Automobile obstacle crossing test device

Abstract

The utility model discloses an automobile obstacle crossing test device, which comprises beam obstacles arranged in front of a test vehicle and acceleration sensors arranged on the test vehicle, a plurality of acceleration sensors are arranged, the beam obstacles are arranged in at least one row, and at least two beam obstacles are arranged in one row. The automobile obstacle crossing test device can simulate the test process that an automobile passes through a cross beam obstacle, so that a basis can be provided for judging whether ignition parameters of an air bag need to be revised or not.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and specifically relates to an automobile obstacle crossing test device. Background Art

[0002] At present, cars often drive on bad roads, such as wood and stones falling on the road. Although such roads have little impact on drivers and passengers, they will cause the airbags in the car to deploy, bringing unnecessary trouble and risks to the drivers and passengers.

[0003] Therefore, it is necessary to collect and verify the airbag related parameters through experiments, so as to provide a basis for whether the airbag ignition parameters need to be corrected. The prior art lacks corresponding test equipment.

[0004] For example, the patent document with publication number CN106904217A discloses a front collision protection device for passenger cars, including a mounting bracket assembly, an outer cylinder assembly, an inner cylinder embedded in the outer cylinder assembly and coaxially arranged with the outer cylinder assembly, a guide rod, a guide seat assembly arranged in the outer cylinder assembly and the left end of the inner cylinder, a piston assembly embedded in the inner cylinder, and a base assembly arranged on the inner side of the right end of the outer cylinder assembly and the right end of the inner cylinder; the left end of the guide rod is connected to the mounting bracket assembly, and the right end passes through the guide seat assembly and the piston assembly in turn and is locked with a locking nut. The technical solution disclosed in the patent document also cannot solve the technical problems described above. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a vehicle obstacle test device, the purpose of which is to realize the vehicle obstacle test and provide a basis for whether the airbag ignition parameters need to be re-corrected.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a vehicle obstacle crossing test device, including a crossbeam obstacle arranged in front of a test vehicle and an acceleration sensor arranged on the test vehicle, a plurality of acceleration sensors are arranged, and the crossbeam obstacles are arranged in at least one row, and at least two crossbeam obstacles are arranged in one row.

[0007] Two crossbeam obstacles are provided.

[0008] The crossbeam obstacle comprises a crossbeam body, and the crossbeam body is arranged horizontally.

[0009] The crossbeam body is made of wood material.

[0010] The beam obstacle also includes a fixing seat connected to the beam body, a plurality of fixing seats are provided and all the fixing seats are distributed on both sides of the beam body.

[0011] The acceleration sensor includes a first sensor and a second sensor disposed at the front portion of the test vehicle, and a third sensor disposed at the B-pillar portion of the test vehicle.

[0012] The automobile obstacle crossing test device of the utility model can simulate the test process of the automobile passing through the crossbeam obstacle, thereby providing a basis for whether it is necessary to re-correct the airbag ignition parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model automobile obstacle crossing test device;

[0014] Figure 2 It is a schematic diagram of the structure of the beam obstacle;

[0015] Figure 3 is a schematic diagram of the acceleration sensor arrangement;

[0016] Figure 4 It is a schematic diagram of a front collision;

[0017] The marks in the above figures are: 1. first sensor; 2. second sensor; 3. third sensor; 4. airbag controller; 5. crossbeam body; 6. fixing seat; 7. test vehicle; 8. camera; 9. traction mechanism; 10. barrier. DETAILED DESCRIPTION

[0018] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0019] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower" and similar expressions used in this article are for illustrative purposes only.

[0020] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figures 1 to 4 As shown, the utility model provides a vehicle obstacle crossing test device, including a crossbeam obstacle arranged in front of a test vehicle and an acceleration sensor arranged on the test vehicle, a plurality of acceleration sensors are arranged, and the crossbeam obstacles are arranged in at least one row, and at least two crossbeam obstacles are arranged in one row.

[0023] Specifically, if Figure 1 As shown in FIG. 1 , two crossbar obstacles are provided, and all crossbar obstacles in the same row are located on the same straight line perpendicular to the path of the test vehicle, that is, the crossbar obstacles are placed horizontally on the path of the test vehicle. Figure 2 As shown, the crossbeam obstacle includes a crossbeam body 5, which is horizontally arranged, and the length direction of the crossbeam body 5 is perpendicular to the travel path of the test vehicle.

[0024] Preferably, the crossbeam body 5 is made of wood material, the length of the crossbeam body 5 is 1000 mm, the width of the crossbeam body 5 is 80-120 mm, and the height of the crossbeam body 5 is 80-120 mm.

[0025] like Figure 2 As shown, the beam obstacle also includes a fixing seat 6 connected to the beam body 5. A plurality of fixing seats 6 are provided and all fixing seats 6 are distributed on opposite sides of the beam body 5. The fixing seats 6 are installed on the test site, and the beam body 5 protrudes above the ground.

[0026] like Figure 3 As shown, the acceleration sensor includes a first sensor 1 and a second sensor 2 arranged at the front part of the test vehicle and a third sensor 3 arranged at the B-pillar part of the test vehicle. When performing a front collision test, the front part of the test vehicle hits the bicycle simulation mechanism 11. The first sensor 1 and the second sensor 2 are located on the same straight line parallel to the width direction of the test vehicle. Two third sensors 3 are provided, and the two third sensors 3 are respectively located at the two B-pillar parts of the test vehicle. During the test, the first sensor 1, the second sensor 2 and the third sensor 3 collect acceleration data. The first sensor 1, the second sensor 2 and the third sensor 3 are three-axial acceleration sensors.

[0027] The test method is as follows:

[0028] 1.1 Vehicle preparation:

[0029] 1.1.1 The test vehicle should reflect the characteristics of the product series, include all equipment installed normally, and be in a state of normal operation;

[0030] 1.1.2 Before the test, ensure that the transmission system, suspension system (including tires), steering and braking systems of the test vehicle are in the state specified by the vehicle manufacturer, and the vehicle engine is in the starting state or the ignition switch is in the "ON" position;

[0031] 1.1.3 The mass of the test vehicle should be the driving mass.

[0032] 1.2 Test method for simulating a car passing through a wooden beam obstacle

[0033] 1.2.1 Test site

[0034] The test site should be large enough to accommodate the runway, barriers and technical facilities necessary for the test.

[0035] 1.2.2 Test apparatus - wooden beam obstacle

[0036] The wooden beam barrier is made of wood that is 1000mm long, 80mm wide and 80mm high (for passenger cars with a curb weight of less than 1500kg) or 1000mm long, 120mm wide and 120mm high (for passenger cars with a curb weight of more than 1500kg).

[0037] 1.2.3 Test speed

[0038] The instantaneous speed of the car passing through the wooden beam obstacle is 800+1km / h.

[0039] 1.2.4 Sensor layout

[0040] 1.2.4.1 A triaxial acceleration sensor is attached below each of the left and right B-pillars (other position sensors are defined according to the calibration scheme of each vehicle model). Figure 3 A commonly used arrangement of external acceleration sensors is given.

[0041] 1.2.4.2 The sensor should be rigidly fixed so that its recording is affected as little as possible by vibration. In particular, the acceleration sensor should be installed to ensure that the deviation angle of the actual measurement axis relative to the reference axis is no more than 5°.

[0042] 1.3 Experimental steps

[0043] The car engine is started or the ignition switch is in the "ON" position. Prepare the crossbeam obstacle according to 1.2.2, and then make the car impact the gravel pile at the test speed in 1.2.3. The data collector ensures that the data acquisition device can collect the acceleration and force signals of the sensors arranged during the entire test process from the beginning to the end of the test.

[0044] 1.4 Vehicle Drive

[0045] 1.4.1 The vehicle should not be driven by its own power.

[0046] 1.4.2 At the moment of passing the crossbar obstacle, the vehicle should no longer be subject to the influence of any additional steering or driving device.

[0047] 1.4.3 The vehicle’s state should not change during the entire driving process.

[0048] 1.5 High-speed photography and layout

[0049] 1.5.1 The shooting frequency of high-speed cameras is greater than 1000 frames per second;

[0050] 1.5.2 The locations of high-speed cameras are shown in Table 1.

[0051] Table 1

[0052] Camera No. Camera speed Shooting location Shooting Target 1 1000fps Barrier to the left side of the vehicle Overall movement process of the left side of the vehicle 2 1000fps Barrier to the right side of the vehicle Overall movement process of the right side of the vehicle

[0053] 1.3 Collection test: Analyze the signals obtained at specific locations (such as acceleration, force, etc.) to determine the validity of the data.

[0054] 1.4 Verification test: Check the display of the vehicle instrument airbag status indicator light.

[0055] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. Automobile obstacle test device, characterized by: The invention comprises a crossbeam obstacle arranged in front of a test vehicle and an acceleration sensor arranged on the test vehicle, wherein a plurality of acceleration sensors are arranged, and the crossbeam obstacles are arranged in at least one row, and at least two crossbeam obstacles are arranged in one row.

2. The vehicle obstacle test device according to claim 1, characterized in that: Two crossbeam obstacles are provided.

3. The vehicle obstacle test device according to claim 1, characterized in that: The crossbeam obstacle comprises a crossbeam body, and the crossbeam body is arranged horizontally.

4. The vehicle obstacle test device according to claim 3, characterized in that: The crossbeam body is made of wood material.

5. The vehicle obstacle crossing test device according to claim 3, characterized in that: The beam obstacle also includes a fixing seat connected to the beam body, a plurality of fixing seats are provided and all the fixing seats are distributed on both sides of the beam body.

6. The vehicle obstacle test device according to any one of claims 1 to 5, characterized in that: The acceleration sensor includes a first sensor and a second sensor disposed at the front portion of the test vehicle, and a third sensor disposed at the B-pillar portion of the test vehicle.

Images