Electromagnetic wave transmission experimental device for simulating sand storm environment

Abstract

The utility model discloses an electromagnetic wave transmission experimental device for simulating a sand storm environment, which comprises a sand leakage device and a simulation cylinder, the simulation cylinder is a cylindrical cylinder body with a closed lower end, the cylinder body is divided into an upper part and a lower part by a horizontally arranged sand leakage plate, and the upper end of the upper part is open; the sand leaking plate is a plate body, and holes for leaking sand are fully distributed in the plate body; air holes are fully distributed in a bottom plate body of the simulation cylinder; the outer side wall of the simulation cylinder and two opposite sides are respectively provided with a connecting port, each connecting port is provided with a horn antenna, and the horn mouth end of each horn antenna is communicated with the connecting port; a fan is arranged outside the simulation cylinder and below the simulation cylinder; and the sand leaking device is vertically arranged in the upper part of the simulation cylinder, comprises a sand containing barrel and a sand leaking pipe which are connected up and down, and is used for conveying sand to a sand leaking plate. According to the electromagnetic wave transmission experimental device for simulating the sand storm environment, the influence of different sandy soil concentrations on the antenna electromagnetic wave signal propagation process can be measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental device simulation, and in particular relates to an electromagnetic wave transmission experimental device for simulating a sandstorm environment. Background Art

[0002] During the movement, sand particles carry different amounts of positive or negative charges due to mutual contact and collision. These net charges will enhance the attenuation of electromagnetic waves by sand particles. People have begun to pay more attention to the propagation of microwaves in sandstorms, early warning monitoring of sandstorms, and the formation and transmission process of sandstorms. Based on the emission and transmission principles of electromagnetic radiation, remote sensing monitoring of sandstorms and atmospheric pollutants and measurement of internal structural parameters are currently very commonly used methods. The implementation of these technologies is closely related to the theoretical prediction accuracy of the influence of sand particles on the propagation process of light or electromagnetic wave signals. Design a set of experimental devices that are not restricted by the site and can effectively simulate sandstorms to simulate the influence of sandstorm environments on electromagnetic wave transmission. Utility Model Content

[0003] The utility model aims to provide an electromagnetic wave transmission experimental device for simulating a sandstorm environment, which can measure the influence of different sand concentrations on the propagation process of antenna electromagnetic wave signals.

[0004] The utility model adopts the following technical scheme: an electromagnetic wave transmission experimental device for simulating a sandstorm environment, comprising: a sand leakage device and a simulation cylinder, wherein:

[0005] The simulation tube is a cylindrical tube with a closed lower end. The tube is divided into two parts, an upper part and an lower part, by a horizontally arranged sand leakage plate. The upper end of the upper part is open. The sand leakage plate is a plate body, which is covered with holes for leaking sand. The bottom plate of the simulation tube is covered with air holes. A connection port is provided on the outer wall of the simulation tube and on both opposite sides. A horn antenna is installed on each connection port, and the horn end of each horn antenna is connected to the connection port. One of them is a transmitting antenna, and the other is a receiving antenna.

[0006] A fan is arranged outside the simulation cylinder and below the simulation cylinder, with an air outlet of the fan facing upwards, and is used to blow the wind that leaks sand into the simulation cylinder through the air outlet;

[0007] The sand leaking device is vertically arranged in the upper part of the simulation cylinder, and includes a sand bucket and a sand leaking pipe connected up and down. The sand bucket is a funnel-shaped shell structure with an open upper end. The sand leaking pipe is vertically arranged, and its upper end is connected to the lower end of the sand bucket, and its lower end is close to the sand leaking plate. The sand leaking pipe is used to transport sand to the sand leaking board.

[0008] Furthermore, a buffer port is provided on the upper side wall of the lower part of the simulation cylinder and close to the sand leakage plate, and the buffer port is used to guide the sand to the outside of the simulation cylinder.

[0009] Furthermore, a vibration motor is arranged on the sand draining plate to drive the sand draining plate to vibrate.

[0010] Furthermore, a dust collector is arranged outside the simulation cylinder, and the feed port of the dust collector is connected with the buffer port through a pipeline.

[0011] Furthermore, a plurality of dust concentration sensors are arranged on the inner side wall of the lower part of the simulation cylinder and at intervals around the inner side wall.

[0012] Furthermore, each dust concentration sensor, vibration motor, dust concentration sensor, dust collector and antenna are connected to the controller, and the controller is connected to the computer.

[0013] The beneficial effects of the utility model are as follows: 1. By filling the lower part of the simulation cylinder with sand of different concentrations and different particle sizes, the strength of the antenna electromagnetic wave signal under different sand and different particle sizes can be measured, and the influence of sand of different concentrations and different particle sizes on the antenna receiving signal can be studied. 2. The sand is evenly dispersed on the sand leakage plate of the sand leakage device through the operation of the vibration motor and the fan to prevent the sand leakage from clogging the sand leakage plate. 3. The average value of the dust concentration is measured by the concentration sensor and the controller, and the concentration is set by the computer to realize automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of an electromagnetic wave transmission experimental device that simulates a sandstorm environment;

[0015] Among them: 1. Sand leakage device; 2. Sand leakage plate; 3. Simulation cylinder; 4. Vibration motor; 5. Antenna; 6. Fan; 7. Dust collector; 8. Dust concentration sensor; 9. Controller; 10. Computer, 11. Bracket; 12. Buffer port. DETAILED DESCRIPTION

[0016] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0017] The utility model discloses an electromagnetic wave transmission experimental device simulating a sandstorm environment, such as Figure 1 As shown, it includes: a sand leaking device 1 and a simulation cylinder 3, wherein:

[0018] The simulation tube 3 is a cylindrical body with a closed lower end, and the body is divided into an upper part and a lower part by a horizontally arranged sand leakage plate 2, and the upper end of the upper part is open; the sand leakage plate 2 is a plate body, and the plate body is covered with holes for leaking sand; the bottom plate body of the simulation tube 3 is covered with wind holes; on the outer wall of the simulation tube 3, a connecting port is opened on both opposite sides, and each connecting port is respectively installed with a horn antenna 5, and the horn mouth end of each of the horn antennas 5 is connected to the connecting port; one of them is a transmitting antenna, and the other is a receiving antenna.

[0019] A fan 6 is arranged outside the simulation cylinder 3 and below the simulation cylinder 3 , with an air outlet facing upwards, for blowing wind to blow away the sand into the simulation cylinder 3 through the air outlet; the simulation cylinder 3 is fixed to the ground by a bracket 12 .

[0020] The sand leaking device 1 is vertically arranged in the upper part of the simulation cylinder 3, and includes a sand bucket and a sand leaking pipe connected up and down. The sand bucket is a funnel-shaped shell structure with an open upper end. The sand leaking pipe is vertically arranged, and its upper end is connected to the lower end of the sand bucket, and its lower end is close to the sand leaking plate 2. The sand leaking pipe is used to transport sand to the sand leaking plate 2.

[0021] A buffer port 12 is provided on the upper side wall of the lower part of the simulation cylinder 3 and near the sand leakage plate 2, and the buffer port 12 is used to guide the sand to the outside of the simulation cylinder 3. A vibration motor 4 is provided on the sand leakage plate 2 to drive the sand leakage plate 2 to vibrate.

[0022] A dust collector 7 is provided outside the simulation cylinder 3, and the feed port of the dust collector 7 is connected to the buffer port 12 through a pipeline. In the lower part of the simulation cylinder 3, sand is blown up by the fan 6 and fills the entire space of the lower part. Sand will reach the sand leakage plate 2. By providing the dust collector 7, excess sand enters the dust collector 7, preventing the sand from sinking in the simulation cylinder 3 and leaking out from the bottom of the simulation cylinder 3. The dust collector 7 is a conventional industrial dust collector.

[0023] A plurality of dust concentration sensors 8 are provided on the inner wall of the lower portion of the simulation cylinder 3 at intervals around the circumference thereof to measure the concentration of sand in the lower portion in real time.

[0024] Each dust concentration sensor 8, vibration motor 4, dust concentration sensor 8, dust collector 7 and antenna 5 are connected to controller 9, and controller 9 is connected to computer 10. Different concentration values ​​are set by computer 10, and controller 9 receives dust concentration value measured by dust concentration sensor 8 in real time, and measures the average value of dust concentration, and compares the average value with the set concentration value. If it is higher than the set concentration, the sand leakage device 1 stops leaking sand.

[0025] The utility model is an electromagnetic wave transmission experimental device for simulating a sandstorm environment. Sand is transported to a sand leakage plate 2 through a sand leakage device 1. A vibration motor 4 is started to drive the sand leakage plate 2 to vibrate. At the same time, the operation of a fan 6 makes the sand evenly dispersed on the sand leakage plate 2. Sand passes through the sand leakage plate 2 and enters the lower part of a simulation cylinder 3. In the lower part of the simulation cylinder 3, the sand is blown up by the fan 6 and dispersed in the entire space of the lower part. The dust concentration value is measured in real time by a dust concentration sensor 8, and the average value of the dust concentration is measured by a controller 9. The concentration is set by a computer 10. If the concentration measured by the dust concentration sensor 8 is higher than the set concentration, the sand leakage device 1 stops leaking sand. When different concentrations are dispersed in the simulation cylinder 3, the controller 9 measures different signal values ​​of the antenna 5.

Claims

1. An electromagnetic wave transmission experimental device for simulating a sandstorm environment, characterized in that: include: The sand leaking device (1) and the simulation cylinder (3) include: The simulation tube (3) is a cylindrical body with a closed lower end, and the body is divided into an upper part and a lower part by a horizontally arranged sand leakage plate (2), and the upper end of the upper part is open; the sand leakage plate (2) is a plate body, and the plate body is covered with holes for leaking sand; the bottom plate body of the simulation tube (3) is covered with wind holes; a connecting port is provided on the outer wall of the simulation tube (3) and on both opposite sides, and each of the connecting ports is respectively installed with a horn antenna (5), and the horn end of each of the horn antennas (5) is connected to the connecting port; one of them is a transmitting antenna, and the other is a receiving antenna; A fan (6) is arranged outside the simulation cylinder (3) and below the simulation cylinder (3), with an air outlet of the fan (6) facing upwards, and is used to blow wind that leaks sand into the simulation cylinder (3) through the air outlet; The sand leakage device (1) is vertically arranged in the upper part of the simulation cylinder (3), and comprises a sand bucket and a sand leakage pipe connected up and down, wherein the sand bucket is a funnel-shaped shell structure with an open upper end, and the sand leakage pipe is vertically arranged, wherein the upper end thereof is connected to the lower end of the sand bucket, and the lower end thereof is close to the sand leakage plate (2), and the sand leakage pipe is used to transport sand to the sand leakage plate (2).

2. The electromagnetic wave transmission experimental device for simulating a sandstorm environment as claimed in claim 1, characterized in that: A buffer port (12) is provided on the upper side wall of the lower part of the simulation cylinder (3) and close to the sand leakage plate (2). The buffer port (12) is used to guide sand to the outside of the simulation cylinder (3).

3. The electromagnetic wave transmission experimental device for simulating a sandstorm environment as claimed in claim 2, characterized in that: A vibration motor (4) is arranged on the sand draining plate (2) and is used to drive the sand draining plate (2) to vibrate.

4. The electromagnetic wave transmission experimental device for simulating a sandstorm environment as claimed in claim 3, characterized in that: A dust collector (7) is arranged outside the simulation cylinder (3), and a feed port of the dust collector (7) is connected to the buffer port (12) through a pipeline.

5. The electromagnetic wave transmission experimental device for simulating a sandstorm environment as claimed in claim 4, characterized in that: A plurality of dust concentration sensors (8) are arranged on the inner side wall of the lower part of the simulation cylinder (3) at intervals around the inner side wall.

6. The electromagnetic wave transmission experimental device for simulating a sandstorm environment as claimed in claim 5, characterized in that: Each of the dust concentration sensors (8), the vibration motor (4), the dust concentration sensor (8), the dust collector (7) and the antenna (5) is connected to a controller (9), and the controller (9) is connected to a computer (10).

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