Method for guiding a telescopic shelter, installation comprising a telescopic shelter equipped with at least one guiding device

Abstract

Method for guiding a telescopic shelter, installation comprising a telescopic shelter equipped with at least one guiding device The subject of the invention is a method for guiding a telescopic shelter (16) positioned on a platform (14) and using at least one guiding device comprising a transmitter (42) capable of emitting at least one beam (42.1) as well as a receiver (44) capable of receiving the beam (42.1). The method comprises a step of positioning on the platform (14) in a reference position at least a first element among the transmitter (42) and the receiver (44), a second element, different from the first element among the transmitter (42) and the receiver (44), being integral with the movable end module (20) of the telescopic shelter (16). According to the invention, the movable end module (20) of the telescopic shelter (16) is always correctly guided during the change of state (retracted / deployed) of the telescopic shelter.The invention also relates to an installation comprising a telescopic shelter equipped with a guidance device making it possible to implement the guidance method of the invention. Figure 1.

Description

Title of the invention: Method for guiding a telescopic shelter, installation comprising a telescopic shelter equipped with at least one guiding device

[0001] The present application relates to a method for guiding a telescopic shelter and to an installation comprising a telescopic shelter equipped with at least one guiding device making it possible to implement said method. The invention is more particularly suitable for telescopic shelters intended to cover swimming pools.

[0002] According to a known embodiment, a telescopic shelter suitable for covering a pool of a swimming pool comprises several modules including a fixed end module positioned at a first end of the pool and mobile modules capable of nesting into each other at the fixed end module. Thus, the telescopic shelter is configured to occupy a retracted state in which the modules are positioned on top of each other, at the first end of the pool, and a deployed state in which the modules are positioned next to each other and cover the pool. Between the retracted and deployed states, the mobile modules move on the platform surrounding the pool.

[0003] The various mobile modules comprise rolling elements in the lower part, such as wheels for example, to make them mobile. To facilitate the change of state (deployed / retracted) of the telescopic shelter, at least one mobile end module, in particular the one furthest from the fixed end module, is motorized. For this purpose, the mobile end module comprises at least two drive wheels positioned on either side of the pool.

[0004] To allow the transition from the retracted state to the deployed state and vice versa, it is necessary for the mobile modules to remain aligned with each other. Otherwise, one of the mobile modules may become stuck and block the deployment or retraction of the telescopic shelter.

[0005] Document FR2898926 proposes an optical guidance device for guiding mobile modules, without rails on the ground. Each device comprises a transmitter, configured to emit a light beam, secured to a first element among the fixed end module and the mobile end module, a multi-zone type receiver, configured to receive the light beam emitted by the transmitter, secured to a second element different from the first element among the fixed end module and the mobile end module as well as a processing unit configured to control the drive wheels, and in particular their advances, according to the zone of the re- receptors impacted by the light beam.

[0006] According to this document, the telescopic shelter comprises two guidance devices positioned on either side of the pool, a first guidance device comprising a first transmitter and a first multi-zone type receiver, positioned on a first side of the pool and associated with a first drive wheel positioned on this first side, as well as a second guidance device comprising a second transmitter and a second multi-zone type receiver, positioned on a second side of the pool and associated with a second drive wheel positioned on this second side. When the mobile modules are moving, the first and second transmitters permanently emit respectively first and second light beams impacting the first and second multi-zone type receivers.

[0007] According to this document, the guidance method consists of analyzing, for each multi-zone type receiver, the zone impacted by the light beam, determining a shift between the impacted zone and a central zone, determining, as a function of this shift, a compensation action consisting of accelerating or slowing down the rotation speed of at least one drive wheel. According to one operating mode, if the zone impacted by the light beam on one side of the pool moves away from the central zone, then the processing unit causes a slowing down or an acceleration of the drive wheel on this same side so that the light beam approaches the central zone again. According to another operating mode, the differences observed on the first and second receivers are transmitted to the same processing unit which ensures the coordination of the forward movements of the two drive wheels positioned on either side of the pool.

[0008] For this guidance device to function correctly, it is necessary for the fixed end module to be correctly positioned on the platform. Otherwise, the telescopic shelter is not correctly positioned relative to the pool in the deployed state. Following initial installation of the telescopic shelter by a professional, the fixed end module is correctly positioned and the telescopic shelter correctly covers the pool in the deployed state. However, in certain circumstances, it may be necessary to remove the telescopic shelter. Replacing the telescopic shelter, and in particular the fixed end module, by a non-professional may prove difficult. Thus, incorrect orientation of the fixed end module by a few degrees may cause the mobile end module to be offset by several tens of centimeters when the telescopic shelter is in the deployed state.

[0009] The present invention aims to remedy all or part of the drawbacks of the prior art.

[0010] To this end, the invention relates to a method for guiding a telescopic shelter positioned on a platform and comprising a fixed end module which is immobile by relative to the platform as well as a mobile end module capable of moving on the platform along a trajectory between a retracted state and a deployed state, the guidance method using at least one guidance device comprising a transmitter capable of emitting at least one beam and a receiver capable of receiving the beam emitted by the transmitter, the method comprising a step of determining an area of ​​the receiver impacted by the beam emitted by the transmitter as well as a step of managing the trajectory of the mobile end module as a function of the area of ​​the receiver impacted by the beam.

[0011] According to the invention, the guidance method comprises a step of positioning on the platform in a reference position at least a first element among the transmitter and the receiver, a second element, different from the first element among the transmitter and the receiver, being integral with the mobile end module.

[0012] Unlike the prior art which provides for positioning the transmitter and the receiver of the guidance device on the telescopic shelter, according to the invention, one element among the transmitter and the receiver is placed on the platform according to a reference position. Thus, even if the fixed end module is not perfectly oriented when it is fixed on the platform, the mobile end module of the telescopic shelter is always correctly guided when changing state (deployed / retracted) of the telescopic shelter.

[0013] The invention also relates to an installation comprising a telescopic shelter equipped with a guidance device making it possible to implement the guidance method of the invention.

[0014] Other characteristics and advantages will emerge from the description of the invention which follows, a description given by way of example only, with reference to the appended drawings, among which:

[0015] [Fig-1] is a perspective view of a telescopic shelter equipped with a guidance device illustrating an embodiment of the invention,

[0016] [Fig.2] is a schematic top view of a telescopic shelter equipped with a guide device illustrating an embodiment of the invention, in the retracted state on part (A) and in the deployed state on part B,

[0017] [Fig.3] is a schematic top view of a telescopic shelter equipped with a guiding device illustrating another embodiment of the invention,

[0018] [Fig.4] is a schematic top view of a telescopic shelter equipped with a guiding device illustrating another embodiment of the invention,

[0019] [Fig.5] is a perspective view of a transmitter illustrating an embodiment of the invention,

[0020] [Fig.6] is a perspective view of the transmitter visible in [Fig.5] showing its face inferior,

[0021] [Fig.7] is a perspective view of the transmitter visible in [Fig.5], in the disassembled state,

[0022] [Fig.8] is a perspective view of a receiver illustrating one embodiment of the invention,

[0023] [Fig.9] is a top view of a multi-zone receiver illustrating an embodiment of the invention,

[0024] [Fig. 10] is a schematic representation view of a motorization system for a mobile module of a telescopic shelter,

[0025] [Fig. 11] is a schematic side view of a beam emitted by a transmitter according to a first embodiment of the invention,

[0026] [Fig. 12] is a schematic side view of a beam emitted by a transmitter according to a second embodiment of the invention.

[0027] According to embodiments visible in Figures 1 to 4, a swimming pool 10 comprises a pool 12, a substantially flat and horizontal platform 14 surrounding the pool 12 as well as a telescopic shelter 16 configured to occupy a retracted state in which the telescopic shelter 16 at least partially uncovers the pool 12 and a deployed state in which the telescopic shelter 16 completely covers the pool 12.

[0028] The telescopic shelter 16 comprises a fixed end module 18 immobile relative to the platform 14, a mobile end module 20 and possibly at least one mobile intermediate module 22. According to the example illustrated in [Fig.l], the telescopic shelter 16 comprises two mobile intermediate modules. The mobile end and intermediate modules 20, 22 are configured to move along a trajectory parallel to a direction of movement DD between the deployed state and the retracted state. In the case of a rectangular pool 12, the direction of movement DD is substantially parallel to the long side of the pool 12.

[0029] Each module 18, 20, 22 comprises a first side 18.1, 20.1, 22.1 positioned to the right of the basin 12, a second side 18.2, 20.2, 22.2 positioned to the left of the basin 12 as well as a central part 18.3, 20.3, 22.3 connecting the first and second sides 18.1, 20.1, 22.1, 18.2, 20.2, 22.2, the latter being substantially parallel to the direction of movement DD. For each of the movable end and intermediate modules 20, 22, the first and second sides are provided with rolling elements (such as wheels for example) or any other means making it possible to move the corresponding module in the direction of movement DD.

[0030] The fixed and mobile end modules 18, 20 each comprise a transverse wall 24. According to one embodiment, this transverse wall 24 comprises a lower crosspiece 24.1 positioned close to the platform 14 and slightly offset upwards relative to the platform 14.

[0031] The different modules 18, 20, 22 are sized to fit into each other others. According to one variant, the fixed end module 18 is the largest module and the movable end module 20 is the smallest module. According to another variant, the fixed end module 18 could be the smallest and the movable end module 20 could be the largest.

[0032] The telescopic shelter 16 comprises at least one vertical median plane PMV. Each of the different modules 18, 20, 22 is substantially symmetrical with respect to the vertical median plane PMV.

[0033] The modules 18, 20, 22 are not described further because they are known to those skilled in the art and may be identical to those of the prior art.

[0034] Of course, the invention is not limited to this application, namely covering a basin 12 with a swimming pool 10. The telescopic shelter 16 can be integrated into any installation comprising a platform 14 of which at least one zone is covered by the telescopic shelter 16.

[0035] The telescopic shelter 16 comprises at least one first movement system 26 secured to the first side 20.1 of the mobile end module 20 as well as at least one second movement system 28 secured to the second side 20.2 of the mobile end module 20. Each movement system 26, 28 comprises at least one rolling element 30 in contact with the platform 14 as well as at least one motorization 32 configured to drive the rolling element 30 in rotation.

[0036] Each movement system 26 may comprise one or more rolling element(s) 30 and / or one or more motorization(s) 32. According to the example visible in [Fig. 10], each movement system 26 comprises two coupled motorizations. The number and power of the motorizations are determined as a function of the characteristics of the telescopic shelter 16 (in particular the mass of the mobile modules) and the characteristics of the platform 14 (in particular the slopes).

[0037] The first and second movement systems 26, 28 are powered by at least one power supply.

[0038] According to one configuration, the power supply is offset relative to the telescopic shelter 16.

[0039] According to another configuration, the telescopic shelter 16 comprises at least one on-board electrical energy source 34. According to one embodiment, the telescopic shelter 16 comprises at least one on-board electrical energy source 34 for each first or second movement system 26, 28. According to one configuration, the telescopic shelter 16 comprises, for each movement system 26, 28, on-board electrical energy sources 34, 34' of different types, such as at least one battery 34 and at least one photovoltaic panel 34'.

[0040] The telescopic shelter 16 comprises at least one servo device 36 configured to control the motors 32. According to one embodiment, the first and second movement systems 26, 28 each comprise at least one first or second servo device 36, 38.

[0041] According to one arrangement, each movement system 26, 28 comprises a box 40 configured to contain the motorization(s) 32, the servo peripheral 36, 38 and at least one on-board electrical energy source 34 such as a battery for example. This box 40 is fixed to the mobile end module 20, in particular to the chassis of this module.

[0042] Of course, the invention is not limited to this embodiment for the movement systems 26, 28.

[0043] The telescopic shelter 16 comprises at least one guidance device comprising at least one transmitter 42 configured to transmit a beam 42.1 as well as at least one receiver 44 configured to receive the beam 42.1.

[0044] According to embodiments visible in Figures 1, 2 and 4, the telescopic shelter 16 comprises a single guidance device comprising a transmitter 42 configured to emit a beam 42.1 as well as a receiver 44 configured to receive the beam 42.1. According to one arrangement, the transmitter 42, the beam 42.1 and the receiver 44 are aligned along a straight line parallel to the vertical median plane PMV. This straight line may be contained in the vertical median plane PMV or offset from the latter.

[0045] According to another embodiment visible in [Fig. 3], the telescopic shelter 16 comprises first and second guidance devices, the first guidance device comprising a first transmitter 42 configured to emit a first beam 42.1 as well as a first receiver 44 configured to receive the first beam 42.1, the second guidance device comprising a second transmitter 42' configured to emit a second beam 42.1' as well as a second receiver 44' configured to receive the second beam 42.1'. According to one arrangement, the first transmitter 42, the first beam 42.1 and the first receiver 44 are aligned along a first straight line substantially parallel to the vertical median plane PMV and substantially aligned with the first side 20.1 of the mobile end module 20. The second transmitter 42', the second beam 42.1' and the second receiver 44' are aligned along a second straight line substantially parallel to the vertical median plane PMV and substantially aligned with the second side 20.2 of the mobile end module 20. .

[0046] According to a characteristic of the invention, for each guidance device, a first ground element among the transmitter 42 and the receiver 44 is positioned on the platform 14 according to a reference position and immobilized relative to the latter. In addition, a second on-board element, different from the first element among the transmitter 42 and the receiver 44, is integral with the mobile end module 20.

[0047] According to one configuration, for each guidance device, the receiver 44 is so lidarized to the platform 14 and the transmitter 42 is integral with the mobile end module 20.

[0048] According to another configuration, for each guidance device, the transmitter 42 is placed on the platform 14 and immobilized relative to the latter while the receiver 44 is integral with the mobile end module 20. According to a first variant visible in [Fig. 2], the fixed end module 18 is interposed between the transmitter 42 and the receiver 44. According to this variant, the beam 42.1 passes through at least one transverse wall 24 and passes above the basin 12. According to a second variant visible in FIGS. 1, 3 and 4, the transmitter 42 is positioned on the platform so as to be further away from the fixed end module 18 than from the mobile end module 20 when the telescopic shelter is in the deployed state. According to this variant, the beam 42.1 does not pass through any transverse wall 24 and does not pass above the basin 12. This solution limits the risks of disturbances to the beam 42.1.

[0049] In the presence of a single guide device, the receiver 44 is fixed on the lower crosspiece 24.1 of the transverse wall 24 of the movable end module 20. Of course, the invention is not limited to this arrangement.

[0050] In the presence of two guidance devices, the first receiver 44 is integral with the first movement system 26 and integrated into its box 40. In addition, the second receiver 44' is integral with the second movement system 28 and integrated into its box 40.

[0051] According to one embodiment, the transmitter 42 is permanently connected to the platform 14.

[0052] According to a preferred embodiment, the transmitter 42 is removable and placed on the platform 14 according to the reference position. According to this embodiment, each guidance device comprises a first housing 46 integrating the transmitter 42 which comprises a lower face 46.1 configured to be placed on the platform 14 according to the reference position.

[0053] In order for the transmitter 42 to be positioned in the reference position, the platform 14 comprises at least one marking configured to identify the reference position and allow a user to position the transmitter relative to this marking. For example, the marking comprises two disc-shaped marks on the platform 14 and the transmitter 42 comprises two orifices adjusted to the points. The transmitter 42 is correctly positioned if the user positions it so as to make the points and the orifices coincide.

[0054] According to a preferred embodiment, each transmitter 42 and the platform 14 have shapes which cooperate with each other so as to immobilize the transmitter 42 in a single position corresponding to the reference position. According to one configuration, the platform 14 comprises at least two imprints (hollow relative to on its upper face). In addition, the first housing 46 comprises at least two pins 48 projecting from its lower face 46.1, each pin 48 having a section adjusted to that of an imprint. The pins 48 and the imprints are cylindrical and have substantially the same diameter.

[0055] The invention is not limited to these solutions for positioning the removable transmitter 42 according to the reference position on the platform 14.

[0056] According to one embodiment, the first housing 46 comprises first and second parts 50.1, 50.2 which fit together so as to delimit a cavity, the first part comprising the lower face 46.1.

[0057] The transmitter 42 comprises a beam generator 52 configured to emit the beam 42.1 as well as an energy source 54 (such as a battery) configured to supply energy to the beam generator 52. According to one operating mode, the beam generator 52 is configured to occupy an activated state in which it emits the beam 42.1 and a deactivated state in which it does not emit beam 42.1. In this case, the transmitter 42 comprises a control configured to control the activated or deactivated state of the beam generator 52. These elements are positioned in the cavity delimited by the first and second parts 50.1, 50.2 of the first housing 46.

[0058] According to an embodiment given for information purposes, the beam generator 52 is configured to emit a laser beam which has a power of less than 15 mW and a wavelength of 650 nm.

[0059] Of course, the invention is not limited to this embodiment for the transmitter 42 and the first housing 46. In addition, the beam 42.1 is not necessarily a light beam. Each transmitter 42 can operate continuously or only when the transmitter 42 is in an activated state. According to one configuration, each transmitter 42 is configured so as to emit a beam 42.1 which has a different wavelength and as far as possible from those of the sources of disturbance, such as daylight or sun rays, so as to discriminate it more easily. The transmitter 42 can be configured to modulate the emitted beam 42.1.

[0060] According to a first embodiment visible in [Fig.l 1], the beam generator 52 is configured to emit a beam in the shape of a fixed straight line, which makes it possible to obtain a single point of impact in a vertical impact plane perpendicular to the beam 42.1. According to this first embodiment, the beam generator 52 is positioned in the first housing 46 so that the emitted beam 42.1 is substantially parallel to the lower face 46.1. Thus, in operation, the beam 42.1 is substantially parallel to the platform 14.

[0061] According to a second embodiment visible in [Fig.12], the beam generator 52 is configured to emit a straight-line beam performing a scan in a vertical plane over an angular sector of the order of 10° or for emit a beam in the form of an angular sector positioned in a vertical plane and measuring of the order of 10°. According to this second embodiment, the beam generator 52 is configured to emit at least one beam 42.1 which generates several points of impact distributed over a vertical segment. This solution makes it possible to compensate for any defects in the flatness of the platform 14 or in the inclination of the platform 14.

[0062] As illustrated in [Fig.9], the receiver 44 has a photosensitive plate 58 which has an impact face F58 which is substantially vertical and positioned in a plane which is substantially perpendicular to the direction of movement DD. According to one configuration, the receiver 44 comprises a plate 58 as well as a plurality of sensors 60 positioned on the impact face F58 and distributed along at least one substantially horizontal straight line.

[0063] To give an order of magnitude, each sensor 60 has a square surface of approximately 1 mm on each side, the sensors 60 being spaced apart by a distance of the order of 1 mm. The sensors 60 are photosensitive sensors (photodiodes, phototransistors) configured to emit a signal when they are impacted by a beam 42.1. The receiver 44 may comprise a central sensor 60 as well as secondary sensors 60' distributed on either side of the central sensor 60. The receiver 44 is configured to emit at least one signal depending on the central or secondary sensor 60, 60' impacted by the beam 42.1 emitted by the transmitter 42 associated with the receiver 44.

[0064] Of course, the invention is not limited to this type of sensors or to these shapes, these dimensions and this spacing for the sensors 60, 60'. Each receiver 44 may comprise only one element such as a camera or a linear camera for example. Whatever the embodiment, each receiver 44 is configured to generate at least one signal as a function of a comparison between an area of ​​the receiver impacted by the beam 42.1 and a reference point corresponding to the central sensor 60 in the case of a plurality of sensors 60, 60'.

[0065] According to one embodiment, each receiver 44 comprises a second housing 62 which has a first slot 62.1 in line with which at least one photosensitive element (photosensitive sensors or photosensitive panel) is positioned.

[0066] According to one configuration, the receiver 44 comprises a filtration system to promote the passage through the first slot 62.1 of the beam 42.1 emitted by the transmitter 42 and to limit the passage of other light fluxes such as daylight or sun rays for example. This filtration system may be of the optical type and comprise a plate, positioned at the first slot 62.1, transparent for a range of wavelengths including the wavelength of the beam 42.1 emitted by the transmitter 42 and reflective for the light fluxes which have wavelengths located outside said range.

[0067] According to another solution, the filtration system is of the mechanical type and comprises a deflector making it possible to reflect the disturbing light fluxes so that they do not impact the sensors 60, 60'. According to another embodiment, the receiver 44 comprises a plate 64 several millimeters thick, pressed against the face of the second housing 62 at the level of which the first slot 62.1 is formed. This plate 64 comprises a second slot 64.2, in line with which each photosensitive element of the receiver 44 is positioned, which has the same dimensions as the first slot 62.1 of the second housing 62 and coincides with the latter. This plate 64 is made of a black material. Given its thickness, this plate 64 prevents the sun's rays from impacting the photosensitive element(s).

[0068] According to an embodiment visible in [Fig.8], the second housing 62 and the plate 64 are two separate parts. Alternatively, the plate 64 forms one of the walls of the second housing 62.

[0069] According to a configuration visible in [Fig.3], a receiver 44 and its second housing 62 are integrated into the box 40 of each movement system 26, 28.

[0070] According to another configuration visible in [Fig. 10], a receiver 44 and its second housing 62 are integrated into the box 40 of a single movement system 26.

[0071] According to another configuration visible in figures 1, 2 and 4, the receiver 44 and its second housing 62 are fixed on the lower crosspiece 24.1 of the transverse wall 24 of the mobile end module 20.

[0072] Whatever the configuration of the receiver 44, for each guidance device, the receiver 44 is positioned at a height relative to the platform 14 such that the photosensitive element(s) are positioned in the reference plane to be impacted by the beam 42.1 emitted by the transmitter 42. The transmitter 42 and the receiver 44 of the same guidance device are positioned so that the beam 42.1 emitted by the transmitter 42 impacts the reference point (the central sensor 60) when the mobile end module 20 is correctly oriented.

[0073] According to a feature of the invention, the guidance device comprises at least one processing unit 66 configured to control each servo peripheral 36, 38 as a function of the signal emitted by the receiver(s) 44. According to one configuration, the guidance device comprises a single receiver 44 as well as a single processing unit 66 configured to control the first and second servo peripherals 36, 38 positioned on either side of the mobile end module 20. According to another configuration, the guidance device comprises first and second receivers 44, 44', a single processing unit 66 as well as first and second servo peripherals 36, 38.

[0074] The processing unit 66 is configured to determine at least one compensation action as a function of the signal(s) generated by the receiver(s) 44 and control the servo peripherals 36, 38 according to the compensation action determined previously. More generally, the processing unit 66 is configured to manage the trajectory of the mobile end module 20 according to the area of ​​the receiver 44 impacted by the beam emitted by the transmitter 42.

[0075] Whatever the embodiment, a guidance method comprises a step of positioning on the platform 14 in a reference position at least a first element among the transmitter 42 and the receiver 44, a second element, different from the first element among the transmitter 42 and the receiver 44, being integral with the mobile end module 20, a step of determining a zone of the receiver impacted by the beam 42.1 emitted by the transmitter 42 as well as a step of managing the trajectory of the mobile end module 20 as a function of the zone of the receiver 44 impacted by the beam 42.1 emitted by the transmitter 42.

[0076] According to one operating mode, the transmitter 42 of each guidance device is placed on the platform 14 during each change of state (retracted / deployed) of the telescopic shelter 16, the transmitter 42 being able to be removed from the platform 14 outside of a change of state of the telescopic shelter 16.

[0077] The guidance method comprises a step of activating the transmitter 42 at least during a change of state (retracted / deployed) of the telescopic shelter 16, the transmitter 42 being able to be in a deactivated state and not to emit a beam 42.1 outside of a change of state of the telescopic shelter 16.

[0078] According to one operating mode, the guidance method comprises a step of comparing the area of ​​the receiver 44 impacted by the beam 42.1 and a reference point, a step of determining a compensation action as a function of the comparison between the area of ​​the receiver 44 impacted by the beam 42.1 and the reference point as well as a step of modifying the trajectory of the mobile end module 20 as a function of the compensation action determined in the previous step. According to one configuration, the compensation action may consist of differentiating the advance speeds of the first and second movement systems 26, 28, the advance speed of one of the movement systems being increased or reduced relative to that of the other movement system so as to cause a change in trajectory of the mobile end module 20.

Claims

Claims

1. A method of guiding a telescopic shelter (16) positioned on a platform (14) and comprising a fixed end module (18) immobile relative to the platform (14), a mobile end module (20) capable of moving on the platform (14) along a trajectory between a retracted state and a deployed state, the guiding method using at least one guiding device comprising a transmitter (42) capable of emitting at least one beam (42.1) as well as a receiver (44) capable of receiving the beam (42.1) emitted by the transmitter (42), the method comprising a step of determining an area of the receiver (44) impacted by the beam (42.1) emitted by the transmitter (42) as well as a step of managing the trajectory of the mobile end module (20) as a function of the area of the receiver (44) impacted by the beam (42.1); characterized in that the guiding method comprises a step of positioning on the platform (14) in a reference position at least a first element among the transmitter (42) and the receiver (44), a second element, different from the first element among the transmitter (42) and the receiver (44), being integral with the mobile end module (20).

2. Guidance method according to claim 1, characterized in that the transmitter (42) of each guidance device is placed on the platform (14) during each change of state of the telescopic shelter (16), the transmitter (42) being removable and capable of being removed from the platform (14).

3. Installation comprising a platform (14) and a telescopic shelter (16) positioned on the platform (14), comprising a fixed end module (18) immobile relative to the platform (14) and a mobile end module (20) capable of moving on the platform (14) along a trajectory between a retracted state and a deployed state, the telescopic shelter (16) comprising at least one guidance device which comprises a transmitter (42) capable of emitting at least one beam (42.1), a receiver (44) configured to receive the beam (42.1) and a processing unit (66) configured to manage the trajectory of the mobile end module (20) as a function of the area of the receiver (44) impacted by the beam (42.1) emitted by the transmitter (42); characterized in that, for each guidance device, a first element among the transmitter (42) and the receiver (44) is positioned on the platform (14) according to a reference position, a second element, different from the first element among the transmitter (42) and the receiver (44), being. secured to the mobile end module (20).

4. Installation according to the preceding claim, characterized in that the telescopic shelter (16) comprises a vertical median plane (PMV) as well as a single guidance device, the transmitter (42), the beam (42.1) and the receiver (44) being aligned along a straight line parallel to the vertical median plane (PMV).

5. Installation according to one of claims 3 to 4, characterized in that the transmitter (42) is positioned on the platform (14) so as to be further away from the fixed end module (18) than from the mobile end module (20) in the deployed state.

6. Installation according to one of claims 3 to 5, characterized in that, for each guidance device, the transmitter (42) is removable and placed on the platform (14) and immobilized relative to the platform (14) in the reference position.

7. Installation according to the preceding claim, characterized in that the transmitter (42) and the platform (14) have shapes which cooperate with each other so as to immobilize the transmitter (42) in a single position corresponding to the reference position.

8. Installation according to one of claims 3 to 7, characterized in that each transmitter (42) is configured so as to emit a beam (42.1) which has a different wavelength and is as far away as possible from those of the sources of disturbance.

9. Installation according to one of claims 3 to 8, characterized in that the transmitter (42) comprises a beam generator (52) configured to emit at least one beam (42.1) which generates several impact points distributed over a vertical segment.

10. Installation according to one of claims 3 to 9, characterized in that each receiver (44) comprises a second housing (62) which has a first slot (62.1) in line with which at least one photosensitive element is positioned.

11. Installation according to the preceding claim, characterized in that the receiver (44) comprises a filtration system to promote the passage through the first slot (62.1) of the beam (42.1) emitted by the transmitter (42) and limit the passage of other light fluxes.

12. Installation according to the preceding claim, characterized in that the receiver (44) comprises a plate (64) several millimeters thick having a slot (64.2) in line with which each photosensitive element of the receiver (44) is positioned.

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