Calibration device for forward scattering visibility meter

Abstract

The utility model provides a forward scattering visibility meter calibration device which comprises a calibration plate, a calibration frame and an adjusting support, the inside of the calibration frame is hollow, the edge of the calibration plate is connected to the inside of the calibration frame, and the calibration plate comprises an attenuation plate and a scattering plate which are concentrically arranged. The bottom of the calibration frame is detachably connected to the adjusting support. The calibration device can be fixed on an existing forward scattering visibility meter, high-precision calibration is carried out on the visibility meter, calibration efficiency and accuracy are greatly improved, operation is convenient, only the calibration plate needs to be installed in the whole calibration process, corresponding calibration software needs to be operated, rapid calibration can be carried out on site through the calibration device, and the calibration efficiency is greatly improved. The calibration time is short and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forward scattering visibility instrument calibration device belongs to the field of environmental monitoring technology. BACKGROUND

[0002] The forward scattering visibility instrument is the instrument of measuring visibility that is made of the principle of measuring aerosol and microparticle in atmosphere to incident light forward scattering energy. However, the existing visibility instrument calibration method is using the visibility shelter, changes the visibility through the fog system, and there are problems such as complex operation, long time consumption, and calibration precision is greatly influenced by environment. Especially when the visibility value of a certain point is needed, the visibility of the shelter needs to be slowly increased, which not only is inefficient, but also is easy to introduce system error. Therefore, it is of great significance to develop a device that can automatically, efficiently and accurately calibrate the visibility instrument. SUMMARY

[0003] The utility model aims at providing a forward scattering visibility instrument calibration device, through the calibration device of detachable use, reach the purpose of fast calibration on site, solve the problem of needing to enter the visibility shelter laboratory for calibration.

[0004] To achieve the above-mentioned purpose / to solve the above-mentioned technical problems, the utility model is realized by adopting the following technical scheme.

[0005] On the one hand, the utility model provides a forward scattering visibility instrument calibration device, which comprises a calibration plate, a calibration frame and an adjusting support, the inside of the calibration frame is hollow, the edge of the calibration plate is connected to the inside of the calibration frame, the calibration plate comprises concentrically arranged attenuation plate and scattering plate, and the bottom of the calibration frame is detachably connected to the adjusting support.

[0006] Further, the inside of the calibration frame is designed as a ladder at the connection with the calibration plate, the edge of the calibration plate is connected to the inside ladder of the calibration frame through a gland, and the gland and one side surface of the calibration frame are on the same plane.

[0007] Further, the attenuation plate and the scattering plate are designed as circular sheets, the inside of the calibration frame is designed as a hollow circle, and the attenuation plate, the scattering plate and the hollow inside of the calibration frame are concentrically arranged.

[0008] Further, the gland is annularly arranged.

[0009] Further, the bottom of the calibration frame is designed as a plane, and the bottom of the calibration frame is connected to the adjusting support through bolts.

[0010] Further, the adjusting support is designed as an I-shaped design, and the bottom of the adjusting support is provided with a through hole for bolt connection with the forward scattering visibility instrument.

[0011] Further, the attenuation plate adopts a diameter of 80mm, 90% attenuation neutral glass, and the attenuation plate is used for attenuating the energy of the light source emitted by the emission end of the forward scattering visibility instrument,

[0012] Further, the scattering plate adopts a diameter of 80mm, 1500 mesh, single-side frosted K9 glass, and the scattering plate is used for scattering the emitted light.

[0013] Working principle: the calibration device is used for scattering the quantitative light, so that the receiver obtains a quantitative value, and then the quantitative value is used as a calibration reference to calibrate other forward scattering instruments, and is used for measuring and calibrating visibility.

[0014] Specifically, the scattering plate calibration is usually used as part of the calibration unit of the scattering instrument, is combined with the attenuation plate, can attenuate the light signal by quantitative absorption or reflection of the light, and then scatters the attenuated light signal; within the dynamic receiving range, the receiver receives a quantitative value; the value can be used as a reference standard value and is used for calibrating other forward scattering visibility instruments.

[0015] Compared with the prior art, the calibration device can be fixed on the existing forward scattering visibility instrument, high-precision calibration of the visibility instrument is realized, the calibration efficiency and accuracy are greatly improved, and the operation is convenient: the entire calibration process only needs to install the calibration plate and run corresponding calibration software, the calibration device is used, fast calibration can be realized on site, the calibration time is short, and the efficiency is high.

[0016] The calibration device can be fixed on the existing forward scattering visibility instrument, high-precision calibration of the visibility instrument is realized, the calibration efficiency and accuracy are greatly improved, and the operation is convenient: the entire calibration process only needs to install the calibration plate and run corresponding calibration software, the calibration device is used, fast calibration can be realized on site, the calibration time is short, and the efficiency is high.

[0017] The calibration device can be fixed on the existing forward scattering visibility instrument, high-precision calibration of the visibility instrument is realized, the calibration efficiency and accuracy are greatly improved, and the operation is convenient: the entire calibration process only needs to install the calibration plate and run corresponding calibration software, the calibration device is used, fast calibration can be realized on site, the calibration time is short, and the efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a schematic view of the structure of the utility model;

[0019] Figure 2 Fig. 2 is an installation schematic view of the utility model. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical scheme of the utility model, rather than limitations of the technical scheme of the utility model. In the case of no conflict, the technical features in the embodiments and the embodiments can be combined with each other.

[0021] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Example

[0022] like Figure 1 As shown, this embodiment provides a forward scattering visibility meter calibration device, including: a calibration plate 1, a calibration frame 2, and an adjustment bracket 3;

[0023] The calibration frame 2 is hollow inside. The edge of the calibration plate 1 is connected to the inside of the calibration frame 2. The calibration plate 1 includes an attenuation plate and a scattering plate arranged concentrically. The attenuation plate and the scattering plate are circular in shape. The inside of the calibration frame 2 is hollow and circular. The attenuation plate and the scattering plate are concentrically arranged with the hollow part inside the calibration frame 2. The connection between the inner side of the calibration frame 2 and the calibration plate 1 is stepped. The edge of the calibration plate 1 is connected to the inner stepped part of the calibration frame 2 by a pressure cap 4. The pressure cap 4 and one side surface of the calibration frame 2 are on the same plane. The pressure cap 4 is annular.

[0024] The bottom of the calibration frame 2 is detachably connected to the adjustment bracket 3;

[0025] The bottom of the calibration frame 2 is flat, and the bottom of the calibration frame 2 is connected to the adjustment bracket 3 by bolts 5.

[0026] The adjustment bracket 3 is designed in the shape of an I-beam, and a through hole 6 is opened at the bottom of the adjustment bracket 3 for bolt connection with the forward scattering visibility meter.

[0027] The attenuation plate is made of 80mm diameter, 90% attenuation neutral glass. The attenuation plate is used to attenuate the energy emitted by the light source at the transmitter of the forward-scattering visibility meter.

[0028] The diffuser plate is made of 80mm diameter, 1500 mesh, single-sided frosted K9 glass, and is used to scatter the emitted light.

[0029] like Figure 2The working process of the embodiment is shown as follows: the calibration plate is placed in the annular calibration frame and fixed by the annular gland through bolts; the mounting ring is fixed to the adjusting support of the corresponding height; the whole calibration device A is fixed to the forward scattering visibility meter B; the attenuation plate is directed to the emission end of the forward scattering visibility meter; the scattering plate is directed to the receiving end of the forward scattering visibility meter; the calibration device A is installed and positioned through the two through holes on the calibration device A, so that the calibration device A and the forward scattering visibility meter are kept in the vertical installation state; the forward scattering visibility meter is connected with the data line; the forward scattering visibility meter and the calibration software are run; the corresponding visibility value of the calibration plate is filled in the calibration software; the calibration key is clicked to calibrate; after the received voltage of the forward scattering visibility meter is stable, the calibration is completed; the current real-time visibility value is read, which is the calibrated visibility value.

[0030] The utility model discloses convenient operation: the whole calibration process only needs to install the calibration plate, and runs the calibration software.

[0031] High-precision calibration: through the calibration plate of fixed visibility value, the high precision of calibration is ensured.

[0032] High consistency: using the same calibration device to calibrate ensures the consistency of different forward scattering visibility meters.

[0033] Short calibration time: through the use of calibration device, the fast calibration can be carried out on the spot.

[0034] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above-mentioned specific implementation mode, and the above-mentioned specific implementation mode is only illustrative, not restrictive, and the ordinary skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection of the utility model.

Claims

1. A forward scattering visibility sensor calibration device, characterized by, The utility model relates to a kind of calibration board, calibration frame and adjusting support, the inside of the calibration frame (2) is hollowly arranged, the edge of the calibration board (1) is connected to the inside of calibration frame (2), the calibration board (1) includes concentrically arranged: attenuation board and scattering board, the bottom of the calibration frame (2) is detachably connected on adjusting support (3). The inside of the calibration frame (2) is connected with the calibration board (1) and is designed as a ladder, the edge of the calibration board (1) is connected at the inside ladder of the calibration frame (2) by gland (4), and the gland (4) and the surface of one side of the calibration frame (2) are on the same plane.

2. The forward scatter visibility meter calibration device of claim 1, wherein, The attenuation board and scattering board are designed as circular sheet, the inside of the calibration frame (2) is hollow circular, the attenuation board, scattering board and the hollow inside of the calibration frame (2) are concentrically arranged.

3. The forward scatter visibility meter calibration device of claim 1, wherein, The gland (4) is annularly arranged.

4. The forward scatter visibility meter calibration device of claim 2, wherein, The bottom of the calibration frame (2) is designed as a plane, and the bottom of the calibration frame (2) is connected with the adjusting support (3) by bolt (5).

5. The forward scatter visibility meter calibration device of claim 1, wherein, The adjusting support (3) is designed as an I-shaped, and the bottom of the adjusting support (3) is provided with a through hole (6) for bolt connection with the forward scattering visibility instrument.

6. The forward scatter visibility meter calibration device of claim 1, wherein, The attenuation board is made of 80mm diameter, 90% attenuation neutral glass.

7. The forward scatter visibility meter calibration device of claim 1, wherein, The scattering board is made of 80mm diameter, 1500 mesh, single-side frosted K9 glass.

8. The forward scatter visibility meter calibration device of claim 1, wherein, ​

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