Measured value detection device for an inductive sensor arrangement

Abstract

The invention relates to a measured value detection device (10) for an inductive sensor arrangement (1), comprising a circuit carrier (11) having at least one excitation structure (13) and at least one receiving structure (14), wherein the at least one excitation structure (13) comprises at least one excitation coil (13A) with at least one winding, which surrounds the at least one receiving structure (14) on both sides, wherein the at least one receiving structure (14) comprises at least two receiving coils (16) with at least one winding (1W1, 1W2, 1W3, 2W1, 2W2, 2W3), wherein contour profiles of the at least one winding (1W1, 1W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) are each designed such that a largest offset voltage of the offset voltages occurring at the at least two receiving coils (16) and induced by the at least one excitation structure (13) has a value that is lower than a design-related possible maximum value, as well as a corresponding inductive sensor arrangement (1) for detecting a movement of a movable body, comprising at least one coupling device (3) and a measured value detection device (10) of this type.

Description

[0001] Description

[0002] title

[0003] Data acquisition device for an inductive sensor arrangement

[0004] The invention relates to a measured value acquisition device for an inductive sensor arrangement. The present invention also relates to an inductive sensor arrangement with at least one such measured value acquisition device.

[0005] Inductive sensor arrangements are known from the prior art, which comprise a measured value acquisition device with at least one excitation structure and at least one receiving structure, and at least one coupling device, also referred to as a target. Furthermore, the at least one excitation structure comprises at least one excitation coil. The at least one coupling device comprises at least one electrically conductive coupling element. The at least one receiving structure has at least one, but usually two, receiving coils. A high-frequency current flows through the at least one excitation coil, generating an alternating magnetic field that induces eddy currents in the at least one coupling device. The inductive coupling of the at least one excitation coil and the at least one receiving coil depends on the position of the corresponding coupling device.The induced voltage signal in the at least one receiving coil can be used to determine the current position of the coupling device and thus the current position of a body whose movement is to be detected.

[0006] DE 100 26 019 B4 discloses an inductive position sensor comprising an oscillator circuit that generates a periodic alternating voltage signal and couples it into an excitation coil, a plurality of receiving coils, an evaluation circuit, and a movable inductive coupling element that influences the strength of the inductive coupling between the excitation coil and the receiving coils. The excitation coil and the receiving coils are formed as conductor tracks on a carrier plate. Each receiving coil has two taps, via which a voltage induced in the associated receiving coil by the excitation coil can be tapped. The evaluation circuit is arranged within the geometry of the transmitting and / or receiving coils and is designed to evaluate the signals induced in the receiving coils.The effective areas of the receiving coils in the sensor's initial and / or final regions are designed such that the voltages induced by the excitation coil in the receiving coils, which can be tapped at the associated taps of the receiving coils, are zero when the movable element is not present. A disadvantage of this approach is that the measuring range is reduced with fewer than three receiving coils.

[0007] Disclosure of the invention

[0008] The measured value acquisition device for an inductive sensor arrangement with the features of independent patent claim 1 and the corresponding inductive sensor arrangement with the features of independent patent claim 12 each have the advantage that a maximum offset voltage that occurs can be reduced by equalizing the offset voltages induced in the at least two receiving coils of the at least one excitation structure without reducing the measuring range. Since the induced offset voltages, based on the induced and demodulated signals in the receiving coils of the at least one excitation structure, which arise without the presence of the at least one coupling device, are compensated by an evaluation and control unit in order to avoid an angular error orTo keep the position error of the inductive sensor array as small as possible, reducing the maximum offset voltage has a positive effect on the design of the evaluation and control unit. Without compensation for the offset voltages that occur, the angular error or position error of the inductive sensor array would be unacceptably high and the inductive sensor array would be unusable. The ASICs (ASIC: Application-Specific Integrated Circuit) available on the market for the implementation of the evaluation and control unit are limited in terms of the maximum offset voltage that can be compensated. In many coil designs, especially in tight spaces where the at least one excitation coil cannot be arranged any further away from the at least two receiving coils, this limit can often be reached if no further measures are taken.Embodiments of the measured value acquisition device according to the invention for an inductive sensor arrangement offer the possibility of reducing the maximum offset voltage without increasing the installation space or expensive adaptations to the evaluation and control unit.

[0009] Embodiments of the present invention provide a measured value acquisition device for an inductive sensor arrangement, comprising a circuit carrier having at least one excitation structure and at least one receiving structure. The at least one excitation structure comprises at least one excitation coil with at least one turn, which surrounds the at least one receiving structure on both sides. The at least one receiving structure comprises at least two receiving coils with at least one turn. The contours of the at least one turn of the at least two receiving coils are each designed such that the largest offset voltage of the offset voltages occurring at the at least two receiving coils, which are induced by the at least one excitation structure, has a value that is smaller than a design-related possible maximum value.

[0010] In addition, an inductive sensor arrangement for detecting the movement of a moving body, comprising at least one coupling device and such a measured value acquisition device, is proposed. The at least one coupling device or the measured value acquisition device is coupled to the moving body whose movement is to be detected. At least one excitation structure is arranged on a circuit carrier of the measured value acquisition device. The at least one excitation structure is coupled to at least one evaluation and control circuit, which couples a periodic alternating signal into the at least one excitation structure during operation. The at least one coupling device is designed to influence an inductive coupling between the at least one excitation structure and at least one receiving structure of the measured value acquisition device.The at least one evaluation and control unit is designed to receive and evaluate signals induced in the at least one receiving structure and to determine a current relative position of the movable coupling device to the at least one receiving structure and / or a current position of the movable body.

[0011] The inductive sensor arrangement can be designed, for example, as a linear position sensor, in which the movable body executes a translational movement to be detected along a movement axis, or as a rotation angle sensor or rotor position sensor, in which the movable body executes a rotational movement to be detected about a rotation axis. In an inductive rotation sensor, the measured value acquisition device can preferably have a space-saving "C" shape that can be plugged onto a shaft. This can simplify the manufacturing concept for integrating the inductive sensor arrangement. A coil layout for such a measured value acquisition device can be determined, with a suitable choice of the origin (0, 0), by a coordinate transformation of polar coordinates of a coil layout of a measured value acquisition device for an inductive linear position sensor into Cartesian coordinates.

[0012] In this case, an evaluation and control unit can be understood to be an electrical assembly or electrical circuit which prepares, processes or evaluates detected sensor signals. The evaluation and control unit can preferably be designed as an ASIC component (ASIC: Application Specific Integrated Circuit). The evaluation and control unit can have at least one interface, which can be implemented in hardware and / or software. In a hardware embodiment, the interfaces can be part of the ASIC component, for example. However, it is also possible for the interfaces to be separate integrated circuits or to consist at least partially of discrete components. In a software embodiment, the interfaces can be software modules which are present, for example, on a microcontroller alongside other software modules.

[0013] The excitation structure can be understood below as an excitation coil with a predetermined number of turns, which emits the alternating signal coupled by the evaluation and control unit. The measures and further developments listed in the dependent claims enable advantageous improvements to the measured value acquisition device for an inductive sensor arrangement specified in independent patent claim 1 and the inductive sensor arrangement specified in independent patent claim 12.

[0014] It is particularly advantageous that the maximum absolute values ​​of the offset voltages occurring in two receiving coils of the at least one receiving structure can be equal and non-zero. This allows the contours of the at least one winding to be easily implemented to reduce the largest offset voltage in two receiving coils.

[0015] In an advantageous embodiment of the measured value acquisition device, the contours of the at least one winding of the at least two receiving coils can be geometrically congruent or congruent at the end regions of the at least one receiving structure. In this case, the congruence of the contours refers only to the pure in-plane course, without taking into account layer changes and vias in the circuit carrier.

[0016] In a further advantageous embodiment of the measured value acquisition device, the at least two receiving coils can have a predetermined phase shift or a predetermined distance from one another.

[0017] In a further advantageous embodiment of the measured value acquisition device, an individual winding of the at least two receiving coils can each have two loop structures, which form the contour of the at least one winding of the corresponding receiving coil. The two loop structures of the individual windings of the at least two receiving coils can each have multiple loop sections and be formed in at least two levels of the circuit carrier. Sections of the individual loop structures arranged in different levels of the circuit carrier can be electrically connected to one another via vias. In addition, the two loop structures of the individual windings of the at least two receiving coils can have a phase shift of 180° and opposite flow directions to one another.Furthermore, the sections of the individual loop structures arranged in different levels of the circuit carrier can correspond, for example, to half, a quarter, or an eighth of a period of the repeating loop sections. A spacing between adjacent loop structures of the at least one receiving structure can be based on a number of receiving structures, a number of receiving coils, a number of turns of the at least one receiving coil, and the periodicity of the at least one receiving structure. The spacing between the loop structures and the turns of the at least one receiving coil of the same receiving structure can be equal. Equal spacing enables optimal use of the available installation space with regard to maximizing the number of turns while simultaneously avoiding design rule violations.Preferably, the loop structures of the individual turns of the at least one receiving coil can be approximately congruent. Alternatively, the distances between the loop structures of the turns of the at least one receiving coil can differ, particularly if the at least one receiving coil has more than two turns.

[0018] In a further advantageous embodiment of the measured value acquisition device, the two loop structures of the individual windings of the at least two receiving coils can each correspond to a section of a mathematical oscillation with at least one period. The mathematical oscillation can have a sinusoidal shape, a rectangular shape, a triangular shape, or a trapezoidal shape. Of course, the periodically repeating loop sections can also have other suitable shapes or mixed shapes.

[0019] In a further advantageous embodiment of the measured value acquisition device, the at least two receiving coils can each have at least two windings electrically connected in series, which are arranged offset from one another by a predetermined distance. In this case, ends of the individual loop structures of the at least two windings of the at least two receiving coils can be connected to one another at the end regions of the at least one receiving structure via at least one connecting structure in such a way that an electrical series connection of the at least two windings and / or a reversal of a flow direction within one of the at least two windings is created. The at least one connecting structure can, for example, comprise a via which connects two individual loop structures of two windings or a common one of the at least two windings, which are arranged in different planes.In this case, the two individual loop structures can end at the via before the corresponding end of the receiving structure. As a result, the two loop structures are terminated “prematurely,” i.e., before reaching the end of the receiving structure. Preferably, the via can be arranged in the region of an intersection point of the two individual loop structures arranged in different planes. Alternatively, the at least one connecting structure can comprise a conductor track section which is connected at contact points to one end of two individual loop structures of two turns arranged in the same plane, or to a common end of the at least two turns, and connects these to one another. If the turns to be connected “end” in the same plane of the circuit board, no via is required; one conductor track section is sufficient.As a further alternative, the at least one connecting structure can comprise a via and at least one conductor track section in one of the two levels or in both levels, and connect two individual loop structures arranged in different levels, each consisting of two turns or a common one of the at least two turns. The alternative design options for the connecting structure allow it to be easily adapted to the structural conditions of the receiving structure. By efficiently positioning the at least one connecting structure between several turns of a receiving coil within a corresponding receiving structure, space can be saved, the amplitude of the induced voltage can be increased, and the angular error of the measured value acquisition device can be reduced at the same time.By prematurely terminating a loop structure of the receiver coil, a series connection of at least two turns of the receiver coil and / or a reversal of the flow direction of a turn can be made possible. In addition, the series connection within the receiver structure can induce a higher usable voltage in the receiver coil than with a series connection outside the receiver structure. A higher induced voltage results in a better signal-to-noise ratio and increased EMC (electromagnetic compatibility) robustness. Furthermore, this enables the use of more cost-effective semiconductor amplifiers with lower gain factors. The term "within the receiver structure" here means that the connecting structures are arranged within the area or plane spanned by the receiver structure.For example, if the receiving structure extends in a first direction y from y_min to y_max and in a second direction x from x_min to x_max, then the connecting structure is arranged between y_min and y_max or between x_min and x_max. The shape and design of the connecting structure depend on the respective parameters.

[0020] Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description. In the drawings, like reference numerals designate components or elements that perform the same or similar functions.

[0021] Short description of the drawings

[0022] Fig. 1 shows a schematic plan view of a first embodiment of an inductive sensor arrangement according to the invention with a first embodiment of a measured value acquisition device according to the invention, wherein a circuit carrier of the measured value acquisition device is shown transparently.

[0023] Fig. 2 shows a schematic plan view of a first end region of the measured value acquisition device according to the invention from Fig. 1 with a first receiving coil.

[0024] Fig. 3 shows a schematic plan view of a second end region of the measured value acquisition device according to the invention from Fig. 1 with the first receiving coil. Fig. 4 shows a schematic plan view of the first end region of the measured value acquisition device according to the invention from Fig. 1 with a second receiving coil.

[0025] Fig. 5 shows a schematic plan view of the second end region of the measured value acquisition device according to the invention from Fig. 1 with the second receiving coil.

[0026] Fig. 6 shows a schematic plan view of a second embodiment of an inductive sensor arrangement according to the invention with a second embodiment of a measured value acquisition device according to the invention, wherein a circuit carrier of the measured value acquisition device is shown transparently.

[0027] Fig. 7 shows a schematic plan view of a first end region of a third embodiment of a receiving structure for a measured value acquisition device according to the invention.

[0028] Fig. 8 shows a schematic plan view of a second end region of the receiving structure for a measured value acquisition device according to the invention from Fig. 7.

[0029] Fig. 9 shows a schematic plan view of a fourth embodiment of a receiving structure for a measured value acquisition device according to the invention.

[0030] Fig. 10 shows a schematic plan view of a third embodiment of an inductive sensor arrangement according to the invention with a fifth embodiment of a measured value acquisition device according to the invention, wherein a circuit carrier of the measured value acquisition device is shown transparently.

[0031] Embodiments of the invention As can be seen from Fig. 1 to 10, the illustrated embodiments of a measured value acquisition device 10 according to the invention for an inductive sensor arrangement 1 each comprise a circuit carrier 11 which has at least one excitation structure 13 and at least one receiving structure 14. The at least one excitation structure 13 comprises at least one excitation coil 13A with at least one turn, which encloses the at least one receiving structure 14 on both sides. The at least one receiving structure 14 comprises at least two receiving coils 16 with at least one turn 1W1, 1W2, 1W3, 2W1, 2W2, 2W3.Contour profiles of the at least one winding 1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16 are each designed such that a largest offset voltage in terms of magnitude of the offset voltages occurring at the at least two receiving coils 16, which are induced by the at least one excitation structure 13, has a value which is smaller than a possible maximum value due to the design.

[0032] As can be further seen from Fig. 1 to 10, an individual winding 1 W1 , 1 W2 , 1 W3 , 2 W1 , 2 W2 , 2 W3 of the at least two receiving coils 16 each has two loop structures 18A, 18B, which form the contour of the at least one winding 1 W1 , 1 W2 , 1 W3 , 2 W1 , 2 W2 , 2 W3 of the corresponding receiving coil 16. Here, the two loop structures 18A, 18B of the individual windings 1 W1 , 1 W2 , 1 W3 , 2 W1 , 2 W2 , 2 W3 of the at least two receiving coils 16 each have a plurality of loop sections SA and are formed in at least two levels of the circuit carrier 11. Sections of the individual loop structures 18A, 18B arranged in different levels of the circuit carrier 11 are electrically connected to one another via vias DK.The two loop structures 18A, 18B of the individual windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16 have a phase shift of 180° and opposite flow directions to one another. As can be seen in particular from Fig. 1, the loop sections SA of the two loop structures 18A, 18B are each repeated periodically in the illustrated embodiments. This means that the two loop structures 18A, 18B of the individual windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16 each correspond to a section 5 of a mathematical oscillation with at least one period. In this case, a number of half periods arranged in the section 5 corresponds to an integer multiple greater than two. In the illustrated embodiments, the mathematical oscillation or the repeating loop sections SA each have a sine shape or a cosine shape.In alternative embodiments not shown, the mathematical oscillation or the repeating loop sections SA have a rectangular shape, a triangular shape, a trapezoidal shape, or a mixed shape. In addition, the sections of the individual loop structures 18A, 18B arranged in different levels of the circuit carrier 11 correspond to half a period of the repeating loop sections SA. In this case, the vias DK, which connect the sections of the individual loop structures 18A, 18B arranged on a lower or second level of the circuit carrier 11 in the illustrations with the sections of the individual loop structures 18A, 18B arranged on an upper or first level of the circuit carrier 11 in the illustrations, are each arranged at an upper edge of the receiving structure 14 in the illustrations and at a lower edge of the receiving structure 14 in the illustrations.Alternatively, the sections of the individual loop structures 18A, 18B arranged in different levels of the circuit carrier 11 can correspond to a quarter or an eighth of a period. Due to early termination, the shape of the loop sections SA of the loop structures 18A, 18B at the end regions 14.1, 14.2 of the receiving structure 14 can differ from the shape of the repeating loop sections SA of the loop structures 18A, 18B in the remaining regions of the receiving structure 14.

[0033] In the illustrated embodiments of the measured value acquisition device 10, the flow direction in a first loop structure 18A of the at least one winding 1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16 runs in the positive x-direction (here from left to right) and in a second loop structure 18B of the at least one winding 1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16 runs in the negative x-direction (here from right to left). Due to the two loop structures 18A, 18B arranged offset from one another by half a period or by 180° along the movement path BB with opposite passage directions, surfaces are enclosed between the first loop structure 18A and the second loop structure 18B of the at least one winding 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16, which have different surface normals.Depending on the periodicity of the at least one winding 1 W1 , 1 W2, 1 W3, 2W1 , 2W2, 2W3 of the at least two receiving coils 16, a corresponding number of surface pairs is enclosed between the two loop structures 18A, 18B of the at least one winding 1 W1 , 1 W2, 1 W3, 2W1 , 2W2, 2W3.

[0034] As can be further seen from Figs. 1 and 6, the inductive sensor arrangement 1 in the illustrated embodiments is each designed as an inductive linear displacement sensor and comprises at least one coupling device 3 and a measured value acquisition device 10 according to the invention for detecting a movement of a linearly movable body (not shown). In this case, the at least one coupling device 3 or the measured value acquisition device 10 is coupled to the movable body (not shown), whose linear movement along the movement path BB is to be detected. At least one excitation structure 13 is arranged on a circuit carrier 11 of the measured value acquisition device 10. The at least one excitation structure 13 is coupled to at least one evaluation and control circuit 12, which, during operation, feeds a periodic alternating signal into the at least one excitation structure

[0035] 13. The at least one coupling device 3 comprises an electrically conductive coupling element 3.1 and is designed to influence an inductive coupling between the at least one excitation structure 13 and at least one receiving structure 14 of the measured value acquisition device 10. The at least one evaluation and control unit 12 is designed to receive, demodulate, and evaluate signals induced in the at least one receiving structure 14 and to determine a current relative position of the movable coupling device 3 to the at least one receiving structure 14 and / or a current position of the movable body. As can be further seen from Fig. 1 and 6, the receiving structure 14 extends in a first direction y from y_min to y_max and in a second direction x along a movement path BB of the coupling device 3 from x_min to x_max and spans a corresponding plane or surface between (y_max - y_min) and (x_max - x_min).The dimensions correspond to at least one receiving structure.

[0036] 14 or the spanned plane or surface the section 5 of the mathematical oscillations which specify the geometric contours of the at least two receiving coils 16.

[0037] To maintain clarity, an electrical connection of the at least two receiving coils 16 of the at least one receiving structure 14 to the evaluation and control unit 12 is not shown in Figs. 1 to 10. This does not represent a short circuit of the at least one receiving coil 16. Of course, the at least one receiving coil 16 can be separated at a suitable location, for example at a through-hole DK, and guided to the evaluation and control unit 12 via additional conductor tracks, so that the induced signals can be evaluated there.

[0038] As can be further seen from Fig. 1 to 10, the illustrated embodiments of the measured value acquisition device 10 according to the invention each comprise a receiving structure 14 with two receiving coils 16 each. Due to the sinusoidal shape or cosinusoidal shape of the loop structures 18A, 18B of the two receiving coils 16, the design-related maximum possible value of the offset voltage, which is induced in the two receiving coils 16 by the at least one excitation structure 13 without the presence of the coupling device 3, occurs when the geometric contour or the loop structures 18A, 18B of one of the two receiving coils 16 at one end x_min, x_max of the receiving structure 14 each have the maximum possible value y_max or y_min in the y-direction or a maximum possible deflection "upwards" or "downwards" relative to a zero line "0".A design-related minimum possible value of the offset voltage occurs when the geometric contour or the loop structures 18A, 18B of one of the two receiving coils 16 at one end x_min or x_max of the receiving structure 14 each have a minimum possible value relative to the zero line. This means that the loop structures 18A, 18B have a "zero crossing" or no deflection, or a value of "0."

[0039] In prior art receiving structures 14 with two receiving coils 16, the section 5 of the periodic oscillation waveform is selected such that the loop structures 18A, 18B of a first receiving coil 16A each have the "zero crossing" or no deflection or the value "0", which causes the design-related minimum possible value of the offset voltage, and the loop structures 18A, 18B of a second receiving coil 16B each have the maximum possible value y_max or y_min in the y-direction or the maximum possible deflection "up" or "down" relative to the zero line "0", which causes the design-related maximum possible value of the offset voltage. This means that in the known receiving structure 14, the largest offset voltage of the offset voltages occurring at the two receiving coils 16 has the design-related maximum possible value.

[0040] In order to reduce the largest offset voltage in terms of magnitude of the offset voltages occurring at the at least two receiving coils 16, which are induced by the at least one excitation structure 13, the geometric contour or the loop structures 18A, 18B of the two receiving coils 16 at the ends x_min, x_max of the receiving structure 14 are adjusted to one another in such a way that the geometric contour or the loop structures 18A, 18B of the two receiving coils 16 at the ends x_min, x_max of the receiving structure 14 each have values ​​or deflections "up" or "down" relative to the zero line "0", which lie between the maximum possible value y_max or y_min and the minimum possible value relative to the zero line. This means that the loop structures 18A, 18B of the at least two receiving coils 16 in the section 5 are shifted by a displacement dx in the x-direction compared to the prior art.With a uniform arrangement of the loop structures 18A, 18B of the windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16, the displacement dx is calculated according to equation (1). dx = xp / (4*m*nw) (1).

[0041] Here, “xp” is the length of one period of the loop structures 18A, 18B, “m” is the number of receiver coils 16 and “nw” is the number of turns per receiver coil 16.

[0042] In the case of a uniform arrangement of the loop structures 18A, 18B of the windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the at least two receiving coils 16, the distance dw between the windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 is calculated according to equation (2). dw = xp / (2*m*nw) (2)

[0043] As can be further seen from Figs. 1 to 10, the geometric values ​​or deflections "upward" or "downward" of the loop structures 18A, 18B relative to the zero line "0" at the ends x_min, x_max of the receiving structure 14 are equal in size for two receiving coils 16 and smaller than the maximum possible deflection due to the design. This results in the maximum values ​​of the absolute values ​​of the offset voltages occurring for two receiving coils 16 of the at least one receiving structure 14 also being equal in size and smaller than the maximum possible value of the offset voltage due to the design and not equal to zero.

[0044] As can be further seen from Fig. 1 to 5, a first embodiment of the inductive sensor arrangement 1A according to the invention comprises a first embodiment of the measured value acquisition device 10A, which comprises a receiving structure 14A and the excitation structure 13, which in the illustrated first embodiment of the inductive sensor arrangement 1A has an excitation coil 13A with four windings arranged in two levels of the circuit carrier 11. This means that two windings are arranged in each level of the circuit carrier 11. The receiving structure 14A comprises two receiving coils 16A, 16B, each having a winding 1W1, 2W1 and being formed in two levels of the circuit carrier 11. Here, a first receiving coil 16A forms a sine channel and a second receiving coil 16B forms a cosine channel.The individual windings 1W1, 2W1 of the two receiving coils 16A, 16B each have two loop structures 18A, 18B, each with five loop sections SA. In the illustrated embodiment, the loop sections SA of the two loop structures 18A, 18B of the individual windings 1W1, 2W1 have a sinusoidal shape and opposite flow directions. The loop structures 18A, 18B of the windings 1W1, 2W1 of the two receiving coils 16A, 16B are offset from one another by a predetermined distance, which here corresponds to a phase shift ds of 90° between the two receiving coils 16A, 16B. Here, ends of the individual loop structures 18A, 18B of the respective winding 1W1, 2W1 of the two receiving coils 16A, 16B are at end regions 14.1, 14.2 of the receiving structure 14A are each connected to one another via a connecting structure 20A1, 20B1, 20A2, 20B2 in such a way that a reversal of the flow direction occurs within the respective winding 1W1, 2W1.

[0045] As can be further seen from Fig. 1 and 2, a first connection structure 20A2 of the second receiving coil 16B comprises at a first end 14.1 of the receiving structure 14A a straight conductor track piece 22 which is arranged in an upper or first level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 of the second receiving coil 16B and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B.

[0046] As can be further seen from Fig. 1 and 3, a second connection structure 20B2 of the second receiving coil 16B comprises at a second end 14.2 of the receiving structure 14A a through-plating DK which connects a section of the first loop structure 18A arranged in a lower or second level of the circuit carrier 11 to a section of the first loop structure 18A arranged in the upper or first level, and a straight conductor track piece 22 which is arranged in the upper or first level and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B.

[0047] As can be further seen from Fig. 1 and 4, a first connection structure 20A1 of the first receiving coil 16A comprises at a first end 14.1 of the receiving structure 14A a through-plating DK which connects a section of the second loop structure 18B arranged in an upper or first level of the circuit carrier 11 to a section of the second loop structure 18B arranged in the lower or second level, and a straight conductor track piece 22 which is arranged in the second level and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1 W1 and with a second end to a contact point 24 of the first loop structure 18A of the winding 1 W1 of the first receiving coil 16A.

[0048] As can be further seen from Fig. 1 and 5, a second connection structure 20B1 of the first receiving coil 16A comprises at a second end 14.2 of the receiving structure 14A a straight conductor track piece 22 which is arranged in the lower or second level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1W1 of the first receiving coil 16A and with a second end to a contact point 24 of the first loop structure 18A of the winding 1W1 of the first receiving coil 16A.

[0049] As can be seen in particular from Fig. 2 and 5, the contour of the winding 1W1 of the first receiving coil 16A at the second end region 14.2 of the receiving structure 14A, which encloses a first surface A11, and the contour of the winding 2W1 of the second receiving coil 16B at the first end region 14.1 of the receiving structure 14A, which encloses a second surface A12, are geometrically congruent or congruent.

[0050] As can be seen in particular from Fig. 3 and 4, the contour of the winding 1W1 of the first receiving coil 16A at the first end region 14.1 of the receiving structure 14A, which encloses a third surface A21, and the contour of the winding 2W1 of the second receiving coil 16B at the second end region 14.2 of the receiving structure 14A, which encloses a fourth surface A22, are geometrically congruent or congruent.

[0051] As can further be seen from Fig. 6, a second exemplary embodiment of the inductive sensor arrangement 1B according to the invention comprises a second exemplary embodiment of the measured value acquisition device 10B, which comprises a receiving structure 14B and the excitation structure 13, which in the illustrated second exemplary embodiment of the inductive sensor arrangement 1B also has an excitation coil 13B with two windings arranged in two planes of the circuit carrier 11. The receiving structure 14B comprises two receiving coils 16A, 16B, each of which has three windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 and is formed in two planes of the circuit carrier 11. Here, a first receiving coil 16A forms a sine channel and a second receiving coil 16B forms a cosine channel. The individual windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the two receiving coils 16A, 16B each have two loop structures 18A, 18B, each with five loop sections SA.In the illustrated embodiment, the loop sections SA of the two loop structures 18A, 18B of the individual windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 have a sinusoidal or cosinusoidal shape and opposite flow directions. The loop structures 18A, 18B of the three electrically series-connected windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the two receiving coils 16A, 16B are offset from one another by a predetermined distance dw. The ends of the individual loop structures 18A, 18B of the three windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 of the two receiving coils 16A, 16B are connected to end regions 14.1, 14.2.2 of the receiving structure 14B are each connected to one another via three connecting structures 20A1, 20B1, 20C1, 20D1, 20E1, 20F1, 20A2, 20B2, 20C2, 20D2, 20E2, 20F2 in such a way that an electrical series connection of the three windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W2 of the two receiving coils 16A, 16B and / or a reversal of the flow direction within one of the three windings 1W1, 1W2, 1W3, 2W1, 2W2, 2W3 is created.

[0052] As can further be seen from Fig. 6, a first connection structure 20A1, a second connection structure 20B1 and a third connection structure 20C1 of the first receiving coil 16A each comprise a via DK at a first end 14.1 of the receiving structure 14B. The first connection structure 20A1 connects a second loop structure 18B of a second turn 1W2 of the first receiving coil 16A to a first loop structure 18A of a first turn 1W1 of the first receiving coil 16A. Therefore, the second loop structure 18B of the second turn 1W2 and the first loop structure 18A of the first turn 1W1 of the first receiving coil 16A each end prematurely before the first end 14.1 of the receiving structure 14B at the via DK. The second connection structure 20B1 connects a second loop structure 18B of the first winding 1W1 of the first receiving coil 16A to a first loop structure 18A of the second winding 1W2 of the first receiving coil 16A.Therefore, the second loop structure 18B of the first turn 1 W1 and the first loop structure 18A of the second turn 1 W2 of the first receiving coil 16A each end prematurely before the first end 14.1 of the receiving structure 14B at the via DK. The third connection structure 20C1 connects a second loop structure 18B of the third turn 1 W3 of the first receiving coil 16A to a first loop structure 18A of the third turn 1 W3 of the first receiving coil 16A. Therefore, the first loop structure 18A and the second loop structure 18B of the third turn 1 W3 of the first receiving coil 16A each end prematurely before the first end 14.1 of the receiving structure 14B at the via DK.

[0053] As can further be seen from Fig. 6, a first connection structure 20A2 and a second connection structure 20B2 of the second receiving coil 16B at a first end 14.1 of the receiving structure 14B each comprise a straight conductor track section 22 running in the y-direction, which are each connected at contact points 24 to one end of two individual loop structures 18A, 18B arranged in the same plane of the circuit carrier 11. For this purpose, the straight conductor track section 22 of the first connection structure 20A2 running in the y-direction in the upper or first plane of the circuit carrier 11 is connected with a first end at a contact point 24 to one end of a first loop structure 18A of the first winding 2W1 of the second receiving coil 16B and with a second end at a contact point 24 to one end of the second loop structure 18B of the second winding 2W2 of the second receiving coil 16B.The straight conductor track section 22 of the second connection structure 20B2, which runs in the y-direction, is connected in the lower or second level of the circuit carrier 11 with a first end at a contact point 24 to one end of a first loop structure 18A of the second turn 2W2 of the second receiving coil 16B and with a second end at a contact point 24 to one end of a second loop structure 18B of the first turn 2W1 of the second receiving coil 16B. A third connection structure 20C2 of the second receiving coil 16B comprises, at the first end 14.1 of the receiving structure 14B, a via DK and a straight conductor track section 22 running in the y-direction. The via DK is connected in the lower or second level of the circuit carrier to an early end of a first loop structure 18A of the third turn 2W3. In the upper orIn the first level of the circuit carrier 11, the through-hole DK is connected to one end of the straight conductor track section 22 arranged in the upper or first level. At the other end, the straight conductor track section 22 is connected at a contact point 24 to a premature end of the second loop structure 18B of the third winding 2W3 arranged in the upper or first level of the circuit carrier 11. Thus, the loop structures 18A, 18B of the third winding 2W3 of the second receiving coil 16B end prematurely before the first end 14.1 of the receiving structure 14B.

[0054] As can further be seen from Fig. 6, a fourth connection structure 20D1 of the first receiving coil 16A at the second end 14.2 of the receiving structure 14B comprises a via DK and a straight conductor track section 22 running in the y-direction. The via DK is connected in the lower or second level of the circuit carrier to an early end of a first loop structure 18A of the first winding 1W1. In the upper or first level of the circuit carrier 11, the via DK is connected to one end of the straight conductor track section 22 arranged in the upper or first level. At the other end, the straight conductor track section 22 is connected at a contact point 24 to an early end of the second loop structure 18B of the first winding 1W1 arranged in the upper or first level of the circuit carrier 11.Thus, the loop structures 18A, 18B of the first turn 1W1 of the first receiving coil 16A end prematurely before the second end 14.2 of the receiving structure 14B. A fifth connecting structure 20E1 and a sixth connecting structure 20F1 of the first receiving coil 16A each comprise, at the second end 14.2 of the receiving structure 14B, a straight conductor track section 22 running in the y-direction, which are connected at contact points 24 to one end of two individual loop structures 18A, 18B arranged in the same plane of the circuit carrier 11. For this purpose, the straight conductor track section 22 running in the y-direction of the fifth connecting structure 20E1 is in the lower orsecond level of the circuit carrier 11 with a first end at a contact point 24 with one end of a first loop structure 18A of the second winding 1 W2 of the first receiving coil 16A and with a second end at a contact point 24 with one end of the second loop structure 18B of the third winding 1 W3 of the first receiving coil 16A. The straight conductor track section 22 of the sixth connecting structure 20F1 running in the y-direction is connected in the upper or first level of the circuit carrier 11 with a first end at a contact point 24 with one end of a first loop structure 18A of the third winding 1 W3 of the first receiving coil 16A and with a second end at a contact point 24 with one end of a second loop structure 18B of the second winding 1 W2 of the first receiving coil 16A.

[0055] As can further be seen from Fig. 6, a fourth connection structure 20D2, a fifth connection structure 20E2 and a sixth connection structure 20F2 of the second receiving coil 16B at the second end 14.2 of the receiving structure 14B each comprise a via DK. The fourth connection structure 20D2 connects a second loop structure 18B of a first turn 2W1 of the second receiving coil 16B to a first loop structure 18A of the first turn 2W1 of the second receiving coil 16B. Therefore, the first loop structure 18A and the second loop structure 18B of the first turn 2W1 of the second receiving coil 16B each end prematurely before the second end 14.2 of the receiving structure 14B at the via DK. The fifth connection structure 20E2 connects a second loop structure 18B of the second winding 2W2 of the second receiving coil 16B to a first loop structure 18A of the third winding 2W3 of the second receiving coil 16B.Therefore, the second loop structure 18B of the second turn 2W2 and the first loop structure 18A of the third turn 2W3 of the second receiving coil 16B each end prematurely before the second end 14.2 of the receiving structure 14B at the via DK. The sixth connecting structure 20F2 connects a second loop structure 18B of the third turn 2W3 of the second receiving coil 16B to a first loop structure 18A of the second turn 2W2 of the second receiving coil 16B. Therefore, the first loop structure 18A of the second turn 2W2 and the second loop structure 18B of the third turn 2W3 of the second receiving coil 16B each end prematurely before the second end 14.2 of the receiving structure 14B at the via DK.

[0056] As can further be seen from Fig. 6, the contours of the windings 1 W1 , 1 W2 , 1 W3 of the first receiving coil 16A at the second end region 14.2 of the receiving structure 14B and the contours of the windings 2W1 , 2W2 , 2W3 of the second receiving coil 16B at the first end region 14.1 of the receiving structure 14 are geometrically congruent or coincident. As can be further seen from Fig. 6, the contours of the windings 1 W1 , 1 W2 , 1 W3 of the first receiving coil 16A at the first end region 14.1 of the receiving structure 14 and the contours of the windings 2W1 , 2W2 , 2W3 of the second receiving coil 16B at the second end region 14.2 of the receiving structure 14 are geometrically congruent or coincident.

[0057] As can be further seen from Figs. 7 and 8, a third exemplary embodiment of a receiving structure 14C for a measured value acquisition device 10C comprises two receiving coils 16A, 16B, each having two windings 1W1, 1W2, 2W1, 2W2 and formed in two planes of the circuit carrier 11. A first receiving coil 16A forms a sine channel, and a second receiving coil 16B forms a cosine channel. The individual windings 1W1, 1W2, 2W1, 2W2 of the two receiving coils 16A, 16B each have two loop structures 18A, 18B with at least one loop section, which, in the illustrated exemplary embodiment, have a sine shape or cosine shape and opposite flow directions. The loop structures 18A, 18B of the two electrically series-connected windings 1W1, 1W2, 2W1, 2W2 of the two receiving coils 16A, 16B are arranged offset from one another by a predetermined distance dw.In this case, ends of the individual loop structures 18A, 18B of the two windings 1W1, 1W2, 2W1, 2W2 of the two receiving coils 16A, 16B are connected to one another at end regions 14.1, 14.2 of the receiving structure 14B via two connecting structures 20A1, 20B1, 20C1, 20D1, 20A2, 20B2, 20C2, 20D2 in such a way that an electrical series connection of the two windings 1W1, 1W2, 2W1, 2W2 of the two receiving coils 16A, 16B and / or a reversal of the flow direction within one of the two windings 1W1, 1W2, 2W1, 2W2 is created.

[0058] As can further be seen from Fig. 7, a first connection structure 20A1 and a second connection structure 20B1 of the first receiving coil 16A each comprise a via DK at a first end 14.1 of the receiving structure 14C. The first connection structure 20A1 connects a second loop structure 18B of a second turn 1W2 of the first receiving coil 16A to a first loop structure 18A of a first turn 1W1 of the first receiving coil 16A. Therefore, the second loop structure 18B of the second turn 1W2 and the first loop structure 18A of the first turn 1W1 of the first receiving coil 16A each end prematurely before the first end 14.1 of the receiving structure 14C at the via DK. The second connection structure 20B1 connects a second loop structure 18B of the first winding 1W1 of the first receiving coil 16A to a first loop structure 18A of the second winding 1W2 of the first receiving coil 16A.Therefore, the second loop structure 18B of the first winding 1W1 and the first loop structure 18A of the second winding 1W2 of the first receiving coil 16A each end prematurely before the first end 14.1 of the receiving structure 14C at the via DK.

[0059] As can further be seen from Fig. 7, a first connection structure 20A2 and a second connection structure 20B2 of the second receiving coil 16B at a first end 14.1 of the receiving structure 14B each comprise a straight conductor track section 22 running in the y-direction, which are each connected at contact points 24 to one end of two individual loop structures 18A, 18B arranged in the same plane of the circuit carrier 11. For this purpose, the straight conductor track section 22 of the first connection structure 20A2 running in the y-direction in the lower or second plane of the circuit carrier 11 is connected with a first end at a contact point 24 to one end of a first loop structure 18A of the first winding 2W1 of the second receiving coil 16B and with a second end at a contact point 24 to one end of the second loop structure 18B of the first winding 2W1 of the second receiving coil 16B.The straight conductor track section 22 of the second connection structure 20B2 running in the y-direction is connected in the upper or first level of the circuit carrier 11 with a first end at a contact point 24 to one end of a first loop structure 18A of the second winding 2W2 of the second receiving coil 16B and with a second end at a contact point 24 to one end of a second loop structure 18B of the second winding 2W2 of the second receiving coil 16B.

[0060] As can further be seen from Fig. 8, a third connection structure 20C1 and a fourth connection structure 20D1 of the first receiving coil 16A at a second end 14.2 of the receiving structure 14B each comprise a straight conductor track section 22 running in the y-direction, which are each connected at contact points 24 to one end of two individual loop structures 18A, 18B arranged in the same plane of the circuit carrier 11. For this purpose, the straight conductor track section 22 of the third connection structure 20C1 running in the y-direction in the lower or second plane of the circuit carrier 11 is connected with a first end at a contact point 24 to one end of a first loop structure 18A of the first winding 1W1 of the first receiving coil 16A and with a second end at a contact point 24 to one end of the second loop structure 18B of the first winding 1W1 of the first receiving coil 16A.The straight conductor track section 22 of the fourth connection structure 20D1, which runs in the y-direction, is connected in the upper or first level of the circuit carrier 11 with a first end at a contact point 24 to one end of a first loop structure 18A of the second winding 1W2 of the first receiving coil 16A and with a second end at a contact point 24 to one end of a second loop structure 18B of the second winding 1W2 of the first receiving coil 16A.

[0061] As can further be seen from Fig. 8, a third connection structure 20C2 and a fourth connection structure 20D2 of the second receiving coil 16B at a second end 14.2 of the receiving structure 14C each comprise a via DK. The third connection structure 20C2 connects a second loop structure 18B of a second turn 2W2 of the second receiving coil 16B to a first loop structure 18A of a first turn 2W1 of the second receiving coil 16B. Therefore, the second loop structure 18B of the second turn 2W2 and the first loop structure 18A of the first turn 2W1 of the second receiving coil 16A each end prematurely before the second end 14.2 of the receiving structure 14C at the via DK. The fourth connection structure 20D2 connects a second loop structure 18B of the first winding 2W1 of the second receiving coil 16B to a first loop structure 18A of the second winding 2W2 of the second receiving coil 16B.Therefore, the second loop structure 18B of the first winding 2W1 and the first loop structure 18A of the second winding 2W2 of the second receiving coil 16B each end prematurely before the second end 14.2 of the receiving structure 14C at the via DK.

[0062] As can be further seen from Fig. 7 and 8, the contours of the windings 1W1, 1W2 of the first receiving coil 16A at the second end region 14.2 of the receiving structure 14B and the contours of the windings 2W1, 2W2 of the second receiving coil 16B at the first end region 14.1 of the receiving structure 14 are geometrically congruent or coincident.

[0063] As can be further seen from Fig. 7 and 8, the contours of the windings 1W1, 1W2 of the first receiving coil 16A at the first end region 14.1 of the receiving structure 14 and the contours of the windings 2W1, 2W2 of the second receiving coil 16B at the second end region 14.2 of the receiving structure 14 are geometrically congruent or coincident.

[0064] As can also be seen from Fig. 9, a fourth exemplary embodiment of a receiving structure 14D for a measured value acquisition device 10D comprises two receiving coils 16A, 16B, each having a winding 1W1, 2W1 and formed in two planes of the circuit carrier 11. A first receiving coil 16A forms a sine channel, and a second receiving coil 16B forms a cosine channel. The individual windings 1W1, 2W1 of the two receiving coils 16A, 16B each have two loop structures 18A, 18B, each with 2.5 loop sections or 5 half loop sections SA. In the exemplary embodiment shown, the loop sections SA of the two loop structures 18A, 18B of the individual windings 1W1, 2W1 have a sinusoidal shape and opposite flow directions.The loop structures 18A, 18B of the windings 1W1, 2W1 of the two receiving coils 16A, 16B are arranged offset from one another by a predetermined distance, which here corresponds to a phase shift ds of 90° between the two receiving coils 16A, 16B. The ends of the individual loop structures 18A, 18B of the respective winding 1W1, 2W1 of the two receiving coils 16A, 16B are connected to one another at end regions 14.1, 14.2 of the receiving structure 14A via a connecting structure 20A1, 20B1, 20A2, 20B2 in such a way that a reversal of the flow direction within the respective winding 1W1, 2W1 occurs.

[0065] As can be further seen from Fig. 9, a first connection structure 20A2 of the second receiving coil 16B comprises at a first end 14.1 of the receiving structure 14D a straight conductor track piece 22 which is arranged in an upper or first level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 of the second receiving coil 16B and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B.

[0066] As can further be seen from Fig. 9, a second connection structure 20B2 of the second receiving coil 16B at a second end 14.2 of the receiving structure 14D comprises a via DK which connects a section of the second loop structure 18B arranged in a lower or second level of the circuit carrier 11 to a section of the second loop structure 18B arranged in the upper or first level, and a straight conductor track piece 22 which is arranged in the upper or first level and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B.

[0067] As can further be seen from Fig. 9, a first connection structure 20A1 of the first receiving coil 16A at a first end 14.1 of the receiving structure 14D comprises a via DK which connects a section of the second loop structure 18B arranged in an upper or first level of the circuit carrier 11 to a section of the second loop structure 18B arranged in the lower or second level, and a straight conductor track piece 22 which is arranged in the lower or second level and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1 W1 and with a second end to a contact point 24 of the first loop structure 18A of the winding 1 W1 of the first receiving coil 16A.

[0068] As can be further seen from Fig. 9, a second connection structure 20B1 of the first receiving coil 16A comprises at a second end 14.2 of the receiving structure 14D a straight conductor track piece 22 which is arranged in the lower or second level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1W1 of the first receiving coil 16A and with a second end to a contact point 24 of the first loop structure 18A of the winding 1W1 of the first receiving coil 16A.

[0069] As can also be seen from Fig. 9, the contour of the winding 1W1 of the first receiving coil 16A at the second end region 14.2 of the receiving structure 14D and the contour of the winding 2W1 of the second receiving coil 16B at the first end region 14.1 of the receiving structure 14D are geometrically congruent or identical. Furthermore, the contour of the winding 1W1 of the first receiving coil 16A at the first end region 14.1 of the receiving structure 14D and the contour of the winding 2W1 of the second receiving coil 16B at the second end region 14.2 of the receiving structure 14D are geometrically congruent or identical.

[0070] As can further be seen from Fig. 10, the inductive sensor arrangement 1C in the illustrated third embodiment is designed as an inductive angle of rotation sensor or rotor position sensor, in which the movable body (not shown) executes a rotational movement to be detected about a rotational axis. Analogous to the exemplary embodiments described above, the inductive sensor arrangement 1C for detecting a movement of a rotary body (not shown) comprises at least one coupling device (not shown in detail) and a measured value acquisition device 10E according to the invention, which in the illustrated third embodiment of the inductive sensor arrangement 1C has a space-saving "C" shape that can be plugged onto a shaft. In this case, the at least one coupling device or the measured value acquisition device 10E is coupled to the movable body (not shown) whose rotational movement is to be detected.At least one excitation structure 13 is arranged on a circuit carrier 11 of the measured value acquisition device 10C. The at least one excitation structure 13 is coupled to an evaluation and control circuit 12, which couples a periodic alternating signal into the at least one excitation structure 13 during operation. The at least one coupling device comprises an electrically conductive coupling element and is designed to influence an inductive coupling between the at least one excitation structure 13 and at least one receiving structure 14E of the measured value acquisition device 10E. The at least one evaluation and control unit 12 is designed to receive, demodulate, and evaluate signals induced in the at least one receiving structure 14E and to determine a current relative position of the movable coupling device to the at least one receiving structure 14E and / or a current position of the movable body.

[0071] As can also be seen from Fig. 10, the illustrated fifth embodiment of the measured value acquisition device 10E comprises a receiving structure 14E and the excitation structure 13, which in the illustrated third embodiment of the inductive sensor arrangement 1C comprises an excitation coil 13C with six windings arranged in two levels of the circuit carrier 11. This means that three windings are arranged in each level of the circuit carrier 11. The receiving structure 14E comprises two receiving coils 16A, 16B, each having two windings 1W1, 2W1 and formed in two levels of the circuit carrier 11. Here, a first receiving coil 16A forms a sine channel and a second receiving coil 16B forms a cosine channel. The individual windings 1W1, 2W1 of the two receiving coils 16A, 16B each have two loop structures 18A, 18B, which in the illustrated embodiment each have a sinusoidal shape orCosine shape and opposite flow directions. The loop structures 18A, 18B of the windings 1W1, 2W1 of the two receiving coils 16A, 16B are arranged offset from one another by a predetermined distance. The ends of the individual loop structures 18A, 18B of the windings 1W1, 2W1 of the two receiving coils 16A, 16B are connected to one another at end regions 14.1, 14.2 of the receiving structure 14B via a connecting structure 20A1, 20B1, 20A2, 20B2 in such a way that a reversal of the flow direction occurs within the windings 1W1, 2W1.

[0072] As can be further seen from Fig. 10, a first connection structure 20A2 of the second receiving coil 16B at a first end 14.1 of the receiving structure 14E comprises a straight conductor track piece 22 which is arranged in a lower or second level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 of the second receiving coil 16B and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B. As can be further seen from Fig. 10, a second connection structure 20B2 of the second receiving coil 16B at a second end 14.2 of the receiving structure 14E comprises a via DK which connects a section of the second loop structure 18B arranged in an upper or first level of the circuit carrier 11 to a section of the second loop structure 18B arranged in the lower or second level of the circuit carrier 11.second level arranged section of the second loop structure 18B, and a straight conductor track piece 22, which is arranged in the lower or second level and is connected with a first end to a contact point 24 of the first loop structure 18A of the winding 2W1 and with a second end to a contact point 24 of the second loop structure 18B of the winding 2W1 of the second receiving coil 16B.

[0073] As can further be seen from Fig. 10, a first connection structure 20A1 of the first receiving coil 16A at the first end 14.1 of the receiving structure 14E comprises a via DK which connects a section of the first loop structure 18A arranged in a lower or second level of the circuit carrier 11 to a section of the first loop structure 18A arranged in the upper or first level, and a straight conductor track piece 22 which is arranged in the upper or first level and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1W1 and with a second end to a contact point 24 of the first loop structure 18A of the winding 1W1 of the first receiving coil 16A.

[0074] As can be further seen from Fig. 10, a second connection structure 20B1 of the first receiving coil 16A comprises at a second end 14.2 of the receiving structure 14E a straight conductor track piece 22 which is arranged in the upper or first level of the circuit carrier 11 and is connected with a first end to a contact point 24 of the second loop structure 18B of the winding 1W1 of the first receiving coil 16A and with a second end to a contact point 24 of the first loop structure 18A of the winding 1W1 of the first receiving coil 16A.

[0075] As can further be seen from Fig. 10, the contour of the winding 1 W1 of the first receiving coil 16A at the second end region 14.2 of the receiving structure 14E and the contour of the winding 2W1 of the second receiving coil 16B at the first end region 14.1 of the receiving structure 14E are geometrically congruent or identical. In addition, the contour of the winding 1 W1 of the first receiving coil 16A at the first end region 14.1 of the receiving structure 14E and the contour of the winding 2W1 of the second receiving coil 16B at the second end region 14.2 of the receiving structure 14E are geometrically congruent or identical.

Claims

Claims 1 . Measured value acquisition device (10) for an inductive sensor arrangement (1), with a circuit carrier (11) which has at least one excitation structure (13) and at least one receiving structure (14), wherein the at least one excitation structure (13) comprises at least one excitation coil (13A) with at least one turn, which surrounds the at least one receiving structure (14) on both sides, wherein the at least one receiving structure (14) comprises at least two receiving coils (16) with at least one turn (1 W1, 1 W2, 1 W3, 2 W1, 2 W2, 2 W3), wherein contour profiles of the at least one turn (1 W1, 1 W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) are each designed such that a largest offset voltage in terms of magnitude of the offset voltages occurring at the at least two receiving coils (16), which are induced by the at least one excitation structure (13), has a value which is smaller than a possible maximum value due to the design.

2. Measured value acquisition device (10) according to claim 1, characterized in that the maximum values ​​of the absolute values ​​of the offset voltages occurring in two receiving coils (16) of the at least one receiving structure (14) are equal and not equal to zero.

3. Measured value acquisition device (10) according to claim 1 or 2, characterized in that the contours of the at least one winding (1W1, 1W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) are geometrically congruent at the end regions (14.1, 14.2) of the at least one receiving structure (14).

4. Measured value acquisition device (10) according to one of claims 1 to 3, characterized in that the at least two receiving coils (16) have a predetermined phase shift (ds) with respect to one another.

5. Measured value acquisition device (10) according to one of claims 1 to 4, characterized in that a single turn (1 W1, 1 W2, 1 W3, 2 W1, 2 W2, 2 W3) of the at least two receiving coils (16) each has two loop structures (18A, 18B) which form the contour of the at least one turn (1 W1, 1 W2, 1 W3, 2 W1, 2 W2, 2 W3) of the corresponding receiving coil (16).

6. Measured value acquisition device (10) according to claim 5, characterized in that the two loop structures (18A, 18B) of the individual windings (1W1, 1W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) each have a plurality of loop sections (SA) and are formed in at least two levels of the circuit carrier (11), wherein sections of the individual loop structures (18A, 18B) arranged in different levels of the circuit carrier (11) are electrically connected to one another via vias (DK).

7. Measured value acquisition device (10) according to claim 6, characterized in that the two loop structures (18A, 18B) of the individual windings (1W1, 1W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) have a phase shift of 180° and opposite flow directions to one another.

8. Measured value acquisition device (10) according to one of claims 5 to 7, characterized in that the two loop structures (18A, 18B) of the individual windings (1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) each correspond to a section (5) of a mathematical oscillation with at least one period.

9. Measured value acquisition device (10) according to claim 8, characterized in that the mathematical oscillation has a sinusoidal shape or a rectangular shape or a triangular shape or a trapezoidal shape or a mixed shape.

10. Measured value acquisition device (10) according to one of claims 1 to 9, characterized in that the at least two receiving coils (16) each have at least two windings (1 W1 , 1 W2, 1 W3, 2W1 , 2W2, 2W3) which are electrically connected in series and are arranged offset from one another by a predetermined distance (dw).

11. Measured value acquisition device (10) according to claim 10, characterized in that ends of the individual loop structures (18A, 18B) of the at least two windings (1W1, 1W2, 1W3, 2W1, 2W2, 2W3) of the at least two receiving coils (16) at the end regions (14.1, 14.2) of the at least one receiving structure (14) are each connected to one another via at least one connecting structure (20) in such a way that an electrical series connection of the at least two windings (1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3) and / or a reversal of a flow direction within one of the at least two turns (1 W1, 1 W2, 1 W3, 2W1, 2W2, 2W3).

12. Inductive sensor arrangement (1) for detecting a movement of a movable body, comprising at least one coupling device (3) and a measured value acquisition device (10), which is designed according to one of claims 1 to 11, wherein the at least one coupling device (3) or the measured value acquisition device (10) is coupled to the movable body whose movement is to be detected, wherein at least one excitation structure (13) is arranged on a circuit carrier (11) of the measured value acquisition device (10), wherein the at least one excitation structure (13) is coupled to at least one evaluation and control circuit (12) which couples a periodic alternating signal into the at least one excitation structure (13) during operation, wherein the at least one coupling device (3) is designed,to influence an inductive coupling between the at least one excitation structure (13) and at least one receiving structure (14) of the measured value acquisition device (10), wherein the at least one evaluation and control unit (12) is designed to receive and evaluate signals induced in the at least one receiving structure (14) and to determine a current relative position of the movable, Coupling device (3) to the at least one receiving structure (14) and / or to determine a current position of the movable body.

13. Inductive sensor arrangement (1) according to claim 12, characterized in that the movable body performs a rotational movement about a rotary axis or a linear movement.

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