CN203298747U - Apparatus used for monitoring real-time position of each particle in granular material flow test - Google Patents
Apparatus used for monitoring real-time position of each particle in granular material flow test Download PDFInfo
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- CN203298747U CN203298747U CN2013202685324U CN201320268532U CN203298747U CN 203298747 U CN203298747 U CN 203298747U CN 2013202685324 U CN2013202685324 U CN 2013202685324U CN 201320268532 U CN201320268532 U CN 201320268532U CN 203298747 U CN203298747 U CN 203298747U
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- discrete material
- time position
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Abstract
The utility model discloses an apparatus used for monitoring a real-time position of each particle in a granular material flow test. The apparatus is characterized in that the apparatus comprises a miniature ultrahigh-frequency electromagnetic wave transmitter (1), ultrahigh frequency electromagnetic wave sensors (2), granular material test pieces (3), a test container (4) and a test bench; the miniature ultrahigh-frequency electromagnetic wave transmitter (1) is arranged in the granular material test pieces (3); there are several granular material test pieces (3) and the granular material test pieces (3) are arranged in the test container (4); the test container (4) is arranged on the test bench; there are three groups of the ultrahigh frequency electromagnetic wave sensors (2) which are distributed around the test container. The structure of the apparatus of the utility model is simple and usage is convenient. The apparatus can be used repeatedly. Limitation of a traditional measurement method is broken through. A change condition of the real-time position of each particle in a material system can be accurately measured, wherein a granular material is in a flow process under an effect of a load.
Description
Technical field
The utility model relates to a kind of device of monitoring each particle real time position in the discrete material flow test.
Background technology
At present about discrete material flow with broken experimental study in, major part is all that to detect the indirect touch of particle be main, also be confined to the vertical and horizontal shift of material monolithic for the direct mensuration of material deformation, can not be from displacement and the distortion of thin sight goniometry individual particle., in order to record the real time position of each particle in and shattering process mobile at discrete material, can introduce location technology.
Location technology is comparatively ripe at present, mainly contains GPS location technology, acoustic emission signal location technology etc.But affected by ground environment very large due to the ground GPS signal, and satellite-signal will be flooded by ambient noise signal, accurately the position of each particle in the monitoring experiment device; And the acoustic emission signal location technology is when test is carried out, and signal will be through processes such as the decay on stratum, refraction, reflections, and it is very difficult that signal is processed, and follow-up information extraction also needs software support.The use of these methods needs certain Knowledge Base, and difficult quilt is grasped, and implement and have certain difficulty, and location is accurate not.
In sum, need a kind of easy device that can real-time monitor each particle of discrete material and obtain accurate location.
The utility model content
The utility model purpose: the purpose of this utility model is for the deficiencies in the prior art, a kind of device for each particle real time position of monitoring discrete material flow test is provided, this device positioning precision is larger, can be used for the small change in location of object in monitoring test.
Technical scheme: the device for each particle real time position of monitoring discrete material flow test described in the utility model, comprise: miniature uhf electromagnetic wave transmitter, uhf electromagnetic wave sensor, discrete material test test specimen, test chamber and testing table, described miniature uhf electromagnetic wave transmitter is arranged on the inside of described discrete material test test specimen; Described discrete material test test specimen is several, is arranged in described test chamber; Described test chamber is arranged on testing table; Described uhf electromagnetic wave sensor is three groups, be distributed in described test chamber around, can solve discrete material test test specimen more, the problem of receiver channel lazy weight.Preferably, four every group of described uhf electromagnetic wave sensors, layout is square.Three groups of uhf electromagnetic wave sensors be equilateral triangle be distributed in described test chamber around, the test specimen of every group of sensor localization 1/3 quantity.
The outside surface of described miniature uhf electromagnetic wave transmitter is provided with high pressure resistant protective material, and the transmitter outside surface is done high pressure resistant processing.
The utility model device starts to transmit loading moment by setting transmitter, different frequencies (3-30GHz) set by each transmitter so that the different test specimens of sensor identification, and utilize sensor gather the signal that in particle, transmitter sends and do pre-service, data are imported computing machine in real time,, by computational analysis, can obtain real-time three-dimensional coordinate and the particle flow geometric locus of concrete spheric grain.
Described test chamber is tubular, by upper lower plate, described discrete material test test specimen is fixed in container.
The utility model compared with prior art, its beneficial effect is: the utility model apparatus structure is simple, easy to use, and can repeated application, broken through the limitation of traditional measurement method, can Measurement accuracy discrete material in load action current downflow process, the situation of change of each particle real time position in material system.
Description of drawings
Fig. 1 is the utility model device front view;
Fig. 2 is miniature uhf electromagnetic wave emitter apparatus schematic diagram;
Fig. 3 is the utility model Plant arrangement schematic diagram.
Embodiment
Below technical solutions of the utility model are elaborated, but protection domain of the present utility model is not limited to described embodiment.
Embodiment 1: the device that is used for each particle real time position of monitoring discrete material flow test, comprise: miniature uhf electromagnetic wave transmitter 1, uhf electromagnetic wave sensor 2, discrete material test test specimen 3, test chamber 4 and testing table, described discrete material test test specimen 3 is concrete spheric grain test specimen;
Described miniature uhf electromagnetic wave transmitter 1 is arranged on the inside of described concrete spheric grain test specimen; The outside surface of described miniature uhf electromagnetic wave transmitter 1 is provided with high pressure resistant protective material 5; Described concrete spheric grain test specimen is several, is arranged in described test chamber 4; Described test chamber 4 is tubular, by upper lower plate, described discrete material test test specimen 3 is fixed in container; Described test chamber 4 is arranged on testing table; Described uhf electromagnetic wave sensor 2 is three groups,
Equilateral triangle each point centered by test chamber 4 axis (A, B, C) locates to arrange three groups of uhf electromagnetic wave sensor arrays, and four every group, the layout that is square, as shown in Figure 3., take the intersection point on test apparatus axis and testing table plane as true origin, determine that the coordinate of each sensor is respectively: A
1(x
a1, y
a1, 0), A
2(x
a2, y
a2, 0), A
3(x
a3, y
a3, 0), A
4(x
a4, y
a4, 0), B
1(x
b1, t
bl, 0), B
2(x
b2, y
b2, 0), B
3(x
b3, y
b3, 0), B
4(x
b4, y
b4, 0), C
1(x
c1, y
c1, 0), C
2(x
c2, y
c2, 0), C
3(x
c3, y
c3, 0), C
4(x
c4, y
c4, 0).
, take A group sensor as example, establish signal and arrive sensors A
2With A
1The time difference be t
21, arrive sensors A
3With A
1Mistiming be t
31, arrive sensors A
4With A
1Mistiming be t
41, the coordinate P of monitored test specimen
i(x
i, y
i, z
i).Have three unknown number x
i, y
iWith z
iElectromagnetic speed is the light velocity, i.e. v=3 * 10
8M/s., according to the time delay relation of geometric relationship and signal arrival sensor, can obtain
, by solving above-mentioned system of equations, can try to achieve the concrete coordinate P of monitored test specimen
i(x
i, y
i, z
i).This process computation amount is less, can directly be calculated by the terminal software that sensor connects, and according to result of calculation, comparatively fast determine the locus of monitored test specimen, draw out this test specimen spatial position change trajectory diagram according to the displacement of monitored test specimen in each time step again, for accurate judgement discrete material flow with crushing experiment in intergranular contact and squeeze and destroy provides the data foundation.
As mentioned above, although with reference to specific preferred embodiment, represented and explained the utility model, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (5)
1. device that is used for each particle real time position of monitoring discrete material flow test, it is characterized in that comprising: miniature uhf electromagnetic wave transmitter (1), uhf electromagnetic wave sensor (2), discrete material test test specimen (3), test chamber (4) and testing table
Described miniature uhf electromagnetic wave transmitter (1) is arranged on the inside of described discrete material test test specimen (3); Described discrete material test test specimen (3) is several, is arranged in described test chamber (4); Described test chamber (4) is arranged on testing table; Described uhf electromagnetic wave sensor (2) is three groups, be distributed in described test chamber around.
2. the device for each particle real time position of monitoring discrete material flow test according to claim 1, it is characterized in that: the outside surface of described miniature uhf electromagnetic wave transmitter (1) is provided with high pressure resistant protective material (5).
3. the device for each particle real time position of monitoring discrete material flow test according to claim 1, it is characterized in that: four every group of described uhf electromagnetic wave sensors (2), layout is square.
4. the device for each particle real time position of monitoring discrete material flow test according to claim 1 is characterized in that: three groups of uhf electromagnetic wave sensors (2) be equilateral triangle be distributed in described test chamber around.
5. the device for each particle real time position of monitoring discrete material flow test according to claim 1, it is characterized in that: described test chamber (4) be tubular, by upper lower plate, described discrete material is tested test specimen (3) and is fixed in container.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202685324U CN203298747U (en) | 2013-05-16 | 2013-05-16 | Apparatus used for monitoring real-time position of each particle in granular material flow test |
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|---|---|---|---|
| CN2013202685324U CN203298747U (en) | 2013-05-16 | 2013-05-16 | Apparatus used for monitoring real-time position of each particle in granular material flow test |
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|---|---|
| CN203298747U true CN203298747U (en) | 2013-11-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535147A (en) * | 2018-03-19 | 2018-09-14 | 河海大学 | A kind of measuring device of spherical particles system normal direction contact force and Normal Displacement |
| CN108535146A (en) * | 2018-03-19 | 2018-09-14 | 河海大学 | A kind of lower normal direction of the spherical particles system effect of being hit contacts force test method |
| CN109668517A (en) * | 2018-11-23 | 2019-04-23 | 河海大学 | Electromagnetic impact lower sphere granular system arbitrary point normal strain measuring device and method |
-
2013
- 2013-05-16 CN CN2013202685324U patent/CN203298747U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535147A (en) * | 2018-03-19 | 2018-09-14 | 河海大学 | A kind of measuring device of spherical particles system normal direction contact force and Normal Displacement |
| CN108535146A (en) * | 2018-03-19 | 2018-09-14 | 河海大学 | A kind of lower normal direction of the spherical particles system effect of being hit contacts force test method |
| CN108535147B (en) * | 2018-03-19 | 2021-03-23 | 河海大学 | Device for measuring normal contact force and normal displacement of spherical particle system |
| CN108535146B (en) * | 2018-03-19 | 2021-03-23 | 河海大学 | Method for testing normal contact force of spherical particle system under impact |
| CN109668517A (en) * | 2018-11-23 | 2019-04-23 | 河海大学 | Electromagnetic impact lower sphere granular system arbitrary point normal strain measuring device and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20160516 |