CN104075654A - Test system for dependent variables of high-speed small-target penetration gelatin body - Google Patents
Test system for dependent variables of high-speed small-target penetration gelatin body Download PDFInfo
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- CN104075654A CN104075654A CN201410145754.6A CN201410145754A CN104075654A CN 104075654 A CN104075654 A CN 104075654A CN 201410145754 A CN201410145754 A CN 201410145754A CN 104075654 A CN104075654 A CN 104075654A
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Abstract
The invention relates to a test system for dependent variables of a high-speed small-target penetration gelatin body. The test system comprises PVC hollow tubes, the gelatin body, strain gauges, a light source system, an image capture system, a data collection system and a data processing system, wherein two vertically-arranged strain gauges adhere to the outer surface of each PVC hollow tube, and a connection line is led out of the outer end of each stain gauge through a terminal block. Two or more PVC hollow tubes are solidified in the gelatin body and distributed parallel to each other and perpendicular to the bottom of the gelatin body, the connection lines of the strain gauges on the PVC hollow tubes are exposed out of the gelatin body, and installation surfaces of the strain gauges installed on the PVC hollow tubes are parallel. All the strain gauges are connected with the input end of the data collection system through the connection lines, and the output ends of the image capture system and the data collection system are connected with the data processing system. The test system is high in reliability, good in test accuracy and capable of being widely applied to the field of the test technology.
Description
Technical field
The strain measurement test system that the present invention relates to a kind of high speed small target penetration gelatin body, belongs to technical field of measurement and test.
Background technology
The strain measurement test system of traditional high speed small target penetration gelatin is as simulation bone at PVC hollow tubular of the inner placement of gelatin body, in the centre position of the outside surface of this root PVC hollow tubular, paste a slice foil gauge as sensor, measure in high speed small target penetration gelatin process the data that change in the inner dependent variable producing of gelatin body.But high speed small target is in the process of penetration gelatin body, the foil gauge that often can make to be pasted on PVC hollow tubular outside surface damages and causes obtaining the data of dependent variable; Simultaneously, the strain measurement test system of traditional high speed small target penetration gelatin body, due to the dispersiveness of high speed small target penetration position with lack the compensation of the test data that miscellaneous equipment obtains, only rely on the test data that a slice foil gauge obtains often can accurately not reflect that gelatin body is by the delta data of the dependent variable of penetration position.
Summary of the invention
The object of the invention is the dependent variable data in order to obtain reliably high speed small target penetration gelatin body, and improve the measuring accuracy of dependent variable, propose a kind of strain measurement test system of high speed small target penetration gelatin body.
The object of the invention is to be achieved through the following technical solutions.
The strain measurement test system of high speed small target penetration gelatin body of the present invention, comprises PVC hollow tubular, gelatin body, foil gauge, light-source system, image capturing system, data acquisition system (DAS), data handling system;
Light-source system is used for making gelatin body in pellucidity, is conducive to image capturing system and obtains the picture rich in detail that high speed small target moves in gelatin body;
Image capturing system is used for gathering the instantaneous velocity data of high speed small target penetration gelatin body;
Data acquisition system (DAS) is used for gathering the resistance change data of foil gauge output;
Data handling system becomes dependent variable delta data by resistance change data with instantaneous velocity data-switching;
On the outside surface of every PVC hollow tubular, be pasted with two foil gauges of arranging up and down, between two foil gauge centers, interval is greater than 50mm; The outer end of each foil gauge is by connection terminal outconnector; Two PVC hollow tubulars that are pasted with above foil gauge are set in and are shaped as in cubical gelatin body, it is parallel uniform that all PVC hollow tubulars are in gelatin body, and perpendicular to the bottom surface of gelatin body, the connecting line of the each foil gauge on every PVC hollow tubular is exposed outside gelatin body, and the foil gauge mounting plane of installing on all PVC hollow tubulars is parallel;
Each foil gauge is exposed to be connected with the input end of data acquisition system (DAS) at the external connecting line of gelatin;
Light-source system and image capturing system are separately positioned on the left and right sides of gelatin body, and the image acquisition direction of the direction of illumination of light-source system and image capturing system is all vertical with PVC hollow tubular;
The output terminal connection data disposal system of image capturing system, data acquisition system (DAS).
The course of work
The transmit direction of transmitter is vertical with the PVC hollow tubular in gelatin body, and the just installed surface to foil gauge on each PVC hollow tubular, transmitter transmitting high speed small target, make its penetration gelatin body, make the PVC hollow tubular in gelatin body produce strain, the foil gauge on PVC hollow tubular is to data acquisition system (DAS) output resistance delta data; Image capturing system gathers the instantaneous velocity data of target penetration gelatin simultaneously; Data acquisition system (DAS) and image capturing system respectively by the instantaneous velocity data transmission of the resistance change data that collect and target penetration gelatin to data handling system, data handling system becomes dependent variable delta data by resistance change data with the instantaneous velocity data-switching of target penetration gelatin body.
Beneficial effect:
The strain measurement test system of a kind of high speed small target penetration gelatin body that 1, the present invention proposes, owing to foil gauge being disperseed to be pasted on the PVC hollow tubular outside surface of more than one diverse location, can ensure in test process, in the impaired situation of certain a slice foil gauge, still can obtain the data of other foil gauge output, increase the reliability of dependent variable test;
The strain measurement test system of a kind of high speed small target penetration gelatin body that 2, the present invention proposes, disperses foil gauge to be pasted on the PVC hollow tubular outside surface of more than one diverse location, thereby has formed foil gauge array; The calculating of computer system, compare with traditional single foil gauge test data, utilize the test data of foil gauge array, can draw more accurately the delta data of high speed small target dependent variable to the inner generation of gelatin body in different penetrations position, thereby reduce the impact of the corresponding variable test precision of dispersiveness of high speed small target penetration position;
The strain measurement test system of a kind of high speed small target penetration gelatin body that 3, the present invention proposes, the instantaneous velocity data of high speed small target penetration in gelatin body have been obtained by image capturing system independently, as the compensation of foil gauge output data, by data handling system, the resistance change data of foil gauge output are become to dependent variable delta data with the instantaneous velocity data-switching of target penetration gelatin body.Compare by the dependent variable delta data obtaining with the computer simulation system under same test condition, the precision that the strain measurement test system of the new high speed small target penetration gelatin body proposing is measured dependent variable brings up to 15% by original 45%.
Brief description of the drawings
Fig. 1 is the strain measurement test system schematic diagram of high speed small target penetration gelatin body;
Fig. 2 is that foil gauge is at PVC hollow tubular outside surface paste position schematic diagram;
Fig. 3 is three PVC hollow tubulars schematic layout patterns in gelatin;
Wherein, 1-transmitter; 2-high speed small target; 3-gelatin body; 4-PVC hollow tubular; 5-foil gauge; 6-light-source system; 7-data acquisition system (DAS); 8-image capturing system; 9-data handling system; 10-connection terminal.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is elaborated.
Embodiment
The strain measurement test system of a kind of high speed small target penetration gelatin body of the present invention, as shown in Figure 1, comprises PVC hollow tubular 4, gelatin body 3, foil gauge 5, light-source system 6, image capturing system 8, data acquisition system (DAS) 7, data handling system 9;
Light-source system 6, for making gelatin body in pellucidity, is conducive to image capturing system and obtains image clearly;
Image capturing system 8 adopts high-speed camera, is used for gathering the instantaneous velocity data of target penetration gelatin;
Data acquisition system (DAS) 7 adopts the PXIe data collecting card of America NI company, is used for gathering the resistance change data of foil gauge output;
Data handling system 9 is the computer system of service data handling procedure, and resistance change data are become to dependent variable delta data with instantaneous velocity data-switching;
As shown in Figure 2, on the outside surface of every PVC hollow tubular, be pasted with two and arrange up and down foil gauge, between two foil gauge centers, be spaced apart 100mm; The outer end of each foil gauge is by connection terminal 10 outconnectors; As shown in Figure 3, three PVC hollow tubulars that are pasted with foil gauge are set in the cube gelatin body that is shaped as 400mm × 400mm × 400mm, triangular in shape parallel uniform in gelatin body, using gelatin body bottom surface as xy plane, three PVC hollow tubulars are respectively (300 at the subpoint coordinate of gelatin body bottom surface, 100,0), (100,200,0), (300,300,0); The connecting line of each foil gauge is exposed outside gelatin body, and the foil gauge mounting plane of installing on all PVC hollow tubulars is parallel;
Each foil gauge is exposed to be connected with the input end of data acquisition system (DAS) at the external connecting line of gelatin;
Light-source system and image capturing system are separately positioned on the left and right sides of gelatin body, and the system image acquisition direction of the direction of illumination of light-source system and image acquisition is all vertical with PVC hollow tubular; Light-source system is used for making gelatin body in pellucidity, is conducive to image capturing system and obtains image clearly;
The output terminal connection data disposal system of image capturing system, data acquisition system (DAS).
The course of work
As shown in Figure 1, the transmit direction of transmitter 1 is vertical with the PVC hollow tubular 4 in gelatin body 3, and the just installed surface to foil gauge on each PVC hollow tubular, transmitter 1 is launched high speed small target 2, make its penetration gelatin body 3, make the PVC hollow tubular in gelatin body produce strain, the foil gauge on PVC hollow tubular is to data acquisition system (DAS) output resistance delta data; Image capturing system gathers the instantaneous velocity data of target penetration gelatin simultaneously; Data acquisition system (DAS) and image capturing system respectively by the instantaneous velocity data transmission of the resistance change data that collect and target penetration gelatin to data handling system, data handling system becomes dependent variable delta data by resistance change data with the instantaneous velocity data-switching of target penetration gelatin body.
Claims (1)
1. the strain measurement test system of high speed small target penetration gelatin body, is characterized in that: comprise PVC hollow tubular, gelatin body, foil gauge, light-source system, image capturing system, data acquisition system (DAS), data handling system;
Image capturing system is used for gathering the instantaneous velocity data of target penetration gelatin;
Data acquisition system (DAS) is used for gathering the resistance change data of foil gauge output;
Data handling system becomes dependent variable delta data by resistance change data with instantaneous velocity data-switching;
On the outside surface of every PVC hollow tubular, be pasted with two and arrange up and down foil gauge, between two foil gauge centers, interval is greater than 50mm; The outer end of each foil gauge is by connection terminal outconnector; Two PVC hollow tubulars that are pasted with above foil gauge are set in and are shaped as in cubical gelatin body, it is parallel uniform that all PVC hollow tubulars are in gelatin body, and perpendicular to the bottom surface of gelatin body, the connecting line of the each foil gauge on every PVC hollow tubular is exposed outside gelatin body, and the foil gauge mounting plane of installing on all PVC hollow tubulars is parallel;
Each foil gauge is exposed to be connected with the input end of data acquisition system (DAS) at the external connecting line of gelatin;
Light-source system and image capturing system are separately positioned on the both sides of gelatin body, and the system image acquisition direction of the direction of illumination of light-source system and image acquisition is all parallel with PVC hollow tubular;
The output terminal connection data disposal system of image capturing system, data acquisition system (DAS).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145754.6A CN104075654A (en) | 2014-04-10 | 2014-04-10 | Test system for dependent variables of high-speed small-target penetration gelatin body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145754.6A CN104075654A (en) | 2014-04-10 | 2014-04-10 | Test system for dependent variables of high-speed small-target penetration gelatin body |
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| CN201410145754.6A Pending CN104075654A (en) | 2014-04-10 | 2014-04-10 | Test system for dependent variables of high-speed small-target penetration gelatin body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279085A (en) * | 2018-04-02 | 2018-07-13 | 中北大学 | A kind of array of pressure sensors and pressure wave test system |
| CN117308704A (en) * | 2023-11-28 | 2023-12-29 | 四川航天川南火工技术有限公司 | Digital test method for penetration depth of cutting cable energy-gathering jet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279085A (en) * | 2018-04-02 | 2018-07-13 | 中北大学 | A kind of array of pressure sensors and pressure wave test system |
| CN117308704A (en) * | 2023-11-28 | 2023-12-29 | 四川航天川南火工技术有限公司 | Digital test method for penetration depth of cutting cable energy-gathering jet |
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Application publication date: 20141001 |