Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
  • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
  • B32B17/10467—Variable transmission
  • B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
  • B32B17/10513—Electrochromic layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
  • B32B17/10614—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer comprising particles for purposes other than dyeing
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles

Definitions

• TITLE Process for ordering opacifying glazing for a motor vehicle.
• the invention relates to a method for controlling opacifying glazing for a motor vehicle.
• the invention also relates to an opacifying glazing device for a motor vehicle.
• the invention also relates to a computer program implementing the mentioned method.
• the invention finally relates to a recording medium on which such a program is recorded.
• Motor vehicles equipped with a fixed glass roof or an opening roof are generally provided with a screening means which may be a flexible or rigid curtain and which open mechanically or electrically.
• This concealment means is essential for the visual and thermal comfort of motor vehicle users. However, it significantly increases the mass of the vehicle and reduces its habitability.
• opacifying glazing In order to reduce the mass and volume of the concealment means, solutions using opacifying glazing are being developed.
• the use of opacifying glazing also offers multiple possibilities for opacifying the passenger compartment.
• the object of the invention is to provide a device and a method for controlling opacifying glazing that overcomes the above drawbacks and improving the devices and methods for controlling opacifying glazing known from the prior art.
• the invention makes it possible to produce a device and a method which are simple and reliable and which allow intuitive, independent and gradual control of the opacity of each part of an opacifying glazing.
• the invention relates to a method for controlling an opacifying glazing for a motor vehicle, the glazing comprising at least two partitions, the level of opacity of each partition being controlled independently to change between a minimum value and a maximum value.
• a first type of command of the opacity level of a partition having an opacity level value of rank j, in particular a short press on a command button involves:
• Each partition of the glazing can be associated with a separate control element, for example associated with a separate control button.
• the method may include a step of automatic control of the glazing based on data from a set of sensors.
• the invention also relates to a device for controlling opacifying glazing, the device comprising hardware and/or software elements implementing the method as defined previously.
• the invention also relates to a motor vehicle equipped with a control device as defined above.
• the invention also relates to a computer program product comprising program code instructions recorded on a computer-readable medium for implementing the steps of the method as defined above when said program is running on a computer or computer program product.
• computer downloadable from a communication network and/or recorded on a data carrier readable by a computer and/or executable by a computer, characterized in that it comprises instructions which, when the program is executed by the computer, lead it to implement the method as defined above.
• the invention also relates to a data recording medium, readable by a computer, on which is recorded a computer program comprising program code instructions for implementing the method as defined above or recording medium machine-readable comprising instructions which, when they are executed by a computer, lead the latter to implement the method as defined previously.
• the invention also relates to a signal from a data medium, carrying the computer program product defined above.
• the appended drawing shows, by way of example, an embodiment of a glazing device according to the invention and an embodiment of a control method according to the invention.
• Figure 1 shows a motor vehicle equipped with a glazing device.
• Figure 2 shows a sectional view of an embodiment of opacifying glazing.
• Figure 3 shows an operating principle of opacifying glazing.
• Figure 4 shows an operating principle of opacifying glazing.
• Figure 5 shows a top view of an embodiment of opacifying glazing.
• Figure 6 schematically represents an embodiment of partitions and states of the opacifying glazing.
• Figure 7 shows one embodiment of a command interface.
• FIG. 8 represents a flowchart of a first mode of execution of a control method.
• Figure 9 illustrates a first operating logic of the opacifying glazing.
• FIG. 10 represents a flowchart of a second mode of execution of the control method
• Figure 11 illustrates a second operating logic of the opacifying glazing.
• An example of a motor vehicle 10 fitted with one embodiment of a glazing device 1 of an opacifying glazing is described below with reference to FIG. 1.
• the motor vehicle 10 can be a vehicle of any type, in particular a passenger vehicle or a utility vehicle.
• the glazing device 1 mainly comprises the following elements:
• an opacifying glazing 2 in particular an opacifying roof glazing
• FIG. 2 An embodiment of an opacifying glazing 2 is illustrated by Figures 2 to 5.
• Opacifying glazing 2 allows the implementation of a variable opacity of the glazing.
• the opacity of the glazing can be characterized by different physical quantities, in particular a percentage of transmission of light rays.
• the opacity can vary between at least two values, a minimum value OP1 corresponding to a state called “light state” or “transparent state” of the glazing, and a maximum value OPn corresponding to a state called “dark state” of the glazing.
• Different technologies also make it possible to implement intermediate states of opacification. This is particularly the case for PDLC technology (acronym for the English expression "Polymer Dispersed Liquid Crystal"), preferably described in this document.
• the opacifying glazing 2 comprises an opacifying film 25, in particular a PDLC film, laminated between two layers of glass 23, 27.
• a PDLC film consists of liquid crystals embedded in a resin polymer.
• a first and a second conductive layer 24, 26 are respectively arranged between the opacifying film 25 and each of the layers of glass 23, 27.
• the modification of opacity of the glazing is controlled by applying an electric voltage between the first and the second conductive layer 24, 26.
• the expression "opacity modification command” is used to designate the application of a voltage between the two conductive layers 24, 26 of the opacifying glazing, the applied voltage possibly being zero or non-zero.
• the glazing comprises at least two partitions or parts 21, 22, the level of opacity of each partition being controlled independently to change between the minimum opacity value OP1 and the maximum opacity value OPn.
• the glazing 2 is a motor vehicle roof glazing.
• the opacifying film was cut, in particular into two separate segments before it was shaped between two sheets of glass.
• the glazing 2 thus has two partitions 21, 22, respectively associated with the two segments of opacifying film. The cutting of the opacifying film into two separate segments thus makes it possible to independently control each of the two partitions defined by the segments in order to modify its opacity.
• the glazing device 1 has the role of implementing controls for all of the partitions 21, 22 of the opacifying glazing 2, which allows opacification (or increase in opacity) and de-opacification (or decrease in opacity ) independent and gradual of the opacity of each partition of the opacifying glazing 2.
• the level of each partition 21, 22 can change between a minimum value OP1 and a maximum value OPn.
• each partition takes a number n of opacity levels (OP1, ..., OPn) numbered in increasing order of opacity.
• n opacity levels
• the partitions 21, 22 are defined so as to allow differentiated opacification between the front and the rear of the vehicle, the partition 21 being located in the front part of the glazing and the partition 22 being located in the rear part of the glazing.
• a set of possible states for a glazing implementing the partitions 21, 22 is defined according to three levels of opacity, a minimum level OP1, an intermediate level OP2 and a maximum level OP3.
• the first state of the glazing V1 corresponds to the application of the maximum level of opacity OP3 to the two partitions 21, 22,
• the second state of the glazing V2 corresponds to the application of the minimum level of opacity OP1 to the two partitions 21, 22,
• the third state of the glazing V3 corresponds to the application of the intermediate opacity level OP2 to the two partitions 21, 22,
• the fourth state of the glazing V4 corresponds to the application of the minimum level of opacity OP1 to partition 21, and the application of the maximum level of opacity OP3 to partition 22,
• the fifth state of the glazing V5 corresponds to the application of the maximum level of opacity OP3 to partition 21, and the application of the minimum level of opacity OP1 to partition 22,
• the sixth state of the V6 glazing corresponds to the application of the intermediate opacity level OP2 to partition 21, and the application of the maximum opacity level OP3 to partition 22,
• the seventh state of glazing V7 corresponds to the application of the maximum opacity level OP3 to partition 21, and the application of the intermediate opacity level OP2 to partition 22,
• the eighth state of the V8 glazing corresponds to the application of the minimum opacity level OP1 to partition 21, and the application of the intermediate opacity level OP2 to partition 22,
• the ninth state of the glazing V9 corresponds to the application of the intermediate opacity level OP2 to partition 21, and the application of the minimum opacity level OP1 to partition 22.
• other sets of stable states of the glazing could be defined by varying the number of partitions and/or the number of opacity levels, the latter being greater than or equal to two.
• the partitions 21, 22 are defined so as to allow differentiated opacification between the front and the rear of the vehicle.
• other embodiments of the partitions could allow differentiated opacification between the right part and the left part of the vehicle.
• the glazing device 1 further comprises a control interface 4 which allows a user of the vehicle to select the state V1, V2, V3, V4, V5, V6, V7, V8, V9 of the glazing that he wishes to put in work in the motor vehicle 10.
• control interface 4 associates a control element with each partition 21, 22 of the glazing.
• the control interface 4 comprises two control elements 41, 42.
• the two control elements can be produced by two separate buttons 41, 42 or by a button comprising two support zones 41, 42.
• control interface could be a touch screen on which the partitions of the glazing are represented.
• control interface comprises as many control elements, in this case as many support zones, as partitions.
• the spatial arrangement of the control elements 41, 42 is defined in coherence with the spatial arrangement of the partitions. For example if a first and a second partitions 21, 22 are respectively arranged from front to rear of the vehicle, then a first and a second control element 41, 42 will be respectively arranged from front to rear of the vehicle, the first element of control 41 controlling the first partition 21, and the second control element 42 controlling the second partition.
• the button makes it possible to measure a duration of support DAPP. This measurement thus makes it possible to categorize the presses by comparing their duration with a threshold APPMIN.
• a press whose duration is strictly less than the APPMIN threshold will be considered as a “short press”
• a press whose duration is greater than or equal to the APPMIN threshold will be considered as a “long press”. Categorizing presses according to their duration makes it possible to differentiate processing according to the category of the press, as described later in this document.
• the button 4 can include a third control element 43, more specifically shown in Figure 11.
• the third control element 43 is preferably located between the first and second control elements 41, 42.
• the third control element 43 allows the activation of an automatic glazing control mode described later in the document.
• the command interface 4 could be carried out by a man-machine interface, which can, for example, be provided by the touch screen of the vehicle or a mobile phone application.
• the man-machine interface could make it possible to control the glazing 2 according to the same parameters as a physical button, i.e. the choice of a partition controlled to modify its opacity and a press duration DAPP. Instead of actually ordering a press duration, the user could select a type of press between two proposals, in particular a long press or a short press.
• the man-machine interface could make it possible to select a final state of the glazing from among all the possible states V1, V2, V3, V4, V5, V6, V7, V8, V9, for example by clicking directly on a visual representation of the states possible for glazing 2.
• man-machine interface could also include a voice command, allowing in particular to activate an automatic control of the glazing.
• the glazing device can also comprise a set of sensors 5.
• the set of sensors 5 provides data allowing the implementation of an automatic control of the glazing 2.
• the set of sensors 5 can comprise one or several sunlight sensors advantageously placed on the roof of the vehicle. The data from these sunlight sensors can be used to automatically determine which roof partitions need to be darkened to protect the passenger compartment from the sun's rays.
• the set of sensors 5 may comprise one or more temperature and/or sunshine sensors inside and/or outside, arranged on the vehicle automobile 10.
• the temperature and/or sunshine sensors can allow the implementation of an automatic control of the opacifying glazing, for example to reach and maintain a desired interior temperature.
• the information delivered by the at least one sensor can thus directly influence the partitions and/or the levels of opacity.
• the outside temperature sensors could make it possible to manage the influence of the outside temperature on the operation of the opaque roof. Indeed, very low temperatures greatly slow down the operation of the opacifying film, which clearly limits the possibilities of modifying the opacity of the glazing.
• the glazing device 1 could be deactivated when the outside temperature is below a temperature limit threshold, for example the limit threshold which can be between 0 and -20 degrees. The user would be informed of this deactivation in relation to the outside temperature.
• the glazing device 1 and particularly the microprocessor, mainly comprises the following modules:
• a module 31 for detecting a command to change the opacity of the glazing the module 31 being able to cooperate with the command interface 4,
• a module 32 for controlling the opacity of a partition the module being able to cooperate with the glazing 2
• module 33 for automatic control of the glazing, the module being able to cooperate with the glazing 2 and the set of sensors 5.
• the motor vehicle 10, in particular the glazing device 1, preferably comprises all the hardware and/or software elements configured so as to implement the method defined in the subject of the invention or the method described below.
• a first embodiment of the process for controlling an opacifying glazing is described below with reference to FIG. 8.
• a command to change the opacity of the glazing is detected at a time T.
• the detection step E1 comprises a sub-step E11 for determining a controlled partition and a sub-step E12 for determining a first or a second type of command.
• the detection of a command to change the opacity of the glazing is triggered by pressing a command button 4, in particular on the command elements 41, 42 of the button control.
• the sub-step E11 for determining a controlled partition comprises detecting a press on the control element 41 which determines the controlled partition as being the first partition 21 and/or a detection of a press on the control element 42 which determines the partition controlled as being the second partition 22.
• the sub-step E12 for determining a first or a second type of command can comprise a determination of the duration of pressing DAPP on the control button and a comparison of the duration of pressing DAPP with a minimum threshold APPMIN:
• the first type of command is determined by a short press, i.e. the duration of which is strictly less than the minimum threshold APPMIN, and
• the second type of command is determined by a long press whose duration is greater than or equal to the minimum threshold APPMIN.
• the ordered partition 21, 22 is a glazing partition which can take n levels of opacity (OP1, OPn) numbered in increasing order of opacity.
• step E2 the level of opacity of the ordered partition is modified according to the type of order detected in step E1 and according to the initial level of opacity of the ordered partition.
• Step E2 includes a sub-step E21 for determining an initial opacity of the ordered partition.
• the initial opacity corresponds to the opacity of the partition ordered at the time T when the opacity change command is issued.
• the opacity of a partition is determined by the voltage applied to the partition.
• a table of correspondence between voltage and opacity can determine a correspondence between each opacity value of the glazing OPi and a voltage Vi to be applied to a partition of the glazing to implement the level of opacity OPi.
• the index j of its initial level of opacity OPj is determined, j being between 1 and n inclusive.
• Step E2 further comprises a sub-step E22 for determining a final opacity of the ordered partition, from the initial opacity OPj and from the type of order.
• a command of the first type applied to a partition presenting an initial level of opacity OPj leads to:
• a command of the second type applied to a partition presenting an initial level of opacity OPj entails:
• a command of the first type is called “short press” and a command of the second type is called “long press”.
• a short press implements unitary opacity changes according to a decreasing loop or sequence on the opacity levels (OPn, ... ⁇ R1).
• a short press implements unit decreases in the value of the opacity level of a partition, performing successive transitions between the opacity levels (OPn, ... ⁇ R1).
• OP1 opacity level
• a short press has the effect of applying a maximum opacity level OPn to this partition.
• a short press implements unit opacity changes according to an increasing loop or sequence on the opacity levels (OP1, OPn).
• a short press implements unit increases in the value of the opacity level of a partition, performing successive transitions between the opacity levels (OP1, ....OPn).
• OP1, ....OPn the opacity levels
• a short press has the effect of applying a minimum opacity level OP1 to this partition.
• a long press has the effect of attributing to a partition a level of opacity either minimum or maximum.
• a long press will have the effect of assigning the partition a maximum level of opacity OPn, regardless of the running procedure, ascending or descending,
• a command of the second type, or long press will assign to the partition a level of minimum opacity OP1, whatever the execution procedure, increasing or decreasing,
• the level of opacity attributed to the partition following a long press depends on the execution procedure: a decreasing execution procedure will have the effect of allocating to the partition a minimum level of opacity OP1, and a procedure of increasing execution will have the effect of assigning to the partition a maximum level of opacity OPn.
• the final opacity level of an opacity partition initial OPj is determined according to the following processing:
• the final opacity level is OPn, regardless of the type of command, short press or long press.
• the final opacity level of an initial opacity partition OPj is determined according to the following processing:
• the final opacity level is OP1, regardless of the type of command, short press or long press.
• a long press could command -according to an increasing procedure- an increase of several levels or notches of opacity or of several units of the value of the opacity level, or -according to a decreasing procedure- a decrease of several levels or notches opacity or more units of the opacity level value.
• FIG. 9 illustrates the possible opacities modifications according to a decreasing execution procedure, for a glazing comprising two partitions 21, 22 which can each independently take three levels of opacity, a minimum level OP1, an intermediate level OP2 and a maximum level OP3.
• a command of the first type, or short press is represented by a thin arrow designating the actuated control element 41, 42.
• a command of the second type, or long press is represented by a thick arrow designating the activated control element 41, 42.
• FIG. 9 thus illustrates the transitions implemented by the method depending on the actuated control element 41, 42 and depending on the type of control, a short press or a long press.
• the partition opacity change command is defined to command a modification of the voltage applied between the first and second conductive layers 24, 26 of the controlled partition 21, 22.
• the value of the voltage to be applied can be determined in particular by the correspondence table between the opacity values of the glazing (OP1,.. OPn) and different voltage values (V1...Vn), the opacity level OPk being obtained on a partition 21, 22 by applying the voltage Vk between the first and second conductive layers 24, 26 of said partition.
• a second mode of execution of the control method comprising a step E3 of automatic control of the glazing is described by figure 10.
• step E1 comprises, in addition to the processing operations previously described for this step, a detection of an automatic mode activation command.
• the detection of a command to activate a mode automatic can be performed by detecting a press on the third control element 43.
• the detection of an automatic mode activation command can be carried out by means of a man-machine interface or a voice command.
• the man-machine interface or voice command can also be used to control a desired temperature in the passenger compartment.
• Step E3 includes a determination of a target level of opacity as a function of measurements from the set of sensors 5.
• the measurements can include one or more measurements of sunshine on the roof of the vehicle and/or a measurement of the outside temperature.
• the measurements also include a measurement of the temperature in the passenger compartment of the motor vehicle 10.
• Step E3 comprises a determination of a target temperature, corresponding to the temperature desired by the users in the passenger compartment.
• the target temperature can be determined by the user via a human machine interface and/or voice command.
• the target temperature can be determined by a default value, for example 20 degrees, or by a predetermined deviation from the outside temperature, the predetermined deviation being able to be a function of the outside temperature.
• a target level of opacity of the glazing is determined allowing the temperature of the passenger compartment to tend towards the target temperature.
• an air conditioning system can be installed. contribution to reaching the target temperature value.
• the means for controlling the glazing and the means for controlling the air conditioning device communicate with each other, or at the very least they simultaneously receive information from at least one temperature and/or sunshine sensor.
• step E3 all the partitions of the glazing are controlled simultaneously to implement the target opacity level uniformly over all of the partitions of the glazing corresponding to the implementation of a tenth state of the glazing V10 represented by FIG. 11.
• the tenth state of the glazing V10 may correspond to the state V3 implementing the intermediate opacity level OP2 in a uniform manner over all the partitions of the glazing.
• step E3 may comprise a selective modification of one or more of the at least two partitions 21, 22 of the glazing, in particular according to the insolation measurements making it possible to determine the direction of the light rays.
• Step E3 includes an update of the target opacity level as a function of the update of the measurements of the set of sensors 5.
• the opacity of all or part of the at least two partitions of the glazing is then modified according to the level updated target opacity for each partition.
• step E2 of detecting a opacity modification command when an opacity change command is detected, in particular by pressing one of the first and second locations 41, 42 of the button 4, step E2 of detecting a opacity modification command.
• the invention makes it possible to control an opacifying glazing in a simple and intuitive manner, each partition of the glazing being controlled independently to change its opacity by a given number of opacity levels.
• the simple and intuitive character of the invention comes first of all from the association between each partition of the glazing to be controlled and a single control element, in particular a button or a zone for pressing a button.
• the simple and intuitive character of the invention is reinforced by the possibility of making the opacity of a partition evolve according to a single variation cycle (configured to be either a cycle of increasing opacity, or a cycle of decreasing opacity).
• the invention makes it possible to implement a limited number of opacity levels, for example three or four levels, which allows a user to control the desired level of opacity with a limited number of presses.
• the commands are also simplified by the possibility of reaching a minimum or maximum level of opacity in a single press, of the long press type.
• the invention also presents the possibility of activating automatic control of the glazing according to a desired temperature and/or brightness in the passenger compartment.
• the automatic glazing could also be configured to use different sets of partitions and opacity levels depending on weather conditions.
• the glazing autopilot could use
• this first set of partitions and levels of opacity making it possible in particular to differentiate the opacity of the front and rear parts of the passenger compartment in order to adapt the opacity of the glazing according to the direction of the solar rays, and
• this second set of partitions and opacity levels making it possible, for example, to optimize the maintenance of a target temperature in the passenger compartment.

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• Physics & Mathematics (AREA)
• Nonlinear Science (AREA)
• Chemical & Material Sciences (AREA)
• Optics & Photonics (AREA)
• Mathematical Physics (AREA)
• Crystallography & Structural Chemistry (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Dispersion Chemistry (AREA)
• Liquid Crystal (AREA)
• Power-Operated Mechanisms For Wings (AREA)
• Window Of Vehicle (AREA)
• Control Of Stepping Motors (AREA)
• Fluid-Pressure Circuits (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)

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