A portable blood oxygen monitoring device for use in anti-hypoxic training

Abstract

The utility model discloses a kind of portable blood oxygen monitoring devices for under anti-hypoxia training, belong to wearable embedded system technical field, including infrared sensor, acquisition module, central control module, storage module, touch screen module, vibration motor circuit and battery module, solved in anti-hypoxia training, blood oxygen data real-time monitoring difficulty, unstable wireless transmission and the technical problem of inconvenient data storage, the utility model integrates acquisition, processing, storage, display module in one, small, wear light, built-in 0.96 inch touch screen, support blood oxygen value, pulse rate, battery capacity real-time display and bluetooth state visual, can be communicated wirelessly with host computer by bluetooth 5.0, support local data cache, support battery low-power consumption management, cooperate 3.6V micro lithium battery, endurance time can reach 10 hours, support vibration motor circuit alarm, can trigger alarm when blood oxygen value is below threshold value.

Description

Technical Field

[0001] This utility model belongs to the field of wearable embedded system technology, and in particular relates to a portable blood oxygen monitoring device for hypoxia-resistant training. Background Technology

[0002] Currently, during hypoxia adaptation training, blood oxygen saturation is monitored throughout the entire process. During hypoxia training, trainees are required to perform physical movements such as panel operation and lever simulation.

[0003] In this training scenario, blood oxygen saturation is typically monitored using medical monitors or pulse oximeters. This monitoring method usually employs a finger clip-on pulse oximeter for data collection.

[0004] The existing technology has the following shortcomings:

[0005] The monitoring sensor is wired, which restricts the range of hand movement.

[0006] The monitoring sensor needs to be clipped to the fingertip. If the hand moves, the monitoring sensor may fall off, resulting in the inability to monitor in real time. Due to the influence of the nail-type monitoring wearing method, it is not conducive to finger bending and finger manipulation activities, thus restricting hand movement.

[0007] Wearable sensors lack data storage capabilities, making it impossible to support long-term training records and playback analysis. Utility Model Content

[0008] The purpose of this invention is to provide a portable blood oxygen monitoring device for hypoxia-resistant training, which solves the technical problems of difficulty in real-time monitoring of blood oxygen data, unstable wireless transmission, and inconvenient data storage during hypoxia-resistant training.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A portable blood oxygen monitoring device for hypoxia-resistant training includes an infrared sensor, a data acquisition module, a central control module, a storage module, a touch screen module, a vibration motor circuit, and a battery module. The infrared sensor is connected to the data acquisition module, and the data acquisition module, storage module, and touch screen module are all connected to the central control module. The battery module supplies power to the infrared sensor, data acquisition module, central control module, storage module, vibration motor circuit, and touch screen module.

[0011] The central control module has a built-in Bluetooth module, which communicates wirelessly with the host computer through an antenna circuit.

[0012] The vibration motor circuit is connected to the central control module.

[0013] Preferably, the infrared sensor includes an infrared receiver LED3, an infrared transmitter LED1, and an infrared transmitter LED2. The acquisition module includes an acquisition chip U1 and its peripheral circuits. The positive terminal of the infrared receiver LED3 is connected to the INN pin of the acquisition chip U1, and the negative terminal is connected to the INP pin of the acquisition chip U1. The capacitor C1 is connected in parallel with the infrared receiver LED3.

[0014] The positive terminal of the infrared emitter LED1 is connected to the TXN pin of the acquisition chip U1, and the negative terminal is connected to the TXP pin of the acquisition chip U1.

[0015] The positive terminal of the infrared emitter LED2 is connected to the TXP pin of the acquisition chip U1, and the negative terminal is connected to the TXN pin of the acquisition chip U1.

[0016] The RESET, ADC_RDY, SPISTE, SPISOMIO, SPISOMI, SCLK, PD_ALM, LED_ALM, DLAG_END, and AFE_PND pins of the acquisition chip U1 are respectively connected to different I / O ports of the central control module.

[0017] Preferably, the acquisition chip U1 is model AEF4400.

[0018] Preferably, the storage module is model AT24C02, and the storage module is connected to the central control module via an I2C bus.

[0019] Preferably, the central control module includes a main controller U2 and its peripheral circuits; the main controller U2 is an nRF52840.

[0020] The antenna circuit includes capacitor C43, capacitor C16, inductor L4, capacitor C42, inductor L70, and antenna RF. Antenna RF is connected to pin 1 of capacitor C42. Pin 2 of capacitor C42 is connected to pin 1 of inductor L4. Pin 2 of inductor L4 is connected to the ANT pin of main controller U2. Pins 1 and 2 of inductor L4 are connected to ground through capacitor C16 and capacitor C43, respectively. The node where capacitor C43 is connected to ground is also connected to the VSS_PA pin of main controller U1. Pin 1 of capacitor C42 is also connected to ground through inductor L16.

[0021] The vibration motor circuit includes a vibration motor T1, a transistor Q5, a resistor R41, and a resistor R6. The positive terminal of the vibration motor's power supply is connected to the battery module, and the negative terminal is connected to the collector of the transistor Q5. The emitter of the transistor Q5 is connected to ground, and the base is connected to an I / O port of the main controller U2 through the resistor R41. One end of the resistor R6 is connected to the base of the transistor Q5, and the other end is connected to the emitter of the transistor Q5.

[0022] Preferably, the touch screen module includes a touch screen LCD, the model of which is TK0096F611, and the DC pin, MOSI pin, CS pin, RST pin, SCK pin, SDA pin, SCL pin and RESET pin of the touch screen LCD are respectively connected to different I / O ports of the central control module.

[0023] The LEDA, VDDIO, and VDD pins of the touchscreen LCD are all connected to the battery module;

[0024] The LEDK pin of the touchscreen LCD is connected to the emitter of transistor Q1 via potentiometer R51. The base of transistor Q1 is connected to the battery module via resistor R50, and the collector is connected to ground.

[0025] Capacitors C51 and C5 are filter capacitors for the LEDA pin of the touchscreen LCD. The RESET pin of the touchscreen LCD is connected to the ground line through capacitor C53. The RESET pin of the touchscreen LCD is also connected to the battery module through resistor R52. The SCL pin and SDA pin of the touchscreen LCD are connected to the battery module through resistors R53 and R54, respectively.

[0026] Preferably, the battery module includes a USB Micro-USB interface, a battery management chip IC1, a voltage regulator IC2, and a lithium battery pack BAT. Pin 1 of the USB Micro-USB interface is connected to the IN pin of the battery management chip IC1, and the VCC pin of the battery management chip IC1 is connected to pin 1 of the USB Micro-USB interface through a resistor R11. Capacitor C11 is the filter capacitor for pin 1 of the USB Micro-USB interface.

[0027] The START pin of the battery management chip IC1 is connected to the positive terminal of diode D7 through resistor R12, and the negative terminal of diode D7 is connected to ground. The VSS, CE and SP pins of the battery management chip IC1 are all connected to ground.

[0028] The OUT pin of the battery management chip IC1 is connected to the positive terminal of the battery pack BAT and the VIN pin of the voltage regulator IC2, respectively. Capacitor C12 is the filter capacitor for the OUT pin of the battery management chip IC1.

[0029] The EN pin of the voltage regulator IC2 is connected to the OUT pin of the battery management chip IC1, the GND pin is connected to the ground wire, and the SW pin outputs power VDD through the inductor L12. Power VDD supplies power to the infrared sensor, the acquisition module, the central control module, the storage module, the vibration motor circuit and the touch screen module.

[0030] The FB pin of voltage regulator IC2 is connected to the VDD power supply through resistor R13. One end of resistor R14 is connected to the FB pin of voltage regulator IC2 and the other end is connected to the ground. Capacitor C14 is connected in parallel with resistor R13. One end of capacitor C15 is connected to the VDD power supply and the other end is connected to the ground.

[0031] The battery management chip IC1 is model BQ24202, and the voltage regulator IC2 is model TPS62586.

[0032] This invention relates to a portable blood oxygen monitoring device for hypoxia-resistant training. It solves the technical problems of difficulty in real-time blood oxygen data monitoring, unstable wireless transmission, and inconvenient data storage during hypoxia-resistant training. This invention integrates acquisition, processing, storage, and display modules into one unit. It is small in size, lightweight, and has a built-in 0.96-inch touchscreen. It supports real-time display of blood oxygen value, pulse rate, and battery level, as well as Bluetooth status visibility. It can wirelessly communicate with a host computer via Bluetooth 5.0, supports local data caching, and low-power battery management. With a 3.6V micro lithium battery, the battery life can reach 10 hours. It also supports a vibration motor circuit alarm, which can trigger an alarm when the blood oxygen value is below a threshold. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the present invention.

[0034] Figure 2 This is a circuit diagram of the infrared sensor and acquisition module of this utility model;

[0035] Figure 3 This is a circuit diagram of the central control module and the vibration motor circuit of this utility model;

[0036] Figure 4 This is a circuit diagram of the touch screen module of this utility model;

[0037] Figure 5 This is the circuit diagram of the battery module of this utility model;

[0038] Figure 6 This is a schematic diagram illustrating the communication between the present invention and the host computer during use.

[0039] In the picture: 1. Ring; 2. Bluetooth to USB module; 3. Host computer. Detailed Implementation

[0040] Depend on Figures 1-6The portable blood oxygen monitoring device shown includes an infrared sensor, a data acquisition module, a central control module, a storage module, a touch screen module, a vibration motor circuit, and a battery module. The infrared sensor is connected to the data acquisition module, and the data acquisition module, storage module, and touch screen module are all connected to the central control module. The battery module supplies power to the infrared sensor, data acquisition module, central control module, storage module, vibration motor circuit, and touch screen module.

[0041] The infrared sensor includes an infrared receiver LED3, an infrared transmitter LED1, and an infrared transmitter LED2. The acquisition module includes an acquisition chip U1 and its peripheral circuits. The positive terminal of the infrared receiver LED3 is connected to the INN pin of the acquisition chip U1, and the negative terminal is connected to the INP pin of the acquisition chip U1. The capacitor C1 is connected in parallel with the infrared receiver LED3.

[0042] The positive terminal of the infrared emitter LED1 is connected to the TXN pin of the acquisition chip U1, and the negative terminal is connected to the TXP pin of the acquisition chip U1.

[0043] The positive terminal of the infrared emitter LED2 is connected to the TXP pin of the acquisition chip U1, and the negative terminal is connected to the TXN pin of the acquisition chip U1.

[0044] The RESET, ADC_RDY, SPISTE, SPISOMIO, SPISOMI, SCLK, PD_ALM, LED_ALM, DLAG_END, and AFE_PND pins of the acquisition chip U1 are respectively connected to different I / O ports of the central control module.

[0045] The acquisition chip U1 is model AEF4400.

[0046] In this embodiment, the acquisition chip U1 is responsible for driving the infrared emitters LED1 and LED2 to generate 660nm red light and 940nm infrared light. The infrared receiver LED3 receives the light projected through the wearer's finger and completes signal amplification, filtering and A / D conversion. Its working principle and process are as follows: LED1 / LED2 alternately emit light pulses, which are received by LED3 after penetrating the finger tissue. The change in light intensity reflects the blood oxygen saturation. After the received signal is processed by the transimpedance amplifier and filter inside the AFE4400, the digital signal is output to the main control chip U2.

[0047] The storage module is model AT24C02, and it is connected to the central control module via an I2C bus.

[0048] The central control module has a built-in Bluetooth module, which communicates wirelessly with the host computer through an antenna circuit.

[0049] The vibration motor circuit is connected to the central control module.

[0050] The central control module includes a main controller U2 and its peripheral circuits; the main controller U2 is an nRF52840.

[0051] In this embodiment, the main controller U2 receives ADC data from the AFE4400, caches the data in the storage module AT24C02 via the I2C interface, and drives the touch screen TK0096F611 to display the data.

[0052] The antenna circuit includes capacitor C43, capacitor C16, inductor L4, capacitor C42, inductor L70, and antenna RF. Antenna RF is connected to pin 1 of capacitor C42. Pin 2 of capacitor C42 is connected to pin 1 of inductor L4. Pin 2 of inductor L4 is connected to the ANT pin of main controller U2. Pins 1 and 2 of inductor L4 are connected to ground through capacitor C16 and capacitor C43, respectively. The node where capacitor C43 is connected to ground is also connected to the VSS_PA pin of main controller U1. Pin 1 of capacitor C42 is also connected to ground through inductor L16.

[0053] In this embodiment, the Bluetooth module is built into the nRF52840. The antenna circuit ensures that its wireless communication signal can reach a communication distance of 25 meters without obstruction, and ensures anti-interference processing during data transmission.

[0054] The vibration motor circuit includes a vibration motor T1, a transistor Q5, a resistor R41, and a resistor R6. The positive terminal of the vibration motor's power supply is connected to the battery module, and the negative terminal is connected to the collector of the transistor Q5. The emitter of the transistor Q5 is connected to ground, and the base is connected to an I / O port of the main controller U2 through the resistor R41. One end of the resistor R6 is connected to the base of the transistor Q5, and the other end is connected to the emitter of the transistor Q5.

[0055] In this embodiment, the vibration motor is a micro motor, which is driven and controlled by transistor Q5.

[0056] The touch screen module includes a touch screen LCD, model number TK0096F611. The DC, MOSI, CS, RST, SCK, SDA, SCL and RESET pins of the touch screen LCD are respectively connected to different I / O ports of the central control module.

[0057] The LEDA, VDDIO, and VDD pins of the touchscreen LCD are all connected to the battery module;

[0058] The LEDK pin of the touchscreen LCD is connected to the emitter of transistor Q1 via potentiometer R51. The base of transistor Q1 is connected to the battery module via resistor R50, and the collector is connected to ground.

[0059] Capacitors C51 and C5 are filter capacitors for the LEDA pin of the touchscreen LCD. The RESET pin of the touchscreen LCD is connected to the ground line through capacitor C53. The RESET pin of the touchscreen LCD is also connected to the battery module through resistor R52. The SCL pin and SDA pin of the touchscreen LCD are connected to the battery module through resistors R53 and R54, respectively.

[0060] In this embodiment, the touchscreen LCD is a 0.96-inch touchscreen.

[0061] The battery module includes a USB Micro-USB interface, a battery management chip IC1, a voltage regulator IC2, and a lithium battery pack BAT. Pin 1 of the USB Micro-USB interface is connected to the IN pin of the battery management chip IC1. The VCC pin of the battery management chip IC1 is connected to pin 1 of the USB Micro-USB interface through a resistor R11. Capacitor C11 is the filter capacitor for pin 1 of the USB Micro-USB interface.

[0062] The START pin of the battery management chip IC1 is connected to the positive terminal of diode D7 through resistor R12, and the negative terminal of diode D7 is connected to ground. The VSS, CE and SP pins of the battery management chip IC1 are all connected to ground.

[0063] The OUT pin of the battery management chip IC1 is connected to the positive terminal of the battery pack BAT and the VIN pin of the voltage regulator IC2, respectively. Capacitor C12 is the filter capacitor for the OUT pin of the battery management chip IC1.

[0064] The EN pin of the voltage regulator IC2 is connected to the OUT pin of the battery management chip IC1, the GND pin is connected to the ground wire, and the SW pin outputs power VDD through the inductor L12. Power VDD supplies power to the infrared sensor, the acquisition module, the central control module, the storage module, the vibration motor circuit and the touch screen module.

[0065] The FB pin of voltage regulator IC2 is connected to the VDD power supply through resistor R13. One end of resistor R14 is connected to the FB pin of voltage regulator IC2 and the other end is connected to the ground. Capacitor C14 is connected in parallel with resistor R13. One end of capacitor C15 is connected to the VDD power supply and the other end is connected to the ground.

[0066] The battery management chip IC1 is model BQ24202, and the voltage regulator IC2 is model TPS62586.

[0067] Battery management chip IC1 manages the charging of the lithium battery pack and provides overcharge / over-discharge protection. Voltage regulator IC2 steps down the lithium battery pack voltage (3.6V) to 3.3V to power each module. When the USB is plugged in, the BQ24202 charges through the IN pin and outputs to the battery and TPS62586 through the OUT pin. The TPS62586 generates a stable 3.3V power supply (i.e., VDD power supply) through inductor L12 and feedback network (R13 / R14).

[0068] During use, since the infrared sensor, acquisition module, central control module, storage module, touch screen module, vibration motor circuit and battery module all use very small chips, they can all be housed in a ring-shaped shell, i.e., ring 1. The wearer only needs to wear the "ring" on the index finger. Ring 1 communicates with Bluetooth to USB module 2 via Bluetooth wireless network. Bluetooth to USB module 2 communicates with host computer 3 via USB interface. In this embodiment, Bluetooth to USB module 2 can be a wireless communication module of model LY50A13.

[0069] During operation, LED1 / LED2 emits red / infrared light, which penetrates the finger tissue and is received by LED3. AFE4400 outputs a digital pulse wave to nRF52840. nRF52840 is responsible for calculating SpO2. If the blood oxygen value is detected to be <90%, Q5 is triggered to conduct through GPIO (P0.05), and the vibration motor alarm is activated. This process can be further developed in software according to user needs. This embodiment only provides one usage process principle and aims to provide a hardware architecture.

[0070] Real-time data can be refreshed to the touch screen via the SPI interface and simultaneously uploaded to the host computer via the Bluetooth module.

[0071] The lithium battery outputs 3.3V through the TPS62586. Depending on user needs, it can be designed so that when the battery level is below 20%, the nRF52840 controls the touchscreen to display a low battery icon.

[0072] This invention relates to a portable blood oxygen monitoring device for hypoxia-resistant training. It solves the technical problems of difficulty in real-time blood oxygen data monitoring, unstable wireless transmission, and inconvenient data storage during hypoxia-resistant training. This invention integrates acquisition, processing, storage, and display modules into one unit. It is small in size, lightweight, and has a built-in 0.96-inch touchscreen. It supports real-time display of blood oxygen value, pulse rate, and battery level, as well as Bluetooth status visibility. It can wirelessly communicate with a host computer via Bluetooth 5.0, supports local data caching, and low-power battery management. With a 3.6V micro lithium battery, the battery life can reach 10 hours. It also supports a vibration motor circuit alarm, which can trigger an alarm when the blood oxygen value is below a threshold.

Claims

1. A portable blood oxygen monitoring device for use during hypoxia training, characterized in that: It includes an infrared sensor, a data acquisition module, a central control module, a storage module, a touch screen module, a vibration motor circuit, and a battery module. The infrared sensor is connected to the data acquisition module, and the data acquisition module, storage module, and touch screen module are all connected to the central control module. The battery module supplies power to the infrared sensor, data acquisition module, central control module, storage module, vibration motor circuit, and touch screen module. The central control module has a built-in Bluetooth module, which communicates wirelessly with the host computer over a distance of 25 meters without obstruction via an antenna circuit, and ensures anti-interference processing during data transmission. The vibration motor circuit is connected to the central control module; The infrared sensor, acquisition module, central control module, storage module, touch screen module, vibration motor circuit and battery module are all housed in a ring-shaped shell, i.e., a ring, which the wearer can wear on their index finger. If the blood oxygen level is detected to be less than 90%, the vibration motor circuit will trigger an alarm.

2. The portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 1, characterized in that: The infrared sensor includes an infrared receiver LED3, an infrared transmitter LED1, and an infrared transmitter LED2. The acquisition module includes an acquisition chip U1 and its peripheral circuits. The positive terminal of the infrared receiver LED3 is connected to the INN pin of the acquisition chip U1, and the negative terminal is connected to the INP pin of the acquisition chip U1. The capacitor C1 is connected in parallel with the infrared receiver LED3. The positive terminal of the infrared emitter LED1 is connected to the TXN pin of the acquisition chip U1, and the negative terminal is connected to the TXP pin of the acquisition chip U1. The positive terminal of the infrared emitter LED2 is connected to the TXP pin of the acquisition chip U1, and the negative terminal is connected to the TXN pin of the acquisition chip U1. The RESET, ADC_RDY, SPISTE, SPISOMIO, SPISOMI, SCLK, PD_ALM, LED_ALM, DLAG_END, and AFE_PND pins of the acquisition chip U1 are respectively connected to different I / O ports of the central control module.

3. A portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 2, characterized in that: The acquisition chip U1 is model AEF4400.

4. The portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 1, characterized in that: The storage module is model AT24C02, and it is connected to the central control module via an I2C bus.

5. A portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 1, characterized in that: The central control module includes a main controller U2 and its peripheral circuits; the main controller U2 is an nRF52840. The antenna circuit includes capacitor C43, capacitor C16, inductor L4, capacitor C42, inductor L70, and antenna RF. Antenna RF is connected to pin 1 of capacitor C42. Pin 2 of capacitor C42 is connected to pin 1 of inductor L4. Pin 2 of inductor L4 is connected to the ANT pin of main controller U2. Pins 1 and 2 of inductor L4 are connected to ground through capacitor C16 and capacitor C43, respectively. The node where capacitor C43 is connected to ground is also connected to the VSS_PA pin of main controller U1. Pin 1 of capacitor C42 is also connected to ground through inductor L16. The vibration motor circuit includes a vibration motor T1, a transistor Q5, a resistor R41, and a resistor R6. The positive terminal of the vibration motor's power supply is connected to the battery module, and the negative terminal is connected to the collector of the transistor Q5. The emitter of the transistor Q5 is connected to ground, and the base is connected to an I / O port of the main controller U2 through the resistor R41. One end of the resistor R6 is connected to the base of the transistor Q5, and the other end is connected to the emitter of the transistor Q5.

6. A portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 1, characterized in that: The touch screen module includes a touch screen LCD, model number TK0096F611. The DC, MOSI, CS, RST, SCK, SDA, SCL and RESET pins of the touch screen LCD are respectively connected to different I / O ports of the central control module. The LEDA, VDDIO, and VDD pins of the touchscreen LCD are all connected to the battery module; The LEDK pin of the touchscreen LCD is connected to the emitter of transistor Q1 via potentiometer R51. The base of transistor Q1 is connected to the battery module via resistor R50, and the collector is connected to ground. Capacitors C51 and C5 are filter capacitors for the LEDA pin of the touchscreen LCD. The RESET pin of the touchscreen LCD is connected to the ground line through capacitor C53. The RESET pin of the touchscreen LCD is also connected to the battery module through resistor R52. The SCL pin and SDA pin of the touchscreen LCD are connected to the battery module through resistors R53 and R54, respectively.

7. A portable blood oxygen monitoring device for hypoxia-resistant training as described in claim 1, characterized in that: The battery module includes a USB Micro-USB interface, a battery management chip IC1, a voltage regulator IC2, and a lithium battery pack BAT. Pin 1 of the USB Micro-USB interface is connected to the IN pin of the battery management chip IC1. The VCC pin of the battery management chip IC1 is connected to pin 1 of the USB Micro-USB interface through a resistor R11. Capacitor C11 is the filter capacitor for pin 1 of the USB Micro-USB interface. The START pin of the battery management chip IC1 is connected to the positive terminal of diode D7 through resistor R12, and the negative terminal of diode D7 is connected to ground. The VSS, CE and SP pins of the battery management chip IC1 are all connected to ground. The OUT pin of the battery management chip IC1 is connected to the positive terminal of the battery pack BAT and the VIN pin of the voltage regulator IC2, respectively. Capacitor C12 is the filter capacitor for the OUT pin of the battery management chip IC1. The EN pin of the voltage regulator IC2 is connected to the OUT pin of the battery management chip IC1, the GND pin is connected to the ground wire, and the SW pin outputs power VDD through the inductor L12. Power VDD supplies power to the infrared sensor, the acquisition module, the central control module, the storage module, the vibration motor circuit and the touch screen module. The FB pin of voltage regulator IC2 is connected to the VDD power supply through resistor R13. One end of resistor R14 is connected to the FB pin of voltage regulator IC2 and the other end is connected to the ground. Capacitor C14 is connected in parallel with resistor R13. One end of capacitor C15 is connected to the VDD power supply and the other end is connected to the ground. The battery management chip IC1 is model BQ24202, and the voltage regulator IC2 is model TPS62586.

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