CN108918160B - Vehicle automatic test system, readable storage medium and test device - Google Patents
Vehicle automatic test system, readable storage medium and test device Download PDFInfo
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- CN108918160B CN108918160B CN201810845143.0A CN201810845143A CN108918160B CN 108918160 B CN108918160 B CN 108918160B CN 201810845143 A CN201810845143 A CN 201810845143A CN 108918160 B CN108918160 B CN 108918160B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses an automatic test system for vehicles, which comprises: the road condition control unit is used for controlling the simulated road conditions of the testing device, and the simulated road conditions comprise simulated ground friction and obstacles; the automatic driving unit is used for controlling the steering, the speed and the braking force of front wheels of the vehicle to be tested and is a controller; and the control unit is used for collecting and displaying the running states of the road condition control unit and the automatic driving unit, changing the running states of the road condition control unit and the automatic driving unit by receiving a control instruction, and acquiring corresponding driving data of the vehicle. The automatic driving unit is used for controlling the vehicle, manual work and robot are not needed for controlling parts in the vehicle, the testing cost is reduced, the automatic driving unit does not need to be in direct contact with a steering wheel, an accelerator or a brake, and the influence of errors of parts in the vehicle on road condition testing of the wheels is reduced. The invention also discloses a readable storage medium and a testing device adopting the automatic vehicle testing system.
Description
Technical Field
The invention relates to the technical field of automobile performance detection, in particular to an automatic vehicle testing system, a readable storage medium and a testing device.
Background
With the rapid development of the automobile industry and the improvement of the living standard of people, automobiles become one of indispensable transportation tools for people to go out, freight transportation and the like.
In a vehicle performance test, a floor dynamometer is generally used for testing multiple performances of the vehicle. The current test method is to place the automobile on a chassis dynamometer, adjust the chassis dynamometer to a specified function for testing, and command the driver in the automobile to execute corresponding operations, thereby completing the test of the automobile. In order to reduce errors caused by human factors, the test process generally configures more than two persons to perform a rotation test, for example, a new energy automobile test system based on man-vehicle-road closed-loop control disclosed in application number 201510179244.5.
The existing testing method consumes labor cost, and certain deviation necessarily exists when the same test is carried out manually. Application No. 201710432736.X discloses a vehicle test system, a storage medium storing a program thereof, a vehicle test method and a running resistance setting device, and application No. 201510258073.5 discloses a vehicle test system, a vehicle component test device and a vehicle test method, wherein an automatic driving robot is used for replacing manual work for testing in order to reduce test errors, the cost of the automatic driving robot is much higher than that of manual work, and the scheme cannot be applied to production of low-end vehicle types, particularly low-cost new energy vehicles.
Disclosure of Invention
It is an object of the present invention to provide an automatic vehicle testing system that does not employ human or robot.
An automatic vehicle testing system comprising:
the road condition control unit is used for controlling the simulated road conditions of the testing device, and the simulated road conditions comprise simulated ground friction and obstacles;
the automatic driving unit is used for controlling the steering, the speed and the braking force of front wheels of the vehicle to be tested and is a controller;
and the control unit is used for collecting and displaying the running states of the road condition control unit and the automatic driving unit, changing the running states of the road condition control unit and the automatic driving unit by receiving a control instruction, and acquiring corresponding driving data of the vehicle.
According to the automatic vehicle testing system provided by the invention, the automatic driving unit is arranged, manual and robot control of parts in the vehicle is not needed, and when the automatic driving unit is connected with the steering gear, the engine and the brake, direct contact with a steering wheel, an accelerator or a brake is not needed, so that the influence of errors of parts in the vehicle on road condition testing of wheels is reduced.
In addition, the automatic vehicle testing system provided by the invention can also have the following additional technical characteristics:
further, the road condition control unit comprises a friction control module and an obstacle control module, the friction control module is used for controlling the running resistance of the vehicle to be tested, and the obstacle control module is used for changing the running height of the wheels of the vehicle to be tested, so that the state that the wheels meet the obstacle can be simulated.
Furthermore, the obstacle control module is used for instantly changing the running height of a single wheel of the vehicle to be tested, so that the situation that the wheel meets an obstacle, particularly the situation that the front wheel contacts the obstacle, can be well simulated.
Furthermore, the barrier control module is used for repeatedly and randomly changing the running height of any wheel of the vehicle to be tested, and when the height of any wheel is randomly changed, the wheel runs on a bumpy road section, so that the diversity of the simulation environment of the automatic vehicle testing system is enhanced.
Furthermore, the road condition control unit further comprises a brake simulation module, wherein the brake simulation module is used for simulating wheel braking and measuring the sliding distance required by the wheel braking.
Further, the measurement method of the brake simulation module comprises the following steps:
s1, immediately braking a testing device when a vehicle to be tested is in a simulated driving state;
s2, recording a rotating angle theta when a wheel of a vehicle to be tested and the testing device rub against each other until the vehicle stops;
and S3, calculating the total arc length of the wheel rotation by using a formula l ═ theta x r, namely the wheel braking distance, wherein r is the radius of the edge of the wheel. The normal braking process is that the wheels stop rotating and rub the road surface, the method is that the road surface stops rotating and the wheels rotate relatively to generate friction, and the simulation process of the method is almost equivalent to the normal braking process because the vehicle body is fixed on the testing device.
Further, the automatic driving unit comprises a driving module, and the driving module is used for receiving the instruction of the control unit and controlling the running state of the vehicle to be tested.
Furthermore, the control unit comprises a display module, a data acquisition module and a touch module, the data acquisition module is used for acquiring states of vehicles to be tested under various simulation conditions, the display module is used for displaying the states of the road condition control unit, the automatic driving unit and the vehicles to be tested, the touch module is used for controlling the road condition control unit and the automatic driving unit by combining with the display module, and the display module and the touch module are connected with a touch screen together.
Furthermore, the control unit further comprises a locking module, the locking module locks the touch module when receiving a specified instruction, and the road condition control unit and the automatic driving unit cannot be controlled after the touch module is locked. Can be used for advanced engineers to prevent unexpected problems caused by random touch of novices.
Another object of the present invention is to provide a readable storage medium using the above automatic vehicle testing system.
The invention also provides a testing device adopting the vehicle automatic testing system or the readable storage medium, and the testing device can be a chassis dynamometer or any other testing device for testing the performance of the vehicle.
The beneficial effects of the invention at least comprise:
(1) the automatic driving unit is used for controlling the vehicle, manual work and robot are not needed for controlling parts in the vehicle, the testing cost is reduced, the automatic driving unit does not need to directly contact a steering wheel, an accelerator or a brake, and the influence of errors of parts in the vehicle on road condition testing of wheels is reduced;
(2) the barrier control module can simulate the situation that a single wheel encounters a barrier and can also simulate a bumpy road section;
(3) the brake simulation module can simulate wheel braking and calculate the braking distance required by the wheel braking;
(4) the locking module can prevent a new person from touching the operation interface.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic connection diagram of an automatic vehicle test system according to a first embodiment of the present invention;
fig. 2 is a schematic diagram showing connection of modules of the automatic vehicle testing system according to the first embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must be in a particular orientation, constructed or operated in a particular manner, and is not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a first embodiment of the present invention provides an automatic vehicle testing system, which includes:
the road condition control unit 1 is used for controlling the simulated road condition of the testing device, and comprises simulated ground friction and barriers;
the automatic driving unit 2 is used for controlling the steering, the speed and the braking force of front wheels of the vehicle to be tested, and is a controller;
and the control unit 3 is used for collecting and displaying the running states of the road condition control unit and the automatic driving unit, changing the running states of the road condition control unit and the automatic driving unit by receiving a control instruction, and collecting corresponding running data of the vehicle.
Compared with the prior art, the invention has the advantages that: the automatic driving unit 2 is arranged, manual and robot control of parts in the vehicle is not needed, when the automatic driving unit 2 is connected with a steering gear, an engine and a brake, direct contact with a steering wheel, an accelerator or a brake is not needed, and influence of errors of parts in the vehicle on road condition testing of wheels is reduced.
Referring to fig. 2, the road condition control unit 1 includes a friction control module and an obstacle control module, the friction control module is used for controlling the running resistance of the vehicle to be tested, and the obstacle control module is used for changing the running height of the wheels of the vehicle to be tested, so that the state of the wheels encountering an obstacle can be simulated.
In the embodiment, the obstacle control module is used for instantly changing the running height of a single wheel of the vehicle to be tested, so that the condition that the wheel meets an obstacle, particularly the condition that the front wheel contacts the obstacle, can be well simulated.
In other embodiments, the obstacle control module may also be configured to repeatedly and randomly change the driving height of any wheel of the vehicle to be tested, and when the height of any wheel is randomly changed, the wheel is equivalent to a bumpy road section, so that the variety of simulated environments of the automatic vehicle testing system is enhanced.
In addition, the road condition control unit 1 further comprises a brake simulation module, wherein the brake simulation module is used for simulating wheel braking and measuring the sliding distance required by the wheel braking.
The measuring method of the brake simulation module comprises the following steps:
s1, immediately braking a testing device when a vehicle to be tested is in a simulated driving state;
s2, recording a rotating angle theta when a vehicle wheel to be tested and the testing device rub against each other until the vehicle wheel stops;
and S3, calculating the total arc length of the wheel rotation by using a formula l ═ theta x r, namely the wheel braking distance, wherein r is the radius of the edge of the wheel.
In the normal braking process, the wheels stop rotating and rub the road surface, in the invention, the road surface stops rotating relative to the wheels to generate friction, and the process is simple friction between the wheels and the road surface because the vehicle body is fixed on the testing device and can not displace relative to the testing device, so the simulation process of the method is almost equivalent to the normal braking process.
The automatic driving unit 2 comprises a driving module, and the driving module is used for receiving the instruction of the control unit 3 and controlling the running state of the vehicle to be tested.
The control unit 3 comprises a display module, a data acquisition module and a touch module, the data acquisition module is used for acquiring states of vehicles to be tested under various simulation conditions, the display module is used for displaying states of the road condition control unit, the automatic driving unit and the vehicles to be tested, the touch module is used for combining the display module to control the road condition control unit and the automatic driving unit, and the display module and the touch module are connected with a touch screen together. In other embodiments, the display module and the touch module may also be connected to the display screen and the touch key, respectively.
In addition, the control unit 3 further includes a locking module, the locking module locks the touch module when receiving a specified instruction, and the road condition control unit and the automatic driving unit cannot be controlled after the touch module is locked. The designated instruction may be a gesture operation on the touch screen, or may be an entity button or switch disposed on the touch screen. This design can be used by advanced engineers to prevent unpredictable problems caused by casual touch by novices.
A second embodiment of the present invention proposes a readable storage medium employing the above-described automatic vehicle test system.
A third embodiment of the present invention provides a testing apparatus using the above vehicle automatic testing system or readable storage medium, which may be a chassis dynamometer or any other testing apparatus for testing vehicle performance.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. An automatic vehicle testing system, comprising:
the road condition control unit is used for controlling the simulated road condition of the testing device and comprises simulated ground friction and barriers, the road condition control unit comprises a friction control module and a barrier control module, the friction control module is used for controlling the running resistance of the vehicle to be tested, the barrier control module is used for changing the running height of the wheels of the vehicle to be tested, and the barrier control module is used for instantly changing the running height of a single wheel of the vehicle to be tested or repeatedly and randomly changing the running height of any wheel of the vehicle to be tested;
the automatic driving unit is used for controlling the steering, the speed and the braking force of front wheels of the vehicle to be tested, the automatic driving unit is a controller, the controller does not need manual work and a robot to control parts in the vehicle, and the automatic driving unit is connected with the steering gear, the engine and the brake and does not need to directly contact a steering wheel, an accelerator or a brake;
and the control unit is used for collecting and displaying the running states of the road condition control unit and the automatic driving unit, changing the running states of the road condition control unit and the automatic driving unit by receiving a control instruction, and acquiring corresponding driving data of the vehicle.
2. The automatic vehicle testing system of claim 1, wherein the road condition control unit further comprises a brake simulation module, and the brake simulation module is configured to simulate wheel braking and measure a sliding distance required by the wheel braking.
3. The automatic vehicle testing system of claim 1, wherein the automatic driving unit comprises a driving module, and the driving module is used for receiving the instruction of the control unit to control the running state of the vehicle to be tested.
4. The automatic vehicle testing system of claim 1, wherein the control unit comprises a display module, a data acquisition module and a touch module, the data acquisition module is used for acquiring states of vehicles to be tested under various simulation conditions, the display module is used for displaying states of the road condition control unit, the automatic driving unit and the vehicles to be tested, the touch module is used for controlling the road condition control unit and the automatic driving unit in combination with the display module, and the display module and the touch module are connected with a touch screen together.
5. The automatic vehicle testing system of claim 4, wherein the control unit further comprises a locking module, the locking module locks the touch module when receiving a specified instruction, and the road condition control unit and the automatic driving unit cannot be controlled after the touch module is locked, so that a senior engineer can prevent unpredictable problems caused by random touch of a novice.
6. The method for measuring a wheel braking required sliding distance of an automatic test system for vehicles according to claim 2, characterized by comprising the steps of:
s1, immediately braking a testing device when a vehicle to be tested is in a simulated driving state;
s2, recording a rotating angle theta when a wheel of a vehicle to be tested and the testing device rub against each other until the vehicle stops;
and S3, calculating the total arc length of the wheel rotation by using a formula l ═ theta x r, namely the wheel braking distance, wherein r is the radius of the edge of the wheel.
7. A test apparatus characterized by comprising the automatic vehicle test system according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810845143.0A CN108918160B (en) | 2018-07-27 | 2018-07-27 | Vehicle automatic test system, readable storage medium and test device |
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| CN201810845143.0A CN108918160B (en) | 2018-07-27 | 2018-07-27 | Vehicle automatic test system, readable storage medium and test device |
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| CN108918160B true CN108918160B (en) | 2020-09-01 |
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| CN110208012B (en) * | 2019-05-20 | 2021-05-11 | 中国第一汽车股份有限公司 | Active braking control method for drag chain type tackle |
| CN111366374B (en) * | 2020-03-04 | 2024-02-02 | 腾讯科技（深圳）有限公司 | Vehicle testing method and device, electronic equipment and storage medium |
| CN111982150A (en) * | 2020-08-26 | 2020-11-24 | 广州小鹏汽车科技有限公司 | Sliding distance testing method and device, vehicle and storage medium |
| CN114018593B (en) * | 2021-11-09 | 2023-12-22 | 北京阿帕科蓝科技有限公司 | Electric bicycle detection system and method |
| CN117589476B (en) * | 2024-01-18 | 2024-03-19 | 理工雷科电子(天津)有限公司 | Simulation test system for intelligent driving |
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| CN101738320B (en) * | 2008-11-06 | 2012-02-08 | 东风电动车辆股份有限公司 | Hybrid vehicle powertrain test system capable of simulating working condition and inertia |
| CN102507250B (en) * | 2011-11-15 | 2014-06-25 | 江苏大学 | Outdoor runway performance testing ground for combine harvester |
| JP6164465B2 (en) * | 2013-04-26 | 2017-07-19 | 株式会社ジェイテクト | Motion control method and vehicle test system for driving simulator |
| CN104677645A (en) * | 2015-02-13 | 2015-06-03 | 郑州宇通客车股份有限公司 | Test stand for power systems of automobiles, and automatic test method of working conditions |
| CN105352741B (en) * | 2015-11-16 | 2019-02-22 | 重庆交通大学 | Brake performance evaluation method and system based on virtual road load-up condition |
| CN107870091A (en) * | 2017-09-20 | 2018-04-03 | 简式国际汽车设计（北京）有限公司 | A kind of electric automobile Performance Test System and method |
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