CN107046412A - A kind of weighted resistor formula ECG signal generator - Google Patents
A kind of weighted resistor formula ECG signal generator Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/033—Monostable circuits
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Abstract
The present invention relates to a kind of weighted resistor formula ECG signal generator, belong to Medical Instruments technical field.The present invention includes signal adaptation module, weighted resistance network and signal distribution module, oscillation module, signal control module, power module；Power module is connected with weighted resistance network and signal distribution module, oscillation module, signal control module respectively, and signal control module, oscillation module, weighted resistance network are sequentially connected successively with signal distribution module, signal adaptation module.The present invention can be used in electrocardiograph, the maintenance of patient monitor, the inspection of alarm setting and electrocardiograph, the test of patient monitor lead cable and teaching research of medicine occasion.Its simple in construction, small volume, low in energy consumption, easy to manufacture, reliability are high, precision is high, cheap, practical.
Description
Technical field
The present invention relates to a kind of weighted resistor formula ECG signal generator, belong to Medical Instruments technical field.
Background technology
ECG signal generator is a kind of low frequency signal source, is widely used in Medical Instruments maintenance, test, demonstration and imparts knowledge to students
The fields such as experiment.In hospital, patient monitor, electrocardiograph etc. are the holding equipments of clinically the most frequently used first aid and life.Electrocardio
Figure machine, patient monitor are directly used in patient, directly relate to the healthy and life security of patient.Work as electrocardiogram
After machine, patient monitor failure are repaired.In order to ensure patient monitor, electrocardiograph parameter accuracy, will typically check
Once whether each lead work is normal.At this moment trial inspection can be carried out instead of human body with ECG signal generator, to be adjusted
Examination.So do not only safety again to insure, it is to avoid check with human body the hidden danger of generation.
The ECG signal generator that current China uses, is largely import, expensive.And when failure
When, trouble is repaired, and expense is relatively high.Domestic production is mostly made up of discrete component, and its volume is big, and function is few, essence
Degree is not high, and versatility is bad.
The content of the invention
The technical problem to be solved in the present invention is：The present invention provides a kind of weighted resistor formula ECG signal generator, circuit letter
It is list, reliability height, high, low in energy consumption precision, small volume, cheap.Signal transacting, 18650 batteries are carried out using integrated chip
Power supply or USB power（Battery can be charged simultaneously）, exportable 30-120 beats/min of heart rate signal, and it is defeated with R ripple signals
Outgoing interface, the volume for solving discrete component composition ECG signal generator presence is big, and function is few, and precision is not high, and versatility is not
Well, the problems such as inconvenient maintenance.
The technical scheme is that：A kind of weighted resistor formula ECG signal generator, including signal adaptation module 1, weighted resistor
Network and signal distribution module 2, oscillation module 3, signal control module 4, power module 5；Power module 5 respectively with weighted resistor net
Network is connected with signal distribution module 2, oscillation module 3, signal control module 4, signal control module 4, oscillation module 3, power electricity
Resistance network is sequentially connected successively with signal distribution module 2, signal adaptation module 1；The power module 5 passes through boost switching device
Cell voltage 3.6V is increased into 5V to be powered；
The signal control module 4 is a monostable timing device, and trigger signal is given by weighted resistance network and signal distribution module 2
Go out；
The oscillation module 3 produces square-wave signal and used for weighted resistance network and signal distribution module 2, at the same oscillator signal by
Signal control module 4 is controlled；
The weighted resistance network and signal distribution module 2 produce electrocardiosignal and the output of R ripples；
The signal for exporting weighted resistance network and signal distribution module 2 in the signal adaptation module 1 filtered through RC after by electric capacity
Coupled to second resistance voltage-divider, altogether by signal attenuation about 48-68dB, and the output electrocardiosignal in the form of LA, RA, RL.
The signal adaptation module 1 includes electrocardio left arm signal output part LA, electrocardio right arm signal output part RA, the heart
Electric right leg drive signal output part RL；Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electrocardio output signal width
Degree regulation potentiometer RV1, filter capacitor C1, coupled capacitor C2, anti-tampering electric capacity C3；
Resistance R11 one end in signal adaptation module 1 is connected with the output end in weighted resistance network and signal distribution module 2, electricity
The resistance R11 other end is connected with filter capacitor C1 positive pole and coupled capacitor C2 positive pole, filter capacitor C1 negative pole ground connection；Coupling
Conjunction electric capacity C2 negative pole is connected with the fixing end that electrocardio amplitude output signal adjusts potentiometer RV1, electrocardio amplitude output signal
Regulation potentiometer RV1 another fixing end then connects with resistance and is grounded after R12 connects, electrocardio amplitude output signal regulation potentiometer
Anti-tampering electric capacity C3 in parallel between RV1 slider and ground, while connecting with resistance R13 one end；The resistance R13 other end
Then connected with resistance R14, resistance R15；Resistance R13 and resistance R14 tie point access electrocardio left arm signal output part LA；Electricity
Hinder R14 and resistance R15 tie point access electrocardio right leg drive signal output part RL；Resistance R15 other end ground connection is used simultaneously
Make electrocardio right arm signal output part RA.
The weighted resistance network and signal distribution module 2 include 4017 chip U1,4069 chip U4, light emitting diode DR,
Diode D0-D9, resistance R0-R10, resistance R16, resistance R17, R ripple delivery outlet RW-OUT；
Weighted resistance network and the chips U1 of signal distribution module 2 16 pin are connect 555 in+5V, 8 pin ground connection, 14 pin and oscillation module 3
The chip U2 connection of 3 pin, U1 13 pin and 15 pin ground connection；U1 3,2,4,7,10,5,6,7,9,11 pin respectively with diode
D0-D9 positive pole connection, wherein U1 10 pin also with U4:Electric capacity in B 3 pin connection, U1 11 pin and signal control module 4
C8 is connected；U4:B 4 pin and U4:The negative pole connection of C 5 pin and light emitting diode DR；Chip U4 14 pin meet+5V, 7 pin and connect
Ground；Light emitting diode DR positive pole is then connected with resistance R17 and is followed by+5V power supplys；U4:C 6 pin are connected with resistance R16 to be followed by R
Ripple delivery outlet RW-OUT, delivery outlet other end ground connection；Diode D0-D9 negative pole is connected with resistance R0-R9 one end respectively,
The resistance R0-R9 other end is connected to the ground through R10 again after linking together.
The oscillation module 3 includes 555 chip U2,4069 chip U4:A, resistance R18, resistance R19, electric capacity C4, electric capacity
C5；
555 chip U2 8 pin connect+5V, 1 pin ground connection in oscillation module 3,5 foot meridian capacitor C4 are grounded, 4 pin meet chip U4:The 2 of A
Pin, chip U4:A 1 pin is connected with 3 pin of the chip U3 in signal control module 4；Chip U4 14 pin connect+5V, 7 pin ground connection；
Chip U2 2 pin are connected with 6 pin to be grounded through C5 again, while being also connected with R19 one end, one end phase of the R19 other end and R18
Connection, while being connected on chip U2 7 pin；R18 another termination+5V；
The signal control module 4 includes 555 chip U3, diode D10, resistance R20, resistance R21, heart rate regulation potentiometer
RV2, electric capacity C6, electric capacity C7, electric capacity C8；
555 chip U3 8 pin connect+5V, 1 pin ground connection, 5 foot meridian capacitor C7 ground connection in signal control module 4；Chip U3 2 pin connect
Connect diode D10 positive pole, resistance R21 one end, electric capacity C8 one end；Diode D10 negative pole connects chip U3 4 pin, electricity
Hinder R21 another termination+5V, electric capacity C8 another termination weighted resistance network and the chips U1 of signal distribution module 2 11 pin；
555 chip U3 6 pin are connected with 7 pin to be grounded through electric capacity C6, while connecting resistance R20 one end；Resistance R20 another termination
A heart rate regulation potentiometer RV2 fixing end, heart rate regulation potentiometer RV2 another fixing end is connected with its slider
It is followed by+5V power supplys；
The power module 5 includes MAX1724EZK50 chips U5, boost inductance L1, filter condenser CP1, filter condenser
CP2, electric capacity C9-C16, power switch SW and battery BAT, light emitting diode DP, resistance R22, diode D11, USB interface J1；
Battery BAT 18650 positive pole is connected with diode D11 negative pole in power module 5, at the same through switch SW respectively with electricity
Hold CP1 positive pole, chip U5 1 pin and 3 pin, inductance L1 one end to be connected；Diode D11 positive pole and the 1 of USB interface J1
Pin, light emitting diode DP positive pole connection, light emitting diode DP it is negative connected with resistance R22 after ground connection；The inductance L1 other end
It is connected with chip U5 5 pin, chip U5 4 pin and capacitor CP2 positive pole, capacitor C9-C12 positive pole, capacitor
C13-C16 one end connection, battery BAT negative pole, electric capacity CP1 negative pole, chip U5 2 pin, capacitor CP2 negative pole, electricity
Container C9-C12 negative pole, capacitor C13-C16 other end connection USB interface J1 4 pin link together.
The beneficial effects of the invention are as follows：Available for electrocardiograph, the maintenance of patient monitor, the inspection of alarm setting and electrocardiogram
In machine, the test of patient monitor lead cable and teaching research of medicine occasion.It is its simple in construction, small volume, low in energy consumption, easy
Manufacture, reliability height, precision are high, cheap, practical.
Brief description of the drawings
Fig. 1 is signal adaptation module circuit theory diagrams of the present invention；
Fig. 2 is weighted resistance network of the present invention and signal distribution module circuit theory diagrams；
Fig. 3 is oscillation module circuit theory diagrams of the present invention；
Fig. 4 is signal control module circuit theory diagrams of the present invention；
Fig. 5 is power module circuitry schematic diagram of the present invention；
Fig. 6 is circuit theory diagrams of the present invention；
Fig. 7 is circuit connection block diagram of the present invention；
Fig. 8 is typical cardiac electrical figure waveform of the present invention；Wherein abscissa：Time, use electrocardiograph chart drive speed（25mm/s）Represent,
Ordinate：Magnitude of voltage（1mV/10mm）.Figure is an electrocardiogram（ECG））Waveform,（P, Q, R, S, T, U ripple）Wherein：R ripples 2mV, the heart
72 beats/min of rate.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the invention will be further described.
Embodiment 1：As shown in figures 1-8, a kind of weighted resistor formula ECG signal generator, including signal adaptation module 1, power electricity
Hinder network and signal distribution module 2, oscillation module 3, signal control module 4, power module 5；Power module 5 respectively with weighted resistor
Network is connected with signal distribution module 2, oscillation module 3, signal control module 4, signal control module 4, oscillation module 3, power
Resistor network is sequentially connected successively with signal distribution module 2, signal adaptation module 1；The power module 5 passes through boost switching
Cell voltage 3.6V is increased to 5V and is powered by device；
The signal control module 4 is a monostable timing device, and trigger signal is given by weighted resistance network and signal distribution module 2
Go out；
The oscillation module 3 produces square-wave signal and used for weighted resistance network and signal distribution module 2, at the same oscillator signal by
Signal control module 4 is controlled；
The weighted resistance network and signal distribution module 2 produce electrocardiosignal and the output of R ripples；
The signal for exporting weighted resistance network and signal distribution module 2 in the signal adaptation module 1 filtered through RC after by electric capacity
Coupled to second resistance voltage-divider, altogether by signal attenuation about 48-68dB, and the output electrocardiosignal in the form of LA, RA, RL.
As the preferred scheme of the present invention, specific signal adaptation module 1, weighted resistance network and signal distribution module 2, shake
Following design can be used by swinging module 3, signal control module 4, power module 5：
It is right that the signal adaptation module 1 includes electrocardio left arm signal output part LA, electrocardio right arm signal output part RA, electrocardio
Leg drive signal output end RL；Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electrocardio amplitude output signal are adjusted
Nodal potential device RV1, filter capacitor C1, coupled capacitor C2, anti-tampering electric capacity C3；
Resistance R11 one end in signal adaptation module 1 is connected with the output end in weighted resistance network and signal distribution module 2（R10
Ungrounded end）, the resistance R11 other end is connected with the positive pole of filter capacitor C1 positive pole and coupled capacitor C2, filter capacitor C1
Negative pole ground connection；The fixing end that coupled capacitor C2 negative pole adjusts potentiometer RV1 with electrocardio amplitude output signal is connected, electrocardio
Amplitude output signal regulation potentiometer RV1 another fixing end then connects with resistance to be grounded after R12 connects, electrocardio amplitude output signal
Adjust anti-tampering electric capacity C3 in parallel between potentiometer RV1 slider and ground, while connecting with resistance R13 one end；Resistance
The R13 other end is then connected with resistance R14, resistance R15；Resistance R13 and resistance R14 tie point access electrocardio left arm signal
Output end LA；Resistance R14 and resistance R15 tie point access electrocardio right leg drive signal output part RL；The resistance R15 other end
Ground connection is simultaneously as electrocardio right arm signal output part RA.
The signal for exporting weighted resistance network and signal distribution module 2 in signal adaptation module 1 filtered through RC after by electric capacity
Coupled to second resistance voltage-divider, altogether by signal attenuation about 48-68dB（Adjusted by RV1）, make the amplitude of R ripples in 1.5mV or so
And electrocardiosignal is exported in the form of LA, RA, RL（I, II, III lead can be used）.
The weighted resistance network and signal distribution module 2 include 4017 chip U1,4069 chip U4 (4069 U4:B、U4:
C), light emitting diode DR, diode D0-D9, resistance R0-R10, resistance R16, resistance R17, R ripple delivery outlet RW-OUT；
Weighted resistance network and the chips U1 of signal distribution module 2 16 pin are connect 555 in+5V, 8 pin ground connection, 14 pin and oscillation module 3
The chip U2 connection of 3 pin, U1 13 pin and 15 pin ground connection；U1 3,2,4,7,10,5,6,7,9,11 pin（Ten pin）Respectively with
Diode D0-D9 positive pole connection, wherein U1 10 pin also with U4:The B connection of 3 pin, U1 11 pin and signal control module 4
Middle electric capacity C8 is connected；U4:B 4 pin and U4:The negative pole connection of C 5 pin and light emitting diode DR；Chip U4 14 pin connect+
5V, 7 pin ground connection；Light emitting diode DR positive pole is then connected with resistance R17 and is followed by+5V power supplys；U4:C 6 pin are gone here and there with resistance R16
Connection is followed by R ripple delivery outlet RW-OUT, delivery outlet other end ground connection；Diode D0-D9 negative pole is respectively with resistance R0-R9's
One end connection, the resistance R0-R9 other end are connected to the ground through R10 again after linking together.
Weighted resistance network and signal distribution module 2 produce electrocardiosignal and the output of R ripples.The 20Hz letters that oscillation module 3 is exported
Number as U1 (4017) clock pulses input, U1 Q0-Q9 output ends is sequentially generated a series of high level pulses, respectively
Resistance R0-R9 is added to by diode D0-D9, the voltage in output resistance R10 common ports is determined.By to resistance parameter
Selection can be sequentially output P, Q, R, S, T, U waveform according to the sequence of the waveform of electrocardiosignal.Complete the waveform of a cycle
After output, Q9 outputs low level adds to signal control module 4 and controls its heart rate, light emitting diode（LED）DR may indicate that R ripples are believed
Number, R ripples can be exported by delivery outlet RW-OUT.
The oscillation module 3 includes 555 chip U2, chip U4 (4069 U4:A), resistance R18, resistance R19, electric capacity C4,
Electric capacity C5；
Oscillation module 3 produce 20Hz square-wave signals used for weighted resistance network and signal distribution module 2, while oscillator signal by
Signal control module 4 is controlled.
555 chip U2 8 pin connect+5V, 1 pin ground connection in oscillation module 3,5 foot meridian capacitor C4 are grounded, 4 pin meet chip U4:A
2 pin, chip U4:A 1 pin is connected with 3 pin of the chip U3 in signal control module 4；Chip U4 14 pin meet+5V, 7 pin and connect
Ground；Chip U2 2 pin are connected with 6 pin to be grounded through C5 again, while being also connected with the one of R19 one end, the R19 other end and R18
End is connected, while being connected on chip U2 7 pin；R18 another termination+5V；
The signal control module 4 includes 555 chip U3, diode D10, resistance R20, resistance R21, heart rate regulation potentiometer
RV2, electric capacity C6, electric capacity C7, electric capacity C8；
555 chip U3 8 pin connect+5V, 1 pin ground connection, 5 foot meridian capacitor C7 ground connection in signal control module 4；Chip U3 2 pin connect
Connect diode D10 positive pole, resistance R21 one end, electric capacity C8 one end；Diode D10 negative pole connects chip U3 4 pin, electricity
Hinder R21 another termination+5V, electric capacity C8 another termination weighted resistance network and the chips U1 of signal distribution module 2 11 pin；
555 chip U3 6 pin are connected with 7 pin to be grounded through electric capacity C6, while connecting resistance R20 one end；Resistance R20 another termination
A heart rate regulation potentiometer RV2 fixing end, heart rate regulation potentiometer RV2 another fixing end is connected with its slider
It is followed by+5V power supplys；
The power module 5 includes MAX1724EZK50 chips U5, boost inductance L1, filter condenser CP1, filter condenser
CP2, electric capacity C9-C16, power switch SW and battery BAT (18650), light emitting diode DP, resistance R22, diode D11, USB
Interface J1；
Battery BAT 18650 positive pole is connected with diode D11 negative pole in power module 5, at the same through switch SW respectively with electricity
Hold CP1 positive pole, chip U5 1 pin and 3 pin, inductance L1 one end to be connected；Diode D11 positive pole and the 1 of USB interface J1
Pin, light emitting diode DP positive pole connection, light emitting diode DP it is negative connected with resistance R22 after ground connection；The inductance L1 other end
It is connected with chip U5 5 pin, chip U5 4 pin and capacitor CP2 positive pole, capacitor C9-C12 positive pole, capacitor
C13-C16 one end connection, battery BAT negative pole, electric capacity CP1 negative pole, chip U5 2 pin, capacitor CP2 negative pole, electricity
Container C9-C12 negative pole, capacitor C13-C16 other end connection USB interface J1 4 pin link together (publicly).
Power module 5 can be by 18650 cell voltages（3.6V）5V is increased to power or power using USB interface（Simultaneously can
18650 batteries are charged）.
The present invention operation principle be：
20Hz square-wave signals are produced by oscillation module 3 first, U1 CLK ends are sent into, U1 (4017) is a pulse sequence hair
Raw device, 20Hz oscillator signal is the clock pulses input as the pulse sequence generator, make 4017 Q0-Q9 output ends according to
It is secondary to produce a series of high level pulses, added to after isolating through diode D0-D9 on the resistance R0-R9 of different resistances, and defeated
Go out on resistance R10 and determine the voltage of output common port.By to resistance parameter（Power）Selection can be according to electrocardiosignal
The sequence of waveform is sequentially output P, Q, R, S, T, U waveform.When Q9 is high level, signal control module 4 is set to produce one by C8
Individual single steady signal, into temporary stable state, the time is determined by RV2680K Ω variable resistor, so as to control pulse per minute
Number changes between 30 to 120.Each time during pulses generation, DR flashes once.After the waveform output of a cycle is completed, Q9
Export low level, the output low level of signal control module 4, through U4:After A is anti-phase, U4 4 pin are high level, continue to produce vibration
Signal triggering U2 produces the electrocardiosignal of a cycle, so circulation.R ripples (square wave) can be exported by delivery outlet RW-OUT.
Then, the signal exported weighted resistance network and signal distribution module 2 in signal adaptation module 1 is through RC（Resistance
R11, electric capacity C1）By electric capacity after filtering（C2）Coupled to second resistance voltage-divider, by signal attenuation about 48-68dB（Size is by RV1
Regulation）, make the amplitude of R ripples（It is conventional）In 1.5mV or so, and the output electrocardiosignal in the form of LA, RA, RL（Can using I, II,
III lead is measured）.
Power module 5 can be by 18650 cell voltage 3.6V by U5 (MAX1724EZK50 DC-DC boost switchings device)
It is increased to 5V and powers or use USB interface（18650 batteries can be charged simultaneously）Powered as the power supply of signal generator.
Fig. 8 is typical cardiac electrical figure waveform of the present invention；Wherein abscissa：Time, use electrocardiograph chart drive speed（25mm/s）
Represent, ordinate：Magnitude of voltage（1mV/10mm）.Figure is an electrocardiogram（ECG））Waveform,（P, Q, R, S, T, U ripple）Wherein：R ripples
72 beats/min of 2mV, heart rate.
The specific embodiment of the present invention is explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned reality
Example is applied, can also be on the premise of present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Various changes can be made.
Claims (4)
1. a kind of weighted resistor formula ECG signal generator, it is characterised in that：Including signal adaptation module（1）, weighted resistance network and
Signal distribution module（2）, oscillation module（3）, signal control module（4）, power module（5）；Power module（5）Respectively with power electricity
Hinder network and signal distribution module（2）, oscillation module（3）, signal control module（4）It is connected, signal control module（4）, shake
Swing module（3）, weighted resistance network and signal distribution module（2）, signal adaptation module（1）Sequentially it is connected successively；The power supply
Module（5）Cell voltage 3.6V is increased into 5V by boost switching device to be powered；
The signal control module（4）For a monostable timing device, trigger signal is by weighted resistance network and signal distribution module（2）
Provide；
The oscillation module（3）Produce square-wave signal and supply weighted resistance network and signal distribution module（2）Use, while vibrating letter
Number by signal control module（4）Controlled；
The weighted resistance network and signal distribution module（2）Produce electrocardiosignal and the output of R ripples；
The signal adaptation module（1）It is middle by weighted resistance network and signal distribution module（2）The signal of output filtered through RC after by
Second resistance voltage-divider is capacitively coupled to, altogether by signal attenuation about 48-68dB, and the output electrocardio letter in the form of LA, RA, RL
Number.
2. weighted resistor formula ECG signal generator according to claim 1, it is characterised in that：The signal adaptation module
（1）Including electrocardio left arm signal output part LA, electrocardio right arm signal output part RA, electrocardio right leg drive signal output part
RL；Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electrocardio amplitude output signal regulation potentiometer RV1, filtering
Electric capacity C1, coupled capacitor C2, anti-tampering electric capacity C3；
Signal adaptation module（1）In resistance R11 one end and weighted resistance network and signal distribution module（2）In output end connect
Connect, the resistance R11 other end is connected with the positive pole of filter capacitor C1 positive pole and coupled capacitor C2, and filter capacitor C1 negative pole connects
Ground；The fixing end that coupled capacitor C2 negative pole adjusts potentiometer RV1 with electrocardio amplitude output signal is connected, electrocardio output signal
Amplitude adjusted potentiometer RV1 another fixing end then connects with resistance and is grounded after R12 connects, electrocardio amplitude output signal regulation current potential
Anti-tampering electric capacity C3 in parallel between device RV1 slider and ground, while connecting with resistance R13 one end；Resistance R13's is another
Then connected with resistance R14, resistance R15 at end；Resistance R13 and resistance R14 tie point access electrocardio left arm signal output part LA；
Resistance R14 and resistance R15 tie point access electrocardio right leg drive signal output part RL；Resistance R15 other end ground connection is simultaneously
As electrocardio right arm signal output part RA.
3. weighted resistor formula ECG signal generator according to claim 1, it is characterised in that：The weighted resistance network and letter
Number distribute module（2）Including 4017 chip U1,4069 chip U4, light emitting diode DR, diode D0-D9, resistance R0-R10,
Resistance R16, resistance R17, R ripple delivery outlet RW-OUT；
Weighted resistance network and signal distribution module（2）Chips U1 16 pin connect+5V, 8 pin ground connection, 14 pin and oscillation module（3）
In 555 chip U2 3 pin connection, U1 13 pin and 15 pin ground connection；U1 3,2,4,7,10,5,6,7,9,11 pin respectively with two poles
Pipe D0-D9 positive pole connection, wherein U1 10 pin also with U4:The B connection of 3 pin, U1 11 pin and signal control module（4）In
Electric capacity C8 is connected；U4:B 4 pin and U4:The negative pole connection of C 5 pin and light emitting diode DR；Chip U4 14 pin connect+5V, 7
Pin is grounded；Light emitting diode DR positive pole is then connected with resistance R17 and is followed by+5V power supplys；U4:After C 6 pin are connected with resistance R16
It is connected to R ripple delivery outlet RW-OUT, delivery outlet other end ground connection；The one end of diode D0-D9 negative pole respectively with resistance R0-R9
Connection, the resistance R0-R9 other end are connected to the ground through R10 again after linking together.
4. weighted resistor formula ECG signal generator according to claim 1, it is characterised in that：The oscillation module（3）Bag
Include 555 chip U2,4069 chip U4:A, resistance R18, resistance R19, electric capacity C4, electric capacity C5；
Oscillation module（3）In 555 chip U2 8 pin connect+5V, 1 pin ground connection, 5 foot meridian capacitor C4 ground connection, 4 pin meet chip U4:The 2 of A
Pin, chip U4:A 1 pin and signal control module（4）In chip U3 3 pin connection；Chip U4 14 pin meet+5V, 7 pin and connect
Ground；Chip U2 2 pin are connected with 6 pin to be grounded through C5 again, while being also connected with the one of R19 one end, the R19 other end and R18
End is connected, while being connected on chip U2 7 pin；R18 another termination+5V；
The signal control module（4）Including 555 chip U3, diode D10, resistance R20, resistance R21, heart rate regulation potentiometer
RV2, electric capacity C6, electric capacity C7, electric capacity C8；
Signal control module（4）In 555 chip U3 8 pin connect+5V, 1 pin ground connection, 5 foot meridian capacitor C7 ground connection；Chip U3 2 pin
Connection diode D10 positive pole, resistance R21 one end, electric capacity C8 one end；Diode D10 negative pole connect chip U3 4 pin,
Resistance R21 another termination+5V, electric capacity C8 another termination weighted resistance network and signal distribution module（2）The 11 of chips U1
Pin；555 chip U3 6 pin are connected with 7 pin to be grounded through electric capacity C6, while connecting resistance R20 one end；Resistance R20's is another
Terminate a heart rate regulation potentiometer RV2 fixing end, heart rate regulation potentiometer RV2 another fixing end and its slider
It is connected and is followed by+5V power supplys；
The power module（5）Including MAX1724EZK50 chips U5, boost inductance L1, filter condenser CP1, filter condenser
CP2, electric capacity C9-C16, power switch SW and battery BAT, light emitting diode DP, resistance R22, diode D11, USB interface J1；
Power module（5）Middle battery BAT 18650 positive pole is connected with diode D11 negative pole, at the same through switch SW respectively with
Electric capacity CP1 positive pole, chip U5 1 pin and 3 pin, inductance L1 one end are connected；Diode D11 positive pole and the 1 of USB interface J1
Pin, light emitting diode DP positive pole connection, light emitting diode DP it is negative connected with resistance R22 after ground connection；The inductance L1 other end
It is connected with chip U5 5 pin, chip U5 4 pin and capacitor CP2 positive pole, capacitor C9-C12 positive pole, capacitor
C13-C16 one end connection, battery BAT negative pole, electric capacity CP1 negative pole, chip U5 2 pin, capacitor CP2 negative pole, electricity
Container C9-C12 negative pole, capacitor C13-C16 other end connection USB interface J1 4 pin link together.
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| CN201710284986.3A CN107046412B (en) | 2017-04-27 | 2017-04-27 | Weight resistance type electrocardiosignal generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710284986.3A CN107046412B (en) | 2017-04-27 | 2017-04-27 | Weight resistance type electrocardiosignal generator |
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| CN107046412A true CN107046412A (en) | 2017-08-15 |
| CN107046412B CN107046412B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710284986.3A Active CN107046412B (en) | 2017-04-27 | 2017-04-27 | Weight resistance type electrocardiosignal generator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2030394A (en) * | 1978-08-31 | 1980-04-02 | Valeron Corp | Electrocardiographic and Blood Pressure Waveform Simulator Device |
| CN203734635U (en) * | 2014-02-20 | 2014-07-23 | 西安科技大学 | Variable-bandwidth crystal filter for spectrum analyzer |
| CN204465153U (en) * | 2015-01-27 | 2015-07-08 | 江苏理工学院 | Power magnet coupled resonant type wireless power transfer in one |
| CN204744156U (en) * | 2015-07-17 | 2015-11-11 | 长春理工大学 | Guardianship device based on wireless biomedical sensing |
| CN205672027U (en) * | 2016-04-29 | 2016-11-09 | 上海夏先机电科技发展有限公司 | A kind of portable 12 lead electrocardiosignal synchronous acquisition device |
-
2017
- 2017-04-27 CN CN201710284986.3A patent/CN107046412B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2030394A (en) * | 1978-08-31 | 1980-04-02 | Valeron Corp | Electrocardiographic and Blood Pressure Waveform Simulator Device |
| CN203734635U (en) * | 2014-02-20 | 2014-07-23 | 西安科技大学 | Variable-bandwidth crystal filter for spectrum analyzer |
| CN204465153U (en) * | 2015-01-27 | 2015-07-08 | 江苏理工学院 | Power magnet coupled resonant type wireless power transfer in one |
| CN204744156U (en) * | 2015-07-17 | 2015-11-11 | 长春理工大学 | Guardianship device based on wireless biomedical sensing |
| CN205672027U (en) * | 2016-04-29 | 2016-11-09 | 上海夏先机电科技发展有限公司 | A kind of portable 12 lead electrocardiosignal synchronous acquisition device |
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| CN107046412B (en) | 2023-06-13 |
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