CN105637325A

CN105637325A - Sensor assembly for detecting angles of rotation on a rotating component in a vehicle

Info

Publication number: CN105637325A
Application number: CN201480056708.7A
Authority: CN
Inventors: S·弗莱舍尔; R·哈斯; F·亨里齐
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2013-10-18
Filing date: 2014-09-22
Publication date: 2016-06-01
Anticipated expiration: 2034-09-22
Also published as: JP6192826B2; DE102013221193A1; CN105637325B; JP2016533494A; WO2015055382A1

Abstract

The invention relates to a sensor assembly (1, 1A) for detecting angles of rotation on a rotating component (10) in a vehicle, wherein the rotating component (10) is coupled to at least one primary measuring element (20, 30), which, in connection with at least one sensor (40, 50), produces a signal representing the angle of rotation of the rotating component (10). According to the invention, an angle-of-rotation detector (3) detects, by means of a first primary measuring element (20), which is coupled to the rotating component (10) in a rotationally fixed manner, and by means of at least one sensor designed as an angle-of-rotation sensor (50), an angular position of the rotating component (10) in the range of a 360 DEG rotation, and a revolution detector (5) determines, by means of a second primary measuring element (30), which is coupled to the rotating component (10) in an axially movable manner and which forms a motion converter together with the rotating component (10), which motion converter converts the rotation (12) of the rotating component (10) into an axial translation (14) of the second primary measuring element (30) in relation to the rotating component (10), and by means at least one sensor designed as a distance sensor (40), a traveled axial distance of the second primary measuring element (30), which traveled axial distance represents a number of revolutions of the rotating component (10), wherein a current angle of rotation of the rotating component (10) can be determined from the angular position detected by the angle-of-rotation detector (3) and the number of revolutions determined by the revolution detector (5).

Description

For detecting the sensor cluster of the rotational angle of the rotary part in vehicle

Technical field

The present invention is with the sensor cluster of the rotational angle for detecting rotary part in vehicle of the type according to independent claims 1 for starting point.

Background technology

In known steering angle sensor, the counter wheel for determining the revolution of steering wheel scans by means of magnetic field sensor contactlessly. This type of system has as a drawback that, i.e. must provide quiescent current when cutting off igniting, in order to may recognize that the steering wheel torsion when cutting off igniting. In the long-term untapped situation of vehicle, this causes the not desired emptying of Vehicular battery. If not providing such quiescent current, when have rotated steering wheel when cutting off igniting or disconnecting battery, steering angle no longer can be determined clearly.

Open source literature DE102008011448A1 such as describes a kind of assembly for detecting rotational angle. Described assembly includes transmitter and sensor, and sensor depends on that the change detection of the physical quantity produced by transmitter is can the signal of number evaluation by the rotational angle change of rotary part. Rotary part has that at least one couples at its periphery place, rotated by the rotation of this rotary part, less girth, preferably with the satellite portion of angular transducer, this satellite portion drives the same cycloid disc rotated or inner cycloidal gear via the hypocycloid drive mechanism coupled vertically, its rotating speed is so lowered by hypocycloid drive mechanism, that is, the thus revolution of rotary part and determining through the available rotary sensor system of the pivotal absolute steering angle of multi-turn of steering spindle.

Summary of the invention

And there is the having the advantage that according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle of feature described in independent claims 1, that is, the actual rotational angle of rotary part utilizes the two kinds of contactless measuring methods separated being preferably based on eddy current effect to determine. The 360 �� of rotations of detection of the first measuring method, and the second measuring method serves as " redundancy enumerator ", it turns round via the multi-turn apart from change detection rotary part. By rotational angle to be determined being divided into rotation and distance change, can particularly simple realize higher resolution according to the embodiment of sensor of the invention assembly. Additionally, rotate and height change by rotational motion being transformed into machinery, even if being also constantly present clear and definite turned position in the pivotal situation of multi-turn of rotary part. Advantageously, this rotational motion is retained in rotation and the height change of the change of machinery, thus also providing for correct absolute rotational angle after cutting off igniting or disconnecting battery or when electronic installation lost efficacy. The particularly reliable identification of particularly reliable operation or rotational angle thus can be realized by means of eddy current effect. Another advantage can be the simplification of mechanical aspects, this can cause cost savings, because need not with the little gear of the toothing being engaged with each other or magnet in the embodiment according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle, this can cause cost savings. Additionally, the embodiment according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle can work in an advantageous manner due to the minimizing of movable component low noise very much. Preferably, can be used for determining the steering angle of vehicle according to sensor of the invention assembly. At this, rotary part is preferably implemented as the steering column of vehicle or is embodied as the sleeve pipe not being connected with steering column rotatably.

Embodiments of the present invention provide the sensor cluster of the rotational angle of a kind of rotary part for detecting in vehicle. This rotary part and at least one measured value transmitter couple, and this measured value transmitter produces to represent the signal of the rotational angle of rotary part in conjunction with at least one sensor. According to the present invention, rotational angle detector utilizes the first measured value transmitter not coupled with rotary part rotatably and at least one sensor being embodied as rotation angle sensor to detect rotary part angle position in 360 �� of range of rotation. In addition, rotary detector utilizes the second measured value transmitter, and (this second measured value transmitter couples with rotary part and is configured to converter together with rotary part with may be axially movable, the rotation of rotary part is converted to the second measured value transmitter and rotates against the axial translation of parts by this converter) and at least one sensor being embodied as range sensor determine the axial displacement of process of the second measured value transmitter, this axial displacement represents the revolution of rotary part. At this, the actual rotational angle of rotary part can be determined by the angle position detected by rotational angle detector with by the determined revolution of rotary detector.

The favourable improving countermeasure of that can realize rotational angle for detecting the rotary part in vehicle by the measure illustrated in the dependent claims and improvement project, illustrated in independent claims 1 sensor cluster.

Particularly advantageously, in measured value transmitter is embodied as the bowl-type disk with matrix, and this matrix has central opening and recess, and in measured value transmitter is embodied as the disk with matrix, and this matrix has central opening. At this, the measured value transmitter being embodied as disk is so implemented, i.e. at least can realize partly sinking in the recess of the measured value transmitter being embodied as bowl-type disk. Preferably, the first measured value transmitter and the second measured value transmitter can be arranged nested with one anotherly. This is capable of the compact configuration according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle in an advantageous manner.

According in the favourable design of sensor of the invention assembly, the matrix of the measured value transmitter coupled with rotary part with may be axially movable can axially guide in the place of wall portion of central opening and/or the outer circumference at this matrix and/or the inwall place at recess. Rotary part such as can have external screw thread, and the matrix of the measured value transmitter coupled with rotary part with may be axially movable such as can have the corresponding female thread being incorporated in central opening, so that measured value transmitter is maybe screwed on rotary part and can axially guide. External screw thread such as can directly be cut on rotary part. Directly cut in rotary part by external screw thread, it is possible to favourable mode reduces the quantity of the required component for rotational motion converts to rectilinear motion, and this can cause cost savings. Alternatively, can shift onto vertically on rotary part with externally threaded sleeve pipe and not be connected with rotary part rotatably. Can realize in an advantageous manner making the size of measured value transmitter be matched with rotary part or steering column by sleeve pipe. Alternatively, the matrix of the measured value transmitter being embodied as bowl-type disk can have female thread at the inwall place of recess, and the matrix being embodied as the measured value transmitter of disk can have the external screw thread of correspondence in its outer circumference, thus the axial relative motion having guiding that can realize between measured value transmitter.

Advantageously can being provided with at least one anchor log, it stops the rotational motion of measured value transmitter that may be axially movable and makes this measured value transmitter can axially-movable. Rotation in order to avoid this measured value transmitter, such as at least two is embodied as the anchor log of guide rod and may be lead through the breach in the matrix of the measured value transmitter that may be axially movable spaced apart accordingly, and this anchor log axially guides measured value transmitter and stops the rotational motion of measured value transmitter.

According in another favourable design of sensor of the invention assembly, sensor can be embodied as the current vortex sensor of the corresponding search coverage of the search coil with predetermined quantity and predetermined quantity, and it determines distance or rotational angle via the change of associated magnetic field. Preferably, at least one is embodied as the coil of sensor of rotation angle sensor and at least one is embodied as the coil arrangement of sensor of range sensor on common coil brace. Search coverage is formed by conductive material or ferromagnetic material, wherein corresponding coil-induced go out eddy current. The quantity of coil and search coverage and shape can be matched with existing mounting condition in an advantageous manner.

According in another favourable design of sensor of the invention assembly, the search coil of sensor can be arranged in coil brace with being distributed in multiple positions. Thus can obtain higher sensitivity in an advantageous manner, i.e. by the bigger coil inductance connected in multiple positions.

According in another favourable design of sensor of the invention assembly, assessment and control unit can simultaneously or assess the coil of at least one rotation angle sensor and/or at least one range sensor in a predefined order. This makes it possible to compensate interference effect (such as variations in temperature etc.) in an advantageous manner. Additionally, use multiple sensor or coil can realize determining redundantly the rotational angle of rotary part in an advantageous manner.

Accompanying drawing explanation

Embodiments of the invention shown in the drawings, and in the following description this embodiment is further elaborated. In the accompanying drawings, identical accompanying drawing labelling represents the component or element of implementing same or like function. Wherein:

Fig. 1 shows the cross section diagram of the schematically perspective of the first embodiment according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle in primary importance.

Fig. 2 shows the cross section diagram of the schematically perspective of the first embodiment according to sensor of the invention assembly of Fig. 1 in the second position.

Fig. 3 shows the schematic top view of the first embodiment of the coil brace according to sensor of the invention assembly for Fig. 1 and Fig. 2.

Fig. 4 shows the schematic upward view of the first embodiment of the first measured value transmitter according to sensor of the invention assembly for Fig. 1 and Fig. 2 and the second measured value transmitter.

Fig. 5 shows the schematic top view of the second embodiment of the coil brace according to sensor of the invention assembly for Fig. 1 and Fig. 2.

Fig. 6 shows the schematic upward view of the second embodiment of the first measured value transmitter according to sensor of the invention assembly for Fig. 1 and Fig. 2 and the second measured value transmitter.

Fig. 7 shows the cross section diagram of the schematically perspective of second embodiment according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle in primary importance.

Fig. 8 shows the cross section diagram of the schematically perspective of second embodiment according to sensor of the invention assembly of Fig. 7 in the second position.

Fig. 9 shows the schematic top view of the first embodiment of the coil brace according to sensor of the invention assembly for Fig. 7 and Fig. 8.

Figure 10 shows the schematic upward view of the first embodiment of the first measured value transmitter according to sensor of the invention assembly for Fig. 7 and Fig. 8 and the second measured value transmitter.

Figure 11 shows the schematic top view of the second embodiment of the coil brace according to sensor of the invention assembly for Fig. 7 and Fig. 8.

Figure 12 shows the schematic upward view of the second embodiment of the first measured value transmitter according to sensor of the invention assembly for Fig. 7 and Fig. 8 and the second measured value transmitter.

Figure 13 shows the cross section diagram of the schematically perspective of the 3rd embodiment according to sensor of the invention assembly of the rotational angle for detecting the rotary part in vehicle in primary importance.

Figure 14 shows the cross section diagram of the schematically perspective of the 3rd embodiment according to sensor of the invention assembly of Figure 13 in the second position.

Detailed description of the invention

As visible by Fig. 1 to Figure 14, the embodiment according to sensor of the invention assembly 1,1A, 1B, 1C for detecting the rotational angle of the rotary part 10 in vehicle includes at least one measured value transmitter 20,30, and it produces to represent the signal of the rotational angle of rotary part 10 in conjunction with at least one sensor 40,50.

According to the present invention, rotational angle detector 3 utilizes the first measured value transmitter 20 not coupled with rotary part 10 rotatably and at least one sensor being embodied as rotation angle sensor 50 to detect the rotary part 10 angle position in 360 �� of range of rotation. In addition, rotary detector 5 utilizes the second measured value transmitter 30, and (it couples with rotary part 10 and is configured to converter together with rotary part 10 with may be axially movable, rotating of rotary part 10 12 is converted to the second measured value transmitter 30 and rotates against the axial translation 14 of parts 10 by this converter) and utilize at least one sensor being embodied as range sensor 40 to determine the axial displacement of process of the second measured value transmitter 30, this axial displacement represents the revolution of rotary part 10. The actual rotational angle of rotary part 10 is determined by the angle position detected by rotational angle detector 3 and the revolution determined by rotary detector 5.

Embodiment according to sensor of the invention assembly 1,1A, 1B, 1C such as can be used as steering angle sensor to determine the steering angle of vehicle, wherein, for instance should determine that the actual rotational angle of the steering column of vehicle. In embodiment shown in these, rotary part 10 is corresponding to sleeve pipe 16,16A, 16B, 16C, and it is such as shifted onto vertically as on the steering column of rotary part and be not connected with steering column rotatably.

As further visible by Fig. 1 to Figure 14, in measured value transmitter 20,30 one is embodied as bowl-type disk 20B, 20C, 30A with matrix 22,32, this matrix has central opening 26,36 and recess 24,34, and in measured value transmitter 20,30 is embodied as disk 20A, 30B, the 30C with matrix 22,32, this matrix has central opening 26,36. At this, the measured value transmitter 20,30 being embodied as disk 20A, 30B, 30C is so implemented, i.e. can at least realize partly sinking in the recess 24,34 of the measured value transmitter 20,30 being embodied as bowl-type disk 20B, 20C, 30A. Thus, first measured value transmitter 20 and the second measured value transmitter 30 are saved installing space ground and are arranged nested with one anotherly, such that it is able to favourable mode realizes the compact configuration according to sensor of the invention assembly 1,1A, 1B, 1C of the rotational angle for detecting the rotary part 10 in vehicle.

In the illustrated embodiment, sensor 40,50 is embodied as the current vortex sensor of the corresponding search coverage 44,54 of the search coil 42,52 (it is arranged on common coil brace 60) with predetermined quantity and predetermined quantity, and search coverage substantially constructs with corresponding search coil 42,52 alignedly at the first measured value transmitter 20 or the second measured value transmitter 30 place.

This means, the search coil 42 of rotation angle sensor 40 is arranged on coil brace 60 with corresponding search coverage 44 with axially overlapping, and the search coil 52 of range sensor 50 is arranged on coil brace 60 with corresponding search coverage 54 with axially overlapping in other words. In the illustrated embodiment, coil brace 60 is embodied as the disk that the position with central opening 62 is fixing, and rotary part 10 extends through this central opening. The magnetic field 46,56 produced between search coil 42,52 and search coverage 44,54 by current vortex sensor 40,50 is affected by the axially-movable 14 of the rotational motion of the first measured value transmitter 20 or the second measured value transmitter 30 and the distance change being associated with this, thus such as in conjunction with the detectable corresponding frequency change of corresponding unshowned fixed capacity, and frequency change can by for determining rotational angle and/or determining that the assessment of distance and control unit 70 are assessed. The coil 42,52 of current vortex sensor 40,50 can be based upon in silicon in micro-machining or directly realize on the coil brace 60 be preferably implemented as circuit board, wherein, is directly arranged on circuit board and can have further cost advantage. Different coil shapes can be realized at this, for instance circular or rectangle, but more complicated coil shape also can be proved to be advantageous for. Additionally, the equally possible bigger shape (cm range) of coil 42,52 is made. The coil 42,52 of current vortex sensor 40,50 also can in the circuit board and be distributed in multiple position in silicon, in order to obtains higher sensitivity, say, that by the bigger coil inductance connected in multiple positions. Assessment and control unit 70 can simultaneously or assess the coil 42,52 of at least one rotation angle sensor 40 and/or at least one range sensor 50 in a predefined order.

As further visible by Fig. 1 and Fig. 2, in the first embodiment according to sensor of the invention assembly 1A, the first measured value transmitter 20 is embodied as disk 20A, and it is not connected with the rotary part 10 being embodied as sleeve pipe 16A rotatably. In the illustrated embodiment, the matrix 22A of the first measured value transmitter 20 being embodied as disk 20A is press fit on the rotary part 10 being embodied as sleeve pipe 16A with not relatively turnable connection of central opening 26 to set up. In the first embodiment according to sensor of the invention assembly 1A, the second measured value transmitter 30 is embodied as bowl-type disk 30A. As further visible by Fig. 1 and Fig. 2, external screw thread 16.1 is cut in the rotary part 10 being embodied as sleeve pipe 16A, and the matrix 32A being embodied as the second measured value transmitter 30 of bowl-type disk 30A utilizes the female thread 36.2 introduced at the place of wall portion 36.1 of central opening 36 be screwed on external screw thread and axially guide. The primary importance that figure 1 illustrates according to sensor of the invention assembly 1A is corresponding to the backstop that turns clockwise (Rechtsanschlag) of rotary part 10, wherein, between the end face 38 of the second measured value transmitter 30 and the surface of coil brace 60A, there is ultimate range h1. The second position shown in figure 2 according to sensor of the invention assembly 1A rotates backstop (Linksanschlag) counterclockwise corresponding to rotary part 10, wherein, between the end face 38 of the second measured value transmitter 30 and the surface of coil brace 60A, there is minimum range h2. In the position shown in figure 2 according to sensor of the invention assembly 1A, it is embodied as in the matrix 22A of the first measured value transmitter 20 of the disk 20A recess 34 sinking to the second measured value transmitter 30 being embodied as bowl-type disk 30A. In order to realize sinking to of no problem, the neighboring 22.1 of the matrix 22A of the first measured value transmitter 20 relative to the inwall 34.1 of the recess 34 in the matrix 32A of the second measured value transmitter 30 have can be predetermined distance. In order to stop the rotational motion of the second measured value transmitter 30 that may be axially movable and discharge axially-movable 14, it is provided with at least one unshowned anchor log.

As seen from Figure 3, that the first embodiment of coil brace 60A is arranged with including four central openings 62 distributions around the coil brace 60A being embodied as disk, for rotation angle sensor 40A the first search coil 42A and be arranged in coil brace 60A edge, annular, for the search coil 52A of range sensor 50A. As is made clear by figure 4, the first embodiment of the first measured value transmitter 20A include being adjacent to the central opening 26 of matrix 22A, be embodied as annulus section, for the first search coverage 44A of rotation angle sensor 40A. The first embodiment of the second measured value transmitter 30 include being embodied as the annulus of annular, for the second search coverage 54A of range sensor 50A.

As seen from Figure 5, second embodiment of coil brace 60A includes search coil 52A that four central openings 62 around coil brace 60A are arranged with being distributed, for the first search coil 42A of rotation angle sensor 40A and six edges being arranged in coil brace 60A, for range sensor 50A. As seen from Figure 6, second embodiment of the first measured value transmitter 20 include three central openings 26 being adjacent to matrix 22A, be embodied as annulus section, for the first search coverage 44A of rotation angle sensor 40A, its angular relationship each other is not corresponding to integral multiple. Second embodiment of the second measured value transmitter 30 include six be embodied as annulus section, for the second search coverage 54A of range sensor 50A.

As further visible by Fig. 7 and Fig. 8, in the second embodiment according to sensor of the invention assembly 1B, the first measured value transmitter 20 is embodied as bowl-type disk 20B, and it is not connected with the rotary part 10 being embodied as sleeve pipe 16B rotatably. In this embodiment illustrated, the matrix 22B of the first measured value transmitter 20 being embodied as bowl-type disk 20B is pressed onto on the rotary part 10 being embodied as sleeve pipe 16B with not relatively turnable connection of central opening 26 to set up. Second measured value transmitter 30 is embodied as disk 30B in the second embodiment according to sensor of the invention assembly 1B. As further visible by Fig. 7 and Fig. 8, external screw thread 16.1 is cut in the rotary part 10 being embodied as sleeve pipe 16B, and the matrix 32B of the second measured value transmitter 30 being embodied as disk 30B is screwed on this external screw thread with the female thread 36.2 introduced at the place of wall portion 36.1 of central opening 36 and axially guides. The primary importance that figure 7 illustrates according to sensor of the invention assembly 1B is corresponding to the backstop that turns clockwise of rotary part 10, wherein, has ultimate range h1 between the end face 38 and the surface of coil brace 60B of the second measured value transmitter 30. The second position that figure 8 illustrates according to sensor of the invention assembly 1B rotates backstop counterclockwise corresponding to rotary part 10, wherein, has minimum spacing from h2 between the end face 38 and the surface of coil brace 60B of the second measured value transmitter 30. As further visible by Fig. 7 and Fig. 8, it is embodied as in the recess 24 that matrix 32B and the position of the second measured value transmitter 30 of disk 30B independently sink to the first measured value transmitter 20 being embodied as bowl-type disk 20B. In order to realize sinking to or axial movement of no problem, the neighboring 32.1 of the matrix 32B of the second measured value transmitter 30 relative to the inwall 24.1 of the recess 24 in the matrix 22B of the first measured value transmitter 20 have can be predetermined distance. In order to stop the rotational motion of the second measured value transmitter 30 that may be axially movable and discharge axially-movable 14, it is provided with at least one anchor log 7. In the illustrated embodiment, anchor log 7 includes two pins, and it is directed across the corresponding opening in the matrix 32B of the second measured value transmitter 30.

As seen from Figure 9, that the 3rd embodiment of coil brace 60B is arranged with including six edges' distributions at the coil brace 60B being embodied as disk, for the first search coil 42B of rotation angle sensor 40B and the second search coil 52B that the central opening 62 around coil brace 60B of annular is arranged, for range sensor 50B. As seen from Figure 10, the 3rd embodiment of the first measured value transmitter 20 include one be embodied as annulus section, for the first search coverage 44B of rotation angle sensor 40B. That 3rd embodiment of the second measured value transmitter 30 includes being adjacent to the central opening 36 of matrix 32B, be embodied as annular annulus, for the second search coverage 54B of range sensor 50B.

As seen from Figure 11, the 4th embodiment of coil brace 60B includes the first search coil 42B and coil 52B that four central openings 62 around coil brace 60B are arranged, for range sensor 50B that six edges at coil brace 60B arrange with being distributed, for rotation angle sensor 40B. As seen from Figure 12, the 4th embodiment of the first measured value transmitter 20 include four be embodied as annulus section, for the first search coverage 44B of rotation angle sensor 40B, its angular relationship each other is not corresponding to integral multiple. 4th embodiment of the second measured value transmitter 30 include four central openings 26 being adjacent to matrix 22B, be embodied as annulus section, for the second search coverage 54B of range sensor 50B.

As further visible by Figure 13 and Figure 14, in the 3rd embodiment according to sensor of the invention assembly 1C, first measured value transmitter 20 is similar to the second embodiment and is embodied as bowl-type disk 20C equally, and it is not connected with the rotary part 10 being embodied as sleeve pipe 16C rotatably. In this embodiment illustrated, the matrix 22C of the first measured value transmitter 20 being embodied as bowl-type disk 20C is pressed onto on the rotary part 10 being embodied as sleeve pipe 16C with not relatively turnable connection of central opening 26 to set up. In the 3rd embodiment according to sensor of the invention assembly 1C, the second measured value transmitter 30 is similar to first embodiment and is embodied as disk 30C equally. Being different from the second embodiment, the rotary part 10 being embodied as sleeve pipe 16C does not have external screw thread. The matrix 32C of the second measured value transmitter 30 being embodied as disk 30C has directed at rotary part 10 place being embodied as sleeve pipe 16C with gap with the wall portion 36.1 of central opening 36. In addition, the matrix 22C of the first measured value transmitter 20 being embodied as bowl-type disk 20C has female thread 24.2 at inwall 24.1 place of recess 24, and the external screw thread 32.2 at neighboring 32.1 place being arranged in the matrix 32C of the second measured value transmitter 30 being embodied as disk 30C wherein is screwed into and axially guides. The primary importance that figure 13 illustrates according to sensor of the invention assembly 1C is corresponding to the backstop that turns clockwise of rotary part 10, wherein, has ultimate range h1 between the end face 38 and the surface of coil brace 60C of the second measured value transmitter 30. The second position that figure 14 illustrates according to sensor of the invention assembly 1C rotates backstop counterclockwise corresponding to rotary part 10, wherein, has minimum range h2 between the end face 38 and the surface of coil brace 60C of the second measured value transmitter 30. As further visible by Figure 13 and Figure 14, it is embodied as in the recess 24 that matrix 32C and the position of the second measured value transmitter 30 of disk 30C independently sink to the first measured value transmitter 20 being embodied as bowl-type disk 20C. In order to stop rotational motion and the release axially-movable 14 of the second measured value transmitter 30 that may be axially movable, it is provided with at least one anchor log 7. In this embodiment illustrated, anchor log 7 is similar to the second embodiment and includes two pins, and it is directed across the corresponding opening in the matrix 32C of the second measured value transmitter 30.

Screw thread (the pivotal range information of multi-turn is detected via this screw thread by range sensor) can design cursorily very much, because accurate angle position (0 ��-360 ��) is determined by rotating by rotation angle sensor. But, the further credible of determined rotational angle can be realized via range information equally and check. Additionally, by coil block is evaluated with the overlapping of multiple search coverages and search coil and the independent possible reading of control unit and assess the redundancy that can provide rotational angle information. Thus draw multiple variations. It is thus possible, for instance the information about distance change can combine with angle information. Additionally, the coil of varying number can be used. Additionally, coil can simultaneously or sequentially be read (multiplexing). Coil such as can separately be connected with assessment and control unit. Alternatively, coil can completely or partially merge and be then channeled to assessment and control unit via its port.

Embodiments of the present invention provide the sensor cluster of the rotational angle of a kind of rotary part for detecting in vehicle, and it is also always to provide clear and definite position of rotation by rotational motion is transformed into the change in displacement of machinery in the pivotal situation of multi-turn of rotary part. Advantageously, when electronic installation lost efficacy, in the change in displacement position of machinery, draw rotational motion. Due to the change in displacement of machinery, even if also providing for correct absolute rotational angle after cutting off igniting or disconnecting battery, wherein, the particularly reliable identification of particularly reliable operation or rotational angle can be realized simultaneously.

Claims

1. the sensor cluster being used for detecting the rotational angle of the rotary part in vehicle, wherein, described rotary part (10) and at least one measured value transmitter (20,30) couple, this measured value transmitter is in conjunction with at least one sensor (40,50) produce to represent the signal of the rotational angle of described rotary part (10), it is characterized in that, rotational angle detector (3) utilizes the first measured value transmitter (20) that can not couple with described rotary part (10) in relative rotation and at least one sensor being embodied as rotation angle sensor (50) to detect the described rotary part (10) angle position in 360 �� of range of rotation, and rotary detector (5) utilizes the second measured value transmitter (30) and at least one sensor being embodied as range sensor (40) to determine the axial displacement of process of described second measured value transmitter (30), this axial displacement represents the revolution of described rotary part (10), this the second measured value transmitter can couple with described rotary part (10) axially movable, and it is configured to converter together with described rotary part (10), the rotation (12) of described rotary part (10) is converted to the axial translation (14) of the described second relatively described rotary part (10) of measured value transmitter (30) by this converter, wherein, the actual rotational angle of described rotary part (10) can be determined by the angle position detected by described rotational angle detector (3) and the revolution determined by described rotary detector (5).

2. sensor cluster according to claim 1, it is characterized in that, described measured value transmitter (20, 30) in is embodied as with matrix (22, 32) bowl-type disk (20B, 20C, 30A), this matrix has central opening (26, 36) and recess (24, 34), and described measured value transmitter (20, 30) in is embodied as with matrix (22, 32) disk (20A, 30B, 30C), this matrix has central opening (26, 36), wherein, it is embodied as disk (20A, 30B, measured value transmitter (20 30C), 30) implement into can at least realize partly sinking to and be embodied as bowl-type disk (20B, 20C, measured value transmitter (20 30A), 30) recess (24, 34) in.

3. sensor cluster according to claim 1 and 2, it is characterised in that described first measured value transmitter (20) and described second measured value transmitter (30) are arranged nested with one anotherly.

4. sensor cluster according to any one of claim 1 to 3, it is characterized in that, the matrix (32) (36.1) place of wall portion at described central opening (36) of the measured value transmitter (30) that can couple with described rotary part (10) axially movable and/or (32.1) place, neighboring at this matrix and/or axially guide at inwall (34.1) place of described recess (34).

5. sensor cluster according to claim 4, it is characterized in that, described rotary part (10) has external screw thread (16.1), and the corresponding female thread (26.2,36.2) being incorporated in described central opening (26,36) can be had axially movable with the matrix (22,32) of the measured value transmitter (20,30) that described rotary part (10) couples, thus described measured value transmitter (20,30) is screwed onto on described rotary part (10), and guide this measured value transmitter vertically.

6. sensor cluster according to claim 4, it is characterized in that, it is embodied as bowl-type disk (20B, 20C, measured value transmitter (20 30A), 30) matrix (22, 32) at described recess (24, 34) inwall (24.1, 34.1) on there is female thread (24.2, 34.2), and it is embodied as disk (20A, 30B, measured value transmitter (20 30C), 30) matrix (22, 32) in its neighboring (22.1, 32.1) on have correspondence external screw thread (22.2, 32.2), it is thus possible to real presently described measured value transmitter (20, 30) there is the moving axially relative of guiding between.

7. the sensor cluster according to claim 5 or 6, it is characterized in that, be provided with at least one anchor log (7), its stop described can the rotational motion of measured value transmitter (30) axially movable and discharge axially-movable (14).

8. sensor cluster according to any one of claim 1 to 7, it is characterized in that, described sensor (40,50) is embodied as the current vortex sensor of the corresponding search coverage (44,54) of the search coil (42,52) with predetermined quantity and predetermined quantity.

9. sensor cluster according to claim 8, it is characterized in that, at least one coil (42) of sensor being embodied as rotation angle sensor (40) described and the coil (52) of at least one sensor being embodied as range sensor (50) described are arranged on common coil brace (60).

10. sensor cluster according to claim 8 or claim 9, it is characterised in that the search coil (42,52) of described sensor (40,50) is arranged in described coil brace (60) with being distributed in multiple positions.

11. according to Claim 8 to the sensor cluster according to any one of 10, it is characterized in that, assessment and control unit (70) simultaneously or assess the coil (42,52) of at least one rotation angle sensor (40) and/or at least one range sensor (50) in a predefined order.