CN218629470U

CN218629470U - Fog meter

Info

Publication number: CN218629470U
Application number: CN202222654937.3U
Authority: CN
Inventors: 吴东儒
Original assignee: Guangzhou East Confucianism Electronic Technology Co ltd
Current assignee: Guangzhou East Confucianism Electronic Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-03-14
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a fog gauge, which relates to the technical field of fog detection, and comprises a machine body, the top of the machine body is provided with a light-emitting module, the light source is arranged in the light-emitting module, and the fog gauge has no object in the middle of a first photoelectric switch and outputs a conducting signal when a rotating plate notch is turned over to the first photoelectric switch during testing by arranging the first photoelectric switch, a second photoelectric switch and a rotating plate, so that a stepping motor stops rotating, and at the moment, a light screen just returns to a light emergent hole to realize accurate positioning; when the notch on the rotating plate is turned into the second photoelectric switch, no object is shielded in the middle of the second photoelectric switch, so that the second photoelectric switch is conducted, a conducting signal is output, the stepping motor stops rotating, and the light shielding plate leaves the light-emitting emergent hole; therefore, the problem that the angle of the stepping motor is not accurate or the position is easy to be dislocated after the stepping motor is long along with time is solved, and the shading plate can be accurately positioned.

Description

Fog meter

Technical Field

The utility model relates to a haze detects technical field, specifically is a fog meter.

Background

The fog meter mainly comprises an upper light-emitting module and a lower machine body, wherein a light-receiving module in the machine body mainly comprises a light incident hole, an integrating sphere, a light sensor, a stepping motor, a light screen and the like. During testing, a tested object is placed on the light incidence hole, and a test result can be displayed on the display screen by pressing the test key. However, when the light source is used, the light shielding plate is required to be frequently rotated to be rotated when testing, if the angle of the motor is not accurate or the position is easily rotated and dislocated after the time is long, the stability of a test result is influenced, the light source belongs to an electronic device, the light source is aged when being used for a long time, or an instrument is not calibrated for a long time, so that the test result is deviated, and the stability of the test result is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a fog gauge has solved the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a fog meter, includes the fuselage, the top of fuselage is provided with light emitting module, light emitting module internally mounted has the light source, the inside below that just is located the light source of light emitting module is provided with first light sensor, the inside below that just is located first light sensor of light emitting module is provided with operation display panel, the inside integrating sphere that is provided with of fuselage, the inside step motor that is provided with of fuselage, the top of integrating sphere is provided with the light and penetrates the hole, be provided with the light exit hole on the integrating sphere, the inside light screen that is provided with of integrating sphere, be provided with second light sensor on the integrating sphere, be provided with the connecting box on the integrating sphere, step motor's output extends to the connecting box inside and is provided with the rotor plate, the one end of light screen is connected with the one end of rotor plate, the inside first photoelectric switch that is provided with of connecting box, the inside one side that just is located first photoelectric switch of connecting box is provided with second photoelectric switch.

Preferably, an operation display panel is disposed at one side of the body.

Preferably, the integrating sphere, the light incidence hole, the light emergence hole, the second light sensor, the stepping motor and the light shielding plate form a light receiving module.

Preferably, the rotating plate is provided with a notch.

Preferably, the light shielding plate is fitted with the light exit hole.

Preferably, the first photoelectric switch and the second photoelectric switch are matched with the rotating plate.

The utility model provides a fog meter possesses following beneficial effect:

1. according to the fog meter, the first photoelectric switch, the second photoelectric switch and the rotating plate are arranged, when a gap of the rotating plate is turned into the first photoelectric switch during testing, no object is communicated between the first photoelectric switch, a conducting signal is output, the stepping motor stops rotating, and at the moment, the light shielding plate just returns to the light emergent hole to achieve accurate positioning; when the notch on the rotating plate is turned into the second photoelectric switch, no object is blocked in the middle of the second photoelectric switch, so that the second photoelectric switch is conducted, a conducting signal is output, the stepping motor stops rotating, and the light shielding plate leaves the light-emitting emergent hole; therefore, the problem that the angle of the stepping motor is not accurate or the position is easy to be dislocated after the stepping motor is long along with time is solved, and the shading plate can be accurately positioned.

2. This fog gauge through being provided with light source, first light sensor and light emitting module, monitors the light source with first light sensor, and during the test of every turn, all can read first light sensor's value, current value and standard value of comparison, this kind of difference is very little when normal, and when the light source changed, this kind of difference will grow. When the light source changes due to some reason, the first optical sensor can timely monitor the attenuation amount and compensate the test result, so that the test result is stable, the problem that the test result is possibly deviated due to the aging phenomenon of the light source after long-time use or the fact that an instrument is not calibrated for a long time is solved, and the stability of the test result is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the body, the light-emitting module and the integrating sphere of the present invention;

FIG. 3 is a schematic structural view of an integrating sphere of the present invention;

fig. 4 is a schematic structural view of a light-emitting module part of the present invention;

fig. 5 is the schematic diagram of the internal structure of the connection box of the present invention.

In the figure: 1. a body; 2. a light emitting module; 3. an integrating sphere; 4. a stepping motor; 5. a first light sensor; 6. a light injection hole; 7. a light exit aperture; 8. a visor; 9. a light source; 10. a second light sensor; 11. an operation display panel; 12. a connecting box; 13. a rotating plate; 14. a first photoelectric switch; 15. a second photoelectric switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a fog meter, including fuselage 1, the top of fuselage 1 is provided with light emitting module 2, light emitting module 2 internally mounted has light source 9, the inside below that just is located light source 9 of light emitting module 2 is provided with first light sensor 5, the inside below that just is located first light sensor 5 of light emitting module 2 is provided with operation display panel 11, the inside integrating sphere 3 that is provided with of fuselage 1, the inside step motor 4 that is provided with of fuselage 1, the top of integrating sphere 3 is provided with light inlet hole 6, be provided with light exit hole 7 on the integrating sphere 3, the inside light screen 8 that is provided with of integrating sphere 3, be provided with second light sensor 10 on the integrating sphere 3, be provided with connecting box 12 on the integrating sphere 3, the output of step motor 4 extends to the inside and is provided with rotor plate 13 of connecting box 12, the one end of light screen 8 is connected with the one end of rotor plate 13, the inside first photoelectric switch 14 that is provided with of connecting box 12, the inside and the one side that is located first photoelectric switch 14 of connecting box 12 is provided with second photoelectric switch 15.

An operation display panel 11 is arranged on one side of the machine body 1 and used for operating the meter and simultaneously seeing the value detected by the meter, an integrating sphere 3, a light inlet hole 6, a light exit hole 7, a second optical sensor 10, a stepping motor 4 and a light shielding plate 8 form a light receiving module, a notch is arranged on the rotating plate 13, the light shielding plate 8 is matched with the light exit hole 7, and a first photoelectric switch 14 and a second photoelectric switch 15 are matched with the rotating plate 13.

In summary, the haze meter, when used, is generally tested along with the transmittance Tt when testing the haze H of a sample. Therefore, three quantities are needed to be measured, namely incident light flux (T1), transmitted light flux (T2) and instrument scattered light flux (T3), the second light sensor 10 fixed on the integrating sphere 3 absorbs the light in the sphere and converts the light into photocurrent, and the photocurrent is detected, amplified, converted into A/D and processed by a microcomputer to measure T1, T2 and T3;

the light transmittance and haze value calculation method is as follows:

light transmittance: tt = T2/T1 × 100%;

haze: h = T3/Tt × 100%;

measurement of T1: the measured object is not placed on the light incidence hole 6, the light shielding plate 8 blocks the light emergence hole 7, at the moment, the integrating sphere 3 absorbs all light passing through the light incidence hole 6, and the data read by the microcomputer of the second optical sensor 10 is T1;

measurement of T2: placing a measured object on the light incidence hole 6, blocking the light emergence hole 7 by the light blocking plate 8, wherein light firstly passes through the measured object and then enters the light incidence hole 6, the integrating sphere 3 absorbs all light in the sphere, and the data read by the microcomputer of the second optical sensor 10 is T2;

measurement T3: placing a measured object on the light incidence hole 6, wherein the light shielding plate 8 does not block the light exit hole 7, the integrating sphere 3 only absorbs light which is more than 2.5 degrees away from the incident light at the moment, other light exits the integrating sphere 3 through the light exit hole 7, and the data read by the microcomputer from the second light sensor 10 is T3;

after T1, T2 and T3 are respectively measured, the haze value can be obtained;

when the notch of the rotating plate 13 is shifted into the first photoelectric switch 14 during testing, no object is communicated in the middle of the first photoelectric switch 14, a conducting signal is output, the stepping motor 4 stops rotating, and the light shielding plate 8 just returns to the light emergent hole 7 to realize accurate positioning;

when the notch on the rotating plate 13 is turned into the second photoelectric switch 15, no object is shielded in the middle of the second photoelectric switch 15, so that the second photoelectric switch 15 is switched on, a switching-on signal is output, the stepping motor 4 stops rotating, and the light shielding plate 8 leaves the light-emitting exit hole 7;

meanwhile, the first optical sensor 5 is used for monitoring the light source 9, the value of the first optical sensor 5 is read during each test, the current value and the standard value are compared, the difference value is small during normal operation, and the difference value is increased when the light source 9 is changed. When the light source 9 changes for some reason, the first optical sensor 5 can monitor the attenuation amount in time, and compensate the test result, so that the test result is stable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A fog meter, includes fuselage (1), its characterized in that: the top of the machine body (1) is provided with a light-emitting module (2), a light source (9) is arranged in the light-emitting module (2), a first light sensor (5) is arranged in the light-emitting module (2) and below the light source (9), an operation display panel (11) is arranged in the light-emitting module (2) and below the first light sensor (5), an integrating sphere (3) is arranged in the machine body (1), a stepping motor (4) is arranged in the machine body (1), the top of the integrating sphere (3) is provided with a light injection hole (6), a light exit hole (7) is arranged on the integrating sphere (3), a shading plate (8) is arranged in the integrating sphere (3), a second optical sensor (10) is arranged on the integrating sphere (3), the integrating sphere (3) is provided with a connecting box (12), the output end of the stepping motor (4) extends into the connecting box (12) and is provided with a rotating plate (13), one end of the shading plate (8) is connected with one end of the rotating plate (13), a first photoelectric switch (14) is arranged in the connecting box (12), and a second photoelectric switch (15) is arranged inside the connecting box (12) and on one side of the first photoelectric switch (14).

2. The haze meter according to claim 1, wherein: an operation display panel (11) is arranged on one side of the machine body (1).

3. The haze meter according to claim 1, wherein: the integrating sphere (3), the light incidence hole (6), the light emergence hole (7), the second optical sensor (10), the stepping motor (4) and the light shielding plate (8) form a light receiving module.

4. The haze meter according to claim 1, wherein: the rotating plate (13) is provided with a notch.

5. The haze meter according to claim 1, wherein: the light shielding plate (8) is matched with the light emergent hole (7).

6. The haze meter according to claim 1, wherein: the first photoelectric switch (14) and the second photoelectric switch (15) are matched with the rotating plate (13).