Device for the contactless transmission of data and of energy and for angle measurement

Abstract

A device for contactless transmission of data and energy and for angle measurement, including a first disk-shaped unit and a second disk-shaped unit, which move in relation to one another around a shared rotational axis and are opposite to one another axially spaced apart with respect to the rotational axis. The first disk-shaped unit including a first annular disk-shaped recess, and the second disk-shaped unit including a first annular disk-shaped recess, which is opposite to the first annular disk-shaped recess of the first disk-shaped unit radially spaced apart with respect to the rotational axis. The first disk-shaped unit includes at least one second annular disk-shaped unit situated concentrically to the first annular disk-shaped recess of the first disk-shaped unit, and the second disk-shaped unit includes at least one second annular disk-shaped recess situated concentrically to the first annular disk-shaped recess of the second disk-shaped unit.

Claims

1. A device for contactless transmission of data and of energy and for angle measurement, comprising: a first disk-shaped unit and a second disk-shaped unit, which move in relation to one another around a shared rotational axis and are opposite to one another axially spaced apart with respect to the rotational axis; wherein the first disk-shaped unit includes a first annular disk-shaped recess, wherein the second disk-shaped unit including a first annular disk-shaped recess, which is opposite to the first annular disk-shaped recess of the first disk-shaped unit radially spaced apart with respect to the rotational axis, wherein the first disk-shaped unit includes at least one second annular disk-shaped unit situated concentrically to the first annular disk-shaped recess of the first disk-shaped unit, wherein the second disk-shaped unit includes at least one second annular disk-shaped recess situated concentrically to the first annular disk-shaped recess of the second disk-shaped unit, wherein at least one component for energy transmission, and/or at least one component for data transmission, and/or at least one component for angle measurement is situated in each case in the first and at least one second annular disk-shaped recess of the first disk-shaped unit, wherein the at least one component for data transmission of the first disk-shaped unit is situated in the annular disk-shaped recess of the first disk-shaped unit which has a smallest radial distance to the rotational axis, and wherein the at least one component for angle measurement of the first disk-shaped unit is situated in the annular disk-shaped recess of the first disk-shaped unit which has a greatest radial distance to the rotational axis.

2. The device as recited in claim 1, wherein the at least one second annular disk-shaped recess of the first disk-shaped unit is opposite to one of the at least one second annular disk-shaped recesses of the second disk-shaped unit radially spaced apart with respect to the rotational axis.

3. The device as recited in claim 1, wherein the first disk-shaped unit is constructed in one piece, and/or the second disk-shaped unit is constructed in one piece.

4. The device as recited in claim 1, wherein the first disk-shaped unit and/or the second disk-shaped unit is made up of a magnetic material.

5. The device as recited in claim 1, the first disk-shaped unit and/or the second disk-shaped unit is made up of ferrite.

6. The device as recited in claim 1, wherein the first disk-shaped unit and the second disk-shaped unit are situated spaced apart in relation to one another in such a way that an air gap is located between the first disk-shaped unit and the second disk-shaped unit.

7. The device as recited in claim 1, wherein at least one component for energy transmission, and/or at least one component for data transmission, and/or at least one component for angle measurement is situated in each case in the first and at least one second annular disk-shaped recess of the second disk-shaped unit.

8. The device as recited in claim 7, wherein: (i) the at least one component for energy transmission of the first disk-shaped unit is opposite to the at least one component for energy transmission of the second disk-shaped unit radially spaced apart with respect to the rotational axis, and/or (ii) the at least one component for data transmission of the first disk-shaped unit is opposite to the at least one component for data transmission of the second disk-shaped unit radially spaced apart with respect to the rotational axis, and/or (iii) the at least one component for angle measurement of the first disk-shaped unit is opposite to the at least one component for angle measurement of the second disk-shaped unit radially spaced apart with respect to the rotational axis.

9. The device as recited in claim 1, wherein the at least one component for energy transmission of the first disk-shaped unit is situated in the annular disk-shaped recess of the first disk-shaped unit, which has an average radial distance to the rotational axis, lying between the smallest radial distance to the rotational axis and the greatest radial distance to the rotational axis.

10. The device as recited in claim 1, wherein the first disk-shaped unit includes a recess along the rotational axis, and/or the second disk-shaped unit includes a recess along the rotational axis, wherein an electric motor configured to generate a relative movement of the first disk-shaped unit and the second disk-shaped unit in relation to one another is situated in the recess of the first disk-shaped unit and/or in the recess of the second disk-shaped unit.

11. A LIDAR sensor including a device for contactless transmission of data and energy and for angle measurement, comprising: a first disk-shaped unit; and a second disk-shaped unit, wherein the first disk-shaped unit and the second disk-shaped unit move in relation to one another around a shared rotational axis and are opposite to one another axially spaced apart with respect to the rotational axis; wherein the first disk-shaped unit includes a first annular disk-shaped recess, wherein the second disk-shaped unit including a first annular disk-shaped recess, which is opposite to the first annular disk-shaped recess of the first disk-shaped unit radially spaced apart with respect to the rotational axis, wherein the first disk-shaped unit includes at least one second annular disk-shaped unit situated concentrically to the first annular disk-shaped recess of the first disk-shaped unit, and wherein the second disk-shaped unit includes at least one second annular disk-shaped recess situated concentrically to the first annular disk-shaped recess of the second disk-shaped unit, wherein at least one component for energy transmission, and/or at least one component for data transmission, and/or at least one component for angle measurement is situated in each case in the first and at least one second annular disk-shaped recess of the first disk-shaped unit, wherein the at least one component for data transmission of the first disk-shaped unit is situated in the annular disk-shaped recess of the first disk-shaped unit which has a smallest radial distance to the rotational axis, and wherein the at least one component for angle measurement of the first disk-shaped unit is situated in the annular disk-shaped recess of the first disk-shaped unit which has a greatest radial distance to the rotational axis.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) An exemplary embodiment of the present invention is explained in greater detail hereafter on the basis of the figures. Identical reference numerals in the figures identify identical or identically acting elements.

(2) FIG. 1 shows a side view of a device according to the present invention.

(3) FIG. 2 shows the view of a disk-shaped unit of the device diagonally from above.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

(4) FIG. 1 shows device 100 in a side view by way of example. Device 100 may be part of a LIDAR sensor, for example, which may include a stator 101 and a rotor 102 as shown. In this way, a unit rotatable around rotational axis 103 results. First disk-shaped unit 105 may be situated on stator 101. First disk-shaped unit 105 is constructed in one piece in the example shown. First disk-shaped unit 105 may be made up of a magnetic material, in particular ferrite. Second disk-shaped unit 106 may be situated on rotor 102. Second disk-shaped unit 106 is constructed in one piece in the example shown. Second disk-shaped unit 106 may be made up of a magnetic material, in particular ferrite. First disk-shaped unit 105 and second disk-shaped unit 106 are opposite to one another with axial spacing with respect to rotational axis 103. First disk-shaped unit 105 and second disk-shaped unit 106 may move in relation to one another around shared rotational axis 103. Air gap 107 is located between first disk-shaped unit 105 and second disk-shaped unit 106. First disk-shaped unit 105 includes a recess 115 along rotational axis 103. Second disk-shaped unit 106 includes a recess 116 along rotational axis 103. An electric motor 104 for generating a relative movement of first disk-shaped unit 105 and second disk-shaped unit 106 in relation to one another is situated in recess 115 and in recess 116. First disk-shaped unit 105 and second disk-shaped unit 106 may be constructed identically or, identically except for recesses 115 and 116.

(5) First disk-shaped unit 105 and second disk-shaped unit 106 each include three annular disk-shaped recesses in the example shown. Each annular disk-shaped recess may be seen twice due to the side view of device 100. First disk-shaped unit 105 includes a first annular disk-shaped recess 108 and the two second annular disk-shaped recesses 109-1 and 109-2, which are each situated concentrically in relation to first annular disk-shaped recess 108. Second disk-shaped unit 106 includes a first annular disk-shaped recess 110 and two second annular disk-shaped recesses 111-1 and 111-2, which are each situated concentrically in relation to first annular disk-shaped recess 110.

(6) FIG. 2 shows the view of disk-shaped unit 105 of device 100 diagonally from above. Disk-shaped unit 105 has radius 204. Recess 115 of disk-shaped unit 105, in which motor 104 is situated, is again visible from this perspective. Disk-shaped unit 105 is designed to be rotatable around rotational axis 103. Furthermore, first annular disk-shaped recess 108 and two second annular disk-shaped recesses 109-1 and 109-2 of disk-shaped unit 105 are also apparent. In this case, first annular disk-shaped recess 108 has smallest radial distance 201 to rotational axis 103. Distance 201 of the outer ring of first annular disk-shaped recess 108 is plotted purely by way of example in this case. The one second annular disk-shaped recess 109-2 has greatest radial distance 202 to rotational axis 103. Distance 202 of the outer ring of annular disk-shaped recess 109-2 is also plotted here purely by way of example. Other second annular disk-shaped recess 109-1 has an average distance 203 to rotational axis 103. Average distance 203 lies between smallest radial distance 201 of annular disk-shaped recess 108 and greatest radial distance 202 of second annular disk-shaped recess 109-2. Distance 203 of the outer ring of annular disk-shaped recess 109-1 is also plotted here purely by way of example.

(7) As is apparent from FIG. 1, an identical image would result in a view of second disk-shaped unit 106 of device 100 diagonally from above. First annular disk-shaped recess 110 of second disk-shaped unit 106 has the smallest radial distance to rotational axis 103. As is apparent, first annular disk-shaped recess 110 of second disk-shaped unit 106 has the identical radial distance to rotational axis 103 as first annular disk-shaped recess 108 of first disk-shaped unit 105. First annular disk-shaped recess 108 of first disk-shaped unit 105 is opposite to first annular disk-shaped recess 110 of second disk-shaped unit 106 radially spaced apart with respect to the rotational axis.

(8) The one second annular disk-shaped recess 111-2 has the greatest radial distance to rotational axis 103. As is apparent, the one second annular disk-shaped recess 111-2 of second disk-shaped unit 106 has the identical radial distance to rotational axis 103 as the one second annular disk-shaped recess 109-2 of first disk-shaped unit 105. The one second annular disk-shaped recess 109-2 of first disk-shaped unit 105 is opposite to the one second annular disk-shaped recess 111-2 of second disk-shaped unit 106 radially spaced apart with respect to the rotational axis.

(9) Other second annular disk-shaped recess 111-1 has an average radial distance to rotational axis 103. As is apparent, other second annular disk-shaped recess 111-1 of second disk-shaped unit 106 has the identical radial distance to rotational axis 103 as other second annular disk-shaped recess 109-1 of first disk-shaped unit 105. Second annular disk-shaped recess 109-1 of first disk-shaped unit 105 is opposite to second annular disk-shaped recess 111-1 of second disk-shaped unit 106 radially spaced apart with respect to the rotational axis.

(10) It is furthermore apparent in FIG. 1 that further components are situated both in annular disk-shaped recesses 108, 109-1, and 109-2 of first disk-shaped unit 105 and in annular disk-shaped recesses 110, 111-1, and 111-2 of second disk-shaped unit 106. These may each be at least one component for energy transmission 113, at least one component for data transmission 112, and/or at least one component for angle measurement 114. Each component may be made inductive and/or magnetic.

(11) As shown in the example, it is particularly advantageous if the at least one component for data transmission 112 is situated in first annular disk-shaped recess 108 of first disk-shaped unit 105 and/or in first annular disk-shaped recess 110 of second disk-shaped unit 106, which each have the smallest distance to rotational axis 103. At least one component for energy transmission 113 is advantageously situated in each case in annular disk-shaped recess 109-1 of first disk-shaped unit 105 and/or in annular disk-shaped recess 111-2 of second disk-shaped unit 106, which each has an average distance to rotational axis 103. At least one component for angle measurement 114 is situated in each case in annular disk-shaped recess 109-2 of first disk-shaped unit 105 and/or in annular disk-shaped recess 111-2 of second disk-shaped unit 106, which each have the greatest distance to rotational axis 103. Components having an identical function and/or a function associated with one another are accordingly situated in first disk-shaped unit 105 and in second disk-shaped unit 106 in such a way that they are opposite to one another radially spaced apart with respect to rotational axis 103. The components having an identical function and/or a function associated with one another may be identical in this case. If the components having an identical function and/or a function associated with one another are not identical, the transmission may thus take place in both directions, both from first disk-shaped unit 105 to second disk-shaped unit 106 and from second disk-shaped unit 106 to first disk-shaped unit 105. It may be presumed for the energy transmission that it takes place from the static part into the rotating part. The components for energy transmission 113 may include one or multiple coil pairs for this purpose. The data transmission may preferably take place in both directions. The components for data transmission 112 may include identical coils or different coils. The angle measurement may either take place on the side of stator 101 or preferably on the side of rotor 102.

(12) The components in the annular disk-shaped recesses may be connected to further components (not shown here). Such components may be component of a LIDAR sensor. These may be components for modulation of the inductive data transmission, oscillating circuits for energy transmission, active oscillating circuits, or passive components of the angle measurement. These may be active optical components with a modulation. The emitter and/or the receiver of a LIDAR sensor may be situated on the rotor and/or the stator of the LIDAR sensor. The emitter and the receiver of a LIDAR sensor may be active on one side, i.e., on the rotor or the stator, and may be a passive reflector on the other side. The disk-shaped unit may advantageously increase the mechanical stability, protect from ambient light, and/or protect from contaminants.