ACOUSTIC CEILING SYSTEM THAT AUTOMATICALLY BALANCES CLASSROOM NOISE.

Abstract

The invention relates to an acoustic ceiling system used in enclosed spaces, primarily educational institutions, that detects ambient noise in real time and dynamically modifies its acoustic properties.

Description

1 TARIFF ACOUSTIC CEILING SYSTEM THAT AUTOMATICALLY BALANCES CLASSROOM NOISE. Technical Area 5 The invention is an acoustic ceiling used in enclosed spaces, particularly in educational institutions. It is related to the system. Specifically, the invention detects ambient noise in real time and determines its acoustic properties. It is related to an acoustic ceiling system that dynamically changes its appearance. State of the Art In the current technical field, acoustic control used in classrooms, offices and similar enclosed spaces is 15. The solutions largely consist of passive acoustic panels. These panels are generally perforated metal surfaces, mineral wool fillings, open-cell polyurethane foams, or They are produced in the form of microperforated composite sheets. These structures... Their common feature is that their acoustic absorption coefficients are constant and vary according to ambient conditions. The panel's porosity, density, and surface area should not vary. Its specifications are determined during production and cannot be changed during use. Therefore, passive panels are only effective within specific frequency ranges, such as in a classroom setting. It cannot provide optimum performance in environments with dynamic noise profiles. In current practices, in classroom settings, changes in the number of students and the type of course are 25. such as changes in door / window status or sudden increases in noise. Since the acoustic behavior of the panel remains constant in the face of the variables, insufficient absorption occurs. In this situation, the echo time increases and the intelligibility of the teacher's voice decreases, and If there is excessive absorption, the environment enters a "dead room" effect, and the sound loses its natural quality. The spread is disrupted, speech clarity decreases, and the teacher speaks louder. 30 He is forced to speak. In addition, today's passive panels are equipped with sensors to detect ambient noise, or Because it does not have any active component to adjust acoustic transmission, It is unable to perform real-time acoustic optimization and adapt to variable volume conditions. 35 It is unable to adapt. These technical limitations are particularly undesirable in educational settings. 2 ensuring speech intelligibility, low reverberation time, and balanced acoustic comfort. This complicates and the dynamic, feedback and adaptive acoustic control of existing systems This shows that it cannot meet its needs. In conclusion, the existence of the above problems and the inadequacy of current solutions are relevant to the 5 This has made it necessary to make improvements in the technical field. Purpose of the Invention The present invention eliminates the aforementioned disadvantages and contributes to the relevant technical field in 10 years. with an acoustic ceiling system that automatically balances classroom noise, bringing new advantages. It is related. The main purpose of the invention is to improve the environment in enclosed spaces, especially in educational institutions. It detects noise in real time and dynamically analyzes its acoustic properties. 15 The goal is to create an acoustic ceiling system that will change the acoustics. The purpose of the invention is to use sensors to detect the instantaneous noise level and frequency distribution of the environment. an acoustic system that automatically adjusts acoustic absorption behavior by measuring it through a sensor. The goal is to establish a ceiling system. 20 Another aim of the invention is to determine the targeted acoustics by calculating the reverberation time in the classroom. optimizing panel permeability or vibration characteristics to achieve comfort. The goal is to create an acoustic ceiling system. Another aim of the invention is to use piezoelectric micro-actuators on the panel surface. by generating controlled micro-vibrations and thus dynamically increasing the sound absorption coefficient. The goal is to create an acoustic ceiling system that will change the overall acoustics. Another objective of the invention is to create an electroactive polymer-based variable porosity membrane 30 An acoustic system that electrically adjusts the acoustic transmittance of the panel thanks to its structure. The goal is to establish a ceiling system. Another purpose of the invention is to adapt to class size, lesson type, and instantaneous noise level changes. This results in an acoustic ceiling system that continuously optimizes acoustic performance. 35 to place. 3 Another aim of the invention is to provide sensor feedback, unlike passive acoustic panels. an acoustic ceiling system that offers an active acoustic control mechanism. to place. Another aim of the invention is to communicate with school automation systems to monitor energy consumption, 5 An acoustic ceiling system was developed that transmits noise data and operating modes to management. to place. To fulfill all the purposes mentioned above and those that can be derived from the detailed explanation. The invention is designed for use in enclosed spaces, primarily educational institutions, and the environment is 10°C. by detecting its noise in real time and dynamically analyzing its acoustic properties. It is an acoustic ceiling system that changes the sound. - a device attached to the classroom ceiling in an educational institution that detects ambient noise, acoustic ceiling module that adjusts acoustic permeability, - located on the underside of the acoustic ceiling module and the instantaneous noise level of the environment 15 Noise detection that measures level, frequency spectrum, and echo time. sensor array, - located within the acoustic ceiling module and via piezo micro-actuators By creating micro-vibrations, the amount of sound wave absorption is dynamically adjusted. Vibration panel with micro-actuator that changes the shape, 20 - located within the acoustic ceiling module and electrically controlled through its pore opening. modified electroactive polymer-based variable porosity membrane by means of adjusting the acoustic permeability of the acoustic ceiling module to ambient conditions. Variable porous membrane panel that adjusts according to the situation, - analyzes data from the noise detection sensor array and measures the echo time as 25 by calculating the acoustic ceiling module behavior (vibration frequency or This is related to the fact that it includes a control unit that adjusts the pore opening. The structural and characteristic features and all the advantages of the invention are given in the figures below. And thanks to the detailed explanation written with references to these figures, it becomes clearer. 30 This will be understood as such. Therefore, the evaluation should also include these forms and detailed explanations. This should be done taking that into consideration. Figures that will help understand the invention. 35 Figure 1: Representative view of the acoustic ceiling system that is the subject of the invention. 4 Figure 2a: Micro-actuator vibration panel of the acoustic ceiling system that is the subject of the invention. This is a representative view of the disassembled state. Figure 2b: Micro-actuator vibration panel of the acoustic ceiling system that is the subject of the invention. This is a cross-sectional representation. Figure 3a: Variable pore membrane 5 of the acoustic ceiling system that is the subject of the invention. This is a view of the panel in its disassembled state. Figure 3b: Variable pore membrane of the acoustic ceiling system that is the subject of the invention. This is a cross-sectional view of the panel. Explanation of Part References 10 10. Acoustic ceiling module 20. Noise detection sensor array 30. Micro-actuator vibration panel 31. Load-bearing structure 15 32. Aluminum vibration panel 33. Piezo micro-actuator 34. Acoustic absorber substrate 40. Variable porosity membrane panel 41. Upper perforation layer 20 42. Variable porosity membrane 43. Electrode layer 44. Acoustic absorber substrate 50. Control unit 60. Communication module 25 Detailed Description of the Invention This detailed description explains the preferred acoustic ceiling system that is the subject of the invention. alternatives, solely for the purpose of better understanding the subject and without any limitations. 30 It is explained in a way that will not create an impact. Figure 1 shows the general view of the acoustic ceiling system that is the subject of the invention. Accordingly, In its most basic form, an acoustic ceiling system is connected to the classroom ceiling in an educational institution. and acoustic ceiling module 35 that detects ambient noise and adjusts acoustic permeability. (10), located on the lower surface of the acoustic ceiling module (10) and the instantaneous noise of the environment Noise detection sensor array that measures noise level, frequency spectrum, and echo time. (20), through piezo micro-actuators (33) inside the acoustic ceiling module (10). By creating micro-vibrations, the amount of sound wave absorption is dynamically controlled. Vibration panel with micro-actuator changing (30), inside acoustic ceiling module (10) Variable 5 based on electroactive polymer with electrically altered pore opening. acoustic ceiling module (10) by means of porous membrane (42) Variable pore membrane panel that adjusts its permeability according to ambient conditions. (40) analyzes data from the noise detection sensor array (20) and echo by calculating the duration, the behavior of the acoustic ceiling module (10) (vibration frequency or Control unit (50) that adjusts the pore opening), school automation with control unit (50) 10 It includes a communication module (60) that enables data exchange between the systems. The acoustic ceiling module constitutes the main structure of the acoustic ceiling system that is the subject of this invention. (10) is connected to the classroom ceiling in the educational institution and detects ambient noise. It adjusts the acoustic permeability. The acoustic ceiling module in question (10) adjusts the ambient 15 To detect noise, it has the instantaneous noise level and frequency of the environment printed on its bottom surface. A noise detection sensor array (20) measuring the spectrum and echo time is installed. This noise detection sensor array (20) consists of multiple microphones or acoustic sensors. It is a sequence formed. It records the instantaneous noise level of the environment, the frequency spectrum, and the echo time. by measuring and transmitting the data it obtains to the control unit (40) acoustic optimization 20 It initiates the process. The acoustic ceiling module (10) detects ambient noise and improves acoustic permeability. To enable its adjustment, it includes a micro-actuator vibration panel (30) and A variable pore membrane panel (40) was installed. 25 Micro-actuator vibration panel (30) acoustic ceiling as shown in figures 2a and 2b. The module (10) has a multi-layered structure embedded within it, and the environment Piezo micro-actuators to provide dynamic damping of noise. (33) produces controlled micro-vibrations on the panel surface. The aforementioned 30 Micro-actuator vibration panel (30) is mainly made of metal or composite profiles a load-bearing structure (31) formed, aluminum vibration located within the load-bearing structure (31) panel (32), piezo micro-actuators located on aluminum vibration panel (32) (33) and acoustic absorber located at the bottom of the micro-actuator vibration panel (30) It contains layer (34). 35 6 The carrier structure (31), aluminum vibration panel in the micro-actuator vibration panel (30) (32), piezo micro-actuators (33) and acoustic absorber substrate (34) that hold together and the main mechanical frame that enables the controlled transmission of vibrations It consists of an aluminum vibration panel (32) located within the carrier structure (31). Mechanical vibrations produced by piezo micro-actuators (33) are applied to a large surface area. It is a thin, high-modulus layer that allows for homogeneous spreading. Placed in direct contact with the aluminum vibration panel (32) piezo micro-actuators (33), electrical signals from the control unit (50) Micro-actuator vibration panel (30) operating at specific frequencies It produces micro-vibrations on its surface. These vibrations are generated by the micro-actuator vibration panel. (30) changes the acoustic behavior in real time and ambient noise It provides dynamic absorption depending on the frequency content. The acoustic absorber bottom located at the bottom of the micro-actuator vibration panel (30) The layer (34) increases the air movement on the aluminum vibration panel (32) 15 It increases the absorption of sound energy by damping and micro-actuator vibration. It supports the broadband acoustic performance of the panel (30). Thus, the carrier structure (31), aluminum vibration panel (32), piezo micro-actuators (33) and acoustics The absorber substrate (34) works together with the micro-actuator vibration panel (30) It performs the function of dynamic acoustic control. 20 Another active acoustic control component located inside the acoustic ceiling module (10) The variable pore membrane panel (40), which is shown in figures 3a and 3b, The pore opening is electrically opened by means of an electroactive polymer-based membrane (42). It controls acoustic transmission by changing the variable in question to 25. The porous membrane panel (40) basically allows sound waves to reach the membrane. providing the upper perforation layer (41), located under the upper perforation layer (41) and variable pore membrane with pore opening changed by electrical stimulation (42), electrode that enables electrical stimulation of the variable pore membrane (42) layer (43) and 30 located at the bottom of the variable pore membrane panel (40) It contains an acoustic absorbing substrate (44). The upper perforation layer (41) covers the outer surface of the variable pore membrane panel (40). and directing sound waves to the variable porous membrane (42) It is a perforated structure that provides both mechanical protection. The upper perforation layer (41) provides both mechanical protection. 35 7 It also provides variable porous sound thanks to its perforation geometry. This allows the membrane (42) to reach the surface homogeneously. Variable porous membrane (42) located under the upper perforation layer (41), It is a flexible sheet based on electroactive polymer (EAP). 5 from the control unit (50) micro on the surface of variable porous membrane (42) in line with electrical stimulus The pores either contract or expand. Thus, it is a variable pore membrane. The acoustic transmittance of the panel (40) is real according to the frequency content of the ambient noise. It is adjusted in a timed manner. Variable porous membrane (42), acoustic ceiling This is the characteristic element of the module (10) that provides active acoustic control. 10 The electrode is in direct contact with the variable pore membrane (42). a thin film layer (43) coated on the bottom surface of the variable pore membrane (42) It is a conductive layer. The electrode layer in question (43) receives from the control unit (50). transmitting the electrical signal to the variable pore membrane (42) pore 15 It enables the deformation to occur. The electrode layer (43) is variable. to ensure an even electrical distribution on the entire surface of the porous membrane (42) It has been designed. Acoustic absorber 20 located at the bottom of the variable pore membrane panel (40) The substrate (44) allows air flow through the variable porous membrane (42). It increases the absorption of sound energy by damping it. Variable porosity. air changed by narrowing or widening of the pore opening in the membrane (42) optimizing the flow and wide band of the variable porous membrane panel (40) It supports acoustic performance. 25 Thanks to the structure of the variable pore membrane panel (40), the upper perforation layer (41), variable pore membrane (42), electrode layer (43) and acoustic absorber substrate layer (44) working together to form the acoustic variable porous membrane panel (40) Real-time adjustment of permeability and adaptive response to ambient noise 30 It is ensured that it is given. The control unit (50) analyzes the data from the noise detection sensor array (20). to calculate the reverberation time of the environment and the acoustic ceiling module (10) It determines its behavior. In addition, the said control unit (50) has a micro-actuator 35 8 Vibration frequency for vibration panel (30), variable pore membrane panel (40) It adjusts the pore opening for this purpose. The communication module (60) connected to the control unit (50) in the system subject to the invention bidirectional data transmission between the control unit (50) and the school automation system. Communication can be established. Information such as noise levels, energy consumption, and operating modes can be obtained. wireless connection to the control unit (50) via the communication module (60) It can be transmitted. When the system described in the invention starts working, the bottom 10 of the acoustic ceiling module (10) Noise detection sensor array (20) located on its surface, instantaneous noise in the classroom environment It continuously measures the noise level, frequency spectrum, and echo time. This data obtained by the sensing sensor array (20) is sent to the control unit (50) The signal is transmitted and the control unit (50) extracts the acoustic profile of the environment. The control unit (50) analyzes the data from the noise detection sensor array (20). By doing so, we calculate the current reverberation time of the environment and the targeted acoustic comfort. In which mode should the acoustic ceiling module (10) operate to reach the level? It determines that the ambient noise is required. In this context, the control unit (50) determines that the ambient noise is required. Micro-actuator vibration 20 depending on frequency content, intensity and rate of change acoustic panel (30) or variable pore membrane panel (40) It adjusts the permeability. In situations where the mid and high-frequency components of ambient noise are dominant The control unit (50) activates the micro-actuator vibration panel (30). This 25 In this case, piezo micro-actuators (33) receive electrical signals from the control unit (50). aluminum vibration panel (32) by working at specific frequencies in line with the signals It produces micro-vibrations on it. This is supported by the carrier structure (31). Vibrations are homogeneous over a wide area on the surface of the micro-actuator vibration panel (30). It spreads in this way and increases the amount of sound wave absorption in the medium 30 It provides dynamic damping of the noise. Micro-actuator vibration. The acoustic absorber substrate (34) located at the bottom of the panel (30) is formed by vibration. It supports broadband acoustic performance by damping air movement. Where low and mid-frequency components of ambient noise are dominant, or where there is echo 35 In cases where the duration is high, the control unit (50), variable pore membrane 9 It activates the panel (40). In this mode, the control unit (50) activates the electrode layer (43) electroactive polymer structure in variable porous membrane (42) It stimulates and causes the micropores on the membrane surface to narrow or It enables expansion. The pores in the variable pore membrane (42) Changing the opening increases the acoustic transmittance of the variable pore membrane panel (40) by 5 It directly influences and controls the amount of sound waves that pass through. perforation layer (41), allows sound waves to reach the membrane homogeneously while providing acoustics located at the bottom of the variable porous membrane panel (40). air passing through the absorber substrate (44), variable porous membrane (42) It increases the absorption of sound energy by dampening its flow. 10 In the invention, a micro-actuator vibrating panel (30) and a variable pore membrane panel are used. (40) thanks to working together, the acoustic ceiling module (10) reduces ambient noise It can react instantly to changes and continuously maintain classroom acoustic comfort. It optimizes the system. The system saves energy when the noise level is low. It can switch to passive mode to save energy; and it automatically switches when the noise increases. It switches to active acoustic control mode. The communication module (60) connected to the control unit (50) transmits the operating data of the system. Noise levels and energy consumption can be monitored wirelessly through the school automation system. It transmits information and provides the possibility of remote monitoring and management when needed. Thus acoustic ceiling system provides both real-time acoustic optimization and building acoustics. High-level acoustics in educational environments by enabling automation integration. It creates comfort and increases learning efficiency. The invention is based on a scenario where ambient noise is low or the classroom is sparsely populated. in these situations, in order to prevent excessive acoustic absorption from occurring. It switches to passive mode and the micro-actuator vibration panel (30) with variable porosity This minimizes the absorption effect of the membrane panel (40). In this way, Speech distortion, frequently observed in fixed acoustic panels, due to excessive ambient air absorption. 30 The "dead room effect," which disrupts the natural propagation of sound, is prevented. Control Unit (50) analyzes the data from the sensor array (20) and determines the environment's needs. This prevents excessive attenuation, thus improving both echo time and speech. The intelligibility is kept within a balanced range. This feedback control structure Thanks to this, the system provides dynamic absorption at high noise levels, 35 by reducing echo and preventing excessive absorption at low noise levels It preserves the natural acoustic feel.

Claims

11 REQUESTS 1. Used in enclosed spaces, especially educational institutions, and the environment It detects noise in real time and dynamically analyzes its acoustic properties. It is an acoustic ceiling system that changes the ceiling in 5 ways; its feature is: 5 - attached to the classroom ceiling in an educational institution and reduces ambient noise. acoustic ceiling module (10) that detects and adjusts acoustic permeability. - located on the lower surface of the acoustic ceiling module (10) and the instantaneous environment noise measuring level, frequency spectrum, and echo time sensing sensor array (20), 10 - piezo micro-actuators located inside the acoustic ceiling module (10) Absorption of sound waves by creating micro-vibrations through (33) Vibration panel with micro-actuator that dynamically changes the intensity. (30), - located inside the acoustic ceiling module (10) and with a pore opening of 15 electrically modified electroactive polymer-based variable acoustic ceiling module (10) by means of porous membrane (42) a variable that adjusts acoustic transmission according to ambient conditions porous membrane panel (40), - analyzes data from the noise detection sensor array (20) and 20 Calculating the reverberation time and the behavior of the acoustic ceiling module (10) Control unit (50) that adjusts (vibration frequency or pore opening) It includes.

2. An acoustic ceiling system conforming to Claim 1, whose feature is; the aforementioned control 25 connected with unit (50) and control unit (50) school automation system It includes a communication module (60) that enables data exchange between them.

3. An acoustic ceiling system conforming to Claim 1, whose feature is; the aforementioned micro- 30 actuator vibrating panel (30), consisting of metal or composite profiles The load-bearing structure (31), located within the load-bearing structure (31) and mechanical vibrations aluminum vibration panel (32) which enables the spread of the surface, aluminum located on the vibration panel (32) and coming from the control unit (50) Micro- piezo 35 that produces micro-vibrations on the surface of the actuator vibration panel (30) It contains a micro-actuator (33). 12 4. An acoustic ceiling system conforming to Claim 3, whose feature is; the aforementioned micro- actuator vibration panel (30) located at the bottom and aluminum vibration by damping the air movement on the panel (32) sound energy It contains an acoustic absorbing substrate (34) which increases its absorption.

5. An acoustic ceiling system conforming to Claim 1, whose characteristic is the aforementioned variable. porous membrane panel (40), variable porous membrane panel (40) The upper perforation layer (41) which forms the outer surface of the perforated structure, located under the perforation layer (41) and the pore opening electrically stimulates Variable porous membrane replaced with (42), variable porous 10 a thin film conductive layer coated on the bottom surface of the membrane (42) and the electrical signal from the control unit (50), variable pore by transmitting to the membrane (42) the variable pore membrane (42) electrically It contains an electrode layer (43) that enables its stimulation.

6. An acoustic ceiling system that complies with claim 5, and whose feature is the aforementioned variable. located at the bottom of the porous membrane panel (40) and variable by damping the airflow passing through the porous membrane (42) sound It contains an acoustic absorbing substrate (44) which increases the absorption of its energy.

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