CN106725443A - Cardiac electricity detecting system - Google Patents
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- 230000000747 cardiac effect Effects 0.000 title claims abstract description 31
- 230000005611 electricity Effects 0.000 title claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 4
- 210000001364 upper extremity Anatomy 0.000 claims description 31
- 210000003141 lower extremity Anatomy 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 238000002955 isolation Methods 0.000 abstract description 4
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- 238000006243 chemical reaction Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
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- 238000012360 testing method Methods 0.000 description 3
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- 235000007164 Oryza sativa Nutrition 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
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- 235000009566 rice Nutrition 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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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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- 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
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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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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
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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
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
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Abstract
Present disclose provides a kind of cardiac electricity detecting system, including：EGC sensor, senses the electrocardiosignal of user；Instrument amplifier, receives the electrocardiosignal from EGC sensor and carries out enhanced processing；Analog-digital converter, receives the output signal from instrument amplifier and converts analog signals into data signal；Electromagnetic isolation circuit, receives the data signal from analog-digital converter and transmits data signal in the state of external electromagnetic signal is isolated；And signal processor, receive the electrocardiographicdigital digital signals from electromagnetic isolation circuit and the ecg wave form figure of user is exported after being processed.
Description
Technical field
This disclosure relates to a kind of cardiac electricity detecting system, more particularly to a kind of ECG detecting for shortening analog signal transmission distance
System.
Background technology
The primary frequency range of human ecg signal is 0.05Hz~100Hz, and amplitude is about 0~4mV, and signal is very micro-
It is weak.Due to being generally contaminated with other bioelectrical signals in electrocardiosignal, electromagnetic field in vitro based on 50Hz Hz noises in addition
Interference so that electrocardio noise background is stronger, and measuring condition is more complicated.
Modern cardiac electricity detecting system is all divided into analog portion and numerical portion, the traditional cardioelectric monitor system shown in Fig. 1
The module diagram of analog portion.As shown in figure 1, by bandpass filtering (including high-pass filtering, 50 Hz notch and low pass rate
Ripple), the most of noise in original electro-cardiologic signals is eliminated, and to the signal after analog-digital converter (ADC) input after filtering.
Electrocardiosignal because frequency is low, signal is small, because supply network is omnipresent, by surrounding instruments equipment and human body point
Cloth electric capacity is obscured among electrocardiosignal, is introduced in the form of displacement current, and its intensity is enough to flood otiose electrocardiosignal.Cause
The most universal also especially severe of the Hz noise of this 50Hz, is the main interference source of electrocardiosignal.In order to remove human body or survey
Power frequency 50Hz in amount system is disturbed, it is necessary to be suppressed with bandstop filter (i.e. trapper).But this AFE(analog front end) portion
Point filtering, especially comprehending at its LPF and 50 Hz notch causes that circuit is complicated, leaches and originally belong to the heart
The live part of electric signal, causes distorted signals and phase distortion, and increase cost.Meanwhile, traditional cardiac electricity detecting system,
Analog-to-digital conversion (ADC) is carried out to the analog signal from electrocardioelectrode using the ADC that (insertion) is carried in MCU, due to traditional
MCU is installed in apart from the distant place of electrode, and this causes ADC also distant apart from electrode so that analog signal from
It is collected to start that various external noises are applied to before being transferred to AD conversion unit, cause to be input to the noise of ADC
Than not high, follow-up display, treatment and cardiac electrical monitoring result are have impact on.And these preposition hardware filters also can in itself
Circuit noise is produced to be superimposed upon in electrocardiosignal.Therefore, people improve these preposition hardware filters performance in itself as far as possible
It is superimposed upon in electrocardiosignal with the circuit noise for avoiding its own from producing, while to before comprising these preposition hardware filters
End transmission path carries out various shieldings, is superimposed upon in electrocardiosignal with the noise signal for preventing surrounding.This obviously can increase electrocardio
The manufacturing cost of detecting system.Accordingly it is desirable to obtain it is a kind of before analog-to-digital conversion is carried out cause acquired original electrocardio
Signal does not receive outside noise, particularly Hz noise, the analog electrocardiogram signal of influence, so as to be follow-up signal transacting as far as possible
Good signal input is provided.
The content of the invention
In order to solve above mentioned problem of the prior art, the cardiac electricity detecting system of the disclosure provides one kind to be shortened as far as possible
The technological means of the transmission range of D/A conversion unit and electrocardioelectrode.According to the cardiac electricity detecting system of the disclosure, including：Electrocardio
Sensor, senses the electrocardiosignal of user；Instrument amplifier, receives the electrocardiosignal from EGC sensor and is amplified place
Reason；Analog-digital converter, receives the output signal from instrument amplifier and converts analog signals into data signal；And signal
Processor, receives the electrocardiographicdigital digital signals from analog-digital converter and the ecg wave form figure of user is exported after being processed.
According to the cardiac electricity detecting system of the disclosure, wherein the EGC sensor includes the first upper limbs electrode, the second upper limbs
Electrode and lower limb flexible electrode, are all disposed within the three of mattress separate parts so that user crouching on mattress when,
First upper limbs electrode and the second upper limbs electrode are contacted with human upper limb and gather human ecg signal, and lower limb flexible electrode and human body
Lower limb are contacted, and right leg drive signal is input into the input of driven-right-leg circuit.
According to the cardiac electricity detecting system of the disclosure, wherein the width of the lower limb flexible electrode can be covered under the whole of human body
Limb.
According to the cardiac electricity detecting system of the disclosure, wherein the first upper limbs electrode, the second upper limbs electrode and lower limb flexible electrical
Extremely silver fiber electrode.
According to the cardiac electricity detecting system of the disclosure, wherein the first upper limbs electrode, the second upper limbs electrode and lower limb flexible electrical
Pole is rectangle and parallel to each other, and the first upper limbs electrode, the second upper limbs electrode and lower limb flexible electrode and the mattress
Head it is parallel.
According to the cardiac electricity detecting system of the disclosure, wherein the first upper limbs electrode and the second upper limbs electrode width are 10 lis
Rice is to 15 centimetres.
According to the cardiac electricity detecting system of the disclosure, wherein the first upper limbs electrode, the second upper limbs electrode and lower limb flexible electrical
Extremely it is adjacent between the two at intervals of 15 centimetres to 20 centimetres, compartment is made up of bafta.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and it is used to explain the principle of the disclosure together with specification.
Shown in Fig. 1 be existing cardiac electricity detecting system module diagram.
Shown in Fig. 2 be cardiac electricity detecting system according to the disclosure principle schematic.
The module diagram of the cardiac electricity detecting system according to the disclosure shown in Fig. 3.
Power frequency in the signal based on existing cardiac electricity detecting system and according to the output of the detecting system of the disclosure shown in Fig. 4
The correlation curve of interfering noise amplitude.
Shown in Fig. 5 be the ECG signal that traditional Electro-cadiogram signals detector system is detected example.
The example of the ECG signal detected according to disclosure Electro-cadiogram signals detector system shown in Fig. 6..
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in implementation method do not represent all implementation methods consistent with the disclosure.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the disclosure.
The term used in the disclosure is the purpose only merely for description specific embodiment, and is not intended to be limiting and originally opens.
" one kind ", " described " and " being somebody's turn to do " of singulative used in disclosure and the accompanying claims book is also intended to include many number forms
Formula, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refer to and comprising
One or more are associated to list any or all of project may combine.
It will be appreciated that though various information may be described using term first, second, third, etc. in the disclosure, for example
First electrocardiosignal and the second electrocardiosignal, but these information should not necessarily be limited by these terms, and the first electrocardiosignal is referred to alternatively as
Two electrocardiosignals, vice versa.These terms are only used for being distinguished from each other open same type of information.Depending on linguistic context, such as exist
Word that this is used " if " can be construed to " ... when " or " when ... " or " in response to determining ".
In order that those skilled in the art more fully understand the disclosure, with reference to the accompanying drawings and detailed description to this public affairs
Open and be described in further detail.
Shown in Fig. 2 be cardiac electricity detecting system according to the disclosure principle schematic.Shown in Fig. 3 according to the disclosure
The module diagram of cardiac electricity detecting system.As shown in Fig. 2 two, the top stripes on mattress sample are divided into EGC sensor.
Electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B are shown as in Fig. 3.Electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B
May be constructed an electric capacity, the electrocardio current potential of the two capacitive coupling body surface.When using electrocardiogram acquisition pad, user generally couches
Heart is located at position between electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B so that electrocardiogram acquisition sensors A and
The potential difference of upper and lower two positions of electrocardiogram acquisition sensor B measurement hearts.Because electrocardiosignal signal intensity is weak, easily it is disturbed,
So, electrocardiosignal is further processed using the signal processor for referring to below.For example, first, will be from electrocardio
The electrocardiosignal of collection sensors A and electrocardiogram acquisition sensor B is amplified.Then, amplified signal is filtered, with
Removal interference noise simultaneously generates effective electrocardiosignal.
As shown in Fig. 2 low pass filter each is configured with after electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B,
That is RC wave filters.With electronic product increasingly life-stylize, the radio broadcasting of various frequency ranges, television transmitting station, communication apparatus, thunder
Roll up aerial electromagnetic wave up to the work for waiting.The interference of these high-frequency electromagnetics can be also connected by measuring system with human body
Wire is introduced, and may cause the unstable of measurement result, and measuring system can be prevented when serious from working.This causes under various occasions
Electromagnetic interference is increasingly severe, so electrocardiosignal does not only have the Hz noise and low frequency, direct current point of 50Hz in gatherer process
The interference of amount, also higher than human normal electrocardio HFS frequency high-frequency harmonic severe jamming, such as higher than 100Hz
High-frequency harmonic.Additionally, the electronic equipment that signal transacting is used can also produce noise of instrument in itself, this kind of interference typically has
Frequency characteristic higher.It is therefore desirable to carry out LPF using RC wave filters.
As shown in Figures 2 and 3, the electrocardiosignal after RC wave filters carry out LPF is imported into instrument amplifier and enters
Row enhanced processing.Instrument amplifier is typically the key of front-end circuit, and because the electrocardiosignal of human body has, amplitude is small, frequency
It is low, be easily disturbed, the features such as unstable, randomness is strong so that the design to electrocardio amplifying circuit proposes very strict requirements,
Especially the selection of amplifier is particularly significant.Needed from gain, frequency response, input impedance, common mode inhibition during selection amplifier
Considered than several aspects such as, noise, drifts, such as selected some high input impedances, low noise, low drifting, Gao Zeng
The differential amplifier of benefit and high cmrr (CMRR), to prevent from exporting saturation, make output stable, reduction common mode disturbances
Transmission.
Then, the output signal of instrument amplifier as shown in Figure 2 is output directly to analog-digital converter ADC and is simulated letter
Number to data signal conversion, thus, shorten collection of simulant signal to analog-to-digital conversion transmission range.
Although instrument amplifier is directly connected with ADC in the cardiac electricity detecting system shown in Fig. 2, according to actual needs,
Can also be as shown in figure 3, access high-pass filter in instrument amplifier and ADC, to filter one before analog-to-digital conversion is carried out
A little low frequency parts, eliminate low-frequency noise.The high-pass filter leaches signal that frequency is less than 0.05 hertz so as to eliminate base
Line is disturbed.For example breathe the baseline drift and the change of ECG (electrocardiosignal) amplitude for causing.The baseline drift that breathing causes can be seen
Into the sinus property composition (sine curve) for being a frequency addition ECG signal to breathe.The amplitude and frequency of this sine component
It is change.The change of the amplitude of the caused ECG signal of breathing can reach 15%.The frequency of baseline drift be approximately from
The 0.3Hz of 0.1Hz mono-.
Then, digital analog converter ADC will convert analog signals into data signal and output carries out subsequent transmission and treatment.
As shown in Figures 2 and 3, signal processor MCU is received directly from ADC or the digital heart from ADC via electromagnetic isolation circuit
Electric signal simultaneously exports the ecg wave form figure of user after being processed.
As shown in Fig. 2 according to the ecg signal acquiring mattress electrode of disclosure cardiac electricity detecting system mattress shape.Such as Fig. 2 institutes
Show, collection pad as depicted is divided into five parts from top to bottom, and Part I and Part III are that conventional pure cotton cloth is made, cloudy
Shadow part Part II, Part IV and Part VI are silver fiber conductive fabric, used as respectively as electrocardiogram acquisition sensor
A, electrocardiogram acquisition sensor B and lower limb flexible electrode C, these electrodes can be silver fiber electrode.Silver fiber conductive fabric A and B
Conductive button can be arranged with as upper limbs electrocardioelectrode, can be by the electrode part A and B of fiber conductive fabric from human body
The electric signal of collection detects circuit transmission to instrument amplifier via lead.Passed using electrocardiogram acquisition sensors A and electrocardiogram acquisition
Sensor B measures the electrocardiosignal of human body.
In order to adapt to the collection of human chest electrocardiosignal and leg signal, the electrocardiogram acquisition sensors A and electrocardio
Collection sensor B width is 7 centimetres to 15 centimetres.Because, on the one hand, electrocardiogram acquisition sensors A and electrocardiogram acquisition are sensed
Device B needs respectively positioned at the two ends of user's heart when in use, and the upper end of heart is limited with the distance of shoulder.So,
The width of electrode is limited by this distance.On the other hand, within the specific limits, the width of electrode is wider, then electrode and human body
Contact area it is bigger, waveform is more clear, without clutter.For example, the width of electrode is less than 7 centimetres, the then crest that mattress is gathered
Value is likely less than 1.0 volts, and this will cause puzzlement to the measurement validity of electrocardiosignal parameter.Another further aspect, the width of electrode
It is wider, then need more materials to manufacture electrode, which increase the manufacturing cost of collection pad.Balance measurement result and cost,
The width of electrocardiogram acquisition sensors A and the width of electrocardiogram acquisition sensor B may be selected to be 7 centimetres to 15 centimetres.Alternatively, electrocardio
The width for gathering sensors A is identical with the width of electrocardiogram acquisition sensor B.Inventor has found by actual measurement, when electrocardio is adopted
The crest value gathered when collecting the electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B width of pad by 9 centimetres is about 1.7 volts,
And the value is enough for the measurement of heart physiological parameter.Additionally, electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor
If the width of B continues to increase from 12 centimetres, crest value is not dramatically increased correspondingly.Based on this, it is preferable that electrocardiogram acquisition
The width of sensors A and the width of electrocardiogram acquisition sensor B are advisable for 9 centimetres to 12 centimetres.Therefore, electrocardiogram acquisition sensors A
Width with electrocardiogram acquisition sensor B is preferably 12 centimetres.
As shown in Fig. 2 electrocardiogram acquisition sensors A, electrocardiogram acquisition sensor B and lower limb flexible electrode it is adjacent both it
Between at intervals of 15 centimetres to 20 centimetres, the compartment is made up of bafta.It is theoretical to show with experimental data, electrocardiogram acquisition
Sensors A has aobvious with the measurement of the electrocardiosignal of the distance for being gathered at electrocardiogram acquisition sensor B intervals between the two
Write influence.The electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B of electrocardiosignal are gathered respectively positioned at the upper/lower terminal of heart
The signal quality of acquisition is best.Interval is wide or narrow signal noise can be caused too many or wave amplitude is too small.Electrocardiogram acquisition pad
Electrode between interval preferred distance be 15 centimetres and compare the cardiac size for being adapted to most people, under this distance, adopt
Substantially, signal to noise ratio is big for the crest of the waveform of the electrocardiosignal of collection.
Additionally, the length of the electrocardiogram acquisition sensors A, electrocardiogram acquisition sensor B and lower limb flexible electrode is 70 lis
Rice to 100 centimetres, preferably 90 centimetre lengths.As described above, human ecg signal is a kind of weak electric signal.Electrocardiosignal is usual
Can be disturbed by various noises, the interference of such as human motion.In the present embodiment, electrocardiogram acquisition sensors A and electrocardiogram acquisition
Sensor B is rectangle and is respectively an entirety.This allows human body to be stood up on collection pad, while keeping human body and electrocardio
There is larger area to contact for collection sensors A and electrocardiogram acquisition sensor B.Electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B
It is parallel to each other, and electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B are parallel with the head of collection pad.This causes that electrocardio is adopted
Interval holding between collection sensors A and electrocardiogram acquisition sensor B is constant.So slept on this collection pad in domestic consumer
When stand up the collection for also not interfering with electrocardiosignal.The accuracy of measurement result has been effectively ensured.
Part VI C can be as leg driving electrodes.Silver fiber conductive fabric A, B and C as electrocardiogram acquisition circuit have
There is larger area, therefore, the signal intensity of collection will be bigger and signal is more stable.
Additionally, electrocardiogram acquisition sensors A and electrocardiogram acquisition sensor B can include silver fiber conductive fabric, it is also possible to copper
Nickel alloy fiber conductive fabric.Conductive fabric is conductor, can play a part of potential difference signal measurement.Conductive fabric is not only
Can with human body capacitive coupling, and because conductive fabric is relatively thin, and with toughness, its can also physically with adopt
Collection pad body is preferably fitted, and can cause that collection pad has more comfortableness.In order that obtain user lie on the collection pad more comfortably,
The silver fiber conductive fabric of electrocardiogram acquisition sensors A, electrocardiogram acquisition sensor B, lower limb flexible electrode and the host conductive cloth
Thickness be 0.5 millimeter to 1.2 millimeters, preferably 1 millimeter, can the electric conductivity of holding electrode can keep the softness of sheet again
Degree.
Inventor has carried out having carried out contrast test using two kinds of systems simultaneously to testing participant with a collection of aspiration, below
Table 1 shows this test result.The data that curve shown in Fig. 4 is based on shown in table 1 below are drawn and are formed.
Table 1
| Subject | BSB | BSB(E) | BSB(F) |
| A | Noise amplitude (mm) | 1.12 | 0.79 |
| B | Noise amplitude (mm) | 5.58 | 3 |
| C | Noise amplitude (mm) | 1.47 | 0.75 |
| D | Noise amplitude (mm) | 0.8 | 0.77 |
| E | Noise amplitude (mm) | 1.97 | 1.22 |
| F | Noise amplitude (mm) | 2.47 | 0.9 |
| G | Noise amplitude (mm) | 2.65 | 1.68 |
| H | Noise amplitude (mm) | 1.42 | 1.43 |
| I | Noise amplitude (mm) | 1.44 | 1.22 |
| J | Noise amplitude (mm) | 0.59 | 0.65 |
| K | Noise amplitude (mm) | 1.13 | 1.03 |
| M | Noise amplitude (mm) | 0.68 | 0.79 |
| N | Noise amplitude (mm) | 0.73 | 0.85 |
| O | Noise amplitude (mm) | 0.9 | 0.84 |
| P | Noise amplitude (mm) | 0.93 | 1 |
| Q | Noise amplitude (mm) | 1.74 | 1.44 |
Table 1 can significantly reduce the power frequency in data signal evident from the Electro-cadiogram signals detector system for using the disclosure
The height of noise amplitude BSB (F).
Shown in Fig. 5 be the ECG signal that traditional Electro-cadiogram signals detector system is detected example.Shown in Fig. 6 according to this
The example of the ECG signal that open Electro-cadiogram signals detector system is detected.Compare both it can be found that industrial frequency noise amplitude significantly drops
It is low.
Therefore, the separate type ADC according to the disclosure is after the simple process for being placed on instrument amplifier, isolation circuit it
Before, ADC built-in relative to MCU is placed on most rear class, and closer to electrocardiogram acquisition end, the analog signal approach that is interfered significantly becomes
It is short so that electrocardiosignal can be changed into data signal by ADC earlier, hence it is evident that the ratio between signal and noise to be improve, so as to improve
Waveform quality.
In sum, electrocardioelectrode is believed using the ADC being integrated in microcontroller with cardioelectric monitor circuit before
Number carry out that analog-to-digital conversion is different, the disclosure using the ADC independently of MCU, i.e., after the treatment of preposition EGC analog simple circuit,
Carry out analog-to-digital conversion so that it is data signal that the analogue data of electrocardioelectrode output is able to by analog-to-digital conversion as early as possible, so in electricity
The mainly data signal, such circuit layout strong antijamming capability, it can be deduced that more transmitted between pole and ADC and MCU
Accurate cardioelectric monitor result.
Therefore, using independently of MCU, or be plug-in ADC so that its as close to electrocardioelectrode, such MCU's
Input signal is changed into the data signal of ADC outputs from analog electrocardiogram electrode signal before, therefore improves cardioelectric monitor result
Accuracy.
The general principle of the disclosure is described above in association with specific embodiment, however, it is desirable to, it is noted that to this area
For those of ordinary skill, it is to be understood that whole or any steps or part of disclosed method and device, Ke Yi
In any computing device (including processor, storage medium etc.) or the network of computing device, with hardware, firmware, software or
Combinations thereof is realized that this is that those of ordinary skill in the art use them in the case where the explanation of the disclosure has been read
Basic programming skill can be achieved with.
Therefore, the purpose of the disclosure can also by run on any computing device a program or batch processing come
Realize.The computing device can be known fexible unit.Therefore, the purpose of the disclosure can also be included only by offer
Realize that the program product of the program code of methods described or device is realized.That is, such program product is also constituted
The disclosure, and the storage medium of such program product that is stored with also constitutes the disclosure.Obviously, the storage medium can be
Any known storage medium or any storage medium for being developed in the future.
It may also be noted that in the apparatus and method of the disclosure, it is clear that each part or each step can be to decompose
And/or reconfigure.These decompose and/or reconfigure the equivalents that should be regarded as the disclosure.Also, perform above-mentioned series
The step for the treatment of can order naturally following the instructions perform in chronological order, but simultaneously need not necessarily sequentially in time
Perform.Some steps can be performed parallel or independently of one another.
Above-mentioned specific embodiment, does not constitute the limitation to disclosure protection domain.Those skilled in the art should be bright
It is white, depending on design requirement and other factors, various modifications, combination, sub-portfolio and replacement can occur.It is any
Modification, equivalent and improvement made within the spirit and principle of the disclosure etc., should be included in disclosure protection domain
Within.
Claims (7)
1. a kind of cardiac electricity detecting system, including：
EGC sensor, senses the electrocardiosignal of user；
Instrument amplifier, receives the electrocardiosignal from EGC sensor and carries out enhanced processing；
Analog-digital converter, receives the output signal from instrument amplifier and converts analog signals into electrocardiographicdigital digital signals；With
And
Signal processor, receives the electrocardiographicdigital digital signals from analog-digital converter and the ecg wave form of user is exported after being processed
Figure.
2. cardiac electricity detecting system according to claim 1, wherein the EGC sensor includes the first upper limbs electrode, second
Upper limbs electrode and lower limb flexible electrode, are all disposed within the three of mattress separate parts so that user is crouching in mattress
When upper, the first upper limbs electrode and the second upper limbs electrode are contacted with human upper limb and gather human ecg signal, and lower limb flexible electrode
Contacted with human body lower limbs, right leg drive signal is input into the input of driven-right-leg circuit.
3. cardiac electricity detecting system according to claim 1 and 2, wherein the width of the lower limb flexible electrode can cover human body
Whole lower limb.
4. cardiac electricity detecting system according to claim 3, the first upper limbs electrode, the second upper limbs electrode and lower limb are flexible
Electrode is silver fiber electrode.
5. cardiac electricity detecting system according to claim 4, the first upper limbs electrode, the second upper limbs electrode and lower limb are flexible
Electrode is rectangle and parallel to each other, and the first upper limbs electrode, the second upper limbs electrode and lower limb flexible electrode and the bed
The head of pad is parallel.
6. cardiac electricity detecting system as claimed in claim 4, wherein the first upper limbs electrode and the second upper limbs electrode width are
10 centimetres to 15 centimetres.
7. cardiac electricity detecting system as claimed in claim 4, wherein the first upper limbs electrode, the second upper limbs electrode and lower limb are soft
Property electrode it is adjacent between the two at intervals of 15 centimetres to 20 centimetres, compartment is made up of bafta.
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