DE102014004504A1 - Control signal transmission device, actuator and method for transmitting an actuating signal - Google Patents

Abstract

In a control signal transmitting device (1) having a sensor device (3) which is arranged at one end (11) of a signal transmission path (4) formed optical channel (5), wherein the sensor device (3) comprises a light source (7) and a Sensor element (12) for detecting a portion (13) of in the optical channel (5) reflected light (8), it is proposed at an opposite end (10) of the optical channel (5) has an actuating element (2) with a The optical surface (9) is adjustable, in particular deformable, to be arranged between a first setting position and a second setting position, the surface region (9) having a first reflection behavior in the first setting position and a second reflection behavior coming from the second setting position first reflection behavior is different realized.

Description

The invention relates to a control signal transmission device with an actuating element and a sensor device, wherein between the actuating element and the sensor device, a signal transmission path is set and wherein the sensor device is set up for detecting at least one actuating position of the actuating element.

Such devices are known, for example, from controls of actuators. Here, the actuating element is often coupled to a magnet, so that via a formed in a housing wall signal transmission path, the magnetic field of the actuating element is transmitted to a sensor device with a magnetic field sensor to transmit the control position of the actuating element.

In order to securely transmit control information with a magnetic field over the signal transmission path, a comparatively large travel on the control element is required as a rule. It may happen that during operation or after the operation of moisture enters the actuator, so that the actuator is blocked, for example, by freezing the moisture and no longer operable.

The invention further relates to an actuator with a drive unit and a control signal transmission device of the type described.

Particularly in the case of actuators, maintenance of operating functions in harsh environments is also desirable over a longer period of time.

Finally, the invention relates to a method for transmitting a control signal.

The invention has for its object to provide an alternative to the known control signal transmission devices, which is robust ausgestaltetbar against harsh environmental conditions.

To solve this problem, the features of claim 1 are proposed according to the invention. In particular, it is thus proposed according to the invention in a control signal transmission device of the type described above that the signal transmission path is designed as an optical channel, that a light source for generating light in a spectral range is set up, that a surface region reflecting in the spectral range is formed on the control element, and in that the sensor device has a sensor element that is set up to detect a portion of the light generated by the sensor device that is reflected by the surface area via the optical channel. The advantage here is that a transmission of the control signal is made possible via an optical channel, with a supply of the optical channel with light is already changeable by small adjustment paths or changes to the actuator such that information is transferable. Larger travel paths on the control element are dispensable, so that a seal of the control signal transmission device can be reached to the outside, which allows adequate protection against harsh environmental conditions.

In one embodiment of the invention can be provided that the sensor device is designed to irradiate the generated light in the optical channel. Thus, means for irradiating the light are present in the optical channel. The advantage here is that the optical channel is bidirectionally usable in that the generated light to the sensor element and the light reflected at the surface region of the actuating element light to the sensor element can be conducted.

It is particularly advantageous if the adjusting element is arranged at a first end of the optical channel, while the sensor element and / or the light source are arranged at a second end of the optical channel.

It can be provided that the first end and the second end of the optical channel are arranged on opposite sides of a housing wall. The advantage here is that the optical channel bridges the housing wall for signal transmission.

In an embodiment of the invention, it can be provided that the sensor element is set up for the detection of a measured quantity which is dependent on the intensity of the reflected component. For example, the brightness or any other physical quantity can be measurable. In the simplest case, the sensor element can be designed as a photodiode.

In one embodiment of the invention, it may be provided that the surface region has a first reflection behavior in a first adjustment position and a second reflection behavior in a second adjustment position, the second reflection behavior being different from the first reflection behavior. The advantage here is that an intensity of the reflected light in the optical channel can be influenced in a simple manner in order to transmit information about the setting position of the actuating element via the optical channel.

For example, it may be provided that the surface area in one, for example, the already mentioned, first parking position forms beam-collapsing and / or directionally reflective element. The advantage here is that in the first setting position, a high proportion of the generated light is reflected in the optical channel. For example, the surface region may form a concave mirror, which focuses the incoming rays and reflects them in the optical channel.

Alternatively or additionally, it may be provided that the surface area forms a beam-expanding and / or diffusely reflecting element in one, for example the already mentioned, second setting position. The advantage here is that a comparatively small proportion of generated light is reflected in the optical channel. For example, the surface region may form a distorting or bulging mirror, which widens incoming beams and reflects them diffusely, so that only a small portion passes into the optical channel.

In one embodiment of the invention, in which a beam-collimating and / or directionally reflecting element is formed in the first setting position and a beam-expanding and / or diffusely reflecting element is formed in the second setting position, a clear distinction between the first setting position and the second setting position is made by measurement reach the intensity of the reflected light in the optical channel.

In one embodiment of the invention can be provided that the actuator in one, for example, the already mentioned, first control position with a first reflection coefficient and / or reflected in one, for example, the already mentioned, second control position with a second reflection coefficient in the optical channel. The different reflection coefficients can be achieved for example by different mirror types or by different materials. The advantage here is that by changing the reflection coefficient of the proportion of the generated light, which is reflected in the optical channel, is easily varied. Thus, signals are easily transmitted over the optical channel.

In one embodiment of the invention can be provided that the surface area is formed variable in shape. For example, the surface area may be reflective or mirrored. The advantage here is that by the change in shape, a reflection behavior of the surface area is easily changed. For example, it can be provided that the surface region is formed on a preferably elastically deformable sheet metal part. The advantage here is that the sheet metal part reflects a sufficient amount of incident radiation and that the course direction of the reflected portion is easily changed by the change in shape of the sheet metal part. Thus, it is controllable whether the reflected light directed into the optical channel or, for example, diffused, is directed adjacent to the optical channel. Another advantage is that an elastically deformable sheet metal part is particularly well actuated to achieve the change in shape of the surface area.

In one embodiment of the invention can be provided that the actuating element against a restoring force from one, for example, the already mentioned, first actuating position in, for example, the already mentioned, second actuating position can be transferred. The advantage here is that it can be achieved in a simple manner that the actuator automatically returns to the first setting position when the operation is completed. For example, the adjusting element can be designed so that it develops the mentioned restoring force itself. It is particularly favorable if the restoring force defines a non-linear spring core line. Under a spring core line here the dependence of a spring force is understood by a deflection. A nonlinear innerspring line offers the advantage that a switching point can be defined, which can be detected tactilely on actuation. Thus, a direct feedback to the user on reaching a sufficient travel to actuate the actuator can be generated. It is particularly favorable if the spring core line runs discontinuously. Thus, the spring core line has at least one jump, at the associated deflection, the spring force decreases suddenly. Such a decrease in the spring force is particularly easy to detect as feedback to the user. Such a spring core line results, for example, in a strip of feather beam, as used in a crackpot frog, or other elastically deformable preferably planar materials, which show a snap over when exceeding a switching point in the course of deformation.

In one embodiment of the invention can be provided that the adjusting element and the sensor element are arranged on opposite sides of a housing wall. The advantage here is that the control element is accessible from the outside, while the sensor element and in particular the entire sensor device is protected within an enclosed space enclosed by the housing wall can be arranged. Preferably, the entire sensor device is separated from the actuator by the housing wall.

It is particularly advantageous if the optical channel is at least partially formed in one, for example, the already mentioned, housing wall. For example, the optical channel may be formed as a light guide. The advantage here is that a robust signal transmission path is formed.

In one embodiment of the invention can be provided that the optical channel has at least one pinhole. The advantage here is that stray light in the optical channel can be faded out or reduced. This improves the detectability of different reflection behavior of the actuating element. It is particularly favorable if the perforated diaphragm is arranged on an end of the optical channel facing the actuating element. The advantage here is that an incidence of stray light on the reflective surface is reducible or even completely avoidable. This improves the detectability of different reflection coefficients on the actuator.

It can be provided that the pinhole is formed as part of, for example, the already mentioned, housing wall. Thus, a simple design of the pinhole is possible. It is particularly advantageous if a light guide, which forms the optical channel, forms a corresponding constriction at the location of the pinhole. The advantage here is that the light guide can be passed through the pinhole.

It is particularly advantageous in this case if the pinhole is arranged at one end of the optical channel, preferably at one end of the optical channel, which faces an outer area. This results in a particularly favorable geometry of the beam guidance in the optical channel.

In one embodiment of the invention it can be provided that between the optical channel and a, for example, the already mentioned, housing wall, a flameproof gap is formed. The advantage here is that an overpressure, which builds up within an enclosed space enclosed by the housing wall, is degradable over the flameproof gap. Thus, the mechanical attachment of the optical channel to the housing wall is relieved.

In one embodiment of the invention, it can be provided that the actuating element is covered on the outside with a protective layer connected to a housing wall, for example the housing wall already mentioned. The advantage here is that a seal to the outside is easily effected. This is advantageous advantage that only small adjustment paths must be traversed with the actuator for the transmission of the setting position. The protective layer is then only slightly mechanically stressed.

In one embodiment of the invention it can be provided that the adjusting element is optically transparent in the already mentioned or a second spectral range which is different from the abovementioned spectral range. The advantage here is that a display of parking positions on the actuator is possible.

In one embodiment of the invention can be provided that a feedback unit is formed, with which an optical signal can be output through the actuator. For example, this output can take place in the already mentioned spectral range or in a second spectral range that differs from the first spectral range. The advantage here is that a feedback can be output via an operation to the operator. The use of a second spectral range deviating from the first spectral range for the feedback has the advantage that the feedback can be decoupled from the detection of the actuating position. Thus, disturbances of the detection of the positioning position can be avoided.

In one embodiment of the invention can be provided that the adjusting element or a part of the actuating element about an axis is rotatable or pivotable. The advantage here is that different surface areas of the control element with different reflection coefficients and / or with different reflection behavior can be brought easily to the optical channel. Thus, the proportion of light reflected in the optical channel is easily controllable.

Alternatively or additionally, it may be provided that the actuating element or a part of the actuating element is arranged displaceably along an axis, for example the one mentioned. The advantage here is that a print operation is executable.

Preferably, at least that part of the actuating element is rotatable or pivotable and / or displaceable, which is connected or coupled to the reflective surface area.

It is particularly favorable when the adjusting element is arranged rotatable or pivotable about an axis and displaceable along the axis. The advantage here is that a combination of different types of actuation is available.

In an embodiment of the invention, it can be provided that the sensor device is set up to distinguish between more than two intensity levels of the reflected component. The advantage here is that a higher information density over the optical channel is transferable.

To achieve the above object and as a preferred application, the invention provides for an actuator of the type mentioned that the control signal transmission device according to the invention, for example, as before described and / or according to one of the directed to a control signal transmission device protection claims, is configured, wherein the sensor element is in control connection with the drive unit. The advantage here is that an operation of the actuator with the control signal transmission device according to the invention can be achieved. Thus, in an actuator robust signal transmission for transmitting the control position of the actuator can be set up.

In an advantageous embodiment it can be provided that at least one optically acting element, in particular at least one lens, is arranged at at least one end of the optical channel, with which a beam path is guided in the optical channel without reflection. The advantage here is that a signal loss and generation of scattered light by total reflection at an interface of the optical channel, for example, an optical channel providing optical fiber, is avoidable. It is favorable if the at least one optical element has at least one lens. The advantage here is that the radiation is easy to fix. In this case, it is particularly favorable if at least one optical element, for example in each case at least one lens, is arranged at both opposite ends of the optical channel in order to achieve an optimized beam path without reflections at lateral boundary surfaces.

In order to achieve the stated object, a method for transmitting an actuating signal according to the invention provides that a surface region on a control element is irradiated with light in a spectral range and a portion reflected by the surface region is detected by a sensor element that actuates an actuating element for transmitting the actuating signal in that the reflective surface area is changed by the actuation, that the change is detected by a sensor element and that the transmitted actuating signal is derived from an output signal of the sensor element. The advantage here is that a signal transmission method is provided which requires comparatively small travel paths on the control element for transmitting a clear information about the current or current control position. Thus, an apparatus implementation of this method is robust against harsh environmental conditions formable.

In this case, it is particularly favorable if in the method according to the invention a control signal transmission device according to the invention, in particular as described above or according to one of the protection claims directed to a control signal transmission device, is used. Alternatively or additionally, it may be provided that in the method according to the invention an actuator according to the invention, for example as described above and / or according to one of the claims directed to an actuator protection claims, is used.

The invention will now be described in more detail with reference to embodiments, but is not limited to these embodiments. Further exemplary embodiments result from the combination of the features of individual or several protection claims with one another and / or with one or more features of the exemplary embodiment.

It shows

1 a schematic diagram of a signal transmission via an optical channel without an actuating element according to the invention,

2 1 is a schematic diagram of a control signal transmission device according to the invention for explaining a method according to the invention for transmitting an actuating signal,

3 a further control signal transmission device according to the invention with optical elements for steel guidance,

4 a further control signal transmission device according to the invention with an actuating element, which is arranged rotatably about an axis,

5 reflective surface areas on an actuating element of a control signal transmission device according to the invention,

6 a reflective surface area on another control signal transmission device,

7 an actuating element, which is designed to be rotatable about an axis and deformable along the axis,

8th an actuating signal transmission device according to the invention with an actuating element which can be rotated at least in part about an axis and which can be displaced along the axis,

9 the change of the reflection behavior when approaching a finger to an open end of a clean-surface optical channel in a control signal transmission apparatus according to 1 .

10 the change of the reflection behavior when approaching a gloved finger to an open end with clean surface of an optical channel in a control signal transmitting device according to 1 .

11 the change of the reflection behavior when approaching a gloved finger to an open end with dirty surface of an optical channel in a control signal transmission device according to 1 .

12 the change of the reflection behavior upon actuation of an actuating element according to the invention and

13 a further control signal transmission device according to the invention with a feedback unit with a separate light source.

1 shows one as a whole 1 designated actuating signal transmitting device according to the prior art.

The known actuating signal transmission device has a sensor device 3 and a signal transmission path 4 , here as an optical channel 5 educated.

The optical channel 5 runs between the first page 14 , a housing wall 15 and a second page 16 the housing wall 15 ,

The housing wall 15 thus separates an interior area 20 from an outdoor area 21 ,

The sensor device 3 has a light source 7 , with the light 8th in an end 11 of the optical channel 5 is einstrahlbar.

The sensor device 3 also has a sensor element 12 , with which escaping light 13 from the end 11 is detectable.

Goes to the opposite, open end 10 of the optical channel 5 a finger 6 the share changes 13 of the end 11 Exiting light, because now light on the finger 6 is reflected.

9 shows the change of the leaving stake 13 when placing a finger. Shown is the respectively recorded intensity as a function of time.

In a first section 23 there is no finger 6 on, and the end 11 is open. It therefore only a small proportion 13 emerge as reflected light.

At a first time 24 becomes a finger 6 to the open end 10 introduced.

In a second section 25 Therefore, the reflected proportion increases 13 , which with the sensor element 12 is detectable.

At a second time 26 is the process of laying on the finger 6 completed. Thereupon arises in a third section 28 an approximately constant high level of the reflected portion 13 on the sensor element 12 one.

10 shows the same process when instead of an uncovered finger 6 a finger is used, which is covered with a glove.

It can be seen that the difference between low levels of identity in the section 24 and the high intensity level in the section 24 significantly lower. In addition, the transitions are at the times 24 and 26 less spicy. This makes it difficult to detect if one with the gloved finger 6 took place.

11 shows the operation of the operation with a finger 6 if a surface 29 at the end 10 of the optical channel 5 is dirty.

Again, after a first section 23 in which the finger 6 is removed when approaching the finger 6 at a time 24 and in a section 25 an increase in the intensity of the reflected portion 13 one.

At a time 24 touches the finger 6 the pollution, for example, a dirt film on the surface 29 , and destroy or eliminate them.

This leads to a sudden decrease in the intensity of the reflected portion 13 because the pollution itself had contributed to the reflection.

In the case of pollution, it may therefore occur that the unbounded intensity level in section 23 is higher than the intensity level in a period of time 28 in which the finger 6 on the surface 29 rests.

Therefore, it is very difficult to surely distinguish the actuated state from the unactuated state when the actuation signal transmission device 1 is used in or in harsh environmental conditions.

2 shows in a very simplified schematic representation of a control signal transmission device according to the invention 1 ,

The actuating signal transmission device 1 has an actuator 2 and a sensor device 3 ,

Between the actuator 2 and the sensor device 3 is a signal transmission path 4 as optical channel 5 educated.

The actuator 2 is from the outside, for example with a finger 6 actuated.

2 shows the one-piece actuator 2 in the starting position and - as a dashed line - in a second setting position after exposure to the finger 6 ,

A light source 7 the sensor device 3 is for generating and irradiating light 8th formed and set up in a spectral range. This may be a visible spectral range, an infrared spectral range and / or an ultraviolet spectral range.

On the actuator 2 is a reflective surface area 9 educated, the one end 10 of the optical channel 5 is facing.

The surface area 9 is in the spectral range of the light source 7 reflective trained. At the opposite, second end 11 of the optical channel 10 is the already mentioned light source 7 arranged to irradiate the light in the optical channel.

This light is at least partially through the optical channel 5 to the actuator 2 directed where it is at the surface area 9 is reflected. The reflected light is at least partially from the optical channel 5 captured and to the second end 11 returned.

The sensor device 3 has a sensor element 12 with which this of the surface area 9 over the optical channel 5 reflected proportion 13 of the sensor device 3 generated light 8th is detected.

To the share 13 of the reflected light is the sensor element 12 for detecting the intensity or one of the intensity of the reflected portion 13 dependent measured variable.

1 shows - as already mentioned - the actuator 2 in a first parking position (solid line) and a second parking position (dashed line).

The surface area forms in the first setting position 9 a concave mirror, which from the optical channel 5 incident rays are focused and reflected.

In this position, the surface area indicates 9 Thus, a first reflection behavior, which corresponds to the reflection behavior of a concave mirror.

In the second setting position is the surface area 9 deformed and forms a Zerr- or vault mirror. Thus the surface area works 9 for incident light from the optical channel 5 strahlaufweitend. The surface area 9 reflects defuse and therefore has a second reflection behavior that deviates from the first reflection behavior.

This changes the integrity of the share 13 at the second end 11 of the optical channel 5 ,

By switching between the first control position and the second control position is thus between a first reflection coefficient and a second reflection coefficient at the first end 10 of the optical channel 5 switchable.

In the embodiment according to 2 is the surface area 9 on a sheet metal part 27 educated. This allows the surface area 9 is variable in shape to the respective setting position, depending on the pressure from the outside with a finger 6 take.

The sheet metal part 27 forms in the first setting position (solid line) a section of a spherical surface. When pressure from the outside on the actuator develops the sheet metal part 27 a restoring force due to its inherent elasticity.

The restoring force increases with increasing deformation.

From a certain intermediate position passes through the sheet metal part 27 with sustained application a quick, on the finger 6 noticeable change in shape. During this rapid change in shape, the developed restoring force decreases abruptly. This manifests itself in a discontinuous or otherwise nonlinear spring characteristic, which characterizes the restoring force as a function of the deformation. There is thus a snap at a switching point, which is clearly noticeable.

The first end 10 of the optical channel 5 is on a first page 14 a housing wall 15 educated.

The second end 11 of the optical channel 5 is on a second page 16 that's the first page 14 opposite, trained. The optical channel 5 thus connects the two opposite sides 14 . 16 the housing wall 15 ,

At the first page 14 is the control element 2 arranged while the sensor device 3 with the sensor element 12 on the second page 16 is arranged.

The optical channel 5 is thus in the housing wall 15 educated. In the embodiment, the optical channel 5 at least in sections as a light guide 17 educated.

In the optical channel 5 is a pinhole 18 arranged.

This pinhole 18 is at the end 10 , which is the actuator 2 facing, arranged and reduces stray light, which reflects the reflection behavior of the surface area 9 would falsely unfavorable especially in the diffuse reflective position.

The pinhole 18 is as part of the housing wall 15 educated. The light guide 17 forms at the place of the pinhole 18 a corresponding narrowing 49 , Thus, the light guide 17 through the pinhole 18 passed through.

Between the light guide 17 of the optical channel 5 and the housing wall 15 is a flameproof gap 19 educated. This flameproof gap 19 causes in a conventional manner a pressure equalization between one of the housing wall 15 enclosed interior 20 and an outdoor area 21 the housing wall 15 ,

The actuator 2 is outside with a protective layer 22 covered, which is on the housing wall 15 continues to achieve a seamless seal.

12 shows the time course of the with the sensor element 12 recorded share 13 of the reflected light. in a first section 23 is the control element 2 unencumbered from the outside.

At a time 24 the actuation of the control element begins 2 with a finger 6 ,

In a second section 25 the deformation of the surface area takes place 9 almost uniform and the proportion 13 of the reflected light decreases.

At a second time 26 a snapping of the sheet metal part occurs 27 ,

It thus comes to a sudden decrease in the reflected portion 13 , which is clearly detectable in an evaluation.

At the same time, this click gives a tactile feedback to the finger 6 in that the second setting position is reached. In a third section 28 detects the sensor element 12 the lower reflection level, which belongs to the second control position.

In the 2 apparent housing wall 15 belongs to a not shown, known per se actuator, wherein the sensor device 3 is connected to a likewise not shown drive unit of the actuator. This results in a control connection between the sensor element 12 and the drive unit to the actuator by actuating the actuator 2 from the outside area 21 head for.

The actuating signal transmission device 1 thus enables the realization of a method for transmitting an actuating signal, wherein the surface area 9 on the actuator 2 with light 8th is irradiated in a visible or invisible, for example, infrared or ultraviolet, spectral region, and one of the surface region 9 reflected proportion 13 with the sensor element 12 is detected.

To transmit the actuating signal, the actuator 2 be actuated, reducing the reflective surface area 9 is changed.

This change is made with the sensor element 12 detected. From an output signal of the sensor element 12 the transmitted control signal is derived. This control signal can be used to control, for example, an actuator.

The actuator 2 , in particular the sheet metal part 27 , At least partially optically transparent to be able to output a feedback optically. The light source 7 is thus as a feedback unit 46 usable, for example, by a color change of the generated light 8th , It is also a separate light source 47 (see. 13 ) usable for this.

3 shows in a likewise highly simplified representation another control signal transmission device according to the invention 1 , Constructive and / or functional to the embodiment according to 2 identical or identical components and functional units are denoted by the same reference numerals and not described separately again. The remarks to 2 therefore apply to 3 corresponding.

The embodiment according to 3 differs from the embodiment according to 2 in that at the ends 10 . 11 of the optical channel in each case an optically active element 30 . 31 - here as one in the light guide 17 ground lens - is formed.

Through these optical elements 30 . 31 becomes a bundling of the beam path in the optical channel 5 achieved, which is a reflection of light passing through the end 10 respectively. 11 enters and through the other end 11 respectively. 10 exit, on a lateral surface 32 or lateral boundary of the optical channel 5 largely avoids.

As a result, the proportion of uncontrollable scattered light is reduced.

A pinhole 18 as in the embodiment gem. 2 therefore dispensable in this case, but may be additionally provided to improve the switching behavior.

The 4 to 6 show a further embodiment of the invention in highly simplified schematic representations. Functional and / or constructive to the embodiments according to 2 and 3 identical or similar components and functional units are denoted by the same reference numerals and not described separately again. The remarks to the 2 and 3 therefore apply to 4 to 6 corresponding.

The embodiment according to the 4 to 6 differs from the preceding embodiments in that the actuating element 2 not deformable, but rigid.

The actuator 2 is as a control knob 33 formed in a recess 34 the housing wall 15 can be used. In further embodiments, the control knob 33 directly on the outside of the housing wall 15 Formation of a recess 34 placed.

In the embodiment according to 4 to 6 is on one of the housing wall 15 facing bottom 35 on the control knob 33 the reflective surface area 9 with a first reflection coefficient and the complementary surface area 36 formed with a second, different from the first reflection coefficient reflection coefficient.

The actuator 2 as a whole is about an axis 37 rotatable or pivotable on the housing wall 15 arranged.

Depending on the positioning position of the control element 2 is a different proportion of the reflective surface area 9 before the end 10 of the optical channel 5 arranged. Here, the reflective area 9 - as in 5 apparent - consist of several disjointed individual areas, or the surface area 9 can be coherent, like this 6 shows.

Depending on the positioning position of the actuator 2 is therefore at the end 10 of the optical channel 5 a respective individual relationship between the surface of the reflective surface area 9 and the surface area of the complementary surface area 36 in the field of view of the optical channel 5 set.

Thus, by rotation or pivoting of the actuating element 2 a different reflection behavior at the optical end 10 adjustable, which as a respective intensity of the proportion 13 of the reflected light on the sensor element 12 is detectable.

In 4 is still apparent that the recess 34 , in which the control knob 33 is arranged, through a shaft seal 38 is sealed to the outside.

By a known per se of rotary switches locking mechanism on the actuator 2 It is achieved that the setting of a defined setting position can be reached and felt by a snap.

7 shows a further embodiment of a control signal transmission device according to the invention 1 , Functionally and / or constructively to the preceding embodiments, identical or identical components and functional units are denoted by the same reference numerals and not described separately again. The remarks to the 2 to 6 therefore apply to 7 corresponding.

The embodiment according to 7 differs from the preceding embodiments in that the embodiments according to 2 and 4 to 6 combined with each other. The actuator 2 is thus multi-part with a sheet metal part 27 and a control knob 33 educated.

In the too 2 described manner is with the sensor element 12 the sensor device 3 an actuation of the sheet 27 on the actuator 2 detectable.

In addition, the actuator has 2 one too 4 to 6 detailed control knob 33 on, whose parking positions in the manner already described with a further sensor device 39 are detectable. Here is the sensor device 39 according to the sensor device 3 out 4 built and works according to the principles described there: the light source 40 in 7 corresponds to the light source 7 in 4 while that sensor element 41 in 7 in function, structure and application of the sensor element 12 in 4 equivalent.

8th shows a further control signal transmission device according to the invention 1 , Functionally and / or constructively to the preceding embodiments, identical or identical components and functional units are denoted by the same reference numerals and not described separately again. The remarks on the preceding embodiments therefore apply to 8th corresponding.

The embodiment according to 8th differs from the preceding embodiments in the configuration of the actuating element 2 ,

The actuator 2 has a control knob 33 on which - how to the 4 to 7 already described in detail - in a recess 34 a housing wall 15 can be arranged. The actuator 2 can in further embodiments without recess 34 on a housing wall 15 be arranged.

The actuator 2 is analogous to 4 to 7 around the axis 37 rotatably mounted.

The control knob 33 differs from the embodiments according to 4 to 7 in that at the bottom 35 that the housing wall 15 facing, several pinhole 18 . 42 are formed with different opening diameters. Behind the individual pinholes 18 . 42 is each a sheet metal part 27 . 43 arranged in each case forms a concave mirror in the respective rest position. Inside is on the sheet metal parts 27 . 43 each a reflective surface area 9 respectively. 44 educated.

These reflective surface areas 9 . 44 are thus behind the respective assigned pinhole 18 . 42 arranged so that in a top view on the bottom 35 the view according to 5 results.

Inside the control element 2 is a stamp 45 arranged, which is acted upon from the outside and which along the axis 37 slidably arranged. The multipart control element 2 is so far in parts along the axis 37 slidably arranged.

By moving this can each before the optical channel 5 at the end 10 located sheet metal 27 . 43 be deformed as already 2 has been described.

As a result, a reflection behavior and thus an effective reflection coefficient at the end 10 of the optical channel 5 be changed in the manner described. This in turn is with the sensor element 12 detectable.

By turning or swiveling the control knob 33 around the axis 37 can the different apertures 18 . 42 with the respectively arranged behind the reflective surface areas 9 . 44 before the end 10 of the optical channel 5 to be brought. Because the pinhole 18 . 42 each having an individual opening diameter, the reflection behavior is already in the initial setting position without actuation of the punch 45 differently.

Thus, not just a change between the in 8th shown positioning position of the sheet metal parts 27 . 43 in a deformed parking position (cf. 2 , dashed line) with the sensor element 12 detectable, but it is also detectable in which position the control knob 33 is.

13 shows a schematic representation of another control signal transmission device according to the invention 1 , Functionally or constructively to the embodiments according to the preceding figures, identical or identical components and functional units are in this case designated by the same reference numerals and not described again separately. The remarks to the 1 to 12 Therefore, apply to the embodiment according to 13 corresponding.

The embodiment according to 13 differs from the preceding embodiments in particular in that the feedback unit 46 a separate light source 47 having.

With the separate light source 47 is thus an optical signal can be generated, which gives a feedback to an operating step.

The feedback unit 46 has an optically transmissive area 48 in the actuator 2 is introduced. In this way, the feedback in the form of the mentioned optical signal from the separate light source 47 in the optical channel 5 coupled and from this through the optically transparent area 48 For example, an open area, a transparent or a translucent area, in the outdoor area 21 be guided. In further embodiments, this optical signal is from the separate light source 47 or the light source 7 outside the optical channel 5 led to the outside.

Overall, according to the embodiment in this way 13 achievable that the optical signal as feedback by the actuator 2 can be dispensed through.

In the control signal transmission device 1 with a sensor device 3 that at one end 11 one as a signal transmission path 4 trained optical channel 5 is arranged, wherein the sensor device 3 a light source 7 and a sensor element 12 for the detection of one share 13 from in the optical channel 5 reflected light 8th has, is suggested, at an opposite end 10 of the optical channel 5 an actuator 2 with an optical channel 5 facing reflective surface area 9 adjustable, in particular deformable, to be arranged between a first setting position and a second setting position, wherein the surface area 9 in the first setting position, a first reflection behavior and in the second setting position, a second reflection behavior, which is different from the first reflection behavior realized.

Claims (14)

Actuating signal transmission device ( 1 ) with an actuating element ( 2 ) and a sensor device ( 3 ), between the actuator ( 2 ) and the sensor device ( 3 ) a signal transmission path ( 4 ) and wherein the sensor device ( 3 ) for detecting at least one actuating position of the actuating element ( 2 ), characterized in that the signal transmission path ( 4 ) as an optical channel ( 5 ) is designed such that a light source ( 7 ) for generating light ( 8th ) is arranged in a spectral range that at the actuator ( 2 ) a surface region reflecting in the spectral region ( 9 . 44 ) is formed and that the sensor device ( 3 ) a sensor element ( 12 ) for detecting one of the surface area ( 9 . 44 ) over the optical channel ( 5 ) reflected portion of the sensor device ( 3 ) generated light ( 8th ) is set up. Actuating signal transmission device ( 1 ) according to claim 1, characterized in that the sensor device ( 3 ) for irradiating the generated light ( 8th ) in the optical channel ( 5 ) is formed and / or that the sensor element ( 12 ) for detecting one of the intensity of the reflected portion ( 13 ) dependent measure is set up. Actuating signal transmission device ( 1 ) according to claim 1 or 2, characterized in that the surface area ( 9 . 44 ) has a first reflection behavior in a first adjustment position and a second reflection behavior in a second adjustment position, the second reflection behavior being different from the first reflection behavior. Actuating signal transmission device ( 1 ) according to one of claims 1 to 3, characterized in that the surface area ( 9 . 44 ) in the or a first setting position, a beam-collimating and / or directionally reflecting element, in particular a concave mirror, and / or in the or a second setting position, a beam-expanding and / or diffusely reflecting element, in particular a Zerr- or camber mirror forms, and / or the control element ( 2 ) in the or a first setting position with a first reflection coefficient and / or in the or a second setting position with a second reflection coefficient in the optical channel ( 5 ) reflected. Actuating signal transmission device ( 1 ) according to one of claims 1 to 4, characterized in that the surface area ( 9 . 44 ) variable in shape, in particular on a sheet metal part ( 27 ), and / or that the actuating element ( 2 ) against a preferably non-linear and / or discontinuous spring characteristic defining restoring force from the or a first actuating position in the or a second actuating position can be transferred. Actuating signal transmission device ( 1 ) according to one of claims 1 to 5, characterized in that the actuating element ( 2 ) and the sensor element ( 12 ), in particular the sensor device ( 3 ), on opposite sides ( 14 . 16 ) a housing wall ( 15 ) are arranged and / or that the optical channel ( 5 ) at least in sections in the or a housing wall ( 15 ), in particular as a light guide ( 17 ). Actuating signal transmission device ( 1 ) according to one of claims 1 to 6, characterized in that the optical channel ( 5 ) at least one pinhole ( 18 . 42 ), in particular on an actuating element ( 2 ) facing end ( 10 ) and / or as part of or a housing wall ( 15 ). Actuating signal transmission device ( 1 ) according to one of claims 1 to 7, characterized in that between the optical channel ( 5 ) and the or a housing wall ( 15 ) a flameproof gap ( 19 ) is formed and / or that the actuating element ( 2 ) on the outside with one or a housing wall ( 15 ) associated protective layer ( 22 ) is covered. Actuating signal transmission device ( 1 ) according to one of claims 1 to 8, characterized in that the actuating element ( 2 ) is optically transparent in the or a second spectral range and / or that a feedback unit is formed, with which an optical signal, in particular in the or a second spectral range, can be output through the actuator. Actuating signal transmission device ( 1 ) according to one of claims 1 to 9, characterized in that the actuating element ( 2 ) or a part of the actuating element about an axis ( 37 ) is rotatable or pivotable and / or slidably disposed along an axis and / or that the sensor device ( 3 ) for distinguishing more than two intensity levels of the reflected portion ( 13 ) is set up. Actuating signal transmission device ( 1 ) according to one of claims 1 to 10, characterized in that at least one end of the optical channel ( 5 ) is arranged at least one optically acting element, in particular at least one lens, with which a beam path reflection-free in the optical channel ( 5 ) is guided. Actuator with a control unit and control signal transmission device ( 1 ) according to one of the preceding claims, wherein the sensor element ( 2 ) is in control connection with the drive unit. Method for transmitting an actuating signal, characterized in that a surface area ( 9 . 44 ) on an actuator ( 2 ) with light ( 8th ) in a spectral region and one of the surface region ( 9 . 44 ) reflected proportion ( 13 ) with a sensor element ( 12 ) is detected, that an actuating element ( 2 ) is actuated to transmit the actuating signal that the reflective surface area ( 9 . 44 ) is changed by the operation that the change with a sensor element ( 12 ) is detected and that the transmitted control signal from an output signal of the sensor element ( 12 ) is derived. Method according to claim 13, characterized in that a control signal transmission device ( 1 ) according to one of claims 1 to 11 and / or an actuator according to claim 12 is used / be.

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