CN215986470U - Temperature and humidity box - Google Patents
Temperature and humidity box Download PDFInfo
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- CN215986470U CN215986470U CN202122199315.1U CN202122199315U CN215986470U CN 215986470 U CN215986470 U CN 215986470U CN 202122199315 U CN202122199315 U CN 202122199315U CN 215986470 U CN215986470 U CN 215986470U
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Abstract
The utility model relates to the technical field of radar performance testing, and discloses a temperature and humidity box which is arranged in a microwave darkroom and comprises a box body; the box body is a hollow cavity surrounded by an insulating layer; the box body is provided with a temperature control device and a humidity control device and is used for controlling temperature parameters and humidity parameters in the box body; one side surface of the box body is a spherical wave-transmitting heat-insulating layer; in a use state, the radar to be detected is arranged at the center of the sphere of the spherical wave-transparent heat-insulating layer. The utility model can adjust the environmental parameters of the radar to be tested arranged in the box body, accurately meets the performance test of the radar to be tested under the given temperature and the given humidity, and improves the accuracy and the effectiveness of the radar test.
Description
Technical Field
The utility model relates to the technical field of radar performance testing, in particular to a temperature and humidity box.
Background
Environmental parameters of the automobile are changed continuously during driving, for example, temperature and humidity change when the automobile crosses different areas, and the radar performance is affected. How to consider the influence of temperature and humidity changes on radar performance in the test process is a problem which needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a temperature and humidity box capable of testing radar performance of a radar in a given temperature range and a given humidity range.
The utility model discloses a temperature and humidity box, which is arranged in a microwave darkroom and comprises: a box body; the box body is a hollow cavity surrounded by an insulating layer; the box body is provided with a temperature control device and a humidity control device and is used for controlling temperature parameters and humidity parameters in the box body; one side surface of the box body is a spherical wave-transmitting heat-insulating layer; in a use state, the radar to be detected is arranged at the center of the sphere of the spherical wave-transparent heat-insulating layer.
Further, the temperature and humidity box also comprises a control system; the control system is arranged outside the box body and is connected with the temperature control device and the humidity control device through electric signals.
Further, in the above temperature and humidity box, the spherical wave-transparent heat-insulating layer is made of a hard foam layer with a dielectric constant lower than 1.1.
Further, in the temperature and humidity box, the temperature control range of the temperature control device is-45 ℃ to +85 ℃; the humidity control range of the humidity control device is 10% -90%.
Furthermore, the temperature and humidity box also comprises a rotating mechanism; the rotating mechanism comprises a rotary table, a swing arm and an upright post; the rotary table is arranged below the spherical wave-transparent heat-insulating layer; the swing arm is arranged along the horizontal direction and comprises a first connecting end and a second connecting end, and the first connecting end is connected with the rotary table and is used for rotating within a given angle range of the horizontal plane under the driving of the rotary table; the upright post is fixedly connected with the second connecting end of the swing arm, and a radio frequency front end is arranged at the top of the upright post.
Further, in the above-mentioned humiture box, the stand is provided with telescopic machanism for the angle of pitch of height and use radar as the centre of a circle of vertical direction along the stand is adjusted.
Further, in the above-mentioned humiture case, the length of swing arm along the horizontal direction is adjustable.
Furthermore, the temperature and humidity box also comprises a wave absorption plate; the wave-absorbing plates are arranged on the side and the rear of the upright post.
The utility model has the following advantages:
first aspect, the box is the temperature maintenance structure, puts into wherein the back when the radar that awaits measuring, can be according to the test needs, provides the box internal temperature that satisfies the requirement for the radar that awaits measuring. But more importantly, because the box of humiture case is provided with at least one sphere wave-transparent heat preservation, this heat preservation not only can realize the heat preservation function, still has very high wave-transparent rate. Therefore, when the radar performance test is carried out, the radar to be tested does not need to be taken out like the prior art, and the spherical wave-transparent heat-insulating layer has almost no influence on the sending and receiving of radar signals. Therefore, the performance of the radar can be tested at different environmental temperatures, and the testing accuracy is greatly improved; in addition, compared with the plane wave-transmitting heat-insulating layer, the spherical wave-transmitting heat-insulating layer avoids the defect of test error caused by further refraction generated by medium change after radar electromagnetic waves encounter the plane heat-insulating layer, so that the performance test of the radar to be tested is more accurate and reliable
In the second aspect, since the box body is provided with the humidity control device, the humidity in the box body is adjusted by pumping appropriate water, and the humidity test condition is achieved.
The utility model can adjust the environmental parameters of the radar to be tested arranged in the box body, and accurately meet the test of the performance parameters of the radar to be tested at the given temperature and the given humidity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of a temperature and humidity box according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
fig. 4 is a schematic structural diagram of a rotating mechanism in the embodiment of the temperature and humidity box according to the present invention, in which one wave absorbing plate is removed.
Wherein:
1 case body
2 spherical wave-transparent heat-insulating layer
3 control system
4 rotating platform
5 swing arm
6 upright post
7 radio frequency front end
8 wave absorbing plate
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
During driving, the area covered by the automobile may be very large, for example, the automobile may run in an extremely cold area sometimes and in a hot area sometimes. It should be noted that the change of the ambient temperature has an influence on the detection performance of the radar, which affects the safety of the vehicle. Therefore, when testing the radar, the environment temperature is required to be used as a variable to test a plurality of temperatures within a possible temperature range respectively, so as to refine the performance of the radar.
In terms of the present, the solution for testing the performance of the radar at different temperatures is to place the radar to be tested in a container capable of temperature control, and to take out the radar from the container to be tested for rapid measurement when the temperature of the radar to be tested reaches a target test temperature point through the detection of a temperature sensor.
This approach clearly has drawbacks. For example, assume that the performance of the radar is measured at an ambient temperature of-30 ℃. According to the above solution, even if the radar is taken out quickly when the radar reaches-30 ℃ in the container, the radar cannot be tested in a short time (for example, half an hour or more), and then, in the normal temperature environment, the radar will be heated rapidly due to heat conduction, and obviously, the test result obtained subsequently is not accurate.
On the other hand, the environmental humidity in different areas is also very different, for example, the south is wet and rainy, the northwest is dry and clear, and the difference is very large in the humidity. If the vehicle is driven in such different areas one after the other, the performance of the radar may be different due to the contrasting performance of the environment.
Thus, there is a need for good performance when the vehicle radar traverses different areas, at different environmental parameters (mainly ambient and temperature and humidity).
Referring to fig. 1 to 3, the present invention provides an embodiment of a temperature and humidity box, including a box body; the box body is a hollow cavity surrounded by an insulating layer; the box body is provided with a temperature control device and a humidity control device which are used for controlling the temperature parameter and the humidity parameter in the box body; one side surface of the box body is a spherical wave-transmitting heat-insulating layer; in a use state, the radar to be detected is arranged at the center of the sphere of the spherical wave-transparent heat-insulating layer.
In specific implementation, the temperature control range of the temperature control device is-45 ℃ to +85 ℃ or wider; the humidity control range of the humidity control device is 10-90%. And controlling according to the actual test.
In the temperature and humidity box of the embodiment, the spherical wave-transparent heat-insulating layer 2 is made of materials with high wave-transparent rate, low dielectric constant and high heat-insulating performance. In some embodiments, the material of the spherical wave-transparent insulating layer 2 may be a rigid foam layer with a dielectric constant lower than 1.1, for example, a dielectric constant of 1.093, which is close to air and has a high wave-transparent rate. It should be noted that rigid foam is only one option for one embodiment of the present invention, and other spherical wave-transparent insulating layers satisfying the requirement of low dielectric constant material are within the protection scope of the present invention. The utility model is not limited in this regard.
Other sides of the temperature and humidity box can be plane heat-insulating layers, and non-metal material surfaces can be selected. The hard foam layer as the spherical wave-transparent heat-insulating layer 2 is fixedly connected with the adjacent non-metal surface as the plane heat-insulating layer by screws or pressing.
That is to say, in the box of humiture case, the material of sphere wave-transparent heat preservation 2 and other plane heat preservation's material requirement are different. Other plane heat-insulating layers need to realize high heat-insulating function, and the material of the spherical wave-transparent heat-insulating layer 2 needs to meet the requirements of high wave-transparent rate, low dielectric constant and high heat-insulating property.
This embodiment humiture case has following advantage:
in the first aspect, the box body 1 is a temperature maintaining structure, and after a radar to be tested (not shown) is placed into the temperature maintaining structure, the temperature in the box body meeting requirements can be provided for the radar to be tested according to test requirements. But more importantly, because the box 1 of humiture case is provided with at least one sphere wave-transparent heat preservation 2, this sphere wave-transparent heat preservation 2 except can realizing the heat preservation function, still has very high wave-transparent rate. Therefore, when the radar performance test is carried out, the radar to be tested does not need to be taken out like the prior art, and the spherical wave-transparent heat-insulating layer 2 has little influence on the sending and receiving of radar signals. Therefore, the performance of the radar can be tested at different environmental temperatures; moreover, compared with the plane wave-transparent heat-insulating layer, the spherical wave-transparent heat-insulating layer 2 avoids the defect of test errors caused by further refraction generated by medium change after radar electromagnetic waves encounter the plane heat-insulating layer, so that the performance test of the radar to be tested is more accurate and reliable.
In the second aspect, since the box body is provided with the humidity control device, the humidity in the box body is adjusted by pumping appropriate water, and the humidity test condition is achieved.
The utility model can adjust the environmental parameters of the radar to be tested arranged in the box body, and accurately meet the test of the performance parameters of the radar to be tested at the given temperature and the given humidity.
Referring again to fig. 1, it can be seen that the humiture box of the present embodiment further includes a control system 3. The control system 3 is arranged outside the box body 1 and is connected with the temperature control device and the humidity control device through electric signals.
Through setting up control system 3, can be convenient control the temperature control device, the humidity control device of box. And moreover, environmental parameters in the temperature and humidity box can be monitored in real time, and the test condition of the radar to be tested is ensured.
Referring to fig. 4, the temperature and humidity box further includes a rotating mechanism; the rotating mechanism comprises a rotary table 4, a swing arm 5 and an upright post 6. The rotary table 4 is arranged below the spherical wave-transparent heat-insulating layer 2; the swing arm 5 is arranged along the horizontal direction and comprises a first connecting end and a second connecting end, and the first connecting end is connected with the rotary table 4 and is used for rotating within a given angle range of the horizontal plane under the driving of the rotary table 4; the upright post 6 is fixedly connected with the second connecting end of the swing arm 5, and the top of the upright post 6 is provided with a radio frequency front end 7. The temperature and humidity box also comprises a wave absorption plate 8; the wave absorbing plates 8 are arranged on the sides and the rear of the upright post 6.
When testing the radar to be tested in the temperature and humidity box, executing the following steps:
(a) before the test is started, a radar to be tested is arranged at the center of the spherical wave-transparent heat-insulating layer 2;
(b) according to the test requirements, the temperature and the humidity in the box body 1 are adjusted through the control system 3;
(c) adjusting the position of the swing arm 5, the height of the upright post 6 above and below and the pitch angle with the radar to be detected as the center of a circle, so that the connection line of the radio frequency front end 7 and the radar to be detected is positioned on the horizontal axis of the radar;
(d) the swing arm 5 rotates in a given area in a horizontal plane, the radio frequency front end 7 starts to work to obtain test data, and finally data analysis such as parameters of a power diagram, a radiation direction diagram, radio frequency signal quality and the like of the vehicle-mounted radar is analyzed and calculated through the control system.
It can be seen that the present embodiment also has the following technical effects:
the swing arm can rotate in a given angle range of a horizontal plane, so that performance parameters of the radar to be measured in a given area range can be measured, and a force diagram for comprehensively representing radar performance indexes can be obtained.
During concrete implementation, the length of the swing arm 5 in the horizontal direction can be adjusted through stretching, so that the product tests with different radiuses can be met, and the interference generated by the fact that the distance between the radio frequency front end and a radar to be tested is too close can be avoided according to actual conditions.
In a preferred embodiment the mast 6 is provided with a telescopic mechanism for adjusting the height of the mast in the vertical direction and the adjustment of the pitch angle around the radar. That is to say, the height of radio frequency front end is adjustable and the relative radar is the pitch angle of centre of a circle also can be adjusted, can adapt to the whole car test of not co-altitude millimeter wave radar.
In the implementation of the present invention, the wave absorbing plate 8 may be further disposed, as shown in fig. 1 to 4, the whole wave absorbing plate is designed in a circular arc shape to reduce the incident angle of the electromagnetic wave and reduce unnecessary interference.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. The utility model provides a humiture case, its characterized in that includes:
a box body;
the box body is a hollow cavity surrounded by an insulating layer;
the box body is provided with a temperature control device and a humidity control device and is used for controlling temperature parameters and humidity parameters in the box body;
one side surface of the box body is a spherical wave-transmitting heat-insulating layer;
in a use state, the radar to be detected is arranged at the center of the sphere of the spherical wave-transparent heat-insulating layer.
2. The temperature and humidity box according to claim 1, further comprising,
a control system;
the box body is arranged outside the box body;
and the temperature control device and the humidity control device are connected through electric signals.
3. The temperature and humidity box according to claim 2,
the spherical wave-transparent heat-insulating layer is made of a hard foam layer with the dielectric constant lower than 1.1.
4. The temperature and humidity box according to claim 3,
the temperature control range of the temperature control device is-45 ℃ to +85 ℃;
the humidity control range of the humidity control device is 10% -90%.
5. The temperature and humidity box according to any one of claims 1 to 4, further comprising,
a rotating mechanism;
the rotating mechanism comprises a rotary table, a swing arm and an upright post;
the rotary table is arranged below the spherical wave-transparent heat-insulating layer;
the swing arm is arranged along the horizontal direction and comprises a first connecting end and a second connecting end, and the first connecting end is connected with the rotary table and is used for rotating within a given angle range of the horizontal plane under the driving of the rotary table;
the upright post is fixedly connected with the second connecting end of the swing arm, and a radio frequency front end is arranged at the top of the upright post.
6. The temperature and humidity box according to claim 5,
the upright post is provided with a telescopic mechanism and used for adjusting the height of the upright post in the vertical direction and the pitch angle with the radar as the circle center.
7. The temperature and humidity box according to claim 6,
the length of the swing arm along the horizontal direction is adjustable.
8. The temperature and humidity box according to claim 7, further comprising,
a wave absorbing plate;
the wave-absorbing plates are arranged on the side and the rear of the upright post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199315.1U CN215986470U (en) | 2021-09-10 | 2021-09-10 | Temperature and humidity box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122199315.1U CN215986470U (en) | 2021-09-10 | 2021-09-10 | Temperature and humidity box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215986470U true CN215986470U (en) | 2022-03-08 |
Family
ID=80465358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122199315.1U Active CN215986470U (en) | 2021-09-10 | 2021-09-10 | Temperature and humidity box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215986470U (en) |
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2021
- 2021-09-10 CN CN202122199315.1U patent/CN215986470U/en active Active
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