CN2084800U - Electrocardiosignal monitor - Google Patents

Abstract

The utility model relates to a small-size portable electrocardio monitoring appliance, which has the alarm-giving function of cardiac arrhythmia, ventricular premature beat, ST segment deflection, etc., and the function of sending electrocardio signals with a tape record or a telephone, is suited for a cardiopath to carry at home or outside and is used to monitor the heart at any time.

Description

Electrocardiosignal monitor

This utility model belongs to electron medical treatment cardiac monitoring instrument.

Existing electrocardiogram monitor mainly is made up of come off sound light alarming circuit, simulation/data converter, a thermoelectric print circuit, pathological changes sound light alarming circuit, computer control circuit and picture tube etc. of electrocardiosignal amplifying circuit, electrode, mainly have pathological changes such as arrhythmia, ventricular premature contraction and report to the police, functions such as a thermoelectric printed waveform, the printing automatically of reporting to the police.This electrocardiogram monitor volume is big, costs an arm and a leg, and is only applicable to hospital ward the cardiac is guarded use, does not have audiotape record or phone to transmit the function of electrocardiosignal, be not suitable for the cardiac at home or when going out monitoring use.

The purpose of this utility model is to provide a kind of cardiac of being suitable for individual or carry at any time when going out heart is guarded at home, have pathological changes warning functions such as arrhythmia, ventricular premature contraction, ST field offset, and available audiotape writes down or transmit the small portable electrocardiosignal monitoring device of electrocardiosignal with phone.

Small portable electrocardiosignal monitoring device provided by the utility model is mainly by shell (1), switch (2), lead and take off lamp (3), warning lamp (4), charactron (5), the input jack (6) that leads is selected display button (7), buzzer (8), external power supply jack (9), phone/recording jack (10), high impedance differential amplifier circuit (11), the oscillating circuit (12) that comes off leads, current potential improves circuit (13), band filter (14), rectification circuit (15), lead and take off circuit for lamp (16), central microprocessor reset circuit (17), simulation/data converter (18), central microprocessor control circuit (19), select display circuit (20); pathological changes sound light alarming circuit (21) and by precise frequency--voltage changer (29) and peripheral resistance R 1(22 thereof); R2(24); R3(25); R4(27); R5(28); R6(30); R7(32); capacitor C 1(23); C2(26); C3(31); C4(33) wait the compositions such as VCO control circuit that constitute.It is the operational amplifier dual power supply to be used be converted to the single supply use that current potential improves circuit (13).When not having lead signals input (being that crosslinking electrode comes off) in the input jack (6) that leading, after the frequency signal that the oscillating circuit (12) that comes off by leading produces amplifies through high impedance differential amplifier circuit (11), filter by the signal of band filter (14) other frequency, only reserve frequency is the oscillator signal that comes off that leads of 390-400HZ, after this signal process rectification circuit (15) rectification, take off circuit for lamp (16) and make and lead that to take off lamp (3) shinny through leading, come off with prompting user crosslinking electrode.Central microprocessor reset circuit (17) is to make central microprocessor eliminate the noise signal that leads and come off and cause automatically, and makes central microprocessor restart work.When the lead signals input is arranged in the input jack (6) that leading, electrocardiosignal is after high impedance differential amplifier circuit (11) amplifies, is data signal input central microprocessor control circuit (19) through simulation/data converter (18) with analog signal conversion, electrocardiosignal is carried out discriminatory analysis, if electrocardiosignal has pathological changes, then make pathological changes sound light alarming circuit (21) work, sound and the light warning by buzzer (8) and warning lamp (4).Observe displaying contents as needs, and press and select display button (7), select display circuit (20) work, and, upward show content corresponding at charactron (5) according to the number of times of being pressed.By precise frequency-voltage changer (29) and resistance R 1(22), R2(24), R3(25), R4(27), R5(28), R6(30), R7(32) and capacitor C 1(23), C2(26), C3(31), C4(33) the VCO control circuit that constitutes is that the electrocardiosignal from high impedance differential amplifier circuit (11) is converted to the frequency modulation square-wave signal, by phone/recording jack (10), transmit so that be applicable to audiotape record or phone.

This utility model compared with prior art, it is little to have a volume, is convenient to the cardiac and carries, monitoring is used at home or when going out at any time, and can transmit electrocardiosignal with the audiotape record or with phone.

Accompanying drawing 1 is the electrocardiosignal monitoring device shape assumption diagram, (1) is shell, (2) be switch, (3) take off lamp for leading, and (4) are warning lamp, (5) be charactron, (6) be the input jack that leads, (7) for selecting display button, (8) are buzzer, (9) be external power supply jack, (10) are phone/recording jack.

Accompanying drawing 2 is electrocardiosignal monitoring device electrical schematic diagrams, (6) be the input jack that leads, (10) be phone/recording jack, (11) be the high impedance differential amplifier circuit, (12) are the oscillating circuit that comes off that leads, and (13) improve circuit for current potential, (14) be band filter, (15) be rectification circuit, (16) take off circuit for lamp for leading, and (17) are the central microprocessor reset circuit, (18) be simulation/data converter, (19) be the central microprocessor control circuit, (20) for selecting display circuit, (21) are the pathological changes sound light alarming circuit, (22) be resistance R 1, (23) be capacitor C 1, (24) are resistance R 2, and (25) are resistance R 3, (26) be capacitor C 2, (27) be resistance R 4, (28) be resistance R 5, (29) are precise frequency--voltage changer, and its input/output terminal is respectively A, B, C, D, E, F, G, the H end, (30) be resistance R 6, (31) be capacitor C 3, (32) are resistance R 7, and (33) are capacitor C 4.

Followingly describe in detail according to accompanying drawing.

Input signal enters by precise frequency through the electrocardiosignal that high impedance differential amplifier circuit (11) amplifies when leading--during the VCO control circuit of voltage changer (tightly descend the abbreviation changer) (29) and peripheral resistance capacitance formation thereof, electrocardiosignal is through dropping resistor R1(22) blood pressure lowering and by partiting dc capacitor C1(23), arrive the input G end of changer (29), for guaranteeing that input G terminal voltage is for just, with clamping down on resistance R 2(24) and R3(25) (R2=R3) with the voltage clamp of input G end at+2.5V, thereby the input voltage that guarantees changer (29) input G end be on the occasion of.The positive input voltage V of changer (29) G end _IWith its A end and F end threshold voltage V in parallel _X(V herein relatively _XBe zero), then start the pulse intervalometer in the changer (29), frequency output crystal and switched current source are opened in the output of intervalometer simultaneously, cycle is t=1,1R6, C3, in this cycle, electric current by switched current source to shunt capacitance C2(26) charging, make changer (29) A end hold the threshold voltage V at place in parallel with F _XRectify input voltage V greater than G _IWhen this end cycle, electric current turn-offs, and intervalometer resets, and at this moment the A of changer (29) end no current flows through capacitor C 2(26) gradually by resistance R 4(27) discharge, up to threshold voltage V _XDrop to positive input voltage V _IThe time till.Then, comparator starts intervalometer, begins another circulation.Switched current source in the changer (29) is held through resistance R 5(28 by its B) ground connection, capacitor C 4(33) be that noise resistance disturbs.Can pass through resistance R 6(30) and capacitor C 3(31) mid frequency of changer (29) C end output changed, thereby obtain being applicable to phone and transmitting or use the sound recordings electrocardiosignal with the different frequency modulated audio signals that change of input voltage at the circuit that is attached thereto/recording jack (10).

Resistance R 1(22) with capacitor C 1(23) a placed in-line end is connected with high impedance differential amplifier (11), and the other end is received the G end of changer (29); The G of changer (29) end is respectively through resistance R 2(24) with R3(25) hold with changer (29) H and to be connected with ground wire; Changer (29) A end and the parallel connection of F end are after resistance R 4(27) and capacitor C 2(26) ground connection; Changer (29) B end is through resistance R 5(28) ground connection; Changer (29) D holds ground connection, and changer (29) E holds respectively through resistance R 6(30) with capacitor C 3(31) be connected with ground wire with changer (29) H end; Changer (29) H end is through capacitor C 4(33) ground connection, conversion (29) C hold through resistance R 7(32) hold with changer (29) H and be connected and be connected the other end ground connection of phone/recording jack (10) with an end of phone/recording jack (10).

Claims (1)

1, a kind of electrocardiosignal monitoring device is by shell (1), switch (2), lead and take off lamp (3), warning lamp (4), charactron (5), input jack (6) leads, buzzer (8), high impedance differential amplifier circuit (11), the oscillating circuit (12) that comes off leads, band filter (14), rectification circuit (15), lead and take off circuit for lamp (16), central microprocessor reset circuit (17), simulation/data converter (18), central microprocessor control circuit (19); pathological changes sound light alarming circuit compositions such as (21) is characterized in that by precise frequency-voltage changer (hereinafter to be referred as changer) (29) and resistance R 1 (22); R2 (24); R3 (25); R4 (27); R5 (28); R6 (30); R7 (32) and capacitor C 1 (23); C2 (26); C3 (31); the Voltage-Controlled oscillation circuit of C4 formations such as (33) and the phone/recording jack (10) that is attached thereto thereof; Resistance R 1 (22) is connected with high impedance differential amplifier (11) with capacitor C 1 (a 23) placed in-line end, and the other end is received the G end of changer (29); The G end of changer (29) is connected with ground wire with changer (29) H end with R3 (25) through resistance R 2 (24) respectively, and changer (29) A end and the parallel connection of F end are after resistance R 4 (27) and capacitor C 2 (26) ground connection; The B end of changer (29) is through resistance R 5 (28) ground connection; The D end ground connection of changer (29); The E end of changer (29) is connected with ground wire with changer (29) H end with capacitor C 3 (31) through resistance R 6 (30) respectively, and changer (29) H holds through electric capacity (33) ground connection; Changer (29) C end is held through resistance R 7 (32) and changer (29) H and is connected and is connected the other end ground connection of phone/recording jack (10) with an end of phone/recording jack (10).

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