CN209961651U - Multi-angle particulate matter detects photometer - Google Patents
Multi-angle particulate matter detects photometer Download PDFInfo
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- CN209961651U CN209961651U CN201920049749.3U CN201920049749U CN209961651U CN 209961651 U CN209961651 U CN 209961651U CN 201920049749 U CN201920049749 U CN 201920049749U CN 209961651 U CN209961651 U CN 209961651U
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Abstract
The utility model discloses a multi-angle particulate matter detects photometer, including the casing, detect the module, control chip, it sets up in casing center through-hole department to detect the module, it includes the sample district to detect the module, the light source, the detector, the light trap, the sample district is established in detection module center department, and the light source is established in sample district one side, and the light trap sets up with the central symmetry of casing with the light source, establishes at the sample district opposite side, and near sample district sets up a plurality of detectors along the circumferencial direction, is equipped with the light path between light source and the sample district, is equipped with the light path between sample district and the detector, and all light paths radially set up, control chip and light source 7, detector 3 pass through cable control and are connected, and this photometer can carry out the particulate matter concentration of the measurement ambient air of multi-angle.
Description
Technical Field
The utility model belongs to the environmental monitoring field especially relates to a multi-angle particulate matter detects photometer.
Background
The light scattering method can be applied to on-line automatic monitoring of particles and has the characteristics of accurate measurement, rapid reaction and the like. The light scattering instrument mostly adopts a single-angle scattering light technology or a particle counting technology. Due to technical limitations, the light scattering method is easily affected by the refractive index and the absorption rate of the particles, so that the accuracy of measured data is reduced. In order to ensure the accuracy of the data, the light scattering method instrument needs to be regularly compared and calibrated with the particle sampling and weighing data. The core component of the light scattering method instrument is a photometer, and common photometers are all in a fixed angle or single angle measuring mode, and the particle concentration in the ambient air can be obtained through the relation between the intensity of scattered light and the particle concentration. The relation between scattered light intensity and particulate matter concentration receives the influence of particulate matter refracting index and absorptivity, and the photometer often chooses a particulate matter to calibrate when leaving the factory to calibrate, can not reflect the actual properties of particulate matter completely.
In the application number: CN201310301107.5, with application dates of 2013, 07 and 17 as follows: the utility model provides a photometer, discloses a photometer, includes light source, monochromator, photoelectric converter, photomultiplier and sets up the sample room in the sample storehouse, the front end and the rear end of sample room are high transparent colourless mica sheet window, the sample room includes a reference sample room and at least one laboratory sample room, the grating of adjusting luminance includes grating board group and grating board controlling means that the syntropy set up, grating board controlling means is connected to the controller, reference sample room and laboratory sample room all set up side by side in the sample storehouse. The structure is simple, the continuity of the measuring wavelength is good, the specific measuring wavelength and the specific light intensity can be selected according to different requirements of a measuring sample, the measurement is convenient, and the measuring precision is improved.
Disclosure of Invention
The utility model aims at providing a multi-angle particulate matter detection photometer in order to overcome the defect that above-mentioned prior art exists.
The monitoring of multi-angle scattered light can be realized to multi-angle particulate matter monitoring photometer in this patent, based on Mie scattering theory, through the processing of multi-angle scattering signal, can calculate the refracting index and the absorptivity of environment particulate matter, can the automatic correction scattered light intensity through the algorithm and the relation between the particulate matter concentration.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a multi-angle particulate matter detects photometer, has included casing 1, surveys the module, control chip, it sets up in 1 central through-hole department of casing to survey the module, be equipped with insulating layer 8 between surveying module and the casing 1, it includes sample space 9 to survey the module, light source 7, detector 3, optical trap 2, sample space 9 is established in surveying module center department, light source 7 is established in sample space one side, optical trap 2 sets up at 9 opposite sides of sample space with the central symmetry of casing 1 with light source 7, near sample space 9 sets up a plurality of detectors 3 along the circumferencial direction, be equipped with the light tunnel between light source 7 and the sample space, be equipped with the light tunnel between sample space 9 and detector 3, all light tunnels radially set up, control chip and light source 7, detector 3 pass through cable control connection.
Preferably, the casing 1 is provided with a thermistor 5 and a heating resistor 6, the thermistor 5 is respectively arranged at different corners of the casing 1, and the control chip is in control connection with the thermistor 5 and the heating resistor 6 through cables.
Preferably, the number of the heating resistors 6 is 2, and the 2 heating resistors are respectively arranged at different corners of the shell 1.
Preferably, the housing 1 is provided with an overheat protector 4.
Preferably, 8 detectors 3 are provided, and 8 detectors 3 are equidistantly distributed along the circumferential direction of the detection module.
Preferably, the number of the detectors 3 is 4, and 8 of the detectors 3 are equidistantly distributed along the circumferential direction of the detection module.
Preferably, the material of the shell 1 is an aluminum block.
The utility model has the advantages that:
this photometer can carry out the particulate matter concentration of the measurement ambient air of multi-angle, simple structure, and the angle is controllable, need not calibrate, has realized the correction of photometer, has improved monitoring data's accuracy.
Drawings
FIG. 1 is a schematic structural diagram of a multi-angle particle detection photometer.
Detailed Description
The technical scheme of the utility model is further described with the attached drawings:
the utility model provides a multi-angle particulate matter detects photometer, has included casing 1, surveys the module, control chip, it sets up in 1 central through-hole department of casing to survey the module, be equipped with insulating layer 8 between surveying module and the casing 1, it includes sample space 9 to survey the module, light source 7, detector 3, optical trap 2, sample space 9 is established in surveying module center department, light source 7 is established in sample space one side, optical trap 2 sets up at 9 opposite sides of sample space with the central symmetry of casing 1 with light source 7, near sample space 9 sets up a plurality of detectors 3 along the circumferencial direction, be equipped with the light tunnel between light source 7 and the sample space, be equipped with the light tunnel between sample space 9 and detector 3, all light tunnels radially set up, control chip and light source 7, detector 3 pass through cable control connection.
In this embodiment, preferably, the casing 1 is provided with a thermistor 5 and a heating resistor 6, the thermistor 5 is respectively arranged at different corners of the casing 1, and the control chip is in control connection with the thermistor 5 and the heating resistor 6 through cables.
In this embodiment, preferably, the number of the heating resistors 6 is 2, and the 2 heating resistors are respectively arranged at different corners of the housing 1.
In the present embodiment, it is preferable that the housing 1 is provided with an overheat protector 4.
In this embodiment, preferably, 8 detectors 3 are provided, and 8 detectors 3 are equidistantly distributed along the circumferential direction of the detection module.
In this embodiment, preferably, the number of the detectors 3 is 4, and the 4 detectors 3 are equidistantly distributed along the circumferential direction of the detection module.
In this embodiment, preferably, the material of the housing 1 is an aluminum block.
The multi-angle photometer detects the middle area as a sample, and the sample can pass through a particle sample. Selecting a light source with a specific wavelength, wherein the light source works under the conditions of stable voltage and temperature and emits light beams with stable wavelength power. The heating resistor, the thermistor and the overheat protector in the device are used for ensuring the light temperature stability of the photometer, and the temperature is higher than the room temperature, so that the photometer is not influenced by water vapor in the air. The light beam scatters as it illuminates the particulate sample. Scattered light is scattered to four sides, and a detector distributed in multiple angles is used for receiving the scattered light. The intensity of scattered light is related to the concentration of particulate matter, the nature of the particulate matter, the light source, and the scattering angle. Through the relation between the multi-angle scattered light signal, can calculate the accurate concentration of particulate matter. Once the properties of the particulate matters in the sample change, the multi-angle scattered light signals also change along with the change, and the change size of the signals can be reversely deduced, so that the correction of the concentration of the particulate matters can be realized.
Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a multi-angle particulate matter detection photometer, has included casing (1), detects the module, control chip, its characterized in that:
the detection module is arranged at the central through hole of the shell (1), an insulating layer (8) is arranged between the detection module and the shell (1), the detection module comprises a sample area (9), a light source (7), a detector (3) and an optical trap (2), the sample area (9) is arranged at the center of the detection module, the light source (7) is arranged at one side of the sample area, the light trap (2) and the light source (7) are arranged symmetrically with the center of the shell (1) and arranged at the other side of the sample area (9), a plurality of detectors (3) are arranged along the circumferential direction near the sample area (9), an optical channel is arranged between the light source (7) and the sample area, an optical channel is arranged between the sample area (9) and the detector (3), all the optical channels are arranged in the radial direction, the control chip is connected with the light source (7) and the detector (3) through cables in a control mode.
2. The multi-angle particulate matter detection photometer of claim 1, wherein: the shell (1) is provided with a thermistor (5) and a heating resistor (6), the thermistor (5) is respectively arranged at different corners of the shell (1), and the control chip is in control connection with the thermistor (5) and the heating resistor (6) through cables.
3. The multi-angle particulate matter detection photometer of claim 2, wherein: the number of the heating resistors (6) is 2, and the 2 heating resistors are respectively arranged at different corners of the shell (1).
4. The multi-angle particulate matter detection photometer of claim 1, wherein: the shell (1) is provided with an overheat protector (4).
5. The multi-angle particulate matter detection photometer of claim 1, wherein:
the number of the detectors (3) is 8, and the 8 detectors (3) are distributed equidistantly along the circumferential direction of the detection module.
6. The multi-angle particulate matter detection photometer of claim 1, wherein:
the number of the detectors (3) is 4, and the 4 detectors (3) are distributed at equal intervals along the circumferential direction of the detection module.
7. The multi-angle particulate matter detection photometer of claim 1, wherein:
the shell (1) is made of an aluminum block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049749.3U CN209961651U (en) | 2019-01-13 | 2019-01-13 | Multi-angle particulate matter detects photometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920049749.3U CN209961651U (en) | 2019-01-13 | 2019-01-13 | Multi-angle particulate matter detects photometer |
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| CN209961651U true CN209961651U (en) | 2020-01-17 |
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| CN201920049749.3U Active CN209961651U (en) | 2019-01-13 | 2019-01-13 | Multi-angle particulate matter detects photometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264580A (en) * | 2021-11-19 | 2022-04-01 | 上海龙象环保科技股份有限公司 | Explosion-proof type high concentration dust on-line measuring device |
| CN114659948A (en) * | 2022-03-17 | 2022-06-24 | 江苏安环职业健康技术服务有限公司 | Metal dust detection system for workplace |
| CN114813645A (en) * | 2022-04-27 | 2022-07-29 | 泉州装备制造研究所 | Optical detection method based on light scattering |
-
2019
- 2019-01-13 CN CN201920049749.3U patent/CN209961651U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264580A (en) * | 2021-11-19 | 2022-04-01 | 上海龙象环保科技股份有限公司 | Explosion-proof type high concentration dust on-line measuring device |
| CN114264580B (en) * | 2021-11-19 | 2024-01-26 | 上海龙象环保科技股份有限公司 | Explosion-proof type high concentration dust on-line measuring device |
| CN114659948A (en) * | 2022-03-17 | 2022-06-24 | 江苏安环职业健康技术服务有限公司 | Metal dust detection system for workplace |
| CN114659948B (en) * | 2022-03-17 | 2023-10-13 | 江苏安环职业健康技术服务有限公司 | Metal dust detection system for operation place |
| CN114813645A (en) * | 2022-04-27 | 2022-07-29 | 泉州装备制造研究所 | Optical detection method based on light scattering |
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