CN205374303U - Laser back scattering dust meter - Google Patents
Laser back scattering dust meter Download PDFInfo
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- CN205374303U CN205374303U CN201620052165.8U CN201620052165U CN205374303U CN 205374303 U CN205374303 U CN 205374303U CN 201620052165 U CN201620052165 U CN 201620052165U CN 205374303 U CN205374303 U CN 205374303U
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Abstract
The utility model discloses a laser back scattering dust meter, comprising a main body, install optical device, laser instrument and sensor in the main part, the sensor is installed the outside of main part, optical device mainly comprises outgoing lens, incident lens, convex lens and light filter, install in proper order one side of sensor light filter, convex lens and incident lens, install in the outside of incident lens the outgoing lens, the outgoing lens with the laser instrument cooperatees. The utility model discloses not needing to install respectively, having reduced on -the -spot installation volume, avoided owing to the drift that long -time operation back collimation nature decline leads to, sensitivity, precision height have improved response time, have also reduced owing to optical system pollutes the drift that causes.
Description
Technical field
This utility model belongs to a kind of dust detection equipment, and more specifically, this utility model relates to a kind of laser backscatter dust instrument.
Background technology
The method of existing common measurement dust is mostly inhalation and nephelometry, inhalation principle for sucking instrument internal by dust, lateral with laser again or backward principle measures dust concentration, but owing to this kind of method is other position formula, therefore real-time cannot be embodied, and owing to dust must be sucked instrument internal by the principle mandates of suction-type, therefore bigger drift value after long-play, can be caused.Nephelometry principle is that beam of laser launched by laser instrument, is irradiated on sensor after penetrating dust atmosphere to be measured, and dust concentration is more big, is irradiated to the light intensity on sensor more few；But owing to optics also exists this characteristic following, zero point place is highly sensitive, place's sensitivity of working to the last minute is low；And nephelometry be utilize laser instrument test sensor work to the last minute place variable quantity, so there is the shortcoming that accuracy is not high, and owing to nephelometry needs install transmitter unit in tested flue or environment and receive two parts of device, therefore after there is installation use complicated, long-time, quasi-value can decline, and causes the shortcoming that drift value increases.
Utility model content
The method adopted for solving above-mentioned existing dust measurement instrument also exists and cannot realize that real-time, accuracy are not high, it is complicated to install, long-play causes the problems such as drift value increase, and this utility model provides a kind of laser backscatter dust instrument.
This utility model be the technical scheme is that
A kind of laser backscatter dust instrument, including main body, described main body is provided with optics, laser instrument and sensor, described sensor is arranged on the outside of described main body, described optics is mainly made up of outgoing eyeglass, incident eyeglass, convex lens and optical filter, the side of described sensor is sequentially installed with described optical filter, convex lens and incident eyeglass, and the outside of described incident eyeglass is provided with described outgoing eyeglass, and described outgoing eyeglass matches with described laser instrument.
Further, described outgoing eyeglass and described incident eyeglass are dust-proof eyeglass.
Further, described laser instrument is semiconductor laser.
Above-mentioned technical solutions of the utility model are adopted to have the advantages that
1, this utility model by laser instrument be main form transmitter unit, be that the main receiving unit formed is integrated by sensor, it is not necessary to be respectively mounted, decrease the installation at scene, it also avoid owing to after long-play, collimation declines the drift that causes.
2, this utility model make use of the part of zero point in optics response interval, and sensor no signal time namely without dust, after Dust Capacity rises, sensor signal amount rises.Comparing nephelometry, the method is highly sensitive, and precision is high.
3, this utility model is in site measurement, is namely directly installed on the flue with dust to be measured or in environment, it is not necessary to the sampling of other position, compared with inhalation, improves response time.
4, this utility model is for, compared with inhalation, being not result in dust accumulation on instrument inside and outside wall, decreases owing to optical system pollutes the drift caused.
Accompanying drawing explanation
Fig. 1 is laser backscatter dust instrument schematic diagram of the present utility model；
Fig. 2 is the use schematic diagram of laser backscatter dust instrument of the present utility model.
In figure: 1, main body 2, optics 21, outgoing eyeglass 22, incident eyeglass 23, convex lens 24, optical filter 3, laser instrument 4, induction apparatus.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.Following example are only for clearly illustrating the technical solution of the utility model, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, a kind of laser backscatter dust instrument, including main body 1, described main body 1 is provided with optics 2, laser instrument 3 and sensor 4, described laser instrument 3 is arranged on the outside of main body 1, described optics 2 is main by outgoing eyeglass 21, incident eyeglass 22, convex lens 23 and optical filter 24 form, described outgoing eyeglass 21 and incident eyeglass 22 are dust-proof eyeglass, the side of described sensor 4 is sequentially installed with described optical filter 24, convex lens 23 and incident eyeglass 22, described incident eyeglass 22 be arranged above outgoing eyeglass 21, described outgoing eyeglass 21 matches with laser instrument 3, described laser instrument 3 is semiconductor laser.Due to this equipment by laser instrument 3 be main form transmitter unit, be that the main receiving unit formed is integrated by sensor 4, it is not necessary to be respectively mounted, decrease scene installation bright, it also avoid due to after long-play collimation decline cause elegant；Optics 2 can be utilized to respond the part of zero point in interval, and sensor no signal time namely without dust, after Dust Capacity rises, sensor signal amount rises, and compares nephelometry, and the method is highly sensitive, and precision is high；Compared with inhalation, the method is in site measurement, is namely directly installed on the flue with dust to be measured or in environment, need not sample other position, improve response time, be not result in dust accumulation on instrument inside and outside wall, decrease owing to optical system pollutes the drift caused.
Laser backscatter dust instrument of the present utility model is in use as shown in Figure 2, this is the one of which embodiment of laser backscatter dust instrument, equipment is arranged on to be measured environmentally after, laser backscatter dust instrument is started, being launched a branch of centre wavelength by laser instrument 3 is 660nm, power is the laser of 10mw, laser light outgoing eyeglass 21 is irradiated on dust to be measured, the backward scattered light of part is by incident eyeglass 22, converge to after convex lens 23 and optical filter 24 on sensor 4, if time in environment to be measured without dust, sensor 4 no signal, after Dust Capacity rises, the semaphore of sensor 4 rises.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature carries out equivalent replacement.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (3)
1. a laser backscatter dust instrument, including main body, it is characterized in that: described main body is provided with optics, laser instrument and sensor, described sensor is arranged on the outside of described main body, described optics is mainly made up of outgoing eyeglass, incident eyeglass, convex lens and optical filter, the side of described sensor is sequentially installed with described optical filter, convex lens and incident eyeglass, and the outside of described incident eyeglass is provided with described outgoing eyeglass, and described outgoing eyeglass matches with described laser instrument.
2. laser backscatter dust instrument according to claim 1, it is characterised in that: described outgoing eyeglass and described incident eyeglass are dust-proof eyeglass.
3. laser backscatter dust instrument according to claim 1, it is characterised in that: described laser instrument is semiconductor laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052165.8U CN205374303U (en) | 2016-01-19 | 2016-01-19 | Laser back scattering dust meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052165.8U CN205374303U (en) | 2016-01-19 | 2016-01-19 | Laser back scattering dust meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374303U true CN205374303U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620052165.8U Active CN205374303U (en) | 2016-01-19 | 2016-01-19 | Laser back scattering dust meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765158A (en) * | 2019-03-13 | 2019-05-17 | 陈美香 | A kind of light scattering formula dust detector and regulating device |
-
2016
- 2016-01-19 CN CN201620052165.8U patent/CN205374303U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765158A (en) * | 2019-03-13 | 2019-05-17 | 陈美香 | A kind of light scattering formula dust detector and regulating device |
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