CN202634447U - Information exchange system based on audio frequency - Google Patents
Information exchange system based on audio frequency Download PDFInfo
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- CN202634447U CN202634447U CN 201220256362 CN201220256362U CN202634447U CN 202634447 U CN202634447 U CN 202634447U CN 201220256362 CN201220256362 CN 201220256362 CN 201220256362 U CN201220256362 U CN 201220256362U CN 202634447 U CN202634447 U CN 202634447U
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Abstract
The utility model relates to an information processing technology and particularly relates to an indoor high-precision information exchange system based on an audio frequency, which is used within a small range. The specific scheme is as follows: the information exchange system consists of an audio transmitting device, a mobile terminal and a server, wherein the audio transmitting device is installed at a specific position and is used for transmitting an audio signal which contains an equipment code and a position identification code and is modulated in advance, an existing microphone on the mobile terminal is used for receiving the audio frequency and decoding the audio frequency into the equipment code and the position code which are sent to the server through a mobile network, and the server obtaining the codes instantly sends position service information to the mobile terminal. The information exchange system has the advantages of safety, reliability and high anti-counterfeiting property, a mobile terminal user can realize positioning and obtain surrounding service information at any time, the information exchange system has low requirements on hardware configuration of the mobile terminal, all mobile terminals can receive the audio signals, and the construction cost of the audio transmitting device is low, so that the information exchange system is suitable for large-scale generalization and popularization.
Description
Technical field
The utility model relates to the information processing technology, is specifically related to a kind of indoor high-precision among a small circle Information Exchange System based on audio frequency.
Background technology
Along with the development of ICT and popularizing of smart mobile phone, the location technology of portable terminal also is development in pluralism trend, and this gives carrying out of location-based service and expansion has brought infinite commercial opportunities.So-called location-based service (LBS; Location Based Services) claims positioning service again; Be meant cooperation through portable terminal and mobile network; Confirm mobile subscriber's actual geographical position, thereby the needed information on services relevant with the position of user and a kind of form of reward on total mark are provided.
At present; The location technology of portable terminal mainly comprises: reach the location based on modes such as GPS, NFC (close range wireless communication), RFID (REID), WIFI focus, bluetooth or mobile phone two-dimension codes; Yet all there is certain weak point in above-mentioned location technology in commerce is used, wherein GPS can't be implemented in indoor hi-Fix; All there is the necessary hardware infrastructural support in the location of NFC and RFID, and schemes such as transformation of the way mobile phone increase chip obviously are unfavorable for the universality and the convenience of commercial application; WIFI focus location technology is faced with shortcomings such as the focus construction cost is higher, the hardware supports rate is lower, and there is this kind problem equally in described bluetooth location technology; And the mobile phone two-dimension code location is to obtain geography information through the recognition of the camera on portable terminal two-dimension code, so have high requirement for the shooting pixel of mobile phone, does not have universal applicability equally.
According to the disclosed a kind of portable terminal ultrasonic communication system and method for number of patent application " 201110287685.9 "; This system mainly comprises supersonic generator and portable terminal; This portable terminal receives ultrasonic wave and therefrom demodulates the geographic information data that presets, thereby reaches the purpose of location.The weak point of this invention is that portable terminal can only demodulate the data that are preset in advance in the supersonic generator; Can't obtain data such as up-to-date information on services and integration in real time; And according to market survey, have only the microphone of part of cell phone can receive ultrasonic signal at present, major part can't receive high-frequency ultrasonic signal; Therefore adopt the ultrasonic signal location to have the hardware threshold equally, unsuitable business-like application popularization.
In sum, existing location technology exist equipment cost high, arrange constant, be unfavorable for popularizing and the problem of fail safe shortcoming, so everybody is seeking new technical solution.
Summary of the invention
The purpose of the utility model is the weak point according to above-mentioned prior art; A kind of Information Exchange System based on audio frequency is provided; This Information Exchange System receives the audio signal that presets device coding and position code that audio emitting device is outwards launched through the existing microphone on the portable terminal; And be decoded into device coding and position encoded through the demodulation module in the portable terminal and send to carry out the geographical position checking to server; Push the information on services relevant through server to portable terminal simultaneously, to reach location-based service based on the audio frequency location with this geographical position.
The utility model purpose realizes being accomplished by following technical scheme:
A kind of Information Exchange System based on audio frequency is characterized in that described Information Exchange System mainly comprises audio emitting device, portable terminal and server; Described audio emitting device is made up of processor, audio frequency amplifier and audio frequency transmitter unit; Described each audio emitting device is equipped with different device codings and position code, and described processor inside is provided with the setting that encrypting module is used for encrypt relation between device coding and the position code; Described portable terminal is built-in with the demodulation module of audio signal; Wherein said demodulation module is provided with audio signal sample mouth and data output, and described audio signal sample mouth links to each other with the existing microphone of said portable terminal, and described data output links to each other with the existing wireless network module of said portable terminal; Described server is connected through wireless network with described existing wireless network module.
Be provided with the decipher function piece in the described demodulation module, be used for encrypt relation between Authentication devices coding and the position code.
Described processor is provided with an external communication interface.
Be provided with the mos pipe between described audio frequency amplifier and the audio frequency transmitter unit, be used to amplify said audio signal.
Described processor set inside has memory, and this memory inside stores described device coding and position code, and through being arranged on I/O mouth or the D/A conversion mouthful audio signal that output modulates on the processor.
Described audio frequency transmitter unit is an electroacoustic transducer.
Be provided with memory in the described server, this store memory contains information packet, be used for and said portable terminal between information exchange.
Be provided with counting module in the described server, be used to add up the portable terminal quantity that receives the audio emitting device signal.
Described portable terminal can be mobile phone, panel computer or notebook computer.
The utility model has the advantages that; The safe and reliable antifalsification of Information Exchange System is high; Peripheral information on services can located and obtain to mobile phone users at any time, and is low for the Hardware configuration requirement of portable terminal, but the equal received audio signal of all portable terminals; The audio emitting device construction cost is low, and suitable large-scale promotion is popularized.
Description of drawings
Fig. 1 is the Information Exchange System sketch map of the utility model;
Fig. 2 is the audio frequency amplifier fundamental diagram of the utility model;
Fig. 3 is the audio frequency emission flow chart of the utility model;
Fig. 4 is the preferred audio frequency amplifier fundamental diagram of the utility model.
Embodiment
Through embodiment characteristic and other correlated characteristic of the utility model are done further explain below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
Like Fig. 1-4, mark 1-4 is respectively among the figure: portable terminal 1, audio emitting device 2, server 3, microphone 4.
Embodiment 1: as shown in Figure 1, present embodiment relates to the information processing technology, is specifically related to a kind of Information Exchange System based on audio frequency.This Information Exchange System mainly is made up of portable terminal 1, audio emitting device 2 and server 3.Each audio emitting device 2 all is assigned different device codings and position code, has specific cryptographic calculation relation between these two codings.When audio emitting device 2 outwards sends the audio signal of the information of presetting; Existing microphone 4 on the portable terminal 1 receives this audio signal; And accomplish the decoding of audio signal through a demodulation module; Thereby learn the position encoded of audio emitting device 2; Thereafter portable terminal 2 is position encoded to server 3 transmissions through wireless network or mobile communications network, obtains position encoded server 3 instant information on services to portable terminal 1 propelling movement positional information and this position periphery, and adds up flow of the people every day of each trade company through server 3 interior counting modules.
The concrete course of work of audio emitting device 2 is following: at first said processor is realized digital signal (being described device coding and position code) is modulated on the audio signal of a 15.8KHz through internal arithmetic, and with I/O mouth or the D/A conversion mouthful output of this signal that modulates through self; Thereafter the said signal that modulates amplifies and output through audio frequency amplifier, in order to promote the outside audio signals of described audio frequency transmitter unit.Audio signal after wherein said audio frequency amplifier will be modulated is amplified and is finally realized recommending output through the mos pipe.Described audio frequency transmitter unit is an electroacoustic transducer, can be electro-acoustic conversion devices such as electromagnetic loudspeaker, piezo buzzer, piezo-electric loudspeaker, electrostatic loudspeaker.
As shown in Figure 2; The concrete operation principle of said audio frequency amplifier is: the said 15.8khz CF signal that needs emission is through the separated in-phase input end that directly is coupled to TDA2030 of 1u electric capacity; 22k resistance and 680 resistance have determined that the multiplication factor of this circuit is 33.4 times; Audio signal after the amplification sends thereby promote loud speaker from the 4 pin output of TDA2030.Wherein, VCC=+15V, VSS=-15V, the effect that is connected to the electric capacity of 0.1u and 100u on VCC and the VSS is a power filter and move back lotus root.The effect of two 4001 diodes is to realize output violent change.1 Ohmic resistance parallelly connected with loud speaker and 0.1u electric capacity are typical self-maintained circuits of eliminating.
As shown in Figure 3; Software flow pattern for the emission of present embodiment audio frequency; Behind the single-chip microcomputer electrification reset in the audio emitting device 2, at first carry out initialization, export the device coding of 8 bytes then through the PWM mouth; And then export the position encoded of 8 bytes then, wait for that at last 300ms begins transmitting apparatus coding and position encoded circulation once more after the time.
Described demodulation module at first collects ultrasonic signal through microphone existing on the portable terminal 14; And through the special operation method of deciphering module utilization with audio signal decoding to obtain device coding and position encoded; And checking apparatus coding and position encoded checking relation; Promptly carry out the DES deciphering; If device coding and position encoded has correct DES operation relation, then this software sends these two codings through wireless network module existing in the portable terminal 1 to long-range server 3, is complementary with the information packet that is stored in it after position encoded accurately when server 3 obtains; Call and these position encoded relevant data, and to the portable terminal 1 instant information on services that pushes positional information and this position periphery.Below be the concrete reception flow process of portable terminal:
1. memory is accepted in initialization, distributes 16 bytes of memory spaces, and all puts 0;
2. begin received ultrasonic signal;
3. open timer, receive the voice data of 400ms;
4. analyze the data that receive,, seek the starting point of decoding to be basis for estimation greater than 100ms.Found just as the decoding that begins to carry out 16 bytes;
5. the data of preceding 8 bytes of decoded data are carried out the DES computing with the key that is stored in the equipment, if the data that obtain are with decode position encoded consistent then accomplish reception process one time;
6. otherwise jump to 2 and restart.
Present embodiment has been realized indoor location among a small circle preferably through audio emitting device 2 and server 3.
Embodiment 2: be illustrated in figure 4 as the preferred audio frequency amplifier fundamental diagram of the utility model, through the digital switch device, for example 4069 circuit such as grade are realized a differential driving, and its concrete operation principle is following:
1. the data modulated signal that need amplify is from the 13 pin input of U1F;
2. 11 pin that once about 10 times inverse analog amplifies and be sent to U1E have been accomplished through U1F;
3. U1E is operated under the on off state, has realized a signals reverse effect;
4. U1A and U1B have accomplished the homophase amplification of signal;
5. U1C and U1D have accomplished the anti-phase amplification of signal;
6. LS1 is a piezoelectric ceramic loudspeaker, by the digital differential drives of U1A, U1B and U1C, U1D formation;
7. R111 and R112 are in order to improve high level promotion ability and to be provided with.
Claims (9)
1. the Information Exchange System based on audio frequency is characterized in that described Information Exchange System mainly comprises audio emitting device, portable terminal and server; Described audio emitting device is made up of processor, audio frequency amplifier and audio frequency transmitter unit, and described each audio emitting device is equipped with different device codings and position code, and described processor inside is provided with encrypting module; Described portable terminal is built-in with the demodulation module of audio signal; Wherein said demodulation module is provided with audio signal sample mouth and data output, and described audio signal sample mouth links to each other with the existing microphone of said portable terminal, and described data output links to each other with the existing wireless network module of said portable terminal; Described server is connected through wireless network with described existing wireless network module.
2. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that being provided with in the described demodulation module decipher function piece.
3. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that described processor is provided with an external communication interface.
4. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that being provided with drive circuit between described audio frequency amplifier and the audio frequency transmitter unit, is used to amplify said audio signal.
5. a kind of Information Exchange System according to claim 1 based on audio frequency; It is characterized in that described processor set inside has memory; This memory inside stores described device coding and position code, and through being arranged on I/O mouth or the D/A conversion mouthful audio signal that output modulates on the processor.
6. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that described audio frequency transmitter unit is an electroacoustic transducer.
7. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that being provided with memory in the described server, and this store memory contains information packet, be used for and said portable terminal between information exchange.
8. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that being provided with counting module in the described server, is used to add up the portable terminal quantity that receives the audio emitting device signal.
9. a kind of Information Exchange System based on audio frequency according to claim 1 is characterized in that described portable terminal can be mobile phone, panel computer or notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256362 CN202634447U (en) | 2012-06-01 | 2012-06-01 | Information exchange system based on audio frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256362 CN202634447U (en) | 2012-06-01 | 2012-06-01 | Information exchange system based on audio frequency |
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| CN202634447U true CN202634447U (en) | 2012-12-26 |
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| CN 201220256362 Expired - Fee Related CN202634447U (en) | 2012-06-01 | 2012-06-01 | Information exchange system based on audio frequency |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103269A (en) * | 2014-06-30 | 2014-10-15 | 上海科泰信息技术有限公司 | Audio identification electronic tag |
| CN104683947A (en) * | 2014-12-19 | 2015-06-03 | 上海虎符通信科技股份有限公司 | Acoustic wave-based indoor positioning method and business information pushing method |
| CN110636119A (en) * | 2019-09-05 | 2019-12-31 | 北京无限光场科技有限公司 | Information pushing method and device based on sound wave identification, electronic equipment and medium |
| CN110636133A (en) * | 2019-09-25 | 2019-12-31 | 上海动听网络科技有限公司 | Method, device, terminal, server and system for assisting accurate positioning |
| CN110704670A (en) * | 2019-09-30 | 2020-01-17 | 上海动听网络科技有限公司 | Information display method, system, server and display terminal |
| CN111405451A (en) * | 2020-03-13 | 2020-07-10 | 深圳市明信测试设备有限公司 | Mobile phone MIC function test system |
| CN112700707A (en) * | 2020-12-28 | 2021-04-23 | 中孚安全技术有限公司 | Data transmission education demonstration system and method based on sound card |
-
2012
- 2012-06-01 CN CN 201220256362 patent/CN202634447U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103269A (en) * | 2014-06-30 | 2014-10-15 | 上海科泰信息技术有限公司 | Audio identification electronic tag |
| CN104683947A (en) * | 2014-12-19 | 2015-06-03 | 上海虎符通信科技股份有限公司 | Acoustic wave-based indoor positioning method and business information pushing method |
| CN110636119A (en) * | 2019-09-05 | 2019-12-31 | 北京无限光场科技有限公司 | Information pushing method and device based on sound wave identification, electronic equipment and medium |
| CN110636133A (en) * | 2019-09-25 | 2019-12-31 | 上海动听网络科技有限公司 | Method, device, terminal, server and system for assisting accurate positioning |
| CN110704670A (en) * | 2019-09-30 | 2020-01-17 | 上海动听网络科技有限公司 | Information display method, system, server and display terminal |
| CN111405451A (en) * | 2020-03-13 | 2020-07-10 | 深圳市明信测试设备有限公司 | Mobile phone MIC function test system |
| CN112700707A (en) * | 2020-12-28 | 2021-04-23 | 中孚安全技术有限公司 | Data transmission education demonstration system and method based on sound card |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150925 Address after: 200040, room 2588, 601-6 Changyang Road, Shanghai, Yangpu District Patentee after: SHANGHAI DIANSHA NETWORK TECHNOLOGY CO., LTD. Address before: 200040 Shanghai City, Jingan District Changde Road 788 Lane 5, room 101 Patentee before: Shanghai monarch's dagger-axe network technology company limited |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20170601 |