CN113639686B - Stroke measuring device - Google Patents
Stroke measuring device Download PDFInfo
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- CN113639686B CN113639686B CN202110917858.4A CN202110917858A CN113639686B CN 113639686 B CN113639686 B CN 113639686B CN 202110917858 A CN202110917858 A CN 202110917858A CN 113639686 B CN113639686 B CN 113639686B
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- detection section
- accommodating cavity
- wire
- guide rail
- length
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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
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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
- G01B21/22—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 angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a stroke measuring device, which is used for measuring the moving stroke of a vehicle pedal, wherein the vehicle pedal is provided with two detection positions, the stroke measuring device comprises a shell, a stay wire assembly and a measuring assembly, and the shell is provided with an accommodating cavity and a guard plate fixed above the vehicle pedal; the pull wire assembly comprises a pull wire, one end of the pull wire is wound in the accommodating cavity, the other end of the pull wire extends out of the accommodating cavity to form a detection section, the end part of the detection section is used for being connected with the vehicle pedal, the length and the angle of the detection section can be adjusted to adapt to the movement of the vehicle pedal, and the detection section is used for respectively forming a first detection section and a second detection section at two detection positions correspondingly; the measuring component is used for detecting and obtaining the length of the first detection section, the length of the second detection section and the angle between the first detection section and the second detection section. According to the scheme, the actual displacement stroke of the vehicle pedal is calculated by combining the cosine law through the first detection section length, the second detection section length and the angle between the first detection section and the second detection section, and the accuracy is high.
Description
Technical Field
The invention relates to the technical field of measuring devices, in particular to a stroke measuring device.
Background
Nowadays, automobiles are not only a transportation tool, but consumers increasingly pay attention to the comfort and the controllability of the automobiles when purchasing the automobiles. The performance of the brake system plays an important role in safe driving, the sensitivity of the brake system is high, the driving comfort can be reduced, the brake system can give an unsafe feeling to people again, when the brake pedal feeling test is carried out, the pedal stroke is a key parameter, and the parameter needs to be accurately, simply and conveniently measured in the test process. However, the conventional displacement measuring device uses the length variation of the wire as the displacement of the brake pedal, which is smaller than the actual movement displacement of the brake pedal, and the measurement accuracy is not high.
Disclosure of Invention
The invention mainly aims to provide a stroke measuring device, aiming at solving the technical problem that the existing displacement measuring device is low in measuring precision.
To achieve the above object, the present invention provides a stroke measuring device for measuring a moving stroke of a vehicle pedal having two detection positions on the moving stroke, the stroke measuring device comprising:
the shell is provided with an accommodating cavity and is used for being fixed on a guard plate above the vehicle pedal;
the stay wire assembly comprises a stay wire, one end of the stay wire is wound in the accommodating cavity, the other end of the stay wire extends out of the accommodating cavity to form a detection section, the end part of the detection section is used for being connected with the vehicle pedal, the length and the angle of the detection section can be adjusted to adapt to the movement of the vehicle pedal, and the detection section is used for respectively forming a first detection section and a second detection section on the two detection positions correspondingly; and the number of the first and second groups,
and the measuring component is used for detecting and obtaining the length of the first detection segment, the length of the second detection segment and an angle between the first detection segment and the second detection segment.
Optionally, the housing is provided with an elongated slot extending therethrough, and the elongated slot is communicated with the accommodating cavity;
the stay wire assembly further comprises a guide rail, the guide rail is rotatably arranged, one end of the guide rail is located in the accommodating cavity, the other end of the guide rail penetrates through the long-shaped groove, a wire passing hole penetrates through the guide rail along the middle of the accommodating cavity towards the direction of the long-shaped groove, the stay wire is provided with a penetrating section penetrating through the wire passing hole, the penetrating section is connected with the detection section, and the detection section correspondingly drives the guide rail to synchronously rotate in the process of forming the first detection section into the second detection section;
the measuring assembly detects the rotation angle of the guide rail.
Optionally, the aperture of the wire passing hole is arranged in a gradually expanding manner along the direction of the long-shaped groove towards the middle part of the accommodating cavity.
Optionally, the long-shaped groove is arranged along the circumferential extension of the accommodating cavity, the long-shaped groove is arranged in a circular arc shape, the corresponding central angle is alpha, and alpha is more than or equal to 90 degrees and less than or equal to 150 degrees.
Optionally, a distance from the rotation center of the guide rail to the end far away from the elongated slot is a, a distance from the rotation center of the guide rail to the end near the elongated slot is b, a: b =1: (4-6).
Optionally, the measurement assembly comprises:
the stay wire sensor is arranged in the accommodating cavity, corresponds to the stay wire and is used for measuring the length of the first detection section and the length of the second detection section pulled out of the accommodating cavity; and/or the presence of a gas in the atmosphere,
and the angle sensor is arranged in the accommodating cavity, corresponds to the stay wire and is used for measuring the angle between the first detection section and the second detection section.
Optionally, the stroke measuring device further includes a circuit board assembly, and the circuit board assembly is disposed in the accommodating cavity and electrically connected to the pull wire sensor and/or the angle sensor.
Optionally, the pull wire assembly further comprises a wire winding structure, the wire winding structure comprising:
the winding drum rotating shaft is arranged in the accommodating cavity;
the winding drum is rotationally sleeved on the winding drum rotating shaft, and one end of the pull wire, which is positioned in the accommodating cavity, is wound on the peripheral surface of the winding drum; and the number of the first and second groups,
and the reset coil spring is arranged between the winding drum rotating shaft and the winding drum.
Optionally, the reel comprises:
the pull wire is wound on the peripheral surface of the cylinder;
the inner sleeve body is sleeved in the cylinder body and sleeved on the rotary shaft of the winding drum; and the number of the first and second groups,
the reinforcing rib is arranged between the cylinder body and the inner sleeve body;
the reset coil spring is arranged between the winding drum rotating shaft and the drum body.
Optionally, the lower end surface of the housing has a mounting surface arranged in a plane, and the mounting surface is provided with a magic tape.
The travel measuring device provided by the invention connects the detection section with the vehicle pedal, so that the detection section moves along with the vehicle pedal, the detection section forms the first detection section and the second detection section when the vehicle pedal is positioned at two detection positions, and then the measurement assembly measures the length of the first detection section, the length of the second detection section and the angle between the first detection section and the second detection section, and a triangle is formed by enclosing the length of the first detection section, the length of the second detection section and the displacement travel of the vehicle pedal. Therefore, the actual displacement travel of the vehicle pedal can be calculated by means of the cosine law through the length of the first detection section, the length of the second detection section and the angle between the first detection section and the second detection section, and the accuracy is high.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of one embodiment of a travel measuring device of the present invention;
FIG. 2 is a schematic view of the housing and guide rails of FIG. 1;
FIG. 3 is a schematic view of the travel measuring device of FIG. 1 mounted on a fender to measure the travel of a pedal of a vehicle;
FIG. 4 is a schematic half-sectional view of the spool structure of FIG. 1;
fig. 5 is a schematic view of the operation principle of the stroke measuring device in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
When the brake pedal feeling test is carried out, the pedal stroke is a key parameter, and the parameter needs to be accurately, simply and conveniently measured in the test process. However, the conventional displacement measuring device uses the length variation of the wire as the displacement of the brake pedal, which is smaller than the actual movement displacement of the brake pedal, and the measurement accuracy is not high.
In view of this, the present invention provides a stroke measuring device to solve the technical problem of low measurement accuracy of the existing displacement measuring device. Fig. 1 to 5 show an embodiment of a stroke measuring device according to the present invention.
The invention provides a stroke measuring device 100, which is used for measuring the moving stroke of a vehicle pedal 200, wherein the vehicle pedal 200 has two detection positions on the moving stroke, the stroke measuring device 100 comprises a shell 1, a pull wire assembly 2 and a measuring assembly 3, the shell 1 is provided with an accommodating cavity and is used for being fixed on a guard plate 300 above the vehicle pedal 200; the stay wire assembly 2 comprises a stay wire 21, one end of the stay wire 21 is wound in the accommodating cavity, the other end of the stay wire 21 extends out of the accommodating cavity to form a detection section, the end part of the detection section is used for being connected with the vehicle pedal 200, the length and the angle of the detection section can be adjusted to adapt to the movement of the vehicle pedal 200, and the detection section is used for correspondingly forming a first detection section 211 and a second detection section 212 at the two detection positions respectively; and the measuring component 3 is used for detecting and obtaining the length of the first detecting section 211, the length of the second detecting section 212 and the angle between the first detecting section 211 and the second detecting section 212.
According to the scheme, the detection sections are connected with the vehicle pedal 200, so that the detection sections move along with the vehicle pedal 200, the detection sections form the first detection section 211 and the second detection section 212 when the vehicle pedal 200 is located at two detection positions, the length of the first detection section 211, the length of the second detection section 212 and the angle between the first detection section 211 and the second detection section 212 are measured through the measuring component 3, and a triangle is formed by enclosing the length of the first detection section 211, the length of the second detection section 212 and the displacement stroke of the vehicle pedal 200. Therefore, by means of the cosine law, the actual displacement stroke L of the vehicle pedal 200 can be calculated through the length L1 of the first detection section 211, the length L2 of the second detection section 212 and the angle β between the first detection section 211 and the second detection section 212, and the accuracy is high, and the specific calculation formula is as follows:
it should be noted that the shape of the housing 1 is not limited, and may be a rectangular parallelepiped, or may be a sphere, and in this embodiment, the housing 1 is disposed in a cylindrical shape.
Further, the housing 1 is provided with an elongated slot 1a in a penetrating manner, and the elongated slot 1a is communicated with the accommodating cavity; the stay wire assembly 2 further comprises a guide rail 22, the guide rail 22 is rotatably arranged, one end of the guide rail 22 is located in the accommodating cavity, the other end of the guide rail is arranged in the long-shaped groove 1a in a penetrating manner, a wire passing hole penetrates through the guide rail 22 along the middle of the accommodating cavity towards the direction of the long-shaped groove 1a, the stay wire 21 is provided with a penetrating section penetrating the wire passing hole, the penetrating section is connected with the detection section, the detection section correspondingly drives the guide rail 22 to rotate synchronously in the process that the first detection section 211 forms the second detection section 212; the measuring assembly 3 detects the angle of rotation of the guide rail 22.
In this embodiment, the guide rail 22 rotates synchronously with the penetrating section, and then the measurement component 3 measures the rotation angle of the guide rail 22, that is, the angle between the first detection section 211 and the second detection section 212 is obtained. It can be understood that, when the through section drives the guide rail 22 to rotate synchronously, one end of the guide rail 22 located on the elongated slot 1a moves along the length direction of the elongated slot 1 a. In addition, in this embodiment, the material of the guide rail 22 is metal, so that the service life is prolonged.
Furthermore, in order to facilitate the penetrating section to penetrate through the wire passing hole, in this embodiment, the aperture of the wire passing hole is gradually enlarged along the direction of the elongated groove 1a toward the middle of the accommodating cavity. That is, the end of the guide rail 22 facing away from the elongated slot 1a is flared so that the pulling wire 21 can be inserted from the end of the wire passing hole facing away from the elongated slot 1 a.
Further, the long-shaped groove 1a extends along the circumferential direction of the accommodating cavity, the long-shaped groove 1a is arranged in an arc shape, so that the long-shaped groove 1a corresponds to a central angle, and when the central angle corresponding to the long-shaped groove 1a is too large, external dust is easy to enter the accommodating cavity from the long-shaped groove 1a, so that dust is accumulated in the accommodating cavity; when the center angle corresponding to the elongated groove 1a is too small, the rotation angle of the guide rail 22 is limited so that the measurement range of the stroke measuring device 100 does not satisfy practical use. In the present embodiment, the central angle α of the elongated slot 1a is α, and α is greater than or equal to 90 ° and less than or equal to 150 °, so as to avoid ash ingress for a certain extent and meet the requirement of the measurement range in practical application, and preferably, the central angle α of the elongated slot 1a is 120 °.
Further, in order to facilitate the rotation of the guide rail 22 around the rotation center for the convenience of operation measurement, in this embodiment, the distance from the rotation center of the guide rail 22 to the end away from the elongated slot 1a is a, the distance from the rotation center of the guide rail 22 to the end close to the elongated slot 1a is b, a: b =1: (4 to 6), preferably, a: b =1:5.
further, the form of the measuring assembly 3 is not limited, and the measuring assembly can be directly used for measuring through a length scale and a protractor, and can also be in other forms. In this embodiment, the measuring assembly 3 includes a pull line sensor 31 and/or an angle sensor 32, the pull line sensor 31 is disposed in the accommodating cavity and is disposed corresponding to the pull line 21 for measuring the lengths of the first detecting section 211 and the second detecting section 212 pulled out from the accommodating cavity; the angle sensor 32 is disposed in the accommodating cavity and corresponding to the pull wire 21, and is configured to measure an angle between the first detecting section 211 and the second detecting section 212. The pull wire sensor 31 or/and the angle sensor 32 are/is arranged in the accommodating cavity, so that the pull wire sensor 31 and the angle sensor 32 can be protected, and meanwhile, all parts are integrated in the accommodating cavity, so that the structure is more compact, the size is reduced, and the selected position of the travel measuring device 100 which can be installed in a vehicle cabin is enlarged.
Further, the stroke measuring device 100 further includes a circuit board assembly 5, and the circuit board assembly 5 is disposed in the accommodating cavity and electrically connected to the pull line sensor 31 and/or the angle sensor 32. The circuit board assembly 5 obtains the measurement information of the pull-wire sensor 31 and/or the angle sensor 32, and in an embodiment, the circuit board assembly 5 obtains the measurement information of the pull-wire sensor 31 and the angle sensor 32 at the same time, and calculates the displacement stroke of the vehicle pedal 200 according to the measurement information. It can be understood that, the stroke measuring device 100 may further be provided with a collecting device, the collecting device is electrically connected to the circuit board assembly 5 through a connecting wire for storing the displacement stroke of the vehicle pedal 200 calculated by the circuit board assembly 5, one end of the connecting wire is located in the accommodating cavity and connected to the circuit board assembly 5, and the other end of the connecting wire is located outside the accommodating cavity and connected to the collecting device.
Further, the wire pulling assembly 2 further comprises a wire winding structure 23, the wire winding structure 23 comprises a drum rotating shaft 231, a drum and a return coil spring 232, and the drum rotating shaft 231 is arranged in the accommodating cavity; the winding drum is rotationally sleeved on the winding drum rotating shaft 231, and one end of the pull wire 21, which is positioned in the accommodating cavity, is wound on the outer peripheral surface of the winding drum; and the return coil spring 232 is provided between the spool rotation shaft 231 and the spool. When the detection section extends, the winding drum rotates forwards to release the pull wire 21, and the return coil spring 232 is in a compressed or extended state; after the measurement is finished, the reset coil spring 232 resets, so that the winding drum is reversely rotated to tighten the pull wire 21, the detection section is shortened, the pull wire 21 is tightened in the accommodating cavity, and the pull wire 21 is prevented from being dirty and messy. It is understood that the spool has a mounting cavity, the spool rotation shaft 231 is inserted into the mounting cavity, and one end of the coil spring is connected to the spool rotation shaft 231 and the other end is connected to the inner wall of the spool.
Further, the winding drum comprises a drum body 233, an inner sleeve body 234 and a reinforcing rib 235, and the pull wire 21 is wound on the outer circumferential surface of the drum body 233; the inner sleeve 234 is sleeved in the cylinder 233 and sleeved on the drum rotating shaft 231; the reinforcing rib 235 is arranged between the cylinder 233 and the inner sleeve 234; the return coil spring 232 is provided between the spool rotation shaft 231 and the cylinder 233. The reinforcing rib 235 is disposed between the inner sheath 234 and the cylinder 233 to enhance the strength of the wire winding structure 23.
Further, in order to fix the housing 1 on the guard plate 300, the lower end surface of the housing 1 has a mounting surface 5 arranged in a plane, and the mounting surface 5 is provided with a magic tape. Through installation face 5 enlarges casing 1 with the area of contact of backplate 300, and then be convenient for the magic subsides firmly paste in backplate 300.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A stroke measuring device for measuring a moving stroke of a vehicle pedal having two detection positions on the moving stroke, characterized by comprising:
the shell is provided with an accommodating cavity and is used for being fixed on a guard plate above the vehicle pedal;
the stay wire assembly comprises a stay wire, one end of the stay wire is wound in the accommodating cavity, the other end of the stay wire extends out of the accommodating cavity to form a detection section, the end part of the detection section is used for being connected with the vehicle pedal, the length and the angle of the detection section can be adjusted to adapt to the movement of the vehicle pedal, and the detection section is used for respectively forming a first detection section and a second detection section on the two detection positions correspondingly; and the number of the first and second groups,
the measuring component is used for detecting and obtaining the length of the first detection section, the length of the second detection section and an angle between the first detection section and the second detection section;
the shell is provided with a long groove in a penetrating manner, and the long groove is communicated with the accommodating cavity;
the stay wire assembly further comprises a guide rail, the guide rail is rotatably arranged, one end of the guide rail is located in the accommodating cavity, the other end of the guide rail penetrates through the long-shaped groove, a wire passing hole penetrates through the guide rail along the middle of the accommodating cavity towards the direction of the long-shaped groove, the stay wire is provided with a penetrating section penetrating through the wire passing hole, the penetrating section is connected with the detection section, and the detection section correspondingly drives the guide rail to synchronously rotate in the process of forming the first detection section into the second detection section;
the measuring assembly detects the rotation angle of the guide rail;
the measurement assembly includes:
the stay wire sensor is arranged in the accommodating cavity, corresponds to the stay wire and is used for measuring the length of the first detection section and the length of the second detection section pulled out of the accommodating cavity; and/or the presence of a gas in the gas,
the angle sensor is arranged in the accommodating cavity, corresponds to the pull wire and is used for measuring the angle between the first detection section and the second detection section;
the stay wire assembly further comprises a wire coiling structure, and the wire coiling structure comprises:
the winding drum rotating shaft is arranged in the accommodating cavity;
the winding drum is rotationally sleeved on the winding drum rotating shaft, and one end of the pull wire, which is positioned in the accommodating cavity, is wound on the peripheral surface of the winding drum; and the number of the first and second groups,
the reset coil spring is arranged between the winding drum rotating shaft and the winding drum;
the spool includes:
the pull wire is wound on the peripheral surface of the cylinder;
the inner sleeve body is sleeved in the cylinder body and sleeved on the rotary shaft of the winding drum; and the number of the first and second groups,
the reinforcing rib is arranged between the cylinder body and the inner sleeve body;
the reset coil spring is arranged between the winding drum rotating shaft and the drum body.
2. The stroke measuring device of claim 1, wherein the bore diameter of the wire through hole is gradually enlarged along the direction from the elongated groove to the middle of the accommodating cavity.
3. The travel measuring device of claim 1, wherein the elongated slot extends circumferentially of the receiving cavity, the elongated slot being disposed in an arc and having a corresponding center angle α of 90 ° α ≦ 150 °.
4. The stroke measuring device of claim 1, wherein the distance from the center of rotation of the guide rail to the end away from the elongated slot is a, the distance from the center of rotation of the guide rail to the end near the elongated slot is b, a: b =1: (4-6).
5. The stroke measuring device of claim 1, further comprising a circuit board assembly disposed within the receiving cavity and electrically connected to the pull wire sensor and/or the angle sensor.
6. The stroke measuring device of claim 1, wherein the lower end surface of the housing has a planar mounting surface, and the mounting surface is provided with a magic tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110917858.4A CN113639686B (en) | 2021-08-10 | 2021-08-10 | Stroke measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110917858.4A CN113639686B (en) | 2021-08-10 | 2021-08-10 | Stroke measuring device |
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| Publication Number | Publication Date |
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| CN113639686A CN113639686A (en) | 2021-11-12 |
| CN113639686B true CN113639686B (en) | 2022-11-01 |
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| CN202110917858.4A Active CN113639686B (en) | 2021-08-10 | 2021-08-10 | Stroke measuring device |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5828290A (en) * | 1997-08-22 | 1998-10-27 | Cts Corporation | Modular position sensor |
| SE536991C2 (en) * | 2012-12-02 | 2014-11-25 | Carl Johan Walter Weschke | Rotary detection device and vehicle pedal including such device |
| CN203642836U (en) * | 2013-11-29 | 2014-06-11 | 上海汇众汽车制造有限公司 | Stay wire displacement sensor and stay wire direction adjusting assembly thereof |
| CN105547214A (en) * | 2016-03-03 | 2016-05-04 | 贝加尔（浙江）汽车零部件有限公司 | Automobile pedal detection device |
| CN106197972A (en) * | 2016-07-04 | 2016-12-07 | 燕山大学 | A kind of automobile pedal travel test device and method |
| CN106950050B (en) * | 2017-03-24 | 2018-12-21 | 安徽江淮汽车集团股份有限公司 | Brake-pedal travel measuring device |
| CN109029226A (en) * | 2017-06-08 | 2018-12-18 | 东风汽车有限公司 | Dynamic measuring device and measuring method for vehicle pedal travel |
| CN109115148B (en) * | 2018-09-27 | 2023-05-16 | 长春一东离合器股份有限公司 | Automobile pedal travel testing device |
| CN109489991B (en) * | 2018-12-07 | 2020-05-19 | 安徽江淮汽车集团股份有限公司 | Method and system for calculating opening degree of accelerator pedal in electric vehicle performance test |
| CN113029077A (en) * | 2019-12-25 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Pedal travel testing method and system |
| CN212844375U (en) * | 2020-10-13 | 2021-03-30 | 安徽江淮汽车集团股份有限公司 | Automobile brake pedal test system |
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