CN2707190Y - Digit type twelve leads provided electrocardiograh with pulse regulating and exciting function via esophagus - Google Patents
Digit type twelve leads provided electrocardiograh with pulse regulating and exciting function via esophagus Download PDFInfo
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- CN2707190Y CN2707190Y CN 200420011018 CN200420011018U CN2707190Y CN 2707190 Y CN2707190 Y CN 2707190Y CN 200420011018 CN200420011018 CN 200420011018 CN 200420011018 U CN200420011018 U CN 200420011018U CN 2707190 Y CN2707190 Y CN 2707190Y
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Abstract
The utility model relates to a digit type twelve tracks electrocardiograph with esophagus regulating pulsing and stimulating functions, and the digit type twelve tracks electrocardiograph can record standard twelve lead human body electrocardiac signals, can output an esophagus regulating pulsing and stimulating pulse, and can record esophagus electrocardiac signals. The digit type twelve tracks electrocardiograph comprises a microprocessor, a standard twelve lead electrocardiac amplifying circuit, an electrocardiac R wave perception circuit, an esophagus regulating pulsing and stimulating output circuit, a printing unit, a display unit, an acousto-optic alarm system, a control keyboard, a storage unit, a communication interface LAN, a real-time clock module, and a complete appliance electrical source. A modern large scale integrated circuit and MCU are adopted. The accuracy and the precision of stimulation are enhanced through a real-time monitoring twelve lead electrocardiogram, R wave perception, and software correction, which makes an esophagus regulating pulsing method more convenient, safer, and more reliable.
Description
[technical field]
This utility model belongs to the medical electronics field, relate in particular to a kind of can record standard 12 lead body surface electrocardiosignal, and exportable esophagus is transferred the diagnosis instrument for ventricle blood vessel of rich boost pulse and record esophagus electrocardiosignal.
[background technology]
Cardiovascular disease is one of principal disease that threatens human health.Electrocardiograph is mainly used in research of the diagnosis of cardiovascular disease such as arrhythmia and cardiac specific conduction system etc., be the most basic first-line diagnosis instrument of medical and health organization, be widely used in all types medical treatment hospital, outpatient service, clinic and type community medical sanitary mechanism.
It is one of indispensable important means in arrhythmia clinical diagnosis and the research that the esophagus heart is transferred rich the stimulation, in monitoring, when recorder body-centered electrograph carries out medical diagnosis on disease, clinical normal employing esophagus transfers rich the stimulation to bring out, duplicate arrhythmia, to reach the purpose of the actual patient's condition of diagnosis.When carrying out this generic operation, must send boost pulse by stimulation apparatus in addition, use electrocardiograph simultaneously and stimulate two kinds of instruments of instrument, this has brought very big inconvenience to clinicist's operation.And hospital wants to carry out the esophagus heart and transfers rich stimulating technology, just must buy electrocardiograph and stimulate two kinds of instruments of instrument, and this also makes the equipment purchase cost of hospital increase.
[summary of the invention]
The purpose of this utility model is to provide a kind of to be had the esophagus heart and transfers digital 12 of rich stimulatory function to lead electrocardiograph, this utility model can be gathered, handles, analyzes, shown, printing, storage standards 12 lead body surface ecg and single channel esophagus electrocardiosignal, realized the electrocardiosignal digitized, and can send multiple programmed electrical stimulation pulse and bring out and duplicate arrhythmia.Guarantee patient's safety for restriction to greatest extent owing to flow through the electric current of human body when touching high pressure, this utility model standard 12 lead electrocardio amplifying circuit has adopted the circuit of floating.
This utility model comprises microprocessor unit, standard 12 lead body surface ecg amplifying unit, ecg-r wave perception unit, rich output unit, print unit, 256 color LCD display unit/acoustooptic alarm systems, supervisory keyboard unit, memory element, communication interface (LAN), real-time clock module, the complete machine power supply of stimulating of esophagus accent.
The combinational circuit that the leads control line that leads joins the collection human body signal with human body.In the electrocardio amplifying circuit, at first carry out elementary low-pass filtering, the output of low-pass filter circuit inserts elementary amplifying circuit after the common mode inhibition adjustment, be connected with active 50Hz filter circuit then, the output of filter circuit connects back level amplifying circuit, the output of back level amplifying circuit is connected with the isolated amplifier of back again, inserts the A/D sample port of microprocessor at last.
Microprocessor unit is by real-time clock RTC, SDRAM, FLASH, nandFlash, LAN, EEPROM, compositions such as A/D conversion, communication interface, control logic.As the control core, gain, the time constant of microprocessor control ecg amplifier, carry out AD conversion, data analysis, Wave data storage, control stimulates kind and amplitude, perceptual sensitivity, sound and light alarm and demonstration and printing, understand keyboard coding, and by LAN interface and extraneous communication etc.
Microprocessor unit is connected with buffer circuit by I/O port 2, and output is amplified and stimulated in the isolation of control signal, and is connected with communication unit with memory element by this port.Keyboard, alarm unit, display unit, print unit are connected with the I/O port one of microprocessor unit through peripheral interface circuit, Keyboard Control by with the realization that is connected of the middle fracture INT1 of microprocessor.
The peripheral interface circuit of microprocessor comprises address bus and data/address bus and nanFLASH ROM, RAM, LAN interface chip, CPLD chip, real-time timepiece chip etc., and the control pin of each chip is connected on the I/O port one of microprocessor.
R ripple perception circuit inserts the INT0 port of microprocessor unit.Buffer circuit links to each other with power amplification, voltage amplification, current amplification circuit, inserts the boost pulse output circuit at last.By the control of microprocessor, R ripple perception circuit cooperates stimulates the boost pulse of output circuit output that the R ripple is carried out perception.
The outfan of isolated amplifier connects the input of perception circuit, and R ripple perception circuit is made up of amplifier, low pass filter, voltage comparator and monostable circuit.The perception circuit output end connects the microcontroller interrupting input end, and R ripple perception circuit carries out perception to the R ripple when stimulating output, to escape refractory stage, provides R ripple perceptual signal for microprocessor processes stimulates kind.Perceptual sensitivity can program controlly be regulated.
By selecting dissimilar stimulation modes, microprocessor is according to selecting and cooperating the perception of R ripple from the corresponding boost pulse of certain pin output.Boost pulse is connected with the input of power amplification circuit after isolating output, amplifies and boosts, and exports boost pulse through relay then.
Carry out the A/D conversion from the signal of ecg amplifier output by microprocessor, data are sent print control unit and LCD controller behind CPLD, by the demonstration and the printing of print control unit and liquid-crystal controller control waveform, simultaneously microprocessor unit carries out processing such as the measurement of waveform and analyzing and processing.In addition, lead come off signal, lack that paper detects, closing automatically etc. of cell voltage management and power supply also managed by microprocessor unit.Print control unit is accepted the order and the data of microprocessor unit, and the managing printing relief area produces motor and printhead control signal, finishes the printing of waveform and information.KBC produces keyboard scanning signal, finishes the anti-shake processing of button, produces keyboard-coding and keyboard interrupt signal, is handled by microprocessor unit.Liquid-crystal controller is accepted data and the order from microprocessor unit, finishes the demonstration of lead waveform and complete machine controlled state.Select the kind that stimulates by keyboard operation, microprocessor is according to R ripple perceptual signal, provide the boost pulse of corresponding kind from certain I/O port, and control in real time stimulates the voltage amplitude of output pulse.In order to guarantee safety, directly be connected at keyboard array moderate stimulation stop key with the interruptive port of microprocessor, guaranteeing to stop in the shortest time stimulates.In the R ripple perception circuit, the sensitivity of perception also can be regulated by keyboard array.
The complete machine power supply provides energy for amplifier, microprocessor unit, demonstration and printing, stimulation.The alternating current input is after broadband range high accuracy Switching Power Supply changes, be connected with charging circuit, export the DC voltage of one group of about 20V, for chargeable battery in the machine provides the charging of voltage stabilizing current-limiting type, simultaneously insert the alternating current-direct current commutation circuit, again through switching power supply regulator generations+5V and+24V main power source with battery output.
+ 5V supplies with the digital circuit of part on the spot, supplies with the LCD backlight generator through the copped wave generation+3.5V left and right sides, broadband voltage, through negative supply generator generation-20V voltage, for liquid crystal provides back bias voltage.
+ 24V supplies with print unit chart drive motor and printhead, and wherein chart drive motor is for transferring wide chopping way power supply.
The part power supply of floating ground is produced by Isolated Pulse Transformer through self-activated switch power supply by the output of alternating current-direct current commutation circuit.Generation-5V supplies with the analog circuit of part on the spot, and the digital circuit of floating ground part is required+and the 5V power supply is the direct voltage stabilizing output of Switching Power Supply.The analog circuit of floating ground part is required+12V and-12V voltage is that the non-voltage stabilizing output of Switching Power Supply produces through three terminal regulator.
This utility model is compared with prior art has following advantage:
1, electrocardiograph, esophagus electrocardiograph, esophagus are transferred the rich instrument that stimulates by modern microcomputer technology, utilized powerful little process chip to integrate, greatly facilitate doctor's use.
2, adopt Digital Signal Processing, to electrocardiosignal drift about inhibition, ac filter, myoelectricity filtering, and processing such as heart rate detection, guaranteed the verity and the reliability of signal processing by processor.
3, various abnormal electrocardiogram waveforms and esophagus ecg wave form demonstration/record are undistorted; Printablely go out complete audit report clearly, can be used as standard twelve-lead electrocardiogram machine and use.
4, the multiple isolating means of utilization between standard cardioelectric collecting unit, amplifying unit and the microprocessor unit is guaranteed safe handling;
5, directly extract the standard lead signal to the perception circuit from the electrocardio amplifying unit, further having improved stimulates the accuracy of providing.
6, have routine electrocardiogram parameter measurement, automatic analytic function, alleviated clinician's burden.
7, adopt accurate focus battle array mode to write down ecg wave form, it is clear accurately to trace waveform, and the literal note is abundant, and various labellings are complete, are convenient to clinical diagnosis and research.
8, adopting width is that 210mm high speed heat sensitive recording chart is traced electrocardiogram, 12 lead synchronous acquisition and record, and efficient height, effective during the clinical examination electrocardiogram, and economical and practical.
9, can directly connect the external hanging type memory device, long-time, high capacity ground storage case information.
10, abnormal electrocardiographic pattern triggers storage in the machine automatically, and the shape information of 5s makes things convenient for doctor's analysis before and after the storage abnormal electrocardiographic pattern.
11, acoustooptic alarm system in time comes off to leading, fatal problems such as anomalous ecg, power supply mistake report to the police, and has further improved the safety of operation.
12, have the AC/DC powering mode, special charging battery, battery charger and perfect battery management and protection system are installed in the machine.
This utility model adopts modern large scale integrated circuit and MCU, proofreaies and correct by real-time monitoring twelve-lead electrocardiogram, the perception of R ripple and software and improves accuracy and the precision that stimulates, and makes esophagus transfer rich art convenient, safe, reliable.
[description of drawings]
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is standard 12 lead electrocardio preamplifying circuit figure of the present utility model;
Fig. 3 is a level amplification circuit diagram behind the standard 12 lead electrocardio of the present utility model;
Fig. 4 is that esophagus of the present utility model is transferred rich stimulation circuit figure;
Fig. 5 is a R ripple perception circuit diagram of the present utility model;
Fig. 6 is power principle figure of the present utility model;
Fig. 7 is the peripheral main interface principle figure of microprocessor of the present utility model;
[specific embodiment]
As shown in Figure 1, this utility model comprises microprocessor unit, standard 12 lead body surface ecg amplifying unit, ecg-r wave perception unit, rich output unit, print unit, 256 color LCD display unit/acoustooptic alarm systems, supervisory keyboard unit, memory element, communication interface (LAN), real-time clock module, the complete machine power supply of stimulating of esophagus accent.
The combinational circuit that the leads control line that leads joins the collection human body signal with human body.In the electrocardio amplifying circuit, at first carry out elementary low-pass filtering, the output of low-pass filter circuit inserts elementary amplifying circuit after the common mode inhibition adjustment, be connected with active 50Hz filter circuit then, the output of filter circuit connects back level amplifying circuit, the output of back level amplifying circuit is connected with the isolated amplifier of back again, inserts the A/D sample port of microprocessor at last.
Microprocessor unit is by real-time clock RTC, SDRAM, FLASH, nandFlash, LAN, EEPROM, compositions such as A/D conversion, communication interface, control logic.As the control core, gain, the time constant of microprocessor control ecg amplifier, carry out AD conversion, data analysis, Wave data storage, control stimulates kind and amplitude, perceptual sensitivity, sound and light alarm and demonstration and printing, understand keyboard coding, and by LAN interface and extraneous communication etc.
Microprocessor unit is connected with buffer circuit by I/O port 2, and output is amplified and stimulated in the isolation of control signal, and is connected with communication unit with memory element by this port.Keyboard, alarm unit, display unit, print unit are connected with the I/O port one of microprocessor unit through peripheral interface circuit, Keyboard Control by with the realization that is connected of INT1.
The peripheral interface circuit of microprocessor comprises address bus and data/address bus and nanFLASH ROM, RAM, LAN interface chip, CPLD chip, real-time timepiece chip etc., and the control pin of each chip is connected on the I/O port one of microprocessor.
R ripple perception circuit inserts the INT0 port of microprocessor unit.Buffer circuit links to each other with power amplification, voltage amplification, current amplification circuit, inserts the boost pulse output circuit at last.By the control of microprocessor, R ripple perception circuit cooperates stimulates the boost pulse of output circuit output that the R ripple is carried out perception.
The outfan of isolated amplifier connects the input of perception circuit, and R ripple perception circuit is made up of amplifier, low pass filter, voltage comparator and monostable circuit.The perception circuit output end connects the microcontroller interrupting input end, and R ripple perception circuit carries out perception to the R ripple when stimulating output, to escape refractory stage, provides R ripple perceptual signal for microprocessor processes stimulates kind.Perceptual sensitivity can program controlly be regulated.
By selecting dissimilar stimulation modes, microprocessor is according to selecting and cooperating the perception of R ripple from the corresponding boost pulse of certain pin output.Boost pulse is connected with the input of power amplification circuit after isolating output, amplifies and boosts, and exports boost pulse through relay then.
Carry out the A/D conversion from the signal of ecg amplifier output by microprocessor, data are sent print control unit and LCD controller behind CPLD, by the demonstration and the printing of print control unit and liquid-crystal controller control waveform, simultaneously microprocessor unit carries out processing such as the measurement of waveform and analyzing and processing.In addition, lead come off signal, lack that paper detects, closing automatically etc. of cell voltage management and power supply also managed by microprocessor unit.Print control unit is accepted the order and the data of microprocessor unit, and the managing printing relief area produces motor and printhead control signal, finishes the printing of waveform and information.KBC produces keyboard scanning signal, finishes the anti-shake processing of button, produces keyboard-coding and keyboard interrupt signal, is handled by microprocessor unit.Liquid-crystal controller is accepted data and the order from microprocessor unit, finishes the demonstration of lead waveform and complete machine controlled state.Select the kind that stimulates by keyboard operation, microprocessor is according to R ripple perceptual signal, provide the boost pulse of corresponding kind from certain I/O port, and control in real time stimulates the voltage amplitude of output pulse.In order to guarantee safety, directly be connected at keyboard array moderate stimulation stop key with the interruptive port of microprocessor, guaranteeing to stop in the shortest time stimulates.In the R ripple perception circuit, the sensitivity of perception also can be regulated by keyboard array.
The complete machine power supply provides energy for amplifier, microprocessor unit, demonstration and printing, stimulation.The alternating current input is after broadband range high accuracy Switching Power Supply changes, be connected with charging circuit, export the DC voltage of one group of about 20V, for chargeable battery in the machine provides the charging of voltage stabilizing current-limiting type, simultaneously insert the alternating current-direct current commutation circuit, again through switching power supply regulator generations+5V and+24V main power source with battery output.
+ 5V supplies with the digital circuit of part on the spot, supplies with the LCD backlight generator through the copped wave generation+3.5V left and right sides, broadband voltage, through negative supply generator generation-20V voltage, for liquid crystal provides back bias voltage.
+ 24V supplies with print unit chart drive motor and printhead, and wherein chart drive motor is for transferring wide chopping way power supply.
The part power supply of floating ground is produced by Isolated Pulse Transformer through self-activated switch power supply by the output of alternating current-direct current commutation circuit.Generation-5V supplies with the analog circuit of part on the spot, and the digital circuit of floating ground part is required+and the 5V power supply is the direct voltage stabilizing output of Switching Power Supply.The analog circuit of floating ground part is required+12V and-12V voltage is that the non-voltage stabilizing output of Switching Power Supply produces through three terminal regulator.
As shown in Figure 2, in the electrocardio preamplifying circuit, the end points 1-9 of connector CZ601 is connected with buffer circuit respectively, the end points 10 of CZ601 inserts ground through resistance R 601, buffer circuit is made up of 9 identical circuit, wherein, in buffer circuit, resistance R 101 respectively with diode D101, D102 connects, also be connected with the input 5 of amplifier U101A simultaneously, constitute No. one buffer circuit, the outfan 7 of amplifier U101A connects with 3 ends of the amplifier U201 of thereafter the corresponding part of standard cardioelectric amplifying circuit, electrocardiosignal can be input to the standard cardioelectric amplifying circuit, and lead signal with difference modes formation standard I; Other 8 buffer circuit structure annexations are identical with above-mentioned annexation, resistance R 110～R112 and amplifier U105B constitute a follower, amplifier U101A, the outfan of U101B and U102A is respectively through resistance R 110, R111 is connected with 3 ends of amplifier U105B with R112, simultaneously with drive screened circuit in 3 ends of amplifier U106 be connected, the outfan 1 of amplifier U105B inserts 2 ends of the amplifier U201 in the standard cardioelectric amplifying circuit, amplifier U106, diode D119～D120, resistance R 113～R114, capacitor C 110～C111 and inductance L 101 common formations drive screened circuit, drive screened circuit and be connected, drive shielding and suppress that power frequency is disturbed and the myoelectricity interference for the line that leads provides through the lead TO end of screen layer of inductance L 101 and connector CZ601.
As shown in Figure 3, behind electrocardio the level amplifying circuit in, form by 8 groups of identical amplifying circuits, wherein in each amplifying circuit by preamplifying circuit, active 50Hz filter circuit, high low-pass filter circuit, back level amplification buffer circuit, the secondary low-pass filter circuit is formed, preamplifying circuit is by resistance R 201, R202, R216, R217, R203, variable resistance W201, capacitor C 201, amplifier U201 forms, wherein the outfan 6 of amplifier U201 is connected with active 50Hz filter circuit, common mode rejection ratio is regulated by variable resistance W201, active 50Hz filter circuit is by resistance R 204～R209, capacitor C 202～C205 and amplifier U202 constitute, being used to suppress power frequency disturbs, the outfan 6 of amplifier U202 is through resistance R 210 and by resistance R 210～R213, diode D201～D202, E201～E202 is connected the positive and negative terminal 3 and 2 of the amplifier U203 that inserts back level amplifying circuit afterwards with the high low-pass filter circuit that capacitor C 206 constitutes, back level amplifying circuit by amplifier U203 and the resistance R 214 that is used to control amplification form, the outfan 6 of amplifier U203 is connected with 15 ends of the amplifier U204 of the back level signal isolation circuit of back, back level buffer circuit is made of capacitor C A201～CA204 and amplifier U204,9 of amplifier U204,10 termination positive-negative powers, 8 end ground connection, outfan 7 is connected with resistance R 215, capacitor C 208 and resistance R 215 constitute the secondary low-pass filter circuit, filtered signal enters the AD port that CPU element provides by the public connecting end output of resistance R 215 and capacitor C 208.
As shown in Figure 4; transfer in the rich stimulation circuit at esophagus; the I/O mouth output port of CPU is connected with the input of audion Q301; enter the input of Q301 by the boost pulse of the I/O mouth of CPU output; the output of audion Q301 emitter-base bandgap grading is connected with the light idol U301 of buffer circuit; the outfan of U301 inserts 3 ends of digital regulation resistance U302; digital regulation resistance inserts the power amplification circuit that audion Q302 ~ Q306 constitutes; then through relay J D301 and U304; U305 connects; with U306 is the holding circuit control relay JD301 of core; 7 of microprocessor I/O port and potentiometer U302; 1; 2 ends join; export control signal GPC0 respectively; GPC1; the GPC2 signal, control potentiometer U302.
As shown in Figure 5, in R ripple perception circuit, the outfan of ecg amplifier isolating chip is connected with the capacitor C 401 of R ripple perception circuit, R ripple perception circuit is by high pass filter, amplifying circuit, active filter circuit, waveform shaping circuit, voltage comparator, monostable shaping circuit and analog switch are formed, high pass filter is made of capacitor C 401 and resistance R 401, the input 3 of amplifier U401A is connected with 2 in its outfan and the amplifying circuit, amplifying circuit is by resistance R 402, R403 and amplifier U401A form, the outfan 1 of amplifier U401A is connected with the resistance R 404 of active 50Hz filter circuit, active 50Hz filter circuit is by resistance R 404, R405, R407, R408 and capacitor C 402, C403, C404, C405 and amplifier U401B, resistance W401 constitutes jointly, the outfan 7 of amplifier U401B is connected with thereafter waveform shaping circuit through resistance R 409 in the filter circuit, waveform shaping circuit is by resistance R 409, R410, R411, R412, R413, R414, R415, diode D401 ~ D404 and amplifier U402, U403A constitutes, shaping circuit is connected with thereafter voltage comparator through the input 2 of analog switch U404A and amplifier U405A, voltage comparator is by resistance R 416, R417, R418, R419, R420, R421, capacitor C 406 and amplifier U403B, U405A constitutes, voltage comparator is by resistance R 421 and with amplifier U406A, U406B is that the monostable shaping circuit of core connects, the monostable shaping circuit is used for the R ripple is shaped as the pulse of Transistor-Transistor Logic level, amplifier U406 output signal is exported through FEEL OUT port, enter the interruptive port of microprocessor, drive buzzer and light emitting diode simultaneously, indication R ripple.
As shown in Figure 6, total power switch K switch 601 is connected with transformator B601.When K switch 602 and K603 placed the AC shelves, alternating current linked to each other with mu balanced circuit ZL601, amplifier U601, uses for complete machine from connector CZ602 output voltage.The output of mu balanced circuit simultaneously is connected with the DC-DC changer, and the DC-DC changer is made up of audion Q609, transformator B602, B603, diode D610 and D611, amplifier U604 and U605.Its output termination CZ602 is the complete machine power supply.Amplifier U602A and audion Q608 form fixed amplitude circuit, and the colelctor electrode of process R633 and Q608 is connected with the primary coil of transformator B602 and B603, and the oscillating impulse required to agitator carries out fixed ampllitude, improve voltage regulation result.
When K switch 602 and K603 place the DC shelves, exchange input pull-down, cell voltage send complete machine to use by K switch 603.When using direct current, the work of energy content of battery indicating circuit.Energy content of battery indicating circuit is made of metal-oxide-semiconductor T601, diode D604, amplifier U602, audion Q601, diode D602.Cell voltage connects and composes the constant current voltage stabilizing through K switch 603 and metal-oxide-semiconductor T601, diode D604, output is connected with the voltage comparator that is made of variable resistance RW602, amplifier U602D through resistance R 603, the output of voltage comparator is connected with resistance R 606, in the agitator that control is made up of capacitor C 605, resistance R 608 and R609, amplifier U602C, the output of agitator is connected with resistance R 610, by what of audion Q601, diode D602 pilot cell electric weight.
When K switch 602 and K603 placed the CHG shelves, the DC voltage behind the AC rectification was connected with charging circuit through K switch 602.Charging circuit constitutes serial regulating circuit by audion Q603～Q606, diode D606, resistance R 623～R629, variable resistance RW603, is battery charge.
As shown in Figure 7, in the main peripheral interface circuit of microprocessor, the address bus of microprocessor and data/address bus, respectively with nanFLASH ROM, RAM, the LAN interface chip, the CPLD chip, the data and address bus of real-time timepiece chip connects, the control pin of each chip is connected on the I/O port of microprocessor, the output of " stimulation stops " key and R ripple perception circuit is connected with two interruptive ports of microprocessor respectively in the keyboard array, the A/D port of the output of body surface ecg amplifying circuit and microprocessor is connected, boost pulse is from the I/O port output of microprocessor, control signal CS2, INC, U/C is connected with digital regulation resistance respectively, is used to control the watt level of boost pulse.
Claims (6)
1, a kind of digital 12 road electrocardiographs with esophageal pulsation modulation stimulatory function, comprise microprocessor, standard 12 lead body surface ecg amplifying circuit, ecg-r wave perception circuit, rich output circuit, print unit, display unit, acoustooptic alarm system, supervisory keyboard, memory element, communication interface LAN, real-time clock module, the complete machine power supply of stimulating of esophagus accent, it is characterized in that:
A, the combinational circuit that the leads control line that leads joins with human body, gathers human body signal, and the combinational circuit that leads output is connected with the input of electrocardio amplifying circuit,
B, in the electrocardio amplifying circuit, at first carry out elementary low-pass filtering, the output of low-pass filter circuit inserts elementary amplifying circuit after the common mode inhibition adjustment, be connected with active 50Hz filter circuit then, the output of filter circuit connects back level amplifying circuit, the output of back level amplifying circuit is connected with the isolated amplifier of back again, inserts the A/D sample port of microprocessor at last
C, microprocessor is by real-time clock RTC, SDRAM, FLASH, nandFlash, LAN, EEPROM, the A/D conversion, communication interface, control logic is formed, the gain of microprocessor control ecg amplifier, time constant, carry out the AD conversion, data analysis, the Wave data storage, control stimulates kind and amplitude, perceptual sensitivity, sound and light alarm and demonstration and printing, understand keyboard coding, and by LAN interface and extraneous communication, microprocessor is connected with buffer circuit by I/O port 2, output is amplified and is stimulated in the isolation of control signal, and be connected with communication unit with memory element by this port, keyboard, warning system, display unit, print unit is connected with the I/O port one of microprocessor through peripheral interface circuit, keyboard is connected with the middle fracture INT1 of microprocessor
D, the peripheral interface circuit of microprocessor comprises address bus and data/address bus and nanFLASH ROM, RAM, the LAN interface chip, the CPLD chip, real-time timepiece chip, the control pin of each chip is connected on the I/O port one of microprocessor, R ripple perception circuit inserts the INTO port of microprocessor unit, buffer circuit and power amplification, voltage amplification, current amplification circuit links to each other, insert the boost pulse output circuit at last, the outfan of isolated amplifier connects the input of perception circuit, R ripple perception circuit is by amplifier, low pass filter, voltage comparator and monostable circuit are formed, and the perception circuit output end connects the microcontroller interrupting input end.
2, a kind of digital 12 road electrocardiographs according to claim 1 with esophageal pulsation modulation stimulatory function, it is characterized in that: in the electrocardio preamplifying circuit, the end points 1-9 of connector CZ601 is connected with buffer circuit respectively, the end points 10 of CZ601 inserts ground through resistance R 601, buffer circuit is made up of 9 identical circuit, wherein, in buffer circuit, resistance R 101 respectively with diode D101, D102 connects, also be connected simultaneously with the input 5 of amplifier U101A, constitute No. one buffer circuit, the outfan 7 of amplifier U101A connects with 3 ends of the amplifier U201 of thereafter the corresponding part of standard cardioelectric amplifying circuit, electrocardiosignal can be input to the standard cardioelectric amplifying circuit, and form standard I with difference modes and lead signal, other 8 buffer circuit structure annexations are identical with above-mentioned annexation, resistance R 110～R112 and amplifier U105B constitute a follower, amplifier U101A, the outfan of U101B and U102A is respectively through resistance R 110, R111 is connected with 3 ends of amplifier U105B with R112, simultaneously with drive screened circuit in 3 ends of amplifier U106 be connected, the outfan 1 of amplifier U105B inserts 2 ends of the amplifier U201 in the standard cardioelectric amplifying circuit, amplifier U106, diode D119～D120, resistance R 113～R114, capacitor C 110～C111 and inductance L 101 be common to be constituted and drives screened circuits, drives screened circuit and holds and be connected through the lead TO of screen layer of inductance L 101 and connector CZ601.
3, a kind of digital 12 road electrocardiographs according to claim 1 with esophageal pulsation modulation stimulatory function, it is characterized in that: in the standard cardioelectric amplifying circuit, form by 8 groups of identical amplifying circuits, wherein in each amplifying circuit by preamplifying circuit, active 50Hz filter circuit, high low-pass filter circuit, back level amplification buffer circuit, the secondary low-pass filter circuit is formed, preamplifying circuit is by resistance R 201, R202, R216, R217, R203, variable resistance W201, capacitor C 201, amplifier U201 forms, wherein the outfan 6 of amplifier U201 is connected with active 50Hz filter circuit, common mode rejection ratio is regulated by variable resistance W201, active 50Hz filter circuit is by resistance R 204～R209, capacitor C 202～C205 and amplifier U202 constitute, being used to suppress power frequency disturbs, the outfan 6 of amplifier U202 is through resistance R 210 and by resistance R 210～R213, diode D201～D202, electrochemical capacitor E201～E202 is connected the positive and negative terminal 3 and 2 of the amplifier U203 that inserts back level amplifying circuit afterwards with the high low-pass filter circuit that capacitor C 206 constitutes, back level amplifying circuit by amplifier U203 and the resistance R 214 that is used to control amplification form, the outfan 6 of amplifier U203 is connected with 15 ends of the amplifier U204 of the back level signal isolation circuit of back, back level buffer circuit is made of capacitor C A201～CA204 and amplifier U204,9 of amplifier U204,10 termination positive-negative powers, 8 end ground connection, outfan 7 is connected with resistance R 215, capacitor C 208 and resistance R 215 constitute the secondary low-pass filter circuit, filtered signal enters the AD port that CPU element provides by the public connecting end output of resistance R 215 and capacitor C 208.
4; a kind of digital 12 road electrocardiographs according to claim 1 with esophageal pulsation modulation stimulatory function; it is characterized in that: in the boost pulse output circuit; the I/O mouth output port of CPU is connected with the input of audion Q301; enter the input of Q301 by the boost pulse of the I/O mouth of CPU output; the output of audion Q301 emitter-base bandgap grading is connected with the light idol U301 of buffer circuit; the outfan of U301 inserts 3 ends of digital regulation resistance U302; digital regulation resistance inserts the power amplification circuit that audion Q302 ~ Q306 constitutes; then through relay J D301 and relay U304; U305 connects; with amplifier U306 is the holding circuit control relay JD301 of core; 7 of microprocessor I/O port and potentiometer U302; 1; 2 ends join; export control signal GPC0 respectively; GPC1; the GPC2 signal, control potentiometer U302.
5, a kind of digital 12 road electrocardiographs according to claim 1 with esophageal pulsation modulation stimulatory function, it is characterized in that: in R ripple perception circuit, the outfan of ecg amplifier isolating chip is connected with the capacitor C 401 of R ripple perception circuit, R ripple perception circuit is by high pass filter, amplifying circuit, active filter circuit, waveform shaping circuit, voltage comparator, monostable shaping circuit and analog switch are formed, high pass filter is made of capacitor C 401 and resistance R 401, the input 3 of amplifier U401A is connected with 2 in its outfan and the amplifying circuit, amplifying circuit is by resistance R 402, R403 and amplifier U401A form, the outfan 1 of amplifier U401A is connected with the resistance R 404 of active 50Hz filter circuit, active 50Hz filter circuit is by resistance R 404, R405, R407, R408 and capacitor C 402, C403, C404, C405 and amplifier U401B, resistance W401 constitutes jointly, the outfan 7 of amplifier U401B is connected with thereafter waveform shaping circuit through resistance R 409 in the filter circuit, waveform shaping circuit is by resistance R 409, R410, R411, R412, R413, R414, R415, diode D401 ~ D404 and amplifier U402, U403A constitutes, shaping circuit is connected with thereafter voltage comparator through the input 2 of analog switch U404A and amplifier U405A, voltage comparator is by resistance R 416, R417, R418, R419, R420, R421, capacitor C 406 and amplifier U403B, U405A constitutes, voltage comparator is by resistance R 421 and with amplifier U406A, U406B is that the monostable shaping circuit of core connects, the monostable shaping circuit is used for the R ripple is shaped as the pulse of Transistor-Transistor Logic level, amplifier U406 output signal is exported through FEEL OUT port, enter the interruptive port of microprocessor, drive buzzer and light emitting diode simultaneously, indication R ripple.
6, a kind of digital 12 road electrocardiographs according to claim 1 with esophageal pulsation modulation stimulatory function, it is characterized in that: in the main peripheral interface circuit of microprocessor, the address bus of microprocessor and data/address bus, respectively with nanFLASH ROM, RAM, the LAN interface chip, the CPLD chip, the data and address bus of real-time timepiece chip connects, the control pin of each chip is connected on the I/O port of microprocessor, the output of " stimulation stops " key and R ripple perception circuit is connected with two interruptive ports of microprocessor respectively in the keyboard array, the A/D port of the output of body surface ecg amplifying circuit and microprocessor is connected, boost pulse is from the I/O port output of microprocessor, control signal CS2, INC, U/C is connected with digital regulation resistance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011018 CN2707190Y (en) | 2004-06-11 | 2004-06-11 | Digit type twelve leads provided electrocardiograh with pulse regulating and exciting function via esophagus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420011018 CN2707190Y (en) | 2004-06-11 | 2004-06-11 | Digit type twelve leads provided electrocardiograh with pulse regulating and exciting function via esophagus |
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| Publication Number | Publication Date |
|---|---|
| CN2707190Y true CN2707190Y (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420011018 Expired - Fee Related CN2707190Y (en) | 2004-06-11 | 2004-06-11 | Digit type twelve leads provided electrocardiograh with pulse regulating and exciting function via esophagus |
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| Country | Link |
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| CN (1) | CN2707190Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579034A (en) * | 2012-02-28 | 2012-07-18 | 卢才义 | Positioning device for atrioventricular accessory pathway and atrial arrhythmia |
-
2004
- 2004-06-11 CN CN 200420011018 patent/CN2707190Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579034A (en) * | 2012-02-28 | 2012-07-18 | 卢才义 | Positioning device for atrioventricular accessory pathway and atrial arrhythmia |
| CN102579034B (en) * | 2012-02-28 | 2013-12-11 | 中国人民解放军总医院 | Positioning device for atrioventricular accessory pathway and atrial arrhythmia |
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Granted publication date: 20050706 Termination date: 20130611 |