DE102022107804A1 - POSITIONING AID FOR A MOTOR VEHICLE TEST BENCH - Google Patents

Abstract

A positioning aid is provided for a motor vehicle test bench for testing the driving assistance system of an automated motor vehicle, the positioning aid having a first template which has a first pattern for color marking a surface and an adjustment marking for a second template.

Description

The present disclosure relates to a positioning aid for a motor vehicle test bench for testing driving assistance systems of an automated motor vehicle, a method for producing such a positioning aid and the use of such a positioning aid when testing a driving assistance system of an automated motor vehicle.

In modern motor vehicles, especially automobiles, driver assistance systems known as parking distance control (PDC) are increasingly being installed, which are intended to make parking the motor vehicle easier, especially in tight spaces.

For this purpose, ultrasound-based systems are known from the prior art. These systems work with ultrasonic sensors that are integrated into a front and/or rear bumper of the motor vehicle. A distinction is made between two, four, six, eight and twelve channel systems, which means that two, four, six, eight or twelve round ultrasonic sensors are installed per bumper. These sensors send and receive ultrasonic signals and transmit the data obtained to a control device, which calculates the distance of the motor vehicle from an object reflecting the ultrasonic signal from an ultrasonic signal transit time.

Motor vehicle manufacturers are obliged to design such vehicle components in such a way that they meet relevant legal standards. In order to check whether the vehicle components meet the relevant legal standards, various tests are carried out on motor vehicle test benches as part of a so-called homologation. One of these tests is defined in UN Regulation - 158, which provides uniform provisions concerning the approval of reversing devices and motor vehicles described above with regard to the driver's attention to weaker road users behind vehicles (Uniform provisions concerning the approval of devices for reversing motion and motor vehicles with regard to the driver's awareness of vulnerable road users behind vehicles").

According to UN Regulation - 158, a motor vehicle, especially an automobile, must be positioned at a distance of 30 cm from a test area with a length of 3.5 m and a width of 1.8 m. The rear of the motor vehicle, which has a sensor system of a driving assistance system to be tested, such as a reversing camera and/or a parking distance control (PDC), faces the test area. Various standardized test specimens, so-called standard tubes or targets, are positioned at predetermined locations/positions on the test area. The predetermined positions have a predetermined or standardized longitudinal and transverse distance to the center of the motor vehicle, i.e. the positions at which the standard pipe is to be positioned for the test are specified by UN Regulation - 158.

According to the legal requirements UN ECE 158, target objects must be positioned precisely and measured. A disadvantage of the prior art is that the positioning of the pipe on the test area and relative to the motor vehicle is done manually. This requires a significant amount of time, both in positioning and documenting the test. In the case of a critical homologation, a complex list of objects is necessary instead of a simple one, which ensures a fully comprehensive examination. If necessary, it is necessary to parallelize setups and prepare several test areas very quickly. Creating these position markings by hand is extremely time-consuming, error-prone and costly. That is, there is a need for efficiency measures in terms of cost, quality, speed and reproducibility of such tests.

Against the background of this prior art, the object of the present disclosure is to provide a device and a method which are each suitable for overcoming at least the above-mentioned disadvantages of the prior art.

The task is solved by the features of the independent claim. The subclaims contain preferred developments of the invention.

The task is then solved by a positioning aid for a motor vehicle test bench for testing driving assistance systems of an automated motor vehicle.

The positioning aid has a first template which has a first pattern for color marking a surface and an adjustment marking for a second template.

In other words, a device is provided which allows a user of the device to quickly, easily and precisely create a predetermined pattern, that is, the pattern formed in the first stencil, using a colorant, for example using a spray paint and/or a paint roller , to be transferred to a surface on which the first stencil is located. Under color marking This can be understood as a permanent or temporary marking, e.g. washable with water, which is preferably visible to the naked eye after being applied to the substrate. The term color is to be understood broadly and includes not only the basic colors red, green, blue, cyan, magenta, yellow, white and black, but also all conceivable mixtures of these basic colors. The first template can have a rectangular shape.

The first pattern can extend over a complete area or a partial area of the first template.

The alignment marking can have one or more individual markings on or in the first template. The adjustment mark is to be applied in particular on or in an upper side of the first template, i.e. on a side facing away from the substrate. The adjustment mark can also be understood as a marking attached, in particular permanently, to the first template. The adjustment mark can be applied to the first template in or on the template during a manufacturing process described in detail below, in particular together with the pattern. Depending on the material of the first stencil, the application or attachment can include punching, lasering and/or applying a sticker. The adjustment mark is to be applied in particular in a predetermined position and shape.

Optional further developments of the positioning aid described above are described in detail below.

The positioning aid can have the second template, which has a second pattern for color marking the surface and a recess designed as a through hole. The recess may be arranged so that the first and second patterns are aligned with one another in a predetermined position when the alignment mark and the recess are aligned.

This means that the positioning aid having the first and second templates is protected as a kit of parts. This protects the spatial coexistence of the functionally coordinated individual components. However, the disclosure is not limited to this and, for example, a system can also be provided in which the second template is arranged on the first template, i.e. the two templates are in physical contact.

The second template can be arranged in the predetermined position above the first template as viewed from the ground. The top of the first template can therefore be in contact with the bottom of the second template. It is conceivable that the first and/or the second template has/have a marking that identifies the respective top and/or bottom. In this way, errors can be avoided when using the positioning aid.

The first and second patterns may at least partially overlap in the predetermined position. In other words, the first and second patterns may result in a (single) predetermined pattern. This can be used, for example, to create a multi-colored pattern. This multi-colored pattern can, for example, first be applied using the first stencil and a white color, with individual white components of the pattern created using the first stencil then being highlighted using the second stencil and a color that deviates from the white color, e.g. red.

The first template and the second template can each have a marking that enables the first template to be clearly assigned to the second template. Additionally or alternatively, the first and/or the second template can have a calibration mark. Additionally or alternatively, the first and/or the second template can have a marking for clearly identifying the respective template.

The positioning aid can have a weight for weighing down and fixing the first and/or second template. This is particularly advantageous when using the positioning aid outside of closed rooms, as it can prevent the positioning aid from slipping due to external influences, such as wind.

The first pattern can have first point-shaped recesses arranged in a grid pattern, optionally at a distance of 10 cm by 10 cm. The first pattern can have second recesses arranged in a circle around the respective first recess. The first pattern can have third recesses arranged in a square around the respective first recess. The first pattern can have fourth recesses arranged in an X-shape around the respective first recess.

The second pattern can have one, optionally two, three or more elongated recess(es) arranged parallel to one another.

The first and second patterns can complement each other in the manner described above and one in the UN ECE R. 158 (UN- Regulation No. 158 - Uniform requirements for the approval of reversing devices and motor vehicles with regard to the driver's perception of vulnerable road users behind the vehicle [2021/828] ( OJ L 184 May 25, 2021, p. 20, ELI: http://data.europa.eu/eli/reg/2021/828/oj )) shown pattern, for example the pattern shown therein in Appendix 10. Such a sample can have a base area of 0.8 m in length (measured in the longitudinal direction of the motor vehicle to be tested) and, depending on the width of the motor vehicle to be tested, a width of 1.70 m (with a motor vehicle width of 1.67 m). 1.80 m (with a vehicle width of 1.74 m). The first point-shaped recesses described above, once transferred to the ground, can form a target position of a center point of a tubular target. The second to fourth recesses described above can serve as positioning aids. The second circular recesses can thus indicate a target position of the circumference of the target. The third square recesses can run parallel to a longitudinal axis or a width direction of the motor vehicle to be tested or parallel to the outer limits of the base area. The fourth X-shaped or cross-shaped recesses can run parallel to diagonals of the square recesses. The pattern provided in the second template can be used to highlight individual parts of the first pattern in color, for example to align the motor vehicle to be tested relative to the pattern and/or to highlight individual, particularly relevant target positions of the target.

The disclosure further relates to a method for producing a positioning aid described above, the method comprising providing a plate or mat, forming, for example milling and/or cutting, the first or second pattern in the plate or mat, and measuring the pattern under predetermined environmental conditions, e.g. a predetermined temperature.

Furthermore, the disclosure relates to the use of a positioning aid described above when testing a driving assistance system of an automated motor vehicle. The use can involve applying a colored marking to a surface using the positioning aid. Additionally or alternatively, the use of the positioning aid can include checking a colored marking applied (e.g. manually) to a surface. In the latter case, the positioning aid serves as a measuring or testing device.

What has been described above with reference to the positioning aid also applies analogously to the process for producing it and its use and vice versa.

In other words and with reference to a more specific embodiment, what has been described above can be summarized as described below, which only includes a description of optional features and does not limit the disclosure.

Before carrying out a test or homologation with technical services and authorities, a test field must be defined. This is precisely described in an experimental plan and, above all, in laws. The transfer of corresponding positions must be carried out on existing and defined substrates. Rough, smooth, concrete, bitumen etc. and found to be suitable by the relevant authority representative.

To implement the disclosure, one or more CNC laser cut or CNC milled stencils are used. These stencils correspond exactly to the legal requirements and are certified by the technical service or a calibration laboratory. This can be proven by appropriate labeling.

At the time of homologation, temporary paint can be quickly applied to selected road surfaces using spray paint or paint rollers. By using several calibrated templates including calibration points, multi-colored marking can be done very quickly and accurately. The position markers can be used to precisely set up targets or create anchors for these targets.

To implement the disclosure, both a roll-up mat and a thin plate are conceivable, with a thickness of approximately 5 mm being sufficient. This plate or mat is stable in a longitudinal dimension and is processed at a predetermined temperature using a laser cutting process or CNC milling. Relevant contours are taken from the law and transferred as recesses via a CAD program. The template created in this way can be constructed in one piece or in several parts. In addition to legally compliant markings, synchronization markings and viewing holes are incorporated into the template. This ensures that the stencils are precisely aligned with each other when using multiple stencils. After the templates have been created, they must be measured under different temperatures and climatic conditions, certified and provided with a calibration sticker. Protective packaging must also be provided.

In the field, the templates must be used in such a way that the specified working range of the templates is checked using calibrated temperature and climate measurement technology. The templates are held in position using appropriate weights. Only then is the marking transferred to the floor surface using a temporary paint in one or more colors by spraying or rolling the paint. This creates a legally compliant marking for target objects that can be quickly multiplied at any time.

• 1 zeigt schematisch aus einer Draufsicht eine Positionierhilfe für einen Kraftfahrzeugprüfstand zum Prüfen von Fahrassistenzsystem eines automatisierten Kraftfahrzeugs, und
• 2 zeigt schematisch aus einer Draufsicht einzelne Merkmale bzw. Teile der Positionierhilfe aus 1 in Alleinstellung,
• 3 zeigt schematisch ein Ablaufdiagramm eines Verfahrens zur Verwendung der Positionierhilfe aus 1 bei der Prüfung des Fahrassistenzsystems des automatisierten Kraftfahrzeugs, und
• 4 zeigt schematisch ein Ablaufdiagramm eines Verfahrens zur Herstellung der Positionierhilfe aus 1.

An embodiment is described below with reference to 1 until 4 described.

• 1 shows a schematic top view of a positioning aid for a motor vehicle test stand for testing the driving assistance system of an automated motor vehicle, and
• 2 shows schematically individual features or parts of the positioning aid from a top view 1 alone,
• 3 schematically shows a flowchart of a method for using the positioning aid 1 when testing the driving assistance system of the automated motor vehicle, and
• 4 shows schematically a flowchart of a method for producing the positioning aid 1 .

In the following description of the figures, the same reference numbers are used for the same objects 1 and 2 used.

In the 1 Positioning aid 1 shown for a motor vehicle test bench (not shown) for testing the driving assistance system of an automated motor vehicle (also not shown) comprises a first template 2 and a second template 3.

The first template 2 is on an in 1 arranged on the surface or floor of the motor vehicle test bench indicated by a dashed line.

The first, rectangular template 2 includes an outer edge region 21 with four adjustment marks 23 for the second template 3 and six weights 24 for weighing down and fixing the first template 2 on or to the surface. Furthermore, the first template 2 includes a calibration mark or a calibration sticker 27 in the edge region 21, which, in addition to checking the calibration of the first template 2, enables a clear identification of the first template 2 and a clear assignment of the first template 2 to the second template 3.

In a first step S11 of using the positioning aid 1, the state of the first template 2 described above is produced, i.e. the first template 2 is placed on the surface, optionally weighted down with the weights 24 and optionally the calibration sticker 27 is checked.

The first template 2 further comprises an inner area 22, in which a first pattern 25 is provided for color marking the substrate. The inner area 22 can have a base area of 0.8 m in length (measured in the longitudinal direction of the motor vehicle to be tested) and, depending on the width of the motor vehicle to be tested, a width of 1.70 m (with a motor vehicle width of 1.67 m). or 1.80 m (for a vehicle width of 1.74 m). The first pattern 25 is in 1 only indicated and can extend in a grid pattern essentially over the entire inner region 22 of the first template 2.

The first pattern 25 is composed of individual sections or elements 26, which, when strung together, form the first pattern 25, one of these elements 26 being shown in detail on the left 2 is shown. The first pattern 25 has first point-shaped recesses 261 arranged in a grid pattern, which are arranged at a distance of 10 cm by 10 cm from one another (see also double arrows in 1 ). As further shown in particular 2 results in second recesses 262 arranged in a circle around the respective first recess 261, third recesses 263 arranged squarely around the respective first recess 261, and fourth recesses 264 arranged in an X-shape around the respective first recess 261. The recesses 261 - 264 are each designed as through holes, so that a colorant, such as spray and/or roller paint, can pass through the respective recess 261 - 264 and so the first pattern 25 can be applied to the substrate by applying the colorant to the first stencil is.

In a second step S12 of using the positioning aid 1, the colorant is applied to the first stencil 2, so that after the second step S12 of use, the first pattern is applied to the substrate.

The first point-shaped recesses 261 described above, once transferred to the ground, can form a desired position of a center point of a tubular target (not shown). The second to fourth recesses 262 - 264 described above can serve as further aid for positioning the target.

The second template 3 is in the in 1 shown condition from the subsurface seen above the first template 2, ie the second template 3 rests on an upper side of the first template 2. The second template 3 comprises a second pattern 31 for color marking the surface and four recesses 32 designed as through holes, which are arranged so that the first and second patterns 25, 31 are aligned with one another in a predetermined position when the adjustment markings 23 and the recesses 32 are brought to cover. The second pattern 31 provided in the second template 3 can be used to highlight individual parts of the first pattern 25 in color, for example to align the motor vehicle to be tested relative to the first pattern 25 and/or to highlight individual, particularly relevant target positions of the target.

Furthermore, in an edge region, the second template 2, like the first template 2, includes a calibration mark or a calibration sticker 33, which, in addition to checking the calibration of the second template 2, provides a clear identification of the second template 3 and a clear assignment of the second template 3 to the first template 2 enables. In addition, the second template 3 is also weighted with weights 34 in order to fix it relative to the first template 2.

In a third step S13 of using the positioning aid 1, the state of the second template 3 described above is produced, i.e. the second template 3 is placed on the first template 2 in such a way that the adjustment markings 23 and the recesses 32 are brought into line, optionally with the (three) weights 34 and optionally the calibration sticker 33 is checked.

In a fourth step S14 of using the positioning aid 1, the colorant is applied to the second stencil 2, so that after the fourth step S14 of use, the first pattern and the second pattern 25, 32 are applied to the substrate in a partially overlapping manner. This will be out 2 clear, in which the second pattern 31 is shown alone on the right. The second pattern 31 has three elongated recess(s) 311 arranged parallel to one another. The individual elongated recesses 311 of the second pattern 31 are at such a distance from one another (e.g. 10 cm, see above with reference to the recesses 261, in 2 indicated by the double arrows) that the third recesses 263 of a row of the first pattern 25, which are arranged squarely around the respective first recess 261, overlap with one of the respective elongated recesses 311.

It is also conceivable that the use of the positioning aid 1 only has the first and third steps S11, S13 if the marking has already been applied to the surface and the positioning aid 1 is used as a test means for the marking that has already been applied.

In 4 In addition, a flow chart of a method for producing the positioning aid 1 described above is shown, the method in a first step S21 providing a plate or mat, in a second step S22 an application, for example by laser milling and / or cutting, of the first and second Pattern 25, 31 into the plate or mat, and in a third step S23 measuring the pattern 31, 25 under predetermined environmental conditions.

Reference symbol list

1

Positioning aid

2

first template

21

Edge area

22

inner area

23

Adjustment mark

24

Weight

25

first pattern

26

an element of the first pattern

261 - 264

recesses

27

Calibration sticker

3

second template

31

second pattern

311

elongated recess

32

recess

33

Calibration sticker

34

Weights

S11 - S14

Steps of use

S21 - S23

Steps of the manufacturing process

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Non-patent literature cited

• OJ L 184 May 25, 2021, p. 20, ELI: http://data.europa.eu/eli/reg/2021/828/oj [0023]

Claims (10)

Positioning aid (1) for a motor vehicle test bench for testing the driving assistance system of an automated motor vehicle, characterized in that the positioning aid (1) has a first template (2) which has a first pattern (25) for color marking a surface and an adjustment marking (23) for a second template (3). positioning aid (1). Claim 1 , characterized in that the positioning aid (1) has the second template (3), which has a second pattern (31) for color marking the surface and a recess (32) designed as a through hole, which is arranged so that the first and the second pattern (25, 31) are aligned with one another in a predetermined position when the alignment mark (23) and the recess (32) are brought into alignment. positioning aid (1). Claim 2 , characterized in that the second template (3) is arranged in the predetermined position above the first template (2) as seen from the ground. positioning aid (1). Claim 2 or 3 , characterized in that the first and second patterns (25, 31) at least partially overlap in the predetermined position. Positioning aid (1) according to one of the Claims 1 until 4 , characterized in that: - the first template (2) and the second template (3) each have a marking which enables a clear assignment of the first template (2) to the second template (3), - the first and/or the second template (2, 3) has or have a calibration mark (27), and/or - the first and/or the second template (2, 3) has or have a marking for the clear identification of the respective template (2, 3). . exhibit. Positioning aid (1) according to one of the Claims 1 until 5 , characterized in that the positioning aid has a weight for weighing down and fixing the first and/or second template. Positioning aid (1) according to one of the Claims 1 until 6 , characterized in that the first pattern has: - first point-shaped recesses (261) arranged in a grid shape, optionally at a distance of 10 cm by 10 cm, and - optionally second recesses (262) arranged in a circle around the respective first recess (261) , - optionally third recesses (263) arranged squarely around the respective first recess (261), and - optionally fourth recesses (264) arranged in an X-shape around the respective first recess (261). Positioning aid (1) according to one of the Claims 1 until 7 , characterized in that the second pattern has one, optionally two or more, elongated recess(s) arranged parallel to one another. Method for producing a positioning aid (1) according to one of Claims 1 until 8th , characterized in that the method comprises: - providing a plate or mat, - forming the first or second pattern (25, 31) in the plate and / or mat, and - measuring the first and / or second pattern (25 , 31) under predetermined environmental conditions. Use of a positioning aid (1) according to one of the Claims 1 until 8th when testing a driving assistance system of an automated motor vehicle for applying a colored marking to a surface and/or for checking a colored marking applied to a surface.

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