CN101858843B - Computer-based rheology test control method and system - Google Patents
Computer-based rheology test control method and system Download PDFInfo
- Publication number
- CN101858843B CN101858843B CN2010101725062A CN201010172506A CN101858843B CN 101858843 B CN101858843 B CN 101858843B CN 2010101725062 A CN2010101725062 A CN 2010101725062A CN 201010172506 A CN201010172506 A CN 201010172506A CN 101858843 B CN101858843 B CN 101858843B
- Authority
- CN
- China
- Prior art keywords
- test
- rate
- data
- temperature
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a computer-based rheology test control method and a system. The method comprises the following steps that: the user starts rheological property testing software through a micro-computer at first during a rheological test and inputs relevant settings of a test scheme following prompts, and a rheology test device starts testing the first rate in a test rate sequence; test rate switching conditions are periodically judged during testing, if the conditions are not satisfied, the current rate is tested continuously, and if the conditions are satisfied, the test rate is switched to a next rate in the test rate sequence for testing; and the previous steps are repeated until all rates in the test rate sequence are tested, the test data are analyzed and processed, and the processing results are displayed on the software interface and are simultaneously stored. The invention realizes the automation of the rheology test, improves the accuracy of the pressure and temperature data, and has the advantages of simple operation and accurate testing.
Description
Technical field
The present invention relates to field of test instrument, especially the material flowing deformation characteristic test system.
Background technology
Flow graph is the indispensable instrument of material flowing deformation characteristic test, is widely used in the technical research and the analysis in fields such as plastics, petrochemical industry, earth, blood.By the principle of work difference, flow graph can be divided into capillary rheometer, torque rheometer and rotational rheometer etc.Capillary rheometer is because range of shear rate broad thereby most widely used.
Application number is that 200810143934.5 Chinese patent has been introduced a kind of rheological behavior of polymer composite material method of testing and device thereof, it can measure the rheological behaviour of the extrusion molding process of polymer composites under the physical field invigoration effect, kapillary extrusion, process of injection molding, goes back the rheological behaviour of energy measurement polymer composites when processing conditions and parameter change by specific program.
But, foregoing invention does not realize the robotization of rheological characteristics test, the user of service need operate a large amount of professional switches and instrument, do not realize the real-time preservation of magnanimity measurement data in the experimentation, switch test speed neatly, in the test process temperature controlling point on the barrel rather than on tested sample, influenced the precision of material flowing deformation characteristic test.
Summary of the invention
The object of the present invention is to provide a kind of method and system of finishing the material flowing deformation characteristic test by computer control capillary type rheological measurement device automatically, make easy and simple to handle, test condition (as speed, the temperature) precise control of rheometer test, finish the collection and the processing of test data automatically, thereby realize robotization, the precise treatment of rheometer test.
The objective of the invention is to be achieved through the following technical solutions:
A kind of control method of computer based rheometer test is used for the capillary type rheological measurement device, comprises the steps:
A), at first accept user's input from software interface, control mode that preservation probe temperature, test rate sequence, preheating time, test rate switch and handover trigger value are in internal memory, wherein probe temperature is meant the temperature of sample in the barrel, and the control mode that test rate switches comprise limiting time, limit plunger rod displacement, limit 4 kinds of fluctuation range, the manual switchovers of real-time pressure measurement data, the handover trigger value is the threshold values of corresponding conditions under the variety of way;
B), then carry out the test under first speed in the test rate sequence, and preserve test data;
C), carry out the judgement of " test rate switch control mode " specified switching condition, continue the test under the present rate if condition does not satisfy;
D), after switching condition satisfies, switch test speed to next speed in the test rate sequence is tested, and preserves test data;
E), repeat the test under whole speed in finishing the test rate sequence of C, D step;
F), carry out analysis, the processing of test data, and result is presented on the software interface, preserve result simultaneously.
A kind of material flowing deformation characteristic test system of realizing above-mentioned control method, it comprises microcomputer, rheological characteristics testing software, data acquisition card, Programmable Logic Controller and capillary type rheological measurement device; Wherein, microcomputer is communicated by letter with data acquisition card, Programmable Logic Controller by standard interface, and data acquisition card is connected with pressure transducer, temperature sensor, displacement transducer respectively, and Programmable Logic Controller is connected with motor, well heater respectively; Described rheological characteristics testing software comprises with lower module:
A), instrument action control module: from software interface accept the instruction back by the standard computer communication interface motor just change, reverse, stop, rate information is handed down to Programmable Logic Controller, realize control with this to plunger rod motion in the rheology test process, well heater power on, outage, temperature information be handed down to Programmable Logic Controller, realizes temperature control with this;
B), experimental program is provided with module: after accepting user's input from the software operation interface, control mode that preservation probe temperature, test rate sequence, preheating time, test rate switch and handover trigger value are in internal memory;
C), test process control module: according to experimental program experiment setting value in the module is set, calls instrument action control module drive plunger rod, well heater carries out test action by the mode of expection;
D), signal is gathered and processing module in real time: obtain temperature, pressure, the displacement measurement signal that data acquisition card transmits up by the standard computer communication interface, and with they real-time preservations, find the solution through signal filtering, unit conversion, rheological model simultaneously, draw real-time pressure, speed and viscosity results, and current pressure, speed, the temperature measuring data of demonstration in real time supplies the usertracking analysis on software interface.
That the present invention has is easy and simple to handle, the characteristics of test condition (as speed, temperature) precise control; Because having introduced speed, the present invention switches robot brain system, reduced the pressure data measured deviation that artificial reading causes, improved the accuracy of pressure data, the present invention simultaneously is improved to the probe temperature reference mark on the tested sample by barrel (conventional temperature control point), has further promoted the accuracy of material flowing deformation characteristic test.
Description of drawings
Fig. 1 is a control method process flow diagram of the present invention.
Fig. 2 is a material flowing deformation characteristic test system structural representation of the present invention.
Among the figure: 1, microcomputer; 2, Programmable Logic Controller; 3, data acquisition card; 4, capillary type rheological measurement device; 5, barrel; 6, plunger rod; 7, capillary die; 8, pressure transducer; 9, temperature sensor; 10, displacement transducer; 11, motor; 12, well heater.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Carry out rheometer test, the user need at first open instrument power source, opens microcomputer 1.
Behind microcomputer 1 startup rheological characteristics testing software, the user by the related setting value of prompting input experimental program, comprises control mode, handover trigger value that probe temperature, preheating time, test rate sequence, test rate switch on the interface of rheological characteristics testing software.Wherein the control mode of test rate switching has following four kinds to supply the selected one of user: the one, and the used time surpasses the time of user's appointment in " handover trigger value " under the current test rate, the 2nd, current test rate lower prop stopper rod displacement surpasses the length of user's appointment in " handover trigger value ", the 3rd, the pressure signal amplitude of variation that records in real time is less than the pressure surge value of user's appointment in " handover trigger value ", and the 4th, the user has manually issued instant switching command from software in the test process.Each parameter all has a system default value, and the control mode system default that switches as test rate is exactly the 4th a kind of mode.The test rate sequence is perhaps calculated by Automatic Program after importing the upper limit, lower limit, number on the interface by input one by one on software interface.
After finishing experimental program and being provided with, the user clicks the beginning test command, the probe temperature that the test process control module is set according to the user passes on well heater 12 to power on, heat the target temperature value information, well heater 12 startup work in view of the above by calling the instrument action control module to Programmable Logic Controller 2; Simultaneously, the test process control module starts the software timing, surpass the temperature retention time of user's setting when timing time after, the test process control module call the instrument action control module to Programmable Logic Controller 2 pass on that motor 11 are just changeing, first rate information in the test rate sequence, motor 11 is the test under drive plunger rod 6 first speed of descending beginning in view of the above; The test process control module starts a loop program and judges whether the condition that triggers the test rate switching satisfies, converting motor 11 speed are to next test rate if condition satisfies, and wherein trigger condition is appointed as one of displacement, the pressure signal amplitude of variation of time span, plunger rod, current order of user by the user in experimental program is provided with; Under the control of test process control module, capillary type rheological measurement device 4 is finished all test actions of rate value in the test rate sequence one by one, thereby realizes the robotization of test action.
Issue in the test rate sequence in first speed in the test process control module, signal is gathered in real time with processing module and is started.It receives the measuring-signal of pressure transducer 8, displacement transducer 10, temperature sensor 9 from data acquisition card 3 by standard computer communication interface such as USB interface, at first they are kept in the memory headroom of queue structure's form, the data of taking out in this queue data structure in the program of another executed in parallel write external memory such as hard disk then, prepare against experiment Analysis afterwards, do not influence the real-time response performance of material flowing deformation characteristic test system when having realized preserving mass data; Simultaneously, find the solution, draw real-time pressure, speed and viscosity results, show in real time that on software interface current pressure, speed, temperature measuring data supply usertracking to analyze experimentation and experimental detail through signal filtering, unit conversion, rheological model.
In sum, rheology test experiments operation steps has under system of the present invention:
One, opens instrument power source, start microcomputer 1;
Two, operation rheological characteristics testing software;
Three, in the rheological characteristics testing software, configure experimental program such as probe temperature, shear rate;
Four, click the beginning test command;
Five, check test result after the wait experiment is finished automatically.
This computer based material flowing deformation characteristic test system has been realized the robotization of rheological characteristics test process.
Aspect temperature survey, existing rheometer test equipment all is the control barrel temperature, and just temperature sensor 9 inserts in the barrels 5 but can not pass the barrel wall and thrusts in the sample.Find that through contrastive test when the temperature of barrel reached 200 degrees centigrade, the sample actual temperature was about 185 degrees centigrade.The present invention passes barrel 5 walls with temperature sensor 9 and thrusts in the cavity in view of the above, directly contacts with sample, thereby reduces temperature deviation, has improved the accuracy of material flowing deformation characteristic test.
Claims (5)
1. the control method of a computer based rheometer test is used for the capillary type rheological measurement device, it is characterized in that comprising following steps:
A), at first accept user input, preserve control mode that probe temperature, test rate sequence, preheating time, test rate switch and handover trigger value in internal memory from software interface;
B), then carry out the test under first speed in the test rate sequence, and preserve test data;
C), carry out the judgement of " test rate switch control mode " specified switching condition, continue the test under the present rate if condition does not satisfy;
D), after switching condition satisfies, switch test speed to next speed in the test rate sequence is tested, and preserves test data;
E), repeat the test under whole speed in finishing the test rate sequence of C, D step;
F), carry out analysis, the processing of test data, and result is presented on the software interface, preserve result simultaneously.
2. the control method of a kind of computer based rheometer test according to claim 1, the control mode that it is characterized in that described test rate switching are any one in following four kinds of modes:
The one, the current following time spent of test rate surpasses user's preassigned time in the handover trigger value;
The 2nd, current test rate lower prop stopper rod displacement surpasses user's preassigned length in the handover trigger value;
The 3rd, the pressure data amplitude of variation that records in real time is less than user's preassigned pressure surge value in the handover trigger value;
The 4th, the user has manually issued instant switching command from software.
3. the control method of a kind of computer based rheometer test according to claim 1, it is characterized in that described test data at first is kept in the memory headroom of queue structure's form, take out data in this formation with the program of another executed in parallel then and write the external memory operation, do not influence the real-time response performance of rheometer test process when having realized preserving time, displacement, the pressure data of magnanimity.
4. the control method of a kind of computer based rheometer test according to claim 1 is characterized in that described probe temperature is the temperature of sample in the barrel.
5. the realization test macro of " a kind of control method of computer based rheometer test " according to claim 1, it is characterized in that: it comprises microcomputer (1), rheological characteristics testing software, Programmable Logic Controller (2), data acquisition card (3) and capillary type rheological measurement device (4); Wherein, microcomputer (1) is communicated by letter with data acquisition card (3), Programmable Logic Controller (2) by standard interface, data acquisition card (3) is connected with pressure transducer (8), temperature sensor (9), displacement transducer (10) respectively, and Programmable Logic Controller (2) is connected with motor (11), well heater (12) respectively; Described rheological characteristics testing software comprises with lower module:
A), instrument action control module: from software interface accept the instruction back by the standard computer communication interface motor (11) just change, reverse, stop, rate information is handed down to Programmable Logic Controller, realize control with this to plunger rod (6) motion in the rheology test process, well heater (12) power on, outage, temperature information be handed down to Programmable Logic Controller (2), realizes temperature control with this;
B), experimental program is provided with module: after accepting user's input from the software operation interface, control mode that preservation probe temperature, test rate sequence, preheating time, test rate switch and handover trigger value are in internal memory;
C), test process control module: according to experimental program experiment setting value in the module is set, calls instrument action control module drive plunger rod (6), well heater (12) carries out test action by the mode of expection;
D), signal is gathered and processing module in real time: obtain temperature, pressure, the displacement measurement signal that data acquisition card (3) transmission comes up by the standard computer communication interface, and with they real-time preservations, find the solution through signal filtering, unit conversion, rheological model simultaneously, draw real-time pressure, speed and viscosity results, and current pressure, speed, the temperature measuring data of demonstration in real time supplies the usertracking analysis on software interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101725062A CN101858843B (en) | 2010-05-14 | 2010-05-14 | Computer-based rheology test control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101725062A CN101858843B (en) | 2010-05-14 | 2010-05-14 | Computer-based rheology test control method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858843A CN101858843A (en) | 2010-10-13 |
| CN101858843B true CN101858843B (en) | 2011-10-19 |
Family
ID=42944869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101725062A Expired - Fee Related CN101858843B (en) | 2010-05-14 | 2010-05-14 | Computer-based rheology test control method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101858843B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9002973B2 (en) * | 2011-10-21 | 2015-04-07 | Fisher Controls International Llc | Delayed publishing in process control systems |
| CN103900904B (en) * | 2014-04-28 | 2016-01-20 | 中国工程物理研究院核物理与化学研究所 | A kind of neutron in-situ mechanical loading system |
| CN105784479B (en) * | 2016-01-05 | 2018-05-18 | 山东科技大学 | A kind of processing method of rubber grain concrete triaxial compression test data |
| CN109728978B (en) * | 2019-01-29 | 2023-04-07 | 中国航空无线电电子研究所 | AFDX (avionics full Duplex switched Ethernet) switch line speed control capability test method considering clock drift |
| CN111141640B (en) * | 2019-12-02 | 2023-04-25 | 大连北方分析仪器有限公司 | Grease similar viscosity measuring device |
-
2010
- 2010-05-14 CN CN2010101725062A patent/CN101858843B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101858843A (en) | 2010-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858843B (en) | Computer-based rheology test control method and system | |
| CN1292887C (en) | Monitoring device for injection forming machine | |
| CN103777627A (en) | Batch process online-monitoring method based on small number of batches | |
| CN203335070U (en) | Multifunctional oil displacement physical simulation device | |
| CN101637711B (en) | Method and device for efficiently controlling temperature of reaction kettle | |
| CN103135455A (en) | Systems and methods for process control including process-initiated workflow | |
| CN109239378B (en) | LabVIEW-based static high-voltage experimental data acquisition system and acquisition method | |
| CN101387595B (en) | Full automatic gel test machine and use thereof | |
| CN105818346B (en) | Measuring apparatus | |
| CN100371698C (en) | Method and device for real time testing electric cylinder dynamic data | |
| CN104458240A (en) | Device and method for testing spring mechanical property | |
| CN201539468U (en) | Hydraulic motor test stand automatic measure and control device | |
| CN107236862B (en) | A kind of sinter bed temperature predicting method based on logarithm normal distribution function | |
| CN104808961B (en) | The scripting adjusting method of display interface module parameter | |
| JP3761429B2 (en) | Resin evaluation method and apparatus using injection molding machine | |
| CN107379463B (en) | A kind of injection moulding machine mould open final position control method and system | |
| CN206974735U (en) | A kind of sampler suitable for analytical instrument | |
| CN103949293B (en) | Liquid metering equipment pipetting instruction parameter rapid setting system and method | |
| CN202195978U (en) | Full-automatic measurement and control device for material testing machine | |
| CN203964970U (en) | A kind of high precision micro quantitative instrument | |
| CN104049220A (en) | Automatic voltage regulator and control method thereof | |
| CN101022566A (en) | Analogue video signal processing circuit testing method | |
| CN204602016U (en) | A kind of multi-functional chemical liquid dispensing device | |
| CN102323498B (en) | Multi-stage segmented high-precision data sampling method | |
| US20180285153A1 (en) | Managing a microfluidic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20140514 |