Intelligent power supply management system for infusion pump

Abstract

The invention relates to the technical field of management, and particularly discloses an intelligent power supply management system for an infusion pump, which is characterized in that temperature monitoring signals are acquired in real time, the temperature monitoring signals comprise fluid temperature monitoring signals and environment temperature monitoring signals, and a pressure value between an infusion bag and a piston is acquired as a pressure monitoring signal; whether the infusion pump works abnormally or not is preliminarily judged according to the temperature monitoring signal, whether the infusion pump works abnormally or not is secondarily judged according to the pressure monitoring signal, the infusion speed of the infusion pump is dynamically controlled and adjusted based on the temperature monitoring signal and the pressure monitoring signal, and whether power supply fluctuation is abnormal or not is monitored according to the infusion speed of the infusion pump. It is ensured that the infusion pump can be properly compensated or switched in time under any power supply fluctuation working condition, and the operation robustness and the medication precision of the infusion pump under the complex working condition are improved.

Description

Technical Field

[0001] The present invention relates to the field of management technology, and more particularly to an intelligent power supply management system for an infusion pump. Background Art

[0002] With the continuous development of modern pediatric intravenous infusion therapy, infusion pumps have become an important device to ensure accurate drug delivery to pediatric patients, especially high-risk groups such as newborns and low-birth-weight premature infants. The accuracy of microinfusion is limited by the physical properties of the flow drive mechanism and feedback sensor. The existing literature (Liu Wenping. Experimental study on factors affecting flow rate stability and noise of infusion pumps [D]. South China University of Technology, 2012.) provides the following: Figure 2 The structure diagram of the finger peristaltic pump shown in Figure 3 The structural diagram of the disc peristaltic pump shown in FIG. Figure 4 As shown in the structural diagram of the semi-extrusion peristaltic pump, during each driving step of the peristaltic pump, the elasticity of the pipeline and the mechanical dead zone between the pump head and the syringe piston inevitably lead to temperature fluctuations in each drop of liquid, causing unstable changes in the liquid temperature during each step driving process, increasing the uncertainty of subsequent flow control.

[0003] For example, Chinese patent application publication number CN103405825B discloses an infusion pump comprising a housing, a drive module, a piston, a pressure sensing module, and a control module. The housing includes a housing and a guide portion. The housing is used to accommodate an infusion bag and has a liquid outlet formed on its side wall. The drive module is located at the end of the guide portion away from the housing, and the drive end of the drive module can reciprocate along the guide portion. The piston is located within the housing and connected to the drive end. The pressure sensing module is located on the side wall of the piston away from the drive module and detects the pressure between the infusion bag and the piston. The control module is in communication with the drive module and the pressure sensing module. The control module receives the pressure between the infusion bag and the piston measured by the pressure sensing module and controls the drive module based on this pressure value. When the pressure value exceeds a preset pressure value, the control module controls the drive module to stop; when the pressure value is less than or equal to the preset pressure value, the control module controls the drive module to advance at a constant speed. However, the above does not mention any temperature monitoring or temperature compensation measures, and cannot cope with the changes caused by the temperature rise of the fluid in the hose caused by piston drive, making it difficult to ensure the accuracy of infusion under temperature fluctuations, resulting in abnormal power supply of the infusion pump. In order to solve the above problems, a technical solution is now provided. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent power supply management system for an infusion pump, which dynamically controls and adjusts the infusion speed of the infusion pump through temperature monitoring signals and pressure monitoring signals, and monitors whether there is any abnormality in the power supply fluctuation according to the infusion speed of the infusion pump. It is used to solve the problem that it is unable to cope with the changes caused by the temperature rise of the fluid in the hose caused by the piston drive, thereby making it difficult to ensure the accuracy of infusion in a temperature fluctuation environment, resulting in abnormal power supply of the infusion pump, and ensuring that the infusion pump can obtain appropriate compensation or timely switching under any power supply fluctuation conditions, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A power supply intelligent management system for an infusion pump, comprising a multi-point temperature sampling and detection module, a dynamic drive adjustment and compensation module, and an intelligent power supply monitoring and control module; the multi-point temperature sampling and detection module is used to collect temperature monitoring signals in real time; the temperature monitoring signals include fluid temperature monitoring signals and ambient temperature monitoring signals; the dynamic drive adjustment and compensation module is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal, and dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal; the dynamic infusion management module comprises a pressure signal acquisition unit, a first infusion abnormality judgment unit, a second infusion abnormality judgment unit, and an infusion adjustment and analysis unit; the pressure signal acquisition unit is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal; the first infusion abnormality judgment unit is used to preliminarily judge whether the infusion pump has an operating abnormality based on the temperature monitoring signal; the second infusion abnormality judgment unit is used to secondarily judge whether the infusion pump has an operating abnormality based on the pressure monitoring signal; the infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump based on the temperature monitoring signal and the pressure monitoring signal when the infusion pump is operating normally; and the intelligent power supply monitoring and control module is used to monitor whether there is an abnormality in power supply fluctuation based on the infusion speed of the infusion pump.

[0007] As a further solution of the present invention, the multi-point temperature sampling detection module includes a plurality of thermosensitive elements, a first temperature parameter acquisition unit and a second temperature parameter acquisition unit;

[0008] Thermistors are arranged equidistantly on the outer wall of the piston, the outer wall of the hose, the fluid outlet and the pump cavity to obtain temperature monitoring signals;

[0009] The first temperature parameter acquisition unit is used to obtain the temperature parameters of the outer wall of the piston, the outer wall of the hose, and the fluid outlet as the fluid temperature monitoring signal, and divide the ambient temperature monitoring signal into a first fluid temperature monitoring signal, a second fluid temperature monitoring signal, and a third fluid temperature monitoring signal; the first fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the piston, the second fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the hose; the third fluid temperature monitoring signal is the fluid temperature monitoring signal at the fluid outlet;

[0010] The second temperature parameter acquisition unit is used to acquire the temperature parameter in the pump cavity as an ambient temperature monitoring signal.

[0011] As a further solution of the present invention, the first infusion adjustment unit is used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal, including the following steps: pre-setting the initial infusion speed of the infusion pump; generating a temperature discrimination index based on the temperature monitoring signal, and determining whether the temperature discrimination index is greater than a preset temperature threshold upper limit; if the temperature discrimination index is less than or equal to the temperature threshold upper limit, adjusting the infusion speed of the infusion pump to the initial infusion speed to complete a one-time adjustment of the infusion speed of the infusion pump.

[0012] As a further solution of the present invention, the step of the first infusion adjustment unit being used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal also includes: real-time collection of the infusion speed of the infusion pump; if the temperature discrimination index is greater than the upper limit of the temperature threshold, then judging whether the current infusion speed of the infusion pump is equal to the initial infusion speed based on the infusion speed of the infusion pump; if the current infusion speed is not equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating abnormally; if the current infusion speed is equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating normally.

[0013] As a further solution of the present invention, the second infusion discrimination unit is used to secondary determine whether the infusion pump has an abnormal operation based on the pressure monitoring signal; after determining that the infusion pump is operating normally, the pressure monitoring signals at consecutive moments are obtained, and the instantaneous pressure fluctuation characteristics are captured by the difference between the pressure monitoring signals at consecutive adjacent moments. If the instantaneous pressure fluctuation characteristics exceed the preset pressure fluctuation characteristic range, the infusion pump is secondary determined to be abnormal; if the instantaneous pressure fluctuation characteristics do not exceed the pressure fluctuation characteristic range, the infusion pump is secondary determined to be operating normally.

[0014] As a further solution of the present invention, the steps for determining the temperature discrimination index are: extracting the first fluid temperature monitoring signal, the second fluid temperature monitoring signal and the third fluid temperature monitoring signal respectively, obtaining the average of the first fluid temperature monitoring signal and the second fluid temperature monitoring signal at the same moment as the first performance signal and the second performance signal, and using the ratio of the first performance signal and the second performance signal as the first identification index to realize monitoring of the infusion temperature fluctuation, and obtaining the temperature discrimination index based on the ratio of the first identification index and the third fluid temperature monitoring signal.

[0015] As a further solution of the present invention, the infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal when the infusion pump is working normally, obtain the temperature discrimination index and the instantaneous pressure fluctuation characteristics respectively, adjust the infusion speed according to the temperature discrimination index and the instantaneous pressure fluctuation characteristics, and take the middle value of the pressure fluctuation characteristic range to divide the pressure fluctuation characteristic range into an upper limit range and a lower limit range; the upper limit range is composed of the middle value to the upper limit value of the pressure fluctuation characteristic range, and the lower limit range is composed of the lower limit value to the middle value of the pressure fluctuation characteristic range.

[0016] As a further solution of the present invention, the intelligent power supply monitoring and control module includes a power supply signal acquisition unit, an infusion speed association unit, and a power supply anomaly determination unit;

[0017] The power supply signal acquisition unit is used to collect the input voltage and input current of the infusion pump driver module in real time;

[0018] The infusion speed association unit is used to obtain the infusion speed and the input voltage and input current at the corresponding time point in real time, obtain the difference between the infusion speed, input voltage and input current at adjacent time points, determine the fluctuation factor based on the ratio of the difference to the initial value, and perform weighted processing based on the fluctuation factor to obtain the power supply fluctuation characteristics;

[0019] The power supply abnormality judgment unit is used to compare the power supply fluctuation characteristics with the preset power supply fluctuation value. If the power supply fluctuation characteristics are greater than or equal to the preset power supply fluctuation value, there is an abnormality in the power supply fluctuation; if the power supply fluctuation characteristics are less than the preset power supply fluctuation value, there is no abnormality in the power supply fluctuation.

[0020] The technical effects and advantages of the intelligent power supply management system for an infusion pump of the present invention are as follows: the present invention can reflect the temperature gradient of the fluid during the transportation process and take into account the thermal environment of the equipment itself by equidistantly arranging temperature sensing elements at multiple key locations such as the outer wall of the piston, the outer wall of the hose, the fluid outlet and the inside of the pump cavity, thereby ensuring that the temperature discrimination index is more comprehensive and reliable; based on the multi-point temperature information, the first identification index and the proportion of the third fluid temperature signal are calculated respectively, effectively avoiding the misleading of the compensation algorithm by local temperature anomalies, and greatly improving the accuracy and response speed of viscosity compensation; based on the temperature fluctuation trend, the pump working status is preliminarily screened, and when the temperature discrimination index exceeds the limit, an early warning can be issued to capture potential risks in advance, and then the pressure fluctuation characteristics are used for secondary confirmation to ensure that pipeline blockage, leakage or gas embolism are detected. Various abnormal situations can be accurately judged at multiple levels with low false alarms. When the pump is working normally, the pressure fluctuation range is divided into upper and lower limits based on the temperature discrimination index and the instantaneous pressure fluctuation characteristics, and the two compensation strategies of "complement" and "plus one" are adopted respectively. The real-time correction of the infusion speed can be completed without a complex feedback loop. Through the limitation of amplitude and slope, the smoothness of the speed instruction change is guaranteed, and the impact of the pipeline or drive mechanism caused by the sudden change of instructions is avoided, so as to maintain a continuous and stable drug delivery rate. Combining the real-time collected infusion speed with the input voltage and current, the fluctuation factor is calculated and weighted to obtain the power supply fluctuation characteristics, which can identify power supply anomalies in the shortest time limit and ensure that the pump can be properly compensated or switched in time under any power supply fluctuation conditions, significantly improving the system availability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The ambient temperature and humidity monitoring curve graph provided by the present invention;

[0022] Figure 2 A structural diagram of an existing finger-shaped peristaltic pump provided by the present invention;

[0023] Figure 3 A structural diagram of a conventional disc-shaped peristaltic pump provided by the present invention;

[0024] Figure 4 A structural diagram of a semi-extrusion peristaltic pump provided by the present invention;

[0025] Figure 5 The infusion pressure and infusion flow rate monitoring curve provided by the present invention;

[0026] Figure 6 This is a structural diagram of an intelligent power supply management system for an infusion pump provided by the present invention. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the technical solutions described are only part of the present invention, not the entire invention. Based on the technical solutions of the present invention, all other technical solutions obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 6 The figure shows a structural schematic diagram of an intelligent power supply management system for an infusion pump, which includes a multi-point temperature sampling and detection module, a dynamic drive adjustment and compensation module, and an intelligent power supply monitoring and control module; the multi-point temperature sampling and detection module is connected to the dynamic drive adjustment and compensation module, and the dynamic drive adjustment and compensation module is connected to the intelligent power supply monitoring and control module.

[0030] The multi-point temperature sampling detection module is used to collect temperature monitoring signals in real time; the temperature monitoring signals include fluid temperature monitoring signals and ambient temperature monitoring signals;

[0031] The dynamic drive adjustment compensation module is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal, and dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal;

[0032] The intelligent power supply monitoring and control module is used to monitor whether there is any abnormality in the power supply fluctuation according to the infusion speed of the infusion pump.

[0033] Specifically, the multi-point temperature sampling detection module includes a plurality of thermosensitive elements, a first temperature parameter acquisition unit and a second temperature parameter acquisition unit; the thermosensitive elements are connected to the first temperature parameter acquisition unit and the second temperature parameter acquisition unit respectively.

[0034] Thermistors are arranged equidistantly on the outer wall of the piston, the outer wall of the hose, the fluid outlet and the pump cavity to obtain temperature monitoring signals;

[0035] The first temperature parameter acquisition unit is used to obtain the temperature parameters of the outer wall of the piston, the outer wall of the hose, and the fluid outlet as the fluid temperature monitoring signal, and divide the ambient temperature monitoring signal into a first fluid temperature monitoring signal, a second fluid temperature monitoring signal, and a third fluid temperature monitoring signal; the first fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the piston, the second fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the hose; the third fluid temperature monitoring signal is the fluid temperature monitoring signal at the fluid outlet;

[0036] The second temperature parameter acquisition unit is used to acquire the temperature parameter in the pump cavity as an ambient temperature monitoring signal.

[0037] Specifically, the dynamic infusion management module includes a pressure signal acquisition unit, a first infusion abnormality judgment unit, a second infusion abnormality judgment unit and an infusion adjustment analysis unit; the pressure signal acquisition unit is connected to the second infusion abnormality judgment unit, and the first infusion abnormality judgment unit and the second infusion abnormality judgment unit are respectively connected to the infusion adjustment analysis unit.

[0038] The pressure signal acquisition unit is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal;

[0039] The first infusion abnormality determination unit is used to preliminarily determine whether the infusion pump has an operating abnormality based on the temperature monitoring signal;

[0040] The second infusion abnormality determination unit is used to secondarily determine whether the infusion pump has an operating abnormality based on the pressure monitoring signal;

[0041] The infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal when the infusion pump is working normally.

[0042] The first infusion adjustment unit is used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal, including the following steps: pre-setting the initial infusion speed of the infusion pump; generating a temperature discrimination index based on the temperature monitoring signal, and determining whether the temperature discrimination index is greater than a preset temperature threshold upper limit; if the temperature discrimination index is less than or equal to the temperature threshold upper limit, adjusting the infusion speed of the infusion pump to the initial infusion speed to complete a single adjustment of the infusion speed of the infusion pump.

[0043] Specifically, the step of the first infusion adjustment unit being used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal also includes: real-time collection of the infusion speed of the infusion pump; if the temperature discrimination index is greater than the upper limit of the temperature threshold, then judging whether the current infusion speed of the infusion pump is equal to the initial infusion speed based on the infusion speed of the infusion pump; if the current infusion speed is not equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating abnormally; if the current infusion speed is equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating normally.

[0044] The intelligent power supply monitoring and control module includes a power supply signal acquisition unit, an infusion speed association unit and a power supply abnormality judgment unit; the power supply signal acquisition unit is connected to the infusion speed association unit, and the infusion speed association unit is connected to the power supply abnormality judgment unit.

[0045] The power supply signal acquisition unit is used to collect the input voltage and input current of the infusion pump driver module in real time;

[0046] The infusion speed association unit is used to obtain the infusion speed and the input voltage and input current at the corresponding time point in real time, obtain the difference between the infusion speed, input voltage and input current at adjacent time points, determine the fluctuation factor based on the ratio of the difference to the initial value, and perform weighted processing based on the fluctuation factor to obtain the power supply fluctuation characteristics;

[0047] The power supply anomaly detection unit compares the power supply fluctuation characteristics with a preset power supply fluctuation value. If the power supply fluctuation characteristics are greater than or equal to the preset power supply fluctuation value, the power supply fluctuation is abnormal; if the power supply fluctuation characteristics are less than the preset power supply fluctuation value, the power supply fluctuation is not abnormal. The "first infusion anomaly detection" first performs an initial screening based on the temperature discrimination index, and the "second infusion anomaly detection" then performs a secondary confirmation based on the pressure fluctuation characteristics. This two-level cross-validation significantly reduces the risk of false alarms caused by single sensor drift or occasional interference, thereby improving system reliability. After determining "normal operation," the infusion adjustment and analysis unit applies a "complement" or "add one" strategy to the speed in stages based on the temperature discrimination index and the instantaneous pressure fluctuation characteristics. This method compensates for changes in fluid viscosity and tube resistance in real time without complex closed-loop algorithms, ensuring that the infusion rate remains within the set range. The system records key temperature, pressure, and speed data during each adjustment or anomaly detection and can trigger local or remote alarms, ensuring immediate patient safety while providing comprehensive data for fault analysis and quality management.

[0048] Specifically, the second infusion discrimination unit is used to secondarily determine whether the infusion pump has an abnormal operation based on the pressure monitoring signal; after determining that the infusion pump is operating normally, the pressure monitoring signals at consecutive moments are obtained, and the instantaneous pressure fluctuation characteristics are captured by the difference between the pressure monitoring signals at consecutive adjacent moments. If the instantaneous pressure fluctuation characteristics exceed the preset pressure fluctuation characteristic range, the infusion pump is secondarily determined to be operating abnormally; if the instantaneous pressure fluctuation characteristics do not exceed the pressure fluctuation characteristic range, the infusion pump is secondarily determined to be operating normally.

[0049] Specifically, the steps for determining the temperature discrimination index are: extracting the first fluid temperature monitoring signal, the second fluid temperature monitoring signal and the third fluid temperature monitoring signal respectively, obtaining the average of the first fluid temperature monitoring signal and the second fluid temperature monitoring signal at the same time as the first performance signal and the second performance signal, and using the ratio of the first performance signal and the second performance signal as the first identification index to realize the monitoring of the infusion temperature fluctuation, and obtaining the temperature discrimination index based on the ratio of the first identification index and the third fluid temperature monitoring signal.

[0050] Specifically, the infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal when the infusion pump is working normally, obtain the temperature discrimination index and the instantaneous pressure fluctuation characteristics respectively, adjust the infusion speed according to the temperature discrimination index and the instantaneous pressure fluctuation characteristics, and take the middle value of the pressure fluctuation characteristic range to divide the pressure fluctuation characteristic range into an upper limit range and a lower limit range; the upper limit range is composed of the middle value to the upper limit value of the pressure fluctuation characteristic range, and the lower limit range is composed of the lower limit value to the middle value of the pressure fluctuation characteristic range.

[0051] If the instantaneous pressure fluctuation characteristics are within the upper limit range, the infusion speed is adjusted by the ratio of the temperature discrimination index to the ambient temperature monitoring signal: take the complement of the ratio of the temperature discrimination index to the ambient temperature monitoring signal, and perform absolute value processing, and multiply the initial infusion speed by the absolute value as the infusion speed.

[0052] If the instantaneous pressure fluctuation characteristics are within the lower limit, the infusion speed is adjusted by the ratio of the temperature discrimination index to the ambient temperature monitoring signal: the ratio of the temperature discrimination index to the ambient temperature monitoring signal is added by 1, and the initial infusion speed is multiplied by the ratio after adding 1 as the infusion speed.

[0053] By directly reflecting instantaneous changes in pipeline resistance through continuous pressure differences, the system can quickly detect subtle anomalies such as blockages, leaks, or bubbles, thus addressing the blind spots of initial temperature assessment. This dual verification process, which begins with initial temperature screening and then re-verifies pressure, effectively eliminates false alarms caused by occasional jitter in a single signal, improving system stability and reliability. Based on the instantaneous pressure fluctuation and the midpoint of a preset range, the compensation logic is divided into two stages: "upper limit compensation (complement × initial rate)" and "lower limit compensation (plus one × initial rate)." Calculations require only addition, subtraction, and multiplication, avoiding complex feedback control calculations and making it suitable for real-time operation on resource-constrained MCUs. The system slightly increases the rate (the "plus one" stage) for small pressure fluctuations and reduces the flow rate (the "complement" stage) for larger pressure fluctuations. This system automatically adapts to real-time changes in pipeline resistance and temperature, maintaining the infusion rate within a safe and accurate range. Limiting and slope constraints prevent overdosage or missed injections caused by sudden changes in speed. The dual verification process provides immediate alarms and shutdowns, significantly reducing the risk of pipeline failure and misinfusion.

[0054] Specifically, the intelligent power supply monitoring and control module includes a power supply signal acquisition unit, an infusion speed association unit and a power supply abnormality judgment unit; the power supply signal acquisition unit is connected to the infusion speed association unit, and the infusion speed association unit is connected to the power supply abnormality judgment unit.

[0055] The power supply signal acquisition unit is used to collect the input voltage and input current of the infusion pump driver module in real time;

[0056] The infusion speed association unit is used to obtain the infusion speed and the input voltage and input current at the corresponding time point in real time, obtain the difference between the infusion speed, input voltage and input current at adjacent time points, determine the fluctuation factor based on the ratio of the difference to the initial value, and perform weighted processing based on the fluctuation factor to obtain the power supply fluctuation characteristics;

[0057] The power supply abnormality judgment unit is used to compare the power supply fluctuation characteristics with the preset power supply fluctuation value. If the power supply fluctuation characteristics are greater than or equal to the preset power supply fluctuation value, there is an abnormality in the power supply fluctuation; if the power supply fluctuation characteristics are less than the preset power supply fluctuation value, there is no abnormality in the power supply fluctuation.

[0058] Continuously collecting voltage and current data, the system can detect power supply fluctuations in milliseconds, ensuring immediate detection of anomalies and preventing infusion pump shutdowns or drug delivery interruptions caused by voltage dips or surges. By analyzing the infusion rate and corresponding voltage and current changes, and calculating the fluctuation factor using the "difference / initial value" formula, the system can distinguish between inherent power supply fluctuations and sudden load changes, improving the accuracy of anomaly detection. Weighting based on the fluctuation factor smooths short-term jitter, triggering an alarm only when power supply fluctuations consistently exceed the limit. This system sensitively captures fault signals while avoiding false alarms caused by occasional noise. By comparing the system with preset fluctuation thresholds, the system quickly determines whether the power supply is normal or abnormal. System policies can be used to compensate for the power reduction, switch to a backup power source, or issue an alarm, effectively improving system robustness and safety. Each unit has clear functions and can be independently upgraded or replaced. Simple threshold and weighting calculations are suitable for resource-constrained MCUs, and the pump speed-power mapping table can be remotely distributed, facilitating subsequent optimization and maintenance.

[0059] The embodiment of the present invention arranges temperature sensing elements at equal distances at multiple key locations such as the outer wall of the piston, the outer wall of the hose, the fluid outlet and the inside of the pump chamber, which can not only reflect the temperature gradient of the fluid during transportation, but also take into account the thermal environment of the equipment itself, ensuring that the temperature discrimination index is more comprehensive and reliable; based on the multi-point temperature information, the first identification index and the proportion of the third fluid temperature signal are calculated respectively, which effectively avoids the misleading of the compensation algorithm by local temperature anomalies, and greatly improves the accuracy and response speed of viscosity compensation; based on the temperature fluctuation trend, the pump working status is preliminarily screened, and when the temperature discrimination index exceeds the limit, an early warning can be issued to capture potential risks in advance, and then the pressure fluctuation characteristics are used for secondary confirmation to ensure multi-level and low-cost detection of various abnormal situations such as pipeline blockage, leakage or gas embolism. Accurately determine false alarms; when the pump is working normally, the pressure fluctuation range is divided into upper and lower limits based on the temperature discrimination index and the instantaneous pressure fluctuation characteristics, and the two compensation strategies of "complement" and "plus one" are adopted respectively. The real-time correction of the infusion speed can be completed without a complex feedback loop. Through limiting and slope limiting, it not only ensures the smoothness of the speed instruction change, but also avoids the impact of the pipeline or drive mechanism caused by sudden changes in instructions, and maintains a continuous and stable drug delivery rate; combining the real-time collected infusion speed with the input voltage and current, calculates the fluctuation factor and weights it to obtain the power supply fluctuation characteristics, which can identify power supply anomalies in the shortest time limit, ensuring that the pump can be properly compensated or switched in time under any power supply fluctuation conditions, significantly improving system availability and reliability.

[0060] Example 2

[0061] In a hospital infusion room or ward, an infusion pump was operated between 2:00 PM and 2:30 PM. Real-time sampling of the pump environment (temperature, humidity) and infusion status (pressure, flow rate) was performed simultaneously. The monitored pump environment parameters are shown in Table 1, and the monitored infusion status parameters are shown in Table 2.

[0062]

[0063]

[0064] Table 1 Pump body environmental parameter monitoring table

[0065] time Pressure value (kPa) Flow rate (ml / h) Warning line (kPa) 14：00 115 15.2 130 14：05 116 15.3 130 14：10 117 15.4 130 14：15 118 15.5 130 14：20 119 15.5 130 14：25 119.5 15.55 130 14：30 120 15.6 130

[0066] Table 2 Infusion status parameter monitoring table

[0067] The multi-point temperature sampling and detection module is equipped with four sets of thermosensitive elements, monitoring the temperatures of the fluid outlet, hose outer wall, piston outer wall, and pump chamber. The ambient temperature monitoring signal (inside the pump chamber) and the fluid temperature signal are combined to calculate the temperature discrimination index. In this example, the temperature remained consistently within the range of 25±0.3°C and the humidity was 45%–50%, well below the alarm threshold of 26°C, indicating stable temperature control during infusion. The pressure signal acquisition unit and flow rate correlation unit collect pressure and flow rate data every 5 minutes. With fine-tuning of the micro-infusion state, the pump pressure steadily increased from 115kPa to 120kPa, and the flow rate slowly increased from 15.2ml / h to 15.6ml / h. Both values ​​are below the 130kPa warning line, indicating that the pipeline is unobstructed and the infusion rate is within a safe range. If the temperature discrimination index or pressure fluctuations are abnormal, the dynamic drive adjustment compensation module immediately fine-tunes the pump speed according to the aforementioned compensation strategy. The intelligent power supply monitoring and control module ensures power supply stability based on the real-time pump speed and power supply fluctuation characteristics.

[0068] Figure 1 The present invention provides a monitoring graph of ambient temperature and ambient humidity; horizontal axis: sampling time, showing time points from 14:00 to 14:30; left vertical axis (blue): fluid / ambient temperature, unit ℃; right vertical axis (green): ambient humidity, unit %; red dotted line: temperature alarm threshold (26℃). The temperature (blue dot curve) rises slightly between 24.8℃→25.3℃ and remains below the alarm threshold throughout the entire process, indicating that the ambient temperature of the pump body and pipeline remains stable; the humidity (green line) fluctuates slightly between 45%→50%, without sudden changes, meeting the requirements of a normal indoor medical environment; the alarm threshold line (red dotted line) is parallel to the time axis and is always higher than the actual temperature value. Key mouse hover prompts, such as hovering at 14:10, show that the temperature is 25.1℃, the humidity is 45%, and the alarm value is 26℃.

[0069] Figure 5 The infusion pressure and infusion flow rate monitoring curve provided by the present invention; horizontal axis: sampling time, also from 14:00 to 14:30; left vertical axis (blue): pressure in the infusion tube, unit kPa; right vertical axis (purple): infusion flow rate, unit ml / h; red dotted line: pressure warning line (130kPa). The pressure (blue line) starts from 115kPa and rises smoothly to 120kPa, and is always below the warning line, indicating that the pipeline is unobstructed and there is no blockage; the flow rate (purple dot curve) increases slightly from 15.2ml / h to 15.6ml / h, which increases slightly in sync with the pressure, indicating that the drug administration rate is steadily increasing; the warning line (red dotted line) always remains above the data and is not touched or exceeded. Key mouse hovering prompts, such as hovering at 14:05, can be seen that the pressure is 116kPa, the flow rate is 15.3ml / h, and the warning line is 130kPa.

[0070] Through such hyperbolic real-time monitoring, dynamic compensation or alarm mechanisms can be activated in a timely manner when abnormalities occur in the environment or infusion parameters to ensure the safety and accuracy of clinical infusion.

[0071] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0072] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent power supply management system for an infusion pump, comprising a multi-point temperature sampling and detection module, a dynamic drive adjustment and compensation module, and an intelligent power supply monitoring and control module; characterized in that: The multi-point temperature sampling and detection module is used to collect temperature monitoring signals in real time; the temperature monitoring signals include fluid temperature monitoring signals and ambient temperature monitoring signals; the dynamic drive adjustment and compensation module is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal, and dynamically control and adjust the infusion speed of the infusion pump based on the temperature monitoring signal and the pressure monitoring signal; the dynamic infusion management module includes a pressure signal acquisition unit, a first infusion abnormality judgment unit, a second infusion abnormality judgment unit, and an infusion adjustment and analysis unit; the pressure signal acquisition unit is used to obtain the pressure value between the infusion bag and the piston as a pressure monitoring signal; the first infusion abnormality judgment unit is used to preliminarily determine whether the infusion pump has an operating abnormality based on the temperature monitoring signal; The second infusion abnormality determination unit is used to secondarily determine whether the infusion pump has an operating abnormality based on the pressure monitoring signal; The infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal when the infusion pump is working normally; the intelligent power supply monitoring and control module is used to monitor whether there is any abnormality in the power supply fluctuation according to the infusion speed of the infusion pump.

2. The intelligent power supply management system for an infusion pump according to claim 1, characterized in that: The multi-point temperature sampling detection module includes several thermosensitive elements, a first temperature parameter acquisition unit and a second temperature parameter acquisition unit; Thermistors are arranged equidistantly on the outer wall of the piston, the outer wall of the hose, the fluid outlet and the pump cavity to obtain temperature monitoring signals; The first temperature parameter acquisition unit is used to obtain the temperature parameters of the outer wall of the piston, the outer wall of the hose, and the fluid outlet as the fluid temperature monitoring signal, and divide the ambient temperature monitoring signal into a first fluid temperature monitoring signal, a second fluid temperature monitoring signal, and a third fluid temperature monitoring signal; the first fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the piston, the second fluid temperature monitoring signal is the fluid temperature monitoring signal of the outer wall of the hose; the third fluid temperature monitoring signal is the fluid temperature monitoring signal at the fluid outlet; The second temperature parameter acquisition unit is used to acquire the temperature parameter in the pump cavity as an ambient temperature monitoring signal.

3. The intelligent power supply management system for an infusion pump according to claim 2, characterized in that: The first infusion adjustment unit is used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal, including the following steps: pre-setting the initial infusion speed of the infusion pump; generating a temperature discrimination index based on the temperature monitoring signal, and determining whether the temperature discrimination index is greater than a preset temperature threshold upper limit; if the temperature discrimination index is less than or equal to the temperature threshold upper limit, adjusting the infusion speed of the infusion pump to the initial infusion speed to complete a single adjustment of the infusion speed of the infusion pump.

4. The intelligent power supply management system for an infusion pump according to claim 3, characterized in that: The step in which the first infusion adjustment unit is used to preliminarily determine whether the infusion pump has an abnormal operation based on the temperature monitoring signal also includes: real-time collection of the infusion speed of the infusion pump; if the temperature discrimination index is greater than the upper limit of the temperature threshold, then judging whether the current infusion speed of the infusion pump is equal to the initial infusion speed based on the infusion speed of the infusion pump; if the current infusion speed is not equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating abnormally; if the current infusion speed is equal to the initial infusion speed, then preliminarily determining that the infusion pump is operating normally.

5. The intelligent power supply management system for an infusion pump according to claim 1, characterized in that: The second infusion discrimination unit is used to secondary determine whether the infusion pump has an abnormal operation based on the pressure monitoring signal; after determining that the infusion pump is operating normally, the pressure monitoring signals at consecutive moments are obtained, and the instantaneous pressure fluctuation characteristics are captured by the difference between the pressure monitoring signals at consecutive adjacent moments. If the instantaneous pressure fluctuation characteristics exceed the preset pressure fluctuation characteristic range, the infusion pump is secondary determined to be abnormal; If the instantaneous pressure fluctuation characteristic does not exceed the pressure fluctuation characteristic range, it is secondarily determined that the infusion pump is operating normally.

6. The intelligent power supply management system for an infusion pump according to claim 3, characterized in that: The steps for determining the temperature discrimination index are as follows: extracting the first fluid temperature monitoring signal, the second fluid temperature monitoring signal and the third fluid temperature monitoring signal respectively, obtaining the average of the first fluid temperature monitoring signal and the second fluid temperature monitoring signal at the same time as the first performance signal and the second performance signal, and using the ratio of the first performance signal and the second performance signal as the first identification index to monitor the infusion temperature fluctuation, and obtaining the temperature discrimination index based on the ratio of the first identification index and the third fluid temperature monitoring signal.

7. The intelligent power supply management system for an infusion pump according to claim 1, characterized in that: The infusion adjustment and analysis unit is used to dynamically control and adjust the infusion speed of the infusion pump according to the temperature monitoring signal and the pressure monitoring signal when the infusion pump is working normally, obtain the temperature discrimination index and the instantaneous pressure fluctuation characteristics respectively, adjust the infusion speed according to the temperature discrimination index and the instantaneous pressure fluctuation characteristics, and take the middle value of the pressure fluctuation characteristic range to divide the pressure fluctuation characteristic range into an upper limit range and a lower limit range; the upper limit range is composed of the middle value to the upper limit value of the pressure fluctuation characteristic range, and the lower limit range is composed of the lower limit value to the middle value of the pressure fluctuation characteristic range.

8. The intelligent power supply management system for an infusion pump according to claim 1, characterized in that: The intelligent power supply monitoring and control module includes a power supply signal acquisition unit, an infusion speed association unit, and a power supply abnormality judgment unit; The power supply signal acquisition unit is used to collect the input voltage and input current of the infusion pump driver module in real time; The infusion speed association unit is used to obtain the infusion speed and the input voltage and input current at the corresponding time point in real time, obtain the difference between the infusion speed, input voltage and input current at adjacent time points, determine the fluctuation factor based on the ratio of the difference to the initial value, and perform weighted processing based on the fluctuation factor to obtain the power supply fluctuation characteristics; The power supply abnormality determination unit is used to compare the power supply fluctuation characteristics with a preset power supply fluctuation value. If the power supply fluctuation characteristics are greater than or equal to the preset power supply fluctuation value, the power supply fluctuation is abnormal. If the power supply fluctuation characteristic is smaller than the preset power supply fluctuation value, then there is no abnormality in the power supply fluctuation.

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