CN117462138A - Female child electrocardio uterine contraction monitoring system - Google Patents
Female child electrocardio uterine contraction monitoring system Download PDFInfo
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- CN117462138A CN117462138A CN202311422435.0A CN202311422435A CN117462138A CN 117462138 A CN117462138 A CN 117462138A CN 202311422435 A CN202311422435 A CN 202311422435A CN 117462138 A CN117462138 A CN 117462138A
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- 208000036029 Uterine contractions during pregnancy Diseases 0.000 title claims abstract description 55
- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
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- 230000008774 maternal effect Effects 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000007405 data analysis Methods 0.000 claims abstract description 4
- 210000001015 abdomen Anatomy 0.000 claims description 20
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- 210000004291 uterus Anatomy 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
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- 229910052744 lithium Inorganic materials 0.000 description 3
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- 230000000747 cardiac effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
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- 238000005070 sampling Methods 0.000 description 2
- 208000022471 Fetal disease Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/256—Wearable electrodes, e.g. having straps or bands
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
- A61B5/307—Input circuits therefor specially adapted for particular uses
- A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/321—Accessories or supplementary instruments therefor, e.g. cord hangers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/344—Foetal cardiography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
- A61B5/4356—Assessing uterine contractions
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- A—HUMAN NECESSITIES
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- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
- A61B5/4362—Assessing foetal parameters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6831—Straps, bands or harnesses
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Abstract
The invention provides a maternal-fetal electrocardio uterine contraction monitoring system which comprises an acquisition bandage, an acquisition circuit board and a mobile terminal of a mobile phone, and is characterized in that the acquisition bandage is provided with eight electrodes serving as signal acquisition points at the waist of a human body, the acquisition circuit board is connected with the acquisition bandage through a hidden buckle, and a wire contained in the bandage can transmit signals acquired at the electrodes to the acquisition circuit board for processing; the analog-to-digital conversion module of the acquisition circuit board converts the acquired original mother tire mixed electrocardiosignal and the mother uterine contraction signal into digital signals and then transmits the digital signals to the Bluetooth SOC module for data packaging, and the Bluetooth SOC module transmits the data to the mobile terminal of the mobile phone for data analysis in a wireless mode to display electrocardio and uterine contraction waveforms. The portable fetal health monitoring device disclosed by the invention realizes portable sensing of the health of the mother and the fetus by monitoring the fetal electrocardio, the maternal electrocardio and the maternal uterine contraction signals in real time, has small equipment volume and low power consumption, is convenient for health monitoring at any time and any place, and is suitable for long-time physiological monitoring.
Description
Technical Field
The invention relates to an electrocardiograph monitoring system, in particular to a maternal-fetal electrocardiograph and maternal uterine contraction monitoring system.
Background
With the development of the times and the improvement of living standard, people pay more attention to health, and the proportion of expenditure in health to total expenditure is also increased. The population problem is always a major concern of the country, and the improvement of the quality of the birth population at the present stage is not only related to the future fate of each family to a certain extent, but also has profound influence on the long-term development of the country.
Medical research proves that the detection of various physiological indexes of the fetus during pregnancy is helpful for finding neonatal diseases as early as possible, can prevent the influence of some diseases as early as possible, and has great significance for prenatal and postnatal care and improvement of national population quality. The high-speed development of modern technology provides more possibility for fetal health monitoring, becomes a powerful guarantee for the safety of pregnant women and fetuses in the delivery period, and is widely applied to clinic at home and abroad. There is also an increasing demand for maternal and fetal health care today, with the advent of a variety of fetal care methods.
The fetal monitoring means currently applied to clinic mainly comprise three types: fetal heart sounds, fetal heart movements and fetal heart rate monitoring. The three monitoring means are mainly used for effectively detecting the fetal heart activity, so that various health conditions of the fetus in the growth and development process can be judged as early as possible, targeted intervention treatment can be realized as early as possible, and the healthy growth of the fetus is ensured.
At the present stage, the most clinically used fetal monitoring is to detect fetal heart sounds by utilizing an ultrasonic Doppler effect, and the main principle of the method is to actively transmit ultrasonic waves to act on the fetus by means of an instrument, and determine the growth and development conditions of the fetus from different reflected signals of various tissues of the fetus on the ultrasonic waves. The method is simple, low in cost, mature in technology and widely applied to clinical hospitals, but has obvious defects, and mainly comprises the following steps: (1) The heart of the abdomen inner tube child is not fully developed, and the volume of the heart is smaller, so that the accurate shooting of ultrasonic beams is difficult; (2) The fetal heart rate condition can only be obtained generally, and the fetal microscopic physiological information is lack of record and cannot reflect the fetal physiological condition in time; (3) The ultrasonic wave has obvious interference caused by maternal movement, uterine contraction and the like, has energy, brings unknown harm to the fetus, and is not suitable for long-term monitoring. Fetal heart monitoring is a health monitoring by recording changes in pressure in the fetal heart cycle, acquiring fetal heart activity, which is a complex and maternal-sensitive measure. The fetal electrocardiosignal is the most originating signal of fetal heart activity, reflects the circulatory excitation process of the whole heart activity, can reflect the full view of fetal heart activity more than heart sounds and cardiac signals, has more prominent real-time performance, and can generate morphological changes more rapidly than heart sounds, cardiac sounds and the like if the fetal in the abdomen has abnormality. Further, fetal electrocardiograms, like adult electrocardiograms, derive more information on fetal heart conditions from delineated electrocardiographic waveforms. More fetal physiological information can be mined and researched through extraction and analysis of fetal electrocardio waveforms.
At the present stage, most fetal electrocardiograph monitors in the market are mainly provided by certain large hospitals, special medical staff in the hospitals are required to operate the fetal electrocardiograph monitors, and the fetal electrocardiograph monitors are high in cost, large in size, inconvenient to use, not completely popularized and cannot meet social demands. Pregnant women are inconvenient to move, belong to high-risk groups, are extremely easy to hurt in the home and hospital, and are easy to stress in the hospital environment so as to influence the accuracy of fetal electrocardio acquisition. Due to the limitation of conditions, the long-term monitoring of the inner tube of the abdomen can not be performed, which may cause the conditions of missed detection, false detection and the like, and cause different degrees of damage to the fetus.
At present, portable fetal electrocardiograph monitors with embedded platforms appear on the market, so that fetal electrocardiograph conditions can be monitored, but only electrocardiograph monitoring is insufficient to comprehensively analyze the current health condition of a fetus. The development of the fetus in the mother's uterus is closely related to the state of activity of the mother's uterus, and the Gong Su curve describes the rate of rise and fall of the uterine contractions pressure, the highest pressure, the duration and the interval between the two contractions. Uterine contraction can cause the fetal heart rate to be accelerated or slowed down, and the condition of uterine contraction can directly influence the activity and delivery of the fetal heart.
Uterine contraction, i.e. regular contraction of uterus, is an important monitoring index for clinical pregnant woman's labor examination. The main sign of parturient is regular uterine contractions, which is also the main thrust of parturition. The current commercially available device for monitoring uterine contractions is a TOCO-compression pressure labor (TOCO). TOCO is fixed on the abdomen of a pregnant woman through a waistband, and the deformation degree of the abdomen of the pregnant woman is recorded by using a pressure sensor to monitor uterine contraction, but the method is easily interfered by the movement of the pregnant woman, the manipulation of doctors and the overfatness of the pregnant woman, and the result is inaccurate. The body surface myoelectricity (EHG) signal is the electrical activity of the pregnant uterus detected from the body surface of a pregnant woman, and is a comprehensive representation of the individual electrical activity of numerous uterine smooth muscle cells. EHG is obtained from the abdominal surface of pregnant women, and the uterine contractions are expressed in the form of burst waves, and in delivery, EHG signal burst waves have high amplitude and frequently occur, and are related to large changes in intrauterine pressure and pain sensation, and can more accurately reflect the changes in intrauterine pressure, so EHG signals can be used for predicting premature delivery and monitoring uterine contractions.
Based on the problems, the intelligent mobile phone and embedded platform wearable maternal-fetal electrocardio uterine contraction monitoring system realizes high-precision real-time fetal electrocardio remote monitoring, and can monitor the health of the abdomen-inner tube of the infant for a long time. The pregnant woman can be kept home, the health condition of the abdomen and the inner tube can be known in real time at home, and meanwhile, the uterine myoelectricity monitoring technology is added to realize real-time monitoring of the uterine contraction signal, so that the pregnant woman has wide commercial application value.
Disclosure of Invention
In order to overcome the limitations in the prior art, the invention provides a maternal-fetal electrocardio-uterine contraction monitoring system which is mainly characterized in that the maternal-fetal electrocardio-monitoring system can monitor maternal electrocardio, fetal electrocardio and maternal uterine contraction in real time, can collect original maternal-fetal mixed electrocardio signals at multiple points through a collection bandage, can monitor maternal uterine contraction for a long time, is small and portable, and can be independently measured and monitored by a pregnant woman at any time.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the utility model provides a female child electrocardio uterine contraction monitoring system which characterized in that: the system comprises an acquisition bandage, an acquisition circuit board and a mobile terminal of a mobile phone, wherein:
the collecting bandage has eight electrodes at the waist of a human body as signal collecting points, can collect signals at the navel, the side belly, the side waist, the rear waist and the lower abdomen of a pregnant woman, the electrodes at the navel, the side belly and the side waist collect original maternal-fetal mixed electrocardiosignals, the electrodes at the lower abdomen collect maternal uterine contraction signals, the electrodes at the rear waist collect maternal electrocardiosignals as references, and the wires contained in the bandage can transmit the signals collected at the electrodes to the collecting circuit board for processing;
the acquisition circuit board comprises a circuit module and a shell, wherein the circuit module is fixed in the shell through screws, and amplification, analog-to-digital conversion and wireless data transmission of an original mother tyre mixed electrocardiosignal and a uterine contraction signal are realized; the circuit module comprises a power management module, an analog-to-digital conversion module and a Bluetooth SOC module, wherein after an acquisition circuit board is fixedly connected with an acquisition bandage through a hidden button, the acquisition circuit board is electrified, the Bluetooth SOC module on the acquisition circuit board starts to broadcast outwards periodically, at the moment, the acquisition circuit board can be scanned, and the acquisition circuit board can be used as a slave machine to enter into a connection when a connection request is received;
the mobile terminal of the mobile phone starts Bluetooth, then the mobile terminal of the mobile phone can be used as a host to see the name of an acquisition circuit board serving as a slave machine in a Bluetooth list (the name of the slave machine is set through Bluetooth SOC chip codes), the host starts Bluetooth to scan a broadcast packet periodically sent by the slave machine, two-way communication can be carried out after connection is established with the slave machine, the slave machine starts to acquire an original master-tyre mixed electrocardiosignal and a parent uterine contraction signal after the host machine sends an acquisition starting instruction to the slave machine, data are packed and sent to the host machine through Bluetooth in a wireless mode, and an APP of the mobile terminal of the mobile phone is responsible for carrying out data analysis and displaying electrocardio and uterine contraction waveforms.
Further, the total length of the collecting bandage is 95cm, the electrode at the navel is taken as an origin, the electrodes at the left and right side stomachs are respectively 8cm away from the navel, the electrodes at the left and right side waists are respectively 22cm away from the navel, the electrodes at the left and right lower abdomen are respectively 6cm away from the navel, the electrodes are respectively 6cm below the navel, and the electrodes are flexible conductive fabric with the diameter of 3 cm.
Further, the analog-to-digital conversion module of the acquisition circuit board firstly amplifies the original mother tyre mixed electrocardiosignal and the uterine contraction signal by a certain gain multiple, the amplified signal carries out analog-to-digital conversion on the multichannel analog signal through the multiplexer modulation and the analog-to-digital converter, and the multichannel original mother tyre mixed electrocardiosignal and the uterine contraction signal are converted into digital quantity and transmitted to the Bluetooth SOC module.
Further, the Bluetooth SOC module of the acquisition circuit board integrates the digital signals obtained by the analog-to-digital conversion module into data packets, and the data packets are periodically sent to the mobile terminal of the mobile phone by utilizing a Bluetooth protocol stack.
Further, the mobile terminal of the mobile phone analyzes the data packet sent by the Bluetooth SOC module, filters and traps the original signal, separates the mother-child mixed electrocardio by using the reference signal through the LMS least mean square algorithm, and displays the mother electrocardio, the fetal electrocardio and the mother uterine contraction waveform in the mobile terminal APP of the mobile phone.
The invention is characterized in that the maternal-fetal electrocardio-uterine contraction monitoring system is used for realizing early prediction and perception of fetal diseases by monitoring maternal electrocardio signals, fetal electrocardio signals and maternal uterine contraction signals in real time, has small volume and low power consumption, is convenient for health monitoring at any time, and is suitable for long-time physiological monitoring.
Drawings
FIG. 1 is a schematic diagram of a maternal-fetal electrocardio-uterine contraction monitoring system of the invention.
Detailed Description
In order that the manner in which the above recited features of the present invention are attained and can be understood in detail, a more particular description of the invention, briefly summarized below, may be had by way of illustration, not limitation, of the invention.
A mother fetus electrocardio uterine contraction monitoring system, referring to figure 1, comprises an acquisition bandage, an acquisition circuit board and a mobile terminal of a mobile phone. Eight electrodes are arranged on the waist of a human body and are used as signal acquisition points, each electrode is made of flexible conductive fabric with the diameter of 3cm, signals at the navel, the lateral belly, the lateral waist, the rear waist and the lower abdomen of a pregnant woman can be acquired, the electrodes at the navel, the lateral belly (left and right sides) and the lateral waist (left and right sides) acquire original maternal fetal electrocardiosignals, the electrodes at the lower abdomen (left and right sides) acquire maternal uterine contraction signals, the electrodes at the rear waist acquire maternal electrocardiosignals as references, and a lead in the bandage can transmit the signals acquired at the electrodes to an acquisition circuit board for processing; the acquisition circuit board comprises a power management module, an analog-to-digital conversion module and a Bluetooth SOC module, wherein the power management module stabilizes the input voltage of an external lithium battery to the voltage value required by each circuit module, the analog-to-digital conversion module amplifies the multichannel original mother tire mixed electrocardio mixed signal and the uterine contraction signal acquired by a bandage acquisition point by a certain multiple and converts the multichannel original mother tire mixed electrocardio mixed signal and the uterine contraction signal into digital quantity, and the Bluetooth SOC module packages and transmits the data; after the mobile terminal of the mobile phone starts Bluetooth, the mobile terminal of the mobile phone can be used as a host to see the name of the acquisition circuit board serving as a slave in a Bluetooth list, and the host starts Bluetooth to scan the broadcast packet periodically sent by the slave outwards, so that bidirectional communication can be performed after connection with the slave is established. After the host sends an acquisition starting instruction to the slave, the slave starts to acquire an original maternal-fetal mixed electrocardiosignal and a maternal uterine contraction signal, packages data and sends the data to the host wirelessly through Bluetooth, and an APP at the mobile terminal of the mobile phone is responsible for carrying out data analysis and displaying electrocardio and uterine contraction waveforms.
The power management module adopts a TPS73801 buck conversion chip and a TPS60110 charge pump boost chip of TI company, the TPS73801 converts the voltage input by an external lithium battery into the voltage required by the analog-to-digital conversion module and the Bluetooth SOC module by buck conversion in the power management circuit, and the voltage is electrified to each module through a switch and is used as the digital power input of the analog-to-digital conversion module. The TPS60110 converts the voltage input by the external lithium battery into the voltage required by the analog-to-digital conversion module by boost conversion as its analog power input.
The analog-to-digital conversion module realizes analog-to-digital conversion of the multi-channel original mother tyre mixed electrocardiosignal and the uterine contraction line, wherein the analog-to-digital conversion chip adopts an AD acquisition chip ADS1299 of TI company, and a Programmable Gain Amplifier (PGA), an internal reference, a 24-bit synchronous sampling analog-to-digital converter and the like are built in the analog-to-digital conversion chip. When the multichannel original mother tyre mixed electrocardiosignal and the uterine contraction signal reach the input end of the analog-to-digital conversion module, the multichannel original mother tyre mixed electrocardiosignal and the uterine contraction signal enter a programmable gain amplifier through a multiplexer in the chip, and the multichannel signal is amplified by a certain multiple and then enters the analog-to-digital converter to obtain digital quantity. The AD acquisition chip transmits the converted multipath data to the Bluetooth SOC module by using a communication protocol at a certain sampling frequency.
The Bluetooth SOC module adopts nRF52832 universal multiprotocol SOC of Nordic company, supports low-power consumption Bluetooth, has Cortex-M4 kernel, comprises 2Mbps high transmission speed, and is internally provided with 512KB flash+64KB RAM. After the acquisition circuit board is electrified, the Bluetooth SOC module starts to work, periodically transmits broadcast packets outwards, and transmits self information to the periphery in an understandable manner of a scanner at certain intervals, wherein the information comprises settable broadcast parameters, broadcast data, preferred connection parameters, connection parameter negotiation and contained services. After the mobile terminal of the mobile phone starts Bluetooth, actively scans nearby broadcast packets, selects and establishes connection with the slave, the mobile terminal of the mobile phone can be in communication connection with the SOC chip of the acquisition circuit board according to set parameters, after the connection is established, the mobile terminal sends a start signal acquisition instruction, the slave analyzes the data packets and verifies the start acquisition instruction, and after verification is successful, the AD acquisition chip starts multichannel data analog-digital conversion. After the AD acquisition chip transmits the conversion result to the SOC chip, the SOC chip collects data in the data buffer area and packages the data, and the data is periodically transmitted to the mobile terminal of the mobile phone.
The mobile terminal of the mobile phone analyzes the data packet, filters and traps the data after the analysis is completed to obtain a maternal-fetal electrocardio-mixed signal and a maternal uterine contraction signal, separates the maternal-fetal electrocardio-mixed signal by using a reference signal through an LMS algorithm to obtain a fetal electrocardio-signal and a maternal electrocardio-signal, and displays waveforms and Gong Su curves on the APP of the mobile terminal of the mobile phone.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and equivalent changes or substitutions made on the basis of the above-mentioned technical solutions fall within the scope of the present invention as defined in the claims.
Claims (5)
1. The utility model provides a female child electrocardio uterine contraction monitoring system which characterized in that: the system comprises an acquisition bandage, an acquisition circuit board and a mobile terminal of a mobile phone, wherein:
the collecting bandage has eight electrodes at the waist of a human body as signal collecting points, can collect signals at the navel, the side belly, the side waist, the rear waist and the lower abdomen of a pregnant woman, the electrodes at the navel, the side belly and the side waist collect original maternal-fetal mixed electrocardiosignals, the electrodes at the lower abdomen collect maternal uterine contraction signals, the electrodes at the rear waist collect maternal electrocardiosignals as references, and the wires contained in the bandage can transmit the signals collected at the electrodes to the collecting circuit board for processing;
the acquisition circuit board comprises a circuit module and a shell, wherein the circuit module is fixed in the shell through screws, and amplification, analog-to-digital conversion and wireless data transmission of an original mother tyre mixed electrocardiosignal and a uterine contraction signal are realized; the circuit module comprises a power management module, an analog-to-digital conversion module and a Bluetooth SOC module, wherein after an acquisition circuit board is fixedly connected with an acquisition bandage through a hidden button, the acquisition circuit board is electrified, the Bluetooth SOC module on the acquisition circuit board starts to broadcast outwards periodically, at the moment, the acquisition circuit board can be scanned, and the acquisition circuit board can be used as a slave machine to enter into a connection when a connection request is received;
the mobile terminal of the mobile phone starts Bluetooth, then the mobile terminal of the mobile phone can be used as a host to see the name of an acquisition circuit board serving as a slave machine in a Bluetooth list (the name of the slave machine is set through Bluetooth SOC chip codes), the host starts Bluetooth to scan a broadcast packet periodically sent by the slave machine, two-way communication can be carried out after connection is established with the slave machine, after the host sends a start acquisition instruction to the slave machine, the slave machine starts to acquire an original master-tyre mixed electrocardiosignal and a parent uterine contraction signal, data are packed and sent to the host machine through Bluetooth in a wireless mode, and an APP of the mobile terminal of the mobile phone is responsible for carrying out data analysis and displaying electrocardio and uterine contraction waveforms.
2. The maternal-fetal electrocardio uterine contraction monitoring system according to claim 1, wherein the total length of the acquisition bandage is 95cm, the electrodes at the navel are taken as an origin, the electrodes at the left and right side stomachs are 8cm away from the navel respectively, the electrodes at the left and right side waists are 22cm away from the navel respectively, the electrodes at the left and right lower abdomen are 6cm away from the navel respectively, 6cm below the navel are made of flexible conductive fabric with the diameter of 3 cm.
3. The maternal-fetal electrocardio-uterine contraction monitoring system according to claim 1, wherein the analog-digital conversion module of the acquisition circuit board firstly amplifies an original maternal-fetal mixed electrocardio signal and a uterine contraction signal by a certain gain multiple, the amplified signals are subjected to analog-digital conversion on a multichannel analog signal through multiplexer modulation and an analog-digital converter, and the multichannel original maternal-fetal mixed electrocardio signal and the uterine contraction signal are converted into digital quantities and are transmitted to the Bluetooth SOC module.
4. The maternal-fetal electrocardio uterine contraction monitoring system according to claim 1, wherein the Bluetooth SOC module of the acquisition circuit board integrates the digital signals obtained by the analog-to-digital conversion module into a data packet, and the data packet is periodically sent to the mobile terminal of the mobile phone by using a Bluetooth protocol stack.
5. The maternal-fetal electrocardiograph uterine contraction monitoring system according to claim 1, wherein the mobile terminal of the mobile phone analyzes a data packet sent by the Bluetooth SOC module, performs filtering and notch processing on an original signal, separates maternal-fetal mixed electrocardiographs by using a reference signal through an LMS least mean square algorithm, and displays maternal electrocardiograph, fetal electrocardiograph and maternal uterine contraction waveforms in the mobile terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311422435.0A CN117462138A (en) | 2023-10-30 | 2023-10-30 | Female child electrocardio uterine contraction monitoring system |
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| CN202311422435.0A CN117462138A (en) | 2023-10-30 | 2023-10-30 | Female child electrocardio uterine contraction monitoring system |
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