WO2022254341A1 - Module prismatique pour contrôle acoustique réglable, panneau, procédé de fonctionnement et procédé de fabrication respectif - Google Patents

Module prismatique pour contrôle acoustique réglable, panneau, procédé de fonctionnement et procédé de fabrication respectif Download PDF

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Publication number
WO2022254341A1
WO2022254341A1 PCT/IB2022/055093 IB2022055093W WO2022254341A1 WO 2022254341 A1 WO2022254341 A1 WO 2022254341A1 IB 2022055093 W IB2022055093 W IB 2022055093W WO 2022254341 A1 WO2022254341 A1 WO 2022254341A1
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WO
WIPO (PCT)
Prior art keywords
rod
liner
prismatic
module
coating
Prior art date
Application number
PCT/IB2022/055093
Other languages
English (en)
Portuguese (pt)
Inventor
António Bernardo MENDES DE SEIÇA DA PROVIDÊNCIA SANTARÉM
Bruno Daniel VIEIRA GOMES
Original Assignee
Universidade Do Minho
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidade Do Minho filed Critical Universidade Do Minho
Publication of WO2022254341A1 publication Critical patent/WO2022254341A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
    • E04B1/994—Acoustical surfaces with adjustment mechanisms

Definitions

  • This description concerns an acoustic control system for noise control and/or attenuation thereof.
  • Said system is used in the wall or ceiling textile acoustic control panel industry. More specifically, it concerns a module that allows the creation of an acoustic shell that allows the reduction of the intensity of sound reflection and absorption of sound in an indoor environment.
  • the present description also concerns a panel, an assembly process for the acoustic system and a manufacturing process for said module.
  • acoustic panels are built with different shapes, materials and finishes. These acoustic panels have rigid shapes, with or without mechanisms, modular or not. Textile coated acoustic panels are a way to maximize acoustic absorption. Textile mesh can be wrapped around the part to create what is called a "pre-made panel". These prefabricated panels are limited to a decorative three-dimensional appearance and a predetermined size. It is understood that most of the acoustic panels commercially available on the market have rigid modular forms, both in terms of aesthetics, reflection and sound absorption, without the possibility of adjusting according to changes in real-time sound stimuli.
  • Document US3590354 refers to an acoustic control system, characterized by pairs of rotating drums for sound control inserted inside the ceiling.
  • the system includes a motor that triggers the recoil of the drums which, in turn, are connected to sound control elements to move the elements uniformly and simultaneously in opposite directions of rotation on parallel or coincident rotational axes.
  • the system also includes a detection device or sound sensor that responds to variations in sound to move the drums into an ideal position.
  • this system having rotational dynamism and already presenting itself as an autonomous acoustic system controlled by sensors, it does not envisage the use of tensioned textile material for acoustic control.
  • acoustic control system with rotational activity of triangular prisms is referred to in document US6431312, published on 13-08-2002.
  • said acoustic treatment system is motorized and controlled by computer; employs mechanical actuators, such as gears and sprockets, to mechanically control each individual unit.
  • the engine electric moves the different faces of each unit to the three possible positions (absorptive, reflective or diffusive) facing the interior of the listening room.
  • This rotation of the units is programmed or programmable to coordinate the activity of the different faces, allowing the operator to adjust the acoustics of the listening room efficiently, centrally and quickly.
  • it does not provide for these three-dimensional morphological responses.
  • Document WO2013/134340A1 published on 12-09-2013, refers to a dynamic responsive acoustic tuning envelope system, assembled according to the principles of rigid origami. It includes a set of triangular cells movably connected via actuators, each with reflective, sound absorbing and/or electro-acoustic properties. The system is capable of creating localized surface deformations, transforming its textural profile and changing its volume, harmonizing the acoustics of the interior environment.
  • Document US9322165 refers to a passive but dynamic acoustic panel, comprising a front tile (periodic and non-periodic), arranged in a series of rows belonging to the acoustic panel where the Reflection surface comprises a tiled matrix (triangle, square or hexagonal). Each row of tiles is assembled around the central axis, so it is possible to vary the angle of inclination of the row of tiles in order to vary the reflection and absorption characteristics.
  • a microphone mounted behind the housing it is possible to control the lathe axis and subsequently vary the levels between maximum reflection and maximum absorption based on the desired acoustic properties of a space.
  • the present description refers to an acoustic control system, in which through the frequent repetition arrangement of geometric modules provided in their cores with a mesh coating, preferably textile, more preferably a flexible elastic coating, by means of an internal mechanism of autonomous deformation (responsive and dynamic shuttle) tensions the said mesh towards the inside and outside promoting the creation of an autonomous acoustic control surface.
  • the assembly/coupling of the modules together generates a base structure - chassis, which is fixed to flat surfaces, preferably smooth surfaces, by means of connectors with the aid of a tightening tool.
  • the geometry of the formed structure allows for easy assembly and/or disassembly of the system, so that it is portable and easy to maintain.
  • the module comprises a core and a mechanical piston connected to a microphone; which, in turn, is associated with an actuator, an electric motor, a mechanism that provides back and forth movement to the acoustic shell, preferably, the shell is formed by the flexible coating and the rod.
  • This movement causes a mutation in the shell (positive or extended, negative or retracted; neutral or intermediate) which promotes a decrease in the intensity of reflection and sound absorption (automatic control of the system).
  • said core further comprises a mechanical piston provided with a surface, preferably hexagonal, for adding the textile coating.
  • the acoustic system here revealed, presents itself as a viable and competitive alternative, compared to existing acoustic solutions, providing different acoustic solutions in real-time.
  • a second embodiment of the invention refers to the assembly process of the acoustic system.
  • the present description refers to a prismatic module for adjustable acoustic control, said module comprising: a hollow prismatic support; an elastic flexible liner where the liner is tensioned on a top face of the prismatic support; a rod arranged in the hollow of the prismatic support and movable between an extended position, an intermediate position and a retracted position; wherein the rod is coupled to the liner wherein: when the rod is in the extended position, the liner has a tapering shape towards the outside of the structure; and/or when the rod is in the retracted position, the liner has a tapering shape towards the inside of the frame; and/or when the rod is in the intermediate position, the coating has a planar shape.
  • the module comprises an actuator for moving the rod.
  • the module comprises an electronic data processor for actuating the actuator to move the rod.
  • the processor is configured to actuate the actuator to move the rod depending on the frequency of the sound to be acoustically controlled.
  • the flexible elastic coating is a textile or polymeric coating.
  • the coating is a mesh or film.
  • the mesh is selected from among polyester, polyamide, polyurethane, wool or combinations thereof.
  • the film is selected from among gum, rubber, silicone, or combinations thereof.
  • the prismatic support is hexagonal, triangular or quadrangular. [0022] In one embodiment, the prismatic support is hexagonal.
  • the module comprises a microphone on the top face of the prismatic support.
  • the present description further relates to an acoustic panel for acoustic control comprising a plurality of prismatic modules according to any one of the preceding claims.
  • the acoustic panel for acoustic control according to the preceding claim, wherein the modules of the plurality of prismatic modules are joined side by side on the faces of the prisms to form a contiguous surface by the flexible coatings of said modules.
  • the present description further relates to a method of operating a prismatic module for adjustable acoustic control, wherein said module comprises: a hollow prismatic support; an elastic flexible liner where the liner is tensioned on a top face of the prismatic support; a rod arranged in the hollow of the prismatic support and movable between an extended position, an intermediate position and a retracted position; wherein the rod is coupled to the liner; wherein the method comprises a step of: moving the rod into an extended position, wherein the casing is tapered towards the outside of the frame; moving the rod to a retracted position, in which the liner has a tapered shape towards the interior of the structure; an actuator for moving the rod; move the rod to an intermediate position, in which the coating takes on a planar shape; an electronic data processor for actuating the actuator to move the rod; in which the processor actuates the actuator and the actuator moves the rod according to the frequency of the sound to be acoustically controlled.
  • the present description also concerns a method of manufacturing the prismatic module for adjustable acoustic control as described, which comprises the following steps: arranging a hollow prismatic support; arranging an elastic flexible liner wherein the liner is tensioned on a top face of the prismatic support; arranging a rod in the hollow of the prismatic support, the rod being movable between an extended position, an intermediate position and a retracted position; coupling the rod to the liner in such a way that: when the rod is in the extended position, the liner has a tapered shape towards the outside of the structure; when the rod is in the retracted position, the liner has a tapering shape towards the inside of the structure; when the rod is in the intermediate position, the coating has a planar shape.
  • Figure 1 illustrates a cross-section of the wall and floor panel, composed of a pattern of hexagonal modules.
  • Figure 2 illustrates a cross section of the ceiling and wall panel, composed of a pattern of hexagonal modules.
  • Figure 3 illustrates a diagram that exemplifies the mode of the control system through the use of a microphone to monitor the sound source noise level, in a controlled space environment, and the use of a motor to actuate and control the acoustic shell of the front surface of one or more modules to decrease the intensity of sound reflection and absorption.
  • Figure 4 illustrates a module with the core uncovered, not revealing the shell detail and keeping the surface in a neutral position.
  • Figure 5 illustrates an exploded perspective view of the module assembly, as well as its core, from the electric motor box and the PC, to the microphone assembly inside the toothed pin or rod.
  • Figure 6 illustrates a coating composition where the pistons made up of pins provide back and forth movements, which allow stretching the textile.
  • these pins comprise buttons/hooks on the outer face of the polyester mesh.
  • Figure 7 illustrates the assembly of two modules, but without showing the front acoustic lining.
  • the core of the module as well as the toothed pin that provides the reciprocating movement and creates the acoustic shell.
  • the present description refers to a prismatic module for adjustable acoustic control, said module comprising: a hollow prismatic support; an elastic flexible liner where the liner is tensioned on a top face of the prismatic support; a rod arranged in the hollow of the prismatic support and movable between an extended position, an intermediate position and a retracted position; wherein the rod is coupled to the liner wherein: when the rod is in the extended position, the liner has a tapering shape towards the outside of the structure; and/or when the rod is in the retracted position, the liner has a tapering shape towards the inside of the structure; and/or when the rod is in the intermediate position, the coating has a planar shape.
  • the present description refers to an acoustic control system for indoor environments, in which, through the frequent repetition of geometric modules coupled longitudinally and transversally, provided in their cores with a mesh coating that, due to an internal mechanism, in autonomous deformation (responsive and dynamic shuttle), tensions the said mesh towards the inside and outside, promoting the creation of an acoustic control surface.
  • This description refers to an acoustic control system, in which modules provided in their cores with a flexible coating and arranged in frequent repetition, deform autonomously, three-dimensionally, dynamically and smoothly, according to the acoustic properties system cladding for interior and exterior. Said deformation promotes the creation of an autonomous acoustic control surface, which promotes an aesthetic alteration of the environment which, depending on the intensity of the sound/noise, modifies the visual configuration of the environment.
  • the acoustic system hereby revealed, presents itself as a viable and competitive alternative, compared to existing acoustic solutions, providing different acoustic solutions in real-time.
  • a second embodiment of the invention refers to the assembly process of the acoustic system.
  • the acoustic control system is capable of undergoing changes in its visual configuration in response to sound stimuli, in order to create volumes that allow a differentiation of the perception of the sound state and consequently interfere with the semantic reading from space.
  • the assembly/coupling of the modules together generates a base structure - chassis, which is attached to smooth, curved or faceted surfaces, such as walls or ceilings, by means of connectors with the aid of a tightening tool.
  • the preferred geometric shape of the modules is the hexagonal prism shape, any other geometric shape that allows easy assembly and/or disassembly may be used, such as triangular or square.
  • the modules must have balanced size and weight, in order to provide that the system is portable, easy to assemble and easy to maintain.
  • the core lining mesh preferably in polyester when tensioned, promotes the mutation of the three-dimensional shell with a hexagonal periodic surface, in a positive or extended, negative or collected or neutral or intermediate tension, to reduce the intensity of reflection and absorption of the sound and thus promoting a change in the visual configuration of the system, which contributes to the aesthetic character that the acoustic control system offers.
  • said core also has a mechanical piston provided with a hexagonal surface for adding the textile coating.
  • the acoustic control system comprises a non-structural modular structure, that is, it does not comprise the creation of self-supporting acoustic partitions. That is, in principle, it must always be allocated to a physical structure such as a wall, ceiling, or column.
  • the referred system is preferably used indoors and assumes that the fastening system should be applied in places where the elements, wall and floor (4) or wall and ceiling (3), located at their border will be of rigid typology, such as, for example, masonry, concrete, metal or wood, that is, which are presented as non-deformable and allow a good fixation of the system elements and sufficient resistance to give rigidity to the structure created by the chassis.
  • rigid typology such as, for example, masonry, concrete, metal or wood
  • the polyester mesh coating is attached to the module chassis through a front hexagonal rim that subdivides the total surface of the panel into small periodic frequent hexagonal surfaces, which in turn can be disassembled to allow access to the interior of the module. chassis.
  • the module comprises a core and a microphone connected to a mechanical piston, which in turn is associated with an actuator, an electric motor, a mechanism that provides reciprocating movement to the polyester mesh acoustic shell.
  • the acoustic system has access for maintenance through the outer and lateral faces. In this way, the assembly of the system is facilitated by the characteristics of the hexagonal geometric element and by the outer mesh of easy assembly, disassembly and washing.
  • the panel covering is preferably made of a flexible polymeric mesh, such as polyester
  • different materials may be used that provide acoustic insulation, such as other elastic textiles, for example, polyamide, polyurethane, among others.
  • films or films with elastic properties can also be used as a coating, for example, gums, rubber, silicone, among others.
  • other materials that do not have elastic properties, but which, when associated with other materials that have these characteristics, can also be used, such as wool.
  • said coating can have different colors, such as the sublimation of graphic elements.
  • the acoustic system hereby revealed, presents itself as a viable and competitive alternative, compared to existing acoustic solutions, providing different acoustic solutions in real-time.
  • the acoustic control system is capable of detecting sounds/noises with frequencies between 20 Hz and 20 kHz, and the volume that varies on a human scale between the threshold of hearing 0 dB and maximum audible volume before causing pain 140 dB.
  • Figure 1 and Figure 2 show an acoustic control panel, built through frequent repetition of the module (1), which has a hexagonal prism configuration, as shown in Figure 4. This repetition when joining builds the acoustic structure longitudinally and transversely, as shown in Figure 7.
  • a microphone (12) By mounting a microphone (12) on the rod, at the top of the coating fitting (19), it is possible to autonomously control the shuttle mechanism and subsequently vary in real-time the levels of reflection and sound absorption, based on the hardware programming, for example an electrician, to control the desired acoustic properties (reflection, diffraction or absorption) in an interior space, as shown in the diagram in Figure 3.
  • each module (1) consists of a hexagonal front face where the textile covering (7) is adhered, the shuttle mechanism is mounted inside the core (2) of the chassis (5), being in this chassis ( 5) which the modules (1) meet and join together.
  • a front hexagonal ring (8) is manufactured which, in turn, supports the mesh of the textile covering (7).
  • a rear frame (9) and a rear plate (24) are added to connect the module (1) to a flat surface (ceiling or wall), giving rigidity to the structure. Fixation to the surface occurs mechanically with the aid of connectors (26) and mobile means of fixation (25), such as pins, clips or buttons, in order to allow assembly and disassembly of the module (1) using tools for tightening.
  • the textile acoustic surface assumes three-dimensional configurations, shell in a positive or extended position (21), negative or retracted (22) or neutral or intermediate (23), which can be minimized or accentuated, depending on dimensional, aesthetic and acoustic needs, as shown in Figure 6.
  • the module (1) consists of a core (2) that houses a hardware box formed by two parts (13 and 14), inside the box there is an electrician board Uno Rev3 (11) and a v5 electric motor (15).
  • the PC (11) connects via a USB connection (20) to an energy and data source (electrical current transformer and/or a computer), while the motor (15) moves the toothed pin or rod (16) of the mechanical piston (6) through two toothed wheels, a first wheel connected to the electric motor (17) and a second wheel (18), which supports the toothed pin (16).
  • the microphone cable (12) that makes the bridge between the data collected on the front surface of the module (1) and the PC (11) inside the core (2 ).
  • the microphone (12) is attached by mechanical means (pressure) inside the button (19), to which the polyester mesh coating (7) is attached.
  • the front cover (7) is mounted through the front frame (8).
  • the rear frame (9) and the rear plate (24) are a single piece that makes it possible to attach the chassis (5) to a flat surface (wall or ceiling).
  • the real-time acoustic control system can be provided with geometric modules coupled longitudinally and transversely, in which each module (1) comprises:
  • a core (2) housing a hardware box (10) made up of two parts (13 and 14) which has an electrician board (11) and an electric motor (15) inside;
  • a front hexagonal rim (8) to support the lining mesh (7).
  • a rear rim (9) and a rear plate (24) can be added to the system to connect the module (1) to a flat, smooth, curved or faceted surface by means of connectors and a tightening tool .
  • the microphone (12) can autonomously control the shuttle mechanism and subsequently vary in real-time the levels of reflection and absorption of sound.
  • fastening to the surface can occur mechanically with the aid of connectors (26) and mobile fastening means (25), such as pins, clips or buttons through tightening tools.
  • the textile acoustic surface can assume three-dimensional configurations, shell in a positive (21), negative (22) or neutral (23) position, according to the noise level.
  • the PC (11) can connect via a USB connection (20) to a power and data source and the motor (15) move a toothed pin (16) of the mechanical piston (6) through two toothed wheels, of which a first wheel is connected to the electric motor (17) and a second wheel which supports the toothed pin (18).
  • the microphone cable (12) can pass, which is mechanically attached inside the button (19).
  • the shape of the module (1) can be a hexagonal, triangular, square prism or any other shape that allows easy assembly/disassembly.
  • the system can preferably be used indoors and be applied to floors, walls and ceilings, selected from masonry, concrete, metal or wood materials.
  • access for maintenance can occur through the outer faces and sides.
  • the coating (7) can be made of a flexible polymeric mesh, such as polyester or any other material that provides acoustic insulation, such as other elastic textiles such as polyamide, polyurethane, among others, films or films with elastic properties such as gums, rubber, silicone, among others and/or other materials that do not have elastic properties, such as wool, but which, when associated with other materials that have these characteristics, can also be used.
  • a flexible polymeric mesh such as polyester or any other material that provides acoustic insulation
  • other elastic textiles such as polyamide, polyurethane, among others, films or films with elastic properties such as gums, rubber, silicone, among others and/or other materials that do not have elastic properties, such as wool, but which, when associated with other materials that have these characteristics, can also be used.
  • said coating (7) can have different colors, as well as the sublimation of graphic elements.
  • the system can detect sounds/noises with frequencies between 20 Hz and 20 kHz. In one embodiment, for a value equal to or less than 55db the rod is in the neutral position and for higher values the rod will accentuate the shape, progressively, up to 110 db which corresponds to the maximum deformation.
  • this process comprises:

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)

Abstract

La présente invention concerne un module prismatique pour contrôle acoustique réglable, ledit module comprenant : un support prismatique creux; un revêtement souple élastique, ce revêtement étant disposé de manière tendue sur une face de partie supérieure du support prismatique; une tige disposée dans le creux du support prismatique et pouvant se déplacer entre une position déployée, une position intermédiaire et une position rétractée; la tige étant accouplée au revêtement. Lorsque la tige est en position déployée, le revêtement présente une forme diminuant vers l'extérieur de la structure; lorsque la tige est en position rétractée, le revêtement présente une forme diminuant vers l'intérieur de la structure; lorsque la tige est en position intermédiaire, le revêtement présente une forme plane. La présente invention concerne également un procédé de fabrication et un procédé de fonctionnement dudit module.
PCT/IB2022/055093 2021-05-31 2022-05-31 Module prismatique pour contrôle acoustique réglable, panneau, procédé de fonctionnement et procédé de fabrication respectif WO2022254341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT117264 2021-05-31
PT11726421 2021-05-31

Publications (1)

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WO2022254341A1 true WO2022254341A1 (fr) 2022-12-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590354A (en) * 1969-05-01 1971-06-29 Foey M Shiflet Control system for synchronously controlling the opposed rotation of elements about coincident or parallel axes
US6431312B1 (en) * 2000-08-15 2002-08-13 Rpg Diffusor Systems, Inc. Motorized and computer operated variable acoustics treatment
US20160024783A1 (en) * 2014-07-25 2016-01-28 Erik J. Luhtala Dynamically adjustable acoustic panel device, system and method
KR102082982B1 (ko) * 2019-08-13 2020-02-28 주식회사 모던탑 무대 음향 제어 기능을 구비한 스크린 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590354A (en) * 1969-05-01 1971-06-29 Foey M Shiflet Control system for synchronously controlling the opposed rotation of elements about coincident or parallel axes
US6431312B1 (en) * 2000-08-15 2002-08-13 Rpg Diffusor Systems, Inc. Motorized and computer operated variable acoustics treatment
US20160024783A1 (en) * 2014-07-25 2016-01-28 Erik J. Luhtala Dynamically adjustable acoustic panel device, system and method
KR102082982B1 (ko) * 2019-08-13 2020-02-28 주식회사 모던탑 무대 음향 제어 기능을 구비한 스크린 장치

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