CN2238020Y - Pocket ECG signal real-time telemetering monitor - Google Patents

Pocket ECG signal real-time telemetering monitor Download PDF

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Publication number
CN2238020Y
CN2238020Y CN 95221561 CN95221561U CN2238020Y CN 2238020 Y CN2238020 Y CN 2238020Y CN 95221561 CN95221561 CN 95221561 CN 95221561 U CN95221561 U CN 95221561U CN 2238020 Y CN2238020 Y CN 2238020Y
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China
Prior art keywords
circuit
amplifier
emitter
utility
amplifying circuit
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Expired - Fee Related
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CN 95221561
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Chinese (zh)
Inventor
张万铸
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Beijing Normal University
Beijing Hospital
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Beijing Normal University
Beijing Hospital
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Priority to CN 95221561 priority Critical patent/CN2238020Y/en
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Publication of CN2238020Y publication Critical patent/CN2238020Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model belongs to the technical field of medical electronic instruments. The utility model comprises an emitter composed of an electrocardio signal amplifying circuit, a voltage controlling modulation circuit, an output amplifying circuit and a power supply, and a receiver composed of an amplifying circuit for sound frequency signals, a demodulation circuit, a demodulation signal amplifying circuit and a power supply. The utility model is characterized in that a third amplifying stage of the electrocardio signal amplifying circuit comprises a low pass filter, an on-off switch used for adjusting amplifying times, and a blocking proof capacitor. The utility model has the advantages of good performance, small volume, light weight and low power consumption, and the emitter only needs dry cells of +-1.5V to supply power. Users can carry the utility model conveniently and send the electrocardio signals in real time for hospitals to diagnose in time.

Description

Pocket electrocardiosignal real-time telemetry monitor device
This utility model belongs to the century electronic instrument of medicine technical field, particularly to the improvement design of the detection monitor device circuit unit of human ecg signal.
Electrocardiosignal remote measurement monitor device is a kind ofly can be at any time patient's electrocardiosignal to be sent to hospital or emergency center receives, for hospital diagnosis analysis, a kind of medical electronic apparatus that patient can be got timely medical treatment.Chinese patent 90221823.9 is entitled as " body electrical signals phone transmission device " and just belongs to this quasi-instrument.This device is made up of transmitter and receiver, it is human ecg signal that pick off the is obtained measuring amplifier through transmitter, photoelectrical coupler, frequency interleaved modulation modulator, be sent to receiver by telephone wire after each processing of circuit of Signal Monitor and power amplifier, after the processing of the spoke degree actuator by receiver, descriminator, Signal Monitor, each circuit of low pass filter, this information is connected to the electrocardiograph of hospital or the input of display, for doctor's analyzing and diagnosing.It is good that this device has transmission performance, characteristics that cost is low, but still have following weak point: one, though this device has adopted devices such as IC, power consumption is very big, have to adopt the 220V alternating current through transformator, rectification, filtering, voltage stabilizing or ± 12V DCPower supply, this personal safety that just must will solve the measured guarantees, therefore will take proper measure on technology, has increased the difficulty of making for this reason; Its two, the loudspeaker power of its transmitter outfan is 2 watts, its volume is inevitable huge, heavy, can only place a fixed place, therefore can't realize the mobile patient outside hospital is carried out the ambulatory ecg signal real-time monitoring.
The purpose of this utility model is to overcoming the weak point of said apparatus, design a kind of pocket electrocardiosignal real-time telemetry monitor device, it is little not only to have volume, low in energy consumption, the advantage functional, that cost is low, and need only 1.5V, the 3V battery powered, emitter energy safety, light being carried on one's body the patient, the purpose of realization real-time monitoring.
The pocket electrocardiosignal real-time telemetry monitor device of this utility model design, comprise by the electrocardiosignal amplifying circuit that is coupled to each other, voltage-controlled FM circuit, the emitter that FM signal output amplifier and power circuit constitute, with link to each other with emitter by telephone transmission line by the sound-electric coupler that is coupled to each other, amplifier circuit for sound frequency signal, demodulator circuit, the receptor that restituted signal amplifying circuit and power circuit constitute, it is characterized in that the three-stage amplifier that the electrocardiosignal amplifying circuit of said emitter is made up of a plurality of operational amplifiers, wherein the 3rd amplifier stage comprises third level operational amplifier, R, the C2 low pass filter, be positioned at second, the on and off switch of the adjusting amplification that is connected in third level operational amplifier input between the three-stage operational amplifier, and be connected in anti-blocking capacitor C 1 between C2 and the ground.
The said frequency modulation out amplifier of this utility model is made up of three transistor Ts 1, T2, T3 and the volume control potentiometer that is connected in the T1 base stage, said transmitter power is by ± 1.5V two No. 5 batteries of joint and the on and off switch that is attached thereto, energising indicator LED forms, said receiver power supply is by ± 3V (No. 5, four joints) battery and the on and off switch that is attached thereto, and energising indicator LED forms.
The said operational amplifier of this utility model can be selected F-324 four high guaily unit IC for use, and said voltage-controlled FM circuit can be selected the CC4046 Phase Lock Loop IC for use.
Work process of the present utility model is: the emitter user is input to emitter with the electrocardiosignal that external electrode obtains, careful amplification circuit of electrical signal is amplified to after the suitable multiple the voltage-controlled FM circuit of input with electrocardiosignal and converts FM signal to and deliver to output amplifier again and amplify, and is adjusted to incoming telephone line after the suitable volume by the volume by-pass cock; The signal of telecommunication that the sound that the sound-electric coupler of receptor transmits telephone wire converts corresponding frequencies to sends into that amplifier circuit for sound frequency signal amplifies, input demodulator demodulation after the Filtering Processing, amplify the back through the restituted signal amplifier again and import electrocardiograph, note the electrocardiogram of emitter user, the doctor can make guidance instruction to the emitter user by phone according to EGC pattern.
The utlity model has following characteristics:
First, this installs the composition of each element circuit, the employing of the components and parts of inside, unit is all passed through appropriate design and is selected meticulously, make it simple in structure, and all adopt universal elements, realize easily, though saved circuit such as the photoelectrical coupler in the prior art, 50Hg wave trap, its function admirable, reliable operation;
The second, this device adopts battery powered, power consumption low, has not only saved transformator, a plurality of element circuits such as full-bridge rectifier, manostat, potentiometer and avoided the personal safety problem that adopts the 220V Alternating Current Power Supply to cause;
The 3rd, this device emitter volume is little, and is in light weight, and user can carry real-time reception electrocardiosignal, in time send, make the doctor of hospital can be in time the electrocardio situation away from the user in hospital or residence to be disposed.
Brief Description Of Drawings:
Fig. 1 is the transmitter circuit schematic diagram of this utility model embodiment.
Fig. 2 is the acceptor circuit schematic diagram of this utility model embodiment.
Fig. 3 is provided with figure for the launcher shell panel of this utility model embodiment.
Fig. 4 is provided with figure for the receptor housing face-plate of this utility model embodiment.
This utility model is designed a kind of pocket its structure of electrocardiosignal real-time telemetry monitor device shown in Fig. 1-4, and present embodiment mainly comprises emitter and receptor two large divisions, is described in detail as follows respectively in conjunction with the accompanying drawings:
The transmitter circuit of this practical example is formed, and as shown in Figure 1, comprises electrocardiosignal amplifying circuit (I), voltage-controlled FM circuit (II) and FM signal out amplifier (III), and power supply (IV), four element circuits are divided as dotted line among the figure.Wherein electrocardiosignal amplifying circuit (I) is made up of the three-stage operational discharger, with differential first amplifier stage of degree of depth negative feedback of amplifier OA, OB composition and second amplifier stage of OC composition is mature circuit type formula morning, key is that the IC device should have high common mode rejection ratio, open-loop gain and input impedance, the above-mentioned parameter of OA, OB, OC and the corresponding resistance unanimity of will trying one's best selects for use F-324 four high guaily unit IC also can adopt LM358IC or CMOS amplifier IC in the present embodiment.To its closed loop of electrocardiosignal, the differential mode amplification can be elected several times as with the need, and second level amplifier OC can amplify the difference of the voltage of OA, OB and be transformed into single-ended output over the ground.Amplifier OD and appurtenances thereof are formed the 3rd amplifier stage appurtenances and are comprised the low pass filter of being made up of R13 and C2, regulating amplification (can be by basic amplification K * 1, K * 2, K * 4 are regulated) K switch 21, K22, anti-blocking electric capacity (C1>>C2) its effect be the homophase that guarantees amplifier OD, anti-phase input dc power flat all the time near and can under cas fortuit, not make the third level enter inelastic region (obstruction) etc., the setting of C1 is an outstanding feature of this circuit, in the signals of telecommunication such as biomedicine amplify universal meaning is arranged.
Voltage-controlled FM circuit (II) is the variation function u (t) of time to be converted the electrical signal amplitude of ecg signal amplifier output the element circuit of frequency to the function f (t) of time to linearly, and it is made up of a slice CC4046 phase-locked loop intergrated circuit and a plurality of resistance capacitance.The quiescent value u0's of the element C21 of decision fundamental frequency and R21 and control voltage is selected, all can find in the IC handbook.As figure, the electrocardiosignal after OD amplifies is sent into the voltage-controlled signal input part 9 of phaselocked loop through the partiting dc circuit of compositions such as C22, R23.1.5V V+ can be used to regulate u0 through R22, potentiometer W1.
FM signal output amplifier (III) comprises that the amplifier that transistor T 1, T2, T3 (adopting 9014) form is used to amplify FM signal to drive loudspeaker, potentiometer W2 is in order to regulate volume, do not influence the conducting of loudspeaker during socket JACK2 normality, when inserting corresponding plug and tie, loudspeaker disconnect and the plug of JACK2 can connect earplug and monitors synthetic cardiechema signals or do his and use.
Power supply (IV) comprises with No. 5 battery powered of 2 joints part, on and off switch K1.1, the LED of K1.2 and being used to refer to ± 1.5V power connection.
The acceptor circuit of present embodiment is formed as shown in Figure 2, comprises amplifier circuit for sound frequency signal (V), demodulator (VI), restituted signal amplifying circuit (VII) and power supply (VIII).Each element circuit all adopts custom circuit.Indicate the MIC place among the figure and be the socket of the modulation signal that the input phone transmits.Sound-electric coupler (among Fig. 2 expression) is the parts that convert tones into the corresponding frequencies signal of telecommunication, one termination pick up, and the other end is welded with plug, and go-and-retum is with one section cable connection.As the electrocardiosignal of frequency modulation when the receiving terminal telephone set is transported to receptor through sound-electric coupler, the amplification of the audio FM amplifier of forming through A, B two stage amplifer, the Filtering Processing of high and low frequency, the FM signal amplitude is enough big, interference such as the sound of in whole long distance transport process, sneaking into, electricity, magnetic, vibrations, filtering more significantly.Through C7, the coupling circuit that R11 forms inserts the input of demodulator circuit by the signal of amplifier B output.That demodulator uses also is CMOS phaselocked loop CC4046, and the demodulation effect is fine, the catching range Δ f of frequency CREnough wide, can adapt to the needs that monitoring department receives the modulated electrocardiosignal of numerous emitter user.Mid frequency, can solve by debugging in the time of will determining a mid frequency F0 in the 1-2KHZ scope.R19, C11 and R22, C12 etc. all residual carrier frequency component after the filtering demodulation etc. add, and the restituted signal output amplifier is made up of C, D two-stage IC operational amplifier, also is provided with the LED power supply indicator in the receptor.
The emitter of present embodiment and the appearance structure of receptor and panel designs are shown in Fig. 3,4, emitter main body circuit is contained in the compression moulding box of 110mm * 64mm * 28mm size, wherein front plate is provided with display lamp 31, and loudspeaker window 33, side panel is provided with electrocardiosignal input socket 32, volume control potentiometer dial 34, electricity-electric coupling socket 35 reaches ± 1.5V on and off switch 36.
Receptor main body circuit is contained in the flat case of 90mm * 200mm * 25mm, its front plate be provided be respectively arranged with on display lamp 41 side panels sound-electric coupling socket/electrocardiograph socket/and ± the 3V on and off switch.The plug that the emitter user leads external electrode during the device operation inserts in the electrocardiosignal input socket, open power supply, the volume that makes loudspeaker is (scalable) suitably, behind the phone of connecting relevant monitoring department in case of necessity, the receiver of telephone set is aimed at loudspeaker; Monitoring department has receptor, the plug that is about to sound-electric coupler at ordinary times inserts in the socket, pick up one end of sound-electric coupler is aimed at the loudspeaker of " receiver " or " hands-free ", at this moment the modulated electrocardiosignal that sends in real time is promptly through the processing of receptor, be connected to electrocardiograph input or monitor input at its accessory power outlet OUT place through suitable connecting wire, note the electrocardiogram (or observing its electrocardiogram situation at that time on monitor) of emitter user, the doctor also can make guidance instruction to the emitter user.
Experimental results show that: the emitter of direct electrocardiographic wave of on electrocardiograph, making and this device of process, phone transmission is passed to same the ecg wave form on the electrocardiograph after being received by receptor, its difference is no more than 5%, with the test of standard cardioelectric signal generator, differs and is no more than 3%.

Claims (3)

1, pocket electrocardiosignal real-time telemetry monitor device, comprise by the electrocardiosignal amplifying circuit that is coupled to each other, voltage-controlled FM circuit, the emitter that FM signal output amplifier and power circuit constitute, with link to each other with emitter by telephone transmission line by the sound-electric coupler that is coupled to each other, amplifier circuit for sound frequency signal, demodulator circuit, the receptor that restituted signal amplifying circuit and power circuit constitute, it is characterized in that the three-stage amplifier that the electrocardiosignal amplifying circuit of said emitter is made up of a plurality of operational amplifiers, wherein the 3rd amplifier stage comprises third level operational amplifier R, the C2 low pass filter, be positioned at second, the on and off switch of the adjusting amplification that is connected in third level operational amplifier input between the three-stage operational amplifier, and be connected in anti-blocking capacitor C 1 between C2 and the ground.
2, monitor device as claimed in claim 1, it is characterized in that said frequency modulation out amplifier is made up of three transistor Ts 1, T2, T3 and the volume control potentiometer that is connected in the T1 base stage, said transmitter power is by ± 1.5V two No. 5 batteries of joint and the on and off switch that is attached thereto, energising indicator LED forms, said receiver power supply is by ± 3V (No. 5, four joints) battery and the on and off switch that is attached thereto, and energising indicator LED forms.
3, monitor device as claimed in claim 1 or 2 is characterized in that said operational amplifier selects F-324 four high guaily unit IC for use, and said voltage-controlled FM circuit is selected the CC4046 Phase Lock Loop IC for use.
CN 95221561 1995-09-15 1995-09-15 Pocket ECG signal real-time telemetering monitor Expired - Fee Related CN2238020Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95221561 CN2238020Y (en) 1995-09-15 1995-09-15 Pocket ECG signal real-time telemetering monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95221561 CN2238020Y (en) 1995-09-15 1995-09-15 Pocket ECG signal real-time telemetering monitor

Publications (1)

Publication Number Publication Date
CN2238020Y true CN2238020Y (en) 1996-10-23

Family

ID=33869147

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95221561 Expired - Fee Related CN2238020Y (en) 1995-09-15 1995-09-15 Pocket ECG signal real-time telemetering monitor

Country Status (1)

Country Link
CN (1) CN2238020Y (en)

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C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee