Respiration monitoring device and working method thereof

Abstract

The invention discloses a respiration monitoring device and a working method thereof, and relates to the technical field of lung function monitoring, the respiration monitoring device comprises a flexible pectoral girdle and a flexible shoulder girdle, one end of the flexible shoulder girdle is connected with the flexible pectoral girdle in a sewing mode, a thoracic fluctuation collecting mechanism is installed on one side of the front end of the flexible pectoral girdle, and the thoracic fluctuation collecting mechanism is connected with the flexible pectoral girdle in a sewing mode. A flexible shoulder strap is installed on one side of the front end of the flexible chest strap, a lung sound collecting mechanism is installed on the other side of the front end of the flexible chest strap, a control box is installed on the outer wall of the flexible shoulder strap, a wire is installed at the upper end of the control box, and a breath sound collecting mechanism is installed at one end of the wire. And lung function monitoring can be realized only by inhaling and exhaling air, so that the problems of single measurement parameter and low accuracy are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lung function monitoring, and in particular to a respiratory monitoring device and a working method thereof. Background Art

[0002] Patients diagnosed with asthma, chronic obstructive pulmonary disease, etc., during follow-up visits or health management, as well as patients undergoing lung surgery or lung transplantation, usually rely on pulmonary function monitors to measure the volume of air inhaled and exhaled by the lungs, thereby performing lung function tests and tracking lung health.

[0003] Current pulmonary function monitoring devices, such as a turbine-type pulmonary function monitor mentioned in announcement number CN220193012U, include an upper cover, an outer shell, an air inlet pipe and an adjusting pipe. A first assembly pipe is provided on the top of the upper cover, a second assembly pipe is provided on the top of the outer shell, a first turbine fan is provided inside the second assembly pipe, one end of the air inlet pipe is inserted into the first assembly pipe, one end of the adjusting pipe is inserted into the second assembly pipe, an air outlet is provided on the middle outer surface of the adjusting pipe, a swivel is provided on the outer surface of the other end of the adjusting pipe, an annular array of adjustment holes with decreasing areas are provided on the outer surface of one end of the swivel, and a cover plate is provided on the end of the adjusting pipe close to the swivel.

[0004] However, the existing lung function monitoring device cannot perform real-time monitoring and can only monitor lung function through inhaled and exhaled gases. The measurement parameters are single and the accuracy is low. Therefore, we provide a respiratory monitoring device and a working method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a respiratory monitoring device and a working method thereof, so as to solve the problem that the existing lung function monitoring device proposed in the above background technology cannot perform real-time monitoring, can only realize lung function monitoring through inhaled and exhaled gas, has a single measurement parameter and low accuracy.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a respiratory monitoring device, comprising a flexible chest strap and a flexible shoulder strap, one end of the flexible shoulder strap is sewn and connected to the flexible chest strap, a chest rise and fall collection mechanism is installed on one side of the front end of the flexible chest strap, a lung sound collection mechanism is installed on the other side of the front end of the flexible chest strap, a control box is installed on the outer wall of the flexible shoulder strap, a wire is installed on the upper end of the control box, and a respiratory sound collection mechanism is installed on one end of the wire.

[0007] Preferably, the chest rise and fall collection mechanism includes a first positioning plate, a lower shell and an upper shell, the first positioning plate is arranged on the outer wall of the flexible chest strap, the lower shell is arranged on the inner wall of the flexible chest strap, and the four corners of the first positioning plate are connected to the lower shell by screws, the upper shell is arranged above the lower shell, and the four corners of the lower shell are connected to the upper shell by springs, a cross pressure groove is arranged on the upper surface of the lower shell, a pressure transmission column is installed at the middle position of the lower end of the upper shell, and flexible film pressure-sensitive sensors are arranged on all sides of the outer wall of the pressure transmission column, and the flexible film pressure-sensitive sensors are distributed in a cross shape, and a fitting cover is arranged at the upper end of the upper shell.

[0008] Preferably, a transmission column limiting groove is arranged at a middle position inside the cross pressure groove, and a limiting column is arranged on the inner side of the spring.

[0009] Preferably, the lung sound collection mechanism includes a second positioning plate, a base and a heart sound sensor, the second positioning plate is arranged on the outer wall of the flexible chest strap, the base is arranged on the inner wall of the flexible chest strap, and the four corners of the second positioning plate are connected to the base by screws, and the heart sound sensor is arranged at the lower end of the base.

[0010] Preferably, the respiratory sound collection mechanism includes a terminal socket, a swivel arm support, a first swivel arm, a second swivel arm, a collector and a trumpet-shaped microphone, the swivel arm support is mounted on the outer wall of the terminal socket, the first swivel arm is mounted on one end of the terminal socket, the second swivel arm is mounted on one end of the first swivel arm, the collector is mounted on one end of the second swivel arm, and the trumpet-shaped microphone is mounted on one end of the collector.

[0011] Preferably, the arm support, the first arm, the second arm and the collector are rotationally connected via a damping shaft.

[0012] Preferably, strap connection buckles are provided on both sides of the wiring seat, and the strap connection buckles on both sides are inclined inwards.

[0013] Preferably, one end of the flexible chest strap is installed with a fold, and the other end of the flexible chest strap is installed with Velcro, the Velcro penetrates and extends to the inside of the fold and is bonded to the flexible chest strap, a tightening buckle is installed on the outer wall of the other end of the flexible shoulder strap, a connecting belt is installed on the outer wall of the tightening buckle, and one end of the connecting belt is sewn and connected to the inner wall of the flexible chest strap.

[0014] Preferably, an AD conversion module, a main control module, a power supply module, a WIFI module and an FPGA code module are installed inside the control box.

[0015] Preferably, a method for using a respiratory monitoring device and a working method thereof comprises the following steps:

[0016] Step 1: The monitored person first wears the chest rise and fall collection mechanism and the lung sound collection mechanism on the device on the chest through the flexible chest strap and the flexible shoulder strap, and then wears it on the head using the elastic straps on the strap connection buckles on both sides of the respiratory sound collection mechanism, and rotates the horn-shaped microphone to the mouth by rotating the first rotating arm and the second rotating arm, thus completing the wearing of the device;

[0017] Step 2: Start the device, collect the intensity of breathing sounds through the trumpet-shaped microphone placed at the mouth, collect the changes of chest wall through the flexible film pressure-sensitive sensor placed at the chest, and collect lung sounds through the heart sound sensor placed at the front of the lungs in the chest, so as to obtain three physiological signals from different parts of the human body. Each signal is converted into a digital signal through the AD conversion module after passing through the corresponding conditioning circuit;

[0018] Step 3: The FPGA code module controls three AD chips in parallel to read, integrate and classify the data;

[0019] Step 4: After integration, the FPGA code module further processes the data across clocks, packages it, and sends it to the host computer software through the WIFI module by controlling the data flow;

[0020] Step 5: The host computer unpacks and classifies the data, restores the data according to the corresponding data calculation method, and visualizes and analyzes the data.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention measures respiratory disorders by means of multi-parameter monitoring, which is more accurate in judgment accuracy, and independently designs a mechanical structure suitable for chest pressure measurement and respiratory sound measurement, which can improve the accuracy and response speed of measurement. Moreover, the entire device adopts flexible and retractable materials and is designed as a wearable structure, which can more accurately set the measurement points for long-term measurement, and long-term use will not have a great physiological impact on the measurer, thus solving the problem that the existing lung function monitoring device cannot perform real-time monitoring, can only realize lung function monitoring through inhaled and exhaled gas, has a single measurement parameter and low accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the chest rise and fall collection mechanism of the present invention;

[0026] Figure 4It is a front structural schematic diagram of the chest rise and fall collection mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the respiratory sound collection mechanism of the present invention;

[0028] Figure 6 It is the principle diagram of the thoracic pressure collection circuit of the present invention;

[0029] Figure 7 The circuit diagram of the heart sound sensor of the present invention;

[0030] Figure 8 This is a schematic diagram of the lung sound collection circuit of the present invention;

[0031] Fig. 9 It is the principle diagram of the breathing sound collection circuit of the present invention;

[0032] Fig.10 The internal structure diagram of AD9280 of the present invention;

[0033] Fig.11 It is the FPGA principle diagram of the present invention;

[0034] Fig.12 FPGA code design block diagram for the present invention;

[0035] In the figure: 1. flexible chest strap; 2. folding fold; 3. Velcro; 4. flexible shoulder strap; 5. tightening buckle; 6. connecting belt; 7. chest rise and fall collection mechanism; 701. first positioning plate; 702. lower shell; 703. pressure transmission column; 704. spring; 705. upper shell; 706. limiting column; 707. flexible film pressure-sensitive sensor; 708. cross pressure groove; 709. fitting cover; 710. transmission column limiting groove; 8. lung sound collection mechanism; 801. second positioning plate; 802. base; 803. heart sound sensor; 9. control box; 10. wire; 11. respiratory sound collection mechanism; 111. terminal block; 112. strap connecting buckle; 113. rotating arm support; 114. first rotating arm; 115. second rotating arm; 116. collector; 117. horn-shaped microphone; 118. damping shaft. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] See also Figure 1-12An embodiment of the present invention is: a respiratory monitoring device, including a flexible chest strap 1 and a flexible shoulder strap 4, one end of the flexible shoulder strap 4 is sewn and connected to the flexible chest strap 1, a chest rise and fall collection mechanism 7 is installed on one side of the front end of the flexible chest strap 1, a lung sound collection mechanism 8 is installed on the other side of the front end of the flexible chest strap 1, a control box 9 is installed on the outer wall of the flexible shoulder strap 4, a wire 10 is installed on the upper end of the control box 9, and a respiratory sound collection mechanism 11 is installed on one end of the wire 10.

[0038] See also Figure 3 The chest rise and fall collection mechanism 7 includes a first positioning plate 701, a lower shell 702 and an upper shell 705. The first positioning plate 701 is arranged on the outer wall of the flexible chest belt 1, the lower shell 702 is arranged on the inner wall of the flexible chest belt 1, and the four corners of the first positioning plate 701 are connected to the lower shell 702 by screws, the upper shell 705 is arranged above the lower shell 702, and the four corners of the lower shell 702 are connected to the upper shell 705 by springs 704. A cross pressure groove 708 is arranged on the upper surface of the lower shell 702, and a pressure transmission column 703 is installed at the middle position of the lower end of the upper shell 705. Flexible film pressure-sensitive sensors 707 are arranged on the outer wall of the pressure transmission column 703, and the flexible film pressure-sensitive sensors 707 are distributed in a cross shape. A fitting cover 709 is arranged on the upper end of the upper shell 705, a transmission column limiting groove 710 is arranged at the middle position inside the cross pressure groove 708, and a limiting column 706 is arranged on the inner side of the spring 704;

[0039] Since the chest rises and falls in a reciprocating motion, the change in the force applied to the surface of the flexible film pressure-sensitive sensor 707 during the forward and backward motion is converted into a change in the sensor resistance, and then the change in resistance is converted into a change in voltage, such as Figure 1 and Figure 3 As shown, the flexible chest strap 1 is worn on the chest, and the upper shell 705 is driven to move by the forward and backward movement of the chest during breathing, so that the flexible film pressure-sensitive sensor 707 is pressed into the cross pressure groove 708, and the springs 704 installed at the four corners are responsible for rebounding the upper shell 705 when the chest is retracted. This design makes the resistance value of the pressure sensor increase and decrease respectively when the chest expands inside and outside;

[0040] The flexible film pressure-sensitive sensor 707 is composed of a polyester film with excellent comprehensive mechanical properties, a highly conductive material and a nano-level pressure-sensitive material. The top layer is a flexible film and a composite pressure-sensitive layer, and the bottom layer is a flexible film and a composite conductive circuit. The two are bonded and isolated from the sensing area by double-sided adhesive. When the sensing area is pressurized, the circuits that are disconnected from each other at the bottom layer will be connected through the top pressure-sensitive layer, so that the resistance output value of the port changes with the pressure, realizing pressure detection.

[0041] Since the pressure sensor has converted the pressure into a change in resistance, it is converted into a voltage value by using a resistor series sampling method. Since the pressure sensor is affected by mechanical force during the sampling process, a voltage follower circuit needs to be added before the collected voltage is sent to the AD to isolate the front and back stages, reduce the interference between the front and back stages, and improve the collection quality. The low-noise LM358 op amp is used to form a voltage follower circuit, and a variable resistor is used in the last stage to adjust the voltage value.

[0042] When there is no pressure, the maximum resistance value is 10K. By connecting a 10k resistor in series, the conversion formula is:

[0043]

[0044] V O is the conversion voltage, R S is the resistance of the pressure sensor, R is the series resistance, and the circuit schematic is as follows Figure 6 shown.

[0045] Further, the lung sound collection mechanism 8 includes a second positioning plate 801, a base 802 and a heart sound sensor 803, the second positioning plate 801 is arranged on the outer wall of the flexible chest belt 1, the base 802 is arranged on the inner wall of the flexible chest belt 1, and the four corners of the second positioning plate 801 are connected to the base 802 by screws, and the heart sound sensor 803 is arranged at the lower end of the base 802;

[0046] Since the lung sound signal is weak, HKY-06E heart sound sensor 803 is used for collection. The heart sound sensor 803 uses a capacitive micro-sound sensitive element to collect heart beats and other surface arterial beats, and then processes them through a highly integrated signal circuit to output a low-impedance audio voltage signal, such as Figure 7 The internal circuit diagram is shown.

[0047] Since the voltage output range collected by the heart sound sensor 803 is within the range of -2.5 to +2.5, and the input signal range of the AD chip used is 0 to 2V, a difference circuit composed of a low-noise operational amplifier is used to achieve proportional signal translation into a positive signal in the range of 0 to 2V, such as Figure 8 As shown, the reference voltage of the AD chip is attenuated to -1V through an inverting amplifier and then sent to the N-terminal of the difference circuit, while the output voltage of the lung sound sensor is input to the P-terminal of the difference circuit through a variable resistor; the calculation formula is as follows:

[0048] U O =2U S +1

[0049] U o is the final conversion voltage, U s Output voltage for the pressure sensor.

[0050] See also Figure 5 The respiratory sound collection mechanism 11 includes a wiring base 111, a rotating arm support 113, a first rotating arm 114, a second rotating arm 115, a collector 116 and a horn-shaped microphone 117. The rotating arm support 113 is installed on the outer wall of the wiring base 111, the first rotating arm 114 is installed at one end of the wiring base 111, the second rotating arm 115 is installed at one end of the first rotating arm 114, the collector 116 is installed at one end of the second rotating arm 115, and the horn-shaped microphone 117 is installed at one end of the collector 116. The rotating arm support 113, the first rotating arm 114, the second rotating arm 115 and the collector 116 are rotatably connected by a damping shaft 118. Both sides of the wiring base 111 are provided with strap connection buckles 112, and the strap connection buckles 112 on both sides are inclined inwardly;

[0051] The frequency range of human voice is mainly concentrated in 20HZ-20KHZ, so the collected sound signal only needs to extract the low-frequency component (20HZ-5000HZ), and the electret microphone is used to convert the sound signal into an electrical signal. Since the amplitude after conversion is at the millivolt level, the sound signal needs to be amplified 50 times by a remote amplifier and then filtered by a second-order low-pass filter;

[0052] like Fig. 9 As shown, the filter cutoff frequency is set to 500HZ, and the calculation formula for the upper limit cutoff frequency of the second-order filter is:

[0053]

[0054] The calculation results show that R = 120KΩ, C = 1nF. At this time, f h ≈496Hz.

[0055] Furthermore, a fold 2 is installed at one end of the flexible chest strap 1, and a Velcro 3 is installed at the other end of the flexible chest strap 1. The Velcro 3 penetrates and extends to the inside of the fold 2 and is bonded to the flexible chest strap 1. A tightening buckle 5 is installed on the outer wall of the other end of the flexible shoulder strap 4, and a connecting belt 6 is installed on the outer wall of the tightening buckle 5, and one end of the connecting belt 6 is sewn and connected to the inner wall of the flexible chest strap 1.

[0056] Furthermore, the control box 9 is internally installed with an AD conversion module, a main control module, a power module, a WIFI module and an FPGA code module;

[0057] Since the frequency ranges sampled by the three signals are similar and the amplitudes are all within 0-2V after conversion, the AD9280 chip is used. The AD9280 is a monolithic, single-power, 8-bit, 32MSPS analog-to-digital converter with an on-chip sample-and-hold amplifier and voltage reference. The AD conversion module uses a multi-stage differential pipeline architecture with a data rate of 32MSPS and guarantees that there will be no code loss over the entire operating temperature range.

[0058] like Fig.10 The figure shows the schematic diagram of AD9280. After configuring its external mode, the three signals are collected at a sampling rate of 3KHZ. At the same time, since some operational amplifier circuits require a reference voltage, AD9280 also provides a 2V output reference voltage. When taking this reference voltage, it must first pass through a voltage follower circuit to isolate the signal.

[0059] Fig.11 The schematic diagram of the main control and power supply part. The FPGA of the main control part uses the EP4CE10E22C8 chip. The chip has many logic units and rich on-chip resources. The clock frequency works at 50MHz. The chip mainly includes the power supply part, FLASH, crystal oscillator, reserved IO port, switch and LED. The power supply part mainly uses 5V, 3.3V and 2.5V to power the FPGA chip. In order to ensure the stability of FPGA operation, filter capacitors are added to the power ports for filtering. FLASH is used as a memory for writing programs, and the crystal oscillator provides an external 50MHZ working clock for FPGA. The chip uses the JTAG program writing method to write and debug programs.

[0060] The power supply part adopts dual power supply of USB and battery. When USB is used for power supply, the battery is charged. At this time, the DC-DC part is completely powered by USB, converting 5V into 3.3V, 2.5V, and -5V to power each module. When USB is not connected, the battery is connected to the circuit for power supply.

[0061] The WIFI module is used as the information interaction module between the host computer and the slave computer. The Wi-Fi module model is ESP8266-01. The module supports IEEE802.11b / g / n standards, works in the 2.4GHz frequency band, and provides reliable wireless connection. The module has built-in 512KB Flash storage and 80KB SRAM, and supports communication with other microcontrollers through the UART interface. The host computer is configured in master mode and the slave computer is configured in slave mode. The configuration data is configured by the host computer and the slave computer through AT commands during power-on initialization. The bit rate of this design is 460800.

[0062] like Fig.12The following is the FPGA code block diagram. The code is mainly divided into three modules: drive module, data synthesis module and instruction receiving and processing module. The working mode adopted by the device is to send command signals to the lower computer to control the switch of data acquisition through the upper computer after the automatic configuration is completed after power-on. The specific working process is as follows:

[0063] The device is powered on, and the lower computer starts to automatically configure the slave WIFI module and initialize the AD chip. The upper computer opens the serial port channel, configures the master WIFI module, and then starts to search for the slave WIFI module signal and connect;

[0064] After the WIFI module is successfully connected, both the upper and lower computers will give a sign signal;

[0065] At this time, the upper computer presses the start measurement button, and after the lower computer instruction receiving and processing module receives the data, it will send the corresponding instruction signal to the data integration module and the drive module according to the instruction type. At this time, the data integration module will clear the FIFO buffer to prepare for storing data, and the drive module will send an AD signal to start measurement;

[0066] After the measurement starts, the data of the three channels will be stored in the corresponding FIFO first. The data integration module will determine the data volume through the flag signal of the FIFO, and control the data to be packaged and sent to the sending module for transmission at a certain time interval and format;

[0067] The host computer receives the data, unpacks, classifies, calculates, and displays it visually;

[0068] The stop command is similar to the above. The command receiving module is mainly used to distinguish different command signals sent by the host computer and send control signals for different modules.

[0069] Further, a method for using a respiratory monitoring device and a working method thereof comprises the following steps:

[0070] Step 1: The monitored person first wears the chest rise and fall collection mechanism 7 and the lung sound collection mechanism 8 on the device on the chest through the flexible chest strap 1 and the flexible shoulder strap 4, and then wears it on the head using the elastic straps on the strap connection buckles 112 on both sides of the respiratory sound collection mechanism 11, and rotates the first rotating arm 114 and the second rotating arm 115 to rotate the horn-shaped microphone 117 to the mouth, thus completing the wearing of the device;

[0071] Step 2: Start the device, collect the intensity of breathing sound through the trumpet-shaped microphone 117 placed at the mouth, collect the changes of chest wall through the flexible film pressure-sensitive sensor 707 placed at the chest, and collect lung sound through the heart sound sensor 803 placed at the front of the lungs in the chest, so as to obtain three physiological signals from different parts of the human body, and each signal is converted into a digital signal through the AD conversion module after passing through the corresponding conditioning circuit;

[0072] Step 3: The FPGA code module controls three AD chips in parallel to read, integrate and classify the data;

[0073] Step 4: After integration, the FPGA code module further processes the data across clocks, packages it, and sends it to the host computer software through the WIFI module by controlling the data flow;

[0074] Step 5: The host computer unpacks and classifies the data, restores the data according to the corresponding data calculation method, and visualizes and analyzes the data.

[0075] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A respiratory monitoring device, comprising a flexible chest strap (1) and a flexible shoulder strap (4), characterized in that: One end of the flexible shoulder strap (4) is sutured and connected to the flexible chest strap (1); a chest rise and fall collecting mechanism (7) is installed on one side of the front end of the flexible chest strap (1); a lung sound collecting mechanism (8) is installed on the other side of the front end of the flexible chest strap (1); a control box (9) is installed on the outer wall of the flexible shoulder strap (4); a wire (10) is installed on the upper end of the control box (9); and a respiratory sound collecting mechanism (11) is installed on one end of the wire (10).

2. A respiratory monitoring device according to claim 1, characterized in that: The chest rise and fall collecting mechanism (7) comprises a first positioning plate (701), a lower shell (702) and an upper shell (705), wherein the first positioning plate (701) is arranged on the outer wall of the flexible chest belt (1), the lower shell (702) is arranged on the inner wall of the flexible chest belt (1), and the four corners of the first positioning plate (701) are connected to the lower shell (702) by screws, and the upper shell (705) is arranged above the lower shell (702), and the four corners of the lower shell (702) are connected to the lower shell (702). The lower shell (702) is connected to the upper shell (705) via a spring (704), a cross pressure groove (708) is provided on the upper surface of the lower shell (702), a pressure transmission column (703) is installed at the middle position of the lower end of the upper shell (705), flexible film pressure-sensitive sensors (707) are provided on the outer wall of the pressure transmission column (703) on all sides, and the flexible film pressure-sensitive sensors (707) are distributed in a cross shape, and a fitting cover (709) is provided at the upper end of the upper shell (705).

3. A respiratory monitoring device according to claim 2, characterized in that: A transmission column limiting groove (710) is provided at a middle position inside the cross pressure groove (708), and a limiting column (706) is provided on the inner side of the spring (704).

4. A respiratory monitoring device according to claim 3, characterized in that: The lung sound collection mechanism (8) comprises a second positioning plate (801), a base (802) and a heart sound sensor (803); the second positioning plate (801) is arranged on the outer wall of the flexible chest belt (1); the base (802) is arranged on the inner wall of the flexible chest belt (1); the four corners of the second positioning plate (801) are connected to the base (802) by screws; and the heart sound sensor (803) is arranged at the lower end of the base (802).

5. A respiratory monitoring device according to claim 4, characterized in that: The respiratory sound collection mechanism (11) comprises a wiring socket (111), a rotating arm support (113), a first rotating arm (114), a second rotating arm (115), a collector (116) and a horn-shaped microphone (117); the rotating arm support (113) is mounted on the outer wall of the wiring socket (111); the first rotating arm (114) is mounted on one end of the wiring socket (111); the second rotating arm (115) is mounted on one end of the first rotating arm (114); the collector (116) is mounted on one end of the second rotating arm (115); and the horn-shaped microphone (117) is mounted on one end of the collector (116).

6. A respiratory monitoring device according to claim 5, characterized in that: The rotating arm support (113), the first rotating arm (114), the second rotating arm (115) and the collector (116) are rotationally connected via a damping rotating shaft (118).

7. A respiratory monitoring device according to claim 6, characterized in that: Both sides of the wiring seat (111) are provided with binding strap connection buckles (112), and the binding strap connection buckles (112) on both sides are arranged to be inclined inwards.

8. A respiratory monitoring device according to claim 7, characterized in that: A folding buckle (2) is installed at one end of the flexible chest strap (1), and a Velcro (3) is installed at the other end of the flexible chest strap (1). The Velcro (3) penetrates and extends to the inside of the folding buckle (2) and is bonded and connected to the flexible chest strap (1). A tightening buckle (5) is installed on the outer wall of the other end of the flexible shoulder strap (4), and a connecting belt (6) is installed on the outer wall of the tightening buckle (5), and one end of the connecting belt (6) is sewn and connected to the inner wall of the flexible chest strap (1).

9. A respiratory monitoring device according to claim 8, characterized in that: An AD conversion module, a main control module, a power supply module, a WIFI module and an FPGA code module are installed inside the control box (9).

10. A working method of a respiratory monitoring device, implemented based on the respiratory monitoring device of claim 9, characterized in that: The following steps are involved: Step 1: The monitored person first wears the chest rise and fall collection mechanism (7) and the lung sound collection mechanism (8) on the device on the chest through the flexible chest strap (1) and the flexible shoulder strap (4), and then wears it on the head using the elastic straps on the strap connection buckles (112) on both sides of the respiratory sound collection mechanism (11), and rotates the first rotating arm (114) and the second rotating arm (115) to rotate the horn-shaped microphone (117) to the mouth, thus completing the wearing of the device; Step 2: Start the device, collect the intensity of breathing sound through the trumpet-shaped microphone (117) placed on the mouth, collect the change of chest wall through the flexible film pressure-sensitive sensor (707) placed on the chest, and collect lung sound through the heart sound sensor (803) placed on the front side of the lung in the chest, so as to obtain three physiological signals from different parts of the human body, and each signal is converted into a digital signal through the AD conversion module after passing through the corresponding conditioning circuit; Step 3: The FPGA code module controls three AD chips in parallel to read, integrate and classify the data; Step 4: After integration, the FPGA code module further processes the data across clocks, packages it, and sends it to the host computer software through the WIFI module by controlling the data flow; Step 5: The host computer unpacks and classifies the data, restores the data according to the corresponding data calculation method, and visualizes and analyzes the data.

Images