CN201216021Y - Digital contact type vibration acoustic pickup - Google Patents
Digital contact type vibration acoustic pickup Download PDFInfo
- Publication number
- CN201216021Y CN201216021Y CNU2008200478668U CN200820047866U CN201216021Y CN 201216021 Y CN201216021 Y CN 201216021Y CN U2008200478668 U CNU2008200478668 U CN U2008200478668U CN 200820047866 U CN200820047866 U CN 200820047866U CN 201216021 Y CN201216021 Y CN 201216021Y
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- shell
- digital
- polar plate
- wiring board
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Abstract
The utility model relates to a digital contact type vibration pickup, which comprises a shell with a containing cavity, a vibration diaphragm group with a metal clad layer, a hollow gasket, a back polar plate, a back polar plate seat, a conductive connecting frame and a circuit board, wherein the vibration diaphragm group and the back polar plate are orderly flatly arranged in the cavity of the shell, the back polar plate is inlaid in the back polar plate seat, the conductive connecting frame is arranged on one end surface in the back polar plate to contact with the back polar plate to electrically connect, the other end surface of the conductive connecting frame is in contact with a circuit board group to electrically connect, the outer edge of the circuit board group is matched with an opening of the cavity of the shell, the shell is matched to form cylindrical shell space through the circuit board group, and a digital signal conversion circuit is arranged on the circuit board. Original output simulation audio signals can be converted into a digital type pulse signal format to transfer by using the digital signal conversion circuit, thereby achieving the purpose that an electret capacitor microphone has digital transmission signals.
Description
Technical field
The utility model relates to a kind of vibration pickup, refers in particular to a kind of digital contact vibration pickup.
Background technology
Tradition electret vibration pickup system output simulated audio signal, it is transferred in the process of codec by shielded cable, can because of and being equal to of surrounding enviroment such as TV, mobile phone produce interference between the wireless signal of frequency range, there is the shortcoming that noise immunity is lower, speech quality is lower, is not suitable in the various high-noise environments; So more and more lack competitiveness; Along with advancing by leaps and bounds of science and technology, novel digital multimedia equipment, communication apparatus propose the digitlization requirement to traditional electret capacitor microphone, promptly require traditional acoustic-electrical transducer spare by output simulated audio signal develop into direct output digit formula pulse signal form so that with the equipment digitalized slitless connection of digital application.Therefore, a kind of digital contact vibration pickup gesture is proposed for necessary in the industry.
The utility model content
The utility model is at the existing disappearance of above-mentioned prior art, and main purpose is to provide a kind of noise immunity height, digital contact vibration pickup that speech quality is good.
For realizing above-mentioned purpose, the utility model is taked following technical scheme:
A kind of digital contact vibration pickup, comprise shell with ccontaining cavity, vibrating membrane group with coat of metal, the hollow pad, back pole plate, the backplane panel seat, conduction connection box and wiring board, above-mentioned vibrating membrane group, the backplane panel seat keeps flat in the cavity of above-mentioned shell successively, above-mentioned back pole plate is embedded in the backplane panel seat, above-mentioned conduction connection box places the interior end face of above-mentioned backplane panel seat to contact with above-mentioned back pole plate and electrically connects, above-mentioned conduction connection ring frame other end contacts with the wiring board group and is electrically connected, the cavity opening of the outer of above-mentioned wiring board group and above-mentioned shell is also adaptive, above-mentioned shell is by the synthetic cylindrical outer cover space of above-mentioned wiring board assembly, and this wiring board is provided with the digital signal change-over circuit.
Above-mentioned digital signal change-over circuit comprises signal converter, output prime amplifier, limiter and the sigma-delta modulator that is electrically connected successively, wherein, amplify behind the signal of telecommunication by this output prime amplifier receiving signal conversion equipment and export to limiter, carry out amplitude limit through this limiter, export to sigma-delta modulator at last again, produce the digital single-bit output signal through sigma-delta modulator.
Above-mentioned vibrating membrane group comprises sheet metal and balancing weight, and above-mentioned balancing weight is fixed in above-mentioned sheet metal below.
Above-mentioned vibrating membrane group comprises one-body molded sheet metal and bearing, and this sheet metal is fixed on the bearing by a cantilever design.
Above-mentioned shell is the plastic compression shell.
Therefore, the utility model advantage is by being provided with the digital signal change-over circuit in the circuit board, utilize this this digital signal change-over circuit that the digital type pulse signal form that is directly changed into of former output simulated audio signal is transmitted, and then realize that electret capacitor microphone has the purpose of digitlization transmission signals, therefore can improve noise immunity and speech quality.
Description of drawings
Fig. 1 is the utility model cross section structure schematic diagram;
Fig. 2 is the utility model circuit theory schematic diagram;
Fig. 3 is the cross section structure schematic diagram of another execution mode of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As Fig. 1, a kind of digital contact vibration pickup, comprise the shell 1 with ccontaining cavity, vibrating membrane group 2, hollow pad 3, back pole plate 4, backplane panel seat 5, conduction connection box 6 and wiring board 7 with coat of metal, above-mentioned shell 1 is the plastic compression shell, can eliminate air borne sound, increase the anti-noise effect; Above-mentioned vibrating membrane group 2, backplane panel seat 5 keeps flat in the cavity of above-mentioned shell 1 successively, above-mentioned back pole plate 4 is embedded in the backplane panel seat 5, above-mentioned conduction connection box 6 places backplane panel seat 5 interior end faces to contact with back pole plate 4 and electrically connects, above-mentioned conduction connection ring frame 6 other ends contact with wiring board group 7 and are electrically connected, the cavity opening of the outer of above-mentioned wiring board group 7 and above-mentioned shell 1 is also adaptive, above-mentioned shell 1 is by the synthetic cylindrical outer cover space of above-mentioned wiring board 7 assembly, above-mentioned vibrating membrane group 2 comprises sheet metal 21 and balancing weight 22, and above-mentioned balancing weight 21 is fixed in sheet metal 21 belows.
Wherein, above-mentioned wiring board 6 is provided with the digital signal change-over circuit; As shown in Figure 2, digital signal change-over circuit system includes signal converter 71, output prime amplifier 72, limiter 73 and the sigma-delta modulator 74 that is electrically connected successively particularly, wherein, amplify behind the signal of telecommunication by these output prime amplifier 72 receiving signal conversion equipments 71 and export to limiter 73, carry out amplitude limit through this limiter 73, export to sigma-delta modulator 74 at last again, produce the digital single-bit output signal through sigma-delta modulator 74.
So, the transfer of vibration of throat is to vibration component 2 when speaking, utilize the inertial oscillation change vibration component 2 of sheet metal 21 and the variation of the capacitance between the back pole plate 4, be converted into the alternating signal that changes with vibration by wiring board 7 again and produce the digital single-bit output signal after the digital signal change-over circuit is handled the back.
As shown in Figure 3, be another execution mode of the utility model; Present embodiment and the foregoing description only difference are that vibration component 2 is to comprise one-body molded sheet metal 21 and bearing 23, and this sheet metal 21 is to be fixed on the bearing 23 by a cantilever design.Relevant shell 1, hollow pad 3, back pole plate 4, backplane panel seat 5, wiring board 6 and the last set digital signal change-over circuit that is equipped with thereof are same as the previously described embodiments, are not given unnecessary details at this.
The above, it only is the preferred embodiment of the utility model structure, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, a kind of digital contact vibration pickup, comprise shell (1) with ccontaining cavity, vibrating membrane group (2) with coat of metal, hollow pad (3), back pole plate (4), backplane panel seat (5), conduction connection box (6) and wiring board (7), above-mentioned vibrating membrane group (2), backplane panel seat (5) keeps flat in the cavity of above-mentioned shell (1) successively, above-mentioned back pole plate (4) is embedded in the backplane panel seat (5), above-mentioned conduction connection box (6) places the interior end face of backplane panel seat (5) to contact with back pole plate (4) and electrically connects, above-mentioned conduction connection ring frame (6) other end contacts with wiring board group (7) and is electrically connected, the cavity opening of the outer of above-mentioned wiring board group (7) and above-mentioned shell (1) is also adaptive, above-mentioned shell (1) is by the synthetic cylindrical outer cover space of above-mentioned wiring board (7) assembly, and it is characterized in that: this wiring board (7) is provided with the digital signal change-over circuit.
2, digital contact vibration pickup according to claim 1, it is characterized in that: above-mentioned digital signal change-over circuit comprises signal converter (71), output prime amplifier (72), limiter (73) and the sigma-delta modulator (73) that is electrically connected successively, wherein, amplify behind the signal of telecommunication by this output prime amplifier (72) receiving signal conversion equipment (71) and export to limiter (73), carry out amplitude limit through this limiter (73), export to sigma-delta modulator (74) at last again, produce the digital single-bit output signal through sigma-delta modulator (74).
3, digital contact vibration pickup according to claim 1 and 2 is characterized in that: above-mentioned vibrating membrane group (2) comprises sheet metal (21) and balancing weight (22), and above-mentioned balancing weight (21) is fixed in sheet metal (21) below.
4, digital contact vibration pickup according to claim 1 and 2 is characterized in that: above-mentioned vibrating membrane group (2) comprises one-body molded sheet metal (21) and bearing (23), and this sheet metal (21) is fixed on the bearing (23) by a cantilever design.
5, digital contact vibration pickup according to claim 1 and 2 is characterized in that: above-mentioned shell (1) is the plastic compression shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200478668U CN201216021Y (en) | 2008-05-16 | 2008-05-16 | Digital contact type vibration acoustic pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200478668U CN201216021Y (en) | 2008-05-16 | 2008-05-16 | Digital contact type vibration acoustic pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201216021Y true CN201216021Y (en) | 2009-04-01 |
Family
ID=40521226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200478668U Expired - Fee Related CN201216021Y (en) | 2008-05-16 | 2008-05-16 | Digital contact type vibration acoustic pickup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201216021Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333272A (en) * | 2011-08-18 | 2012-01-25 | 东莞泉声电子有限公司 | Simple and compact electret microphone |
| CN103428620A (en) * | 2012-05-18 | 2013-12-04 | 周巍 | Counter weight device for movable gaugger conduction type receiver |
| CN104469580A (en) * | 2014-11-30 | 2015-03-25 | 惠州市天音乐器有限公司 | Special sound pick-up for Guzheng |
| WO2023221069A1 (en) * | 2022-05-20 | 2023-11-23 | 深圳市韶音科技有限公司 | Vibration sensor and microphone |
-
2008
- 2008-05-16 CN CNU2008200478668U patent/CN201216021Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333272A (en) * | 2011-08-18 | 2012-01-25 | 东莞泉声电子有限公司 | Simple and compact electret microphone |
| CN103428620A (en) * | 2012-05-18 | 2013-12-04 | 周巍 | Counter weight device for movable gaugger conduction type receiver |
| CN103428620B (en) * | 2012-05-18 | 2018-05-04 | 苏州逸巛声学科技有限公司 | For moving the counter weight device of gagger conduction-type receiver |
| CN104469580A (en) * | 2014-11-30 | 2015-03-25 | 惠州市天音乐器有限公司 | Special sound pick-up for Guzheng |
| CN104469580B (en) * | 2014-11-30 | 2018-05-01 | 惠州市天音乐器有限公司 | A kind of special sound pick-up for Chinese zither |
| WO2023221069A1 (en) * | 2022-05-20 | 2023-11-23 | 深圳市韶音科技有限公司 | Vibration sensor and microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20140516 |