CN209220291U - Noninvasive fetal hemoglobin saturation detection device outside abdomen - Google Patents

Abstract

Noninvasive fetal hemoglobin saturation detection device outside a kind of abdomen, including fetus BOLD contrast outside abdomen and the signal detection component being connect with fetus BOLD contrast outside abdomen, the outer fetus BOLD contrast of the abdomen includes signal processing controller, the signal detection component includes illuminating source device, the optical receiver apparatus includes the multiple optical receivers for being separately positioned on multiple and different positions outside pregnant woman's abdomen, it further include the adder being connect with multiple optical receivers, adder is connect with the signal processing controller of the outer fetus BOLD contrast of abdomen, optical receiver apparatus acquires multiple optical signals relevant to fetal hemoglobin saturation scattering and be reflected back out of pregnant woman abdomen by multiple optical receivers, and optical signal summation relevant to fetal hemoglobin saturation is exported after adder is superimposed to signal processing controller, to improve the intensity of the optical signal received.

Description

Noninvasive fetal hemoglobin saturation detection device outside abdomen

Technical field

The utility model relates to the blood oxygen saturation detection technique fields in Medical Devices, more specifically to one kind Noninvasive fetal hemoglobin saturation detection device outside abdomen.

Background technique

Later stage of pregnancy, and can be a dangerous time phase to pregnant woman and fetus just before giving birth and the production phase.If tire Youngster's umbilical cord becomes the disease that distortion is in unfavorable position, placenta premature disengagement or certain pregnant woman and fetus, is likely to lead It causes oxygen content in fetal blood insufficient, and then causes fetus cerebral injury or death.Detecting sphygmus and blood oxygen saturation is used on clinical medicine (SaO2) this physical signs carrys out indirect monitoring human body, including the oxygen content in fetal blood.

Currently, fetal heart frequency, heart sound patient monitor have been widely used in the monitoring of fetus physiological status.In view of the confession of fetus Oxygen is not breathed by fetus itself and is obtained, but is conveyed by parent from placenta, and the blood oxygen saturation of fetus more acurrate can reflect Oxygen concentration in blood, to be the physical signs for more directly reflecting fetal life state.Detect facing for the SaO2 of fetus Bed meaning is, directly reflects the oxygenation of fetus, makes a definite diagnosis fetus in female intracorporal life state, to reduce peri-natal infant with this The death rate and neonatal disability rate.2000 Nian You u s companies, which produced, a kind of is placed in intrauterine sensor to measure The instrument of fetal hemoglobin saturation, medical staff need instrument to go deep into the intrauterine of pregnant woman, directly take blood from fetus body surface Obtain the blood oxygen saturation index of fetus.These methods and instrument are not suitable for for a long time, continuously to the inspection of fetal hemoglobin saturation It surveys, is less suitable for the perinatal monitoring of fetus.Due to being saturated currently without the blood oxygen of effective non-intruding mode detection fetus The instrument and equipment of degree, medical staff can only often rely on fetal heart rate monitor device.And the fetal rhythm monitoring being widely used at present, though The asphyxia of the sensitive detection fetus of energy, but its specificity is lower, cannot reflect asphyxia omen in advance.Due to the specificity of fetal rhythm monitoring It is lower, cause doctor lack fetus integrality is fully realized, than such as whether need practise caesarean operation, when start It practises caesarean operation, it is necessary to urgent medical decision making is made in the case where not abundant knowledge, thus on the one hand, doctor may be wrong Wrong diagnosis affects the opportunity for taking necessary means adversely；On the other hand, doctor is often too cautious, causes many unnecessary cut open the belly It produces surgical intervention to increase, not only increase operation risk and pregnant woman childbirth complication, but also the following unnecessary great number Medical expense also adds the financial burden of society with family.

Inventor herein is in Chinese patent ZL201310182965.2 (fetal hemoglobin saturation detection system and method) In provide a kind of detection system and method that fetus detecting sphygmus and blood oxygen saturation is monitored in a manner of non-intruding, for the first time using setting It is placed on the external fetus detecting sphygmus and blood oxygen saturation photoelectric sensor of pregnant woman, is goed deep into pregnant woman's abdomen without any in the detection process Operation, it is not necessary that photoelectric sensor to be applied to the privileged site of fetus, to be truly realized noninvasive fetal blood oxygen saturation outside abdomen Degree detection, the two important fetus physiological parameters can be supplied to simultaneously the blood oxygen saturation of heart rate and fetus to fetus Medical staff has very high Practical significance to fetus, pregnant woman and society.The utility model is researched and developed in fact according to above-mentioned patent The new invention further generated during existing specific product.Applicants have discovered that since fetus is in the intrauterine position (tire of mother Position) there is very big uncertainty, the position of foetus of different pregnant woman is different, and same pregnant woman changes in the position of foetus of different stages of gestation Very big, fetus can also change at any time in intrauterine posture, and the blood oxygen saturation of fetus different parts is also different, therefore, when It is applied to outside pregnant woman's abdomen using the photoelectric sensor of the fetus SaO2 detection system of Chinese patent (ZL201310182965.2) When one privileged site, there are biggish uncertainties for the photosignal relevant to fetus SaO2 sensed, this is uncertain Property directly influence the specificity of testing result, i.e., when testing result shows positive (blood oxygen saturation is relatively low), fetus is practical SaO2 be normal.The consequence of such case may result in unnecessary human intervention or even surgical intervention, these are dry The increase of medical treatment cost and medical-risk can be caused in advance, while also will increase the pain of mother and baby.It can be seen that noninvasive fetus outside abdomen The realistic problem that blood oxygen saturation detection faces is how to solve the problems, such as the uncertain influence to testing result of the position of foetus, Another problem is exactly the attenuation problem of light, and the received optical signal of optical receiver must be intraperitoneal to its from pregnant woman's abdomen external exposure Fetus, then from fetus multigravida abdominal cavity back to the light of the specific wavelength outside pregnant woman's abdomen, it is received from being issued to, need to be by very Long light path, and the decaying of light and light path is square directly proportional.In addition, optical receiver receive with fetal hemoglobin saturation phase The optical signal of pass is to organize the complexity such as (such as skin, fat, uterus, amniotic fluid) absorption, reflection, scattering through fetal tissue, pregnant woman Extremely faint light after process, weak degrees are enough to threaten noninvasive fetal hemoglobin saturation inspection outside the success and abdomen of detection The practicability of survey.Therefore, the outer noninvasive blood oxygen saturation detection device of fetus of abdomen must solve optical receiver apparatus receives and fetus The problem of the problem of blood flow relevant signal strength and signal interference, improves signal strength and removes noise jamming, improves noise Than.For this purpose, to research and develop successfully the noninvasive blood oxygen saturation detection device of the outer fetus of abdomen, it is necessary to while above-mentioned two problem is solved, in It is the problem of luminous and optical receiver receives signal strength relevant to fetus blood flow as the pass that can solve the two problems Key.

The applicant also found that the outer noninvasive blood oxygen saturation monitoring system of fetus of abdomen must have enough power under study for action Light is radiated at the abdomen of pregnant woman, just can guarantee that optical receiver receives effectively optical signal relevant to fetus, however if one Taste increases the luminous power of light source, is based on light-emitting component used at present (such as LED, laser), light-emitting area all very littles, and Usually it is close to the skin of pregnant woman, a possibility that feeling under the weather or burnt there are skin of pregnant women in use.According to it is international it is non-from The sub- radiation protection committee (International Commission of Nob-Ionizing Radiation Protection, ICNIRP) publications in 2000 years file it is found that wavelength in 400nm to the LED light wave of 1400nm range, it is several The optical power of milliwatt continues 100 seconds, can cause to burn to skin.Therefore, the practicability of the detection device and comfortable is improved Property, the risk hidden danger for excluding the ray radiation injury of topical burn is also very important.

Summary of the invention

The purpose of this utility model is to provide a kind of optical signals relevant to fetal hemoglobin saturation for improving and receiving Noninvasive fetal hemoglobin saturation detection device outside the abdomen of intensity.

To achieve the above object, the utility model adopts the technical scheme that

Noninvasive fetal hemoglobin saturation detection device outside a kind of abdomen, including outside abdomen fetus BOLD contrast and with fetus blood oxygen outside abdomen The signal detection component of instrument connection, the outer fetus BOLD contrast of the abdomen includes signal processing controller, the signal detection group Part includes illuminating source device, for acquiring the light-receiving dress of optical signal relevant to fetal hemoglobin saturation outside pregnant woman's abdomen It sets, and any one in fetal heart rate signal, maternal heart rate signal and pregnant woman's detecting sphygmus and blood oxygen saturation optical signal for acquiring The reference signal detection device of a or multiple signals, illuminating source device, optical receiver apparatus and reference signal detection device with Signal processing controller connection, the illuminating source device irradiate two or more different wave lengths into pregnant woman's abdomen Light；The optical receiver apparatus includes the multiple optical receivers for being separately positioned on multiple and different positions outside pregnant woman's abdomen, further include with The adder of multiple optical receiver connections, adder are connect with the signal processing controller of the outer fetus BOLD contrast of abdomen, light-receiving dress It sets and acquires multiple light letters relevant to fetal hemoglobin saturation scattering and be reflected back out of pregnant woman abdomen by multiple optical receivers Number, and optical signal summation relevant to fetal hemoglobin saturation is exported to signal processing controller after adder is superimposed.

It further, further include the multiple amplifiers being connect respectively with multiple optical receivers, multiple amplifiers and adder connect It connects, adder is connect by digital analog converter with the signal processing controller of the outer fetus BOLD contrast of abdomen.

Further, further include the multiple amplifiers being connect respectively with multiple optical receivers, connect respectively with multiple amplifiers Multiple digital analog converters, multiple digital analog converters connect with adder, the signal processing of adder and the outer fetus BOLD contrast of abdomen Controller connection.

Further, including being integrated with the fetus blood oxygen light signal acquisition device of illuminating source device and optical receiver apparatus, tire Youngster's blood oxygen light signal acquisition device includes optical sensor installing mechanism, and the optical sensor installing mechanism integrated installation has luminous Light supply apparatus and optical receiver apparatus including multiple optical receivers.

Further, the illuminating source four of illuminating source device is arranged in multiple optical receivers of the optical receiver apparatus Mono- circle of Zhou Zucheng.

Further, the four of the illuminating source of illuminating source device are arranged in multiple optical receivers of the optical receiver apparatus Zhou Zucheng mono- rectangular；Or multiple optical receivers of the optical receiver apparatus constitute the array of 1 i row * j column and setting exists The side of the illuminating source of illuminating source device, i and j are the integer greater than 0；Or multiple light of the optical receiver apparatus Receiver constitutes the array of 2 i row * j column and is separately positioned on the two sides of the illuminating source of illuminating source device, and i and j are big In 0 integer.

Further, the fetus blood oxygen light signal acquisition device further includes the pulse sequence emitted by illuminating source device The conducting switch of the signal control of generation, the received optical signal of each optical receiver of optical receiver apparatus pass through after being converted into electric signal The conducting switch is crossed, so that shining for illuminating source device is synchronous with being by the received optical signal of conducting switch, only There is the optical signal in the luminous synchronous burst pulse time with radiant device that can just be sent to the analog-to-digital conversion of optical receiver apparatus Device is transformed into digital signal and is further processed.

Further, the fetus blood oxygen light signal acquisition device is to be capable of fixing installation illuminating source device and including more The optical receiver apparatus of a optical receiver and it is capable of fixing the soft component wrapped in her abdominal on her abdominal simultaneously.

Further, the illuminating source device includes illuminating source and the light source drive that connect with illuminating source, described Illuminating source include multiple first luminescence units and multiple second luminescence units, multiple first luminescence units can issue The feux rouges or infrared light of one wavelength, multiple second luminescence units can issue the feux rouges or infrared light of second wave length, first wave Length is different from second wave length, and the quantity of the first luminescence unit and the second luminescence unit is identical, multiple first luminescence units and multiple Second luminescence unit is arranged to ranks light source battle array, and the first luminescence unit and the second luminescence unit are handed in every row of ranks light source battle array It is also arranged alternately for the first luminescence unit in each column of setting and ranks light source battle array and the second luminescence unit, multiple first is luminous single First and multiple second luminescence units are alternately lighted under the control of light source drive.

The optical receiver apparatus of noninvasive fetal hemoglobin saturation detection device passes through multiple light-receivings outside the abdomen of the utility model Device 204 acquires multiple optical signal superposition synthesis optical signal summations relevant to fetal hemoglobin saturation to improve the light received letter Number intensity.In addition, optical receiver apparatus 91 realizes that structure is simply at low cost, is not necessarily to by multiple optical receivers 204 and adder Fetus BOLD contrast outside existing abdomen is improved.In addition, by by multiple optical receivers 204 of optical receiver apparatus 91 and shine The rational deployment of light supply apparatus 92 such as makes multiple optical receivers 204 be laid in the surrounding of illuminating source device 92 at circle, can Reasonable utilization light source improves the signal strength that optical receiver apparatus 91 acquires.In particular, illuminating source device 92 is using multiple the The ranks light source battle array that one luminescence unit and multiple second luminescence units are constituted, so that the illumination of light source and adopting for optical receiver 204 Collection is multiple spot and does not also require to correspond, and increases unit area, substantially increase in the signal received with tire The intensity of the relevant optical signal of youngster's blood flow.

Detailed description of the invention

Fig. 1 is the structural block diagram of noninvasive fetal hemoglobin saturation detection device outside the utility model abdomen；

Fig. 2 is the structural schematic diagram of noninvasive fetal hemoglobin saturation detection device outside the utility model abdomen；

Fig. 3 is the structural schematic diagram of the utility model fetus blood oxygen light signal acquisition device；

Fig. 4-5 is the structure chart of two embodiments of the utility model optical receiver apparatus；

Fig. 6-11 is multiple optical receivers of the utility model fetus blood oxygen light signal acquisition device and the cloth of illuminating source The structure chart of six embodiments of office's structure；

Figure 12-14 is three implementations of the layout structure of the luminescence unit of the illuminating source of the utility model optical receiver apparatus The structure chart of example；

Figure 15 is the structural schematic diagram of the utility model illuminating source device；

Figure 16 is the another example structure figure of the utility model optical receiver apparatus；

Figure 17 is the block diagram of one embodiment of 250 signal processing flow of primary processor shown in Figure 16；

Figure 18 is the block diagram of another embodiment of 250 signal processing flow of primary processor shown in Figure 16；

Figure 19 is the block diagram of another embodiment of the signal processing flow of primary processor 250 shown in Figure 16；

Figure 20 is one embodiment of the addition selector of the optical receiver apparatus of Figure 16；

Figure 21 is another embodiment of the addition selector of the optical receiver apparatus of Figure 16.

Specific embodiment

Below in conjunction with the embodiment that attached drawing 1 to 21 provides, noninvasive fetus blood oxygen outside the abdomen of the utility model is further illustrated The specific embodiment of saturation degree detection device.

As shown in Figure 1, the utility model relates to abdomen outside noninvasive fetal hemoglobin saturation detection device generally include outside abdomen Fetus BOLD contrast and the signal detection component being connect with fetus BOLD contrast outside abdomen.The outer fetus BOLD contrast of abdomen includes signal processing control Device 11；The signal detection component includes the hair for irradiating the light of two or more different wave lengths into pregnant woman's abdomen Radiant device 92, for acquiring the optical receiver apparatus 91 of optical signal relevant to fetal hemoglobin saturation outside pregnant woman's abdomen, with And for acquiring any one in fetal heart rate signal, acquisition maternal heart rate signal and pregnant woman's detecting sphygmus and blood oxygen saturation optical signal Or the reference signal detection device of multiple signals.The reference signal detection device includes for acquiring fetus outside pregnant woman's abdomen The fetal rhythm acquisition device of heart rate signal, and/or the maternal heart rate acquisition device of acquisition maternal heart rate signal, and/or acquisition pregnant woman's arteries and veins Pregnant woman's detecting sphygmus and blood oxygen saturation acquisition device of blood oxygen saturation of fighting optical signal, the optical receiver apparatus 91, illuminating source dress Set 92, fetal rhythm acquisition device, maternal heart rate acquisition device and pregnant woman's detecting sphygmus and blood oxygen saturation acquisition device with signal processing control Device 11 processed connects；Signal processing controller 11 is based on fetus according to the optical signal relevant to fetal hemoglobin saturation of acquisition One or more signals in heart rate signal, maternal heart rate signal and pregnant woman's detecting sphygmus and blood oxygen saturation optical signal calculate fetus arteries and veins It fights blood oxygen saturation.

The utility model relates to the blood flow in pregnant woman in-vitro measurements fetus blood oxygen saturation detection technique, detecting It is not necessarily to any operation goed deep into pregnant woman's abdomen in the process, it is initiative it is not necessary that photoelectric sensor to be applied to the privileged site of fetus Ground realizes the specific solution for the problem of detecting without fetal hemoglobin saturation noninvasive outside intrusive abdomen, including how conversion process signal Certainly scheme discloses in the previous patent of invention CN201310182965.2 of the present inventor, is not repeating again.

As Figure 2-3, outside the abdomen of the utility model noninvasive fetal hemoglobin saturation detection device one embodiment, packet The fetus blood oxygen light signal acquisition device 9 for including the outer fetus BOLD contrast of abdomen and being connect with fetus BOLD contrast outside abdomen；The outer fetus blood oxygen of abdomen Instrument includes signal processing controller 11, and the display module 12 and operation module 13 that connect with signal processing controller 11；Institute Stating fetus blood oxygen light signal acquisition device 9 includes optical sensor installing mechanism 93, and the optical sensor installing mechanism 93 is integrated Illuminating source device 92 and the optical receiver apparatus 91 including multiple optical receivers 204 are installed, by illuminating source device 92 and light Reception device 91 integrates the acquisition device for constituting acquisition fetus blood oxygen optical signal.The fetus blood oxygen light signal collection Device 9 can be wrapped tightly illuminating source device 92 and optical receiver apparatus 91 on her abdominal body surface in a manner of abutting, and can To be adjusted by fetus shift position；Preferably, fetus blood oxygen light signal acquisition device 9 is to be capable of fixing installation illuminating source Device 92 and optical receiver apparatus 91 including multiple optical receivers 204 and it is capable of fixing wrapping in pregnant on her abdominal simultaneously The soft component of woman's abdomen.It is tied up to as the optical sensor installing mechanism 93 of fetus blood oxygen light signal acquisition device 9 can be one The waistband of her abdominal, a wearable abdomen scarf, stomacher or other illuminating source device 92 can be installed and including more The optical receiver apparatus 91 of a optical receiver 204 and the device that her abdominal can be fixed on.The fetus blood oxygen optical signal Acquisition device 9 is connect by communication link 14 with the outer fetus BOLD contrast of abdomen, and communication link 14 can be expired air and be also possible to Wireless link.WIFI, bluetooth and other wireless communication protocols can be used in wireless link.Display module 12 can be LED screen, LCD Screen or touch screen, operation module 13 can be keyboard.

Further, noninvasive fetal hemoglobin saturation detection device further includes fetal rhythm acquisition device (not shown) outside abdomen, Fetus blood oxygen light signal acquisition device 9 combines fetus blood oxygen probe or fetal rhythm outside composition abdomen together with fetal rhythm acquisition device and adopts Acquisition means, which are also integrated on the optical sensor installing mechanism 93 of fetus blood oxygen light signal acquisition device 9, constitutes the outer fetus blood oxygen spy of abdomen Head, for acquiring the various signals that fetus BOLD contrast needs outside abdomen, the outer fetus blood oxygen probe of abdomen passes through outside communication link 14 and abdomen Fetus BOLD contrast 1 connects.Such as a kind of embodiment is fetus blood oxygen light signal acquisition device 9 and fetal rhythm acquisition device is two only Vertical acquisition device constitutes the outer fetus blood oxygen probe of abdomen, fetus blood oxygen light signal acquisition device 9 and fetal rhythm acquisition device point together It is not connect with fetus BOLD contrast 1 outside abdomen, the outer fetus BOLD contrast 1 of the abdomen is equipped with the optical signal connecting with optical receiver apparatus 91 Interface, the illuminating source interface being connect with illuminating source device 92, the fetal heart frequency detection interface being connect with fetal rhythm acquisition device, Illuminating source device 92, optical receiver apparatus 91 and fetal rhythm acquisition device pass through optical signal link, illuminating source link and tire respectively Youngster's heart rate signal link is connect with optical signal interface, illuminating source interface and fetal heart frequency detection interface, and optical signal link shines Optical source link and fetal heart rate signal link can be wired or wireless on-link mode (OLM), and WIFI, bluetooth can be used in wireless link With other wireless communication protocols.Such as another embodiment is the illuminating source device 92 of fetus blood oxygen light signal acquisition device 9 It is integrated on optical sensor installing mechanism 93 with optical receiver apparatus 91 and fetal rhythm acquisition device and constitutes the outer fetus blood oxygen spy of abdomen Head, the outer fetus BOLD contrast 1 of the abdomen are equipped with the first wireless transmitter receiver device, the optical signal interface of the outer fetus BOLD contrast 1 of abdomen, Illuminating source interface and fetal heart frequency detection interface are connect with the first wireless transmitter receiver device respectively, optical sensor installing mechanism 93 It is equipped with the second wireless transmitter receiver device, illuminating source device 92, optical receiver apparatus 91 and fetal rhythm acquisition device are respectively with second Wireless transmitter receiver device connection, by the second wireless transmitter receiver device, the first wireless transmitter receiver device link and abdomen outside fetus BOLD contrast 1 connects.Further, the outer fetus blood oxygen probe of abdomen can also include maternal heart rate acquisition device and/or pregnant woman's pulse blood oxygen Saturation degree acquisition device (not shown).

One of one improvement of the utility model, the signal processing controller 11 control illuminating source device 92 to The light of the two or more different wave lengths of irradiation in pregnant woman's abdomen, the optical receiver apparatus 91 include being separately positioned on pregnant woman Multiple optical receivers 204 of multiple and different positions outside abdomen, optical receiver apparatus 91 are acquired multiple from pregnant by multiple optical receivers 204 Scattering and the optical signal relevant to fetal hemoglobin saturation being reflected back in woman's abdomen, and output and fetal hemoglobin saturation after superposition Relevant optical signal summation is exported to signal processing controller 11.The optical receiver apparatus 91 of the utility model includes being separately positioned on Multiple optical receivers 204 of multiple and different positions outside pregnant woman's abdomen, optical receiver apparatus 91 acquire it is multiple it is being returned out of pregnant woman abdomen with The relevant optical signal of fetal hemoglobin saturation, and superposition is aggregated into optical signal summation and sends signal processing controller 11 to；It is described The optical signal summation that is exported according to optical receiver apparatus 91 of signal processing controller 11, and adopted according to from reference signal detection device Any one or more signals in the fetal heart rate signal of collection, maternal heart rate signal and pregnant woman's detecting sphygmus and blood oxygen saturation optical signal To calculate fetal hemoglobin saturation.The optical receiver apparatus 91 of the utility model acquires multiple and tire by multiple optical receivers 204 The relevant optical signal of youngster's blood oxygen saturation, multiple signals of acquisition is overlapped to summarize sends signal processing controller 11 to, Effectively increase the intensity of optical signal relevant to fetus blood flow in the signal received.The optical receiver 204 is silicon light Electric diode, avalanche type photoelectric diode, photomultiplier tube or other electrooptical devices；The luminous lighting module 12 wraps The light source for including at least two different wave lengths can be the feux rouges at 500 nanometers to 1000 nanometers of infrared lights, wherein preferably 660 Nanometer, 740 nanometers, 880 nanometers, 940 nanometers, illuminating source are LED or laser or other illuminating sources.

As illustrated in figures 4-5, the optical receiver apparatus 91 include multiple optical receivers 204 and with multiple optical receivers 204 The adder of connection, adder are connect with the signal processing controller 11 of the outer fetus BOLD contrast of abdomen.Each optical receiver 204 connects respectively The optical signal relevant to fetal hemoglobin saturation returned out of pregnant woman abdomen is received, and each optical signal is converted into multi-channel electric signal, Output optical signal summation relevant to fetal hemoglobin saturation is exported at signal after multi-channel electric signal is overlapped by adder Controller 11 is managed, optical receiver apparatus 91 realizes that structure is simply at low cost by multiple optical receivers 204 and adder, is not necessarily to pair The outer fetus BOLD contrast of existing abdomen improves.

As shown in figure 4, one embodiment of the utility model optical receiver apparatus 91, optical receiver apparatus 91 includes that multiple light connect Device 204, the multiple amplifiers connecting respectively with multiple optical receivers 204 are received, multiple amplifiers are connect with adder, and adder is logical Digital analog converter is crossed to connect with the signal processing controller 11 of the outer fetus BOLD contrast of abdomen.Each optical receiver 204 is received respectively from pregnant The optical signal relevant to fetal hemoglobin saturation returned in woman's abdomen, and each optical signal is converted into multi-channel electric signal, Multi-path electricity Signal is defeated in the optical signal summation Jing Guo digital analog converter digital signal after adder is superimposed together after amplifier is put into Out to signal processing controller 11.

As shown in figure 5, another embodiment of the utility model optical receiver apparatus 91, optical receiver apparatus 91 includes multiple light Receiver 204, the multiple amplifiers being connect respectively with multiple optical receivers 204, the multiple numbers being connect respectively with multiple amplifiers Mode converter, multiple digital analog converters are connect with adder, the signal processing controller 11 of adder and the outer fetus BOLD contrast of abdomen Connection.After each optical signal is converted into multi-channel electric signal by each optical receiver 204, respectively through amplifier amplifies signals and by digital-to-analogue After converter is converted to digital signal, then optical signal summation is superimposed as by adder and is exported to signal processing controller 11.

One of one improvement of the utility model, the fetus blood oxygen light signal acquisition device 9 is by illuminating source device 92 and the optical receiver apparatus 91 including multiple optical receivers 204 integrate, not only make its easy to use so that Layout before illuminating source device 92 and multiple optical receivers 204 is more reasonable, and the path of acquisition scattering and reflection is closer, Can reasonable utilization light source, improve optical receiver apparatus 91 acquire signal strength.

As shown in fig. 6,9 one preferred embodiments of fetus blood oxygen light signal acquisition device of the utility model, the light The multiple optical receivers 204 and illuminating source device 92 of reception device 91 are mounted on sensor attachment mechanism 93, the light The surrounding that the illuminating source 921 of illuminating source device 92 is arranged in multiple optical receivers 204 of reception device 91 forms a circle Shape.Preferably, optical sensor installing mechanism 93 is capable of forming dome-shaped and is buckled in her abdominal, the luminous light of illuminating source device 92 Source, which is located in the middle part of dome-shaped, is located at her abdominal top central portion, and multiple optical receivers 204 of optical receiver apparatus 91 are in her abdominal For side surrounding at a circle, illuminating source and multiple optical receivers 204 constitute dome-shaped, by by the more of optical receiver apparatus 91 921 rational deployment of illuminating source of a optical receiver 204 and illuminating source device 92, can reasonable utilization light source, improve light The signal strength that reception device 91 acquires.

As shown in fig. 7,9 another preferred embodiment of fetus blood oxygen light signal acquisition device of the utility model, described 921 surrounding of illuminating source that illuminating source device 92 is arranged in multiple optical receivers 204 of optical receiver apparatus 91 forms a side Shape.

Multiple optical receivers 204 of several embodiments as illustrated in figs. 8-11, the optical receiver apparatus 91 constitute 1 i The array of row * j column and be arranged in illuminating source device 92 illuminating source 921 side, i and j are the integer greater than 0；Or Multiple optical receivers 204 of optical receiver apparatus 91 described in person constitute the array of 2 i row * j column and are separately positioned on illuminating source 921 two sides of illuminating source of device 92, i and j are the integer greater than 0.

Further, 9 another preferred embodiment of fetus blood oxygen light signal acquisition device of the utility model, the fetus Blood oxygen light signal acquisition device 9 further includes that the conducting for the signal control that the pulse sequence emitted by illuminating source device 92 generates is opened It closing, the received optical signal of each optical receiver 204 of optical receiver apparatus 91 switchs after being converted into electric signal by the conducting, So that illuminating source device 92 shine with by conducting switch received optical signal be it is synchronous, only with illuminating source device The analog-digital converter that optical signal in the burst pulse time of 92 luminous synchronization can just be sent to optical receiver apparatus 91 is transformed into number Word signal is further processed.

One of one improvement of the utility model, the illuminating source device 92 of the utility model include illuminating source 921 With the light source drive being connect with illuminating source 921.The light source drive is connect with signal processing controller, light source drive Pulsed light of the driving illuminating source 921 sending frequency higher than 20Hz under the control of signal processing controller, and its pulse Duty ratio is less than 40%.The frequency range of the preferred pulsed light is 400Hz to 5000Hz, but do not include 50Hz, 60Hz and The frequency of their integral multiple.The illuminating source device 92 of the utility model uses the pulsed optical signals with smaller duty ratio, So that average light power received by human body is significantly smaller than moment maximum luminous power to ensure human-body safety, believe improving While number intensity, solve the problems, such as that excessive luminous power may cause injury to pregnant woman and fetus.The light source of the present embodiment The illuminating source 921 that driver can be used for having single first luminescence unit and single second luminescence unit, can be used for Illuminating source 921 with multiple first luminescence units and multiple second luminescence units.

One of one improvement of the utility model, the illuminating source device of the utility model include 921 He of illuminating source The light source drive connecting with illuminating source 921, the illuminating source 921 include multiple first luminescence units and multiple second Luminescence unit, multiple first luminescence units can issue the feux rouges or infrared light of first wave length, and multiple second luminescence units are equal The feux rouges or infrared light of second wave length can be issued, first wave length is different from second wave length, and the first luminescence unit and second shines The quantity of unit is identical, and multiple first luminescence units and multiple second luminescence units are arranged to ranks light source battle array, and multiple first Luminescence unit and multiple second luminescence units are alternately lighted under the control of light source drive.Multiple first hairs in ranks light source battle array Light unit and multiple second luminescence units can be at equal intervals, be also possible to unequal spacing, it is preferable that each in ranks light source battle array The spacing of luminescence unit is equal.The illuminating source device 92 of the utility model is using multiple first luminescence units and multiple the Two luminescence units, and multiple first luminescence units and multiple second luminescence units are arranged as equidistant ranks light source battle array, it is real Now a wide range of multichannel to be to increase the luminous power of light source, while illumination is not a bit, make to receive and fetal hemoglobin saturation Relevant optical signal is greatly reinforced than original device, but the true very little of optical power received by her abdominal skin unit area or not Increase.Preferably, the illuminating source device 92 includes that the first luminescence unit of at least two and at least two second are luminous single Member.First luminescence unit and the second luminescence unit be the LED that can issue feux rouges or infrared light, laser or other Light source, can preferably issue 600 nanometers of feux rouges to 950 nanometers of infrared lights LED or laser, if first wave length is red Then second wave length is infrared light to light, if first wave length is infrared light, second wave length is feux rouges.Multiple first luminescence unit hairs The first wave length of feux rouges or infrared light out is preferably identical, but is actually extremely difficult to, therefore, multiple first luminescence units The feux rouges or infrared light of the first wave length of the feux rouges or infrared light of sending refers to essentially identical, in lesser deviation range i.e. Can, belong to the protection scope of the application.Equally, the second wave length of multiple second luminescence units issue feux rouges or infrared light It is similar.

As shown in figure 12, the illuminating source 921 of illuminating source device 92 include multiple first luminescence units equidistantly or not Arrangement constitutes the first ranks light source battle array of a m*n at equal intervals, and multiple second luminescence units are equidistant or the cloth of unequal spacing The the second ranks light source battle array for constituting a m*n is set, n is the integer greater than 1, and m is the integer more than or equal to 1.Wherein first shine Unit is red-light LED 102, R expression feux rouges in figure, the red LED array that the first ranks light source battle array is constituted for red-light LED, second Luminescence unit is infrared light LED 104, and IR indicates infrared light in figure, and the second ranks light source battle array is the infrared of infrared light LED composition Light LED array.

As shown in figure 13, the illuminating source of illuminating source device includes multiple first luminescence units and multiple second luminous lists First equidistant or unequal spacing arrangement constitutes the ranks light source battle array of m row 2*n column, and each column of ranks light source battle array is by the first hair The first luminescence unit column that light unit is constituted or the second luminescence unit column for thering is the second luminescence unit to constitute, the first luminescence unit Column and the second luminescence unit column are arranged alternately, and n is the integer greater than 1, and m is the integer more than or equal to 1, but make two different waves The mode for optical path ratio Figure 12 that long feux rouges or infrared light reaches fetus by her abdominal is more nearly.Obviously, it first shines Also possible, i.e., multiple first luminescence units and multiple second are arranged in unit and the alternate mode of the second luminescence unit sampling row Luminescence unit is equally spaced or the ranks light source battle array of the one 2*m row n of composition of unequal spacing column, every row of ranks light source battle array by The first luminescence unit row that first luminescence unit is constituted or the second luminescence unit row for thering is the second luminescence unit to constitute, the first hair Light unit row and the second luminescence unit row are arranged alternately, and n is the integer being equal to greater than 1, and m is the integer greater than 1.

As shown in figure 14, the preferred embodiment of the utility model illuminating source device, in multiple first luminescence units and more In the ranks light source battle array that a second luminescence unit is constituted, the first luminescence unit and the second luminescence unit are arranged alternately, so that ranks In every row of light source battle array the first luminescence unit and the second luminescence unit be arranged alternately and in each column of ranks light source battle array first shine Unit and the second luminescence unit are also arranged alternately, and the feux rouges or infrared light for making two different wave lengths are by her abdominal arrival fetus Optical path ratio Figure 13 be more nearly, substantially increase optical receiver apparatus 91 acquire signal intensity and precision.

Further, as shown in figure 15, the preferred embodiment of the utility model illuminating source device, in illuminating source 921 The light that the ranks light source battle array that multiple first luminescence units and multiple second luminescence units are arranged to is externally provided with diffusion irradiated area expands Lens 922 are dissipated, can not increase the light radiation on unit illuminated area when increasing the luminous power of luminescence unit.Preferably, The light diverging lens 922 is concavees lens, and concavees lens are greater than with the distance between the first luminescence unit and the second luminescence unit 0；Alternatively, the light diverging lens is convex lens, concavees lens and the distance between the first luminescence unit and the second luminescence unit Focal length greater than 0 and less than or equal to convex lens.

Further, the preferred embodiment of the fetus blood oxygen light signal acquisition device of the utility model, by the utility model Optical receiver apparatus 91 including multiple optical receivers 204 is combined with the illuminating source device 92 that ranks light source battle array is laid out.Such as one kind The illuminating source device 92 of preferred embodiment, 91 sum of optical receiver apparatus is mounted on optical sensor installing mechanism 93, illuminating source dress The illuminating source for setting 92 includes ranks light source battle array that multiple first luminescence units and multiple second luminescence units are constituted, in ranks light Source battle array, the first luminescence unit and the second luminescence unit be arranged alternately so that in every row of ranks light source battle array the first luminescence unit and Second luminescence unit is arranged alternately and the first luminescence unit and the second luminescence unit are also arranged alternately in each column of ranks light source battle array, And surrounding one circle of composition of illuminating source device 92 is arranged in multiple optical receivers 204 of the optical receiver apparatus 91, Optical sensor installing mechanism 93 is capable of forming dome-shaped and is buckled in her abdominal, and the illuminating source of illuminating source device 92 is located at circular arch Be located at her abdominal top central portion in the middle part of shape, multiple optical receivers 204 of optical receiver apparatus 91 her abdominal side surrounding at One circle, illuminating source and multiple optical receivers 204 constitute dome-shaped.This makes the illumination of light source and optical receiver 204 Acquisition is multiple spot and does not also require to correspond, and increases unit area, and the feux rouges or red of two different wave lengths Outer light is close by the optical path that her abdominal reaches fetus, substantially increases light relevant to fetus blood flow in the signal received The intensity of signal.

As shown in figure 16, another improvement of the utility model, the optical receiver apparatus 91 of the utility model include multiple Optical receiver 204, the signal primary processor 250 connecting with multiple optical receivers 204, signal primary processor 250 include connecing The interface for receiving fetal heart rate signal, for connecting with fetal rhythm acquisition device, primary processor 250 passes through multiple optical receivers 204 Multiple optical signals relevant to fetal hemoglobin saturation are received, is obtained by fetal rhythm acquisition device while the fetal heart frequency acquired is believed Number, primary processor 250 by received multiple optical signals relevant to fetal hemoglobin saturation respectively with fetal heart rate signal into Row correlation analysis obtains the relative coefficient of each optical signal；The corresponding weighting system of each optical signal is obtained based on relative coefficient Number；Multiple optical signals are overlapped to obtain optical signal summation according to respective weighting coefficient.

The utility model also provides noninvasive fetal hemoglobin saturation detection signal processing method outside a kind of abdomen, by received packet Multiple optical signals of the information containing fetal hemoglobin saturation synthesize optical signal summation, to improve light relevant to fetal hemoglobin saturation The intensity of signal, removing noise jamming to improve signal-to-noise ratio can be used for optical receiver apparatus 91 comprising following steps:

Received multiple optical signals relevant to fetal hemoglobin saturation are subjected to correlation with fetal heart rate signal respectively Analysis obtains the relative coefficient of each optical signal；The corresponding weighting coefficient of each optical signal is obtained based on relative coefficient；It will be multiple Optical signal is overlapped to obtain optical signal summation according to respective weighting coefficient.Wherein, each light letter is obtained based on relative coefficient The step of number corresponding weighting coefficient are as follows: if the relative coefficient of optical signal is lower than preset relevance threshold, give up this Optical signal, i.e. weighting coefficient are 0；If relative coefficient is higher than preset relevance threshold, obtained according to relative coefficient Weighting coefficient, the more big then weighting coefficient of relative coefficient is bigger, 0 < weighting coefficient < 1；Then, by multiple optical signals according to each From weighting coefficient be overlapped to obtain optical signal summation, after such as multiple optical signals are multiplied with respective weighting coefficient respectively fold Add to obtain optical signal summation.Noninvasive fetal hemoglobin saturation signal processing method, is connect by multiple light outside the abdomen of the utility model It receives device 204 and acquires multiple optical signal superposition synthesis optical signal summations relevant to fetal hemoglobin saturation to improve the light received The intensity of signal, and the optical signal based on the acquisition of multiple optical receivers 204 carries out phase with the fetal heart rate signal acquired simultaneously The analysis of closing property is weighted superposition to remove noise signal interference unrelated with fetal hemoglobin saturation in optical signal, improves acquisition The signal-to-noise ratio of the optical signal arrived, to improve the accuracy and reliability of outer noninvasive fetal hemoglobin saturation detection device detection.

Noninvasive fetal hemoglobin saturation detects signal processing method outside the abdomen of the utility model, can be used for noninvasive fetus outside abdomen In the optical receiver apparatus 91 of blood oxygen saturation detection device, by received multiple optical signals relevant to fetal hemoglobin saturation into Optical signal summation is obtained after row selective stacking, removes noise jamming, improves signal-to-noise ratio, then will be relevant to fetal hemoglobin saturation Optical signal summation is sent to the signal processing controller 11 of the outer fetus BOLD contrast 1 of abdomen, by signal processing controller 11 by optical signal Summation and fetal heart rate signal carry out analytical calculation and obtain the blood oxygen saturation of fetus.Certainly, it is gone back by signal processing controller 11 Can be based further on optical signal summation, and acquisition maternal heart rate and/or pregnant woman's optical signal and/or fetal heart rate signal into Row analytical calculation obtains the blood oxygen saturation of fetus, another in inventor is special for the calculation of the blood oxygen saturation of fetus It is recorded in sharp CN201310182965.2, details are not described herein.It should be noted that noninvasive fetal blood outside the abdomen of the utility model Oxygen saturation detection signal processing method can also be handled by signal processing controller 11, be connect by signal processing controller 11 Optical signal summation is synthesized after receiving multiple optical signals, but the complexity of system will be greatly increased in this way.

As shown in figure 16, the optical receiver apparatus 91 of the utility model includes multiple optical receivers 204, is connect respectively with multiple light Multiple amplifiers that device 204 connects, the multiple digital analog converters connecting respectively with multiple amplifiers are received, and are turned with multiple digital-to-analogues The signal primary processor 250 of parallel operation connection, signal primary processor 250 are connect with the output end of fetal rhythm acquisition device.Each light Receiver 204 receives the optical signal in pregnant woman's abdomen respectively and converts thereof into multi-channel electric signal, turns through amplifier and modulus Parallel operation is processed into multi-path digital signal, then is synthesized after the processing of signal primary processor 250 and receives optical signal summation 256.

A kind of embodiment of the signal primary processor 250 is as shown in figure 16, including 252 He of multiple signal analyzers The addition selector 254 connecting with multiple signal analyzers 252, multiple signal analyzers 252 carry out correlation analysis, The addition selector 254 carries out the selective stacking of signal.Certainly, the signal primary processor 250 can be monolithic Machine, noninvasive fetal hemoglobin saturation detection signal processing method passes through software realization, including signal point outside the abdomen of the utility model The corresponding function of parser 252 and addition selector 254 is by software realization, and single-chip microcontroller executes corresponding software, to multiple optical signals It is analyzed and processed and is superimposed the synthesis for realizing optical signal summation.How general the fetal heart frequency sensor of fetal rhythm acquisition device can be Strangle the Fetal ECG sensor or other fetal heart frequency sensors of ultrasonic wave fetal heart sound sensor or electrode composition.As another Embodiment, the signal primary processor 250 can be single-chip microcontroller, substitute the adder of embodiment as illustrated in figures 4-5, real Embodiment shown in existing Fig. 4-5, the superposition of signal is directly carried out by software.

Figure 17 is the flow instance that a signal analyzer 252 carries out signal analysis in time domain, the signal analyzer 252 be time-domain signal analysis device, by received optical signal each relevant to fetal hemoglobin saturation in time domain and received tire Youngster's heart rate signal carries out correlation analysis and obtains the relative coefficient of each optical signal.Referring specifically to Figure 17, outside the utility model abdomen The digital signal weighted superposition synthesis of multipath light signal receives light letter in noninvasive fetal hemoglobin saturation detection signal processing method The process of number summation 256 the following steps are included:

(620) the received optical signal of optical receiver is obtained, is passed through after the received optical signal of optical receiver is converted to electric signal Digital signal is converted to after amplifier and digital analog converter processing, obtains optical signal relevant to fetal hemoglobin saturation；

(630) concurrently with step (620), the fetal heart rate signal that fetal rhythm acquisition device receives is obtained；

(622) by optical signal, the correlation analysis with fetal heart rate signal, the algorithm category of correlation analysis are carried out in time domain In the prior art, by record in general mathematics handbook, details are not described herein；

(624) relative coefficient A is calculated through correlation analysis；

(626) judge whether relative coefficient A is more than preset threshold value X, if relative coefficient A is higher than predetermined threshold X then goes to step 628, goes to step 632 if relative coefficient A is lower than predetermined threshold X；

(628) weighting coefficient M is obtained according to relative coefficient A, 0 < weighting coefficient M < 1 then goes to the step under it 634；

(632) weighting coefficient M is set as 0, then goes to the step 634 under it；

(634) optical signal relevant to fetal hemoglobin saturation is multiplied weighting with weighting coefficient M, the data E after weighting It makes a gift to someone addition selector 254.

Figure 18 is the flow instance that a signal analyzer 252 carries out signal analysis in frequency domain, the signal analyzer 252 be frequancy signal anaysis device, and received optical signal each relevant to fetal hemoglobin saturation is gone to frequency domain from time domain and is obtained To optical signal spectrum, while received fetal heart rate signal is gone into frequency domain from time domain and obtains fetus frequency domain optical power frequency spectrum, it will Optical signal spectrum carries out correlation analysis in frequency domain and fetus frequency domain optical power frequency spectrum and obtains the relative coefficient of each optical signal.Tool Body is referring to Figure 18, multi-path digital signal weight in noninvasive fetal hemoglobin saturation detection signal processing method outside the utility model abdomen Superposition synthesis receive optical signal summation 256 process the following steps are included:

(720) the received optical signal of optical receiver is obtained, is passed through after the received optical signal of optical receiver is converted to electric signal Digital signal is converted to after amplifier and digital analog converter processing, obtains optical signal relevant to fetal hemoglobin saturation, then Go to the step 722 under it；

(722) optical signal relevant to fetal hemoglobin saturation is gone into frequency domain from time domain and obtains optical signal spectrum, then Go to step 724；

(740) concurrently with step 720, the fetal heart rate signal that fetal rhythm acquisition device receives is obtained, it is then gone to Under step 742；

(742) fetal heart rate signal of input is gone into frequency domain from time domain and obtains fetus frequency domain optical power frequency spectrum, then turned Step 724 under to it；

(724) will optical signal spectrum relevant to fetal hemoglobin saturation, frequency domain and fetus frequency domain optical power frequency spectrum into Row correlation analysis；

(726) it calculates through correlation analysis in frequency domain, the relative value B of optical signal spectrum and fetus frequency domain optical power frequency spectrum As relative coefficient；

(728) judge whether relative value B is more than preset threshold value Y, turn it if relative value B is higher than predetermined threshold Y Under step 730, if relative value B lower than turning following step 744 if predetermined threshold Y；

(730) optical signal spectrum is reverted back time domain from frequency domain, then goes to the step 732 under it；

(732) it is weighted according to relative value B and obtains weighting coefficient M, 0 < weighting coefficient M < 1 then goes to the step under it 734；

(744) optical signal spectrum signal is reverted back time domain from frequency domain, then goes to the step 746 under it, certain step 744 also can be omitted；

(746) weighting coefficient M is set as 0, then goes to the step 734 under it；

(734) optical signal relevant to fetal hemoglobin saturation is weighted with weighting coefficient M, the data F after weighting makes a gift to someone Addition selector 254.

Figure 19 is another flow instance that a signal analyzer 252 carries out signal analysis in frequency domain, will be received every A optical signal relevant to fetal hemoglobin saturation goes to frequency domain from time domain and obtains optical signal spectrum, while by the received fetus heart Rate signal goes to frequency domain from time domain and obtains fetus frequency domain optical power frequency spectrum, by optical signal spectrum in frequency domain and fetus frequency domain optical power Frequency spectrum carries out correlation analysis and obtains the relative coefficient of each optical signal, and fetus spectrum power is filtered out from optical signal spectrum Signal spectrum power in addition obtains filtered optical signal frequency spectrum, to remove noise unrelated with fetal hemoglobin saturation in optical signal Signal interference, then filtered optical signal frequency spectrum is reverted back time domain from frequency domain and obtains filtered optical signal as the light of weighted superposition letter Number.Specifically, referring to Figure 19, multi-path digital in noninvasive fetal hemoglobin saturation detection signal processing method outside the utility model abdomen Signal weight superposition synthesis receive optical signal summation 256 process the following steps are included:

(720) the received optical signal of optical receiver is obtained, is passed through after the received optical signal of optical receiver is converted to electric signal Digital signal is converted to after amplifier and digital analog converter processing, obtains optical signal relevant to fetal hemoglobin saturation, then Go to the step 722 under it；

(722) optical signal optical signal relevant to fetal hemoglobin saturation is gone into frequency domain from time domain and obtains optical signal frequency Spectrum, then goes to step 724 below；

(740) concurrently with step 720, the fetal heart rate signal that fetal rhythm acquisition device receives is obtained, it is then gone to Under step 742；

(742) fetal heart rate signal of input is gone into frequency domain from time domain and obtains fetus frequency domain optical power frequency spectrum, then turned Step 724 under to it；

(724) will optical signal spectrum relevant to fetal hemoglobin saturation, frequency domain and fetus frequency domain optical power frequency spectrum into Row correlation analysis and compare；

(726) it calculates through correlation analysis in frequency domain, the relative value B of optical signal spectrum and fetus frequency domain optical power frequency spectrum As relative coefficient；

(728) judge whether relative value B is more than preset threshold value Y, turn it if relative value B is higher than predetermined threshold Y Under step 750, if relative value B lower than turning following step 744 if predetermined threshold Y；

(750) it is filtered from the signal spectrum power filtered out in optical signal spectrum other than fetus frequency domain optical power frequency spectrum Optical signal spectrum can use frequency domain filter, can also be realized by software mode, then go to the step 730 under it

(730) filtered optical signal frequency spectrum is reverted back time domain from frequency domain and obtains filtered optical signal as the light of weighted superposition letter Number, then go to the step 734 under it；

(744) optical signal spectrum is reverted back time domain from frequency domain, then goes to the step 746 under it；

(746) being multiplied by weighting coefficient M is 0, then goes to the step 734 under it；

(734) filtered optical signal relevant to fetal hemoglobin saturation is weighted with weighting coefficient M, the data F after weighting It makes a gift to someone addition selector 254.

It should be noted that Figure 18 and Figure 19's except that frequency-region signal step 728 determine be more than preset After threshold value Y, Figure 18 directly carries out inverse conversion in step 730 and restores time-domain signal.Figure 19 is then handle and fetus frequency domain optical power frequency It composes after incoherent target signal filter falls, then input step 730 carries out inverse conversion and restores time-domain signal.

Signal can be used quick Fu from the mathematics conversion formula that time domain is converted into frequency domain by step 722 in Figure 18, Figure 19 In leaf conversion formula or transform formula, in addition, Laplace transform can be used for the conversion from time domain to frequency domain, time domain turns The mode for changing frequency domain into belongs to the prior art and is not repeating.

Signal is reversed the mathematics conversion formula for gaining time domain that can correspond to use by step 730 from frequency domain in Figure 18, Figure 19 Inverse Fast Fourier conversion formula and Z anti transform formula or inverse laplace transform, frequency domain reverse the mode for gaining time domain to belong to The prior art is not repeating.

Referring to Figure 16,20-21, signal primary processor 250 further includes for digital signal to be converted to frequency domain from time domain Time-frequency convert device and/or time-frequency inverse converter for digital signal to be reduced to time domain from frequency domain.The signal is primary The signal analyzer 252 of processor 250 based on fetal heart rate signal with digital signal in frequency domain or the correlation of time domain, to each road Digital signal marks weighting coefficient respectively, and the addition selector 254 is overlapped processing according to weighting coefficient, and described adds Method selector 254 can be linear superposition device or optical signal selector.

Figure 20 is a flow instance of addition selector 254 in Figure 16.The signal primary processor 250 includes adding Method selector 254, the addition selector 254 are linear superposition device, it exports optical receiver 204 and process signal point The analysis of parser 252 treated the linear superposition of multi-path digital signal, receives optical signal summation 256 with synthesis.Specifically, every The signal 802,804,806 that one signal analyzer 252 generates imports linear superposition device and carries out linear superposition, generates and receives light letter Number summation 256.Fetus BOLD contrast 1 outside abdomen will be sent by communication link 14 by receiving optical signal summation 256.The signal is primary The input signal of the linear superposition device of processor 250 is the data E generated by time-domain signal analysis device, or by frequency-region signal The data F that analyzer generates.

Figure 21 is another flow instance of addition selector 254 in Figure 16.The signal primary processor 250 includes Addition selector 254, the addition selector 254 are optical signal selector, it will be exporting and pass through from optical receiver 204 It is selected in the analysis of signal analyzer 252 treated multi-path digital signal all the way as reception optical signal summation 256；Or therefrom It selects multi-path digital signal and is superimposed to be formed by them to receive optical signal summation 256.Specifically, each signal analyzer produces Raw signal 802,804,806 imports optical signal selector and is further screened and be superimposed.Optical signal selector 810 is according to institute Comparison, the cognition to the position of each optical receiver 204 in Fig. 6, Fig. 7, Figure 16 for having signal 802,804,806, Yi Jiqi He judges knowledge relevant to fetal hemoglobin saturation, selects one or more signals to generate and receives optical signal summation 256. Fetus BOLD contrast 1 outside abdomen will be sent by communication link 14 by receiving optical signal summation 256.The signal primary processor 250 The input signal of optical signal selector be the data E generated by time-domain signal analysis device, or by frequancy signal anaysis device The data F of generation, the optical signal selector alternative condition of signal primary processor 250 include oxygen saturation signal state and/ Or position signal state.

The utility model both can be used for the undesirable fetus of anoxic heart rate, equally can be used for the fetus of normal cardiac rate, Both it can be detected in hospital, and the long-range perinatal monitor supported with mobile Internet can also be transplanted and expand to, such as by remote Journey is detected in family.The utility model can be with existing electronic fetal monitoring (Electronic Fetal Monitor, EFM) combine, realize the signal processing to more fully novel fetal monitoring equipment.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the protection scope of the utility model.

Claims (9)

1. noninvasive fetal hemoglobin saturation detection device outside a kind of abdomen, including outside abdomen fetus BOLD contrast and with fetus BOLD contrast outside abdomen The signal detection component of connection, the outer fetus BOLD contrast of the abdomen includes signal processing controller, the signal detection component Including illuminating source device, for acquiring the optical receiver apparatus of optical signal relevant to fetal hemoglobin saturation outside pregnant woman's abdomen, And for acquire in fetal heart rate signal, maternal heart rate signal and pregnant woman's detecting sphygmus and blood oxygen saturation optical signal any one or The reference signal detection device of multiple signals, illuminating source device, optical receiver apparatus and reference signal detection device are and signal Processing controller connection, it is characterised in that:

The illuminating source device irradiates the light of two or more different wave lengths into pregnant woman's abdomen；

The optical receiver apparatus includes the multiple optical receivers for being separately positioned on multiple and different positions outside pregnant woman's abdomen, further include with The adder of multiple optical receiver connections, adder are connect with the signal processing controller of the outer fetus BOLD contrast of abdomen, light-receiving dress It sets and acquires multiple light letters relevant to fetal hemoglobin saturation scattering and be reflected back out of pregnant woman abdomen by multiple optical receivers Number, and optical signal summation relevant to fetal hemoglobin saturation is exported to signal processing controller after adder is superimposed.

2. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 1, it is characterised in that: further include difference The multiple amplifiers connecting with multiple optical receivers, multiple amplifiers are connect with adder, adder by digital analog converter with The signal processing controller connection of the outer fetus BOLD contrast of abdomen.

3. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 1, it is characterised in that: further include difference The multiple amplifiers being connect with multiple optical receivers, the multiple digital analog converters being connect respectively with multiple amplifiers, multiple digital-to-analogues Converter is connect with adder, and adder is connect with the signal processing controller of the outer fetus BOLD contrast of abdomen.

4. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 1, it is characterised in that: including being integrated with The fetus blood oxygen light signal acquisition device of illuminating source device and optical receiver apparatus, fetus blood oxygen light signal acquisition device includes light Sensor attachment mechanism, the optical sensor installing mechanism integrated installation have illuminating source device and including multiple optical receivers Optical receiver apparatus.

5. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 4, it is characterised in that: the light connects The illuminating source surrounding that illuminating source device is arranged in multiple optical receivers of receiving apparatus forms a circle.

6. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 4, it is characterised in that: the light connects The surrounding composition one that the illuminating source of illuminating source device is arranged in multiple optical receivers of receiving apparatus is rectangular；Or it is described Multiple optical receivers of optical receiver apparatus constitute the array of 1 i row * j column and the illuminating source of illuminating source device are arranged in Side, i and j are the integer greater than 0；Or multiple optical receivers of the optical receiver apparatus constitute the battle array of 2 i row * j column The two sides of the illuminating source of illuminating source device are arranged and are separately positioned on, i and j are the integer greater than 0.

7. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 1, it is characterised in that: the fetus Blood oxygen light signal acquisition device further includes the conducting switch for the signal control that the pulse sequence emitted by illuminating source device generates, The received optical signal of each optical receiver of optical receiver apparatus switchs after being converted into electric signal by the conducting, so as to shine Shining for light supply apparatus is synchronous with being by the received optical signal of conducting switch, only luminous synchronous with radiant device The analog-digital converter that optical signal in the burst pulse time can just be sent to optical receiver apparatus, which is transformed into digital signal, to carry out in next step Processing.

8. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 4, it is characterised in that: the fetus Blood oxygen light signal acquisition device be capable of fixing installation illuminating source device and optical receiver apparatus including multiple optical receivers and It is capable of fixing the soft component wrapped in her abdominal on her abdominal simultaneously.

9. noninvasive fetal hemoglobin saturation detection device outside abdomen according to claim 1, it is characterised in that: the luminous light Source device includes illuminating source and the light source drive that connect with illuminating source, and the illuminating source includes multiple first shining Unit and multiple second luminescence units, multiple first luminescence units can issue the feux rouges or infrared light of first wave length, multiple Second luminescence unit can issue the feux rouges or infrared light of second wave length, and first wave length is different from second wave length, and first shines The quantity of unit and the second luminescence unit is identical, and multiple first luminescence units and multiple second luminescence units are arranged to ranks light Source battle array, the first luminescence unit and the second luminescence unit are arranged alternately and in each column of ranks light source battle array in every row of ranks light source battle array First luminescence unit and the second luminescence unit are also arranged alternately, and multiple first luminescence units and multiple second luminescence units are in light source Alternating is lighted under the control of driver.