CN1601517A - Data acquisition processing system of one-way stretcher - Google Patents
Data acquisition processing system of one-way stretcher Download PDFInfo
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- CN1601517A CN1601517A CN 200410073195 CN200410073195A CN1601517A CN 1601517 A CN1601517 A CN 1601517A CN 200410073195 CN200410073195 CN 200410073195 CN 200410073195 A CN200410073195 A CN 200410073195A CN 1601517 A CN1601517 A CN 1601517A
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Abstract
In the invention, force transducer is installed on holding brachial tentacle part of uniaxial stretcher for collecting time signal 1 by corresponding port 1 on data acquisition card. Longitudinal displacement transducer and longitudinal accurate displacement transducer are installed on two ends of test piece for collecting time signal 2, 4 by corresponding port 2, 4 on data acquisition card. Transverse displacement transducer is installed on broad side of test piece for collecting time signal 3 by corresponding port 3 on data acquisition card. Data process module processes the said collected data and real time display is provided. Comparing with prior art, the invention possesses features of raised accuracy and efficiency, visual experimental result and simple operation.
Description
(1) technical field under:
The present invention relates to the Computer Control Technology field, is a kind of data acquisition processing system of one-way stretcher.
(2) background technology:
The plate measuring mechanical property is exactly by the metal blank unilateral stretching, obtains the mechanical performance index of material, especially passes judgment on the parameter index of material Plastic Forming, thereby analyzes metal blank in different deformation conditions and the plastic yield performance under the mode of texturing.
The plate measuring mechanical property has very important significance to sheet material forming assessment tool.At present, the data acquisition of one-way stretcher mainly relies on mechanical hook-up to obtain, and data processing relies on artificial treatment.Like this, data acquisition not only real-time is poor, and accuracy is not high; Data processing is big by the artificial treatment subjective error, and efficient is low.In a word, the data Collection ﹠ Processing System of existing one-way stretcher is bigger to the error that the test result of plate mechanical property causes, and can't satisfy the requirement of Accurate Shaping.
(3) summary of the invention
The error that exists in one-way stretcher data acquisition and the processing procedure is big, efficient is low in order to solve, can't satisfy the deficiency that Accurate Shaping requires, and the present invention proposes a kind of data acquisition processing system of one-way stretcher.
The present invention includes one-way stretcher, industrial computer, data collecting card, multifunctional signal amplification instrument and force transducer, length travel sensor, transversal displacement sensor, vertical precise displacement sensor and corresponding system software.
The present invention is installed in clamping limb wrist on the one-way stretcher with force transducer, corresponding data capture card port one (acquisition time signal 1); Length travel sensor and vertical precise displacement sensor clamping are side by side distinguished corresponding data capture card port 2,4 (acquisition time signals 2,4) at the two ends of test specimen; Transversal displacement sensor clamping on the test specimen broadside, corresponding data capture card port 3 (acquisition time signal 3).
System software comprises system initialization, data acquisition, data processing, four modules of data presentation, by industrial computer control and calculating, has realized the digitizing of one-way stretcher data acquisition process, robotization, and its concrete steps are as follows:
(1) start-up routine carries out system initialization, and four of data collecting cards are gathered the port zero clearing, and the geometric parameter of input test specimen;
(2) one-way stretcher starts, and sends the acquisition controlling instruction by data acquisition module to data collecting card, carries out the driving of capture card and gathers the port selection, by capture card the analog quantity of choosing port is carried out digital conversion;
(3) log-on data processing module is carried out compound smothing filtering to the data of each port, then according to the acquisition time signal, selects different data processing policies;
(4) call data disaply moudle, data processed is presented on the screen in real time with curve form, and preserve respective value to specified file.
Because the present invention adopts computer control data acquisition, processing procedure, realized the computerize of one-way stretcher data acquisition and processing procedure, promptly realized real-time data acquisition, the efficient of data acquisition and accuracy and Data Processing in Experiment result's precision have been improved, can reflect experimental result intuitively, have convenient and practical, simple to operate characteristics.
(4) description of drawings
Accompanying drawing 1 is the data acquisition processing system of one-way stretcher hardware block diagram.
Accompanying drawing 2 is data acquisition processing system of one-way stretcher software architecture diagrams.
Accompanying drawing 3 is data acquisition processing system of one-way stretcher software flow block diagrams.
(5) embodiment
In concrete enforcement:
Present embodiment (Fig. 1) comprises that one-way stretcher, industrial computer, data collecting card, multifunctional signal amplify instrument, force transducer, length travel sensor, transversal displacement sensor and vertical precise displacement sensor.
One-way stretcher is by hydrostatic control, 10 tons of nominal pulls; Adopt industrial computer to carry out the data acquisition and the processing of unilateral stretching process; Data collecting card assigns in the industrial computer docking station, is provided with four and gathers port, carries out the collection and the digital conversion of sensor signal; Multifunctional signal amplifies instrument and is used for the amplification sensor signal; Force transducer is installed in the last clamping limb wrist of clamping test pieces, and corresponding data capture card port one is with acquisition time signal 1; Clamping is at the two ends of test specimen side by side by holing clip for length travel sensor and vertical precise displacement sensor, and corresponding data capture card port 2,4 respectively, with acquisition time signal 2,4; On the test specimen broadside, corresponding data capture card port 3 is with acquisition time signal 3 by the holing clip clamping for the transversal displacement sensor.
The operating software of present embodiment (Fig. 2) comprises system initialization, data acquisition, data processing, four modules of data presentation.Its operational process is:
Start-up routine carries out system initialization, and four of data collecting cards are gathered the port zero clearing, and the geometric parameter of input test specimen;
One-way stretcher starts, send the acquisition controlling instruction by data acquisition module to data collecting card, promptly the acquisition time signal carries out driving, the collection port of capture card and selects: if be acquisition time signal 1, then choose the collection port one, to the analog signals collection of pulling force and carry out the numeral conversion; If be acquisition time signal 2 or 4, then choose and gather port 2 or 4, to the analog signals collection of longitudinal stretching amount and carry out numeral and change; If be acquisition time signal 3, then choose and gather port 3, to the analog signals collection of transversal shrinkage amount and carry out numeral and change.
The log-on data processing module is at first carried out compound smothing filtering to each data of gathering port, and digital composite smothing filtering formula is:
Y(k)＝[X(2)+X(3)+…+X(N-1)]/(N-2)
＝1/(N-2)∑X(i)
X (1)≤X (2)≤X (3)≤... ≤ X (N) (3≤N≤14) selects different data processing policies then according to the acquisition time signal: if be acquisition time signal 1, then note down the first three groups data and calculate its slope; If be acquisition time signal 2 or 4, then relatively write down the minimum value of each input, the ess-strain of the minimum when being surrender; If be acquisition time signal 3, then write down the maximal value of each input, the test specimen length and width of correspondence, thick when being condition stress maximum.
Call data disaply moudle, draw corresponding segment of curve, be presented on the screen in real time, and preserve respective value to specified file according to data processed.
Claims (2)
1. a data acquisition processing system of one-way stretcher comprises system initialization, data acquisition, data processing, four modules of data presentation, and the operational process of this data handling system is:
A. start-up routine, carry out four of system initializations, data collecting card and gather the port zero clearing, and the geometric parameter of input test specimen;
B. one-way stretcher starts, and sends the acquisition controlling instruction by data acquisition module to data collecting card, carries out the driving of capture card and gathers the port selection, by capture card the analog quantity of choosing port is carried out digital conversion;
C. the log-on data processing module is carried out compound smothing filtering to the data of each port, then according to the acquisition time signal, selects different data processing policies;
D. call data disaply moudle, data processed is presented on the screen in real time with curve form, and preserve respective value to specified file.
2. data acquisition processing system of one-way stretcher as claimed in claim 1 is characterized in that force transducer is installed in clamping limb wrist on the one-way stretcher, corresponding data capture card port one; Clamping is at the two ends of test specimen side by side by holing clip for length travel sensor and vertical precise displacement sensor, and corresponding data capture card port 2,4 respectively; The transversal displacement sensor passes through the holing clip clamping on the test specimen broadside, corresponding data capture card port 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073195 CN1601517A (en) | 2004-10-27 | 2004-10-27 | Data acquisition processing system of one-way stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073195 CN1601517A (en) | 2004-10-27 | 2004-10-27 | Data acquisition processing system of one-way stretcher |
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| Publication Number | Publication Date |
|---|---|
| CN1601517A true CN1601517A (en) | 2005-03-30 |
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| CN 200410073195 Pending CN1601517A (en) | 2004-10-27 | 2004-10-27 | Data acquisition processing system of one-way stretcher |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048876A (en) * | 2014-06-24 | 2014-09-17 | 上海应用技术学院 | Multi-channel stress and strain data acquisition system and multi-channel stress and strain data method for unidirectional micro stretcher |
| CN112129293A (en) * | 2020-09-11 | 2020-12-25 | 上海应用技术大学 | System and method for acquiring motion path data of multi-channel spinning wheel of spinning machine |
-
2004
- 2004-10-27 CN CN 200410073195 patent/CN1601517A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048876A (en) * | 2014-06-24 | 2014-09-17 | 上海应用技术学院 | Multi-channel stress and strain data acquisition system and multi-channel stress and strain data method for unidirectional micro stretcher |
| CN112129293A (en) * | 2020-09-11 | 2020-12-25 | 上海应用技术大学 | System and method for acquiring motion path data of multi-channel spinning wheel of spinning machine |
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