Device for monitoring thoracic and abdominal fluctuations of human body during breathing

Abstract

The utility model discloses a device for monitoring thoracic and abdominal fluctuations during breathing of a human body. The device comprises a chest belt, an abdominal belt and a control module, magic tapes are arranged at two ends of the chest strap and the bellyband; capacitive elastic strain sensors are arranged in the chest belt and the bellyband; the control module comprises a processor unit, and a battery unit, a Bluetooth unit and a capacitance measurement unit which are connected with the processor unit; and the capacitive elastic strain sensors in the chest belt and the bellyband are electrically connected with the capacitance measuring unit respectively. Compared with a traditional wired sleep monitoring thoracico-abdominal belt, the wireless sleep monitoring thoracico-abdominal belt is lighter and more portable, data are transmitted through Bluetooth, and the activity of a user is not affected. The chest belt and the bellyband are fixed through the hook-and-loop fasteners, and compared with other fixed connection modes, the chest belt and the bellyband are more comfortable. The chest strap and the bellyband are connected through the connecting line, the height between the chest strap and the bellyband can be freely set according to people with different heights, the chest strap can be used independently, and the use mode is more flexible.

Description

Technical Field

[0001] The utility model relates to the field of human body monitoring equipment, in particular to a device for monitoring the rise and fall of the chest and abdomen of a human body during breathing. Background Art

[0002] Monitoring chest and abdominal movement plays an important diagnostic and evaluative role in sleep medicine. It not only helps identify and differentiate different types of apnea events, but also assesses breathing patterns, effort, and coordination, ultimately helping to develop and adjust personalized treatment plans and improve patients' sleep quality and overall health.

[0003] In sleep monitoring, the general practice is to use straps tied around the chest and abdomen, using a chest and abdomen belt for wired sleep monitoring. However, the wired monitoring method greatly reduces the user's free space, which leads to large errors in the monitoring results. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a device for monitoring the rise and fall of the chest and abdomen during human breathing, which solves the problem that wired sleep monitoring methods lead to large errors in monitoring results.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is:

[0006] Provided is a device for monitoring the rise and fall of the chest and abdomen during human breathing, comprising a chest strap, an abdominal strap, and a control module; Velcro is provided at both ends of the chest strap and the abdominal strap; and capacitive elastic strain sensors are provided inside the chest strap and the abdominal strap.

[0007] The control module includes a processor unit, a battery unit, a Bluetooth unit and a capacitance measuring unit connected to the processor unit; the capacitive elastic strain sensors in the chest strap and the abdominal strap are electrically connected to the capacitance measuring unit respectively.

[0008] Furthermore, the control module is fixed to the base by magnetic attraction via a magnet in the base; the control module is electrically connected to the base via a pogo pin connector; and the capacitive elastic strain sensor in the chest strap is electrically connected to the base.

[0009] Furthermore, a chest-abdomen connecting line is provided between the chest strap and the abdominal strap. Both ends of the chest-abdomen connecting line are 3.5mm headphone jacks. One end of the chest-abdomen connecting line is electrically connected to the capacitive elastic strain sensor in the abdominal strap through the 3.5mm headphone female jack, and the other end of the chest-abdomen connecting line is electrically connected to the base through the 3.5mm headphone female jack.

[0010] Furthermore, the battery unit includes a battery cell and a voltage stabilizing module, the voltage stabilizing module includes a power management chip model bq24040, pins 1 and pin 2 of the power management chip are both grounded, pin 3 of the power management chip is respectively connected to the output end of the battery cell, the positive pole of the polarized capacitor C22 and pin 4 of the power management chip; pin 5 of the power management chip is respectively connected to pin 6, pin 7, the positive pole of the polarized capacitor C20, one end of the capacitor C21 and one end of the thermistor R6 of the power management chip, and serves as the output end of the battery unit; the other end of the thermistor R6 is connected to pin 8 of the power management chip; the negative pole of the polarized capacitor C22, the negative pole of the polarized capacitor C20 and the other end of the capacitor C21 are all grounded.

[0011] Furthermore, the capacitance measurement unit includes a capacitance measurement chip of model Pcap01 and a reference capacitor. The reference capacitor and the capacitive elastic strain sensor are respectively connected to the capacitance measurement chip. The capacitance measurement chip is communicatively connected to the processor unit via an SPI interface.

[0012] Furthermore, it also includes a charging base, in which a magnet is provided and fixed to the control module by magnetic attraction. The charging base charges the control module through a pogo pin connector.

[0013] The beneficial effects of this utility model include: Compared to traditional wired chest and abdominal belts for sleep monitoring, this device is lighter and more portable, uses Bluetooth to transmit data, and does not interfere with the user's movements. Both the chest and abdominal belts are secured with Velcro, which is more comfortable than other fastening methods. The chest and abdominal belts are connected by a cable, allowing the height difference between the chest and abdominal belts to be adjusted for different heights, or the chest belt can be used alone, providing greater flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of the device;

[0015] Figure 2 This is the circuit diagram of the voltage regulator module;

[0016] Figure 3 Schematic diagram of the structure of the capacitance measurement unit.

[0017] Including: 1. Chest strap; 2. Abdominal strap; 3. Control module; 4. Chest and abdominal connecting line; 5. Velcro; 6. Base. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations conceived using the present invention are protected.

[0019] like Figure 1 As shown, the device for monitoring the rise and fall of the chest and abdomen during human breathing includes a chest belt 1, an abdominal belt 2, and a control module 3; Velcro 5 is provided at both ends of the chest belt 1 and the abdominal belt 2; and capacitive elastic strain sensors are provided inside the chest belt 1 and the abdominal belt 2.

[0020] The control module 3 includes a processor unit, and a battery unit, a Bluetooth unit and a capacitance measuring unit connected to the processor unit; the capacitive elastic strain sensors in the chest strap 1 and the abdominal strap 2 are electrically connected to the capacitance measuring unit respectively.

[0021] The control module 3 is magnetically fixed to the base 6 through the magnet in the base 6; the control module 3 is electrically connected to the base 6 through the pogopin connector; the capacitive elastic strain sensor in the chest strap 1 is electrically connected to the base 6 and transmitted to the control module 3.

[0022] A chest-abdomen connection cable 4 is provided between the chest strap 1 and the abdominal strap 2. Both ends of the cable have 3.5mm headphone jacks. One end of the cable is electrically connected to the capacitive elastic strain sensor in the abdominal strap 2 via the 3.5mm headphone jack, while the other end is electrically connected to the base 6 via the 3.5mm headphone jack. The signal from the capacitive elastic strain sensor in the abdominal strap 2 is transmitted to the control module 3 via the cable 4.

[0023] The battery unit includes a battery cell and a voltage regulator module, such as Figure 2 As shown, the voltage stabilizing module includes a power management chip of model bq24040, pins 1 and 2 of the power management chip are both grounded, and pin 3 of the power management chip is respectively connected to the output end of the battery cell, the positive electrode of the polarized capacitor C22 and pin 4 of the power management chip; pin 5 of the power management chip is respectively connected to pin 6, pin 7, the positive electrode of the polarized capacitor C20, one end of the capacitor C21 and one end of the thermistor R6 of the power management chip, and serves as the output end of the battery unit; the other end of the thermistor R6 is connected to pin 8 of the power management chip; the negative electrode of the polarized capacitor C22, the negative electrode of the polarized capacitor C20 and the other end of the capacitor C21 are all grounded.

[0024] The voltage regulator module stabilizes the voltage at 3.3V. During charging, it also monitors the temperature through the thermistor R6. When the temperature reaches the set threshold temperature, protection is performed.

[0025] like Figure 3 As shown, the capacitance measurement unit includes a capacitance measurement chip (Pcap01) and a reference capacitor. The reference capacitor and capacitive elastic strain sensor are connected to the capacitance measurement chip, which communicates with the processor unit via an SPI interface. The capacitance measurement chip measures capacitance based on the charge and discharge time of the capacitor. The measured capacitor is first charged to 3.3V and then discharged through a resistor until it reaches the reference capacitance. The time is recorded as t. If the discharge time of the reference capacitor C0 is t0, then the measured capacitance = C0 / t0*t.

[0026] In this embodiment, the capacitance measurement unit can receive, amplify, and analyze the capacitance value output by the sensor, converting it into a digital signal for analysis and display. The capacitance sampling rate can be set to 25Hz, 50Hz, 100Hz, 200Hz, and 400Hz.

[0027] The device also includes a charging base, which is equipped with a magnet and fixed to the control module 3 by magnetic attraction. The charging base charges the control module 3 through a pogo pin connector, and the charging voltage is 5V 1A.

[0028] During implementation, when chest strap 1 or abdominal strap 2 is stretched, the internal capacitance changes; the greater the stretch, the greater the capacitance. Velcro 5 is easily adjustable and secure, allowing the user to adjust the tightness. The processor unit transmits the capacitance signal measured by the capacitance measurement unit via the Bluetooth unit. The Bluetooth unit uses the Bluetooth Low Energy (BLE) protocol to transmit the capacitance data of chest strap 1 and abdominal strap 2 via Bluetooth, extending the device's usability and providing real-time data to the host system.

[0029] In summary, compared to traditional wired sleep monitoring chest and abdominal belts, this new model is more lightweight and portable, uses Bluetooth to transmit data, and does not interfere with the user's movements. Both the chest and abdominal belts are secured with Velcro, which is more comfortable than other fastening methods. The chest and abdominal belts are connected by a cable, allowing for flexible adjustment of the height between the chest and abdominal belts for different heights, or for the chest belt to be used alone, providing greater flexibility.

Claims

1. A device for monitoring the rise and fall of the chest and abdomen during human breathing, characterized in that: It includes a chest strap, an abdominal strap and a control module; both ends of the chest strap and the abdominal strap are provided with Velcro; both the chest strap and the abdominal strap are provided with capacitive elastic strain sensors; The control module includes a processor unit, a battery unit, a Bluetooth unit and a capacitance measuring unit connected to the processor unit; the capacitive elastic strain sensors in the chest strap and the abdominal strap are electrically connected to the capacitance measuring unit respectively.

2. The device for monitoring the rise and fall of the chest and abdomen during human breathing according to claim 1, characterized in that: The control module is fixed to the base by magnetic attraction through a magnet in the base; the control module is electrically connected to the base through a pogo pin connector; and the capacitive elastic strain sensor in the chest strap is electrically connected to the base.

3. The device for monitoring the rise and fall of the chest and abdomen during human breathing according to claim 2, characterized in that: A chest-abdomen connecting line is also provided between the chest strap and the abdominal strap. Both ends of the chest-abdomen connecting line are 3.5mm headphone jacks. One end of the chest-abdomen connecting line is electrically connected to the capacitive elastic strain sensor in the abdominal strap through the 3.5mm headphone female jack, and the other end of the chest-abdomen connecting line is electrically connected to the base through the 3.5mm headphone female jack.

4. The device for monitoring the rise and fall of the chest and abdomen during human breathing according to claim 1, characterized in that: The battery unit includes a battery cell and a voltage stabilizing module. The voltage stabilizing module includes a power management chip model bq24040. Pins 1 and 2 of the power management chip are both grounded. Pin 3 of the power management chip is respectively connected to the output end of the battery cell, the positive pole of the polarized capacitor C22 and pin 4 of the power management chip; pin 5 of the power management chip is respectively connected to pin 6, pin 7, the positive pole of the polarized capacitor C20, one end of the capacitor C21 and one end of the thermistor R6 of the power management chip, and serves as the output end of the battery unit; the other end of the thermistor R6 is connected to pin 8 of the power management chip; the negative pole of the polarized capacitor C22, the negative pole of the polarized capacitor C20 and the other end of the capacitor C21 are all grounded.

5. The device for monitoring the rise and fall of the chest and abdomen during human breathing according to claim 1, characterized in that: The capacitance measurement unit includes a capacitance measurement chip of model Pcap01 and a reference capacitor. The reference capacitor and the capacitive elastic strain sensor are respectively connected to the capacitance measurement chip. The capacitance measurement chip is connected to the processor unit through an SPI interface.

6. The device for monitoring the rise and fall of the chest and abdomen during human breathing according to claim 1, characterized in that: It also includes a charging base, which is equipped with a magnet and fixed to the control module by magnetic attraction. The charging base charges the control module through a pogo pin connector.

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