CN108601544A - For the electrometric device and method of the heart - Google Patents
For the electrometric device and method of the heart Download PDFInfo
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- CN108601544A CN108601544A CN201680080697.5A CN201680080697A CN108601544A CN 108601544 A CN108601544 A CN 108601544A CN 201680080697 A CN201680080697 A CN 201680080697A CN 108601544 A CN108601544 A CN 108601544A
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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
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
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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
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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Abstract
One kind being used for the electrometric device of the heart (10) and method.The device (10) includes：Signal picker (11), analog-digital converter (12) and filter (13).Signal picker (11) is electrically connected with analog-digital converter (12), and analog-digital converter (12) is electrically connected with filter (13).The signal picker (11), for obtaining analog electrocardiogram signal；The analog-digital converter (12), for the analog electrocardiogram signal to be converted to the first digital electrocardiosignal；The filter (13), for filtering out the interference signal brought by link present in the first digital electrocardiosignal, obtain the second digital electrocardiosignal, link of the link between signal picker (11) and filter (13).The interference that the device (10) brings electrocardiosignal by filtering out hardware link, improves the accuracy of electrocardiosignal so that also can successfully realize that electrocardio is measured in the case where leading number is less.Meanwhile the device (10) has smaller volume, so that electrocardio is measured and enters family, realizes everyday home health care.
Description
The present embodiments relate to the field of medical instrument technology, and more particularly, to for the electrometric device and method of the heart.
Electrocardiogram (Electrocardiogram, referred to as " ECG ") is the objective indicator of the generation of cardiac excitation, propagation and recovery process.Heart is in succession excited by pacemaker, atrium, ventricle in each cardiac cycle, along with bioelectric variation, draws the figure of the potential change of diversified forms from body surface by electrocardiograph, these figures are ECG.
Tissue and body fluid around heart can be conductive, therefore human body can be regarded as to the volume conductor for one with length and width, thick three-dimensional space.Heart cans be compared to power supply, and the summation of countless Single Cardiac Cell variations can conduct and reflect body surface.There is potential differences between body surface is much put, and also having many points each other is to wait electricity.
The measurement of ECG is to obtain the waveform of electrocardiogram by the voltage difference of different parts in human body surface by sensor.In the measurement of existing ECG, electrode, that is, electric potential sensor is placed on chest and/or each position of four limbs, various number combinations of the lead from ECG electrode.In clinical setting, 12 lead ECG are the most common settings, and 12 lead ECG include that three standard limb leads and 6 precordial leads are often made of right arm, left arm and left leg lead in Hospital Physical Examination, carry out three frequency division.
In the measurement of existing ECG, there are many lead for detecting ECG, cause detection device volume big, and power consumption is high, substantially belong to hospital's special equipment, and user must arrive the hospital with above equipment and carry out Electrocardiography, make troubles to user.
Summary of the invention
The application provides a kind of for the electrometric device and method of the heart, the digital electrocardiosignal being converted into collected analog electrocardiogram signal is filtered, filter out hardware link bring interference signal, improve the accuracy of signal, so that also can successfully realize that electrocardio is measured in the case where leading number is less, it is possible thereby to make device that there is lesser volume, electrocardio measurement is made to enter average family, brings everyday home health care for domestic consumer.
In a first aspect, providing one kind for the electrometric device of the heart, which includes: signal picker, analog-digital converter and filter, and the signal picker and the analog-digital converter are electrically connected, the analog-to-digital conversion
Device and the filter are electrically connected；Wherein, signal picker, for obtaining analog electrocardiogram signal；The analog-digital converter, for the analog electrocardiogram signal to be converted to the first digital electrocardiosignal；The filter obtains the second digital electrocardiosignal, link of the link between the signal picker and the filter for filtering out present in the first digital electrocardiosignal by link bring interference signal.
Therefore, it is according to an embodiment of the present invention to be used for the electrometric device of the heart, the digital electrocardiosignal being converted into collected analog electrocardiogram signal is filtered, filter out hardware link bring interference signal, the accuracy of signal is improved, so that also can successfully realize that electrocardio is measured in the case where leading number is less, it is possible thereby to make device that there is lesser volume, so that electrocardio measurement is entered average family, brings everyday home health care for domestic consumer.
With reference to first aspect, in the first possible implementation of the first aspect, the filter is matched filter, and the filter factor of the filter is that functional relation and least square method of the basis at the position of the signal picker between the first reference signal of transmitting, the second reference signal generated by first signal received at the position of the filter determine.
That is, when designing filter, a reference signal can be emitted at the position of signal picker, reference signal passes through signal picker, during analog-digital converter reaches the position of filter, it will receive the interference of the link between signal picker and filter, this reference signal is received in the starting position of the circuit of filter, relationship between the reference signal of the reference signal and transmitting that receive can be described by functional relation, it can be obtained by according to this functional relation and least square method when being filtered to reference signal, so that the maximum filter factor of the signal-to-noise ratio of reference signal.
Optionally, the second digital electrocardiosignal is passed through into low-pass filter, filters out the interference signals such as electromyography signal, the breath signal in the second digital electrocardiosignal.
Or, the first digital electrocardiosignal first can be passed through into low-pass filter, filter out the interference signals such as electromyography signal, the breath signal in the first digital electrocardiosignal, the digital electrocardiosignal obtained after low-pass filter is further filtered later, filters out hardware link bring interference signal.
The possible implementation of with reference to first aspect the first, in the second possible implementation of the first aspect, the matched filter include N-1 delay time register, N number of multiplier and N number of adder；Wherein, the N-1 delay time register is sequentially connected in series, the input terminal of the matched filter is coupled with the input terminal respectively with the input terminal of the 1st delay time register and the 1st multiplier, the output end of i-th of delay time register is coupled to the input terminal of i+1 multiplier, the output end of i-th of multiplier is coupled to the input terminal of i-th of adder, N number of adder is sequentially connected in series, and the output end of n-th adder is coupled with the output end of the matched filter；Wherein, the first digital electrocardiosignal is from the matched filter
Input terminal input, the signal of matched filter output are the second digital electrocardiosignal；I is 1,2 ..., and N-1, N are the positive integer greater than 1.
With reference to first aspect, or the first possible implementation or second of possible implementation of first aspect, in a third possible implementation of the first aspect, the signal picker includes the first electric potential sensor and the second electric potential sensor, which is specifically used for: sensing the potential difference variation between first position and the second position by first electric potential sensor and second electric potential sensor and obtains the analog electrocardiogram signal.
That is, the embodiment of the present invention only needs two electric potential sensors to obtain electrocardiosignals for the electrometric device of the heart, compared with the prior art in the electrometric device of the heart, using less electric potential sensor, allow device volume smaller, is easy to use and carries.
With reference to first aspect, the first of first aspect any possible implementation into the third possible implementation, in a fourth possible implementation of the first aspect, which further includes signal amplifier, and the signal amplifier and the signal picker and the analog-digital converter are electrically connected；The signal amplifier, for the analog electrocardiogram signal to be amplified processing, the analog electrocardiogram signal after obtaining enhanced processing；Wherein, which is specifically used for: the analog electrocardiogram signal after the enhanced processing is converted to the first digital electrocardiosignal.
With reference to first aspect, the first of first aspect any possible implementation into the 4th kind of possible implementation, in the fifth possible implementation of the first aspect, the device further includes memory, and the memory and the signal picker, the analog-digital converter and the filter are electrically connected；The memory counts the analog electrocardiogram signal, the first digital electrocardiosignal and the second digital electrocardiosignal for depositing.
With reference to first aspect, the first of first aspect any possible implementation into the 5th kind of possible implementation, in the sixth possible implementation of the first aspect, which further includes display；The display, for the corresponding ecg wave form of the second number electrocardiosignal to be presented to user.
With reference to first aspect, the first of first aspect any possible implementation into the 5th kind of possible implementation, in a seventh possible implementation of the first aspect, which further includes bluetooth module, and the bluetooth module and the filter are electrically connected；For the second digital electrocardiosignal to be sent to mobile terminal by Bluetooth protocol in order to which the mobile terminal stores the second digital electrocardiosignal, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user in the bluetooth module.
It is possible thereby to which electrocardiosignal is saved and analyzed by mobile terminal, the complexity of pressure electrocardio measuring device can be reduced.
With reference to first aspect, the first of first aspect any possibility into the 5th kind of possible implementation
Implementation, in the 8th kind of possible implementation of first aspect, which includes general-purpose serial bus USB module, and the USB module and the filter are electrically connected；For exporting the second digital electrocardiosignal to mobile terminal according to USB connection protocol in order to which the mobile terminal stores the second digital electrocardiosignal, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user in the USB module.
The third possible implementation with reference to first aspect, in the 9th kind of possible implementation of first aspect, the device is batheroom scale, the batheroom scale further includes shell, first electric potential sensor is located on the surface of the shell at position corresponding with the left foot of the measured palm, which is located on the surface of the shell at position corresponding with the right crus of diaphragm of the measured palm.
Second aspect provides one kind for the electrometric method of the heart, and this method is executed by the device in any possible implementation of above-mentioned first aspect or first aspect.
The third aspect provides a kind of computer-readable medium, and for storing computer program, which includes the instruction for executing the method in second aspect.
To describe the technical solutions in the embodiments of the present invention more clearly, attached drawing needed in the embodiment of the present invention will be briefly described below, apparently, drawings described below is only some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic block diagram for the electrometric device of the heart of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the circuit of matched filter according to an embodiment of the present invention；
Fig. 3 is another schematic block diagram according to an embodiment of the present invention for the electrometric device of the heart；
Fig. 4 is another schematic block diagram according to an embodiment of the present invention for the electrometric device of the heart；
Fig. 5 is another schematic block diagram according to an embodiment of the present invention for the electrometric device of the heart；
Fig. 6 is another schematic block diagram according to an embodiment of the present invention for the electrometric device of the heart；
Fig. 7 is the schematic diagram of batheroom scale according to an embodiment of the present invention；
Fig. 8 is the schematic flow chart according to an embodiment of the present invention for the electrometric method of the heart.
Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that and described embodiment is a part of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art's every other embodiment obtained without making creative work, all should belong to the scope of protection of the invention.
To facilitate understanding of the present embodiment of the invention, the electrometric principle of the heart is introduced herein first.Heart is before mechanical contraction, it is dynamic that electric shock is generated first, generate bioelectricity, due to around heart tissue and body fluid can be conductive, so bioelectricity can be through organizing the conduction with body fluid to body surface, different potential changes is generated in body different parts, by two location contacts of two electric potential sensors and body surface, the variation of the potential difference at the two positions can be used to sense, it is electrocardiogram (Electrocardiogram, referred to as " ECG ") that the performance graph to be formed is recorded in the variation of this potential difference.
It is understood that in embodiments of the present invention, electric potential sensor can also be known as " electrode " or " electrocardioelectrode ", currently used Ag/AgCl electrode can be used, this is not limited by the present invention.
Fig. 1 shows according to an embodiment of the present invention for the electrometric device of the heart, as shown in Figure 1, device 10 includes: signal picker 11, analog-digital converter 12 and filter 13, the analog-digital converter 12 and the signal picker 11 are electrically connected, and the filter 13 and the analog-digital converter 12 are electrically connected:
The signal picker 11, for obtaining analog electrocardiogram signal；
The analog-digital converter 12, for the analog electrocardiogram signal to be converted to the first digital electrocardiosignal；
The filter 13 obtains the second digital electrocardiosignal, link of the link between the signal picker 11 and the filter 13 for filtering out present in the first digital electrocardiosignal by link bring interference signal.
Generally, the analog electrocardiogram signal that signal picker 11 is got is very faint, usually microvolt is to millivolt magnitude, for the ease of drawing ecg wave form, need to amplify electrocardiosignal, as shown in Figure 1, described device 10 further include: signal amplifier 14, signal amplifier 14 and signal picker 11 and analog-digital converter 12 are electrically connected, and the analog electrocardiogram signal for getting signal picker 11 amplifies processing, the analog electrocardiogram signal after obtaining enhanced processing.
And further, as shown in Figure 1, device 10 further includes memory 15, for storing the analog electrocardiogram signal, the first digital electrocardiosignal and the second digital electrocardiosignal of the acquisition of signal picker 11.
Optionally, as an example, filter 13 is matched filter, the circuit of matched filter is as shown in Figure 2, matched filter illustrated in fig. 2 includes N-1 delay time register, N number of multiplier and N number of adder, X (n)-X (n-N+1) indicates that digital electrocardiosignal, h (0)-h (N-1) indicate the filter factor of matched filter in Fig. 2Indicate multiplier,Indicate adder, Z-1Indicate that delay register, Y (n) indicate the digital electrocardiosignal exported after matched filter filtering.
Specifically, the N-1 delay time register is sequentially connected in series, the input terminal of the matched filter is coupled with the input terminal respectively with the input terminal of the 1st delay time register and the 1st multiplier, the output end of i-th of delay time register is coupled to the input terminal of i+1 multiplier, the output end of i-th of multiplier is coupled to the input terminal of i-th of adder, N number of adder is sequentially connected in series, and the output end of n-th adder is coupled with the output end of the matched filter；Wherein, which inputs from the input terminal of the matched filter, and the signal of matched filter output is the second digital electrocardiosignal；I is 1,2 ..., and N-1, N are the positive integer greater than 1.That is, the output signal Y (n) in Fig. 2 can be formulated are as follows: Y (n)=x (n) * h (0)+x (n-1) * h1+ ...+X (n-N+1) * h (N-1).
It is understood that the matched filter in Fig. 2 is only a kind of example, the matched filter in the embodiment of the present invention can also be the matched filter of other forms in the prior art, and this will not be detailed here.
Under normal conditions, circuit design is fixed after completing, therefore when designing matched filter it needs to be determined that the filter factor of matched filter, specific method can be the transmitting biggish reference signal R1 of one power ratio at signal picker 11, the reference signal S1 generated by reference signal R1 is acquired at the starting position of the circuit of matched filter, and the functional relation between S1 and R1 is usually expressed as formula (1):
S1=H*R1 (1)
Wherein, H indicate from signal picker 11 to the starting position of the circuit of matched filter from channel parameter matrix.
Further, according to formula (1)-(3) and the available filter factor of least square method:
H*=INV (A1T*A1)*A1T*S1 (2)
H** (3) H=1
In formula (2), H*Indicate the inverse matrix of H, H*In element be filter factor, the inversion operation of INV () representing matrix, A1 is the covariance matrix obtained after being handled collected reference signal S1, A1TIndicate the transposed matrix of A1.
After being filtered by matched filter, in the end of the circuit of matched filter, the signal S ' received can be expressed as formula (4):
S '=R1*H*H* (4)
It can be seen that, it is original reference signal in the signal that the end of the circuit of matched filter receives, thus, by matched filter to the first digital electrocardiosignal be filtered theoretically can be lossless obtain collected electrocardiosignal, in practical application scene, the available electrocardio with high s/n ratio
Signal.
It should be noted that, the form of filter in the embodiment of the present invention is not limited to linear filter, it can also be the nonlinear filter of other forms, the above method that filter factor is determined by way of transmitted reference signal is equally applicable to the determination of the filter factor of nonlinear filter.
Further, the interference signals such as electromyography signal, the breath signal of human body are also possible that in the analog electrocardiogram signal for the measured that signal picker 11 is got, so a common filter circuit (low-pass filter circuit) can be increased after matched filter, the interference signals such as electromyography signal, breath signal are filtered out.
And it is possible to carry out Wavelet Denoising Method processing to the digital electrocardiosignal after wave filter 13, the implementation of specific Wavelet Denoising Method can select according to actual needs, and this is not limited by the present invention.
Optionally, as an example, as shown in Figure 3, signal picker 11 includes the first electric potential sensor 111 and the second electric potential sensor 112, the signal picker 11 obtains analog electrocardiogram signal especially by the variation of the first electric potential sensor 111 and the potential difference of the second electric potential sensor 112 sensing first position and the second position.
Optionally, as an example, as shown in Figure 4, device 10 can also include voicefrequency circuit 16 and loudspeaker 161, voicefrequency circuit 16 and signal picker 11 are electrically connected, voicefrequency circuit 16 can be by the electric signal transmission after the audio data received conversion to loudspeaker 161, voice signal output is converted to by loudspeaker 161, thus device 10 can inform that measured's electrocardio measures success or not by voice prompting mode, such as, if signal picker 11 successfully gets the electrocardiosignal of measured, loudspeaker 161 can issue the prompt tone of " measuring successfully ", if signal picker 11 does not get the electrocardiosignal of measured successfully, loudspeaker 161 can issue " measurement failure, please re-measure " prompt tone, measured according to prompt tone i.e. can determine whether measurement at Function.
Optionally, as an example, as shown in Figure 5, device 10 further includes display 17, display 17 and signal picker 11, filter 13 are electrically connected, display 17 can be liquid crystal display (Liquid Crystal Display, referred to as " LCD "), measurement warning light 171 (can be light emitting diode) is provided on display 17, when signal picker 11 successfully gets the electrocardiosignal of measured, it is bright to measure warning light 171, informs the success of the measured signal acquisition, the measured can stop and the contact of device 10.If when measured stops contacting with device 10, signal picker 11 successfully gets the electrocardiosignal of the measured not yet, measurement indicator light 171 send warning signal (such as, measurement warning light 171 is constantly in glittering state), prompt the measured to carry out contacting completion measurement with device 10 again.
Or, when measured and device 10 contact, start to show time of measuring countdown on display 17, such as, if the electrocardiosignal of 11 successful acquisition measured of signal picker needs the time of 5s, when measured contacts with device 10, the countdown since 5 of display 17, when the number of display is 0, indicate that signal picker 11 has successfully got the electrocardiosignal of measured.
Further, display 17 is also used to present the corresponding ecg wave form of the second number electrocardiosignal to user.
Fig. 6 shows another schematic block diagram of device 10 according to an embodiment of the present invention, as shown in fig. 6, device 10 further include: bluetooth module 18.Thus device 10 can carry out pairing connection by bluetooth module 18 and mobile terminal, and mobile terminal can be smart phone, tablet computer or laptop etc..After device 10 and mobile terminal are attached, second digital electrocardiosignal is sent to mobile terminal by bluetooth module 18, mobile terminal stores the second digital electrocardiosignal, and the second digital electrocardiosignal is analyzed by the software of profession, ecg wave form is generated based on the second digital electrocardiosignal, and shows the ecg wave form on a display screen.The ecg wave form of the ecg wave form of generation and standard is compared after mobile terminal generates ecg wave form, the health status of measured is judged according to comparing result by the ecg wave form that standard can be stored in advance in mobile terminal.
Optionally, as an example, as shown in Figure 6, device 10 further include: universal serial bus (Universal Serial Bus, referred to as " USB ") module 19, device 10 can be attached according to USB connection protocol with mobile terminal by USB module 19, the second digital electrocardiosignal is transmitted to mobile terminal, in order to which mobile terminal handles the digital electrocardiosignal received.
It will be understood by those skilled in the art that Fig. 1 to device 10 shown in Fig. 6 structure not structure twin installation 10 restriction, may include perhaps combining certain components or different component layouts than illustrating more or fewer components.For example, device 10 can also include power supply, Wireless Fidelity (Wireless Fidelity, referred to as " the WiFi ") module etc. powered for all parts to device 10.
As a specific example, device 10 is batheroom scale shown in Fig. 7, batheroom scale includes shell, first electric potential sensor 111 is located at the palm of the left foot on shell position, second electric potential sensor 112 is located at the palm of the right crus of diaphragm on shell position, when the corresponding position of batheroom scale is arrived at the both feet station of measured, batheroom scale starting measurement gets the electrocardiosignal of measured by the variation that the first electric potential sensor 111 and the second electric potential sensor 112 incude the potential difference between measured's both feet.It is started switch alternatively, being provided with measurement on device 10, when measured's both feet station is to the corresponding position of device 10, measured opens the switch of the measurement on body device 10 manually, starts the electrocardiosignal for measuring measured.It is understood that the position of the first electric potential sensor 111 and the second electric potential sensor 112 can if device 10 is not batheroom scale
To be placed on any position convenient for contacting with measured's body.
Optionally, as illustrated in FIG. 7, batheroom scale can also include display 17, be provided with measurement warning light 171 on display 17, the specific works method of display 17 and measurement indicator light 171 with it is described above identical, details are not described herein.
Combine Fig. 1 to Fig. 7 to be described in detail above according to an embodiment of the present invention for the electrometric device of the heart, it is above-mentioned can be executed for the electrometric device 10 of the heart it is following for the electrometric method 1000 of the heart, as shown in figure 8, method 1000 includes:
S1100 obtains analog electrocardiogram signal；
The analog electrocardiogram signal is converted to the first digital electrocardiosignal by S1200；
S1300, it filters out present in the first digital electrocardiosignal by link bring interference signal, the second digital electrocardiosignal is obtained, which is to obtain the position of the analog electrocardiogram signal and filter out present in the first digital electrocardiosignal by the link between the position of link bring interference signal.
In embodiments of the present invention, optionally, this is filtered out present in the first digital electrocardiosignal by link bring interference signal, include: to be filtered out present in the first digital electrocardiosignal using matched filter by link bring interference signal, the filter factor of the matched filter be according between the first reference signal emitted at the position for obtaining the analog electrocardiogram signal, the second reference signal generated by first signal received at the position of the matched filter functional relation and least square method determine.
In embodiments of the present invention, optionally, which includes N-1 delay time register, N number of multiplier and N number of adder；Wherein, the N-1 delay time register is sequentially connected in series, the input terminal of the matched filter is coupled with the input terminal respectively with the input terminal of the 1st delay time register and the 1st multiplier, the output end of i-th of delay time register is coupled to the input terminal of i+1 multiplier, the output end of i-th of multiplier is coupled to the input terminal of i-th of adder, N number of adder is sequentially connected in series, and the output end of n-th adder is coupled with the output end of the matched filter；Wherein, which inputs from the input terminal of the matched filter, and the signal of matched filter output is the second digital electrocardiosignal；I is 1,2 ..., and N-1, N are the positive integer greater than 1.
In embodiments of the present invention, optionally, S1100 specifically: by the variation of the potential difference between sensing first position and the second position, obtain the analog electrocardiogram signal.
In embodiments of the present invention, optionally, this method further include: the analog electrocardiogram signal is amplified into processing, the analog electrocardiogram signal after obtaining enhanced processing；
Wherein, S1200 specifically: the analog electrocardiogram signal after the enhanced processing is converted into the first digital electrocardiosignal.
In embodiments of the present invention, optionally, this method further include: store the analog electrocardiogram signal, the first digital electrocardiosignal and the second digital electrocardiosignal.
In embodiments of the present invention, optionally, this method further include: the corresponding ecg wave form of the second number electrocardiosignal is presented to user.
In embodiments of the present invention, optionally, it specifically may is that the corresponding ecg wave form of user's the second digital signal of presentation and the second digital electrocardiosignal be sent to mobile terminal by Bluetooth protocol, in order to which the mobile terminal stores the second digital electrocardiosignal, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user.
In embodiments of the present invention, optionally, it specifically may is that the corresponding ecg wave form of user's the second digital signal of presentation and exported the second digital electrocardiosignal to mobile terminal according to general-purpose serial bus USB connection protocol, in order to which the mobile terminal stores the second digital electrocardiosignal, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user.
Therefore, it is according to an embodiment of the present invention to be used for the electrometric method of the heart, the digital electrocardiosignal being converted into collected analog electrocardiogram signal is filtered, filter out hardware link bring interference signal, the accuracy of signal is improved, so that also can successfully realize that electrocardio is measured in the case where leading number is less, it is possible thereby to make device that there is lesser volume, so that electrocardio measurement is entered average family, brings everyday home health care for domestic consumer.
Those of ordinary skill in the art may be aware that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Professional technician can use different methods to achieve the described function each specific application, but such implementation should not be considered as beyond the scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, system, the specific work process of device and unit of foregoing description can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit
Or communication connection, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, and component shown as a unit may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, the functional units in various embodiments of the present invention may be integrated into one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.
If the function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a computer readable storage medium.Based on this understanding, substantially the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products technical solution of the present invention in other words, the computer software product is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.
It is described above; only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and anyone skilled in the art is in the technical scope disclosed by the present invention; it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
- One kind being used for the electrometric device of the heart, which is characterized in that described device includes: signal picker, analog-digital converter and filter, and the signal picker and the analog-digital converter are electrically connected, and the analog-digital converter and the filter are electrically connected；Wherein, the signal picker, for obtaining analog electrocardiogram signal；The analog-digital converter, for the analog electrocardiogram signal to be converted to the first digital electrocardiosignal；The filter obtains the second digital electrocardiosignal, link of the link between the signal picker and the filter for filtering out present in the described first digital electrocardiosignal by link bring interference signal.
- The apparatus according to claim 1, it is characterized in that, the filter is matched filter, and the filter factor of the filter is that functional relation and least square method of the basis at the position of the signal picker between the first reference signal of transmitting, the second reference signal generated by first signal received at the position of the filter determine.
- The apparatus of claim 2, which is characterized in that the matched filter includes N-1 delay time register, N number of multiplier and N number of adder；Wherein, the N-1 delay time register is sequentially connected in series, the input terminal of the matched filter is coupled with the input terminal respectively with the input terminal of the 1st delay time register and the 1st multiplier, the output end of i-th of delay time register is coupled to the input terminal of i+1 multiplier, the output end of i-th of multiplier is coupled to the input terminal of i-th of adder, N number of adder is sequentially connected in series, and the output end of n-th adder and the output end of the matched filter are coupled；Wherein, the described first digital electrocardiosignal is inputted from the input terminal of the matched filter, and the signal of the matched filter output is the described second digital electrocardiosignal；I is 1,2 ..., and N-1, N are the positive integer greater than 1.
- Device according to any one of claim 1 to 3, which is characterized in that the signal picker includes the first electric potential sensor and the second electric potential sensor, and the signal picker is specifically used for:The analog electrocardiogram signal is obtained by the variation that first electric potential sensor and second electric potential sensor sense potential difference between first position and the second position.
- Device according to any one of claim 1 to 4, which is characterized in that described device further includes signal amplifier, and the signal amplifier and the signal picker and the analog-digital converter are electrically connected；The signal amplifier obtains at amplification for the analog electrocardiogram signal to be amplified processing Analog electrocardiogram signal after reason；Wherein, the analog-digital converter is specifically used for: the analog electrocardiogram signal after the enhanced processing is converted to the first digital electrocardiosignal.
- Device according to any one of claim 1 to 5, which is characterized in that described device further includes memory, and the memory and the signal picker, the analog-digital converter and the filter are electrically connected；The memory, for storing the analog electrocardiogram signal, the first digital electrocardiosignal and the second digital electrocardiosignal.
- Device according to any one of claim 1 to 6, which is characterized in that described device further includes display；The display, for the corresponding ecg wave form of the second number electrocardiosignal to be presented to user.
- Device according to any one of claim 1 to 6, which is characterized in that described device further includes bluetooth module, and the bluetooth module and the filter are electrically connected；For the described second digital electrocardiosignal to be sent to mobile terminal by Bluetooth protocol in order to the digital electrocardiosignal of mobile terminal storage described second, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user in the bluetooth module.
- Device according to any one of claim 1 to 6, which is characterized in that described device includes general-purpose serial bus USB module, and the USB module and the filter are electrically connected；For exporting the described second digital electrocardiosignal to mobile terminal according to USB connection protocol in order to the digital electrocardiosignal of mobile terminal storage described second, and the corresponding ecg wave form of the second number electrocardiosignal is presented to user in the USB module.
- Device according to claim 4, it is characterized in that, described device is batheroom scale, the batheroom scale further includes shell, first electric potential sensor is located on the surface of the shell at position corresponding with the left foot of the measured palm, and second electric potential sensor is located on the surface of the shell at position corresponding with the right crus of diaphragm of the measured palm.
- One kind being used for the electrometric method of the heart, which is characterized in that the described method includes:Obtain analog electrocardiogram signal；The analog electrocardiogram signal is converted into the first digital electrocardiosignal；It filters out present in the described first digital electrocardiosignal by link bring interference signal, the second digital electrocardiosignal is obtained, the link is to obtain the position of the analog electrocardiogram signal and filter out present in the described first digital electrocardiosignal by the link between the position of link bring interference signal.
- According to the method for claim 11, which is characterized in that described to filter out present in the described first digital electrocardiosignal by link bring interference signal, comprising:Filtered out present in the described first digital electrocardiosignal using matched filter by link bring interference signal, the filter factor of the matched filter be according between the first reference signal emitted at the position for obtaining the analog electrocardiogram signal, the second reference signal generated by first signal received at the position of the matched filter functional relation and least square method determine.
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|---|---|---|---|
| PCT/CN2016/092183 WO2018018570A1 (en) | 2016-07-29 | 2016-07-29 | Device and method for measuring electrocardiogram |
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| CN112603327A (en) * | 2019-12-18 | 2021-04-06 | 华为技术有限公司 | Electrocardiosignal detection method, device, terminal and storage medium |
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| CN108601544B (en) | 2021-02-19 |
| WO2018018570A1 (en) | 2018-02-01 |
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