CN104868933A - 5.8GHz frequency band-based audio transmitting and receiving device - Google Patents
5.8GHz frequency band-based audio transmitting and receiving device Download PDFInfo
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- CN104868933A CN104868933A CN201510023340.0A CN201510023340A CN104868933A CN 104868933 A CN104868933 A CN 104868933A CN 201510023340 A CN201510023340 A CN 201510023340A CN 104868933 A CN104868933 A CN 104868933A
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Abstract
The invention belongs to the 5.8G wireless radio frequency technology and audio coding and decoding technical field and relates to a 5.8GHz frequency band-based audio transmitting and receiving device. The 5.8GHz frequency band-based audio transmitting and receiving device includes a transmitting module and a receiving module; the transmitting module includes an audio data sampling chip, a 32-pin 5.8G main control chip, a power amplification control chip and a voltage converting chip; the receiving module includes an antenna, a radio frequency switch control chip, a 48-pin 5.8G main chip and a DAC converting chip 24; the transmitting module can be externally connected with an input device; the transmitting module and the receiving module are in communication link with each other through wireless code matching; and after receiving transmitted audio data and processing the data, the 48 pin 5.8G main chip converts the digital signals into analog signals and transmits the analog signals. With the 5.8GHz frequency band-based audio transmitting and receiving device adopted, higher-speed and less-interference audio data transmission can be provided, and point-to-point and one-point-to-multiple-point networking modes can be realized. According to the device, when 3.3V voltage and a power amplifier (PA) are provided, a measured distance can achieve more than 70 meters under power of 14dB in an open field.
Description
Technical field
The invention belongs to 5.8G wireless radio-frequency and audio encoding and decoding technique field, be specifically related to a kind of audio emission based on 5.8GHz frequency range and receiving system.
Background technology
Conventional 2.4GHz frequency range, it is large to there is interference in the voice communications such as 900M, the problems such as real-time is relatively poor.5.8GHz frequency range is higher than 2.4GHz frequency, an open ISM band, provides 3 the 100MHz U-NII national information infrastructure of licence (need not) frequency range and is used for High Bit-rate Wireless Data Communication.Because wireless 5.8GHz transmission technology is an opening, seldom by the frequency range used, only has the high-end wireless router of part, high end digital cordless telephone to use at present, so relative to 2.4GHz frequency range, 5.8GHz frequency range be one clean, the frequency range of few interference.
Common 5.8GHz wireless application mode adopts orthogonal frequency division multiplexi (OFDM), and point-to-multipoint and point-to-point networking mode, the speed of its single sector can reach 54Mbps.The direct sequence spread spectrum skill that the system of 5.8G generally adopts, comparatively multi-frequency is higher for its channel, so antijamming capability is eager to excel relatively.Simultaneously it can meet the needs that bandwidth applications supports a large number of users, namely 8 not overlapped channels make the extensibility of deployment and flexibility higher.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of audio emission based on 5.8GHz frequency range and receiving system, and it can provide more at a high speed, and the audio data transmission of few interference, can realize the networking mode of " point-to-point " and " point to multi--point " simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention specifically provides: a kind of audio emission based on 5.8GHz frequency range and receiving system, comprise transmitter module and receiver module, it is characterized in that: transmitter module comprises audio data samples chip, 32 pin 5.8G main control chips, power amplifier control chip and voltage conversion chip, receiver module comprises antenna, radio-frequency (RF) switch control chip, 48 pin 5.8G main control chips and DAC conversion chip, and transmitter module can external input equipment.
Transmitter module and receiver module carry out communication link by wireless to code.
The voice data that audio data samples chip Gather and input equipment sends, and to 32 pin 5.8G main control chip transmission.
32 pin 5.8G main control chips, after receiving the voice data sent, carry out transcoding process, and to the transmission of power amplifier control chip.
Power amplifier control chip after receiving the voice data that sends, after data are amplified, to receiver module transmission.
Voltage conversion chip is connected with power amplifier control chip, and provides 2V voltage to power amplifier control chip.
Radio-frequency (RF) switch control chip can the direction of control antenna.
Antenna is cross arrangement, and antenna receives the data that transmitter module sends over, and to 48 pin 5.8G main control chips.
48 pin 5.8G main control chips, after receiving the voice data sent, are tested, and decompress, and transmit DAC conversion chip, transmit after digital signal is converted into analog signal.
In the scheme optimized further, digital signal is converted into the data after analog signal to loudspeaker transmission.
In the scheme optimized further, loudspeaker is sound equipment or loudspeaker.
In the scheme optimized further, transmitter module is by line-in interface or link input equipment by microphone inlet.
In the scheme optimized further, input equipment is microphone, MP3, MP4, smart mobile phone, panel computer, notebook computer, desktop computer.
In the scheme optimized further, 1 transmitter module by the wireless mode to code simultaneously and 2 or more than 2 receiver module communication links.
After have employed technique scheme, the invention has the beneficial effects as follows:
Relative to the technical scheme disclosed, this device, when adopting 3.3V voltage and additional power amplifier (PA), at open field, records distance and can reach more than 70 meters under power 14dB.The pattern of this device can be used for " one-to-many " earphone or sound equipment etc.This device audio delay is at about 50ms, and theoretical value is 20ms.Higher real-time.
Accompanying drawing explanation
Fig. 1 audio data samples chip
Fig. 2 32 pin 5.8G main control chip
Fig. 3 power amplifier control chip
Fig. 4 voltage conversion chip
Fig. 5 antenna, radio-frequency (RF) switch control chip and 48 pin 5.8G main control chips
Fig. 6 DAC conversion chip
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
As shown in figure accompanying drawing 1 to accompanying drawing 6, a kind of audio emission based on 5.8GHz frequency range and receiving system, comprise transmitter module 1 and receiver module 2, it is characterized in that: transmitter module 1 comprise audio data samples chip 11,32 pin 5.8G main control chip 12, power amplifier control chip 13 and and voltage conversion chip 14, receiver module 2 comprises antenna 21, radio-frequency (RF) switch control chip 22,48 pin 5.8G main control chip 23 and DAC conversion chip 24, and transmitter module 1 can external input equipment.
Transmitter module 1 and receiver module 2 carry out communication link by wireless to code.
The voice data that audio data samples chip 11 Gather and input equipment sends, and transmit to 32 pin 5.8G main control chips 12.
32 pin 5.8G main control chips 12, after receiving the voice data sent, carry out transcoding process, and transmit to power amplifier control chip 13.
Power amplifier control chip 13, after receiving the voice data sent, after data being amplified, transmits to receiver module 2.
Voltage conversion chip 14 is connected with power amplifier control chip 13, and provides 2V voltage to power amplifier control chip 13.
Radio-frequency (RF) switch control chip 22 can the direction of control antenna 21.
Antenna 21 is in cross arrangement, and antenna receives the data that transmitter module 1 sends over, and to 48 pin 5.8G main control chips 23.
48 pin 5.8G main control chips 23, after receiving the voice data sent, are tested, and decompress, and transmit DAC conversion chip 24, transmit after digital signal is converted into analog signal.
On the basis of above-mentioned execution mode, digital signal is converted into the data after analog signal to loudspeaker transmission.
On the basis of above-mentioned execution mode, loudspeaker is sound equipment or loudspeaker.On the basis of above-mentioned execution mode, transmitter module 1 is by line-in interface or link input equipment by microphone inlet.
On the basis of above-mentioned execution mode, input equipment is microphone, MP3, MP4, smart mobile phone, panel computer, notebook computer or desktop computer.
On the basis of above-mentioned execution mode, this audio emission and receiving system specifically comprise transmitter module 1 and receiver module 2.As shown in accompanying drawing 1 to accompanying drawing 4, transmitter module 1 is by 1 audio data samples chip 11 (concrete model is ES7240), 1 32 pin 5.8G main control chip 12 (concrete model is main control chip BK5866), 1 power amplifier control chip 13 (concrete model is RFX5000), 1 voltage conversion chip 14 (concrete model is that 5V turns 2V voltage conversion chip QX3406AT) and peripheral circuit composition.
Transmitter module 1 pin illustrates: as shown in Figure 1, audio data samples chip 11 (ES7240) adopts 3V to power, and by AINR, AINL sampled audio data, then through chip internal process, output is connected with master chip by IIS.This chip M0, M1 pin, namely the 1st, 16 pin must be high could normal work.
As shown in Figure 2,32 pin 5.8G main control chip 12 (BK5866) Isosorbide-5-Nitraes, 10,11,20 pin are 3.3V power supply port, the 2nd, and 3 pin are 16MHZ brilliant battle array access pin, 5 to 8 pin is antennal interface, and the 9th pin is INTRA-CHIP POWER amplifier (PA) output pin, about 1.2V; 12 to 15,28 pin are burning mouth, and the 12 to 15 pin can also be used as I/O mouth; 16th pin is LBD pin; 18th, 19 is USB interface; 21st pin is resetting pin; 22 to 27 pin is I/O mouth, and the 23rd pin is used for LED and controls, and the 24 to 26 pin is IIS interface; 29th, 31,32 can not connect; 30th pin is 12MHZ output pin.
As shown in Figure 3, in power amplifier control chip 13 (RFX5000) circuit, RX, TX are used for the antenna output pin connecing 32 pin 5.8G main control chips 12 (BK5866); Chip power supply 2V, 2V power supply voltage available conversion chip 14 (QX3406AT) is transformed by 3.3V or 5V.
As shown in accompanying drawing 5 to accompanying drawing 6, receiver module 2 is by 1 48 pin 5.8G main control chip 23 (concrete model is BK5866), 1 DAC conversion chip 24 (concrete model is ES7134LV), 1 radio-frequency (RF) switch control chip 22 (concrete model is HWS408), antenna 21 and peripheral circuit composition.Antenna 21 is divided into two-way, in cross arrangement, can obtain better reception.
Receiver module 2 pin illustrates: as shown in Figure 5, and 48 pin 5.8G main control chip 23 (concrete model is BK5866) 1 to 4 pin are earphone access pin, and at present, receiver module 2 only employs 3, and 4 pin are used for lug machine; 5th pin is the brilliant battle array power supply port of 3.3V chip, the 6th, and 7 pin are 16MHz brilliant battle array access pin, the 8th, 14 pin are less radio-frequency RF power supply port, and the 9 to 12 pin is electric wire access port, and the 13rd pin is INTRA-CHIP POWER amplifier (PA), about 1.2V; 15th pin is 3V output pin, and the 16th pin is 3 to 5V input pin, and the 17th pin is AD button access port, the 18th, and 19 pin are that radio-frequency (RF) switch controls mouth, and the 20 to 23,41 pin are burning mouth; 24th pin LBD pin, can not connect; 25th, 26 pin, line related control pin; 27th pin is resetting pin; 28 to 40 pin is I/O mouth, can be used for external control; 37th, 38,40 pin can be used for IIS and control, external digital analog converter (DAC), processing audio data; 42nd, 43 pin, chip internal controls to use; 44th pin is 12MHz output pin, and the 47th, 48 is chip internal digital analog converter (DAC) Energy control pin 3.3V, and using internal digital analog converter (DAC) must power to it.
Present embodiment adopts BK5866 chip, and the kernel of this chip ARM9, is integrated with 5.8G radio-frequency technique, is the chip of a high integration, and comparing other similar 5.8G chips more has price advantage.
On the basis of above-mentioned execution mode, the large function of this device one is the audio data transmission that can realize " drag many " or " point to multi--point ", and namely 1 transmitter module 1 is by the while of the wireless mode to code and 2 or more than 2 receiver module 2 communication links.
As known by the technical knowledge, the technical program can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (6)
1. the audio emission based on 5.8GHz frequency range and receiving system, comprise transmitter module (1) and receiver module (2), it is characterized in that: described transmitter module (1) comprises audio data samples chip (11), 32 pin 5.8G main control chips (12), power amplifier control chip (13) and voltage conversion chip (14), described receiver module (2) comprises antenna (21), radio-frequency (RF) switch control chip (22), 48 pin 5.8G main control chips (23) and DAC conversion chip (24), described transmitter module (1) can external input equipment,
Described transmitter module (1) and receiver module (2) carry out communication link by wireless to code;
The voice data that described audio data samples chip (11) Gather and input equipment sends, and transmit to 32 pin 5.8G main control chips (12);
Described 32 pin 5.8G main control chips (12), after receiving the voice data sent, carry out transcoding process, and transmit to power amplifier control chip (13);
Described power amplifier control chip (13), after receiving the voice data sent, after data being amplified, is transmitted to receiver module (2);
Described voltage conversion chip (14) is connected with power amplifier control chip (13), and provides 2V voltage to power amplifier control chip (13);
Described radio-frequency (RF) switch control chip (22) can the direction of control antenna (21);
Described antenna (21) is in cross arrangement, and it receives the data that transmitter module (1) sends over, and to 48 pin 5.8G main control chips (23);
Described 48 pin 5.8G main control chips (23), after receiving the voice data sent, are tested, and decompress, transmit described DAC conversion chip (24), transmit after digital signal is converted into analog signal.
2. audio emission according to claim 1 and receiving system, is characterized in that: described digital signal is converted into the data after analog signal to loudspeaker transmission.
3. audio emission according to claim 2 and receiving system, is characterized in that: described loudspeaker is sound equipment or loudspeaker.
4. audio emission according to claim 1 and receiving system, is characterized in that: described transmitter module (1) is by line-in interface or link input equipment by microphone inlet.
5. audio emission according to claim 4 and receiving system, is characterized in that: described input equipment is microphone, MP3, MP4, smart mobile phone, panel computer, notebook computer, desktop computer.
6. audio emission according to claim 1 and receiving system, is characterized in that: described 1 transmitter module (1) by the wireless mode to code simultaneously and 2 or more than 2 receiver modules (2) communication link.
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| CN201510023340.0A CN104868933A (en) | 2015-01-09 | 2015-01-09 | 5.8GHz frequency band-based audio transmitting and receiving device |
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| CN201510023340.0A CN104868933A (en) | 2015-01-09 | 2015-01-09 | 5.8GHz frequency band-based audio transmitting and receiving device |
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| CN106464289A (en) * | 2015-11-04 | 2017-02-22 | 深圳博芯科技股份有限公司 | A 5.8 G long-distance wireless data transmission system |
| CN106604185A (en) * | 2015-10-13 | 2017-04-26 | 宁夏琪凯节能设备有限公司 | Energy-saving wireless stereo sound equipment |
| WO2017132831A1 (en) * | 2016-02-02 | 2017-08-10 | 青勇 | Pair of multi-audio control systems based on wireless transmission technology |
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Application publication date: 20150826 |
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