A multi-functional monitoring circuit based on STM32

Abstract

This utility model relates to the field of electronic circuit technology. To address the problem of manual data entry required for patient information collection in existing technologies, it discloses a multifunctional monitoring circuit based on STM32, comprising an STM32 main control chip, a voice module, a heart rate and blood oxygenation detection module, a body temperature detection module, a wireless communication module, and a power supply module. The voice module, heart rate and blood oxygenation detection module, body temperature detection module, and wireless communication module are all connected to the STM32 main control chip. The STM32 main control chip receives signals from the heart rate and blood oxygenation detection module and the body temperature detection module, and transmits them to a host computer through the wireless communication module. The power supply module provides power. This utility model can be applied to ward monitoring.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, specifically to a multi-functional monitoring circuit based on STM32, which can be applied to ward monitoring. Background Technology

[0002] Currently, with the continuous advancement of information technology, the level of informatization in hospitals is constantly improving. However, the collection of clinical patient information in wards is still mainly done manually by medical staff, which is relatively inefficient. Moreover, the collected information needs to be manually entered into the system, resulting in a large workload and many inconveniences.

[0003] Therefore, there is a need to provide a multifunctional monitoring circuit to collect and transmit various signals in the ward, thereby improving the work efficiency of medical staff and reducing their workload. Utility Model Content

[0004] This invention overcomes the shortcomings of the existing technology and aims to solve the following technical problem: provide a multi-functional monitoring circuit based on STM32 to realize the automatic storage and uploading of basic ward data, thereby reducing the workload of data entry.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a multi-functional monitoring circuit based on STM32, including an STM32 main control chip, a voice module, a heart rate and blood oxygen detection module, a body temperature detection module, a wireless communication module, and a power supply module. The voice module, heart rate and blood oxygen detection module, body temperature detection module, and wireless communication module are all connected to the STM32 main control chip. The STM32 main control chip is used to receive signals from the heart rate and blood oxygen detection module and the body temperature detection module, and transmit them to the host computer through the wireless communication module. The power supply module is used to provide power.

[0006] The aforementioned multi-functional monitoring circuit based on STM32 further includes a button detection module. The button detection module includes three button circuits. In the first button circuit, pins 1 and 2 of button CZ6 are connected to the positive terminal of the power supply through resistor R21, and pins 3 and 4 of button CZ6 are grounded. Pins 1 and 2 of button CZ6 are connected to the input pins of the STM32 main control chip through resistor R22. One end of capacitor C12 is connected to the output terminal of resistor R22, and the other end is grounded. In the second button circuit, pins 1 and 2 of button CZ7 are connected to the positive power supply through resistor R25, and pins 3 and 4 of button CZ7 are grounded; pins 1 and 2 of button CZ7 are connected to the input pins of the STM32 main control chip through resistor R26, one end of capacitor C18 is connected to the output end of resistor R26, and the other end is grounded. In the third button circuit, pins 1 and 2 of button CZ5 are connected to the positive power supply through resistor R15, and pins 3 and 4 of button CZ5 are grounded; pins 1 and 2 of button CZ5 are connected to the input pins of the STM32 main control chip through resistor R12, one end of capacitor C6 is connected to the output terminal of resistor R12, and the other end is grounded.

[0007] The power module includes a first power conversion chip and a second power conversion chip. The first power conversion chip converts the external power supply into a 3.3V DC voltage to power the STM32 main control chip, voice module, body temperature detection module, wireless communication module, and key detection module. The second power conversion chip converts the 3.3V DC voltage output by the first power conversion chip into a 1.8V DC voltage to power the heart rate and blood oxygen detection module.

[0008] The first power conversion chip is model TPS79333, and the second power conversion chip is model NCP1117ST18T3. The power module also includes electrolytic capacitors C16, C17, C2, C20, C19, C30, C15, and C21. One end of electrolytic capacitors C16 and C17 is connected to pin IN of the first power conversion chip, and the other end is grounded. Pin IN of the first power conversion chip is connected to pin EN, pin OUT outputs a 3.3V DC voltage, and pin BYPASS is grounded through capacitor C30. After capacitors C2, C20, and C19 are connected in parallel, one end is connected to pin OUT of the first power conversion chip, and the other end is grounded. The IN pin of the second power conversion chip is connected to the OUT pin of the first power conversion chip, the GND pin is grounded, and the OUT pin outputs a 1.8V DC voltage. One end of capacitors C15 and C21 connected in parallel is connected to the OUT pin of the second power conversion chip, and the other end is grounded.

[0009] The voice module includes a voice chip, an audio power amplifier, capacitors C9, C10, C8, and C11, and resistors R2, R3, R9, R5, R8, and R4. The voice chip's BUSY and SCK pins are connected to the output pins IO2 and IO1 of the STM32 main control chip, respectively. One end of resistors R2 and R3 is connected to the positive terminal of the power supply, and the other end is connected to the voice chip's BUSY and SCK pins, respectively. The voice chip's VDD pin is grounded through capacitor C11, and the VO+ pin is connected to the audio power amplifier's IN- pin through a series capacitor C9 and resistor R5. The VO- pin is connected to the audio power amplifier's IN+ pin through a series capacitor C10 and resistor R8. The audio power amplifier's SD pin is connected to the output pin IO3 of the STM32 main control chip, the VDD pin is grounded through capacitor C8, and the VO+ and VO- pins are connected to the amplifier through interface terminal CZ9.

[0010] The aforementioned multi-functional monitoring circuit based on STM32 further includes a smoke sensor module and a display module. The smoke sensor module is connected to the STM32 main control chip and is used to collect smoke data and send it to the STM32 main control chip. The display module is connected to the STM32 main control chip and is used to display the data collected by the STM32 main control chip.

[0011] The smoke sensor module uses an MQ-2 sensor, the display module uses an SO12832 LCD display module, and the STM32 main control chip is an STM32F103C8T6.

[0012] The heart rate and blood oxygen detection module is model MAX30102, which is connected to the STM32 main control chip via an I2C interface; the body temperature detection module is model M1601, which is connected to the I / O port of the STM32 main control chip.

[0013] The wireless communication module is a LoRa communication module, which is connected to the UART interface of the STM32 main control chip.

[0014] The aforementioned multi-functional monitoring circuit based on STM32 also includes a buzzer module, which comprises a resistor R48, a capacitor C28, a transistor Q1, and a buzzer U6. One end of resistor R48 is connected to the output terminal of the STM32 main control chip, and the other end is connected to the base of transistor Q1. One end of resistor R48 is also grounded through capacitor C28. One end of resistor R47 is connected to the positive terminal of the power supply, and the other end is connected to the base of transistor Q1. The emitter of transistor Q1 is connected to the positive terminal of the power supply, and the collector is grounded through buzzer U6.

[0015] Compared with the prior art, the present invention has the following advantages: This invention provides a multi-functional monitoring circuit based on STM32, which can automatically collect and upload basic data such as heart rate, blood oxygen, and body temperature. Moreover, it is equipped with a display module and a voice prompt module, which can improve the convenience of the detection process. The buzzer module can issue alarm prompts, and the smoke sensor module can monitor the air in the ward in real time. Therefore, this invention improves the work efficiency of medical staff and reduces their labor intensity. Attached Figure Description

[0016] Figure 1A circuit structure block diagram of a multi-functional monitoring circuit based on STM32 provided for an embodiment of this utility model; Figure 2 This is a circuit diagram of the key detection module in an embodiment of this utility model; Figure 3 This is a circuit diagram of the power module in an embodiment of the present invention; Figure 4 This is a circuit diagram of the voice module in an embodiment of this utility model; Figure 5 This is a circuit diagram of the main control chip in an embodiment of this utility model; Figure 6 This is a circuit diagram of the heart rate and blood oxygen detection module in an embodiment of the present invention; Figure 7 This is a circuit diagram of the body temperature detection module in an embodiment of this utility model; Figure 8 This is a circuit diagram of the wireless communication module in an embodiment of this utility model; Figure 9 This is a circuit diagram of the buzzer module in an embodiment of the present utility model; Figure 10 This is a circuit diagram of the display module in an embodiment of the present invention; Figure 11 This is a circuit diagram of the smoke sensor in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] like Figure 1 As shown in the figure, this utility model embodiment provides a multi-functional monitoring circuit based on STM32, including an STM32 main control chip, a voice module, a heart rate and blood oxygen detection module, a body temperature detection module, a wireless communication module, and a power supply module. The voice module, heart rate and blood oxygen detection module, body temperature detection module, wireless communication module, and button detection module are all connected to the STM32 main control chip. The STM32 main control chip is used to receive signals from the heart rate and blood oxygen detection module and the body temperature detection module, and transmit them to the host computer through the wireless communication module. The power supply module is used to provide power.

[0019] Furthermore, such as Figure 1As shown, this embodiment also includes a key detection module connected to the input terminal of the STM32 main control chip. Figure 2 As shown, the button detection module includes three button circuits. In the first button circuit, pins 1 and 2 of button CZ6 are connected to the positive terminal of the power supply through resistor R21, and pins 3 and 4 of button CZ6 are grounded. Pins 1 and 2 of button CZ6 are connected to the input pins of the STM32 main control chip through resistor R22. One end of capacitor C12 is connected to the output terminal of resistor R22, and the other end is grounded. In the second button circuit, pins 1 and 2 of button CZ7 are connected to the positive power supply through resistor R25, and pins 3 and 4 of button CZ7 are grounded; pins 1 and 2 of button CZ7 are connected to the input pins of the STM32 main control chip through resistor R26, one end of capacitor C18 is connected to the output end of resistor R26, and the other end is grounded. In the third button circuit, pins 1 and 2 of button CZ5 are connected to the positive power supply through resistor R15, and pins 3 and 4 of button CZ5 are grounded; pins 1 and 2 of button CZ5 are connected to the input pins of the STM32 main control chip through resistor R12, one end of capacitor C6 is connected to the output terminal of resistor R12, and the other end is grounded.

[0020] like Figure 3 As shown in this embodiment, the power module includes a first power conversion chip and a second power conversion chip. The first power conversion chip is used to convert the external power supply into a 3.3V DC voltage to power the STM32 main control chip, voice module, body temperature detection module, wireless communication module, and key detection module. The second power conversion chip is used to convert the 3.3V DC voltage output by the first power conversion chip into a 1.8V DC voltage to power the heart rate and blood oxygen detection module.

[0021] Furthermore, in this embodiment, the first power conversion chip is model TPS79333, and the second power conversion chip is model NCP1117ST18T3; The power module also includes electrolytic capacitors C16, C17, C2, C20, C19, C30, C15, and C21. One end of electrolytic capacitors C16 and C17 is connected to pin IN of the first power conversion chip, and the other end is grounded. Pin IN of the first power conversion chip is connected to pin EN, pin OUT outputs 3.3V DC voltage, and pin BYPASS is grounded through capacitor C30. After capacitors C2, C20, and C19 are connected in parallel, one end is connected to pin OUT of the first power conversion chip, and the other end is grounded. Pin IN of the second power conversion chip is connected to pin OUT of the first power conversion chip, pin GND is grounded, pin OUT outputs 1.8V DC voltage, and after capacitors C15 and C21 are connected in parallel, one end is connected to pin OUT of the second power conversion chip, and the other end is grounded. The 3.3V DC voltage mainly supplies power to the STM32 main control chip, voice circuit, display module, wireless transmission module, etc., while the 1.8V DC voltage is used to supply power to the heart rate and blood oxygen detection module.

[0022] Furthermore, such as Figure 4 As shown, the voice module includes a voice chip, an audio power amplifier, capacitors C9, C10, C8, and C11, and resistors R2, R3, R9, R5, R8, and R4. The voice chip's BUSY and SCK pins are connected to the output pins IO2 and IO1 of the STM32 main control chip, respectively. One end of resistors R2 and R3 is connected to the positive power supply, and the other end is connected to the voice chip's BUSY and SCK pins, respectively. The voice chip's VDD pin is grounded through capacitor C11, and its VO+ pin is grounded through capacitor C9 connected in series. Resistor R5 is connected to the IN- pin of the audio power amplifier, and pin VO- is connected to the IN+ pin of the audio power amplifier through capacitor C10 and resistor R8 in series. Pins VO+ and VO- of the voice chip are also connected to interface terminal CZ2, through which an amplifier can be connected. Pin SD of the audio power amplifier is connected to the output pin IO3 of the STM32 main control chip, pin VDD is grounded through capacitor C8, and pins VO+ and VO- are connected to interface terminal CZ9. Connecting an amplifier through interface terminal CZ9 can achieve better sound quality.

[0023] Furthermore, such as Figure 1 As shown in the figure, a multi-functional monitoring circuit based on STM32 in this embodiment also includes a smoke sensor module and a display module. The smoke sensor module is connected to the STM32 main control chip and is used to collect smoke data and send it to the STM32 main control chip. The display module is connected to the STM32 main control chip and is used to display the data collected by the STM32 main control chip.

[0024] Furthermore, in this embodiment, the STM32 main control chip is an STM32F103C8T6. For example... Figure 5 The diagram shown is the circuit schematic of the STM32 main control chip.

[0025] Furthermore, in this embodiment, the smoke sensor module uses an MQ-2 sensor, and the display module uses an SO12832 LCD display module. For example... Figure 10-11 The diagram shown is a circuit schematic of the display module and the smoke sensor module.

[0026] Furthermore, such as Figure 6 As shown, in this embodiment, the heart rate and blood oxygen detection module is model MAX30102, which is connected to the STM32 main control chip via an I2C interface; as Figure 7 As shown, the body temperature detection module is model M1601, and it is connected to the IO port of the STM32 main control chip.

[0027] Furthermore, in this embodiment, the wireless communication module is a LoRa communication module, and the wireless communication module is connected to the UART interface of the STM32 main control chip. Figure 8 As shown, in this embodiment, the wireless communication module is model E32-TTL-100.

[0028] Furthermore, such as Figure 1 As shown, this embodiment of a multi-functional monitoring circuit based on STM32 also includes a buzzer module connected to the output of the STM32 main control chip, such as... Figure 9 As shown, the buzzer module includes a resistor R48, a capacitor C28, a transistor Q1, and a buzzer U6. One end of the resistor R48 is connected to the output terminal of the STM32 main control chip, and the other end is connected to the base of the transistor Q1. One end of the resistor R48 is also grounded through the capacitor C28. One end of the resistor R47 is connected to the positive terminal of the power supply, and the other end is connected to the base of the transistor Q1. The emitter of the transistor Q1 is connected to the positive terminal of the power supply, and the collector is grounded through the buzzer U6.

[0029] The working principle of this invention is as follows: During use, the circuit can be activated via the button module, and detection control information can be input. After the heart rate and blood oxygenation detection modules and the body temperature detection module are set up, detection begins. The detected heart rate and blood oxygenation information and body temperature information are collected by the STM32 main control chip and sent to the host computer for storage via the wireless communication module. The display module can display the current detection information, and the voice module outputs voice prompts during the detection process. When the detection data exceeds the threshold, the buzzer module can issue an alarm signal. In addition, the smoke sensor module can collect real-time air quality information from the ward.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-functional monitoring circuit based on STM32, characterized in that, The system includes an STM32 main control chip, a voice module, a heart rate and blood oxygen detection module, a body temperature detection module, a button detection module, a smoke sensor module, a display module, a buzzer module, a wireless communication module, and a power supply module. The voice module, heart rate and blood oxygen detection module, body temperature detection module, and wireless communication module are all connected to the STM32 main control chip. The STM32 main control chip receives signals from the heart rate and blood oxygen detection module and the body temperature detection module, and transmits them to the host computer through the wireless communication module. The power supply module provides power. The key detection module is used to start the circuit and input detection control information; The smoke sensor module is connected to the STM32 main control chip and is used to collect smoke data and send it to the STM32 main control chip. The display module is connected to the STM32 main control chip and is used to display the data collected by the STM32 main control chip. The buzzer module is connected to the output of the STM32 main control chip and is used to issue an alarm signal.

2. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The button detection module includes three button circuits. In the first button circuit, pins 1 and 2 of button CZ6 are connected to the positive terminal of the power supply through resistor R21, and pins 3 and 4 of button CZ6 are grounded. Pins 1 and 2 of button CZ6 are connected to the input pins of the STM32 main control chip through resistor R22. One end of capacitor C12 is connected to the output terminal of resistor R22, and the other end is grounded. In the second button circuit, pins 1 and 2 of button CZ7 are connected to the positive power supply through resistor R25, and pins 3 and 4 of button CZ7 are grounded; pins 1 and 2 of button CZ7 are connected to the input pins of the STM32 main control chip through resistor R26, one end of capacitor C18 is connected to the output end of resistor R26, and the other end is grounded. In the third button circuit, pins 1 and 2 of button CZ5 are connected to the positive power supply through resistor R15, and pins 3 and 4 of button CZ5 are grounded; pins 1 and 2 of button CZ5 are connected to the input pins of the STM32 main control chip through resistor R12, one end of capacitor C6 is connected to the output terminal of resistor R12, and the other end is grounded.

3. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The power module includes a first power conversion chip and a second power conversion chip. The first power conversion chip converts the external power supply into a 3.3V DC voltage to power the STM32 main control chip, voice module, body temperature detection module, wireless communication module, and key detection module. The second power conversion chip converts the 3.3V DC voltage output by the first power conversion chip into a 1.8V DC voltage to power the heart rate and blood oxygen detection module.

4. The multi-functional monitoring circuit based on STM32 according to claim 3, characterized in that, The first power conversion chip is model TPS79333, and the second power conversion chip is model NCP1117ST18T3. The power module also includes electrolytic capacitors C16, C17, C2, C20, C19, C30, C15, and C21. One end of electrolytic capacitors C16 and C17 is connected to pin IN of the first power conversion chip, and the other end is grounded. Pin IN of the first power conversion chip is connected to pin EN, pin OUT outputs a 3.3V DC voltage, and pin BYPASS is grounded through capacitor C30. After capacitors C2, C20, and C19 are connected in parallel, one end is connected to pin OUT of the first power conversion chip, and the other end is grounded. The IN pin of the second power conversion chip is connected to the OUT pin of the first power conversion chip, the GND pin is grounded, and the OUT pin outputs a 1.8V DC voltage. One end of capacitors C15 and C21 connected in parallel is connected to the OUT pin of the second power conversion chip, and the other end is grounded.

5. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The voice module includes a voice chip, an audio power amplifier, capacitors C9, C10, C8, and C11, and resistors R2, R3, R9, R5, R8, and R4. The voice chip's BUSY and SCK pins are connected to the output pins IO2 and IO1 of the STM32 main control chip, respectively. One end of resistors R2 and R3 is connected to the positive terminal of the power supply, and the other end is connected to the voice chip's BUSY and SCK pins, respectively. The voice chip's VDD pin is grounded through capacitor C11, and the VO+ pin is connected to the audio power amplifier's IN- pin through a series capacitor C9 and resistor R5. The VO- pin is connected to the audio power amplifier's IN+ pin through a series capacitor C10 and resistor R8. The audio power amplifier's SD pin is connected to the output pin IO3 of the STM32 main control chip, the VDD pin is grounded through capacitor C8, and the VO+ and VO- pins are connected to the amplifier through interface terminal CZ9.

6. The multi-functional monitoring circuit based on STM32 according to claim 1, wherein the smoke The sensor module uses the MQ-2 sensor, the display module uses the SO12832 LCD display module, and the STM32 main control chip is model STM32F103C8T6.

7. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The heart rate and blood oxygen detection module is model MAX30102, which is connected to the STM32 main control chip via an I2C interface; the body temperature detection module is model M1601, which is connected to the I / O port of the STM32 main control chip.

8. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The wireless communication module is a LoRa communication module, which is connected to the UART interface of the STM32 main control chip.

9. The multi-functional monitoring circuit based on STM32 according to claim 1, characterized in that, The buzzer module includes a resistor R48, a capacitor C28, a transistor Q1, and a buzzer U6; One end of resistor R48 is connected to the output terminal of the STM32 main control chip, and the other end is connected to the base of transistor Q1. One end of resistor R48 is also grounded through capacitor C28. One end of resistor R47 is connected to the positive terminal of the power supply, and the other end is connected to the base of transistor Q1. The emitter of transistor Q1 is connected to the positive terminal of the power supply, and the collector is grounded through buzzer U6.

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