WO2022000786A1

WO2022000786A1 - Radar box test device

Info

Publication number: WO2022000786A1
Application number: PCT/CN2020/114779
Authority: WO
Inventors: 吴熙; 黄晓光
Original assignee: 苏州苏试试验集团股份有限公司
Priority date: 2020-06-29
Filing date: 2020-09-11
Publication date: 2022-01-06
Also published as: CN111650569A

Abstract

A radar box test device (100); the radar box test device (100) comprises an environment box body (1), a vibration table (5), a moving device (8) provided at the bottom of the vibration table (5) and used for moving the vibration table (5), a sealing bottom plate (9) fixedly provided at the top of the vibration table (5), and a wave absorbing anechoic chamber (11) provided at one side of the environment box body (1); a wave transmitting door (14) is provided at one side of the environmental box body (1) close to the wave absorbing anechoic chamber (11); the vibration table (5) has a first state in which the vibration table is far away from the environment box body (1) and a second state in which the vibration table is moved to the environment box body (1); the bottom of the environment box body (1) is exposed; and when the vibration table (5) is in the second state, the sealing bottom plate (9) is sealed with the environment box body (1). The radar box test device (100) has a good detection effect, and allows for easy mounting of test pieces.

Description

A radar box test device

This application claims the priority of the Chinese patent application whose filing date is June 29, 2020, the application number is 202010607884.2, and the invention name is "a radar box test device", the entire contents of which are incorporated into this application by reference.

technical field

The invention relates to a radar box test device.

Background technique

Radars are often placed in harsh environments and inaccessible locations. Some radars need to complete the radio positioning function while moving, which puts forward higher requirements on the operational reliability of the radar. The operational reliability of the radar needs to be checked before the radar is put into use. detection.

The relative simulated environment of the existing detection device is relatively simple, and it is difficult to create a complex replacement that is closer to reality, and the installation of the test piece of the existing detection device is difficult.

In view of this, it is necessary to improve the existing radar box test device to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a radar box test device to solve the problems that the existing detection device has a single simulated environment and is difficult to install a test piece.

In order to achieve the above object, the present invention provides a radar box test device, the radar box test device includes an environmental box body, a vibration table, a mobile device arranged at the bottom of the vibration table for the vibration table to move, and a fixed device. The sealed bottom plate at the top of the vibrating table, the anechoic chamber arranged on one side of the environmental box body, the side of the environmental box body close to the anechoic chamber is provided with a wave-transmitting door, and the vibrating table is having a first state away from the environmental box body and a second state of moving below the environmental box body, the bottom of the environmental box body is exposed, and when the vibration table is in the second state, the sealed bottom plate Sealed with the environmental box body.

As a further improvement of the present invention, the environmental box body is provided with an openable door body in a direction perpendicular to the movement of the vibration table.

As a further improvement of the present invention, the environmental box is provided with a first step portion protruding from the bottom of the side walls on both sides of the door body, the sealing bottom plate is provided with a second step portion, and the vibration table is provided with a second step portion. When in the second state, the first step portion is located below the second step portion and is fastened with the second step portion to support the sealing bottom plate.

As a further improvement of the present invention, the bottom of the second step portion is provided with a sealing strip.

As a further improvement of the present invention, a water receiving device is provided on the side of the sealed bottom plate away from the environmental box body, and the width of the water receiving device is larger than the width of the door body, so that the vibration table is in the first position. In the second state, it resists the environmental box body.

As a further improvement of the present invention, the radar box test device further includes a first lifting device to raise or lower the vibration table.

As a further improvement of the present invention, the radar box test device further includes a second lifting device to lift or lower the sealing bottom plate.

As a further improvement of the present invention, the inner wall of the environmental box is provided with an air exchange duct.

As a further improvement of the present invention, a first wave absorbing layer is provided on the inner wall of the environmental box, and the first wave absorbing layer includes an aluminum substrate and a plurality of sharp cones fixed on the aluminum substrate.

As a further improvement of the present invention, the first wave-absorbing layer on the top of the environmental box body is in the height direction for the ventilation duct to communicate with the interior of the environmental box body.

As a further improvement of the present invention, the anechoic chamber has an opening opened toward the wave-transmitting door, and the radar box test device further includes a connection flange, the connection flange has a first end face and is spaced from the first end face The second end face is arranged and connected to the first end face, the shape of the second end face is the same as that of the first end face, and the area enclosed by the second end face is larger than the area enclosed by the first end face, so The first end face is fixedly connected to the side of the environmental box body with the wave-transmitting door, and the second end face is fixed to the anechoic chamber.

As a further improvement of the present invention, the anechoic chamber includes an inner liner, a second absorbing layer arranged inside the inner liner, a cooling pipe arranged outside the inner liner, and a partition arranged outside the cooling pipe. a heat layer, a cover disposed outside the heat insulation layer, and an antenna for receiving signals, the second wave absorbing layer surrounds a wave absorbing space, and the antenna extends from the wave absorbing space to the The outside of the anechoic chamber.

As a further improvement of the present invention, the radar box test device further includes a walking support fixed under the anechoic chamber to drive the anechoic chamber to approach or move away from the environmental box body.

As a further improvement of the present invention, the radar box test device further includes an environmental box unit connected to the environmental box body to change the temperature and humidity inside the environmental box body, and an environmental box unit that is electrically connected to the environmental box unit to An environmental box computer that controls the work of the environmental box unit, and a vibration power amplifier that is electrically connected to the vibration table.

The beneficial effects of the present invention are as follows: the radar box test device of the present invention can simulate a more realistic working environment by setting the environmental box body and the vibration table, and the detection effect is more accurate; Thereby, the test piece and tooling can be easily installed. The radar box test device of the invention has good detection effect and simple installation of the test piece.

Description of drawings

Fig. 1 is the structural representation of the radar box test device of the present invention;

2 is a schematic structural diagram of another angle of the radar box test device of the present invention;

3 is a schematic structural diagram of an environmental box body and a support frame of the radar box test device of the present invention;

Fig. 4 is the side sectional structure schematic diagram of the environmental box body of the radar box test device of the present invention;

5 is a schematic structural diagram of the third angle of the radar box test device of the present invention;

6 is a schematic structural diagram of the fourth angle of the radar box test device of the present invention;

7 is a schematic structural diagram of the first wave absorbing layer of the radar box test device of the present invention;

Fig. 8 is the structural schematic diagram of the anechoic chamber of the radar box test device of the present invention;

9 is a schematic structural diagram of the inner bladder and the cooling pipe of the anechoic chamber of the radar box test device of the present invention;

FIG. 10 is a schematic structural diagram of the connecting flange of the radar box test device of the present invention.

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 to FIG. 10 , the radar box test device 100 of the present invention includes an environmental box body 1 and an environmental box unit connected to the environmental box body 1 to change the temperature and humidity inside the environmental box box 1 2. The environmental box computer 3 electrically connected to the environmental box unit 2 to control the work of the environmental box unit 2, the support frame 4 supporting the environmental box body 1, the vibrating table 5, and the vibrating table 5 Electrically connected vibration power amplifier 6, a first lifting device for raising or lowering the vibration table 5, a mobile device 8 arranged at the bottom of the vibration table 5 for the vibration table 5 to move, fixed on the vibration table 5 The sealing bottom plate 9 on the top of the vibration table 5, the second lifting device 10 for raising or lowering the sealing bottom plate 9, the anechoic chamber 11 arranged on one side of the environmental box body 1, the anechoic chamber 11 fixed on the Below the anechoic chamber 11 , the anechoic chamber 11 is driven close to or away from the walking bracket 12 of the environmental box body 1 , and the connecting flange 13 for connecting the environmental box body 1 and the anechoic chamber 11 .

As shown in FIG. 2 to FIG. 5 , the bottom of the environmental box body 1 is exposed, and the environmental box body 1 includes a wave-transmitting door 14 close to the side of the anechoic chamber 11 and is perpendicular to the vibration table 5 . The door body 15 which can be opened in the moving direction, the first step part 16 protruding from the bottom of the side walls on both sides of the door body 15, the air exchange duct 17 provided on the inner wall, the The first absorbing layer 18.

In this embodiment, the wave-transmitting door 14 and the door body 15 are disposed on opposite sides of the environmental box body 1 . The wave-transmitting door 14 is exposed from the first wave-absorbing layer 18 in the environmental box body 1 for penetration of radar waves, and at the same time the environmental box body 1 is sealed to ensure the environmental box The humidity and temperature in the box 1 are constant.

In this embodiment, the door body 15 is a side-by-side door. When the door body 15 is opened, the test piece on the vibration table 5 passes through to enter the environmental box body 1 .

As shown in FIG. 4 to FIG. 7 , the ventilation duct 17 is communicated with the environmental box unit 2 to control the temperature and humidity in the environmental box body 1 . In this embodiment, the air exchange duct 17 is disposed on one side wall of the adjacent door body 15, and the other side wall opposite to the air exchange duct 17 is provided with a lead hole for the test cable to pass through. It is connected with the test piece in the environmental box body 1.

In this embodiment, the air exchange air duct 17 includes an air return port 171 provided below the side wall and an air outlet 172 provided above the side wall.

The first wave absorbing layer 18 includes an aluminum substrate 181 and a plurality of sharp cones 182 fixed on the aluminum substrate 181. The plurality of sharp cones 182 can increase the wave absorbing area, and the aluminum substrate 181 is provided with threaded holes The first wave absorbing layer 18 is fixed on the environmental box body 1 by threading. The pointed cone 182 is made of silicon carbide material.

In this embodiment, the first wave absorbing layer 18 includes a first part 183 disposed on the side walls of the door body 15 on both sides, a second part 184 and a third part disposed on the top of the environmental box body 1 . 185. A fourth portion 186 disposed at the bottom of the environmental box body 1.

The first portion 183 is in the shape of a right-angled trapezoid, and is inclined from bottom to top toward the side of the door body 15 , and the right-angled side is connected to the side where the wave-transmitting door 14 is provided. The first portion 183 only covers the range that can be irradiated by radar waves, so that the area of the first wave absorbing layer 18 can be reduced and the cost can be saved.

The first wave absorbing layer 18 on the top of the environmental box body 1 is in the height direction for the air exchange air duct 17 on the top to communicate with the interior of the environmental box body 1 . Specifically, the second portion 184 is disposed close to the wave-transmitting gate 14 , the third portion 185 is disposed away from the wave-transmitting gate 14 , and an end of the third portion 185 close to the second portion 184 is low The second portion 184 is disposed at an interval from the second portion 184 , and the interval portion avoids the air outlet 172 .

The first lifting device is an electric lift, which can adjust the up and down position of the vibration table 5 .

The vibrating table 5 has a first state of being away from the environmental box body 1 and a second state of being moved below the environmental box body 1 . The switching between the first state and the second state is realized by the mobile device 8 .

When the vibration table 5 is in the first state, tooling and test pieces can be installed on the sealing bottom plate 9, and when the vibration table 5 is in the second state, the sealing bottom plate 9 is sealed with the environmental box body 1. , at this time the tooling and the test piece are located in the environmental box body 1 .

As shown in FIG. 2 , the sealing bottom plate 9 is provided with a second step portion 91, and the second step portion 91 extends outward from both sides of the sealing bottom plate 9. When the vibration table 5 is in the second state, The first step portion 16 is located below the second step portion 91 and is fastened with the second step portion 91 to support the sealing bottom plate 9 . The bottom of the second step portion 91 is provided with a sealing strip. When the second step portion 91 is in abutment with the first step portion 16, the sealing strip plays a sealing role to prevent the outside temperature and humidity from affecting all parts. The influence in the environmental box body 1 is described.

When the sealing bottom plate 9 needs to be separated from the environmental box body 1, the second lifting device 10 is controlled to slightly raise the sealing bottom plate 9, and then the moving device 8 controls the vibration table 5 and the sealing bottom plate 9 to face Move away from the direction of the environmental box body 1 . The sealing bottom plate 9 may also be provided with a fine adjustment device to adjust the relative position with the side wall of the environmental box body 1 to prevent contact. When sealing is required, the sealing bottom plate 9 is moved into the environmental box body 1, and the lifting force of the second lifting device 10 is removed. Under the action of gravity, the second step portion 91 and the first step portion 16 Resist each other to achieve a sealing effect.

The side of the sealing bottom plate 9 away from the environmental box body 1 is provided with a water receiving device 92, and the width of the water receiving device 92 is larger than the width of the door body 15, so that the vibration table 5 is in the second position. In the state, it abuts against the environmental box body 1, so as to play a positioning role when the vibration table 5 moves.

As shown in FIG. 8 to FIG. 9 , the anechoic chamber 11 has an opening 111 opened toward the wave-transmitting door 14 , the anechoic chamber 11 includes an inner tank 112 , and a second absorbing tank arranged inside the inner tank 112 . The layer 113, the cooling pipe 114 arranged outside the inner tank 112, the thermal insulation layer arranged outside the cooling pipe 114, the cover 115 arranged outside the thermal insulation layer, and the antenna for receiving signals, so The second absorbing layer 113 surrounds an absorbing space, and the antenna extends from the absorbing space to the outside of the anechoic chamber 11 .

The inner container 112 is made of silicon carbide material, which can play a supporting role and has high strength.

The second absorbing layer 113 is used for absorbing the radar waves entering the anechoic chamber 11 , and the structure of the second absorbing layer 113 is the same as that of the first absorbing layer 18 .

A circulating cooling liquid is introduced into the cooling pipe 114 to absorb the heat generated by the second wave absorbing layer 113 after absorbing the radar wave, so as to prevent the temperature from being too high.

The thermal insulation layer is used to insulate the cooling pipe 114 and the cover 115 from the danger of heat transfer to the cover 115 .

The anechoic chamber 11 is provided with a connection hole for the antenna to be drawn out of the anechoic chamber 11. The connection hole includes a first connection hole formed on the inner tank 112 and a second connection hole formed on the sealing plate. The first connection holes and the second connection holes are arranged in a staggered manner, so that radar wave leakage can be prevented.

As shown in FIG. 10 , the connecting flange 13 has a first end surface 131 and a second end surface 132 spaced from the first end surface 131 and connected to the first end surface 131 . The shape of the second end surface 132 Same as the first end surface 131 , the area enclosed by the second end surface 132 is larger than the area enclosed by the first end surface 131 , and the first end surface 131 and the environmental box body 1 are provided with a wave-transmitting door One side of the 14 is fixedly connected, and the second end surface 132 is fixed to the anechoic chamber 11 . The second end face 132 is set larger than the first end face 131 , so that radar waves can be prevented from being irradiated on the second end face 132 . The first end surface 131 and the second end surface 132 are respectively connected to the environmental box body 1 and the anechoic chamber 11 through bolts.

The use process of the radar box test device 100 of the present invention is as follows:

Open the door body 15, the second lifting device 10 lifts the sealing bottom plate 9, and the fine adjustment adjusts the relative position of the sealing bottom plate 9 and the environmental box body 1;

The moving device 8 moves the vibrating table 5 and the sealing bottom plate 9 away from the environmental box body 1;

Clamping tooling and test pieces are mounted on the sealing bottom plate 9;

The moving device 8 moves the vibrating table 5 and the sealing bottom plate 9 toward the environmental box body 1 until the water receiving device 92 abuts against the environmental box body 1;

The fine adjustment device adjusts the sealing bottom plate 9 and the environmental box body 1 until the second step portion 91 is parallel to the first step portion 16 ;

Remove the lifting force of the second lifting device 10, so that the sealing bottom plate 9 and the environmental box body 1 are sealed to each other;

Close the door body 15 to seal the environmental box body 1;

Pass the cooling liquid into the cooling pipe 114;

Start the environment box computer 3, and control the environment box unit 2 to provide the temperature and humidity required to simulate the needs in the environment box body 1;

Start the radar, start the test, the antenna reads the radar signal and transmits it;

Analyze the signal and get the test result.

The radar box test device 100 of the present invention can simulate a more realistic working environment by setting the environmental box body 1 and the vibration table 5, and the detection effect is more accurate; It is convenient to install the test piece and tooling; the wave-transmitting door 14 is arranged to facilitate the penetration of radar waves, and at the same time, the environmental box body is sealed. The radar box test device 100 of the present invention has good detection effect and simple installation of the test piece.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

Claims

A radar box test device is characterized in that: the radar box test device includes an environmental box body, a vibration table, a mobile device arranged at the bottom of the vibration table for the vibration table to move, and a mobile device fixed on the vibration table. The sealed bottom plate on the top of the table, the anechoic chamber arranged on one side of the environmental box body, the side of the environmental box box close to the anechoic chamber is provided with a wave-transmitting door, and the vibrating table has a space far away from the anechoic chamber. The first state of the environmental box body and the second state of moving to the bottom of the environmental box body, the bottom of the environmental box body is exposed, and when the vibration table is in the second state, the sealed bottom plate and the environment The box body is sealed.
The radar box test device according to claim 1, wherein the environmental box body is provided with an openable door in a direction perpendicular to the movement direction of the vibration table.
The radar box test device according to claim 2, wherein the environmental box is provided with a first step portion protruding toward each other at the bottom of the side walls on both sides of the door body, and the sealing bottom plate is provided with a first step portion. Two stepped portions, when the vibration table is in the second state, the first stepped portion is located below the second stepped portion and is buckled with the second stepped portion to support the sealing bottom plate.
The radar box test device according to claim 3, wherein the bottom of the second step portion is provided with a sealing strip.
The radar box test device according to claim 3, wherein a water receiving device is provided on the side of the sealed bottom plate away from the environmental box body, and the width of the water receiving device is greater than the width of the door body , so as to resist the environment box body when the vibration table is in the second state.
The radar box test device according to claim 1, wherein the radar box test device further comprises a first lifting device to raise or lower the vibration table.
The radar box test device according to claim 1, wherein the radar box test device further comprises a second lifting device to lift or lower the sealing bottom plate.
The radar box test device according to claim 1, wherein the inner wall of the environmental box is provided with an air exchange duct.
The radar box test device according to claim 8, wherein a first wave absorbing layer is provided on the inner wall of the environmental box box, and the first wave absorbing layer comprises an aluminum substrate and is fixed on the aluminum substrate of multiple cones.
The radar box test device according to claim 9, wherein the first wave-absorbing layer on the top of the environmental box is in the height direction for the ventilation duct to communicate with the inside of the environmental box .
The radar box test device according to claim 1, wherein the anechoic chamber has an opening opened toward the wave-transmitting door, the radar box test device further comprises a connecting flange, and the connecting flange has a first an end face and a second end face spaced from the first end face and connected to the first end face, the shape of the second end face is the same as that of the first end face, and the area enclosed by the second end face is larger than the The area enclosed by the first end surface, the first end surface is fixedly connected with the side of the environmental box body with the wave-transmitting door, and the second end surface is fixed with the anechoic chamber.
The radar box test device according to claim 11, wherein the anechoic chamber comprises an inner liner, a second absorbing layer arranged inside the inner liner, a cooling pipe arranged outside the inner liner, The heat insulation layer arranged outside the cooling pipe, the cover arranged outside the heat insulation layer, and the antenna for receiving signals, the second wave absorbing layer is surrounded to form a wave absorbing space, and the antenna is formed from the The absorbing space extends to the outside of the anechoic chamber.
The radar box test device according to claim 1, characterized in that: the radar box test device further comprises a walking bracket fixed under the anechoic chamber to drive the anechoic chamber to be close to or away from the environmental box body .
The radar box test device according to claim 1, wherein the radar box test device further comprises an environmental box unit connected with the environmental box body to change the temperature and humidity inside the environmental box body, and The environmental box unit is electrically connected to an environmental box computer for controlling the work of the environmental box unit, and a vibration power amplifier is electrically connected to the vibration table.