An intelligent infusion monitoring system

Abstract

This utility model relates to an intelligent infusion monitoring system, belonging to the field of infusion monitoring technology, and solves the problem that existing infusion devices cannot simultaneously meet the requirements of low cost and intelligent monitoring of infusion status. It includes: a speed control component and an infusion monitoring component; the speed control component includes a base plate, a stepper motor, a main shaft, a connecting rod, a mechanical clamp, and a rotating seat; one end of the stepper motor is fixedly connected to the main shaft, the other end of the main shaft is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to one end of the mechanical clamp, and the other end of the mechanical clamp is rotatably connected to the rotating seat; the stepper motor and the rotating seat are fixed on the base plate, clamping the infusion tube between the base plate and the mechanical clamp; the infusion monitoring component includes an electrically connected main controller, a motor drive unit, and a drip rate acquisition unit; the main controller is electrically connected to the motor drive unit and the drip rate acquisition unit respectively, and the motor drive unit is electrically connected to the stepper motor; the drip rate acquisition unit is located on the outside of the infusion tube drip chamber.

Description

Technical Field

[0001] This utility model relates to the field of infusion monitoring technology, and in particular to an intelligent infusion monitoring system. Background Technology

[0002] Intravenous infusion is a very common treatment method in clinical practice when patients are hospitalized. Currently, there are two methods of intravenous infusion in clinical practice. One is the traditional method of manually observing and controlling the infusion rate. Its disadvantages are that nurses need to constantly monitor the patient, and someone must accompany the patient, which consumes a lot of human resources and carries the risk of cross-infection. Sometimes, deviations occur, and it is impossible to accurately control the flow rate of the fluid. The infusion rate must be determined according to the patient's actual condition. If the medication is infused too quickly or too slowly, it will cause harm to the patient's body. The other method is automated infusion pump. Although this method solves the problem of human resource consumption, it is more expensive. Hospitals increase the cost of infusion during use, and this cost is ultimately passed on to the patient. Due to its high cost, this method of infusion is difficult to popularize in practice.

[0003] Therefore, there is an urgent need for a low-cost intelligent infusion monitoring system that can intelligently monitor the infusion status. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide an intelligent infusion monitoring system to solve the problem that existing infusion devices cannot simultaneously meet the requirements of low cost and intelligent monitoring of infusion status.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] This utility model provides an intelligent infusion monitoring system, including: a speed regulation component and an infusion monitoring component;

[0007] The speed control assembly includes a base plate, a stepper motor, a main shaft, a connecting rod, a mechanical clamp, and a rotating base. The stepper motor is fixedly connected to one end of the main shaft, the other end of the main shaft is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to one end of the mechanical clamp, and the other end of the mechanical clamp is rotatably connected to the rotating base. The stepper motor and the rotating base are fixed on the base plate, clamping the infusion tube between the base plate and the mechanical clamp.

[0008] The infusion monitoring component includes a main controller, a motor drive unit, and a drip rate acquisition unit that are electrically connected; the main controller is electrically connected to the motor drive unit and the drip rate acquisition unit respectively, and the motor drive unit is electrically connected to a stepper motor; the drip rate acquisition unit is located on the outside of the drip chamber of the infusion tube.

[0009] Based on the further improvement of the above scheme, the speed regulating component also includes two infusion tube limiting seats, which are respectively set on the base plate at both sides of the mechanical clamp.

[0010] Based on further improvements to the above scheme, the infusion monitoring component further includes a liquid level monitoring unit; the liquid level detection unit includes a liquid level sensor and a comparator circuit; the liquid level sensor is electrically connected to the comparator circuit, and the comparator circuit is electrically connected to the main controller.

[0011] Based on further improvements to the above scheme, the infusion monitoring component also includes a temperature control unit; the temperature control unit includes a temperature sensor, a relay circuit, and a heating element; the temperature sensor and the relay circuit are electrically connected to the main controller, and the relay circuit is electrically connected to the heating element.

[0012] Based on further improvements to the above scheme, the infusion monitoring component also includes a buzzer unit, a button unit, and a display unit electrically connected to the main controller.

[0013] Based on a further improvement of the above solution, the infusion monitoring component also includes a wireless transmission unit electrically connected to the main controller; the wireless transmission unit is wirelessly connected to the mobile terminal.

[0014] Based on the further improvement of the above solution, the intelligent infusion monitoring system also includes a fixing frame for placing the medicine container; the temperature sensor in the temperature control component and the liquid level sensor in the liquid level monitoring module are respectively set on the surface of the fixing frame that is attached to the bottom of the medicine container, and the heating element in the temperature control component is set on the surface of the fixing frame that is attached to the side of the medicine container.

[0015] Based on the further improvement of the above scheme, the main controller adopts an STM32F103C8T6 microcontroller as the CPU processor.

[0016] Based on a further improvement of the above scheme, the comparator circuit includes a comparator b_LM, resistors b_R1 and b_R2, and an adjustable resistor RT3.

[0017] The output terminal of comparator b_LM serves as the output terminal of the comparator circuit, with its ground terminal grounded and its power supply terminal connected to the power supply. The inverting terminal of comparator b_LM is connected to the power supply via resistor b_R1, and is also grounded via resistor b_R2. The non-inverting terminal of comparator b_LM serves as the input terminal of the comparator circuit and is connected to the output terminal of the liquid level sensor. The first fixed terminal of the adjustable resistor RT3 is connected to the non-inverting terminal of comparator b_LM, and its second fixed terminal and sliding terminal are grounded.

[0018] Based on a further improvement of the above scheme, the relay circuit includes a transistor d_Q, a light-emitting diode d_LED, a resistor d_R, a diode d_D, and a relay JDQ-5; the control terminal of the relay JDQ-5 is connected to the emitter of the transistor d_Q, the ground terminal is grounded, the power supply terminal is connected to the power supply VCC, the normally closed terminal is floating, and the normally open terminal is connected to the input terminal of the heating element; the collector of the transistor d_Q is connected to the power supply, and the base serves as the input terminal of the relay circuit; the anode of the diode d_D is grounded, and the cathode is connected to the emitter of the transistor d_Q; the anode of the light-emitting diode d_LED is connected to the emitter of the transistor d_Q, and the cathode is grounded through the resistor d_R.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] This invention provides an intelligent infusion monitoring system. Based on the infusion drip rate obtained from the drip rate acquisition unit, a stepper motor is driven to rotate forward and backward to control the main shaft, tightening or loosening the mechanical clamps. This achieves fully automatic control of the drip rate. Furthermore, non-contact droplet detection meets the strict aseptic requirements of clinical medicine, reducing the risk of cross-infection, improving infusion safety, and realizing intelligent infusion monitoring at a low cost. A non-contact level detection unit detects the water level, effectively preventing contamination of the medication. A temperature control unit collects the infusion temperature and controls a relay circuit to heat the medication using a heating element, preventing discomfort or adverse reactions in patients due to excessively low medication temperature.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] Figure 1 This is a schematic diagram of the speed regulating component provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a circuit connection diagram of the slotted optocoupler sensor provided in Embodiment 1 of this utility model;

[0025] Figure 3A circuit connection diagram of the stepper motor and motor drive unit provided in Embodiment 1 of this utility model;

[0026] Figure 4 A circuit connection diagram of the comparator circuit provided in Embodiment 1 of this utility model;

[0027] Figure 5 A circuit connection diagram of the relay circuit provided in Embodiment 1 of this utility model;

[0028] Figure 6 A circuit connection diagram of the buzzer unit provided in Embodiment 1 of this utility model;

[0029] Figure 7 A schematic diagram of a mobile phone interface provided in Embodiment 1 of this utility model;

[0030] Figure 8 A circuit connection diagram of the main controller provided in Embodiment 1 of this utility model;

[0031] Figure 9 A circuit connection diagram of the power module provided in Embodiment 1 of this utility model;

[0032] Figure 10 This is a schematic diagram of the structure of the fixing frame provided in Embodiment 1 of this utility model;

[0033] Figure label:

[0034] 1-Fixed frame; 2-Speed ​​control assembly; 3-Infusion tubing;

[0035] 21-Stepper motor; 22-Main spindle; 23-Connecting rod; 24-Rotating seat; 25-Mechanical clamp; 26-Infusion tube limit seat; 27-Base plate. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0037] A specific embodiment of this utility model discloses an intelligent infusion monitoring system, including: a speed regulation component 2 and an infusion monitoring component;

[0038] like Figure 1As shown, the speed control assembly 2 includes a base plate 27, a stepper motor 21, a main shaft 22, a connecting rod 23, a mechanical clamp 25, and a rotating seat 24. The stepper motor 21 is fixedly connected to one end of the main shaft 22, the other end of the main shaft 22 is hinged to one end of the connecting rod 23, the other end of the connecting rod 23 is hinged to one end of the mechanical clamp 25, and the other end of the mechanical clamp 25 is rotatably connected to the rotating seat 24. The stepper motor 21 and the rotating seat 24 are fixed on the base plate 27, clamping the infusion tube 3 between the base plate 27 and the mechanical clamp 25.

[0039] The infusion monitoring component includes a main controller, a motor drive unit, and a drip rate acquisition unit that are electrically connected; the main controller is electrically connected to the motor drive unit and the drip rate acquisition unit respectively, and the motor drive unit is electrically connected to the stepper motor 21; the drip rate acquisition unit is located on the outside of the drip chamber of the infusion tube 3.

[0040] It is understandable that the dripping state in the drip chamber of the infusion tube 3 is collected by the drip rate acquisition unit, the drip rate is obtained by the main controller, and the main controller controls the stepper motor 21 to rotate forward and backward by controlling the stepper motor drive unit, and tightens or loosens the mechanical clamp 25 by the main shaft 22, thereby realizing fully automatic control of the flow rate in the infusion tube 3.

[0041] In implementation, the speed regulating component 2 also includes two infusion tube limiting seats 26, which are respectively disposed on the base plates 27 at both sides of the mechanical clamp 25. It can be understood that by limiting the position of the infusion tube 3 by the infusion tube limiting seats 26, the position of the infusion tube 3 can be fixed and not moved, ensuring the accuracy of the drip rate control process.

[0042] Specifically, the mechanical clamp 25 is a rectangular plate with a set thickness; more specifically, the edges of the rectangular plate are rounded to prevent the mechanical clamp 25 from damaging the infusion tubing when clamping.

[0043] Specifically, the drip rate acquisition unit uses a slotted optocoupler sensor COM4. As can be understood, the slotted optocoupler sensor COM4 is located on the outside of the dripping container. When liquid is dripping, there is obstruction, resulting in a high-level output; when there is no liquid dripping, there is no obstruction, resulting in a low-level output. There is also an output status indicator light; a high-level output light is off, and a low-level output light is on. The high and low level signals are transmitted to the main controller, which calculates the drip rate by the time it takes for the water droplets to fall and takes the average value from multiple measurements.

[0044] More specifically, the slot width of the slot-type optocoupler sensor COM4 is 20mm.

[0045] More specifically, such as Figure 2As shown, the slotted optocoupler sensor COM4 includes a power indicator a_LED1, a status indicator a_LED2, an infrared LED a_D1, an NPN phototransistor a_P1, a comparator a_LM, capacitors a_C1 and a_C2, and resistors a_R1 to a_R7. The positive terminal of the infrared LED a_D1 is connected to the power supply VCC via resistor a_R4, and the negative terminal is grounded. The emitter of the NPN phototransistor a_P1 is grounded, and the collector is connected to the power supply VCC via resistor a_R5. The collector of the NPN phototransistor a_P1 is also connected to the non-inverting input of the comparator a_LM. One end of resistor a_R1 is grounded, and the other end is connected to the power supply VCC via resistor a_R3. The other end of resistor a_R1 is also connected to the comparator a_LM. The inverting input terminal of M is connected; the positive terminal of power indicator a_LED1 is connected to power supply VCC, and the negative terminal is grounded after passing through resistor a_R2; one end of capacitor a_C1 is grounded, and the other end is connected to power supply VCC; one end of capacitor a_C2 is grounded, and the other end is connected to the collector of NPN phototransistor a_P1; the power supply terminal of comparator a_LM is connected to power supply VCC, and the ground terminal is grounded; the output terminal of comparator a_LM serves as the output terminal D0 of slot-type optocoupler sensor COM4; one end of resistor a_R6 is connected to the output terminal of comparator a_LM, and the other end is connected to power supply VCC; one end of resistor a_R7 is connected to the output terminal of comparator a_LM, and the other end is connected to the negative terminal of status indicator a_LED2; the positive terminal of status indicator a_LED2 is connected to power supply VCC.

[0046] Furthermore, comparator a_LM uses an LM393 comparator, operating at 3.3V-5V, with a digital switch output (0 and 1), and a small PCB size of 3.2cm x 1.4cm. Understandably, the comparator output provides a clean signal, good waveform, and strong drive capability exceeding 15mA, meeting the system design accuracy requirements.

[0047] Understandably, when collecting drip rate data, the drip chamber can be placed between the infrared LED a_D1 and the NPN phototransistor a_P1. The photoelectric detection method can detect the droplets non-contactly, meeting the strict aseptic operation requirements in clinical medicine, which helps reduce the risk of cross-infection and improve the safety of infusion.

[0048] In implementation, the stepper motor 21 is a 28BYJ48 type four-phase eight-step motor, and the motor drive unit is a ULN2003; as Figure 3 As shown, the input terminals In1 to In4 of the motor drive unit ULN2003 receive four control signals IN1 to IN4 from the main controller, and the output terminals Out1 to Out4 are connected to the receiving terminals 1 to 4 of the 28BYJ48 four-phase eight-beat motor CON5, respectively.

[0049] Specifically, this embodiment uses a 28BYJ48 four-phase eight-step motor with a voltage of DC5V to DC12V, a step angle of 5.625 / 64, and a reduction ratio of 1:64. When the stepper driver of the motor drive unit receives a pulse signal, it drives the stepper motor to rotate a fixed angle in the set direction. The angular displacement is controlled by controlling the number of pulses, thereby achieving accurate positioning. It operates in a dual (two-phase winding energized) eight-step (A-AB-B-BC-C-CD-D-DA-A) energizing mode. Since the main controller interface signal is not large enough, it needs to be amplified by the drive circuit before being connected to the corresponding stepper motor interface. The drive circuit is constructed using a ULN2003, which contains eight NPN Darlington transistors. All device functions are controlled by collector output and clamping diode transient suppression. This ULN2003 is specifically designed to comply with the TTL standard. This circuit is an inverting output type, meaning that the output terminal can only conduct when the input voltage is low. The driving method is 4-1-2 phase drive.

[0050] In practice, the infusion monitoring component further includes a liquid level monitoring unit; the liquid level detection unit includes a liquid level sensor and a comparator circuit; the liquid level sensor is electrically connected to the comparator circuit, and the comparator circuit is electrically connected to the main controller.

[0051] Specifically, such as Figure 4 As shown, the comparator circuit includes a comparator b_LM, resistors b_R1 and b_R2, and an adjustable resistor RT3. The output terminal of comparator b_LM serves as the output terminal OUT of the comparator circuit, the ground terminal is grounded, and the power supply terminal is connected to the power supply VCC. The inverting terminal of comparator b_LM is connected to the power supply VCC via resistor b_R1, and the inverting terminal of comparator b_LM is also grounded via resistor b_R2. The non-inverting terminal of comparator b_LM serves as the input terminal of the comparator circuit and is connected to the output terminal of the liquid level sensor CON3. The first fixed terminal of the adjustable resistor RT3 is connected to the non-inverting terminal of comparator b_LM, and the second fixed terminal and the sliding terminal are grounded.

[0052] Specifically, the comparator b_LM uses the LM393 comparator.

[0053] It should be noted that the working principle of the liquid level sensor is that its contact surface is a pressure sensor, which detects the pressure value at this time. The more liquid in the medicine container, the higher the voltage. By comparing with the comparator circuit, a high level will be output when the liquid level is higher than the set liquid level threshold, and a low level will be output when the liquid level is lower than the set liquid level threshold. The main controller monitors the liquid in the medicine container through the high and low levels.

[0054] Understandably, using a non-contact water level detection method to detect the liquid level in the medicine container and whether there is liquid in the medicine bottle can effectively prevent the medicine from being contaminated.

[0055] In practice, the infusion monitoring component further includes a temperature control unit; the temperature control unit includes a temperature sensor, a relay circuit, and a heating element; the temperature sensor and the relay circuit are electrically connected to the main controller, and the relay circuit is electrically connected to the heating element.

[0056] Specifically, such as Figure 5 As shown, the relay circuit includes a transistor d_Q, a light-emitting diode d_LED, a resistor d_R, a diode d_D, and a relay JDQ-5. The control terminal 1 of the relay JDQ-5 is connected to the emitter of the transistor d_Q, the ground terminal 2 is grounded, the power supply terminal 3 is connected to the power supply VCC, the normally closed terminal 4 is floating, and the normally open terminal 5 is connected to the input terminal 2 of the heating element. The collector of the transistor d_Q is connected to the power supply VCC, and the base serves as the input terminal of the relay circuit. The anode of the diode d_D is grounded, and the cathode is connected to the emitter of the transistor d_Q. The anode of the light-emitting diode d_LED is connected to the emitter of the transistor d_Q, and the cathode is grounded via the resistor d_R.

[0057] Specifically, the temperature sensor used is the DS18B20. It's understood that the DS18B20 temperature sensor acquires highly accurate values, with a temperature range of 0-50°C ± 0.2°C, meeting the system design requirements. The DS18B20 uses a single-bus, two-wire serial communication protocol. The acquisition process begins with the main controller initiating a start signal via I / O pins to the DS18B20. The DS18B20 then sends a response to the microcontroller and outputs the acquired data in a 40-bit data frame format. The main controller then parses the detected data to derive the specific temperature value.

[0058] Understandably, the main controller determines whether the infusion temperature is lower than the set appropriate infusion temperature based on the temperature sensor readings of the medication. If so, the main controller controls the relay circuit to activate the heating element to heat the medication, which means turning on the normally open terminal 5 of the relay to prevent the patient from experiencing discomfort or adverse reactions due to the medication being too cold.

[0059] In implementation, the infusion monitoring component also includes a buzzer unit, a button unit, and a display unit electrically connected to the main controller. It is understood that the button unit sets the drug solution threshold, upper and lower temperature limits, and upper and lower drip rate limits of the drug solution container, which are then displayed on the display unit. The display unit also shows the real-time drip rate and temperature. An alarm is triggered by the buzzer unit when the drug solution in the container reaches the drug solution threshold, or when the temperature or drip rate exceeds its upper or lower limits.

[0060] Specifically, such as Figure 6As shown, the buzzer unit includes a buzzer (BELL), a transistor (c_Q), resistors (c_R1 and c_R2), and a light-emitting diode (c_LED). The negative terminal of the buzzer (BELL) is grounded, and its positive terminal is connected to the emitter of the transistor (c_Q). The positive terminal of the buzzer (BELL) is also connected to the positive terminal of the light-emitting diode (c_LED) via resistor (c_R2). The negative terminal of the light-emitting diode (c_LED) is grounded. The collector of the transistor (c_Q) is connected to the power supply VCC, and its base is connected to one end of resistor (c_R1). The other end of resistor (c_R1) serves as the input terminal (Alarm) of the buzzer unit.

[0061] Specifically, the button unit is a circuit composed of three microswitches KEY1, KEY2, and KEY3 connected in parallel. One end of the button is connected to the bidirectional I / O port of the main controller, and the other end is grounded. When the button switch is in the open state, the I / O pin is disconnected from ground, and the I / O pin is at a high level. When the button is pressed, the I / O pin is grounded, the high level is set to low, and a low-level signal is returned to the microcontroller; the detection principle of the button switch is based on the detection of high and low levels. Furthermore, due to the toggle time of the button switch, errors are inevitable. A debouncing function can be added when writing the button function to improve accuracy.

[0062] Specifically, the display unit uses an OLED liquid crystal display screen to show the detected drop rate, drop rate upper and lower limits, temperature, and temperature upper and lower limits. The communication method is I2C, requiring only two I / O ports connected to a 5V voltage. The SCL pin of the display screen is connected to the B6 pin of the microcontroller, transmitting serial clock data through the SCL pin; the SDA pin is connected to the B7 pin of the microcontroller, transmitting serial data through the SDA pin. The module contains 128×64 display data RAM, where each bit of data corresponds to the bright / dark state of a pixel on the OLED screen. It is understood that OLED liquid crystal displays have the characteristics of high brightness, high contrast, wide viewing angle, fast response speed, wide temperature range, and low power consumption.

[0063] In practice, the infusion monitoring component also includes a wireless transmission unit electrically connected to the main controller; the wireless transmission unit is wirelessly connected to the mobile terminal.

[0064] Specifically, the wireless transmission unit uses an HC-05 Bluetooth module to wirelessly transmit the current temperature and drip rate. This module allows the current data and parameters to be wirelessly sent to the user's mobile phone for display, and the user can control the temperature and drip rate via the mobile phone. Figure 7 As shown.

[0065] Understandably, the HC05 Bluetooth module is a master-slave integrated device with high performance. It can pair with Bluetooth-enabled devices such as PDAs, mobile phones, and computers. The module supports a very wide baud rate range, from 4800 to 1382400. Moreover, the module is compatible with 3.3V or 5V microcontroller systems, making it extremely convenient and flexible.

[0066] In practice, the main controller uses an STM32F103C8T6 microcontroller as the CPU processor.

[0067] Specifically, such as Figure 8 The diagram shows the minimum system constructed using an STM32F103C8T6 microcontroller, including an STM32F103C8T6 microcontroller, resistors e_R2 to e_R4, capacitors e_C1 to e_C3, a button, an oscillator X1, and header connectors Header3X2. The STM32F103C8T6 microcontroller's reset NRST pin is grounded via the button, connected to a 3.3V power supply via resistor e_R3, and then grounded again via capacitor e_C3. The STM32F103C8T6 microcontroller's external crystal oscillator input OSC_IN is connected to one end of the oscillator X1, and also grounded via capacitor e_C1. The external crystal oscillator input terminal OSC_OUT of the C8T6 microcontroller is connected to the other end of the oscillator X1, and is also grounded after passing through capacitor e_C2; the BOOT1 terminal of the startup mode selection terminal is connected to pin 4 of the header connector Header3X2 after passing through resistor e_R2; pins 2 and 1 of the header connector Header3X2 are connected to a 3.3V power supply, pin 3 is connected to one end of resistor e_R4, pins 4 and 6 are connected to ground; the other end of resistor e_R4 is left floating.

[0068] It should be noted that, as Figure 8 As shown, the main controller uses an STM32C8T6 miniature core board as its core controller. It is primarily used to transmit data from the liquid level monitoring unit, drip rate acquisition unit, speed control component 2, and temperature control unit, as well as to control motor drive, heating, and alarm functions. This small system board with this chip is chosen as the control core because it offers abundant peripheral resources and interfaces compared to other chips, boasts the strongest performance among 32-bit MCUs, possesses outstanding control and communication capabilities, and features high performance and low power consumption, making it ideal for low-voltage / low-power applications and meeting the requirements of this design.

[0069] In this embodiment, the main controller uses the STM32C8T6 small core board, which integrates multiple interfaces. Addressing the system's requirement for low-speed measurements, the STM32103, based on the ARM Cortex-M3 core, boasts a clock frequency of 72MHz, making it the highest-performing product in its class. It features 32K to 128K of built-in flash memory, executing code from the flash. With a power consumption of 36mA, the STM32 is the lowest power-consuming 32-bit product on the market, equivalent to 0.5mA / MHz. Its powerful performance is sufficient to meet the design requirements. The STM32C8T6 series uses an RTC for its oscillator, employing a low-load approach instead of the traditional, less expensive cylindrical crystal oscillator. A 32.768kHz crystal oscillator is available for the built-in RTC, avoiding the need for a dedicated clock chip for timer processing. The STM32C8T6 small core board has 48 pins, including three general-purpose timers and one advanced timer, as well as two 2-bit / 16-channel ADCs. The numerous pins and timers meet the design requirements of a multi-module system.

[0070] Specifically, such as Figure 9 As shown, the microcontroller uses a 5V DC power supply module, which includes a 3-pin power socket and a 6-pin power switch. The power socket is used to connect to an external power plug, and the power switch is used to control the on / off state of the entire microcontroller circuit. Pin 2 of the power socket is grounded, and pin 1 is connected to pin 3 of the power switch. Pins 1 and 3 of the power switch, and pins 4 and 6, serve the same function: positive output of the power supply. Pins 2 and 5 of the power switch are used as ground pins for the microcontroller. A relative selection is used: if pins 1 and 3 are selected as outputs, then pin 5 must be selected as the ground pin; if pins 4 and 6 are selected as output ports, then pin 2 is used as the ground pin.

[0071] In practice, the intelligent infusion monitoring system also includes a mounting frame 1 for placing the medicine container; the temperature sensor in the temperature control component and the liquid level sensor in the liquid level monitoring module are respectively mounted on the surface of the mounting frame 1 that is attached to the bottom of the medicine container; and the heating element in the temperature control component is mounted on the surface of the mounting frame 1 that is attached to the side of the medicine container.

[0072] Specifically, the speed control plate is set at the bottom of the fixed frame 1, and the infusion tube 3 is limited by the infusion tube limit seat 26, with the infusion tube 3 pointing vertically downward.

[0073] For example, the fixing frame 1 is a hollow cylindrical fixing frame, such as... Figure 10As shown, the bottom surface is provided with a through hole, and the side of the through hole is inclined so that it can fit with the medicine outlet at the bottom of the medicine container; the temperature sensor and the liquid level sensor are set on the inclined surface so that they can fit tightly with the medicine outlet at the bottom of the medicine container; the heating element is set on the inner side of the support side of the fixed frame so that it can fit with the side of the medicine container; the base plate 27 of the speed regulating plate is set on one side of the through hole on the bottom surface of the fixed frame, and the infusion tube 3 can be limited downward on the base plate 27 of the speed regulating plate.

[0074] Understandably, when in use, the medicine container is placed inside the fixed frame 1, the output head at the bottom of the medicine container is connected to the infusion tube 3 and the infusion tube 3 is connected to the medicine bottle, the infusion tube 3 is placed in the infusion tube limiting seat 26, at this time the bottom of the medicine container is in contact with the temperature sensor and the liquid level sensor, and the side of the medicine container is in contact with the heating plate.

[0075] Preferably, the intelligent infusion monitoring system further includes a rotatable cylindrical structure and a rotation drive motor; the rotation drive motor is electrically connected to the main controller, the main shaft 22 of the rotation drive motor is connected to the rotatable shaft of the rotatable cylindrical structure, and the outer surface of the cylindrical structure is provided with a spiral groove for placing the infusion tube.

[0076] Furthermore, the rotatable cylindrical structure is vertically positioned at the bottom of the fixed frame 1.

[0077] It is understandable that the length of the infusion tubing can be controlled by the main controller to rotate the rotatable cylindrical structure. Control commands can be input via button units and mobile terminals, and the length control can be achieved by the main controller.

[0078] Compared with existing technologies, this embodiment provides an intelligent infusion monitoring system. Based on the infusion drip rate obtained from the drip rate acquisition unit, the main shaft 22 is controlled by driving a stepper motor to tighten or loosen the mechanical clamps, achieving fully automatic control of the drip rate. Furthermore, non-contact droplet detection meets the strict aseptic requirements of clinical medicine, reducing the risk of cross-infection, improving infusion safety, and achieving intelligent infusion monitoring at a lower cost. The system also uses a non-contact level detection unit to detect the water level, effectively preventing contamination of the medication. Finally, the system uses a temperature control unit to collect the infusion temperature, which in turn controls a relay circuit to heat the medication using a heating element, preventing discomfort or adverse reactions in patients due to excessively low medication temperature.

[0079] Those skilled in the art will understand that the program / software involved in the main controller in the above embodiments is a common method in the prior art, and this utility model does not involve any software improvements. This utility model only requires connecting the various devices with corresponding functions through the connection relationship given in the embodiments of this utility model, which does not involve any program or software improvements. As for the connection methods between the various hardware devices with corresponding functions, they can all be implemented by those skilled in the art using existing technology, and will not be described in detail here.

[0080] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intelligent infusion monitoring system, characterized in that, include: Speed ​​control component (2) and infusion monitoring component; The speed control assembly (2) includes a base plate (27), a stepper motor (21), a main shaft (22), a connecting rod (23), a mechanical clamp (25), and a rotating seat (24); the stepper motor (21) is fixedly connected to one end of the main shaft (22), the other end of the main shaft (22) is hinged to one end of the connecting rod (23), the other end of the connecting rod (23) is hinged to one end of the mechanical clamp (25), and the other end of the mechanical clamp (25) is rotatably connected to the rotating seat (24); the stepper motor (21) and the rotating seat (24) are fixed on the base plate (27) to clamp the infusion tube (3) between the base plate (27) and the mechanical clamp (25); The infusion monitoring component includes a main controller, a motor drive unit, and a drip rate acquisition unit that are electrically connected; the main controller is electrically connected to the motor drive unit and the drip rate acquisition unit respectively, and the motor drive unit is electrically connected to the stepper motor (21); the drip rate acquisition unit is located outside the drip chamber of the infusion tube (3).

2. The intelligent infusion monitoring system according to claim 1, characterized in that, The speed control assembly (2) also includes two infusion tube limit seats (26), which are respectively set on the base plate (27) at both sides of the mechanical clamp (25).

3. The intelligent infusion monitoring system according to claim 1, characterized in that, The infusion monitoring component further includes a liquid level monitoring unit; the liquid level monitoring unit includes a liquid level sensor and a comparator circuit; the liquid level sensor is electrically connected to the comparator circuit, and the comparator circuit is electrically connected to the main controller.

4. The intelligent infusion monitoring system according to claim 3, characterized in that, The infusion monitoring component also includes a temperature control unit; the temperature control unit includes a temperature sensor, a relay circuit, and a heating element; the temperature sensor and the relay circuit are electrically connected to the main controller, and the relay circuit is electrically connected to the heating element.

5. The intelligent infusion monitoring system according to claim 1, characterized in that, The infusion monitoring component also includes a buzzer unit, a button unit, and a display unit that are electrically connected to the main controller.

6. The intelligent infusion monitoring system according to claim 4, characterized in that, The infusion monitoring component also includes a wireless transmission unit electrically connected to the main controller; the wireless transmission unit is wirelessly connected to the mobile terminal.

7. The intelligent infusion monitoring system according to claim 4, characterized in that, The intelligent infusion monitoring system also includes a mounting bracket (1), which is used to place the liquid container; the temperature sensor in the temperature control unit and the liquid level sensor in the liquid level monitoring unit are respectively set on the surface of the mounting bracket (1) that is attached to the bottom of the liquid container, and the heating element in the temperature control unit is set on the surface of the mounting bracket (1) that is attached to the side of the liquid container.

8. The intelligent infusion monitoring system according to claim 1, characterized in that, The main controller uses an STM32F103C8T6 microcontroller as its CPU processor.

9. The intelligent infusion monitoring system according to claim 3, characterized in that, The comparator circuit includes a comparator b_LM, resistors b_R1 and b_R2, and an adjustable resistor RT3; The output terminal of comparator b_LM serves as the output terminal of the comparator circuit, with its ground terminal grounded and its power supply terminal connected to the power supply. The inverting terminal of comparator b_LM is connected to the power supply via resistor b_R1, and is also grounded via resistor b_R2. The non-inverting terminal of comparator b_LM serves as the input terminal of the comparator circuit and is connected to the output terminal of the liquid level sensor. The first fixed terminal of the adjustable resistor RT3 is connected to the non-inverting terminal of comparator b_LM, and its second fixed terminal and sliding terminal are grounded.

10. The intelligent infusion monitoring system according to claim 4, characterized in that, The relay circuit includes a transistor d_Q, a light-emitting diode d_LED, a resistor d_R, a diode d_D, and a relay JDQ-5. The control terminal of the relay JDQ-5 is connected to the emitter of the transistor d_Q, its ground terminal is grounded, its power supply terminal is connected to the power supply VCC, its normally closed terminal is floating, and its normally open terminal is connected to the input terminal of the heating element. The collector of the transistor d_Q is connected to the power supply, and its base serves as the input terminal of the relay circuit. The anode of the diode d_D is grounded, and its cathode is connected to the emitter of the transistor d_Q. The anode of the light-emitting diode d_LED is connected to the emitter of the transistor d_Q, and its cathode is grounded through the resistor d_R.

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