CN113171108A - An ECG Monitor Using Dynamic Difference Algorithm - Google Patents

An ECG Monitor Using Dynamic Difference Algorithm Download PDF

Info

Publication number
CN113171108A
CN113171108A CN202110454727.7A CN202110454727A CN113171108A CN 113171108 A CN113171108 A CN 113171108A CN 202110454727 A CN202110454727 A CN 202110454727A CN 113171108 A CN113171108 A CN 113171108A
Authority
CN
China
Prior art keywords
circuit
detection circuit
converter
monitor
paper electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110454727.7A
Other languages
Chinese (zh)
Inventor
赵雪成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuzhou Yongkang Electronic Science & Technology Co ltd
Original Assignee
Xuzhou Yongkang Electronic Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xuzhou Yongkang Electronic Science & Technology Co ltd filed Critical Xuzhou Yongkang Electronic Science & Technology Co ltd
Priority to CN202110454727.7A priority Critical patent/CN113171108A/en
Publication of CN113171108A publication Critical patent/CN113171108A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Psychiatry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Biophysics (AREA)
  • Artificial Intelligence (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

The invention discloses an ECG monitor adopting a dynamic differential algorithm, which comprises a paper electrode, an analog amplification module and a singlechip digital module, wherein the analog amplification module is connected with the paper electrode and comprises a preposed instrument amplification circuit, a driving shielding circuit, a middle main amplification filter circuit, a QRS wave detection circuit and a lead falling detection circuit, and the driving shielding circuit is used for inhibiting electrostatic coupling interference caused by distributed capacitance.

Description

ECG monitor adopting dynamic differential algorithm
Technical Field
The invention relates to the field of medical instruments, in particular to an electrocardiogram monitor adopting a dynamic differential algorithm.
Background
The ECG monitor is a monitoring device widely used in medical treatment, the portable ECG monitor is powered by a battery, the electric quantity storage is smaller than that of a desk-top ECG monitor, the power consumption of a detection system of the desk-top ECG monitor is large compared with that of the desk-top ECG monitor, the portable ECG monitor needs to be changed on the detection system, the electric quantity consumption is optimized, the single mode of the existing portable ECG monitor is universal, the establishment of a medical Internet of things system is not facilitated, the information exchange with a server and a mobile phone terminal can not be realized, and the possibility of generating missed detection exists in a QRS wave detection circuit.
Disclosure of Invention
Aiming at the technical problem, the invention provides an ECG monitor adopting a dynamic differential algorithm,
the method comprises the following steps:
the paper electrode, with analog amplification module and singlechip digital module that the paper electrode is connected, analog amplification module includes leading instrument amplifier circuit, drive shielding circuit, middle main amplification filter circuit, QRS ripples detection circuit and leads and drops detection circuit, drive shielding circuit is used for suppressing the electrostatic coupling interference that distributed capacitance arouses, singlechip digital module include sample hold circuit, AD converter, flash memory, display alarm unit, power control circuit and key control circuit, display alarm unit includes display circuit and sound alarm circuit, the paper electrode is from moist paper electrode, the AD converter adopts 10 bit 8 way AD converter, the sampling frequency of AD converter sets up to 2.5ms timing trigger, the AD converter does the type frequency division processing of a sampling clock at the software level, every 0.5s starts the detection circuitry that drops of leading carries out the judgement that drops of leading once, audible alarm circuit is connected with an outside bee calling organ, outside bee calling organ and button control circuit all are equipped with the soft timer, the soft timer is used for controlling the delay response time of button control circuit and the operating time of outside bee calling organ, flash memory includes data reading and data storage, a server is connected to flash memory, storage information includes the monitor state in the data storage, the monitor state includes last shutdown time, does not send the originated sequence number and the length of electrocardio data section.
Preferably, the display alarm unit adopts an LCD liquid crystal panel to realize human-computer interaction.
Preferably, the flash memory is connected with a GPRS unit.
Preferably, the operational amplifier U1A and the diode D1 in the QRS wave detection circuit form a full-wave rectifier, U1B and U1D form two peak detection circuits with different time peaks, the discharge loop time constants of the U1B peak detection circuit and the U1D peak detection circuit are 0.33s and 3.5s respectively, the circuit includes a resistor R11 and a resistor R12, and the resistor R11 and the resistor R12 are used for voltage division.
Has the advantages that:
1. the invention adopts a soft timing method, ensures the normal operation of sampling conversion and simultaneously meets the timing operation in front-end application.
2. Compared with the traditional automatic threshold value circuit, the QRS wave detection circuit adopting the dynamic difference algorithm avoids the difficulty of threshold value setting.
3. The power control circuit is added to cut off the power of the circuit which does not work at ordinary times, so that the idle nodes on the single chip microcomputer are fully utilized for storing data with large power consumption, and the average working current of the single chip microcomputer is further reduced.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall mechanism of an embodiment of the present invention;
fig. 2 is a diagram of a QRS wave detection circuit of the present invention.
The figures in the drawings represent:
1. the device comprises a paper electrode 2, a preposed instrument amplifying circuit 3, a lead falling detection circuit 4, a single chip microcomputer digital module 5, a QRS wave detection circuit 6, a key control circuit 7, a flash memory 8, a driving shielding circuit 9, a middle main amplifying and filtering circuit 10, a server 11, a GPRS unit 12, a display alarm unit 13 and a power supply control circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the present invention includes a paper electrode, an analog amplification module connected with the paper electrode, and a digital module of a single chip microcomputer, wherein the analog amplification module includes a preposed instrument amplification circuit, a driving shielding circuit, a middle main amplification filter circuit, a QRS wave detection circuit, and a lead fall-off detection circuit, the driving shielding circuit is used to suppress electrostatic coupling interference caused by distributed capacitance, the digital module of the single chip microcomputer includes a sample-and-hold circuit, an a/D converter, a flash memory, a display alarm unit, a power control circuit, and a key control circuit, the display alarm unit includes a display circuit and an audio alarm circuit, the paper electrode is a self-wetting paper electrode, the a/D converter adopts a 10-bit 8-way a/D converter, the sampling frequency of the a/D converter is set to 2.5ms timing trigger, the A/D converter is at the software level and is made the class frequency division processing of a sampling clock, starts every 0.5s the detection circuit that drops of leading carries out the judgement that drops of leading once, audible alarm circuit is connected with an outside bee calling organ, outside bee calling organ and button control circuit all are equipped with the soft timer, the soft timer is used for control button control circuit's delay response time and the operating time of outside bee calling organ, flash memory includes data reading and data storage, a server is connected to flash memory, storage information includes the monitor state in the data storage, the monitor state includes last shutdown time, does not send the initial sequence number and the length of electrocardio data section.
The display alarm unit adopts an LCD liquid crystal panel to realize man-machine interaction, the flash memory is connected with a GPRS unit, an operational amplifier U1A and a diode D1 in the QRS wave detection circuit form a full-wave rectifier, U1B and U1D form two peak detection circuits with unequal time peaks, the time constants of discharge loops of the U1B peak detection circuit and the U1D peak detection circuit are respectively 0.33s and 3.5s, a resistor R11 and a resistor R12 are arranged in the circuits, and the resistor R11 and the resistor R12 are used for voltage division.
The QRS wave detection circuit in the existing ECG monitor has defects, in order to effectively inhibit signals such as electromyographic interference and the like and eliminate baseline drift caused by respiration, a mode of reducing P waves and T waves is adopted, so that fundamental waves and second harmonics are highlighted, initial electrocardiosignals are often selected and filtered, the filtered electrocardiosignals are in a multi-peak wave group form, and thus the setting of an automatic threshold value is difficult, on one hand, when the threshold value setting is higher, the output of one QRS wave group generates one jump, liquid leakage is easy to generate when the variation amplitude of the electrocardiosignals is large, such as the ventricular premature beat condition, on the other hand, the threshold value setting is lower for avoiding the detection leakage, and false triggering is easy to generate, the QRS wave detection circuit adopts an operational amplifier U1A, R5, R6, R7, a diode D1 and the like to form a full-wave rectifier, on the other hand, U1B, R8, D2, C1, R9 and U1D, R10, D3 and C2 form two peak value detection circuits, by utilizing the partial pressure of R11 and R12, 70% of the peak value of the former group of QRS waves is taken as the detection threshold value of the latter group of QRS waves, the peak value detector U1C detects the envelope signal after filtering and rectification, the multi-peak waveform is converted into a single-peak waveform, and a group of electric waves only jump once, so that the detection omission and false triggering are avoided to a limited extent.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

Claims (4)

1.一种采用动态差分算法的心电监护仪,其特征在于:包括纸电极、与所述纸电极连接的模拟放大模块以及单片机数字模块,所述模拟放大模块包括前置仪表放大电路、驱动屏蔽电路、中间主放大滤波电路、QRS波检出电路以及导联脱落检测电路,所述驱动屏蔽电路用于抑制分布电容引起的静电耦合干扰,所述的单片机数字模块包括采样保持电路、A/D变换器、flash存储器、显示报警单元、电源控制电路和按键控制电路,所述显示报警单元包括显示电路和声音报警电路,所述纸电极为自湿润纸电极,所述A/D变换器采用10位8路A/D变换器,所述A/D变换器的采样频率设置为2.5ms定时触发,所述A/D变换器在软件层面做一个采样时钟的类分频处理,每0.5s启动所述导联脱落检测电路进行一次导联脱落判断,所述声音报警电路连接有一个外部蜂鸣器,所述外部蜂鸣器和所述按键控制电路均设有软定时器,所述软定时器用于控制所述按键控制回路的延迟响应时间以及所述外部蜂鸣器的工作时间,所述flash存储器包括数据读取和数据存储,所述flash存储器连接一服务器,所述数据存储中存储信息包括监护仪状态,所述监护仪状态包括上次关机时间、未发送心电数据段的起始序号以及长度。1. a kind of electrocardiogram monitor that adopts dynamic differential algorithm, it is characterized in that: comprise paper electrode, the analog amplifying module that is connected with described paper electrode and single-chip digital module, and described analog amplifying module comprises pre-instrument amplifying circuit, drive A shielding circuit, an intermediate main amplifying filter circuit, a QRS wave detection circuit and a lead-off detection circuit, the drive shielding circuit is used to suppress electrostatic coupling interference caused by distributed capacitance, and the single-chip digital module includes a sample-hold circuit, an A/ D converter, flash memory, display alarm unit, power control circuit and key control circuit, the display alarm unit includes a display circuit and a sound alarm circuit, the paper electrode is a self-wetting paper electrode, and the A/D converter adopts 10-bit 8-channel A/D converter, the sampling frequency of the A/D converter is set to 2.5ms timing trigger, the A/D converter does a class frequency division processing of the sampling clock at the software level, every 0.5s Start the lead-off detection circuit to make a lead-off judgment, the sound alarm circuit is connected with an external buzzer, the external buzzer and the button control circuit are both provided with a soft timer, and the soft The timer is used to control the delay response time of the button control loop and the working time of the external buzzer. The flash memory includes data reading and data storage. The flash memory is connected to a server, and the data storage is stored in the The information includes the status of the monitor, and the status of the monitor includes the last shutdown time, the starting sequence number and length of the unsent ECG data segment. 2.如权利要求1所述的一种采用动态差分算法的心电监护仪,其特征在于:所述显示报警单元采用LCD液晶板实现人机交互。2 . The electrocardiographic monitor using a dynamic differential algorithm as claimed in claim 1 , wherein the display alarm unit adopts an LCD liquid crystal panel to realize human-computer interaction. 3 . 3.如权利要求2所述的一种采用动态差分算法的心电监护仪,其特征在于:所述flash存储器连接有GPRS单元。3. A kind of ECG monitor using dynamic differential algorithm as claimed in claim 2, is characterized in that: described flash memory is connected with GPRS unit. 4.如权利要求3所述的一种采用动态差分算法的心电监护仪,其特征在于:所述QRS波检出电路中运放U1A和二极管D1构成全波整流器,U1B和U1D构成两个时间峰值不等的峰值检测电路,U1B峰值检测电路和U1D峰值检测电路的放电回路时间常数分别为0.33s和3.5s,电路中有电阻R11和电阻R12,所述电阻R11和所述电阻R12用于分压。4. a kind of ECG monitor adopting dynamic differential algorithm as claimed in claim 3 is characterized in that: in described QRS wave detection circuit, operational amplifier U1A and diode D1 constitute full-wave rectifier, and U1B and U1D constitute two The peak detection circuit with different time peaks, the discharge loop time constants of the U1B peak detection circuit and the U1D peak detection circuit are 0.33s and 3.5s respectively. There are resistors R11 and R12 in the circuit, and the resistors R11 and R12 are used for in partial pressure.
CN202110454727.7A 2021-04-26 2021-04-26 An ECG Monitor Using Dynamic Difference Algorithm Pending CN113171108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110454727.7A CN113171108A (en) 2021-04-26 2021-04-26 An ECG Monitor Using Dynamic Difference Algorithm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110454727.7A CN113171108A (en) 2021-04-26 2021-04-26 An ECG Monitor Using Dynamic Difference Algorithm

Publications (1)

Publication Number Publication Date
CN113171108A true CN113171108A (en) 2021-07-27

Family

ID=76926339

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110454727.7A Pending CN113171108A (en) 2021-04-26 2021-04-26 An ECG Monitor Using Dynamic Difference Algorithm

Country Status (1)

Country Link
CN (1) CN113171108A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02283355A (en) * 1989-04-25 1990-11-20 Suzuken:Kk Recognition of r wave in qrs zone of wave shape of electrocardiogram
US6236882B1 (en) * 1999-07-14 2001-05-22 Medtronic, Inc. Noise rejection for monitoring ECG's
CN101510127A (en) * 2009-03-30 2009-08-19 北京中星微电子有限公司 Method, apparatus and chip for implementing keyboard module composite key function
CN201796104U (en) * 2010-09-21 2011-04-13 重庆三祥汽车电控系统有限公司 On-board wiring harness continuity tester
CN102125428A (en) * 2011-03-17 2011-07-20 中国人民解放军海军医学研究所 Vital sign monitoring system for diver in underwater operation
CN104976858A (en) * 2015-07-31 2015-10-14 苏州路之遥科技股份有限公司 Intermittent type refrigerator controller
CN204839502U (en) * 2015-04-01 2015-12-09 漯河医学高等专科学校 Electrocardio control appearance
CN205251535U (en) * 2015-11-20 2016-05-25 博雅网络游戏开发(深圳)有限公司 Electrocardiograph (ECG) monitor
CN205286931U (en) * 2015-06-02 2016-06-08 德极企业有限公司 Electronic medicine box
CN106096471A (en) * 2016-08-09 2016-11-09 安徽汉威电子有限公司 A kind of low power consumption, RF card is without switch inspection card system
CN110840434A (en) * 2018-08-21 2020-02-28 中南大学 A low-power bluetooth ECG monitoring system based on discrete components and microprocessors

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02283355A (en) * 1989-04-25 1990-11-20 Suzuken:Kk Recognition of r wave in qrs zone of wave shape of electrocardiogram
US6236882B1 (en) * 1999-07-14 2001-05-22 Medtronic, Inc. Noise rejection for monitoring ECG's
CN101510127A (en) * 2009-03-30 2009-08-19 北京中星微电子有限公司 Method, apparatus and chip for implementing keyboard module composite key function
CN201796104U (en) * 2010-09-21 2011-04-13 重庆三祥汽车电控系统有限公司 On-board wiring harness continuity tester
CN102125428A (en) * 2011-03-17 2011-07-20 中国人民解放军海军医学研究所 Vital sign monitoring system for diver in underwater operation
CN204839502U (en) * 2015-04-01 2015-12-09 漯河医学高等专科学校 Electrocardio control appearance
CN205286931U (en) * 2015-06-02 2016-06-08 德极企业有限公司 Electronic medicine box
CN104976858A (en) * 2015-07-31 2015-10-14 苏州路之遥科技股份有限公司 Intermittent type refrigerator controller
CN205251535U (en) * 2015-11-20 2016-05-25 博雅网络游戏开发(深圳)有限公司 Electrocardiograph (ECG) monitor
CN106096471A (en) * 2016-08-09 2016-11-09 安徽汉威电子有限公司 A kind of low power consumption, RF card is without switch inspection card system
CN110840434A (en) * 2018-08-21 2020-02-28 中南大学 A low-power bluetooth ECG monitoring system based on discrete components and microprocessors

Similar Documents

Publication Publication Date Title
WO2007082462A1 (en) Method and apparatus for remote mobile monitoring electronic physiological data based on wan
JPS6141438A (en) Electrocardiograph monitor apparatus for indivisual
CN104274202A (en) Electronic stethoscope and electronic stethoscopy system
CN202821337U (en) Portable eighteenth leading synchronous electrocardio collecting box
CN104545885A (en) Patch type dynamic electrocardiograph recorder
US11969252B2 (en) Method and system for continuous monitoring of patients for arrhythmias
CN105662373A (en) Intelligent heart rate and heart rhythm electrocardio sphygmomanometer
JP3867168B2 (en) Electrocardiograph
CN113171108A (en) An ECG Monitor Using Dynamic Difference Algorithm
CN104107036A (en) Household portable monitoring device for sleep apnea
CN103961082A (en) Portable electronic product with heart rate monitoring function
JP3125077B2 (en) Telemeter device for biological signals
CN212326424U (en) An electrocardiographic signal recording device
CN214073280U (en) Wearable wireless noninvasive continuous blood pressure monitoring device
CN115363532A (en) Implantable medical device and system and method for triggering storage thereof
CN211270704U (en) Portable developments electrocardio blood pressure respiratory wave record appearance
JP2806355B2 (en) Home patient biological information acquisition system
CN214410199U (en) Medical wrist type multifunctional calling device
TW201102975A (en) Portable alarm device with the function of warning the unusual situation of hearts
CN215384023U (en) Split type sphygmomanometer with atrial fibrillation detection function
CN205041378U (en) But low -power consumption pulse tester of seeing and hearing
CN203914911U (en) Overlength time-histories cardiac electric recording apparatus based on nand flash memory and SPI interface
CN217186186U (en) a wireless stethoscope
CN2193717Y (en) Standard 12-leads instantaneous dynamic electrocardiograph
JP2720345B2 (en) Portable electrocardiograph

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210727

RJ01 Rejection of invention patent application after publication