Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
  • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/08—Roll-type closures
  • E06B9/11—Roller shutters
  • E06B9/15—Roller shutters with closing members formed of slats or the like
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
  • E06B9/08—Roll-type closures
  • E06B9/11—Roller shutters
  • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
  • E06B9/72—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
  • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
  • E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
  • E06B2009/6809—Control

Definitions

• the invention relates to a method for controlling a winding actuator of an occultation screen around a shaft.
• the invention also relates to a winding actuator of such a screen, this actuator being configured to implement such a method.
• the invention relates to a closure or sun protection system comprising such an actuator.
• a certain number of actuators are equipped with a spring brake which has the advantage of effectively accompanying the movements of the winding shaft, when it is driving relative to the screen.
• a spring brake masks the torque generated by the weight of the screen at the descent, which limits the performance of a technical solution based solely on the measurement of the torque delivered by the engine of the engine. actuator.
• the invention intends to remedy more particularly by proposing a new method of controlling a winding actuator of an occultation screen which makes it possible to take account of the real conditions of use of the actuator, with a particularly attractive cost, and which is not hindered by the use of a brake, in particular, of the spring or cam type.
• the invention relates to a method for controlling a winding actuator of an occultation screen around a winding shaft, this actuator comprising at least one electric motor, the method comprising at least a1 and a2 steps consisting, on the one hand, in detecting, with electronic means, a locking of the screen during a lowering or climbing stroke, by a detection of a torque exerted by the motor on the winding shaft, this torque being determined from a detected motor supply current and, secondly, to stop the motor when a signal representative of the detected current is greater than a current threshold value.
• the electronic means can be parameterized and this method comprises an additional step b, implemented when the signal representative of the detected current is less than the current threshold value, consisting of detecting a localized deformation of the screen, during the lowering stroke, using the same electronic means and on the basis of the detected current.
• Step b is complementary to steps a1, a2 and allows a finer detection, before the motor of the actuator does not force, via the screen, on stops or on a possible obstacle.
• the detection level used at this step can be adjusted according to the actual conditions of use of the actuator in a closure or sun protection system, taking into account, in particular, the size and weight of the screen, the diameter of the winding shaft and the environment of the actuator, in particular, the quality of the guide slides of the screen.
• such a method may incorporate one or more of the following features, taken in any technically permissible combination:
• Step b comprises at least elementary steps b1 to b4 consisting of:
• the second digital signal is created by applying to the first digital signal, in addition to the second digital processing, a shift processing value.
• the first digital processing and the second digital processing are of the same nature.
• the first digital processing and / or the second digital processing comprises or includes the application of a low-pass filter.
• the signal representative of the current is an image of an instantaneous value of this current and, during the elementary step b4, a blocking of the screen is considered imminent when the first digital signal is greater than the second digital signal.
• the signal representative of the current is an image of an instantaneous value of this current and, during the elementary step b4, a blocking of the screen is considered as imminent when the difference between the first digital signal and the second digital signal is greater than a predefined threshold.
• the method comprises a preliminary step c of setting the electronic means, according to a determined sensitivity level, in particular selected, for the detection of the imminent blocking of the screen and / or the ambient temperature of the actuator.
• the setting of the electronic means used for step b is independent of the setting used for steps a1 and a2.
• the invention also relates to a winding actuator of an occultation screen around a winding shaft, this actuator comprising at least one electric motor and electronic control means of this motor. According to the invention, these electronic means are configured to implement the method mentioned above.
• the electric motor is a synchronous motor with permanent magnets.
• the invention relates to a closure or solar protection system incorporating, inter alia, an actuator as mentioned above.
• FIG. 1 is a diagrammatic representation in perspective of a closure installation according to the invention incorporating an actuator according to the invention
• FIG. 2 is a partial and axial sectional view of the installation of FIG. 1,
• FIG. 3 is a block diagram of a control method according to the invention implemented in the installation of FIGS. 1 and 2,
• FIG. 4 is a schematic representation, as a function of time, of the quantities used in the method represented in FIG. 3, and
• FIG. 5 is a view on a larger scale of detail V in FIG. 4.
• Figures 4 and 5 should be considered as simulating the operation of the actuator because they do not take into account the shutdown of the actuator that can occur following the implementation of step b, as is apparent from the explanations that follow.
• the installation 2 represented in FIG. 1 comprises a screen or apron 4 formed by several blades 6 hinged together and which comprise a lower blade 62, intended to bear against the threshold of an opening O closed by the screen 4 in the low position, and an upper blade 64 attached to a winding shaft 8 by means of two joints or connecting elements 10, these connecting elements that can be rigid or flexible.
• the screen 4 consists of blades 6 fixed to each other so as to have a space between them, when the screen 4 is in a suspended position, that is to say when the screen 4 is not in the low stop position where all the blades 6 are stacked against each other so as to be contiguous.
• the winding shaft 8 is mounted inside a box 12, with possibility of rotation about an axis X2, which is horizontal and fixed, and which constitutes a central axis for the installation 2.
• the winding shaft 8 is rotated about the axis X2 by means of a tubular actuator 100, more particularly visible in FIG. 2, in which the screen 4 is shown in the partially raised position, this is in part wound around the winding shaft 8.
• the actuator 100 comprises a fixed cylindrical tube 101 in which is mounted a geared motor 102 which comprises a synchronous electric motor with permanent magnets 103, in the example a brushless motor with electronic commutations or "brushless”, as well as a spring brake 104 and a gearbox 105.
• Note 106 the output shaft of the reducer 105 which protrudes at one end 101 A of the fixed tube 101 and which drives a wheel 200 integral in rotation with the tube of the winding shaft 8.
• the winding shaft 8 rotates about the axis X2 and the fixed tube 101 through two pivot connections, one of which is provided by a bearing ring 210 mounted near the end 101 B of the opposite fixed tube 101 at the end 101 A.
• the second pivot connection which is not visible in the figures, is installed at the other end of the winding shaft 8.
• the actuator 100 also comprises a fastener or head 108, which protrudes from the end 101 B of the tube 101 and makes it possible to fix the actuator 100 on a lateral wall of the caisson 12.
• This fastener 108 also closes the tube 101 and supports an electronic unit 109 for controlling the supply of the motor 103 with electric current.
• the electronic unit 109 is supplied with AC voltage by a mains cable 220 and housed in the tube 101.
• the electronic unit 109 also comprises a unit, not shown, for controlling the sequential supply of the windings of the motor 103 which rectifies the supply voltage of the motor, by means of a bridge of diodes, filters this voltage, by means of capacity, and feeds sequentially each winding, by means of a module consisting of switches.
• the electronic unit 109 is designed to be in communication with a centralized control 30 or a remote control 32.
• a motion control command provided by the centralized control 30 or the remote control 32 causes a power supply of the motor 103 enabling it to drive the motor.
• winding shaft 8 in one direction or the other, in rotation about the axis X2, depending on the user's choice.
• a current I flows in an electrical conductor 107 which connects the electronic unit 109 to the motor 103 and is supplied sequentially to the different windings of the motor 103.
• the installation 2 also comprises two slides 14 which extend on either side of the opening O, below the box 12, and in which are respectively engaged the ends of the blades 6.
• a torque monitoring device 1092 is integrated with the electronic unit 109 and operates on the basis of monitoring the current I supplied to the motor 103 by the electronic unit 109.
• This current I is continuous and developed from the AC voltage delivered by the mains cable 220.
• the electronic unit 109 comprises a converter AC / DC 1094.
• This stop detection function is implemented in a first step of the method of the invention and adapted to detect a rapid and sudden change in torque when, following the arrival of the screen 4 on a stop, the screen 4 is unwound to be in stress, thus creating a rise in torque at the engine 103.
• the device 1092 comprises a microprocessor 1092A and a memory 1092B.
• the memory 1092B is preferably integrated with the microprocessor 1092A.
• the device 1092 also comprises an RC circuit 1092C which comprises a shunt resistor through which the motor power supply current 103 is measured, this shunt resistor being electrically connected to a supply module of this motor 103 and a mass which is at a reference voltage. Current I is sometimes referred to as "shunt current".
• the method shown schematically in FIG. 3, comprises a first elementary step 500 in the course of which the power supply current I of the motor 103 is acquired by the electronic unit 109.
• This current I constitutes an image of the torque C103 delivered by the motor 103 to the elements 104, 105 and 200 and, through them, to the winding shaft 8.
• the value of the current I is supplied to the microprocessor 1092A in the form of an analog signal representative of the value of the current I at each instant.
• this analog signal is transformed by the microprocessor 1092A into a digital signal S (7).
• a second elementary step 502 the value of the digital signal S (7) is compared with a reference value Iref.
• Elementary steps 500 and 502 together constitute a first step a1 of the method of the invention.
• the actuator 100 must unwind the screen 4, that is to say drive the winding shaft 108 in a direction of rotation about the axis X2 which corresponds to a lowering stroke of the screen 4, where the lower blade 62 is moved towards the threshold of the opening O.
• the screen 4 normally constitutes a driving load during this lowering stroke, in that its weight tends to rotate the winding shaft 8 in the desired direction of rotation.
• the current I measured by the electronic unit 109 to a substantially constant value which is related to the intrinsic characteristics of the motor 103, as well as those of the spring brake 104, the gear 105 and the diameter of the shaft This value is denoted I 0 in FIG. 4.
• the current I measured at the first elementary step 500 by means of the electronic unit 109, is representative of the holding torque C103 exerted by the motor 103 on the winding shaft 8.
• the screen 4 thus becomes a load to carry for the actuator 100 and the couple to exercise to continue moving the lower blade 62, or tend to move it according to the lowering stroke, becomes variable then increases strongly, so that the value of the current I exceeds the reference value Iref.
• step a1 it is checked whether the value of the signal S (7) is greater than the value Iref. If this is the case, the method detects a blocking of the screen 4 in its lowering stroke and a complementary step 504 is implemented, during which an audible or visual alarm is activated, whereas, possibly, actuator 100 is supplied with current to perform a reverse stroke, upstream of the screen 4, of limited amplitude to relieve the vertical stress on the screen 4 and the obstacle on which the lower blade 62 rests, before stopping the motor 103.
• the first elementary step 500 is again implemented, at the predetermined measurement frequency, ie 5 ms in the example.
• Elementary step 504 constitutes a second step a2 of the method of the invention which is implemented after step a1. Steps a1 and a2 are implemented to provide the stop detection function.
• steps a1 and a2 can also be implemented on an upward run of screen 4.
• the threshold values Iref used for the lowering stroke and the rising stroke are different.
• This stop detection function when lowering or climbing, can be deactivated or modified, depending on the conditions of use of the installation 2 and as can be seen from the explanations that follow.
• FIG. 4 shows the case where, during the lowering stroke of the screen 4, the latter encounters an obstacle after about 3 seconds after the start of its lowering movement, in practice 3.25s as visible with the point P in Figures 4 and 5, the screen 4 continues to unfold, then hangs and is compressed from about 9.5s.
• the curve C 0 represents the current I as a function of time.
• the screen 4 does not immediately start to compress. Indeed, for a few seconds, between 3.25s and about 9.5s, in the example of FIG.
• the actuator 100 can continue to rotate the shaft winding 8 in the lowering direction of the screen 4, which corresponds to the recovery of the vertical clearance between the blades 6 of the screen 4 located below the box 12 and a localized deformation of the screen 4 which tends to move radially away from the axis X2 while taking place inside the box 12.
• the current I oscillates with a total amplitude ⁇ around relatively low 0.
• the current I has significant fluctuations that are not taken into account by the stop detection function because they correspond to the start of the actuator 100.
• the current I is centered on the value l 0 which corresponds to the operation under driving load mentioned above. From the moment when an obstacle is encountered, as identified by the point P in FIGS. 4 and 5, the current I oscillates globally around the value l 0 with the amplitude ⁇ .
• the current I increases strongly and the value of the digital signal S (I) exceeds the value Iref, approximately 9.5 s after the start in the example of FIG. what is detected at the second elementary step 502, as explained above.
• the present invention makes it possible to anticipate the blocking of the screen 4 against an obstacle by adding, in addition to the stop detection function which is implemented in the first step a1, comprising the elementary steps 500 and 502, and which detects the C103 over-torque exerted by the motor 103 as a function of the exceeding of the value Iref by the value of the digital signal S (I), a protective function of the carrier product which is implemented in a second step b and which allows to react from the beginning of the phase of oscillations of the current I, that is to say at the earliest after the screen 4 has encountered an obstacle, when it is being deformed locally and temporarily, while the screen 4 has just become a driven load for the actuator 100.
• this protection function of the carrier product can detect an imminent blocking of the screen 4, before this blocking is effective.
• control method of the invention comprises, in addition to the elementary steps 500, 502 and 504, additional elementary steps 506 to 516 during which several operations are performed by the microprocessor 1092A of the electronic unit 109.
• elementary steps 506 and 516 are implemented by the same hardware as the elementary steps 500, 502 and 504, so that the function of protection of the carrier does not induce hardware overhead compared to the stop detection function.
• brace has covered steps a1 and a2 belonging to the stop detection function, implemented during the first process step, while brace b covers the steps specific to the protection function. of the carrier product, implemented during the second process step.
• the digital signal S (I) is averaged, for example over the last twelve measured values.
• the current I at the output of step 506 is a current averaged over the previous 60 ms.
• a first digital processing performed during the elementary step 508 makes it possible to generate a first processed digital signal Si.
• the curve Ci represents the signal Si as a function of time t. Note that this curve corresponds to a fixed current value for about the first second of the lowering movement of the deck 4. This corresponds to the setting of a preset value for the signal Si when the actuator 100 is started. value is very different from the value l 0 . In other words, the processing of the elementary step 508 is neutralized, for example, during the first second after the start of the lowering movement of the screen 4 and the signal Si retains the value. This avoids an unfounded detection of an obstacle due to the variations of the current I at the start of the engine 103.
• the signal Si is then processed in an additional elementary step 510 in the course of which a second digital processing is applied to this signal which becomes the signal S'i at the output of the elementary step 510.
• a third digital processing is applied to the signal S'i which then becomes a second processed digital signal S 2 .
• this third digital processing may be a signal shift in value.
• Such a value shift may also constitute the first or the second digital processing respectively implemented at the elementary steps 508 and 510.
• the first digital processing applied during the elementary step 508 can be the application of a low pass filter which can be finite or infinite impulse response, at the choice of the designer of the electronic unit 109.
• the second digital processing applied to the elementary step 510 is preferably of the same nature as that applied to the elementary step 508, with other specific parameters of this processing by modifying time constants which can have an influence, for example. example, on the gain or characteristic frequencies used.
• the first and second digital signals Si and S 2 are compared with each other in order to establish whether the actuator 100 is in a situation such that the screen 4 having encountered an obstacle is in the process of locally deformed below and / or inside the box 12, for example because it unfolds abnormally in the box 12, before the flow is completely blocked.
• This situation occurs in the example over a period of time At, which ranges from 3.25s to about 9.5s in Figure 4.
• the comparison of the elementary step 514 detect if the screen 4 is locally deformed, generating relatively small amplitude current variations, before being completely blocked and put in compression against the obstacle, from about 9, 5s.
• the curve C 2 represents the signal S 2 as a function of time t.
• the value of the digital signal S 2 is set to a value l 2 greater than the value and very different from the value l 0 , for the same reasons as those explained herein. above for the digital signal Si.
• the digital signal Si may be a smoothed version of the signal S (I), because of the digital processing applied to the elementary step 508.
• the digital processes respectively applied to the elementary steps 508, 510 and 512 it is possible to determine dynamically that an obstacle has been encountered, that the screen 4 is being unfolded abnormally in the box 12 and an imminent blocking of the screen 4 is to be expected by comparison between the first and second digital signals Si and S 2 .
• an imminent blocking of the screen 4 is determined when the first digital signal S 1; which is an image of the current I at this moment, takes a value greater than or equal to the second digital signal S 2 , which takes place from an instant t 2 indicated by the point Q in FIGS. 4 and 5.
• the imminent blocking of the screen 4 is determined when the second digital signal S 2 takes a value greater than or equal to the first digital signal Si.
• the imminent blocking of the screen 4 is determined when the offset ⁇ 1 / 2 between the instantaneous values of the first and second digital signals S1, S2 is greater than a predefined threshold.
• an elementary step 516 is implemented during which the motor 103 is stopped, an alarm is activated and / or a reverse movement of the actuator 100 is initiated then the motor 103 is stopped, according to an approach similar to that mentioned above for the elementary step 504.
• the elementary step 516 may be identical to the elementary step 504.
• the instant t 2 is at 3.47 s after the start of the lowering movement of the screen 4, ie 0.22 s after the obstacle has been encountered by the screen 4 at the moment ti.
• the protection function of the carrier product of step b makes it possible to obtain a reaction time, in the event of an obstacle on the lowering stroke, of the order of 0.2 s, whereas this reaction time is of the order of 6s, ie between 3.25s and about 9.5s, with the stop detection function of steps a1 and a2.
• the reactivity of the control means of the actuator 100 that is to say of the electronic unit 109, is thus improved by the protective function of the carrier product of the invention.
• the stop detection function can not, however, be replaced by the protective function of the load-bearing product because the former acts as a safety function, which is necessary in certain cases of use, for example at the stop on the low stop. where the progress of the screen 4 in the box 12 is very limited.
• the sensitivity of detection and the reactivity of the protection function of the carrier product may lead to false detections, which is not the case of the stop detection function.
• One and the other are therefore very complementary.
• the elementary steps 510 and 512 constitute a group of elementary steps 520 during which a kind of template or dynamic model formed by the digital signal S 2 and represented by the curve C 2 is created , to which the digital signal S 1; which substantially corresponds to the shunt current I after digital processing, is compared to the predetermined measurement frequency.
• This template or dynamic model S 2 corresponds to a value processed numerically from the digital signal Si.
• the invention makes it possible to take account of relatively low intensity current variations, ⁇ , around the value l 0 , after a start-up period of approximately 1 s, to anticipate a risk of blocking the screen 4, before that it does not actually become a charge carried out.
• the invention which is based on the detection of a phenomenon of deformation of the screen 4 which takes place during the period ⁇ t represented in FIG. 4, makes it possible to use this period to react if necessary. by means of the elementary step 516, before the output torque C103 delivered by the motor 103 increases strongly, to the point where the value of the digital signal S (I) reaches or exceeds the value Iref, as can be seen in FIG. 4.
• the protection function of the carrier product it is also possible to use the information provided by the protection function of the carrier product to adjust the detection threshold of the stop detection function.
• the protective function of the carrier product then corresponds to a function of anticipating a torque peak.
• the elementary steps 506 to 516 are implemented by the electronic unit 109 as well as the elementary steps 502 and 504, so that the detection of a deformation phenomenon of the screen 4 is obtained without it being necessary to to add control members in the actuator 100.
• the additional detection which makes it possible to anticipate a situation of blocking the screen 4 by means of the elementary steps 506 to 516, is based on calculations which in practice, do not require the addition of electronic components in the electronic unit 109, which includes typically the microprocessor 1092A and, most often, one or more data storage memories, such as the memory 1092B.
• the elementary steps 506 to 516 are performed in the electronic unit 109, it is possible to parameterize these steps by varying the digital values used by the microprocessor 1092A for the elementary steps 508, 510 and 51 2. For example, according to the digital processes applied in the elementary steps 508 and 51 0, it is possible to vary a filter cutoff frequency, characteristic frequencies or gains. As for the elementary step 512, the offset value can also be adjusted. These adjustments can be made by programming the electronic unit 1 09 by means of the centralized control 30, the remote control 32 or a computer temporarily connected to the electronic unit 109 during the commissioning of the installation 2.
• the configurable character of the electronic unit 1 09 makes it possible to take into account the data specific to the installation 2, such as the weight or the size of the screen 4 or such as the diameter of the winding shaft 8.
• configurable character of the electronic unit 1 09 also makes it possible to take into account the "quality" of the slides 14, that is to say of their truly rectilinear and vertical character and of their internal surface state, which can be reconciled since the installation 2 is either new or older.
• the parameterizable nature of the electronic unit 109 also makes it possible to take account of the ambient temperature which may have an influence on the behavior of the screen 4, in particular, in the case of a negative temperature, the sliding of the ends of the blades 6 in the slides 14 may have gel-related hard spots that can form, and this without additional temperature measurement.
• the electronic unit 109 starts by setting the electronic unit 109, that is to say adjust or adjust its operating parameters, depending on the sensitivity level selected for the detection of the deformation of the screen 4 and / or the ambient temperature.
• This setting or setting can be made by selecting certain values in memory 1 092B or by entering values into this memory.
• the parameterizable nature of the electronic unit 1 09 even makes it possible to deactivate the part of the process corresponding to the protection function of the carrier product and based on the detection of the deformation phenomenon of the screen 4, by choosing for the elementary steps 508, 510 and 512 parameters such that the signal Si remains permanently strictly lower than the signal S 2 . This may be the case for an installation 2 whose slides 14 are heavily damaged or that works in conditions of extreme temperature or load, in which case the carrier protection function is not suitable because it would induce false detections.
• the deactivation of the protection function of the carrier product can also occur in the case where hard points at the descent in the slides 14 are numerous and / or important, because the mechanics of the carrier product is not adapted, in particular following an excessive aging of the carrier product, or even during the renovation of an installation, during which the roller shutter is changed from a manual drive belt to a motorized drive, or a motorization evolution not compatible.
• the protective function of the carrier product can be deactivated to manage actuators mounted in installations not adapted to this solution, in particular, in terms of quality of the slides 14 or operating conditions.
• Deactivating the protective function of the carrier product or adjusting the sensitivity of the protective function of the carrier product according to the ambient temperature measured at the actuator 100 prevents the detection of a blockage. screen 4 is too sensitive.
• the deactivation or adjustment of the sensitivity of the protective function of the carrier product may be left to the initiative of the installer, which allows him to take into account the actual conditions of implementation of the installation 2, in particular when the apron 4 or its actuator 100 are degraded or mounted imperfectly.
• the independent character of the elementary steps 502 and 514 makes it possible to adjust independently the detection sensitivity of the torque C103 exerted by the motor 1 03, corresponding to the stop detection function, and, secondly, the detection of the deformation phenomenon of the screen 4 corresponding to the protection function of the carrier product.
• the reference value Iref can be set independently of the parameters used in the elementary steps 508, 510 and 512.
• the invention is represented in FIG. 3 in the case where the digital signal S (I) used at the elementary step 502 comes from the elementary step 506.
• the signal used at the elementary step 502 can be the signal S (I) from the elementary step 500 or the signal Si from the elementary step 508.
• the signal used in the step elementary 502 is averaged and optionally digitally processed, while remaining representative of the output torque C103 of the motor 103.
• the elementary step 506 and, optionally, the elementary step 508 belong to step a1.
• Elementary step 506 is optional. It can be omitted or integrated in the elementary step 508.
• FIGS. 1 and 2 The invention is shown in FIGS. 1 and 2 in the case of its use with a roller shutter screen 4 formed by a plurality of blades 6.
• a roller shutter screen 4 formed by a plurality of blades 6.
• the invention is particularly advantageous when the screen is a screen with blades or perforated members consisting of elements hinged together with a possibility of relative movements, such as blades or links of a grid, because the relative movements of these parts of the screen over the period At generate current variations such as those represented during this period in FIG. 4.

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• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Curtains And Furnishings For Windows Or Doors (AREA)

Applications Claiming Priority (2)

Publications (2)

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• 2014
  • 2014-07-25 FR FR1457211A patent/FR3024176B1/fr not_active Expired - Fee Related
• 2015
  • 2015-07-23 WO PCT/EP2015/066937 patent/WO2016012565A1/fr active Application Filing
  • 2015-07-23 EP EP15748197.9A patent/EP3172395B1/de active Active
  • 2015-07-23 CN CN201580039930.0A patent/CN106661916B/zh active Active
  • 2015-07-23 US US15/328,528 patent/US10174553B2/en active Active

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