Active composite energy-saving vertical acoustic barrier

Abstract

The utility model discloses an active type composite energy -conserving vertical sound type barrier, including composite screen body, the flexible photovoltaic board of laying in the outside surface of composite screen body, at least one sound intensity sensor, the impulse ultrasonic generator for generating and emitting ultrasonic wave of eliminating noise, power supply circuit and control unit. The utility model takes ultrasonic generator active mode and carries out the noise reduction, satisfies the requirement of sensitive area noise value, integrates the flexible photovoltaic board on the surface of composite screen body, utilizes solar energy and has realized the energy self -sufficiency of system, the composite screen body of upper portion inwardly inclined will most traffic noise reflect back road area, improves the noise reduction effect and can make flexible photovoltaic board maximum receive solar radiation, provides more electric energy, the intensity and frequency spectrum of two sound intensity sensor noise value, adjusts the emission angle and frequency of impulse ultrasonic generator and other working parameters, realizes more accurate, efficient directional noise elimination.

Description

Technical Field

[0001] This utility model belongs to the technical field of noise control, specifically relating to an active composite energy-saving upright sound barrier. Background Technology

[0002] A sound barrier is an acoustic barrier specifically designed to be placed between a noise source and a receiver, significantly attenuating sound wave propagation and thus reducing the noise impact within a certain area where the receiver is located. Sound barriers are mainly classified according to their application location as traffic noise barriers, equipment noise reduction barriers, and industrial plant boundary noise barriers.

[0003] Currently, sound barriers are mainly divided into reflective types that provide pure sound insulation and composite types that combine sound absorption and sound insulation. Existing sound barriers primarily reduce sound pressure levels through sound insulation structures, sound-absorbing panels, and sound-absorbing materials. However, when noise levels are high, traditional sound barriers can only improve noise reduction by replacing materials with high-absorption materials and increasing the barrier thickness. This leads to a significant increase in cost and a reduction in the stability and safety of the sound barrier. Therefore, in harsh noise environments, the passive noise reduction method of simply increasing the thickness of traditional sound barriers is not ideal.

[0004] The patent application "Sound Insulation Method, Device, and Equipment for Integrated Photovoltaic Sound Barrier" (Patent No. ZL202410296911.7) proposes an active vibration reduction component that actively reduces noise by generating mechanical vibrations to cancel out noise, rather than using an ultrasonic generator. The pulsed ultrasonic anechoic system is the core technology for active noise reduction in this application, and its working principle is the cancellation of sound wave interference. The system collects information such as the frequency, phase, and amplitude of external noise in real time through sensors. A control unit (usually based on a DSP digital signal processor) quickly calculates and generates a sound wave signal (anti-noise signal) with the same amplitude but opposite phase as the original noise. The pulsed ultrasonic generator (as a secondary sound source) emits this anti-noise signal. The two sound waves superimpose in space, thereby canceling out the noise energy in a specific area (such as the sensitive area on the other side of the sound barrier), achieving the purpose of noise reduction. Utility Model Content

[0005] To ensure the stability and safety of the sound barrier, without increasing its thickness, an active ultrasonic generator is used for noise reduction on the basis of traditional sound barriers to meet the noise level requirements of sensitive areas. At the same time, photovoltaic technology is integrated to supply the electricity generated by the photovoltaic system to the ultrasonic silencing system, sensors, control units and supporting street lights, etc. It is an innovative technology that integrates green energy, intelligent sensing and advanced acoustic control.

[0006] The technical solution of this utility model is achieved as follows: an active composite energy-saving upright sound barrier, comprising:

[0007] Composite screen (1);

[0008] Flexible photovoltaic panels (2) are laid on the outer surface of the composite screen (1) to convert light energy into electrical energy;

[0009] At least one sound intensity sensor (3) is installed on the outside of the composite screen (1) for real-time monitoring of external environmental noise and generating noise intensity signals;

[0010] A pulsed ultrasonic generator (4) is installed on the composite screen (1) to generate and emit ultrasonic waves that eliminate noise.

[0011] The power supply line connects the flexible photovoltaic panel (2), the sound intensity sensor (3) and the pulse ultrasound generator (4) to distribute the electrical energy generated by the flexible photovoltaic panel (2) to the sound intensity sensor (3) and the pulse ultrasound generator (4).

[0012] The control unit has its signal input terminal connected to the sound intensity sensor (3) and its control output terminal connected to the pulse ultrasound generator (4); the control unit is configured to receive the noise intensity signal and send a start command to the pulse ultrasound generator (4) when its value exceeds a preset threshold.

[0013] Furthermore, the composite screen (1) is located on both sides of the road, and the upper part of the composite screen (1) is tilted inward, which can reflect most of the traffic noise back to the road area and significantly improve the noise reduction effect. In addition, tilting the upper part of the screen inward can make the flexible photovoltaic panel (2) attached to its surface obtain a near-optimal tilt angle, maximize the reception of solar radiation, and thus provide more power for the sound intensity sensor, ultrasonic generator and street light.

[0014] Furthermore, there are two sound intensity sensors (3), which are installed on the upper and lower parts of the outer side of the composite screen (1). By adjusting the intensity and spectrum of the noise values ​​of the two sound intensity sensors (3) on the upper and lower parts, the operating parameters such as the emission angle and frequency of the pulse ultrasonic generator (4) are adjusted to achieve more precise and efficient directional noise reduction, rather than indiscriminately emitting ultrasonic waves across the entire range.

[0015] Furthermore, it also includes a street lamp (5), which is connected to the flexible photovoltaic panel (2) through a power supply line and is powered by the flexible photovoltaic panel (2).

[0016] Furthermore, the control unit is integrated inside the sound intensity sensor (3) or the pulsed ultrasound generator (4).

[0017] Compared with existing technologies, the advantages of this invention are as follows: without increasing the thickness of the sound barrier, it adopts an active method of ultrasonic generator for noise reduction based on the traditional sound barrier, meeting the noise level requirements of sensitive areas; by integrating flexible photovoltaic panels onto the surface of the composite screen, solar energy is used to provide power for the sound intensity sensors and pulse ultrasonic generator, achieving energy self-sufficiency of the system; the composite screen, which tilts inward at the top, reflects most of the traffic noise back to the road area, improving the noise reduction effect while maximizing the absorption of solar radiation by the flexible photovoltaic panels, providing more power; by adjusting the operating parameters such as the emission angle and frequency of the pulse ultrasonic generator by analyzing the intensity and spectrum of the noise values ​​from the two sound intensity sensors at the top and bottom, more precise and efficient directional noise reduction is achieved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the barrier.

[0020] Figure 2 This is a flowchart of the noise reduction method. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] like Figure 1 The active composite energy-saving upright sound barrier shown includes:

[0023] Composite screen 1;

[0024] Flexible photovoltaic panel 2 is laid on the outer surface of the composite screen 1 to convert light energy into electrical energy;

[0025] At least one sound intensity sensor 3 is installed on the outside of the composite screen 1 to monitor external environmental noise in real time and generate a noise intensity signal;

[0026] A pulsed ultrasonic generator 4 is installed on the composite screen 1 and is used to generate and emit ultrasonic waves to eliminate noise.

[0027] A power supply line connects the flexible photovoltaic panel 2, the sound intensity sensor 3, and the pulse ultrasound generator 4, and is used to distribute the electrical energy generated by the flexible photovoltaic panel 2 to the sound intensity sensor 3 and the pulse ultrasound generator 4.

[0028] The control unit has its signal input terminal connected to the sound intensity sensor 3 and its control output terminal connected to the pulse ultrasound generator 4. The control unit is configured to receive the noise intensity signal and send a start command to the pulse ultrasound generator 4 when the value exceeds a preset threshold.

[0029] The composite screen 1 is installed on both sides of the road. The upper part of the composite screen 1 is tilted inward, which can reflect most of the traffic noise back to the road area and significantly improve the noise reduction effect. In addition, tilting the upper part of the screen inward can make the flexible photovoltaic panel 2 attached to its surface obtain a near-optimal tilt angle, maximize the reception of solar radiation, and thus provide more power for the sound intensity sensor, ultrasonic generator and street light.

[0030] The number of sound intensity sensors 3 is two, which are respectively installed on the upper and lower parts of the outer side of the composite screen 1. By adjusting the noise intensity and spectrum of the two sound intensity sensors 3, the operating parameters such as the emission angle and frequency of the pulse ultrasonic generator 4 are adjusted to achieve more precise and efficient directional noise reduction, rather than indiscriminately emitting ultrasonic waves across the entire range.

[0031] It also includes a street light 5, which is connected to the flexible photovoltaic panel 2 via a power supply line, and is powered by the flexible photovoltaic panel 2.

[0032] The control unit is integrated inside the sound intensity sensor 3 or the pulse ultrasound generator 4.

[0033] The noise control method for the barrier includes the following steps:

[0034] S1: The flexible photovoltaic panel 2 generates electricity and provides working power for the sound intensity sensor 3 and the pulse ultrasound generator 4;

[0035] S2: The ambient noise intensity outside the composite screen 1 is continuously monitored by the sound intensity sensor 3;

[0036] S3: Compare the monitored noise intensity value with the preset threshold;

[0037] S4: When the noise intensity value exceeds the preset threshold, the pulse ultrasound generator 4 is activated to emit ultrasonic waves for noise reduction.

[0038] S5: When the noise intensity value drops below the preset threshold, turn off the pulse ultrasound generator 4.

[0039] In step S4, the pulse ultrasound generator 4 is started with a preset delay.

[0040] The preset threshold is either a fixed value or a variable that is dynamically adjusted according to changes in the environment over time.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An active composite energy-saving upright sound barrier, characterized in that, include: Composite screen (1); Flexible photovoltaic panels (2) are laid on the outer surface of the composite screen (1) to convert light energy into electrical energy; At least one sound intensity sensor (3) is installed on the outside of the composite screen (1) for real-time monitoring of external environmental noise and generating noise intensity signals; A pulsed ultrasonic generator (4) is installed on the composite screen (1) to generate and emit ultrasonic waves that eliminate noise. The power supply line connects the flexible photovoltaic panel (2), the sound intensity sensor (3) and the pulse ultrasound generator (4) to distribute the electrical energy generated by the flexible photovoltaic panel (2) to the sound intensity sensor (3) and the pulse ultrasound generator (4). The control unit has its signal input terminal connected to the sound intensity sensor (3) and its control output terminal connected to the pulse ultrasound generator (4); the control unit is configured to receive the noise intensity signal and send a start command to the pulse ultrasound generator (4) when its value exceeds a preset threshold.

2. The active composite energy-saving upright sound barrier according to claim 1, characterized in that, The composite screen (1) is located on both sides of the road, and the upper part of the composite screen (1) is inclined inward.

3. The active composite energy-saving upright sound barrier according to claim 1, characterized in that, The number of sound intensity sensors (3) is two, which are respectively installed on the upper and lower parts of the outer side of the composite screen (1).

4. The active composite energy-saving vertical sound barrier according to claim 1 or 2, characterized in that, It also includes a street lamp (5), which is connected to the flexible photovoltaic panel (2) through a power supply line and is powered by the flexible photovoltaic panel (2).

5. The active composite energy-saving upright sound barrier according to claim 1, characterized in that, The control unit is integrated inside the sound intensity sensor (3) or the pulse ultrasound generator (4).

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