CN101261245A - Defective rheid pyromagnetic collection and test system - Google Patents
Defective rheid pyromagnetic collection and test system Download PDFInfo
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- CN101261245A CN101261245A CNA2008100310981A CN200810031098A CN101261245A CN 101261245 A CN101261245 A CN 101261245A CN A2008100310981 A CNA2008100310981 A CN A2008100310981A CN 200810031098 A CN200810031098 A CN 200810031098A CN 101261245 A CN101261245 A CN 101261245A
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Abstract
The invention discloses a pyromagnetic effect collection and test system of rheological bodies with defects, which includes a sensor group, thermal phases, a synchronous collection device and a power source, wherein, the sensor group is connected with a stepper motor drive mechanism and a PC data collection system. The sensor group includes 66 SS495 linear hall sensors which have 8 multiplied by 8 matrix arrangement on a detection plane, and uses three one-out-of-eight multiway switches with eight alternatives as a control switch of positive and negative power sources and output signals. Each group of eight sensors are connected as a three dimensional matrix according to columns, rows and the direction of 45 degrees. The pyromagnetic effect collection and test system of rheological bodies with defects provides multiple test methods and measures for the material damage mechanism of rheological bodies with defects.
Description
Technical field
The present invention relates to investigation of materials and fields of measurement, specifically is a kind of defective rheid pyromagnetic collection and measuring system.
Technical background
Contain defective rheology object and crack propagation process can occur under external load function, the wherein said defective rheology object that contains is meant that its inside contains the object of micropore hole, micro-crack or other defective.This type objects is subjected to external applied load (as tension) and does the time spent, and internal defects can constantly be expanded along with the increase of tension.Along with the increase of plastic yield and the generation of distortion heat, in crack propagation process, will follow a faint thermic magnetic effect.Even the non-ferromagnetic body material resemble the polymkeric substance also is so, be the time length difference that varies in size, reaches the remanent magnetism reservation of this effect.Existing research mainly is to add the research that physical and mechanical property under the electromagnetic field effect etc. launches outside at hard magnetic material (claiming permanent magnetic material or permanent magnetic material again) or soft magnetic material, mainly studies the magneto-striction phenomenon of these ferromagnetic materials or Ferrite Material.Do not see the report that thermic magnetic effect that this class nonferromagnetic material of superpolymer is produced is carried out quantitative measurment under the broad sense external load function.
Before this, Yuan Longwei has studied theoretically and has contained thermodynamics and the electro permanent magnetic that defective rheological material splits sharp fracture process district, the destructive process of pointing out material is not pure mechanical process, think that heat-conduction equation should comprise the contribution of electromagnetic field, and derived the whole momentum balance and the energy-balance equation of electromagnetic energy momentum flow vector.
Summary of the invention
The objective of the invention is based on prior art, realize a kind of defective rheid pyromagnetic collection and measuring system, the thermic magnetic induction density that contains distorted area near zone in the defective PVC sheet material destructive process, the thermal-induced imagery of distorted area near zone, the deformation map of distorted area near zone are looked like to carry out instant data acquisition, for containing deformation in the defective PVC sheet material destructive process, heat, magnetic relation and evolutionary process thereof, foundation provides measurement data, for the material damage mechanism research that contains defective rheological object provides method of testing and means.
To achieve the above object of the invention, the technical scheme that the present invention takes is: a kind of defective rheid pyromagnetic collection and test macro, comprise sensor groups, hot phase, picture synchronization collection device and power supply, wherein be connected with step motor drive mechanism and PC on the sensor groups and count extraction system, described sensor groups is included in 64 SS495 Xian Of-Sui that sensors that are 8 * 8 arranged on the detection plane, adopt and just selecting the conduct of 1 multi-way switch for 38, the gauge tap of negative supply and output terminal, per 8 sensors be one group by row the road, walking along the street and 45 degree directions connect into three-dimensional matrice; The output terminal of described output terminal gauge tap inserts the normal phase input end of hardware corrected circuit, and the D/A ALT-CH alternate channel output terminal that has PC to count extraction system inserts the inverting input of hardware corrected circuit, the A/D ALT-CH alternate channel input end of its output terminal access number extraction system.
Wherein hot synchronised harvester is infrared thermovision system, and the picture synchronization collection device is a digital camera.Described step motor drive mechanism is connected with microswitch.And above-mentioned power supply adopts high stability power supply.Hardware corrected circuit promptly adopts general differential amplifier circuit.
Above-mentioned defective rheid pyromagnetic collection provided by the invention and measuring system provide measurement data for foundation contains deformation in the defective PVC sheet material destructive process, heat, magnetic relation and evolutionary process thereof, for the material damage mechanism research that contains defective rheological object provides method of testing and means.
Below with reference to drawings and Examples principle of work of the present invention is described in detail:
Description of drawings
The structural representation of Fig. 1 defective rheid pyromagnetic measuring system;
Fig. 2 defective rheid pyromagnetic measuring system sensor electrical schematic diagram;
In the accompanying drawings:
The capable power supply of 1-material extending machine upper grip 2-row power supply multi-way switch 3-multi-way switch
The hardware corrected circuit 6-of 4-output mux 5-sensor
7-stepper motor servo control mechanism 8-servo control mechanism support 9-material extending machine lower chuck
10-high stability power supply 11-winding displacement 12-PC counts extraction system
The infrared thermovision system 14-of 13-digital camera 15-microswitch
The 16-test specimen
Embodiment:
System architecture comprises that sensor module, stepper motor servo control mechanism 7, microswitch 15, high stability power supply 10, PC count extraction system 12 as shown in Figure 1 among the embodiment, infrared thermovision system 13, and digital camera 14 grades are partly formed.
Sensor module comprises 8 * 8 linear hall sensors 6, row power supply multi-way switch 2 in the measuring system, row power supply multi-way switch 3, and output mux 4, hardware corrected circuit 5 is formed.2 timesharing of row power supply multi-way switch provide the column scan power supply to 8 alignment Hall elements, 3 timesharing of row power supply multi-way switch provide the line scanning power supply to 8 line linearity Hall elements, output mux 4 is connected into 8 groups by 45 degree directions with 64 sensors, cooperate realization sensor matrices three-dimensional to be connected with rank scanning power supply multi-way switch, 64 of realization sensor groups is selected the timesharing output of 1 signal.
Hardware corrected circuit 5 is differential amplifier circuits, PC counts the original zero-error signal of No. 64 sensors timesharing of extraction system preservation and is exported by the D/A ALT-CH alternate channel, deliver to the inverting input of hardware corrected circuit 5, by the signal subtraction of sensor groups output, realize the correction of sensor zero point with directly.High stability power supply 10 provides positive and negative power supply for sensor groups.
DG408A controls A as the positive supply insertion switch
0, A
1, A
2Cell array is realized the column scan power supply, connect the positive supply of 8 pixels at every turn.DG408B controls A as the negative supply insertion switch
3, A
4, A
5Sensor pixel array is realized the line scanning power supply, connect the negative supply of 8 pixels at every turn.The work pixel of the pixel of positive-negative power as this moment will be connected simultaneously, all the other are the inoperative pixel, in order to make the pixel ability output signal of having only row and column to power simultaneously, and the pixel of avoiding connecting positive supply separately and connecting negative supply separately forms load to the work pixel, the sensitivity of reduction work pixel is spent directions with the output terminal of 64 pixels by 45, and per 8 parallel connections are one group, be divided into 8 input ends of 8 windings, by the A of control DG408C to DG408C composition output dip switch
6, A
7, A
8Timesharing is connected and is respectively organized signal to output terminal D, as seen from the figure, and DG408A, when DG408B realizes the rank scanning power supply, in 8 pixels by 45 degree directions connections, have only one to be the work pixel of connecting positive and negative power supply simultaneously, all the other are floating fully 7 the empty inoperative pixels of positive and negative power supply.This bind mode has been connected into the three-dimensional matrice mode with 64 pixels by positive and negative power supply and output, and this three-dimensional matrice mode has been avoided the load effect of inoperative pixel to the work pixel fully, has improved the sensitivity of work pixel greatly.The common ends D of DG408C links to each other with the secondary amplifier.Only need an amplifier just can carry out timesharing and amplify, reduced hardware cost the output signal of 64 pixels.Sensor one dimension servo control mechanism driven by stepper motors drives.Relative position according to test specimen center sensor and deformation region in drawing process changes, import the break-make of the stream of pulses of stepper motor by microswitch control, drive stepping motor drives servo control mechanism, the center sensor position is moved to the deformation regional center, thereby make center sensor aim at measured zone all the time, realize following deformation region.
During work, the infrared thermovision system of infra-red heat phase acquisition system that infrared thermovision system 13 is formed is set to trigger style of shooting, utilize PC through data collecting card digital signal output interface output trigger pip, the hot phase information of timing acquiring PVC sheet material in the fail in tension process.The image capturing system that digital camera 14 is formed digital camera equally is set to trigger style of shooting, utilize PC to count extraction system and export another road trigger pip, the deformation image information of synchronous acquisition PVC sheet material in the fail in tension process through its data collecting card digital signal output interface.The stress-strain diagram of bond material drawing machine self collection simultaneously, this system just can obtain the thermic H plane distributed intelligence (magnetic phase information) in the PVC sheet material fail in tension process, infrared chart (hot phase information), digital image information and stress-strain diagram provide many reference amounts research means of testing and method for containing the research of defective rheid failure mechanism.
Claims (4)
1, a kind of defective rheid pyromagnetic collection and measuring system, comprise sensor groups, hot phase, picture synchronization collection device and power supply, wherein be connected with step motor drive mechanism and PC on the sensor groups and count extraction system, it is characterized in that, described sensor groups is included in 64 SS495 Xian Of-Sui that sensors that are 8 * 8 arranged on the detection plane, adopt 38 gauge tap of selecting 1 multi-way switch as positive and negative power supply and output terminal, per 8 sensors are one group and connect into three-dimensional matrice by row road, walking along the street and 45 degree directions; The output terminal of described output terminal gauge tap inserts the normal phase input end of hardware corrected circuit, and the D/A ALT-CH alternate channel output terminal that has PC to count extraction system inserts the inverting input of hardware corrected circuit, the A/D ALT-CH alternate channel input end of its output terminal access number extraction system.
According to described defective rheid pyromagnetic collection of claim 1 and measuring system, it is characterized in that 2, hot synchronised harvester is infrared thermovision system, the picture synchronization collection device is a digital camera.
According to described defective rheid pyromagnetic collection of claim 1 and measuring system, it is characterized in that 3, described step motor drive mechanism is connected with microswitch.
According to described defective rheid pyromagnetic collection of one of claim 1-3 and measuring system, it is characterized in that 4, described hardware corrected circuit is a differential amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100310981A CN101261245B (en) | 2008-04-18 | 2008-04-18 | Defective rheid pyromagnetic collection and test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100310981A CN101261245B (en) | 2008-04-18 | 2008-04-18 | Defective rheid pyromagnetic collection and test system |
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| CN101261245A true CN101261245A (en) | 2008-09-10 |
| CN101261245B CN101261245B (en) | 2011-06-29 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103196988A (en) * | 2013-04-16 | 2013-07-10 | 中南林业科技大学 | Comprehensive test method for thermomagnetic effect under multi-field coupling |
| CN103235031A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Five-point position three-dimensional magnetic field measurement method based on plate stretching pyromagetic effect |
| CN103235032A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Pyromagetic effect multi-field coupling integration testing system |
| CN103235273A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Five-point three-dimensional magnetic field measurement device based on board stretching pyromagnetic effect |
| CN103676904A (en) * | 2013-12-24 | 2014-03-26 | 北京航天时代光电科技有限公司 | High-precision temperature and magnetic field comprehensive generation and control device |
| CN107192759A (en) * | 2017-06-09 | 2017-09-22 | 湖南大学 | A kind of photovoltaic cell lossless detection method and system based on sensing optical heat radiation |
| CN114859139A (en) * | 2022-07-06 | 2022-08-05 | 成都航空职业技术学院 | Outdoor transmission line electromagnetic field measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2434677Y (en) * | 2000-06-30 | 2001-06-13 | 厦门爱德华检测设备有限公司 | Metal magnetic memory diagnosis instrument |
| CN201199212Y (en) * | 2008-04-16 | 2009-02-25 | 中南林业科技大学 | Heat-caused magnetic effect collection and test system containing defect rheid |
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2008
- 2008-04-18 CN CN2008100310981A patent/CN101261245B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196988A (en) * | 2013-04-16 | 2013-07-10 | 中南林业科技大学 | Comprehensive test method for thermomagnetic effect under multi-field coupling |
| CN103235031A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Five-point position three-dimensional magnetic field measurement method based on plate stretching pyromagetic effect |
| CN103235032A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Pyromagetic effect multi-field coupling integration testing system |
| CN103235273A (en) * | 2013-04-16 | 2013-08-07 | 中南林业科技大学 | Five-point three-dimensional magnetic field measurement device based on board stretching pyromagnetic effect |
| CN103235273B (en) * | 2013-04-16 | 2014-01-08 | 中南林业科技大学 | Five-point three-dimensional magnetic field measurement device based on board stretching pyromagnetic effect |
| CN103196988B (en) * | 2013-04-16 | 2014-02-26 | 中南林业科技大学 | Comprehensive test method for thermomagnetic effect under multi-field coupling |
| CN103235032B (en) * | 2013-04-16 | 2014-03-12 | 中南林业科技大学 | Pyromagetic effect multi-field coupling integration testing system |
| CN103235031B (en) * | 2013-04-16 | 2014-03-12 | 中南林业科技大学 | Five-point position three-dimensional magnetic field measurement method based on plate stretching pyromagetic effect |
| CN103676904A (en) * | 2013-12-24 | 2014-03-26 | 北京航天时代光电科技有限公司 | High-precision temperature and magnetic field comprehensive generation and control device |
| CN103676904B (en) * | 2013-12-24 | 2016-05-04 | 北京航天时代光电科技有限公司 | A kind of high-precision temperature and magnetic field are comprehensive to be occurred and control device |
| CN107192759A (en) * | 2017-06-09 | 2017-09-22 | 湖南大学 | A kind of photovoltaic cell lossless detection method and system based on sensing optical heat radiation |
| CN107192759B (en) * | 2017-06-09 | 2019-08-27 | 湖南大学 | A kind of photovoltaic cell lossless detection method and system based on induction optical heat radiation |
| CN114859139A (en) * | 2022-07-06 | 2022-08-05 | 成都航空职业技术学院 | Outdoor transmission line electromagnetic field measuring device |
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| CN101261245B (en) | 2011-06-29 |
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