CN1425354A - Portable dynamic full information electrocardiogram and heart sounds monitor - Google Patents
Portable dynamic full information electrocardiogram and heart sounds monitor Download PDFInfo
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- CN1425354A CN1425354A CN 02156421 CN02156421A CN1425354A CN 1425354 A CN1425354 A CN 1425354A CN 02156421 CN02156421 CN 02156421 CN 02156421 A CN02156421 A CN 02156421A CN 1425354 A CN1425354 A CN 1425354A
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Abstract
The portable dynamic full information electrocardiogran and heart sound monitor has piezoelectric film sensor as heat sound signal collector and electrocardiac electrodes as electrocardiac signal collector. The heart sound signal collector is used to collect the heart sound signals in three positions of body chest to form three ehart sound signal collecting channels. The electrocardiac signal collector is used to collec tthe electrocardiac signals in five positions of body chest to form five electrocardiac collecting channels. The heart sound signals and the electrocardiac signals are amplified in an amplifier and A/D converter and calculated in a monochip computer, the obtained data are stored in a flash memory and transferred to external terminal via USB interface.
Description
Technical field
The present invention relates to a kind of portable dynamic perfect information electrocardio hear sounds comprehensive monitor.
Background technology
Dynamic cardiograph is the instrument of monitoring human electrocardiosignal dynamically, it is noted the electrocardiosignal of human body with the portable minisize monitor, utilize terminal playback system output ecg wave form and data, it is mainly used in the qualitative and quantitative analyzing and diagnosing of arrhythmia and myocardial ischemia, can also be applied to the Differential Diagnosis of fuzzy symptoms such as cardiopalmus, chest pain, dyspnea, dizziness, faintness, the therapeutic evaluation of cardiovascular drugs.Phonocardiogram be the fleeting acoustical signal with cardiac auscultation become can long preservation, the figure and the data of analysis.Phonocardiogram can effectively remedy the deficiency of cardiac auscultation, and signal that cardiac auscultation can not be write down or the signal that is not easy to differentiate are noted with the form of figure, analyze use for the doctor.Phonocardiogram can improve the discriminating and the diagnostic level of cardiovascular disease greatly in conjunction with electrocardiogram, for understanding cardiovascular function, selects treatment, and the mechanism of judging pathology and studying some disease all provides of great value data, uses increasingly extensive.
The ambulatory electrocardiogram that with the tape is recording medium is progressively eliminated because volume and power are all very big.At present external dynamic cardiograph adopts flash card as storage medium more, and volume is little, and the record amount is big, and the holding time is long, but as the ECLIPSE PLUS type 12 lead memory-type electrocardiograph of U.S. BURDICK company production.The electrocardiophonograph of domestic production, as above the TJY-6 fetal heart sound monitor of Asterias amurensis Lutken space Electronic Instruments Plant production utilizes Doppler effect to make probe mostly, the subsequent conditioning circuit complexity, power consumption is big, and volume is big.And the electrocardiophonograph of having developed at present is generally two different instruments separately with electrocardiograph, and each finishes hear sounds or cardiac electrical monitoring separately, and the two effectively combination realizes the hear sounds and the electrocardiosignal of same machine synchronous monitoring human body.
Summary of the invention
The purpose of this invention is to provide a kind of portable dynamic perfect information electrocardio hear sounds monitor.
The present invention utilizes piezoelectric film sensor as heart sound signal collector, and electrocardioelectrode is as the ecg signal acquiring device; Piezoelectric film sensor is gathered the cardiechema signals of three diverse locations of human chest, forms three hear sounds acquisition channels; Electrocardioelectrode is gathered the electrocardiosignal of five diverse locations of human chest, forms five electrocardiogram acquisition passages; Hear sounds, two groups of signals of electrocardio are imported single-chip microcomputer respectively, and outer end of the present invention interface has eight passages.The present invention can calculate chest by single-chip microcomputer and simulate four passages that two passages of Wilson network calculate extremity with the single-chip microcomputer of technical grade, forms nine electrocardiac channels altogether; Two passages of simulation Wilson network are the 7th passage and the 8th passage; The single-chip microcomputer of a slice technical grade is realized the collection and the control of data fully; Single-chip microcomputer and flash card are set at the operating on low voltage state, reduce power consumption; The voltage of analog computing amplifier is set at low pressure, to reduce power consumption; Adopt four flash cards to realize jumbo storage; The realization of employing USB interface is connected with PC or printer, to external terminal Data transmission; The numerical portion and the simulation part branch of entire circuit are designed to two circuit boards, increase the anti-jamming capacity of circuit; Two overlapping placements of circuit board, reduced volume, miniaturization is realized in the scientific utilization space.
This monitor be a kind of can 24 hours perfect information monitoring electrocardio, and full recording, microminiature, low-power consumption, high performance comprehensive monitor that when needed can the synchronous monitoring hear sounds.
Description of drawings
Fig. 1 is portable dynamic perfect information electrocardio hear sounds monitor circuit theory diagrams.
Fig. 2 is the first passage of circuit diagram of portable dynamic perfect information electrocardio hear sounds monitor and the analog amplify circuit part of second channel.
Fig. 3 is the digital circuit part of the circuit diagram of portable dynamic perfect information electrocardio hear sounds monitor.
The specific embodiment
Embodiment of the present invention are described below in conjunction with the accompanying drawings:
Fig. 1 is portable dynamic perfect information electrocardio hear sounds monitor circuit theory diagrams.Piezoelectric film sensor 1 is gathered the cardiechema signals and the electrocardioelectrode 2 of three passages and is gathered five passage electrocardiosignaies; Above-mentioned signal is all by external-connected port 3, and electrocardiosignal is sent into impedance inverter circuit 4 and finished the impedance conversion and amplify useful electrocardiosignal then; Electrocardiosignal after the amplification is sent into in-phase amplification circuit 7 filter the interference of high frequency through low-pass filter circuit 5 after; Cardiechema signals is sent into in-phase amplification circuit 7 after capacitance 6 couplings; In-phase amplification circuit 7 is amplified to the hear sounds electrocardiosignal amplitude that is fit to the A/D conversion; 8 pairs of electrocardios of single-chip microcomputer and cardiechema signals carry out the A/D conversion, and calculate the electrocardiogram (ECG) data of four passages in addition, and the data after will handling simultaneously deposit flash card 9 in; Usb 10 reads data from flash card 9 and exports to PC or printer 12 by external-connected port 3 by accepting the instruction of single-chip microcomputer 8; 13 pairs of entire circuit power supplies of two No.5 cells, sustainable use 30 hours; DC/DC changer 11 changes the output voltage stabilization of two No.5 cells at 3.3V, offers single-chip microcomputer 8, flash card 9, usb 10, impedance inverter circuit 4 and in-phase amplification circuit 7.
Fig. 2 is the analog amplify circuit figure of portable dynamic perfect information electrocardio hear sounds monitor circuit diagram first passage and second channel.The electrocardiosignal of first passage is carried out the impedance conversion earlier, and U31C, R0, R2, R3, R4, C1 form impedance inverter circuit; R0, R2 and R4 are current-limiting resistance; R3 is negative feedback, is used for control change device output impedance value; C1 is a capacitance; After the process impedance inverter circuit was carried out impedance conversion and amplification, signal was sent into the next stage low-pass filter circuit and is carried out filtering, filters the High-frequency Interference part, and R5, C2 and C3 form low-pass filter circuit; Filtered electrocardiosignal is sent into in-phase amplification circuit and is amplified, and U7, R7 are in-phase amplification circuit, and amplification is by resistance R 7 controls; R6 is a boost resistor, the input running voltage of control in-phase amplification circuit; C4, C5 are capacitance; R8 is a current-limiting resistance; VDD is a voltage-to-ground, and its value is 1.5V; Be amplified to the scope of suitable A/D conversion through in-phase amplification circuit after, the PF0 interface that electrocardiogram (ECG) data is sent into single-chip microcomputer carries out the A/D conversion; U31C and U7 are integrated operational amplifier, and the U31C model is MAX4044, and the U7 model is AD620, and running voltage is 3.3V; The 3rd is identical with the structure of first passage with the five-way road, is made up of impedance inverter circuit, low-pass filter circuit and in-phase amplification circuit.The 7th passage has left limb, right limb two passages, equally with first passage is made of left limb, the shared in-phase amplification circuit of right limb two passages impedance inverter circuit, low-pass filter circuit and in-phase amplification circuit; The same first passage of the 8th channel design is made up of impedance inverter circuit, low-pass filter circuit and in-phase amplification circuit; The 7th passage and the 8th passage constitute mimic Wilson network; Three, five, seven and eight passage electrocardiosignaies PF2, the PF4, PF6, the PF7 port that enter single-chip microcomputer after processing and amplifying carries out the A/D conversion.
Second channel is the hear sounds passage, is the both-end input, and cardiechema signals passes through every straight coupling earlier, and C6 and C7 are the capacitance of two inputs of second channel; Send into in-phase amplification circuit through the hear sounds after straight coupling and amplify, R10, U8 constitute in-phase amplification circuit, and amplification is controlled by R10; R9 and R11 are boost resistor, the input running voltage of control in-phase amplification circuit; C8 is a capacitance; R12 is a current-limiting resistance; VDD is a voltage-to-ground, and its value is 1.5V; After the cardiechema signals of second channel was amplified to the scope that is fit to the A/D conversion through in-phase amplification circuit, the PF1 interface of sending into single-chip microcomputer carried out the A/D conversion, and the U8 model is A/D620.Hear sounds has three passages, is two, four, the clematis stem road.Four, the structure of the structure of the simulation amplifier section in clematis stem road and second channel is identical.Four, clematis stem road cardiechema signals carries out the A/D conversion through PF3, the PF5 port that is amplified into single-chip microcomputer.
Fig. 3 is the digital circuit part of the circuit diagram of portable dynamic perfect information electrocardio hear sounds monitor.The PF* port that hear sounds after the process analog amplify circuit amplifies and electrocardiosignal are sent into single-chip microcomputer carries out the A/D conversion, and wherein PF* is PF0, PF1, PF2, PF3, PF4, PF5, PF6, PF7.The PC* interface of single-chip microcomputer links to each other with the chip select line CE of U2, U3, U4, four flash cards of U5, and wherein PC* is PC4, PC5, PC6, PC7; The PA* interface of single-chip microcomputer and the D* of USB interface link to each other, and wherein PA* is PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7, and D* is D0, D1, D2, D3, D4, D5, D6, D7; The PD4 of single-chip microcomputer, PD5, PD6, PD7 link to each other with S/B, CLE, ALE, the WP of four flash cards respectively, the duty of four flash cards of control; The PD3 of single-chip microcomputer links to each other with the DC/DC changer; AVCC, AREF link to each other with the DC/DC changer, constitute the benchmark comparative voltage of single-chip microcomputer jointly.XTAL2, XTAL3 link to each other with C52 with C42, C25, and brilliant shake signal is provided.Single-chip microcomputer U1 model is AT90SMEG103, and running voltage is 3.3V, full static work in the 0-12MHz scope.
U2, U3, U4 and U5 are four flash cards, and its each VCC is connected with the DC/DC changer with VSS, provides the low-voltage of 3.3V by the DC/DC changer for them, and it is in order to reduce power consumption as best one can that voltage is chosen 3.3V; Each I/O* of U2, U3, U4 and U5 and the D* of USB interface are connected, and to USB interface transmission data, wherein I/O* is I/O0, I/O1, I/O2, I/O3, I/O4, I/O5, I/O6, I/O7, and D* is D0, D1, D2, D3, D4, D5, D6, D7; Also link to each other with the PA* of single-chip microcomputer simultaneously, to the data of single-chip microcomputer transmission process, wherein PA* is PA0, PA1, PA2, PA3, PA4, PA5, PA6, PA7.The model of U2, U3, U4 and U5 is KM29U128T.
U18 is a USB interface, and it realizes that its read gate WR-N links to each other with WE, the RE of four flash cards with write gate RD-N outside control and the transmission, the read-write of control flash card except being connected with single-chip microcomputer; GL-N is connected with light emitting diode; XTAL1, XTAL2 link to each other with C43, C23, C51, and brilliant shake signal is provided.U17A is the DC/DC changer, and LA, BATT and SHDN connect the both positive and negative polarity of battery respectively, and OUT, PFD are the output port of U17A, and R12, C16, C54 play Stabilization to output voltage.
The present invention can provide the hear sounds of three passages and the electrocardiogram (ECG) data of nine passages, obtains 24 hours perfect information electrocardiogram (ECG) datas, and synchronization gain heart sound data when needed; Good reliability adopts up-to-date IC chip technology, and analog amplify circuit adopts low-power consumption, the operational amplifier of low distortion; The chip microcontroller of a slice technical grade all digital processing and control circuits; Memory data output is big, adopts the flash card of four 17M bytes, but 24 hours electrocardio heart sound data of the storage of perfect information; Low in energy consumption, select the integrated device of low-power consumption for use, be operated in low-pressure state, electric current is less than 20mA, and two joint No.5 cells can use more than 30 hours; Volume is little, has only 9.6 * 6 * 2.5 (cm), and weight has only 82 grams, conveniently carries; Easy to use, adopt the USB interface technology, can make things convenient for the random connection PC and the printer of various models.
Claims (8)
1, a kind of portable dynamic perfect information electrocardio hear sounds monitor, the hear sounds and the electrocardiosignal of cardiechema signals and the collection of ecg signal acquiring device enter analog amplify circuit by the outer end interface, machine carries out the A/D conversion and calculates as calculated, its data deposit in the flash card, and by the computer instruction USB interface to external terminal Data transmission.
2, monitor as claimed in claim 1 is characterized in that, described heart sound signal collector is a piezoelectric film sensor; Described ecg signal acquiring device is an electrocardioelectrode.
3, monitor as claimed in claim 1 or 2 is characterized in that, described heart sound signal collector is gathered the cardiechema signals of three diverse locations of human chest, forms three hear sounds acquisition channels; Described ecg signal acquiring device is gathered the electrocardiosignal of five diverse locations of human chest, forms five electrocardiogram acquisition passages.
4, monitor as claimed in claim 1 is characterized in that, described outer end interface is eight passages, and wherein the cardiechema signals passage is three, is second, four, the clematis stem road; Five in electrocardiosignal passage is first and third, five, seven, eight passages.
5. monitor as claimed in claim 1 is characterized in that calculating chest by single-chip microcomputer simulates four passages that two passages of Wilson network calculate extremity, forms nine electrocardiac channels altogether.
6, monitor as claimed in claim 1 is characterized in that, described cardiechema signals is through entering in-phase amplification circuit after straight coupling; Described electrocardiosignal enters in-phase amplification circuit behind impedance inverter circuit and low-pass filter circuit.
7, monitor as claimed in claim 1 is characterized in that, the data after single-chip microcomputer is handled transmit to external terminal by USB interface.
8, monitor as claimed in claim 1 is characterized in that, described external terminal is display or printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156421 CN1237934C (en) | 2002-12-16 | 2002-12-16 | Portable dynamic full information electrocardiogram and heart sounds monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156421 CN1237934C (en) | 2002-12-16 | 2002-12-16 | Portable dynamic full information electrocardiogram and heart sounds monitor |
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| Publication Number | Publication Date |
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| CN1425354A true CN1425354A (en) | 2003-06-25 |
| CN1237934C CN1237934C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02156421 Expired - Fee Related CN1237934C (en) | 2002-12-16 | 2002-12-16 | Portable dynamic full information electrocardiogram and heart sounds monitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102370496A (en) * | 2011-09-09 | 2012-03-14 | 北京大学深圳研究生院 | Fetal heart sound monitoring instrument based on piezoelectric thin-film sensor |
| WO2012145936A1 (en) * | 2011-04-27 | 2012-11-01 | 深圳市迈迪加科技发展有限公司 | Heart function piezoelectric sensor |
| CN102920472A (en) * | 2012-12-05 | 2013-02-13 | 骆彦琳 | Portable heart sound collecting device and method |
| CN103479429A (en) * | 2013-08-29 | 2014-01-01 | 无锡慧思顿科技有限公司 | Heart comprehensive detection equipment based on heart sounds and electrocardiograms |
| CN104545837A (en) * | 2013-10-18 | 2015-04-29 | 北京大学深圳研究生院 | Heart function sensor |
| CN106606359A (en) * | 2015-10-27 | 2017-05-03 | 中国航天员科研训练中心 | Wearable electro-cardio signal collection device based on fabric electrode |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI563981B (en) * | 2014-11-28 | 2017-01-01 | 達楷生醫科技股份有限公司 | Stethoscope device with prompting function |
-
2002
- 2002-12-16 CN CN 02156421 patent/CN1237934C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145936A1 (en) * | 2011-04-27 | 2012-11-01 | 深圳市迈迪加科技发展有限公司 | Heart function piezoelectric sensor |
| CN102370496A (en) * | 2011-09-09 | 2012-03-14 | 北京大学深圳研究生院 | Fetal heart sound monitoring instrument based on piezoelectric thin-film sensor |
| CN102920472A (en) * | 2012-12-05 | 2013-02-13 | 骆彦琳 | Portable heart sound collecting device and method |
| CN103479429A (en) * | 2013-08-29 | 2014-01-01 | 无锡慧思顿科技有限公司 | Heart comprehensive detection equipment based on heart sounds and electrocardiograms |
| CN103479429B (en) * | 2013-08-29 | 2015-09-30 | 无锡慧思顿科技有限公司 | A kind of based on hear sounds and cardiac electrical heart overall checkout equipment |
| CN104545837A (en) * | 2013-10-18 | 2015-04-29 | 北京大学深圳研究生院 | Heart function sensor |
| CN106606359A (en) * | 2015-10-27 | 2017-05-03 | 中国航天员科研训练中心 | Wearable electro-cardio signal collection device based on fabric electrode |
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| Publication number | Publication date |
|---|---|
| CN1237934C (en) | 2006-01-25 |
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