A wearable device based on promoting fetal movement and movement trajectory induction
By designing a wearable device that includes a microphone array and an LED light array for prenatal education, real-time monitoring of fetal heart sounds and fetal movements, as well as motion induction, is achieved. This solves the problem of the limited functionality of existing devices and provides convenient prenatal education and prevention of umbilical cord entanglement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 伊宁市小孕书健康管理工作室(个体工商户)
- Filing Date
- 2026-03-26
- Publication Date
- 2026-06-09
AI Technical Summary
Existing prenatal education devices lack the functions of fetal heart rate monitoring, fetal movement detection, fetal movement trajectory guidance, and prenatal education, and are inconvenient to use and expensive.
A wearable device was designed, comprising a flexible substrate, a microphone array, a sound acquisition and detection module, an LED light array for prenatal education, and a system control module. The microphone array collects fetal sounds and fetal movement signals, and uses sound and light to stimulate fetal movement, thereby achieving prenatal education and movement induction, and preventing umbilical cord entanglement.
It enables real-time monitoring of fetal heart sounds and movements, provides light and sound prenatal education functions, prevents and reduces umbilical cord entanglement, and is small in size and easy to wear.
Smart Images
Figure CN122163965A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of nursing and medical care, and more specifically, to a wearable device based on promoting fetal movement and inducing fetal movement trajectories. Background Technology
[0002] The concept of prenatal education originated in ancient my country and has attracted attention from researchers in various fields such as medicine, education, philosophy, and literature for thousands of years. With the increasing emphasis on early childhood education, many parents, hoping to give their children a head start, have begun to experiment and explore prenatal education to varying degrees. Numerous experimental studies both domestically and internationally have confirmed that fetuses exhibit regular or steady movements in response to external stimuli, proving that fetuses can receive "education" and providing strong scientific evidence for pregnant women to conduct prenatal education.
[0003] Scientific research has shown that consistent use of scientific prenatal education devices significantly promotes fetal brain development and the maturation and development of other bodily functions. Specifically, this manifests in areas such as IQ, EQ, language, artistic talent, manual dexterity, and physical fitness, with fetuses exhibiting clear advantages over those who have not received prenatal education. Therefore, prenatal education is extremely important for both parents and children.
[0004] Fetal heart rate monitoring was introduced to my country in the 1980s, and it is now one of the most commonly used monitoring methods in obstetrics and gynecology, widely applied in clinical practice. Fetal heart rate monitoring is simple and painless, playing a crucial role in the accurate assessment of the condition of the fetus in utero.
[0005] Based on the current situation both domestically and internationally, many home-use prenatal education devices and fetal heart rate monitors on the market can achieve these functions individually, but no instrument can simultaneously provide fetal heart rate monitoring, fetal movement detection, fetal movement trajectory guidance, and prenatal education functions. Moreover, existing devices often have shortcomings such as inconvenience in use and high price. Summary of the Invention
[0006] This invention patent provides a novel wearable device designed to promote fetal movement and induce fetal movement trajectories. It can continuously monitor fetal heart sounds, fetal movement signals, and fetal movement trajectories. Through the system control module, it implements light and sound prenatal education functions and can use sound and light to stimulate and induce the fetus, changing the fetal movement trajectory. This achieves multiple purposes of monitoring, prenatal education, and movement induction, so as to better conduct prenatal education and fetal heart sound monitoring, and prevent and reduce the occurrence of umbilical cord entanglement.
[0007] The technical solution adopted in this invention is as follows:
[0008] A wearable device based on promoting fetal movement and inducing fetal movement trajectory, with functions of fetal heart monitoring, fetal movement detection and fetal movement trajectory induction, the system includes a flexible substrate, on which are arranged a microphone array, a sound acquisition and detection module connected to the microphone array, a sound prenatal education storage and playback module for sound prenatal education, a light prenatal education LED array for light prenatal education, a system control module and a system voltage module, etc.
[0009] The microphone array is used to collect fetal heart sounds and fetal movement signals, converting the sound signals into voltage signals that can be processed by subsequent units. These signals are then sent to the sound acquisition and detection module. The optimal channel selection algorithm of the system control module determines the location of the strongest fetal heart sound, which is the location of the fetal heart. This allows for the determination of the fetal head position and fetal posture. Light and sound prenatal education can be performed near the fetal head position to achieve early prenatal education. Simultaneously, using sound and light signals from different locations can stimulate and induce fetal movement, thereby changing the direction and trajectory of fetal movement and potentially preventing or reducing umbilical cord entanglement.
[0010] Preferably, the microphone array can be either an electret microphone or a dynamic microphone, and the microphone array is arranged in multiple positions on the abdominal belt (e.g., four; for ease of explanation, the embodiments are described using four positions as an example). The microphone array converts the sound (fetal sound, fetal movement) signal into a voltage signal that can be processed by the subsequent unit, and all of them are connected to the preamplifier circuit, playing a role in buffering, isolation, and improving the load capacity.
[0011] The sound acquisition and detection module is connected to the microphone array and the system control module. Preferably, the sound acquisition and detection module includes a preamplifier circuit, a high-pass and low-pass filter module, a secondary amplifier module, a notch filter module, and a level-up module. The preamplifier circuit is a follower circuit, which buffers, isolates, and improves the signal's load capacity. The high-pass and low-pass filter module is used to extract fetal heart sound signals with frequencies between 60Hz and 180Hz. The secondary amplifier module amplifies the amplitude of the fetal heart sound and fetal movement signals for easier data processing. The notch filter module filters out 50Hz power frequency signals and their 100Hz and 150Hz harmonic interference signals. The level-up module boosts the negative voltage to above 0V for AD conversion.
[0012] The prenatal audio education storage and playback module includes a voice integration module and a speaker array, used for downloading, storing, and playing audio education materials. Specifically, the voice integration module includes an SD / MMC card and a USB storage device, supporting music formats such as MP3. Various audio education materials can be downloaded to the storage card and played according to the expectant mother's needs. The voice integration module also includes prenatal music playback control buttons, allowing adjustment of volume and changing the playback order of songs as needed. The speaker array (such as a high-fidelity internal magnetic speaker) of the prenatal audio education storage and playback module is arranged in multiple locations on the abdominal binder.
[0013] The light-emitting diode (LED) array of the prenatal light source can be composed of orange-yellow LEDs with a wavelength of 570-622nm. The fetus is most sensitive to light of this wavelength. The LED array is arranged in multiple positions on the abdominal belt, and the working mode and light duration of the prenatal light education are controlled by the system control module.
[0014] The system control module includes a microprogrammable controller (MCU), an analog-to-digital converter (AD / AD) module, a display module, a voltage conversion module, and a multi-select analog switch. The AD / AD conversion module converts the analog electrical signals acquired by the sound acquisition and detection module into digital signals that can be processed by the MCU. The display module displays the fetal heart rate per minute, the number of fetal movements per hour, and the direction of fetal movement in real time. The voltage conversion module obtains ±5V to drive the chip in the sound acquisition and detection module. The microprogram controller (MCU) controls a multi-select analog switch to select from multiple microphone arrays, speaker arrays, and LED arrays, and processes and displays the data sampled by the AD conversion using algorithms. Through algorithmic processing and comparison, it determines the number of fetal heart sounds and fetal movements, identifies the location with the strongest detected signal, and uses this location to determine the fetal head position, fetal posture, and direction of fetal movement. The detected fetal heart sounds, fetal movement counts, and fetal movement direction information are then output to the display module. The MCU can select, according to human control commands, whether the light and sound prenatal education modules work individually or in combination. It can also select the working mode and sequence of the light and sound prenatal education modules near the fetal head position to stimulate and induce the fetus to change its movement trajectory, preventing or reducing the occurrence of umbilical cord entanglement.
[0015] Specifically, the algorithm processing of the microprogrammed controller (MCU) includes: optimal channel selection algorithm, fetal heart and fetal movement counting algorithm, and fetal movement induction algorithm.
[0016] The optimal channel selection algorithm includes: timer initialization, timed sampling, comparing the average value of multiple channel peaks to solve for the signal strength position, opening the signal acquisition function at the corresponding position, and counting the number of fetal sounds and fetal movements.
[0017] The fetal heart rate and fetal movement counting algorithm includes the following steps: reading AD sampling data, performing first-order difference processing on the data, calculating the average of multiple sets of difference values, comparing data extreme values, and counting with a counter.
[0018] The fetal movement induction algorithm includes the following steps: selecting the optimal channel, determining the position of the fetal head, monitoring the channel selection sequence, providing early warning of the fetal movement direction, selecting the light and sound teaching modules in the opposite direction according to the user's control instructions to induce the fetus to reverse; judging the fetal reversal status, and ending the fetal movement induction.
[0019] All modules of this system are placed on a flexible base material, and their ends can be connected by Velcro, buttons, or straps, making it convenient for pregnant women to wear.
[0020] Beneficial effects: The wearable device of the present invention, which promotes fetal movement and induces fetal movement trajectory, can realize the functions of sound prenatal education and light prenatal education. It can monitor the fetal heartbeat and fetal movement in real time, and induce its movement trajectory through sound and light stimulation. Compared with traditional prenatal education devices, the present invention has the advantages of small size and easy wear. On the one hand, it can prevent or reduce the occurrence of umbilical cord entanglement, and on the other hand, it can enable pregnant women to monitor and educate themselves independently. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 The components of the device of the present invention are shown. Figure 1 .
[0023] Figure 2 The components of the device of the present invention are shown. Figure 2 . Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in the present invention are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of the present invention. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this invention illustrate operations implemented according to some embodiments of the present invention. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this invention, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.
[0025] Furthermore, the embodiments described herein are merely some, not all, of the embodiments of the invention. The components of the embodiments of the invention described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0026] It should be noted that the term "comprising" will be used in the embodiments of the present invention to indicate the presence of a feature subsequently declared, but does not preclude the addition of other features. It should also be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present invention, it should also be noted that the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0027] The following is a detailed description of this case, in conjunction with the relevant accompanying drawings in the instruction manual.
[0028] A wearable device based on promoting fetal movement and inducing fetal movement trajectory, with functions of fetal heart monitoring, fetal movement detection and fetal movement trajectory induction, the system includes a flexible substrate, on which are arranged a microphone array, a sound acquisition and detection module connected to the microphone array, a sound prenatal education storage and playback module for sound prenatal education, a light prenatal education LED array for light prenatal education, a system control module and a system voltage module, etc.
[0029] The microphone array is used to collect fetal heart sounds and fetal movement signals, converting the sound signals into voltage signals that can be processed by subsequent units. These signals are then sent to the sound acquisition and detection module. The optimal channel selection algorithm of the system control module determines the location of the strongest fetal heart sound, which is the location of the fetal heart. This allows for the determination of the fetal head position and fetal posture. Light and sound prenatal education can be performed near the fetal head position to achieve early prenatal education. Simultaneously, using sound and light signals from different locations can stimulate and induce fetal movement, thereby changing the direction and trajectory of fetal movement and potentially preventing or reducing umbilical cord entanglement.
[0030] Preferably, the microphone array can be either an electret microphone or a dynamic microphone, and the microphone array is arranged in multiple positions on the abdominal belt (e.g., four; for ease of explanation, the embodiments are described using four positions as an example). The microphone array converts the sound (fetal sound, fetal movement) signal into a voltage signal that can be processed by the subsequent unit, and all of them are connected to the preamplifier circuit, playing a role in buffering, isolation, and improving the load capacity.
[0031] The sound acquisition and detection module is connected to the microphone array and the system control module. Preferably, the sound acquisition and detection module includes a preamplifier circuit, a high-pass and low-pass filter module, a secondary amplifier module, a notch filter module, and a level-up module. The preamplifier circuit is a follower circuit, which buffers, isolates, and improves the signal's load capacity. The high-pass and low-pass filter module is used to extract fetal heart sound signals with frequencies between 60Hz and 180Hz. The secondary amplifier module amplifies the amplitude of the fetal heart sound and fetal movement signals for easier data processing. The notch filter module filters out 50Hz power frequency signals and their 100Hz and 150Hz harmonic interference signals. The level-up module boosts the negative voltage to above 0V for AD conversion.
[0032] The prenatal audio education storage and playback module includes a voice integration module and a speaker array, used for downloading, storing, and playing audio education materials. Specifically, the voice integration module includes an SD / MMC card and a USB storage device, supporting music formats such as MP3. Various audio education materials can be downloaded to the storage card and played according to the expectant mother's needs. The voice integration module also includes prenatal music playback control buttons, allowing adjustment of volume and changing the playback order of songs as needed. The speaker array (such as a high-fidelity internal magnetic speaker) of the prenatal audio education storage and playback module is arranged in multiple locations on the abdominal binder.
[0033] The light-emitting diode (LED) array of the prenatal light source can be composed of orange-yellow LEDs with a wavelength of 570-622nm. The fetus is most sensitive to light of this wavelength. The LED array is arranged in multiple positions on the abdominal belt, and the working mode and light duration of the prenatal light education are controlled by the system control module.
[0034] The system control module includes a microprogrammable controller (MCU), an analog-to-digital converter (AD / AD) module, a display module, a voltage conversion module, and a multi-select analog switch. The AD / AD conversion module converts the analog electrical signals acquired by the sound acquisition and detection module into digital signals that can be processed by the MCU. The display module displays the fetal heart rate per minute, the number of fetal movements per hour, and the direction of fetal movement in real time. The voltage conversion module obtains ±5V to drive the chip in the sound acquisition and detection module. The microprogram controller (MCU) controls a multi-select analog switch to select from multiple microphone arrays, speaker arrays, and LED arrays, and processes and displays the data sampled by the AD conversion using algorithms. Through algorithmic processing and comparison, it determines the number of fetal heart sounds and fetal movements, identifies the location with the strongest detected signal, and uses this location to determine the fetal head position, fetal posture, and direction of fetal movement. The detected fetal heart sounds, fetal movement counts, and fetal movement direction information are then output to the display module. The MCU can select, according to human control commands, whether the light and sound prenatal education modules work individually or in combination. It can also select the working mode and sequence of the light and sound prenatal education modules near the fetal head position to stimulate and induce the fetus to change its movement trajectory, preventing or reducing the occurrence of umbilical cord entanglement.
[0035] Specifically, the algorithm processing of the microprogrammed controller (MCU) includes: optimal channel selection algorithm, fetal heart and fetal movement counting algorithm, and fetal movement induction algorithm.
[0036] The optimal channel selection algorithm includes: timer initialization, timed sampling, comparing the average value of multiple channel peaks to solve for the signal strength position, opening the signal acquisition function at the corresponding position, and counting the number of fetal sounds and fetal movements.
[0037] The fetal heart rate and fetal movement counting algorithm includes the following steps: reading AD sampling data, performing first-order difference processing on the data, calculating the average of multiple sets of difference values, comparing data extreme values, and counting with a counter.
[0038] The fetal movement induction algorithm includes the following steps: selecting the optimal channel, determining the position of the fetal head, monitoring the channel selection sequence, providing early warning of the fetal movement direction, selecting the light and sound teaching modules in the opposite direction according to the user's control instructions to induce the fetus to reverse; judging the fetal reversal status, and ending the fetal movement induction.
[0039] All modules of this system are placed on a flexible base material, and their ends can be connected by Velcro, buttons, or straps, making it convenient for pregnant women to wear.
[0040] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A wearable device based on promoting fetal movement and inducing fetal movement trajectory, the system comprising a wearable flexible substrate, characterized in that: A microphone array, a sound acquisition and detection module, a prenatal sound education storage and playback module, a prenatal light education LED array, a system control module, and a system power module are arranged on a wearable flexible substrate. The microphone array is used to acquire fetal sounds and fetal movement signals, convert these signals into voltage signals that can be processed by subsequent units, and send the signals to the sound acquisition and detection module. The sound acquisition and detection module is connected to the microphone array and the system control module. The prenatal sound education storage and playback module includes a voice integration module and a speaker array, used for downloading, storing, and playing prenatal sound education materials. The LED light array for prenatal education is used to generate orange-yellow light to stimulate the fetus. The system control module includes a microprogram controller (MCU), an AD conversion module, a display module, a voltage conversion module, and a multi-select analog switch. The AD conversion module converts the analog electrical signals acquired by the sound acquisition and detection module into digital signals that can be processed by the MCU. The display module displays the fetal heart rate per minute, fetal movement frequency per hour, and the direction of fetal movement in real time. The voltage conversion module obtains ±5V to drive the chip in the sound acquisition and detection module. The MCU controls the multi-select analog switch to select from multiple microphone arrays, speaker arrays, and LED light arrays in different directions. The system processes and displays the data sampled by the AD conversion module using algorithms. The microcontroller (MCU) uses algorithms to compare and determine the number of fetal heart sounds and fetal movements, identifies the location where the detected signal is strongest, and uses this location to determine the position of the fetal head, fetal posture, and direction of fetal movement. The MCU outputs the detected fetal heart sounds, fetal movements, and direction of fetal movement to the display module. The MCU selects whether the light and sound prenatal education modules work individually or in combination based on human control commands. It also selects the working mode and sequence of the light and sound prenatal education modules near the fetal head position to stimulate and induce the fetus to change its movement trajectory. The system power module supplies power to the entire system.
2. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to claim 1, characterized in that, The microphone array uses either an electret microphone or a dynamic microphone, and is arranged in multiple positions on the belly band. All of them are connected to the preamplifier circuit of the sound acquisition and detection module, which serves to buffer, isolate, and improve the load capacity.
3. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to claim 1, characterized in that, The sound acquisition and detection module includes a preamplifier circuit, a high-pass and low-pass filter module, a secondary amplifier module, a notch filter module, and a level-up circuit. The preamplifier circuit is used for buffering and isolation to improve the signal's carrying capacity. The high-pass and low-pass filter module is used to extract fetal heart sound signals with frequencies between 60Hz and 180Hz. The secondary amplifier module is used to amplify the amplitude of fetal heart sound signals and fetal movement signals for easier data processing. The notch filter module is used to filter out 50Hz power frequency and its 100Hz and 150Hz harmonic interference signals. The level-up circuit is used to raise the negative voltage to above 0V for AD conversion processing.
4. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to claim 1, characterized in that, The voice integration module has an SD / MMC card and a USB storage device, supports MP3 music format, and has a prenatal music playback control button to adjust the volume and change the playback order of songs as needed. The speaker array of the prenatal sound storage and playback module is arranged in multiple positions on the abdominal band.
5. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to claim 1, characterized in that, The LED light array for prenatal education consists of orange-yellow light diodes with wavelengths of 570-622nm. The LED light array is arranged in multiple positions on the abdominal belt, and the working sequence, working mode and working time of the LED light array can be controlled according to user control commands.
6. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to any one of claims 1-5, characterized in that, The microprogram controller (MCU) performs algorithm processing including an optimal channel selection algorithm, a fetal heart rate and fetal movement counting algorithm, and a fetal movement induction algorithm. The optimal channel selection algorithm includes steps such as: timer initialization, timed sampling, comparing the average values of the four channel peaks to determine the signal strength position, opening the signal acquisition channel at the corresponding position, and counting fetal heart rate and fetal movement frequency. The fetal heart rate and fetal movement counting algorithm includes steps such as: reading AD sampling data, performing first-order difference processing on the data, averaging multiple sets of difference values, comparing data extreme values, and counting with a counter. The fetal movement induction algorithm includes steps such as: selecting the optimal channel, determining the position of the fetal head, monitoring the channel selection sequence, providing early warning of the fetal movement direction, selecting the opposite direction light and sound teaching modules according to user control commands to induce fetal reversal, and determining the fetal reversal status to end fetal movement induction.
7. The wearable device based on promoting fetal movement and inducing fetal movement trajectory according to any one of claims 1-5, characterized in that, The two ends of the flexible base can be connected by Velcro, buttons, or straps.