CN1768701A - Integrated intelligent type physiological signal sensor - Google Patents
Integrated intelligent type physiological signal sensor Download PDFInfo
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- CN1768701A CN1768701A CNA2005100279947A CN200510027994A CN1768701A CN 1768701 A CN1768701 A CN 1768701A CN A2005100279947 A CNA2005100279947 A CN A2005100279947A CN 200510027994 A CN200510027994 A CN 200510027994A CN 1768701 A CN1768701 A CN 1768701A
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Abstract
The invention relates to a physiological signal sensor and amending device used in the physiological signal collection and amendment, especially providing an integrated intelligent physiological signal sensor which integrates the physiological collection, enlargement and amendment. The invention can be used as one integrated modularized device to connect the DAQ plate to be widely used in variable medical apparatuses and health products.
Description
Technical field
The present invention relates to be applied to the physiological signal sensor and the conditioning device of physiological signal collection and conditioning, relate in particular to a kind of collection physiological signal collection and signal and amplify incorporate integrated, the intelligent type physiological signal sensor of conditioning.This modular construction integrated, that intelligent type physiological signal sensor can be used as an integration directly is connected with the DAQ plate and is widely used in multiple medical instruments and equipment, in the health-oriented products.
Background technology
Physiological signal sensor is an indispensable instrument of gathering physiological signal, and is the key that the physiological signal quality is gathered in decision.Special extensive use in life science and medical clinical practice.The present physiological signal sensor overwhelming majority is that signals collecting is separated with amplifying to nurse one's health.Pick off only provides the collection of physiological signal, and the signal of gathering needs to carry out mould/number conversion and subsequent processes thereof after special physiology amplifier amplifies conditioning.Because physiological signal is of a great variety, and the requirement of various signals amplification conditionings is not quite identical, therefore, physiological signal sensor and physiological signal amplifier can only design according to special application, to satisfy different needs, cause device type various in style, unit price is high, has limited popularizing of physiological signal monitor greatly.
In order to satisfy clinical treatment and life science demand to physiological signal monitor, design integrated physiological signal sensor, collection physiological signal collection and signal amplify conditioning and are one, produce dissimilar special-purpose integrated physiological signal sensors according to different physiological signal purposes, can satisfy multiple demands of applications, not only can simplify the internal structure of multiple physiologic signal monitoring instrument and reduce equipment cost, also may reduce product price significantly, promote the extensive use of this kind equipment because of the standardization of product.
Summary of the invention
The present invention is in order to overcome the deficiencies in the prior art, and satisfy purpose of the present invention, the technical scheme that is adopted is, design integrated physiological signal sensor, the collection of collection physiological signal and amplification conditioning are one, gather bioelectrical signals through electrode or transducer, or through transducer with human body non-electrical signal (temperature, pressure) change the signal of telecommunication into after, adopt high cmrr, the high-performance bioelectric amplifier is exported after amplifying conditioned signal, and the signal of output can directly carry out A/D converter and enter mould/number conversion.Signal output is voltage signal, and output area meets the requirement of most A/D converter inputs at 0-5V.
Integrated physiological signal sensor is by electrode or transducer, constitute in conjunction with the high-performance biological amplifier, the signal of telecommunication gathered by electrode or transducer or the conversion non-electrical signal is to import the high-performance bioelectric amplifier by lead behind the signal of telecommunication, and the signal after amplifier amplifies is exported by lead.
According to different physiological signal types, can design different, tailored version physiological signal integrated transducer, include but not limited to integrated electromyographic signal pick off, integrated core signal sensor, integrated EEG signals pick off, integrated skin conductance rate pick off, integrated photoelectricity positive displacement pulse transducer, integrated temperature sensor, integrated respiration pickup.
The design intelligent type physiological signal sensor also can satisfy purpose of the present invention, method is with above-mentioned various integrated physiological signal sensors separately or several combinations as required, application sets molding microprocessor microcontroller carries out mould/number conversion simultaneously, signal condition, the coding back directly is connected with PC with the form of USB interface, directly signal is conveyed into PC, further handles.Add signals collecting by this intelligent type physiological signal sensor, transmission shows, analyzes special purpose computer software, can make any PC become the collection of collection physiological signal, and the powerful tool into one is analyzed in monitoring.
Intelligent type physiological signal sensor includes but not limited to, brain electricity, electrocardio, myoelectricity intelligent type physiological signal sensor, intelligent skin conductance rate pick off, intelligent photoelectricity pulse transducer, intelligent respiration pickup, intelligent body temperature trans, Intelligence sensor system etc.
In integrated physiological signal sensor, according to the purposes difference, the bioelectrical signals amplifier can adopt universal electrode amplifier and tailored version physiological signal preamplifier to carry out the amplification of physiological signal.
Universal electrode amplifier
● electrode directly is connected with pick off, and the preposition amplification of physiological signal is provided.
● the single channel amplifying circuit, each electrode amplifier only amplifies one road signal.
● what the electrode amplifier was exported is voltage signal, output area 0-5V.
● the signal of electrode amplifier output is directly imported the input port of data acquisition board.
● the power supply of electrode amplifier is supplied as 5V, derives from data acquisition board.
Tailored version physiological signal preamplifier
Tailored version physiological signal preamplifier structure is mainly used in the multichannel ecg signal acquiring, and cardiac monitoring is particularly suitable for the amplification and the conditioning of electrocardiosignal, but also can be used for other physiological signals.This amplifier is mainly used in and amplifies the electrocardiosignal of 0.05Hz to 100Hz.The characteristics of circuit design are to strengthen common mode rejection ratio, and the common frequency of filtering 50Hz disturbs, filtering owing to move between human body and electrode produce the unidirectional current of 300mv.This circuit adopts the power supply supply of 5V, adopts 4 joint AA rechargeable battery powered equally.A in the circuit diagram
1Operational amplifier can be deleted, and depends on the size of resistance.Outfan connects TMS320DSP after connecting ADS8321 in the circuit diagram.When used on this road, outfan was directly connected to output port, and the signal after will amplifying by terminal and lead is directly delivered to DAQ and pulled output voltage 0-5V scope.Amplifier also can be used for other physiological signals and amplify except can being applied to the electrocardiosignal amplification.
Description of drawings
Fig. 1 is an integrated-type physiological signal sensor profile
Fig. 2 is universal integrated-type physiological signal sensor bioelectric amplifier circuit theory diagrams
Fig. 3 is special-purpose integrated-type physiological signal sensor bioelectric amplifier circuit theory diagrams
Fig. 4 is the photo-detector circuit schematic diagram
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples
Embodiment, integrated physiological signal sensor and tailored version physiological signal sensor
(1) biosensor type
1) silver/silver chloride electrode: adopt silver/silver chloride electrode can be used to gather following physiological signal as pick off.
A) EEG signals → being used for the brain electricity feeds back
B) the myoelectricity signal of telecommunication → being used for myoelectricity feeds back
C) the electrocardio signal of telecommunication → being used for electrocardio feeds back
D) the galvanic skin response signal → being used for the skin electricity feeds back
2) photoelectric sensor: adopt finger, the photoelectric sensor of ear-lobe can be gathered following bio signal
A) blood oxygen saturation
B) blood volume pulse wave
3) respiration pickup: comprise pressure respiration pickup and temperature respiration pickup.Can be used for testing frequency, amplitude and the respiratory waveform of breathing, the biofeedback that is used to breathe.
4) temperature sensor: be used to measure skin temperature, carry out the skin temperature biofeedback.
5) pressure transducer: timing blood pressure automatic recording module, can use blood pressure monitoring module in the monitor, be used for the biofeedback of blood pressure.
(2) technical specification of pick off
1) myoelectric sensor
Input impedance: 10G Ω
Input range: 0～200m V
RMS
Sensitivity:＜0.1mV
RMS
Bandwidth: 10Hz～1000Hz
Accuracy: ± 5%, ± 0.3V
RMS
2) brain electric transducer
Input impedance: 10G Ω
Input range: 0～200mV
RMS
Sensitivity:＜0.1m V
RMS
Bandwidth: 2HZ～1000HZ
GMRR：＞100dB
Accuracy: ± 5%, ± 0.3V
RMS
3) temperature sensor
Temperature-measuring range: 10 ℃～45 ℃ (50～115)
Accuracy: ± 1 ℃ (± 1.8 °F) are at (20 ℃～40 ℃) or (68 °F～104 °F)
4) photoelectricity volume sensor
Input range: 0%～100%
Accuracy: ± 5%
5) respiration pickup
Input range: 30%～65%
Accuracy: ± 5%
6) skin conductance pick off
Signal input range: 0～30MS
Accuracy: ± 5% and ± 0.2MS
Input direct voltage:＜10mA and＜3V (adopt 0.5V comparatively suitable)
(3) sensor configuration and application
1) myoelectric sensor can adopt disposable bikini electromyographic electrode (comprising positive pole, negative pole, the disposable electromyographic electrode of reference electrode), also can adopt circular electrode to be fixed on the nylon tape.
2) brain electric transducer
Adopt special-purpose metal plate-like (silver/silver chloride) electrode, adopt the nylon tape structure, electrode is fixed on the nylon tape.
Reference electrode adopts ear-lobe electrode, also can consider to adopt the disposable electrode for encephalograms of bikini.
3) EGC sensor adopts disposable electrocardioelectrode.
4) skin conductance rate pick off
Adopt metaldisk electrode to be fixed on the nylon tape, or adopt two finger cot types.
5) photoelectricity volume sensor
Adopt finger-type or ear-lobe formula.
6) temperature sensor
Employing can be fixed on finger and go up the nylon tape type.
7) respiration pickup
The adopts pressure sensor type, pectoral girdle formula or binder type.
(4) sensor interface and lead
Must be noted that the joint of pick off during application sensors, socket and lead.Must be supporting with the pick off preamplifier.
(5) sensor current supply
Skin conductance rate pick off is necessary＜and 0.5 volt,＜10 milliamperes of direct current power supplies.Power supply is supplied by the pick off preamplifier.The required electric current of other types pick off is by the main frame supply.
(6) design of general system proposal
According to requirement of system design, as necessary hardware, should guarantee realize on the basis of basic function, modularized design as far as possible, thus make module reuse, multiplexing, at utmost reduce system cost.
Whole system can be divided into lower module on function and structure:
1) electric pole type transducer module and connection lead thereof
As the essential ingredient of gathering physiological signal, be the prerequisite that the physiological signal acquisition quality guarantees, the needs according to different physiological signals is gathered must adopt different electrode sensors.Now be described below:
A) electrode for encephalograms
Adopt conventional silver/silver chloride circular electrode, lead directly is fixed on the electrode, and circular electrode has lead output.
B) electrocardioelectrode
Adopt conventional disposable electrocardioelectrode, adopt button-shaped electrode cap, electrode cap connects disposable electrode, and lead output is arranged on the electrode cap.
C) electromyographic electrode
● can directly use disposable use bikini electromyographic electrode, adopt electrode cap to connect electrode, lead output is arranged.
● also can consider to adopt the special-purpose electromyographic electrode of three strips, have lead directly to export.
D) skin conductance rate electrode
Adopt silver/silver chloride circular electrode (8mm), electrode has lead directly to export.
E) photoelectricity volume sphygmograph transducer
Adopt special photoelectricity volume pulsation transducing box, this transducer box side has two apertures, the inner circular aperture is the light-emitting diode pore, infrared light Light-Emitting Diode emission light, apertura lateralis is a transistor photo-detector aperture, the transistor photosensitive tube is accepted change in optical signal, and changes optical signal into the signal of telecommunication, exports behind the amplifying signal.The photodetector box adopts electrode amplifier box, refers to that at it veutro makes a call to two aperture device luminescent diodes and photaesthesia transistor and preamplifier, and all components and parts are contained on the circuit board, are fixed in the capsule.The power supply supply is by the button cell supply in the box.
Capsule has lead to connect, and directly carries signal to the electrode amplifier.
F) respiration pickup
Respiration pickup is a kind of pressure transducer, and pressure transducer has lead to be attached thereto, and breath signal is sent to the amplification of electrode amplifier.
G) temperature sensor
Temperature sensor is directly delivered to the electrode amplifier by lead with signal.
H) pressure transducer
Adopt the blood pressure module of monitor, the inflation and measure blood pressure directly is sent to A/D converter with signal automatically.
2) electrode sensor fixture module
When gathering various physiological signal, electrode sensor safety must be fixed on specified human body, make it and can not move, but too big pressure influence signals collecting can not be arranged, different electrode sensors has different fixtures and method, now is described below:
A) electrode for encephalograms
Electrode for encephalograms can install in elastic bandage.Elastic bandage can be fixed with velcro.Can be as required fixedly electrode for encephalograms in case of necessity, also can adopt elastic bandage that electrode for encephalograms is fixed on forehead in any cranium brain position.Brain electricity reference electrode is fixed on ear-lobe with the clamp type electrode usually.
B) electrocardioelectrode
Directly sticking on corresponding site with disposable electrode gets final product.
C) electromyographic electrode
● when adopting disposable electrode, can directly stick on corresponding site (usually at forearm, back).
● when adopting reusable electrode, can adopt the fixed mode of elastic bandage.When this fixed form only is suitable for arm or shank, if the adhesive tape fixed form is preferably adopted at other body parts in the test position.
D) skin conductance rate electrode
Skin conductance rate electrode is fixed on two fingers by two elastic bandages respectively, and lead directly exports the electrode amplifier to from the electrode connection.
E) photoelectricity volume pulse transducer
● finger-type photoelectricity volume pulse transducer is fixed on finger tips by elastic bandage.
● ear-lobe type photoelectricity volume pulse transducer adopts pincers class mode to be fixed on the ear-lobe position.
F) respiration pickup
Respiration pickup can be fixed on thoracic wall and stomach wall by elastic bandage.Elastic bandage length can be regulated by adjusting device.Respiration pickup directly has lead to export the electrode amplifier to.
G) temperature sensor
Temperature sensor fixed position and fixed form and skin conductance rate electrode are in full accord.Sometimes two pick offs can be fixed on a finger.
H) pressure transducer
Pressure transducer can be fixed on finger or wrist position by the oversleeve band.
The elastic bandage of above-mentioned various fixed electrode formula transducers can be made by oneself.According to different purposes, select the elastic bandage of different length.The elastic bandage end has velcro to fix.Elastic bandage can be any chemical ﹠ blended fabric, and it is good preferably to select with skin-friendliness, and soft comfortable, good hand touch has certain elastic fabric.Multiple modes such as electrode is fixed on elastic bandage can adopt any form fixed form, comprises stickup, sticking, fixing.
3) electrode amplifier module and output lead thereof, terminal
The electrode amplifier is that the physiological signal of gathering is carried out preposition amplification, to be fit to the form input a/d converter of A/D conversion, the electrode amplifier is directly wanted to be connected with lead with electrode sensor, the output signal of electrode amplifier is connected to data acquisition board from outfan through lead and the slotting son of wiring, carries out the A/D conversion.
The electrode amplifier can adopt universal amplifying circuit (see figure 2), and the electrocardioelectrode amplifier also can adopt the special-purpose amplifying circuit (see figure 3) of electrocardio.Electrode amplifier profile (see figure 1), by a flat plastic casing, in put large circuit board, and the input of front and back end lead, output are arranged.
Electrode amplifier cabinet can mould, injection molded.This shell also can be used as photoelectricity volume transducer enclosure (making a call to two holes at header board), or as the respiration pickup box.
The electrode amplifier output signal is a voltage, and output area is 0-5V.
4) usb interface module (being only applicable to intelligent integrated sensor)
Intelligent integrated sensor is directly to transmit signals to the PC USB interface, therefore, includes the A/D conversion, coding and USB interface special chip.This module only is suitable for Intelligence sensor
(7) integrated physiological signal sensor
1) integrated core signal sensor
By electrocardioelectrode, the electrode on line, the special-purpose amplifier of electrocardiosignal, electrocardiosignal output lead and Interface Terminal are formed.Can finish the single channel ecg signal acquiring, the function of preposition amplification.Can be widely used in multiple electrocardiogram signal acquisition device, monitor device, family health care device, device for remote medical treatment, electrocardio Holter, multichannel ecg analysis device, in the electrocardio-monitor, especially in popular style, the economical health care device of domestic has great market potential in using.
2) integrated EEG signals pick off
By electrode for encephalograms, the electrode on line, the special-purpose amplifier of EEG signals is formed.Can finish the single channel eeg signal acquisition, the function of preposition amplification.Can be widely used in the monitoring of brain electricity, biofeedback, epilepsy diagnosis, physiology monitoring, anesthesia monitoring, Physiological Analysis, plurality of devices such as computer game.
3) integrated electromyographic signal pick off
By electromyographic electrode, the electrode on line, the special-purpose amplifier of electromyographic signal is formed.Can finish the single channel electromyographic signal collection, the function of preposition amplification.Can be widely used in biofeedback, motion monitoring, computer game, body-building equipment, naturopathy, plurality of devices such as rehabilitation.
4) integrated skin conductance rate pick off
By skin conductance rate electrode, the electrode on line, output of electrode DC voltage and amplifier are formed.Can be widely used in biofeedback, stress management, biological monitoring, ultrasonic energy test, a plurality of fields such as body energy test.
5) integrated photoelectricity positive displacement pulse transducer
By light electric transducer (Light-Emitting Diode, or infrared light emission diode and photosensitive tube composition), amplifier and lead are formed.Can be placed on finger tip, ear-lobe, forehead test pulse wave signal.Can be widely used in biofeedback, computer game, stress management, relaxation training, physiology monitoring, plurality of devices such as motion monitoring.
6) integrated temperature sensor
By temperature sensor, amplifying circuit and lead are formed.Can gather, amplify single channel body surface temperature signal.Can be widely used in the physiology monitoring, biofeedback, equipment such as computer game.
7) integrated form respiration pickup
A) pressure-type: by pressure transducer, amplifier, and lead is formed.Can gather, amplify the frequency of breathing and breathing, the amplitude cycle.
B) temperature sensor+amplifier
Can be widely used in biofeedback, biological monitoring, equipment such as computer game.
(8) intelligent type physiological signal sensor
1) brain electricity, electrocardio, the integrated physiological signal sensor of myoelectricity (Fig. 6)
A) electrode: electrode can adopt silver/silver chloride or shape electrode (the most normal employing of brain electricity) or disposable electrode (the most normal employing of electrocardio), band medicated cap shape interface, or bikini electrode (the most normal employing of myoelectricity), band medicated cap shape interface.Can determine respectively according to different application.
B) electrode cap shape interface connecting conducting wire.Electrode cap shape interface is used to connect lead signal is exported.
C) electrode amplifier box.Electrode amplifier box is by the shell input lead, amplifier circuit board, and output lead is formed.The electrode amplifier housing is by unskilled labor engineering plastics or plastic material preparation, flat, rectangle, the sealing shape only has three lead inputs (three electrode connecting conducting wires) at header board, at the back plate output lead output is arranged, the output lead end has Interface Terminal, can directly be connected in DAQ and pull.The circuit design of electrode amplifier can adopt the biological amplifying circuit of universal high-performance, also can adopt special-purpose amplifying circuit, can adopt the special-purpose amplifying circuit of electrocardiosignal as electrocardiosignal.
D) output lead and Interface Terminal.Output lead connects the signal output part of amplifier, by output lead outlet terminal, be attached directly to the A/D converter input port that DAQ pulls, also can directly connect other physiology signal acquisition devices and (for example add the transducer input, mobile model physiology signal acquisition device or handheld biofeedback training device), the model of output lead length and lead-out terminal depends on the size and the model of input equipment input port.
2) intelligent skin conductance rate pick off
The electrode that intelligent skin conductance rate pick off adopts is silver/silver chloride electrode+circular electrode.Be fixed on two finger tips with elastic bandage, its input lead, the electrode amplifier, output lead and terminal and brain electricity, electrocardio, myoelectricity integrated-type skin conductance rate pick off is in full accord.
Most important difference is that integrated-type skin conductance rate pick off must have lasting straight line voltage to export two electrodes to, and output voltage is 0.5 volt, output current＜10mA.Therefore should increase the output of straight line voltage in input electric wire interface end when design high-performance biological amplifier, all the other are identical, and biological amplifying circuit can adopt the biological amplifying circuit of universal high-performance.
Two silver/silver chloride pick offs are circular electrode, are fixed on elastic bandage central authorities.The about 8mm of each circular electrode continues to provide weak voltage on two electrodes, voltage is 0.5V (maximum can not surpass 3V), output current＜10mA, and measurement unit is conductivity (Micromhos) output area 0.5-50micromhos.
3) intelligent photoelectricity pulse transducer
Light-Emitting Diode (680wm wavelength) or far infrared Light-Emitting Diode that integrated-type photoelectricity pulse transducer adopts,
As transmitting illuminant, utilize the photaesthesia transistor npn npn as photo-detector, the light of induction reflection, according to beating of blood volume, and the pulse wave that forms, after custom-designed amplifier amplifies, input a/d converter.
Composition comprises, Light-Emitting Diode, and the optical detection triode connects the transistorized pre-amplification circuit of optical detection, photodetector box, the elastic bandage of fixed light electric explorer, output lead and terminal.Be fixed on the photodetector of finger, be the finger-type photodetector, ear-lobe type photodetector is fixed on people's ear-lobe, and photodetector is fixed on ear-lobe for the pincers type.
Photodetector amplifier circuit schematic diagram is seen Figure 10, adopts the New O PA380 of TIX (TI) to amplify chip, carries out preposition amplification, and amplifying signal inputs to A/D converter (DAQ pulls) after entering the further processing of electrode amplifier.
4) intelligent respiration pickup
The integrated-type respiration pickup is that pressure transducer is fixed on the elastic bandage, and test is fixed on thoracic wall and stomach wall when breathing, the expansion and the contraction of thoracic wall and stomach wall during along with breathing, the waveform during recording respiration, frequency and amplitude.By pressure transducer, elastic bandage, sensor amplifier and connecting conducting wire thereof are formed.
5) integrated-type body temperature trans
The integrated-type body temperature trans is by the body temperature joint, body temperature trans, and sensor amplifier, compositions such as connecting conducting wire are placed on finger, are used to measure human body tip body temperature.Frequent and skin conductance rate pick off is seated in same finger.
In test, body temperature trans is transformed into the signal of telecommunication with body temperature, transfers to after sensor amplifier amplifies, and changes to A/D converter.
6) Intelligence sensor system
After the common configuration of multiple integrated-type pick off, can form different system very easily, to be fit to the needs of different clinical and research work.Multiple integrated-type pick off can dispose a data acquisition module jointly.In data acquisition module, various physiological signals carry out mould/number conversion, and will directly import computer through special interface circuit (USB, or RS232c, or pci card) behind the signal coding.
The integrated-type sensing system also can directly be imported other external devices with acquired signal, for example, is mobile model device of core processing module etc. with the single-chip microcomputer.
Claims (7)
1. the present invention relates to be applied to the physiological signal sensor and the conditioning device of physiological signal collection and conditioning, relate in particular to a kind of collection physiological signal collection and signal and amplify incorporate integrated, the intelligent type physiological signal sensor of conditioning.This modular construction integrated, that intelligent type physiological signal sensor can be used as an integration directly is connected with the DAQ plate and is widely used in multiple medical instruments and equipment, in the health-oriented products.
2. according to the described device of claim 1, it is characterized in that, the integrated physiological signal sensor of design design, the collection of collection physiological signal and amplify conditioning and be one is gathered bioelectrical signals through electrode or transducer, or through transducer with human body non-electrical signal (temperature, pressure) change the signal of telecommunication into after, adopt high cmrr, the high-performance bioelectric amplifier is exported after amplifying conditioned signal, and the signal of output can directly carry out A/D converter and enter mould/number conversion.Signal output is voltage signal, and output area meets the requirement of most A/D converter inputs at 0-5V.Integrated physiological signal sensor is by electrode or transducer, constitute in conjunction with the high-performance biological amplifier, the signal of telecommunication gathered by electrode or transducer or the conversion non-electrical signal is to import the high-performance bioelectric amplifier by lead behind the signal of telecommunication, and the signal after amplifier amplifies is exported by lead.
3. according to the described device of claim 1, it is characterized in that the physiological signal type according to different can design different, tailored version or universal physiological signal integrated transducer, these integrated transducers include but not limited to integrated electromyographic signal pick off, integrated core signal sensor, integrated EEG signals pick off, integrated skin conductance rate pick off, integrated photoelectricity positive displacement pulse transducer, integrated temperature sensor, integrated respiration pickup.
4. according to the described device of claim 1, it is characterized in that, the design intelligent type physiological signal sensor also can satisfy purpose of the present invention, method is with above-mentioned various integrated physiological signal sensors separately or several combinations as required, application sets molding microprocessor microcontroller carries out mould/number conversion simultaneously, signal condition, and the coding back directly is connected with PC with the form of USB interface, directly signal is conveyed into PC, further handles.Add signals collecting by this intelligent type physiological signal sensor, transmission shows, analyzes special purpose computer software, can make any PC become the collection of collection physiological signal, and the powerful tool into one is analyzed in monitoring.Intelligent type physiological signal sensor includes but not limited to, brain electricity, electrocardio, myoelectricity intelligent type physiological signal sensor, intelligent skin conductance rate pick off, intelligent photoelectricity pulse transducer, intelligent respiration pickup, intelligent body temperature trans, Intelligence sensor system etc.
5. according to the described device of claim 1, it is characterized in that, in integrated physiological signal sensor, according to the purposes difference, the bioelectrical signals amplifier can adopt universal electrode amplifier and tailored version physiological signal preamplifier to carry out the amplification and the conditioning of physiological signal.
6. according in the described device of claim 1, universal electrode amplifier characteristics is:
● electrode directly is connected with pick off, and the preposition amplification of physiological signal is provided.
● the single channel amplifying circuit, each electrode amplifier only amplifies one road signal.
● what the electrode amplifier was exported is voltage signal, output area 0-5V.
● the signal of electrode amplifier output is directly imported the input port of data acquisition board.
● the power supply of electrode amplifier is supplied as 5V, derives from data acquisition board.
7. according in the described device of claim 1, tailored version physiological signal preamplifier feature is that tailored version physiological signal preamplifier structure is mainly used in multiple tracks ecg signal acquiring, cardiac monitoring, be particularly suitable for the amplification and the conditioning of electrocardiosignal, but also can be used for other physiological signals.This amplifier is mainly used in and amplifies the electrocardiosignal of 0.05Hz to 100Hz.The characteristics of circuit design are to strengthen common mode rejection ratio, and the common frequency of filtering 50Hz disturbs, filtering owing to move between human body and electrode produce the unidirectional current of 300mv.This circuit adopts the power supply supply of 5V, adopts 4 joint AA rechargeable battery powered equally.A in the circuit diagram
1Operational amplifier can be deleted, and depends on the size of resistance.Outfan connects TMS320DSP after connecting ADS8321 in the circuit diagram.When used on this road, outfan was directly connected to output port, and the signal after will amplifying by terminal and lead is directly delivered to DAQ and pulled output voltage 0-5V scope.Amplifier also can be used for other physiological signals and amplify except can being applied to the electrocardiosignal amplification.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857326A (en) * | 2011-06-10 | 2014-06-11 | 纯净之心有限公司 | Blood withdrawal cannula of a pump replacing or assisting activity of the heart |
| CN105686825A (en) * | 2016-03-07 | 2016-06-22 | 浙江大学 | Double-stage wearable household electrocardiocorder and method thereof |
| CN106805948A (en) * | 2017-03-10 | 2017-06-09 | 安徽通灵仿生科技有限公司 | A kind of children use finger cot type remote diagnosis system |
| CN107334463A (en) * | 2016-10-29 | 2017-11-10 | 横琴智库转化医学有限公司 | A kind of signal pickup assembly |
| CN109993093A (en) * | 2019-03-25 | 2019-07-09 | 山东大学 | Road anger monitoring method, system, equipment and medium based on face and respiratory characteristic |
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2005
- 2005-07-21 CN CNA2005100279947A patent/CN1768701A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857326A (en) * | 2011-06-10 | 2014-06-11 | 纯净之心有限公司 | Blood withdrawal cannula of a pump replacing or assisting activity of the heart |
| CN103857326B (en) * | 2011-06-10 | 2015-12-02 | 纯净之心有限公司 | The blood collection trocar of the pump of compensation or support cardiac function |
| CN105686825A (en) * | 2016-03-07 | 2016-06-22 | 浙江大学 | Double-stage wearable household electrocardiocorder and method thereof |
| CN107334463A (en) * | 2016-10-29 | 2017-11-10 | 横琴智库转化医学有限公司 | A kind of signal pickup assembly |
| CN107334463B (en) * | 2016-10-29 | 2019-03-12 | 横琴智库转化医学有限公司 | A kind of signal pickup assembly |
| CN106805948A (en) * | 2017-03-10 | 2017-06-09 | 安徽通灵仿生科技有限公司 | A kind of children use finger cot type remote diagnosis system |
| CN109993093A (en) * | 2019-03-25 | 2019-07-09 | 山东大学 | Road anger monitoring method, system, equipment and medium based on face and respiratory characteristic |
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