CN214750822U - Automatic measuring system for levelness of weather radar - Google Patents
Automatic measuring system for levelness of weather radar Download PDFInfo
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- CN214750822U CN214750822U CN202023053154.7U CN202023053154U CN214750822U CN 214750822 U CN214750822 U CN 214750822U CN 202023053154 U CN202023053154 U CN 202023053154U CN 214750822 U CN214750822 U CN 214750822U
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Abstract
The utility model discloses a weather radar levelness automatic measuring system, include: the system comprises a duty device, an antenna pedestal levelness measuring device, a feed source levelness measuring device and a wireless communication module; the duty device is used for sending a wake-up signal at a set time; the antenna pedestal levelness measuring device is used for measuring the levelness of the antenna pedestal in different directions when the pitch angle is 0 degrees according to the awakening signal; the feed source levelness measuring device is used for starting to receive the radar side lobe radiation signal according to the wake-up signal and calculating the feed source levelness according to the radar side lobe radiation signal; the wireless communication module is used for sending the levelness of the antenna pedestal and the levelness of the feed source in different directions to an upper computer for displaying. The utility model discloses a set up antenna pedestal levelness when antenna pedestal levelness measuring device and feed levelness measuring device realize automatic measure feed levelness and different position, overcome the problem that traditional measurement cost time is long, the process is loaded down with trivial details and intensity of labour is big.
Description
Technical Field
The utility model relates to a levelness measures technical field, especially relates to a weather radar levelness automatic measuring system.
Background
The high-precision measurement of weather radar on weather targets is based on radar calibration, and antenna pedestal levelness measurement is one of weather radar calibration items. The measurement of the levelness of a weather radar base is a difficult work for a long time, the aperture size of an antenna reaches 4.3m, the height of an antenna feed source reaches dozens of meters, calibration measurement requires levelness measurement at eight positions of 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, 270 degrees, 315 degrees and 360 degrees of the antenna base, each measurement is carried out, the pitch angle is 0 degree, the rotation of the antenna is stopped at 45 degrees, the antenna manually climbs to a platform of dozens of meters to place a coincidence level meter, the measurement is started after the coincidence level meter is stabilized, manual reading and conversion are carried out, the platform is descended after the completion, a ladder is removed, the radar is started, the measurement is carried out again at 45 degrees, the process is circulated until 360 degrees, the ladder is frequently lifted, the platform is climbed is used for measurement, the measurement time is long, the process is complicated, and the labor intensity is high.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a weather radar levelness automatic measure system to antenna pedestal levelness when realizing automatic measure feed levelness and different position.
In order to achieve the above object, the utility model provides a weather radar levelness automatic measuring system, the system includes:
the duty device is used for sending a wake-up signal at set time;
the antenna pedestal levelness measuring device is arranged on the rotating mechanism, is connected with the duty device and is used for starting to measure the levelness of the antenna pedestal in different directions when the pitch angle is 0 degrees according to the awakening signal;
the feed source levelness measuring device is connected with the duty device and used for starting to receive radar side lobe radiation signals according to the awakening signals, determining the amplitude of a horizontal polarization component and the amplitude of a vertical polarization component according to the radar side lobe radiation signals, calculating an amplitude ratio and calculating the feed source levelness according to the amplitude ratio;
and the wireless communication module is respectively connected with the antenna pedestal levelness measuring device, the feed source levelness measuring device and the upper computer and is used for sending the antenna pedestal levelness and the feed source levelness in different directions to the upper computer for displaying.
Optionally, the feed source levelness measuring device is a dual-polarization microstrip antenna.
Optionally, the antenna mount levelness measuring device is a MEMS levelness sensor.
Optionally, the rotation mechanism comprises:
the weather radar azimuth turntable is used for driving the weather radar to rotate in azimuth;
the antenna pedestal is parallel to the normal line of the antenna, is arranged on the weather radar azimuth turntable and is used for controlling the weather radar to rotate and scan in the pitching direction;
and the antenna pedestal levelness measuring device is arranged at the central position of the weather radar pitching rotary table.
Optionally, the system further comprises:
the casing, the both sides board of casing is organic glass, and one curb plate does feed levelness measuring device radiation window, and another curb plate does wireless communication module's antenna window, the casing is used for placing antenna pedestal levelness measuring device feed levelness measuring device with wireless communication module.
Optionally, the duty device is a clock calendar chip or a clock calendar chip integrated with an ARM single chip microcomputer.
Optionally, the system further includes a battery connected to the clock and calendar chip for supplying electric energy to the clock and calendar chip.
Optionally, the system further includes a regulated power supply, which is respectively connected to the clock calendar chip, the battery, the antenna pedestal levelness measuring device, and the feed source levelness measuring device, and configured to start working according to the wake-up signal, regulate the voltage output by the battery, and provide a regulated voltage for the antenna pedestal levelness measuring device and the feed source levelness measuring device.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model discloses a set up antenna pedestal levelness when antenna pedestal levelness measuring device and feed levelness measuring device realize automatic measure feed levelness and different position, send to the host computer through wireless transmission module and show, realize the long-term automatic non-contact measurement of weather radar levelness, long-range networking reading, unmanned on duty work overcomes the problem that traditional measurement cost is long, the process is loaded down with trivial details and intensity of labour is big.
Additionally, the utility model discloses a set up the device on duty, send wake-up signal at the settlement time, and then detect the antenna pedestal levelness when feed source levelness and different position according to wake-up signal, other times except that the settlement time are for sleep state, realize the low-power consumption design.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a structure of an automatic measuring system for levelness of a weather radar according to an embodiment of the present invention;
fig. 2 is an installation schematic view of the levelness measuring device of the antenna pedestal according to the embodiment of the present invention;
fig. 3 is a structural diagram of the levelness measuring device of the antenna pedestal according to the embodiment of the present invention;
FIG. 4 is a structural diagram of feed source levelness measurement according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of the dual polarization weather radar feed source levelness measurement of the embodiment of the present invention;
fig. 6 is a schematic view of an outer shell according to an embodiment of the present invention;
FIG. 7 is a layout diagram of the internal structure of the automatic measuring system for the levelness of the weather radar in the embodiment of the present invention;
the system comprises a duty device 1, an antenna pedestal levelness measuring device 2, a feed source levelness measuring device 3, a wireless communication module 4, a battery 5, a stabilized voltage power supply 6 and a duty device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a weather radar levelness automatic measuring system to antenna pedestal levelness when realizing automatic measure feed levelness and different position.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the utility model discloses a weather radar levelness automatic measuring system, the system includes: the system comprises a duty device 1, an antenna pedestal levelness measuring device 2, a feed source levelness measuring device 3 and a wireless communication module 4; antenna pedestal levelness measuring device 2 sets up on rotary mechanism, antenna pedestal levelness measuring device 2 with device on duty 1 is connected, feed source levelness measuring device 3 with device on duty 1 is connected, wireless communication module 4 respectively with antenna pedestal levelness measuring device 2 feed source levelness measuring device 3 and host computer are connected.
The duty device 1 is used for sending a wake-up signal at a set time; the antenna pedestal levelness measuring device 2 is used for measuring the levelness of the antenna pedestal in different directions when the pitch angle is 0 degree according to the awakening signal; the feed source levelness measuring device 3 is used for starting to receive radar side lobe radiation signals according to the wake-up signals, determining the amplitude of a horizontal polarization component and the amplitude of a vertical polarization component according to the radar side lobe radiation signals, calculating an amplitude ratio and calculating the feed source levelness according to the amplitude ratio; and the wireless communication module 4 is used for sending the levelness of the antenna pedestal and the levelness of the feed source in different directions to an upper computer for displaying.
The utility model discloses device on duty 1 is used for sending the wake-up signal at the automatic start-up of settlement time to make follow-up utilize antenna pedestal levelness measuring device 2 to measure weather radar pitch angle according to the wake-up signal and put 0, the azimuth is at antenna pedestal levelness when 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, 315 °, 360 °, the time of rotation a week is 60 s; the utility model discloses the module on duty is at the automatic start of settlement time, and all the other times dormancy standby realizes overlength standby. The utility model provides a device on duty 1 both can only include clock calendar chip, can also include the clock calendar chip of integrated ARM singlechip.
The antenna pedestal levelness measuring device 2 of the utility model is arranged on the rotating mechanism, and the antenna pedestal levelness measuring device 2 is used for measuring the antenna pedestal levelness in different directions when the pitch angle is 0 degrees according to the awakening signal, namely the levelness of the weather radar; the antenna pedestal levelness calibration test is one of weather radar calibration test items for measuring whether the levelness of a weather radar meets the index requirement when the weather radar is in a horizontal state at a pitch angle of 0 degrees.
The utility model provides a wireless communication module 4 adopt conventional data communication device can, not the utility model discloses a protection point.
The upper computer is connected with the wireless communication module 4 and is used for judging whether the levelness of the antenna pedestal exceeds a set range; if the azimuth angle and the pitch angle of the weather radar are beyond the set range, alarming by flashing and displaying the azimuth angle and the pitch angle of the weather radar so that a worker can adjust the levelness of the antenna pedestal according to the azimuth angle and the pitch angle; if the setting range is not exceeded, no processing is required. The upper computer is also used for judging whether the difference value between the levelness of the feed source and the levelness of the antenna pedestal is greater than a set value; if the difference value is larger than the set value, the alarm is given through flashing, so that the guide staff can finely adjust the feed source, and the levelness of the feed source and the antenna pedestal is consistent.
Rotary mechanism includes: a weather radar azimuth turntable and an antenna pedestal; the antenna pedestal is parallel to the normal line of the antenna and arranged on the weather radar azimuth turntable; the antenna pedestal levelness measuring device 2 is arranged at the center position of the antenna pedestal. The weather radar azimuth rotary table is used for driving the weather radar to rotate in azimuth. The antenna pedestal is used for controlling the weather radar to rotate and scan in the pitching direction. The antenna pedestal levelness measuring device 2 is arranged at the center of the antenna pedestal, and the levelness of the weather radar is determined by measuring the levelness of the antenna pedestal at a pitch angle of 0 degree.
Specifically, as shown in fig. 2, the right side is a local section of a paraboloid reflector of the weather radar, the section is in a parabola shape, the middle circular plate is a weather radar azimuth turntable, the weather radar azimuth is controlled to rotate, the middle large square is a weather radar pitching turntable, namely an antenna pedestal, the weather radar is controlled to rotate and scan in the pitching direction, the small center square is an antenna pedestal levelness measuring device 2 and is installed in the center of a square platform at the top of the pitching turntable, the weather radar levelness is determined by measuring the levelness of the rotating mechanism when the pitching angle is 0 degrees, the reflector is a weather radar main body, and an antenna beam is formed by reflecting a feed source radiation signal located at the focus position of the paraboloid reflector to radiate electromagnetic waves to the space.
The levelness measuring device of the type depends on the change measurement of bubbles or blisters, and data needs to be manually read after the radar stops and is stabilized, so that the levelness measuring device has the characteristic of inconvenient use, therefore, the utility model selects a high-precision MEMS levelness sensor as an antenna pedestal levelness measuring device 2, the MEMS is called a Micro-electro mechanical system (Micro-electro mechanical system), as shown in figure 3, the high-precision MEMS levelness sensor adopts the MEMS technology and digital output to realize levelness measurement, the inside of the sensor adopts high-resolution differential digital-to-analog conversion, the built-in automatic compensation and filtering algorithm is adopted, the error caused by environmental change is reduced to the maximum extent, the inclination angle of the antenna pedestal relative to X, Y axes is accurately measured, the measuring precision is 0.001 degrees, and the high-precision MEMS levelness sensor is a mature product, the high-precision MEMS levelness sensor is arranged in the shell and keeps parallel to the plane of the base of the measuring device through processing and fine adjustment.
The utility model discloses feed levelness measuring device 3 selects to conventional dual polarization microstrip antenna, as shown in FIG. 4, dual polarization microstrip antenna perpendicular to horizontal plane installation, dual polarization microstrip antenna's horizontal polarization direction is parallel with feed oral surface horizontal polarization direction, dual polarization microstrip antenna's vertical polarization direction is parallel with radar antenna vertical polarization direction, design radar vertical polarization radiation signal measurement and circuits such as horizontal polarization radiation signal measurement polarize the component test. By utilizing the principle that the polarization direction of a radar antenna feed side lobe radiation signal is unchanged, the ratio of the amplitude of a vertical polarization component to the amplitude of a horizontal polarization component is determined by receiving the radar side lobe radiation signal to obtain an amplitude ratio, and then the feed source levelness is calculated according to the amplitude ratio.
The utility model discloses a dual polarization microstrip antenna measures radar radiation signal vertical polarization signal amplitude and horizontal polarization signal amplitude, and the calculation range is compared, calculates radar antenna feed through the range ratio, is for levelness measuring device's offset angle promptly for measure dual polarization weather radar antenna feed levelness.
The antenna feed source levelness of the current weather radar antenna depends on the levelness of an antenna pedestal to be guaranteed, the antenna feed source levelness and the antenna pedestal levelness are calibrated when leaving a factory, the feed source levelness can be guaranteed by measuring the levelness of the antenna pedestal, the deformation factor of the radar in long-term operation is considered, and when the feed source levelness is out of tolerance, the measurement accuracy of parameters such as differential reflectivity factors of the dual-polarization radar can be influenced.
FIG. 5 is a schematic diagram of the measurement of the offset angle when the dual polarization weather radar feed levelness is deviated, in which, the diagram (a) shows that the antenna feed source transmits a vertical polarization wave Ha, the antenna pedestal levelness measuring device 2 receives the vertical polarization wave Ha, if the polarization direction of the antenna pedestal levelness measuring device 2 is parallel to the polarization direction of the feed source, the vertical polarization component is Ha, the horizontal polarization component is "0", if the relative offset is caused, if the feed source levelness is right-hand or left-hand relative to the antenna pedestal levelness, the antenna pedestal levelness measuring device 2 outputs V through the horizontal polarization channelbOutput H of vertically polarized channelbThe offset angle is:
the horizontal polarized wave Va is transmitted by the antenna feed source, the antenna pedestal levelness measuring device 2 receives the horizontal polarized wave Va, if the polarization direction of the antenna pedestal levelness measuring device 2 is parallel to the polarization direction of the feed source, the horizontal polarized component is Va, the vertical polarized component is '0', and if the feed source levelness is deviated to the right or left, the horizontal polarized channel output V of the antenna pedestal levelness measuring device 2 is outputbOutput H of vertically polarized channelbThe offset angle is:
the method for measuring the offset angle for the vertical polarization single polarization radar is shown in the graph (a), the method for measuring the offset angle for the horizontal polarization single polarization radar is shown in the graph (b), signals are received through the vertical polarization channel and the horizontal polarization channel of the radar for the vertical polarization and the horizontal polarization double-transmission double-receiving radar, and the calculation method is the same as the above.
The system still includes battery 5 and constant voltage power supply 6, battery 5 with clock calendar chip connects, constant voltage power supply 6 respectively with clock calendar chip battery 5 antenna pedestal levelness measuring device 2 with feed source levelness measuring device 3 is connected, battery 5 is used for clock calendar chip with constant voltage power supply 6 provides the electric energy. And the stabilized voltage power supply 6 is used for starting to work according to the wake-up signal, stabilizing the voltage output by the battery 5 and providing stabilized voltage for the antenna pedestal levelness measuring device 2 and the feed source levelness measuring device 3.
As shown in fig. 6-7, two side plates of the housing are made of organic glass, one side plate is a radiation window of the feed source levelness measuring device 3, and the other side plate is an antenna window of the wireless communication module 4, and the housing is used for placing the antenna pedestal levelness measuring device 2, the feed source levelness measuring device 3 and the wireless communication module 4; specifically, feed levelness measuring device 3 is located the right side, right side board antenna window is the organic glass board, transmit the electromagnetic wave, wireless communication module 4 is located the left side, left side board antenna window is the organic glass board, see through the antenna, feed levelness measuring device 3 and wireless communication module 4 pass through the fix with screw on the curb plate, feed levelness measuring device 3 antenna is perpendicular with the bottom plate, antenna horizontal polarization direction is parallel with radar feed horizontal plane, antenna vertical polarization direction is perpendicular with radar feed horizontal plane. Guide grooves are formed in the middle of the feed source levelness measuring device 3 and the wireless communication module 4, the duty device 1, the stabilized voltage power supply 6 and the battery 5 can be inserted, a mother board is arranged behind the three devices, connection among the three devices is achieved, and the antenna pedestal levelness measuring device 2 is installed on the bottom board.
The utility model discloses a technical scheme has following advantage:
1. weather radar levelness automatic measure all is a difficult problem for a long time, and at present through artifical mode, utilizes to close like the spirit level appearance test, and the testing process is complicated, and the test degree of difficulty is big, is that radar station calibration consumes one of the biggest project of physical power in the work, the utility model discloses an adopt MEMS levelness measuring module, dual polarization feed source levelness measuring module, ARM control module and the wireless communication module that on duty etc. realize the long-term automatic non-contact measurement of weather radar levelness.
2. The purpose that weather radar antenna pedestal levelness was measured is that guarantee antenna feed levelness, does not have antenna feed levelness measuring device at present, the utility model discloses an antenna feed levelness measuring module dual polarized antenna receives radar feed radiation signal, through measuring vertical polarization and horizontal polarization amplitude ratio, calculates antenna feed levelness, reaches automatic measure antenna feed levelness purpose, and the feed levelness that causes is blank always at long-term operation in-process feed deformation.
3. The utility model provides a clock calendar chip dormancy awakens up the design, combines the large capacity battery to through antenna pedestal levelness measuring device, feed levelness measuring device and wireless communication module's low-power consumption design, and high efficiency power design, synthesize the low system consumption, realize long-term automatic non-contact measurement.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. An automatic weather radar levelness measuring system, characterized in that the system comprises:
the duty device is used for sending a wake-up signal at set time;
the antenna pedestal levelness measuring device is arranged on the rotating mechanism, is connected with the duty device and is used for starting to measure the levelness of the antenna pedestal in different directions when the pitch angle is 0 degrees according to the awakening signal;
the feed source levelness measuring device is connected with the duty device and used for receiving radar side lobe radiation signals according to the awakening signals and determining the feed source levelness according to the radar side lobe radiation signals;
and the wireless communication module is respectively connected with the antenna pedestal levelness measuring device, the feed source levelness measuring device and the upper computer and is used for sending the antenna pedestal levelness and the feed source levelness in different directions to the upper computer for displaying.
2. The weather radar levelness automatic measurement system of claim 1, wherein the feed levelness measurement device is a dual-polarization microstrip antenna.
3. The weather radar levelness automatic measuring system of claim 1, wherein the antenna mount levelness measuring device is a MEMS levelness sensor.
4. The weather radar levelness automatic measurement system of claim 1, wherein the rotation mechanism comprises:
the weather radar azimuth turntable is used for driving the weather radar to rotate in azimuth;
the antenna pedestal is parallel to the normal line of the antenna, is arranged on the weather radar azimuth turntable and is used for controlling the weather radar to rotate and scan in the pitching direction;
and the antenna pedestal levelness measuring device is arranged at the central position of the weather radar pitching rotary table.
5. The weather radar levelness automatic measurement system of claim 1, wherein the system further comprises:
the casing, the both sides board of casing is organic glass, and one curb plate does feed levelness measuring device radiation window, and another curb plate does wireless communication module's antenna window, the casing is used for placing antenna pedestal levelness measuring device feed levelness measuring device with wireless communication module.
6. The weather radar levelness automatic measuring system of claim 1, wherein the duty device is a clock calendar chip or a clock calendar chip integrated with an ARM single chip microcomputer.
7. The automatic weather radar levelness measurement system of claim 6, wherein the system further comprises a battery coupled to the clock calendar chip for providing power to the clock calendar chip.
8. The weather radar levelness automatic measuring system of claim 7, wherein the system further comprises a regulated power supply, connected to the clock calendar chip, the battery, the antenna mount levelness measuring device, and the feed source levelness measuring device, respectively, for starting to operate according to the wakeup signal, regulating the voltage output by the battery, and providing a regulated voltage to the antenna mount levelness measuring device and the feed source levelness measuring device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023053154.7U CN214750822U (en) | 2020-12-17 | 2020-12-17 | Automatic measuring system for levelness of weather radar |
| US17/637,080 US20230324510A1 (en) | 2020-12-07 | 2021-12-16 | Weather radar levelness automatic measuring system |
| PCT/CN2021/138844 WO2022127870A1 (en) | 2020-12-17 | 2021-12-16 | System for automatically measuring levelness of weather radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023053154.7U CN214750822U (en) | 2020-12-17 | 2020-12-17 | Automatic measuring system for levelness of weather radar |
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| CN214750822U true CN214750822U (en) | 2021-11-16 |
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| CN202023053154.7U Active CN214750822U (en) | 2020-12-07 | 2020-12-17 | Automatic measuring system for levelness of weather radar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127870A1 (en) * | 2020-12-17 | 2022-06-23 | 中国气象局气象探测中心 | System for automatically measuring levelness of weather radar |
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- 2020-12-17 CN CN202023053154.7U patent/CN214750822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127870A1 (en) * | 2020-12-17 | 2022-06-23 | 中国气象局气象探测中心 | System for automatically measuring levelness of weather radar |
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