CN204192656U - Monomer fetus-voice meter - Google Patents
Monomer fetus-voice meter Download PDFInfo
- Publication number
- CN204192656U CN204192656U CN201420669605.5U CN201420669605U CN204192656U CN 204192656 U CN204192656 U CN 204192656U CN 201420669605 U CN201420669605 U CN 201420669605U CN 204192656 U CN204192656 U CN 204192656U
- Authority
- CN
- China
- Prior art keywords
- fetus
- monomer
- audio signal
- power amplifier
- voice meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000178 monomer Substances 0.000 title claims abstract description 25
- 230000005236 sound signal Effects 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- 210000002458 fetal heart Anatomy 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 230000010247 heart contraction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
A kind of monomer fetus-voice meter, comprise the doppler transducer be installed in a fuselage, for exporting an amplification filtering module of one first audio signal, a power amplifier module and loudspeaker, this monomer fetus-voice meter also comprises: an electric connector, for being connected with a computing equipment; One audio-frequency signal processing module, is connected for exporting one second audio signal with this electric connector; One signal selection module, it comprises two-way input and a road outfan, for the signal two on this two-way input is alternatively transported to this outfan, wherein a road input for receiving this first audio signal, for receiving this second audio signal, outfan is connected with this power amplifier module another road input; And a low pass filter, it is serially connected between this power amplifier module and this loudspeaker, and its cut-off frequency is lower than 10KHz.This utility model sound prompt feature richness, and can guarantee clearly to provide fetal heart beats sound equipment instruction sound.
Description
Technical field
This utility model relates to the checkout gear of domestic human body physiological parameter, particularly relates to domestic fetus-voice meter.
Background technology
Most of domestic fetus-voice meter belongs to uniset on the market.Existing monomer fetus-voice meter is generally utilize ultrasonic emitting to detect fetal heartbeat with receiving, and it roughly comprises a fuselage and be installed in this fuselage interior for the doppler transducer launching a hyperacoustic agitator, match with this agitator, the amplification filtering module be connected with this doppler transducer, the power amplifier module be connected with this amplification filtering module and the loudspeaker indicated for providing fetal heart beats sound equipment that are connected with this power amplifier module.On the one hand, existing monomer fetus-voice meter only provides fetal heart beats sound equipment to indicate sound by loudspeaker, and sound prompt function is dull.In addition, because doppler transducer and loudspeaker are installed in same fuselage, if loudspeaker will be read in by doppler transducer close to ultrasonic frequency mistakenly to the vibrations that body produces, cause signal again to be broadcasted by loudspeaker and produce resonance, and then the signal that can lead to errors is exaggerated and overrides fetal heart beats sound equipment instruction sound.
Utility model content
The technical problems to be solved in the utility model is the deficiency overcoming the existence of above-mentioned prior art, and proposes a kind of monomer fetus-voice meter, sound prompt feature richness, and can guarantee clearly to provide fetal heart beats sound equipment instruction sound.
The technical scheme that this utility model proposes for above-mentioned technical problem comprises, a kind of monomer fetus-voice meter is proposed, comprising a fuselage and the doppler transducer be installed in this fuselage, being connected with this doppler transducer for the amplification filtering module, the power amplifier module be connected with this amplification filtering module that export one first audio signal and the loudspeaker indicated for providing fetal heart beats sound equipment that are connected with this power amplifier module, this monomer fetus-voice meter also comprises: an electric connector, for being connected with a computing equipment; One audio-frequency signal processing module, is connected for exporting one second audio signal with this electric connector; One audio-frequency signal processing module, for receiving and processing this second audio signal; One signal selection module, it comprises two-way input and a road outfan, for the signal two on this two-way input is alternatively transported to this outfan, wherein a road input for receiving this first audio signal, for receiving this second audio signal, outfan is connected with this power amplifier module another road input; And a low pass filter, it is serially connected between this power amplifier module and this loudspeaker, and its cut-off frequency is lower than 10KHz.
In certain embodiments, this low pass filter is single order RC wave filter.
In certain embodiments, this low pass filter is second order filter.
In certain embodiments, the cut-off frequency of this low pass filter is set in 9KHz.
In certain embodiments, the power of this first audio signal is suitable with the power of this second audio signal.
In certain embodiments, this monomer fetus-voice meter also comprises the adjusting device matched with this power amplifier module, for regulating the output of this power amplifier module.
In certain embodiments, this computing equipment refers to smart mobile phone.
Compared with prior art, monomer fetus-voice meter of the present utility model is by setting up electric connector, audio-frequency signal processing module and signal selection module, external computing equipment aspect can be passed any audio signal of coming and convert into the sound that user's ear can hear to by loudspeaker, sound prompt feature richness; In addition, by setting up low-frequency filter, effectively can get rid of the resonance between doppler transducer and loudspeaker, can guarantee clearly to provide fetal heart beats sound equipment instruction sound.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of this utility model monomer fetus-voice meter embodiment.
Fig. 2 is the circuit signal of low pass filter in this utility model embodiment.
Fig. 3 is the frequency characteristic signal of low pass filter in this utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, elaboration is further given to this utility model.
Fig. 1 is the structured flowchart of this utility model monomer fetus-voice meter embodiment.As shown in Figure 1, monomer fetus-voice meter of the present utility model comprises: a fuselage (not shown) and the agitator 101 be installed in this fuselage, the doppler transducer 102 matched with this agitator 101, be connected for the amplification filtering module 103 exporting one first audio signal, the power amplifier module 104 be connected with this amplification filtering module 103 and the loudspeaker 105 indicated for providing fetal heart beats sound equipment that are connected with this power amplifier module 104 with this doppler transducer 102.
This monomer fetus-voice meter also comprises: an electric connector 106, for being connected with a computing equipment (not shown) of such as smart mobile phone and so on; One audio-frequency signal processing module 107, is connected with this electric connector 106 for exporting one second audio signal; One signal selection module 108, it comprises two-way input and a road outfan, for the signal two on this two-way input is alternatively transported to this outfan, wherein a road input is connected for receiving this first audio signal with amplification filtering module 103, for receiving this second audio signal, outfan is connected with this power amplifier module 104 another road input with audio-frequency signal processing module 107; One low pass filter 109, it is serially connected between these power amplifier module 104 and this loudspeaker 105, and its cut-off frequency is lower than 10KHz; And an adjusting device 110, it matches with this power amplifier module 104, for regulating the output of this power amplifier module 104, and the namely volume of loudspeaker 105.
Specifically, doppler transducer 102 is responsible for transmitting and receiving ultrasonic signal, and the tranmitting frequency produce agitator 101 and the frequency of reception contrast and identify that heart beating shakes, and the acoustical signal vibrations of discovery being converted to low frequency exports.The acoustical signal that doppler transducer 102 exports by amplification filtering module 103 tentatively filters and amplifies rear output first audio signal, the power of the second audio signal that the power of this first audio signal and audio-frequency signal processing module 107 export quite (namely roughly equal), this first audio signal via loudspeaker 105, can be arrived by the microphones of mobile phone.Signal selection module 108 is outputed signal amplification by power amplifier module 104.Audio-frequency signal processing module 107 electrical connectors 106, is responsible for realizing and computing equipment mating operation.Signal selection module 108 is when computing equipment non-output signal, the first audio signal amplification filtering module 103 provided is connected to power amplifier module 104, then the second audio signal that audio-frequency signal processing module 107 transmits is outputted to power amplifier module 104 when computing equipment has output signal.Low-pass filtering treatment is done in the output of low-pass filtering module 109 pairs of power amplifier modules 104, finally audio signal is broadcasted from loudspeaker 105, can reduce altofrequency and shake the interference brought doppler transducer 102.Adjusting device 110 controls the output of power amplifier module 104.
Fig. 2 is the circuit signal of low pass filter in this utility model embodiment.As shown in Figure 2, this low pass filter 109 can be single order RC wave filter.Fig. 3 is the frequency characteristic signal of low pass filter in this utility model embodiment.In the present embodiment, the cut-off frequency of this low pass filter 109 is set in 9KHz.In other embodiments, this low pass filter 109 can be also second order filter, and its filter effect can be more.
Compared with prior art, monomer fetus-voice meter of the present utility model is by setting up electric connector 106, audio-frequency signal processing module 107 and signal selection module 108, computing equipment aspect can be passed any audio signal of coming and convert into the sound that user's ear can hear to and broadcast by loudspeaker 105, sound prompt feature richness; In addition, by setting up low-frequency filter 109, effectively can get rid of the resonance between doppler transducer 102 and loudspeaker 105, can guarantee clearly to provide fetal heart beats sound equipment instruction sound.
It is worth mentioning that, in the present embodiment, this computing equipment is smart mobile phone, and in other embodiments, this computing equipment also can be easy to the equipment such as hand-held panel computer and the fixing desk computer installed.In the present embodiment, this electric connector 106 is earphone socket, and it is electrically connected with computing equipment by connection cable, and in other embodiments, this electric connector 106 also can be the adapter that other of such as USB and so on can transmit audio signal.
Foregoing; be only preferred embodiment of the present utility model; not for limiting embodiment of the present utility model; those of ordinary skill in the art are according to central scope of the present utility model and spirit; can carry out corresponding flexible or amendment very easily, therefore protection domain of the present utility model should be as the criterion with the protection domain required by claims.
Claims (7)
1. a monomer fetus-voice meter, comprise a fuselage and being installed in a doppler transducer in this fuselage, being connected with this doppler transducer for the amplification filtering module, the power amplifier module be connected with this amplification filtering module that export one first audio signal and the loudspeaker indicated for providing fetal heart beats sound equipment that are connected with this power amplifier module, it is characterized in that, this monomer fetus-voice meter also comprises: an electric connector, for being connected with a computing equipment; One audio-frequency signal processing module, is connected for exporting one second audio signal with this electric connector; One signal selection module, it comprises two-way input and a road outfan, for the signal two on this two-way input is alternatively transported to this outfan, wherein a road input for receiving this first audio signal, for receiving this second audio signal, outfan is connected with this power amplifier module another road input; And a low pass filter, it is serially connected between this power amplifier module and this loudspeaker, and its cut-off frequency is lower than 10KHz.
2. according to monomer fetus-voice meter according to claim 1, it is characterized in that, this low pass filter is single order RC wave filter.
3. according to monomer fetus-voice meter according to claim 1, it is characterized in that, this low pass filter is second order filter.
4. according to monomer fetus-voice meter according to claim 1, it is characterized in that, the cut-off frequency of this low pass filter is set in 9KHz.
5. according to monomer fetus-voice meter according to claim 1, it is characterized in that, the power of this first audio signal is suitable with the power of this second audio signal.
6. according to monomer fetus-voice meter according to claim 1, it is characterized in that, this monomer fetus-voice meter also comprises the adjusting device matched with this power amplifier module, for regulating the output of this power amplifier module.
7., according to the monomer fetus-voice meter described in any one of claim 1 to 6, it is characterized in that, this computing equipment refers to smart mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669605.5U CN204192656U (en) | 2014-11-11 | 2014-11-11 | Monomer fetus-voice meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669605.5U CN204192656U (en) | 2014-11-11 | 2014-11-11 | Monomer fetus-voice meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204192656U true CN204192656U (en) | 2015-03-11 |
Family
ID=52650664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669605.5U Expired - Fee Related CN204192656U (en) | 2014-11-11 | 2014-11-11 | Monomer fetus-voice meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204192656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998594A (en) * | 2019-03-29 | 2019-07-12 | 深圳市捷美瑞科技有限公司 | A kind of fetal heart rate signal processing method and system and heart rate meter for fetus |
-
2014
- 2014-11-11 CN CN201420669605.5U patent/CN204192656U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998594A (en) * | 2019-03-29 | 2019-07-12 | 深圳市捷美瑞科技有限公司 | A kind of fetal heart rate signal processing method and system and heart rate meter for fetus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150311 |