CN204241375U - A kind of reflective infrared silt sensor measuring water flow mud-sand content - Google Patents
A kind of reflective infrared silt sensor measuring water flow mud-sand content Download PDFInfo
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- CN204241375U CN204241375U CN201420812576.3U CN201420812576U CN204241375U CN 204241375 U CN204241375 U CN 204241375U CN 201420812576 U CN201420812576 U CN 201420812576U CN 204241375 U CN204241375 U CN 204241375U
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- infrared light
- photodetector
- cloche
- light supply
- infrared
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Abstract
Measure a reflective infrared silt sensor for water flow mud-sand content, belong to sensor technical field.In order to solve the problem of the infrared silt sensor cost intensive measuring sediment charge at present.Described sensor comprises treatment circuit, photodetector, shading sleeve, infrared light supply and cloche; Described photodetector, shading sleeve and infrared light supply are all arranged in cloche, and described shading sleeve is enclosed within the outside surface of photodetector, described infrared light supply, for launching infrared light through cloche in the current of sediment charge to be measured; Described photodetector, for the infrared light through silt reflection and scattering in cloche detection current; Described treatment circuit, obtains the simulating signal of sediment charge according to the infrared light intensity of photodetector detection.The lower end of described shading sleeve and the seamless link of cloche base plane.The utility model is applied in the field such as research soil and water conservation and soil loss monitoring.
Description
Technical field
The utility model belongs to sensor technical field, particularly a kind of reflective infrared silt sensor measuring water flow mud-sand content.
Background technology
At present, the silt sensor utilizing infrared ray reflection strength in variable concentrations silt carrying flow this principle different to carry out sediment concentration measuring has infrared sand-measuring meter and the reflective sand-carrying capacity measuring method of one and device.Wherein, infrared sand-measuring meter adopts common infrared light supply and photodetector to carry out the measurement of sediment charge, but sensor optical path design is too simple, and structure is reasonable not, causes sediment concentration measuring scope lower than 50kg/m
3, the measurement of inapplicable high sediment concentration current, practicality is not high.In addition, the near-infrared light source (1800nm and 1940nm) that reflective sand-carrying capacity measuring method and device adopt and photodetector carry out the measurement of sediment charge, because 1800nm and 1940nm infrared light supply has stronger moisture absorption and reflection characteristic, sediment concentration measuring scope reaches 300kg/m
3but infrared light supply and photodetector are placed in the measurement carrying out sediment charge in same confined space by the design of its sensor construction, the superposition interference that the mirror-reflection not getting rid of glass sheet produces, and 1800nm and 1940nm infrared light supply and detector unit price are the decades of times even hundreds of times of domestic common infrared light supply and photodetector, and production application is with high costs.
So existing silt sensor is that infrared light supply and photodetector are placed in the measurement carrying out sediment charge in the same space.Enter in silt carrying flow through glass sheet after the infrared ray part refraction that infrared light supply produces, again photodetector is entered through glass sheet by the reflection of sand grain, produce effective photosignal, and another part infrared ray directly enters photodetector after glass sheet surface generation mirror-reflection, so just invalid superposition interference is created to measurement result.
Utility model content
The purpose of this utility model is the problem in order to solve the infrared silt sensor cost intensive measuring sediment charge at present, provides a kind of reflective infrared silt sensor measuring water flow mud-sand content.
A kind of reflective infrared silt sensor measuring water flow mud-sand content of the present utility model,
Described sensor comprises treatment circuit, photodetector, shading sleeve, infrared light supply and cloche;
Described photodetector, shading sleeve and infrared light supply are all arranged in cloche, and described shading sleeve is enclosed within the outside surface of photodetector,
Described infrared light supply, for launching infrared light through cloche in the current of sediment charge to be measured;
Described photodetector, for the infrared light through silt reflection and scattering in cloche detection current;
Described treatment circuit, obtains the simulating signal of sediment charge according to the infrared light intensity of photodetector detection.
The lower end of described shading sleeve and the seamless link of cloche base plane.
The detection direction angular range of described infrared light supply transmitting illuminant direction and photodetector is 35 ° ~ 55 °.
Described sensor comprises multiple infrared light supply, and described multiple infrared light supply is distributed in around it centered by described photodetector.
Described infrared light supply is infrarede emitting diode, and its peak wavelength scope is 940nm ~ 950nm;
Described photodetector is infrared receiving diode, and its sensitive wave length scope is 800nm ~ 1100nm.
Described treatment circuit forms circuit board, and infrared light supply and photodetector are weldingly fixed on described circuit board by welding pin.
Described sensor also comprises guard shield 7;
Described circuit board, photodetector, shading sleeve, infrared light supply and cloche are all arranged in guard shield.
The afterbody of described guard shield is provided with internal thread, and described internal thread is used for being tightly connected with cable water joint.
Fluid sealant is adopted to carry out waterproof sealing between described guard shield and cloche.
The beneficial effects of the utility model are, due to infrared light supply and photodetector are carried out space isolation by shading sleeve, make infrared light supply be blocked cover at the mirror-reflection infrared light that cloche surface produces to stop, enter photodetector whole are infrared lights of silt reflection and scattering, thus avoid mirror-reflection the superposition of silt measurement result is disturbed, improve measurement range and precision.Meanwhile, the lower-cost infrarede emitting diode that adopts of infrared light supply of the present utility model and photodetector and infrared receiving diode just can realize.The utility model can effectively avoid the superposition of mirror-reflection to disturb compared with the reflective infrared silt sensor not adding shading sleeve, and sediment concentration measuring scope significantly improves.Experimental verification, lower-cost the utility model sediment concentration measuring scope also can reach 300kg/m
3above.
Accompanying drawing explanation
Fig. 1 is a kind of principle schematic measuring the reflective infrared silt sensor of water flow mud-sand content described in the utility model.
Embodiment
Composition graphs 1 illustrates present embodiment, a kind of reflective infrared silt sensor measuring water flow mud-sand content described in present embodiment,
Described sensor comprises treatment circuit 1, photodetector 2, shading sleeve 3, multiple infrared light supply 5, cloche 6 and guard shield 7;
Described shading sleeve 3 is enclosed within the outside surface of photodetector 2, and described treatment circuit 1 makes circuit board, is weldingly fixed on described circuit board by infrared light supply 5 and photodetector 2 by welding pin 4; Described multiple infrared light supply 5 is distributed in around it centered by described photodetector 2; The detection direction angle of adjustment infrared light supply 5 transmitting illuminant direction and photodetector 2, angular range is 35 ° ~ 55 °; Cloche 6 put into downwards by the circuit board welded, infrared light supply 5 and photodetector 2, circuit board is located at the top of cloche 6, shading sleeve 3 lower end and the seamless link of cloche 6 base plane, finally all embed circuit board, photodetector 2, shading sleeve 3, infrared light supply 5 and cloche 6 in guard shield 7.
Described infrared light supply 5, for launching infrared light through cloche 6 in the current of sediment charge to be measured;
Described photodetector 2, for detecting the infrared light of silt reflection and scattering in current through cloche 6;
Described treatment circuit 1, according to the simulating signal of the infrared light intensity acquisition sediment charge that photodetector 2 detects;
After infrared light supply 5 and photodetector 2 carry out space isolation by shading sleeve 3, infrared light supply 5 is blocked cover 3 at the mirror-reflection that cloche 6 surface produces to be stopped, photodetector 2 cannot be entered, superposition interference can not be produced to measurement result, reach the object improving measurement range and precision.
Present embodiment have employed the infrarede emitting diode of common low cost as infrared light supply 5, its peak wavelength scope is 940nm ~ 950nm, common infrared receiving diode is as photodetector 2, its sensitive wave length scope is 800nm ~ 1100nm, the inner structure of sensor is improved, silt sensor not only good economy performance after improving simultaneously, and the superposition interference that mirror-reflection can be avoided to produce, substantially increase the measurement range of sediment charge, reach 300kg/m
3above.
In present embodiment, the afterbody of described guard shield 7 is provided with internal thread, and described internal thread is used for being tightly connected with cable water joint.
In present embodiment, between described guard shield 7 and cloche 6, fluid sealant is adopted to carry out waterproof sealing.
The sensor of present embodiment can be widely used in the field such as research soil and water conservation and soil loss monitoring.
Claims (9)
1. measure the reflective infrared silt sensor of water flow mud-sand content for one kind, it is characterized in that, described sensor comprises treatment circuit (1), photodetector (2), shading sleeve (3), infrared light supply (5) and cloche (6);
Described photodetector (2), shading sleeve (3) and infrared light supply (5) are all arranged in cloche (6), and described shading sleeve (3) is enclosed within the outside surface of photodetector (2),
Described infrared light supply (5), for launching infrared light through cloche (6) in the current of sediment charge to be measured;
Described photodetector (2), for the infrared light through silt reflection and scattering in cloche (6) detection current;
Described treatment circuit (1), according to the simulating signal of the infrared light intensity acquisition sediment charge that photodetector (2) detects.
2. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 1, is characterized in that, the lower end of described shading sleeve (3) and cloche (6) base plane seamless link.
3. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 1 and 2, is characterized in that,
The detection direction angular range of described infrared light supply (5) transmitting illuminant direction and photodetector (2) is 35 ° ~ 55 °.
4. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 3, it is characterized in that, described sensor comprises multiple infrared light supply (5), and described multiple infrared light supply (5) is distributed in around it centered by described photodetector (2).
5. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 4, it is characterized in that, described infrared light supply (5) is infrarede emitting diode, and its peak wavelength scope is 940nm ~ 950nm;
Described photodetector (2) is infrared receiving diode, and its sensitive wave length scope is 800nm ~ 1100nm.
6. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 5, it is characterized in that, described treatment circuit (1) forms circuit board, and infrared light supply (5) and photodetector (2) are weldingly fixed on described circuit board by welding pin (4).
7. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 6, it is characterized in that, described sensor also comprises guard shield (7);
Described circuit board, photodetector (2), shading sleeve (3), infrared light supply (5) and cloche (6) are all arranged in guard shield (7).
8. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 7, it is characterized in that, the afterbody of described guard shield (7) is provided with internal thread, and described internal thread is used for being tightly connected with cable water joint.
9. a kind of reflective infrared silt sensor measuring water flow mud-sand content according to claim 7, is characterized in that, adopt fluid sealant to carry out waterproof sealing between described guard shield (7) and cloche (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812576.3U CN204241375U (en) | 2014-12-18 | 2014-12-18 | A kind of reflective infrared silt sensor measuring water flow mud-sand content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420812576.3U CN204241375U (en) | 2014-12-18 | 2014-12-18 | A kind of reflective infrared silt sensor measuring water flow mud-sand content |
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| Publication Number | Publication Date |
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| CN204241375U true CN204241375U (en) | 2015-04-01 |
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| CN201420812576.3U Expired - Fee Related CN204241375U (en) | 2014-12-18 | 2014-12-18 | A kind of reflective infrared silt sensor measuring water flow mud-sand content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037052A (en) * | 2017-12-29 | 2018-05-15 | 广州和时通电子科技有限公司 | Husky apparatus and method are surveyed in a kind of hydrometric station automatically with infrared optics formula |
-
2014
- 2014-12-18 CN CN201420812576.3U patent/CN204241375U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037052A (en) * | 2017-12-29 | 2018-05-15 | 广州和时通电子科技有限公司 | Husky apparatus and method are surveyed in a kind of hydrometric station automatically with infrared optics formula |
| CN108037052B (en) * | 2017-12-29 | 2024-02-02 | 广州和时通电子科技有限公司 | Infrared optical automatic sand measuring device and method for hydrologic station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190929 Address after: 150080 Heilongjiang City, Harbin Province, Nangang District Road No. 78 Patentee after: Heilongjiang Prov. Water Conservancy Science Inst. Address before: 150070 Heilongjiang city of Harbin province Daoli District Jingjiang West Road No. 50 Patentee before: HEILONGJIANG PROVINCIAL INSTITUTE OF SOIL SCIENCE |
|
| 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: 20150401 Termination date: 20191218 |