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CN-121971748-A - Blood transfusion bag heating equipment and uniform heating method for blood transfusion department

CN121971748ACN 121971748 ACN121971748 ACN 121971748ACN-121971748-A

Abstract

The application provides blood transfusion bag heating equipment and a uniform heating method for a blood transfusion department, which are characterized in that the temperature value of a blood transfusion bag at a non-collinear preset monitoring point in a heating cavity is obtained; the method comprises the steps of constructing a two-dimensional temperature field of a blood transfusion bag on a heating cavity contact surface according to temperature values of monitoring points and spatial distribution relations of the two-dimensional temperature field, identifying uniformity indexes of blood transfusion bag temperature distribution and balance coefficients of heat balance trends between an active heating area and a passive heat transfer area according to the two-dimensional temperature field, adjusting output power of the heating units to the monitoring points of the active heating area and power proportions among the heating units according to the uniformity indexes and the balance coefficients so as to drive the two-dimensional temperature field to converge towards a preset uniform target temperature field, and performing constant-temperature feedback adjustment on the blood transfusion bag based on the monitoring points of the passive heat transfer area after the two-dimensional temperature field converges to the uniform target temperature field. According to the technical scheme provided by the application, the uniform heating of the blood transfusion bag by the heating equipment can be realized under the heterogeneity of the heat conduction space.

Inventors

  • WEI LI

Assignees

  • 宜宾市第二人民医院

Dates

Publication Date
20260505
Application Date
20260112

Claims (10)

  1. 1. A method for uniformly heating a blood transfusion bag heating apparatus for a blood transfusion department, comprising the steps of: acquiring a temperature value of a blood transfusion bag at a non-collinear preset monitoring point in a heating cavity, wherein the preset monitoring point comprises an active heating area monitoring point directly corresponding to a heating unit and a passive heat transfer area monitoring point far away from the heating unit; Constructing a two-dimensional temperature field of the blood transfusion bag on the contact surface of the heating cavity according to the temperature values of all monitoring points and the spatial distribution relation of the temperature values, and identifying a uniformity index of blood transfusion bag temperature distribution and a balance coefficient of a heat balance trend between an active heating area and a passive heat transfer area according to the two-dimensional temperature field; The output power of the heating units to the monitoring points of the active heating areas and the power ratio among the heating units are adjusted through the uniformity index and the balance coefficient so as to drive the two-dimensional temperature field to converge towards a preset uniform target temperature field; and after the two-dimensional temperature field is converged to the uniform target temperature field, carrying out constant-temperature feedback adjustment on the blood transfusion bag based on the passive heat transfer area monitoring points.
  2. 2. The method of claim 1, wherein constructing a two-dimensional temperature field of the blood transfusion bag on the contact surface of the warming cavity according to the temperature value of each monitoring point and the spatial distribution relation thereof comprises the following steps: based on the geometric parameters of the contact surface of the heating cavity, corresponding two-dimensional coordinates are distributed for each non-collinear preset monitoring point; Calculating an estimated temperature value of an area where the monitoring points are not arranged on the contact surface of the heating cavity based on the two-dimensional coordinates of each monitoring point and the corresponding temperature value; and (3) carrying out grid mapping on the temperature value of each monitoring point and the estimated temperature value of the area where the monitoring point is not arranged according to the two-dimensional coordinates of the temperature value, and generating a two-dimensional temperature field of the blood transfusion bag on the contact surface of the heating cavity.
  3. 3. The method of claim 1, wherein identifying the uniformity index of the blood transfusion bag temperature distribution and the balance coefficient of the heat balance trend between the active heating area and the passive heat transfer area according to the two-dimensional temperature field comprises: Extracting temperature values of all grid points of the contact surface of the heating cavity from the two-dimensional temperature field, and dividing to obtain a grid point temperature set corresponding to the active heating area and a grid point temperature set corresponding to the passive heat transfer area; Calculating a temperature average value and a temperature standard deviation according to the temperature values of all grid points, and further determining uniformity indexes of blood transfusion bag temperature distribution through the temperature standard deviation and the temperature average value; respectively carrying out arithmetic average on a grid point temperature set corresponding to the active heating zone and a grid point temperature set corresponding to the passive heat transfer zone to obtain an average temperature of the active heating zone and an average temperature of the passive heat transfer zone; And calculating to obtain the balance coefficient of the heat balance trend between the active heating area and the passive heat transfer area by combining the preset target temperature based on the difference value of the average temperature of the active heating area and the average temperature of the passive heat transfer area.
  4. 4. The method of claim 1, wherein adjusting the output power of the heating unit to the active heating zone monitoring point and the power ratio between the heating units by the uniformity index and the balance coefficient to drive the two-dimensional temperature field to converge toward a preset uniform target temperature field specifically comprises: Comparing the uniformity index with a preset uniformity threshold value to generate a power regulation signal for representing the deviation degree of temperature distribution; Calculating the power reduction amount of a heating unit corresponding to an active heating zone monitoring point with the highest current temperature according to the power regulation signal; based on the balance coefficient, the power reduction amount is mapped into the power compensation amount of the heating unit corresponding to the monitoring point of the passive heat transfer area with the lowest temperature in proportion, and a power redistribution instruction is generated; And responding to the power redistribution instruction, executing the power reduction amount and the power compensation amount to form a new heating unit power ratio until the two-dimensional temperature field meets the convergence condition of a preset uniform target temperature field.
  5. 5. The method of claim 1, wherein after the two-dimensional temperature field converges to a uniform target temperature field, performing constant temperature feedback adjustment of the blood transfusion bag based on the passive heat transfer zone monitoring point specifically comprises: after confirming that the two-dimensional temperature field meets a preset convergence condition, keeping the current power ratio of each heating unit unchanged; collecting real-time temperature data of blood transfusion bags through the passive heat transfer area monitoring points and the active heating area monitoring points; Comparing the acquired real-time temperature data of the passive heat transfer zone monitoring points with the real-time temperature data of the nearest active heating zone monitoring points to obtain a temperature deviation value; when the temperature deviation value is lower than a preset temperature deviation threshold value, calculating the power adjustment increment of each heating unit by adopting a proportional-integral-derivative control algorithm based on the temperature deviation value; And according to the maintained current power proportion, the power adjustment increment is added to the current output power of each heating unit to execute power adjustment and feed back the adjustment result.
  6. 6. The method of claim 1, wherein the temperature value of the blood transfusion bag at the non-collinear preset monitoring point in the warming chamber is obtained by a temperature sensor.
  7. 7. The method of claim 6, wherein the temperature sensor is a micro-patch thermocouple sensor.
  8. 8. A blood transfusion bag heating apparatus for blood transfusion department, the blood transfusion bag heating apparatus for blood transfusion department comprising a uniform heating unit, characterized in that the uniform heating unit comprises: The acquisition module is used for acquiring the temperature value of the blood transfusion bag at a non-collinear preset monitoring point in the heating cavity, wherein the preset monitoring point comprises an active heating area monitoring point directly corresponding to the heating unit and a passive heat transfer area monitoring point far away from the heating unit; The processing module is used for constructing a two-dimensional temperature field of the blood transfusion bag on the contact surface of the heating cavity according to the temperature value of each monitoring point and the spatial distribution relation of the temperature value, and identifying a uniformity index of the blood transfusion bag temperature distribution and a balance coefficient of a heat balance trend between the active heating area and the passive heat transfer area according to the two-dimensional temperature field; The processing module is further used for adjusting the output power of the heating unit to the monitoring point of the active heating area and the power ratio among the heating units through the uniformity index and the balance coefficient so as to drive the two-dimensional temperature field to converge towards a preset uniform target temperature field; And the execution module is used for carrying out constant-temperature feedback adjustment on the blood transfusion bag based on the passive heat transfer area monitoring point after the two-dimensional temperature field converges to the uniform target temperature field.
  9. 9. A computer device comprising a memory storing code and a processor configured to obtain the code and to perform the method of uniform warming of a transfusion bag warming device for a transfusion department according to any one of claims 1 to 7.
  10. 10. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements a uniform warming method for a blood transfusion bag warming apparatus of a blood transfusion department as claimed in any one of claims 1 to 7.

Description

Blood transfusion bag heating equipment and uniform heating method for blood transfusion department Technical Field The application relates to the technical field of heating control, in particular to blood transfusion bag heating equipment and a uniform heating method for blood transfusion department. Background The heating control is widely applied in the fields of industrial production, biological medicine, intelligent home and new energy equipment, the performance of the heating control directly determines the running stability, the product quality and the energy utilization efficiency of a system, the traditional heating control adopts a PID algorithm, depends on manual parameter setting, has the problems of response lag and low temperature control precision, is difficult to adapt to complex working conditions of multivariable coupling and nonlinearity, and is advanced along with intelligent manufacturing, energy-saving and environment-friendly requirement upgrading, and the permeation of a sensor, an Internet of things and an artificial intelligent technology, and the heating control is forward accurate, intelligent and self-adaptive development. In the existing warming control, especially in the warming control of biological medicine, the core goal of the warming control is to realize an accurate, uniform and stable temperature environment, the warming control is based on a closed loop feedback system, namely, a temperature sensor monitors the temperature in a target bioreactor in real time and transmits signals to a controller, the controller (usually adopts PID algorithm) compares and calculates measured values with set values to obtain warming adjustment signals, a warming adjustment signal controls an executing mechanism to carry out warming control, however, in the uniform warming of a blood transfusion bag warming device in a blood transfusion department, when the output heat of a warming unit in a warming cavity is transmitted in the cavity, due to the difference of the contact tightness between blood transfusion bags and the cavity, a thermal gradient is formed between an active heating area (direct heating area) and a passive heat transfer area (depending on a heat diffusion area), the blood serves as non-Newtonian fluid, the internal convection and the heat capacity characteristics of the non-stability of the temperature field are further aggravated, so that the active heating area is easy to overheat and the passive heat transfer area warming lag, the warming device of the blood transfusion bag is uneven in temperature distribution due to the heterogeneous heating of a heat conduction space, and therefore, how the warming device in the blood transfusion industry is uniform is realized under the condition of the heat conduction space. Disclosure of Invention The application provides blood transfusion bag heating equipment and a uniform heating method for a blood transfusion department, which can realize uniform heating of the blood transfusion bag by the heating equipment under the heterogeneity of a heat conduction space. In a first aspect, the present application provides a method for uniform warming of a blood transfusion bag warming apparatus for blood transfusion department, comprising the steps of: acquiring a temperature value of a blood transfusion bag at a non-collinear preset monitoring point in a heating cavity, wherein the preset monitoring point comprises an active heating area monitoring point directly corresponding to a heating unit and a passive heat transfer area monitoring point far away from the heating unit; Constructing a two-dimensional temperature field of the blood transfusion bag on the contact surface of the heating cavity according to the temperature values of all monitoring points and the spatial distribution relation of the temperature values, and identifying a uniformity index of blood transfusion bag temperature distribution and a balance coefficient of a heat balance trend between an active heating area and a passive heat transfer area according to the two-dimensional temperature field; The output power of the heating units to the monitoring points of the active heating areas and the power ratio among the heating units are adjusted through the uniformity index and the balance coefficient so as to drive the two-dimensional temperature field to converge towards a preset uniform target temperature field; and after the two-dimensional temperature field is converged to the uniform target temperature field, carrying out constant-temperature feedback adjustment on the blood transfusion bag based on the passive heat transfer area monitoring points. In some embodiments, constructing a two-dimensional temperature field of the blood transfusion bag on the contact surface of the heating cavity according to the temperature value of each monitoring point and the spatial distribution relation thereof specifically comprises: based on the geometric parameters of the contact su