CN114596521A - Venous transfusion monitoring method and system based on vision measurement - Google Patents
Venous transfusion monitoring method and system based on vision measurement Download PDFInfo
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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
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
- A61M5/16886—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 for measuring fluid flow rate, i.e. flowmeters
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3327—Measuring
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
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Abstract
The invention discloses a method and a system for monitoring venous transfusion based on visual measurement, wherein the method comprises the following steps: s1: collecting a video image; s2: carrying out identification matching processing on the video image collected in the step S1 and calculating the liquid level position and the dropping speed of the infusion bottle; s3: alarming for abnormal conditions; the system comprises a camera module, a data transmission module, a data storage module, a data processing module and a handheld terminal which are electrically connected in sequence; the invention can output the liquid level position and the dropping speed in real time, sends out the alarm to the termination of the transfusion and the abnormal condition, has strong universality, can monitor in a remote distance and without contact, can reduce the workload of medical personnel, improves the accuracy rate of abnormal alarm and reduces the occurrence of medical accidents.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a venous transfusion monitoring method and system based on visual measurement.
Background
Intravenous infusion refers to the slow infusion of drugs directly into the patient's vein over a period of time to effect the treatment of various diseases. In order to ensure the safety and effectiveness of the infusion process, medical care personnel need to determine the infusion dropping speed according to the illness state, age and the property of the used medicine of a patient, and monitor the position of the liquid level in time, and replace or stop the input of the liquid medicine.
The continuous development of wireless network technology and computer technology promotes the proposal of a wireless monitoring method in the infusion process. At present, infusion monitoring devices reported at home and abroad are mainly classified into three types: the infusion monitoring and alarming device is a single infusion monitoring and alarming device, and the device can not realize the unified infusion monitoring and management of nursing staff on multiple infusion patients at the same time; the infusion monitoring network platform is mostly arranged on a computer of a nurse station, and nurses cannot carry the infusion monitoring network platform with the computer and cannot meet the requirements of infusion management work under the conditions of field, emergent public events, emergency rescue and the like; and thirdly, the infusion monitoring system is provided with a handheld terminal which can be carried remotely, and the infusion monitoring device is convenient for medical staff to monitor the infusion condition of the patient in the moving process, so that the safety and the effectiveness of the infusion process of the patient are ensured.
Most of the three types of venous transfusion monitoring devices calculate the dropping speed based on the infrared sensing principle, and estimate the transfusion time according to the dropping speed, and the deviation estimation of the transfusion termination time may be caused by the situation that the medicine liquid is increased or reduced during the medicine dispensing. And the existing monitoring system basically comprises a box body which can be embedded with an infrared sensing element, various tubular Murphy tubes and other structures, and the process of installing and disassembling the box body is needed for every infusion monitoring.
Disclosure of Invention
In order to solve the problems that the existing transfusion monitoring equipment needs to be repeatedly mounted and dismounted and the estimation of the transfusion termination time has deviation, the invention provides a method and a system for monitoring venous transfusion based on visual measurement, and the specific scheme is as follows:
a venous transfusion monitoring method based on visual measurement comprises the following steps:
s1: collecting a video image;
s2: carrying out identification matching processing on the video image collected in the step S1 and calculating the liquid level position and the dropping speed of the infusion bottle;
s3: an alarm is given to the abnormality of the liquid level position and the dropping speed in step S2.
Preferably, the video images acquired in step S1 include video images of the patient' S bed number, infusion bottle, and drip chamber.
Preferably, in step S2, the patient bed number is identified by using a digital identification algorithm and matched with the patient identity information and the medication condition entered into the hospital information management system, wherein the specific steps of identifying the patient bed number by using the digital identification algorithm are as follows:
a1, graying and binarizing a first frame image in the video image containing the patient bed position number;
a2, denoising and performing character cutting;
a3, extracting the characteristics of each character to generate a characteristic matrix;
a4, matching the feature matrix with the digital pictures in the sample library, thereby identifying the bed number.
Preferably, in step S2, the feature extraction algorithm is used to identify the infusion bottle and the drip chamber, and the specific steps are as follows:
b1, respectively shooting images of an infusion bottle and a drip chamber with high signal-to-noise ratio as query objects; taking a video image of the venous transfusion process as an image to be inquired;
b2, extracting the characteristic points of the query object and the image to be queried, and detecting the characteristic points;
b3, calculating a query object and a descriptor with a query image;
b4, traversing the descriptor and calculating the matching quality;
b5, finally identifying the infusion bottle and the drip chamber in the image to be inquired by the matching items of ratio check.
Preferably, in step S2, the liquid level position is calculated by using an image processing algorithm, and the specific steps are as follows:
c1, graying the identified infusion bottle image;
c2, filtering and denoising the grayed image in the c 1;
and c3, performing edge detection on the image subjected to the filtering and noise reduction processing in the c2 to obtain the liquid level position.
Preferably, in step S2, the dropping speed is calculated by using a standard deviation-frequency spectrum method, and the specific steps are as follows:
d1, graying the identified drip chamber image;
d2, calculating the standard deviation distribution of the gray level image;
d3, calculating the spectrum distribution of the standard deviation distribution;
d4, obtaining the dropping speed value from the frequency spectrum distribution.
Preferably, the abnormality in step S3 includes an abnormality when the calculated liquid surface position is when the drug solution reaches the preset vial opening position and an abnormality when the calculated dropping speed is not within the preset dropping speed threshold.
The invention also discloses a computer readable storage medium, wherein a computer program is stored on the medium, and after the computer program is operated, the venous transfusion monitoring method based on the vision measurement is executed.
The invention also discloses a computer system which comprises a processor and a storage medium, wherein the storage medium is stored with a computer program, and the processor reads the computer program from the storage medium and runs the computer program to execute the venous transfusion monitoring method based on the visual measurement.
Preferably, the system of the venous transfusion monitoring method based on the vision measurement comprises a camera module, a data transmission module, a data storage module, a data processing module and a handheld terminal which are electrically connected in sequence; the camera module is arranged in a position in the infusion room where video images are convenient to collect, and the data transmission module, the data storage module and the data processing module are compatible with an existing information management system of a hospital;
the camera module is used for acquiring video images containing the bed number of the patient, an infusion bottle and a drip chamber;
the data transmission module is used for transmitting the video image data acquired by the camera module to the data storage module;
the data storage module is used for storing the video image data acquired by the camera module and the patient identity information and the medication condition of the hospital information management system;
the data processing module is used for identifying the number of the patient's bed, matching the number with the patient's identity information and medication condition entered into the hospital information management system, and calculating the liquid level position and the dropping speed of the infusion bottle;
the handheld terminal receives the patient identity information and the result processed by the data processing module through the data transmission module and is used for presenting the patient identity information, the medication condition, the liquid level position, the real-time dripping speed and the abnormal condition to medical personnel.
The invention has the beneficial effects that:
(1) the invention adopts the camera module to shoot the venous transfusion system, and the data transmission module, the data processing module and the data storage module are compatible with the existing information management system of a hospital, so that the camera equipment is required to be installed at a reasonable position, other equipment is not required to be additionally added, the box body assembling and disassembling process during each transfusion monitoring is not required, the cost is reduced, the operation is simple and convenient, and the realization is easy.
(2) The invention monitors the venous transfusion process based on the vision measurement technology, effectively improves the accuracy of the transfusion termination time prediction, and has the advantages of non-contact type, remote measurement and large measurement range which are unique to the vision measurement technology.
(3) The handheld terminal is convenient for medical personnel to carry.
(4) The camera module can shoot a plurality of groups of infusion processes at one time, so that the infusion processes of the plurality of groups can be monitored simultaneously, and the working intensity of medical workers is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a flow chart of the present invention for identifying a patient bed number using a digital identification algorithm;
FIG. 3 is a flow chart of the present invention for identifying an infusion bottle and a drip chamber using a feature extraction algorithm;
FIG. 4 is a flow chart of the present invention for calculating the liquid level position using an image processing algorithm;
FIG. 5 is a flow chart of the present invention for calculating the drop velocity using standard deviation-frequency spectroscopy;
fig. 6 is a block diagram of the system architecture of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for monitoring intravenous infusion based on visual measurement includes the following steps:
s1: collecting a video image;
s2: carrying out identification matching processing on the video image collected in the step S1 and calculating the liquid level position and the dropping speed of the infusion bottle;
s3: and alarming the abnormal condition.
The video images acquired in step S1 include video images of the patient' S bed number, infusion bottle, and drip chamber.
In the step S2, the digital recognition algorithm is used for recognizing the patient bed number and matching the patient identity information and the medication condition which are input into the hospital information management system; identifying the infusion bottle and the drip chamber by using a characteristic extraction algorithm with strong anti-illumination interference capability; calculating the liquid level position by using an image processing algorithm; the drop velocity was calculated using the standard deviation-frequency spectrum method.
Referring to fig. 2, the specific steps of identifying the patient's bed number using the number identification algorithm are as follows:
a1, graying and binarizing a first frame image in the video image containing the patient bed number;
a2, denoising and performing character cutting;
a3, extracting the characteristic of each character to generate a characteristic matrix;
a4, matching the feature matrix with the digital pictures in the sample library, thereby identifying the bed number.
Referring to fig. 3, the feature extraction algorithm is used to identify the infusion bottle and the drip chamber, and the specific steps are as follows:
b1, respectively shooting images of an infusion bottle and a drip chamber with high signal-to-noise ratio as query objects; taking a video image of the venous transfusion process as an image to be inquired;
b2, extracting the characteristic points of the query object and the image to be queried, and detecting the characteristic points;
b3, calculating a query object and a descriptor with a query image;
b4, traversing the descriptor and calculating the matching quality;
b5, finally identifying the infusion bottle and the drip chamber in the image to be inquired by the matching items of ratio check.
As shown in fig. 4, the liquid level position is calculated by using an image processing algorithm, which comprises the following specific steps:
c1, graying the identified infusion bottle image;
c2, filtering and denoising the grayed image in the c 1;
and c3, performing edge detection on the image subjected to the filtering and noise reduction processing in the c2 to obtain the liquid level position.
As shown in fig. 5, the dropping speed is calculated by the standard deviation-frequency spectrum method, and the specific steps are as follows:
d1, graying the identified drip chamber image;
d2, calculating the standard deviation distribution of the gray level image;
d3, calculating the spectrum distribution of the standard deviation distribution;
d4, obtaining the dropping speed value from the frequency spectrum distribution.
The abnormal situation in step S3 includes: the calculated liquid level position is abnormal when the liquid medicine reaches the preset bottle mouth position, and the calculated dropping speed is abnormal when the dropping speed is not within the preset dropping speed threshold.
Referring to fig. 6, a system of a method for monitoring intravenous infusion based on visual measurement includes a camera module, a data transmission module, a data storage module, a data processing module and a handheld terminal, which are electrically connected in sequence; the camera module is arranged at a position where a video image is convenient to collect in the infusion room, and the data transmission module, the data storage module and the data processing module are compatible with the existing information management system of the hospital.
The camera module is used for acquiring video images containing the bed number of the patient, the infusion bottle and the drip chamber. The frame rate of the camera module is larger than 4Hz, and common and cheap digital cameras, network cameras, smart phones and the like can be selected as the camera module according to the current material level of a hospital.
The data transmission module is used for transmitting the video image data acquired by the camera module to the data storage module. The data storage module is used for storing the video image data acquired by the camera module and the patient identity information and the medication condition of the hospital information management system. The data transmission module and the data storage module are compatible with the existing information management system of the hospital, can transmit the video images and program codes readable on the computer by using any appropriate medium according to the current material conditions of the hospital, such as wireless, wire, optical cable, radio frequency, and the like, or any appropriate combination of the above, and can automatically store the video images and subsequent data processing results and the like in the internal memory of the computer device or a network-based storage server according to the current material conditions of the hospital.
The data processing module identifies the bed number of the patient in the monitoring video according to a digital identification algorithm, and matches and inputs the patient identity information and the medication condition of the hospital information management system according to the bed number; meanwhile, a characteristic extraction algorithm with strong anti-illumination interference capability is used for identifying the infusion bottle and the drip chamber, the position of the liquid level is calculated by using an image processing algorithm, and the dripping speed is calculated by using a standard deviation-frequency spectrum method.
The handheld terminal receives the patient identity information and the result processed by the data processing module through the data transmission module, and is used for presenting the patient identity information, the medication condition, the liquid level position, the real-time dripping speed and the abnormal condition to medical staff.
The invention adopts the camera module to shoot the venous transfusion system, adopts the scheme that the data transmission module, the data processing module and the data storage module are compatible with the existing information management system of the hospital, does not need to additionally add other equipment except camera equipment at a reasonable position, does not need the box body dismounting process in each transfusion monitoring process, reduces the cost, is simple and convenient to operate and is easy to realize. The invention monitors the venous transfusion process based on the vision measurement technology, effectively improves the accuracy of the transfusion termination time prediction, and has the advantages of non-contact type, remote measurement and large measurement range which are unique to the vision measurement technology. The terminal is held by hand, so that the medical staff can carry the terminal conveniently. The camera module can shoot a plurality of groups of infusion processes at one time, so that the infusion processes of the plurality of groups can be monitored simultaneously, and the working intensity of medical workers is greatly reduced.
The invention also discloses a computer readable storage medium, wherein a computer program is stored on the medium, and after the computer program is operated, the venous transfusion monitoring method based on the vision measurement is executed.
The invention also discloses a computer system which comprises a processor and a storage medium, wherein the storage medium is stored with a computer program, and the processor reads the computer program from the storage medium and runs the computer program to execute the venous transfusion monitoring method based on the visual measurement.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with 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, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A venous transfusion monitoring method based on visual measurement is characterized by comprising the following steps:
s1: collecting a video image;
s2: carrying out identification matching processing on the video image collected in the step S1 and calculating the liquid level position and the dropping speed of the infusion bottle;
s3: an alarm is given to the abnormality of the liquid level position and the dropping speed in step S2.
2. The method of claim 1, wherein: the video images acquired in step S1 include video images of the patient' S bed number, infusion bottle, and drip chamber.
3. The method according to claim 2, wherein the patient bed number is identified in step S2 by using a digital identification algorithm, and the patient bed number is matched with the patient identity information and the medication condition entered into the hospital information management system, wherein the steps of identifying the patient bed number by using the digital identification algorithm are as follows:
a1, graying and binarizing a first frame image in the video image containing the patient bed number;
a2, denoising and performing character cutting;
a3, extracting the characteristics of each character to generate a characteristic matrix;
a4, matching the feature matrix with the digital pictures in the sample library, thereby identifying the bed number.
4. The method according to claim 2, wherein the step S2 of identifying the infusion bottle and the drip chamber by using a feature extraction algorithm comprises the following steps:
b1, respectively shooting images of an infusion bottle and a drip chamber with high signal-to-noise ratio as query objects; taking a video image of the venous transfusion process as an image to be inquired;
b2, extracting the characteristic points of the query object and the image to be queried, and detecting the characteristic points;
b3, calculating the query object and the descriptor with the query image;
b4, traversing the descriptors and calculating the matching quality;
b5, finally identifying the infusion bottle and the drip chamber in the image to be inquired by the matching items of ratio check.
5. The method according to claim 2, wherein the step S2 of calculating the liquid level position by using an image processing algorithm comprises the following specific steps:
c1, graying the identified infusion bottle image;
c2, filtering and denoising the gray images in the c 1;
and c3, performing edge detection on the image subjected to the filtering and noise reduction processing in the c2 to obtain the liquid level position.
6. The method according to claim 2, wherein the step S2 of calculating the dropping speed by using the standard deviation-frequency spectrum method comprises the following specific steps:
d1, graying the identified drip chamber image;
d2, calculating the standard deviation distribution of the gray level image;
d3, calculating the spectrum distribution of the standard deviation distribution;
d4, obtaining the dropping speed value from the frequency spectrum distribution.
7. The method of claim 1, wherein: the abnormality in step S3 includes an abnormality when the calculated liquid surface position is when the liquid medicine reaches the preset bottle opening position and an abnormality when the calculated dropping speed is not within the preset dropping speed threshold.
8. A computer-readable storage medium characterized by: a computer program stored on a medium, which computer program, when executed, performs a method of monitoring intravenous fluid based on visual measurements according to any one of claims 1 to 7.
9. A computer system, characterized by: comprising a processor, a storage medium having a computer program stored thereon, the processor reading and executing the computer program from the storage medium to perform the method of monitoring intravenous infusion based on visual measurements according to any one of claims 1 to 7.
10. A system for use in a method of intravenous fluid monitoring based on visual measurements according to any of claims 1 to 7, characterized in that: the system comprises a camera module, a data transmission module, a data storage module, a data processing module and a handheld terminal which are electrically connected in sequence; the camera module is arranged in a position in the infusion room where a video image is convenient to acquire, and the data transmission module, the data storage module and the data processing module are compatible with an existing information management system of a hospital;
the camera module is used for acquiring video images including the bed number of the patient, an infusion bottle and a drip chamber;
the data transmission module is used for transmitting the video image data acquired by the camera module to the data storage module;
the data storage module is used for storing the video image data acquired by the camera module and the patient identity information and the medication condition of the hospital information management system;
the data processing module is used for identifying the number of the patient's bed, matching the number with the patient's identity information and medication condition entered into the hospital information management system, and calculating the liquid level position and the dropping speed of the infusion bottle;
the handheld terminal receives the patient identity information and the result processed by the data processing module through the data transmission module and is used for presenting the patient identity information, the medication condition, the liquid level position, the real-time dripping speed and the abnormal condition to medical personnel.
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