CN104188651A - Electrocardiogram monitoring device and control method of electrocardiogram monitoring device - Google Patents
Electrocardiogram monitoring device and control method of electrocardiogram monitoring device Download PDFInfo
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- CN104188651A CN104188651A CN201410412564.6A CN201410412564A CN104188651A CN 104188651 A CN104188651 A CN 104188651A CN 201410412564 A CN201410412564 A CN 201410412564A CN 104188651 A CN104188651 A CN 104188651A
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Abstract
The invention discloses an electrocardiogram monitoring device which is formed by a reference electrode, a differential signal electrode (1), a differential signal electrode (2) and a host computer. The reference electrode, the differential signal electrode (1) and the differential signal electrode (2) are respectively formed by two or more signal electrode plates in a wire-connection mode. Wire connection means that the signal end is respectively connected with the multiple (two or more) electrode plates through wires, and at the moment, a signal obtained by the signal end is formed by superposing signals obtained through the electrode plates. According to the electrocardiogram monitoring device, the signal electrodes or the reference electrode formed by the multiple electrode plates in the wire-connection mode are/is adopted; on one hand, the electrocardiogram monitoring device can be in better contact with the unsmooth surface of the human body; on the other hand, the N wire-connection electrode plates adjacent in arrangement position are adopted for obtaining the signals, and according to the signal superposing principle, random disturbance voltage signals such as electromyographic signals can become 1/ of the original disturbance voltage signals through the wire-connection electrode plates arranged in this way. Compared with currently-universal electrocardiogram standard electrodes, the electrocardiogram monitoring device can obtain stable electrocardiogram signals low in noise under the condition that the wire-connection electrodes are attached to the skin.
Description
Technical field
The present invention relates to a kind of electrocardiograph monitoring device and control method thereof, belong to the technical field of medical apparatus and instruments.
Background technology
The bio electricity variation of heart is reflected on body surface by heart conductive tissue and body fluid around, making the each position of body surface that regular electricity also occur in each cardiac cycle changes, measurement electrode is positioned over to the cardiac electric change curve that certain position of body surface records out, is exactly electrocardiogram.In electrocardio is measured, human body is equivalent to a signal source, and the impedance of human body is equivalent to signal source internal impedance, and this internal impedance depends primarily on the contact impedance of electrode and skin.He not only varies with each individual, and also may be because there not being in the same time very large variation at the same position of same human body, and mobility scale can reach 2～150k Ω, so human body is a unsettled high internal resistance signal source.Therefore, require ecg amplifier to there is high input impedance (more than 2M Ω).
The electrocardio current potential of body surface is generally below 5mv, and the little wave amplitude that its high fdrequency component (until 2kHZ left and right) forms less (20 μ v left and right) is often subject to the interference of myoelectricity, skin electricity, civil power and internal system noise.Wherein myoelectricity can reduce by experimenter's cooperation as far as possible; It is the main source disturbing during electrocardio is measured that civil power 50HZ disturbs, be common mode interference signal for ecg amplifier, so make great efforts to improve ecg amplifier common mode rejection ratio CMRR, to ensure also effectively to suppress 50HZ common mode disturbances, particular importance in the design debug of ecg amplifier in amplifying electrocardiosignal.Making great efforts to reduce internal system noise is also an importance in design.
At present, in order to reduce myoelectricity, the impact of skin electricity on electrocardiosignal, conventionally need to make electrode contact with human body well, a kind of typical ECG electrode setting method is as follows:
1, the specially good effect sand sheet on special disposable electrode backing is dabbed to skin surface, the limit conversion direction that is close to, removes skin surface horny layer;
2, repeatedly wipe skin surface with 75% medical alcohol cotton balls, remove surperficial oils and fats;
3, the disposable electrode backing of tearing, will make it to cement with skin containing electroconductive paste electrode slice, then the self-adhesive paper of electrode perimeter will be clung to skin surface, to fix electrode;
4, conducting wire is connected to corresponding electrode.
But, in order to obtain the less electrocardiosignal of interference, needing to adopt step very loaded down with trivial detailsly to lay electrode, and need higher level professional technology, patient is also not easy to Self-operating, and this has greatly limited the scope of application of electrocardiograph monitoring device.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of electrode to lay easy time, can reduce the electrocardiograph monitoring device that myoelectricity and the skin signal of telecommunication disturb electrocardiosignal.
Technical scheme: electrocardiograph monitoring device of the present invention, comprise described reference electrode and differential signal electrode 1, differential signal electrode 2 and main frame, the first differential signal electrode by plural signal electrode sheet line with form, line with refer to signal end and be connected with plural electrode slice with wire respectively.
Further, reference electrode, differential signal electrode 1, differential signal electrode 2 are by 3 plate electrode sheet line and formations.
Further, main frame comprises electrocardio detection module, analog-digital converter and primary processor, each signal electrode and reference electrode are connected to respectively electrocardio detection module, and described electrocardio detection module is connected to analog-digital converter, and signal is connected to primary processor by described analog-digital converter.
Further, also comprise air pump, air valve, baroceptor, blood pressure measurement module, described air pump, air valve, baroceptor are connected to respectively blood pressure measurement module, and described blood pressure measurement module is connected with primary processor.
Further, also comprise data storage cell, button, WiFi module, LCDs, described data storage cell, button, WiFI module, LCDs are connected to respectively primary processor.
The present invention also comprise above-mentioned pressure electrocardio measuring device in the technical scheme of control method of primary processor, it is characterized in that, comprise the following steps:
1) system initialization;
2) control WiFi module interconnection network;
3) receive push button signalling;
4) if the push button signalling receiving is electrocardio measuring-signal, send enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receives the process analog-to-digital conversion module data after treatment that electrocardio measurement module gathers, and carry out step 7); If the push button signalling receiving is blood pressure measurement signal, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving is electrocardio blood pressure measurement signal, this sends enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receive that electrocardio measurement module gathers through analog-to-digital conversion module data after treatment, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving, for reading electrocardio blood pressure result data, carry out step 5); If do not receive push button signalling, return to step 3);
5) data in reading out data memory element, and be presented in described LCDs after processing;
6) detect data and whether be all read, if all do not read, operating procedure 5), if be all read, operating procedure 11);
7) process the data that read, and be presented in described LCDs;
8) detect measurement module and whether all completed measurement, if do not complete, operating procedure 7); All complete if measure, export final result, and operating procedure 9);
9) export final result and be stored to data storage cell;
10) detect whether be connected to the webserver, if be connected to the webserver, final result bed is delivered to the webserver, and operating procedure 11); If be not connected to the webserver, directly operating procedure 11);
11) finish.
The present invention compared with prior art, its beneficial effect is: the present invention adopts line and electrode, line and electrode refer to that signal end uses respectively wire to be connected with the electrode slice of multiple (more than two), and the signal that at this moment signal end obtains is that the signal that each electrode slice obtains is formed by stacking.Signal electrode or the reference electrode of multiple electrode slice lines and formation, one convenient can be better with and irregular human body surface contact, on the other hand, adopt that N line and electrode slice obtain signal adjacent to one another at position, the principle of stacking of basis signal, random interference voltage signal--for example electromyographic signal, can become original interference voltage signal through the line that so arranges and electrode slice
thereby can make this electrocardiograph monitoring device stick in the situation of skin compared with at present general electrocardio normal electrode with electrode online, just can obtain the low stable electrocardiosignal again of noise.
In addition, the method that the present invention adopts electrocardio measurement module to combine with blood pressure measurement module make measure the cardiac electrical while can Measure blood pressure value, both person easy to use used, and the electrocardio value recording respectively during again than difference and pressure value more can reflect the truth of physiological health.Because the situation of beating for same individual heart should be associated with blood pressure situation, should there is its certain degree of association, this degree of association must be tried to achieve in the time that electrocardio value and pressure value are measured simultaneously, otherwise meaningless.
Brief description of the drawings
Fig. 1 is the electrode slice connection diagram in the present invention;
Fig. 2 is electrocardiograph monitoring device hardware block diagram of the present invention;
Fig. 3 is the electrocardio detection module circuit diagram in electrocardiograph monitoring device of the present invention;
Fig. 4 is the main processor circuit figure that comprises analog-digital converter in electrocardiograph monitoring device of the present invention;
Fig. 5 is the LCDs circuit diagram in electrocardiograph monitoring device of the present invention;
Fig. 5 is the WiFi module circuit diagram in electrocardiograph monitoring device of the present invention;
Fig. 7 is the blood pressure measurement module circuit diagram in electrocardiograph monitoring device of the present invention;
Fig. 8 is the key circuit figure in electrocardiograph monitoring device of the present invention;
Fig. 9 is the data storage cell circuit diagram in electrocardiograph monitoring device of the present invention;
Figure 10 is the power circuit diagram in electrocardiograph monitoring device of the present invention;
Figure 11 is control method algorithm flow chart of the present invention;
Figure 12 is the EGC pattern comparison diagram that the EGC pattern that records of electrocardiograph monitoring device of the present invention and existing electrocardiograph monitoring device record;
Figure 13 is the figure that ECG detection device display screen of the present invention shows.
Detailed description of the invention
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment:
The present embodiment is set to the prototype of wrist formula electrocardiograph monitoring device, those skilled in the art can expect this ECG detection device can also be set to arm type heart electric detection means, or extraction electrode goes between the rear in vitro formula electrocardiograph monitoring device arranging and do not affect realization of the present invention.
In the present embodiment, differential signal electrode 1, differential signal electrode 2, reference electrode structure are identical, are structure as shown in Figure 1, and this figure is the three cube electrode sheet lines and the electrode schematic diagram that is interconnected and forms in the invention process example.Three fritters of below are electrode slice, and each electrode slice forms line and electrode by be connected to signal end with Dao Xian Fen Do.Pressure electrocardio measuring device of the present invention arranges differential signal electrode 1, differential signal electrode 2 and reference electrode.Each electrode cloth three fritter lines and copper gold-plated electrode sheet or stainless steel electrode sheet, every fritter electrode slice is as shown in Figure 1 of a size of 14 × 9mm2 (concrete size is determined by casing size).Three cube electrode sheet lines are in order better to contact with wrist position with one side, are the interference in order to reduce skin electricity and myoelectricity on the other hand.Basis signal superposition principle, interference voltage signal through line with become original interference voltage signal
(N is the electrode slice sheet number of line and electrode, N=3 here) doubly, the original multiple reducing of the larger interference ratio of N is larger, and ecg wave form is more clear.Because skin electricity and myoelectricity are for electrocardiosignal, its interference is the smaller the better.
Be illustrated in figure 2 the wrist formula electrocardio blood pressure detector structured flowchart in this embodiment, wherein differential signal electrode 1 end line and three electrode slices be placed in the positive apparent direction left and right sides of wrist formula electronic blood pressure electrocardiograph monitoring device casing of the present embodiment, left side electrode slice of cloth (thumb is by putting place), two electrode slices of right side cloth (forefinger or middle finger are by putting place); The interference effect of air pump can effectively avoid blood pressure measurement time to electrocardio measuring circuit is set like this; Differential signal electrode 2 end lines and three electrode slices and reference electrode 2 end lines and three electrode slices stick on blood pressure cuff and put and be placed in left hand wrist.In Fig. 2, differential signal electrode 1 end, differential signal electrode 2 ends and reference electrode end are communicated to respectively electrocardio detection module, and electrocardio detection module is connected to analog-digital converter again, and described analog-digital converter is connected with primary processor by general Purpose IO Interface again; Also be connected with blood pressure measurement module respectively in order to the air pump, air valve, the baroceptor that detect blood pressure, blood pressure measurement module is connected by UART serial ports with primary processor again, data storage cell is connected by SPI serial ports with primary processor, button is connected with primary processor by general Purpose IO Interface, liquid crystal display is connected with primary processor by general Purpose IO Interface frequently, and WiFi module is connected with primary processor by UART serial ports.In addition, being also provided with power supply is each module, parts and unit power supply.
The structure of the electrocardiograph monitoring device in the present embodiment: adopt a circuit board, same power supply, on and off switch closes, and detects blood pressure, display of blood pressure value, pulse wave and electrocardio display waveform simultaneously, and simultaneously in liquid crystal display screen display.
By hand-held signal electrode, as shown in Figure 3 the careful electro-detection module of the electrocardiosignal of human body amplify and Filtering Processing after, the ARM primary processor M051 sending into as shown in Figure 4 by AD_ECG carries out AD conversion, the science and technology NuMicro M051 of the new Tang of this processor adopting type 32-bit microprocessor.ARM primary processor herein, with analog-digital conversion function, is equivalent to the combination of described primary processor and analog-digital converter module.The data analysis that does signal in primary processor draws corresponding EGC parameter.ARM primary processor starts to measure by UART (7BP_TX in Fig. 4, Fig. 7, BP_RX port) transmitted signal order blood pressure module simultaneously, and after blood pressure measurement completes, module is passed blood pressure data back primary processor by UART.Wherein blood pressure measurement master chip is middle clever electronics SH79F6488, and its program using is provided by middle clever electronics; What pressure transducer adopted is the US9111 letter chip of Taiwan connection Xing Wei, and its program using is provided by Taiwan connection Xing Wei.
ARM primary processor M051 obtains after EGC parameter and blood pressure data, can pass through 8080 interface modes (LCMD0[0:15 in Fig. 4, Fig. 5], LCMCS, LCMRS, LCMWR, LCMRD, RST port) cardiac electrical waveform and parameter and pressure value are presented on TFT display screen.Simultaneously M051 is by SPI interface (SPISS0 in Fig. 4, Fig. 9, MISO0, MOSI0, SPICLK0 port) spread F LASH storage, cardiac electrical waveform and parameter and pressure value can be deposited in FLASH storage.If there is in addition external network, primary processor M051 can pass through UART interface (ICECLK in Fig. 4, Fig. 6, ICEDAT port) and be connected with WIFI module, can transfer data on the server of appointment by WIFI module.
As shown in Fig. 8 and Figure 10, man-machine interface also has three buttons except TFT display screen, wherein has an on and off switch button, an options button (SELKEY) and acknowledgement key (OKKEY).Can operate easily by these three buttons.
Power acquisition 800mA/h lithium battery power supply, can open or shutdown system by the control by and off switch button.
As shown in figure 10,5V5 port is the power interface of whole system, and each power supply that it generates through manostat ME6206 is given a module supply power.If VCCE is to primary processor and the power supply of other numeral point, VLCD is to the power supply of TFT display screen, and aVCC and aVEE are to electrocardio module for power supply.
Wherein electrocardio detection module circuit is formed electrocardiosignal is amplified and processed by instrument amplifier and filter circuit.AD sampler is integrated in ARM master chip.The data that sampling obtains are stored in FLASH chip by SPI interface.Blood pressure measurement module gathers pulse waveform And and this is analyzed and process, and the blood pressure data obtaining is transferred to ARM master chip by UART.
As shown in Figure 4, be software control algorithm flow chart of the present invention, particularly, comprise the following steps:
1) system initialization;
2) control WiFi module interconnection network;
3) receive push button signalling;
4) if the push button signalling receiving is electrocardio measuring-signal, send enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receives the process analog-to-digital conversion module data after treatment that electrocardio measurement module gathers, and carry out step 7); If the push button signalling receiving is blood pressure measurement signal, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving is electrocardio blood pressure measurement signal, this sends enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receive that electrocardio measurement module gathers through analog-to-digital conversion module data after treatment, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving, for reading electrocardio blood pressure result data, carry out step 5); If do not receive push button signalling, return to step 3);
5) data in reading out data memory element, and be presented in described LCDs after processing;
6) detect data and whether be all read, if all do not read, operating procedure 5), if be all read, operating procedure 11);
7) process the data that read, and be presented in described LCDs;
8) detect measurement module and whether all completed measurement, if do not complete, operating procedure 7); All complete if measure, export final result, and operating procedure 9);
9) export final result and be stored to data storage cell;
10) detect whether be connected to the webserver, if be connected to the webserver, final result bed is delivered to the webserver, and operating procedure 11); If be not connected to the webserver, directly operating procedure 11);
11) finish.
Be illustrated in figure 5 the wrist formula ECG detection device and the ecg wave form that uses conventional ECG detection device to measure same user of the present embodiment, can find that the wrist formula electrocardiograph monitoring device of the present embodiment and the result that conventional ECG detection device records are almost in full accord.
Be illustrated in figure 6 the figure of wrist formula ECG detection device display screen demonstration of the present invention, realized and adopted ecg wave form, pulse wave and heart rate, the pressure value detected design concept with showing simultaneously, be convenient to patient's use and doctor and observe.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.
Claims (6)
1. an electrocardiograph monitoring device, it is characterized in that, comprise described reference electrode and differential signal electrode 1, differential signal electrode 2 and main frame, the first differential signal electrode by plural signal electrode sheet line with form, line with refer to signal end and be connected with plural electrode slice with wire respectively.
2. a kind of electrocardiograph monitoring device according to claim 1, is characterised in that, described reference electrode, differential signal electrode 1, differential signal electrode 2 are by 3 plate electrode sheet line and formations.
3. a kind of electrocardiograph monitoring device according to claim 1, it is characterized in that, described main frame comprises electrocardio detection module, analog-digital converter and primary processor, each signal electrode and reference electrode are connected to respectively electrocardio detection module, described electrocardio detection module is connected to analog-digital converter, and signal is connected to primary processor by described analog-digital converter.
4. a kind of electrocardiograph monitoring device according to claim 3, it is characterized in that, also comprise air pump, air valve, baroceptor, blood pressure measurement module, described air pump, air valve, baroceptor are connected to respectively blood pressure measurement module, and described blood pressure measurement module is connected with primary processor.
5. according to a kind of electrocardiograph monitoring device described in claim 3 or 4, it is characterized in that, also comprise data storage cell, button, WiFi module, LCDs, described data storage cell, button, WiFI module, LCDs are connected to respectively primary processor.
6. the control method of the primary processor in pressure electrocardio measuring device according to claim 5, is characterized in that, comprises the following steps:
1) system initialization;
2) control WiFi module interconnection network;
3) receive push button signalling;
4) if the push button signalling receiving is electrocardio measuring-signal, send enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receives the process analog-to-digital conversion module data after treatment that electrocardio measurement module gathers, and carry out step 7); If the push button signalling receiving is blood pressure measurement signal, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving is electrocardio blood pressure measurement signal, send enabling signal to analog-to-digital conversion module, analog-to-digital conversion module transmitted signal starts electrocardio measurement module, and receive that electrocardio measurement module gathers through analog-to-digital conversion module data after treatment, send enabling signal to blood pressure measurement module, and receive the data that blood pressure measurement module sends, carry out step 7); If the push button signalling receiving, for reading electrocardio blood pressure result data, carry out step 5); If do not receive push button signalling, return to step 3);
5) data in reading out data memory element, and be presented in described LCDs after processing;
6) detect data and whether be all read, if all do not read, operating procedure 5), if be all read, operating procedure 11);
7) process the data that read, and be presented in described LCDs;
8) detect measurement module and whether all completed measurement, if do not complete, operating procedure 7); All complete if measure, export final result, and operating procedure 9);
9) export final result and be stored to data storage cell;
10) detect whether be connected to the webserver, if be connected to the webserver, final result is delivered to the webserver, and operating procedure 11); If be not connected to the webserver, directly operating procedure 11);
11) finish.
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| CN107708547A (en) * | 2015-06-12 | 2018-02-16 | 皇家飞利浦有限公司 | Surface myoelectric drawing system, logger and method |
| CN109717843A (en) * | 2017-10-27 | 2019-05-07 | 贵州骏江实业有限公司 | A kind of palmus detection system and detection method |
| CN108523877A (en) * | 2018-03-23 | 2018-09-14 | 南京中医药大学 | A kind of electrocardiosignal quality discrimination method and its ecg analysis method |
| CN108523877B (en) * | 2018-03-23 | 2021-02-09 | 南京中医药大学 | Electrocardiosignal quality identification method and electrocardiosignal analysis method |
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