CN105047114A - Tourism and conference broadcasting audio guide based on digital RF frequency-modulation technology - Google Patents
Tourism and conference broadcasting audio guide based on digital RF frequency-modulation technology Download PDFInfo
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- CN105047114A CN105047114A CN201510535478.9A CN201510535478A CN105047114A CN 105047114 A CN105047114 A CN 105047114A CN 201510535478 A CN201510535478 A CN 201510535478A CN 105047114 A CN105047114 A CN 105047114A
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Abstract
The invention discloses a tourism and conference broadcasting audio guide based on the digital RF frequency-modulation technology. The tourism and conference broadcasting audio guide comprises an ARM core board. The ARM core board comprises a 12C bus/12S bus, a serial peripheral interface, a universal programmable IO interface and an analog-digital conversion module/digital-analog conversion module. The input and output end of the ARM core board is connected with an audio encoder/decoder of the type of WM8988. One output end of the audio encoder/decoder is connected with an EAR voice output module. The other output end of the audio encoder/decoder is connected with a voice gain amplifying module. The MCU multi-line processor is used in cooperation with an AUDIO CODEC in the use process, and therefore the control capacity is improved, the development process is simplified, space cost is better saved, and the better denoising and tone quality processing effects of the AUDIO CODEC are added; an MCU is connected with RF, and therefore data transmission and verification can be better processed, data packets are prevented from being lost during transceiving, and the distance problem is better solved.
Description
Technical field
The present invention relates to a kind of tourism based on digital RF frequency modulation technology, meeting broadcast explanation device.
Background technology
In today of China Logistics industry develop rapidly, radio-frequency technique is with its distinctive advantage, and overcoming bar-code identification needs the shortcomings such as optical visible, decipherment distance are short, information can not be changed, and becomes the bright spot that logistics automatic identification field one is dazzling.Radio-frequency recognition system is made up of electronic tag, read write line two parts usually.Electronic tag is the real data carrier of radio-frequency recognition system, is placed on the article that need to identify.The development of radio-frequency technique, its product category is various, producer as world-renowned in TexasInstruments, Motorola, Phillips etc. all produces RFID product, their product respectively has feature, have series of one's own, its main technology and performance difference are mainly reflected in following several aspect: coupling scheme are different; Transmission frequency is different; Whether label is active; The technology realization rate of reading electronic labels data is different; Operating distance is different.According to the composition structure of electronic tag, electronic tag is divided into general storage-type, cryptographic storage type, band CPU type and supper-intelligent type etc., and according to different carrier frequencies, electronic tag is divided into ultra high frequency IC tag (1GHZ, 2.45GHZ5.8GHZ).
Along with the development of electrical application technology, increasing technology is applied to each field of life; Tourism given by numeral RF frequency modulation tourism broadcast explanation device, meeting brings better Consumer's Experience and the noise pollution reducing public place and bring, and allows tourism employee take leave of to tear sound to be roared down and leads team, stroke is informed tourist group harmony speak softly; The clamors of the people bubble up for convention, news briefing, and participant cannot understand the content that host says, the personnel that let on clearly know said content.
Summary of the invention
Technical matters to be solved by this invention is to provide and a kind ofly solves voice transfer, creates and reduce noise pollution environment, the tourism based on digital RF frequency modulation technology better improving Consumer's Experience, meeting broadcast explanation device.
The present invention is achieved through the following technical solutions: a kind of tourism based on digital RF frequency modulation technology, meeting broadcast explanation device, comprise an ARM core board, described ARM core board comprises a 12C bus/12S bus, Serial Peripheral Interface (SPI), general programmable I/O interface and analog-to-digital conversion module/D/A converter module;
The input/output terminal of ARM core board is connected to an audio codec, and the model of this audio codec is WM8988, the output termination EAR voice output module of audio codec, the signal input part of the output termination audio codec of EAR voice output module;
Another of audio codec exports termination one speech gain amplification module, and the signal output part of described speech gain amplification module connects the signal input part of audio codec.
As preferred technical scheme, the signal output part of described ARM core board connects a RF radio-frequency module, and the signal output part of RF radio-frequency module connects the signal input part of ARM core board.
As preferred technical scheme, described ARM core board is also connected to a control module, display module and power-supply battery administration module.
As preferred technical scheme, described control module comprises the function selection key for preference pattern, and described display module is digital display screen or LCD short in size screen.
As preferred technical scheme, the signal input output end of described speech gain amplification module is connected with the input/output terminal of MIC voice input module respectively.
As preferred technical scheme, the model of described ARM core board is SAMD20J16ARM core board.
As preferred technical scheme, described RF radio-frequency module is chip within CC1120,1Ghz.
As preferred technical scheme, the model of described speech gain amplification module is SSM2167MIC.
The invention has the beneficial effects as follows: the present invention with during MCU multithread processor increase AUDIOCODEC collocation, increase control ability, simplify development process, better saving space cost, increase AUDIOCODEC and better process noise reduction and acoustical quality, MCU and RF connects, better process data people transmission and verification, avoid receiving and dispatching lost data packets, better solve distance problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is system block diagram of the present invention.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, a kind of tourism based on digital RF frequency modulation technology of the present invention, meeting broadcast explanation device, comprise an ARM core board, described ARM core board comprises a 12C bus/12S bus, Serial Peripheral Interface (SPI), general programmable I/O interface and analog-to-digital conversion module/D/A converter module;
The input/output terminal of ARM core board is connected to an audio codec, and the model of this audio codec is WM8988, the output termination EAR voice output module of audio codec, the signal input part of the output termination audio codec of EAR voice output module;
Another of audio codec exports termination one speech gain amplification module, and the signal output part of described speech gain amplification module connects the signal input part of audio codec.
Wherein, the signal output part of ARM core board connects a RF radio-frequency module, and the signal output part of RF radio-frequency module connects the signal input part of ARM core board.
Wherein, ARM core board is also connected to a control module, display module and power-supply battery administration module; Control module comprises the function selection key for preference pattern, and described display module is digital display screen or LCD short in size screen.
In the present embodiment, the signal input output end of speech gain amplification module is connected with the input/output terminal of MIC voice input module respectively.
In the present embodiment, the model of ARM core board is SAMD20J16ARM core board; RF radio-frequency module is chip within CC1120,1Ghz; The model of speech gain amplification module is SSM2167MIC.
The present invention mainly adopts the digital RF frequency modulation tourism of the RF radio transceiver of below 1Ghz frequency (single merit, two merit), meeting broadcast explanation device, single merit is that a voice transmission is to more than two voice receivers, two merit is that two voice transmission exchange docking more than two phonetic incepting product devices, in building mansion, voice penetrate clear errorless real-time reception voice messaging within the scope of transmission range 100 meters, the spacious accessible voice transfer distance reception real-time voice that within reaching 350 meters of scopes, clear Zhe is errorless.Better solve voice transfer in tourism, meeting, create and reduce noise pollution environment, better improve Consumer's Experience.
12C bus is a kind of two-wire bi-directional serial data bus with multiterminal control ability, only requires two buses: a serial data line SDA, a serial time clock line SCL;
12S bus is the universal serial bus of special disposal digital audio signal, by voiceband data signal and clock signal divisional processing; 12S bus comprises three universal serial bus: select line (WS) and clock cable (SCK) with the serial data line (SD) of time division multiplex technology, byte.
The invention has the beneficial effects as follows: the present invention with during MCU multithread processor increase AUDIOCODEC collocation, increase control ability, simplify development process, better saving space cost, increase AUDIOCODEC and better process noise reduction and acoustical quality, MCU and RF connects, better process data people transmission and verification, avoid receiving and dispatching lost data packets, better solve distance problem.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (8)
1. device is explained in the tourism based on digital RF frequency modulation technology, meeting broadcast, it is characterized in that: comprise an ARM core board, described ARM core board comprises a 12C bus/12S bus, Serial Peripheral Interface (SPI), general programmable I/O interface and analog-to-digital conversion module/D/A converter module;
The input/output terminal of ARM core board is connected to an audio codec, and the model of this audio codec is WM8988, the output termination EAR voice output module of audio codec, the signal input part of the output termination audio codec of EAR voice output module;
Another of audio codec exports termination one speech gain amplification module, and the signal output part of described speech gain amplification module connects the signal input part of audio codec.
2. the tourism based on digital RF frequency modulation technology according to claim 1, meeting broadcast explanation device, it is characterized in that: the signal output part of described ARM core board connects a RF radio-frequency module, and the signal output part of RF radio-frequency module connects the signal input part of ARM core board.
3. the tourism based on digital RF frequency modulation technology according to claim 1, meeting broadcast explanation device, is characterized in that: described ARM core board is also connected to a control module, display module and power-supply battery administration module.
4. the tourism based on digital RF frequency modulation technology according to claim 3, meeting broadcast explanation device, is characterized in that: described control module comprises the function selection key for preference pattern, described display module is digital display screen or LCD short in size screen.
5. the tourism based on digital RF frequency modulation technology according to claim 1, meeting broadcast explanation device, is characterized in that: the signal input output end of described speech gain amplification module is connected with the input/output terminal of MIC voice input module respectively.
6. the tourism based on digital RF frequency modulation technology according to claim 1, meeting broadcast explanation device, is characterized in that: the model of described ARM core board is SAMD20J16ARM core board.
7. the tourism based on digital RF frequency modulation technology according to claim 2, meeting broadcast explanation device, is characterized in that: described RF radio-frequency module is chip within CC1120,1Ghz.
8. the tourism based on digital RF frequency modulation technology according to claim 1, meeting broadcast explanation device, is characterized in that: the model of described speech gain amplification module is SSM2167MIC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510535478.9A CN105047114A (en) | 2015-08-27 | 2015-08-27 | Tourism and conference broadcasting audio guide based on digital RF frequency-modulation technology |
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| CN201510535478.9A CN105047114A (en) | 2015-08-27 | 2015-08-27 | Tourism and conference broadcasting audio guide based on digital RF frequency-modulation technology |
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| US20030161477A1 (en) * | 2002-02-26 | 2003-08-28 | Wu David Chaohua | System and method of performing digital multi-channel audio signal decoding |
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