CN205005227U - Frequency selective device and ultrasonic wave microphone and terminal equipment - Google Patents
Frequency selective device and ultrasonic wave microphone and terminal equipment Download PDFInfo
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- CN205005227U CN205005227U CN201520417399.3U CN201520417399U CN205005227U CN 205005227 U CN205005227 U CN 205005227U CN 201520417399 U CN201520417399 U CN 201520417399U CN 205005227 U CN205005227 U CN 205005227U
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Abstract
The utility model relates to a speech signal processing technique field especially relates to a frequency selective device and ultrasonic wave microphone and terminal equipment. Including the silica -based out -of -the -way polar plate that has a predetermined area hole, one with silica -based out -of -the -way polar plate assorted cavity, the cavity combines the hole forms the frequency resonance under the preset frequency state. The utility model discloses based on sound signal formation control command, acquire the voice signal through the ultrasonic wave microphone, and then form control command, and ultrasonic wave microphone simple structure, the same with current microphone structure, only need set up the one or more hole can, can catch ultrasonic signal through setting up with hole assorted cavity, need not real -time detection, consumption greatly reduced, in addition, hyperacoustic sound source can be formed by arbitrary device, application scope is wider.
Description
Technical field
The utility model relates to a kind of voice process technology field, particularly relates to a kind of frequency selective device and ultrasonic microphone and terminal equipment.
Background technology
Existing mobile terminal, mostly just be applicable to one to using in double harness, when the content of same mobile terminal is watched in many individual demands jointly, usual needs projection arrangement projects, but this kind of mode is subject to many-sided restriction, such as, have requirement to place, the projection of grenade instrumentation needs certain distance to limit; And by the information that grenade instrumentation projection obtains, the colour gamut of its color is lower, be unfavorable for differentiating.In addition when only only having a few peoples, using grenade instrumentation, being easier to cause the wasting of resources, and being unfavorable for multi-person interactive, overall structure is comparatively large, carry inconvenience.
In order to solve the problems of the technologies described above, now develop one and be equipped with radium-shine emitter, the mobile terminal of radium-shine receiving system, radium-shine emitter is set on mobile terminals, and in the radium-shine receiving system that described laser apparatus matches, mobile terminal projects on a preposition by laser apparatus, operator clicks institute's file of getting or word in the projected area of laser apparatus, its colour gamut is wider, and be conducive to multi-person interactive use, but there is following defect in this kind of device: one, using light signal (laser apparatus formation) as signal vehicle, and whether radium-shine receiving system need carry out in real time detecting and have light signal to be blocked, power consumption is larger, two, because of employing is that light signal reflects to form control command, when the hand strap of operator has scar or tatoos, then can not produce light reflection, namely cannot formation control order, therefore the scope of application receives larger limitation, three, structure is more complicated, be unfavorable for mobile terminal slimming design, four, radium-shine emitter and radium-shine receiving system cost higher.
Utility model content
For the deficiencies in the prior art, the utility model provides frequency selective device and ultrasonic microphone and terminal equipment, adopts this frequency-selective network, and structure is comparatively simple, is conducive to integrated, and produce control command based on voice signal, its power consumption is lower, and the scope of application is wider.
Realize above-mentioned technical purpose, the technological means adopted is:
A kind of frequency selective device, be applied to ultrasonic microphone, wherein, comprise the silicon-based backing electrode plate with an acoustics through hole, one cavity matched with described silicon-based backing electrode plate, offer the hole of a predetermined area in the bearing of trend of described acoustics through hole, described cavity is in conjunction with described hole forming frequency resonance under preset frequency state.
Above-mentioned frequency selective device, wherein, described predetermined area is 1/4th of described preset frequency wavelength.
Above-mentioned frequency selective device, wherein, the scope of described predetermined area is 0.2 μm ~ 0.9 ㎜.
Above-mentioned frequency selective device, wherein, described hole adopts laser technology to be formed.
Above-mentioned frequency selective device, wherein, described hole is formed by one or more through hole.
A kind of ultrasonic microphone, wherein, comprises above-mentioned frequency selective device described arbitrarily.
A kind of terminal equipment, wherein, comprises,
Ultrasonic transmission device, is fixedly installed on the first precalculated position of described terminal equipment, forms a supersonic zone under being used to projection state;
Ultrasonic microphone, is fixedly installed on the second precalculated position of described terminal equipment, in order to detect in described supersonic zone whether there is control command, and forms a detection data output;
Control unit, receives described detection data, and exports according to the control signal that described detection data formation one and described control command match.
Above-mentioned terminal equipment, wherein, described ultrasonic microphone comprises above-mentioned arbitrary described frequency selective device.
Above-mentioned terminal equipment, wherein, described ultrasonic microphone is above-mentioned ultrasonic microphone.
Compared with prior art, the utility model has the advantages that:
The utility model is based on the order of voice signal formation control, ultrasonic signal is obtained by ultrasonic microphone, and then formation control order, ultrasonic microphone structure is simple, identical with existing microphone structure, only need to arrange one or more hole again can be formed, ultrasonic signal can be caught by arranging the cavity matched with hole, adopt ultrasonic microphone, whether control command is produced without the need to detecting in real time, the position of detection control order generation is only carried out in the moment of control command generation, under this kind of mode, power consumption reduces greatly, in addition, hyperacoustic sound source can be formed by any device, such as point, pen, teach stick etc. can, the scope of application is wider.Further, only need to increase a ultrasonic transmission device and a ultrasonic microphone mated with ultrasonic transmission device on existing equipment, structure is simple and cost is lower, is conducive to realizing the integrated of mobile terminal.
Accompanying drawing explanation
Fig. 1 is the vertical view of a kind of frequency selective device in the utility model;
Fig. 2 is the structural representation of a kind of terminal equipment of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of the utility model protection.
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
As shown in Figure 1, a kind of frequency selective device, be applied to ultrasonic microphone, wherein, comprise the silicon-based backing electrode plate 1 with an acoustics through hole 3, the one cavity (not shown) matched with described silicon-based backing electrode plate 1, offer the hole 2 of a predetermined area in the bearing of trend of described acoustics through hole 3, described cavity is in conjunction with described hole 2 forming frequency resonance under preset frequency state.Be formed with hole 2 structure in silicon-based backing electrode plate 1, under predetermined frequency state, hole 2 and cavity forming frequency resonance, namely the frequency signal corresponding to this frequency resonance is exaggerated, and then is exported by frequency signal.
The utility model is based on the order of voice signal formation control, voice signal is obtained by ultrasonic microphone, and then formation control order, and ultrasonic microphone structure is simple, identical with existing microphone structure, only need to arrange one or more hole 2, ultrasonic signal can be caught by arranging the cavity matched with hole 2, without the need to real-time detection, power consumption reduces greatly, and in addition, hyperacoustic sound source can be formed by any device, such as finger, pen, teach stick etc. can, the scope of application is wider.
As further preferred version, above-mentioned frequency selective device, wherein, described predetermined area is 1/4th of described preset frequency wavelength.According to helmholtz resonance law, resonance frequency is directly proportional to the area of hole 2, being 1/4th of described preset frequency wavelength, by changing different wavelength, catching the ultrasonic signal of different frequency-selecting point by predetermined area.
As further preferred version, above-mentioned frequency selective device, wherein, the scope of described predetermined area is 0.2 μm ~ 0.9 ㎜.Ultrasonic frequency is the sound wave higher than 20KHz, adopts the hole 2 of 0.2 μm ~ 0.9 ㎜, can catch the ultrasonic wave of optional frequency.
As further preferred version, as further preferred version, above-mentioned frequency selective device, wherein, described hole 2 adopts laser technology to be formed.Because of existing mechanical technology the cross section of lowest limit hole 2 that becomes to manufacture be 0.2 ㎜, cannot ultrasonic microphone be formed, thus adopt laser technology to form ultrasonic microphone.
As further preferred version, above-mentioned frequency selective device, wherein, described hole 2 is formed by one or more through hole.Adopt one or more through hole to form hole 2, multiple occasion can be used.
The utility model provides a kind of ultrasonic microphone simultaneously, wherein, comprises above-mentioned frequency selective device described arbitrarily.
As shown in Figure 2, the utility model provides a kind of terminal equipment simultaneously, wherein, comprises,
Ultrasonic transmission device, is fixedly installed on the first precalculated position of described terminal equipment, forms a supersonic zone under being used to projection state;
Ultrasonic microphone, is fixedly installed on the second precalculated position of described terminal equipment, in order to detect in described supersonic zone whether there is control command, and forms a detection data output;
Control unit, receives described detection data, and exports according to the control signal that described detection data formation one and described control command match.
A kind of terminal equipment, its operation principle is: ultrasonic transmission device projection formation one supersonic zone; Whether ultrasonic microphone detects in described supersonic zone exists control command (main detection ultrasonic reflections whether is obstructed or whether ultrasonic wave distorts), and forms a detection data output; Control unit receives described detection data, and exports according to the control signal that described detection data formation one and described control command match.Adopt this kind of terminal equipment, only need to increase a ultrasonic transmission device and a ultrasonic microphone mated with ultrasonic transmission device on existing equipment, structure is simple and cost is lower, is conducive to realizing the integrated of mobile terminal.
Enumerate an embody rule mode, for mobile terminal, at upper installation one ultrasonic transmission device of mobile terminal, the microphone of mobile terminal is replaced with ultrasonic microphone, ultrasonic transmission device projection formation one supersonic zone, the identical display interface with mobile terminal screen is formed in supersonic zone, handle icon in user selection interface, finger or pen are clicked this operation picture, finger or a clicking operation hinder hyperacoustic reflection, ultrasonic microphone detects that this obstruction operates, data are detected according to this obstruction operation formation one, control unit receives this detection data, operate with obstruction the control signal matched according to detection data formation one to export.Further, the ultrasonic microphone of mobile terminal still has all functions of common microphone.
As further preferred version, wherein, described ultrasonic microphone comprises above-mentioned frequency selective device.
As further preferred version, described ultrasonic microphone is above-mentioned ultrasonic microphone.
The foregoing is only the utility model preferred embodiment; not thereby execution mode of the present utility model and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model specifications and diagramatic content and apparent change obtain in protection range of the present utility model.
Claims (7)
1. a frequency selective device, be applied to ultrasonic microphone, it is characterized in that, comprise the silicon-based backing electrode plate with an acoustics through hole, one cavity matched with described silicon-based backing electrode plate, offer the hole of a predetermined area in the bearing of trend of described acoustics through hole, described cavity is in conjunction with described hole forming frequency resonance under preset frequency state.
2. frequency selective device according to claim 1, is characterized in that, described predetermined area is 1/4th of described preset frequency wavelength.
3. frequency selective device according to claim 1, is characterized in that, the scope of described predetermined area is 0.2 μm ~ 0.9 ㎜.
4. frequency selective device according to claim 1, is characterized in that, described hole adopts laser technology to be formed.
5. according to frequency selective device according to claim 1, it is characterized in that, described hole is formed by one or more through hole.
6. a ultrasonic microphone, is characterized in that, comprises the frequency selective device described in any one of the claims 1 ~ 5.
7. a terminal equipment, is characterized in that, comprises,
Ultrasonic transmission device, is fixedly installed on the first precalculated position of described terminal equipment, forms a supersonic zone under being used to projection state;
Ultrasonic microphone, is fixedly installed on the second precalculated position of described terminal equipment, in order to detect in described supersonic zone whether there is control command, and forms a detection data output;
Control unit, receives described detection data, and exports according to the control signal that described detection data formation one and described control command match, and described ultrasonic microphone comprises the frequency selective device described in any one of the claims 1 ~ 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520417399.3U CN205005227U (en) | 2015-06-16 | 2015-06-16 | Frequency selective device and ultrasonic wave microphone and terminal equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520417399.3U CN205005227U (en) | 2015-06-16 | 2015-06-16 | Frequency selective device and ultrasonic wave microphone and terminal equipment |
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| CN205005227U true CN205005227U (en) | 2016-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106331916A (en) * | 2015-06-16 | 2017-01-11 | 钰太芯微电子科技（上海）有限公司 | Frequency selection device, ultrasonic microphone and terminal equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106331916A (en) * | 2015-06-16 | 2017-01-11 | 钰太芯微电子科技（上海）有限公司 | Frequency selection device, ultrasonic microphone and terminal equipment |
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