CN211702029U - 2.4G, 5.2G, 5.8G wireless frequency band conversation system - Google Patents

Abstract

The utility model provides a 2.4G, 5.2G, 5.8G wireless frequency band conversation system, including MIC for picking up sound, DSP chip for noise reduction/echo cancellation processing, a first ADC conversion module for analog-digital conversion into digital signals, a wireless module for receiving digital signals of a secondary machine and simultaneously transmitting digital signals to the secondary machine, three DAC conversion modules for converting digital signals of the secondary machine into analog signals, a composite audio filter for combining analog signals converted by the three DAC conversion modules, a second ADC conversion module for converting analog signals of the three ADC conversion modules into digital signals, a digital power amplifier for converting digital signals of the second DAC conversion module into sound electric signals and a loudspeaker for converting electric signals of the digital power amplifier into sound, the utility model can use the automobile with isolation or conversation obstacle in front and back bins, it can also be used in isolated rooms or windows where a call is needed.

Description

2.4G, 5.2G, 5.8G wireless frequency band conversation system

Technical Field

The utility model relates to a speech system more specifically indicates a 2.4G, 5.2G, 5.8G wireless frequency channel speech system.

Background

The interphone is a two-way mobile communication tool, can be used for communication without any network support, has no telephone charge, and is suitable for occasions with relatively fixed and frequent communication. The existing interphone comprises a wired interphone and a wireless interphone, the communication system of the wireless interphone only can carry out one-way communication and cannot control the functions of other online auxiliary machines, the frequency of modulation of the interphone is too low, partial audio frequency can be lost in the wireless transmission process, the communication system of the wired interphone needs to be pre-provided with wires, the later-stage transformation difficulty or transformation cost is high, and the wired communication system is limited in use site.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at solves the problem that above-mentioned exists, provides a 2.4G, 5.2G, the wireless frequency channel speech system of 5.8G, and it is through unique structural design, the utility model discloses use 2.4G 5.2G 5.8G communication frequency channel to make wireless real-time two-way speech system (full duplex), also can one of them or two in the three frequency channel of exclusive use form the network deployment, speech system can a host computer to 1 ~ 3 auxiliary machines, and the host computer can be to all auxiliary machine broadcast conversations, and each auxiliary machine only talks to the host computer, can not converse between the auxiliary machine.

The utility model adopts the technical proposal that: A2.4G, 5.2G, 5.8G wireless frequency band communication system comprises a MIC for picking up sound, a DSP chip for noise reduction/echo cancellation processing, a first ADC conversion module for analog-digital conversion into digital signals, a wireless module for receiving digital signals of a secondary set and simultaneously transmitting the digital signals to the secondary set, three DAC conversion modules for converting the digital signals of the secondary set into analog signals, a composite audio filter for combining the analog signals converted by the three DAC conversion modules 50, a second ADC conversion module for converting the analog signals of the three ADC conversion modules into digital signals, a digital power amplifier for converting the digital signals of the second DAC conversion module into sound electric signals, and a loudspeaker for converting the electric signals of the digital power amplifier into sound, wherein the first ADC conversion module is connected between the DSP chip and the wireless module, the three DAC conversion modules are connected between the composite audio filter and the wireless module, the second ADC conversion module is connected between the composite audio filter and the DSP chip, and the digital power amplifier is connected between the loudspeaker and the DSP chip.

The 2.4G, 5.2G and 5.8G wireless frequency band communication system further comprises an indicator light unit connected with the wireless module, and the indicator light unit comprises an LED driver and five indicator lights.

The 2.4G, 5.2G and 5.8G wireless frequency band communication system further comprises a power supply unit, wherein the power supply unit comprises a lithium battery and a power circuit.

The MIC, the DSP chip, the first ADC conversion module, the three DAC conversion modules, the second ADC conversion module, the digital power amplifier, the indicator light unit and the power circuit are arranged on a PCB.

The wireless module, the loudspeaker and the lithium battery are electrically connected with the PCB.

The 2.4G, 5.2G and 5.8G wireless frequency band communication system further comprises a protective shell, wherein the protective shell comprises a face shell, a rear shell connected with the face shell and a pendant connected with the rear shell.

The face shell is provided with a switch, a loudspeaker face shield, a volume/call key and an LED lens hood.

The utility model has the advantages that: the utility model discloses use 2.4G 5.2G 5.8G communication frequency band to make wireless real-time two-way communication system (full duplex), also can one of them or two in the three frequency band of exclusive use form the network deployment, communication system can be a host computer to 1 ~ 3 auxiliary machines, the host computer can be to all auxiliary machine broadcast conversations, each auxiliary machine only to the host computer conversation, can not converse between the auxiliary machine.

The utility model discloses can use the car that has the isolation or have the conversation obstacle in front and back storehouse. It can also be used in isolated rooms or windows where a call is needed. The utility model contains a rechargeable battery and can be independently powered by an external power supply. The method is very convenient to be suitable for various complex scenes. The barrier-free communication distance between the main machine and the auxiliary machine can reach 30-50 meters.

The utility model discloses can use the car that has the isolation or have the conversation obstacle in front and back storehouse, also can be used in the isolation room or the window of needs conversation

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 2 together, the present invention provides a 2.4G, 5.2G, 5.8G wireless band communication system, which includes a MIC10 for picking up sound, a DSP chip 20 for noise reduction/echo cancellation, a first ADC conversion module 30 for analog-to-digital conversion into a digital signal, a wireless module 40 for receiving a digital signal of a slave and simultaneously transmitting the digital signal to the slave, three DAC conversion modules 50 for converting the digital signal of the slave into an analog signal, a composite audio filter 60 for combining the analog signals converted by the three DAC conversion modules 50, a second ADC conversion module 70 for converting the analog signal of the three ADC conversion modules into a digital signal, a digital power amplifier 81 for converting the digital signal of the second DAC conversion module into an audio signal, and a speaker 80 for converting the electrical signal of the digital power amplifier into sound, the first ADC conversion module 30 is connected between the DSP chip 20 and the wireless module 40, the three DAC conversion modules 30 are connected between the composite audio filter 60 and the wireless module 40, the second ADC conversion module 70 is connected between the composite audio filter 60 and the DSP chip 20, and the digital power amplifier 81 is connected between the speaker 80 and the DSP chip 20.

The 2.4G, 5.2G, 5.8G wireless band communication system further includes an indicator light unit 41 connected to the wireless module 40, where the indicator light unit 41 includes an LED driver 411 and five indicator lights 412.

The 2.4G, 5.2G, 5.8G wireless band communication system further includes a power supply unit 90, and the power supply unit 90 includes a lithium battery 91 and a power circuit 92.

The role of the composite audio filter 60 is that of signal compounding and low pass filtering.

The utility model discloses a quantity of MIC10 is two.

The utility model discloses a theory of operation does:

the two MICs pick up sound and then make the noise reduction and the echo cancellation processing for the DSP chip, then the sound signal after processing is sent to the first ADC conversion module, the sound signal is converted into a digital signal through the first ADC conversion module, then the digital signal converted by the first ADC is sent to the auxiliary machine through the wireless module, the digital signal sent by the auxiliary machine is simultaneously received by the wireless module and is sent to the two ADC conversion modules to be converted into an analog signal, the analog signal converted by the second ADC is subjected to signal compounding and low-pass filtering through the composite audio filter, then the analog signal is subjected to echo cancellation and volume size control through the DSP chip, then the sound signal is amplified through the digital power amplifier, and then the loudspeaker converts the audio signal transmitted by the auxiliary machine into sound.

The utility model completes the full double-function call function; the host can control the wireless functions of the auxiliary machine, such as starting up, standby and volume control.

The MIC10, the DSP chip 20, the first ADC conversion module 30, the three DAC conversion modules 50, the second ADC conversion module 70, the digital power amplifier 81, the indicator light unit 41, and the power circuit are disposed on a PCB a.

The wireless module 40, the speaker 80, and the lithium battery 91 are electrically connected to the PCB a.

The 2.4G, 5.2G, 5.8G wireless band communication system further includes a protective case 100, where the protective case 100 includes a face shell 101, a rear shell 102 connected to the face shell 101, and a pendant 103 connected to the rear shell 102.

The front case 101 is provided with a switch 101A, a speaker cover 101B, and a sound volume/call button 101C, LED light shield 101D.

The utility model discloses a wireless module for handle 2.4G 5.2G and 5.8G's radio signal's transmission and receipt, the utility model discloses use 2.4G 5.2G 5.8G communication frequency band to make wireless real-time two-way conversation system (full duplex). One or two of the three frequency bands can be independently used to form a networking, and the communication system can be provided with one host computer for 1-3 auxiliary computers. The main machine can broadcast the conversation to all the auxiliary machines, and each auxiliary machine can only converse to the main machine. The auxiliary machines can not communicate with each other.

The utility model discloses can use the car that has the isolation or have the conversation obstacle in front and back storehouse. It can also be used in isolated rooms or windows where a call is needed. The utility model contains a rechargeable battery and can be independently powered by an external power supply. The method is very convenient to be suitable for various complex scenes. The barrier-free communication distance between the main machine and the auxiliary machine can reach 30-50 meters.

The embodiments and drawings of the present invention are only for illustrating the design concept of the present invention, and the protection scope of the present invention should not be limited to this embodiment.

From the above, it can be seen that the objects of the present invention are efficiently attained. The part of the embodiments that illustrate the objectives and the functional and structural objects of the invention, and include other equivalents.

Accordingly, the invention is intended to cover other equally effective embodiments, as the scope of the appended claims will refer to.

Claims (7)

1. A2.4G, 5.2G, 5.8G wireless frequency band conversation system which characterized in that: the digital audio/video processing device comprises a MIC for picking up sound, a DSP chip for noise reduction/echo cancellation processing, a first ADC conversion module for analog-digital conversion into a digital signal, a wireless module for receiving a digital signal of a secondary machine and simultaneously transmitting the digital signal to the secondary machine, three DAC conversion modules for converting the digital signal of the secondary machine into the analog signal, a composite audio filter for compositing the analog signal converted by the three DAC conversion modules, a second ADC conversion module for converting the analog signal of the three ADC conversion modules into the digital signal, a digital power amplifier for converting the digital signal of the second DAC conversion module into a sound electric signal and a loudspeaker for converting the electric signal of the digital power amplifier into sound, wherein the first ADC conversion module is connected between the DSP chip and the wireless module, the three DAC conversion modules are connected between the composite audio filter and the wireless module, the second ADC conversion module is connected between the composite audio filter and the DSP chip, and the digital power amplifier is connected between the loudspeaker and the DSP chip.

2. The system of claim 1, further comprising an indicator light unit connected to the wireless module, wherein the indicator light unit comprises an LED driver and five indicator lights.

3. The system of claim 2, wherein the 2.4G, 5.2G, and 5.8G wireless band communication system further comprises a power supply unit, the power supply unit comprises a lithium battery and a power circuit.

4. The 2.4G, 5.2G, 5.8G wireless band communication system of claim 3, wherein the MIC, the DSP chip, the first ADC module, the three DAC modules, the second ADC module, the digital power amplifier, the indicator light unit, and the power circuit are disposed on a PCB.

5. The 2.4G, 5.2G, 5.8G wireless band phone system of claim 4 wherein the wireless module, the speaker, the lithium battery are electrically connected to the PCB.

6. The 2.4G, 5.2G, 5.8G wireless band communication system of claim 5, further comprising a protective case, wherein the protective case comprises a front case, a rear case connected to the front case, and a pendant connected to the rear case.

7. The system of claim 6, wherein the front cover comprises a switch, a speaker cover, a volume/call button, and an LED light shield.

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