EP2463835B1 - Infrared motion sensor - Google Patents

Description

The present invention relates to an infrared motion sensor according to the preamble of the main claim. Such a device is well known in the art and is used, for example, to control outdoor lights or the like. Lighting systems typically attached to house walls, ceilings, the roof area or door frame such that occurring in the detection range of the motion sensor movements of people can trigger a light activation.

With regard to an optimal adaptation of such a device, in particular the setting up of the detection range relative to the spatial conditions of the mounting locations and the avoidance of false activations due to undesirably large detection ranges, generically known devices have setting means for the detection range.

Numerous variants are known here: on the one hand, it is known to design a sensor housing such that it can be rotated or swiveled, so that the lens unit can be suitably directed to the desired target area; a maximum detection range can thus be determined and limited by tilting down the sensor housing. However, such storage is usually limited in its effective adjustment range; In addition, such a realization is structurally and mechanically complex.

Additionally or alternatively, movement sensors known generically have shading elements (diaphragms) in the form of detachable attachable (and for infrared radiation impermeable) plastic platelets with which the lens surface and consequently an effective detection range of the sensor unit can be limited. It is also known to arrange such panels pivotally outside of a housing. However, such an approach is cumbersome and less practical to handle, especially for technically unexperienced users.

A further variant for setting an effective detection range is the electronic adjustment, based on the sensitivity or signal strength of the signal output by the sensor unit. However, in conventional sensor arrangements, these signals are constant over a larger distance range, so that a simple producible electronic adjustment is difficult; Added to this is the fact that, depending on the object size and speed of a detection object, the generated electrical signals differ significantly; a large body produces a signal as strong as a small body at a short distance at a great distance.

The DE 198 48 272 A1 shows a motion sensor with an adjustable mirror and sensor unit.

The EP 1 847 972 B1 shows an infrared motion sensor, wherein the sensor unit by means of an adjusting element in the sensor housing relative to the sensor housing and to the sensor housing sitting lens unit along a predetermined arcuate adjustment path is possible.

From the US 6,323,488 B1 a luminaire with an infrared motion sensor is known, wherein a Fresnel lens via a screw mechanism is adjustable relative to a single infrared sensor. The known device is not suitable for covering a large detection area, in particular no 360 ° extending detection area. In addition, the complex structure of disadvantage and the need for the Fresnel lens is movable, ie adjustable to arrange.

In the CH 689 926 A a motion sensor is described, which responds to infrared radiation. The adjustment of the detection range is done via an adjustment of a single sensor relative to a fixed aperture and a fixed lens. A disadvantage is the low detection range and the fact that must be adjusted to adjust the detection range of the sensor with the entire electrical connection mimic.

In the DE 87 05 013 An infrared motion detector is described which comprises a single infrared sensor and thus has a limited detection range. The shutter is slidably disposed relative to the single sensor, with the corresponding slide mechanism to be operated directly by hand. The disadvantage here is that a fine adjustment of the detection area is virtually impossible.

In the DE 31 09 790 A1 is a photoelectric switching device, comprising a light source for illuminating an object known. The light of an incandescent lamp passes through a lens, a half mirror and a lens and is focused on an object to be detected. The reflected light on the object passes through the lens, is reflected at the half mirror and passes through another lens from where it reaches a single, arranged on a circuit board photoelectric sensor. The reference light quantity can be adjusted by turning a knob. The known device has nothing in common with an infrared motion sensor and is located in a completely different technical field.

In some of the aforementioned infrared motion sensors, a complex, only cost-intensive realizable construction is needed. In other known infrared sensors, as in the variant with attachable panels, the handling is in need of improvement, especially with regard to ensuring an exact or small-scale adjustment.

Based on the aforementioned prior art, the present invention seeks to improve a generic infrared motion detector with respect to a simple, accurate, reproducible and easy to handle range setting.

This object is achieved by the infrared motion sensor having the features of the main claim; advantageous developments of the invention are specified in the subclaims. All fall within the scope of the invention Combinations of at least two features specified in the description, claims and / or figures.

The invention is based on the idea of designing the adjusting device for changing and / or adjusting the detection range of the sensor units in such a way that the diaphragm (shading element), which is preferably impermeable to infrared radiation and more preferably made of plastic, can be adjusted on a linear trajectory. in order to be able to limit the effective detection range of the sensor unit in this way. It is essential that the linear adjustment movement of the diaphragm from a rotational movement of a manually adjustable threaded element, preferably a spindle, alternatively results in a spindle nut. In other words, the aperture for adjusting and / or changing the detection range of the sensor units is operatively connected to a manually operable spindle or a manually operable spindle nut, that from the manual, exactly metered rotational movement of the spindle or the spindle nut a linear change in position of the diaphragm relative to the Sensor unit and preferably also relative to a, preferably spaced from the sensor units lens unit results. An infrared motion sensor designed according to the concept of the invention realizes an intuitive and with good accuracy in a departure from the electronic, sensitivity-based distance setting and the known pivoting of the entire sensor housing and the adjustment of the sensor units relative to the housing in a surprisingly simple manner realizable range setting by providing a, for example by means of a screwdriver operable spindle drive, which allows the user-side, rotating adjustment movement in a linear movement of the diaphragm relative to the, preferably fixed and thus robust and cost-effective, sensor unit. The measure according to the invention makes it possible to expand or limit the detection range surprisingly simply and effectively without the need for dazzling elements which are difficult to assemble, and without an ultimately unreliable electronic sensor signal having to be evaluated for range setting or limitation, and without the entire sensor units having to be evaluated and / or the lens unit must be mounted adjustable. In addition, the adjusting device - possibly up to a range accessible for Verstellzwecken - completely within the sensor housing and thus protected against environmental influences are arranged. If necessary, the adjustment can also be arranged completely within the housing, so that the housing first opened, preferably removed from a mounting support member of the housing, must be able to operate the actuator manually. Another significant advantage of Verstellmöglichkeit invention is also to be seen in the fact that the transmission ratio between the manually set rotational angle of the threaded element and the resulting Axialhub the shutter is selectable or tuned, preferably such that a rotational movement over a large angle of rotation only a small linear Adjusting movement of the diaphragm has the consequence to adjust the glare position and thus the range or the reception area exactly.

The infrared motion sensor according to the invention can be formed with a single sensor unit or a plurality of sensor units arranged next to one another in a plane. According to the invention, the linearly adjustable diaphragm is designed as a kind of telescopic diaphragm, i. telescopically extendable trained. For this purpose, the diaphragm according to the invention comprises a plurality of nested or interlocking, in particular circumferentially closed, for example rectangular contoured frame, of which at least one, preferably an upper frame with the threaded element, for example via an engagement member or integrally formed with the diaphragm or the upper frame Engagement portion is operatively connected, such that the adjusting movement or rotational movement of the threaded element is converted into the required axial or linear adjustment movement of the diaphragm.

While, on the one hand, it is particularly preferred and advantageous to carry out the change of location according to the invention continuously and steplessly, it is alternatively possible and encompassed by the invention to include a suitably predetermined graduation, rastering or the like. Segmentation of the displacement along the linear Adjusting the aperture to make. Preferably, the adjusting drive is designed such that the detection range decreases with increasing extension height of the diaphragm, measured from a rear side of the sensor housing.

With regard to the specific design of the lens unit, there are different possibilities. In the case of providing a plurality of sensor units, it is preferable to provide a common lens unit, it also being possible for groups of sensor units or all sensor units to be assigned in each case one (separate) lens unit. The diaphragm is preferably arranged in a region between the sensor unit (s) and the lens unit (s). Preferably, the at least one, preferably only one lens unit, comprises a plurality of lens elements or lens sections, wherein alternatively, for example, a Fresnel lens can also be used.

It is particularly preferred if the panel engages either via a operatively connected to the panel, in particular fixed to this engagement part, or alternatively, which is preferred, with an integrally formed with the panel engaging portion in the thread of the threaded element. In the case of forming the threaded element as a spindle with an external thread, the engagement part is preferably an internal thread part or the engagement section is an Inngewindeabschnitt, whereas it is in the case of the formation of the threaded element as an internal thread member (spindle nut) preferably an external thread part, in particular a Spindle part or an external thread section or spindle section is. Especially the one-piece design of aperture and engagement portion is particularly preferred, since in this case the component can be realized as a common injection molded part.

It is particularly expedient if the engagement part or the engagement portion is arranged rotationally fixed in order to avoid co-rotation in a manual operation of the threaded element. Preferably, the non-rotatable assembly is achieved by the provision of a linear guide for the engagement member or the engagement portion, which ensures that the engagement member or the engagement portion in a rotational movement of the threaded member parallel to this is adjusted. It is particularly preferred if it is a slot-like guide, which in the case of the formation of the threaded element as a (threaded) spindle can be arranged radially outside the spindle, whereas it is preferred in the formation of the threaded element as a threaded spindle when the linear guide is arranged centrally within the spindle nut or above this. In the case of providing an anti-rotation device for the panel can, if desired, be dispensed with a separate rotation for the engaging member or the engaging portion.

It is particularly preferred if the linear movement path, along which the diaphragm is adjustable, is not aligned with the threaded element longitudinal center axis in the axial direction, but if the adjustment axis or movement path of the diaphragm runs in a plane parallel to the longitudinal central axis of the threaded element, spaced therefrom. Preferably, the linear trajectory, at least in sections parallel and arranged adjacent to the threaded member to minimize the height of the infrared motion sensor.

In order to prevent an automatic adjustment of the detection range, for example by vibrations, it is preferred if the spindle drive is designed to be self-locking. This can be realized, for example, by the choice of a suitable thread pitch and / or a suitable static coefficient of friction of the surface of the threaded element and / or of the engagement part or engagement section.

To facilitate manual adjustment of the threaded element, it is preferred if this particular on an accessible from outside the sensor housing end face a standard drive, such as a slot drive or the like. for cooperation with a turning tool, in particular a screwdriver.

In order to further simplify manufacturability with minimized costs, it is preferred for the panel and / or the threaded element and / or the housing to be designed as a plastic part, particularly preferably as a plastic injection-molded part is / are. Preferably, at least two functional parts, in particular the diaphragm and an engagement portion are made in one piece. The diaphragm is preferably also a single component having a plurality of diaphragm sections, it also being possible to implement an embodiment with a diaphragm which can be assembled from individual parts.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

Fig. 1:

eine Perspektivansicht eines nicht erfindungsgemäßen Infrarot-Bewegungssensors von schräg vorne bei abgenommenem (nicht dargestellten) Linsendeckel zum besseren Verständnis der Erfindung,

Fig. 2:

eine vergrößerte Darstellung eines Details aus Fig. 1, welches eine Anordnung mehrerer Sensorelemente mit zugehöriger, linear verstellbarer Blende und Stellantrieb zum Verstellen der Blende zeigt, wobei die Blende in der maximal eingefahrenen Position gezeigt ist, in der der Bewegungssensor den größten Erfassungsbereich hat,

Fig. 3:

das Detail aus Fig. 2 mit maximal ausgefahrener Blende,

Fig. 4:

eine perspektivische Ansicht von schräg vorne eines erfindungsgemäßen Ausführungsbeispiels eines Infrarot-Sensors mit abgenommenem Linsendeckel,

Fig. 5:

ein teilweise geschnittenes Detail aus Fig. 4, welches eine Sensoreinheit mit zugehöriger, teleskopartiger Blende und Stelleinrichtung zum linearen Verstellen der Blende zeigt, wobei die Blende sich in einer Zwischenposition befindet,

Fig. 6:

das Detail aus Fig. 5 mit maximal nach oben ausgefahrener Blende, wobei der Erfassungsbereich der Sensoreinheit hierdurch maximal eingegrenzt,

Fig. 7:

einen aufklipsbaren Gehäusedeckel, der grundsätzlich, ggf. nach geometrischen Anpassungen, alternativ mit der ersten (Fig. 1 bis 3) oder der erfindungsgemäßen Ausführungsvariante verwendbar ist und

Fig. 8:

eine perspektivische Rückansicht der ersten und erfindungsgemäßen Ausführungsvariante.

These show in:

Fig. 1:

a perspective view of a non-inventive infrared motion sensor obliquely from the front with removed (not shown) lens cap for a better understanding of the invention,

Fig. 2:

an enlarged view of a detail Fig. 1 showing an arrangement of a plurality of sensor elements with associated, linearly adjustable diaphragm and actuator for adjusting the diaphragm, wherein the diaphragm is shown in the maximum retracted position, in which the motion sensor has the largest detection range,

3:

the detail Fig. 2 with maximum extended aperture,

4:

a perspective view obliquely from the front of an inventive embodiment of an infrared sensor with removed lens cap,

Fig. 5:

a partially cut detail Fig. 4 which shows a sensor unit with associated telescopic diaphragm and adjusting device for linear adjustment of the diaphragm, wherein the diaphragm is in an intermediate position,

Fig. 6:

the detail Fig. 5 with maximally upwardly extended diaphragm, wherein the detection range of the sensor unit is thereby limited to a maximum,

Fig. 7:

a clip-on housing cover, which in principle, if necessary after geometric adjustments, alternatively with the first ( Fig. 1 to 3 ) or the embodiment variant according to the invention is usable and

Fig. 8:

a rear perspective view of the first and inventive embodiment.

In the figures, like elements and elements having the same function are denoted by the same reference numerals.

In Fig. 1 is an illustrative embodiment of an infrared motion sensor 1 (hereinafter motion sensor 1) with removed, in Fig. 7 shown housing cover 2 shown. The housing cover 2 can be placed on the in Fig. 1 shown housing lower part 3 of the sensor housing 4 clipped, ie set by locking.

In the interior of the sensor housing 4 is a preferably designed as a printed circuit board base plate 5, on which a carrier body 6 is arranged for in the embodiment shown a total of four sensor units 7. The sensor units 7 are aligned at an angle to the base plate 5, which run parallel to a rear mounting plane of the sensor housing. The sensor surfaces 8 of the sensor units 7 point inwardly to an axis, not shown, perpendicular to the base plate 5 axis. The sensor units 7 are distributed uniformly in the circumferential direction, in such a way that a total detection range of 360 ° results, based on the parallel to the base plate 5 extending mounting plane.

The held in the support body 6 sensor units 7 is associated with a cross-shaped in plan view aperture 9, along a linear, perpendicular to the base plate extension 5 extending path of movement linearly adjustable, i. is mobile. For this purpose, the diaphragm 9 is associated with a spindle drive 10 as an actuating device 11, wherein the spindle drive 10 comprises a threaded element 12 formed as a spindle in the embodiment shown, which is mounted rotatably and otherwise stationary. The threaded element 12 is manually operable from the rear side of the housing. In addition, the housing base must be removed from a wall or ceiling or, if provided, by a mounted on the wall or ceiling mounting bracket.

With the here formed as an external thread thread 13 of the threaded element designed as an internal threaded portion engaging portion 14 is engaged, which is formed integrally with the aperture 9. The engagement portion 14, with a total of four radial extensions 15, one of which is connected to the actual panel 9, guided in radial slots guides 16, here linear guides, out, in addition to the linear guide function have the function of holding the engagement portion 14 rotationally fixed. The trained as a radial slots guides 16 are frontally provided in a sleeve body 17, and define with its axially lower end a lowermost linear adjustment position for the aperture 9. The sleeve body 17 surrounds the trained as a spindle threaded member 12 with radial clearance.

The following is based on the Fig. 2 and 3 the operation of the adjusting device 11 explained in more detail. Evident is the manually operable and rotatably mounted, designed as a spindle threaded member 12, which passes through the formed as a printed circuit board base plate 5, more precisely, an opening 18 provided therein. The non-illustrated longitudinal central axis, which coincides with the axis of rotation of the threaded element 12 is spaced and arranged parallel to the linear movement path of the aperture 9, which is guided in or from the carrier body 6 for the total of four sensor units 7. The panel 5 is, as explained, formed in the plan view substantially cross-shaped and has a thickened central portion 19, the peripheral wall in the the Sensor units 7 associated portions 20 is concavely curved to accommodate the cylindrical contour of the sensor units 7, more precisely, the frontal, circular peripheral edge. The sensor units 7, more precisely the active sensor surfaces 8, are inclined at an angle of about 45 ° to the linear trajectory coinciding with the longitudinal central axis of the carrier body 6 at an angle in the embodiment shown. The diaphragm 9 comprises in addition to the thickened central region 19 a total of four radial plate sections 21 (FIG. Radialfortsätze) extending from the central region 19 each in the radial direction to the outside. The radial plate sections 21 are arranged in a cross shape and each extend in a region between two circumferentially adjacent sensor units 7, so that in each case two juxtaposed sensor units 7 are spaced from each other via a radial plate section 21. The radial plate sections 21 each extend in a plane which is spanned by the linear trajectory of the diaphragm 9 and an imaginary radius line extending radially with respect to the linear trajectory.

The radial plate sections 21 not only have the task of influencing the detection range of the sensor units 7, but also serve to guide the diaphragm 9 during its linear adjustment movement. For this purpose, the radial plate sections 21 are each received in a radial slot 22 in serving as a guide body support body 6. In the exemplary embodiment shown, the radial plate sections 21 project beyond the carrier body 6 both in the axial and in the radial direction. The running on the threaded member radial plate portion 21 merges into a radial extension 15, which serves to guide the engagement portion 14. A total of four such radial sections 15 are provided, which are arranged in a cross shape and cooperate with linear guides 16 in the sleeve body 17.

The fact that the engagement portion engages with its internal thread in the outside thread (thread 13) of the threaded member 12 and due to the linear guide of the aperture 9 results from a manual, user-side rotational movement of the threaded member 12 is a linear adjustment movement the aperture 19 and that perpendicular to the in Fig. 1 shown base plate 5 and thus perpendicular to the surface extension or mounting plane of the lower housing part. 3

In Fig. 2 the shutter 9 is in its lowermost adjustment position, which is defined by the lower axial ends of the radial slots 22 and in the embodiment shown by the lower axial ends of the guides 16 (slots) in the sleeve body 17. In this lower position, the inwardly directed sensor units 7 have the largest detection range of 18m x 18m in the embodiment shown (in tangential direction of travel) at a mounting height of about 2.50m.

In Fig. 3 is the adjusting device 11 according to Fig. 2 shown in a maximum upwardly extended position. It can be seen that the field of view of the sensor units 7 is significantly limited by the linearly extended diaphragm 9.

In Fig. 4 is an inventive embodiment of an infrared motion sensor 1 with removed, by way of example in Fig. 7 shown, housing cover 2 shown. Evident is the lower housing part 3 of the sensor housing 4, in which a single sensor unit 7 is received. This is located on a preferably simultaneously serving as a printed circuit board base plate 5. The sensor unit 7 is surrounded by a later to be explained, telescopic aperture 9, which is associated with a spindle drive 10 as adjusting device 11 which is formed as in the embodiment according to the Fig. 1 to 3 , so that with regard to details of the spindle drive 10 reference is made to the aforementioned figures with associated description of the figures.

The housing lower part 3 may be formed in both alternatives for direct mounting on a wall or preferably ceiling surface and / or for mounting on a mounting support member (not shown), so that the lower housing part 3 must be removed from the fixed support member to operate the actuator to be able to.

In Fig. 5 the adjusting device 11 for the linear adjustment of the telescopic diaphragm 9 is shown in detail. Evident is the rotatably mounted spindle (threaded member 12) in the external thread (thread 13) engages an internal threaded engagement portion 14 which is integrally formed in the embodiment shown via an elongated radial extension 15 with a top frame 23 of the aperture 9. This top frame 23 includes an end opening 24 through which passes the detection area of the sensor unit 7. By rotating the threaded member 12 of the upper frame 23 of the diaphragm 9 is axially, ie linearly adjusted parallel to the longitudinal center axis of the threaded member 12 and perpendicular to the surface extension of the base plate 5 and the mounting surface or back surface extension of the housing base. 3

The frame 23 is closed on the circumference and the opening cross-section in the end face of the frame 23 tapers from an outer side in the direction of the sensor unit 7.

As it turned out Fig. 5 results, the uppermost frame 23 in a lower region radially inwardly pointing driver 25, which engage behind a peripheral edge 26 of a further, here middle frame 27 such that from a predetermined Linearverstellposition the uppermost frame 23, the middle frame 27 moves linearly. The middle frame 27 in turn engages with radially inwardly facing drivers 25 radially behind a peripheral edge 29 of the fixed in the illustrated embodiment, ie fixed to the base plate 5 bottom frame 30 thus limits the maximum extension height of the aperture 9. All frames 23, 27, 30 are circumferentially closed and the number of frames is individually adaptable to the particular circumstances. In each case, a frame arranged higher preferably engages in a frame arranged therebelow in such a way that the frame arranged at a higher level entrains the frame underneath during its adjustment movement when a certain adjustment height is exceeded.

In Fig. 5 is an approximately average adjustment of the aperture 9 shown, whereas in Fig. 6 the fully extended position of the aperture 9 is shown. It can be seen that the lowermost frame 30, due to the fixation on the base plate 5, limits the maximum extension height of the diaphragm 9 along the linear movement path spaced apart from the longitudinal center axis of the threaded element 12.

Fig. 7 shows, as already mentioned, a housing cover 2 of the sensor housing 4, which is usable with both embodiments described above. The housing cover 2 has a latching mechanism 31 for latching with the housing lower part 3 (see. Fig. 1 and 4 ) on. The housing cover 2 comprises a peripheral frame section 32 with operating elements 33, the frame section 32 enclosing an infrared-transparent lens unit 34. The lens unit 34 comprises a plurality of individual lens sections or lens segments which are formed and arranged such that the infrared radiation is focused on the sensor units. In the embodiment shown is a common lens unit 34 for the plurality of sensor units 7, wherein in an alternative embodiment, each group of sensor units or each sensor unit may be associated with a separate lens unit, preferably comprising a plurality of lens segments.

In Fig. 8 the lower housing part 3 is shown in a view from behind. Evident is the rear end face of the threaded element 12, which has a slot formed as a drive 35 to be operated by means of an operating tool, here a screwdriver can.

LIST OF REFERENCE NUMBERS

1

Infrared motion sensor

2

housing cover

3

Housing bottom

4

sensor housing

5

baseplate

6

support body

7

sensor unit

8th

sensor surface

9

cover

10

spindle drive

11

setting device

12

threaded element

13

thread

14

engaging portion

15

Radial extension

16

linear guides

17

sleeve body

18

opening

19

Central area

20

Peripheral section of the central area

21

Radial plate portion

22

radial slot

23

frame

24

frontal opening

25

takeaway

26

circumferential edge

27

middle frame

28

takeaway

29

circumferential edge

30

lowest frame

31

detent mechanism

32

frame section

33

operating element

34

lens unit

35

drive

Claims (13)

1. Infrared movement sensor comprising one or more stationary, infrared-sensitive sensor unit(s) (7) which is/are accommodated in a sensor housing (4), cooperate(s) optically with a stationary lens unit (34), is/are designed to output an electronic movement-detection signal and is/are spaced apart in a peripheral direction, and comprising means for changing and/or setting a detection range, in particular a maximum and/or minimum effective detection distance, which for changing and/or setting the detection range comprise a manually operable adjustment device (11), which is accommodated in the housing at least in part, for adjusting a screen (9) relative to the sensor unit(s) (7), characterised in that the adjustment device (11) comprises a manually operable threaded element (12) which is designed as a spindle or spindle nut and which, in response to rotary operation, causes a change in position of the screen (9) along a linear movement path, and in that the screen (9) is telescopically extendable, and in that the screen (9) comprises a plurality of interlocking frames (23, 27, 30), at least one frame (23) thereof being operatively connected to the threaded element (12).
2. Movement sensor according to claim 1, characterised in that the screen (9, 19) engages in the threaded element (12), via an engagement part designed as an internal thread part or external thread part or an engagement portion (14) which is integral with the screen (9) and designed as an internal thread portion or external thread portion.
3. Movement sensor according to claim 2, characterised in that the engagement part or the engagement portion (14) is arranged in a rotationally fixed manner.
4. Movement sensor according to either claim 2 or claim 3, characterised in that the engagement part or the engagement portion (14) is guided in a guide which extends parallel to the longitudinal central axis of the threaded element.
5. Movement sensor according to claim 4, characterised in that the guide is slot-like.
6. Movement sensor according to any of the preceding claims, characterised in that the linear movement path along which the screen (9) is adjustable is arranged parallel to and with spacing from a longitudinal central axis of the threaded element.
7. Movement sensor according to any of the preceding claims, characterised in that the threaded element (12) is self-locking.
8. Movement sensor according to any of the preceding claims, characterised in that the plurality of, preferably four, sensor units (7) which are spaced apart in the peripheral direction are provided to cover a detection range which extends through 360° overall.
9. Movement sensor according to any of the preceding claims, characterised in that the threaded element (12) is provided, on an end face accessible from outside the housing, a drive (35), in particular a slot drive, a cross slot drive, a hexagon drive or a torx drive, for cooperation with a rotation tool for manual operation.
10. Movement sensor according to any of the preceding claims, characterised in that the screen (9) and/or the threaded element (12) and/or the housing is/are designed as plastics part(s), in particular plastics injection-moulded part(s).
11. Movement sensor according to any of the preceding claims, characterised in that the sensor housing (4) comprises means for wall or ceiling mounting and/or for mounting on a mounting carrier part and the linear movement path along which the screen (9) is adjustable extends perpendicular to the surface extension of a rear side of the sensor housing (4).
12. Movement sensor according to any of the preceding claims, characterised in that the plurality of interlocking frames (23, 27, 30) of the screen are peripherally closed.
13. Movement sensor according to any of the preceding claims, characterised in that the at least one frame (23) of the interlocking frames (23, 27, 30) to which the threaded unit is operatively connected is an upper frame (23).

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