CN205121675U - Sound wave unblank device and system based on wiFi - Google Patents

Sound wave unblank device and system based on wiFi Download PDF

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Publication number
CN205121675U
CN205121675U CN201520871738.5U CN201520871738U CN205121675U CN 205121675 U CN205121675 U CN 205121675U CN 201520871738 U CN201520871738 U CN 201520871738U CN 205121675 U CN205121675 U CN 205121675U
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China
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sound wave
wifi
module
mcu module
unlocking apparatus
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CN201520871738.5U
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Chinese (zh)
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周强
王玉波
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Haixing Enterprise Development (shanghai) Co Ltd
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Haixing Enterprise Development (shanghai) Co Ltd
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Abstract

The utility model discloses a sound wave unblank device and system based on wiFi, the sound wave is unblanked the device and is included the MCU module, the power end and the voltage conversion module of MCU module link to each other, the network end and the continuous network password of receiving of wiFi module of MCU module, wherein, the input and the continuous sound wave password of receiving of sound wave collection module of MCU module, the output of MCU module links to each other with the drive circuit that unblanks and controls entrance guard's switching. The utility model provides a sound wave unblank device and system based on wiFi uses networking trick lock and sound wave lock through the combination, can satisfy the convenience that long -range mandate was unblanked, can improve the security and the reliability of the device of unblanking again greatly, and the user passes through the network application or owner's authorization can make the light room that gets into of visitor to the vexation of getting key and wait has been avoided.

Description

Based on sound wave unlocking apparatus and the system of WiFi
Technical field
The utility model relates to a kind of gate inhibition's unlocking apparatus and system, particularly relates to a kind of sound wave unlocking apparatus based on WiFi and system.
Background technology
Along with the development of internet, applications and Smart Home, network cipher is adopted to carry out unblanking to be applied widely.WiFi coded lock utilizes WiFi model calling to public network server, and mobile phone terminal communicates by obtaining with lock after binding or Network Capture authority, and the password of at every turn unblanking is not identical, even if unlocking cipher intercepts and captures is not afraid of yet.Utilize network defect of unblanking as follows: 1, the instability of network and network latency problems, just there will be the problem of not opening once network is obstructed.2, due to Internet Transmission, mobile phone terminal just can be unblanked in any place being connected into internet, user may not lock near time maloperation open lock.In addition, WiFi coded lock also has the insecurity be exposed under network.Therefore, be necessary to improve existing WiFi coded lock device and method for unlocking.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of sound wave unlocking apparatus based on WiFi and system, the convenience that remote authorization is unblanked can be met, greatly can improve again the safety and reliability of unlocking apparatus, user can make visitor easily enter room by network application or owner's authorization, thus avoids the worry of getting key and wait.
The utility model is solve the problems of the technologies described above the technical scheme adopted to be to provide a kind of sound wave unlocking apparatus based on WiFi, comprise MCU module, the power end of described MCU module is connected with voltage transformation module, the network-side of described MCU module is connected with WiFi module and receives network cipher, wherein, the input end of described MCU module is connected with sound wave acquisition module the Bomi code that quiets down, and the output terminal of described MCU module is connected with opening drive circuit access control opening and closing.
The above-mentioned sound wave unlocking apparatus based on WiFi, wherein, described sound collecting module comprises audio amplifier circuit, and the input end of described audio amplifier circuit is connected with microphone, and the output terminal of described MCU module is connected with opening drive circuit by optical coupling isolation circuit.
The above-mentioned sound wave unlocking apparatus based on WiFi, wherein, the output terminal of described audio amplifier circuit is connected with the input end of MCU module by dual operational amplifier.
The above-mentioned sound wave unlocking apparatus based on WiFi, wherein, described audio amplifier circuit comprises first crystal triode and the second transistor, the base stage of described first crystal triode is connected with microphone, the collector of described first crystal triode is connected with the base stage of the second transistor, the emitting electrode ground connection of described first crystal triode, the described emitter of the second transistor is connected with the input end of MCU module and passes through divider resistance ground connection, filtering circuit and overcurrent protection diode is connected with between the base stage of described second transistor and collector, the base stage of described first crystal triode is connected with voltage transformation module by pull-up resistor, the collector of described second transistor is connected with voltage transformation module.
The utility model also provides a kind of sound wave unlocking system based on WiFi for solving the problems of the technologies described above, comprise above-mentioned sound wave unlocking apparatus, the webserver and mobile terminal, described mobile terminal is mobile phone terminal or PAD terminal, described sound wave unlocking apparatus is connected with the described webserver by WiFi module and receives network cipher, described mobile terminal to be connected with the webserver by internet and to send network and to unblank request, and the loudspeaker on described mobile terminal is connected as sound wave sending module and sound collecting module on sound wave unlocking apparatus.
The utility model contrast prior art has following beneficial effect: the sound wave unlocking apparatus based on WiFi that the utility model provides and system, by combinationally using networking coded lock and sound wave lock, the convenience that remote authorization is unblanked can be met, greatly can improve again the safety and reliability of unlocking apparatus, user can make visitor easily enter room by network application or owner's authorization, thus avoids the worry of getting key and wait.
Accompanying drawing explanation
Fig. 1 is the sound wave unlocking system structural representation of the utility model based on WiFi;
Fig. 2 is the sound wave unlocking apparatus circuitry block schematic diagram of the utility model based on WiFi;
Fig. 3 is that the utility model is based on the sound collecting modular circuit block diagram in the sound wave unlocking apparatus of WiFi;
To be the utility model to unblank schematic flow sheet based on the sound wave of WiFi Fig. 4;
Fig. 5 is the sound wave unlocking apparatus specific works flow process schematic diagram of the utility model based on WiFi.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Fig. 1 is the sound wave unlocking system structural representation of the utility model based on WiFi.
Refer to Fig. 1, the sound wave unlocking apparatus based on WiFi that the utility model provides, comprise MCU module 1, the power end of described MCU module 1 is connected with voltage transformation module 2, the network-side of described MCU module 1 is connected with WiFi module 3 and receives network cipher, wherein, the input end of described MCU module 1 is connected with sound wave acquisition module 4 the Bomi code that quiets down, and the output terminal of described MCU module 1 is connected with opening drive circuit 5 access control opening and closing.
The utility model also provides a kind of sound wave unlocking system based on WiFi, comprise above-mentioned sound wave unlocking apparatus, the webserver 6 and mobile terminal 7, described mobile terminal 7 is mobile phone terminal or PAD terminal (panel computer), described sound wave unlocking apparatus is connected with the described webserver 6 by WiFi module 3, router and receives network cipher, described mobile terminal 7 to be connected with the webserver 6 by internet and to send network and to unblank request, and the loudspeaker on described mobile terminal 7 is connected as sound wave sending module and sound collecting module 4 on sound wave unlocking apparatus.
The utility model adopts mobile phone speaker sender ear cannot the ultrasonic transmission data of perception, has expanded cell-phone function when mobile phone does not add hardware facility, can all Android apple version highly versatiles of cross-platform uses support.Easy to use, without the need to pairing without the need to inputting password, than bluetooth WiFi more efficient quick, whole data transmission can realize at short several seconds.
The utility model adds sound wave recognition technology, and sound wave identification is a set of technical solution utilizing sound to realize the fast transport of file: adopt cross-platform technology, realizes any data that can send between sound wave and the smart machine receiving sound wave and transmits.The equipment supported comprises mobile phone, computer, single-chip microcomputer etc.Sonic transmissions has a very strong limitation to be exactly observability and closely property, and this characteristic compensate for the insecurity of network just; To unblank exactly face-to-face, thus security to be improved greatly.
Please continue see Fig. 2 and Fig. 3, the sound wave unlocking apparatus based on WiFi that the utility model provides, described sound collecting module 4 comprises audio amplifier circuit, the input end of described audio amplifier circuit is connected with microphone MK1, and the output terminal of described MCU module 1 is connected with opening drive circuit 5 by optical coupling isolation circuit U2.Because environment for use difference may be difficult to identify in a noisy environment, if the very large or sound continuously local disabler that may cause locking at sound.In addition, because different mobile phone outside speaker power is not quite similar, the mobile phone that some power is little will be pressed close to receiving end and could receive.In order to solve noise jamming problem and decipherment distance problem, the output terminal of described audio amplifier circuit is connected with the input end of MCU module after can considering to amplify by dual operational amplifier the volume received again.
Audio amplifier circuit of the present utility model comprises first crystal triode Q1 and the second transistor Q2, the base stage of described first crystal triode Q1 is connected with microphone, the collector of described first crystal triode Q1 is connected with the base stage of the second transistor Q2, the emitting electrode ground connection of described first crystal triode Q1, the emitter of described second transistor Q2 is connected with the input end of MCU module 1 and passes through divider resistance R2 ground connection, be connected with L1 and C2 between the base stage of described second transistor Q2 and collector and form filtering circuit and overcurrent protection diode D2, the base stage of described first crystal triode Q1 is connected with voltage transformation module 2 by pull-up resistor R1, the collector of described second transistor Q2 is connected with voltage transformation module 2.
12V power supply of the present utility model after VR17805 voltage stabilizing to 5V, to MCU module 1 and WiFi module for power supply.MCU module can adopt single-chip microcomputer U1 to realize.Amplified the clutter beyond the filtering circuit filtering 10kHz-22KHz that enough becomes through L1, C2 after MIC microphone collects sound by Q1 one-level, after amplifying through Q2 secondary, export to 9 pin of single-chip microcomputer U1.U3 is that WiFi chip is by serial ports and microcontroller communication.U1 to process after signal by 19 pin output low level unlocking signals, unblanks to the motor mechanism of mechanical lock through optocoupler U2 isolation and amplifier.
Because the capacitive reactance xc=2nfc of capacitor can raise with signal frequency and diminish, and the induction reactance xl=2f of inductor can raise with signal frequency and increase, if electric capacity, inductance are carried out parallel connection application, the impedance of their combinations also can change with signal frequency difference.Different filtering circuit can present very little or very large reactance to certain frequency signal allows this frequency signal pass through smoothly or to hold it back to pass through with activation, thus plays the effect choosing certain frequency signal and certain frequency signal of filtering.In circuit of the present utility model when 10KHz-20KHz high frequency by time lc circuit equal direct-connected VCC state, thus Q2 is normally worked, other frequencies by time LC be in block absorption state Q2 and do not work, single-chip microcomputer does not receive signal, plays filtering clutter function.
To be the utility model to unblank schematic flow sheet based on the sound wave of WiFi Fig. 4.
Please continue see Fig. 4, the sound wave unlocking system based on WiFi that the utility model provides, rate-determining steps of unblanking is as follows:
A) described mobile phone terminal sends network to the described webserver 6 and unblanks to ask and obtain sound wave password;
B) described mobile phone terminal unblanks to ask by mobile microphone reception voice, and is unblanked by voice to unblank to ask to sound wave unlocking apparatus transmission sound wave by mobile phone speaker after request harmony ripple cipher coding;
C) the described webserver carries out authentication to 6 mobile phone terminals, if by certification, the sound wave unlocking apparatus to correspondence sends out unlocking cipher;
D) described sound wave unlocking apparatus performs unlocking action after obtaining correct network cipher harmony Bomi code simultaneously.
The sound wave based on WiFi that the utility model provides is unblanked control method, and the described webserver 6 adopts rolling code mode to generate dynamic network cipher harmony Bomi code, and computation key is pressed some cycles and changed; After the webserver 6 sends out unlocking cipher to the sound wave unlocking apparatus of correspondence, reply confirmation signal of unblanking to described mobile phone terminal, so that user understands current unlocking condition in time.Data transmission adopts RS checking algorithm automatically can correct the error code of 20 percent.Cryptographic algorithm adopts carousel mechanism, mobile phone receives the clear text key of mobile phone terminal at every turn, specific password is generated by computing, the password that WiFi interlocking is subject to server generated, twice key authentication is passed through, and realizes WiFi and unblanks, and the key that sound wave is unblanked is different from WiFi starts key, when ending lock, system distributes unlock instruction next time automatically at every turn, and is synchronized to sound wave unlocking apparatus.
Mobile phone terminal software of the present utility model can detect ambient noise automatically, automatically increases or decreases loudspeaker emissive power at different environment, and receiving end is being decrypted computing after filtering out useless noise by LC filtering, and data stabilization is transmitted.For noise problem, the utility model can add fft algorithm in software and optimize further noise reduction, is expected to distance and can be increased to 1.5 meters-2 meters in squelch.
In order to solve disconnection, the WiFi module of described sound wave unlocking apparatus regularly sends heartbeat packet Sampling network connection status to the described webserver 6, such as WiFi module 3 adopts heartbeat packet to detect a presence every 5 seconds, the meeting automatic decision mistake place link if go offline also adopts different mechanism to reconnect, and specific works flow process as shown in Figure 5.No matter at networking state which signal when reception sound wave and networking command arrive first and all can wait for another signal, it is 1 minute (time can adjust size as required) that the stand-by period sets at present, and time-out abandons; Two orders all reach condition and send pulse to electric control lock.Consider the convenience of use, after sound wave unlocking apparatus obtains correct sound wave password, if wait for that network cipher is overtime and current network connection status exists fault, then perform unlocking action.
Although the utility model discloses as above with preferred embodiment; so itself and be not used to limit the utility model; any those skilled in the art; not departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when being as the criterion of defining with claims.

Claims (5)

1. the sound wave unlocking apparatus based on WiFi, comprise MCU module, the power end of described MCU module is connected with voltage transformation module, the network-side of described MCU module is connected with WiFi module and receives network cipher, it is characterized in that, the input end of described MCU module is connected with sound wave acquisition module the Bomi code that quiets down, and the output terminal of described MCU module is connected with opening drive circuit access control opening and closing.
2. as claimed in claim 1 based on the sound wave unlocking apparatus of WiFi, it is characterized in that, described sound collecting module comprises audio amplifier circuit, and the input end of described audio amplifier circuit is connected with microphone, and the output terminal of described MCU module is connected with opening drive circuit by optical coupling isolation circuit.
3., as claimed in claim 2 based on the sound wave unlocking apparatus of WiFi, it is characterized in that, the output terminal of described audio amplifier circuit is connected with the input end of MCU module by dual operational amplifier.
4. as claimed in claim 2 based on the sound wave unlocking apparatus of WiFi, it is characterized in that, described audio amplifier circuit comprises first crystal triode and the second transistor, the base stage of described first crystal triode is connected with microphone, the collector of described first crystal triode is connected with the base stage of the second transistor, the emitting electrode ground connection of described first crystal triode, the described emitter of the second transistor is connected with the input end of MCU module and passes through divider resistance ground connection, filtering circuit and overcurrent protection diode is connected with between the base stage of described second transistor and collector, the base stage of described first crystal triode is connected with voltage transformation module by pull-up resistor, the collector of described second transistor is connected with voltage transformation module.
5. the sound wave unlocking system based on WiFi, comprise sound wave unlocking apparatus, the webserver and mobile terminal, it is characterized in that, described sound wave unlocking apparatus is the sound wave unlocking apparatus based on WiFi described in any one of Claims 1 to 4, described mobile terminal is mobile phone terminal or PAD terminal, described sound wave unlocking apparatus is connected with the described webserver by WiFi module and receives network cipher, described mobile terminal to be connected with the webserver by internet and to send network and to unblank request, loudspeaker on described mobile terminal is connected as sound wave sending module and sound collecting module on sound wave unlocking apparatus.
CN201520871738.5U 2015-11-04 2015-11-04 Sound wave unblank device and system based on wiFi Active CN205121675U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105405188A (en) * 2015-11-04 2016-03-16 海星客企业发展(上海)有限公司 Ultrasonic unlocking device based on WiFi (Wireless Fidelity), ultrasonic unlocking system based on WiFi and control system thereof
CN108053537A (en) * 2017-12-29 2018-05-18 青岛云宿网络科技发展有限公司 Timeliness and number Off-line control system for unlocking are had based on sound wave communication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105405188A (en) * 2015-11-04 2016-03-16 海星客企业发展(上海)有限公司 Ultrasonic unlocking device based on WiFi (Wireless Fidelity), ultrasonic unlocking system based on WiFi and control system thereof
CN108053537A (en) * 2017-12-29 2018-05-18 青岛云宿网络科技发展有限公司 Timeliness and number Off-line control system for unlocking are had based on sound wave communication

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