CN110269606A - A kind of 32 road electrocardio of combined type/electromyographic signal collection system - Google Patents

A kind of 32 road electrocardio of combined type/electromyographic signal collection system Download PDF

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Publication number
CN110269606A
CN110269606A CN201910715041.1A CN201910715041A CN110269606A CN 110269606 A CN110269606 A CN 110269606A CN 201910715041 A CN201910715041 A CN 201910715041A CN 110269606 A CN110269606 A CN 110269606A
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road
electrode
signal
collection plate
signal acquiring
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CN110269606B (en
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刘纪红
张恒贵
李阳
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Northeastern University China
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Northeastern University China
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30Input circuits therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/319Circuits for simulating ECG signals
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/389Electromyography [EMG]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7225Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235Details of waveform analysis
    • A61B5/725Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters

Abstract

The present invention designs a kind of higher 32 road signal acquiring system of flexibility, and system is mainly made of electrode, 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate, MCU module, power module;Electrode is connected by FPC winding displacement with 12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate;12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate are connect by shielding line with MCU module;Power module is 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate and MCU module power supply.The present invention is flexibly practical, and one side system can both carry out 32 lead signals acquisitions, can also carry out the acquisition of 12 lead signals of standard;Another aspect system can both acquire electrocardio by the way that collection plate is arranged, and can also acquire myoelectricity.Two kinds of signal acquisitions both can be used alone, and can also be used together.

Description

A kind of 32 road electrocardio of combined type/electromyographic signal collection system
Technical field
Originally practical to be related to a kind of multichannel electrocardio/electromyographic signal collection system based on compound electrode.
Background technique
The common electrocardiograph of hospital is 12 leads, and the electrode used is absolute electrode, such as " electrode holder ", " suction ball Electrode ", " disposable patch electrode " etc..The collected signal of 12 leads is not very accurately, to collect the heart in order to be more accurate Electric signal is needed in the more place acquisition electrocardiosignals of human body.Therefore electrocardiosignal sampled point at 32 has been selected on human body, And devise 32 road signal acquiring systems.Domain type flexible combination electrode can be used in the system, compared to absolute electrode, combination Electrode is more convenient.Meanwhile the system also has the function of electromyography signal measurement, the relationship between research electrocardio and myoelectricity provides It is convenient.
Summary of the invention
A kind of the purpose of the present invention is to propose to sampling numbers based on flexible combination electrode more, the higher 32 road heart of flexibility Electricity/electromyographic signal collection system.
To achieve the purpose of the present invention the technical solution adopted is that:
A kind of higher 32 road signal acquiring system of flexibility, system is mainly by electrode, 12 road ecg signal acquiring plates, 8 Road electrocardio/electromyographic signal collection plate, MCU module, power module composition;Electrode passes through FPC winding displacement and 12 road ecg signal acquirings Plate and 8 roads electrocardio/electromyographic signal collection plate are connected;12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate are logical Shielding line is crossed to connect with MCU module;Power module be 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate and MCU module power supply.
The advantages of present invention has compared with prior art is:
1, inventive sensor, the selection of electrode are more flexible, both can be used compound electrode, also can be used commonly use it is medical Electrode.
2, the present invention can be flexibly practical, and one side system can both carry out 32 lead signals acquisitions, can also be marked Quasi- 12 lead signals acquisition;Another aspect system can both acquire electrocardio by the way that (switching) collection plate is arranged, and can also acquire flesh Electricity.Two kinds of signal acquisitions both can be used alone, and can also be used together.
3, with shielded FPC soft arranging wire, FPC quality transmission lines are gently small in size for electrocardiosignal transmission line use of the present invention, Route is not neatly mixed and disorderly, facilitates signal transmission, electrocardio measurement, also can be reduced external interference.Believed using interval method transmission electrocardio Number, reduce mutual interference.
4, signal acquiring board of the invention has hardware filtering circuit, can filtering clutter so that the signal that ADC is sampled All it is useful signal, improves electrocardiosignal quality.
Detailed description of the invention
Fig. 1 is FPC winding displacement wiring schematic diagram of the invention.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is interface adapter board schematic diagram of the invention.
Specific embodiment
The present invention is described in more detail by 1-3 with reference to the accompanying drawings of the specification.
A kind of higher 32 road signal acquiring system of flexibility, system is mainly by electrode, 12 road ecg signal acquiring plates, 8 Road electrocardio/electromyographic signal collection plate, MCU module, power module composition;
Electrode is connected by FPC winding displacement with 12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate;For Shielding outer signals, FPC winding displacement outer layer have plated one layer of metal layer;Simultaneously in order to reduce the interference between adjacent electrocardiosignal, FPC line is connected using interval method, has GND transmission line between every adjacent electrocardiosignal.S is that one section of FPC is soft as shown in Figure 1: Winding displacement, 1,2, ---, N-1, N be the 1st road electrocardiosignal to the road N electrocardiosignal.A transmission is spaced between adjacent electrocardiosignal Line, the transmission line connect the end GND of collection plate.
12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate are connect by shielding line with MCU module;
Power module is 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate and MCU module power supply, power supply Module uses lithium battery, voltage required for being exported by voltage conversion circuit, and lithium battery can be carried out by charging circuit Charging.
12 road ecg signal acquiring plates are by 12 electrocardiogram acquisition chips (AD8232 chip or AD8233 chip) and periphery electricity Road is constituted, and peripheral circuit is configured basically according to the databook of chip.By each core in 12 road ecg signal acquiring plates The end-IN (or+IN) of the Differential Input of piece, which links together, makees common end, and the other end makees measurement end.Measurement end can connect combination electricity Pole or multiple absolute electrodes, and one absolute electrode of public termination.Each chip has right leg drive (RLD) output, and entire 12 only one right leg drive of road ecg signal acquiring plate export (total right leg drive).It, can in order to control the output of right leg drive After each chip RLD output end plus a switch, the switch other end are connected to total right leg drive, thus can control each Whether the RLD of chip is connected to total right leg drive, facilitates the configuration and debugging of right leg drive.Total right leg drive connects an independent electrical Common mode interference is reduced by the common-mode signal after reverse phase by electrode-feedback to human body in pole.And 8 road electrocardios/electromyographic signal collection plate 8 tunnel electrocardiogram acquisition module of core and 8 road myoelectricity acquisition modules composition.The core chips that wherein electrocardiogram acquisition module uses is The design of AD8232 (or AD8233), periphery circuit design and 12 road ecg signal acquiring plates are essentially identical.And myoelectricity module makes With precision instrument amplifier and multichannel operational amplifier.Instrument amplifier amplifies collected difference electrocardio letter, shows The model AD8221 or AD620 of the instrument amplifier of example property;Multichannel operational amplifier is for being filtered electrocardiosignal Processing, the model TL084 of illustrative multichannel operational amplifier;During electromyographic signal collection, signal first passes through instrument Amplifier amplifies 50 times, is then filtered by high pass, low pass, filter range is 20~500Hz;Later using 50HZ trapper, filters out Hz noise.Last signal exports after amplifying 30 times using an amplifier.High pass, is fallen into low pass Wave, amplification are made of multichannel operational amplifier chip, capacitor and resistance.
8 road electrocardios/8 tunnel electrocardiogram acquisition module of electromyographic signal collection plate core and 8 road myoelectricity acquisition modules and peripheral circuit Composition;8 road electrocardios/electromyographic signal collection plate can switch selection measurement electrocardio or myoelectricity by switching;
8 road myoelectricity modules have 8 end-IN inputs, 8 end+IN inputs and 8 output ends;Wherein 8 end-IN inputs are logical Cross whether switch control connects together;The electromyography signal of one or more muscle can be measured;One piece can thus be measured Or the electromyography signal of muti-piece muscle.8 road electrocardios/electromyographic signal collection plate can switch selection measurement electrocardio or flesh by switching Electricity.The component encapsulations such as the capacitance resistance that all collection plates are used select patch small in size to encapsulate, to reduce shared by collection plate Area.Using the FPC soft arranging wire with shielded layer between electrode and collection plate, the signal transmission of collection plate and MCU module is used Winding displacement with shielding, shielded layer can reduce outer signals interference caused by it in signals transmission.Between use simultaneously Electrocardiosignal is transmitted every method, reduces the interference between adjacent electrocardiosignal.
8 road myoelectricity modules use precision instrument amplifier and multichannel operational amplifier.Instrument amplifier will be collected Difference electrocardio letter amplifies, the model AD8221 or AD620 of illustrative instrument amplifier;Multichannel operational amplifier is used It is filtered in electrocardiosignal, the model TL084 of illustrative multichannel operational amplifier;Electromyographic signal collection mistake Cheng Zhong, signal first pass through instrument amplifier chip and amplify 50 times, are then filtered by high pass, low pass, filter range It is 20~500Hz;Later using 50HZ trapper, Hz noise is filtered out;Last signal is using an amplifier amplification 30 Output after times;High pass, low pass, trap, amplification are made of multichannel operational amplifier chip, capacitor and resistance.
Electrode is using 6 unification compound electrodes and 4 unification compound electrodes.6 unification compound electrodes are that 6 path electrodes of selection are combined into one A big compound electrode;In addition to using compound electrode or using absolute electrode, increase by one between absolute electrode and collection plate A interface adapter board, by FPC interface conversion at the electrode interface of other interfaces.
The electrode of acquisition system can be replaced flexibly, other common electrode for medical service such as electrode holder, suction ball electrode etc. are substituted for. When acquiring 32 road heart signal, using compound electrode (compound electrode has been filed on patent application, application number: 201910235583.9, And compound electrode mentioned here combination number is reduced to 6 tunnels or 4 tunnels) so that it is convenient to which being bonded for electrode and human body, reduces fitting Time.The compound electrode used simultaneously is flexible electrode, can preferably be bonded skin, improves the comfort level in measurement.6 unification groups Composite electrode is that 6 path electrodes of selection are combined into a big compound electrode.In addition to using compound electrode, independent electrical is also can be used in system Pole (such as: " electrode holder ", " suction ball electrode ", " disposable patch electrode "), it is only necessary to increase by one between electrode and collection plate A interface adapter board, by FPC interface conversion at the electrode interface of other interfaces.Adapter plate structure is as shown in Figure 2.
MCU module can be programmed with FPGA, can also use 32 ready-made road capture cards, illustratively, capture card model Are as follows: the USB3120 data collecting card of Beijing Art Technology Development Co., Ltd..MCU module is responsible for believing the output of collection plate It number is AD converted, the end PC is transferred to by USB line after being later packaged data.Power module be signal acquisition card for ECG and MUC module provides power supply;Power module uses lithium battery, voltage required for being exported by voltage conversion circuit, and lithium electricity Pond can be charged by charging circuit.
The system can also be used alone in addition to that can measure 32 road electrocardiosignals, each collection plate.Measurement standard 12 is led Connection, it is only necessary to use one piece of 12 road ecg signal acquiring plate.Electromyography signal is measured, 8 road electrocardios/electromyographic signal collection is selected The myoelectricity of plate measures function.Electromyography signal and electrocardiosignal, 8 road collection plates selection measurement myoelectricity, 12 road collection plates are measured simultaneously Measure electrocardio.On the one hand the relationship between research myoelectricity and electrocardio, another aspect can then be removed in electrocardio by algorithm in this way Myoelectricity interference so that treated electrocardiosignal better quality.

Claims (8)

1. a kind of higher 32 road signal acquiring system of flexibility, it is characterised in that:
System is mainly by electrode, 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate, MCU module, power module Composition;
Electrode is connected by FPC winding displacement with 12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate;
12 road ecg signal acquiring plates and 8 roads electrocardio/electromyographic signal collection plate are connect by shielding line with MCU module;
Power module is 12 road ecg signal acquiring plates, 8 road electrocardios/electromyographic signal collection plate and MCU module power supply.
2. the higher 32 road signal acquiring system of a kind of flexibility according to claim 1, it is characterised in that:
Electrode is using 6 unification compound electrodes and 4 unification compound electrodes.
3. the higher 32 road signal acquiring system of a kind of flexibility according to claim 1, it is characterised in that:
12 road ecg signal acquiring plates are mainly made of 12 electrocardiogram acquisition chips and peripheral circuit;
The end-IN or+IN of the Differential Input of each chip is linked together in 12 road ecg signal acquiring plates and makees common end, separately Make measurement end in one end;Measurement end can connect compound electrode or multiple absolute electrodes, and one absolute electrode of public termination;Each chip There is right leg drive RLD output, and entire 12 road ecg signal acquiring plate only one total right leg drive output;In order to control the right side The output of leg driving, can be after each chip RLD output end plus a switch, the switch other end are connected to total right leg drive output On, whether the RLD for controlling each chip is connected in total right leg drive output, facilitates the configuration and debugging of right leg drive;It is total right Leg driving output connects an absolute electrode, by the common-mode signal after reverse phase by electrode-feedback to human body, reduces common mode interference.
4. the higher 32 road signal acquiring system of a kind of flexibility according to claim 1, it is characterised in that:
8 road electrocardios/8 tunnel electrocardiogram acquisition module of electromyographic signal collection plate core and 8 road myoelectricity acquisition modules and peripheral circuit composition; 8 road electrocardios/electromyographic signal collection plate can switch selection measurement electrocardio or myoelectricity by switching;
8 road myoelectricity modules have 8 end-IN inputs, 8 end+IN inputs and 8 output ends;Wherein 8 end-IN inputs are by opening Pass controls whether to connect together;The electromyography signal of one or more muscle can be measured.
5. the higher 32 road signal acquiring system of a kind of flexibility according to claim 4, it is characterised in that:
The core chips that 8 road myoelectricity modules use is AD8221 chip and TL084 chip;AD8221 is instrument amplifier, will be poor Letter is divided to amplify;TL084 chip is 4 channel operation amplifiers;During electromyographic signal collection, signal first passes through AD8221 core Piece amplifies 50 times, is then filtered by high pass, low pass, filter range is 20~500Hz;It is fallen into later using 50HZ Wave device, filters out Hz noise;Last signal exports after amplifying 30 times using an amplifier;High pass, low pass, trap, amplification It is made of TL084 chip, capacitor and resistance.
6. the higher 32 road signal acquiring system of a kind of flexibility according to claim 2, it is characterised in that:
6 unification compound electrodes are that 6 path electrodes of selection are combined into a big compound electrode;In addition to using compound electrode or using solely Vertical electrode, increases an interface adapter board, by FPC interface conversion at the electrode of other interfaces between absolute electrode and collection plate Interface.
7. the higher 32 road signal acquiring system of a kind of flexibility according to claim 1, it is characterised in that:
MCU module can be programmed with the FPGA of altera or with 32 ready-made road capture cards, and MCU module is responsible for collection plate Output signal be AD converted, the end PC is transferred to by USB line after being later packaged data.
8. the higher 32 road signal acquiring system of a kind of flexibility according to claim 1, it is characterised in that:
This system can measure 32 road electrocardiosignals, and each collection plate can also be used alone;12 lead of measurement standard, it is only necessary to Use one piece of 12 road ecg signal acquiring plate;
It measures electromyography signal selection 8 road electrocardios/electromyographic signal collection plate myoelectricity and measures function;Electromyography signal and the heart are measured simultaneously Electric signal, 8 road collection plates selection measurement myoelectricity, 12 road collection plates measure electrocardio;So on the one hand between research myoelectricity and electrocardio Relationship, the myoelectricity interference in electrocardio on the other hand can be then removed by algorithm, so that treated electrocardiosignal quality is more It is good.
CN201910715041.1A 2019-08-05 2019-08-05 Combined 32-channel electrocardio/electromyogram signal acquisition system Active CN110269606B (en)

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