CN218180673U

CN218180673U - Transmission-type atmospheric visibility measuring device receiving end with four-dimensional alignment capability

Info

Publication number: CN218180673U
Application number: CN202222314448.3U
Authority: CN
Inventors: 徐建民; 杨敏山; 郭永欣; 高鹏彬; 李超; 步云涛
Original assignee: Tianjin Xinlong Technology Development Co ltd
Current assignee: Tianjin Xinlong Technology Development Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-30
Anticipated expiration: 2032-08-31

Abstract

The utility model provides a transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability, including convergent lens, half-wave plate, polarization beam splitter prism, camera, concave lens, power energy meter probe and electronic displacement platform, convergent lens, half-wave plate, polarization beam splitter prism, camera set one row to, concave lens and power energy meter probe's receiving port is towards polarization beam splitter prism's plane of reflection, concave lens is located between power energy meter probe and the polarization beam splitter prism, one or two in convergent lens and the camera are installed on electronic displacement platform. The utility model discloses a light spot's removal feedback on the camera photosurface can judge the rotation of receiving terminal, every single move, control translation and four dimension information of translation from top to bottom to ensure the alignment of transmitting terminal and receiving terminal.

Description

Transmission-type atmospheric visibility measuring device receiving end with four-dimensional alignment capability

Technical Field

The utility model belongs to the technical field of atmospheric visibility measures, in particular to transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability.

Background

Atmospheric visibility and airport runway visibility are important meteorological elements for ensuring normal operation of an airport. The atmospheric transmittance used for calculating the atmospheric visibility and the visual range of the airport runway is an important physical quantity, and has wide application in the fields of meteorology, traffic, military, metrological verification and the like. Visibility measuring instruments adopting a transmission type measuring mode are often called as atmospheric transmissometers and are recognized as more accurate atmospheric visibility measuring instruments at present. Compared with a forward scattering visibility meter, the atmospheric transmission meter directly measures atmospheric absorption and scattering between the transmitting end and the receiving end to obtain atmospheric transmittance, and then the extinction coefficient and visibility data are calculated.

The transmission-type visibility measuring device comprises an emitting end and a receiving end. During the installation process of the device, the transmitting end and the receiving end are firstly aligned manually and fixed. And then the transmitting end collimates and transmits the beam of light, the light is transmitted to a receiving end detector through the atmosphere, and the receiving end obtains the atmospheric transmittance by measuring the detected light intensity and comparing the detected light intensity with the light intensity emitted by the transmitting end, so that the atmospheric extinction coefficient is obtained according to the Lambert beer law. However, in case of vibration or disturbance generated in the external environment, the precise alignment between the transmitting end and the receiving end directly affects the performance of the transmission-type visibility measuring apparatus, and even under some high-intensity vibration, the receiving end may lose the detection signal. This limits the continuous acquisition of extinction coefficients and visibility values.

Disclosure of Invention

The utility model discloses to the technical problem who exists among the prior art, provide a transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability, through the removal feedback of facula on the camera photosurface, can judge four dimension information of rotation, every single move, left and right translation and the up-down translation of receiving terminal to ensure the alignment of transmitting terminal and receiving terminal.

The utility model adopts the technical proposal that: a receiving end of a transmission type atmospheric visibility measuring device with four-dimensional alignment capability comprises a converging lens, a half-wave plate, a polarization beam splitter prism, a camera, a concave lens, a power energy meter probe and an electric displacement platform, wherein the converging lens, the half-wave plate, the polarization beam splitter prism and the camera are arranged in a row, receiving ports of the concave lens and the power energy meter probe face to a reflecting surface of the polarization beam splitter prism, the concave lens is located between the power energy meter probe and the polarization beam splitter prism, and one or two of the converging lens and the camera are installed on the electric displacement platform.

Further, the number of the electric displacement tables is 1-2.

The working principle is as follows: the utility model discloses can assemble received space transmission light beam on the camera photosurface through lens. And when the position of the camera is kept still, the information of the pitching and horizontal rotation angles of the receiving end is fed back through the deviation of the light spot on the photosensitive surface. The spatial distribution of light spots is scanned by axially moving the photosensitive surface of the camera or axially moving the converging lens, and two-dimensional information of left-right translation in the horizontal plane of the receiving end device and up-down translation in the vertical plane perpendicular to the light beam direction is obtained, so that the posture feedback of the receiving end with four dimensions is realized. And the four-dimensional position information is fed back to the automatic control adjusting device, so that the full-automatic adjustment of four dimensions of pitching, horizontal rotation, left-right and up-down translation of the receiving end is realized, the receiving end is accurately aligned to the light beam transmitted by the transmitting end through the air, and the atmospheric transmittance is accurately calculated.

Compared with the prior art, the utility model discloses the beneficial effect who has is: the utility model discloses a camera, through axial displacement camera photosurface or axial displacement convergent lens, the spatial distribution of scanning facula, through the mobile feedback of facula on the camera photosurface, judge the every single move of receiving terminal, horizontal rotation, the information of four dimensions of translation and upper and lower translation to can make the adjustment to the position of receiving terminal, aim at the transmitting terminal through air transmission's light beam with the receiving terminal accuracy, the accurate atmospheric permeability that calculates, thereby obtain accurate atmospheric visibility.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of embodiment 3 of the present invention;

fig. 4 is a schematic view of forward movement of the camera under the condition that the receiving end of the present invention vertically translates upwards according to embodiment 3 of the present invention;

fig. 5 is a schematic diagram of backward movement of the converging lens under the condition of vertical upward translation of the receiving end of the embodiment 3 of the present invention.

In the figure: the device comprises a 1-convergent lens, a 2-electric displacement platform A, a 3-half-wave plate, a 4-polarization beam splitter prism, a 5-camera, a 6-electric displacement platform B, a 7-concave lens and an 8-power energy meter probe.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Example 1

An embodiment of the utility model provides a transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability, as shown in fig. 1, it is including convergent lens 1, half-wave plate 3, polarization beam splitter 4, camera 5, concave lens 7, power energy meter probe 8 and electronic displacement platform A2. The converging lens 1, the half-wave plate 3, the polarization beam splitter prism 4 and the camera 5 are sequentially arranged in a row, the receiving ports of the concave lens 7 and the power energy meter probe 8 face the reflecting surface of the polarization beam splitter prism 4, and the concave lens 7 is located between the power energy meter probe 8 and the polarization beam splitter prism 4. The convergent lens 1 is arranged on the electric displacement platform A2, and the electric displacement platform A2 is used for controlling the convergent lens 1 to move back and forth and changing the distance between the convergent lens 1 and the camera 5.

Example 2

An embodiment of the utility model provides a transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability, as shown in fig. 2, it is including convergent lens 1, half-wave plate 3, polarization beam splitter 4, camera 5, concave lens 7, power energy meter probe 8 and electronic displacement platform B6. The converging lens 1, the half-wave plate 3, the polarization beam splitter prism 4 and the camera 5 are sequentially arranged in a row, the receiving ports of the concave lens 7 and the power energy meter probe 8 face the reflecting surface of the polarization beam splitter prism 4, and the concave lens 7 is located between the power energy meter probe 8 and the polarization beam splitter prism 4. The camera 5 is mounted on an electric displacement table B6, and the electric displacement table B6 is used for controlling the camera 5 to move back and forth and changing the distance between the convergent lens 1 and the camera 5.

Example 3

An embodiment of the utility model provides a transmission-type atmospheric visibility measuring device receiving terminal with four-dimensional alignment ability, as shown in fig. 3, it is including convergent lens 1, half-wave plate 3, electronic displacement platform A2, polarization beam splitter 4, camera 5, electronic displacement platform B6, concave lens 7 and power energy meter probe 8. The converging lens 1, the half-wave plate 3, the polarization beam splitter prism 4 and the camera 5 are sequentially arranged in a row, the receiving ports of the concave lens 7 and the power energy meter probe 8 face the reflecting surface of the polarization beam splitter prism 4, and the concave lens 7 is located between the power energy meter probe 8 and the polarization beam splitter prism 4. The convergent lens 1 is arranged on the electric displacement platform A2, and the electric displacement platform A2 is used for controlling the convergent lens 1 to move back and forth. The camera 5 is mounted on an electric displacement table B6, and the electric displacement table B6 is used for controlling the camera 5 to move back and forth.

And (3) pitching judgment of the receiving end:

when the receiving end is changed in pitch, the receiving end converging lens 1 is also integrally tilted, so that the incident light ray is changed up and down relative to the incident inclination angle of the converging lens 1. And the converging light spot is positioned on the light sensing surface of the camera 5 in the focal plane of the converging lens 1 and moves vertically upwards or downwards along with the integral pitching of the receiving end. The pitch angle of the receiving end can be calculated by the vertical moving distance of the light spot on the light sensing surface of the camera 5.

And (3) rotation judgment of a receiving end:

when the receiving end rotates horizontally in one dimension, the converging lens 1 of the receiving end rotates integrally therewith, so that the incident light changes left and right relative to the incident inclination angle of the converging lens 1. And the converging light spot horizontally moves leftwards or rightwards along with the integral rotation of the receiving end on the light sensing surface of the camera 5 positioned on the focal plane of the converging lens 1. The horizontal rotation angle of the receiving end can be calculated by the horizontal movement distance of the light spot on the light sensing surface of the camera 5.

Judging the up-down translation of the receiving end:

when the receiving end is vertically translated up and down in one dimension, the receiving end converging lens 1 is vertically moved up and down along with the receiving end converging lens. The convergent lens 1 or the camera 5 is moved back and forth, and the up-and-down translation of the receiving end can be judged by observing the light spot movement feedback through the light sensing surface of the camera 5. When the convergent lens 1 or the camera 5 is moved back and forth by adopting an electric displacement platform, the convergent light spot on the photosensitive surface of the camera 5 can be moved up and down along with the change of the size of the light spot. When the receiving end does not move up and down, the convergent lens 1 or the camera 5 is moved back and forth, and the light spot only changes in size and does not move up and down or move left and right.

In the case of a vertical upward translation of the receiving end. As shown in fig. 4-5, after the receiving end is translated vertically upward, the position of the incoming ray changes from a solid line to a dashed line. As the camera 5 moves forward closer to the converging lens 1, the spot size on the photosensitive surface increases and the camera 5 moves from the solid line position to the broken line position as the spot translates downward, as shown in fig. 4. When the camera 5 is far away from the convergent lens 1, the size of the light spot on the photosensitive surface is reduced, and the light spot is translated upwards along with the light spot. As the converging lens 1 moves backward closer to the camera 5, the spot size on the photosensitive surface of the camera 5 increases and then translates downward, as shown in fig. 5, and the converging lens 1 moves from the solid line position to the dotted line position. As the focusing lens 1 moves away from the camera 5, the spot size on the light-sensitive surface of the camera 5 decreases and is translated upward. Through the size of the light spot and the moving position, the upward movement displacement of the receiving end can be calculated.

In the case where the receiving end is translated vertically downward. When the camera 5 moves forwards to approach the convergent lens 1, the size of a light spot on the photosensitive surface is increased and the light spot moves upwards along with the forward movement of the light spot; when the camera 5 is far away from the convergent lens 1, the size of the light spot on the photosensitive surface is reduced, and the light spot is translated downwards along with the light spot. During the backward movement of the convergent lens 1 approaching the camera 5, the light spot size on the light-sensitive surface of the camera 5 becomes larger, and then is translated upwards. As the focusing lens 1 moves away from the camera 5, the spot size on the light-sensitive surface of the camera 5 decreases and consequently translates downward. And the displacement of the downward movement of the receiving end can be calculated through the size and the moving position of the light spot.

Judging the left and right translation of the receiving end:

when the receiving end is translated left and right in one dimension, the collecting lens 1 of the receiving end moves left and right integrally. The convergent lens 1 or the camera 5 is moved back and forth, and the left and right translation of the receiving end can be judged by observing the light spot movement feedback through the light sensing surface of the camera 5. When the convergent lens 1 or the camera 5 is moved back and forth by adopting the electric displacement table, the convergent light spot on the light sensing surface of the camera 5 can be horizontally moved left and right along with the change of the size of the light spot. When the receiving end does not translate left and right, the convergent lens 1 or the camera 5 is moved back and forth, and the light spot only changes in size and does not translate up and down or left and right.

In the case of a translation of the receiving end to the left. When the camera 5 moves forward to approach the convergent lens 1, the size of the light spot on the photosensitive surface increases and the light spot is translated leftward along with the increase. When the camera 5 is far away from the convergent lens 1, the size of the light spot on the photosensitive surface is reduced, and the light spot is translated to the right along with the reduction of the size of the light spot. During the backward movement of the convergent lens 1 approaching the camera 5, the light spot size on the light-sensitive surface of the camera 5 becomes larger, and consequently, the light spot size is translated leftward. As the focusing lens 1 moves away from the camera 5, the spot size on the light-sensitive surface of the camera 5 decreases and is translated to the right. And the displacement of the receiving end moving leftwards can be calculated through the size of the light spot and the moving position.

In the case where the receiving end is translated to the right. When the camera 5 moves forwards to approach the convergent lens 1, the size of a light spot on the photosensitive surface is increased and the light spot translates rightwards along with the increase of the size of the light spot; when the camera 5 is far away from the convergent lens 1, the size of the light spot on the photosensitive surface is reduced, and the light spot is translated leftwards along with the reduction. During the backward movement of the convergent lens 1 approaching the camera 5, the light spot size on the light-sensitive surface of the camera 5 becomes larger, and then the light spot size is translated to the right. As the focusing lens 1 moves away from the camera 5, the spot size on the light-sensitive surface of the camera 5 decreases and consequently shifts to the left. And the displacement of the receiving end moving rightwards can be calculated through the spot size and the moving position.

The electric displacement platform A2, the electric displacement platform B6 and the camera 5 are all connected with a computer, and the computer adjusts the position of a receiving end through an automatic control adjusting device according to the deviation feedback of light spots on the photosensitive surface of the camera 5. The receiving end is placed on the automatic control adjusting device, and the automatic control adjusting device controls pitching, horizontal rotation, left-right translation and up-down translation of the receiving end.

The present invention has been described in detail with reference to the embodiments, but the embodiments are only exemplary embodiments of the present invention and should not be considered as limiting the scope of the present invention. The protection scope of the present invention is defined by the claims. Technical scheme, or technical staff in the field is in the utility model technical scheme's inspiration under the utility model discloses a substantial and protection scope, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change that application scope was made and improve etc. all should still belong to the utility model discloses a patent covers within the protection scope.

Claims

1. A transmissive atmospheric visibility measuring device receiving end with four-dimensional alignment capability, comprising: the power energy meter comprises a converging lens, a half-wave plate, a polarization splitting prism, a camera, a concave lens, a power energy meter probe and an electric displacement platform, wherein the converging lens, the half-wave plate, the polarization splitting prism and the camera are arranged in a row, receiving ports of the concave lens and the power energy meter probe face to a reflecting surface of the polarization splitting prism, the concave lens is positioned between the power energy meter probe and the polarization splitting prism, and one or two of the converging lens and the camera are arranged on the electric displacement platform.

2. The receiving end of a transmissive atmospheric visibility measuring device with four-dimensional alignment capability of claim 1, wherein: the number of the electric displacement tables is 1-2.