can be known that compared with the prior art, the present invention has the following advantages:

In the present invention, radar, processor, damper, connecting plate and energy absorbing box are arranged, and the energy absorbing structure composed of damper, connecting plate and energy absorbing box can change the regional stiffness of the energy absorbing structure in response to the changing collision acceleration, thereby Adapt to the waveform change of acceleration, absorb energy to a greater extent, reduce the acceleration of the car body, and reduce the risk of occupant injury. The present invention changes the inherent design pattern of increasing the energy-absorbing effect by changing the position and structural design of the energy-absorbing box in the prior art, and changes the stiffness and deformation of the energy-absorbing mechanism in a dynamic and real-time changing manner, so as to achieve sufficient absorption It can reduce the acceleration of the body, better protect the occupants and reduce damage.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

detailed description

The specific implementation manners of the present invention will be further described below with reference to the accompanying drawings.

As shown in Figure 1, an intelligent collision auxiliary energy-absorbing structure for a vehicle includes a radar 1, a processor 2, a damper 3, and an energy-absorbing box 4 arranged on the vehicle body. The distance between, the damper 3 is connected with the energy-absorbing box 4 through a connecting plate 5, the damper 3, the connecting plate 5 and the energy-absorbing box 4 constitute an energy-absorbing structure, the radar 1, the damping The damper 3 is respectively set in control connection with the processor 2, and the processor 2 is used for receiving and processing the signal data of the radar, and controlling the movement change of the damper 3.

Furthermore, the processor 2 receives the distance signal collected by the radar and the acceleration of the vehicle body at the time of the collision, obtains the change curve data of the collision acceleration, and then compares and judges it with the optimized acceleration change curve data preset in the processor, and outputs The control signal enables the damper 3 to change its motion speed in real time with a certain variable acceleration, so as to match the preset acceleration curve, so that the entire energy-absorbing structure achieves a better energy-absorbing effect with a certain variable stiffness.

Furthermore, the damper 3 is any one of a liquid damper, a gas damper or an electromagnetic damper.

Furthermore, a guided telescopic energy-absorbing structure 41 is respectively provided on the two side walls of the energy-absorbing box 4 .

A method of using an intelligent collision auxiliary energy-absorbing structure for a vehicle, the method of using includes the following specific steps,

Step 1: The vehicle-mounted radar measures the distance from the barrier and the acceleration of the vehicle body at the time of collision, and transmits the measurement data information to the vehicle-mounted processor from time to time;

Step 2: The processor receives the radar measurement data information, obtains the measured distance (before the collision) and the vehicle body acceleration data at the time of the collision, and then compares the collision acceleration data with the optimized acceleration curve data preset by the processor, and according to the comparison The result is a control signal that drives the movement of the damper;

Step 3: The damper moves according to the control signal of the processor, and changes its motion speed in real time as the acceleration changes, so that the energy-absorbing structure composed of the damper, connecting plate and energy-absorbing box can change its speed in real time as the acceleration changes. Stiffness to absorb collision energy.

Furthermore, in the step 2, the processor compares the change curve data of the collision acceleration with the change curve data of the optimized acceleration, and when the collision acceleration is greater than the optimized acceleration, the processor outputs a control signal for increasing the speed output of the damper ; When the collision acceleration is less than the optimal acceleration, the processor outputs a control signal for reducing the speed output of the damper.

Furthermore, the damper is any one of a liquid damper, a gas damper or an electromagnetic damper.

In the present invention, radar, processor, damper, connecting plate and energy absorbing box are arranged, and the energy absorbing structure composed of damper, connecting plate and energy absorbing box can change the regional stiffness of the energy absorbing structure in response to the changing collision acceleration, thereby Adapt to the waveform change of acceleration, absorb energy to a greater extent, reduce the acceleration of the car body, and reduce the risk of occupant injury. The present invention changes the inherent design pattern of increasing the energy-absorbing effect by changing the position and structural design of the energy-absorbing box in the prior art, and changes the stiffness and deformation of the energy-absorbing mechanism in a dynamic and real-time changing manner, so as to achieve sufficient absorption It can reduce the acceleration of the body, better protect the occupants and reduce damage.

The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial improvement of the present invention using this concept should be an act of violating the protection scope of the present invention.

Claims (7)

1. A vehicle intelligent collision auxiliary energy-absorbing structure is characterized in that: comprising a radar, a processor, a damper and an energy-absorbing box arranged on the vehicle body, the radar is used to measure the distance between the barrier, so The damper is connected to the energy-absorbing box through a connection plate, the damper, the connection plate and the energy-absorbing box form an energy-absorbing structure, and the radar and the damper are respectively controlled and connected to the processor, The processor is used for receiving and processing the signal data of the radar, and controlling the motion change of the damper. 2. A vehicle intelligent collision auxiliary energy-absorbing structure according to claim 1, characterized in that: the processor receives the distance signal collected by the radar and the acceleration of the vehicle body during the collision, and obtains the change curve data of the collision acceleration , and then compare and judge with the optimized acceleration change curve data preset in the processor, and output a control signal to make the damper change its moving speed at a certain variable acceleration in real time. 3 . The vehicle intelligent collision auxiliary energy-absorbing structure according to claim 1 , wherein the damper is any one of a liquid damper, a gas damper or an electromagnetic damper. 4 . 4 . The vehicle intelligent collision auxiliary energy-absorbing structure according to claim 1 , characterized in that: the two side walls of the energy-absorbing box are respectively provided with a guided telescopic energy-absorbing structure. 5. A method for using an intelligent collision auxiliary energy-absorbing structure for a vehicle, characterized in that: the method for using includes the following specific steps, Step 1: The vehicle-mounted radar measures the distance from the barrier and the acceleration of the vehicle body during collision, and transmits the measurement data information to the vehicle-mounted processor from time to time; Step 2: The processor receives the radar measurement data information, and then compares the collision acceleration data with the optimized acceleration curve data preset by the processor, and generates a control signal for driving the damper according to the comparison result; Step 3: The damper moves according to the control signal of the processor, and changes its motion speed in real time as the acceleration changes, so that the energy-absorbing structure composed of the damper, connecting plate and energy-absorbing box can change its speed in real time as the acceleration changes. Stiffness to absorb collision energy. 6. The method for using an intelligent collision auxiliary energy-absorbing structure for a vehicle according to claim 5, characterized in that: in the step 2, the processor compares the change curve data of the collision acceleration with the change curve data of the optimized acceleration Processing, when the collision acceleration is greater than the optimal acceleration, the processor outputs a control signal to increase the speed output of the damper; when the collision acceleration is less than the optimal acceleration, the processor outputs a control signal to decrease the speed output of the damper. 7. The method of using an intelligent collision auxiliary energy-absorbing structure for a vehicle according to claim 5, wherein the damper is any one of a liquid damper, a gas damper or an electromagnetic damper.