Atmosphere parameter-based non-imaging projection device and control method

Abstract

An atmosphere parameter-based non-imaging projection device relates to the technical field of optical systems, the output ends of a spectrum analyzer and a sound level meter are connected to the input end of an analog-to-digital converter, the output end of the analog-to-digital converter is connected to the input end of a digital signal processor, the output end of the digital signal processor is connected to the input end of a digital-to-analog converter, the output end of the digital-to-analog converter is connected to the pin of a laser diode, the digital-to-analog converter controls the current passing through the laser diode, the light-emitting surface of the laser diode is arranged at the light ray incident end of an optical fiber, the light ray incident surface of a convex lens is arranged at the light ray emitting end of the optical fiber, and the light ray emitting surface of the convex lens is arranged with a diffraction grating. A control method of the atmosphere parameter-based non-imaging projection device comprises the following steps: step one, composing a full-color laser system; step two, collecting sound parameters and frequency parameters, removing the sound parameters and frequency parameters generated by the playing system itself through the calculation of a digital signal processor, and controlling the light emission of a laser diode and a motor.

Description

Technical Field

[0001] This invention relates to the field of optical system technology, and to a non-imaging projection device and control method based on atmospheric parameters. Background Technology

[0002] Traditional reflective flashing balls are used in KTVs, nightclubs, or home entertainment venues. However, the reflective materials used in these balls are mostly one-way reflective, meaning they only reflect light in one direction. Therefore, the reflection effect is not very good at certain angles. Furthermore, they have a limited range of reflection angles, failing to enhance the entertainment atmosphere, visual effects, or the overall visual experience for dancers. They also do not significantly improve the entertainment value. Summary of the Invention

[0003] To address the above problems, and to solve at least one of them, the present invention aims to provide a non-imaging projection device and control method based on atmosphere parameters by collecting sound parameters and frequency parameters that reflect the atmosphere, and controlling the intensity of light and the switching frequency of non-imaging projection.

[0004] The technical solution to achieve the purpose of this invention is as follows:

[0005] A non-imaging projection device based on atmospheric parameters includes: a spectrum analyzer, a sound level meter, an analog-to-digital converter (ADC), a digital signal processor (DSP), a digital-to-analog converter (DAC), a laser diode, an optical fiber, a convex lens, and a diffraction grating. The outputs of the spectrum analyzer and the sound level meter are connected to the inputs of the ADC. The output of the ADC is connected to the input of the DSP. The output of the DSP is connected to the input of the DAC. The output of the DAC is connected to a pin of the laser diode. The DAC controls the current flowing through the laser diode. The light-emitting surface of the laser diode is positioned at the light-incident end of the optical fiber, and the light-incident surface of the convex lens is positioned at the light-emitting end of the optical fiber. At the light-emitting end of the convex lens, a diffraction grating is set on the light-emitting surface. It should be noted that the atmosphere parameters for KTV, disco, and home entertainment scenarios include sound parameters and frequency parameters, which are collected using a spectrum analyzer and a sound level meter. Among the sound parameters, sound pressure level is the primary parameter, and among the frequency parameters, sound frequency is the primary parameter. The spectrum analyzer collects the following parameters, which reflect the atmosphere of KTV and disco: Frequency distribution: The spectrum analyzer displays the intensity distribution of sound signals at different frequencies, reflecting the type and rhythm of the music, thus reflecting the atmosphere of the KTV and disco; Sound pressure level: The spectrum analyzer measures the intensity of the sound, i.e., the sound pressure level. In KTV and disco, the sound pressure level is usually relatively high, reflecting the intensity of the atmosphere; Volume variation. The spectrum analyzer displays volume changes, reflecting the rhythm and variations of the music, thus reflecting the atmosphere of KTVs and nightclubs; Timbre characteristics: The spectrum analyzer displays the harmonic distribution of sound signals at different frequencies, reflecting the timbre characteristics of the music, thus reflecting the atmosphere of KTVs and nightclubs; Music type: The spectrum analyzer determines the type of music based on the intensity distribution of sound signals at different frequencies, thus reflecting the atmosphere of KTVs and nightclubs. For example, pop and electronic music are usually played in nightclubs, while folk and rock music are more suitable for KTVs; The sound level meter collects the following parameters to reflect the atmosphere of KTVs and nightclubs: Sound pressure level (SPL): Reflects the volume of the music; the higher the SPL, the louder the music and the more lively the atmosphere; Frequency... Frequency distribution: Reflects the pitch and rhythm of music. Different music genres and styles will have different frequency distributions. For example, electronic music has more high-frequency distributions, while rock music has more low-frequency distributions. Noise level: Reflects the noise level of the environment, such as human voices, bar noise, etc. The higher the level, the noisier the environment and the more intense the atmosphere. Temporal distribution: Reflects the rhythm and melody changes of music. For example, dance music has frequent rhythm changes and an intense atmosphere, while slow songs have fewer rhythm changes and a more intimate atmosphere. Music genre: Different music genres and styles will bring different atmospheres, such as dance music, rock, pop, etc. Spectrum analyzers and sound level meters need to be equipped with appropriate sensors to measure the atmosphere parameters of KTV, disco, and home entertainment scenarios, including sound parameters and frequency parameters.For a spectrum analyzer, select a suitable microphone sensor, typically a condenser or dynamic microphone. When measuring atmospheric parameters in KTV, nightclub, and home entertainment scenarios, place the microphone in the center of the scene for the most accurate results. Simultaneously, adjust the frequency range and resolution of the spectrum analyzer to capture various sound frequencies within the scene. For a sound level meter, select a suitable sound pressure level sensor, either a condenser or piezoelectric sensor. When measuring atmospheric parameters in KTV, nightclub, and home entertainment scenarios, place the sensor in the center of the scene for the most accurate results. Simultaneously, adjust the response time and frequency weighting of the sound level meter to capture various sound parameters within the scene. The spectrum analyzer and sound level meter are connected to an analog-to-digital converter (ADC). They acquire sound and frequency parameters, converting the sound signal into an analog electrical signal. After amplification and filtering, the analog signal enters the ADC, which converts it into a digital signal. The digital signal then enters a digital signal processor (DSP). The digital signal processor (DSP) processes digital signals to form control signals. These control signals then enter the digital-to-analog converter (DAC), converting them from digital to analog. The control signals control the laser diode, and through current, they control the laser diode's color. The laser diode's luminous intensity is directly proportional to the current. By adjusting the current, the luminous intensity and color of the laser diode are controlled. Therefore, sound parameters and frequency parameters control the laser diode's light emission. Sound parameters are proportional to the current amplitude, corresponding to controlling the laser diode's color and brightness. Frequency parameters are proportional to the frequency of current changes, corresponding to controlling the frequency of color and brightness changes. The laser diode can output red, green, and blue colors. The laser light from the laser diode is transmitted through optical fiber via total internal reflection. The optical fiber has bends and folds, and the light-emitting end of the fiber forms a spherical surface, improving the roundness of the sphere and preventing damage from contact during rotation. The positions of the ADC, DSP, DAC, and laser diode are unrestricted, increasing the degree of freedom in their placement.Several optical fibers transmit laser light to a convex lens, such as 5 or 10 fibers. The laser light is focused at a single point by the lens and then diverges outward from the focal point. The smaller the radius of curvature of the convex lens, the stronger the divergence effect. After being diverged by the lens, the laser light enters through the incident surface of a diffraction grating. Diffraction occurs at the grating, and beams of different wavelengths deviate from their original directions at different angles, forming a series of colored fringes. The exit surfaces of several diffraction gratings are then arranged into a sphere. Of course, the sphericity of the sphere is not high; for example, 60 or 80 diffraction gratings are used to form a sphere. The diffraction gratings on the sphere project non-image onto the surface.

[0006] A control method for a non-imaging projection device based on atmospheric parameters, comprising the following specific steps:

[0007] Step 1: Assemble a full-color laser system. One laser diode corresponds to one optical fiber, and the light-emitting ends of several optical fibers correspond to a convex lens. It should be noted that in assembling a full-color laser system, the laser emitted by the laser diode is transmitted through the optical fiber to the convex lens. The convex lens focuses different colors of light onto the same point to form a full-color laser. It is important to note that different colors of light have different refractive indices when passing through the convex lens, so different convex lenses need to be selected according to different colors of light. In addition, the laser diode and optical fiber need to be precisely adjusted to ensure stable light transmission and focusing effect.

[0008] Step 2: Acquire sound and frequency parameters. The digital signal processor (DSP) calculates and removes the sound and frequency parameters generated by the playback system itself, controlling the laser diode's illumination and the motor. It should be noted that the sound parameter S is primarily based on sound pressure level (SPL), which refers to the intensity of sound. The unit of sound parameter S is decibels (dB). The frequency parameter f is primarily based on the frequency of sound, and the unit of frequency f is hertz (Hz). At the same time point, the sound and frequency parameters acquired by the spectrum analyzer and sound level meter each have a distribution range. For example, at any given time point, the distribution of sound parameters might be S1, S2, S3, ..., S... n Let n represent a natural number, S1 represent the intensity of the first sound, S2 represent the intensity of the second sound, S3 represent the intensity of the third sound, and S... n S1 represents the intensity of the nth sound. If S1 is a sound parameter generated by the playback system itself, such as music or video sound, then S1 is removed. For S2, S3, ..., S... n Summation and averaging are performed to obtain the average value S of the sound parameters. 平 The details are as follows:

[0009] S 平 =(S2+S3+……+S n )÷(n-1)

[0010] + indicates addition, ÷ indicates division; use the average value S of the sound parameters. 平 The laser diode emits light, the current changes at the output of the digital-to-analog converter (DAC), and the average value S of the sound parameters. 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the intensity and color of the laser diode's light emission.

[0011] At any given time point, the frequency parameters are distributed as f1, f2, f3, ..., f n n represents a natural number, f1 represents the first frequency, f2 represents the second frequency, f3 represents the third frequency, and f n Let f1 represent the nth frequency. If f1 is a frequency generated by the audio equipment itself, then f1 is removed. For f2, f3, ..., f... n Summing and averaging yields the average frequency f. 平 The details are as follows:

[0012] f 平 =(f2+f3+……+f n )÷(n-1)

[0013] + indicates addition, ÷ indicates division; use the average value f of the frequency parameter. 平 The average value f of the frequency parameter is used to control the emission of light from the laser diode and the changing current at the output of the digital-to-analog converter (DAC). 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the switching frequency of the laser diode's emission.

[0014] Compared with the prior art, the beneficial effects of the present invention include:

[0015] (1) The laser of the laser diode is transmitted in the optical fiber by total internal reflection. The optical fiber has bends and folds. The light emission end of the optical fiber forms a spherical surface, which improves the roundness of the spherical surface and avoids contact damage during rotation. The positions of the analog-to-digital converter (ADC), digital signal processor (DSP), digital-to-analog converter (DAC) and laser diode are not restricted, which improves the degree of freedom of the positions of the analog-to-digital converter (ADC), digital signal processor (DSP), digital-to-analog converter (DAC) and laser diode.

[0016] (2) Average value S of sound parameters 平 and the average value f of the frequency parameter 平It accurately reflects the dancers' state and enhances the atmosphere: By controlling the light intensity and frequency of the non-image projection, and adjusting the laser diodes according to the rhythm and intensity of the music, a more enthusiastic and joyful atmosphere is created, enhancing the dancers' sense of participation and interaction; it enhances visual effects: changes in the light intensity and frequency of the non-image projection produce different visual effects, such as flashing, jumping, and gradation, which resonate with the dancers' rhythm and emotions, enhancing their visual experience; and it increases entertainment value: changes in the light intensity and frequency of the luminous spheres can resonate with the rhythm and emotions of the music, increasing entertainment and fun, allowing dancers to better enjoy the atmosphere and fun of entertainment venues such as KTVs and nightclubs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an inner sphere and an outer spherical ring of a non-imaging projection device based on atmospheric parameters;

[0019] Figure 2 This is a schematic diagram illustrating the positional relationship between an optical fiber, a convex lens, and a diffraction grating in a non-imaging projection device based on atmospheric parameters.

[0020] Figure 3 This is a flowchart of a control method for a non-imaging projection device based on atmospheric parameters;

[0021] The attached diagram shows the markings and corresponding component names:

[0022] 1-Outer spherical ring, 2-Space between the outer spherical ring and the inner sphere, 3-Outer surface of the inner sphere, 4-Internal space of the inner sphere, 5-Fiber optic cable, 6-Convex lens, 7-Diffraction grating. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] The present invention will be further described in detail below with reference to embodiments.

[0028] Example 1:

[0029] like Figures 1 to 2As shown, a non-imaging projection device based on atmospheric parameters includes: a spectrum analyzer, a sound level meter, an analog-to-digital converter (ADC), a digital signal processor (DSP), a digital-to-analog converter (DAC), a laser diode, an optical fiber, a convex lens, and a diffraction grating. The outputs of the spectrum analyzer and the sound level meter are connected to the input of the ADC. The output of the ADC is connected to the input of the DSP. The output of the DSP is connected to the input of the DAC. The output of the DAC is connected to the pin of the laser diode. The DAC controls the current through the laser diode. The light-emitting surface of the laser diode is located at the light-incident end of the optical fiber, and the light-incident surface of the convex lens is located at the light-incident end of the optical fiber. The light-emitting end of the fiber optic cable has a diffraction grating set on the light-emitting surface of the convex lens. It should be noted that the atmosphere parameters for KTV, disco, and home entertainment scenarios include sound parameters and frequency parameters, which are collected using a spectrum analyzer and a sound level meter. Among the sound parameters, sound pressure level is the primary parameter, and among the frequency parameters, sound frequency is the primary parameter. The spectrum analyzer collects the following parameters, which reflect the atmosphere of KTV and disco: Frequency distribution: The spectrum analyzer displays the intensity distribution of sound signals at different frequencies, reflecting the type and rhythm of the music, thus reflecting the atmosphere of the KTV and disco; Sound pressure level: The spectrum analyzer measures the intensity of the sound, i.e., the sound pressure level. In KTV and disco, the sound pressure level is usually relatively high, reflecting the intensity of the atmosphere; Volume. Variation: The spectrum analyzer displays changes in volume, reflecting the rhythm and variations of the music, thus reflecting the atmosphere of KTVs and nightclubs; Timbre characteristics: The spectrum analyzer displays the harmonic distribution of sound signals at different frequencies, reflecting the timbre characteristics of the music, thus reflecting the atmosphere of KTVs and nightclubs; Music type: The spectrum analyzer determines the type of music based on the intensity distribution of sound signals at different frequencies, thus reflecting the atmosphere of KTVs and nightclubs. For example, pop music and electronic music are usually played in nightclubs, while folk and rock music are more suitable for KTVs; The sound level meter collects the following parameters to reflect the atmosphere of KTVs and nightclubs: Sound pressure level (SPL): Reflects the volume of the music; the higher the SPL, the louder the music and the more lively the atmosphere. Frequency distribution: Reflects the pitch and rhythm of music. Different music genres and styles will have different frequency distributions. For example, electronic music has more high-frequency distribution, while rock music has more low-frequency distribution. Noise level: Reflects the noise level of the environment, such as human voices, bar noise, etc. The higher the level, the noisier the environment and the more intense the atmosphere. Temporal distribution: Reflects the rhythm and melody changes of music. For example, dance music has frequent rhythm changes and an intense atmosphere, while slow songs have fewer rhythm changes and a more intimate atmosphere. Music genre: Different music genres and styles will bring different atmospheres, such as dance music, rock, pop, etc. Spectrum analyzers and sound level meters need to be equipped with appropriate sensors to measure the atmosphere parameters of KTV, disco, and home entertainment scenarios, including sound parameters and frequency parameters.For a spectrum analyzer, select a suitable microphone sensor, typically a condenser or dynamic microphone. When measuring atmospheric parameters in KTV, nightclub, and home entertainment scenarios, place the microphone in the center of the scene for the most accurate results. Simultaneously, adjust the frequency range and resolution of the spectrum analyzer to capture various sound frequencies within the scene. For a sound level meter, select a suitable sound pressure level sensor, either a condenser or piezoelectric sensor. When measuring atmospheric parameters in KTV, nightclub, and home entertainment scenarios, place the sensor in the center of the scene for the most accurate results. Simultaneously, adjust the response time and frequency weighting of the sound level meter to capture various sound parameters within the scene. The spectrum analyzer and sound level meter are connected to an analog-to-digital converter (ADC). They acquire sound and frequency parameters, converting the sound signal into an analog electrical signal. After amplification and filtering, the analog signal enters the ADC, which converts it into a digital signal. The digital signal then enters a digital signal processor (DSP). The digital signal processor (DSP) processes digital signals to form control signals. These control signals then enter the digital-to-analog converter (DAC), converting them from digital to analog. The control signals control the laser diode, and through current, they control the laser diode's color. The laser diode's luminous intensity is directly proportional to the current. By adjusting the current, the luminous intensity and color of the laser diode are controlled. Therefore, sound parameters and frequency parameters control the laser diode's light emission. Sound parameters are proportional to the current amplitude, corresponding to controlling the laser diode's color and brightness. Frequency parameters are proportional to the frequency of current changes, corresponding to controlling the frequency of color and brightness changes. The laser diode can output red, green, and blue colors. The laser light from the laser diode is transmitted through optical fiber via total internal reflection. The optical fiber has bends and folds, and the light-emitting end of the fiber forms a spherical surface, improving the roundness of the sphere and preventing damage from contact during rotation. The positions of the ADC, DSP, DAC, and laser diode are unrestricted, increasing the degree of freedom in their placement.Several optical fibers transmit laser light to a convex lens, such as 5 or 10 fibers. The laser light is focused at a single point by the convex lens and then diverges outward from the focal point. The smaller the radius of curvature of the convex lens, the stronger the divergence effect. After being diverged by the convex lens, the laser light enters through the incident surface of the diffraction grating and undergoes diffraction. Beams of different wavelengths deviate from their original direction at different angles, forming a series of colored fringes. The exit surfaces of several diffraction gratings are combined to form a sphere. Of course, the sphericity of the sphere is not high. For example, 60 or 80 diffraction gratings are combined to form a sphere. The diffraction gratings on the sphere project non-image onto the surface.

[0030] Furthermore, an analog-to-digital converter (ADC), a digital signal processor (DSP), a digital-to-analog converter (DAC), a laser diode, and an optical fiber form an inner sphere, while a convex lens and a diffraction grating form an outer spherical ring. The inner sphere is encased in an outer spherical ring, which is connected to a motor. The motor is controlled by the DSP via the DAC, and the outer spherical ring rotates 360 degrees under controlled conditions. It should be noted that, combined with… Figure 1 and Figure 2 The analog-to-digital converter (ADC), digital signal processor (DSP), digital-to-analog converter (DAC), and laser diode are housed within the inner sphere's internal space 4. The light-emitting ends of the optical fiber 5 are arranged in a spherical shape on the outer surface 3 of the inner sphere. The ADC, DSP, DAC, laser diode, and optical fiber are fixed. A convex lens 6 and a diffraction grating 7 are arranged in a spherical shape on the outer sphere ring 1. The distance between the convex lens 6 and the diffraction grating 7 is greater than twice the focal length of the convex lens 6 to achieve the purpose of diverging laser light. The convex lens 6 is on the inner side of the outer sphere ring 1, and the diffraction grating 7 is on the outer side of the outer sphere ring 1. The relative positions of the convex lens 6 and the diffraction grating 7 are fixed. In the working state, within the movement gap space 2 between the outer sphere ring and the inner sphere... The convex lens 6 rotates around the optical fiber 5; preferably, a through hole is provided at the top of the outer ball ring 1, and the inner ball is fixed through the through hole. The motor is connected to the outer ball ring, and the motor controls the movement gap space 2 between the outer ball ring and the inner ball. The outer ball ring 1 rotates 360 degrees in a plane perpendicular to the through hole. The rotation speed of the motor is controlled by the frequency parameter. The specific process is as follows: the spectrum analyzer and the sound level meter collect the frequency parameter to obtain the analog frequency signal. The frequency signal is converted into a digital frequency signal by the analog-to-digital converter (ADC). The digital frequency signal is processed by the digital signal processor (DSP) and outputs a digital signal to control the motor. The digital signal to control the motor is converted into an analog signal to control the motor by the digital-to-analog converter (DAC). The analog signal to control the motor controls the speed of the motor by changing the magnitude of the current.

[0031] Example 2:

[0032] like Figure 3As shown, the present invention provides a non-imaging projection device and control method based on atmosphere parameters. The specific steps of the method are as follows:

[0033] Step 1: Assemble a full-color laser system. One laser diode corresponds to one optical fiber, and the light-emitting ends of several optical fibers correspond to a convex lens.

[0034] Step 2: Collect sound parameters and frequency parameters, and use the digital signal processor (DSP) to remove the sound parameters and frequency parameters generated by the playback system itself, and control the laser diode to emit light and the motor.

[0035] In step one, a full-color laser system is assembled. One laser diode corresponds to one optical fiber, and the light-emitting ends of several optical fibers correspond to a convex lens. It should be noted that in assembling a full-color laser system, the laser emitted by the laser diode is transmitted through the optical fiber to the convex lens. The convex lens focuses different colors of light onto the same point to form a full-color laser. It is important to note that different colors of light have different refractive indices when passing through the convex lens, so different convex lenses need to be selected according to different colors of light. In addition, the laser diode and optical fiber need to be precisely adjusted to ensure stable light transmission and focusing effect.

[0036] To better achieve the objectives of this invention, step two involves collecting sound parameters and frequency parameters. Through calculation by a digital signal processor (DSP), the sound and frequency parameters generated by the playback system itself are removed, and the laser diode and motor are controlled to emit light. It should be noted that the sound parameter S is primarily based on sound pressure level (SPL), which refers to the intensity of sound. The unit of sound parameter S is decibels (dB). The frequency parameter f is primarily based on the frequency of sound, and the unit of frequency parameter f is hertz (Hz). At the same time point, the sound parameters and frequency parameters collected by the spectrum analyzer and sound level meter each have a distribution range. For example, at any given time point, the distribution of sound parameters might be S1, S2, S3, ..., S... n Let n represent a natural number, S1 represent the intensity of the first sound, S2 represent the intensity of the second sound, S3 represent the intensity of the third sound, and S... n S1 represents the intensity of the nth sound. If S1 is a sound parameter generated by the playback system itself, such as music or video sound, then S1 is removed. For S2, S3, ..., S... n Summation and averaging are performed to obtain the average value S of the sound parameters. 平 The details are as follows:

[0037] S 平 =(S2+S3+……+S n )÷(n-1)

[0038] + indicates addition, ÷ indicates division; use the average value S of the sound parameters.平 The laser diode emits light, the current changes at the output of the digital-to-analog converter (DAC), and the average value S of the sound parameters. 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the intensity and color of the laser diode's light emission.

[0039] At any given time point, the frequency parameters are distributed as f1, f2, f3, ..., f n n represents a natural number, f1 represents the first frequency, f2 represents the second frequency, f3 represents the third frequency, and f n Let f1 represent the nth frequency. If f1 is a frequency generated by the audio equipment itself, then f1 is removed. For f2, f3, ..., f... n Summing and averaging yields the average frequency f. 平 The details are as follows:

[0040] f 平 =(f2+f3+……+f n )÷(n-1)

[0041] + indicates addition, ÷ indicates division; use the average value f of the frequency parameter. 平 The average value f of the frequency parameter is used to control the emission of light from the laser diode and the changing current at the output of the digital-to-analog converter (DAC). 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the switching frequency of the laser diode's emission; the average value f of the frequency parameter is used. 平 The average value f of the changing current and frequency parameter at the output of the digital-to-analog converter (DAC) controls the motor. 平 The output of the digital-to-analog converter (DAC) is represented by current variation. This variation controls the motor's rotation speed, which in turn controls the rotation of the outer spherical ring. A diffraction grating on the spherical surface projects a non-image onto the ring. The intensity, color variations, and frequency variations of this projection are controlled by the average value S of the sound parameters. 平 and the average value f of the frequency parameter 平 The average value of the sound parameters S 平 and the average value f of the frequency parameter 平It accurately reflects the dancers' state and enhances the atmosphere: By controlling the light intensity and frequency of the non-image projection, and adjusting the laser diodes according to the rhythm and intensity of the music, a more enthusiastic and joyful atmosphere is created, enhancing the dancers' sense of participation and interaction; it enhances visual effects: changes in the light intensity and frequency of the non-image projection produce different visual effects, such as flashing, jumping, and gradation, which resonate with the dancers' rhythm and emotions, enhancing their visual experience; and it increases entertainment value: changes in the light intensity and frequency of the luminous spheres can resonate with the rhythm and emotions of the music, increasing entertainment and fun, allowing dancers to better enjoy the atmosphere and fun of entertainment venues such as KTVs and nightclubs.

[0042] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A non-imaging projection device based on atmospheric parameters, comprising: The system comprises a spectrum analyzer, a sound level meter, an analog-to-digital converter (ADC), a digital signal processor (DSP), a digital-to-analog converter (DAC), a laser diode, an optical fiber, a convex lens, and a diffraction grating. The outputs of the spectrum analyzer and the sound level meter are connected to the input of the ADC; the output of the ADC is connected to the input of the DSP; the output of the DSP is connected to the input of the DAC; the output of the DAC is connected to the pin of the laser diode; the DAC controls the current flowing through the laser diode; the light-emitting surface of the laser diode is located at the light-incident end of the optical fiber; the light-incident surface of the convex lens is located at the light-exit end of the optical fiber; and a diffraction grating is installed on the light-exit surface of the convex lens. The ADC and the digital signal processor (DSP) are connected to the input of the DAC; the output of the DAC is connected to the pin of the laser diode; the DAC controls the current flowing through the laser diode; the light-emitting surface of the laser diode is located at the light-incident end of the optical fiber; the light-incident surface of the convex lens is located at the light-exit end of the optical fiber; and a diffraction grating is installed on the light-exit surface of the convex lens. The inner sphere is formed by the DSP processor, DAC, laser diode, and optical fiber, and the outer sphere is formed by the convex lens and diffraction grating. The inner sphere is encased in the outer sphere ring, which is controlled to rotate 360 ​​degrees. The convex lens (6) is inside the outer sphere ring (1), and the diffraction grating (7) is outside the outer sphere ring (1). The relative positions of the convex lens (6) and the diffraction grating (7) are fixed. In the working state, the convex lens (6) rotates around the optical fiber (5) in the movement gap space (2) between the outer sphere ring (1) and the inner sphere. A through hole is set at the top of the outer sphere ring (1) to fix the inner sphere. The motor is connected to the outer sphere ring (1) and controls the movement gap space (2) between the outer sphere ring (1) and the inner sphere. The outer sphere ring (1) rotates 360 degrees in a plane perpendicular to the through hole.

2. The non-imaging projection device based on atmospheric parameters according to claim 1, characterized in that, Spectrum analyzers and sound level meters collect sound parameters and frequency parameters.

3. The non-imaging projection device based on atmospheric parameters according to claim 2, characterized in that, The laser diode emits light by using sound parameters and frequency parameters.

4. The non-imaging projection device based on atmospheric parameters according to claim 1, characterized in that, The distance between the convex lens (6) and the diffraction grating (7) is greater than twice the focal length of the convex lens (6).

5. A control method for a non-imaging projection device based on atmospheric parameters according to any one of claims 1 to 4, characterized in that, The specific steps of the method are as follows: Step 1: Assemble a full-color laser system, with one laser diode corresponding to one optical fiber, and the light emitting end of several optical fibers corresponding to a convex lens. Step 2: Collect sound parameters and frequency parameters, and use the digital signal processor (DSP) to remove the sound parameters and frequency parameters generated by the playback system itself, and control the laser diode to emit light and the motor.

6. The control method for a non-imaging projection device based on atmospheric parameters according to claim 5, characterized in that: In step two, the average value S of the sound parameters 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the intensity and color of the laser diode's light emission.

7. The control method for a non-imaging projection device based on atmospheric parameters according to claim 5, characterized in that: In step two, the average value f of the frequency parameter 平 The output of the digital-to-analog converter (DAC) is represented by a change in current, which controls the switching frequency of the laser diode's emission.

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