JP2008197065A - Graphic display for test result - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material testing machine allowing optimum detail display in response to a processing item from a graph displaying a test result, even without sufficient knowledge about the testing machine and without skill in an operation for a device. <P>SOLUTION: This material testing machine is provided with: a distance calculation part 26 for calculating a distance between a display position for displaying a calculation result of the processing item on the graph C, and an indication position 31 for a pointing device, on a screen of a display 3; and a detail display method storage part 24 for storing a manner of the detail display in every of the processing items while a determination part 27 determines whether the found distance is within a preset distance or not, and; wherein the optimum detail displays is always performed as to the processing item, by executing automatically the detail display as to the processing item, when the indication position 31 for the pointing device approaches within the distance with respect to the display position for displaying the calculation result of the processing item. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a graph display device for test results, and more particularly to a graph display device for displaying test results and the like of a material tester, an analyzer, etc. in a graph.

  2. Description of the Related Art In general, a material testing machine and an analysis apparatus are known which have a function of storing data under test or analysis (hereinafter referred to as test data) every moment and displaying the data in a graph. For example, in a material testing machine, when performing a tensile test, the test force (load) acting on the test piece is measured with a load cell, and the displacement of the load mechanism is detected with a displacement meter. Are amplified and digitized and stored, and the test force-displacement curve is graphically displayed on the display using each data (see, for example, Patent Document 1).

  In addition, the material testing machine normally stores calculation methods related to preset processing items such as proof stress points from the test force and displacement data collected and stored during the test. Is displayed on the graph by plotting or the like.

From this graph display, for example, when evaluating a processing item focused on by an operator such as a strength point, conventionally, the strength point (calculation result) on the graph and its associated coefficient, elastic modulus, pass / fail criterion (upper) The area including parameters such as (lower limit) is specified by the operator operating the pointing device such as a mouse, judging from the graph shape, and the detailed display of the area, specifically, the enlarged display of the graph is performed. . Further, when it is difficult to specify the area only from the shape of the graph, the enlarged area is determined after confirming the value of the corresponding parameter, for example, the load value or the elongation, by the parameter setting function.
Japanese Patent Laid-Open No. 11-281549

  By the way, in the method of enlarging and displaying the required area corresponding to the conventional processing item from the test result graph as described above, the operator basically determines the area to be enlarged from the graph shape. Knowledge about testing is essential. In addition, if it is not possible to determine from the graph shape, it is necessary to determine the area by checking the value of parameters such as the load, etc. However, since the relevant parameters differ for each processing item, the area can be determined reliably. In order to become such, it is necessary for the operator to become familiar with the operation.

  The present invention has been made in view of such a situation, and even if the knowledge about the test is poor or the person is not familiar with the operation of the apparatus, the optimum detailed display corresponding to the processing item from the graph representing the test result It is an object of the present invention to provide a graph display device of test results that can be performed.

  In order to solve the above-described problems, the test result graph display device of the present invention includes a data storage means for storing test data collected every moment during the test, and processing items set in advance using the test data. A calculation method storage means for storing a calculation method relating to the display, a display processing means for displaying a graph based on the test data on the display, and a calculation result of the processing item on the graph, and the display by a pointing device In the test result graph display device provided with the indicated position detecting means for detecting the indicated position on the screen, the distance between the indicated position on the screen of the pointing device and the display position of the calculation result of the processing item is calculated. Discriminating to determine whether or not the distance calculation means and the calculated distance are within a preset distance If the indicated position is close to the display position of the calculation result of the processing item within the distance based on the step and the determination result, the graph area related to the processing item is stored in the detailed display method storage means in advance. It is characterized by having a display control means for displaying details based on a display method based on the contents that are displayed (claim 1).

  Here, in the present invention, a plurality of types of the processing items are set, and the detailed display stored in the detailed display method storage means has a configuration defined for each processing item (Claim 2). It can be suitably employed.

  The present invention is configured to automatically perform detailed display of a processing item by bringing the pointing position (display position) of a pointing device such as a mouse close to the display position of the calculation result of the processing item on the graph. So, we are going to solve the problem.

  That is, for example, when paying attention to the strength on the test force-displacement curve in a tensile test, the graph area related to the strength is automatically displayed in detail simply by bringing the pointing device closer to the strength point displayed on the graph by calculation. Is done. Therefore, the operator can always display the optimum details without deciding the area to be displayed in detail or the enlargement magnification by himself / herself.

  In addition, a plurality of processing items are usually set. In that case, it is preferable to set the display method for each processing item as in the invention according to claim 2, and as the display method, In addition to the enlarged display area, display methods such as auxiliary line display and broken line / scatter chart are set for each item, and detailed display is performed based on the display method corresponding to the automatically specified item. More preferably.

  According to the present invention, the details of the graph area automatically associated with the processing item can be automatically obtained by merely bringing the pointing device pointing position close to the calculation result of the processing item on the graph created and displayed based on the test data. Since the display is performed, it is possible to reliably evaluate the test result even by an operator who has little knowledge about the test and is unfamiliar with the operation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of an embodiment in which the present invention is applied to a material testing machine, and FIG. 2 is a block diagram conceptually showing functions related to data processing and display control in the control device 2.

  The testing machine main body 1 has a structure in which two screw rods 12a and 12b are vertically and rotatably supported with respect to the table 11, and both end portions of the crosshead 13 are supported by the screw rods 12a and 12b via nuts. The screw rods 12a and 12b are rotated by driving of the driving device 15 mainly including a motor, and the cross head 13 is moved up and down.

  The test piece W is used for the test in a state where both ends thereof are gripped by grippers 14 a and 14 b provided on the upper surface of the table 11 and the lower surface of the crosshead 13, and the test is performed by raising the crosshead 13. A tensile load is applied to the piece W.

  The upper gripping tool 14b is attached to the crosshead 13 via the load cell 16, and the load cell 16 detects the momentary test force (tensile load) acting on the test piece W during the test. Further, the displacement of the cross head 13 due to the driving of the driving device 15 is detected by the displacement meter 17 every moment. Furthermore, an extensometer 18 is attached to the test piece W, and the extensometer 18 detects the elongation of the test piece W every moment.

  Outputs of the load cell 16, the displacement meter 17, and the extensometer 18 are taken into the control device 2. The control device 2 is mainly a personal computer and its peripheral devices, includes an amplifier and an A / D converter for amplifying the outputs of the load cell 16, the displacement meter 17 and the extensometer 18, and includes a motor driver of the drive device 15 and the like. It is out. The control device 2 is connected to a display 3 for displaying the following graphs and the like, and an operation unit 4 including a keyboard 41 and a mouse 42 for giving various commands. The personal computer is installed with a program for executing an operation as conceptually shown in a block diagram for each function in FIG.

  Now, referring to FIG. 2, a case of displaying a load-displacement graph as an example of a method of processing test data and a method of displaying a graph of test results in the embodiment of the present invention when performing a tensile test will be described. This will be described in detail below.

  The outputs of the load cell 16 and the displacement meter 17 under test are digitized and stored in the test data storage unit 21 after being amplified. The display processing unit 22 displays a graph based on the test data stored in the test data storage unit 21. In this example, the display processing unit 22 constructs a test force-displacement curve using the test force and displacement data, and displays it on the display 3. To do.

  Each calculation method for a plurality of processing items such as proof stress and breaking point is stored in advance in the calculation method storage unit 23. The calculation result for each processing item is sent to the display processing unit 22. In the display processing unit 22, as shown in a graph display example in FIG. 3, the calculation results, for example, the proof stress point P, the breaking point R, and the intermediate point M thereof are plotted on the test force-displacement curve C described above. To display together.

Further, a detailed display method is determined in advance for each of the above processing items, and each detailed display method is stored in the detailed display method storage unit 24. For example, FIG. 4 shows a detailed display of the proof stress. In this example, in the test force-displacement curve C, a predetermined region centered on the proof stress calculated using the test result is enlarged and displayed, and at the same time, the line E representing the elastic modulus and the proof stress 0 are used. The line S _0.2 representing 2% permanent strain is displayed, and the calculated proof stress value, coefficient (percentage of permanent strain for proof stress calculation), elastic modulus, pass / fail judgment results and upper and lower limit values are numerically displayed. Table T to be displayed is also displayed.

  The designated position detection unit 25 detects the designated position by the mouse 42 on the screen of the display 3, that is, the position of the pointer on the screen. The detection result is taken into the distance calculation unit 26, and the position of each plot corresponding to the calculation result of each processing item on the test force-displacement curve constructed based on the above-described test result and displayed on the display unit 3 is displayed. It is used for the calculation of the distance. Then, the calculation result of the distance is taken into the determination unit 27, and it is determined whether or not the calculated distance is within a preset distance. When the indicated position by the mouse 42 approaches the plot position corresponding to the calculation result of one of the processing items within the preset distance, it is stored in the detailed display storage unit 24 described above. Of each detail display method, a detail display method regarding the corresponding processing item is sent to the display processing unit 22, and a detailed display regarding the processing item is displayed on the display 3.

  That is, the operator simply operates the mouse 42 to bring the position of the pointer closer to the calculation result for each processing item represented by the plot on the test force-displacement curve C representing the entire test. A detailed display regarding the corresponding process item is automatically displayed.

  A display example of the display 3 is shown in FIG. This example shows a state in which a detailed display regarding the proof stress is performed. That is, the display 3 displays the graph shown in FIG. 3 in which the test force-displacement curve C of the entire test is plotted along with plots corresponding to the respective processing items in one window W1 and in another window W2. The detailed display shown in FIG. 4 regarding the proof stress is performed. In order to display the detail regarding the yield strength on the window W2, it is only necessary to bring the position of the pointer 31 of the mouse 42 closer to the plot P of the yield strength of the window W1 within a specified distance.

  Therefore, according to the above-described embodiment of the present invention, the operator can simply move the pointer 31 close to the plot of the desired processing item by operating the mouse 42 on the window W1, and the optimum details related to each processing item can be obtained. Display will be performed, and accurate evaluation can always be performed for each processing item based on the test result even if the knowledge of the test is poor or the user is not familiar with the operation.

  Here, in the above description, only the detailed display regarding the proof stress is shown, but it is only necessary to store the optimal detailed display for each processing item for other processing items such as the break point and the intermediate point. In this case, in addition to the enlarged display area of the test force-displacement curve C for each processing item, it is preferable to set the enlargement magnification to an optimum magnification for displaying each processing item in detail.

  Further, in the above embodiment, the test force-displacement curve is displayed as a whole out of the test results of the tensile test by the material testing machine, and the display method of each processing item has been described. Needless to say, the present invention can also be applied to other tests using a material testing machine. Furthermore, it goes without saying that the present invention can also be applied to display of test (analysis) results other than the material testing machine, for example, by an analyzer.

1 is an overall configuration diagram of an embodiment in which the present invention is applied to a material testing machine. It is a block diagram which represents notionally the function regarding the data processing and display control in the control apparatus of embodiment of this invention. It is explanatory drawing of the example of the graph display of the whole test in embodiment of this invention. It is explanatory drawing of the example of the detailed display regarding proof stress in embodiment of this invention. It is explanatory drawing of the example of a display on the display in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Test machine main body 11 Table 12a, 12b Screw rod 13 Cross head 14a, 14b Grasp 15 Drive device 16 Load cell 17 Displacement meter 18 Extensometer 2 Control device 21 Test data storage part 22 Display processing part 23 Calculation method storage part 24 Detailed display Method storage unit 25 Pointed position detection unit 26 Distance calculation unit 27 Discrimination unit 3 Display 31 Pointer 4 Operation unit 41 Keyboard 42 Mouse C Test force-displacement curve E Elasticity modulus line M Intermediate point P Strength point R Break point S _0.2 0.2% permanent strain line T Table W1, W2 Window

Claims (2)

Data storage means for storing test data collected every moment during the test, calculation method storage means for storing a calculation method related to a processing item set in advance using the test data, and the test data on the display A test result comprising a display processing means for displaying a graph based on the display processing means for displaying the calculation result of the processing item on the graph, and a pointing position detecting means for detecting a pointing position on the screen of the display by a pointing device In the graph display device of
Distance calculation means for calculating the distance between the indicated position on the screen of the pointing device and the display position of the calculation result of the processing item, and whether or not the calculated distance is within a preset distance Based on the determination result, when the indicated position is close to the display position of the calculation result of the processing item within the above distance, the graph area related to the processing item is displayed in detail in advance. A test result graph display device comprising display control means for displaying details based on a display method based on contents stored in a storage means.   The test result graph according to claim 1, wherein a plurality of types of the processing items are set, and the detailed display stored in the detailed display method storage means is determined for each processing item. Display device.

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