CN205597949U - Intelligence fetal heart sound monitor - Google Patents
Intelligence fetal heart sound monitor Download PDFInfo
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- CN205597949U CN205597949U CN201620056326.0U CN201620056326U CN205597949U CN 205597949 U CN205597949 U CN 205597949U CN 201620056326 U CN201620056326 U CN 201620056326U CN 205597949 U CN205597949 U CN 205597949U
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- fetal heart
- heart sound
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Abstract
The utility model discloses an intelligence fetal heart sound monitor belongs to fetal heart sound monitoring technology, including the tapered casing of both ends open -ended, lid with the less open end sealing connection of casing, locate the sound sensor on the shells inner wall, an and differential global positioning system, the sound sensor includes first collection terminal surface and second collection terminal surface, and first collection end face contaction sets up in shells inner wall, and it is right that the differential global positioning system configuration is used for the child heart sound signal of first collection terminal surface and the collection of second collection terminal surface carries out differential processing. The utility model discloses a reverse first collection terminal surface and the second collection terminal surface that is used for gathering child heart sound signal that set up on the sound sensor for interference sound signal that first collection terminal surface and second collection terminal surface were gathered be equivalent, and the child heart sound signal of first collection terminal surface collection is then be more than the child heart sound signal that the terminal surface collection was gathered to the second, and then the differential processing through differential global positioning system, in order to gain the child heart sound signal that the SNR is higher, has improved the accuracy of child heart sound signal collection.
Description
Technical field
This utility model relates to fetal heart sound monitoring technology, is specifically related to a kind of intelligence fetal heart sound monitor.
Background technology
Fetal heart sound has contained abundant physiologic information, is one of important indicator judging foetus health situation.Anemia of pregnant woman's period of gestation, if fetus in uterus occurs that unusual condition will its dysplasia even fetal asphyxia.It is therefore desirable to fetus persistently to be carried out fetal heart sound monitoring, on the one hand can judge upgrowth situation of fetus according to this, fetus on the other hand also can be prevented to occur unexpected.
Fetal heart sound monitoring technology mainly has two kinds at present:
Doppler ultrasound detector for fetal heart sound, in medical institutions, most armarium uses this technology to realize, and utilizes the Doppler effect monitoring fetal heart sound of ultrasonic signal.But the usual volume of this kind equipment is the hugest, expensive, needs the people with professional operation skill just can complete to measure, and human body is had a certain impact by ultrasonic radiation, is not suitable for carrying out long term monitoring.
Passive-type fetal heart sound monitor, this kind equipment realizes heart sound by capture fetal heart sound audio signal and monitors, and conventional passive-type fetal heart sound monitor often uses a set of stethoscope with bell auscultation head to realize, and its monitoring is disturbed that sound is big, accuracy is low.
Utility model content
The purpose of this utility model is to overcome above-mentioned technical deficiency, proposes a kind of intelligence fetal heart sound monitor, its small volume, without Ultrasonic Radiation, suitable long term monitoring, and monitoring precision height.
For reaching above-mentioned technical purpose, the technical solution of the utility model provides a kind of intelligence fetal heart sound monitor, including,
The tapered housing of one both ends open, wherein the radius of an opening is more than the radius of another opening；
The lid that the opening less with radius is tightly connected；
Being located at the sound transducer in described inner walls, described sound transducer includes that the first collection end face and second that is oppositely arranged and that be used to gather fetal heart sound signal gathers end face, and described first collection end face is contacted with described inner walls and arranges；And
One differential system electrically connected with described sound transducer, described differential system carries out difference processing for gathering end face and the second fetal heart sound signal gathering end face collection to described first.
Preferably, described intelligence fetal heart sound monitor also includes that an interference tones signal in the fetal heart sound signal processed by described differential system carries out the wave filter filtered, one amplifier amplified for the fetal heart sound signal that will filter, one for the wireless transport module sent by the fetal heart sound signal of amplification.
Preferably, described wave filter includes that the frequency range to fetal heart sound signal is outer and interference tones signal in frequency band filters successively the first wave filter and the second wave filter.
Preferably, described intelligence fetal heart sound monitor also includes one for the rechargable power supplies of power supply, and the quick-charging circuit that is all connected with described power supply and discharge protection circuit.
Preferably, the larger open end that the radius of described housing is bigger is coated with silicone gasket, is provided with a branch of band in the middle part of the outer wall of described housing.
Preferably, described lid is provided with switch hole, is provided with press button in described switch hole.
Preferably, described intelligence fetal heart sound monitor also includes one for fetal heart sound signal carries out the after-treatment system of post processing, described after-treatment system includes the wireless reception module of a fetal heart sound signal for coordinating the described wireless transport module of acceptance to send, and one for being processed as the heart rate processing module of Fetal Heart Rate by the fetal heart sound signal that wireless reception module accepts.
Preferably, described heart rate processing module include one in the fetal heart sound signal that wireless reception module is accepted interference tones signal carry out the filter unit filtered, one carries out the peak detection unit of peakvalue's checking for the fetal heart sound signal filtered by described filter unit, and one for the time domain average unit that peak value time domain average is Fetal Heart Rate detected by described peak detection unit.
Preferably, described after-treatment system also includes one for the spectroscopy processing module that signal procesing in time domain is spectrogram of fetal heart sound signal filtered by described filter unit and a warning module, and described warning module carries out early warning when the Fetal Heart Rate obtained and spectrogram are as exception for judging.
Preferably, described housing is stainless steel, and described lid is PVC material.
Compared with prior art, this utility model gathers end face by the first collection end face and second for gathering fetal heart sound signal oppositely arranged on sound transducer, making the first collection end face and the second interference tones signal gathering end face collection is equivalent, the fetal heart sound signal that first fetal heart sound signal gathering end face collection then gathers much larger than the second collection end face, and then by the difference processing of differential system, to obtain the higher fetal heart sound signal of signal to noise ratio, improve the accuracy that fetal heart sound signal gathers.
Accompanying drawing explanation
Fig. 1 is the attachment structure schematic diagram of intelligence fetal heart sound monitor of the present utility model；
Fig. 2 is the connection block diagram of intelligence fetal heart sound monitor of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Referring to Fig. 1, Fig. 2, embodiment of the present utility model provides a kind of intelligence fetal heart sound monitor, including,
The tapered housing 1 of one both ends open, wherein the radius of an opening is more than the radius of another opening；
The lid 2 that the opening less with radius is tightly connected；
It is located at the sound transducer 3 on described housing 1 inwall, described sound transducer 3 includes that the first collection end face 301 and second that is oppositely arranged and that be used to gather fetal heart sound signal gathers end face 302, and described first collection end face 301 is contacted with described housing 1 inwall and arranges；And
One differential system 4 electrically connected with described sound transducer 3, described differential system 4 carries out difference processing for gathering end face 301 and the second fetal heart sound signal gathering end face 302 collection to described first.
The present embodiment gathers end face 302 by the first collection end face 301 and second for gathering fetal heart sound signal oppositely arranged on sound transducer 3, making the first collection end face 301 and the second interference tones signal gathering end face 302 collection is equivalent, the fetal heart sound signal that first fetal heart sound signal gathering end face 301 collection then gathers much larger than the second collection end face 302, and then by the difference processing of differential system 4, to obtain the higher fetal heart sound signal of signal to noise ratio, improve the accuracy that fetal heart sound signal gathers.
Sound transducer 3 can be assembled on housing 1 inwall by soft base PCB when specifically arranging, and ensure that the first collection end face 301 fits in housing 1 inwall, and the second collection end face 302 is contactless with housing 1 inwall, the acoustical signal realizing the first collection end face 301 collection is obtained by housing 1, and the second acoustical signal gathering end face 302 collection is obtained by air borne.In order to reduce the volume of the present embodiment monitor, sound transducer 3 can be set to two oppositely arranged MEMS MIC sensors, the sound signal collecting end face of two MEMS MIC sensors is respectively the first collection end face 301 and second and gathers end face 302.
The present embodiment is when specifically arranging, one main control board 5 can be set, arrange in this main control board 5 is located at housing 1 and near lid 2, can just be located on described main control board 5 by differential system 4 simultaneously, in order to improve the accuracy of fetal heart sound signal further, avoid the noise of outside, the accuracy of the disturbed tests such as friction sound, the present embodiment is provided with the wave filter 6 that an interference tones signal in the fetal heart sound signal processed by described differential system 4 carries out filtering on described main control board 5, and for the ease of the transmission of signal filtered and extraction, it is additionally provided with one on main control board 4 and is used for, for the amplifier 7 amplified by the fetal heart sound signal of filtration and one, the wireless transport module 8 that sent by the fetal heart sound signal of amplification.
The filtration of fetal heart sound signal mainly includes the filtration of both sides interference tones signal, on the one hand it is the interference tones signal outside the frequency range of fetal heart sound signal, on the other hand it is the interference tones signal in the frequency band of fetal heart sound signal, and in order to all be filtered out by above two interference tones signal, the described wave filter 6 of the present embodiment includes the first wave filter 601 and the second wave filter 602 that the interference tones signal outside the frequency range to fetal heart sound signal and in frequency band filters successively.Concrete, wherein, the first wave filter 601 is preferably FIR band filter, and the second wave filter is preferably Kalman filter.
Wireless transport module 8 preferably employs bluetooth, it is possible to use 3G or 4G wireless network transmissions.
The larger open end that the radius of the described housing 1 of the present embodiment is bigger is coated with silicone gasket 9, on the one hand the contact area of housing 1 and human body is increased by arranging of silicone gasket 9, reduce noise to be mixed into, thus improve the collection effect of sound transducer 3, on the other hand increase the more comfortable of flesh human contact's housing 1.And wearing for the ease of user, it being provided with a branch of band 10 in the middle part of the outer wall of the described housing of this enforcement 1, this band ring 10 is arranged around housing 1 outer wall, in order to can be connected with band ring 10 by elastic cord when user is worn and then colligation is in user loins.
In order to increase the used persistence of the present embodiment intelligence fetal heart sound monitor, described in the present embodiment, intelligence fetal heart sound monitor also includes one for the rechargable power supplies 11 powered, this power supply 11 specifically can use a capacity to be the lithium battery of 300mAh, and for the ease of the use of above-mentioned power supply 11 and its service life can be extended, it is additionally provided with a quick-charging circuit being connected with described power supply 11 and discharge protection circuit on intelligence fetal heart sound monitor, the chip that specifically model can be used to be S-8261 and FS8205, to realize discharge cut-off voltage as 3.7V, charging saturation voltage is 4.25V.Power supply 11 charging can use MicroUSB interface 12, interface 12 can be located on the sidewall of housing 1, and owing to power supply 11 is arranged near above-mentioned main control board 5, therefore the above-mentioned interface 12 of correspondence is arranged near lid 2.
Lid 2 is provided with switch hole 201, it is provided with press button 13 in described switch hole 201, the switch of monitor can be controlled by press button 13, specifically can be controlled by a control circuit, to realize completing the startup of monitor and stopping monitoring after the long switch 13 that touches the button reaches 3 seconds.
The service condition of monitor is observed for the ease of user, can arrange dual-colored LED lamp 14 on the outer wall of lid 2 or housing 1 to show, the present embodiment is preferably provided with on lid 2, specifically can use green and red display, after i.e. monitor starts, green LED lamp is with the frequency scintillation of 0.5Hz；When long by when stopping monitoring, red LED lamp flashes 5 seconds continuously with 2Hz frequency, then stops flicker.Additionally, realize above-mentioned dual-colored LED lamp 14 etc. also by a battery protecting circuit to observe the use state of power supply, specially under charged state, red LED with the frequency scintillation of 1Hz, fully charged after, red LED Chang Liang；And when battery is in under-voltage condition, red and green LED alternately flashes with the frequency of 0.5Hz.Certainly, it is possible to be set to other flicker different implications of status representative, specifically can need be configured according to operator, and above-mentioned being set to this area routine techniques, therefore not to repeat here.
Fetal heart sound signal is through gathering and after pre-treatment, fetal heart sound information can be accurately judged by plain mode for the ease of user, also need to fetal heart sound signal is carried out later stage process, the fetal heart sound signal of the present embodiment collection can be used in combination with the later stage Treatment Analysis device of prior art, in order to fetal heart sound signal is converted to user and may be appreciated information.And the described intelligence fetal heart sound monitor body of the present embodiment provides a kind of after-treatment system 15 for fetal heart sound signal carries out post processing, described after-treatment system 15 includes the wireless reception module 151 of a fetal heart sound signal for coordinating the described wireless transport module 8 of acceptance to send, and one for being processed as the heart rate processing module 152 of Fetal Heart Rate by the fetal heart sound signal that wireless reception module 151 accepts.Concrete, operation for the ease of user, after-treatment system 15 can be realized by a smart mobile phone APP, the fetal heart sound signal that above-mentioned wireless transport module 8 sends is accepted by smart mobile phone APP, and above-mentioned fetal heart sound signal is stored, then above-mentioned fetal heart sound signal can be processed as Fetal Heart Rate by user as required.Additionally, after-treatment system 15 realizes also by other-end certainly.
Wherein, described heart rate processing module 152 include one in the fetal heart sound signal that wireless reception module 151 is accepted interference tones signal carry out the filter unit 152a filtered, one for carrying out the peak detection unit 152b of peakvalue's checking by the fetal heart sound signal that described filter unit 152a filters, one for the time domain average unit 152c that peak value time domain average is Fetal Heart Rate detected by described peak detection unit 152b, concrete, can just wireless reception module 151 accept fetal heart sound signal through high-pass digital filter filter after carry out peakvalue's checking, carry out time domain average the most again and can obtain Fetal Heart Rate, this Fetal Heart Rate can be easy to user and directly observes, the Fetal Heart Rate of contrast fetus is the most abnormal.
Simultaneously, described after-treatment system 15 also includes one for the spectroscopy processing module that signal procesing in time domain is spectrogram 153 of fetal heart sound signal filtered by described filter unit 152a and a warning module 154, and described warning module 154 carries out early warning when the Fetal Heart Rate obtained and spectrogram are as exception for judging.Concrete, can by the time-domain signal of fetal heart sound signal by after fast Fourier transform with spectrogram by the way of be presented to user, in order to the observation of user, contrast.Warning module 153 is then the data of the Fetal Heart Rate of above-mentioned acquisition and spectrogram with normal fetus to be analyzed, if occurring abnormal, then above-mentioned Fetal Heart Rate and spectrogram are checked, if the Fetal Heart Rate checked and spectrogram are the most abnormal, then remind user fetus to be in abnormality, physiology shape body should be adjusted or detect to hospital.
The housing 1 of the present embodiment is stainless steel, and for the ease of the transmission of fetal heart sound signal, the lid 2 of the present embodiment is PVC material.
nullThe intelligence specifically used flow process of fetal heart sound monitor of the present utility model is as follows，First pass through the first collection end face 301 and the second collection end face 302 gathers fetal heart sound signal respectively，Then gather end face 301 by first and the second fetal heart sound signal gathering end face 302 carries out difference processing，Again by the interference tones target signal filter in the fetal heart sound signal after difference processing after difference processing，Send after filtering to after-treatment system 15，After-treatment system 15 will filter after fetal heart sound signal again filter after carry out peakvalue's checking，And the peak value of detection is carried out time domain average acquisition Fetal Heart Rate，The time-domain signal of the fetal heart sound signal again filtered can be converted to fetal heart sound spectrogram by user as required simultaneously，Judge that the Fetal Heart Rate of acquisition and spectrogram are the most abnormal finally by warning module 154，If abnormal, check，Check still abnormal then to user early warning.
The above detailed description of the invention of the present utility model, is not intended that the restriction to this utility model protection domain.Any various other made according to technology of the present utility model design change and deformation accordingly, should be included in this utility model scope of the claims.
Claims (10)
1. an intelligent fetal heart sound monitor, it is characterised in that include,
The tapered housing (1) of one both ends open, wherein the radius of an opening is more than another opening
Radius；
The lid (2) that the opening less with radius is tightly connected；
The sound transducer (3) being located on described housing (1) inwall, described sound transducer (3)
Including oppositely arranged and be used to gather fetal heart sound signal first collection end face (301) and second collection
End face (302), and described first gather end face (301) be contacted with described housing (1) inwall arrange；
And
One differential system (4) electrically connected with described sound transducer (3), described differential system (4)
The fetal rhythm message that end face (302) gathers is gathered for gathering end face (301) and second to described first
Number carry out difference processing.
Intelligence fetal heart sound monitor the most according to claim 1, it is characterised in that described intelligence
Fetal heart sound monitor also includes doing in the fetal heart sound signal processed by described differential system (4)
Disturb the wave filter (6) that tone signal carries out filtering, an amplification amplified for the fetal heart sound signal that will filter
Device (7), one for the wireless transport module (8) sent by the fetal heart sound signal of amplification.
Intelligence fetal heart sound monitor the most according to claim 2, it is characterised in that described filtering
Device (6) includes what the interference tones signal outside the frequency range to fetal heart sound signal and in frequency band filtered successively
First wave filter (601) and the second wave filter (602).
Intelligence fetal heart sound monitor the most according to claim 3, it is characterised in that described intelligence
Fetal heart sound monitor also include one for power supply rechargable power supplies (11), and all with described power supply (11)
The quick-charging circuit connected and discharge protection circuit.
5. according to the arbitrary described intelligent fetal heart sound monitor of Claims 1 to 4, it is characterised in that institute
The opening stating the radius of housing (1) bigger is coated with silicone gasket (9), described housing (1)
A branch of band (10) it is provided with in the middle part of outer wall.
6. according to the arbitrary described intelligent fetal heart sound monitor of Claims 1 to 4, it is characterised in that institute
Stating lid (2) and be provided with switch hole (201), described switch hole is provided with press button in (201)
(13)。
Intelligence fetal heart sound monitor the most according to claim 2, it is characterised in that described intelligence
Fetal heart sound monitor also includes one for fetal heart sound signal carries out the after-treatment system (15) of post processing,
Described after-treatment system (15) includes one for coordinating the described wireless transport module of acceptance (8) to send
The wireless reception module (151) of fetal heart sound signal, one for accepting wireless reception module (151)
Fetal heart sound signal is processed as the heart rate processing module (152) of Fetal Heart Rate.
Intelligence fetal heart sound monitor the most according to claim 7, it is characterised in that described heart rate
Processing module (152) includes one in fetal heart sound signal wireless reception module (151) accepted
Interference tones signal carries out the filter unit (152a) filtered, and one for by described filter unit (152a)
The fetal heart sound signal filtered carries out the peak detection unit (152b) of peakvalue's checking, and one for by described peak
Time domain average unit (152c) that peak value time domain average is Fetal Heart Rate that value detector unit (152b) detects.
Intelligence fetal heart sound monitor the most according to claim 8, it is characterised in that place after described
Reason system (15) also includes one for the fetal heart sound signal that filtered by described filter unit (152a)
Signal procesing in time domain is spectroscopy processing module (153) and a warning module (154) of spectrogram, described
Warning module (154) is for judging when the Fetal Heart Rate obtained and spectrogram are as carrying out early warning time abnormal.
10. according to the arbitrary described intelligent fetal heart sound monitor of Claims 1 to 4, it is characterised in that
Described housing (1) is stainless steel, and described lid (2) is PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620056326.0U CN205597949U (en) | 2016-01-21 | 2016-01-21 | Intelligence fetal heart sound monitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620056326.0U CN205597949U (en) | 2016-01-21 | 2016-01-21 | Intelligence fetal heart sound monitor |
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| CN205597949U true CN205597949U (en) | 2016-09-28 |
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| CN201620056326.0U Expired - Fee Related CN205597949U (en) | 2016-01-21 | 2016-01-21 | Intelligence fetal heart sound monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491116A (en) * | 2016-11-11 | 2017-03-15 | 深圳市响音科技有限公司 | A kind of passive type fetal rhythm detecting system and detection method |
-
2016
- 2016-01-21 CN CN201620056326.0U patent/CN205597949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106491116A (en) * | 2016-11-11 | 2017-03-15 | 深圳市响音科技有限公司 | A kind of passive type fetal rhythm detecting system and detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20200121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |