CN109589475A - The accuracy automatic checkout system and method for infusion equipment - Google Patents
The accuracy automatic checkout system and method for infusion equipment Download PDFInfo
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- CN109589475A CN109589475A CN201811448593.2A CN201811448593A CN109589475A CN 109589475 A CN109589475 A CN 109589475A CN 201811448593 A CN201811448593 A CN 201811448593A CN 109589475 A CN109589475 A CN 109589475A
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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
- A61M5/16886—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
- A61M5/16895—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 by monitoring weight change, e.g. of infusion container
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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
- A61M5/142—Pressure infusion, e.g. using pumps
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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
- A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
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- Heart & Thoracic Surgery (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This application involves the accuracy automatic checkout systems and method of a kind of infusion equipment, the accuracy automatic checkout system includes key, controller, memory, electronic balance and automatic switching control equipment, controller connects key, memory, electronic balance and automatic switching control equipment, is also used to connect infusion equipment；Electronic balance is set to the delivery outlet of the liquid-transport pipe-line of connection infusion equipment, and automatic switching control equipment is set to liquid-transport pipe-line.When the range of electronic balance cannot support the test under current test pattern, switching control is sent to instruct to automatic switching control equipment, electronic balance is delivered to control automatic switching control equipment for the testing liquid that infusion equipment in preset sampling time period exports, outrange to avoid liquid excessive, test process is participated in without artificial, test error caused by operating because of personnel, high degree of automation are effectively avoided, and improves the test accuracy of infusion equipment.
Description
Technical field
This application involves infusion equipment technical fields, more particularly to a kind of accuracy automatic checkout system of infusion equipment
And method.
Background technique
Infusion pump and syringe pump are that clinical application is extensive, the relatively high Medical Devices of risk class, are usually used in needing stringent
The infant and high-risk period patient of Charge control, infusion is too fast or too slow all will to cause adverse effect to the state of an illness of patient, even
Threat to life.Therefore, how to effectively control the accuracys of infusion equipment operational data, such as to flow velocity, flow, pill data into
Row monitoring is particularly significant.
Previous infusion flow rate pump test software is using Microsoft Excel storing data and to generate image, tester's control
After infusion pump processed starts infusion, tester manually boots software, the liquid quality and meter that computer acquisition electronic balance detects
It calculates flow velocity and needs the next pilot project of artificial selection, and manual analysis data and result after test terminates.Work as test
It when time is longer, is limited by electronic balance range, needs tester periodically to remove injection needle manually and avoid the liquid flowed into
Excessively outrange, it is unavoidable to will appear the test error generated by human factor, traditional infusion pump flow rate test method
There are test accuracies it is low, the degree of automation is poor the disadvantages of.
Summary of the invention
Based on this, it is necessary to a kind of the defeated of test accuracy and high degree of automation can be improved in view of the above-mentioned problems, providing
The accuracy automatic checkout system and method for liquid equipment.
A kind of accuracy automatic checkout system of infusion equipment, including key, controller, memory, electronic balance and from
Dynamic switching device, the controller connect the key, the memory, the electronic balance and the automatic switching control equipment,
It is also used to connect infusion equipment；The electronic balance is set to the delivery outlet for connecting the liquid-transport pipe-line of the infusion equipment, described
Automatic switching control equipment is set to the liquid-transport pipe-line；
The key is for sending test starting command to the controller；The automatic switching control equipment is for receiving
The testing liquid for exporting infusion equipment described in preset sampling time period when the switching control instruction that the controller is sent
It is delivered to the electronic balance；The electronic balance to the testing liquid of input for measuring to obtain weight data；
The controller is obtained and is stored in the memory when receiving the test starting command that the key is sent
Test condition data carries out test pattern setting according to the test condition data of acquisition；Institute is controlled according to the test pattern of setting
Infusion equipment and electronic balance work are stated, and in the case where the range of the electronic balance cannot support current test pattern
When test, sends switching control and instruct to the automatic switching control equipment；The controller is also used to acquire the electronic balance and surveys
The weight data measured, and test data is calculated according to the weight data in the sampling time period.
A kind of accuracy automatic testing method of infusion equipment, comprising:
When receiving the test starting command of key transmission, the test condition data stored in memory is obtained, according to
The test condition data of acquisition carries out test pattern setting；
Infusion equipment and electronic balance work are controlled according to the test pattern of setting, and in the range of the electronic balance
When cannot support the test under current test pattern, sends switching control and instruct to automatic switching control equipment；The switching control refers to
It enables and being conveyed for controlling the testing liquid that the automatic switching control equipment exports infusion equipment described in preset sampling time period
To the electronic balance；
The weight data that the electronic balance measurement obtains is acquired, and according to the weight data meter in the sampling time period
Calculation obtains test data.
The accuracy automatic checkout system and method for above-mentioned infusion equipment, in the test starting command for receiving key transmission
When obtain the test condition data that stores in memory, test pattern setting is carried out according to the test condition data of acquisition；According to
The test pattern control infusion equipment and electronic balance work of setting, and cannot support currently to test in the range of electronic balance
When test under mode, sends switching control and instruct to automatic switching control equipment, to control automatic switching control equipment for preset sampling
The testing liquid that infusion equipment exports in period is delivered to electronic balance.The weight data that acquisition electronic balance measurement obtains,
And test data is calculated according to the weight data in sampling time period.By starting to infusion equipment and electronic balance
It is spontaneous when the range of electronic balance cannot support the test under current test pattern with the automatic control of data acquisition
The testing liquid that infusion equipment in sampling time period exports only is delivered to electronic balance and detected by control automatic switching control equipment,
Outrange to avoid testing liquid excessive, test process is participated in without artificial, effectively avoids survey caused by operating because of personnel
Error, high degree of automation are tried, and improves the test accuracy of infusion equipment.
Detailed description of the invention
Fig. 1 is the structural block diagram of the accuracy automatic checkout system of infusion equipment in an embodiment；
Fig. 2 is the structural block diagram of the accuracy automatic checkout system of infusion equipment in another embodiment；
Fig. 3 is the structure principle chart of the accuracy automatic checkout system of infusion equipment in an embodiment；
Fig. 4 is the structure chart of automatic switching control equipment in an embodiment；
Fig. 5 is the connection schematic diagram of the accuracy automatic checkout system of infusion equipment in an embodiment；
Fig. 6 is the testing process schematic diagram of the accuracy automatic checkout system of infusion equipment in an embodiment；
Fig. 7 is the data schematic diagram of calculation flow of the accuracy automatic checkout system of infusion equipment in an embodiment；
Fig. 8 is that the result of the accuracy automatic checkout system of infusion equipment in an embodiment judges schematic diagram；
Fig. 9 is the flow chart of the accuracy automatic testing method of infusion equipment in an embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, a kind of accuracy automatic checkout system of infusion equipment is provided, as shown in Figure 1, the standard
True property automatic checkout system includes key 110, controller 120, memory 130, electronic balance 140 and automatic switching control equipment 150,
Controller 120 connects key 110, memory 130, electronic balance 140 and automatic switching control equipment 150, is also used to connect infusion and sets
It is standby.Electronic balance 140 is set to the delivery outlet of the liquid-transport pipe-line of connection infusion equipment, and automatic switching control equipment 150 is set to infusion
Pipeline.Key 110 is for sending test starting command to controller.Automatic switching control equipment 150 is used to receive controller hair
The testing liquid that infusion equipment in preset sampling time period exports is delivered to electronics day by control when the switching control instruction sent
Flat 140.Testing liquid of the electronic balance 140 for input measures to obtain weight data.Controller 120 is receiving key
When the test starting command of 110 transmissions, the test condition data stored in memory 130 is obtained, according to the test condition of acquisition
Data carry out test pattern setting.Controller 120 controls infusion equipment and 140 work of electronic balance according to the test pattern of setting
Make, and when the range of electronic balance 140 cannot support the test under current test pattern, send switching control instruct to from
Dynamic switching device 150.Controller 120 is also used to acquire electronic balance 140 and measures obtained weight data, and according to sample time
Test data is calculated in weight data in section.Wherein, single-chip microcontroller, MCU (Micro Control can be used in controller 120
Unit, micro-control unit) or computer etc..Infusion equipment can be infusion pump or syringe pump, and infusion pump can be the infusion of capacity formula
Pump, portable 1 type infusion pump, portable 2 type infusion pump, 3 type infusion pumps, 4 type infusion pumps and 5 type infusion pumps.For ease of understanding,
It is explained for carrying out flow velocity test to infusion pump below.
Specifically, the test condition data stored in memory 130 can only one kind, be also possible to two kinds or two kinds with
On, the corresponding test pattern of each test condition data.If memory 130 only stores a kind of test condition data, control
Device 120 processed is after the test starting command for receiving the transmission of key 110, directly according to the test condition stored in memory 130
Data carry out test pattern setting.If the storage of memory 130 there are many test condition data, controller 120 receive by
After the test starting command that key 110 is sent, it can be and be successively read a kind of test condition data progress test pattern setting, and point
The other infusion flow rate pump under different test patterns is tested.In addition, user is also possible to select by 110 sending mode of key
Instruction is selected to controller 120, controller 120 based on the received surveyed by the corresponding test condition data of mode selection command reading
Try mode setting.
The particular content of test condition data is not unique, it will be understood that, control different according to the content of test condition data
The mode that device 120 processed carries out test pattern setting can also correspond to different.In one embodiment, test condition data includes
One of infusion flow rate, height, testing background pressure and test period are a variety of.Wherein, infusion flow rate refers to control infusion pump
Flow velocity highly refers to the difference in height of solution water plane and injection needle point in the solution container for containing testing liquid in infusion pumping unit,
Testing background pressure refers to test local environment pressure, and test period refers to test total duration.It include infusion flow rate with test condition data
For test period, after the test condition data that controller 120 stores in reading memory 130, to test period and
The flow velocity of infusion pump is configured, and infusion pump and electronic balance work are then controlled under current test pattern.
Further, the range of electronic balance 140 cannot support the test under current test pattern, that is, refer to electronic balance
140 can not support the entire testing process under current test pattern because of range deficiency.Equally to carry out flow velocity survey to infusion pump
For examination, controller 120 can pre-save the range of electronic balance 140, and the test-strips stored in reading memory 130
Number of packages evidence obtains the testing liquid that entire testing process is input to electronic balance 140 according to the flow velocity of test period and infusion pump
Gross mass, if it exceeds the range of electronic balance 140 then can determine that the range of electronic balance 140 cannot support current test pattern
Under flow velocity test, send switching control and instruct to automatic switching control equipment 150, control automatic switching control equipment 150 and taken preset
The testing liquid that infusion pump exports in the sample period is delivered to electronic balance 140, to make the to be measured of 140 pairs of electronic balance inputs
Liquid measures to obtain weight data so that controller 120 carries out data acquisition.
Sampling time period, which refers to, needs to acquire the period that data are tested in entire testing process, according to actual needs not
Together, the specific setting of sampling time period would also vary from.In one embodiment, before sampling time period is after test starts
Two hours and last hour.Accordingly, if the range of electronic balance 140 cannot support the flow velocity under current test pattern
Test, then controller 120 control automatic switching control equipment 150 act, only will test start after the first two hour and last
The testing liquid of infusion pump output transmits by liquid-transport pipe-line and is input to electronic balance 140 in hour, in non-sampling time period
The testing liquid of the testing liquid of infusion pump output is transferred to outside electronic balance 140, such as is transported in other complementary tanks and is protected
It deposits.In this way, can be when the flow velocity under the range of electronic balance 140 cannot support current test pattern is tested, control is automatically switched
Device 150 executes liquid timing diverter function automatically, and avoiding the testing liquid inputted in test process is more than electronic balance 140
Range.It is appreciated that if the range of electronic balance 140 can support the flow velocity under current test pattern to test, controller 120
Without sending switching control instruction, automatic switching control equipment 150 does not start.
Controller 120 to electronic balance 140 measure the mode that obtained weight data is acquired be also not uniquely,
In one embodiment, controller 120 reads the weight number that electronic balance 140 measures to be higher than the frequency of preset sample frequency value
According to, and data acquisition is carried out with preset sample frequency value after receiving weight data.Tested person speed after infusion pump startup
(such as minimum speed 1ml/h or minimum optional speed 0.1ml/h), infusion pipeline situation (such as pipeline do not straighten completely, pipeline or
There is a small amount of air in person's syringe needle end) etc. factors influence, even if accuracy automatic checkout system starts simultaneously with infusion pump, still having can
The case where system does not receive data in a short time can occur.To eliminate this unfavorable factor, in the present embodiment, in test macro
After starting in the short time, takes high-frequency continuously to read the mode of balance data, become normal frequency after receiving data
Start official testing and further improves testing reliability so as to effectively reduce starting error.It is appreciated that at other
In embodiment, controller 120 is also possible to directly carry out data acquisition according to preset sample frequency.
In one embodiment, as shown in Fig. 2, accuracy automatic checkout system includes the alarm for connecting controller 120
160.Controller 120 is attached self-test operations when receiving the test starting command of the transmission of key 110, is connecting self-test just
The test condition data stored in memory is obtained when often, and test pattern setting is carried out according to the test condition data of acquisition, and
Alarm 160 is controlled when connecting self-test exception exports prompt messages.
Loudspeaker or alarm lamp etc. specifically can be used in alarm 160, and controller 120 is in the starting for receiving the transmission of key 110
Self-test, the connection status of detection and electronic balance 140 and infusion equipment are first attached after test instruction, if it is possible to acquisition electricity
The data that sub- balance 140 and infusion equipment return then connect normally, carry out subsequent mode setting and flow velocity test operation.If
Connection self-test then controls alarm 160 extremely and exports prompt messages, to inform that tester overhauls in time.In addition, flowing
In fast test process if there is data acquisition abnormity, communication abnormality when, the equally controllable output of alarm 160 alarm
Prompt information.
Further, in one embodiment, with continued reference to Fig. 2, accuracy automatic checkout system further includes connection control
At least one of display 170, printer 180 and host computer 190 of device 120.It is wrapped simultaneously with accuracy automatic checkout system
For including display 170, printer 180 and host computer 190, controller 120, can be according to test after test data is calculated
Data carry out calculating analysis, and are judged according to standard qualified or not, generate test report and are printed by printer 180, and will
Test data is uploaded to host computer 190 for data analysis.Test data is sent to display 170 and shown by controller 120
Show, so that tester checks in local computer or remotely.In addition, controller 120 can also save test data to depositing
In reservoir 130.It is appreciated that acquisition, display, preservation, calculating, analysis, upload and report that controller 120 carries out data are beaten
Print control, can be after obtaining test data, and automatic control command to the respective devices that send are controlled, and be also possible to
It is carried out after receiving the control instruction that tester is sent by key 110.
Wherein, display 170 can use LCD (Liquid Crystal Display, liquid crystal display) display, on
Position machine 190 can be computer, host desktop or server etc..Specifically, display 170 and controller 120 can pass through parallel port
Data communication is carried out, controller 120 is communicated by USB serial communication or network (wired or wireless) with host computer 190, deposited
Communicated between reservoir 130 and controller 120 by I2C serial ports, controller 120 by RS232 serial ports and printer 180 into
Row communication.Controller 120 can be communicated with infusion equipment by RS232 serial ports, and controller 120 and electronic balance 140 are logical
RS232 serial ports is crossed to be communicated.The various most common test conditions of default of storage in memory 130, when test, can directly adjust
With these conditions；If encountering special test request, tester can also be arranged by key new test condition and its
It is stored in memory, is called directly when to test.
It is provided by the present application accurate due to not seeing full automatic infusion equipment test macro in the market at home and abroad
Property automatic checkout system can be achieved on " closed loop " structure of test once big advantage, as shown in figure 3, using infusion equipment as quilt
Infusion pump is surveyed, host computer 190 in computer, controller 120, is tested shape between infusion pump and electronic balance 140 using for computer
At " closed loop " of a signal stream.Operator only needs to select the type and standard of equipment, and click starts, and can start pair
One infusion pump carries out automatic test, data storage, automatic Evaluation and the automatic printing report of accuracy all events, realizes " one
Keyed " performance evaluation.
The specific structure of automatic switching control equipment 150 is not unique, in one embodiment, as shown in figure 4, automatically switching dress
Setting 150 includes motor 152, transmission mechanism 154, screw rod 156 and perfusion tube card slot 158, and motor 152 connects controller 120 and passes
Motivation structure 154, transmission mechanism 154 connect perfusion tube card slot 158 by screw rod 156, and perfusion tube card slot 158 is set to perfusion tube
Road.Motor 152 is instructed according to the switching control that controller 120 is sent, and transmission mechanism 154 is controlled in sampling time period and passes through spiral shell
Bar 156 drives perfusion tube card slot 158 mobile, so that the testing liquid of infusion equipment output is delivered to electronic balance 140.
In addition, automatic switching control equipment 150 may also include triple valve 159, the quantity of perfusion tube card slot 158 is two and difference
It is set to the both ends of screw rod 156.By taking infusion equipment is infusion pump as an example, the input terminal of triple valve 159 is connected by liquid-transport pipe-line
Infusion pump EUT, the first output end and second output terminal are conveyed on testing liquid to electronic balance 140 by liquid-transport pipe-line respectively
Measuring cup and complementary tank 200.One of perfusion tube card slot 158 is set to the infusion of conveying testing liquid to electronic balance 140
In pipeline, another perfusion tube card slot 158 is set to conveying testing liquid into the liquid-transport pipe-line of complementary tank 200.It is testing
The first two hour after beginning and test terminate before the last one hour, controller 120 controls 152 ambulatory infusion pipe of motor
Card slot 158, the testing liquid for exporting infusion pump EUT flow to electronic balance 140, after measurement starts two hours and survey
Examination terminate a hour before, controller 120 control 152 ambulatory infusion pipe clamp slot 158 of motor, make infusion pump EUT export to
It surveys liquid and flow to complementary tank 200.Complementary tank 200 controls 152 ambulatory infusion pipe of motor again in measuring last hour
Card slot 158, the testing liquid for exporting infusion pump EUT flow to electronic balance 140.
The concrete type of test data is not unique, and controller 120 is calculated according to the weight data in sampling time period
To test data concrete mode can also correspond to it is different.In one embodiment, test data include real-time flow rate figure, on
Rise curve graph, flared curve figure and test result.Equally for carrying out flow velocity test to infusion pump, wherein real-time flow rate figure
To be obtained according to the flow velocity at entire test period at each moment, ascending curve figure is obtained according to the flow velocity of test the first two hour, loudspeaker
Curve graph is obtained according to the error of mean flow rate between the sampling intervals different in sampling time period, and flared curve figure is infusion pump
The accurate index of flow velocity fluctuation, flared curve figure can be reflected in the corresponding largest percentage stream of difference observation window in analytical cycle
Measure error and minimum percent flow error.It is different according to the type of infusion equipment, generate test stream used in flared curve figure
Speed is also different, if infusion equipment is infusion pump, generates flared curve figure according to the flow velocity of second hour and last hour；
If infusion equipment is syringe pump, according to the flow velocity flared curve figure of second hour.Test result is characterized to infusion pump
Whether qualified flow control performance indicator is used as instruction infusion pump flow control.In conjunction with flow velocity, flow error statistics and flow velocity control
Performance processed, which is detected, carries out complete detection to infusion flow rate pump, improves the accuracy and reliability of flow rate detection.
Further, in one embodiment, controller 120 is calculated in sampling time period different according to weight data
Volume data in sampling interval；The flow rate error in sampling time period in the different sampling intervals is obtained according to volume data；Root
Maximum positive negative value of error is taken to generate the flared curve figure in sampling time period according to flow rate error.
Wherein, the sampling interval can measure according to controller 120 electronic balance 140 sample frequency of obtained weight data
It determines.By taking sampling time period includes the first two hour and last hour after test starts as an example, in the present embodiment, it will test
It second hour after beginning and tests last hour and is divided by the sampling interval, will be collected in each sampling interval
Weight data be converted into volume data.In second hour after starting for test, according to what is obtained during the sampling interval
Volume data, during seeking each sampling interval, during the every two sampling interval, during every three sampling intervals, it is every M sampling
The mean flow rate of interim (M be less than or equal to interval sum) simultaneously calculates error, during extracting each sampling interval, every two
Max value of error and error minimum value during sampling interval, during every three sampling intervals, during every M sampling interval, institute
The upper limit curve of flared curve figure is made of max value of error, all error minimum values can form the lower limit curve of loudspeaker figure,
The average speed in second hour after starting then in conjunction with test can obtain the loudspeaker in second hour after test starts
Curve graph.The flared curve figure for testing last hour is similarly calculated, and details are not described herein.Sampling interval specifically takes
Value is not unique, and in the present embodiment, the sampling interval is 30 seconds.
Further, in one embodiment, if the absolute value of flow velocity mean error is respectively less than default in sampling time period
Limits of error threshold value, then test result be qualification.Accordingly, controller 120 is second hour after being calculated test
After testing the flow rate error in last hour during the different sampling intervals, extracts after test second hour and test last
Hour flow velocity mean error, and after a test second hour and test last hour flow velocity mean error absolute value it is equal
When less than limits of error threshold value, then it can determine whether the flow velocity test result to infusion pump for qualification；Conversely, then unqualified.
It should be noted that the quantity for the infusion equipment tested as needed is different, the quantity of electronic balance 140 also can be right
Answer difference.As shown in figure 5, by taking infusion equipment is infusion pump as an example, infusion pump include tested EUT1 ..., tested EUTn ..., quilt
Survey EUTN, accordingly, electronic balance 140 include electronic balance 1 ..., electronic balance n ..., electronic balance N.Pass through each electronics day
The flat testing liquid exported to corresponding infusion equipment measures, and controller 120 acquires the data that different electronic balances measure
It is sampled and is calculated, obtain the test data of each infusion equipment, realized through accuracy automatic checkout system to different infusions
The detection of equipment, to improve the detection efficiency of system.
Above-mentioned accuracy automatic checkout system in order to better understand, below for carrying out flow velocity test to infusion pump,
Explanation is explained in detail in conjunction with attached drawing.
Traditional infusion pump flow rate test method is limited by balance range problem, can not achieve fully automatically long-time flow velocity
Test.Due to needing tester to be manually operated, tester must whole follow-up in test process.When longer between when tested
Tester is inevitably needed to sacrifice the personal time of having a rest to complete to test, needs are a large amount of to carry out if these are tested, right
Very big requirement is proposed in the time and efforts of tester.Moreover, the starting of test equipment and the starting of Devices to test are
Physically separate, test starting moment cannot be guaranteed that tester is basic synchronization to the two starting: when system is later than equipment
When starting, what system received is deficiency of data；When system starts earlier than equipment, system will receive unwanted number
According to these data need to carry out analysis judgement, and when flow velocity testing setup is minimum speed, assay balance estimates the normal number of read bit
When according to variation, it is also possible to reasonable data is regarded by system, thus, cause result to become unreliable, generates incorrect current curve
Figure.
It avoids excessively outranging for during the test, periodically removing injection needle manually by operator, mobile injection
The opportunity of needle has to correctly, otherwise probably due to the data obtained do not lead to the failure of an experiment entirely；And it is needed in moving process
There is stronger skill, because infusion pump continues working in test process, liquid continual can also be input into appearance
In device, once careless manipulation, will lead to the big ups and downs of balance data, so that stable data cannot be read, cause to test
Failure.Once in the case that test job amount is very big, being needed by the way of in shifts come complete in addition, experimental period is unfriendly
At test, the problem that working efficiency is low is caused.Even more serious is a bit, once operator's carelessness may cause excessive liquid
Body flows into container, because container capacity is limited, these extra liquid will be spilt into balance, may be damaged the day of high value
It is flat.
Above-mentioned accuracy automatic checkout system provided by the present application is based on GB9706.27 national standard, using automatic control
Principle design can be realized the full-automation that data sampling in test process, data monitoring, data processing and data are analyzed, together
When, accuracy automatic checkout system provides the exception in corresponding warning function prompting operator's test process.In addition, accuracy
Automatic checkout system also provides liquid timing diverter function, and guarantee will not outrange because of liquid causes the failure of an experiment and balance to damage
It is bad, testing efficiency can be effectively improved and effectively mitigate the work load of operator personnel.
The structural block diagram of accuracy automatic checkout system as shown in Fig. 2, the accuracy automatic checkout system control process
It is as follows:
As shown in table 1, accuracy automatic checkout system mainly includes 8 control commands, is carried out in entire test process
Control and monitoring.
| Serial number | Order | Content |
| 1 | Order 1 | Self-test order |
| 2 | Order 2 | Start test command |
| 3 | Order 3 | Complete test command |
| 4 | Order 4 | Printout order |
| 5 | Order 5 | Read electronic balance real time data |
| 6 | Order 6 | Send data to host computer |
| 7 | Order 7 | Data save order |
| 8 | Order 8 | Control infusion pipeline automatic switching control equipment |
Table 1
After installing infusion pump and its matched test equipment according to standard test requirements, by infusion pump and accuracy
Automatic checkout system is attached by data line, and accuracy automatic checkout system and electronic balance 140 are carried out by serial ports
Connection.Start accuracy automatic checkout system by key 110, starts to be attached self-test, controller 120 sends order 1 and arrives
Electronic balance 140 and infusion pump, if it is possible to collect normal returned data, then show that connection is normal, otherwise issue alarm and mention
Show, shows infusion pump connection failure or electronic balance connection failure.
When connection self-test is normal, controller 120 selects corresponding test pattern 1 to n (being shown in Table 2), and sets test
Cycle T, controller 120 issue start command 2, control infusion pump and electronic balance starts to work normally.
Table 2
Accuracy automatic checkout system sends 2 control infusion pump of order according to right by the data line between infusion pump
The flow velocity under mode is answered to start to work.After starting measurement, accuracy automatic checkout system sends order 5 by serial ports, reads electricity
The collected real time data of sub- balance 140, and 7 being saved data by order, while being upload the data to by order 6 upper
It is stored and processed in machine 190.
If the range of electronic balance 140 is enough to complete primary test, can through the above arrangement after, run to test always
Terminate；If balance range is not enough to complete once to test, second hour is completely being obtained by automatic switching control equipment 150
Test data after, infusion pipeline is switched to outside electronic balance 140, testing liquid is made not enter electronic balance 140, it is to be tested
Infusion pipeline is switched to electronic balance 140 again before terminating last hour, and restarts balance reading and obtains measurement data.
Stop infusion pump after being measured, the electronic balance data of 120 pairs of controller preservations carry out preservation processing, generate phase
Real-time flow rate, ascending curve and the flared curve answered, and test report is generated, while controller can be controlled by key 110
120, which issue order 4, prints test report with controlling printer 180.Wherein, ascending curve is after being started according to test
The measurement data of the first two hour and the last one hour obtain, and whether can analyze flow velocity according to ascending curve uniform, are weighed with this
Measure the quality of infusion pump.Flared curve is obtained according to second hour tested after starting and the measurement data of last hour.
The specific control flow of accuracy automatic checkout system is as shown in Figure 6.Wherein, judge whether the data of sampling close
Whether method, can be the obtained data of detection sampling has missing, or whether meets preset format etc..It is in process of self-test if defeated
In liquid pump or electronic balance connection failure or test process when there is data exception, communication abnormality, generate corresponding
Warning note.
Referring to Fig. 7, the calculating process of flow velocity test data is as follows: according to different test patterns and applicable product, root
A calculating cycle Tx is selected according to testing standard.
1, calculating cycle Tx is divided according to sampling interval t, there is a scale weight number in each sampling interval
(Mt), which is converted into volume number (Vt) according to density formula.
2. for each sampling interval t1 [n] (n=1,2 ..., Tx/t), average speed S1 [n]=(Vt of this period
[n]-Vt [n-1])/t, it asks error to be denoted as D1 [n] all S1 [n], chooses the maximum value MaxD1 and minimum M inD1 of error,
And it records.
3. for every two sampling interval t2 [n] (n=2 ..., Tx/t), average speed S2 [n]=(Vt of this period
[n]-Vt [n-2]) all S2 [n] are asked error to be denoted as D2 [n], choose the maximum value MaxD2 and minimum value of error by/2t
MinD2, and record.
4. and so on, sampling interval tm [n] (n=m ..., Tx/t) a for every m (m≤Tx/t), this period is averaged
All Sm [n] are asked error to be denoted as Dm [n], choose the maximum value of all errors by speed Sm [n]=(Vt [n]-Vt [n-m])/mt
MaxDm and minimum M inDm, and record.
5. the upper limit curve of all MaxD composition loudspeaker figures, the lower limit curve of all MinD composition loudspeaker figures, adding should
Average speed during calculating cycle Tx can then obtain the loudspeaker figure in the calculating cycle.
6. if being calculated according to above method second small calculating cycle Tx is second hour after test starts
When loudspeaker figure.If calculating cycle Tx is last hour of test, last hour is calculated according to above method
Loudspeaker figure.
Referring to Fig. 8, testing result deterministic process is as follows:
1. the absolute value of second hour flow velocity mean error is less than the limits of error, then second hour test result
Qualification, it is otherwise unqualified.The specific value of allowable error is not unique, can adjust, allow according to actual needs in the present embodiment
Error is 5%.
2. the absolute value of the flow velocity mean error of last hour is less than the limits of error, then last hour test knot
Fruit is qualified, otherwise unqualified.
3. if this test result is qualification, otherwise not second hour qualified with the test result of last hour
It is qualified.
Finally, the test result of each corresponding mode is equal after each mode of the test sample has been surveyed
It can be shown on display 170, and save to memory 120.It should be noted that, test different for infusion equipment type
The process of mode also corresponds to all differences.After choosing the type of equipment, system can be automatically according to corresponding user
Mode measures, and is also possible to be tested according to the mode that user is assigned to, and corresponding different mode is to infusion equipment not
The accuracy measurement for carrying out middling speed and low speed is depressed with background, obtains the measurement result under different mode.Under previous mode
Test result then continues the test of next mode in the range of error 5%, has test data under any one mode not
Qualified then stop, the test data under all modes is all qualified, then report is produced, according to the pattern exposure different background of setting
Depress the data of test different in flow rate, corresponding flow velocity profile, flared curve figure, and the whole knot for testing whether qualification
Fruit.
In addition, when need to only test an infusion pump, also using multiple electronic balances to the same infusion pump
It is tested, different balances is different from the positional relationship of infusion pump, and different background pressures is corresponded to this.It is defeated by control switching
Liquid pump exports testing liquid to different electronic balances, surveys according to the collected data to the flow velocity under infusion pump different mode
Examination can not have to ambulatory infusion pump, avoid operation error, be conducive to the raising of Measurement reliability and accuracy.
After the completion of all tests, according to the test data analysis obtained before as a result, judged according to standard it is qualified or not, from
It is dynamic to generate test report, and pass through 180 printed report of printer.
Referring to Fig. 4, the working principle and operating process of automatic switching control equipment 150 are as follows:
The infusion pipeline end of connection infusion pump EUT is connect with triple valve 159, the other two-way of triple valve 159, a-road-through
The measuring cup in piping connection to electronic balance 140 is crossed, enters the complementary tank 200 outside balance all the way.Two-way pipeline is blocked respectively
In the perfusion tube card slot for entering 150 both sides of automatic switching control equipment, the motor 152 in automatic switching control equipment 150 is connected to controller 120
RS232 serial port.
Controller 120 is judged according to balance range, test speed and test period, when balance range is enough to complete one
Secondary test, automatic switching control equipment 150 do not start；If balance range is not enough to complete once to test, after test starts
The first two hour is sent a command to by RS232 serial ports and is cut automatically with the last one hour before terminating, controller 120 is tested
Changing device 150 is driven by motor 152 and transmission mechanism 154, screw rod 156 is withstood toward the left side, then liquid can be made to pass through the right
Pipeline enter electronic balance 140.
After measurement starts two hours and before test one hour of end, the data of this period do not need to join
With test result calculations, therefore this time can send a command to automatic switching control equipment 150 by the RS232 serial ports of controller 120,
By the driving of motor 152 and transmission mechanism 154, screw rod 156 is withstood toward the right, then can make liquid by the pipeline on the left side into
Enter the complementary tank 200 outside balance.
The accuracy automatic checkout system of above-mentioned infusion equipment, operator only need to start the automatic detection system of accuracy
System sends enabled instruction from accuracy automatic checkout system to infusion equipment, and when test starting can be to avoid operator simultaneously
Start deviation caused by infusion equipment and accuracy automatic checkout system.It is realized by controller to infusion equipment and electronic balance
Carry out the automatic control of starting and data acquisition, the test in the case where the range of electronic balance cannot support current test pattern
When, the testing liquid that infusion equipment in sampling time period exports only is delivered to electronics by the spontaneous control automatic switching control equipment of controller
Balance is detected, to avoid liquid excessive and outrange, test process is participated in without artificial, effectively avoids operating because of personnel
Caused test error, high degree of automation, and improve the test accuracy of infusion equipment.
In one embodiment, a kind of transfusion system is provided, including infusion equipment, liquid-transport pipe-line and above-mentioned accuracy are certainly
Dynamic detection system.Infusion equipment connects liquid-transport pipe-line, and electronic balance is set to the delivery outlet of liquid-transport pipe-line, controller connection infusion
Equipment.Further, transfusion system may also include solution container, drop pot and injection needle.Solution container is used to contain testing liquid,
Solution container connects drop pot by pipeline, and drop pot connects the input side of infusion equipment by pipeline, and the outlet side of infusion equipment is logical
Cross liquid-transport pipe-line connection injection needle.Wherein, infusion equipment specifically can be infusion pump or syringe pump, and in the present embodiment, infusion is set
Standby is infusion pump.For the infusion pump of minimum speed operation, the required precision of electronic balance 140 is accurate to 5 decimals, injection needle
330 syringe needle (18G, 1.2mm, GB15811) is put into solution water horizontal line in the measuring cup of electronic balance 140 hereinafter, avoiding causing day
Flat to shake, measurement is inaccurate.
The solution to be measured of infusion equipment output is inputted in the measuring cup of electronic balance by injection needle, for electronic balance pair
Liquid carries out weight measurement, and feeds back weight data to controller.Controller cannot be supported currently to survey in the range of electronic balance
When flow velocity test under die trial formula, control automatic switching control equipment changes liquid flow direction in liquid-transport pipe-line, only allows in sampling time period
The testing liquid of infusion equipment output is delivered to electronic balance.
Above-mentioned transfusion system, operator only need to start accuracy automatic checkout system, by the automatic detection system of accuracy
Unite and send enabled instruction to infusion equipment, can start simultaneously to avoid operator when test starting infusion equipment and accuracy from
Deviation caused by dynamic detection system.By controller realize to infusion equipment and electronic balance carry out starting and data acquisition it is complete
Automation control, and in the flow velocity test under the range of electronic balance cannot support current test pattern, the spontaneous control of controller
The testing liquid that infusion equipment in sampling time period exports only is delivered to electronic balance and detected by automatic switching control equipment processed, from
And avoid liquid excessive and outrange, test process is participated in without artificial, test error caused by operating because of personnel is effectively avoided,
High degree of automation, and improve the test accuracy of infusion equipment.
In one embodiment, a kind of accuracy automatic testing method of infusion equipment is additionally provided, as shown in figure 9, packet
It includes:
Step S110: when receiving the test starting command of key transmission, the test condition stored in memory is obtained
Data carry out test pattern setting according to the test condition data of acquisition:.
Step S120: infusion equipment is controlled according to the test pattern of setting and electronic balance works, and in electronic balance
Range when cannot support the test under current test pattern, send switching control and instruct to automatic switching control equipment.Switching control
It instructs and the testing liquid that infusion equipment in preset sampling time period exports is delivered to electronics for controlling automatic switching control equipment
Balance.
Step S130: the weight data that acquisition electronic balance measurement obtains, and according to the weight data in sampling time period
Test data is calculated.
Accuracy of the specific embodiment of the accuracy automatic testing method of above-mentioned infusion equipment in above-mentioned infusion equipment
Detailed explanation is carried out in automatic checkout system, details are not described herein.
The accuracy automatic testing method of above-mentioned infusion equipment, the acquisition when receiving the test starting command of key transmission
The test condition data stored in memory carries out test pattern setting according to the test condition data of acquisition；According to setting
Test pattern controls infusion equipment and electronic balance work, and in the case where the range of electronic balance cannot support current test pattern
Test when, send switching control instruct to automatic switching control equipment, to control automatic switching control equipment for preset sampling time period
The testing liquid of interior infusion equipment output is delivered to electronic balance.The weight data that acquisition electronic balance measurement obtains, and according to
Test data is calculated in weight data in sampling time period.By carrying out starting and data to infusion equipment and electronic balance
The automatic control of acquisition, when the range of electronic balance cannot support the test under current test pattern, spontaneous control from
The testing liquid that infusion equipment in sampling time period exports only is delivered to electronic balance and detected by dynamic switching device, to keep away
To exempt from testing liquid excessively to outrange, test process is participated in without artificial, test error caused by operating because of personnel is effectively avoided,
High degree of automation, and improve the test accuracy of infusion equipment.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of accuracy automatic checkout system of infusion equipment, which is characterized in that including key, controller, memory, electronics
Its gentle automatic switching control equipment, the controller connect the key, the memory, the electronic balance and described cut automatically
Changing device is also used to connect infusion equipment；The electronic balance is set to the output for connecting the liquid-transport pipe-line of the infusion equipment
Mouthful, the automatic switching control equipment is set to the liquid-transport pipe-line；
The key is for sending test starting command to the controller；The automatic switching control equipment be used for receive it is described
The testing liquid of infusion equipment described in preset sampling time period output is conveyed when the switching control instruction that controller is sent
To the electronic balance；The electronic balance to the testing liquid of input for measuring to obtain weight data；
The controller obtains the test stored in the memory when receiving the test starting command that the key is sent
Condition data carries out test pattern setting according to the test condition data of acquisition；It is controlled according to the test pattern of setting described defeated
Liquid equipment and electronic balance work, and the test in the case where the range of the electronic balance cannot support current test pattern
When, it sends switching control and instructs to the automatic switching control equipment；The controller is also used to acquire the electronic balance and measures
The weight data arrived, and test data is calculated according to the weight data in the sampling time period.
2. accuracy automatic checkout system according to claim 1, which is characterized in that the automatic switching control equipment includes electricity
Machine, transmission mechanism, screw rod and perfusion tube card slot, the motor connect the controller and the transmission mechanism, the driver
Structure connects the perfusion tube card slot by the screw rod, and the perfusion tube card slot is set to the liquid-transport pipe-line；
The motor is instructed according to the switching control that the controller is sent, and the driver is controlled in the sampling time period
Structure drives the perfusion tube card slot mobile by the screw rod so that the testing liquid of infusion equipment output be delivered to it is described
Electronic balance.
3. accuracy automatic checkout system according to claim 1, which is characterized in that further include connecting the controller
Alarm；The controller is attached self-test operations when receiving the test starting command that the key is sent, and is connecting
The test condition data stored in the memory is obtained when self-test is normal, and test mould is carried out according to the test condition data of acquisition
Formula setting, and the alarm output prompt messages are controlled when connecting self-test exception.
4. accuracy automatic checkout system according to claim 1, which is characterized in that the controller is preset to be higher than
The frequency of sample frequency value reads the weight data of the electronic balance measurement, and is adopted after receiving weight data with preset
Sample frequency values carry out data acquisition.
5. accuracy automatic checkout system according to claim 1, which is characterized in that the test data includes real-time streams
Fast figure, ascending curve figure, flared curve figure and test result.
6. accuracy automatic checkout system according to claim 5, which is characterized in that the controller is according to the weight
The volume data in the sampling time period is calculated in data；It is obtained in the sampling time period not according to the volume data
With the flow rate error in the sampling interval；Maximum positive negative value of error is taken to generate in the sampling time period according to the flow rate error
Flared curve figure.
7. accuracy automatic checkout system according to claim 6, which is characterized in that if flow velocity in the sampling time period
The absolute value of mean error is respectively less than preset limits of error threshold value, then the test result is qualification.
8. accuracy automatic checkout system described in -7 any one according to claim 1, which is characterized in that the sample time
Section is the first two hour and last hour after test starts.
9. accuracy automatic checkout system described in -7 any one according to claim 1, which is characterized in that further include connection institute
State at least one of the display, printer and host computer of controller.
10. a kind of accuracy automatic testing method of infusion equipment characterized by comprising
When receiving the test starting command of key transmission, the test condition data stored in memory is obtained, according to acquisition
Test condition data carry out test pattern setting；
According to the test pattern of setting control infusion equipment and electronic balance work, and the range of the electronic balance cannot
When supporting the test under current test pattern, sends switching control and instruct to automatic switching control equipment；The switching control instruction is used
The testing liquid that infusion equipment described in preset sampling time period exports is delivered to institute in controlling the automatic switching control equipment
State electronic balance；
The weight data that the electronic balance measurement obtains is acquired, and is calculated according to the weight data in the sampling time period
To test data.
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