CN201100959Y - Bone induction audio bidirectional receiving/transmission device - Google Patents
Bone induction audio bidirectional receiving/transmission device Download PDFInfo
- Publication number
- CN201100959Y CN201100959Y CNU200720142637XU CN200720142637U CN201100959Y CN 201100959 Y CN201100959 Y CN 201100959Y CN U200720142637X U CNU200720142637X U CN U200720142637XU CN 200720142637 U CN200720142637 U CN 200720142637U CN 201100959 Y CN201100959 Y CN 201100959Y
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- playback
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Abstract
The utility model discloses a bone inductive audio frequency two-way transmitting-receiving device, which relates to the bone inductive sound-conducting technical field. The two-way transmitting-receiving device comprises an electromagnetic transition element which is used to transit bone vibration inductive signals and electromagnetic signals and also comprises a sound pickup and playback diplexer which is used to process sound pickup signals and playback signals, wherein a public end of the sound pickup and playback diplexer is connected with the electromagnetic transition element and is used to output the electromagnetic signals which are input in the electromagnetic transition element, an input end and an output end of the sound pickup and playback diplexer respectively output the sound pickup signals and input the playback signals, the sound pickup and playback diplexer, the electromagnetic transition element and a grounding end of a sound pickup signal source and a playback signal source are mutually connected, and the sound pickup and playback diplexer is a full-duplex diplexer which can simultaneously transmit sound pickup and playback signals and comprises a subtracter or an echo eliminator which can eliminate the playback signals in the sound pickup signals which are output.
Description
Technical field
The utility model relates to osteoinductive microphone device technology, the technology that particularly relates to a kind of bone induction audio frequency bidirectional transmitting/receiving device, promptly not only the transfer of vibration by vibrating membrane allows the user hear sound to skeletal structure, thereby vibration that the more important thing is skeletal structure when picking up user's sounding by vibrating membrane realizes that the pickup playback is in the function of the two-way acoustic R-T unit of one.
Background technology
The osteoinductive loud speaker in past has only been realized vocal function, has promptly only utilized the bone vibration can be delivered to the principle of cochlea, and its inductor has also only utilized the transfer principle of the signal of telecommunication to magnetic signal, is unidirectional therefore.
But in fact, the people is when sounding, and vocal cords can cause the bone vibration equally.Former, want to realize osteoinductive pickup, must adopt other structure, utilization neither the magnetoelectricity transfer principle.
As realizing two-way voice communication, the osteoinductive voice system in past must be installed two cover different devices, generally is osteoinductive loud speaker and conventional microphone, or osteoinductive loud speaker and osteoinductive pick-up, realizes two kinds of functions of sounding and pickup respectively.
For first kind of two way voice communication mode, be osteoinductive loud speaker and conventional microphone, it can't give full play to osteoinductive advantage, when sending voice, conventional microphone can send out ambient noise, because conventional microphone adopts air transmitted, must press close to user's mouth simultaneously, also hinder the activity of user's head to a certain extent.
For second kind of two way voice communication mode, promptly osteoinductive loud speaker and osteoinductive pick-up, owing to adopt two kinds of diverse parts of structure, difficulty of processing is big, total rate of finished products is low, the cost height, failure rate is also high.
And osteoinductive loud speaker in the past can not directly be used for realizing osteoinductive pickup, and its efficient and frequency bandwidth all are unacceptable.
The utility model content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of single, as to integrate the pickup playback osteoinductive device that uses, can not only conduct sound to the user, and can pick up the bone induction audio frequency bidirectional transmitting/receiving device of user's sounding.
The utility model the technical problem that will further solve provide a kind of be furnished with the efficient that can make pickup and playback and frequency bandwidth all reach balance, and can guarantee the osteoinductive pickup playback bidirectional transmitting/receiving device of the electromagnetic conversion element of pickup and playback tonequality.
In order to solve the problems of the technologies described above, a kind of bone induction audio frequency bidirectional transmitting/receiving device provided by the utility model comprises an electromagnetic conversion element, is used for the conversion of bone vibration induction signal and electromagnetic signal; Also comprise a pickup playback duplexer, be used to handle pickup and playback signal, the public end of described pickup playback duplexer is connected with electromagnetic conversion element, be used to export the electromagnetic signal of input electromagnetic conversion element, the output of described pickup playback duplexer, input are exported pickup signal and input playback signal respectively, and the earth terminal of described pickup playback duplexer, described electromagnetic conversion element, pickup signal source and playback signal source interconnects; Be provided with the pre-arcing road in the described pickup playback duplexer, be used to amplify the pickup signal of described electromagnetic conversion element output.
Further, described pickup playback duplexer is the duplexer that can transmit (processing) pickup and playback signal simultaneously of full duplex, comprises the full duplex signaling processing unit that can eliminate the playback signal of input in the pickup signal of output.
Further, described full duplex signaling processing unit comprises subtracter.
Further, described full duplex signaling processing unit comprises Echo Canceller DSP.
Further, described pickup playback duplexer is semiduplex transmission (processing) pickup of different time respectively and playback signal, comprises the half-duplex signal processing unit that can control output input pickup signal and playback signal.
Further, described half-duplex signal processing unit comprises the electronic switch by Artificial Control difference different time transmission pickup and playback signal.
Further, described electromagnetic conversion element comprises and is provided with the centered cylinder and the fixing yoke on island, the coil of hollow is enclosed within on the described centered cylinder at the bottom of being close to the cavity of yoke, permanent magnet is close to described hollow line snare on described centered cylinder, promptly is close to coil and permanent magnet for hollow in the yoke cavity from inside to outside successively; Vibrating membrane is installed on the described fixedly island; Oscillating plate is installed on the axis of the described vibrating membrane outside, and is fixed on the shell; Be provided with the gap between vibrating membrane and centered cylinder and the permanent magnet, vibrating membrane can be vibrated vertically.The duplexer circuit plate places in the described shell.
The bone induction audio frequency bidirectional transmitting/receiving device that utilizes the utility model to provide owing to adopt same electromagnetic conversion structure, realize the conversion (osteoinductive vocal function) of the signal of telecommunication to magnetic signal simultaneously, and magnetic signal is to the conversion (osteoinductive pickup function) of the signal of telecommunication; Promptly owing to use same structure to realize two kinds of functions simultaneously, cost significantly reduces, and difficulty of processing reduces, and rate of finished products improves, the also corresponding reduction of failure rate, and the user wears convenience and improves greatly;
Want to adopt same structure to realize playback and pickup function, must guarantee the tonequality of pickup and playback simultaneously.The utility model is by improving the magnet installation site, to place the radial position of induction coil to change axial location into, change vibrating membrane and oscillating plate material and coil parameter, make the efficient of pickup and playback and frequency bandwidth reach balance, thereby guaranteed both tonequality; Owing to adopt the pickup signal treatment circuit, faint pickup signal is amplified, guarantee enough signal to noise ratios.
Description of drawings
Fig. 1 is the profile of the electromagnetic conversion element of the utility model embodiment bone induction audio frequency bidirectional transmitting/receiving device;
Fig. 2 is the basic structure block diagram of the utility model embodiment bone induction audio frequency bidirectional transmitting/receiving device;
Fig. 3 is the basic principle block diagram of the utility model bone induction audio frequency bidirectional transmitting/receiving device embodiment;
Fig. 4 is the circuit diagram on the pre-arcing road of the utility model Fig. 3 embodiment;
Fig. 5 is first embodiment theory diagram of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device;
Fig. 6 is the electronic switch of the utility model Fig. 5 embodiment and the circuit diagram on pre-arcing road;
Fig. 7 is second embodiment theory diagram of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device;
Fig. 8 is the control circuit of the utility model Fig. 7 embodiment and the circuit diagram on pre-arcing road;
Fig. 9 is the 3rd an embodiment theory diagram of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device;
Figure 10 is the control circuit of the utility model Fig. 9 embodiment and the circuit diagram on pre-arcing road;
Figure 11 is first embodiment theory diagram of the full duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device;
Figure 12 is the circuit diagram on a kind of buffer circuit, subtracter and the pre-arcing road of the utility model Figure 11 embodiment;
Figure 13 is the circuit diagram on another kind of buffer circuit, subtracter and the pre-arcing road of the utility model Figure 11 embodiment;
Figure 14 is second embodiment theory diagram of the full duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection range of the present utility model in.
The electromagnetic conversion element of a kind of bone induction audio frequency bidirectional transmitting/receiving device that the utility model embodiment is provided, referring to shown in Figure 1, comprise and be provided with the centered cylinder 2 and the fixing yoke 1 on island 3, the coil 4 of hollow is enclosed within on the centered cylinder 2 at the bottom of being close to the cavity of yoke 1, permanent magnet 7 is close to hollow coil 4 and is enclosed within on the centered cylinder 2, promptly is close to coil 4 and permanent magnet 7 for hollow in yoke 1 cavity from inside to outside successively; Vibrating membrane 5 is fastened on fixedly on the island 3 by screw 8; Oscillating plate 6 is installed on vibrating membrane 5 outside axis, and is fixed on the shell 10 by screw 9; Be provided with the gap between vibrating membrane 5 and centered cylinder 2 and the permanent magnet 7, vibrating membrane 5 can be vibrated vertically.Duplexer circuit plate 11 places in the shell 10, near by yoke 1, centered cylinder 2, the fixing electromagnetic conversion unit that constitutes of island 3, coil 4, vibrating membrane 5, oscillating plate 6, permanent magnet 7 and screw 8.
Referring to shown in Figure 2, the bone induction audio frequency bidirectional transmitting/receiving device of the utility model embodiment comprises an electromagnetic conversion element, is used for the conversion of bone vibration induction signal and electromagnetic signal; Also comprise a pickup playback duplexer, be used to handle pickup and playback signal, the public end of described pickup playback duplexer is connected with electromagnetic conversion element, be used to export the electromagnetic signal of input electromagnetic conversion element, the output of described pickup playback duplexer, input are exported pickup signal and input playback signal respectively, and the earth terminal of described pickup playback duplexer, described electromagnetic conversion element, pickup signal source and playback signal source interconnects;
The described duplexer of this specification comprises the duplexer of full-duplex mode of pickup playback simultaneously and the duplexer of half-duplex operation that can only different time pickup playback;
Referring to shown in Figure 3, the principle of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end, and public end connects the output of output pickup signal through the pre-arcing road; Amplify in advance to faint pickup signal on described pre-arcing road, to reach effective transmission level, improves signal to noise ratio simultaneously.
Referring to shown in Figure 4, in the circuit on the pre-arcing road of the utility model Fig. 3 embodiment, amplifying triode Q11, time dividing potential drop base resistance R11, last dividing potential drop base resistance R12, collector resistance R13, emitter resistance R14, emitter capacitance C11 constitute amplifying circuit, connect output through coupling capacitance C22; In embodiment of the present utility model, integrated operational amplifier also can be adopted in described pre-arcing road, to obtain higher multiplication factor and performance; For power saving more and obtain more high s/n ratio, can also adopt field effect transistor to finish amplification.
Referring to shown in Figure 5, first embodiment principle of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end, public end connects the output of output pickup signal through electronic switch, pre-arcing road, electronic switch is established signal input end; Described electronic switch is selected wherein one the road to be connected to electromagnetic conversion unit in order to coordinate playback and pickup function, makes and has only playback or pickup work simultaneously, avoids harassing; Amplify in advance to faint pickup signal on described pre-arcing road, to reach effective transmission level, improves signal to noise ratio simultaneously.
Referring to shown in Figure 6, in the circuit on the pre-arcing road of the charged sub-switch of the utility model Fig. 5 embodiment, amplifying triode Q21, following dividing potential drop base resistance R21, last dividing potential drop base resistance R22, collector resistance R23, emitter resistance R24, emitter capacitance C21 constitutes amplifying circuit, connects output through coupling capacitance C22; Switch triode Q22, electrode resistance R25, control divider resistance R26 constitutes electronic switch; When PTT is low level, switch triode Q22 conducting; When PTT is high level, switch triode Q22 by.
Referring to shown in Figure 7, second embodiment principle of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end through control circuit, public end through the pre-arcing road, control circuit connects the output of output pickup signal, control circuit is established signal input end; Described control circuit is selected wherein one the road to be connected to electromagnetic conversion unit in order to coordinate playback and pickup function, makes and has only one tunnel playback or pickup work simultaneously, avoids harassing; Amplify in advance to faint pickup signal on the pre-arcing road, to reach effective transmission level, improves signal to noise ratio simultaneously.
Referring to shown in Figure 8, in the circuit on the pre-arcing road of the utility model Fig. 7 embodiment band control circuit, amplifying triode Q31, time dividing potential drop base resistance R31, last dividing potential drop base resistance R32, collector resistance R33, emitter resistance R34, emitter capacitance C31 constitute amplifying circuit, connect output through coupling capacitance C32; Pickup switch triode Q32, electrode resistance R35, control divider resistance R36 constitute the pickup electronic switch; Playback switch triode Q33, electrode resistance R37, control divider resistance R38, switch triode Q34, base resistance R39 constitutes the playback electronic switch.When signal input end PTT is low level, pickup switch triode Q32 conducting, playback switch triode Q33 by; When signal input end PTT was high level, pickup switch triode Q32 was by, playback switch triode Q33 conducting.
Referring to shown in Figure 9, the 3rd embodiment principle of the half-duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end through control circuit, public end connects the output of output pickup signal through control circuit, pre-arcing road, control circuit is established signal input end; Described control circuit is selected wherein one the road to be connected to electromagnetic conversion unit in order to coordinate playback and pickup function, makes and has only one tunnel playback or pickup work simultaneously, avoids harassing; Amplify in advance to faint pickup signal on the pre-arcing road, to reach effective transmission level, improves signal to noise ratio simultaneously.
Referring to shown in Figure 10, in the circuit on the pre-arcing road of the utility model Fig. 9 embodiment band control circuit, amplifying triode Q41, last dividing potential drop base resistance R41, following dividing potential drop base resistance R42, collector resistance R43, emitter resistance R44, emitter capacitance C41 constitute amplifying circuit, connect output through coupling capacitance C32; Pickup switch triode Q42, electrode resistance R45, control divider resistance R46 constitute the pickup electronic switch; Playback switch triode Q43, electrode resistance R47, control divider resistance R48, switching tube Q44, base resistance R49 constitute playback (oppositely) electronic switch; When signal input end PTT is low level, pickup switch triode Q42 conducting, playback switch triode Q43 by; When signal input end PTT was high level, pickup switch triode Q42 was by, playback switch triode Q43 conducting.
Referring to shown in Figure 11, first embodiment principle of the full duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end through buffer circuit, and public end connects the output of output pickup signal through subtracter, pre-arcing road; Described subtracter is used for the playback signal of the signal that will pick up from public end to be eliminated, and avoids harassing; The pre-arcing road offsets except the faint pickup signal behind the playback signal amplifies in advance, to reach effective transmission level, improves signal to noise ratio simultaneously.
Referring to shown in Figure 12, the utility model Figure 11 embodiment comprises in the full duplex circuit on buffer circuit, subtracter, pre-arcing road that subtraction amplifier U51, operational amplifier U52, first resistance R 51, second resistance R 52, the 3rd resistance R 53, the 4th resistance R 54, the 5th resistance R 55 constitute subtraction circuit; Buffering operational amplifier U53, the 6th resistance resistance R 56, the seven resistance R 57 constitute buffer circuit.Under the full-duplex mode, send into the playback signal of electromagnetic conversion unit and the pickup signal of sending of electromagnetic conversion unit and send into subtracter together, carry out subtraction with the playback signal (not comprising pickup signal) before the buffer, remove the playback signal, only keep pickup signal and send into the pre-arcing road.
Referring to shown in Figure 13, the utility model Figure 11 embodiment comprises in another full duplex circuit on buffer circuit, subtracter, pre-arcing road that subtraction amplifier U61, the first resistance resistance R 61, second resistance R 62, the 3rd resistance R 63, the 4th resistance R 64, the 5th resistance R 65 constitute subtraction circuit; Buffering operational amplifier U62, the 6th resistance resistance R 66, the seven resistance R 67 constitute buffer circuit; Under the full-duplex mode, send into the playback signal of electromagnetic conversion unit and the pickup signal of sending of electromagnetic conversion unit and send into subtracter together, carry out subtraction with the playback signal (not comprising pickup signal) before the buffer, remove the playback signal, only keep pickup signal and send into the pre-arcing road.
Referring to shown in Figure 14, second embodiment principle of the full duplex mode of the utility model bone induction audio frequency bidirectional transmitting/receiving device: the public end of duplexer is connected with electromagnetic conversion element, the input of duplexer input playback signal connects public end through buffer circuit, and public end is eliminated the output of DSP circuit, pre-arcing road connection output pickup signal through echo; Described echo is eliminated the playback signal that the DSP circuit is used for the signal that will pick up from public end and is eliminated, and avoids harassing; The pre-arcing road offsets except the faint pickup signal behind the playback signal amplifies in advance, to reach effective transmission level, improves signal to noise ratio simultaneously.
It all is prior art that pre-arcing road in the duplexer of the utility model bone induction audio frequency bidirectional transmitting/receiving device, electronic switch, control circuit, subtracter, buffer, echo are eliminated the DSP circuit; description in the foregoing description is just for open the utility model; be not limited to the utility model; those skilled in the art can both propose the variation of above-mentioned various circuit; and adopt the osteoinductive pickup playback bidirectional transmitting/receiving device of duplexer of the various circuit of these variations, all should list protection range of the present utility model in.
Claims (7)
1. a bone induction audio frequency bidirectional transmitting/receiving device comprises an electromagnetic conversion element, is used for the conversion of bone vibration induction signal and electromagnetic signal; It is characterized in that, also comprise a pickup playback duplexer, be used to handle pickup and playback signal, the public end of described pickup playback duplexer is connected with electromagnetic conversion element, be used to export the electromagnetic signal of input electromagnetic conversion element, the output of described pickup playback duplexer, input are exported pickup signal and input playback signal respectively, are provided with the pre-arcing road in the described pickup playback duplexer, are used to amplify the pickup signal of described electromagnetic conversion element output; The earth terminal of described pickup playback duplexer, described electromagnetic conversion element, pickup signal source and playback signal source interconnects.
2. bone induction audio frequency bidirectional transmitting/receiving device according to claim 1, it is characterized in that, described pickup playback duplexer is the duplexer that can transmit pickup and playback signal simultaneously of full duplex, comprises the full duplex signaling processing unit that can eliminate the playback signal of input in the pickup signal of output.
3. bone induction audio frequency bidirectional transmitting/receiving device according to claim 2 is characterized in that, described full duplex signaling processing unit comprises subtracter.
4. bone induction audio frequency bidirectional transmitting/receiving device according to claim 2 is characterized in that, described full duplex signaling processing unit comprises Echo Canceller DSP.
5. bone induction audio frequency bidirectional transmitting/receiving device according to claim 1, it is characterized in that, described pickup playback duplexer is semiduplex transmission pickup of different time respectively and playback signal, comprises the half-duplex signal processing unit that can control output input pickup signal and playback signal.
6. bone induction audio frequency bidirectional transmitting/receiving device according to claim 5 is characterized in that, described half-duplex signal processing unit comprises the electronic switch by Artificial Control difference different time transmission pickup and playback signal.
7. bone induction audio frequency bidirectional transmitting/receiving device according to claim 1, it is characterized in that, described electromagnetic conversion element comprises and is provided with the centered cylinder and the fixing yoke on island, the coil of hollow is enclosed within on the described centered cylinder at the bottom of being close to the cavity of yoke, and permanent magnet is close to described hollow line snare on described centered cylinder; Vibrating membrane is installed on the described fixedly island; Oscillating plate is installed on the axis of the described vibrating membrane outside, and is fixed on the shell; Be provided with the gap between vibrating membrane and centered cylinder and the permanent magnet; The duplexer circuit plate places in the described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720142637XU CN201100959Y (en) | 2006-06-28 | 2007-04-05 | Bone induction audio bidirectional receiving/transmission device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620043301.3 | 2006-06-28 | ||
| CN200620043301 | 2006-06-28 | ||
| CNU200720142637XU CN201100959Y (en) | 2006-06-28 | 2007-04-05 | Bone induction audio bidirectional receiving/transmission device |
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| Publication Number | Publication Date |
|---|---|
| CN201100959Y true CN201100959Y (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720142637XU Expired - Lifetime CN201100959Y (en) | 2006-06-28 | 2007-04-05 | Bone induction audio bidirectional receiving/transmission device |
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| CN (1) | CN201100959Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428593A (en) * | 2012-05-15 | 2013-12-04 | 华平信息技术股份有限公司 | Device for collecting audio signals based on loudspeaker |
| CN106549644A (en) * | 2015-09-17 | 2017-03-29 | 恩智浦有限公司 | Amplifier system |
| CN112740720A (en) * | 2018-09-11 | 2021-04-30 | 奥迪股份公司 | Method for operating a loudspeaker device simultaneously in a loudspeaker function and in a microphone function, and loudspeaker device |
-
2007
- 2007-04-05 CN CNU200720142637XU patent/CN201100959Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428593A (en) * | 2012-05-15 | 2013-12-04 | 华平信息技术股份有限公司 | Device for collecting audio signals based on loudspeaker |
| CN103428593B (en) * | 2012-05-15 | 2016-07-06 | 华平信息技术股份有限公司 | The device of audio signal is gathered based on speaker |
| CN106549644A (en) * | 2015-09-17 | 2017-03-29 | 恩智浦有限公司 | Amplifier system |
| CN112740720A (en) * | 2018-09-11 | 2021-04-30 | 奥迪股份公司 | Method for operating a loudspeaker device simultaneously in a loudspeaker function and in a microphone function, and loudspeaker device |
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