Audio equipment based on visible light communication

Abstract

The utility model discloses audio equipment based on visible light communication, and belongs to the technical field of available optical communication. The equipment comprises shells, a transmitting module and a receiving module, the number of the shells is two, the transmitting module and the receiving module are arranged in the two shells respectively, a lampshade is arranged between the two shells, the transmitting module comprises an LED lamp, an input port and an input circuit board, the input circuit board is fixedly connected to the shells, and the LED lamp is connected with the input port. The receiving module comprises a photodiode, an output circuit board and a loudspeaker, and the two shells are detachably connected with the lampshade through two sets of connecting mechanisms respectively. Audio signals can be converted into optical signals to be transmitted, then the optical signals are received through the photodiode and converted into electric signals, and then the electric signals are input into the loudspeaker to be played; and meanwhile, when the light signal enters the lampshade, the lampshade can emit light to achieve a lighting function, so that the audio equipment can be used as lighting equipment at the same time, and visible light can be better utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to can use light communication technical field, especially, it is visible light communication based audio frequency equipment. BACKGROUND

[0002] Visible light communication (English: Visible Light Communications, abbreviation VLC) is a kind of wireless communication technology, it is using the bright and dark flicker signal of information transmission communication technology of object such as fluorescent lamp or light emitting diode (LED), the frequency of visible light is between 400THz (wavelength 780nm) to 800THz (wavelength 375nm), the existing visible light communication equipment, the utilization of visible light is insufficient, need a kind of new visible light communication equipment to solve this problem. SUMMARY

[0003] Other features and advantages of the present utility model will be set forth in the following description of the utility model, and become apparent from the description, or be learned by practicing the present utility model. The objectives and other advantages of the present utility model can be realized and obtained by the structure specifically pointed out in the description and other accompanying drawings of the description.

[0004] The utility model aims at overcoming the above-mentioned insufficient, provide a kind of visible light communication based audio frequency equipment.

[0005] To realize the above-mentioned purpose, the technical solution of the utility model is as follows: a kind of visible light communication based audio frequency equipment, including shell, transmitting module and receiving module, the shell is provided with two, the transmitting module and receiving module are respectively arranged in two shells, lampshade is arranged between two shells, the transmitting module includes LED lamp, input port and input circuit board, the LED lamp and input port are all connected on the input circuit board, the input circuit board is fixedly connected on shell, the LED lamp passes through the shell and enters the lampshade, the input port is through the shell to outside, the receiving module includes photodiode, output circuit board and loudspeaker, the loudspeaker is through the shell to external, the photodiode is through shell to the lampshade, two the shell is respectively through two groups of connecting mechanisms and the lampshade detachably connected.

[0006] By adopting the technical scheme, the audio signal can be transmitted to the input circuit for processing through the input port, the input port can be a USB interface, a type C interface or a TRRS interface, etc., the audio signal is converted by the input circuit into a bright and dark flashing signal of the LED lamp, is received by the photodiode after being transmitted in space and is converted into an electric signal, the electric signal is input into the loudspeaker after being processed by the output circuit, the loudspeaker converts the electric signal into sound for playing, the function of transmitting the audio by using the visible light is realized, and since the LED lamp is arranged in the lampshade, the visible light used for data communication can also be used for illumination, and the lampshade can be disassembled and replaced through the connecting mechanism.

[0007] Preferably, the input circuit board is provided with an amplification circuit module and a signal modulation module.

[0008] Preferably, the output circuit board is provided with a preamplification module, a low-pass filter module and a power amplification module.

[0009] Preferably, the two connecting mechanisms include two clamping pieces, the two clamping pieces are slidably connected to two sides of the shell respectively, and the two clamping pieces are pressed on the lampshade through the pressing mechanism.

[0010] Preferably, the pressing mechanism includes a spring, the spring is arranged between the clamping piece and the shell, and the shell is provided with a separation mechanism for driving the clamping piece to separate from the lampshade.

[0011] Preferably, the separation mechanism includes a push rod, the push rod is slidably connected to the shell, one end of the push rod is fixedly connected to the clamping piece, and the other end of the push rod extends outside the shell.

[0012] Preferably, the pressing mechanism comprises a threaded rod, the threaded rod penetrates through the shell and two clamping pieces, the threaded rod is rotationally connected with the shell, the two clamping pieces are threadedly connected with the threaded rod, and the thread rotation directions between the two clamping pieces and the threaded rod are opposite.

[0013] Preferably, a friction pad is arranged between each of the two clamping pieces and the lampshade, and the friction pad is fixedly connected with the clamping piece. The friction pad is made of soft rubber or silicone, and a large friction force can be generated through the pressing of the clamping piece, thereby ensuring the fixing effect of the lampshade.

[0014] Preferably, the shell is fixedly connected with a convex lens, and the convex lens is arranged above the photodiode. The convex lens can converge visible light on the photodiode, thereby realizing the transmission effect of replacement.

[0015] In summary, the beneficial effects of the utility model are as follows:

[0016] 1. The input circuit board, LED lamp, photodiode and output circuit board can convert an audio signal into a light signal for transmission, then the light signal is received by the photodiode and converted into an electric signal for input into a loudspeaker for playing, and the light signal can make the lampshade emit light when entering the lampshade, thereby achieving the function of illumination, so that the audio equipment can be used as an illumination equipment, and the visible light can be better utilized.

[0017] 2. The lampshade can be disassembled and replaced through the connecting mechanism.

[0018] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0019] It is obvious that the purposes of the utility model and other purposes will become more apparent after the description of the preferred embodiments of the utility model in the following various drawings and drawings.

[0020] In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, one or more preferred embodiments are described below, and the drawings are shown, and the detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model.

[0022] In the drawings, identical parts are designated with the same reference numerals, and the drawings are schematic and not necessarily drawn to scale.

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only one or several embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a whole structure schematic view of embodiment 1;

[0025] Figure 2 It is a whole structure schematic view of embodiment 2;

[0026] Figure 3 It is a circuit diagram of the transmitting module;

[0027] Figure 4 It is a circuit diagram of the receiving module.

[0028] Main drawing reference numerals: 1, shell; 2, lampshade; 3, input port; 4, LED lamp; 5, input circuit board; 6, photodiode; 7, output circuit board; 8, loudspeaker; 9, clamping piece; 10, spring; 11, push rod; 12, screw rod; 13, friction pad; 14, convex lens. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0030] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Example 1

[0034] like Figure 1 As shown, an audio device based on [the device name] includes a housing 1, a transmitting module, and a receiving module. There are two housings 1, and the transmitting module and the receiving module are respectively disposed in the two housings 1. A lampshade 2 is disposed between the two housings 1. The transmitting module includes an LED light 4, an input port 3, and an input circuit board 5. The LED light 4 and the input port 3 are both connected to the input circuit board 5, which is fixedly connected to the housing 1. The LED light 4 passes through the housing 1 and enters the lampshade 2. The input port 3 passes through the housing 1 and extends to the outside. The receiving module includes a photodiode 6, an output circuit board 7, and a speaker 8. The speaker 8 passes through the housing 1 and extends to the outside. The photodiode 6 passes through the housing 1 and extends into the lampshade 2. The two housings 1 are detachably connected to the lampshade 2 through two sets of connecting mechanisms.

[0035] By adopting the technical scheme, the audio signal can be transmitted to the input circuit for processing through the input port 3, the input port 3 can be a USB interface, a type C interface or a TRRS interface, etc., the audio signal is converted by the input circuit to facilitate the bright-dark flashing signal of the LED lamp 4, and after being transmitted in space, the audio signal is received by the photodiode 6 and converted into an electric signal, the electric signal is input into the loudspeaker 8 after being processed by the output circuit, the loudspeaker 8 converts the electric signal into sound for playing, the function of transmitting the audio signal by using the visible light is realized, and meanwhile, since the LED lamp 4 is arranged in the lampshade 2, the visible light used for data communication can also be used for lighting, and the lampshade 2 can be disassembled and replaced through the connecting mechanism.

[0036] The input circuit board 5 is provided with an amplification circuit module and a signal modulation module. After the audio signal is input through the input port 3, the audio signal enters the LED lamp 4 after sequentially passing through the amplification circuit module and the signal modulation module, and the specific circuit is as shown in Figure 3 After the audio signal is input, the voltage signal is converted into a current signal through R3, and the current is amplified by the triode, so that the current change on R5 is caused. The resistors R2 and R4 are respectively 30K and 10K in resistance value for voltage division, and provide a certain bias voltage for the triode to work in an amplification state, R5 is 5 ohms in resistance value for controlling the current of the LED, the collector current of the triode is equal to the emitter current, and the current flowing through the LED is approximately equal to the current flowing through the resistor R5. The emitter circuit provides a suitable bias current and modulation current for the white light LED, so that the white light LED can work in a linear working range greater than the threshold value, and the transistor, the white light emitting diode and the voltage bias circuit constitute a white LED driving circuit, so as to drive the LED lamp 4 to work normally, emit white light and serve as a signal carrier.

[0037] The output circuit board 7 is provided with a preamplification module, a low-pass filter module and a power amplification module. After the optical signal is converted into an electric signal by the photodiode 6, the electric signal is processed by sequentially passing through the preamplification module, the low-pass filter module and the power amplification module and then enters the loudspeaker 8, and the circuit diagram is as shown in Figure 4 After the optical signal is propagated in space, the optical signal is received by the photodiode 6 and converted into a current signal, and the voltage conversion of the output current of the photodiode 6 is realized by the series resistor. The function of the preamplification circuit is to receive a small voltage signal from the signal source and amplify it to the input threshold required by the power amplifier. In the room, due to the attenuation of the rays, there is noise interference. If the gain of the first-stage amplification circuit is too large, the noise will also be amplified and released to the next-stage circuit, so the gain of the first-stage amplification circuit should not be too high. In the design, R18 and R21 are both 100K ohms, which constitute a voltage division circuit, and R15 is 10K ohms as an input resistor. C14 is 14UF as a filter capacitor. The amplification multiple Av of the preamplification circuit depends on R18 and R21, and the calculation formula is:

[0038]

[0039] Therefore, the amplification factor of the preamplifier circuit is 11 times.

[0040] Because the light noise is very strong under the normal indoor lighting condition, a simple filter circuit is formed by adding a filter capacitor before entering the second stage circuit, and the noise is processed to obtain a better signal-to-noise ratio.

[0041] In order to drive the loudspeaker, the second stage amplifier circuit performs power amplification, and the amplification factor is determined by R16 and R19, and the amplification factor is about 33.

[0042] As shown in Figure 1 The two connecting mechanisms include two clamping pieces 9, which are slidingly connected to the two sides of the shell 1, and the two clamping pieces 9 are pressed on the lampshade 2 by the pressing mechanism. The two clamping pieces 9 are pressed on the lampshade 2 by the pressing mechanism, and the shell 1 will not be separated from the lampshade 2 by the friction force.

[0043] As shown in Figure 1 The pressing mechanism includes a spring 10, which is arranged between the clamping piece 9 and the shell 1, and the shell 1 is provided with a separation mechanism for separating the clamping piece 9 from the lampshade 2. The clamping piece 9 is pressed on the lampshade 2 by the elastic force of the spring 10 to generate a large friction force.

[0044] As shown in Figure 1 The separation mechanism includes a push rod 11, which is slidingly connected with the shell 1, one end of the push rod 11 is fixedly connected with the clamping piece 9, and the other end of the push rod 11 extends outside the shell 1. By pushing the push rod 11, the clamping piece 9 can slide against the elastic force of the spring 10, so that the clamping piece 9 and the lampshade 2 are separated, the friction force disappears, and the lampshade 2 is convenient to disassemble.

[0045] As shown in Figure 1 The two clamping pieces 9 and the lampshade 2 are provided with friction pads 13, which are fixedly connected with the clamping pieces 9. The friction pads 13 are made of soft rubber or silicone, and a large friction force can be generated by the pressing of the clamping pieces 9, so as to ensure the fixing effect of the lampshade 2.

[0046] As shown in Figure 1 The shell 1 is fixedly connected with a convex lens 14, which is arranged above the photodiode 6. The convex lens 14 can converge visible light on the photodiode 6, so as to realize the transmission effect of replacement.

[0047] Example 2

[0048] As shown in Figure 2As shown, the pressing mechanism comprises a threaded rod, the threaded rod penetrates through the shell 1 and the two clamping pieces 9, the threaded rod is rotationally connected with the shell 1, the two clamping pieces 9 are both threadedly connected with the threaded rod, and the thread rotation directions between the two clamping pieces 9 and the threaded rod are opposite. By means of the thread connection between the two clamping pieces 9 and the threaded rod, the threaded rod can drive the two clamping pieces 9 to slide when rotating.

[0049] It should be noted that in the foregoing description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other manners different from the description herein, therefore, the protection scope of the present application is not limited to the specific embodiments disclosed below.

Claims

1. A visible light communication based audio device comprising a housing (1), a transmitting module and a receiving module, characterized in that: Two said housings (1) are arranged, the transmitting module and the receiving module are arranged in the two housings (1) respectively, a lampshade (2) is arranged between the two housings (1), the transmitting module comprises an LED lamp (4), an input port (3) and an input circuit board (5), the LED lamp (4) and the input port (3) are connected on the input circuit board (5), the input circuit board (5) is fixedly connected on the housing (1), the LED lamp (4) passes through the housing (1) and enters the lampshade (2), the input port (3) penetrates the housing (1) to the outside, the receiving module comprises a photodiode (6), an output circuit board (7) and a loudspeaker (8), the loudspeaker (8) penetrates the housing (1) to the outside, the photodiode (6) penetrates the housing (1) to the lampshade (2), and the two housings (1) are detachably connected with the lampshade (2) through two groups of connecting mechanisms.

2. The visible light communication based audio device of claim 1, wherein: An amplification circuit module and a signal modulation module are arranged on the input circuit board (5).

3. The visible light communication based audio device of claim 1, wherein: The output circuit board (7) is provided with a preamplification module, a low-pass filter module and a power amplification module.

4. The visible light communication based audio device of claim 3, wherein: The two connecting mechanisms comprise two clamping pieces (9), the two clamping pieces (9) are slidingly connected on the two sides of the housing (1), and the two clamping pieces (9) are pressed on the lampshade (2) through a pressing mechanism.

5. The visible light communication based audio device of claim 4, wherein: The pressing mechanism comprises a spring (10), the spring (10) is arranged between the clamping piece (9) and the housing (1), and the housing (1) is provided with a separation mechanism for driving the clamping piece (9) to separate from the lampshade (2).

6. The visible light communication based audio device of claim 5, wherein: The separation mechanism comprises a push rod (11), the push rod (11) is slidingly connected with the housing (1), one end of the push rod (11) is fixedly connected with the clamping piece (9), and the other end of the push rod (11) extends outside the housing (1).

7. The visible light communication based audio device of claim 4, wherein: The pressing mechanism comprises a threaded rod, the threaded rod penetrates the housing (1) and the two clamping pieces (9), the threaded rod is rotationally connected with the housing (1), the two clamping pieces (9) are threadedly connected with the threaded rod, and the threads between the two clamping pieces (9) and the threaded rod are opposite in rotation direction.

8. The visible light communication based audio device of claim 4, wherein: Friction pads (13) are arranged between the two clamping pieces (9) and the lampshade (2), and the friction pads (13) are fixedly connected with the clamping pieces (9).

9. The visible light communication based audio device of claim 1, wherein: The housing (1) is fixedly connected with a convex lens (14), and the convex lens (14) is arranged above the photodiode (6).

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