Automatic liquid distribution control method and system for medical liquid supply

Abstract

The present invention relates to an automatic liquid dispensing control method and system for medical liquid supply, wherein the specific operations of the method include: obtaining the liquid volume of each raw liquid to be proportioned and the liquid taking information of the mixed liquid volume; judging whether the liquid taking information simultaneously satisfies the proportioning conditions that the liquid volume of each raw liquid to be proportioned is respectively higher than its own minimum threshold value and the mixed liquid volume is lower than its own minimum threshold value; if the proportioning conditions are satisfied, setting proportioning instructions; and finally executing proportioning instructions to complete liquid dispensing. Compared with the prior art, the present invention has the following significant advantages: adopting an automatic liquid dispensing control mode, supporting proportioning parameter setting and flow rate timing setting, solving the problem of proportioning error caused by manual operation, and realizing the function of cyclic automatic liquid dispensing control; at the same time, it also satisfies a variety of liquid proportioning operations, expands the application scope of the method, and has high practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical liquid preparation, and in particular to an automatic liquid preparation control method and system for medical liquid supply. Background Art

[0002] In medical production practice, it can be found that mixing liquids as the first step and starting point of the production process is the source of controlling product quality in the entire production process; it is a relatively difficult task to mix different liquids and finally form a balanced, stable and recyclable mixture; relying on traditional manual mixing methods is prone to large ratio errors and poor quality of finished products. With the widespread application of electronic technology, designing an automatic liquid mixing control system with high ratio accuracy and wide application range has become a development trend in medical production.

[0003] Document 1: A Chinese invention patent with authorization announcement number CN112295429B discloses a liquid mixer and a mixing method. Although the metering pump therein also has a liquid proportioning function, its function is to use the arc-shaped structural characteristics of the mixing inlet pipe arranged along the conveying direction to constantly convey an equal amount of liquid into the liquid mixer. There is actually no basis for liquid flow parameters, resulting in a large error in liquid proportioning. At the same time, this method can only support a fixed proportion of two liquids, and has a narrow application range. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic liquid preparation control method and system for medical liquid supply, which can detect liquid collection information in real time, determine and obtain proportioning parameters, support multiple stock liquid proportioning methods, and meet the needs of cyclic automatic liquid preparation control.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An automatic liquid distribution control method for medical liquid supply includes the following steps:

[0007] Obtaining liquid collection information, including the liquid volume of each raw liquid to be mixed and the liquid volume of the current mixed liquid;

[0008] Determine whether the liquid extraction information can meet the matching conditions, the matching conditions include that the liquid volume of each raw liquid to be matched is higher than its own minimum threshold and the liquid volume of the current mixed liquid is lower than its own minimum threshold;

[0009] When the liquid extraction information meets the ratio conditions, a liquid is mixed according to the set ratio instruction. The ratio instruction includes the liquid ratio ratio of the raw liquid to be mixed, the ratio sequence and the ratio time of each raw liquid to be mixed.

[0010] Furthermore, an automatic liquid dispensing control system applied to medical liquid supply includes a liquid collection device and an automatic liquid dispensing control module connected to the liquid collection device, and the liquid collection device and the automatic liquid dispensing control module communicate through a wireless network for data transmission. The liquid collection device includes a raw liquid part and a proportioning part, the raw liquid part is composed of at least two storage spaces, each storage space contains a raw liquid to be proportioned, and the proportioning part contains the mixed liquid after proportioning; the automatic liquid dispensing control module includes a chip control device, a liquid level detection device and a proportioning conveying device: the liquid level detection device is used to detect the liquid collection information of the liquid collection device and send the liquid collection information to the chip control device; the chip control device is used to store the received liquid collection information, generate a proportioning instruction, judge whether the liquid collection information meets the proportioning condition, and when the liquid collection information meets the proportioning condition, control the proportioning conveying device to execute the proportioning instruction to complete one liquid dispensing.

[0011] Furthermore, the specific liquid preparation process includes: opening the liquid level valve corresponding to the storage space where the first-ranked raw liquid to be mixed is located in the matching sequence, and closing the liquid level valve when the delivery time reaches the matching time; opening the liquid level valve corresponding to the storage space where the next-ranked raw liquid to be mixed is located in the matching sequence, and closing the cover liquid level valve when the delivery time reaches the matching time; until the delivery of all the raw liquids to be mixed is completed, the liquid preparation is completed.

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] 1. Automatic liquid mixing control method is adopted to solve the problem of mixing ratio error caused by manual operation and improve the accuracy of mixing ratio;

[0014] 2. Support the setting of ratio parameters and flow rate timing, realize the function of cyclic automatic liquid distribution control, and improve the working efficiency of liquid distribution;

[0015] 3. It can meet the requirements of various liquid proportioning operations, expand the application scope of automatic liquid proportioning control system, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an automatic liquid distribution control system applied to medical liquid supply of the present invention;

[0017] Figure 2 It is a flow chart of an automatic liquid dispensing control method applied to medical liquid supply of the present invention;

[0018] Figure 3 is a schematic diagram of a ratio instruction setting process in an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the proportioning operation flow in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the embodiment of the present invention, liquid preparation refers to mixing and proportioning at least two stock solutions, such as a first stock solution and a second stock solution.

[0022] like Figure 1 As shown, the present invention is an automatic liquid dispensing control system for medical liquid supply, including a liquid collection device and an automatic liquid dispensing control module, and the liquid collection device and the automatic liquid dispensing control module transmit data via Bluetooth wireless communication.

[0023] The liquid collection equipment includes a raw liquid part and a proportioning part; the raw liquid part is composed of at least two storage spaces, each storage space contains a raw liquid to be proportioned; the proportioning part contains the proportioned mixed liquid. The liquid collection equipment is a container used to store liquids, such as a water tank, a bucket, a bottle, etc.

[0024] The automatic liquid dispensing control module includes a chip control device, a liquid level detection device and a proportioning and conveying device. The chip control device is an application installed on a remote server, which is used to store the received liquid collection information, generate proportioning instructions, and determine whether the liquid collection information meets the proportioning conditions. When the liquid collection information meets the proportioning conditions, the proportioning and conveying device is controlled to execute the proportioning instructions to complete a liquid dispensing.

[0025] The liquid level detection devices are respectively arranged on the raw liquid part and the proportioning part, and are used to detect the liquid taking information and send it to the chip control device for data storage. The detected liquid taking information includes the liquid volume of each raw liquid to be proportioned and the current mixed liquid volume.

[0026] The proportioning and conveying device is connected to the liquid level detection device. The proportioning and conveying device includes a water pump and a conveying pipe corresponding to each raw liquid to be proportioned. The liquid inlet of each water pump is connected to the raw liquid part through the conveying pipe, and the liquid outlet of each water pump is connected to the proportioning part through the conveying pipe; each water pump is also equipped with a liquid level valve for controlling the water pump switch.

[0027] According to the above content, if Figure 2 As shown, the present invention also provides an automatic liquid distribution control method for medical liquid supply, comprising the following steps:

[0028] Step S02: obtaining liquid collection information;

[0029] Specifically, the obtained liquid extraction information includes the values ​​of the first stock liquid volume, the second stock liquid volume and the current mixed liquid volume.

[0030] Step S04: setting a ratio instruction;

[0031] Specifically, before setting the ratio instruction, it is necessary to determine whether the liquid extraction information meets the ratio condition. If "yes", the ratio instruction setting is completed and the process proceeds to step S06. If "no", the process returns to step S02.

[0032] like Figure 3 As shown, in steps S040-S041, when the proportioning conditions are satisfied at the same time that the first stock solution amount and the second stock solution amount are respectively higher than their own minimum thresholds and the current mixed liquid amount is lower than its own minimum threshold, step S042 is entered; the mixed liquid amount of the proportioning part is the preparatory mixed liquid amount of the first stock solution and the second stock solution, and the specific calculation formula is:

[0033] M i =(Q max -Q)*P i

[0034] Where M i It indicates the amount of liquid required for the i-th stock solution to be mixed, Q max represents the highest threshold of the mixed liquid, Q represents the current volume of the mixed liquid, P i It indicates the proportion of the i-th stock solution to be mixed in the mixed solution.

[0035] In steps S043 to S044, the ratio instruction includes setting parameters such as the ratio of the first stock solution to the second stock solution, the ratio order, and the ratio time; obtaining the amount of the prepared mixed solution, and determining the amount of the i-th stock solution according to the set ratio of the first stock solution to the second stock solution. The specific calculation formula is as follows:

[0036] T i =(M i ×V i ) / 60

[0037] Where: T i M represents the delivery time of the i-th raw liquid to be mixed, i V represents the amount of liquid required for the i-th stock solution to be mixed. i represents the average flow rate of the i-th stock solution to be mixed;

[0038] V i =Q i / S=Q i / (πd 2 / 4)=4Q i / (πd 2 )

[0039] Where: V i represents the average flow rate of the i-th stock solution to be mixed (m / s), Q i Indicates the flow rate of the i-th raw liquid to be mixed (m 3 / s), S represents the cross-sectional area of ​​the delivery pipe (㎡), π represents the circumference, and d represents the inner diameter of the delivery pipe (m).

[0040] The principle is to distinguish and obtain the proportioning parameters of the raw liquid to be proportioned by different characteristics of the liquid. When the flow rate of the i-th raw liquid to be proportioned and the cross-sectional area of ​​the delivery pipe are determined, the delivery time of the i-th raw liquid to be proportioned is obtained by calculating the average flow rate of the i-th raw liquid to be proportioned.

[0041] Step S06: Complete automatic liquid preparation according to the proportioning instruction.

[0042] like Figure 4 As shown in the figure, when the first stock solution is selected for priority delivery, the specific proportioning process is:

[0043] In step S061, the liquid level valve of the first stock solution is opened and the first stock solution is delivered for a time period of T1;

[0044] In step S062, after the delivery of T1 is completed, the liquid level valve of the first stock solution is closed and the liquid level valve of the second stock solution is opened, and the delivery time of the second stock solution is T2;

[0045] In step S063, after T2 delivery is completed, the proportioning is completed.

[0046] Specifically, the above-mentioned proportioning process can also be completed by selecting to preferentially deliver the second stock solution.

Claims

1. An automatic liquid distribution control method for medical liquid supply, characterized in that: The automatic liquid dispensing control method is implemented based on an automatic liquid dispensing control system, wherein: The automatic liquid dispensing control system comprises a liquid dispensing device and an automatic liquid dispensing control module connected to the liquid dispensing device: The liquid extraction device comprises a raw liquid part and a proportioning part, wherein the raw liquid part is composed of at least two storage spaces, each storage space contains a raw liquid to be proportioned, and the proportioning part contains the proportioned mixed liquid; The automatic liquid distribution control module includes a chip control device, a liquid level detection device and a proportioning and conveying device: The liquid level detection device is used to detect the liquid taking information of the liquid taking device and send the liquid taking information to the chip control device; The chip control device is used to store the received liquid taking information, generate a proportioning instruction, determine whether the liquid taking information meets the proportioning condition, and when the liquid taking information meets the proportioning condition, control the proportioning and conveying device to execute the proportioning instruction to complete one liquid preparation; The automatic liquid dispensing control method comprises the following steps: Obtaining liquid collection information, wherein the liquid collection information includes the liquid volume of each raw liquid to be mixed and the liquid volume of the current mixed liquid; Determine whether the liquid extraction information satisfies a matching condition, wherein the matching condition includes that the liquid volume of each of the raw liquids to be matched is higher than its own minimum threshold and the liquid volume of the current mixed liquid is lower than its own minimum threshold; When the liquid extraction information meets the ratio condition, a liquid is prepared according to the set ratio instruction, wherein the ratio instruction includes the liquid ratio of the raw liquid to be prepared, the ratio order and the ratio time of each raw liquid to be prepared; The mixing time of each stock solution to be mixed is the delivery time of the stock solution to be mixed, and the calculation formula is T i =(M i ×V i ) / 60, where: T i M represents the delivery time of the i-th raw liquid to be mixed, i V represents the amount of liquid required for the i-th stock solution to be mixed. i represents the average flow rate of the i-th stock solution to be mixed; The calculation formula for the amount of liquid required for the i-th item of the original liquid to be mixed is: M i =(Q max -Q)*P i , where Q max represents the highest threshold of the mixed liquid, Q represents the current volume of the mixed liquid, P i It indicates the proportion of the i-th stock solution to be mixed in the mixed solution.

2. The automatic liquid distribution control method for medical liquid supply according to claim 1, characterized in that: The liquid extraction information includes the liquid volume of each raw liquid to be mixed and the liquid volume of the current mixed liquid.

3. The automatic liquid distribution control method for medical liquid supply according to claim 2 is characterized in that: The proportioning and conveying device includes a plurality of water pumps corresponding one to one with the storage space of the raw liquid part, the liquid inlet of each water pump is connected to the storage space corresponding to the raw liquid part, and the liquid outlet of each water pump is connected to the proportioning part.

4. The automatic liquid dispensing control method for medical liquid supply according to claim 3, characterized in that: Each of the water pumps is also respectively equipped with a liquid level valve for controlling the switch of the water pump.

5. The automatic liquid distribution control method for medical liquid supply according to claim 4, characterized in that: The liquid preparation process comprises the following steps: Open the liquid level valve corresponding to the storage space where the first-ranked raw liquid to be proportioned in the proportioning sequence is located, and close the liquid level valve when the delivery time reaches the proportioning time; open the liquid level valve corresponding to the storage space where the next-ranked raw liquid to be proportioned is located in the proportioning sequence, and close the cover liquid level valve when the delivery time reaches the proportioning time; until the delivery of all the raw liquids to be proportioned is completed and the liquid preparation is completed.

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