CN205041370U - Sleep monitor appearance of leading more - Google Patents
Sleep monitor appearance of leading more Download PDFInfo
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- CN205041370U CN205041370U CN201520784682.XU CN201520784682U CN205041370U CN 205041370 U CN205041370 U CN 205041370U CN 201520784682 U CN201520784682 U CN 201520784682U CN 205041370 U CN205041370 U CN 205041370U
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Abstract
The utility model discloses a sleep monitor appearance of leading more, a mouthful nose airflow channel has, set up on mouth nose airflow channel being used for the monitoring breathe the air current and or sensor (1), preamplifier (2) of human air flue pressure, and band pass filter (3), wherein, the output of sensor (1) is connected with preamplifier's (2) input to the signal of telecommunication that contains sound of snoring signal to sensor (1) output amplifies the processing, the input and preamplifier's (2) the output of band pass filter (3) are connected, and the filter pass band of band pass filter (3) is unanimous with the frequency range of sound of snoring signal to through the sound of snoring signal of band pass filter (3) output through enlargeing. The utility model discloses sleep monitor appearance of leading more can reduce occuping of hardware resource, and then reduction in production cost.
Description
Technical field
This utility model relates to sound of snoring monitoring technical field, and more specifically, this utility model relates to a kind of Polysomnography.
Background technology
Sleep accounts for 1/3rd of people's life, nowadays sleep disorder has become the health problem that majority pay close attention to, the sleep disorder of medical circle special concern is caused to be with apneic snoring in sleep, i.e. sleep apnea syndrome (sleepapneasyndrome, SAS), due to polysomnogram (Polysomnogram, PSG) be current diagnosis sleep apnea syndrome " goldstandard ", therefore, all diagnosed by the polysomnogram of Polysomnography acquisition patient clinically, and the sound of snoring is as the apneic important physiological parameter of diagnosis patient sleeps, become the requisite auxiliary monitoring project of Polysomnography, therefore, sound of snoring sensor just becomes the standard configuration of Polysomnography.Conventional sound of snoring sensor mainly comprises miaow hair style sound of snoring sensor and throat viberating sound of snoring sensor according to occupation mode classification, impedance type principle of induction and capacitive induction principle is mainly comprised according to principle of induction classification, namely after applying stable voltage source to sound of snoring sensor, the impedance of sound of snoring sensor self or capacitive reactance can change when being subject to the stimulation of external sound vibrations, and then the voltage signal causing sound of snoring sensor to export changes, like this, just by obtaining and identifying that this voltage signal is to monitor sound of snoring event.
Because the mode of this kind of monitoring sound of snoring event needs to arrange separately a sound of snoring sensor at sound of snoring monitoring channel, therefore, it not only can take the hardware resource of Polysomnography, be unfavorable for reducing costs, but also need patient's extra polygamy when carrying out sleep monitor to wear a sound of snoring sensor, reduce property easy to use and the comfortableness of instrument.In addition, the mode of this kind of monitoring sound of snoring event neither be very good in monitoring effect, and this is mainly reflected in: miaow hair style sound of snoring sensor is easy to introduce outside noise signal, can cause the erroneous judgement of sound of snoring event; Although throat viberating sound of snoring sensor effectively can avoid the interference of outside noise signal, this sensor must with the contact skin of patient, easily cause the sense of discomfort of patient, and majority need use medical adhesive tape fix, easily come off cause monitoring invalid.
Utility model content
This utility model solves existing Polysomnography and takies hardware resource because needing to arrange separately a sound of snoring sensor to what monitor that sound of snoring event brings at sound of snoring monitoring channel and be unfavorable for the problem that reduces costs.
According to an aspect of the present utility model, provide a kind of Polysomnography, there is mouth and nose gas channel and be arranged on described mouth and nose gas channel for monitor respiratory air flow and or the sensor of human airway pressure, it also comprises preamplifier and band filter, the outfan of described sensor is connected with the input of described preamplifier, to carry out processing and amplifying by described preamplifier to the signal of telecommunication including sound of snoring signal that described sensor exports; The outfan of described preamplifier is connected with the input of described band filter, and the filter pass band of described band filter is consistent with the frequency range of described sound of snoring signal, to be exported the sound of snoring signal through amplifying by described band filter.
Preferably, described sensor is the differential type sensor exporting the described signal of telecommunication with difference form, described preamplifier comprises differential amplifier circuit, and the positive and negative input of described differential amplifier circuit is as the input of described preamplifier and the positive and negative outfan of described sensor is corresponding connects.
Preferably, described band filter comprises active high-pass filtering circuit and active low-pass filter circuit, and described active high-pass filtering circuit and described active low-pass filter circuit are connected in series between the input of described band filter and the outfan of described band filter.
Preferably, described active high-pass filtering circuit comprises the homophase high pass amplifying circuit realized based on the first operational amplifier.
Preferably, described active high-pass filtering circuit also comprises integrating capacitor and differential capacitance, feedback resistance and the described integrating capacitor of described homophase high pass amplifying circuit are connected in parallel, wherein, described feedback resistance is connected between the inverting input of described first operational amplifier and the outfan of described first operational amplifier; Between the inverting input that the anti-phase input resistance of described homophase high pass amplifying circuit and described differential capacitance are connected in series in described first operational amplifier and the first reference power supply, or be connected in series in described first operational amplifier inverting input and in analog between.
Preferably, described active high-pass filtering circuit also comprises the anti-phase high pass amplifying circuit realized based on the second operational amplifier, described homophase high pass amplifying circuit and described anti-phase high pass amplifying circuit are connected in series between the input of described active high-pass filtering circuit and the outfan of described active high-pass filtering circuit, and the relatively described anti-phase high pass amplifying circuit of described homophase high pass amplifying circuit is preposition.
Preferably, described active high-pass filtering circuit also comprises the first diode and the second diode, feedback resistance and described first Diode series of described anti-phase high pass amplifying circuit are connected between the inverting input of described second operational amplifier and the outfan of described second operational amplifier, and the negative electrode of described first diode is direct or be indirectly connected with the inverting input of described second operational amplifier; The anode of described second diode is connected with the inverting input of described second operational amplifier, and the negative electrode of described second diode is connected with the outfan of described second operational amplifier.
Preferably, the relatively described active low-pass filter circuit of described active high-pass filtering circuit is preposition.
Preferably, the homophase low pass amplifying circuit that described active low-pass filter circuit comprises RC low-pass filter circuit and realizes based on the 3rd operational amplifier, and between the described RC low-pass filter circuit outfan that is connected to described homophase low pass amplifying circuit and the outfan of described active low-pass filter circuit.
Preferably, described sensor is pressure transducer.
A technique effect of the present utility model is, for Polysomnography of the present utility model, because it is the sensor acquisition sound of snoring signal for monitoring respiratory air flow and/or human airway pressure on mouth and nose gas channel utilizing self to configure, therefore, Polysomnography of the present utility model is without the need to putting a sound of snoring sensor for the extra polygamy of monitoring sound of snoring event, this obviously effectively can solve existing Polysomnography and take hardware resource because needing to arrange separately a sound of snoring sensor to what monitor that sound of snoring event brings at sound of snoring monitoring channel and be unfavorable for the problem that reduces costs.And, because this utility model Polysomnography is filtered from the signal of telecommunication that the sensor be arranged on mouth and nose gas channel exports by band filter to obtain sound of snoring signal, therefore, sensor wherein can not introduce external interference signal substantially, also without the need to the direct skin contact with patient, this illustrates that this utility model Polysomnography can also effectively solve and existingly utilizes the problem that the anti-interference existing for sound of snoring Sensor monitoring sound of snoring event is poor, be easy to cause patient's discomfort.
Accompanying drawing explanation
What form a part for description drawings describes embodiment of the present utility model, and together with the description for explaining principle of the present utility model.
Fig. 1 is the frame principle figure that this utility model Polysomnography gathers sound of snoring signal;
Fig. 2 is a kind of frame principle figure implementing structure of band filter in Fig. 1;
A kind of circuit theory diagrams implementing structure that Fig. 3 is preamplifier shown in Fig. 1;
Fig. 4 is a kind of circuit theory diagrams implementing structure of the active high-pass filtering circuit of band filter in Fig. 2;
Fig. 5 is the circuit theory diagrams of the homophase high pass amplifying circuit of active high-pass filtering circuit in Fig. 4;
Fig. 6 is the circuit theory diagrams of the anti-phase high pass amplifying circuit of active high-pass filtering circuit in Fig. 4;
Fig. 7 is a kind of circuit theory diagrams implementing structure of the active low-pass filter circuit of band filter in Fig. 2.
Description of reference numerals:
1: sensor; 2: preamplifier;
U2: operational amplifier; VOUT+: the positive input terminal of differential amplifier circuit;
AVCC: the positive pole of power supply; VOUT-: the negative input end of differential amplifier circuit;
AGND: the negative pole of power supply; REF: reference power supply;
R1, R2, R3, R4: resistance; 3: band filter;
31: active high-pass filtering circuit; 31A: homophase high pass amplifying circuit;
U31A: the first operational amplifier; SIGO: the input of homophase high pass amplifying circuit;
R28: feedback resistance; R32: homophase input resistance;
R26: anti-phase input resistance; C13: differential capacitance;
C14: integrating capacitor; C18: filter capacitor;
31B: anti-phase high pass amplifying circuit; U31B: the second operational amplifier;
R33: homophase input resistance; R29: anti-phase input resistance;
C17: filter capacitor; REF1: the first reference power supply;
R27: feedback resistance; D1: the first diode;
D2: the second diode; 32: active low-pass filter circuit;
32A: homophase low pass amplifying circuit; 32B:RC low-pass filter circuit;
U32: the three operational amplifier; R30: homophase input resistance;
R37: anti-phase input resistance; R35: feedback resistance;
C20: filter capacitor; R31: resistance;
C16, C19: electric capacity; PHAC: the outfan of active low-pass filter circuit;
REF2: the second reference power supply.
Detailed description of the invention
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to this utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for description.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
This utility model takies hardware resource in order to solve existing Polysomnography because needing to arrange separately a sound of snoring sensor to what monitor that sound of snoring event brings at sound of snoring monitoring channel and is unfavorable for the problem that reduces costs, provide a kind of Polysomnography through improving, the sensor acquisition sound of snoring signal that what this Polysomnography utilized self to configure be arranged on mouth and nose gas channel, wherein, this sensor is be set to for gathering mouth and nose airflow signal and/or human airway pressure signal (i.e. cpap pressure signal) originally, therefore, Polysomnography also has in the signal of telecommunication for exporting from sensor and filters the wave filter obtaining mouth and nose airflow signal and/or the wave filter obtaining human airway pressure signal for filtration in the signal of telecommunication that exports from sensor, wherein, the frequency range of mouth and nose airflow signal is generally 0.5Hz ~ 15Hz, the frequency range of human airway pressure signal is usually less than 0.1Hz.Like this, Polysomnography of the present utility model just monitors sound of snoring signal by the pressure transducer of an existing monitoring mouth and nose airflow signal and/or human airway pressure signal simultaneously, this obviously can reduce taking of hardware resource, reduces the cost of Polysomnography.For this reason, as shown in Figure 1, this utility model Polysomnography also comprises preamplifier 2 and band filter 3, this sensor 1 can be the sensor of any type can responding to mouth and nose variations in flow, such as pressure transducer, acceleration transducer, piezoelectric transducer, particularly pressure transducer, this pressure transducer can be gauge sensor, absolute pressure pressure transducer, differential pressure pressure transducer, the outfan of this sensor 1 is connected with the input of preamplifier 2, processing and amplifying is carried out with the signal of telecommunication including sound of snoring signal exported by preamplifier 2 pairs of sensors 1, at this, because sensor 1 is arranged on mouth and nose gas channel, therefore, this signal of telecommunication also comprises respiratory air flow signal and human airway pressure signal usually, the input of this band filter 3 is connected with the outfan of preamplifier 2, and the filter pass band of band filter 3 is consistent with the frequency range of sound of snoring signal, wherein, the frequency range of this sound of snoring signal is generally 10Hz ~ 100Hz, like this, the signal of telecommunication through amplifying exported by preamplifier 2 inputs to band filter 3, just can obtain the sound of snoring signal through amplifying.
In addition, because sensor 1 directly gathers sound of snoring signal on special mouth and nose gas channel, therefore, sensor 1 can not introduce external interference signal substantially on the one hand, and this illustrates that Polysomnography of the present utility model has the stronger advantage of anti-interference; Sensor 1 is without the need to the direct skin contact with patient on the other hand, and this illustrates that Polysomnography of the present utility model has the higher advantage of comfort.
In order to improve the ability of the anti-common mode disturbances of Polysomnography, the sensor 1 preferably adopts the differential type sensor exporting above-said current signal with difference form, namely sensor 1 has positive and negative outfan, and the two exports the two path signal that amplitude is equal, phase place is contrary; For this reason, above-mentioned preamplifier 2 can comprise differential amplifier circuit, the positive and negative outfan of this sensor 1 then should correspondingly with the positive and negative input of differential amplifier circuit connect, and this preamplifier 2 can only comprise this differential amplifier circuit, also other amplifying circuits be connected in series with differential amplifier circuit and/or other treatment circuits also can be comprised.
Fig. 3 shows a kind of alternative differential amplifier circuit, and in the embodiment shown in fig. 3, the positive and negative power input of sensor 1 is corresponding with positive and negative electrode AVCC, AGND of power supply respectively to be connected, and the negative pole AGND of power supply connects in analog.This differential amplifier circuit comprises operational amplifier U2, and this operational amplifier U2 and sensor 1 adopt identical power supply to power, and its positive and negative power input is corresponding with positive and negative electrode AVCC, AGND of power supply respectively to be connected; Inverting input one branch road of operational amplifier U2 is connected with the negative input end VOUT-of differential amplifier circuit through resistance R3, and another branch road is connected with the outfan of operational amplifier U2 through resistance R4; In-phase input end one branch road of operational amplifier U2 is connected with the positive input terminal VOUT+ of differential amplifier circuit through resistance R1, another branch road is connected with reference power supply REF through resistance R2, with when operational amplifier U2 adopt single power supply by reference power supply REF for operational amplifier U2 provides bias voltage, and then ensure that the output of operational amplifier U2 is undistorted, at this, if operational amplifier U2 adopts dual power supply, then another branch road can through resistance R2 directly be connected in analog, and without the need to being connected with reference power supply REF; The outfan of operational amplifier U2 is the outfan of differential amplifier circuit; Wherein, the resistance of resistance R1 and resistance R3 should be equal, and the resistance of resistance R2 and resistance R4 should be equal.
Polysomnography of the present utility model can adopt filter pass band to meet any one band filter of the frequency range of sound of snoring signal, above-mentioned band filter 3 can realize in conjunction with resistance and electric capacity based on an operational amplifier, preferably, as shown in Figure 2, above-mentioned band filter 3 comprises active high-pass filtering circuit 31 and active low-pass filter circuit 32, and active high-pass filtering circuit 31 and active low-pass filter circuit 32 are connected in series between the input of band filter 3 and the outfan of band filter 3, to carry out high-pass filtering and low-pass filtering to the electric signal sequence through amplifying, or order carries out low-pass filtering and high-pass filtering, this kind of structure is conducive to realizing wider filter pass band by the band filter of an operational amplifier realization relatively.In addition, because interfering signal is mostly high-frequency signal, in order to improve the efficiency of band filter 3, as shown in Figure 2, in band filter 3, preferably make active high-pass filtering circuit 31 confronting active low-pass filter circuit 32 preposition, the signal of telecommunication namely inputed in band filter 3 first carries out high-pass filtering process through active high-pass filtering circuit 31, then carries out low-pass filtering treatment through active low-pass filter circuit 32.
In order to realize the further amplification of sound of snoring signal, above-mentioned active high-pass filtering circuit 31 can comprise the homophase high pass amplifying circuit 31A realized based on the first operational amplifier U31A as shown in Figure 4 and Figure 5, Fig. 5 shows a kind of alternative typical homophase high pass amplifying circuit, in this homophase high pass amplifying circuit 31A, first operational amplifier U31A is powered by above-mentioned power supply equally, and its positive and negative power input is corresponding with positive and negative electrode AVCC, AGND of power supply respectively to be connected; In-phase input end one branch road of this first operational amplifier U31A is connected with the input SIGO of homophase high pass amplifying circuit through filter capacitor C18, another branch road is connected with the first reference power supply REF1 through homophase input resistance R32, wherein, this first reference power supply REF1 is taken to the mid point of power supply usually; Inverting input one branch road of the first operational amplifier U31A is connected with the outfan of the first operational amplifier U31A through feedback resistance R28, and another branch road is connected with the first reference power supply REF1 through anti-phase input resistance R26; The outfan of the first operational amplifier U31A is then the outfan of homophase high pass amplifying circuit 31A.In the embodiment that active high-pass filtering circuit 31 confronting active low-pass filter circuit 32 is preposition, the input SIGO of above-mentioned homophase high pass amplifying circuit 31A can directly be connected with the outfan of preamplifier 2 as the input of band filter 3.
In order to improve capacity of resisting disturbance and the filter efficiency of active high-pass filtering circuit 31 on the basis of above-mentioned homophase high pass amplifying circuit 31A, as shown in Figure 4, this active high-pass filtering circuit 31 can also comprise integrating capacitor C14 and differential capacitance C13, wherein, the feedback resistance R28 of the first operational amplifier U31A and this integrating capacitor C14 is connected in parallel; The anti-phase input resistance R26 of the first operational amplifier U31A and this differential capacitance C13 is connected in series between the inverting input of the first operational amplifier U31A and the first reference power supply REF1.
In order to improve the strainability of active high-pass filtering circuit 31, this active high-pass filtering circuit 31 can adopt classification to filter wave structure, therefore, this active high-pass filtering circuit 31 can also comprise the anti-phase high pass amplifying circuit 31B realized based on the second operational amplifier U31B as shown in Figure 4 and Figure 6, be specially that this homophase high pass amplifying circuit 31A and anti-phase high pass amplifying circuit 31B is connected in series in active high-pass filtering circuit 31 between input and the outfan of active high-pass filtering circuit 31, and homophase high pass amplifying circuit 31A relative antiphase high pass amplifying circuit 31B is preposition, namely the signal of telecommunication in active high-pass filtering circuit 31 is inputed to first through homophase high pass amplifying circuit 31A, again through anti-phase high pass amplifying circuit 31B.
Fig. 6 shows a kind of alternative typical case anti-phase high pass amplifying circuit 31B, in this anti-phase high pass amplifying circuit 31B, second operational amplifier U31B is powered by above-mentioned power supply equally, and its positive and negative power input is corresponding with positive and negative electrode AVCC, AGND of power supply respectively to be connected; Inverting input one branch road of the second operational amplifier U31B is connected with the input of anti-phase high pass amplifying circuit 31B with the cascaded structure of filter capacitor C17 through anti-phase input resistance R29, and another branch road is connected with the outfan of the second operational amplifier U31B through feedback resistance R27; The in-phase input end of the second operational amplifier U31B is connected with the first reference power supply REF1 through homophase input resistance R33; The outfan of this second operational amplifier U31B is the outfan of anti-phase high pass amplifying circuit 31B.
With reference to the explanation to reference power supply REF, when the first operational amplifier U31A and the second operational amplifier U31B adopts dual power supply, the potential point be connected with the first reference power supply REF1 of active high-pass filtering circuit 31 all can directly with in analog be connected.
For the ease of subsequent module, further process is done to the sound of snoring signal through amplifying that band filter 3 exports, to realize the object of monitoring sound of snoring event, as shown in Figure 4, this active high-pass filtering circuit 31 can also comprise the first diode D1 and the second diode D2, to carry out Shape correction by the first diode D1 and the second diode D2 to the signal of telecommunication inputed in active high-pass filtering circuit 31, wherein, the feedback resistance R27 of anti-phase high pass amplifying circuit 31B and the first diode D1 is connected in series between the inverting input of the second operational amplifier U31B and the outfan of the second operational amplifier U31B, and the negative electrode of this first diode D1 is directly connected with the inverting input of the second operational amplifier U31B, or be indirectly connected with the inverting input of the second operational amplifier U31B through feedback resistance R27, second diode D2 forward is connected between the inverting input of the second operational amplifier U31B and the outfan of the second operational amplifier U31B, and namely the anode of the second diode D2 is connected with the inverting input of the second operational amplifier U31B.
This active low-pass filter circuit 32 can comprise the homophase low pass amplifying circuit 32A realized based on the 3rd operational amplifier U32, Fig. 7 shows a kind of alternative typical homophase low pass amplifying circuit 32A, in this homophase low pass amplifying circuit 32A, 3rd operational amplifier U32 is powered by above-mentioned power supply equally, it just, negative supply input respectively with power supply just, negative pole AVCC, AGND correspondence connects, in-phase input end one branch road of the 3rd operational amplifier U32 is connected with the input of homophase low pass amplifying circuit 32A through homophase input resistance R30, another branch road is connected with the second reference power supply REF2 through filter capacitor C20, inverting input one branch road of the 3rd operational amplifier U32 is connected with the second reference power supply REF2 through anti-phase input resistance R37, another branch road is connected with the outfan of the 3rd operational amplifier U32 through feedback resistance R35, wherein, second reference power supply REF2 is taken to the mid point of power supply usually, and when the 3rd operational amplifier U32 adopts dual power supply, the potential point be connected with the second reference power supply REF2 of active low-pass filter circuit 32 all can directly with in analog be connected, the outfan of the 3rd operational amplifier U32 is the outfan of homophase low pass amplifying circuit 32A.
In order to improve the strainability of active low-pass filter circuit 32, as shown in Figure 7, this active low-pass filter circuit 32 can also comprise RC low-pass filter circuit 32B, to improve the anti-interference of the outfan of homophase low pass amplifying circuit 32A, and realize the impedance matching with follow-up AD conversion module, be specially, this RC low-pass filter circuit 32B comprises the resistance R31 between outfan and the outfan PHAC of active low-pass filter circuit being connected to homophase low pass amplifying circuit 32A, and be connected to active low-pass filter circuit outfan PHAC and digitally between electric capacity C19.The outfan PHAC of this active low-pass filter circuit can directly as the outfan of band filter 3.
In addition, the various embodiments described above primary focus describes the difference with other embodiments, but it will be clear for those skilled in the art that the various embodiments described above can be used alone as required or be combined with each other.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (10)
1. a Polysomnography, there is mouth and nose gas channel and be arranged on described mouth and nose gas channel for monitor respiratory air flow and or the sensor (1) of human airway pressure, it is characterized in that, also comprise preamplifier (2) and band filter (3), the outfan of described sensor (1) is connected with the input of described preamplifier (2), to carry out processing and amplifying by described preamplifier (2) to the signal of telecommunication including sound of snoring signal that described sensor (1) exports; The outfan of described preamplifier (2) is connected with the input of described band filter (3), and the filter pass band of described band filter (3) is consistent with the frequency range of described sound of snoring signal, to be exported the sound of snoring signal through amplifying by described band filter (3).
2. Polysomnography according to claim 1, it is characterized in that, described sensor (1) is the differential type sensor exporting the described signal of telecommunication with difference form, described preamplifier comprises differential amplifier circuit, and the positive and negative input (VOUT+, VOUT-) of described differential amplifier circuit connects as the input of described preamplifier (2) is corresponding with the positive and negative outfan of described sensor (1) respectively.
3. Polysomnography according to claim 1, it is characterized in that, described band filter (3) comprises active high-pass filtering circuit (31) and active low-pass filter circuit (32), and described active high-pass filtering circuit (31) and described active low-pass filter circuit (32) are connected in series between the input of described band filter (3) and the outfan of described band filter (3).
4. Polysomnography according to claim 3, is characterized in that, described active high-pass filtering circuit (31) comprises the homophase high pass amplifying circuit (31A) realized based on the first operational amplifier (U31A).
5. Polysomnography according to claim 4, it is characterized in that, described active high-pass filtering circuit (31) also comprises integrating capacitor (C14) and differential capacitance (C13), feedback resistance (R28) and the described integrating capacitor (C14) of described homophase high pass amplifying circuit (31A) are connected in parallel, wherein, between described feedback resistance (R28) inverting input that is connected to described first operational amplifier (U31A) and the outfan of described first operational amplifier (U31A); Between the inverting input that the anti-phase input resistance (R26) of described homophase high pass amplifying circuit (31A) and described differential capacitance (C13) are connected in series in described first operational amplifier (U31A) and the first reference power supply (REF1), or be connected in series in described first operational amplifier (U31A) inverting input and in analog between.
6. Polysomnography according to claim 4, it is characterized in that, described active high-pass filtering circuit (31) also comprises the anti-phase high pass amplifying circuit (31B) realized based on the second operational amplifier (U31B), between the input that described homophase high pass amplifying circuit (31A) and described anti-phase high pass amplifying circuit (31B) are connected in series in described active high-pass filtering circuit (31) and the outfan of described active high-pass filtering circuit (31), and the relatively described anti-phase high pass amplifying circuit (31B) of described homophase high pass amplifying circuit (31A) is preposition.
7. Polysomnography according to claim 6, it is characterized in that, described active high-pass filtering circuit (31) also comprises the first diode (D1) and the second diode (D2), between the inverting input that the feedback resistance (R27) of described anti-phase high pass amplifying circuit (31B) and described first diode (D1) are connected in series in described second operational amplifier (U31B) and the outfan of described second operational amplifier (U31B), and the negative electrode of described first diode (D1) is direct or be indirectly connected with the inverting input of described second operational amplifier (U31B), the anode of described second diode (D2) is connected with the inverting input of described second operational amplifier (U31B), and the negative electrode of described second diode (D2) is connected with the outfan of described second operational amplifier (U31B).
8. the Polysomnography according to any one of claim 3 to 7, is characterized in that, the described relatively described active low-pass filter circuit of active high-pass filtering circuit (31) (32) is preposition.
9. Polysomnography according to claim 8, it is characterized in that, the homophase low pass amplifying circuit (32A) that described active low-pass filter circuit (32) comprises RC low-pass filter circuit (32B) and realizes based on the 3rd operational amplifier (U32), and between described RC low-pass filter circuit (32B) outfan that is connected to described homophase low pass amplifying circuit (32A) and the outfan (PHAC) of described active low-pass filter circuit (32).
10. Polysomnography according to any one of claim 1 to 7, is characterized in that, described sensor (1) is pressure transducer.
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|---|---|---|---|
| CN201520784682.XU CN205041370U (en) | 2015-10-10 | 2015-10-10 | Sleep monitor appearance of leading more |
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| CN201520784682.XU CN205041370U (en) | 2015-10-10 | 2015-10-10 | Sleep monitor appearance of leading more |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105769201A (en) * | 2016-05-03 | 2016-07-20 | 郑州雅晨生物科技有限公司 | Oronasal airflow monitoring circuit based on instrument amplifier |
| CN106725339A (en) * | 2017-01-06 | 2017-05-31 | 山东诺安诺泰信息系统有限公司 | Sleep quality monitoring system |
| CN109672423A (en) * | 2018-12-24 | 2019-04-23 | 沈阳工业大学 | Integrated state variable filter |
| CN112332823A (en) * | 2020-10-19 | 2021-02-05 | 北京动力源科技股份有限公司 | Direct current switch |
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2015
- 2015-10-10 CN CN201520784682.XU patent/CN205041370U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769201A (en) * | 2016-05-03 | 2016-07-20 | 郑州雅晨生物科技有限公司 | Oronasal airflow monitoring circuit based on instrument amplifier |
| CN106725339A (en) * | 2017-01-06 | 2017-05-31 | 山东诺安诺泰信息系统有限公司 | Sleep quality monitoring system |
| CN109672423A (en) * | 2018-12-24 | 2019-04-23 | 沈阳工业大学 | Integrated state variable filter |
| CN112332823A (en) * | 2020-10-19 | 2021-02-05 | 北京动力源科技股份有限公司 | Direct current switch |
| CN112332823B (en) * | 2020-10-19 | 2024-01-26 | 北京动力源科技股份有限公司 | DC switch |
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Address after: 100036 No. 110, A block, 115 office building, Fucheng Road, Haidian District, Beijing. Patentee after: Beijing Ka Yip Yee medical Polytron Technologies Inc Address before: 100036 No. 110, A block, 115 office building, Fucheng Road, Haidian District, Beijing. Patentee before: Beijing delightful harmony Jia Ye medical science and technology company limited |