Calibration device of driving assistance system

Abstract

The utility model relates to a calibration device of a driving assistance system, which is characterized in that the bottom of a base is connected with a movable seat through a telescopic piece, and the movable seat is provided with an abutting piece for abutting against a vehicle body; the base is provided with a first distance detection assembly and a second distance detection assembly which are used for being in contact with a detected sensor, and a suction cup used for being sucked to a vehicle body. During use, the length of the telescopic part is changed, so that the propping part is in contact with a vehicle body and is stably connected with the vehicle body by matching with the sucker; meanwhile, the first distance detection assembly and the second distance detection assembly are in contact with the detected sensor to obtain readings; and comparing the reading with a standard value, if the reading is within an error range, determining that the position is accurate, otherwise, determining that the position is not accurate. In the process, the telescopic piece, the abutting piece and the suction cup are used in cooperation to be fixed to a front bumper or a rear bumper or a side view mirror of a vehicle, and the device is suitable for different vehicle types and convenient to use and fix.

Description

Technical Field

[0001] The present invention relates to the technical field of driving assistance testing, and in particular to a calibration device for a driving assistance system. Background Art

[0002] Advanced Driver Assistant System (ADAS) is an active safety technology that uses various sensors installed on the vehicle to collect environmental data inside and outside the vehicle at the first time, and perform technical processing such as identification, detection and tracking of static and dynamic objects, so that the driver can be aware of possible dangers as soon as possible to attract attention and improve safety. The sensors used by ADAS mainly include cameras, radars, lasers and ultrasound, which can detect light, heat, pressure or other variables used to monitor the status of the vehicle. They are usually located in the front and rear bumpers, side mirrors, inside the steering column or on the windshield of the vehicle. During the use of the vehicle, vibration, collision, ambient temperature and humidity, etc. will cause the physical installation status of the above sensors to change, so they need to be calibrated or calibrated from time to time.

[0003] When calibrating or calibrating the above-mentioned sensors, a calibration element is usually mounted on a calibration bracket to calibrate or calibrate the sensors on the vehicle.

[0004] However, the device for calibrating the installation position of the sensor in the prior art is generally large in size. In addition, when calibrating the sensors located on the front and rear bumpers or side-view mirrors of the vehicle, it is inconvenient to fix them on the vehicle, which increases the difficulty of calibration. If image recognition technology is used for calibration, the cost will obviously increase. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a calibration device for a driving assistance system, which solves the technical problem that when calibrating sensors located on the front and rear bumpers or side-view mirrors of a vehicle, it is inconvenient to fix them on the vehicle, which increases the difficulty of calibration.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, an embodiment of the present invention provides a calibration device for a driving assistance system, comprising:

[0010] A base having a vertical plane thereon, on which a first distance detection component and a second distance detection component for contacting the sensor to be measured are arranged;

[0011] A plurality of suction cups, which are installed on the vertical plane and are used for adsorption with the vehicle body;

[0012] The movable seat is connected to the bottom of the base through a telescopic member and has a supporting member for supporting the vehicle body.

[0013] Optionally, a signal line connected to the first distance detection component and the second distance detection component is provided on a surface of the base away from the vertical plane;

[0014] A negative pressure tube connected with the suction cup is arranged on a surface of the base which is away from the vertical plane.

[0015] Optionally, the telescopic member is a spring; or,

[0016] The telescopic member comprises a plurality of rubber vertical rods.

[0017] Optionally, the supporting member includes a plurality of metal round rods perpendicular to the vertical plane.

[0018] Optionally, a coaxial electric telescopic rod is provided on the metal round rod, and the electric telescopic rod is fixedly connected to the movable seat.

[0019] Optionally, a vertical mounting groove and inclined mounting grooves located on both sides of the vertical mounting groove are provided on the vertical plane; the angle between the inclined mounting groove and the vertical mounting groove is an acute angle; the first distance detection component is located in the vertical mounting groove, and the second distance detection component is located in the inclined mounting groove;

[0020] The first distance detection assembly and the second distance detection assembly both include a sliding rheostat, and a measuring rod for contacting the sensor to be measured is provided on the slider of the sliding rheostat.

[0021] Optionally, the measuring rod is provided with an elastic member connected to the inner wall of the corresponding inclined mounting groove or the vertical mounting groove; the extending direction of the elastic member is parallel to the moving direction of the measuring rod.

[0022] (III) Beneficial effects

[0023] The beneficial effects of the present invention are as follows: a calibration device for a driving assistance system of the present invention has a base connected to a movable seat at the bottom through a telescopic member, and a supporting member for supporting a vehicle body is provided on the movable seat; a first distance detection component and a second distance detection component for contacting a sensor to be measured, and a suction cup for adsorbing the vehicle body are provided on the base; when in use, the length of the telescopic member changes so that the supporting member contacts the vehicle body and cooperates with the suction cup to stably connect with the vehicle body; at the same time, the first distance detection component and the second distance detection component contact the sensor to be measured to obtain a reading; then the reading is compared with a standard value, if it is within the error range, the position is accurate, otherwise it is inaccurate.

[0024] In the above process, the telescopic member, the supporting member and the suction cup can be used together to fix the vehicle on the front and rear bumpers or side mirrors, and can be adapted to different vehicle models, making it easy to use and fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front view schematic diagram of a calibration device for a driving assistance system of the present invention;

[0026] Figure 2 A schematic top view of a calibration device for a driver assistance system;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of a calibration device for a driving assistance system;

[0028] Figure 4 A schematic diagram of the three-dimensional structure of the calibration device of the driving assistance system from another perspective.

[0029] [Description of Reference Numerals]

[0030] 1. Base; 2. First distance detection component; 200. Sliding rheostat; 201. Measuring rod; 202. Elastic member; 3. Second distance detection component; 4. Suction cup; 5. Movable seat; 6. Telescopic member; 7. Support member; 8. Signal line; 9. Negative pressure tube; 10. Vertical mounting groove; 11. Inclined mounting groove. DETAILED DESCRIPTION

[0031] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0032] A calibration device for a driving assistance system provided in an embodiment of the present invention solves the technical problem that when calibrating sensors located on the front and rear bumpers or side mirrors of a vehicle, it is inconvenient to fix them on the vehicle, which increases the difficulty of calibration.

[0033] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. Example 1

[0034] Reference Figure 1 and Figure 4 , a calibration device for a driving assistance system, comprising:

[0035] A base 1 having a vertical plane on which a first distance detection component 2 and a second distance detection component 3 for contacting a sensor to be measured are arranged;

[0036] A plurality of suction cups 4, which are installed on a vertical plane and are used for adsorption with the vehicle body;

[0037] The movable seat 5 is connected to the bottom of the base 1 through a telescopic member 6 and has a supporting member 7 for supporting the vehicle body.

[0038] Since the bottom of the base 1 is connected to the movable seat 5 through the telescopic member 6, the movable seat 5 is provided with a supporting member 7 for supporting the vehicle body; the base 1 is provided with a first distance detection component 2 and a second distance detection component 3 for contacting the sensor to be measured, and a suction cup 4 for adsorbing the vehicle body; when in use, the length of the telescopic member 6 changes to make the supporting member 7 contact the vehicle body, and at the same time cooperate with the suction cup 4 to stably connect with the vehicle body; at the same time, the first distance detection component 2 and the second distance detection component 3 are in contact with the sensor to be measured to obtain a reading; then the reading is compared with the standard value, if it is within the error range, the position is accurate, otherwise it is inaccurate.

[0039] In the above process, the telescopic member 6, the supporting member 7 and the suction cup 4 can be used in coordination to fix the device on the front and rear bumpers or side mirrors of the vehicle, and the device is adaptable to different vehicle models, making it easy to use and fix.

[0040] It should be understood from the above that, generally, the distance between the installation position of the sensor and a certain part of the vehicle body is fixed, for example, the positions of different outer surfaces of the sensor installed on the rearview mirror and a certain part of the rearview mirror housing are fixed.

[0041] When using the above device for measurement, the abutment member 7 is abutted against the bottom edge of the rearview mirror housing, and then the housing is adsorbed using the suction cup 4, and then the first distance detection component 2 and the second distance detection component 3 are attached to the outer surface of the sensor.

[0042] Under normal circumstances, the values ​​detected by the first distance detection component 2 and the second distance detection component 3 are: taking the midpoint of the line connecting the suction cup 4 as the center of the circle, the first distance detection component 2 and the second distance detection component 3 correspond to the fitting points on the outer surface of the sensor; the distance from the center of the circle to the fitting point is the detection value, and at this time the detection value is L1; if it is L2 during the actual detection process, L2 is not equal to L1, and exceeds the allowable range, it is considered that the installation position needs to be calibrated; in this embodiment, the midpoint of the line connecting the suction cup 4 is a fixed, known and unchanging point, and the abutment member 7 and the telescopic member 6 are for the purpose of strengthening the fixation.

[0043] Furthermore, the telescopic member 6 is a spring; or, the telescopic member 6 includes a plurality of rubber vertical rods. This can achieve a clamping effect and strengthen the connection. The abutting member 7 includes a plurality of metal round rods perpendicular to the vertical plane; a coaxial electric telescopic rod is provided on the metal round rod, and the electric telescopic rod is fixedly connected to the movable seat 5.

[0044] The electric telescopic rod increases the position and range at which the supporting member 7 can contact the vehicle body, and is suitable for different detection scenarios. Example 2

[0045] To facilitate the transmission of test results and enhance the adsorption effect, the following settings are available:

[0046] A signal line 8 connected to the first distance detection component 2 and the second distance detection component 3 is provided on the side of the base 1 facing away from the vertical plane; a negative pressure tube 9 connected to the suction cup 4 is provided on the side of the base 1 facing away from the vertical plane.

[0047] Furthermore, the structures of the first distance detection component 2 and the second distance detection component 3 are described. At the same time, the accuracy of the calibration detection can be increased due to the three detection positions, so as to reduce the detection error.

[0048] Specifically:

[0049] A vertical mounting groove 10 and inclined mounting grooves 11 located on both sides of the vertical mounting groove 10 are provided on the vertical plane; the angle between the inclined mounting groove 11 and the vertical mounting groove 10 is an acute angle; the first distance detection component 2 is located in the vertical mounting groove 10, and the second distance detection component 3 is located in the inclined mounting groove 11;

[0050] The first distance detection assembly 2 and the second distance detection assembly 3 both include a sliding rheostat 200 , on the slider of which a measuring rod 201 for contacting the sensor to be measured is provided.

[0051] This embodiment utilizes the characteristics of the sliding rheostat to reflect the displacement change as a change in resistance value, thereby improving the detection accuracy and being more intuitive.

[0052] The measuring rod 201 is provided with an elastic member 202 connected to the inner wall of the corresponding inclined installation groove 11 or vertical installation groove 10; the extension direction of the elastic member 202 is parallel to the moving direction of the measuring rod 201. The use of the elastic member 202 ensures the tightness of the fitting between the measuring rod 201 and the sensor to be measured, and enables the measuring rod 201 to have an automatic reset function.

[0053] In summary, the above driver assistance system calibration device has a simple structure, a small size, a stable connection with the vehicle body, and high detection accuracy. It is also very suitable for scenarios where large-scale detection and calibration equipment is difficult to detect, such as the detection of a certain sensor in the car.

[0054] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood 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 one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A calibration device for a driving assistance system, characterized in that: It includes: A base (1) having a vertical plane thereon, on which a first distance detection component (2) and a second distance detection component (3) for contacting a sensor to be measured are provided; A plurality of suction cups (4) mounted on the vertical plane and used for adsorbing the vehicle body; The movable seat (5) is connected to the bottom of the base (1) via a telescopic member (6) and has a supporting member (7) for supporting the vehicle body.

2. The calibration device for a driving assistance system according to claim 1, characterized in that: A signal line (8) connected to the first distance detection component (2) and the second distance detection component (3) is provided on a surface of the base (1) that is away from the vertical plane; A negative pressure tube (9) connected to the suction cup (4) is provided on a surface of the base (1) that faces away from the vertical plane.

3. The calibration device for a driving assistance system according to claim 1, characterized in that: The telescopic member (6) is a spring; or, The telescopic member (6) comprises a plurality of rubber vertical rods.

4. The calibration device for a driving assistance system according to claim 1, characterized in that: The supporting member (7) comprises a plurality of metal round rods perpendicular to the vertical plane.

5. The calibration device for a driving assistance system according to claim 4, characterized in that: A coaxial electric telescopic rod is provided on the metal round rod, and the electric telescopic rod is fixedly connected to the movable seat (5).

6. The calibration device for a driving assistance system according to claim 1, characterized in that: The vertical plane is provided with a vertical mounting groove (10) and inclined mounting grooves (11) located on both sides of the vertical mounting groove (10); the angle between the inclined mounting groove (11) and the vertical mounting groove (10) is an acute angle; the first distance detection component (2) is located in the vertical mounting groove (10), and the second distance detection component (3) is located in the inclined mounting groove (11); The first distance detection component (2) and the second distance detection component (3) both comprise a sliding rheostat (200), wherein a measuring rod (201) for contacting a sensor to be measured is provided on a slider of the sliding rheostat.

7. The calibration device of the driving assistance system according to claim 6, characterized in that: The measuring rod (201) is provided with an elastic member (202) connected to the inner wall of the corresponding inclined installation groove (11) or the vertical installation groove (10); the extension direction of the elastic member (202) is parallel to the movement direction of the measuring rod (201).

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