• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to identification feature (1), comprising a code section (3) with a longitudinal extension (4) and, normally, a width (5), wherein the longitudinal extension (10) and the width (5) span a reference plane (10). The code section (3) has in the longitudinal extent (4) juxtaposed and by a pitch (7) spaced from each other, a plurality, over the width (5) of the code section (3) extending, codes (6), wherein each code (6 ) in a normal direction to the reference plane (10) has a depth (13) with a clearance (16). The depth (13) is defined by a boundary surface (14) formed at a distance from the reference plane (10), and wherein the distance is defined by one of a plurality of discrete depth steps (15). The boundary surface (14) is at least partially reflective for electromagnetic radiation and the center distance (7) is smaller than the inside diameter (16).
    公开号:AT511033A1
    申请号:T1932011
    申请日:2011-02-14
    公开日:2012-08-15
    发明作者:
    申请人:Numtec Interstahl Gmbh；
    IPC主号:
    专利说明:

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    The invention relates to an identification feature with a code section.
    An identification feature has the task of being able to clearly identify a product to which the identification feature is attached, and it is advantageous if the identification feature is arranged on the product in such a way that it can be processed, transported or shipped as well as intended Use, not damaged. Thus, a logistics chain can be realized, where at any time, from the producer to the end user, the general cargo can be clearly identified.
    For this purpose, for example, solutions based on barcodes are known in which a bar code label is attached to the product. However, such a solution has the disadvantage that such a label is usually angeordnat about a primer, such as an adhesive layer on the product, wherein the primer can lose the adhesive force over the life cycle of the product and thus abfälit the identification feature of the product. Also, such bar code labels are very sensitive to contamination or damage to the bar code, so that a permanent readability, especially if mechanical processing steps are to be made on the product is not guaranteed.
    From the field of bar codes further embodiments are known in which the individual codes are formed from the full material of the product, for example, in which in the prototyping such a code is attached to the product. In injection molding or Druckguesverfahren, however, the formation of a unique Jdentifikations-ons feature is usually not possible because the temperatures and / or pressures required in the casting process or required from a production point of view clock cycles do not make it possible for each individual product produced an individual Barcode is formed. N2010 / 31000 • ft • t «♦ ·· ♦ ft # · *« ft · · · · · ft Φ ft -2
    In the case of all identification features with a code section, it is absolutely necessary that the position of the individual code parts, that is to say the code clock, can be determined unambiguously when the identification feature is read out. For a bar code, for example, it is known that synchronization bars are provided at the beginning and at the end, for the most part such a synchronization bar is also provided in the middle of the bar code. Particularly in the case of product production or along the production or transport chain, the orientation of the product or of the identification feature in relation to the triggering device is usually unpredictable, so that the generation of the code cycles when reading out the identification feature is of very particular importance. The code clock is generated by linear interpolation of the read route between the start and end identifier which fails when in the read range deformations of the surface on which the identification feature is attached, or if due to the local conditions when reading an unfavorable readout angle results to prevent These drawbacks often redundant readout systems are used or possibly complex alignment steps are applied to set a certain preferential orientation between cargo and readout device. However, such measures increase the installation costs and maintenance.
    Since along a production or logistics chain the read-out devices can be designed technically very different, in particular very simple design triggering devices are possible as much read-off security must be provided in the code itself, so that even with very simple readout devices a reliable readout of the identification feature is possible in particular be sure that with a very compact identification feature a very high Austeaesicherheit can be achieved.
    The object of the invention is thus to provide a production-resistant mechanical processing steps resistant or protected identification feature with a code section that allows unambiguous identification of a piece of goods from production to use as intended and further wherein readout of the Codeabschnftts increased readability is given ,
    The object of the invention is achieved by a fdentifrkationsmerkmal with a code section, which code section has a longitudinal extent and normal to a width, wherein the longitudinal extent and the width span a reference plane and N2010 / 31 ooo * »» * «· ♦ * • ♦ · a Where the code section is juxtaposed in longitudinal extension and spaced apart by a center distance, a plurality of codes extending across the width of the code section are provided having. Each code has, in a normal direction to the reference plane, a depth with a clear width, which depth is defined by a boundary surface formed at a distance from the reference plane, the distance being determined by one of a plurality of discrete depth steps. According to the invention the boundary surface is at least partially reflective of electromagnetic radiation formed and also the center distance between two adjacent codes smaller than the inside width of the code. In the preferred contactless readout of the code section by means of an optical Auslesemitteis, in particular a laser beam, it is ensured by the inventive design that by detecting and evaluating the reflected back from the depth of the code light, the code clock can be derived, further due to the inventive difference between the width and the pitch, the position of the transition between two adjacent code parts relative to the center of a code depends on the depth ratios of the adjacent codesthetes The code value representing each code is determined by the depth of the code, that is to which depth level the code is formed is.
    According to the invention, the derivative of the code clock can take place by detecting the light reflected back from the depth of the code as a brightness profile, whereby the code clock can be determined from the mostly periodic brightness variations along the longitudinal extension. According to the invention, however, it is also possible for the optical read-out means to be selected Triangulation module is formed, in particular by a laser triangulation module whereby the back-wired from the depth of the code light is detected as a distance profile and the code clock can thus be determined by evaluating the Tiefenmaxima.
    In the following, however, the detection and evaluation of reflections is understood as meaning in particular also a distance determination on the basis of a triangulation measurement.
    For synchronization of the read-out device or for determining the absolute depth ratios, a further development is advantageous according to which the code section pays out a start and end identifier. These identifiers can, for example, be designed in such a way that they protrude to the maximum depth into the basic body of the identification feature and can therefore be used for calibration purposes, since the readout device is N2010 / 31000
    Depth as the maximum depth is detected and from this the code section assigned depth steps determined. In addition to the formation of the start or end identifier as the reference code, however, it is also possible for a reflection section to be provided, so that when the identification feature is read by detecting a first reflection or a first depression below the reference plane, the start or end identifier as such is recognized, which has the advantage that the start and / or end identifier can also be used as a code and thus the available space can be better utilized.
    According to a further development, the boundary surface in cross-section forms a circle section, which boundary surface is achieved, for example, by producing the code section by means of a ball milling cutter. Since the boundary surface according to the invention is formed at least partially optically and / or high frequency reflective and further forms a semicircle in cross section, it is ensured that there is an excellent point when lighting the boundary surface, for example. By means of a laser beam, substantially independent of the Einfaiisrichtung, where the incident laser beam is completely reflected. In production progress or along the logistics chain, the product with the identification mark on the read-out device is moved past, usually the piece goods perform a translational and / or rotational movement, anyway, there is a changing angle of incidence of the read laser beam on the codes of the code section come, especially on the boundary surface. With the development according to the invention, it is now ensured that there is a reflection maximum for each code, wherein the code clock can be unambiguously derived by evaluating the detected reflection maxima. Also for a distance measurement, a world-trained Codestelie has the advantage that a semicircular boundary surface has a light-bundling characteristic and thus a large proportion of the radiated Uchtes is reflected, which improves the detection reliability.
    According to a development, the boundary surface forms a substantially V-shaped cross-section, for example as is possible by forming the code by means of a bevel cutter. Even with such a gated border area is obtained when illuminating the code parts with an optical scanning a clearly recognizable Refiexionsereignis when the scanning beam passes over the transition region between the two tendrils of the V-shaped boundary surface. N2010 / 31000
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    I · · «9 · 99 5
    Dfe aforementioned advantages of developments of the invention apply mutatis mutandis to a draw of the code section by means of a Hochfirequenzstrahls, as well as for a high-frequency beam, especially when scanning the metallic body and inventively designed boundary surfaces, clearly recognizable reflection events occur, from which in turn can clearly abieiten the code clock , In particular, there will be significant fluctuations in the reflected signal, which can be evaluated for the extraction of the code parts.
    Advantageous is a development according to which 3 to 5 depth levels are present, with 4 depth levels are preferred, which can be formed with 7 numerical digits with the preferred arrangement of 16 codes a unique serial number. Of the possible 41β uniquely different codes, however, only 10 * are used, since the remaining remaining code options are provided in the sense of a code backup as redundancy.
    According to a further development, the code section has a free-spacing region surrounding the codes at least in sections. With regard to the fastest possible and reliable detection or detection of the code section in the identification feature, it is advantageous if the code section is delimited relative to the surrounding basic body on which the identification feature is arranged. This refinement is also advantageous in that the code section is recorded by means of an image capture device in order to determine the depth of the individual codes from the acquired image by means of a bitdean analysis method. Due to the surrounding exemption range, the contour of the individual codes stands out particularly well with respect to the background, in particular when the surrounding clearing area has a particularly high contrast to the code parts, in particular to the boundary surface.
    To protect the identification mark against the surface of the component stressing effects is a development of advantage, according to which the reference plane against a, surrounding the identification feature surface of a body, staggered The reference plane determines the kieinstöglich possible depth of the code, so that code parts with this depth especially are sensitive to impacts acting on the surface of the component. Furthermore, since the value of the code list is determined by the depth, this design has the further advantage that a code with this small depth is clearly opposite to the surrounding N2010 / 31000 ··· •• ff '··· ·· • • ff '···
    The surface of the base body is usually exposed to mechanical stresses when used as intended, so that a set-back reference plane reduces the risk of damage to the codes
    To protect the identification feature against damage, it is also advantageous if the codes or the identification feature are covered by a transparent filling material. The filler material has to be transparent, in particular in the optical or high-frequency range, in order to enable readout of the codes by means of optical and / or high-frequency-based detection means. For example, in the case of optical read-out means, the filling material may appear opaque to the human eye, but an infrared laser as the triggering device may penetrate the filling material and read the codes. Thus, an education is possible in which the codestablishes are not visible to the human eye or the fdentifikationsmerkmal as such is not or only very difficult to see because it does not stand out against the environment of the component essentially, which is advantageous for safety applications is. It is also possible in a development that the filling material is designed such that a removal of the filling material, for example, to change the codes in abusive intent, is not possible without damaging the code parts, so that such a manipulation attempt is recognizable.
    Another advantage is a further development according to which the clear world, starting from the center of the code, is formed by a left and right-hand extension, wherein the left-side or right-hand extension is a function of the distance from the reference plane of this code upstream or downstream Code is. By this development, a code backup can be realized, since the boundary line of the transition from a code to the downstream code parts or from the upstream to the current code parts depends on the depth ratios of the two adjacent codes. If the downstream code parts have a larger amount of yeast, the transition section, referred to as the further limit line, will shift in the direction of the center of the current code, that is, the downstream code will have the entire clear width. If the downstream code now has a smaller depth, the cutting line will shift to the middle of the downstream code, so the outgoing code will have the clear width, but the downstream code will have a smaller clear width. The details of this shift will be discussed in detail in the following figure descriptions. N2010 / 31000 •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• In this direction is also a further development, according to which the left and right extensions along the longitudinal extension, forming a security coding. The displacement of the boundary line due to the depth relationships of the adjacent codes can now be evaluated to the effect that a code check is possible, in particular an error-recognizing or error-correcting code can be realized thereby. Also, due to contamination of the codes or due to inaccurate reading of the code, an error can creep in which can be checked or corrected by evaluating the position of the boundary line in relation to the depth ratios.
    With regard to the unambiguous traceability of a production or logistics chain, a development is advantageous according to which the codes form a unique serial number, comprising at least one serial number of a casting mold and a production time stamp. Since it is hardly possible due to the difficulties already described to auszubikien a mold to the effect that each individual piece of goods produced is automatically provided with a unique and serial serial number in particular, the identification feature of the invention has the advantage that a unique serial number of the mold together with a unique Production time stamp and possibly further features is formed. Thus, existing production systems can be easily adapted to the invention fdentiflkaü-onsmerkma! In particular, the unique Kokillennummer, which is usually changed only weekly, continue to be used, the unique and particular piece goods specific labeling is done by the inclusion of a production time stamp, so that the combination of a very precise definition and in particular traceability of the exact production time is possible ,
    To extend the piece goods marking is further provided that in the direction of the width of the code section, at least one further arrangement of longitudinally juxtaposed arranged code parts, is present logically in the longitudinal direction more Codeeabschnitla be present or can also in the direction of the width more code sections be provided. This is particularly advantageous in that several information regarding a piece goods must be attached to this. For example, in addition to a production-specific code section, a customized code section can also be arranged. N2010 / 31 ooo »· ·· * ·« · · · · · · «♦ *
    In order to ensure the highest possible read-out reliability and, in particular, code security, it is advantageous if the codes form a step-coding, in particular a forward error correction. With such a coding it can be determined how many code values, ie depth steps, the maximum change between two adjacent codes may be maximum. If ea is due to contamination or damage to the code parts to a read-out error this can be detected and also corrected with appropriate interpretation of the coding. As a matter of course and not conclusively, a Reed-Solomon Code is mentioned here.
    In a further development, it is provided that the identification feature is arranged in a section of a main body of a stick by means of a material removal method. By way of example, be mentioned here that the identification feature is milled by means of a machining process such as by milling from dam main body of the bag. Likewise, it is possible to arrange the identification feature in the base body by means of a contactless removal method, such as, for example, by means of laser beam treatment. These two methods are particularly suitable for high-strength or high-temperature resistant materials. For materials with lower strength or for thermoformable materials, for example, be provided that a stamp is pressed with an individually customizable structure of the codes in the finished piece goods. For example, by means of a hot stamp on thermoplastics.
    The invention also relates to a wheel rim in which the identification feature according to the invention is arranged. According to a development, the identification feature is arranged in the region of the contact surface, which has the advantage that in this section of a wheel rim mechanical processing steps are required only to a very limited extent, thus damage to the Identiflkationsmerkmels during the manufacturing process of the wheel rim is not given. However, the further development according to the invention also has the advantage that the identification feature is clearly recognizable even with the wheel mounted, which is advantageous over known identification features which are arranged in the region of the low bed of the wheel rim. The end customer also has the option of reading out the identfication mark, for example by photographing, and by transmitting the image to a test device, for example, retrieve production data of the wheel rim. Another advantage of such a design is that in this area of a wheel a lower risk of contamination N2010 / 31 ooo ·· ·· · · t ♦ ·
    • 9 9 9 9 9 9 9 so that even if the wheel is used for a long time, the identification mark will only slightly pollute.
    The invention is also achieved by a method for identifying a component, wherein an identification feature according to the invention is arranged on the component. In particular, the method according to the invention has the advantage that the codes of the code portion are read out contactlessly. In particular, the method comprises the following steps: detecting the electromagnetic radiation reflected from the codes and forming a depth profile; Determining the maximum depth values from the depth profile; Quantizing the determined depth values by assigning the depth values to stored depth levels; Forming a code information from the quantized depth values.
    The formation of a depth profit has the advantage that reading the code parts thus becomes largely independent of the read-out angle, since due to the inventive design of the codes, in particular the boundary surface, a clear reflection of each code can be achieved for a large width of possible scan angles and thus clearly determines a depth value in contrast to known identification methods in which the identification feature can be read only from a very limited Winkeibereich, which brought a large positioning and alignment effort in the field of automated Produktlonsstraßen, the inventive method has the advantage that with simplified read-out devices an increased read security is given. In particular, it is ensured by the inventive design that with a variety of different Auslesevorrichtun gene, as they can occur along a logistics chain, the identification feature can be reliably issued.
    A development according to which the codes are emitted by means of a directed light beam, in particular a laser beam, has the advantage that laser beams focus very well and thus can align very well with the codes, which has the advantage together with the inventive design of the identification feature in that very clear reflection events are achieved and thus a very reliable readability of the codes is given. Also, with laser beams or scanning systems based on laser beams, very high read-out speeds can be achieved, which is of particular advantage for the use of the method in a production line. N2010 / 31000 · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm · mm
    Gamäß a development, the codes are read by means of a laser triangulation module, which has the advantage that such modules are very compact and widely available and still allow reliable triangulation. In particular, a plurality of individual laser beams are directed to the codes of such a module, whereby due to the different starting points of the beams, triangulation is possible Another advantage is that with such a module directly a distance can be determined, so that from the detection profile directly determine the depth levels and thus the values of the codes.
    An advantage of the method according to the invention is also that a code clock is derived from the maximum depth values determined, for example by analyzing the detected helical distribution by means of a threshold discriminator and thus deriving a unique code clock when the discriminator responds to corresponding downstream filtering. This is in particular to the advantage that since identification features can be read out in which the code clock changes along the readout direction, for example, if the identification feature is arranged on a curved surface or if the readout device scans the identification feature at a non-optimal angle with this Training is ensured even under difficult read conditions that the codes can be read reliably. In contrast to known methods in which the code clock must usually be determined by interpolation from the detected Heiligkettssignal, the code clock can be derived directly from the determined reflection signal in the inventive method.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case in a very schematically simplified representation:
    Fig. 1, the arfindungsgemäßo identification Markmai arranged on a base body;
    Fig. 2 is a sectional view of the code section;
    3 a) to c) detailed representations of the borderline between adjacent codes as a function of the depth extension; N2010 / 31000 t * «* * · * ·« «· · · I t · · Μ ·« «· ·« # · t «-11-
    Fig. 4 is a schematic representation of the conditions when reading the code section.
    Fig. 1 shows the identification feature according to the invention! 1, which is arranged on a basic body 2 of a stacked goods. The identification feature 1 comprises a code section 3 with a longitudinal extent 4 and a width 5. In the longitudinal extent 4, a plurality of code segments 6 are arranged side by side, which are spaced apart by a center distance 7. Surrounding the code section 3, an exemption area 8 is provided, wherein according to a preferred embodiment, the free-range area 8 surrounds the entire code section 3. In a further development, however, it is also possible that this freestanding area 8 is not provided, or, for example, only along the direction of the longitudinal extent 4. In the preferred embodiment, the identification feature 1 is arranged in the material of the base body 2 by means of a material-removing method. For example, the code section 3 is formed by means of a ball milling cutter, but the release zone 8 can also be formed by means of an end mill. In particular, such a design is advantageous in that the identification feature 1 is thus virtually a part of the component and remains reliably arranged on the base body 2 when passing through the manufacturing steps in the manufacturing process or along the logistics chain and is not damaged or altered during normal use.
    2 shows a cross-section of the code section 3 of the identification feature according to the invention. The section is selected parallel to the longitudinal extension of the code section, so that the individual codes 6 are shown in frontal view. The surface 9 of the base body 2 serves as a base level for the definition of the reference plane 10, wherein this reference plane 10 may be offset by a distance 11 relative to the surface 9 of the base body 2, so that the boundary surface of those Code 6, which in relation to the reference plane 10 the have the lowest depth extension, clearly opposite to the surface 9 can be seen. Preferably, the distance 11 of the reference plane 10 from the upper surface will be 910% of the maximum depth extent 12 of the individual code parts.
    Each code 6 is characterized in that the current depth 13 of the code, which is determined from the reference plane 10 by the boundary surface 14, only one of several possible discrete depth stages 15 can form. The depth steps 15 can now be aligned linearly over the depth extension 12, but a non-linear division is also possible. N2010 / 31000 • * • ♦ • · · · · • * h · • · · # • · 4 · · Μ
    12
    The code section 3 is further characterized in that each code column has a clear width 16 and that further the individual codes are arranged offset by a pitch 7 in the longitudinal direction 4 side by side. Since according to the invention the center distance 7 is smaller than the clear width 16, a dependence of the position of the boundary line 17 between two adjacent codes 6 in relation to the respective center 24 of the code list, as a function of the ratio of the depths of the two adjacent code parts 6. Dies is explained in more detail in the following figures.
    In the preferred embodiment, the code section 3 has a start or end identifier 18, so that a triggering device can clearly identify the beginning and the end of the code section 3. In a preferred embodiment, this start or end identifier 18 will be arranged in the main body 2 up to the maximum depth extent 12 and thus defines the available depth range between the surface 9 or the reference plane 10 and the maximum depth extent 12. In FIG illustrated an embodiment in which the code section 3 has a total of 16 codes 6, each code 6 is formed in one of five possible depth stages 15. In a preferred embodiment, four depth stages 15 are provided.
    FIGS. 3 a to c each show a section of the code section 3, wherein the representation has been selected such that the course of the boundary line 17 is shown as a function of the depth step 15 of two adjacent codes 6.
    FIG. 3 a shows the situation in which two adjacent codes 6 are arranged in the main body 2 up to the same depth step 15, that is, starting from the reference plane 10 both codes 6 have the same depth extension 12. As is Mittanab-stand 7 between the two codes 8 according to the invention is smaller than the inside width 16 of each code parts, there is an overlap of the adjacent codes along a boundary line 17.1m illustrated case of the codes 6 with the same depth 12 is the position of the boundary line 17th exactly in the middle of the center distance 7. The right-hand extension 33 of the upstream code 20 is equal to the left-hand extension 34 of the downstream code tower 22nd
    Fig. 3b shows a situation in which the longitudinal extension 4 downstream code 22 has a lower depth step 15 than the upstream code 20. In particular, the upstream code parts 20 to a first depth 21 and the downstream code 22 to a second depth 23 in Basic body 2 of the identification feature N201GTC1000 «« * * • * * • • e ·· 9 6 a • e 9 9 ee • ♦ 9 9999 • φ a • 9 • 99 ** IM 9 «··· **** - 13- 1 arranged, wherein the second run 23 is lower by a depth step 15 than the first depth 21. In otherwise the same conditions regarding respect to the center distance 7 and the pleading width 16 of the codes 6 results in a shift of the boundary line 17 from the center line 24th between the two centers 19 to the downstream code 22 with the smaller second depth 23. Here, the right-hand extension 33 of the upstream code 20 by the amount of displacement 25 gr SSER than the left-side extension 34 of the downstream code 22. The size and direction of the displacement 25 may be used to secure the codes now that these two characteristics is directly related to the low levels of ratios of the two adjacent codes. In the sense of a step encoding, it can be provided that the depth of the codes, that is their code value, may only change by a certain maximum number of depth steps per code step, as a result of which erroneous readout of the codes can be detected and if necessary also corrected. Thus, a significant improvement in the accuracy of reading is achieved without requiring additional measures to be provided on the code section.
    In Fig. 3c, the conditions are similar to those in Fig. 3b dargesteJIt, but here the upstream code 20 has a lower depth extension 23 than the downstream code 22 with its depth extension 21. Due to this design, it follows that the displacement 25 of the boundary line 17 is oriented from the center line 24 against the longitudinal extension 4 in contrast to Fig. 3b here is the right-hand extension 33 of the upstream code 20 by the amount of displacement 25 Mine than the left-hand extension 34 of the downstream code 22. The extent of the displacement 25 results in turn from the ratio of the two depth extents of the codes.
    Fig. 4 shows the situation when reading the code section 3, wherein the readout is preferably carried out contactless by means of a collimated light beam, in particular a laser. In this case, a light beam or a bundle of light beams is directed to the identification feature with the code section 3 and by a relative movement between Identifikationsmeikmal and light beam, the individual codes 6 of the code section 3 are read out, the reading of the code section is described by means of a laser, it will However, it is expressly pointed out that the ratios described apply to each collimated scanning beam or to a scanning line, both in the optical and in the high-frequency wavelength range. It is synonymous whether the scanning beam is directed over the code section, or whether N2010 / 31 ooo • * • *
    • the code section passes the scanning beam. Also, it is not necessary with the identification merian according to the invention that the read-out speed along the code section 3, preferably in the direction of the longitudinal extent 4, must be constant. One of the particular advantages of the identification feature according to the invention lies in the fact that when reading the code section 3, the determination of the depth points required for the evaluation of the code section is automatically given and thus no additional effort is required to regenerate the code clock and thus the evaluation points from the acquired scanning signal ,
    The scanning of the code section 3 is preferably carried out by means of an optical scanning beam 26, which performs a relative movement along the longitudinal extension 4 of the code section 3. It is synonymous, whether the base body 2 is at rest and the scanning beam 26 ausfQhrt the relative movement, or vice versa, that the main body is moved past the stationary scanning beam.
    Since the surface of the boundary surface 14 is at least partially formed optically and / or high-frequency reflective, an incident scanning beam 27 is deflected at the boundary surface and thrown back as a reflected scanning beam 28 to a sensor 35. In the preferred embodiment, the sensor 35 is a laser triangulation sensor. The operation of such a Triangutatlonssensore is well known, will be discussed here only very roughly. From the triangulation sensor, a laser beam 26 is directed to an object and the light reflected by the object is directed by an optical system onto a detector array. Due to the geometrically predetermined conditions of the sensor structure, the point of impact of the reflected scanning beam 26 on the detector array depends on the distance between the sensor 35 and the surface 14 of the boundary surface. To clarify the measuring principle, the representation of the reflected scanning beam 26 has been greatly exaggerated, in particular due to the representation of the ratios when reading out, which is not true to scale.
    When reading along the longitudinal extent 4, the sensor 35 determines a distance profile of the code section 3 and preferably transmits it to an evaluation device 36, for example a data processing device. By evaluating the distance profile, the evaluation device 36 can determine those points along the longitudinal extent 4 at which the greatest distance between The point 29 of the greatest possible distance will each coincide with the greatest depth extent of each individual code 6, so that it can be unambiguously determined at length along of the code section 3, a quantization of the depth steps 15 must be made in order to determine the value of the respective code 3.
    The determination of the maximum distance between sensor 35 and code section 3 or code 6 has the further advantage that the code clock can also be derived therefrom. When reading a code based on a Reiativbewegung it may occur that the relative speed during reading is not constant With the code according to the invention, it is now possible without additional Synchronielerungsvorkeh-ments, such as sync digits in the code center, the position of each Code to determine exactly. Thus, the readout method is essentially independent of the speed of the relative movement, which is particularly advantageous for manually operated readout devices. This is also of particular importance for production systems, since in a running production process the relative alignment between the incident scanning beam and the code section can usually only be determined very roughly is. An identification feature which offers a very large permissible readout range therefore has very decisive advantages with respect to the reliability and readout speed of the code section. Since the code section 3 preferably has a start and / or end identifier, not shown, or also the reference plane in the course of the scan 10, the code may be quantized by taking the distance between the reference plane 10 and the maximum distance of the code location determined by the scan. determined as the depth of the code and assigned by comparison with the possible depth steps 15 of a specific depth level and thus a code value.
    As already described above, due to the inventive design of the clear width and the center distance of the codes 6 a boundary line 17 between two adjacent codes 6, wherein the position of the boundary line 17 in relation to the two center lines 24 of the adjacent code sections 6 due to the Tiefenver ratios of the adjacent code sections. For the reliability of the reading this has the further advantage that by detecting this boundary line 17 and in particular by determining the position of the boundary line, ie by determining the left and right side extension of each code, a test is possible whether the determined depths 30 and the code values determined therefrom, with which the position of the boundary line 17 resulting from the depth relationships coincide. If, for example due to contamination or due to scattering effects, an incorrect determination of the depth 30 of a code 6 results, a faulty code value is generated from this, which can be checked by evaluating the position of the boundary line 17 and optionally corrected. On N201IV31000 • · * · «• * · l ·· 16
    Details will not be discussed here, as this concerns the field of source or channel coding. In any case, by evaluating this boundary line 17, a significant increase in the reliability of the coding can be achieved without additional means having to be arranged on the identification feature or in the code section 3. The boundary line 17 can now be determined quite clearly from the reflected scanning beam 28, since it is detected at the position of the boundary line no or a much attenuated reflection. In particular, however, it comes at the transition of the incident scanning beam 27 between the two boundary surfaces 14 to a drastic change of the preferred reflection direction with a brief interruption or to a significant attenuation of reflection when the incident scanning beam 27 paeslert the boundary line 17 By evaluating the intensity of the reflected Radiation taking into account the direction of incidence, the position of the boundary line 17 can be determined very accurately.
    A similar situation arises when the code 6 has the minimum yeast, ie as close as possible to the surface Θ of the base body 2. The above-described boundary line will here be divided into two boundary edges 31 with an intermediate portion of the surface Θ. For the detection and evaluation of the code, this can be used to the effect that the boundary edge 31, as described above, can be detected by a significant intensity variation of the reflected scanning beam in combination with a change in direction of the reflected scanning beam. Bel the scanning of the surface portion between the two boundary edges 31 a largely constant distance value is detected. Only at the transition from Oberfiächenabschnitt to the next boundary surface 14, the transition described above will be repeated in reverse sequence. This detected intensity profile can now be evaluated for calibration purposes, since a constant reflection characterizes the surface 9 of the base body 2 and thus, due to this reflection value and associated therewith, a distance 32 between the detection device and the surface 9, are used to form once the reference plane 10 , as well as the other depths 15 deduce. Thus, an automatic calibration of the detection device on the Codeabschnftt 3 and the identification feature is possible without additional tools.
    Finally, it should be noted that in the differently described embodiments identical parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description N2010 / 31000 - 17- • * mutatis mutandis to the same Telle with the same reference numerals or the same Component names can be transferred. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions. All statements on value tables in the present description should be understood to include any and all subregions thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.
    The AusfDhrungsbeispiele show possible embodiments of the identification feature, which should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but also various combinations of the individual embodiments are mutually possible and this possibility of variation due to the teaching of technical action by representational Invention in the skill of those skilled in this technical field. So are all conceivable embodiments, which are possible by combinations of individual details of dargesteliten and described embodiment variant of the scope of protection.
    For the sake of order, it should finally be pointed out that in order to better understand the structure of the identification feature, these or their components have been shown partly un-scaled and / or enlarged and / or reduced in size.
    The task underlying the independent inventive solutions can be taken from the description.
    Above all, the individual embodiments shown in FIGS. 1 to 4 can form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures. N2010B1000 · * · «*« f4 · * · «*« f4 Reference symbol
    Identifier Basic body Code section Longitudinal extension Width
    code
    center distance
    Frelstetlungsbereich
    surface
    reference plane
    distance
    depth extension
    depth
    boundary surface
    depth level
    Clear width limit line
    Start or end identifier center
    Upstream code First Depth
    Downstream code Second depth midline shift
    Optical Scanning Beam Incident Scanning Beam Reflected Scanning Beam Position Depth
    boundary edge
    distance
    Right-hand extension Left-hand extension Sensor
    Evaluation device NZ010 / 31000
    权利要求:
    Claims (19)
    [1]
    Patent Abstract 1. fd signing feature (1), comprising a code section (3) with a longitudinal extent (4) and normal thereto , a board (5), wherein the longitudinal extent (10) and the width (5) span a reference plane (10), wherein the code portion (3) in the longitudinal extent (4) arranged side by side and spaced by a center distance (7), a plurality , Codes (6) extending over the width (5) of the code section (3), each code (6) having a depth (13) with a clearance (16) in a normal direction to the reference plane (10) Depth (13) is defined by a, at a distance from the reference plane (10) formed boundary surface (14), wherein the distance is determined by one of a plurality of discrete depth stages (15), characterized in that the boundary surface (14) at least in sections for electrom is designed to reflect reflective radiation and that the center distance (7) is smaller than the clear width (16)
    [2]
    2. Identification feature according to claim 1, characterized in that the code section (3) has a start and / or an end identifier (18).
    [3]
    3. Identification feature according to one of claims 1 or 2, characterized in that the boundary surface (14) forms a circular section in cross section.
    [4]
    4. Identifikationsmerkmai according to one of claims 1 to 3, characterized in that the Begrenzungsfiäche (14) forms a fm substantially V-shaped cross-section. N201Q / 31000
    [5]
    5. Identifikationsmerkmai according to one of claims 1 to 4, characterized in that 3 to 5 depth steps (15) are present, preferably 4 depth steps are available.
    [6]
    6. Identification feature according to one of claims 1 to 5, characterized in that the code section (3) aulweist, the codes (6) at least partially surrounding exemption range (8) aulweist.
    [7]
    7. Identifikationsmerkmai according to one of claims 1 to 6, characterized in that the reference plane (10) relative to a, the identification feature (1) surrounding surface (9) of a base body (2) offset (11) is arranged
    [8]
    8. Identification feature according to one of claims 1 to 7, characterized in that the codes (6) and the code section (3) are covered by a transparent Füllmateriaf.
    [9]
    9. Identification feature according to one of claims 1 to 8, wherein the light Welte, starting from the center (24) of the code (24), by a left (34) and right side (33) extension is formed, characterized in that the left-side (34) or right-side (33) extension is a function of the depth of this code upstream or nachgeiagerten code parts
    [10]
    10. Identification feature according to one of claims 1 to 9, characterized in that the left (34) and right side (33) extensions along the longitudinal extension (4), form a security coding.
    [11]
    11. identification feature according to one of claims 1 to 10, characterized in that the codes form a unique serial number, comprising at least a serial number of a mold and a production time stamp.
    [12]
    12. Identification feature according to one of claims 1 to 11, characterized in that in the direction of the width (5) of the code section (3), at least one N2010 / 31000.sup.-1. weltere arrangement, of the longitudinal direction (4) juxtaposed spaced codes (6), is present.
    [13]
    13. Identification feature according to one of claims 1 to 12, characterized in that the codes (6) form a step encoding, in particular a forward error correction.
    [14]
    14. Identlfikatlonemerkmal according to one of claims 1 to 13, characterized in that the identification feature (1) is arranged by means of a Materialabtragsverfahren on a component body. 13. A wheel rim comprising a hub with a contact surface, a plurality of spokes and a drop center, further wherein a tdentifikationsmerkmal is present, characterized in that the identification feature is designed according to one of claims 1 to 14.
    [15]
    16. Wheel rim according to claim 15, characterized in that the identification feature is arranged in the area of the contact surface.
    [16]
    17. A method for identifying a component, wherein the component an identification feature is arranged according to one of claims 1 to 14, wherein the Codeeabschnrtt the Identlfikatlonsmerkmals is read out by directing a directed electromagnetic radiation along a detection path on the individual codes of the code sections, contactless by the steps of: detecting the electromagnetic radiation reflected from the codes and forming a depth profile; Determining the maximum depth values from the depth profile; Quantizing the determined depth values by assigning the Trefenwerte to deposited depth levels; Forming a code information from the quantized depth values. N2010 / 31000

    -4-
    [17]
    18. The method according to claim 17, characterized in that the codes are read out by means of a directed light beam.
    [18]
    19. The method according to claim 18, characterized in that the codes are read out by means of a laser Triangulatlonsmoduls.
    [19]
    20. The method according to any one of claims 17 to 19, characterized in that a code clock is derived from the determined maximum depth values. NUMTEC-INTERSTAHL GmbH by AnwälteOurber & Partner Attorney at Law N2010 / 31000
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    同族专利:
    公开号 | 公开日
    AT511033B1|2013-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3141461A1|1980-10-21|1982-06-09|Deutsche Semperit GmbH, 8000 München|Marking of an article of rubber or plastic on its surface|
    GB2124967A|1982-08-04|1984-02-29|Hamilton Machinery Sales Limit|Mould identification|
    DE20012910U1|2000-07-26|2000-11-02|Merkel Gerald|Coding of scaffolding components and the like|
    DE10320383A1|2003-05-06|2004-12-02|Visolution Gmbh|Object coding for machine readable marking by stamping ring markings into object material during manufacture|FR3010932A1|2013-09-20|2015-03-27|Planas Emili Costa|METHOD OF ENGRAVING INTO THE SURFACE OF A CODES SURFACE OR PIECE OF CODES, FLASH CODE OR THE LIKE|
    DE102017218900A1|2016-10-27|2018-05-03|Sticht Technologie Gmbh|Marking of tools or workpieces|
    法律状态:
    2016-03-15| HC| Change of the firm name or firm address|Owner name: ALPINE METAL TECH GMBH, AT Effective date: 20160125 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT1932011A|AT511033B1|2011-02-14|2011-02-14|IDENTIFICATION CHARACTERISTIC WITH A CODE SECTION|AT1932011A| AT511033B1|2011-02-14|2011-02-14|IDENTIFICATION CHARACTERISTIC WITH A CODE SECTION|
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