Presence detection equipment

Abstract

Presence detection equipment This presence detection equipment (10) comprises an infrared presence sensor (14), configured to detect the presence of movements in a detection zone, and a cover (34) having an opening (36), the cover being arranged opposite the infrared presence sensor so as to restrict the detection zone. To allow simple readjustment of the detection zone after installation of the presence detection equipment, the position of the cover (34) relative to the infrared presence sensor (14) is adjustable, along a depth axis (X) of the presence detection equipment, and the adjustment of the position of the cover relative to the infrared presence sensor results in a homothetic modification of the detection zone. Figure for abstract: 3

Description

Title of the invention: Presence detection equipment

[0001] The present invention relates to presence detection equipment.

[0002] In the field of urban lighting, it is common to equip a lighting device with presence detection equipment, designed to detect movement in a detection zone. Such presence detection equipment is generally used to reduce the light intensity of the lighting device when no movement is detected in the detection zone, thus making it possible to reduce the electrical consumption of the lighting device.

[0003] It is also known to adapt the shape of the detection zone according to the environment in which the lighting device is installed. For example, the detection zone may be elongated when it is desirable to detect movements on a sidewalk along a road without detecting movements on this road, or circular when it is desirable to maximize the detection zone. For this, such presence detection equipment generally comprises, in addition to a presence detector, a cover for restricting the detection zone. This cover is arranged opposite the presence detector, and is provided with an opening whose shape dictates the shape of the detection zone.

[0004] To easily adapt the detection zone of the presence detection equipment, it is known to use a cover comprising several breakable portions, the shape of the opening of which is adapted by detaching breakable portions. Thus, when installing the lighting device, the desired shape of the detection zone is obtained by detaching certain breakable portions of the cover. However, this system has the disadvantage of not allowing the detection zone to be readjusted after installation of the lighting device, and in particular when it is necessary to reorient or further restrict the detection zone, because the detached breakable portions cannot be reattached to the cover.

[0005] It is these drawbacks that the invention more particularly intends to remedy, by proposing presence detection equipment comprising an infrared presence sensor, configured to detect the presence of movements in a detection zone, and a cover provided with an opening, the cover being arranged opposite the infrared presence sensor so as to restrict the detection zone. According to the invention, the position of the cover relative to the infrared presence sensor is adjustable, along a depth axis of the presence detection equipment, and the adjustment of the position of the cover relative to the infrared presence sensor results in a homothetic modification of the detection zone.

[0006] Thanks to the invention, it is possible to readjust the detection zone after the installation of a lighting device comprising such presence detection equipment, this adjustment being carried out by adjusting the position of the cover relative to the infrared presence sensor.

[0007] According to advantageous, but not obligatory, aspects of the invention, this presence detection equipment incorporates one or more of the following characteristics, taken in isolation or in any technically admissible combination:

[0008] - The presence detection equipment further comprises a cover, for relative to which the infrared presence sensor is fixed, and a cover support, carrying the cover, the cover support being mounted on the cover in an arrangement allowing the position of the cover support to be adjusted relative to the cover, along the depth axis.

[0009] - The cover support can be removed from the cover without tools.

[0010] - One of the cover and the cover support comprises at least two grooves, each groove extending in a plane perpendicular to the depth axis, and the cover support is mounted on the cover by snap-fitting into one of the grooves.

[0011] - The cache support comprises at least two elastically deformable tabs, each elastically deformable tab comprising a retaining tooth extending into one of the grooves of the cover in the assembled configuration of the cover support on the cover.

[0012] - Each elastically deformable leg comprises an operating member allowing the mounting and dismounting of the cover support on the cover without tools, by deformation of the elastically deformable tabs.

[0013] - Adjusting the position of the cover support relative to the cover, along the axis depth, can be modified by dismantling and reassembling the cover support on the cover.

[0014] - The angular position of the cover support relative to the cover, in a plane perpendicular to the depth axis, is adjustable.

[0015] - One of the cover and the cover support includes several notches, the other of the cover and the cache support comprises at least one lug, and, in the assembled configuration of the cache support on the cover, each lug cooperates with a notch to constrain the angular position of the cache support relative to the cover.

[0016] - Adjusting the angular position of the cover support relative to the cover, in the plane perpendicular to the depth axis, can be modified by dismantling and then reassembling the cover support on the cover.

[0017] - The cover is held tight on the cover support by hooks.

[0018] - The cover forms an interior volume in which the infrared presence sensor red is at least partially disposed.

[0019] The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of presence detection equipment, given solely by way of example and with reference to the appended drawings, in which:

[0020] [Fig-1] [Fig.l] is a side view of an installation comprising equipment presence detection according to the invention;

[0021] [Fig.2] [Fig.2] is a perspective view of the presence detection equipment of [Fig.l];

[0022] [Fig.3] [Fig.3] is an exploded perspective view of the presence detection equipment of Figures 1 and 2;

[0023] [Fig.4] [Fig.4] is a view comparable to that of [Fig.3], from another angle;

[0024] [Fig.5] [Fig.5] is a rear view of part of the detection equipment of presence of figures 1 to 4; and

[0025] [Fig.6] [Fig.6] represents respectively, on four inserts a) to d), four covers which may belong to the presence detection equipment of figures 1 to 5.

[0026] An installation I comprising presence detection equipment 10 is visible in [Fig.l]. The presence detection equipment 10 is designed to cooperate with another device 12, such as for example a lighting device, or a security device. The presence detection equipment makes it possible in practice to inform the device 12 of the presence or absence of movement in a detection zone A, in order to modify the operation of the device 12 accordingly.

[0027] In the example, the device 12 is an urban lighting device. Thus, when the presence detection equipment 10 does not detect any movement in the detection zone A, it is possible to reduce the intensity of the lighting generated by the urban lighting device 12, thus reducing the electrical consumption of the urban lighting device.

[0028] X denotes a depth axis of the presence detection equipment 10, which is a main axis of the presence detection equipment. In the example of [Fig.l], the depth axis X is vertical. Alternatively, other orientations are possible for the presence detection equipment 10.

[0029] The presence detection equipment 10 comprises an infrared presence sensor 14, which is in practice a sensor sensitive to infrared light capable of detecting movement in its detection zone. The infrared presence sensor 14 is more commonly referred to as a “PIR sensor”, coming from the English acronym “PIR sensor” meaning “passive infrared sensor”.

[0030] The infrared presence sensor 14 comprises a lens 14A, one or more sensing elements and a microcontroller for controlling the sensing elements. In the figures, the sensing elements and the microcontroller are masked by the lens.

[0031] In a manner known per se, each capture element of the infrared presence sensor 14 has a field of vision which extends, from the lens 14A in the form of a detection volume C, which is in the example shown in the form of a cone of revolution with an axis parallel to the axis X. Thus, the detection zone A of the infrared presence sensor 14 is formed by the intersection of the detection cones C of the capture elements with an opaque surface, such as a wall towards which the detection cones C are oriented. In practice, depending on the shape of the detection volume of each capture element and depending on the distribution of the capture elements, the shape of the detection zone A can be rectangular, elliptical, oblong, or even polygonal.

[0032] For the sake of simplification, in the remainder of the description, it is considered that the infrared presence sensor 14 comprises a single capture element. Thus, in the example of [Fig. 1], a single detection cone C is shown.

[0033] In the example, the depth axis X being vertical and the detection cone C being directed downwards, the detection zone A is formed by the intersection of the detection cone C with a ground S on which the installation I is fixed.

[0034] In the example, the infrared presence sensor 14 is mounted on an electronic card 16, itself fixed to a connector 18. The electronic card 16 makes it possible to interpret the data coming from the infrared presence sensor 14 and to communicate this data with a communication bus, not shown, belonging to the installation I. Advantageously, a power source of the device 12 is also connected to the communication bus, the communication bus also allowing the transmission of energy supplying the presence detection equipment 10. The connector 18 allows the mechanical fixing of the presence detection equipment 10 to a support, which may for example belong to the device 12, and also allows the electrical connection of the electronic card 16 with the device 12.

[0035] The presence detection equipment 10 comprises a cover 20, which forms an interior volume V20 in which the infrared presence sensor 14 is at least partially arranged. In the example, the infrared presence sensor 14 is entirely arranged in the interior volume V20. Advantageously, the electronic card 16 is also arranged in the interior volume V20.

[0036] Here, the cover 20 comprises a side wall 22, which extends parallel to the axis X, and an end wall 24, which extends perpendicular to the axis X. The side walls 22 and end walls 24 delimit the interior volume V20. When the presence detection equipment 10 is assembled, the interior volume V20 is further closed by the connector 18, which is arranged opposite the end wall 24, along the axis X, being in contact with the side wall 22.

[0037] The end wall 24 has a central opening 26, through which the lens 14A of the infrared presence sensor 14 partially extends. Thus, the end wall 24 is not located in the field of vision of the capture element of the infrared presence sensor 14. In other words, the detection cone C is not restricted by the cover 20.

[0038] Preferably, the presence detection equipment 10 comprises two O-rings 28, 30. The O-ring 28 bears against the end wall 24 all around the central opening 26 and bears against the lens 14A and the O-ring 30 bears against the connector 18 and against the side wall 22. Thus, thanks to the O-rings 28 and 30, the interior volume V20 is sealed, that is to say it is isolated from the outside. The infrared presence sensor 14 and the electronic card 16 are therefore protected from water splashes, even when the presence detection equipment 10 is exposed to bad weather.

[0039] The presence detection equipment 10 comprises a cover support 32 and a cover 34, carried by the cover support 32.

[0040] In the example, the cover 34 is a flat plate extending perpendicular to the X axis. In a variant not shown, the cover 34 is a curved plate.

[0041] The cover 34 comprises an opening 36. The cover 34 is arranged opposite the infrared presence sensor 14 so that the detection cone C passes through the opening 36. In practice, the detection cone C is partially blocked by the cover 34, that is to say that only a part of the detection cone C passes through the opening 36, so that the cover restricts the detection zone A. Thus, the detection cone C is a cone of revolution with an axis parallel to the axis X from the lens 14A to the cover 34, then the shape of the detection cone C between the cover 34 and the ground S is modified by the cover 34. In other words, the cover 34 acts as an optical diaphragm.

[0042] In practice, after passing through the opening 36, a section of the detection cone C perpendicular to the axis X has the shape of the opening 36. Thus, the detection zone A also has the shape of the opening 36, when the axis X is perpendicular to the ground S, as in the example.

[0043] The cover support 32 is designed to be able to be mounted on the cover 20 by adjusting the position of the cover 34 relative to the infrared presence sensor 14, along the X axis, that is to say by adjusting the position of the cover support relative to the cover. In other words, at the time of mounting the cover support 32 on the cover 20, it is possible to choose the distance separating the cover 34 from the infrared presence sensor.

[0044] This adjustment of the distance separating the cover 34 from the infrared presence sensor 14 is particularly advantageous for modifying the size of the detection zone A. Indeed, by modifying this distance, the size of the detection zone A is modified without modifying its shape. This modification of the detection zone A is therefore a homothetic modification. In practice, the closer the cover 34 is to the infrared presence sensor 14, the larger the size of the detection zone A.

[0045] In the example, the cover support 32 has a side wall 38, which extends parallel to the axis X, and an end wall 40, which extends perpendicular to the axis X. The side walls 38 and end walls 40 delimit the interior volume V32. When the presence detection equipment 10 is assembled, the cover 20 is partially arranged in the interior volume V32.

[0046] The end wall 40 has a central opening 42, which is partially closed by the cover 34. In practice, the cover 34 is fixed against the end wall 40, preferably inside the interior volume V32, so that the opening 36 of the cover is opposite the central opening 42 of the end wall 40. The central opening 42 is larger than the opening 36 of the cover, so as not to restrict the detection cone C of the infrared presence sensor 14. In other words, the detection zone A is restricted by the cover 34, but is not restricted by the cover support 32.

[0047] In the example, to allow adjustment of the distance separating the cover 34 from the infrared presence sensor 14, the cover 20 has three grooves 44, which are here arranged on the side wall 22 of the cover, and the cover support 32 is mounted on the cover by snap-fastening into one of the three grooves 44. Each groove 44 extends in a plane perpendicular to the axis X and the three grooves 44 are thus offset from each other along the axis X. In a variant of the invention not shown, the cover has a different number of grooves 44, for example two or four grooves.

[0048] In the example, the grooves 44 are separated by a distance D44, measured along the X axis, between 1 mm and 10 mm, for example equal to 5 mm.

[0049] In practice, the cover support 32 comprises two elastically deformable tabs 46, each having a retaining tooth 48. When the cover support 32 is mounted on the cover 20, the retaining teeth 48 of the elastically deformable tabs 46 extend into one of the grooves 44 of the cover, thus keeping the cover support mounted on the cover. In a variant of the invention not shown, the cover support 32 has a different number of elastically deformable tabs 46, for example three tabs.

[0050] In a variant of the invention that is not shown, the cover support 32 comprises grooves, arranged on the elastically deformable tabs 46 inside the interior volume V32, and the cover 20 comprises ribs, arranged on the side wall 22 of the cover. In such a variant, the mounting of the cover support on the The cover is secured by snapping the ribs of the cover into the grooves of the cover support.

[0051] In a variant of the invention not shown, the cache support 32 is held on the cover 20 by means other than elastically deformable tabs having retaining teeth, such as for example using one or more screws installed on the cache support which are housed in one of the grooves 44 of the cover when they are screwed.

[0052] Thus, by choosing in which of the three grooves 44 the retaining teeth 48 are snapped, it is possible to adjust the position of the cover support 32 relative to the cover 20, and therefore to adjust the position of the cover 34 relative to the infrared presence sensor 14. In [Fig. 2], the cover support 32 is shown snapped onto the groove 44 closest to the connector 18. In this configuration, the detection zone A is maximum, since the cover 34 is closest to the infrared presence sensor 14.

[0053] Advantageously, each elastically deformable tab 46 comprises an operating member 50, allowing a user of the presence detection equipment 10 to deform the tabs 46 in order to allow the mounting of the cover support 32 on the cover 20, by engaging the retaining teeth 48 in one of the grooves 44, and also in order to allow the disassembly of the cover support, by moving the retaining teeth away from the groove 44 in which the teeth are engaged. In other words, the adjustment of the position of the cover support 32 relative to the cover 20, along the X axis, can be modified by disassembly and then reassembly of the cover support on the cover, that is to say by releasing the retaining teeth 48 from one of the grooves 44 and then snapping the retaining teeth into another of the grooves.

[0054] Thanks to the operating members 50, the mounting and dismounting of the cover support 32 is advantageously carried out without tools. Thus, the mounting of the cover support 32 is carried out solely by snap-fastening, more precisely by snap-fastening into one of the grooves 44, which is advantageous because the assembly of the presence detection equipment 10 is thus facilitated.

[0055] In a variant of the invention not shown, the elastically deformable tabs 46 do not include operating members 50. In such a variant, to disengage the retaining teeth 48 from the grooves 44, a user can for example insert the end of a flat tool, such as a flat screwdriver, between the side wall 22 of the cover 20 and the elastically deformable tabs 46.

[0056] In the example, the cover 34 is fixed to the cover support 32, bearing against the end wall 40, by clamping. Here, the cover support 32 comprises two hooks 52, arranged at the central opening 42 of the end wall 40, making it possible to grip the cover 34. When the cover 34 is fixed to the cover support 32, a first face 34A of the cover bears against the end wall 40 and a second face 34B of the cover bears against the hooks 52. Advantageously, the hooks 52 are elastically deformable, thus allowing the cover 34 to be dismantled by deformation of the hooks 52. In a variant of the invention not shown, the cover support 32 comprises a different number of hooks 52, for example three or four hooks. In a variant of the invention not shown, the cover 34 is fixed to the cover support 32 by other means, such as for example by screwing.

[0057] In order to prevent rotation of the cover 34 relative to the cover support 32 around the X axis, the cover 34 has several indentations 54, in the example three indentations, which cooperate with a corresponding number of studs 56 belonging to the cover support 32. When the cover 34 is fixed on the cover support 32, the studs 56 extend into the indentations 54, preventing rotation of the cover 34 on itself around the X axis. Advantageously, the indentations 54 also make it possible to position the cover 34 relative to the cover support 32 in a predetermined position and act as keying devices.

[0058] In a particularly advantageous manner, the angular position of the cover support 32 relative to the cover 20, in a plane perpendicular to the axis X, is adjustable. This adjustment is particularly useful when the opening 36 of the cover 34 is not circular, as in the example of FIGS. 2 to 5, since this adjustment allows a rotation of the detection zone A around the axis X, that is to say a modification of the orientation of the detection zone.

[0059] In the example, to allow this adjustment, the side walls 22 and 38 of the cover 20 and the cover support 32 are in the shape of a right circular cylinder. In addition, the cover 20 comprises several notches 58, distributed all around the side wall 22 at an equal distance from the axis X, and the cover support comprises at least one lug 60, here two lugs 60, arranged on the side wall 38 of the cover support, inside the volume V32. In the assembled configuration of the cover support 32 on the cover 20, each lug 60 is arranged in a notch 58, that is to say that each lug 60 cooperates with a notch 58, thus making it possible to constrain the angular position of the cover support relative to the cover.

[0060] In practice, the cover 20 comprises a number of notches greater than the number of lugs of the cover support. Thus, in the example, the cover 20 comprises 36 notches. In a variant of the invention not shown, the cover 20 comprises a different number of notches.

[0061] When a user mounts the cache support 32 on the cover 20, he chooses in which notches 58 the lugs 60 are inserted, thus determining the angular position of the cache support relative to the cover, in increments. Advantageously, the adjustment of the angular position of the cache support relative to the cover is mo can be disassembled and then reassembled by disassembling and then reassembling the cover support on the cover, choosing to insert the lugs 60 into different notches during reassembly. Since, in the example, the cover support 32 is snapped onto the cover 20, this disassembly and reassembly is also carried out without tools.

[0062] In a variant of the invention not shown, the notches 58 are provided on the side wall 38 of the cover support 32, inside the interior volume V32, and the lugs 60 are arranged on the side wall 22 of the cover 20.

[0063] Advantageously, the lugs 60 are of elongated shape along the X axis, allowing the lugs to be inserted into the notches 58 regardless of the groove 44 in which the retaining teeth 48 are engaged. Thus, the length L60 of the lugs 60, measured along the X axis, is advantageously greater than or equal to the distance D44 separating two consecutive grooves 44 multiplied by the number of grooves of the cover 20. In other words, the length L60 is at least equal to the distance separating the groove 44 closest to the cover 34 from the groove furthest from the cover. In the example, the length L60 is equal to 24 mm.

[0064] In the example, the notches 58 are arranged at the end of the side wall 22 closest to the end wall 24 and the lugs 60 extend over the entire depth of the side wall 38 of the cover support 32. This configuration is advantageous for facilitating the mounting of the cover support 32 on the cover 20 by a user, by making it possible to insert the lugs 60 into the notches 58 as soon as the cover enters the interior volume V32 of the cover support, that is to say before engaging the retaining teeth 48 in one of the grooves 44. It is thus easier for the user to choose into which notches 58 the lugs 60 must be inserted to obtain the desired orientation of the detection zone A.

[0065] Thanks to the arrangement of the cover 20 and the cover support 32, the presence detection equipment is particularly modular, since it is possible to choose the orientation of the detection zone A, by rotating the cover support relative to the cover around the X axis, and it is possible to choose the size of the detection zone A, by moving the cover 34 closer to or further away from the infrared presence sensor 14 by adjusting the position of the cover support relative to the cover along the X axis, which results in a homothetic modification of the detection zone A. Thus, it is possible to easily customize the detection zone A to adapt it to the constraints of the installation I. Here, this customization is also carried out without tools.

[0066] Furthermore, the presence detection equipment 10 makes it possible to easily modify the shape of the detection zone A, by changing the cover 34 mounted on the cover support 32 with another cover. Indeed, thanks to the fixing of the cover 34 by tightening with the hooks 52, the cover 34 is simple to dismantle, by maneuvering the hooks 52 so as to loosen the cover, then changing the cover with another having a opening of different shape, these operations being advantageously carried out without tools.

[0067] The fact that the cover 34 is a separate part from the cover support 32 is particularly advantageous for allowing its replacement economically. Indeed, the cover 34 is a particularly inexpensive part to manufacture, since it is a simple machined plate, made for example of plastic or metal. With the cover support 32 and the cover 20, which make it easy to modify the size and orientation of the detection zone A, and the cover 34, easy to change to adapt the shape of the detection zone A, the presence detection equipment 10 is particularly practical for adapting the detection zone A to the specific needs of each installation.

[0068] Furthermore, being able to dismantle the cover 34 even after assembly of the presence detection equipment 10 is particularly advantageous and makes it possible to modify the shape of the detection zone A during the lifetime of the installation I, for example if the shape required for the detection zone A changes.

[0069] The cover 34 of figures 2 to 5 is visible on the insert a) of [Fig. 6]. A second cover 134, a third cover 234 and a fourth cover 334 are respectively visible on the inserts b), c) and d) of [Fig. 6], as examples.

[0070] The covers 134, 234 and 334 all have an external shape and dimensions identical to those of the cover 34, and in particular have indentations 54. Thus, the covers 134, 234 and 334 can be fixed on the cover support 32 like the cover 34.

[0071] The covers 134, 234 and 334 respectively have an opening 136, 236 and 336, the shape of which differs from the shape of the opening 36 of the cover 34.

[0072] Thus, the opening 36 of the cover 34 is oblong in shape. This shape is advantageous when the presence detection equipment 10 is installed in an installation I where it is preferable to obtain an elongated detection zone A, for example to limit the detection zone to a pedestrian crossing, in order to detect any movement on this pedestrian crossing without detecting any movements occurring on either side of the pedestrian crossing.

[0073] The opening 136 of the cover 134 is circular in shape. This shape is advantageous when it is desirable to detect any movement only in a restricted area located under the presence detection equipment 10. Thus, in the example of [Fig. 1], such a shape would make it possible to restrict the detection of movement to a circular detection area located at the foot of the urban lighting device 12.

[0074] The opening 236 of the cover 234 is semi-circular in shape. This shape is advantageous when it is preferable to maximize the detection zone A on one side of the presence detection equipment 10, while not detecting any movements located on the other side of the presence detection equipment. For example, when the presence detection equipment is attached to the urban lighting device 12 and the urban lighting device is located at the boundary between a roadway and a sidewalk, the semi-circular shape of the opening 236 makes it possible to detect the movement of users located on the sidewalk without detecting the movement of users located on the roadway.

[0075] Other shapes for the openings of the covers can be envisaged, depending on the specific needs of each installation I. The opening 336 of the cover 334 is thus represented as any shape. In practice, it is possible to provide the cover 334 with an opening having any shape, depending on the needs of the installation. Thus, it is for example possible to provide in the cover an opening of triangular, elliptical, or other shape.

[0076] Preferably, the cover 20 and the cover support 32 are made of plastic, and are for example manufactured by injection.

[0077] In a variant of the invention not shown, the cover 34 is in one piece with the cover support 32.

[0078] Advantageously, the adjustment of the angular position of the cover support 32 relative to the cover 20, in a plane perpendicular to the axis X, can be obtained by means other than the notches 58 and lugs 60. For example, in a variant of the invention not shown, the cover support 32 is equipped with a screw with a conical tip, and the cover 20 is provided with a groove extending all around the side wall 22 of the cover, in a plane perpendicular to the axis X, the profile of the groove being complementary to the tip of the screw. By tightening the screw in the groove, the angular position of the cover support 32 is clamped. This variant of the invention has the advantage of allowing continuous adjustment of the angular position of the cover support, rather than by increments.To take into account the fact that the position of the cover support 32 relative to the cover 20 is adjustable, along the X axis, it is possible to arrange the screw in an oblong housing of the side wall 38 of the cover support 32, this housing extending along the X axis, making it possible to adjust the position of the screw relative to the cover support 32 so as to align the screw, along the X axis, with the groove. Alternatively, it is possible to provide as many grooves as grooves 44, so that the screw is aligned with a groove regardless of the groove in which the cover support is snapped. Alternatively, it is possible to tighten the screw directly in one of the grooves 44, without providing a dedicated groove for this purpose, the profile of the tip of the screw then being adapted to the profile of the grooves 44.

[0079] Advantageously, the adjustment of the position of the cover support 32 relative to the cover 20, along the axis X, can be obtained by means other than the grooves 44 and the retaining teeth 48. For example, in a variant of the invention not shown, the cover 20 does not have grooves 44, the outer face of the side wall 22 then being smooth, and the cover support 32 has, in the interior volume V32, claws extending from its side wall 38. These claws are provided in a hard material, for example metal, while the cover is made of a less hard material than the claws, for example plastic. When the cover support 32 is placed on the cover 20, the claws grip the cover, penetrating into the side wall 22 of the cover, and thus lock the position of the cover support relative to the cover along the X axis. This variant of the invention has the advantage of allowing continuous adjustment of the position of the cover support relative to the cover, along the X axis, rather than by increments.Furthermore, in such a variant, the claws also make it possible to lock the angular position of the cache support 32 relative to the cover 20, in a plane perpendicular to the axis X, and it is thus not necessary to provide the notches 58 and lugs 60 to carry out this locking of the angular position of the cache support. Preferably, in such a variant, the claws are arranged at the end of the elastically deformable tabs 46, so that the manipulation of the elastically deformable tabs using the operating members 50 disengages the claws from the side wall 22 of the cover 20, thus making it possible to reposition the cache support 32 relative to the cover, both along the axis X and in angular position.

[0080] Any feature described for a variant in the above may be implemented for the other variants described above, as long as technically feasible.

Claims

1.

2.

3. Claims Presence detection equipment (10), comprising: - an infrared presence sensor (14), configured to detect the presence of movements in a detection zone (A), and - a cover (34) comprising an opening (36), the cover (34) being arranged opposite the infrared presence sensor so as to restrict the detection zone, in which the position of the cover (34) relative to the infrared presence sensor (14) is adjustable, along a depth axis (X) of the presence detection equipment (10), and in that the adjustment of the position of the cover (34) relative to the infrared presence sensor (14) results in a homothetic modification of the detection zone (A), characterized in that the presence detection equipment (10) further comprises: - a cover (20), relative to which the infrared presence sensor (14) is fixed, and - a cover support (32), carrying the cover (34), the cover support (32) being mounted on the cover (20) in an arrangement allowing the position of the cover support (32) to be adjusted relative to the cover (20), along the depth axis (X) in that the opening (36) of the cover (34) is not circular, and in that an angular position of the cover support (32) relative to the cover (20), in a plane perpendicular to the depth axis (X), is adjustable. Presence detection equipment (10) according to claim 1, wherein the cover support (32) is removable from the cover (20) without tools. Presence detection equipment (10) according to any one of claims 1 or 2, wherein one of the cover (20) and the cover support (32) comprises at least two grooves (44), each groove (44) extending in a plane perpendicular to the axis of depth (X), and in which the cover support (32) is mounted on the cover (20) by snapping into one of the grooves (44).

4. Presence detection equipment (10) according to claim 3, in which the cover support (32) comprises at least two elastically deformable tabs (46), each elastically deformable tab (46) comprising a retaining tooth (48) extending into one of the grooves (44) of the cover (20) in the assembled configuration of the cover support (32) on the cover (20).

5. Presence detection equipment (10) according to claim 4, in which each elastically deformable tab (46) comprises an operating member (50) allowing the mounting and dismounting of the cover support (32) on the cover (20) without tools, by deformation of the elastically deformable tabs (46).

6. Presence detection equipment (10) according to any one of claims 1 to 5, in which the adjustment of the position of the cover support (32) relative to the cover (20), along the depth axis (X), can be modified by dismantling and then reassembling the cover support (32) on the cover (20).

7. Presence detection equipment (10) according to any one of claims 1 to 6, wherein one of the cover (20) and the cover support (32) comprises several notches (58), wherein the other of the cover (20) and the cover support (32) comprises at least one lug (60), and wherein, in the assembled configuration of the cover support (32) on the cover (20), each lug (60) cooperates with a notch (58) to constrain the angular position of the cover support (32) relative to the cover (20).

8. Presence detection equipment (10) according to any one of claims 1 to 7, in which the adjustment of the angular position of the cover support (32) relative to the cover (20), in the plane perpendicular to the depth axis (X), can be modified by dismantling and then reassembling the cover support (32) on the cover (20).

9. Presence detection equipment (10) according to any one of claims 1 to 8, in which the cover (34) is held tight on the cover support (32) by hooks (52).

10. Presence detection equipment (10) according to any one of claims 1 to 9, in which the cover (20) forms an interior volume (V20) in which the infrared presence sensor (14) is at least partially arranged.

Images