CN116549773A - Bubble detection method and device for infusion pipeline, injection device and storage medium - Google Patents
Bubble detection method and device for infusion pipeline, injection device and storage medium Download PDFInfo
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- CN116549773A CN116549773A CN202210102474.1A CN202210102474A CN116549773A CN 116549773 A CN116549773 A CN 116549773A CN 202210102474 A CN202210102474 A CN 202210102474A CN 116549773 A CN116549773 A CN 116549773A
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- 238000001802 infusion Methods 0.000 title claims abstract description 123
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000002347 injection Methods 0.000 title claims abstract description 13
- 239000007924 injection Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 71
- 230000015654 memory Effects 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 25
- 238000004590 computer program Methods 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims 3
- 239000000523 sample Substances 0.000 claims 1
- 238000004364 calculation method Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 210000001147 pulmonary artery Anatomy 0.000 description 2
- 206010001526 Air embolism Diseases 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- 210000005241 right ventricle Anatomy 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 229940043263 traditional drug Drugs 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
Abstract
The application discloses a bubble detection method and device for an infusion pipeline, an injection device and a storage medium. The device is provided with a transmitter and a receiver along two radial sides of the infusion pipeline respectively, wherein the transmitter is used for transmitting sensing signals, and the receiver is used for collecting the sensing signals, and the method comprises the following steps: acquiring an electric signal obtained by signal acquisition of a receiver; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration. Through the mode, the bubble volume calculation method is based on fewer detection devices, and can calculate the bubble volume more simply, conveniently and rapidly.
Description
Technical Field
The present invention relates to the field of medical devices, and in particular, to a method and an apparatus for detecting bubbles in an infusion line, an injection device, and a storage medium.
Background
"infusion" is a very common treatment in the Chinese medical care industry. Infusion can be faster than traditional drug therapy
Cure the illness. In the process of infusion, the amount of air entering the human body from the infusion pipeline is controlled, and if a large amount of air enters the human body during infusion and is relatively rapid, air embolism can occur. Air enters the heart along with blood circulation, and after the heart beats, the air and blood in the heart cavity are stirred, so that a large amount of foam is formed, and the foam corresponds to emboli. When the right ventricle contracts, pushing these emboli to the branches of the pulmonary artery causes pulmonary artery obstruction, causing respiratory circulatory disturbance, which can be fatal in severe cases. Therefore, before the transfusion starts, the air in the transfusion tube is exhausted by the liquid medicine, and in the transfusion process, the needle is usually pulled out before the medicine is completely dropped, so that the air is prevented from entering the blood vessel.
In view of this, a number of methods and devices for detecting the volume of air bubbles in an infusion line have been proposed in the field of medical devices. In some methods, a plurality of groups of detection devices are used for forming a detection array for detecting the length of the bubble, and part of the detection devices are used for counting the number of detection periods of the detected bubble, and the volume of the bubble is calculated according to the number of periods. The method has certain defects in the calculation of the volume of the air bubble, and the calculated volume value of the air bubble is rough.
Disclosure of Invention
The technical problem that this application mainly solves is to provide a bubble detection method of infusion pipeline, based on this method can utilize less detection device more simple and convenient, quick calculation bubble volume.
In order to solve the technical problems, the application adopts a technical scheme that: the method is based on the fact that a transmitter and a receiver are respectively arranged on two sides of the infusion pipeline in the radial direction, the transmitter is used for transmitting sensing signals, and the receiver is used for collecting the sensing signals; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration.
Further, determining the volume of bubbles in the infusion line according to the duration time, including determining a pipe diameter parameter of the infusion line and determining a liquid flow rate of the infusion line; and determining the first volume of the bubbles in the infusion pipeline according to the pipe diameter parameter, the liquid flow rate and the duration.
Further, determining a first volume of air bubbles in the infusion line based on the pipe diameter parameter, the liquid flow rate, and the duration, including determining a cross-sectional area of the infusion line based on the pipe diameter parameter; determining the length of bubbles in the infusion line according to the liquid flow rate and the duration; a first volume of the bubble in the infusion line is determined based on the cross-sectional area and the length of the bubble.
Further, the method specifically includes calculating a first volume of air bubbles in the infusion line using the formula:
wherein V is 1 For the first volume, d is the diameter of the infusion line, s is the liquid flow rate of the infusion line, and t is the duration of the preset level.
Further, the method includes obtaining a pressure value in the infusion line; the first volume is corrected based on the pressure value to obtain a second volume.
Further, correcting the first volume according to the pressure value to obtain a second volume, including determining a correction factor according to the pressure value and the standard atmospheric pressure value; the first volume is corrected using the correction coefficient to obtain a second volume.
Further, the method specifically includes calculating a second volume of air bubbles in the infusion line using the formula:
wherein V is 1 For a first volume, V 2 A second volume, P is the pressure value in the infusion pipeline, P 0 Is the standard atmospheric pressure value.
In order to solve the above problems, another technical scheme adopted in the application is as follows: the bubble detection device comprises a transmitter, a detection unit and a control unit, wherein the transmitter is used for transmitting a sensing signal; the receiver is used for collecting the sensing signals, and the transmitter and the receiver are respectively arranged along the two radial sides of the infusion pipeline; and the processor is connected with the receiver and is used for executing the method so as to determine the volume of the air bubble in the infusion pipeline.
In order to solve the above problems, another technical scheme adopted in the application is as follows: there is provided an injection device comprising a processor and a memory coupled to the processor, the memory having stored therein a computer program for executing the computer program to carry out the method as described above.
In order to solve the above problems, another technical scheme adopted in the application is as follows: there is provided a computer readable storage medium having stored therein a computer program for implementing the above method when executed by a processor.
The beneficial effects of this application are: different from the situation of the prior art, the application provides a bubble detection method of an infusion pipeline, wherein a transmitter and a receiver are respectively arranged at two radial sides of the infusion pipeline, the transmitter is used for transmitting a sensing signal, and the receiver is used for collecting the sensing signal; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration. By the method, the volume of the air bubble in the infusion pipeline can be simply, conveniently and quickly calculated by using fewer detection devices.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic flow chart of an embodiment of a method for detecting bubbles;
FIG. 2 is a flow chart of an embodiment of a bubble first volume determination method provided herein;
FIG. 3 is a flow chart of another embodiment of the bubble first volume determination method provided herein;
FIG. 4 is a flow chart of an embodiment of a method for determining a second volume of bubbles provided herein;
FIG. 5 is a schematic flow chart diagram of another embodiment of a method for determining a second volume of bubbles provided herein;
FIG. 6 is a schematic structural diagram of an embodiment of a bubble detection device provided in the present application;
FIG. 7 is a schematic view of another embodiment of a bubble detection device provided herein;
FIG. 8 is a schematic view of an embodiment of an injection device according to the present application;
fig. 9 is a schematic structural diagram of an embodiment of a computer readable storage medium provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all, of the methods and processes related to the present application are shown in the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
In addition, although the terms "first," "second," etc. may be used herein to describe various elements (or various thresholds or various applications or various instructions or various operations), etc., these elements (or thresholds or applications or instructions or operations) should not be limited by these terms. These terms are only used to distinguish one element (or threshold or application or instruction or operation) from another element (or threshold or application or instruction or operation). For example, a first volume may be referred to as a second volume, and a second volume may also be referred to as a first volume, without departing from the scope of the present application, both being bubble volumes, except that both are not the same bubble volume.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the process of treating a patient by using the infusion device clinically, bubbles in an infusion pipeline must be accurately and effectively detected so as to ensure the life safety of the patient. There are generally two types of bubble detection methods in the prior art: one is to collect whether there is bubble in the infusion line through the pressure sensing device, the detection accuracy of this way is not high, and will cause the oppression to the infusion line, will cause the influence to the infusion process; in addition, the ultrasonic sensing device is used for continuously detecting whether bubbles exist in the infusion pipeline, however, the continuous detection and continuous data analysis are large in pressure of the system, and the detection precision cannot be guaranteed. Based on the above problems, the present application proposes a bubble detection method based on an ultrasonic detection device.
Referring to fig. 1, fig. 1 is a flow chart of an embodiment of a bubble detection method provided in the present application. The method is based on the following means: and the two sides along the radial direction of the infusion pipeline are respectively provided with a transmitter and a receiver, the transmitter is used for transmitting sensing signals, and the receiver is used for collecting the sensing signals. The embodiment specifically includes steps 11 to 13:
step 11: and acquiring an electric signal acquired by the receiver.
The propagation phenomenon of mechanical vibrations of an object in a medium having particles and elasticity is called wave motion, and the wave motion causing the acoustic sensation of the auditory organs of the human ear is called acoustic wave. The vibration frequency of the hearing threshold range of the human ear is 20HZ-20KHZ. Sound waves above the upper threshold of the human ear, while sound waves above 20KHZ are called ultrasound waves.
The detection principle of the ultrasonic bubble detection device is that whether the propagation energy of ultrasonic waves has large loss in the transmission process or not is utilized, and if the propagation energy has large loss, the bubble is detected. When the ultrasonic waves are transmitted in the same medium, the energy is almost not attenuated because the medium acoustic impedance is the same in the same medium; in different media, the difference in acoustic impedance can result in energy loss due to reflection of ultrasonic waves at different media surfaces. Therefore, when there is no bubble in the infusion line, the energy of the ultrasonic wave is not attenuated basically, and if there is a bubble in the infusion line, the reflection coefficient of the ultrasonic wave is large because the acoustic impedance of the liquid and the gas is large, and serious attenuation occurs. When in use, the transmitter and the receiver are respectively arranged on the two sides of the infusion tube, the transmitter is used for transmitting the sensing signal, and the receiver is used for collecting the sensing signal, and the functions of the transmitter and the receiver are reciprocal. When the ultrasonic bubble detection device is used for bubble detection, the processor needs to acquire an electric signal after the conversion of the ultrasonic signal acquired by the receiver, and judges whether bubbles exist in the infusion pipeline according to the electric signal.
Alternatively, the types of the electric signals may be a high-level and low-level signal, a data value signal representing the radius of the bubble, or an accumulated value signal of a digital signal, or the like.
Step 12: the duration of the preset level in the electrical signal is determined.
Specifically, a processor is used to generate a pulse with a fixed frequency, and a driving circuit is used to drive a transmitter of the ultrasonic bubble detection device to transmit ultrasonic waves with the same frequency. After the charging is finished, the voltage values at the two ends of the charging circuit are read by the processor, if the voltage value is higher than a certain set threshold value, the output signal is made to be a high-level signal, namely the ultrasonic energy is considered to be unattenuated, and no bubble in the current infusion pipeline passes through; if the output signal is a low level signal, the ultrasonic energy is considered to be attenuated, and bubbles pass through the current infusion pipeline.
Specifically, it may be set that a high level signal is received when there is a bubble in the infusion line passing therethrough, and a low level signal is received when there is no bubble in the infusion line passing therethrough.
Accordingly, the time of bubble passing can be determined according to the duration of the preset level in the electrical signal, in this application, the level signal detected when no bubble passes is taken as a high level signal, and the level signal detected when a bubble passes is taken as a low level signal as an example.
Step 13: the volume of the air bubble in the infusion line is determined based on the duration.
And according to the duration of the low-level signal, combining the flow speed of the bubbles to obtain the length of the bubbles. Typically, the bubble in the infusion line can be assumed to be a cylinder for calculation. Therefore, the volume of the air bubble can be obtained according to the length of the air bubble and related parameters in the infusion pipeline.
In the above embodiment, a method for detecting bubbles in an infusion line is provided, where the method is based on the following device, i.e. a transmitter and a receiver are respectively arranged along two radial sides of the infusion line, the transmitter is used for transmitting a sensing signal, and the receiver is used for collecting the sensing signal, and the method specifically includes obtaining an electrical signal obtained by signal collection by the receiver; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration. By the method, the length of the air bubble is determined by using the detected preset level signal, and the air bubble is assumed to be a cylinder, so that the volume of the air bubble can be simply and rapidly determined. Meanwhile, the method is based on a pair of transmitters and receivers of the ultrasonic detection device, and the equipment is simpler.
In order to determine the volume of a bubble in an infusion line, the present application proposes a first bubble volume determination method.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of a bubble first volume determination method provided in the present application. The present embodiment specifically includes steps 131 to 132:
step 131: and determining the pipe diameter parameter of the infusion hanging pipeline and determining the flow rate of liquid in the infusion pipeline.
According to 51.104 items in "GB 9706.27-2005 medical electrical equipment+parts 2-24+infusion pump and infusion processor safety special requirements": 1mL of air over 15 minutes is not considered a safety hazard. Each air bubble less than 50uL does not count in the sum of lml. Thus, when the bubbles are too small, for example, air bubbles less than 50uL are negligible, bubbles greater than 50uL can be used for detection. The bubble can be regarded as a cylinder moving in the moving process, so that the volume of the bubble can be calculated according to a cylinder volume formula. The length of the bubble is determined by the first embodiment, and the first volume of the air bubble can be calculated by determining the length of the bubble according to the length of the liquid flow rate and the preset level and determining the inner diameter parameter of the infusion pipeline on the assumption that the flow speed of the bubble is consistent with the liquid flow rate.
Step 132: and determining the first volume of the bubbles in the infusion pipeline according to the pipe diameter parameter, the liquid flow rate and the duration.
The length of the bubbles in the infusion pipeline can be determined by using the flow rate and the duration of the liquid, and then the inner diameter of the pipeline is determined according to the pipe diameter parameter in the infusion pipeline, so that the first volume of the bubbles in the infusion pipeline can be obtained.
The specific calculation of bubbles in the infusion line is shown in fig. 3.
Referring to fig. 3, fig. 3 is a schematic flow chart of another embodiment of the bubble first volume determination method provided in the present application. The present embodiment specifically includes steps 1321 to 1322:
step 1321: determining the cross-sectional area of the infusion pipeline according to the pipe diameter parameter; and determining the length of the bubble in the infusion line based on the liquid flow rate and duration.
According to the pipe diameter parameters, the cross-sectional area of the infusion pipeline can be obtained by using a cross-sectional area calculation formula. The length of the bubble in the infusion line is obtained by the product of the flow rate and the duration of the liquid.
Step 1322: a first volume of the bubble in the infusion line is determined based on the cross-sectional area and the length of the bubble.
And obtaining the first volume of the air bubble in the infusion pipeline by using the product of the cross-sectional area and the length of the air bubble. The volume is a first volume calculated at the pressure inside the infusion line.
According to the above embodiment, the first volume of the bubble can be calculated specifically by the following formula:
wherein V is 1 For the first volume, d is the diameter of the infusion line, s is the liquid flow rate of the infusion line, and t is the duration of the preset level.
The variables used in the above formula are all very readily available variables, so that the first volume of the bubble can be determined simply and quickly from the above formula.
The above-described calculation process of the air bubbles is based on the air bubbles in the liquid pressure of the infusion line, the air bubble volume in the liquid pressure being different from the air bubble volume at the standard atmospheric pressure, and therefore, in order to normalize the calculated air bubble volume, the air bubble volume in the liquid pressure may be converted to the standard gas volume of the air bubbles at the standard atmospheric pressure. Based on the theory, the application provides a second volume calculating method of bubbles.
Referring to fig. 4, fig. 4 is a schematic flow chart of an embodiment of a method for determining a second volume of bubbles provided in the present application. The present embodiment specifically includes steps 133 to 134:
step 133: and obtaining the pressure value in the infusion pipeline.
Firstly, a pressure detection device is used for detecting the pressure value of liquid in the infusion pipeline, and the volume of bubbles under standard atmospheric pressure can be obtained according to the pressure value.
Step 134: the first volume is corrected based on the pressure value to obtain a second volume.
The standard atmospheric pressure is known, and from the standard atmospheric pressure and the detected pressure value, a corresponding conversion relation can be obtained, and a second volume corresponding to the first volume of the bubble can be obtained by using the conversion relation.
Specifically, referring to fig. 5, fig. 5 is a schematic flow chart of another embodiment of the method for determining the second volume of the air bubble provided in the present application. The present embodiment specifically includes steps 1341 to 1342:
step 1341: and determining a correction coefficient according to the pressure value and the standard atmospheric pressure value.
Step 1342: the first volume is corrected using the correction coefficient to obtain a second volume.
According to an ideal gas state equation pv=nrt, wherein P is pressure in pa; v is the volume of the gas, and the unit is m 3 The method comprises the steps of carrying out a first treatment on the surface of the T is temperature, and the unit is K; n is the amount of the substance of the gas in mol; r is the molar gas constant (also known as the universal gas constant) in J/mol.K. Since n, R, T are all equal in the same system, at normal atmospheric pressure P 0 The following correspondence exists between the second volume and the first volume of the bubble:
wherein V is 1 For a first volume, V 2 A second volume, P is the pressure value in the infusion pipeline, P 0 Is the standard atmospheric pressure value. The absolute pressure is equal to the gauge pressure (the pressure detected by the pressure sensor) plus a standard atmospheric pressure, because the pressure gauge cannot measure the pressure value at a standard brick atmospheric pressure. Therefore, the absolute pressure value in the infusion line is calculated by adding a standard atmospheric pressure value to the detected pressure value.
Through the formula, the first volume of the air bubble in the infusion pipeline is converted into a second volume under the corresponding standard atmospheric pressure. By utilizing the second volume of the air bubble, medical staff can more accurately judge the influence of the real volume of the air bubble on the human body.
Based on the technical problem, the application also provides a bubble detection device of the infusion pipeline.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of a bubble detection device provided in the present application.
The bubble detection device 100 includes a transmitter 110, a receiver 120, and a processor 130.
Wherein the transmitter 110 and the receiver 120 are located on diametrically opposite sides of the infusion line and the transmitter 110 and the receiver 120 are functionally interchangeable. A housing is disposed outside the transmitter 110 and the receiver 120 for fixing the transmitter 110 and the receiver 120. The processor 130 is respectively connected with the transmitter 110 and the receiver 120, the processor 130 controls the transmitter 110 to transmit ultrasonic signals, the ultrasonic signals are used for detecting whether bubbles pass through the infusion pipeline, the receiver 120 is used for receiving the ultrasonic signals and inputting the received ultrasonic signals into the processor 130, the processor 130 converts the ultrasonic signals into electric signals according to a signal conversion circuit and the like, the converted electric signal values are compared with a preset threshold value, if the electric signal values are higher than the preset threshold value, the output signals are set to be high-level signals, the ultrasonic signals are not lost, and no bubbles pass through the infusion pipeline at the moment by default; if the value of the electric signal is lower than the preset threshold value, the output signal is set to be a low-level signal, which indicates that the ultrasonic signal has great loss, and the infusion pipeline is default to have bubbles passing through at the moment.
Referring to fig. 7, fig. 7 is a schematic structural diagram of another embodiment of a bubble detecting device provided in the present application.
The bubble detection device 100 further includes a pressure sensor 140. Wherein the pressure sensor is disposed in the infusion line and is connected to the processor 130 for detecting a pressure value in the infusion line.
The length of the detected bubble may be determined based on the duration of the low level signal output by the processor 130, as well as the flow rate of the liquid. The cross-sectional area of the infusion pipeline is determined by the inner diameter of the inner pipe of the infusion pipeline, and the cross-sectional area of the bubble can be determined. The first volume of the bubble is determined by considering the bubble as a cylinder based on the cross-sectional area of the infusion line and the length of the bubble. The above-mentioned bubble volume calculation process is performed in the processor 130, and the above-mentioned calculation process is based on the internal environment of the infusion line at the time of infusion, and since the internal environment of the infusion line is different in pressure value corresponding to the atmospheric environment, the calculated bubble volume is also different. In order to enable medical staff to refer to the standard volume of the air bubble under the uniform pressure, the air bubble volume corresponding to the pressure value in the environment of the infusion pipeline is converted into the air bubble volume corresponding to the pressure value under the standard atmospheric pressure.
Specifically, a pressure sensor 140 is installed in the infusion line for detecting a pressure value at the time of infusion in the infusion line. And determining a second volume of the bubble under the standard atmospheric pressure according to the pressure value, the atmospheric pressure value and the calculated first volume of the bubble.
Referring to fig. 8, fig. 8 is a schematic diagram of an embodiment of an injection device 300 according to the present application, wherein the injection device 300 includes a processor 310 and a memory 320. The processor 310 is coupled to the memory 320, and the memory 320 stores a computer program, and the processor 310 is configured to execute the computer program.
The processor 310 may also be referred to as a C memory 320PU (Central Processing Unit ). The processor 310 may be an electronic chip with signal processing capabilities. Processor 310 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 320 may be a memory stick, TF card, etc., and may store all information in the injection device 300, including input raw data, computer programs, intermediate operation results, and final operation results, all stored in the memory 320. It stores and retrieves information based on the location specified by the processor 310. With the memory 320, the injection device 300 has a memory function to ensure proper operation. The memory 320 of the injection device 300 may be classified into a main memory (memory) and an auxiliary memory (external memory) according to the purpose, and may be classified into an external memory and an internal memory. The external memory is usually a magnetic medium, an optical disk, or the like, and can store information for a long period of time. The memory refers to a storage component on the motherboard for storing data and programs currently being executed, but is only used for temporarily storing programs and data, and the data is lost when the power supply is turned off or the power is turned off.
In the several embodiments provided in the present application, it should be understood that the disclosed methods and apparatus may be implemented in other manners. For example, the above-described embodiments of injection device 300 are merely illustrative, and additional divisions may be made in practice.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. Referring to fig. 9, fig. 9 is a schematic structural diagram of an embodiment of a computer readable storage medium provided in the present application, and the computer readable storage medium 200 stores a computer program 210 capable of implementing all the methods described above.
The units integrated with the functional units in the various embodiments of the present application may be stored in the computer-readable storage medium 200 if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or all or part of the technical solution, or in a software product, and the computer readable storage medium 200 includes several instructions in a computer program 210 to enable a computer device (may be a personal computer, a system server, or a network device, etc.), an electronic device (such as MP3, MP4, etc., also a mobile terminal such as a mobile phone, a tablet computer, a wearable device, etc., also a desktop computer, etc.), or a processor (processor) to perform all or part of the steps of the methods of the embodiments of the present application.
Optionally, in an embodiment, the computer program 210, when executed by a processor, is configured to implement the following method: acquiring an electric signal obtained by signal acquisition of the receiver 120; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media 200 (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flowchart and/or block of the flowchart and/or block diagrams, and combinations of flowcharts and/or block diagrams, can be implemented by computer readable storage medium 200. These computer-readable storage media 200 may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the computer program 210, which is executed by the processor of the computer or other programmable data processing apparatus, produces means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer-readable storage media 200 may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the computer program 210 stored in the computer-readable storage media 200 produces an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer-readable storage media 200 may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the computer program 210 executed on the computer or other programmable apparatus provides steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one embodiment, these programmable data processing devices include a processor and memory thereon. The processor may also be referred to as a CPU (Central Processing Unit ). The processor may be an electronic chip with signal processing capabilities. The processor may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be a memory bank, TF card, etc. that stores and retrieves information based on the location specified by the processor. The memories can be classified into main memories (memories) and auxiliary memories (memories) according to the purpose, and there are also classification methods of external memories and internal memories. The external memory is usually a magnetic medium, an optical disk, or the like, and can store information for a long period of time. The memory refers to a storage component on the motherboard for storing data and programs currently being executed, but is only used for temporarily storing programs and data, and the data is lost when the power supply is turned off or the power is turned off.
Different from the situation of the prior art, the application provides a bubble detection method of an infusion pipeline, the method is based on the following arrangement, a transmitter and a receiver are respectively arranged along two radial sides of the infusion pipeline, the transmitter and the receiver are arranged in a staggered manner, the transmitter is used for transmitting sensing signals, and the receiver is used for collecting the sensing signals, and the method comprises the following steps: acquiring an electric signal obtained by signal acquisition of a receiver; determining the duration of a preset level in the electrical signal; the volume of the air bubble in the infusion line is determined based on the duration. According to the preset level signal when the ultrasonic wave bubble detection device detects that the bubble passes, the length of the bubble can be determined according to the duration of the preset level and the flow rate of the bubble, the bubble is assumed to be a cylinder, and the volume of the bubble can be determined by utilizing a cylinder volume formula. In summary, the method has the advantages of simple equipment, simple and quick calculation method, and more practical calculation process.
The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (10)
1. The bubble detection method of the infusion pipeline is characterized in that a transmitter and a receiver are respectively arranged on two radial sides of the infusion pipeline, the transmitter is used for transmitting sensing signals, and the receiver is used for collecting the sensing signals, and the method comprises the following steps:
acquiring an electric signal obtained by signal acquisition of the receiver;
determining a duration of a preset level in the electrical signal;
and determining the volume of the bubbles in the infusion line according to the duration.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the determining the volume of the bubble in the infusion line according to the duration comprises:
determining pipe diameter parameters of the infusion pipeline and determining liquid flow rate of the infusion pipeline;
and determining the first volume of the air bubble in the infusion pipeline according to the pipe diameter parameter, the liquid flow rate and the duration.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the determining the first volume of the air bubble in the infusion line according to the pipe diameter parameter, the liquid flow rate and the duration time comprises the following steps:
determining the cross-sectional area of the infusion pipeline according to the pipe diameter parameter; and
determining the length of the air bubble in the infusion line according to the liquid flow rate and the duration;
and determining the first volume of the air bubble in the infusion pipeline according to the cross-sectional area and the length of the air bubble.
4. The method of claim 3, wherein the step of,
the method specifically comprises the following steps:
the first volume of the air bubble in the infusion line is calculated using the following formula:
wherein V is 1 For the first volume, d is the diameter of the infusion line, s is the liquid flow rate of the infusion line, and t is the duration of the preset level.
5. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the method further comprises the steps of:
acquiring a pressure value in the infusion pipeline;
and correcting the first volume according to the pressure value to obtain a second volume.
6. The method of claim 5, wherein the step of determining the position of the probe is performed,
said correcting said first volume according to said pressure value to obtain a second volume, comprising:
determining a correction coefficient according to the pressure value and the standard atmospheric pressure value;
and correcting the first volume by using the correction coefficient to obtain a second volume.
7. The method of claim 6, wherein the step of providing the first layer comprises,
the method specifically comprises the following steps:
the second volume of air bubbles in the infusion line is calculated using the formula:
wherein V is 1 For a first volume, V 2 A second volume, P is the pressure value in the infusion pipeline, P 0 Is the standard atmospheric pressure value.
8. A bubble detection device for an infusion line, the bubble detection device comprising:
a transmitter for transmitting a sensing signal;
the receiver is used for collecting the sensing signals, and the transmitter and the receiver are respectively arranged along the two radial sides of the infusion pipeline;
a processor connected to the receiver for performing the method of any one of claims 1-7 to determine the volume of air bubbles in the infusion line.
9. An injection device comprising a processor and a memory coupled to the processor, the memory having a computer program stored therein, the processor being configured to execute the computer program to implement the method of any of claims 1-7.
10. A computer readable storage medium, characterized in that a computer program is stored in the computer readable storage medium, which computer program, when being executed by a processor, is adapted to carry out the method according to any one of claims 1-7.
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| CN202210102474.1A CN116549773A (en) | 2022-01-27 | 2022-01-27 | Bubble detection method and device for infusion pipeline, injection device and storage medium |
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| CN202210102474.1A CN116549773A (en) | 2022-01-27 | 2022-01-27 | Bubble detection method and device for infusion pipeline, injection device and storage medium |
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