Intelligent control system and method for micro-injection pump for cardiovascular medicine department

Abstract

The invention relates to the technical field of medical instruments, in particular to an intelligent control system and method for a micro-injection pump for the cardiovascular medicine department, and the system comprises an environment monitoring module, a viscosity adjustment coefficient calculation module, an electromagnetic interference compensation coefficient calculation module and an injection parameter adjustment module. Wherein the environment monitoring module is used for detecting temperature data, humidity data and electromagnetic field intensity data in the working environment of the micro-injection pump in real time; the viscosity adjustment coefficient calculation module is used for calculating a corresponding viscosity adjustment coefficient; the electromagnetic interference compensation coefficient calculation module is used for calculating a corresponding electromagnetic interference compensation coefficient; and the injection parameter adjusting module is used for adjusting parameters of the micro-injection pump. According to the invention, by monitoring and compensating the influence of environmental temperature and humidity and an electromagnetic field on liquid medicine infusion in real time, injection parameters are automatically adjusted, and the accuracy and consistency of the micro-injection pump under complex environmental conditions are ensured, so that the treatment safety and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an intelligent control system and method for a micro-injection pump used in cardiovascular medicine. Background Art

[0002] In recent years, micro-injection pumps have been widely used in the treatment of cardiovascular medicine. Especially in precise drug infusion, micro-injection pumps play an important role. Micro-injection pumps can accurately control the injection speed, pressure, and dose of the liquid medicine, effectively avoiding the inaccuracy and instability in the traditional infusion method. However, with the wide application of injection pumps in various environments, external factors such as temperature, humidity, and electromagnetic fields have significantly affected the stability and accuracy of liquid medicine infusion. For example, changes in environmental temperature may cause changes in the viscosity of the liquid medicine, thus affecting the fluidity of the liquid medicine. Changes in humidity may also interfere with the concentration and fluidity of the liquid medicine. In addition, electromagnetic field interference will also have an adverse impact on the sensors and control systems of the injection pump, thus affecting the infusion accuracy of the liquid medicine. These changes in environmental factors will lead to deviations in the drug infusion process, bringing risks to the treatment effect of patients.

[0003] Although the existing technologies have solved the control accuracy problem of micro-injection pumps to a certain extent, most of the existing technologies have not fully considered external environmental factors. Especially in the case of dynamic temperature and humidity changes and electromagnetic interference, there is a lack of an effective compensation mechanism. Currently, many micro-injection pump systems only rely on fixed injection parameters and fail to automatically adjust according to real-time environmental data. This makes the adaptability of micro-injection pumps in complex environmental conditions poor and unable to ensure the accuracy and consistency of drug infusion. Summary of the Invention

[0004] Based on the above purposes, the present invention provides an intelligent control system and method for a micro-injection pump used in cardiovascular medicine.

[0005] An intelligent control system for a micro-injection pump used in cardiovascular medicine includes an environmental monitoring module, a viscosity adjustment coefficient calculation module, an electromagnetic interference compensation coefficient calculation module, and an injection parameter adjustment module. Among them: The environmental monitoring module: is used to monitor the temperature data, humidity data, and electromagnetic field intensity data in the working environment of the micro-injection pump in real time; The viscosity adjustment coefficient calculation module: is used to analyze the viscosity change of the liquid medicine according to the temperature data and humidity data provided by the environmental monitoring module, and calculate the corresponding viscosity adjustment coefficient; The electromagnetic interference compensation coefficient calculation module: is used to analyze the interference of the electromagnetic field on the liquid medicine infusion process according to the electromagnetic field intensity data provided by the environmental monitoring module, and calculate the corresponding electromagnetic interference compensation coefficient; Injection parameter adjustment module: Based on the viscosity adjustment coefficient and electromagnetic interference compensation coefficient calculated by the liquid medicine characteristic analysis module, it automatically adjusts the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature, humidity and electromagnetic field strength on injection accuracy.

[0006] Optionally, the environmental monitoring module includes a temperature detection unit, a humidity detection unit, an electromagnetic field strength detection unit and a data transmission unit; among them: Temperature monitoring unit: It is used to monitor the temperature in the working environment of the micro-injection pump in real time, capture the change of the environmental temperature within milliseconds by using a temperature sensor, and transmit the monitored temperature data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Humidity monitoring unit: It is used to monitor the humidity in the working environment of the micro-injection pump in real time, measure the relative humidity by using a digital humidity sensor, and transmit the humidity data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Electromagnetic field strength detection unit: It is used to monitor the electromagnetic field strength in the working environment of the micro-injection pump in real time, detect and quantify the electromagnetic field strength in the environment by using an electromagnetic field sensor, and transmit the electromagnetic field strength data to the electromagnetic interference compensation coefficient calculation module in the form of a digital signal; Data transmission unit: It is used to receive digital signals from the temperature detection unit, humidity detection unit and electromagnetic field strength detection unit, perform preliminary data processing, and transmit the processed data to the viscosity adjustment coefficient calculation module and the electromagnetic interference compensation coefficient calculation module through a high-speed data bus.

[0007] Optionally, the viscosity adjustment coefficient calculation module includes a temperature data processing unit, a humidity data processing unit, a viscosity analysis unit and a viscosity adjustment coefficient calculation unit; among them: Temperature data processing unit: It is used to receive the temperature data provided by the environmental monitoring module, analyze the influence of temperature on the viscosity of the liquid medicine by using a temperature compensation algorithm, and calculate the temperature compensation factor according to the following formula: , where is the temperature compensation factor, is the temperature compensation coefficient, is the current environmental temperature, is the reference temperature; Humidity data processing unit: It is used to receive the humidity data provided by the environmental monitoring module, evaluate the influence of humidity on the viscosity of the liquid medicine by using a humidity compensation algorithm, and calculate the humidity compensation factor according to the following formula: , where is the humidity compensation factor, is the humidity compensation coefficient, is the current environmental humidity, is the reference humidity; Viscosity analysis unit: used to combine the temperature compensation factor and the humidity compensation factor, and calculate the current viscosity change of the liquid medicine by using the viscosity model formula; Viscosity adjustment coefficient calculation unit: based on the output result of the viscosity analysis unit, apply the proportional-integral-differential control algorithm to calculate the corresponding viscosity adjustment coefficient.

[0008] Optionally, the viscosity analysis unit specifically includes: Receive compensation factor: receive the temperature compensation factor output by the temperature data processing unit and the humidity data processing unit and the humidity compensation factor ; Calculate viscosity change factor: use the following formula to combine the temperature compensation factor and the humidity compensation factor to calculate the viscosity change factor of the liquid medicine: , where is the viscosity change factor of the liquid medicine, is the temperature compensation factor, is the humidity compensation factor; Apply viscosity model: according to the basic viscosity of the liquid medicine and the viscosity change factor , use the following viscosity model formula to calculate the viscosity of the liquid medicine under the current environmental conditions: , where is the calculated current viscosity of the liquid medicine, is the initial viscosity of the liquid medicine under standard environmental conditions.

[0009] Optionally, the viscosity adjustment coefficient calculation unit specifically includes: Error calculation: used to calculate the difference between the current viscosity of the liquid medicine and the target viscosity ; Proportional term calculation: calculate the proportional term according to the viscosity error , and its calculation formula is: ; where is the proportional gain coefficient; Integral term calculation: used to accumulate the viscosity error to calculate the integral term , and its calculation formula is: , where is the integral term at the current time , is the integral gain coefficient, is the sampling time interval, is the integral term at the previous time point; Differential term calculation: used to calculate the viscosity error Rate of change and calculate the differential term accordingly , and its calculation formula is: ; where is the current time of the differential term, is the differential gain coefficient, is the viscosity error at the previous time point; Viscosity adjustment coefficient calculation: Combine the proportional term , the integral term and the differential term to calculate the final viscosity adjustment coefficient , and its calculation formula is: .

[0010] Optionally, the electromagnetic interference compensation coefficient calculation module includes an electromagnetic field data analysis unit, an interference mode recognition unit, a compensation strategy formulation unit, and a compensation coefficient calculation unit; where: Electromagnetic field data analysis unit: Used to receive the electromagnetic field intensity data provided by the environmental monitoring module, analyze the specific impact of the electromagnetic field intensity on the drug infusion process of the micro-injection pump, and calculate the electromagnetic interference analysis factor according to the following formula: , where is the electromagnetic interference analysis factor, is the electromagnetic interference sensitivity coefficient, is the electromagnetic field intensity in the current environment, is the reference electromagnetic field intensity; Interference mode recognition unit: Based on the analysis results of the electromagnetic field data analysis unit, identify the type of electromagnetic interference, and the judgment formula is: ; where is the interference mode category, is the detected interference frequency, is the cut-off frequency between high-frequency and low-frequency interference, and are the recognition thresholds for high-frequency and low-frequency interference respectively; Compensation strategy formulation unit: Used to formulate corresponding electromagnetic interference compensation strategies according to the interference types identified by the interference mode recognition unit; Compensation coefficient calculation unit: Based on the compensation strategies of the compensation strategy formulation unit, calculate the corresponding electromagnetic interference compensation coefficients.

[0011] Optionally, the compensation strategy formulation unit specifically includes: Compensation strategy 1: When it is identified as high-frequency interference, the compensation strategy is to reduce the operating frequency of the injection pump to avoid the interference frequency band; the compensation formula is: , where is the operating frequency of the current pump, is the frequency adjustment amount; Compensation Strategy 2: When low-frequency interference is identified, the compensation strategy reduces the impact of low-frequency electromagnetic waves on the infusion of the liquid medicine by adjusting the power filtering ability and electromagnetic isolation degree of the pump; the compensation formula is: , where is the filtered power supply voltage, is the input power supply voltage, is the filtering gain coefficient; Compensation Strategy 3: When there is no interference, the compensation strategy keeps the current operating mode of the pump unchanged and no frequency adjustment or power filtering is required.

[0012] Optionally, the compensation coefficient calculation unit includes: Determine the compensation factor: Determine the corresponding compensation factor according to the received compensation strategy , and its calculation formula is: , where is the compensation factor, is the preset compensation gain coefficient; Calculate the final compensation coefficient: Synthesize the compensation coefficients under different interference types to determine the final electromagnetic interference compensation coefficient , and the formula is: ; where is the interference mode category; is the high-frequency interference compensation coefficient; is the low-frequency interference compensation coefficient.

[0013] Optionally, the injection parameter adjustment module includes Injection speed adjustment unit: used to receive the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and calculate the adjusted injection speed according to the following formula. The formula is: , where is the adjusted injection speed, is the reference injection speed, and are the injection speed adjustment coefficients; Injection pressure adjustment unit: used to calculate the adjusted injection pressure according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and the formula is: , where is the reference injection pressure, and is the injection pressure adjustment coefficient; Liquid medicine dose adjustment unit: used to calculate the adjusted liquid medicine dose according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and the formula is: , where is the reference liquid medicine dose, and and are the liquid medicine dose adjustment coefficients.

[0014] An intelligent control method for a micro-injection pump used in cardiovascular medicine is realized by the above-mentioned intelligent control system for a micro-injection pump used in cardiovascular medicine, and includes the following steps: S1: Real-time monitor the temperature data, humidity data and electromagnetic field intensity data in the working environment of the micro-injection pump; S2: Based on the temperature data and humidity data detected in S1, analyze the viscosity change of the liquid medicine and calculate the corresponding viscosity adjustment coefficient; S3: Based on the electromagnetic field intensity data detected in S1, analyze the interference of the electromagnetic field on the liquid medicine infusion process and calculate the corresponding electromagnetic interference compensation coefficient; S4: Based on the viscosity adjustment coefficient and electromagnetic interference compensation coefficient calculated in S2 and S3, automatically adjust the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature and humidity and electromagnetic field intensity on the injection accuracy.

[0015] Advantages of the present invention: In the present invention, by real-time monitoring the temperature, humidity and electromagnetic field intensity in the environment, the influence of these environmental factors on the liquid medicine infusion is accurately analyzed and compensated; through the calculation and application of the viscosity adjustment coefficient and electromagnetic interference compensation coefficient, the system can automatically adjust the injection speed, pressure and liquid medicine dose parameters to ensure the accuracy and consistency of drug infusion; compared with the traditional injection pump system, the adaptability of the micro-injection pump in a complex environment is effectively improved, the accuracy of drug infusion under different working conditions is ensured, and the risk of treatment deviation caused by environmental factors is reduced.

[0016] In the present invention, through a flexible compensation mechanism, the stability and reliability of the micro-injection pump in various working environments are greatly improved, especially in the case of large temperature and humidity changes or large electromagnetic field intensity fluctuations; the system can achieve real-time adjustment to ensure that the drug infusion during the treatment process meets the expected standards and avoid inaccurate infusion caused by external interference. Description of the drawings

[0017] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative work, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the intelligent control system of the micro-injection pump for the embodiments of the present invention; Figure 2 Schematic diagram of the intelligent control method of the micro-injection pump for the embodiments of the present invention. Detailed implementation manners

[0019] The present invention will be described in detail below in conjunction with the drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0020] It should be noted that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes such specific features, structures or characteristics. In addition, when combining embodiments to describe specific features, structures or characteristics, implementing such features, structures or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0021] Generally, the terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but instead, at least in part depending on the context, allowing for the existence of other factors that may not be explicitly described.

[0022] As Figure 1 shown, an intelligent control system of a micro-injection pump for cardiovascular medicine includes an environmental monitoring module, a viscosity adjustment coefficient calculation module, an electromagnetic interference compensation coefficient calculation module, and an injection parameter adjustment module; wherein: Environmental monitoring module: used to monitor the temperature data, humidity data, and electromagnetic field strength data in the working environment of the micro-injection pump in real time; Viscosity adjustment coefficient calculation module: It is used to analyze the viscosity change of the liquid medicine according to the temperature data and humidity data provided by the environmental monitoring module, and calculate the corresponding viscosity adjustment coefficient to ensure the fluidity and stability of the liquid medicine under different environmental conditions; Electromagnetic interference compensation coefficient calculation module: It is used to analyze the interference of the electromagnetic field on the liquid medicine infusion process according to the electromagnetic field intensity data provided by the environmental monitoring module, and calculate the corresponding electromagnetic interference compensation coefficient to reduce the influence of electromagnetic interference on the injection accuracy; Injection parameter adjustment module: Based on the viscosity adjustment coefficient calculated by the liquid medicine characteristic analysis module and the electromagnetic interference compensation coefficient calculated by the electromagnetic interference compensation coefficient calculation module, it automatically adjusts the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature, humidity and electromagnetic field intensity on the injection accuracy, and ensure the accuracy and consistency of drug infusion.

[0023] The environmental monitoring module includes a temperature detection unit, a humidity detection unit, an electromagnetic field intensity detection unit and a data transmission unit; among them: Temperature monitoring unit: It is used to monitor the temperature in the working environment of the micro-injection pump in real time, capture the change of the environmental temperature within milliseconds by using a temperature sensor, and transmit the monitored temperature data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Humidity monitoring unit: It is used to monitor the humidity in the working environment of the micro-injection pump in real time, measure the relative humidity by using a digital humidity sensor, and transmit the humidity data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Electromagnetic field intensity detection unit: It is used to monitor the electromagnetic field intensity in the working environment of the micro-injection pump in real time, detect and quantify the electromagnetic field intensity in the environment by using an electromagnetic field sensor, and transmit the electromagnetic field intensity data to the electromagnetic interference compensation coefficient calculation module in the form of a digital signal; Data transmission unit: It is used to receive the digital signals from the temperature detection unit, the humidity detection unit and the electromagnetic field intensity detection unit, perform preliminary data processing, and transmit the processed data to the viscosity adjustment coefficient calculation module and the electromagnetic interference compensation coefficient calculation module through a high-speed data bus; the above-mentioned units realize stable data acquisition and transmission through an internal connection circuit, ensuring that the environmental monitoring module can accurately and real-time obtain and transmit the data of temperature, humidity and electromagnetic field intensity, and provide reliable data support for subsequent liquid medicine characteristic analysis and injection parameter adjustment.

[0024] The viscosity adjustment coefficient calculation module includes a temperature data processing unit, a humidity data processing unit, a viscosity analysis unit and a viscosity adjustment coefficient calculation unit; among them: Temperature data processing unit: It is used to receive the temperature data provided by the environmental monitoring module, analyze the influence of temperature on the viscosity of the liquid medicine by using the temperature compensation algorithm, and calculate the temperature compensation factor according to the following formula: , where is the temperature compensation factor, is the temperature compensation coefficient, is the current ambient temperature, is the reference temperature; The temperature compensation coefficient is determined by performing a linear regression analysis on the experimental data of the viscosity change of the liquid medicine under different temperature conditions. The specific calculation formula is: , where represents the change in the viscosity of the liquid medicine, represents the change in temperature; Humidity data processing unit: It is used to receive the humidity data provided by the environmental monitoring module, evaluate the influence of humidity on the viscosity of the liquid medicine by applying the humidity compensation algorithm, and calculate the humidity compensation factor according to the following formula: , where is the humidity compensation factor, is the humidity compensation coefficient, is the current ambient humidity, is the reference humidity; The humidity compensation coefficient is determined by performing a linear regression analysis on the experimental data of the viscosity change of the liquid medicine under different humidity conditions. The specific calculation formula is: , where represents the change in the viscosity of the liquid medicine, represents the change in humidity; Viscosity analysis unit: It is used to combine the temperature compensation factor and the humidity compensation factor, and calculate the current viscosity change situation of the liquid medicine by using the viscosity model formula; Viscosity adjustment coefficient calculation unit: Based on the output result of the viscosity analysis unit, apply the proportional-integral-derivative (PID) control algorithm to calculate the corresponding viscosity adjustment coefficient to adjust the injection parameters of the micro-injection pump to ensure the fluidity and injection accuracy of the liquid medicine under different environmental conditions; The above units exchange information through the internal data bus to ensure the real-time processing and analysis of temperature and humidity data; The temperature data processing unit and the humidity data processing unit independently process their respective data and transfer the compensation factors to the viscosity analysis unit; The viscosity analysis unit comprehensively considers the influence of temperature and humidity and accurately evaluates the change situation of the viscosity of the liquid medicine; Finally, the viscosity adjustment coefficient calculation unit calculates the appropriate adjustment coefficient according to the analysis result to realize the dynamic optimization adjustment of the injection parameters.

[0025] The viscosity analysis unit specifically includes: Receiving compensation factor: Receiving the temperature compensation factor output by the temperature data processing unit and the humidity data processing unit and humidity compensation factor ; Calculate the viscosity change factor: Combine the temperature compensation factor and the humidity compensation factor using the following formula to calculate the viscosity change factor of the liquid medicine: , where is the viscosity change factor of the liquid medicine, is the temperature compensation factor, is the humidity compensation factor. This step comprehensively considers the dual effects of temperature and humidity on the viscosity of the liquid medicine; Apply the viscosity model: According to the basic viscosity of the liquid medicine and the viscosity change factor , use the following viscosity model formula to calculate the viscosity of the liquid medicine under the current environmental conditions: , where is the calculated current viscosity of the liquid medicine, is the initial viscosity of the liquid medicine under standard environmental conditions; This model is based on the linear relationship between the viscosity of the liquid medicine and the changes in temperature and humidity, ensuring the fluidity and injection accuracy of the liquid medicine under different environmental conditions.

[0026] The viscosity adjustment coefficient calculation unit specifically includes: Error calculation: Used to calculate the difference between the current viscosity of the liquid medicine and the target viscosity , and its calculation formula is as follows: , where is the viscosity error at the current time , is the current viscosity of the liquid medicine calculated by the viscosity analysis unit, is the target viscosity value; Proportional term calculation: Calculate the proportional term according to the viscosity error , and its calculation formula is: ; where is the proportional gain coefficient, which determines the response intensity of the proportional term to the viscosity error; Integral term calculation: Used to accumulate the viscosity error to calculate the integral term , and its calculation formula is: , where is the integral term at the current time , is the integral gain coefficient, is the sampling time interval, is the integral term at the previous time point; Differential term calculation: Used to calculate the change rate of the viscosity error And calculate the differential term accordingly , and its calculation formula is: ; where is the current time of the differential term, is the differential gain coefficient, is the viscosity error at the previous time point; Viscosity adjustment coefficient calculation: Combine the proportional term , the integral term and the differential term to calculate the final viscosity adjustment coefficient , and its calculation formula is: , which is used as the basis for the injection parameter adjustment module to adjust the injection speed, pressure and dose; By introducing the proportional-integral-differential control algorithm in the viscosity adjustment coefficient calculation unit, the above steps can comprehensively consider the current error, historical error and error change rate, accurately calculate the viscosity adjustment coefficient, and ensure that the micro-injection pump maintains high-precision drug infusion under various environmental conditions.

[0027] The electromagnetic interference compensation coefficient calculation module includes an electromagnetic field data analysis unit, an interference mode recognition unit, a compensation strategy formulation unit and a compensation coefficient calculation unit; where: Electromagnetic field data analysis unit: Used to receive the electromagnetic field intensity data provided by the environmental monitoring module, analyze the specific impact of the electromagnetic field intensity on the liquid infusion process of the micro-injection pump, and calculate the electromagnetic interference analysis factor according to the following formula: , where is the electromagnetic interference analysis factor, is the electromagnetic interference sensitivity coefficient, is the electromagnetic field intensity in the current environment, is the reference electromagnetic field intensity; The electromagnetic interference sensitivity coefficient is determined by experimental measurement of the interference degree during the liquid infusion process under different electromagnetic field intensities and then using the linear regression analysis method. The specific calculation formula is: , where represents the change in liquid viscosity, represents the change in electromagnetic field intensity; Interference mode recognition unit: Based on the analysis results of the electromagnetic field data analysis unit, identify the type of electromagnetic interference, and the judgment formula is: ; where is the interference mode category, is the detected interference frequency, is the demarcation frequency between high-frequency and low-frequency interference, and They are the recognition thresholds for high-frequency and low-frequency interferences respectively; by comparing the electromagnetic interference analysis factor with the preset threshold and combining the interference frequency , the interference type and degree are accurately classified to formulate corresponding compensation strategies; Compensation strategy formulation unit: used to formulate corresponding electromagnetic interference compensation strategies according to the interference type identified by the interference pattern recognition unit; Compensation coefficient calculation unit: based on the compensation strategy formulated by the compensation strategy formulation unit, calculate the corresponding electromagnetic interference compensation coefficient to reduce the impact of electromagnetic interference on the liquid medicine infusion process; the above units exchange information through the internal data bus to ensure the real-time processing and analysis of the electromagnetic field strength data; the electromagnetic field data analysis unit accurately determines the electromagnetic interference sensitivity coefficient through the linear regression analysis method, the interference pattern recognition unit accurately classifies the interference type and degree according to the analysis result, the compensation strategy formulation unit formulates specific compensation strategies according to the identified interference pattern, and finally the compensation coefficient calculation unit calculates the electromagnetic interference compensation coefficient according to the compensation strategy; through this series of modular processing, the system can effectively compensate for the impact of the change in the electromagnetic field strength on the liquid medicine infusion accuracy of the micro-injection pump, ensuring the accuracy and consistency of drug infusion.

[0028] The compensation strategy formulation unit specifically includes: Compensation strategy 1: When it is identified as high-frequency interference, the compensation strategy is to reduce the operating frequency of the injection pump to avoid the interference frequency band and enhance the frequency adjustment ability of the pump to ensure the stability of the liquid medicine infusion process; the compensation formula is: , where is the current operating frequency of the pump, is the frequency adjustment amount, which is determined based on the interference analysis factor and the system response characteristics; Compensation strategy 2: When it is identified as low-frequency interference, the compensation strategy is to adjust the power supply filtering ability and electromagnetic isolation degree of the pump to reduce the impact of low-frequency electromagnetic waves on the liquid medicine infusion, and use the power supply filtering module to enhance the anti-interference ability of low-frequency signals; the compensation formula is: , where is the filtered power supply voltage, is the input power supply voltage, is the filtering gain coefficient, and its calculation formula is: , where is the filtering gain coefficient, which is determined by system calibration and experimental data according to the low-frequency interference intensity and the system filtering ability requirement; Compensation Strategy 3: When there is no interference, the compensation strategy keeps the current working mode of the pump unchanged, without the need for frequency adjustment or power filtering. At this time, the system can continue to perform liquid medicine infusion according to the standard working mode.

[0029] The compensation coefficient calculation unit includes: Determine the compensation factor: According to the received compensation strategy, determine the corresponding compensation factor , and its calculation formula is: , where is the compensation factor, is the preset compensation gain coefficient, set according to the interference type Specifically, when is high-frequency interference, is set to ; when is low-frequency interference, is set to ; Calculate the final compensation coefficient: Integrate the compensation coefficients under different interference types to determine the final electromagnetic interference compensation coefficient , and the formula is: ; Among them, is the interference mode category, determined according to the recognition result of the interference mode recognition unit; is the high-frequency interference compensation coefficient; is the low-frequency interference compensation coefficient; among them, is determined by analyzing the response characteristics and experimental data of the system under high-frequency interference conditions. The specific calculation formula is: , where is the voltage adjustment amount of the syringe pump under high-frequency interference conditions; is determined by analyzing the response characteristics and experimental data of the system under low-frequency interference conditions. The specific calculation formula is: , where is the current adjustment amount of the filter under low-frequency interference conditions.

[0030] The injection parameter adjustment module includes Injection speed adjustment unit: used to receive the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and calculate the adjusted injection speed according to the following formula. The formula is: , where is the adjusted injection speed, is the reference injection speed, and are the injection speed adjustment coefficients; Injection pressure adjustment unit: used to adjust according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , calculate the adjusted injection pressure , the formula is: , where is the reference injection pressure, and are the injection pressure adjustment coefficients; Liquid medicine dose adjustment unit: used to adjust according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , calculate the adjusted liquid medicine dose , the formula is: , where is the reference liquid medicine dose, and are the liquid medicine dose adjustment coefficients; Through the coordinated work of the above units, the injection parameter adjustment module can automatically adjust the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient, so as to ensure that under different environmental conditions, the micro-injection pump can maintain accurate drug infusion effect, eliminate the influence of external factors on the accuracy of the injection process, and improve the accuracy and stability of liquid medicine infusion.

[0031] As Figure 2 shown, an intelligent control method for a micro-injection pump for cardiovascular medicine is implemented by the above intelligent control system for a micro-injection pump for cardiovascular medicine, and includes the following steps: S1: Real-time monitor the temperature data, humidity data and electromagnetic field intensity data in the working environment of the micro-injection pump; S2: Based on the temperature data and humidity data detected in S1, analyze the viscosity change of the liquid medicine, and calculate the corresponding viscosity adjustment coefficient; S3: Based on the electromagnetic field intensity data detected in S1, analyze the interference of the electromagnetic field on the liquid medicine infusion process, and calculate the corresponding electromagnetic interference compensation coefficient; S4: Based on the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient calculated in S2 and S3, automatically adjust the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature and humidity and electromagnetic field intensity on the injection accuracy.

[0032] By implementing the above method, it is possible to monitor and respond to the changes in environmental temperature and humidity and electromagnetic field intensity in real time, automatically adjust the injection parameters, ensure the accuracy and consistency of drug infusion; effectively improve the precise control ability of liquid medicine infusion, enhance the stability and reliability of the system under complex environmental conditions, and improve the safety and efficacy of cardiovascular medicine treatment.

[0033] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. Additionally, to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent control system for a micro-injection pump used in cardiovascular medicine, characterized in that, It includes an environmental monitoring module, a viscosity adjustment coefficient calculation module, an electromagnetic interference compensation coefficient calculation module, and an injection parameter adjustment module; among them: Environmental monitoring module: It is used to monitor the temperature data, humidity data, and electromagnetic field intensity data in the working environment of the micro-injection pump in real time; Viscosity adjustment coefficient calculation module: It is used to analyze the viscosity change of the liquid medicine according to the temperature data and humidity data provided by the environmental monitoring module, and calculate the corresponding viscosity adjustment coefficient; Electromagnetic interference compensation coefficient calculation module: It is used to analyze the interference of the electromagnetic field on the liquid medicine infusion process according to the electromagnetic field intensity data provided by the environmental monitoring module, and calculate the corresponding electromagnetic interference compensation coefficient; Injection parameter adjustment module: Based on the viscosity adjustment coefficient calculated by the liquid medicine characteristic analysis module and the electromagnetic interference compensation coefficient, it automatically adjusts the injection speed, injection pressure, and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature and humidity and electromagnetic field intensity on the injection accuracy.

2. The intelligent control system of a micro-injection pump for cardiovascular medicine according to claim 1, characterized in that, The environmental monitoring module includes a temperature detection unit, a humidity detection unit, an electromagnetic field intensity detection unit, and a data transmission unit; among them: Temperature monitoring unit: It is used to monitor the temperature in the working environment of the micro-injection pump in real time, capture the change of the environmental temperature within milliseconds by using a temperature sensor, and transmit the monitored temperature data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Humidity monitoring unit: It is used to monitor the humidity in the working environment of the micro-injection pump in real time, measure the relative humidity by using a digital humidity sensor, and transmit the humidity data to the viscosity adjustment coefficient calculation module in the form of a digital signal; Electromagnetic field intensity detection unit: It is used to monitor the electromagnetic field intensity in the working environment of the micro-injection pump in real time, detect and quantify the electromagnetic field intensity in the environment by using an electromagnetic field sensor, and transmit the electromagnetic field intensity data to the electromagnetic interference compensation coefficient calculation module in the form of a digital signal; Data transmission unit: It is used to receive the digital signals from the temperature detection unit, humidity detection unit, and electromagnetic field intensity detection unit, perform preliminary data processing, and transmit the processed data to the viscosity adjustment coefficient calculation module and the electromagnetic interference compensation coefficient calculation module through a high-speed data bus.

3. The intelligent control system of a micro-injection pump for cardiovascular medicine according to claim 1, wherein The viscosity adjustment coefficient calculation module includes a temperature data processing unit, a humidity data processing unit, a viscosity analysis unit, and a viscosity adjustment coefficient calculation unit; among them: Temperature data processing unit: It is used to receive the temperature data provided by the environmental monitoring module, analyze the influence of temperature on the viscosity of the liquid medicine by using the temperature compensation algorithm, and calculate the temperature compensation factor according to the following formula: , where is the temperature compensation factor, is the temperature compensation coefficient, is the current ambient temperature, is the reference temperature; Humidity data processing unit: It is used to receive the humidity data provided by the environmental monitoring module, apply the humidity compensation algorithm to evaluate the influence of humidity on the viscosity of the liquid medicine, and calculate the humidity compensation factor according to the following formula: , where is the humidity compensation factor, is the humidity compensation coefficient, is the current ambient humidity, is the reference humidity; Viscosity analysis unit: It is used to calculate the current viscosity change of the liquid medicine by using the viscosity model formula in combination with the temperature compensation factor and the humidity compensation factor; Viscosity adjustment coefficient calculation unit: Based on the output result of the viscosity analysis unit, it applies the proportional-integral-derivative control algorithm to calculate the corresponding viscosity adjustment coefficient.

4. The intelligent control system of a micro-injection pump for cardiovascular medicine according to claim 3, characterized in that, The viscosity analysis unit specifically includes: Received compensation factors: temperature compensation factors output by the received temperature data processing unit and the humidity data processing unit and humidity compensation factors ; Calculate the viscosity change factor: Combine the temperature compensation factor and the humidity compensation factor using the following formula to calculate the viscosity change factor of the liquid medicine: , where is the viscosity change factor of the liquid medicine, is the temperature compensation factor, is the humidity compensation factor; Applied viscosity model: Based on the basic viscosity of the liquid medicine and the viscosity change factor , use the following viscosity model formula to calculate the viscosity of the liquid medicine under the current environmental conditions: , where is the calculated current viscosity of the liquid medicine, is the initial viscosity of the liquid medicine under standard environmental conditions.

5. The intelligent control system of a micro-injection pump for cardiovascular medicine according to claim 4, characterized in that, The viscosity adjustment coefficient calculation unit specifically includes: Error calculation: used to calculate the current viscosity of the liquid medicine and the target viscosity to obtain the difference ; Proportional term calculation: Based on the viscosity error Calculate the proportional term , and its calculation formula is: ; where is the proportional gain coefficient; Integral term calculation: used to accumulate viscosity errors to calculate the integral term , and its calculation formula is: , where is the current time is the integral term of is the integral gain coefficient is the sampling time interval is the integral term at the previous time point; Differential term calculation: used to calculate the viscosity error of the rate of change and calculate the differential term accordingly , and its calculation formula is: ; where is the current time of the differential term, is the differential gain coefficient, is the viscosity error at the previous time point; Viscosity adjustment coefficient calculation: Combine the proportional term , the integral term , and the derivative term to calculate the final viscosity adjustment coefficient . The calculation formula is as follows: .

6. The intelligent control system of a micro-injection pump for cardiovascular medicine according to claim 1, characterized in that, The electromagnetic interference compensation coefficient calculation module includes an electromagnetic field data analysis unit, an interference mode recognition unit, a compensation strategy formulation unit, and a compensation coefficient calculation unit; among them: Electromagnetic field data analysis unit: It is used to receive the electromagnetic field intensity data provided by the environmental monitoring module, analyze the specific impact of the electromagnetic field intensity on the liquid infusion process of the micro-injection pump, and calculate the electromagnetic interference analysis factor according to the following formula: , where is the electromagnetic interference analysis factor, is the electromagnetic interference sensitivity coefficient, is the electromagnetic field intensity in the current environment, is the reference electromagnetic field intensity; Interference mode recognition unit: Based on the analysis result of the electromagnetic field data analysis unit, it identifies the type of electromagnetic interference, and the judgment formula is: ； Among them, is the interference mode category, is the detected interference frequency, is the demarcation frequency between high-frequency and low-frequency interference, and are the recognition thresholds for high-frequency and low-frequency interference respectively; Compensation strategy formulation unit: used to formulate corresponding electromagnetic interference compensation strategies according to the interference types identified by the interference pattern recognition unit; Compensation coefficient calculation unit: calculates the corresponding electromagnetic interference compensation coefficient based on the compensation strategy of the compensation strategy formulation unit.

7. An intelligent control system for a micro-injection pump used in cardiovascular medicine according to claim 6, characterized in that, The compensation strategy formulation unit specifically includes: Compensation Strategy 1: When high-frequency interference is identified, the compensation strategy reduces the operating frequency of the syringe pump , to avoid the interference frequency band; the compensation formula is: , where is the operating frequency of the current pump, is the frequency adjustment amount; Compensation Strategy 2: When identified as low-frequency interference, the compensation strategy reduces the impact of low-frequency electromagnetic waves on the infusion of liquid medicine by adjusting the power filtering ability and electromagnetic isolation degree of the pump; the compensation formula is: , where is the filtered power supply voltage, is the input power supply voltage, is the filtering gain coefficient; Compensation strategy 3: When there is no interference, the compensation strategy keeps the current working mode of the pump unchanged, and there is no need to adjust the frequency or perform power filtering.

8. An intelligent control system for a micro-injection pump used in cardiovascular medicine according to claim 7, characterized in that, The compensation coefficient calculation unit includes: Determine the compensation factor: Determine the corresponding compensation factor according to the received compensation strategy , and its calculation formula is: , where is the compensation factor, is the preset compensation gain coefficient; Calculate the final compensation coefficient: Integrate the compensation coefficients under different interference types to determine the final electromagnetic interference compensation coefficient , and the formula is: ； Among them, is the interference mode category; is the high-frequency interference compensation coefficient; is the low-frequency interference compensation coefficient.

9. An intelligent control system for a micro-injection pump used in cardiovascular medicine according to claim 8, characterized in that, The injection parameter adjustment module includes Injection speed adjustment unit: used to receive the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and calculate the adjusted injection speed according to the following formula: , where is the adjusted injection speed, is the reference injection speed, and are the injection speed adjustment coefficients; Injection pressure adjustment unit: used to adjust according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , calculate the adjusted injection pressure , the formula is: , where is the reference injection pressure, and are the injection pressure adjustment coefficients; Liquid medicine dose adjustment unit: used to calculate the adjusted liquid medicine dose according to the viscosity adjustment coefficient and the electromagnetic interference compensation coefficient , and the formula is: , where is the reference liquid medicine dose, and and are the liquid medicine dose adjustment coefficients.

10. An intelligent control method for a micro-injection pump used in cardiovascular medicine, which is implemented by the intelligent control system for a micro-injection pump used in cardiovascular medicine according to any one of claims 1-9, characterized in that, It includes the following steps: S1: Real-time monitor the temperature data, humidity data and electromagnetic field intensity data in the working environment of the micro-injection pump; S2: Based on the temperature data and humidity data detected in S1, analyze the viscosity change of the liquid medicine and calculate the corresponding viscosity adjustment coefficient; S3: Based on the electromagnetic field intensity data detected in S1, analyze the interference of the electromagnetic field on the liquid medicine infusion process and calculate the corresponding electromagnetic interference compensation coefficient; S4: Based on the viscosity adjustment coefficient and electromagnetic interference compensation coefficient calculated in S2 and S3, automatically adjust the injection speed, injection pressure and liquid medicine dose parameters of the micro-injection pump to compensate for the influence of environmental temperature and humidity and electromagnetic field intensity on the injection accuracy.

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