CN2436099Y - Cardioelectric detecting, monitoring remote transmitter - Google Patents

Cardioelectric detecting, monitoring remote transmitter Download PDF

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Publication number
CN2436099Y
CN2436099Y CN 00244156 CN00244156U CN2436099Y CN 2436099 Y CN2436099 Y CN 2436099Y CN 00244156 CN00244156 CN 00244156 CN 00244156 U CN00244156 U CN 00244156U CN 2436099 Y CN2436099 Y CN 2436099Y
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resistance
circuit
capacitor
microcomputer
input
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CN 00244156
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安刚
王世伸
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Abstract

The utility model relates to an improvement of a transmission device of ECG detection and monitoring. The utility model comprises an emission part and a receiver; an ECG emitter is provided for a patient, and the receiver is provided for a monitoring control center of a hospital. The patient puts body surface electrodes are respectively positioned on corresponding places of the hands, feet and the chest, and electrocardiosignals obtained from the body surface electrodes are input to a buffer amplifier by lead wires, modulated by parallelly connected chopped waves, and transmitted to a demodulation circuit of the receiver by the network of a telephone. The input end of an audio input transformer of the receiver is connected with the telephone, the electrocardiosignals which are transmitted from a remote ECG emission end are demodulated and input into a microcomputer so as to be displayed on a monitor of the microcomputer, and ECG real-time waveforms of the patient are observed so as to conduct diagnosis and monitoring and work out an effective treatment scheme.

Description

Electrocardio is picked up survey, monitoring remote transmission device
This utility model relates to the improvement that a kind of electrocardio is detected, guards transmitting device.
Electrocardiograph has been applied to since the clinical medicine at present, by detection, the monitoring to human body, has greatly promoted the development of heart disease subject, has become hospital's conventional Medical Instruments indispensable to the cardiac.Along with the development of clinical practice and technology, its guardianship content and instrument have had further development, electrocardio coronary heart disease ward continuous detecting (CCU) occurred, electrocardio phone (HOLTEL), ECG work station etc.But great majority detect and guard the large hospital that also is confined in the city, and expense is relatively more expensive, and the rural patient away from the city is difficult in time obtain to detect, guard.
The purpose of this utility model is to provide a kind of electrocardio to detect, guard the remote transmission device, hold transmitter for ECG by the patient, when needs detect or guard, by telephone network electrocardiosignal is transferred to monitoring control centre of hospital, control centre with the electrocardiosignal demodulation after and import in the microcomputer, can on microcomputer monitor, observe patient's electrocardio real-time waveform, detect or guard.
Be to realize like this with example this utility model in conjunction with the accompanying drawings.Fig. 1 is that electrocardio detects, monitoring remote transmission device includes the two-part block diagram of the machine of transmitting and receiving.
Fig. 2 has specifically provided transmitter for ECG input circuit figure.Each delivers to the input of transmitter with the line that leads by external electrode, left hand (L), the right hand (R), left foot (F), right crus of diaphragm (ground wire) and chest (V), resistance R 1-R 4And capacitor C 1-C 4Form No. four filter circuits, high-frequency signal is disturbed stronger attenuation.Buffer amplifier is by IC 1-IC 4Emitter follower is formed, and voltage gain is approximately 1.
The inferior network of Weir is by R 11-R 19The balancing resistance networks formed of totally 9 resistance, the group of networks triangularity, its three summits by buffer amplifier respectively with left hand (L), the right hand (R), left foot (F) joins, and the center on each limit of triangle is the corresponding reference point of augmented limb lead, and star-like mid point is the inferior network center of a Weir end.
Lead selector adopts 11 ingot buttons of two cuttves S 1, the conversion of carry out 0 successively, I, II, III, avr, avl, avf, V being led, the conversion by the switch that leads is with the synthetic a kind of mode of leading of human limb electrode switch groups.Chest lead V 1-V 6Lead and switch determining positions by chest crosslinking electrode.
The shielding drive circuit is by IC 5, resistance R 4, R 5, capacitor C 5C 6And inductance L 1Form.
Fig. 3 has specifically provided the transmitter for ECG amplification circuit diagram.Preamplifier is by IC 6, resistance R 20, R 21, R 22, R 23And capacitor C 7Form.IC 6Be difference amplifier, gain 20 times.IC 7, resistance R 28, R 29Form homophase input reversed feedback amplifier, gain is 4 times.
Exclusive circuit is by switch S 2Ground connection is formed, switch S 2After the closure, can make baseline get back to initial position immediately.
Time constant is by capacitor C 8, resistance R 25, R 26, R 27Form, its time constant is 3.3S.
Middle amplifying circuit is by IC 8, resistance R 34, R 32, R 31, R 33, potentiometer R 35Form reversed feedback amplifier, under normal circumstances, regulate R 35Should make the 1mV mark press signal is 1V.
Myoelectricity filtering is by resistance R 30, capacitor C 9Form myoelectricity interference filter circuit, suppress that the 35HZ myoelectricity disturbs and its decay 3DB.
The 50HZ ac filter circuit is by IC 9, IC 10, resistance R 37, R 38, R 39, R 40, R 41, R 42, capacitor C 10, C 11, C 12The ac filter circuit of forming active wave invigorating network suppresses 50HZ and exchanges interference and it is decayed to 1/8th of former amplitude.
Fig. 4 has specifically provided transmitter for ECG modification output circuit figure.The constant-amplitude carrier signal oscillation circuit is by IC 12, resistance R 45, R 46, R 47, R 48, capacitor C 14The frequency of forming is the constant amplitude square generator of 2KHZ.
Chopping modulation is by audion Q 1, Q 2, diode D 1, D 2, resistance R 50, R 51, R 52, R 43, R 44, capacitor C 13(see figure 2), audio frequency input tranformer T 1Form.The constant-amplitude carrier signal of 2KHZ is through capacitor C 15, resistance R 50Be added to audion Q 1Base stage.Audio frequency input tranformer T 1Through resistance R 43, R 44Directly be added in audion Q 1Colelctor electrode and audion Q 2Base stage on.
Power amplifier is by audion Q 3, Q 4, resistance R 53, R 54, R 55, audio frequency input tranformer T 2Form.
It is battery-powered to isolate the remote ecg transmitting end device.
Fig. 5 has specifically provided electrocardio receiver demodulator circuit figure.Diode " detection " demodulator is by audio frequency input tranformer T 3, diode D 3, D 4, capacitor C 16, C 17, resistance R 56, R 57Form.
The 50HZ ac filter circuit is by IC 13, IC 14, resistance R 58, R 59, R 60, R 61, R 62, R 63, capacitor C 18, C 19, C 20The ac filter circuit of forming active wave invigorating network suppresses 50HZ and exchanges interference and it is decayed to 1/8th of former amplitude.
Time constant is by capacitor C 21, resistance R 65, R 66, R 67Form, its time constant is 3.3S.
Gain adjusting circuit is by IC 15, resistance R 69, potentiometer R 68Form reversed feedback amplifier.Under normal circumstances, regulate R 68Should make the 1mV mark press signal is to be 2 big lattice on microcomputer monitor.
The frequency response regulating circuit is by IC 16, resistance R 71, potentiometer R 70, variable capacitance C 22Form.
Fig. 6 has specifically provided electrocardio receiver analog digital conversion and microcomputer interface circuit figure.Interface control circuit is by IC 12, IC 13, IC 14, IC 15, IC 16, IC 17, IC 18, IC 21Form.It is the expansion of 80X86 bus that bus expansion slot is arranged on the microcomputer main pole, by bus expansion slot microcomputer hardware is connected with outside input-output apparatus.Adopt the I/O chip IC 218255 is the control centre of interface circuit, makes 8255 directly and the data sum (D of microcomputer 0-D 7), control reads (RD), write (WR) bus connects.Again by microcomputer low order address bus (A 0-A 9) and logic decoding circuit IC 12, IC 13, IC 14, IC 15, IC 16, IC 17, IC 18Connect.Form 8255 interface IP address by logic decoding circuit, by IC 13Output inserts 8255 sheet choosing (CS) end, by software driver, and data communication control analog digital conversion and data transmission between formation 8255 and the microcomputer.
Analog digital conversion (A/D) circuit is by IC 19, IC 20, IC 22, IC 23Form.AD574 chip, its 12 position datawire (B are adopted in the A/D conversion 0-B 11) with 8255 B mouth (B 0-B 7) and A mouth (A 0-A 3) connect.Control line on the AD574 chip (CG, CS, R/C, A 0) also with 8255 C mouth (C 3, C 2, C 1, C 0) connect.
The electrocardio of making by said structure detects, monitoring remote transmission device, holds transmitter for ECG by the patient, and monitoring control centre of hospital holds the electrocardio receiver.Needs of patients is picked up survey, during monitoring, external electrode is placed hands respectively, foot, the chest corresponding position, energized and monitoring control centre of hospital phone, the electrocardiosignal that obtains from external electrode is through the line that leads, be input to buffer amplifier, modulate by parallel connection chopping, reach the 1-10KHZ frequency signal, be transferred to electrocardio receiving system demodulator circuit through telephone network, the audio frequency input tranformer input of electrocardio receiving system is connected with telephone set, the electrocardiosignal envelope amplitude modulation square wave of remote ecg transmitting end device transmission is input to audio frequency input tranformer input, by diode " detection " demodulator, will detect primary electrocardiosignal in the electrocardiosignal envelope amplitude modulation square wave again.After demodulation, electrocardiosignal is imported in the microcomputer, under the receiver software-driven, adopt 8253 programmable timers of microcomputer inside, will produce 8259 hardware interrupts by INT8, call the interruption capture program, gather the demonstration electrocardiosignal, on the microcomputer display monitor central monitoring system, observation patient's electrocardio real-time waveform, diagnose, guard, make effective therapeutic scheme.Make away from the big city, the rural area that condition is relatively poor relatively, but the patient in the place that can take on the telephone also can in time obtain treatment.
Description of drawings:
Fig. 1 electrocardio detects, monitoring remote transmission device includes the two-part block diagram of the machine of transmitting and receiving.
Fig. 2 transmitter for ECG input circuit figure
Fig. 3 transmitter for ECG amplification circuit diagram
Fig. 4 transmitter for ECG modification output circuit figure
Fig. 5 electrocardio receiver demodulator circuit figure
Fig. 6 electrocardio receiver analog digital conversion and microcomputer interface circuit figure

Claims (3)

1, a kind of electrocardio detect, monitoring remote transmission device, its feature includes and transmits and receives machine two parts.
2, electrocardio according to claim 1 detects, guards the remote transmission device, and its feature transmitter comprises: external electrode is respectively delivered to the input of discharger, left hand (L) with the line that leads, the right hand (R), left foot (F), right crus of diaphragm (ground wire) and chest (V), resistance R 1-R 4And capacitor C 1-C 4Form No. four filter circuits;
Buffer amplifier is by IC 3-IC 4Emitter follower is formed, and voltage gain is approximately 1;
The inferior network of Weir is by R 11-R 19The balancing resistance networks formed of totally 9 resistance, the group of networks triangularity, its three summits by buffer amplifier respectively with left hand (L), the right hand (R), left foot (F) joins, and the center on each limit of triangle is the corresponding reference point of augmented limb lead, and star-like mid point is the inferior network center of a Weir end;
Lead selector adopts 11 ingot buttons of two cuttves S 1, the conversion of carry out 0 successively, I, II, III, avr, avl, avf, V being led, the conversion by the switch that leads is with the synthetic a kind of mode of leading of human limb electrode switch groups, chest lead V 1-V 6Lead and switch determining positions by chest crosslinking electrode;
The shielding drive circuit is by IC 5, resistance R 4, R 5, capacitor C 5C 6And inductance L 7Form;
Preamplifier is by IC 6, resistance R 20, R 21, R 22, R 23And capacitor C 7Form; IC 6Be difference amplifier, gain 20 times IC 7, resistance R 28, R 29Form homophase input reversed feedback amplifier;
Exclusive circuit is by switch S 2Ground connection is formed;
Middle amplifying circuit is by IC 8, resistance R 34, R 32, R 31, R 33, potentiometer R 35 form reversed feedback amplifier;
Myoelectricity filtering is by resistance R 30, capacitor C 9Form myoelectricity interference filter circuit;
The 50HZ ac filter circuit is by IC 9, IC 10, resistance R 37, R 38, R 39, R 40, R 41, R 42, capacitor C 10, C 11, C 12The ac filter circuit of forming active wave invigorating network;
Constant-amplitude carrier signal oscillating electricity is slightly by IC 12, resistance R 45, R 46, R 47, R 48, capacitor C 14The frequency of forming is the constant amplitude square generator of 2KHZ;
Chopping modulation is by audion Q 1, Q 2, diode D 1, D 2, resistance R 50, R 51, R 52, R 43, R 44, capacitor C 13, audio frequency input tranformer T 1Form, the constant-amplitude carrier signal of 2KHZ is through capacitor C 15, resistance R 50Be added to audion Q 1Base stage, audio frequency input tranformer T 1Through resistance R 43, R 44Directly be added in audion Q 1Colelctor electrode and audion Q 2Base stage on;
Power amplifier is by audion Q 3, Q 4, resistance R 53, R 54, R 55, audio frequency input tranformer T 2Form.
3, electrocardio according to claim 1 detects, guards the remote transmission device, and its feature receiver comprises:
Diode " detection " demodulator is by audio frequency input tranformer T 3, diode D 3, D 4, capacitor C 16, C 17, resistance R 56, R 57Form;
The 50HZ ac filter circuit is by IC 13, IC 14, resistance R 56, R 59, R 60, R 61, R 62, R 63, capacitor C 18, C 19, C 20The ac filter circuit of forming active wave invigorating network;
Gain adjusting circuit is by IC 15, resistance R 69, potentiometer R 68Form reversed feedback amplifier;
The frequency response regulating circuit is by IC 16, resistance R 71, potentiometer R 70, variable capacitance C 22Form;
Interface control circuit is by IC 12, IC 13, IC 14, IC 15, IC 16, IC 17, IC 18, IC 21Form, it is the expansion of 80X86 bus that bus expansion slot is arranged on the computer motherboard, by bus expansion slot microcomputer hardware is connected with outside input-output apparatus, adopts the I/O chip IC 218255 is the control centre of interface circuit, makes 8255 directly and the data sum (D of microcomputer 0-D 7) control reads (RD), write (WR) bus connects, again by microcomputer low order address bus (A 0-A 9) and logic decoding circuit IC 12, IC 13, IC 14, IC 15, IC 16, IC 17, IC 18Connect, form 8255 interface IP address by logic decoding circuit, by IC 13Output inserts 8255 sheet choosing (CS) end, by software driver, and data communication control analog digital conversion and data transmission between formation 8255 and the microcomputer;
Analog digital conversion (A/D) circuit is by IC 19, IC 20, IC 22, IC 23Form; AD574 chip, its 12 position datawire (B are adopted in the A/D conversion 0-B 11) with 8255 B mouth (B 0-B 7) and A mouth (A 0-A 3) connect the control line on the AD574 chip (CG, CS, R qC, A 0) also with 8255 C mouth (C 3, C 2, C 1, C 0) connect.
CN 00244156 2000-07-25 2000-07-25 Cardioelectric detecting, monitoring remote transmitter Expired - Fee Related CN2436099Y (en)

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Application Number Priority Date Filing Date Title
CN 00244156 CN2436099Y (en) 2000-07-25 2000-07-25 Cardioelectric detecting, monitoring remote transmitter

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Application Number Priority Date Filing Date Title
CN 00244156 CN2436099Y (en) 2000-07-25 2000-07-25 Cardioelectric detecting, monitoring remote transmitter

Publications (1)

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CN2436099Y true CN2436099Y (en) 2001-06-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102144922A (en) * 2011-04-15 2011-08-10 北京正业德盈科技有限公司 Physiological signal acquisition electrode and acquisition amplification circuit
CN102283646A (en) * 2010-06-17 2011-12-21 通用电气公司 Ecg front end and method for acquiring ecg signals
CN103300844A (en) * 2013-05-28 2013-09-18 昆明医科大学 Twelve-lead electrocardiosignal synchronous acquisition module
CN104510462A (en) * 2013-10-08 2015-04-15 联发科技股份有限公司 ECG lead signal generating circuit and ECG signal generating method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102283646A (en) * 2010-06-17 2011-12-21 通用电气公司 Ecg front end and method for acquiring ecg signals
CN102283646B (en) * 2010-06-17 2015-02-25 通用电气公司 ECG front end and method for acquiring ECG signals
CN102144922A (en) * 2011-04-15 2011-08-10 北京正业德盈科技有限公司 Physiological signal acquisition electrode and acquisition amplification circuit
CN103300844A (en) * 2013-05-28 2013-09-18 昆明医科大学 Twelve-lead electrocardiosignal synchronous acquisition module
CN104510462A (en) * 2013-10-08 2015-04-15 联发科技股份有限公司 ECG lead signal generating circuit and ECG signal generating method

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C19 Lapse of patent right due to non-payment of the annual fee
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