CN117606409A - Device and method for detecting weakening processing qualification rate of airbag cover plate - Google Patents

Device and method for detecting weakening processing qualification rate of airbag cover plate Download PDF

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Publication number
CN117606409A
CN117606409A CN202311636798.4A CN202311636798A CN117606409A CN 117606409 A CN117606409 A CN 117606409A CN 202311636798 A CN202311636798 A CN 202311636798A CN 117606409 A CN117606409 A CN 117606409A
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China
Prior art keywords
line
weakness
weakening
probe
track
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CN202311636798.4A
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Chinese (zh)
Inventor
段少丽
吕姝颖
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Wuhan Huiyun Technology Co ltd
Wuhan Technical College of Communications
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Wuhan Huiyun Technology Co ltd
Wuhan Technical College of Communications
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Priority to CN202311636798.4A priority Critical patent/CN117606409A/en
Publication of CN117606409A publication Critical patent/CN117606409A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Air Bags (AREA)

Abstract

The invention provides a device and a method for detecting the weakening processing qualification rate of an air bag cover plate, wherein the asymmetric air bag cover plate comprises a rectangular weakening area, a first weakening line, a second weakening line and a third weakening line which are positioned in the weakening area, the first weakening line and the second weakening line are axisymmetric relative to the third weakening line and are in a straight line state, the lengths of the first weakening line and the second weakening line are half of that of the third weakening line, the depth change slope of the third weakening line is the same as that of the first weakening line and the second weakening line, the method for detecting the weakening processing qualification rate of the asymmetric air bag cover plate is realized by an asymmetric air bag cover plate weakening processing qualification rate detection device, and whether the processing of the asymmetric air bag cover plate weakening line is qualified or not is judged by detecting the size relation of the asymmetric air bag cover plate weakening lines.

Description

Device and method for detecting weakening processing qualification rate of airbag cover plate
Technical Field
The invention relates to the field of vehicle safety, in particular to a device and a method for detecting weakening processing qualification rate of an airbag cover plate.
Background
The safety belt and the safety airbag belong to a passive safety system of a vehicle, and in the collision process of the vehicle, even if the safety belt is worn, the upper body of a passenger is easy to move greatly and collide with other parts in the vehicle, and the safety airbag cushions the collision of the passenger and the parts in the vehicle through the collision, so that the short plate of the safety belt is compensated. However, the stress points of the three-point seat belt in the prior art are mainly concentrated on one side shoulder, and the shoulder is subjected to a large restraining force of the seat belt during collision, and the restraining force is easy to injure the shoulders of drivers and passengers. In the prior art, most of weakened lines of an airbag cover plate are of U-shaped or H-shaped symmetrical structures, and the airbag is irregularly unfolded after tearing the weakened lines in the collision process, so that the airbag can not be guided in the airbag unfolding process based on the vulnerable part; in addition, there is no matching qualification rate detection method for the weakening process of the weakening line of the airbag cover with a specific shape.
Disclosure of Invention
In view of the above problems, the present invention proposes a method for detecting a weakening processing qualification rate of an asymmetric airbag cover plate, where the asymmetric airbag cover plate includes a rectangular weakened area, and a first weakened line, a second weakened line, and a third weakened line located inside the weakened area, the third weakened line is parallel to a long side of the rectangular weakened area, the first weakened line and the second weakened line are axisymmetric with respect to the third weakened line, and the first weakened line, the second weakened line, and the third weakened line have a common first endpoint, the lengths of the first weakened line and the second weakened line are equal, and are half of the length of the third weakened line, the depths of the first weakened line, the second weakened line, and the third weakened line linearly decrease from the first common endpoint in a direction away from the first common endpoint, and the depth change slope of the third weakened line is the same as the first weakened line and the second weakened line;
the method for detecting the weakening processing qualification rate of the asymmetric airbag cover plate is realized by an asymmetric airbag cover plate weakening processing qualification rate detection device, the device comprises a track probe, a horizontal sliding track and a vertical displacement sensor, wherein the track probe is provided with a triaxial acceleration sensor, the horizontal sliding track is provided with a chute along the X direction, the horizontal sliding track can move along the Y direction, the track probe 1 can slide along the chute of the horizontal sliding track in the X direction, and the track probe can move along the Z direction;
characterized in that the method comprises the following steps:
s1: the method comprises the steps that a track probe is arranged at an end point, far away from a first public end point, of a first weakening line, the horizontal sliding track is controlled to move at a uniform speed along a Y direction, the track probe is marked to be located at a departure point on the horizontal sliding track, when the track probe moves to an end point, far away from the first public end point, of a second weakening line, the track probe is controlled to stop moving, and the track probe is marked to be located at a steering point and an ending point on the horizontal sliding track; the vertical height H of the rail probe at the starting point is detected by a vertical displacement sensor throughout the movement path 1 Vertical height H of orbital probe at first common endpoint 2 And vertical height H of the orbital probe at the termination point 3 ；
S2: acquiring the acceleration a along the X direction of the track probe in the whole travel from the first weakening line to the second weakening line through a triaxial acceleration sensor carried on the track probe X Acceleration a in Z direction Z ；
S3: acceleration a in X direction of 5% before, 5% after and 10% in the middle of the reject stroke X Acceleration a in Z direction Z Is a numerical value of (2);
s4: comparing the acceleration data removed in the step S3, if the acceleration a along the X direction is X =0, and acceleration a in Z direction Z If the air bag cover plate is not qualified, the step S5 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
s5: comparing whether the departure point of the track probe on the horizontal sliding track and the termination point of the track probe on the horizontal sliding track are coincident, if so, entering a step S6, and if not, judging that the weakening processing of the air bag cover plate is unqualified;
s6: comparing the vertical height value detected by the vertical displacement sensor, if H 1 -H 2 ＝H 3 -H 2 >0, entering a step S7, and if not, judging that the weakening processing of the airbag cover plate is unqualified;
s7: the method comprises the steps that the track probe 1 is arranged at a first public endpoint, the track probe is controlled to move at a uniform speed along the X direction, the track probe is marked to be positioned at a starting point on a horizontal sliding track, when the track probe moves to a second public endpoint, the track probe is controlled to stop moving, and the track probe is marked to be positioned at an ending point on the horizontal sliding track; in the above-mentioned movement path, the vertical height H of the orbit probe at the first common end point is detected by the vertical displacement sensor 2 And the vertical height H of the orbital probe 1 at the termination point 4 ；
S8: the acceleration a along the X direction of the track probe 1 in the whole travel along the third weakening line is obtained by a triaxial acceleration sensor mounted on the track probe 1 X3 Acceleration a in Z direction Z3 ；
S9: removing the acceleration a along the X direction of the front 5%, the rear 5% and the middle 10% of the travel X3 Acceleration a in Z direction Z3 Is a numerical value of (2);
s10: comparing the acceleration data removed in step S9, if the acceleration a along the X direction is X3 =0, and acceleration a in Z direction Z3 If the air bag cover plate is not qualified, the step S11 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
s11: comparing whether the distance between the departure point and the termination point of the track probe 1 on the horizontal sliding track 2 in the step S7 is twice the distance between the departure point and the turning point or between the termination point and the turning point of the track probe 1 on the horizontal sliding track 2 in the step S1, if yes, entering a step S12, otherwise judging that the weakening processing of the air bag cover plate is unqualified;
s12: comparing the vertical height values detected by the vertical displacement sensor 3, if H 4 -H 2 ＝2(H 3 -H 2 ) Or H 4 -H 2 ＝2(H 1 -H 2 ) And if not, judging that the weakening processing of the airbag cover plate is not qualified.
Preferably, the asymmetric airbag cover further comprises a fourth line of weakness and a fifth line of weakness located inside the region of weakness, the third line of weakness, the fourth line of weakness and the fifth line of weakness having a common second end point, the fourth line of weakness and the fifth line of weakness being equal in length and all perpendicular to the third line of weakness.
Preferably, the first, second, third, fourth and fifth weakened lines are all straight lines.
Preferably, the airbag cover is a steering wheel airbag cover.
Preferably, the first common endpoint is located at a position to the left of the center of the rectangular weakened zone.
The beneficial effects are that: 1) The safety airbag weakening line with an asymmetric structure is arranged, the part of the airbag, which is positioned at the shoulder stress point side, is guided to be unfolded before the other side, the shoulder is supported in advance, and the damage of the restraint force of the safety belt to the shoulder at one side of a driver is reduced;
2) A plurality of weakening lines with the same slope and different lengths are arranged, so that the tearing speeds of the different weakening lines on the air bag cover plate are the same, and the air bag cover plate is prevented from being torn off according to a specified path or splashing in the tearing process due to uneven tearing;
3) Parameters such as the length, the slope and the like of different weakening lines are accurately and rapidly acquired through the track probe matched with the triaxial acceleration sensor, so that the analysis of the qualification rate is facilitated.
Drawings
FIG. 1 is a schematic illustration of an asymmetric airbag cover of the present invention;
FIG. 2 is a top view of an asymmetric airbag cover detection apparatus of the present invention;
FIG. 3 is a front view of an asymmetric airbag cover detection apparatus of the present invention;
Detailed Description
Referring to fig. 1 of the drawings, an asymmetric airbag cover according to the present invention is shown for a steering wheel airbag and comprises a rectangular weakened area ABCD, wherein the weakened area ABCD comprises a first weakened line OA, a second weakened line OC, a third weakened line OE, a fourth weakened line EB and a fifth weakened line ED located inside the weakened area ABCD, wherein the third weakened line OE is parallel to the long side of the rectangular weakened area ABCD, and the first weakened line OA and the second weakened line OC are formed with respect to the third weakened line OEAxisymmetric, and the first line of weakness OA, the second line of weakness OC, the third line of weakness OE have a common first end point O. First line of weakness L OA A second line of weakness L OC Third line of weakness L OE Is of the size relation L OA ＝L OC ＝L OE /2. The third line of weakness OE, the fourth line of weakness EB, the fifth line of weakness ED have a common second end point E, the fourth line of weakness EB, the fifth line of weakness ED being of equal length and all perpendicular to the third line of weakness OE.
The rectangular weakening area ABCD of the cover plate of the air bag is set as follows, and the depth of the first common endpoint O is D 1 The depth of the second common endpoint E is D 2 The first line of weakness OA and the second line of weakness OC have a depth D away from the end point A, C at the first end point O 3 Depth dimension relationship D 1 -D 3 ＝(D 1 -D 2 ) The depth of the first weakening line OA, the second weakening line OC and the third weakening line OE is linearly reduced from the first common endpoint O to the direction far away from the first common endpoint, due to the third weakening line L OE Is the length of the first weakening line L OA A second line of weakness L OC Twice the third line of weakness L OE The depth change slope of (c) and the first line of weakness L OA A second line of weakness L OC The same applies.
According to the structure of the weakened line of the cover plate of the air bag, the tearing starting point is the first public end point O, the first public end point O is located at the left side of the center of the rectangular weakened area ABCD, the tearing is started by the first public end point O, the length of the third weakened line OE on the right side is larger than that of the first weakened line OA and that of the third weakened line OC on the second side, the left side part of the air bag is enabled to be inflated preferentially, and the shoulder part of the driver on one side, which is limited by the safety belt, is supported in advance. The first weakening line OA, the second weakening line OC are axisymmetric with respect to the third weakening line OE and the third weakening line L OE The depth change slope of (c) and the first line of weakness L OA A second line of weakness L OC The same speed is achieved in this way, so that the first weakening line OA, the second weakening line OC and the third weakening line OE tear at the same speed, and the airbag cover plate is prevented from tearing along a specified path or splashing in the tearing process due to uneven tearing.
The asymmetric airbag cover panel weakening line of the present invention needs to satisfy that the first weakening line OA, the second weakening line OC are axisymmetric with respect to the third weakening line OE, and are in a straight line state, and the first weakening line L OA A second line of weakness L OC With respect to the third line of weakness L OE Is of the size relation L OA ＝L OC ＝L OE /2 and a third line of weakness L OE The depth change slope of (c) and the first line of weakness L OA A second line of weakness L OC Based on the dimensional relationship, the invention provides a method for detecting the dimensional relationship, and the method is used for detecting the weakening processing qualification rate of the asymmetric airbag cover plate.
The invention relates to a method for detecting the weakening processing qualification rate of an asymmetric airbag cover plate, which is realized by an asymmetric airbag cover plate weakening processing qualification rate detection device, as shown in fig. 2-3, wherein the device comprises a track probe 1, a horizontal sliding track 2 and a vertical displacement sensor 3, wherein the track probe 1 is provided with a triaxial acceleration sensor, the horizontal sliding track 2 is provided with a chute along the X direction, the horizontal sliding track 2 can move along the Y direction, the track probe 1 can slide along the chute of the horizontal sliding track 2 in the X direction, and the track probe 1 can move along the Z direction.
The detection flow of the detection method is as follows:
s1: placing the track probe 1 at an end point A of the first weakening line OA, which is far away from the first public end point O, controlling the horizontal sliding track 2 to move at a uniform speed along the Y direction, marking a departure point of the track probe 1 on the horizontal sliding track 2, controlling the horizontal sliding track 2 to stop moving when the track probe 1 moves to an end point C of the second weakening line OC, which is far away from the first public end point O, marking a turning point of the track probe 1 on the horizontal sliding track 2 (namely, a position of the track probe 1 on the horizontal sliding track 2 when the track probe 1 moves to the first public end point O) and a termination point; the vertical height H of the rail probe 1 at the starting point is detected by the vertical displacement sensor 3 throughout the entire movement path 1 Vertical height H of orbital probe 1 at first common endpoint O 2 And the vertical height H of the orbital probe 1 at the termination point 3 ；
The track probe 1 is placed at the end point a of the first weakening line OA far from the first common end point O, and the track probe 1 moves from the end point a to the first common end point O and then to the end point C during the uniform motion of the horizontal sliding track 2 along the Y direction due to the limitation of the motion path of the track probe 1 by the groove formed by the weakening line.
S2: the acceleration a along the X direction of the track probe 1 is obtained by a triaxial acceleration sensor mounted on the track probe 1 in the whole travel from the first weakening line to the second weakening line X Acceleration a in Z direction Z ；
S3: the whole stroke path length is set as S, and the acceleration a along the X direction is eliminated in three strokes of 0-5%S, 45-55-100-95-55-100 X Acceleration a in Z direction Z The values of (a), that is to say the acceleration a in the X direction in the first 5%, the last 5%, the middle 10% of the reject stroke X Acceleration a in Z direction Z Is a numerical value of (2);
since the first 5% of the travel is the travel of the track probe 1 from zero to uniform speed, the middle 10% of the travel is the travel of the track probe 1 with the direction of movement changed, and the last 5% of the travel is the travel of the track probe 1 from uniform speed to zero, the three travel will be opposite to the acceleration a along the X direction X Acceleration a in Z direction Z Interference is formed, and thus the values of the three strokes are eliminated.
S4: comparing the acceleration data removed in the step S3, if the acceleration a along the X direction is X =0, and acceleration a in Z direction Z If the air bag cover plate is not qualified, the step S5 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
if deflection or bending occurs during the weakening process, the track probe 1 will inevitably be affected by the deflection or bending path during the movement along the first weakening line OA and the second weakening line OC, and the X-direction velocity will be changed, resulting in an acceleration a along the X-direction X Not equal to 0, thus with acceleration a in the X-direction X =0 as a determination condition of whether the first weakened line OA and the second weakened line OC are straight lines; if weakenWhen the groove of the weakening line is concave or convex during processing, the track probe 1 is inevitably influenced by the concave or convex during the movement along the first weakening line OA and the second weakening line OC, the Z-direction speed will change, and the acceleration a along the Z-direction is caused Z Not equal to 0, thus with acceleration a in the Z direction Z =0 as a criterion for determining whether the depth inside the first and second weakened lines OA, OC strictly varies according to a constant slope.
S5: comparing whether the departure point of the track probe 1 on the horizontal sliding track 2 and the termination point of the track probe 1 on the horizontal sliding track 2 are coincident, if so, entering a step S6, and if not, judging that the weakening processing of the airbag cover plate is unqualified;
the purpose of comparing whether the departure point and the termination point of the track probe 1 on the horizontal sliding track 2 are coincident is to determine whether the lengths of the first weakening line OA and the second weakening line OC are equal, if the lengths are equal, the strokes of the track probe 1 on the two sections of weakening lines are equal, so that the departure point and the termination point will be coincident.
S6: comparing the vertical height values detected by the vertical displacement sensor 3, if H 1 -H 2 ＝H 3 -H 2 >0, entering a step S7, and if not, judging that the weakening processing of the airbag cover plate is unqualified;
comparing the vertical height H of the orbital probe 1 at the starting point 1 Vertical height H of orbital probe 1 at first common endpoint O 2 Whether or not the difference in (a) is equal to the vertical height H of the rail probe 1 at the termination point 3 Vertical height H of orbital probe 1 at first common endpoint O 2 And whether the difference is greater than zero, for the purpose of determining whether the depths of the first, second, and third lines of weakness OA, OC, OE decrease linearly from the first common endpoint O in a direction away from the first common endpoint.
S7: the orbit probe 1 is arranged at a first common endpoint O, the orbit probe 1 is controlled to move at a uniform speed along the X direction, the orbit probe 1 is marked to be positioned at a starting point on the horizontal sliding orbit 2, when the orbit probe 1 moves to a second common endpoint E, the orbit probe 1 is controlled to stop moving, and the orbit probe 1 is marked to be positioned in waterSmoothly moving the termination point on track 2; in the above-described movement stroke, the vertical height H of the rail probe 1 at the first common end point O is detected by the vertical displacement sensor 3 2 And the vertical height H of the orbital probe 1 at the termination point 4 。
S8: the acceleration a along the X direction of the track probe 1 in the whole travel along the third weakening line is obtained by a triaxial acceleration sensor mounted on the track probe 1 X3 Acceleration a in Z direction Z3 ；
S9: removing the acceleration a along the X direction of the front 5%, the rear 5% and the middle 10% of the travel X3 Acceleration a in Z direction Z3 Is a numerical value of (2);
s10: comparing the acceleration data removed in step S9, if the acceleration a along the X direction is X3 =0, and acceleration a in Z direction Z3 If the air bag cover plate is not qualified, the step S11 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
s11: comparing whether the distance between the departure point and the termination point of the track probe 1 on the horizontal sliding track 2 in the step S7 is twice the distance between the departure point and the turning point or between the termination point and the turning point of the track probe 1 on the horizontal sliding track 2 in the step S1, if yes, entering a step S12, otherwise judging that the weakening processing of the air bag cover plate is unqualified;
s12: comparing the vertical height values detected by the vertical displacement sensor 3, if H 4 -H 2 ＝2(H 3 -H 2 ) Or H 4 -H 2 ＝2(H 1 -H 2 ) And if not, judging that the weakening processing of the airbag cover plate is not qualified.

Claims (6)

1. The utility model provides a device for detecting air bag apron weakens processing qualification rate, the air bag apron includes the rectangle weakness and is located the inside first line of weakness, the second line of weakness, the third line of weakness is on a parallel with the long limit of rectangle weakness, first line of weakness, the second line of weakness is axisymmetric about the third line of weakness, and first line of weakness, the second line of weakness, the third line of weakness has common first extreme point, first line of weakness, the second line of weakness length equals, and is half of third line of weakness length, first line of weakness, the second line of weakness, third line of weakness degree of depth reduces by first public extreme point to the direction that keeps away from first public extreme point, and the degree of depth change slope of third line of weakness is the same with first line of weakness, second line of weakness;
the device is characterized by comprising a track probe, a horizontal sliding track, a vertical displacement sensor and a triaxial acceleration sensor, wherein the track probe is provided with a chute along the X direction, the horizontal sliding track can move along the Y direction, the track probe can slide along the chute of the horizontal sliding track along the X direction, and the track probe can move along the Z direction.
2. An apparatus for detecting a weakening process yield of an airbag cover as defined in claim 1, wherein the asymmetric airbag cover further comprises a fourth line of weakness, a fifth line of weakness, located within the weakened zone, the third line of weakness, the fourth line of weakness, the fifth line of weakness having a common second end point, the fourth line of weakness, the fifth line of weakness being equal in length and being perpendicular to the third line of weakness.
3. A device for detecting the qualification rate of the weakening process of an airbag cover as claimed in claim 2, wherein the first weakening line, the second weakening line, the third weakening line, the fourth weakening line and the fifth weakening line are all straight lines.
4. An apparatus for detecting air bag cover weakening process yield as defined in claim 1 wherein said air bag cover is a steering wheel air bag cover.
5. An apparatus for detecting air bag cover weakening process yield as defined in claim 1 wherein said first common endpoint is located at a position to the left of the center of the rectangular weakened zone.
6. A measurement method using an apparatus for detecting the weakening process yield of an airbag cover plate according to any one of claims 1 to 5, characterized in that the method comprises the steps of:
s1: the method comprises the steps that a track probe is arranged at an end point, far away from a first public end point, of a first weakening line, the horizontal sliding track is controlled to move at a uniform speed along a Y direction, the track probe is marked to be located at a departure point on the horizontal sliding track, when the track probe moves to an end point, far away from the first public end point, of a second weakening line, the track probe is controlled to stop moving, and the track probe is marked to be located at a steering point and an ending point on the horizontal sliding track; the vertical height H of the rail probe at the starting point is detected by a vertical displacement sensor throughout the movement path 1 Vertical height H of orbital probe at first common endpoint 2 And vertical height H of the orbital probe at the termination point 3 ；
S2: acquiring the acceleration a along the X direction of the track probe in the whole travel from the first weakening line to the second weakening line through a triaxial acceleration sensor carried on the track probe X Acceleration a in Z direction Z ；
S3: acceleration a in X direction of 5% before, 5% after and 10% in the middle of the reject stroke X Acceleration a in Z direction Z Is a numerical value of (2);
s4: comparing the acceleration data removed in the step S3, if the acceleration a along the X direction is X =0, and acceleration a in Z direction Z If the air bag cover plate is not qualified, the step S5 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
s5: comparing whether the departure point of the track probe on the horizontal sliding track and the termination point of the track probe on the horizontal sliding track are coincident, if so, entering a step S6, and if not, judging that the weakening processing of the air bag cover plate is unqualified;
s6: comparing the vertical height value detected by the vertical displacement sensor, if H 1 -H 2 ＝H 3 -H 2 >0, entering a step S7, and if not, judging that the weakening processing of the airbag cover plate is unqualified;
s7: the method comprises the steps that the track probe 1 is arranged at a first public endpoint, the track probe is controlled to move at a uniform speed along the X direction, the track probe is marked to be positioned at a starting point on a horizontal sliding track, when the track probe moves to a second public endpoint, the track probe is controlled to stop moving, and the track probe is marked to be positioned at an ending point on the horizontal sliding track; in the above-mentioned movement path, the vertical height H of the orbit probe at the first common end point is detected by the vertical displacement sensor 2 And the vertical height H of the orbital probe 1 at the termination point 4 ；
S8: the acceleration a along the X direction of the track probe 1 in the whole travel along the third weakening line is obtained by a triaxial acceleration sensor mounted on the track probe 1 X3 Acceleration a in Z direction Z3 ；
S9: removing the acceleration a along the X direction of the front 5%, the rear 5% and the middle 10% of the travel X3 Acceleration a in Z direction Z3 Is a numerical value of (2);
s10: comparing the acceleration data removed in step S9, if the acceleration a along the X direction is X3 =0, and acceleration a in Z direction Z3 If the air bag cover plate is not qualified, the step S11 is carried out, otherwise, the air bag cover plate weakening processing is judged to be unqualified;
s11: comparing whether the distance between the departure point and the termination point of the track probe 1 on the horizontal sliding track 2 in the step S7 is twice the distance between the departure point and the turning point or between the termination point and the turning point of the track probe 1 on the horizontal sliding track 2 in the step S1, if yes, entering a step S12, otherwise judging that the weakening processing of the air bag cover plate is unqualified;
s12: comparing the vertical height values detected by the vertical displacement sensor 3, if H 4 -H 2 ＝2(H 3 -H 2 ) Or H 4 -H 2 ＝2(H 1 -H 2 ) And if not, judging that the weakening processing of the airbag cover plate is not qualified.
CN202311636798.4A 2023-12-01 2023-12-01 Device and method for detecting weakening processing qualification rate of airbag cover plate Pending CN117606409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311636798.4A CN117606409A (en) 2023-12-01 2023-12-01 Device and method for detecting weakening processing qualification rate of airbag cover plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311636798.4A CN117606409A (en) 2023-12-01 2023-12-01 Device and method for detecting weakening processing qualification rate of airbag cover plate

Publications (1)

Publication Number Publication Date
CN117606409A true CN117606409A (en) 2024-02-27

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Application Number Title Priority Date Filing Date
CN202311636798.4A Pending CN117606409A (en) 2023-12-01 2023-12-01 Device and method for detecting weakening processing qualification rate of airbag cover plate

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