Method for producing a measuring means having a layer composite

Abstract

The invention relates to a method for producing a measuring means having a layer composite, wherein: the conductor track layer and the isolation layer are joined together to form an initially deformable layer composite; the joining is in particular an integral joining; the layer composite is applied over a surface of a part or of the further part of the measuring means, in particular by integral bonding; and the conductor track of the conductor track layer extends in alignment with a profile of the surface at least in portions; in particular the layer composite is applied in such a way that the isolation layer isolates the conductor track layer from the surface.

Description

[0001] Method for producing a measuring device with a layer composite

[0002] The present invention relates to a method for producing a measuring device with a layered composite. Furthermore, the invention relates to a measuring device with a layered composite, wherein the layered composite comprises at least one conductor layer with at least one electrically conductive conductor track and at least one insulation layer.

[0003] Measuring instruments of the type mentioned above can be used in the examination of test objects, especially pipelines. Pipelines, especially magnetizable steel pipes, transport media such as oil, gas, especially hydrogen, water, or mixtures thereof. Over the course of such a pipeline's service life, various defects, such as wear and fatigue, can occur in its wall. One method for identifying, locating, and / or investigating such defects is the inspection of the pipeline with so-called intelligent pigs. Such pigs can have at least one measuring instrument of the type mentioned above.

[0004] The measuring instrument can use a method that takes magnetic flux density into account (Magnetic Flux Leakage / MFL method), an electromagnetic-acoustic method (Electromagnetic Acoustic Transducer / EMAT method), an eddy current measuring method (EC method), and / or an ultrasonic method (UT method). MFL methods are typically used for defects caused by corrosion. To detect cracks on the inside or outside of the test object, other non-destructive methods can be used, such as EMAT methods, in which sound waves are generated in the wall of the test object due to eddy current-induced magnetic fields, and UT methods, in which ultrasound is introduced directly into the test object. EC methods are used to examine near-surface cracks, especially smaller ones.

[0005] Such measuring devices usually consist of a layered composite with at least one conductor track layer and at least one insulation layer. The layered composite can perform functions of a conventional printed circuit board, such as electrically connecting components. A layered composite designed as a rigid printed circuit board is known from the prior art. The conductor track of the conductor track layer is usually etched from a metallic conductor material. The maximum layer thickness of the conductor track layer is limited and usually amounts to 0.018 millimeters to 0.035 millimeters. The insulation layer is made of a rigid material, such as fiber-reinforced plastic, laminated paper, or similar. The rigid shape of the printed circuit board limits the design freedom of the conductor track and the measuring device. In addition, measuring devices with such printed circuit boards can have relatively large dimensions.This runs counter to the increasing desire for miniaturization and weight reduction of measuring instruments. Furthermore, known manufacturing processes for such measuring instruments are often complex and associated with high initial costs due to relatively expensive equipment technology and long production and assembly times. The conductor track of the conductor layer can also form a coil, particularly for the contactless generation of a magnetic field in the test object.

[0006] Such a coil can be part of an EMAT transducer. In conventional measuring devices, due to the design and construction of the layered composite, there is a relatively large distance between the conductor track and the test object, which can impair the measurement quality of the measuring device.

[0007] It is therefore an object of the present invention to provide a method for producing a measuring device in which the disadvantages of the prior art are at least partially reduced. Furthermore, the object of the present invention is to provide a measuring device in which the disadvantages of the prior art are at least partially reduced.

[0008] The object is achieved by a method according to claim 1 and by a measuring device according to claim 22. Preferred developments of the invention can be found in the subclaims, the following description and the figures.

[0009] In the method according to the invention for producing a measuring device with a layered composite, conductor layer information is provided on an information carrier. The conductor layer information specifies the path of at least one conductor track of at least one conductor track layer, in particular adapted to the shape of another part of the measuring device. In addition, insulation layer information is provided on the or another information carrier. The insulation layer information specifies the shape of at least one insulation layer, in particular adapted to the path of the conductor track.

[0010] At least one conductor track layer is separated from a semi-finished conductor track, in particular a planar conductor track, with at least one electrically conductive conductor track in accordance with the conductor track information. The separation of the conductor track layer is preferably carried out by laser cutting. It is understood that a laser cutting device is used for this purpose.

[0011] At least one insulation layer is separated from a particularly planar insulating semi-finished product in accordance with the insulation layer information, wherein the separation of the insulation layer is preferably carried out by laser cutting. The same or a different laser cutting device can be used for this. The conductor track layer and the insulation layer are joined together to form an initially deformable layer composite, wherein the joining is carried out in particular with a material fit. The layer composite is applied flatly, in particular with a material fit, to a surface of the further part of the measuring device, and the at least one conductor track of the conductor track layer runs at least partially adapted to a profile of the surface. In particular, the layer composite is applied in such a way that the insulation layer insulates the conductor track layer from the surface.The measuring instrument refers in particular to a measuring sensor, a measuring transducer or a combination thereof.

[0012] A layered composite refers to a composite of several layers or plies, arranged one above the other and, in particular, parallel to each other at least in some areas. The conductor layer and the insulation layer are preferably made of different materials. At least in the area where the conductor layer and the insulation layer are in contact, the layers preferably run parallel to each other.

[0013] In this context, the term "layer" refers to both the conductor layer and the insulation layer, a discrete arrangement of conductor or insulation sections in a respective, initially common plane. After the layer composite is applied to the further part of the measuring device, the conductor or insulation sections may no longer run in a common plane but rather along a three-dimensional (outer) surface of the further part.

[0014] The layer shape does not require the conductor track or insulation layer to be formed over the entire surface and / or continuously. The conductor track and / or insulation layer can be formed over a partial surface, in particular interrupted and / or with at least one recess. "Partial surface" means that the respective layer, which has a greater width and length than height, is interrupted within its outer boundaries, viewed in the direction of its height. The provision of conductor track layer information and insulation layer information means that the respective information for separating the respective layer is available.

[0015] The conductor track path preferably adapted to the shape of the further part of the measuring device means in particular a path that follows the shape of the further part of the measuring device. The conductor track path preferably has, at least in some regions, in particular at least predominantly, the same curvature, the same deflection and / or the like as the further part of the measuring device. The conductor track path preferably reproduces the shape of the further part of the measuring device at least in some regions, in particular at least predominantly. The conductor track runs, at least in some regions, in particular at least predominantly, along the further part of the measuring device, in particular parallel to its surface, wherein the conductor track is spaced from the surface by the insulation layer. Adapting the conductor track path to the shape of the further part of the measuring device enables comparatively compact measuring device dimensions and simplifies the manufacture of the measuring device.

[0016] The conductor track refers, in particular, to an uninterrupted strand of an electrically conductive material. The conductor track layer can comprise several conductor tracks that are at least predominantly located in a common layer, i.e., arranged at least predominantly at the same distance from the surface of the other part of the measuring device. If the conductor tracks of a common conductor track layer overlap in sections, they are insulated from each other, in particular, at their overlapping sections.

[0017] The conductor track preferably runs in a meandering and / or helical shape, viewed in a direction perpendicular to the surface of the further part and perpendicular to the layers. The one or more conductor tracks in particular comprise several conductor track sections running parallel to one another. This makes it easy to produce a conductor track that forms a coil.

[0018] The shape of the insulation layer, which is preferably adapted to the shape of the conductor track, means, on the one hand, that the insulation layer runs at least partially, in particular at least predominantly, parallel to the conductor track and thus also parallel to the surface of the further part of the measuring device.

[0019] In the case of a plurality of insulation layers and a plurality of conductor track layers, the insulation layer arranged closest to the further part of the measuring device preferably insulates the conductor track layer adjacent to it relative to the surface of the further part. Each further insulation layer insulates a further conductor track layer from the conductor track layer closer to it relative to the further part of the measuring device. In the case of a plurality of insulation layers, the adaptation of the shape of the insulation layer to the course of the conductor track means an adaptation to a course of the conductor track layer adjacent in the direction of the surface of the further part. The insulation layer can also, in particular, be designed exclusively as an adhesive layer. This simplifies the attachment of the insulation layer itself as well as of the layer composite. For example,the layer composite is attached to the further part of the measuring device and / or to further layers of the layer composite via the adhesive layer.

[0020] In addition, the insulation layer can cover the entire conductor layer or only a portion of the conductor layer, viewed in its vertical direction, i.e., perpendicular to the surface of the rest of the measuring device. This allows for a targeted, partial insulation of the conductor layer.

[0021] Furthermore, it is possible that no insulation layer is arranged between the conductor layer and the other part of the measuring device. The conductor layer can be directly adjacent to the other part.

[0022] The conductor layer can be connected to the further part of the measuring device by means of the subsequent insulation layer, which is further away from the further part. For this purpose, this further insulation layer can be connected to the further part, at least in part, in particular by a material bond. A material bond can, in turn, be achieved by means of an adhesive layer and / or an adhesive connection of the insulation layer itself, for example, by at least partial melting.In one embodiment of the invention, at least one further conductor track layer, optionally with at least one additional insulation layer, can be arranged on this insulation layer, so that, viewed from the direction of the further part of the measuring means, in particular a preferably ceramic outer cover, in the area of ​​the conductor tracks, first a conductor track layer, then an insulation layer and then at least one further conductor track layer and optionally again at least one insulation layer follow one another.

[0023] The conductor layer is preferably made of a conductive material, particularly preferably silver, copper, gold, aluminum, a conductive alloy (CuCrZr), tungsten, brass (CuZn37), and / or iron. Furthermore, the conductor layer is particularly preferably made of copper, which makes it comparatively inexpensive and conductive.

[0024] The insulation layer is preferably made of an insulating material, particularly preferably a plastic material, further particularly preferably a thermoplastic, such as polyethylene (PE), polyethylene terephthalate (PET) or polyvinyl chloride (PVC), and / or an elastomer, such as silicone elastomer or ethylene-propylene copolymer.

[0025] A flat semi-finished product is understood to be one which is wider and longer than it is higher. In the method according to the invention, the height of the semi-finished product is comparatively limited, in particular only by the limitations of the laser cutting device used. In particular, the semi-finished product is designed as a strip-shaped band and / or as a foil. Thus, a conductor track semi-finished product with a height of, for example, approximately 0.3 millimeters can be easily processed into a conductor track with the same height or layer thickness. With preferred separation by laser cutting, the laser parameters must be adapted accordingly to the height of the semi-finished product and the material of the semi-finished product. If necessary, the parameters must first be determined by means of tests.

[0026] The initially deformable layer composite refers, in particular, to a layer composite that is deformable as long as it has not yet been applied to the surface of the further part of the measuring device. The layer composite can be elastically and / or plastically deformable. After the layer composite has been applied to the surface of the further part, it is, in particular, firmly bonded to the further part of the measuring device. Preferably, the layer composite is fixed after application to the surface of the further part.

[0027] In particular, the predominant part of the layer composite with its planar extension (on one side) is fixed to the other part, preferably at least 80 percent, so that in particular any unfixed parts, in particular side edges, can be better used for contacting purposes.

[0028] The deformability of the layered composite after application is preferably at least substantially dependent on the deformability of the measuring device, i.e., excluding any contact points of the layered composite or the like that intentionally protrude from the further part of the measuring device, in particular those that are not fixed thereto. Mechanical stability of the layered composite is preferably achieved by applying the layered composite to a further part of the measuring device, in particular an inherently rigid one.

[0029] The layered composite can be applied, for example, by hand or using an assembly tool. Applying it flat to the surface of the other part means attaching the layered composite to this surface with one of its flat, extended sides.

[0030] The contour of the conductor track adapted to the contour of the surface after application of the layer composite means, in particular, a contour that at least predominantly follows the shape of the surface of the further part of the measuring device. The layer composite, in particular, rests at least predominantly with one of its flat sides on the surface of the further part.

[0031] The method steps according to the invention can, if technically reasonable, also be carried out simultaneously or in a different order than listed.

[0032] The method according to the invention comprises predominantly manual steps and can thus be carried out independently of machine equipment and involves low initial costs. The method is also flexible with regard to the material of the further part of the measuring device, since, for example, in the case of a material-to-material connection between the layered composite and the further part of the measuring device, any material that can be bonded to the layered composite is suitable. With this method, a layered composite can be attached comparatively compactly and close to a surface of the further part of the measuring device, and, in particular, a high conductor layer thickness can be produced.Thus, by means of the measuring device produced according to the invention, for example in the case of examinations of test objects in which the surface of the further part of the measuring device is arranged particularly close to the test object, a comparatively small distance between the conductor track and the test object and thus a high measurement quality can be achieved.

[0033] In a preferred embodiment of the invention, the layer composite forms an active surface of the measuring device and is applied flatly to a surface of the further part of the measuring device designed as an outer cover of a measuring device head. The active surface serves for an interaction of the measuring device with a test object. In particular, the side of the layer composite facing the further part of the measuring device forms the active surface. The outer cover refers in particular to a part of the measuring device that protects the layer composite from environmental influences, wear or the like. The outer cover is preferably made of a comparatively wear-resistant material, such as ceramic, a hardened metal and / or a metal with a wear-reducing coating. The outer cover preferably forms a measuring device head, in particular a sensor head or a transmitter head.This allows the composite layer, especially the conductor track, to be positioned relatively close to the test object during an inspection or similar, thus achieving high measurement quality. This is especially true for measuring or test heads that have a curved, preferably partially round or rounded outer surface.

[0034] In a further preferred embodiment of the invention, a conductor track layer with at least one flat conductor track is separated from the conductor track semi-finished product. A flat design means in particular a greater cross-section of the conductor track parallel, i.e. along its width and length, than perpendicular, i.e. along its height, to the surface of the further part of the measuring device. The conductor track preferably has a non-circular, in particular rectangular, cross-section. With a preferably flat conductor track semi-finished product, the conductor track can thus be produced by separating in a simple manner, in particular without post-processing. Due to the flat design, a surface of the conductor track facing the surface of the further part of the measuring device is relatively large, so that an effective active area of ​​the measuring device is also comparatively large.Furthermore, the layer composite is comparatively compact, particularly perpendicular to the surface of the other part, which also makes the measuring instrument compact.

[0035] Preferably, an insulation layer comprising a plurality of insulation layer components, in particular insulating tracks, is separated from the insulation semi-finished product. The insulation layer can comprise individual insulation layer components, in particular insulating tracks, for insulating the conductor track at least in sections. The insulation layer components can be formed without contact with one another. The insulation layer is thus designed to be particularly material-efficient.

[0036] In addition, recesses in the insulation layer, where the conductor layer is not insulated, allow for through-holes between multiple conductor layers, i.e., intentional contact between multiple conductor layers. Furthermore, the recesses promote a preferential plastic deformation of the additional conductor track, preferably present, toward the surface of the additional part of the measuring device in the region of these recesses, regardless of any optional through-holes.

[0037] In a preferred embodiment, at least one conductor track is plastically deformed during application of the layered composite to the surface of the further part of the measuring device in order to adapt the course of the conductor track to the course of the surface. This can be done, for example, by hand and / or using an assembly tool, such as a squeegee. Thus, the layered composite can be easily adapted to an uneven surface of the further part. Complex conductor track courses can be arranged compactly on the further part of the measuring device. The dimensions of the measuring device are increased only minimally, namely in the circumferential direction by the height of the layered composite.

[0038] Preferably, the course of the conductor track and a course of the insulation layer are each initially three-dimensional, and from this, cutting information with a two-dimensional course is derived. The three-dimensional course in each case means a course that does not lie solely in one plane. The three-dimensional course can be created as a 3D model, for example using a CAD program, in particular adapted to the surface of the further part of the measuring device. To separate the layers from their respective semi-finished product, a two-dimensional course is advantageous in each case in order to carry out the separation using a two-dimensional process. The two-dimensional course can, for example, be a development of three-dimensional strands in which bends, kinks or the like are developed on one plane. This enables easier processing of three-dimensional courses and easier joining of the layers.

[0039] Preferably, the cutting information is transmitted to a cutting device. By means of the cutting device, which is particularly designed as a laser cutting device, the respective layer can be separated from its respective semi-finished product in a simple manner and with increased precision, in particular by means of laser cutting.

[0040] In a preferred embodiment, a semi-finished conductor track scrap is removed. The removal of the semi-finished conductor track scrap occurs in particular after the conductor track layer has been separated from the semi-finished conductor track, and in particular before the layers are joined together to form the layered composite. The semi-finished conductor track scrap is preferably detached from the conductor track layer. Thus, after the layers have been joined together, no semi-finished conductor track scrap remains in the layered composite.

[0041] In a further preferred embodiment, a waste piece of the insulation semi-finished product is removed. The removal of the waste piece of the insulation semi-finished product occurs in particular after the insulation layer has been separated from the insulation semi-finished product and in particular before the layers are joined together to form the layered composite. The waste piece of the insulation semi-finished product is preferably detached from the insulation layer. Thus, after the layers have been joined together, no waste piece of the insulation semi-finished product remains in the layered composite.

[0042] Preferably, the separation of the conductor layer and / or the insulation layer from the conductor semi-finished product or insulation semi-finished product takes place without severing a carrier layer supporting the conductor layer or insulation layer. The carrier layer, which is preferably attached to the conductor layer or insulation layer and supports the conductor layer or insulation layer, is also referred to as a "liner." After the conductor layer or insulation layer has been separated from the respective semi-finished product, the uncut carrier layer continues to hold the conductor layer or insulation layer together. This partial separation is also referred to as "kiss cutting." This improves the accuracy and handleability of the conductor layer or insulation layer.

[0043] In a preferred embodiment, after the conductor track layer and the insulation layer have been joined to form a layer composite, at least one region of the insulation layer is separated according to the insulation layer information, in particular by laser cutting and in particular using a detection device for detecting a position of the conductor track. The detection device can be designed, for example, as an optical detection device for localizing the conductor track, for example by means of a camera. The detection device is used, in particular, to detect the position of the conductor track in order to be able to distinguish the regions on the conductor track required for insulation from the regions away from the conductor track that are not required for insulation. The separation after the layers have been joined together takes place as an alternative or in addition to the separation of the insulation layer before the layers are joined to form the layer composite.In particular, after separation, any insulation layer waste is removed, so that no insulation layer waste remains in the layer composite. Separating after joining has advantages in terms of the positioning accuracy of the insulation layer relative to the conductor track, as alignment is no longer necessary.

[0044] Preferably, the conductor track layer and the insulation layer are combined with at least one further conductor track layer and at least one further insulation layer to form an initially deformable layered composite, wherein the further insulation layer insulates the conductor track layer from the further conductor track layer. The layered composite then has at least two conductor track layers and at least two insulation layers. The layers are in particular always arranged alternately, so that one conductor track layer is followed by an insulation layer. Preferably, the conductor track of one of the conductor track layers is arranged to run at least predominantly transversely, i.e. obliquely or vertically, to the conductor track of another of the conductor track layers, viewed in a direction perpendicular to the surface of the further part. In particular, the conductor tracks of different conductor track layers cross one another.This allows a measuring instrument to be produced with greater accuracy and functionality.

[0045] In a preferred embodiment, the layer composite is pressurized to improve the bonding of the layers. The pressurization occurs in particular after at least two layers have been joined to form the layer composite and before the layer composite is applied to the other part of the measuring device. Pressurization means exerting pressure on at least one layer to improve the bonding of this layer to at least one further layer. In a layer composite with more than two layers, the last layer added is pressurized, in particular after each further layer has been added. For this purpose, the layer can be pressed onto the already joined layers of the layer composite. It is advantageous if at least one conductor track layer has a carrier layer that protects the conductor track layer from damage when pressure is applied.The pressure can be applied by hand, using a tool such as a squeegee, and / or mechanically, such as using a pressure chamber. In a further preferred embodiment, the conductor track layer is or will be connected at least temporarily and / or at least partially to a transfer layer carrying the conductor track layer. In the case of a conductor track layer that is or will be connected to a carrier layer, there is usually an adhesive layer between the conductor track layer and the carrier layer. This adhesive layer is inaccessible due to the carrier layer. In order to still be able to use the adhesive layer to connect the conductor track layer to the insulation layer, a transfer layer can be used. For this purpose, the transfer layer is applied to the conductor track layer, in particular on the side of the conductor track layer facing away from the carrier layer.The carrier layer can then be separated from the conductor layer, and the conductor layer can be bonded to the insulation layer using the adhesive layer. The transfer layer is then either removed or used as an additional insulation layer in the composite layer.

[0046] Preferably, at least two layers of the layer composite are aligned with each other during assembly. The position of the layers relative to each other is specified in the conductor track layer information and / or insulation layer information, in particular before the respective layer is separated from its respective semi-finished product. Alignment is carried out in particular by means of alignment means. The layers preferably each have at least one first alignment means, such as a recess, which interacts with at least one second alignment means, such as a centering pin, centering dome, or the like. The first alignment means, which is particularly designed as a recess, is preferably formed during the separation of the respective layer, in particular likewise by separation. In the case of separation carried out by laser cutting, particularly precise separation of the first alignment means is possible, which is advantageous for precise alignment of the layers with respect to one another.

[0047] A more precise positioning of the layer composite relative to the further part of the measuring device is preferably achieved by aligning the layer composite relative to the further part of the measuring device when it is applied to the further part of the measuring device. The position of the layer composite relative to the further part of the measuring device is specified in particular in the conductor track layer information and / or insulation layer information. The further part of the measuring device preferably has alignment means, in particular the preferably present second alignment means, which interact with alignment means of the layer composite, in particular the preferably present first alignment means. The alignment means of the further part of the measuring device are preferably detachable so that they can be removed after the layer composite has been applied. The measuring device is thus particularly compact.

[0048] Preferably, in order to apply the layer composite to the further part of the measuring device, a connecting layer is or will be applied to the further part of the measuring device or to the layer composite. The connecting layer is in particular designed as an adhesive layer. The preferably material-to-material connection of the layer composite to the further part of the measuring device preferably takes place by means of a connecting layer in the form of an adhesive layer between the layer composite and the further part of the measuring device. The connecting layer is preferably already applied to the insulation semi-finished product and / or conductor track semi-finished product, in particular over its entire surface. The connecting layer preferably connects the layer composite to the further part of the measuring device over its entire surface, that is to say in particular over an entire surface-extending side of the layer composite.The connecting layer preferably runs parallel to the layers of the composite layer and the surface of the other part of the measuring device. This allows for a simple connection between the composite layer and the other part of the measuring device, especially if the connecting layer has already been applied to at least one of the semi-finished products.

[0049] The preferably material-to-material joining of the layers to form the composite layer is preferably carried out using a connecting layer, particularly in the form of an adhesive layer. This allows the layers to be joined in a simple and compact manner.

[0050] In a preferred embodiment of the invention, the measuring means is pressurized to reduce cavities in the layered composite and / or cavities between the further part of the measuring means and the layered composite. In particular, the entire measuring means is pressurized. The pressurization takes place in particular by means of a pressure chamber. The pressurization presses the layers against one another and against the further part of the measuring means. The measuring means, in particular the layered composite, is in particular compressed. During the pressurization, preferably at least one conductor track, in particular a further conductor track of one of the preferably present further conductor track layers, is plastically deformed. The plastic deformation takes place in the direction of the surface of the further part of the measuring means.After deformation of the additional conductor track, it has a smaller distance from the surface of the additional part of the measuring device in some areas, particularly in areas that do not overlap the adjacent conductor track closer to the additional part of the measuring device, in particular the same distance relative to the adjacent conductor track. This allows for compact measuring device dimensions and improved connection between the layers and the layer composite to the additional part of the measuring device. Furthermore, the smaller distance between the additional conductor track and the test object to be inspected in some areas is beneficial for the measuring device's measurement accuracy.

[0051] Preferably, a part of the layer composite is deformed so that its shape deviates from that of the other part of the measuring device. The deforming takes place in particular after the layer composite has been applied to the other part of the measuring device. The deformed part of the layer composite, in particular at least the conductor track layer, preferably extends spread apart from the other part of the measuring device. The deformed part is preferably designed as a connection point of the layer composite, in particular the conductor track layer. The connection point serves in particular for equipping the layer composite, in particular the conductor track layer, with at least one electrical and / or electronic component. In a preferred embodiment of the invention, at least one conductor track is equipped with at least one electrical or electronic component.For this purpose, the conductor track has, in particular, at least one connection point for connecting to at least one electrical and / or electronic component. Assembly preferably takes place after the layer composite has been applied to the remaining part of the measuring device. Assembly can be performed, for example, by soldering or similar means. This allows the functionality of the measuring device to be expanded in a simple and compact manner.

[0052] The layered composite preferably comprises at least two initially separate layered composite parts which are connected to one another, in particular firmly. The layered composite parts can be connected to one another before or after the layered composite has been applied to the further part of the measuring device. If the layered composite parts are connected after application, the existing layered composite can be easily expanded. The connection can be made by soldering or similar. After the connection, the connection point is in particular insulated, for example by potting with insulating material, foaming with insulating material or similar. This makes it possible to process a geometrically more complex layered composite whose parts would overlap one another in a one-piece state in a preferably used two-dimensional profile.It is also possible to process a relatively large layered composite whose dimensions, in a single piece, would exceed the working space of a preferred cutting device. The aforementioned task is also achieved by a measuring device, as already described above and below. The layered composite of the measuring device is applied flatly, in particular with a material bond, to a surface of another part of the measuring device, and the conductor track of the conductor track layer is adapted, at least in sections, to the contour of the surface. In particular, the insulation layer insulates the conductor track layer from the surface.

[0053] The measuring device according to the invention is thus relatively compact. Furthermore, the proximity of the conductor track to the effective surface of the measuring device and thus also to any test objects to be inspected is advantageous for measurement quality.

[0054] The measuring instrument is manufactured in particular using a method according to one of the embodiments described above.

[0055] The measuring device can, in particular, have one or more of the features described above in connection with the method, regardless of the method. The measuring device can also be manufactured according to the method described above, or the measuring device described below can be manufactured using the method described above.

[0056] The measuring means preferably has a surface structure on the surface of the further part, in particular with elevations, wherein the layered composite is adapted to the surface structure, in particular embedded in the surface structure. Individual sections of the layered composite preferably extend between the elevations. The elevations preferably space individual conductor track sections and / or insulation sections from one another. The conductor track sections and / or insulation sections are thus held in position and protected, for example, from damage.

[0057] In a preferred embodiment of the invention, the conductor track of the conductor track layer is flat. With a preferably flat, semi-finished conductor track, the conductor track is thus easy to manufacture. Furthermore, a surface of the conductor track facing the surface of the further part of the measuring device is relatively large, so that an effective area of ​​the measuring device is also comparatively large. Furthermore, the layer composite is comparatively compact, particularly perpendicular to the surface of the further part.

[0058] In a further preferred embodiment, the insulation layer is formed from a plurality of insulation layer parts, in particular insulating tracks, each of which insulates the conductor track in sections. This makes the insulation layer particularly material-efficient. Furthermore, preferably recesses in the insulation layer or gaps between the insulation layer parts promote plastic deformability of the preferably present further conductor track in the direction of the surface of the further part of the measuring device. Preferably, the layer composite has at least one further conductor track layer with at least one further conductor track and at least one further insulation layer for insulating the conductor track layer from the further conductor track layer. The functionality of the measuring device is thus improved.

[0059] In a preferred embodiment, the additional conductor track is plastically deformed such that its distance from the additional part of the measuring device is at least reduced in some regions. The measuring device is, in particular, compressed. The distance of the additional conductor track from the surface of the additional part of the measuring device is preferably as large as the distance of the adjacent conductor track closer to the additional part of the measuring device from this surface. This allows for compact measuring device dimensions and an improved connection between the layers and the layer composite to the additional part of the measuring device. Furthermore, the reduced distance of the additional conductor track from the test object to be inspected in some regions is advantageous for the measuring accuracy of the measuring device.

[0060] Preferably, the further conductor track has an uneven, in particular serpentine, course when viewed parallel to the surface of the further part of the measuring device. The serpentine course means, when viewed parallel to the surface of the further part of the measuring device, a course with curves both towards and away from the further part. These curvatures alternate, in particular, periodically, as is known, for example, from a sine curve course. Those sections of the further conductor track whose distance from the surface of the further part is at least reduced, extend, in particular, into recesses or gaps in the insulation layer adjacent to the surface of the further part.

[0061] The measuring device preferably has alignment means for aligning the layer composite relative to the further part of the measuring device. In particular, the layers of the layer composite each have first alignment means, in particular formed as recesses, for more precise alignment of the layers to one another. In addition, the further part of the measuring device preferably has alignment means, in particular the preferably present second alignment means, which interact with alignment means of the layer composite, in particular the preferably present first alignment means. Thus, the layer composite is comparatively precisely aligned relative to the further part of the measuring device. This benefits, among other things, the measurement quality of the measuring device.

[0062] In a preferred embodiment, the measuring device comprises a connecting layer arranged between the layered composite and the further part of the measuring device, in particular designed as an adhesive layer. This allows for a simple connection between the layered composite and the further part of the measuring device, particularly if the connecting layer is already applied to the conductor track semi-finished product and / or the insulation semi-finished product during the production of the measuring device.

[0063] In a further preferred embodiment, a part of the layered composite, particularly designed as a connection point, runs in a different shape from the other part of the measuring device, in particular splayed therefrom. Thus, the formed part of the layered composite, in particular of the conductor track layer, can be easily used as a connection point of the layered composite, for example, for equipping the layered composite, in particular of the conductor track layer, with at least one electrical and / or electronic component.

[0064] The measuring device preferably comprises at least one electrical or electronic component in addition to the conductor track with which the conductor track is equipped, in particular at at least one connection point of the conductor track. The electrical or electronic component can be embodied as a voltage source, resistor, capacitor, coil, diode, transistor, integrated circuit, and / or the like. In particular, the component is a circuit board or other circuit carrier. Thus, the functionality of the measuring device can be achieved or expanded in a simple and compact manner.

[0065] The layered composite preferably comprises at least two layered composite parts that are temporarily separate during production of the measuring device and that are connected to one another, in particular firmly. The measuring device can thus be produced despite a geometrically complex layered composite whose parts would overlap one another in the two-dimensional configuration preferably used during production in a single-piece state. A measuring device can also be produced with a relatively large layered composite that, in a single-piece state, would exceed the working space of a cutting device preferably used during production. The layered composite is preferably applied, in particular flatly, at least in regions to a surface of the further part of the measuring device designed as the outer cover of a measuring device head. The layered composite preferably forms an active surface of the measuring device.In a further preferred embodiment of the invention, the layer composite is applied at least in regions between spacers, each of which is designed as an elevation, of the further part of the measuring means, in particular the outer cover.

[0066] Further advantages and details of the invention can be found in the following description of the figures.

[0067] The figures show schematically:

[0068] Fig. 1 is a flow chart of a method according to the invention for producing a measuring device,

[0069] Fig. 2 is a perspective view of a layer composite according to the invention,

[0070] Fig. 3 is a perspective view of a measuring device according to the invention with the layer composite according to Fig. 2,

[0071] Fig. 4 is a perspective view of another measuring device according to the invention with the layer composite according to Fig. 2,

[0072] Fig. 5 is a view of the measuring device from Fig. 4 according to direction VI-VI from Fig.

[0073] 4, Fig. 6 a view of the measuring device from Fig. 4 according to direction VIII-VII from Fig. 4,

[0074] Fig. 7 is a sectional view of part of the measuring device of Fig. 6 along line VIII-VIII of Fig. 6,

[0075] Fig. 8 is a sectional view of a conductor layer or insulation layer according to the invention,

[0076] Fig. 9 is a first sectional view of a measuring device according to the invention and

[0077] Fig. 10 is a second sectional view of the measuring device from Fig. 9.

[0078] Parts with the same or similar functions are provided with identical reference numerals where appropriate. The features and details of the invention described below may also be incorporated into the invention in combinations other than those shown in the exemplary embodiments.

[0079] Fig. 1 schematically shows the sequence of a method according to the invention for producing a measuring device 10 with a layer composite 20. In this case, conductor track layer information 30 is provided, in which the course of at least one conductor track 40 of at least one conductor track layer 50 is defined. The course and shape of the conductor track 40 are adapted to a shape of a further part 11 of the measuring device 10. For this purpose, the conductor track 40 can be constructed, for example, in a 3D model around the further part 11. In addition, insulation layer information 70 is provided on the same or a further information carrier, in which the shape of at least one insulation layer 80 is defined. The shape of the insulation layer 80 is adapted in particular to the course of the conductor track 40, i.e. is constructed as a function of the latter.At least one conductor track layer 50 with at least one electrically conductive conductor track 40 is separated from a conductor track semi-finished product 90, in particular by laser cutting, in accordance with the conductor track layer information 30. At least one insulation layer 80 is also separated from an insulation semi-finished product 100, in particular by laser cutting, in accordance with the insulation layer information 70. Subsequently, the conductor track layer 50 and the insulation layer 80 are joined together to form an initially deformable layer composite 20, in particular by means of a material bond and in particular by means of a connecting layer (not shown), preferably designed as an adhesive layer. This layer composite 20 is then applied flatly, in particular by means of a material bond, to a surface 110 of the further part 11 of the measuring device 10, and in particular in such a way that the insulation layer 80 insulates the conductor track layer 50 from the surface 110.The conductor track 40 of the conductor track layer 50 extends, at least in sections, in a manner adapted to the profile of the surface 110. In the present case, the profile of the conductor track 40 adapted to the profile of the surface 110 means that it is deflected at an edge 260 of the further part 11 according to the profile of the surface 110. Furthermore, the layer composite 20 lies directly against the surface 110 and parallel to it. The measuring device 10 is thus particularly compact and is only slightly enlarged by the layer composite 20.

[0080] When applying the layer composite 20 to the surface 110 of the measuring device 10, in the present embodiment, at least one of the conductor tracks 40 is plastically deformed to adapt the course of the conductor track 40 to the course of the surface 110. Thus, the layer composite 20 can be easily adapted to the other part 11.

[0081] In particular, the path of the conductor track 40 and the path of the insulation layer 80 are each initially three-dimensional, and cutting information with a two-dimensional path is derived from this. This is particularly advantageous if a separation method, in particular laser cutting, is used to separate the layers, in which two-dimensional cutting information can be processed more easily. If a cutting device, in particular a laser cutting device, is used, the cutting information is preferably transmitted to this cutting device.

[0082] A semi-finished conductor track waste 140 generated when separating the conductor track layer 50 and an insulation semi-finished insulation waste 150 generated when separating the insulation layer 80 are removed in particular to reduce the weight of the measuring device 10.

[0083] Alternatively or in addition to separating the insulation layer 80 before joining the layers 50, 80 to form a layer composite 20, at least a region of the insulation layer 80 can be separated according to the insulation layer information 70 after joining the layers 50, 80. This separation is again carried out in particular by laser cutting and in particular using a detection device with which a position of the conductor track 40 can be detected. As a result, aligning the layers 50, 80 with one another can be at least partially dispensed with, while still allowing a relatively precise positioning of the conductor track 40 with the insulation layer 80.

[0084] In the present exemplary embodiment, at least two layers 50, 80 of the layered composite 20 are aligned when the layers 50, 80 are joined together. In particular, the layered composite 20 is also aligned relative to the further part 11 of the measuring device 10 when the layered composite 20 is applied to the further part 11 of the measuring device 10. For this purpose, the measuring device 10 has, in particular, alignment means 210, 220 for aligning the layered composite 20 relative to the further part 11 of the measuring device 10. These can be designed, for example, as recesses and centering bolts that interact with the recesses. In the case of alignment means 210 or 220 designed as recesses, these can be easily manufactured during the separation process.

[0085] For improved fastening of the layer composite 20 on the further part 11 of the measuring device 10, a connecting layer 180 designed as an adhesive layer (see Fig. 8) is preferably arranged between the layer composite 20 and the further part 11.

[0086] For easy connection of the layered composite 20 to electrical or electronic components 190, it is advantageous if a part 21 of the layered composite 20, particularly designed as a connection point 230, runs in a different shape from the other part 11 of the measuring device 10, in particular splayed therefrom. In the present case, the part 21 of the layered composite 20 runs transversely, i.e., obliquely or perpendicularly, to the surface 110 and the remaining part of the layered composite 20.

[0087] Independently of the conductor tracks 40, 41 of the measuring device 10, the measuring device 10 is equipped with at least one electrical or electronic component 190, in particular at at least one connection point 230 of the conductor track 40, 41. This allows the functionality of the measuring device 10 to be achieved or expanded in a simple manner. The measuring device 10 is also comparatively compact.

[0088] In the case of complex conductor path layouts or comparatively large conductor path layouts, it may be advantageous for the layered composite 20 to comprise at least two layered composite parts 240, 250 that are temporarily separate during the manufacture of the measuring device 10 and are preferably firmly connected to one another, particularly after the layered composite 20 has been applied to the further part 11. The firm connection can be achieved in a simple manner, for example, by soldering.

[0089] Fig. 2 shows a section of a layered composite 20 with the plurality of conductor tracks 40. The conductor tracks 40 are insulated from further conductor tracks 41 running intersecting therewith by an insulating layer 80. In the present case, the layered composite 20 thus has two conductor track layers 50, 51. The insulating layer 80 has a plurality of insulating tracks 82, the shape and size of which are designed such that they precisely cover the conductor tracks 40 to be insulated from the further conductor tracks 41. In regions where insulation of the conductor tracks 40 from the further conductor tracks 41 is not necessary, the insulating layer 80 is excluded. This adaptation of the insulating layer 80 to the conductor tracks 40 is particularly material-efficient and promotes the deformability of the further conductor track 41, since no insulating layer 80 obstructs its shape in some regions toward the surface 110.

[0090] The conductor tracks 40, 41 of the conductor track layers 50 are flat. The flat side faces the surface 110. A conductor track height 270, i.e., an extension of the conductor track 40 in the direction 300 perpendicular to the surface 110 (see Fig. 3), is less than a respective conductor track width 280 and conductor track length 290, i.e., an extension of the conductor track 40 in the direction 310 parallel to the surface 110 (see Fig. 3). Thus, as can be seen particularly in Fig. 3, an area of ​​the conductor tracks 40, 41 facing the surface 110 is particularly large, which benefits the measurement quality of the measuring device 10.

[0091] It is possible for the layered composite 20 to have at least one further insulation layer 81 following the further conductor tracks 41, which can be followed by at least one further conductor track layer 51, always alternating with a further insulation layer 81. Thus, the layered composite 20 can be easily expanded.

[0092] When viewed in the direction 320 parallel to the surface 110, the further conductor tracks 41 each have an uneven, in particular serpentine, course. The distance from further conductor track sections 42 to the surface 110 (see Fig. 3) is at least reduced, in particular, as in the present case, the same as the distance from the conductor tracks 40 to the surface 110. Thus, an area of ​​the conductor tracks 40 facing the surface 110 can be extended by the further conductor track sections 42. Deformation of the further conductor tracks 41, in particular up to the serpentine course of the further conductor tracks 41, can be achieved by applying pressure to the layer composite 20, in particular to the measuring device 10. This can be achieved, for example, in a simple manner using a pressure chamber in which the layers 50, 80 are pressed against one another and against the further part 11 by excess pressure.

[0093] Fig. 3 shows a layer composite 20 applied to a surface 110 of the further part 11 of the measuring device 10. Typically, the side of the layer composite 20 facing the surface 110 is an insulation layer 80 (not shown). This is followed in the vertical direction 300 by a conductor track layer 50, a further insulation layer 81, and a further conductor track layer 51. In Fig. 3, it can be seen that the conductor tracks 40, 41 can have a meandering course in plan view, i.e., viewed opposite the direction 300. Thus, a relatively large surface 110 of the further part 11 can be covered with individual conductor tracks 40, 41 if necessary, as can be advantageous, for example, with coils.

[0094] Any cavities 22 in the layered composite 20 or between the further part 11 of the measuring device 10 and the layered composite 20 can be at least reduced, in particular completely eliminated, by applying pressure to the measuring device 10. The measuring device is thus particularly compact. The connection between the layers 50, 80 and between the layered composite 20 and the further part 11 is improved.

[0095] Fig. 4 shows a layer composite 20 on a surface 110 of the further part 11 of the measuring device 10. The layer composite 20 forms an active surface 120 of the measuring device 10, which is directed towards the surface 110. The further part 11 of the measuring device 10, on which the layer composite is applied flatly, also forms an outer cover of a measuring device head, in this case a sensor head. This outer cover can, for example, be a ceramic protective cover, by means of which the active surface 120 is protected, for example, from a test object to be inspected and / or environmental influences and wear. This creates, on the one hand, an advantageous proximity of the layer composite 20, in particular of the conductor tracks 40, 41, to the test object to be inspected, and, on the other hand, ensures protection of the measuring device.

[0096] In Figs. 4 to 7, it can be seen that the conductor track 40 of the layered composite 20 is adapted to the profile of the surface 110 of the further part 11 of the measuring device 10. In particular, it can be seen in Fig. 5 that the conductor track 40 and the surface 110 have the same curvature.

[0097] The further part 11 of the measuring device 10 has an uneven surface structure on its side facing the layered composite 20. On this side, the further part 11 has a plurality of elevations 330. The layered composite 20, in particular the conductor tracks 40, 41 and insulating tracks 82 of the layered composite 20, are embedded in the surface structure of the further part 11. The layered composite 20, in particular the individual tracks, are arranged in particular between the elevations 330, so that they are additionally held in position and protected by the elevations 330.

[0098] Fig. 8 shows a schematic cross-sectional view of a composite comprising several layers. A carrier layer 160 can be arranged on a conductor track layer 50 via a connecting layer 180. This carrier layer 160 is advantageous in the production of a measuring device 10 in order to hold the conductor track layer 50 together after the layer 50 has been separated from its respective semi-finished product 90 and to be able to process it more easily. In order to be able to use the connecting layer 180, which is designed in particular as an adhesive layer, to connect the layer 50 to a further layer 50, 51, 80 or 81 of the layer composite 20 or the further part 11, a transfer layer 170 is advantageous. This transfer layer 170 can in particular be applied in a material-to-material manner to the side of the layer 50 facing away from the connecting layer 180, so that the carrier layer 160 can be removed and the connecting layer 180 is exposed for further use.Alternatively or in addition to the conductor layer 50, a further conductor layer 51, an insulation layer 80 and / or a further insulation layer 81 with a carrier layer can be used.

[0099] 160 and / or transfer layer 170. If a carrier layer 160 is attached to a conductor layer 50 and / or insulation layer 80, the respective layer 50, 80 is separated from its respective semi-finished product 90, 100, in particular without severing the carrier layer 160.

[0100] The conductor layer 50 or the insulation layer 80 is at least temporarily connected to the transfer layer 170 used in particular. After removing the carrier layer 160, the transfer layer 170 can either also be removed or used as an additional insulation layer 81.

[0101] Fig. 9 and Fig. 10 show a measuring device 10, particularly designed as a sensor, in a first sectional view from the front (cf. Fig. 9) and a further sectional view obliquely from the side (cf. Fig. 10). Compared to a viewing direction in Fig. 9, the viewing direction in Fig. 10 is pivoted by 45 degrees about an axis vertical in the plane of the drawing. In other words, the cutting axis in Fig. 10 diagonally intersects the spacers present here, which have a square cross-section and are designed as an elevation 330 (analogous to the cutting plane in Fig. 7).

[0102] The measuring device 10 in the present case has an electrical connection 350, a circuit board 360 with further electrical components and an outer cover 340 arranged in particular on a measuring device head 370. A layer composite 20 with two conductor track layers 50 and an insulation layer 80 arranged at least partially between them (cf. Fig. 10) is applied to a surface 110 of the measuring device 10, in particular the outer cover 340. The layer composite 20 is applied in particular to an inner side of the outer cover 340, i.e. the side facing the interior of the measuring device 10. The insulation layer 80 is not shown in Fig. 9. The layer composite 20 forms in the present case an active surface 120 of the measuring device 10. The active surface 120 serves for an interaction of the measuring device 10 with a test object. A distance of the effective surface 120 to a test object can advantageously be kept small in the present arrangement of the layer composite 20.

[0103] As Fig. 10 particularly clearly shows, the layered composite 20 is applied at least in some regions between the spacers, formed here as elevations 330, of the further part 11 of the measuring device 10, in particular the outer cover 340. This allows the conductor tracks, in particular strip-shaped ones, to be easily positioned and held in position.

[0104] Reference numbers list

[0105] Measuring instrument 160 carrier layer

[0106] Further part of the measuring device 170 Transfer layer

[0107] Layer composite 180 connecting layer

[0108] Part of the layer composite 190 Electrical / electronic

[0109] Cavity component

[0110] Conductor layer information 200 spacing

[0111] Conductor track 210 First alignment means

[0112] Additional conductor track 220 Second alignment means

[0113] Additional conductor track sections 230 connection point

[0114] Conductor layer 240 First layer composite part

[0115] Additional conductor layer 250 First layer composite part

[0116] Insulation layer information 260 edge

[0117] Insulation layer 270 track height

[0118] Additional insulation layer 280 conductor track width

[0119] Insulating track 290 conductor track length

[0120] Semi-finished conductor track 300 Vertical direction

[0121] Insulation semi-finished product 310 Parallel direction

[0122] Surface of the further part 320 Parallel direction of the

[0123] Measuring instrument 330 survey

[0124] Effective area 340 outer cover

[0125] Insulation layer part 350 Electrical connection 140 Semi-finished conductor track waste 360 ​​Circuit board

[0126] 150 insulation semi-finished products 370 measuring device head

Claims

Claims 1 . Method for producing a measuring device (10) with a layer composite (20), characterized in that - conductor track layer information (30) is provided on an information carrier, wherein in the conductor track layer information (30) a course of at least one conductor track (40) of at least one conductor track layer (50) is defined, in particular adapted to a shape of a further part (11) of the measuring means (10), - insulation layer information (70) is provided on the or a further information carrier, wherein a shape of at least one insulation layer (80), in particular adapted to the course of the conductor track (40), is defined in the insulation layer information (70), - at least one conductor track layer (50) with at least one electrically conductive conductor track (40) is separated from a particularly planar conductor track semi-finished product (90) in accordance with the conductor track layer information (30), wherein the separation of the conductor track layer (50) is preferably carried out by means of laser cutting, - at least one insulation layer (80) is separated from a particularly planar insulation semi-finished product (100) in accordance with the insulation layer information (70), wherein the separation of the insulation layer (80) is preferably carried out by laser cutting, - the conductor layer (50) and the insulation layer (80) are joined together to form an initially deformable layer composite (20), wherein the joining takes place in particular by means of a material bond, and - the layer composite (20) is applied flatly, in particular materially, to a surface (110) of one or the further part (11) of the measuring means (10) and the conductor track (40) of the conductor track layer (50) runs at least in sections adapted to a course of the surface (110), in particular wherein the layer composite is applied in such a way that the insulation layer (80) insulates the conductor track layer (50) from the surface (110).

2. Method according to claim 1, characterized in that the layer composite (20) forms an active surface (120) of the measuring means (10) and is applied flatly to a surface (110) of the further part (11) of the measuring means (10) designed as an outer cover (340) of a measuring means head.

3. Method according to claim 1 or 2, characterized in that a conductor track layer (50) with at least one flat conductor track (40) is separated from the conductor track semi-finished product (90).

4. Method according to one of the preceding claims, characterized in that an insulation layer (80) with a plurality of insulation layer parts (130), in particular insulation tracks (82), is separated from the insulation semi-finished product (100).

5. Method according to one of the preceding claims, characterized in that at least one of the conductor tracks (40, 41) is plastically deformed during the application of the layer composite (20) on the surface (110) of the further part (11) of the measuring means (10) in order to adapt the course of the conductor track (40) to the course of the surface (110).

6. Method according to one of the preceding claims, characterized in that the course of the conductor track (40) and a course of the insulation layer (80) are each initially three-dimensional and cutting information with a two-dimensional course is derived therefrom.

7. Method according to claim 6, characterized in that the cutting information is transmitted to a cutting device.

8. Method according to one of the preceding claims, characterized in that a conductor track semi-finished product scrap (140) is removed.

9. Method according to one of the preceding claims, characterized in that an insulation semi-finished product scrap (150) is removed.

10. Method according to one of the preceding claims, characterized in that the separation of the conductor track layer (50) and / or the insulation layer (80) from the conductor track semi-finished product (90) or insulation semi-finished product (100) without cutting through a carrier layer (160) carrying the conductor layer (50) or insulation layer (80).

11. Method according to one of the preceding claims, characterized in that after the conductor track layer (50) and the insulation layer (80) have been joined together to form a layer composite (20), at least one region of the insulation layer (80) is separated in accordance with the insulation layer information (70), in particular by means of laser cutting and in particular using a detection device for detecting a position of the conductor track (40, 41).

12. Method according to one of the preceding claims, characterized in that the conductor track layer (50) and the insulation layer (80) are joined together with at least one further conductor track layer (51) and at least one further insulation layer (81) to form an initially deformable layer composite (20), wherein the further insulation layer (81) insulates the conductor track layer (50) from the further conductor track layer (51).

13. Method according to one of the preceding claims, characterized in that the layer composite (20) is subjected to pressure for improved bonding of the layers (50, 51, 80, 81) to one another.

14. Method according to one of the preceding claims, characterized in that the conductor track layer (50) is or will be connected at least temporarily to a transfer layer (170) carrying the conductor track layer (50).

15. Method according to one of the preceding claims, characterized in that at least two layers (50, 51, 80, 81) of the layer composite (20) are aligned with one another during assembly.

16. Method according to one of the preceding claims, characterized in that the layer composite (20) is aligned relative to the further part (11) of the measuring means (10) when applied to the further part (11) of the measuring means (10).

17. Method according to one of the preceding claims, characterized in that for applying the layer composite (20) on the further part (11) of the measuring means (10) a connecting layer (180) is or will be applied to the further part (11) of the measuring means (10) or the layer composite (20).

18. Method according to one of the preceding claims, characterized in that the measuring means (10) is pressurized to reduce cavities (22) of the layer composite (20) and / or cavities (22) between the further part (11) of the measuring means (10) and the layer composite (20).

19. Method according to one of the preceding claims, characterized in that a part (21) of the layer composite (20) is deformed so that it runs in a different shape to the further part (11) of the measuring means (10).

20. Method according to one of the preceding claims, characterized in that at least one conductor track (40, 41) is equipped with at least one electrical or electronic component (190).

21. Method according to one of the preceding claims, characterized in that the layer composite (20) comprises at least two initially separate layer composite parts (240, 250) which are connected to one another, in particular firmly, after the layer composite (20) has been applied to the further part (11) of the measuring means (10).

22. Measuring means (10) with a layer composite (20), wherein the layer composite (20) comprises at least one conductor track layer (50) with at least one electrically conductive conductor track (40) and at least one insulation layer (80), characterized in that the layer composite (20) is applied flatly, in particular materially, to a surface (110) of a further part (11) of the measuring means (10) and the conductor track (40) of the conductor track layer (50) is at least partially connected to a course of the surface (110) adapted, in particular wherein the insulation layer (80) insulates the conductor layer (50) from the surface (110).

23. Measuring means (10) according to claim 22, characterized in that the conductor track (40) of the conductor track layer (50) is flat.

24. Measuring means (10) according to claim 22 or claim 23, characterized in that the insulation layer (80) is formed from a plurality of insulation layer parts (130), in particular insulation tracks (82), which each insulate the conductor track (40) in sections.

25. Measuring means (10) according to one of claims 22 to 24, characterized in that the layer composite (20) has at least one further conductor track layer (51) with at least one further conductor track (41) and at least one further insulation layer (81) for insulating the conductor track layer (50) from the further conductor track layer (51).

26. Measuring means (10) according to claim 25, characterized in that the further conductor track (41) is plastically deformed in such a way that its distance (200) from the further part (11) of the measuring means (10) is at least reduced in some areas 27. Measuring means (10) according to claim 26, characterized in that the further conductor track (41) has an uneven, in particular serpentine, course when viewed parallel to the surface (110) of the further part (11) of the measuring means (10).

28. Measuring means (10) according to one of claims 22 to 27, characterized by alignment means (210, 220) for aligning the layer composite (20) relative to the further part (11) of the measuring means (10).

29. Measuring means (10) according to one of claims 22 to 28, characterized by a connecting layer (180) arranged between the layer composite (20) and the further part (11) of the measuring means (10) and designed in particular as an adhesive layer.

30. Measuring means (10) according to one of claims 22 to 29, characterized in that a part (21) of the layer composite (20), which is designed in particular as a connection point (230), runs in a manner deviating from a shape of the further part (11) of the measuring means (10), in particular spread apart therefrom.

31. Measuring means (10) according to one of claims 22 to 30, characterized by at least one electrical or electronic component (190) in addition to the conductor track (40, 41), with which the conductor track (40, 41) is equipped, in particular at at least one connection point (230) of the conductor track (40, 41).

32. Measuring means (10) according to one of claims 22 to 31, characterized in that the layer composite (20) comprises at least two layer composite parts (240, 250) which are temporarily separate during the production of the measuring means (10) and which are connected to one another, in particular firmly.

33. Measuring means (10) according to one of claims 22 to 32, characterized in that the layer composite (20) is applied at least in regions on a surface (110) of the further part (11) of the measuring means (10) designed as an outer cover (340) of a measuring means head, in particular in a planar manner.

34. Measuring means (10) according to one of claims 22 to 33, characterized in that the layer composite (20) is applied at least in regions between spacers, each designed in particular as an elevation (330), of the further part (11) of the measuring means (10), in particular the outer cover (340).

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