CN107692985A - A kind of unperturbed formula physiology signal gathers band - Google Patents
A kind of unperturbed formula physiology signal gathers band Download PDFInfo
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- CN107692985A CN107692985A CN201710889523.XA CN201710889523A CN107692985A CN 107692985 A CN107692985 A CN 107692985A CN 201710889523 A CN201710889523 A CN 201710889523A CN 107692985 A CN107692985 A CN 107692985A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0816—Measuring devices for examining respiratory frequency
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6892—Mats
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Abstract
The invention provides a kind of unperturbed formula physiology signal to gather band, including：Bottom sheet component, upper piece component and piezoelectric membrane, piezoelectric membrane is clamped between bottom sheet component and upper piece component, signal output seat is provided with one termination of bottom sheet component, signal lead-out wire is provided with one termination of piezoelectric membrane, signal lead-out wire is connected with signal output seat, set at bottom sheet module edge fluted, projection is provided with corresponding upper piece module edge, glue is placed with groove, pass through glue bonding between raised and groove, the teeth of equi-spaced apart distribution side by side are provided with the inner surface that at least one component contacts with piezoelectric membrane among bottom sheet component and upper piece component.This unperturbed formula physiology signal gathers band, connection between signal acquisition band structure is realized using adhesive structure, and physiology signal can be gathered without wearing, and sign is gathered by way of teeth pressure presses conductive film, the degree of accuracy of gathered data can be improved.
Description
Technical field
The present invention relates to technical field of medical instruments, and in particular to a kind of unperturbed formula physiology signal gathers band.
Background technology
The collection of electro-physiological signals is commonly used to animal and the human experimentation of the subjects such as medical science, psychology, is more often available to
Medical multi-parameter monitoring system and substantial amounts of diagnostic equipment (such as heart, electroence phalograph, leading hypnotic instrument more), due to electro-physiological signals
Animal and the various physiology of human body and nervous activity can be reflected, therefore the collection of electro-physiological signals is necessary group of said apparatus
Into part.
At present, the real-time monitoring for various people's vital sign parameter signals under daily life scene need to be set by wearable
Standby (such as electronics bracelet, neck ring, vest) is realized.But it is main to carry out vital sign parameter signals collection using wearable device at present
Following defect be present：1) need by the way that signal electrode and human body skin are in close contact, to gather pressure signal caused by muscle
And be converted to electric signal and handled, obtain the important physiological signal of human body, such as the physiology such as heartbeat, breathing and twitch letter
Number, need to be in close contact with human body skin in the gatherer process for carrying out physiological signal, user will be given in use
Bring inconvenience；2) signal electrode need to be sticked in human skin when gathering, may be due to the human body skin pasted every time
The reasons such as skin position difference form different impedances, so as to cause the intensity (amplitude) of the signal of collection unstable so that may
Required physiological signal can not accurately be collected.
For drawbacks described above, some corresponding researchs, such as Publication No. have also been carried out both at home and abroad：CN102319057A's
Chinese patent application discloses a kind of " waveform physiology signal acquisition device and physiological signal collection mattress ", and the device includes：
Waveform flexible body, stretching force snesor and signal processing unit；The waveform flexible body include flexible body panel and
Convex flexible body, the convex flexible body are arranged on flexible body panel, and the human pressure born is converted into tensile force；The drawing
Stretch sensor is arranged in flexible body panel, and electric signal is produced according to the tensile force；The signal processing unit is to described
Electric signal carries out the physiological signal that processing obtains human body.Human pressure is converted to electric signal by the device by waveform flexible body
And handled, so as to by it is indirect contacted with human body skin in a manner of can obtain the physiology of human body in daily life
Signal, make the acquisition of physiological signal more convenient；The physiological signal of acquisition is transmitted to remote equipment using wireless technology simultaneously,
Signal acquisition is separated with the operation such as further analysis or unified storage, further facilitates the collection of physiological signal.But
The patent is transformed into electric signal due to human pressure is converted into tensile force using the deformation by convex flexible body,
Therefore variation to slight pressure and insensitive, once when breathing, pulse or heartbeat because changing and caused slight pressure
Fluctuation insufficient for convex flexible body produce deformation when, the device just can not the above-mentioned sign of precise acquisition, and stretch letter
Number collection sensitivity be the sensitivity that can not show a candle to press tactile signal acquisition.
And for example：Publication No.：CN104013392A Chinese patent application discloses a kind of " physiology signal collection dress
Put and its system ", the device includes that the shaggy flexible pad of self-locking effect can be produced with rough surface, piezoelectric membrane passes
Sensor, signal acquisition process device and signal output interface；The flexible pad is provided with interlayer, and the piezoelectric film sensor is set
It is placed in interlayer, piezoelectric film sensor connects the signal acquisition process device, signal acquisition process device and the signal output
Interface connects；This sensor is disposed, it is necessary to sensor is placed under sheet or sofa cushion on the bed or sofa of softness, is made
It is shaggy fabric up and down, the downward deformation in use, piezoelectric film sensor is stressed as someone, because self-locking is imitated
Should, pressure spot is produced with other positions and pullled, and so as to produce electric signal, the electric signal is by signal acquisition process device acquisition process
Physiology signal, physiology signal are exported by signal output interface.The device is by rough surface and with dissection soft
Property pad and the piezoelectric film sensor that is arranged in interlayer form a human body physiology signal acquisition device and its system, will be soft
Property pad when being arranged on the soft object such as sofa, mattress, when object compressing is when on flexible pad, the stress point of flexible pad
Tensile deformation can occur, so that the piezoelectric film sensor in interlayer collects tension variations, and the flexibility in the invention
Pad uses coarse surface, and when object is pressed on flexible pad, being pressed on flexible pad can be larger with mattress generation
Frictional force, produce " self-locking " effect so that piezoelectric film sensor can collect the power of repeated stretching by a small margin, so as to
Accurately to collect the change of physiology signal.But in the patent application, the rough surface of flexible pad, but it is flexible
The contact surface of pad and piezoelectric film sensor be it is smooth, its operation principle remain gathered by piezoelectric film sensor it is soft
Property pad the tensile deformation of stress point carry out signal collection, if still existed when breathing, pulse or heartbeat are because change
And caused slight pressure is fluctuated when tensile deformation occurs insufficient for stress point, the device just can not the above-mentioned body of precise acquisition
The problem of reference.
In addition, the fastening that the physiology signal harvester used in the market generally carries out device using screw connects
Connect, although facilitating the dismounting of signal pickup assembly, found by research, because screw is metal device, and human body is given birth to
The collection of reason signal is usually that pressure signal is transformed into micro- electric signal, the collection and transformation that the presence of metal can be to micro- electric signal
Affect, can be to being caused in the accuracy of signal acquisition especially in this precision apparatus of physiological signal collection
Larger harmful effect.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes a kind of unperturbed formula physiology signal collection band, and use is gluing
Structure realizes the connection between signal acquisition band structure, and can gather physiology signal, and this collection band without wearing
Sign is gathered by the way of teeth pressure presses conductive film, the degree of accuracy of gathered data can be improved.
To realize above-mentioned technical proposal, the invention provides a kind of unperturbed formula physiology signal to gather band, including：Bottom sheet
Component, upper piece component and piezoelectric membrane, the piezoelectric membrane are clamped between bottom sheet component and upper piece component, the bottom sheet component
A termination on be provided with signal output seat, be provided with signal lead-out wire on a termination of piezoelectric membrane, the signal draws
Outlet is connected with signal output seat, it is characterised in that：Fluted, corresponding upper piece group is set at the bottom sheet module edge
Part edge, which is provided with projection, or bottom sheet module edge, is provided with projection, is set at corresponding upper piece module edge
It is fluted, it is placed with glue in the groove, by glue bonding between raised and groove, the bottom sheet component and upper piece component
Among the teeth of equi-spaced apart distribution side by side are provided with the inner surface that is contacted with piezoelectric membrane of at least one component.
In the assembling process of reality, piezoelectric membrane need to be only placed between bottom sheet component and upper piece component, then will
Groove at bottom sheet module edge is either raised to be aligned with projection or groove corresponding at upper piece module edge, is passed through
Glue in groove realizes the bonding between bottom sheet component and upper piece component, consequently, it is possible to both realize bottom sheet component and upper piece
Bonding between component, the sealing between bottom sheet component and upper piece component is enhanced again, and avoided using metal, so as to keep away
Harmful effect caused by having exempted from collection and transformation of the presence of metal to micro- electric signal, enhance the accuracy of data acquisition.
During actual use, this signal acquisition band need to be only placed in mattress, pillow or cushion, without straight with human skin
Contact, can be automatically by setting when human pressure changes on the bottom sheet component or upper piece component of signal acquisition band
Teeth contacted with piezoelectric membrane and produce pressure signal, the bottom sheet component of this signal acquisition band and upper piece component are by flexible material
Material is made, and piezoelectric membrane is clamped between bottom sheet component and upper piece component, therefore even if simply breathing, pulse or heartbeat because
Faint vibration signal is produced for variation, can also touch the equidistant side by side of intensive setting on bottom sheet component or upper piece component
The teeth being spaced apart, piezoelectric membrane is pressed by teeth to produce timely pressure signal.In this way, pass through relative to traditional
Produce deformation and collect signal, the present apparatus presses piezoelectric membrane collection signal by teeth can more accurately collect weak vibration
Signal, so as to improve the degree of accuracy of gathered data.
Preferably, the bottom of the groove and male cooperation be reserved with 0.2~0.3cm space be used for accommodate glue, can
Effectively to prevent glue from overflowing, while by glue curing, the sealing between bottom sheet component and upper piece component can be strengthened.
Preferably, the bottom sheet component and upper piece module inner are provided with the teeth of equi-spaced apart distribution side by side, and
The teeth set in bottom sheet module inner are interspersed with the teeth set in upper piece module inner.It is demonstrated experimentally that instantly
Piece component and upper piece module inner are provided with the teeth of equi-spaced apart distribution side by side, and set in bottom sheet module inner
When teeth are interspersed with the teeth set in upper piece module inner, the perception to Vibration Signal in Frequency Domain is the sensitiveest, data
The degree of accuracy highest of collection.
Preferably, the shape of cross section of the teeth is trapezoidal, semicircle, triangle or square.In the inspection of reality
During survey, when the shape of cross section of teeth is designed as trapezoidal, semicircle, triangle or square, data acquisition it is accurate
Property disclosure satisfy that actual use, wherein again so that when the shape of cross section of teeth is designed as isosceles trapezoid, effect is best, when
When the shape of cross section of teeth is designed as isosceles trapezoid, the Vibration Signal in Frequency Domain of human body can be conducted well, and can is preferably
Piezoelectric membrane is protected not damaged because of teeth pressure.
Preferably, the facewidth a of the isosceles trapezoid teeth is 0.4-2mm, and the high h of tooth is 0.5-1mm, between adjacent two teeth
Distance d be 4-8mm.More preferred, the facewidth a of the isosceles trapezoid teeth is 0.8mm, and the high h of tooth is 0.8mm, adjacent two
The distance between teeth d is 6mm.It is demonstrated experimentally that when the shape of teeth is designed as isosceles trapezoid, and the facewidth of isosceles trapezoid teeth
A is 0.8mm, and the high h of tooth is the distance between 0.8mm, adjacent two teeth d when being 6mm, and the data collected are the most accurate, and
Damage to piezoelectric membrane is also smaller.
Preferably, the signal lead-out wire of the piezoelectric membrane uses silica gel line, and silica gel line uses S type cablings, Ci Zhongshe
Meter adds the frictional force between silica gel line and bottom sheet component, can be with auxiliary protection pressure when there is external force to be applied on silica gel line
Conductive film, piezoelectric membrane stress is prevented to be pulled off.
Preferably, locating dowel is provided with described former and later two terminations of bottom sheet module inner, piezoelectric membrane is forward and backward
It is provided with the positioning hole corresponding with locating dowel on two terminations, the positioning hole is the elongated hole that length is 2-4mm, piezoelectric membrane
It is fixed on by the way that cooperation between locating dowel and positioning hole is removable between bottom sheet component and upper piece component.Positioning hole is designed as
Length is 2-4mm elongated hole, it is ensured that while positioning to piezoelectric membrane, can give piezoelectric membrane again in horizontal level 2-4mm
Removable space, so as to avoid producing and tearing because piezoelectric membrane stress tensile elongation changes.
Preferably, bottom sheet component and upper piece component are made of the different silica gel material of soft or hard degree, and bottom sheet component is than upper
Piece component is more soft.Upper piece component hardness is higher to be beneficial to the vibration signal that preferably conduction human body is faint, reduces signal and exists
Loss in upper piece component material, bottom sheet hardness is softer, is beneficial to be conducted through the vibration signal come and preferably presses piezoelectric membrane,
To export high-quality signal (intensity is high, the obvious signal of feature).
The beneficial effect of a kind of unperturbed formula physiology signal collection band provided by the invention and system is：
1) this unperturbed formula physiology signal collection band is by being arranged on groove at bottom sheet component or upper piece module edge
Interior glue realizes the bonding between bottom sheet component and upper piece component, consequently, it is possible to both realize bottom sheet component and upper piece component
Between bonding, the sealing between bottom sheet component and upper piece component is enhanced again, and avoid using metal, so as to avoid
Harmful effect caused by collection and transformation of the presence of metal to micro- electric signal, enhance the accuracy of data acquisition；
2) pressure oscillation of this unperturbed formula physiology signal collection band by gathering human body is realized to physiology signal
Collection, can gather physiology signal without wearing, and the tooth by being arranged on bottom sheet component or upper piece component
Tooth contacts with piezoelectric membrane and produces pressure signal, even if simply breathing, pulse or heartbeat produce faint because of changing
Vibration signal, the teeth of the distribution of equi-spaced apart side by side of intensive setting on bottom sheet component or upper piece component can be also touched, are led to
Teeth are crossed to press piezoelectric membrane and produce timely pressure signal, relative in traditional physiology signal acquisition device by producing shape
Becoming and collect signal, the present apparatus presses piezoelectric membrane collection signal by teeth can more accurately collect Vibration Signal in Frequency Domain,
So as to improve the degree of accuracy of gathered data.Simultaneously by the design to teeth shape and size, data acquisition standard can improved
While exactness, the damage to piezoelectric membrane is avoided, improves the service life of equipment.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram that unperturbed formula physiology signal gathers band in invention.
Fig. 2 is the Structure explosion diagram that unperturbed formula physiology signal gathers band in invention.
Fig. 3 is the partial schematic diagram of bottom sheet component in the embodiment of the present invention 1.
Fig. 4 is the partial schematic diagram of upper piece component in the embodiment of the present invention 1.
Fig. 5 is cross-sectional view when teeth are trapezoidal in invention.
Fig. 6 is cross-sectional view when teeth are hemispherical in invention.
Fig. 7 is cross-sectional view when teeth are triangle in invention.
Fig. 8 is cross-sectional view when teeth are square in invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Ability
The every other embodiment that domain ordinary person is obtained under the premise of creative work is not made, belong to the protection of the present invention
Scope.
Embodiment 1：A kind of unperturbed formula physiology signal gathers band.
Referring to figs. 1 to shown in Fig. 5, a kind of unperturbed formula physiology signal gathers band, including：Bottom sheet component 1, upper piece component
2 and piezoelectric membrane 3, the piezoelectric membrane 3 is clamped between bottom sheet component 1 and upper piece component 2, bottom sheet component 1 and upper piece component 2
It is made of the different silica gel material of soft or hard degree, and bottom sheet component 1 is more soft than upper piece component 2, the side of bottom sheet component 1
Fluted 13 are set at edge, the corresponding upper piece edge of component 2 is provided with projection 21, and glue is placed with the groove 13
Water, by glue bonding between projection 21 and groove 13, and the bottom of groove 13 and the cooperation of projection 21 is reserved with 0.2cm sky
Gap is used to accommodate glue, and signal output seat 4, a termination of piezoelectric membrane 3 are provided with a termination of the bottom sheet component 1
On be provided with signal lead-out wire 31, the signal lead-out wire 31 is connected with signal output seat 4, the signal lead-out wire of piezoelectric membrane 3
31 use silica gel lines, and silica gel line use S type cablings, bottom sheet component 1 and the upper piece inner surface of component 2 be provided with side by side equidistantly between
Every the teeth 11 of distribution, and the teeth 11 set on the inner surface of bottom sheet component 1 and the teeth 11 that are set on upper piece inner surface of component 2
It is interspersed, locating dowel 12, former and later two ends of piezoelectric membrane 3 is provided with former and later two terminations of the inner surface of bottom sheet component 1
It is provided with the positioning hole 32 corresponding with locating dowel 12 on head, the positioning hole 32 is the elongated hole that length is 3mm, piezoelectric membrane 3
It is fixed on by the way that cooperation between locating dowel 12 and positioning hole 32 is removable between bottom sheet component 1 and upper piece component 2, teeth 11
Shape of cross section is designed to isosceles trapezoid, and the facewidth a of isosceles trapezoid teeth is 0.8mm, and the high h of tooth is 0.8mm, adjacent two teeth
The distance between d be 6mm.
Embodiment 2：A kind of unperturbed formula physiology signal gathers band.
It is shown referring to Figures 1 and 2, teeth 11 are set on the inner surface of bottom sheet component 1, upper piece inner surface Smooth of component 2, its
Remaining feature is same as Example 1.
Embodiment 3：A kind of unperturbed formula physiology signal gathers band.
Shown referring to Figures 1 and 2, the inner surface of bottom sheet component 1 is smooth, and teeth 11 are set on upper piece inner surface of component 2, remaining
Feature is same as Example 1.
Embodiment 4：A kind of unperturbed formula physiology signal gathers band.
Shown in reference picture 1 and Fig. 6, the shape of cross section of teeth 11 is designed as semicircle, as shown in fig. 6, and semicircle half
Footpath is 0.8mm, and remaining feature is same as Example 1.
Embodiment 5：A kind of unperturbed formula physiology signal gathers band.
Shown in reference picture 1 and Fig. 7, the shape of cross section of teeth 11 is designed as triangle, as shown in fig. 7, and triangle
A height of 0.8mm, remaining feature are same as Example 1.
Embodiment 6：A kind of unperturbed formula physiology signal gathers band.
Shown in reference picture 1 and Fig. 8, the shape of cross section of teeth 11 is designed as square, as shown in figure 8, and square
The length of side is 0.8mm, and remaining feature is same as Example 1.
Comparative example 1：Using commercially available waveform physiology signal acquisition device.
Comparative example 2：Bottom sheet component 1 and the upper piece inner surface of component 2 are all provided with being set to smooth (being not provided with teeth), remaining feature with
Embodiment 1 is identical.
Comparative example 3：It is same as Example 1 by screw connection, remaining feature between bottom sheet component 1 and upper piece component 2.
Test example one, teeth and fixed form experiment
In order to verify connected mode between bottom sheet component and upper piece component and teeth installation site in information gathering it is right
The influence of small-signal sensitivity, spy under the same conditions, use comparative example 1, comparative example 2, comparative example 3, experimental example 1, experiment
Signal pickup assembly in example 2 and experimental example 3, is individually positioned in mattress, and tester lies low on mattress, then using specialty
Contact tester measurement tester beat pulse frequency (beat pulse number per minute) and respiratory rate it is (per minute to exhale
The number of suction), and using the beat pulse frequency and respiratory rate of tester measurement as standard control value, detect teeth and teeth
Influence of the installation site in information gathering to data collection accuracy, the concrete outcome of experiment are as follows：
Table 1
In experiment, using the accuracy of variance evaluating data collection, the stability of the bigger expression data acquisition of variance is poorer,
Specifically variance calculation formula is：
σ2=[(x1-m)2+(x2-m)2+ ﹒ ﹒ ﹒+(xn-m)2]/n,
Wherein σ2Variance yields is represented, m represents x1, x2﹒ ﹒ ﹒ xnAverage value, x1, x2﹒ ﹒ ﹒ xnRepresent pulse frequency difference or breathing
Rate difference number, n represent the group number of numerical value.
It can be calculated from table 1 when being tested using comparative example 1, average value the m=(- 4+2-1-4+3+ of pulse frequency difference
4-5-7)/8=-1.5, then substitute into variance calculation formula：
σ2=[(- 4+1.5)2+(2+1.5)2+ ﹒ ﹒ ﹒+(- 7+1.5)2]/8=14.75
Using the variance yields of the signal pickup assembly collection pulse frequency in comparative example 1, can similarly calculate to use for 14.75
The variance yields of signal pickup assembly collection respiratory rate in comparative example 1 is 2.69.
Table 2
It is calculated again by variance calculation formula：Using the side of the signal pickup assembly collection pulse frequency in comparative example 2
Difference is 36.11, and the variance yields that respiratory rate is gathered using the signal pickup assembly in comparative example 2 is 7.11.
Table 3
It is calculated again by variance calculation formula：Using the side of the signal pickup assembly collection pulse frequency in comparative example 3
Difference is 3.61, and the variance yields that respiratory rate is gathered using the signal pickup assembly in comparative example 3 is 1.11.
Table 4
It is calculated again by variance calculation formula：Using the side of the signal pickup assembly collection pulse frequency in experimental example 1
Difference is 0.5, and the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 1 is 0.36.
Table 5
It is calculated again by variance calculation formula：Using the side of the signal pickup assembly collection pulse frequency in experimental example 2
Difference is 1.5, and the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 2 is 1.
Table 6
It is calculated again by variance calculation formula：Using the side of the signal pickup assembly collection pulse frequency in experimental example 3
Difference is 0.86, and the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 3 is 0.61.
By contrasting the data in Tables 1 and 2 it can be found that the variance yields of pulse frequency and the variance yields of respiratory rate are equal in table 1
It is smaller than table 2, i.e., if bottom sheet component and upper piece module inner in signal acquisition band are all provided with being set to smooth (being not provided with teeth),
It is so either all poorer than commercially available waveform physiology signal acquisition device to pulse frequency or the data acquisition accuracy of respiratory rate,
This has also reacted teeth to the accurate importance of data acquisition from side.
By the data in contrast table 3 and table 4 it can be found that either to pulse frequency or respiratory rate data acquisition, implement
Data stability in example 1 is higher than comparative example 3, i.e., using the stability of data acquisition in the embodiment 1 of glue bonding
It is to be higher than to carry out the comparative example 3 that bottom sheet component and upper piece component are fixed using screw, this is also demonstrated from side, metal
Presence can be to micro- electric signal collection and transformation have undesirable effect, the accuracy of data acquisition can be influenceed.
Then contrast table 1 and table 4 can be found again, the pulse frequency collected using the signal acquisition band in experimental example 1 and breathing
The accuracy of rate is significantly larger than commercially available waveform physiology signal acquisition device, and compared with standard value, maximum difference
Also it is 1, more has and repeatedly realize 0 error occur, and the difference of commercially available waveform physiology signal acquisition device maximum reaches
- 7.The last data contrasted again in a table 1 below, table 2, table 4, table 5 and table 6 are it can be found that the bottom sheet component of signal acquisition band
With teeth are set on the inner surface that at least needs to contact with piezoelectric membrane in a component among upper piece component, otherwise data acquisition
Effect can be very poor, the reason for its is possible is, if by the smooth setting of inner surface, upper piece component of signal acquisition band or under
Piece component needs larger deformation occurs just to contact with piezoelectric membrane, thus cause to sense microvibration it is insensitive,
And after teeth are set, upper piece component or bottom sheet component only need that small fluctuation occurs, and will result in the tooth of relevant position
Tooth contacts with piezoelectric membrane, so as to improve the sensitivity to microvibration.Data in other comparison sheet 1, table 4, table 5 and table 6
It can be found that the installation site of teeth has certain influence to the accuracy of data acquisition, teeth are provided separately within bottom sheet component
When data acquisition accuracy it is worst, the accuracy of data acquisition is better than teeth list when teeth are provided separately within into upper piece component
Bottom sheet component solely is arranged on, optimal situation is：Bottom sheet component and upper piece module inner are provided with equi-spaced apart point side by side
The teeth of cloth, and the teeth set in bottom sheet module inner are interspersed with the teeth set in upper piece module inner, this
When data acquisition accuracy rate highest (variance minimum) now.
Test example two, the experiment of teeth shape
In order to verify influence of the teeth shape to small-signal sensitivity in information gathering, spy under the same conditions, makes
With the signal pickup assembly in experimental example 1, experimental example 4, experimental example 5 and experimental example 6, it is individually positioned in mattress, tester puts down
Lie on mattress, beat pulse frequency (the pulse jump per minute of tester is then measured using the contact tester of specialty
Dynamic number) and respiratory rate (number of breathing per minute), and using the beat pulse frequency of tester measurement and respiratory rate as
Standard control value, influence of the detection teeth shape in information gathering to data collection accuracy, the concrete outcome of experiment are as follows：
Table 7
It is calculated by variance calculation formula：Using the variance yields of the signal pickup assembly collection pulse frequency in experimental example 4
For 1.43, the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 4 is 1.23.
Table 8
It is calculated by variance calculation formula：Using the variance yields of the signal pickup assembly collection pulse frequency in experimental example 5
For 0.36, the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 5 is 0.36.
Table 9
It is calculated by variance calculation formula：Using the variance yields of the signal pickup assembly collection pulse frequency in experimental example 6
For 0.86, the variance yields that respiratory rate is gathered using the signal pickup assembly in experimental example 6 is 0.86.
It is can be seen that by the data in comparison sheet 4, table 7, table 8 and table 9 when teeth are designed to triangle, data are adopted
The accuracy highest of collection, design in echelon when take second place, when being designed to square third, and be designed to data acquisition during semicircle
Accuracy it is worst.The reason for its is possible is, when the area that teeth contact with piezoelectric membrane is smaller, the sensitivity of fluctuation to be got over
Height, when the cross section of teeth is designed to triangle, teeth contact actually straight line with piezoelectric membrane during pressure oscillation；
And the cross section design of teeth in echelon when, it is actually the less square of an area that teeth contact with piezoelectric membrane during pressure oscillation
Shape；And the cross section of teeth is when being designed to square, during pressure oscillation teeth contacted with piezoelectric membrane an actually area compared with
Big rectangle；When the cross section of teeth is designed to hemispherical, it is necessary to which bigger contact area could make it that teeth are thin with piezoelectricity
Film is contacted, and signal is touched so as to produce pressure.But found in the experimentation of reality, if the cross section of teeth be designed to
Triangle, the number contacted with teeth with piezoelectric membrane increase, it is easy to are damaged piezoelectric membrane that (contact force is excessively
Concentrate), cause the piezoelectric membrane in later stage insensitive to pressure signal, the service life of signal pickup assembly can be influenceed.Therefore, will
Teeth design in echelon, you can ensure the accuracy of signal acquisition, ensure that the service life of harvester.
Test example three, trapezoidal teeth dimension test
In order to verify influence of the isosceles trapezoid teeth size in information gathering to small-signal sensitivity, spy is in identical bar
Under part, facewidth a, the tooth high b and space width d that change teeth carry out data acquisition, test facewidth a, the high b of tooth and space width d logarithms
According to the influence of collection accuracy.
Experiment one, facewidth a are to the influence in information gathering to small-signal sensitivity
Experimental method, using the signal pickup assembly in embodiment 1, further feature is constant, changes facewidth a, facewidth a difference
0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm are arranged to, by using different facewidth a's
Signal pickup assembly is positioned over below micro- vibrating device that a fixed frequency is 70 beats/min, with one minute for a cycle, often
The different facewidth a signal pickup assemblies of group gather 100 groups of data (i.e. 100 minutes), compare different facewidth a signal pickup assemblies collections
The accuracy rate of data, such as：During facewidth a=0.2mm, it is 70 beats/min micro- that signal pickup assembly is positioned over into fixed frequency
Below vibrating device, with one minute for a cycle, if in the 100 groups of data now gathered, there are 96 groups to be shown as 70 beats/min
Clock, then during facewidth a=0.2mm, the accuracy of data acquisition is 96%, as long as the data that signal pickup assembly is shown are not 70
Beat/min, then judgement data acquisition mistake, experimental result are as shown in table 10：
Table 10
As can be seen from Table 10, as facewidth a increase, the accuracy of data acquisition are deteriorated, found out from above-mentioned data, tooth
Wide a is not preferably greater than 2mm, and otherwise the accuracy rate of data acquisition can be smaller in view of facewidth a in addition less than 90%, easier to pressure
Conductive film is damaged (contact force is excessively concentrated), can be influenceed the service life of piezoelectric membrane, be considered, as facewidth a=
It during 0.8mm, can both ensure the accuracy of signal acquisition, ensure that piezoelectric membrane has longer service life.
Experiment two, the high h of tooth are to the influence in information gathering to small-signal sensitivity
Experimental method, using the signal pickup assembly in embodiment 1, further feature is constant, changes the high h of tooth, the high h difference of tooth
0.1mm, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm are arranged to, by using the high h's of different teeth
Signal pickup assembly is positioned over below micro- vibrating device that a fixed frequency is 70 beats/min, with one minute for a cycle, often
The high h signal pickup assemblies of the different teeth of group gather 100 groups of data (i.e. 100 minutes), compare the different high h signal pickup assemblies collections of tooth
The accuracy rate of data, such as：During the high h=0.8mm of tooth, it is 70 beats/min micro- that signal pickup assembly is positioned over into fixed frequency
Below vibrating device, with one minute for a cycle, if in the 100 groups of data now gathered, there are 99 groups to be shown as 70 beats/min
Clock, then during the high h=0.8mm of tooth, the accuracy of data acquisition is 99%, as long as the data that signal pickup assembly show are not 70
Beat/min, then judgement data acquisition mistake, experimental result are as shown in table 11：
Table 11
| The high h/mm of tooth | Accuracy/% |
| 0.1 | 81 |
| 0.2 | 85 |
| 0.4 | 90 |
| 0.6 | 94 |
| 0.8 | 99 |
| 1 | 99 |
| 1.5 | 99 |
| 2 | 97 |
| 2.5 | 97 |
| 3 | 95 |
As can be seen from Table 11, with the high h of tooth increase, the accuracy of data acquisition first improves to be deteriorated afterwards, when the high h of tooth is
The accuracy of data acquisition is higher between 0.6-2mm, and the high h of tooth especially cannot be below 0.4mm, otherwise the accuracy meeting of data acquisition
Drastically declining, found in addition in the assembling process of reality, the high h of tooth is unsuitable too high, inconvenient when otherwise piezoelectric membrane is installed, and
Easily slide, when considering the selection high h=0.8mm of tooth, effect is best.
Experiment three, space width d are to the influence in information gathering to small-signal sensitivity
Experimental method, using the signal pickup assembly in embodiment 1, further feature is constant, changes space width d, space width d
1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 15mm are respectively set to by using the high h's of different teeth
Signal pickup assembly is positioned over below micro- vibrating device that a fixed frequency is 70 beats/min, with one minute for a cycle, often
The different space width d signal pickup assemblies of group gather 100 groups of data (i.e. 100 minutes), compare different space width d signal pickup assemblies
The accuracy rate of gathered data, such as：During space width d=4mm, signal pickup assembly is positioned over fixed frequency as 70 beats/min
Micro- vibrating device below, with one minute for a cycle, if in the 100 groups of data now gathered, have 94 groups be shown as 70 times/
Minute, then during space width d=4mm, the accuracy of data acquisition is 94%, as long as the data that signal pickup assembly is shown are not 70
Beat/min, then judgement data acquisition mistake, experimental result are as shown in table 12：
Table 12
| Space width d/mm | Accuracy/% |
| 1 | 90 |
| 2 | 90 |
| 3 | 91 |
| 4 | 94 |
| 5 | 97 |
| 6 | 99 |
| 7 | 98 |
| 8 | 97 |
| 9 | 95 |
| 10 | 92 |
| 12 | 88 |
| 15 | 79 |
As can be seen from Table 12, with space width d increase, the accuracy of data acquisition first improves to be deteriorated afterwards, works as between cog
Away from d, the accuracy of data acquisition is higher between 4-10mm, and space width d can not especially be more than 12mm, otherwise data acquisition standard
True property can drastically decline, and space width is bigger, and expression upper piece component and bottom sheet module inner are more smooth, single when pressure oscillation
Teeth and the chance that piezoelectric membrane presses are smaller in plane product, insensitive to the faint pressure oscillation in part so as to cause, but such as
Fruit space width is too small, presses tactile signal excessively intensive, may cause piezoelectric membrane signal misjudgment, again result in signal acquisition not
Correctly.In summary, space width d is unsuitable excessive also unsuitable too small, and experiment proves that effect is best as space width d=6mm.And
When：The high h=0.8mm of facewidth a=0.8mm, tooth and during space width d=6mm, the collection accuracy highest of signal, accuracy is up to
99%.
Described above is presently preferred embodiments of the present invention, but the present invention should not be limited to the embodiment and accompanying drawing institute is public
The content opened, so every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, both fall within protection of the present invention
Scope.
Claims (10)
1. a kind of unperturbed formula physiology signal gathers band, including：Bottom sheet component, upper piece component and piezoelectric membrane, the piezoelectricity
Film clamp is provided with signal output seat between bottom sheet component and upper piece component on a termination of the bottom sheet component, presses
Signal lead-out wire is provided with one termination of conductive film, the signal lead-out wire is connected with signal output seat, it is characterised in that：
Set fluted at the bottom sheet module edge, projection, or bottom sheet component are provided with corresponding upper piece module edge
Edge is provided with projection, sets fluted at corresponding upper piece module edge, and glue is placed with the groove, raised
By glue bonding between groove, at least one component contacts with piezoelectric membrane among the bottom sheet component and upper piece component
Inner surface on be provided with the teeth of the distribution of equi-spaced apart side by side.
2. unperturbed formula physiology signal collection band according to claim 1, it is characterised in that：The groove and male cooperation
Bottom be reserved with 0.2~0.3cm space be used for accommodate glue.
3. unperturbed formula physiology signal collection band according to claim 1, it is characterised in that：The bottom sheet component and upper piece
Module inner is provided with the teeth of the distribution of equi-spaced apart side by side, and the teeth set in bottom sheet module inner and upper piece group
The teeth set on part inner surface are interspersed.
4. band is gathered according to the unperturbed formula physiology signal of claim 1 or 3, it is characterised in that：The teeth it is transversal
Face is shaped as trapezoidal, semicircle, triangle or square.
5. unperturbed formula physiology signal collection band according to claim 4, it is characterised in that：The cross section shape of the teeth
Shape is isosceles trapezoid.
6. unperturbed formula physiology signal collection band according to claim 5, it is characterised in that：The isosceles trapezoid teeth
Facewidth a is 0.4-2mm, and the high h of tooth is that the distance between 0.5-1mm, adjacent two teeth d are 4-8mm.
7. unperturbed formula physiology signal collection band according to claim 6, it is characterised in that：The isosceles trapezoid teeth
Facewidth a is 0.8mm, and the high h of tooth is that the distance between 0.8mm, adjacent two teeth d are 6mm.
8. band is gathered according to the unperturbed formula physiology signal of claim 1 or 3, it is characterised in that：The piezoelectric membrane
Signal lead-out wire uses silica gel line, and silica gel line uses S type cablings.
9. band is gathered according to the unperturbed formula physiology signal of claim 1 or 3, it is characterised in that：In the bottom sheet component
Locating dowel is provided with former and later two terminations of surface, is provided with former and later two terminations of piezoelectric membrane corresponding with locating dowel
Positioning hole, the positioning hole is the elongated hole that length is 2-4mm, and piezoelectric membrane can by the cooperation between locating dowel and positioning hole
It is mobile to be fixed between bottom sheet component and upper piece component.
10. band is gathered according to the unperturbed formula physiology signal of claim 1 or 3, it is characterised in that：Bottom sheet component and upper piece
Component is made of the different silica gel material of soft or hard degree, and bottom sheet component is more soft than upper piece component.
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|---|---|---|---|---|
| CN104013392A (en) * | 2014-05-09 | 2014-09-03 | 杨松 | Human body physiological signal collecting device and system |
| CN106073705A (en) * | 2016-06-01 | 2016-11-09 | 深圳市格兰莫尔寝室用品有限公司 | Piezo-electric device and sleep monitoring device |
| CN205913328U (en) * | 2016-05-23 | 2017-02-01 | 深圳眠虫科技有限公司 | Sleep monitor and physiological parameter monitor pillow |
| CN106943129A (en) * | 2017-03-10 | 2017-07-14 | 深圳市赛亿科技开发有限公司 | Wearable heart rate and respiration monitoring device, method and its intelligent jacket |
| CN208492076U (en) * | 2017-09-27 | 2019-02-15 | 广州中科新知科技有限公司 | A kind of unperturbed formula physiology signal acquisition band |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104013392A (en) * | 2014-05-09 | 2014-09-03 | 杨松 | Human body physiological signal collecting device and system |
| CN205913328U (en) * | 2016-05-23 | 2017-02-01 | 深圳眠虫科技有限公司 | Sleep monitor and physiological parameter monitor pillow |
| CN106073705A (en) * | 2016-06-01 | 2016-11-09 | 深圳市格兰莫尔寝室用品有限公司 | Piezo-electric device and sleep monitoring device |
| CN106943129A (en) * | 2017-03-10 | 2017-07-14 | 深圳市赛亿科技开发有限公司 | Wearable heart rate and respiration monitoring device, method and its intelligent jacket |
| CN208492076U (en) * | 2017-09-27 | 2019-02-15 | 广州中科新知科技有限公司 | A kind of unperturbed formula physiology signal acquisition band |
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