CN215866383U

CN215866383U - High-accuracy portable visibility measuring device

Info

Publication number: CN215866383U
Application number: CN202121863496.7U
Authority: CN
Inventors: 高逸洁; 李彤; 谭辉
Original assignee: Nanchang Chenke Electric Co ltd
Current assignee: Nanchang Chenke Electric Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-18
Anticipated expiration: 2031-08-11

Abstract

The utility model relates to the field of measuring devices, in particular to a portable visibility measuring device with high accuracy. Comprises a transmitting end, a receiving end and an annular cavity; the annular cavity comprises an annular space and a spherical space which are formed by the outer shell and the inner shell wall; the transmitting end and the receiving end are arranged in the annular cavity at an included angle, and the light absorption space and the transmitting end are arranged on the same axis; the transmitting channel connected with the transmitting end extends into the spherical space; the receiving channel connected with the receiving end extends into the spherical space, and the light absorption channel connected with the spherical space extends into the spherical space.

Description

High-accuracy portable visibility measuring device

Technical Field

The utility model relates to the field of measuring devices, in particular to a portable visibility measuring device with high accuracy.

Background

Visibility measurement is a series of analysis methods established by applying an optical principle, a sensor and a processing technology, transmitting signals by using fixed-frequency pulses and comparing the relationship between the optical signal intensity of a transmitting end and that of a receiving end. As shown in fig. 1, a conventional visibility measuring apparatus includes a transmitting end, a receiving end, and a control unit, which are connected to each other through a mechanical column, and a sampling space is an atmosphere separated between the receiving end and the transmitting end. As can be seen from fig. 1, the conventional structure is relatively complex in assembling the units, and because the transmitting end and the receiving end are independent modules, they need to be spatially aligned when being installed, that is, the space formed by the transmitting light source and the scattering point intersects the space formed by the receiving end and the scattering point, but since the distance between the transmitting end and the receiving end is generally about one meter, the operation of spatial alignment is relatively complex. In addition, the receiving end and the transmitting end are exposed to the open air. Although a section of protective long tube is added in front of the two ports, the background light is very strong relative to scattered light, so that very large interference light still exists, and the upper end of the protective long tube is directly irradiated by sunlight due to the fact that complete sealing cannot be achieved, so that the interference light intensity which is difficult to isolate occurs. For a small signal extraction device, the interference of background light can greatly increase the complexity of signal extraction in the later period, and inconvenience is also generated for circuit design, so that the device has defects.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to overcome the drawbacks of the prior art by providing a portable visibility measuring device with high accuracy that solves the above mentioned problems.

The technical scheme of the utility model is as follows: a high-accuracy portable visibility measuring device comprises a transmitting end and a receiving end; wherein also includes the annular chamber;

the annular cavity comprises an annular space and a spherical space formed by the outer shell and the inner shell wall;

the transmitting end and the receiving end are arranged in the annular cavity at an included angle, and the light absorption space and the transmitting end are arranged on the same axis;

the transmitting channel connected with the transmitting end extends into the spherical space; the receiving channel connected with the receiving end extends into the spherical space, and the light absorption channel connected with the spherical space extends into the spherical space;

the spherical space is communicated with the outside atmosphere through an atmosphere passage.

Preferably, the transmitting end has a length of 60 mm.

Preferably, the length of the receiving end is 180 mm.

Preferably, the distance between the left end of the transmitting end and the position of the sphere center of the spherical space is 90 mm.

Preferably, the outer housing is coated with a white coating to prevent excessive heating from prolonged exposure to sunlight, making the internal system unstable.

Preferably, the annular space can be used for placing electric components such as circuit boards and wires, the space of the device is reasonably used, and the device is more convenient and faster to use, attractive and convenient to carry.

The utility model arranges the transmitting end and the receiving end in the annular instrument (namely an annular cavity), thus reducing the influence of background light and other stray light on the visibility receiving end, designs a gas sampling space in the visibility measuring device, thus being capable of blocking the light directly irradiated with the receiving end outside the sampling volume, and uses a light absorption material to manufacture a hollow light absorption space at a section directly opposite to the receiving end, the space is used for absorbing the light wave emitted by the transmitting end, thus being capable of effectively preventing the multiple scattering condition caused by the annular space and reducing the influence of the stray light on the visibility acceptance. The annular space can be used for wiring and placing electrical components, so that the whole visibility measuring device can measure the visibility in a space with good tightness, and the portable carrying purpose can be achieved.

Drawings

Fig. 1 is a schematic structural view of a conventional visibility measuring apparatus.

Fig. 2 is a schematic structural diagram of the present invention.

Reference numerals: the device comprises an emitting end 1, an emitting channel 2, an annular cavity 3, an outer shell 31, an annular space 32, an inner shell wall 33, a spherical space 34, a receiving end 4, a receiving channel 5, a light absorption space 6, a light absorption channel 7 and an atmosphere channel 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1, please refer to fig. 2, a portable visibility measuring device with high accuracy includes a transmitting end 1 and a receiving end 4; also included is an annular chamber 3; the annular cavity 3 comprises a spherical space 34 formed by an outer shell 31 and an inner shell wall 33 and an annular space 32 used for placing electric components such as a circuit board, a lead and the like, the annular space 32 of the device is reasonably used, so that the device is more convenient and more attractive to use, the transmitting end 1 (the length of the transmitting end 1 is preferably 60mm) and the receiving end 4 (the length of the receiving end 4 is preferably 180mm) are conveniently carried and arranged in the annular cavity 3 at an included angle, and the light absorption space 6 and the transmitting end 1 are arranged on the same axis; the launching channel 2 connected with the launching end 1 extends into the spherical space 34; the receiving channel 5 connected with the receiving end 4 extends into the spherical space 34, and the light absorption channel 7 connected with the spherical space 34 extends into the spherical space 34; the spherical space 34 is communicated with the outside atmosphere through the atmosphere passage 8, and the outer shell 31 is coated with a white coating to prevent excessive heating due to long-term exposure to sunlight, so that the operation of the internal system is unstable.

Specifically, the distance between the left end of the transmitting end 1 and the center of the sphere of the spherical space 34 is 90 mm.

The utility model arranges the transmitting end 1 and the receiving end 4 in the annular instrument (namely the annular cavity 3), thus reducing the influence of background light and other stray light on the visibility receiving end 4, designs a gas sampling space in the visibility measuring device, thus the light directly irradiated with the receiving end 4 can be blocked outside the sampling volume, and a section directly opposite to the receiving end 4 is made into a hollow light absorption space 6 by using a light absorption material, and the space has the function of absorbing the light wave emitted from the transmitting end 1, thus the utility model can effectively prevent the multiple scattering condition caused by the annular space and reduce the influence of the stray light on the visibility acceptance. The annular space 32 can be used for wiring and placing electrical components, so that the whole visibility measuring device can measure the visibility in a space with good tightness, and the portable carrying purpose can be achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-accuracy portable visibility measuring device comprises a transmitting end (1) and a receiving end (4); the method is characterized in that: also comprises an annular cavity (3);

wherein the annular chamber (3) comprises an annular space (32) and a spherical space (34) formed by an outer shell (31) and an inner shell wall (33);

the transmitting end (1) and the receiving end (4) form an included angle and are arranged in the annular cavity (3), and the light absorption space (6) and the transmitting end (1) are arranged on the same axis;

the transmitting channel (2) connected with the transmitting end (1) extends into the spherical space (34); a receiving channel (5) connected with the receiving end (4) extends into the spherical space (34), and a light absorption channel (7) connected with the spherical space (34) extends into the spherical space (34);

the spherical space (34) is communicated with the outside atmosphere through an atmosphere passage (8).

2. A highly accurate portable visibility measuring device as defined in claim 1, wherein: the length of the transmitting end (1) is 60 mm.

3. A highly accurate portable visibility measuring device as defined in claim 1, wherein: the length of the receiving end (4) is 180 mm.

4. A highly accurate portable visibility measuring device as defined in claim 1, wherein: the distance between the left end of the transmitting end (1) and the spherical center of the spherical space (34) is 90 mm.

5. A highly accurate portable visibility measuring device as defined in claim 1, wherein: the outer shell (31) is coated with a white coating.