A multi-channel coordinated switching intelligent infusion control system and its control method

Abstract

This invention discloses a multi-channel coordinated switching intelligent infusion control system and its control method, relating to the field of infusion set technology. The invention includes a detachable outer shell, an infusion tubing system, an opening and closing mechanism, a drip rate monitoring component, a drip rate control mechanism, a controller, and a remote terminal. It allows for remote setting of the number of branch tubing pathways, the opening and closing sequence, and the drip rate of the main tubing, enabling real-time monitoring and precise adjustment of the drip rate. Branch tubing can be automatically switched, and the infusion tubing is detachable and replaceable. The control method achieves infusion control through five steps: restoring the initial state, installing the tubing, remote setting, monitoring and control, and drip termination. This invention is reusable, improving the automation and intelligence level of infusion.

Description

Technical Field

[0001] This invention belongs to the field of infusion device technology, and in particular relates to an intelligent infusion control system and control method with multi-channel coordinated switching. Background Technology

[0002] Intravenous infusion is one of the most common treatment methods in the medical field. It usually involves the infusion of various medications in sequence according to the specific needs of the patient. Currently, the common practice is to require manual intervention, with the patient monitoring the completion of the infusion and informing the nurse when to change the infusion. The speed of the infusion can affect the patient's comfort and may need to be adjusted frequently. This process requires a high degree of participation from both the patient and the nurse, which wastes a lot of time and energy.

[0003] To address the above issues, existing technologies have proposed various infusion solutions capable of multi-channel switching: (1) For example, CN109106996A discloses an automatic switching infusion channel sequential continuous infusion device. This solution uses a float valve in the middle controller to achieve automatic switching of multiple infusion channels. However, this solution still requires manual opening and closing of the corresponding branch pipes in sequence, and does not achieve fully automated multi-channel switching; (2) For example, CN117959522A discloses an automatic switching infusion device and its control method. It achieves flow rate and intravenous infusion control by cooperating with the flow rate adjustment part at the bottom of the Y-shaped tube. This solution is limited to switching only two branch infusion lines and is not suitable for switching more than two branch lines; (3) For example, CN208958954U discloses an intravenous infusion device, which requires manual opening of the corresponding locking device of the infusion bottle and does not achieve automatic switching; In addition, existing technologies have also proposed solutions for monitoring the speed of infusion drips: (1) For example, CN The active pressure intelligent infusion set, infusion control system and control method disclosed in 109464722A rely on infrared detectors and Hall sensors to monitor the drug solution and feed it back to the active pressure module to adjust the infusion drip rate. This scheme is suitable for active pressure delivery by a micro air pump, not for hanging intravenous drip infusion sets. The two have completely different technical scenarios and do not have the function of switching branch lines; (2) As disclosed in CN119673416A, an infusion flow rate control optimization method based on improved PID monitors the trend of infusion flow rate changes during infusion, inputs the infusion flow rate error to the PID controller, and converts it to control the speed of the infusion pump. To achieve precise control of infusion flow rate, but this solution is specifically for infusion pumps, not for hanging intravenous drip infusion, and the technical scenarios are completely different; (3) For example, CN211434457U discloses an infusion set that can automatically adjust the flow rate. It calculates the time difference between two drops of liquid through a time relay, and then obtains the flow rate of the two drops. It also controls the micro telescopic rod through a micro air pump to squeeze the pipeline and thus achieve drip rate control. However, the flow rate control mechanism and the infusion tube under this solution are integrated and cannot be disassembled, so they cannot be reused. The infusion tube is strictly required to be used only once, so the cost of use under this method is very high, which is not convenient for large-scale market application and promotion.

[0004] Therefore, to address the above issues, this solution proposes an intelligent infusion control system and its control method with multi-channel coordinated switching. This intelligent infusion control system, which enables multi-channel coordinated switching, controllable and adjustable drip rate, reusability, and ease of use, is of great significance. Summary of the Invention

[0005] This invention provides an intelligent infusion control system and method with multi-channel coordinated switching, solving the problems of traditional multi-drug infusion requiring manual monitoring and tubing replacement, which involves high involvement of medical staff and patients, and is time-consuming and labor-intensive; existing multi-channel infusion solutions cannot achieve fully automated switching, or only support switching of two branch lines, resulting in poor adaptability; existing drip rate monitoring and adjustment solutions have limited applicability, are not specifically designed for hanging intravenous drips, and some flow rate control mechanisms are integrated with the infusion tubing, making them non-reusable and costly; and the lack of dynamic monitoring and precise adjustment mechanisms for infusion drip rates affects infusion comfort and therapeutic efficacy.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention discloses a multi-channel collaborative switching intelligent infusion control system, comprising a detachable housing, an infusion tubing system with several branch lines and a main line installed within the detachable housing, an opening and closing mechanism for controlling the flow rate of droplets in each branch line, a droplet rate monitoring component for monitoring the droplet rate in each branch line and the main line, a droplet rate control mechanism for adjusting the output droplet rate of the main line, a controller, a wireless communication module, a power supply module, and a remote terminal. A manual speed adjustment dial is also provided at the front of the droplet rate control mechanism. The controller is a single-chip microcomputer controller, the wireless communication module uses Bluetooth, Wi-Fi, 3G, 4G, or 5G communication protocols, and the power supply module is a 12V / 2000mAh rechargeable lithium battery equipped with a USB-C charging interface. Of course, if this intelligent infusion control system is intended for single-use, the use of ordinary batteries or electronic power supply modules is also within the scope of this invention. The remote terminal is a handheld device, which can be a mobile phone, tablet, laptop, or desktop computer with a control system.

[0008] Each of the aforementioned opening and closing mechanisms controls the opening and closing of one or two branch pipelines, and at least one branch pipeline is opened by the controller command during use;

[0009] The drip rate monitoring component acquires the drip rate interval time difference of droplets in the branch pipe and the drip rate interval time difference of droplets flowing into the main pipe of the dripper when the pipe is open. After the controller calculates the drip rate data of the branch pipe and the main pipe when the pipe is open according to the formula drip rate = 60 / drip rate interval time difference (seconds), the data is converted into the drip rate data of the branch pipe and the main pipe when the pipe is open. The drip rate of the main pipe is the sum of the drip rates of each open branch pipe. The controller verifies the drip rate data of the branch pipe and the main pipe in real time.

[0010] The drip rate control mechanism controls the drip rate output from the main pipeline based on the drip rate data from the main pipeline. After receiving the controller command, the output drip rate is controlled to ensure that the output drip rate is set on the remote terminal. The controller uses an incremental PID algorithm to achieve precise adjustment of the drip rate. The PID algorithm parameters are in the following ranges: proportional coefficient Kp = 0.5-2.0, integral coefficient Ki = 0.1-0.5, and derivative coefficient Kd = 0.05-0.2. The parameters can be adapted to the main pipeline diameter of φ2-φ4mm.

[0011] The controller controls the opening and closing actions and sequence of branch pipelines according to the opening and closing commands set in the remote terminal, and controls the output drip rate of the main pipeline according to the command set in the remote terminal. Data interaction and transmission are carried out through the wireless communication module at a baud rate of 9600bps. The data transmission format is "branch pipeline number + opening / closing command / drip rate data + check bit". The opening and closing status of the branch pipeline, the drip rate data of the branch pipeline, and the drip rate data of the main pipeline are displayed in real time on the remote terminal.

[0012] Furthermore, the opening and closing mechanism is set and arranged according to the number of branch pipes. The number of branch pipes N≥2; when the number of branch pipes N is even, the number of opening and closing mechanisms is at least 1 / 2N; when the number of branch pipes N is odd, the number of opening and closing mechanisms is at least 1 / 2(N+1).

[0013] Furthermore, at least one opening and closing mechanism is provided on one side of the branch pipeline to control the opening and closing of the branch pipeline.

[0014] Furthermore, the opening and closing mechanism includes a fixed base with a hole for the branch pipe to pass through and a back plate, a first micro motor disposed on the rear side of the fixed base, a deflecting extrusion wheel mounted on the output shaft end of the first micro motor, an extrusion slider slidably mounted in the cavity formed between the fixed base and the back plate, and a limiting block fixedly mounted in the cavity and cooperating with the extrusion slider; the first micro motor is a 12V DC geared motor with a rated torque ≥0.5N・m, a rated speed of 30r / min, and a transmission ratio of 1:1 with the deflecting extrusion wheel; the branch pipe passes through the space between the extrusion slider and the limiting block, and the branch pipe is extruded and released under the rotation of the deflecting extrusion wheel, thereby realizing the opening and closing control of the branch pipe.

[0015] Furthermore, the deflecting extrusion wheel has an arc-shaped notch on its circumference that matches and fits the arc-shaped protrusion on one side of the extrusion slider, and the arc of the arc-shaped notch is 90°; the extrusion slider has a U-shaped structure and is set in the inner groove of the extrusion slider, and the side of the limiting block has an arc-shaped convex surface that matches the arc-shaped concave surface on the inner side of the extrusion slider. The radius of curvature of the arc-shaped concave / convex surface is 1.1-1.2 times the outer diameter of the branch pipe, which is suitable for branch pipes with diameters of φ2-φ4mm. When the branch pipe is closed, the branch pipe is squeezed by the arc-shaped concave surface and the arc-shaped convex surface to close the liquid circuit.

[0016] Furthermore, in addition to the arc-shaped notch, the back of the deflecting extrusion wheel is provided with an external opening groove. The angle of the external opening groove is 120°, one side is open and the other side is closed. A limiting post matching the external opening groove is provided on the back plate. The fitting gap between the limiting post and the external opening groove is ≤0.1mm, thereby limiting the rotation of the deflecting extrusion wheel to the correct position.

[0017] Furthermore, the extrusion slider is provided with a reset structure, which allows the extrusion slider to naturally reset to fit the arc-shaped protrusion and the arc-shaped notch when the branch pipeline is open.

[0018] Furthermore, the reset structure employs a tension spring connected between one side of the extrusion slider and the side of the back plate opening, or a tension rubber strip connected between one side of the upper pipe pressure plate of the branch pipe and the surface of the extrusion slider; a section of pipe pressure plate matching the shape of the branch pipe and the main pipe is provided above the connection position of the branch pipe and the main pipe for limiting the position. The pipe pressure plate is fixedly installed in the detachable housing via a connecting post with bolt connection holes at the bottom, and the bolt connection holes are fixed by tightening external bolts; the pipe pressure plate includes a main pipe section and a branch pipe section, the connecting post is located at the bottom of the branch pipe section and has a large opening for the branch pipe and devices to pass through, and the inner curvature of the cross-section of the main pipe section and the branch pipe section is a semi-circle greater than or equal to the outer diameter of the pipe.

[0019] Furthermore, the drip rate monitoring component includes a first limiting seat for limiting the passage of each branch pipeline, a second limiting seat for limiting the main pipeline, and photoelectric sensors located on both sides of the second limiting seat and on both sides of each first limiting seat. The photoelectric sensors are 940nm±10nm infrared photoelectric sensors with an installation spacing of 5-8mm. When a droplet passes through the light path, it briefly blocks the light intensity, forming a pulse. After being processed by an amplification circuit with a magnification of 100 times, a comparison circuit with a comparison threshold of 2.5V, and a Schmitt trigger shaping circuit, the drip rate is counted and calculated by the controller. The drip rate monitoring component also has a bubble detection function. If a sudden change in the pulse signal interval is detected three times consecutively, it is determined that there is a bubble in the pipeline, and a signal is immediately sent to the controller.

[0020] Furthermore, the drip rate control mechanism is located at the front end of the dripper on the main pipeline. The drip rate control mechanism includes a second micro motor located on the side of the main pipeline, a cam structure located at the front end of the output shaft of the second micro motor, and a pressure adjustment slider located at the front of the cam structure and limited by a limiting groove. The second micro motor is a 12V DC geared motor with a rated torque ≥0.3N・m and a rated speed of 10r / min. The transmission ratio with the cam structure is 1:5. The cam structure adopts a sinusoidal curve profile and has a maximum lift of 5-8mm. The main pipeline passes through the perforation on the limiting groove, with one side in contact with the pressure adjustment slider and the other side blocked. Driven by the second micro motor, the cam structure gradually pushes the pressure adjustment slider forward, eventually closing the main pipeline completely or gradually retracting, eventually opening the main pipeline completely.

[0021] Furthermore, the manual speed adjustment dial structure and the drip rate control mechanism have a manual-priority cooperative control relationship. After manually adjusting the dial, the automatic drip rate control is paused. The remote terminal can issue a command to override the manual setting and restore the automatic control. The scale of the manual speed adjustment dial corresponds linearly to the drip rate. Each scale division corresponds to a drip rate adjustment of 2 drops / minute. The maximum stroke of the dial is when the main pipeline is fully open, and the minimum stroke is when the main pipeline is fully closed.

[0022] Furthermore, the indicator light on the detachable housing works in conjunction with the buzzer to provide system status indication and alarm functions. When the battery is low (remaining battery ≤20%), the indicator light flashes continuously and the buzzer sounds intermittently; when air bubbles or tubing blockage are detected, the indicator light flashes rapidly and the buzzer sounds continuously; when the infusion is completed, the indicator light stays on and the buzzer sounds for 10 seconds before stopping.

[0023] Furthermore, the controller incorporates a nonlinear compensation lookup table algorithm. The opening-flow mapping table pre-stored in the Flash memory is factory calibrated, covering openings of 0-100% and corresponding drip rates of 0-50 drops / minute. It employs feedforward-feedback composite control, using the table to obtain the theoretical opening based on the target drip rate, with the PID output only compensating for errors. The controller also incorporates bus arbitration logic, implemented in software using a 74HC148 priority encoder, to prioritize switching requests from multiple branch pipelines, with emergency medication branch pipeline switching requests having the highest priority.

[0024] A multi-channel coordinated switching intelligent infusion control method is provided for controlling the aforementioned multi-channel coordinated switching intelligent infusion control system, comprising the following steps:

[0025] S1. Restore initial state: Through remote terminal control, the main pipeline and each branch pipeline are all in the open state under the control of the liquid droplet speed control mechanism and the opening and closing mechanism, respectively. The controller completes the self-test of each component. If a component fault is detected, a pop-up window will be displayed on the remote terminal and a local alarm will be triggered.

[0026] S2. Install infusion tubing: Open the detachable housing and the mounting base, pull out the used infusion tubing, or directly install a new infusion tubing in the empty detachable housing, and reinstall the mounting base and detachable housing to ensure that the branch tubing is properly connected to the opening and closing mechanism and the main tubing is properly connected to the drip rate control mechanism.

[0027] S3. Remote terminal setting of drip sequence and drip rate: First, adjust the manual speed adjustment dial to the fully closed state (the main pipeline is fully squeezed and the drip rate is zero). Then, after the infusion preparation is completed, select the branch pipeline number and drag to sort it through the operation interface of the remote terminal, set the drip sequence command, and at the same time input the target drip rate command for the main pipeline. After setting, adjust the manual speed adjustment dial to the fully open state (the dial slides to the maximum stroke and the main pipeline is not squeezed). The command is executed immediately, and the system drips in the main pipeline according to the set drip rate.

[0028] S4. Real-time monitoring and precise control of drip rate: The drip rate monitoring component monitors the drip rate data in each branch pipeline and the main pipeline in real time to verify whether the corresponding branch pipeline is open or closed and to acquire the drip rate data of the main pipeline. The data is then collected and transmitted to the controller and transmitted to the remote terminal via the wireless communication module. The remote terminal adjusts the drip rate of the main pipeline in real time according to the drip rate situation through the drip rate control mechanism. During this process, if the drip rate in the open branch pipeline is zero and the duration is ≥1 second, the opening and closing mechanism automatically switches the subsequent branch pipeline to open within 2 seconds. During the switching process, the main pipeline is kept slightly open (drip rate ≤5 drops / minute) to prevent air from entering the pipeline. If the drip rate is detected to be continuously lower than 50% of the set value for more than 30 seconds, it is determined that the pipeline is blocked. The controller controls the second micro motor to finely adjust the pressure adjustment slider by 5mm. If there is still no improvement, the main pipeline is closed and an alarm is triggered simultaneously on the remote terminal and the local terminal. If air bubbles are detected, the main pipeline is immediately closed and an alarm is triggered until the fault is manually rectified and the system is reset.

[0029] S5. Drip Termination: If the last branch line and the main line are both open and the drip rate is zero for ≥3 seconds, a dynamic reminder with pop-up window and sound will be displayed on the remote terminal. The drip rate control mechanism will be controlled to completely close the main line, and the local indicator light will stay on and the buzzer will sound to indicate that the infusion is complete.

[0030] Repeat steps S1-S5 the next time it is used; the remote terminal can perform a manual system update when it is used for the first time and when it is used again to keep it in the initial state.

[0031] The present invention has the following advantages over the prior art:

[0032] (1) Automated and intelligent infusion: Supports automatic switching of N≥2 branch lines, and can remotely set the opening and closing sequence and drip rate of the lines. No manual real-time monitoring is required. The branch line switching response time is ≤2s, which greatly reduces the workload of medical staff and improves the patient's infusion experience.

[0033] (2) Precise and controllable drip rate: The drip rate of the branch and main pipeline is monitored in real time by a 940nm infrared photoelectric sensor. The drip rate of the main pipeline is adjusted by an incremental PID algorithm combined with a nonlinear compensation lookup table algorithm. The drip rate adjustment accuracy reaches ±2 drops / minute, realizing dynamic and precise control of the drip rate to adapt to different treatment needs.

[0034] (3) Reusable and cost-reducing: The infusion tubing and control system are detachable and separable. The tubing is for single use, while the control system is reusable, avoiding the high usage cost of integrated design. The opening and closing mechanism and drip rate control mechanism are compatible with conventional φ2-φ4mm infusion tubing, which is convenient for market promotion. Of course, the control system and tubing of this solution are also considered as single-use equipment and are within the scope of protection of this technical solution.

[0035] (4) Strong adaptability: The opening and closing mechanism can be flexibly arranged according to the number of branch lines, supporting the opening and closing control of even and odd number of branch lines. A single opening and closing mechanism can control 1-2 branch lines, which is suitable for various clinical scenarios of multi-drug infusion. It can also remotely set the number of branch lines, the opening and closing sequence and the drip rate of the main line, realize real-time monitoring and precise adjustment of drip rate, and the branch lines can be automatically switched. The infusion line can be disassembled and replaced.

[0036] (5) Dual control and safety reminder: Equipped with a manual speed adjustment dial structure, it supports manual / remote dual control with manual priority. It can realize dual alarms on the remote terminal and local terminal in the case of drip completion, low battery, air bubbles, blockage, etc. The main pipeline is automatically shut off when the drip is completed, which greatly improves the safety of infusion.

[0037] (6) High system stability: The power supply module is a rechargeable lithium battery with a low battery reminder function. The wireless communication adopts Bluetooth, Wi-Fi, 3G, 4G or 5G modules, and the data transmission is stable. The feedforward-feedback composite control of the controller greatly reduces the system response time. The clock frequency division circuit generates phase-staggered PWM signals for multiple motor drives, reducing peak current and improving the overall system stability.

[0038] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of an intelligent infusion control system with multi-channel coordinated switching according to an embodiment of the present invention;

[0041] Figure 2 for Figure 1 Mid-bottom diagram;

[0042] Figure 3 for Figure 1 A schematic diagram of the structure after removing the top cover;

[0043] Figure 4 for Figure 2 Schematic diagram of the structure after removing the bottom plate;

[0044] Figure 5 for Figure 4 A schematic diagram of the structure after removing the control board;

[0045] Figure 6 for Figure 3 A schematic diagram of the structure after removing the fixing base;

[0046] Figure 7 for Figure 6 A schematic diagram of the structure after removing the infusion tubing;

[0047] Figure 8 for Figure 5 A schematic diagram of the structure after removing the infusion tubing;

[0048] Figure 9 This is a schematic diagram of the pipe pressure plate structure;

[0049] Figure 10 This is a magnified view of the location of the opening and closing mechanism;

[0050] Figure 11 This is a schematic diagram of the deflecting extrusion wheel.

[0051] Figure 12 This is a partially enlarged view of a branch catheter in the open state according to one embodiment of the opening and closing mechanism;

[0052] Figure 13 for Figure 12 A magnified view of the middle branch catheter in the closed state within the opening and closing mechanism;

[0053] Figure 14This is a partially enlarged view of the branch catheter in the open state according to another embodiment of the opening and closing mechanism;

[0054] Figure 15 for Figure 14 A magnified view of the middle branch catheter in the closed state within the opening and closing mechanism;

[0055] Figure 16 This is a system framework diagram of an intelligent infusion control system with multi-channel coordinated switching according to the present invention;

[0056] The attached diagram lists the components represented by each number as follows:

[0057] 1-Removable housing, 101-Opening slot, 103-Switch button, 104-Indicator light, 105-Bolt connection hole, 106-Screw hole, 107-Base plate, 108-Second limit seat, 2-Main pipeline, 201-Branch pipeline, 3-First micro motor, 301-Deflecting extrusion wheel, 302-Support tube, 303-Outer opening slot, 4-Second micro motor, 401-Cam structure, 402-Pressure adjustment slider, 403-Angled slider 404-Manual speed adjustment dial structure, 405-Limiting slide groove, 5-Drip pot, 501-Support pipe, 502-Main board, 6-Pipe pressure plate, 601-Main pipe section, 602-Branch pipe section, 603-Connecting column, 604-Tension rubber strip, 7-First limiting seat, 701-Drip rate monitoring component, 8-Fixing seat, 801-Back plate, 802-Extrusion slider, 803-Limiting block, 804-Tension spring, 805-Limiting column. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] In the description of this invention, it should be understood that the terms "side", "rear side", "circumferential side", "one side", "inner side", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0060] Please see Figure 1-13 and Figure 16As shown, the present invention discloses a multi-channel collaborative switching intelligent infusion control system, comprising a detachable housing 1, an infusion tubing system with several branch lines 201 and a main line 2 installed within the detachable housing 1, an opening and closing mechanism for controlling the flow rate of droplets in each branch line 201, a droplet rate monitoring component 701 for monitoring the droplet rate in each branch line 201 and the main line 2, a droplet rate control mechanism for adjusting the output droplet rate in the main line 2, a microcontroller, a Bluetooth 5.0 wireless communication module, a 12V / 2000mAh rechargeable lithium battery power supply module 501, and a remote terminal via a mobile phone. A manual speed adjustment dial 404 is also provided at the front of the droplet rate control mechanism. The power supply module is equipped with a USB-C charging interface. When the battery is low (remaining battery ≤20%), an indicator light flashes and a remote terminal reminder is triggered. In Bluetooth mode, BLE mesh networking technology is used. Of course, using Wi-Fi, 3G, 4G, or 5G modules to achieve the same effect also falls within the scope of protection of this technical solution.

[0061] The detachable housing 1 includes an upper housing and a base plate 107. The surface of the upper housing is provided with an opening groove 101 protruding from a manual speed adjustment dial structure 404. The bottom of the opening groove 101 is equipped with an inclined slide structure 403 for the manual speed adjustment dial structure 404 to slide. The main pipeline 2 is squeezed by manually adjusting the dial, thereby realizing manual adjustment of opening and closing and flow rate. The scale of the manual speed adjustment dial is linearly corresponding to the drip rate, with each scale corresponding to a drip rate adjustment of 2 drops / minute. The upper housing is also provided with a switch button 103 and an indicator light 104. The switch button 103 and the indicator light 104 are connected to the controller on the main board 502 inside the detachable housing 1. The switch button 103 is used for system power on / off. The indicator light 104 works with a buzzer to display the system working status and to display and alarm the status when the drip rate in all branch pipelines 201 is zero (complete dripping), low battery, air bubbles, blockage, etc.

[0062] A transparent cover can be installed on the upper shell, allowing direct observation of the internal piping. The transparent cover can be made of acrylic glass or tempered glass.

[0063] In this embodiment, the detachable outer shell 1 is installed between the base plate 107 and the upper shell by screws. The screws are installed in the screw holes 106 on the base plate 107. Of course, detachable methods such as tenon and mortise snaps or concave and convex snaps are also used. As long as the same effect of easy disassembly and installation can be achieved, they are all within the protection scope of this solution.

[0064] like Figure 3As shown, the multi-channel infusion set used in this invention includes a main pipe 2 and several branch pipes 201 connected to the main pipe 2. The diameter of both the main pipe 2 and the branch pipes 201 is φ3mm. A drip chamber 5 is also provided on the main pipe 2. The drip chamber 5 is limited by a second limiting seat 108 provided on the base plate 107. Above the inlet of each branch pipe 201, there are air inlet devices, bottle stopper puncture devices, etc. (not shown in the figure, they are standard settings) that are common to conventional infusion sets. At the end of the main pipe 2, there are Luer connectors, intravenous infusion needles, and needle protection caps, etc. (not shown in the figure, they are standard settings).

[0065] A single opening and closing mechanism controls the opening and closing of two branch pipelines 201. At least one branch pipeline 201 is opened by the controller during use. In this embodiment, there are 4 branch pipelines 201, and 2 opening and closing mechanisms are set accordingly. The controller has built-in 74HC148 priority encoder software logic. For example, the 4th branch pipeline is an emergency medication pipeline, and the switching request has the highest priority.

[0066] The drip rate monitoring component 701 acquires the drip rate interval time difference of the droplets in the branch pipe 201 and the drip rate interval time difference of the droplets flowing into the main pipe 2 of the dripper 5 in the open state. After the controller calculates according to the formula drip rate = 60 / drip rate interval time difference (seconds), it is converted into the drip rate data of the branch pipe 201 and the main pipe 2 in the corresponding open state. The drip rate of the main pipe 2 is the sum of the drip rates of each open branch pipe 201. The controller performs real-time verification of the drip rate data of the branch pipe 201 and the main pipe 2.

[0067] The liquid drip rate control mechanism controls the drip rate output from the main pipe 2 based on the drip rate data from the main pipe 2. After the controller outputs the command, the drip rate is controlled so that the output drip rate is the drip rate set on the remote terminal. In this embodiment, the controller PID algorithm parameters are calibrated as follows: Kp=1.2, Ki=0.3, Kd=0.1. It has a built-in opening degree-flow rate mapping table, and the opening degree of 0-100% corresponds to a drip rate of 0-50 drops / minute.

[0068] In actual use, there will generally be some error between the drip rate data and the acquired drip rate data over a period of time. The controller will leave some thresholds. At the same time, there are many factors that affect the drip rate (such as frequent changes in the body, changes in the position of the needle, etc.). If a threshold space of 1-5 drops / minute is left, it is within the normal range. The drip rate control mechanism will not make further adjustments or controls within the allowed threshold space.

[0069] The controller controls the opening and closing actions and sequence of branch pipes 201 according to the opening and closing commands set in the remote terminal, and controls the output drip rate of main pipe 2 according to the command set in the remote terminal. Data interaction and transmission are performed through Bluetooth 5.0 module at a baud rate of 9600bps. The data transmission format is "branch pipe number + opening / closing command / drip rate data + check bit". The controller also displays the opening and closing status of branch pipes 201, the drip rate data of branch pipes 201, and the drip rate data of main pipe 2 in real time on the remote terminal.

[0070] The opening and closing mechanism is set and arranged according to the number of branch pipes 201. The number of branch pipes 201 N≥2; when the number of branch pipes 201 N is even, the number of opening and closing mechanisms is at least 1 / 2N; when the number of branch pipes 201 N is odd, the number of opening and closing mechanisms is at least 1 / 2(N+1).

[0071] For example, in this embodiment, if the number of branch pipes 201 is set to four, then at least two corresponding opening and closing mechanisms are set. Of course, more opening and closing mechanisms can also meet the requirement of the number of four branch pipes 201, that is, the extra opening and closing mechanisms do not need to be installed with branch pipes 201; when the number of branch pipes 201 is six, at least three opening and closing mechanisms are set, and so on.

[0072] When the number of branch pipes 201 is odd, if it is set to three, there are at least two corresponding opening and closing mechanisms; if it is set to five, there are at least three corresponding opening and closing mechanisms; and if it is set to seven, there are at least four corresponding opening and closing mechanisms.

[0073] Among them, at least one opening and closing mechanism is provided on one side of the branch pipe 201 to control the opening and closing of the branch pipe 201, and its arrangement is as follows: Figure 3 As shown, a single opening and closing mechanism can open and close the branch pipes 201 on both sides; in the case of an odd number of opening and closing mechanisms, when the opening and closing mechanism has a branch pipe 201 on only one side, it can only open and close the branch pipe 201 on that side.

[0074] The opening and closing mechanism includes a fixed base 8 with a hole for the branch pipe 201 to pass through and a back plate 801, a first micro motor 3 located on the rear side of the fixed base 8, a deflecting extrusion wheel 301 mounted on the output shaft end of the first micro motor 3, an extrusion slider 802 slidably mounted in the cavity formed between the fixed base 8 and the back plate, and a limiting block 803 fixedly mounted in the cavity and cooperating with the extrusion slider 802. The first micro motor 3 is a 12V DC geared motor with a rated torque of 0.6 N·m and a rated speed of 30 r / min. The transmission ratio with the deflecting extrusion wheel 301 is 1:1. The opening and closing of the branch pipe 201 is achieved by extruding it through forward and reverse rotation. The branch pipe 201 passes through the space between the extrusion slider 802 and the limiting block 803. The branch pipe 201 is extruded and released by the rotation of the deflecting extrusion wheel 301, thereby realizing the opening and closing control of the branch pipe 201.

[0075] like Figure 10-13 As shown, the deflecting extrusion roller 301 has an arc-shaped notch on its periphery that matches and fits the arc-shaped protrusion on one side of the extrusion slider 802. The arc of the notch is 90°. The extrusion slider 802 has a U-shaped structure and is set in the inner groove of the extrusion slider 802. The side of the limiting block 803 has an arc-shaped convex surface that matches the arc-shaped concave surface of the inner side of the extrusion slider 802. The radius of curvature of the arc-shaped concave / convex surface is 3.3mm, which is suitable for the φ3mm branch pipe 201. When the branch pipe 201 is closed, the branch pipe 201 is squeezed by the arc-shaped concave surface and the arc-shaped convex surface to close the liquid circuit. The arc-shaped notch occupies 1 / 4 of the circumference of the extrusion slider 802. Both the extrusion slider 802 and the limiting block 803 are made of acrylic plastic. The specific shape is as follows. Figure 10 As shown in the corresponding structure, the limiting block 803 and the fixing seat 8 are fixed to the back plate 801 by screws. The fixing seat 8 can be disassembled when the branch pipe 201 needs to be installed and removed. The channel through which the fixing seat 8 passes for the branch pipe 201 is open at the bottom, and the upper part of the back plate 801 through the path of the branch pipe 201 is open. This makes it very convenient to install the branch pipe 201 after the fixing seat 8 is removed.

[0076] Among them, such as Figure 10-11 As shown, the deflecting extrusion wheel 301 has an outer opening groove 302 on its back, in addition to the arc-shaped notch. The outer opening groove 302 has an angle of 120°, with one side being open and the other side being closed. A limiting post 805 matching the outer opening groove 302 is provided on the back plate 801. The fitting clearance between the limiting post 805 and the outer opening groove 302 is 0.08mm. By setting the limiting post 805, the positioning limitation can be achieved, that is, after rotating to the position in the forward direction, one side can be opened and the other side can be closed, and after rotating to the position in the reverse direction, one side can be closed and the other side can be opened.

[0077] Of course, to prevent damage to the pipeline and leakage of infusion fluid caused by excessive compression of the pipeline by the clamping mechanism, a leakage sensor can be installed inside the housing and connected to the controller. Once a leakage is detected, an alarm will be triggered and all circuits will be shut down.

[0078] Since the branch pipe 201 is usually made of plastic, it has a certain pressure rebound performance. Therefore, when it returns to the non-pressurized state after being squeezed by 802, it can automatically push the squeeze slider 802 open by utilizing the rebound performance, thereby restoring the branch pipe 201 to the open state.

[0079] Another implementation is to enhance active rebound recovery performance;

[0080] The extrusion slider 802 is equipped with a reset structure, which allows the extrusion slider 802 to naturally reset to fit the arc-shaped protrusion and the arc-shaped notch when the branch pipe 201 is open.

[0081] like Figure 12-13 As shown, the reset structure uses a tension spring 804 connected between one side of the extrusion slider 802 and the side of the opening in the back plate 801; when the extrusion slider 802 returns to its unextruded state after being extruded, the tension spring 804 can automatically pull the extrusion slider 802 back, thereby restoring the branch pipe 201 to the open state.

[0082] Another implementation, for example Figure 14-15 As shown, a tensioning rubber strip 604 is provided between one end of the upper pipe pressure plate 6 of the branch pipe 201 and the surface of the extrusion slider 802; the tensioning rubber strip 604 can automatically pull the extrusion slider 802 back, thereby restoring the branch pipe 201 to the open state; in this embodiment, a section of pipe pressure plate 6 matching the shape of the branch pipe 201 and the main pipe 2 is provided above the connection position of the branch pipe 201 and the main pipe 2 for limiting the position, and the pipe pressure plate 6 passes through the bottom The connecting post 603 with bolt connection hole 105 is fixedly installed inside the detachable housing 1, and the bolt connection hole 105 is fixed by tightening external bolts; the pipeline pressure plate 6 includes a main pipeline section 601 and a branch pipeline section 602. The connecting post 603 is located at the bottom of the branch pipeline section 602 and has a large opening for the branch pipeline 201 and devices to pass through. The inner curvature of the cross section of the main pipeline section 601 and the branch pipeline section 602 is a semi-circle greater than or equal to the outer diameter of the pipeline; when installing and removing the branch conduit 201, it is achieved by installing and removing the external bolts on the bolt connection hole 105.

[0083] The system includes a second limiting seat 108 that limits the main pipeline 2, and photoelectric sensors located on both sides of the second limiting seat 108 and on both sides of each first limiting seat 7. The photoelectric sensors are 940nm infrared photoelectric sensors with an installation spacing of 6mm. When a droplet passes through the light path, it briefly blocks the light intensity, forming a pulse. After being processed by an amplification circuit with a magnification of 100 times, a comparison circuit with a comparison threshold of 2.5V, and a Schmitt trigger shaping circuit, the drop rate is counted and calculated by the controller. The drop rate monitoring component 701 also has a bubble detection function. If a sudden change in the pulse signal interval is detected three times in a row, it is determined that there is a bubble in the pipeline, and a signal is immediately sent to the controller.

[0084] The principle behind calculating the drip rate using a photoelectric sensor is:

[0085] Air medium: low refractive index and small absorption / scattering. When the receiving tube receives strong light, it outputs a high-level / strong signal.

[0086] Liquid medium: Water / medicinal solution has a high refractive index, and infrared light is absorbed, refracted or scattered, resulting in a sudden drop in received light intensity and output of low level / weak signal.

[0087] Drop speed scenario: When a droplet passes through the optical path, it briefly blocks the light intensity, forming a pulse. After amplification / comparison / shaping, the drop speed is counted and calculated by the microcontroller.

[0088] Hardware architecture: In this embodiment, four infrared transmitter / receiver pairs are installed at each water inlet, and the receiver outputs an analog voltage signal; a 4-to-1 MUX multiplexing and gating circuit (model CD4052) is used, and the controller GPIO controls which signal is selected to enter the ADC;

[0089] Comparison and decision circuit: The ADC sampled value is input to the LM339 hardware comparator, compared with the value of the dynamic threshold register, and outputs a 2-bit status code of water presence / bubbles / no water.

[0090] PWM generator, controller with built-in PWM module, frequency 20kHz (ultrasonic band, to avoid motor whine), duty cycle resolution 12bit;

[0091] H-bridge drive circuit: DRV8833, driving the second micro motor;

[0092] Position feedback, 10-bit potentiometer, connected to ADC;

[0093] Control Algorithm: Outer Loop - Drip Rate Loop (Main Pipe): The dripper's infrared sensor outputs a pulse signal (one falling edge per drop), which is connected to the controller's input capture unit; the time interval Δt between adjacent pulses is calculated, and the real-time drip rate is recorded; this is compared with the target drip rate Vset, and the opening adjustment amount is generated using an incremental PID algorithm.

[0094] Inner loop - position loop (branch pipeline): The current opening degree is calculated by reading the potentiometer voltage through the ADC;

[0095] Construct the target opening expression; adopt Bang-Bang + PID hybrid control (rapid rotation when there is a large deviation, and fine PWM adjustment when there is a small deviation).

[0096] Nonlinear compensation lookup table algorithm: Since the flow channel cross-sectional area and motor angle are nonlinear (sensitive at small angles, smooth at large angles), an opening degree and flow rate mapping table is established (stored in Flash, factory calibrated); Feedforward-feedback composite control is adopted: the theoretical opening degree is obtained by looking up the table according to Vset, and the PID output only compensates for the error, which greatly reduces the system response time; Bus arbitration logic: when two channels request switching at the same time (such as emergency medication insertion), a priority encoder (74HC148 concept, software implementation) is used for arbitration; Clock frequency divider circuit: generates phase-shifted PWM signals (90° phase difference) for the four motor drives to reduce peak current.

[0097] The calculated drip rate data is fed back to the controller and displayed on the remote terminal. The controller controls the drip rate control mechanism to adjust the drip rate of the main pipeline 2.

[0098] Among them, such as Figure 5 As shown, the droplet speed control mechanism is located at the front end of the dripper 5 on the main pipeline 2. The droplet speed control mechanism includes a second micro motor 4 located on the side of the main pipeline 2, a cam structure 401 located at the front end of the output shaft of the second micro motor 4, and a clamping adjustment slider 402 located at the front of the cam structure 401 and limited by a limiting slide groove 405. The second micro motor 4 is a 12V DC geared motor with a rated torque of 0.4 N·m and a rated speed of 10 r / min. The transmission ratio with the cam structure 401 is 1:5. The cam structure 401 adopts a sinusoidal curve profile. The maximum lift is 6mm; the main pipe 2 passes through the perforation on the limiting slide 405, and one side is in contact with the clamping adjustment slider 402, while the other side is blocked. The cam structure 401, driven by the second micro motor 4, causes the clamping adjustment slider 402 to gradually move forward, eventually closing the main pipe 2 completely, or gradually moving backward, eventually opening the main pipe 2 completely. The manual speed adjustment dial structure 404 and the drip rate control mechanism have a manual priority cooperative control relationship. After manually adjusting the dial, the automatic drip rate control is paused. The remote terminal can issue a command to override the manual setting and restore the automatic control.

[0099] A multi-channel coordinated switching intelligent infusion control method is provided for controlling the aforementioned multi-channel coordinated switching intelligent infusion control system, comprising the following steps:

[0100] S1. Restore initial state: Through remote terminal control, the main pipeline 2 and each branch pipeline 201 are all in the open state under the control of the liquid droplet speed control mechanism and the opening and closing mechanism, respectively. The controller completes the self-test of each component. If a component fault is detected, a pop-up window will be displayed on the remote terminal and a local alarm will be triggered.

[0101] S2. Install the infusion tubing: Open the detachable housing 1 and the fixing base 8, pull out the used infusion tubing, or directly install the new φ3mm main tubing 2 and 4 φ3mm branch tubing 201 in the empty detachable housing 1, and reinstall the fixing base 8 and the detachable housing 1, ensuring that the branch tubing 201 is properly connected to the opening and closing mechanism and the main tubing 2 is properly connected to the drip rate control mechanism;

[0102] S3. Remote terminal setting of drip sequence and drip rate: First, adjust the manual speed adjustment dial 404 to the fully closed state (main line 2 is fully squeezed, drip rate is zero). Then, after the infusion preparation is completed, select the 4 branch line numbers through the operation interface of the mobile APP remote terminal and drag them to sort them as 1-2-3-4. Set the sequential drip command and input the target drip rate of main line 2 as 30 drops / minute. After setting, adjust the manual speed adjustment dial 404 to the fully open state (dial slides to the maximum stroke, main line 2 is not squeezed). The command is executed immediately, and the system drips in main line 2 at a drip rate of 30 drops / minute.

[0103] S4. Real-time monitoring and precise control of drip rate: The drip rate monitoring component 701 monitors the drip rate data in the four branch pipes 201 and the main pipe 2 in real time to verify whether the corresponding branch pipes 201 are open or closed and to acquire the drip rate data of the main pipe 2. The data is then aggregated and transmitted to the controller and transmitted to the mobile APP remote terminal via Bluetooth 5.0 module. The remote terminal adjusts the drip rate of the main pipe 2 in real time according to the drip rate situation through the drip rate control mechanism. During this process, if the drip rate in one branch pipe 201 is zero and the duration is ≥1s, the opening and closing mechanism automatically switches to the second branch pipe within 2s. When branch pipe 201 is opened, main pipe 2 remains slightly open (drip rate 5 drops / minute) during the switching process to prevent air from entering the pipe. If the drip rate is detected to be consistently below 15 drops / minute for more than 30 seconds, it is determined to be a pipe blockage. The controller controls the second micro motor 4 to finely adjust the pressure adjustment slider 4025mm in the reverse direction. If there is still no improvement, main pipe 2 is closed and an alarm is triggered simultaneously on the remote terminal and local terminal. If air bubbles are detected, main pipe 2 is immediately closed and an alarm is triggered until the system is reset after manual troubleshooting.

[0104] S5. Drip Termination: If it is detected that all four branch lines 201 and the main line 2 are open and the drip rate is zero for ≥3 seconds, a dynamic reminder with pop-up window and sound will be issued on the mobile APP remote terminal. The drip rate control mechanism will be controlled to completely close the main line 2, the local indicator light will stay on, and the buzzer will sound for 10 seconds to indicate that the infusion is complete.

[0105] Repeat steps S1-S5 the next time you use it.

[0106] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-channel coordinated switching intelligent infusion control system, characterized in that, The system includes a detachable housing (1), an infusion tubing system with several branch lines (201) and a main line (2) installed in the detachable housing (1), an opening and closing mechanism for controlling the flow rate of droplets in each branch line (201), a droplet rate monitoring component (701) for monitoring the droplet rate in each branch line (201) and the main line (2), a droplet rate control mechanism for adjusting the output droplet rate of the main line (2), a controller, a wireless communication module, a power supply module (501), and a remote terminal. A manual speed adjustment dial structure (404) is also provided at the front of the droplet rate control mechanism. Each of the opening and closing mechanisms controls the opening and closing of one or two branch pipelines (201), and at least one branch pipeline (201) is opened by the controller command during use; The drip rate monitoring component (701) acquires the drip rate interval time difference of the droplets in the branch pipeline (201) in the open state and the drip rate interval time difference of the droplets flowing to the dripper (5) in the main pipeline (2). After being calculated by the controller, it is converted into the drip rate data of the branch pipeline (201) and the drip rate data of the main pipeline (2) in the corresponding open state. The liquid droplet rate control mechanism controls the droplet rate output by the main pipeline (2) based on the droplet rate data of the main pipeline (2), and after the controller command is output, the droplet rate is controlled so that the output droplet rate is the droplet rate set on the remote terminal. The controller controls the opening and closing actions and sequence of the branch pipes (201) according to the opening and closing instructions set in the remote terminal, and controls the output drip rate of the main pipe (2) according to the instructions set in the remote terminal. It also performs data interaction and transmission through the wireless communication module, and displays the opening and closing status of the branch pipes (201), the drip rate data of the branch pipes (201), and the drip rate data of the main pipe (2) in real time on the remote terminal.

2. The intelligent infusion control system with multi-channel coordinated switching according to claim 1, characterized in that, The opening and closing mechanism is set and arranged according to the number of branch pipes (201). The number of branch pipes (201) N≥2; when the number of branch pipes (201) N is even, the number of opening and closing mechanisms is at least 1 / 2N; when the number of branch pipes (201) N is odd, the number of opening and closing mechanisms is at least 1 / 2(N+1).

3. The intelligent infusion control system with multi-channel coordinated switching according to claim 2, characterized in that, At least one opening and closing mechanism is provided on one side of the branch pipeline (201) to control the opening and closing of the branch pipeline (201).

4. The intelligent infusion control system with multi-channel coordinated switching according to claim 3, characterized in that, The opening and closing mechanism includes a fixed base (8) with a hole for the branch pipe (201) to pass through and a back plate (801), a first micro motor (3) located on the rear side of the fixed base (8), a deflection extrusion wheel (301) installed on the output shaft end of the first micro motor (3), an extrusion slider (802) slidably installed in the cavity formed between the fixed base (8) and the back plate, and a limiting block (803) fixedly installed in the cavity and cooperating with the extrusion slider (802). The branch pipe (201) passes through the extrusion slider (802) and the limiting block (803). Under the rotation of the deflection extrusion wheel (301), the branch pipe (201) is extruded and released, thereby realizing the opening and closing control of the branch pipe (201).

5. The intelligent infusion control system with multi-channel coordinated switching according to claim 4, characterized in that, The deflecting extrusion wheel (301) has an arc-shaped notch on its periphery that matches and fits the arc-shaped protrusion on one side of the extrusion slider (802); the extrusion slider (802) has a U-shaped structure and is set in the groove inside the extrusion slider (802), and the side of the limiting block (803) has an arc-shaped convex surface that matches the arc-shaped concave surface inside the extrusion slider (802). When the branch pipe (201) is closed, the branch pipe (201) is squeezed by the arc-shaped concave surface and the arc-shaped convex surface to close the liquid circuit.

6. The intelligent infusion control system with multi-channel coordinated switching according to claim 5, characterized in that, The deflecting extrusion wheel (301) has an external opening groove (302) on its back side in addition to the arc-shaped notch. One side of the external opening groove (302) is open and the other side is closed. A limiting post (805) matching the external opening groove (302) is provided on the back plate (801).

7. The intelligent infusion control system with multi-channel coordinated switching according to claim 1, characterized in that, The drip rate monitoring component (701) includes a first limiting seat (7) for limiting the passage of each branch pipeline (201), a second limiting seat (108) for limiting the main pipeline (2), and photoelectric sensors located on both sides of the second limiting seat (108) and on both sides of each first limiting seat (7). When the droplet passes through the light path, it briefly blocks the light intensity to form a pulse. After amplification, comparison and shaping, the controller counts and calculates the drip rate.

8. The intelligent infusion control system with multi-channel coordinated switching according to claim 1, characterized in that, The droplet speed control mechanism is located at the front end of the dripper (5) on the main pipeline (2). The droplet speed control mechanism includes a second micro motor (4) located on the side of the main pipeline (2), a cam structure (401) located at the front end of the output shaft of the second micro motor (4), and a pressure adjustment slider (402) located at the front of the cam structure (401) and limited by the limiting slide groove (405). The main pipeline (2) passes through the through hole on the limiting slide groove (405), and one side is in contact with the pressure adjustment slider (402), while the other side is blocked. The cam structure (401) causes the pressure adjustment slider (402) to gradually move forward in the second micro motor (4), eventually making the main pipeline (2) completely closed or gradually move backward, eventually making the main pipeline (2) completely open.

9. A multi-channel coordinated switching intelligent infusion control method, used to control a multi-channel coordinated switching intelligent infusion control system as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Restore the initial state: Through remote terminal control, make the main pipeline (2) and each branch pipeline (201) open under the control of the droplet rate control mechanism and the opening and closing mechanism respectively; S2. Install infusion tubing: Open the detachable housing (1) and the fixing seat (8), pull out the used infusion tubing, or directly install a new infusion tubing in the empty detachable housing (1), and reinstall the fixing seat (8) and the detachable housing (1). S3. Remote terminal setting of drip sequence and drip rate: First, manually close the manual speed adjustment dial structure (404). Then, after the infusion preparation is completed, set the order of opening of each branch pipeline (201) via the remote terminal to execute the drip command and the drip rate command of the main pipeline (2). After setting, fully open the manual speed adjustment dial structure (404), execute the command, and drip in the main pipeline (2) according to the set drip rate. S4. Real-time monitoring and precise control of drip rate: The drip rate monitoring component (701) monitors the drip rate data in each branch pipeline (201) and the main pipeline (2) in real time to verify whether the corresponding branch pipeline (201) is open or closed and to obtain the drip rate data of the main pipeline (2). The data is then collected and transmitted to the controller and transmitted to the remote terminal via the wireless communication module. The remote terminal adjusts the drip rate of the main pipeline (2) at any time according to the drip rate situation through the drip rate control mechanism. During this process, if the drip rate in the branch pipeline (201) in the open state is zero, the subsequent branch pipeline (201) is automatically switched to open through the opening and closing mechanism. S5. Drip termination: If the drip rate is zero when the last branch pipe (201) and the main pipe (2) are both open, a dynamic reminder will be given on the remote terminal, and the drip rate control mechanism will be controlled to completely close the main pipe (2). Repeat steps S1-S5 the next time you use it.

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