CN112649792A - Millimeter wave radar test turntable and test method thereof - Google Patents
Millimeter wave radar test turntable and test method thereof Download PDFInfo
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- CN112649792A CN112649792A CN202011504928.5A CN202011504928A CN112649792A CN 112649792 A CN112649792 A CN 112649792A CN 202011504928 A CN202011504928 A CN 202011504928A CN 112649792 A CN112649792 A CN 112649792A
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The invention relates to a millimeter wave radar test turntable and a test method thereof, wherein the radar test turntable comprises a base, a stepping motor controller and a power supply converter are arranged on the base, a support frame is arranged on the base, a stepping motor is arranged in the support frame, the stepping motor is connected with a conductive sliding ring, the conductive sliding ring is connected with a fixed plate, and a load table is rotatably arranged on the fixed plate. In the invention, the load-carrying platform is controlled to automatically rotate by the stepping motor, and the automatic test of the radar performance can be realized only by inputting the angle range to be tested and the measured angle accuracy on the upper computer interface of the control turntable; the invention does not need to detect in professional fields and large-range open spaces, thereby saving the detection cost.
Description
Technical Field
The invention relates to the field of radar performance testing, in particular to a millimeter wave radar testing turntable and a testing method thereof.
Background
The millimeter wave radar has the capability of positioning the target in all weather, long distance and high resolution, so that the millimeter wave radar is widely used for detecting the distance, the speed and the angular orientation of the surrounding target in the fields of intelligent automobile application and traffic detection, and the performance of the millimeter wave radar can be determined by testing the performance of the millimeter wave radar in three aspects. A rotary table system required by the test radar is controlled by the radar and also ensures the test precision.
However, the existing radar test bench is basically a fixed test bench, angle measurement can be performed only by moving a test target after the radar is installed, and the fixed test bench is basically immovable, which is not favorable for testing the performance of the radar.
Disclosure of Invention
In order to solve the technical problems, the invention provides a millimeter wave radar test turntable and a test method thereof. The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the utility model provides a millimeter wave radar test revolving stage, includes the base, be equipped with step motor controller and power converter on the base, be equipped with the support frame on the base, be equipped with in the support frame with step motor, step motor is connected with the slip ring that leads electricity, the slip ring that leads electricity is connected with the fixed plate, it has the load platform to rotate the installation on the fixed plate.
An absolute value encoder is arranged between the stepping motor and the conductive slip ring.
And a sliding ring guide rail matched with the load-carrying platform is arranged on the fixed plate.
A test method of a millimeter wave radar comprises the following steps: the method comprises the following steps:
the first step is as follows: the rotary table is arranged at a flat position, so that no obstacle exists in the radar detection range;
the second step is that: placing calibration equipment right in front of the rotary table, and fixing the radar to be detected on the load table;
the third step: after the pitch angle of the radar to be measured is adjusted, simultaneously, the power supply of the rotary table is connected with a computer;
the fourth step: inputting the detection range and speed by a computer, and locking the distance range of the target to be detected;
the fifth step: starting a power supply, and identifying an angle at which the radar needs to be driven to reach an appointed starting point by a stepping motor controller according to the angle returned by the absolute value encoder;
and a sixth step: the stepping motor drives the load platform to rotate from a starting angle until reaching an ending angle, and simultaneously, the target information detected at each detection angle is uploaded to the computer;
the seventh step: and calculating all the test data through corresponding radar formulas to obtain the performance of the radar.
The calibration equipment comprises a target reflector and a radar of the same type, wherein the target reflector is arranged for radar power diagram testing, and the radar of the same type is used for radar directional diagram testing.
In the radar power diagram test:
the first step is as follows: arranging a target reflector at a position 6-10 meters in front of the 0-degree angle of the rotary table;
the second step is that: testing target data of a group of radars to be tested at 0 ℃ to calculate the actual farthest detection distance of the radars to be tested;
the third step: and combining each group of target data detected by the radar to be detected with the target data of the radar to be detected at 0 ℃, and driving a radar power map correlation formula to obtain the power map performance of the radar to be detected.
The calibration radar is arranged at a position 6-10 meters in front of a 0-degree angle of the rotary table in the radar directional diagram test, the calibration radar and the radar to be tested are at the same height, the antenna emitting surfaces of the calibration radar and the radar to be tested are opposite, and a signal line connected with a computer is arranged on the calibration radar.
After the calibration radar and the radar to be measured are powered on: the first step is as follows: setting the rotation angle range of the load platform according to the angle range of the radar transmitting antenna;
the second step is that: the calibration radar transmits the currently measured signal to a computer through a signal wire after rotating every time;
the third step: the measured signals can be converted into a radar directional diagram by substituting into a radar directional diagram correlation formula.
The invention has the beneficial effects that: in the invention, the load-carrying platform is controlled to automatically rotate by the stepping motor, and the automatic test of the radar performance can be realized only by inputting the angle range to be tested and the measured angle accuracy on the upper computer interface of the control turntable; the invention does not need to detect in professional fields and large-range open spaces, thereby saving the detection cost.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a first perspective view of a turntable according to the present invention;
FIG. 2 is a schematic perspective view of a turntable according to the present invention;
fig. 3 is a top view of a fixation plate of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described more clearly and more completely with reference to the drawings in the following embodiments, and it is understood that the described embodiments are only a part of the present invention, rather than all of the present invention, and based on the embodiments, other embodiments obtained by those skilled in the art without inventive exercise are within the protection scope of the present invention.
As shown in fig. 1 to 3, a millimeter wave radar test turntable comprises a base 1, wherein a stepping motor controller 2 and a power converter 3 are arranged on the base 1, a support frame 4 is arranged on the base 1, a stepping motor 5 is arranged in the support frame 4, the stepping motor 5 is connected with a conductive slip ring 6, the conductive slip ring 6 is connected with a fixed plate 7, and a load carrying table 8 is rotatably mounted on the fixed plate 7; the radar to be measured is fixed on the load platform 8 through a bolt.
An absolute value encoder 9 is arranged between the stepping motor 5 and the conductive slip ring 6; the absolute value encoder 9 can report the current angle of the rotating shaft of the stepping motor 5 in real time so as to realize the random rotation of the radar angle, and meanwhile, the load platform 8 can carry out a self-calibration function.
A sliding ring guide rail 10 matched with the load table 8 is arranged on the fixed plate 7, and an industrial personal computer 11 is also arranged in the support frame 4; the industrial personal computer 11 can realize the rotation of the stepping motor 5 which is more convenient and faster to control.
A millimeter wave radar test method comprises the following steps: the method comprises the following steps:
the first step is as follows: the rotary table is arranged at a flat position, so that no obstacle exists in the radar detection range;
the second step is that: a calibration device is placed right in front of the rotary table, and the radar to be measured is fixed on the load table 8;
the third step: after the pitch angle of the radar to be measured is adjusted, simultaneously, the power supply of the rotary table is connected with a computer; the computer can display the radar detection target and output radar power diagram and radar directional diagram functions, and can control the stepping motor 5 and the radar detection range;
the fourth step: inputting the detection range and speed by a computer, and locking the distance range of the target to be detected;
the fifth step: starting a power supply, and identifying the angle of the radar to be driven to reach a specified starting point by the stepping motor controller 2 according to the angle returned by the absolute value encoder;
and a sixth step: the stepping motor 5 drives the load table 8 to rotate from the initial angle until the end angle is reached, and simultaneously, the target information detected at each detection angle is uploaded to a computer;
the seventh step: and calculating all the test data through corresponding radar formulas to obtain the performance of the radar.
The calibration equipment comprises a target reflector and a radar of the same type, wherein the target reflector is arranged for radar power diagram testing, and the radar of the same type is used for radar directional diagram testing.
In the radar power diagram test:
the first step is as follows: arranging a target reflector at a position 6-10 meters in front of the 0-degree angle of the rotary table;
the second step is that: testing target data of a group of radars to be tested at 0 ℃ to calculate the actual farthest detection distance of the radars to be tested;
the third step: and combining each group of target data detected by the radar to be detected with the target data of the radar to be detected at 0 ℃, and driving a radar power map correlation formula to obtain the power map performance of the radar to be detected, wherein the power map performance can be tested for many times to verify the repeatability.
In the radar directional diagram test, a calibration radar is arranged at a position 6-10 meters in front of a 0-degree angle of a rotary table, the calibration radar and a radar to be tested are at the same height and ensure that antenna emitting surfaces of the calibration radar and the radar to be tested are opposite, and a signal line connected with a computer is arranged on the calibration radar; the signal line is connected with an industrial personal computer 11, and the industrial personal computer 11 is connected with a computer through a network cable or wireless transmission equipment; ensuring that the same height of the calibration radar and the radar to be measured is opposite to the antenna emission surface so as to eliminate the interference of the radar in the pitching direction;
after the calibration radar and the radar to be measured are powered on: the first step is as follows: setting the rotation angle range of the load platform 8 according to the angle range of the radar transmitting antenna;
the second step is that: the calibration radar transmits the currently measured signal to a computer through a signal wire after rotating every time;
the third step: the measured signals can be converted into a radar directional diagram by substituting into a radar directional diagram correlation formula.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a millimeter wave radar test revolving stage, includes base (1), be equipped with step motor controller (2) and power converter (3) on base (1), be equipped with support frame (4) on base (1), its characterized in that: the device is characterized in that a stepping motor (5) is arranged in the support frame (4), the stepping motor (5) is connected with a conductive sliding ring (6), the conductive sliding ring (6) is connected with a fixed plate (7), and a load carrying table (8) is rotatably mounted on the fixed plate (7).
2. A millimeter wave radar testing turntable according to claim 1, wherein: an absolute value encoder (9) is arranged between the stepping motor (5) and the conductive slip ring (6).
3. A millimeter wave radar testing turntable according to claim 1, wherein: and a sliding ring guide rail (10) matched with the load table (8) is arranged on the fixed plate (7).
4. A test method using a millimeter wave radar test turret according to any one of claims 1 to 3: the method is characterized in that: the method comprises the following steps:
the first step is as follows: the rotary table is arranged at a flat position, so that no obstacle exists in the radar detection range;
the second step is that: a calibration device is placed right in front of the rotary table, and the radar to be measured is fixed on the load table (8);
the third step: after the pitch angle of the radar to be measured is adjusted, simultaneously, the power supply of the rotary table is connected with a computer;
the fourth step: inputting the detection range and speed by a computer, and locking the distance range of the target to be detected;
the fifth step: starting a power supply, and identifying the angle of the radar to reach an appointed starting point by the stepping motor controller (2) according to the angle returned by the absolute value encoder;
and a sixth step: the stepping motor (5) drives the load table (8) to rotate from the initial angle until the end angle is reached, and simultaneously, the target information detected at each detection angle is uploaded to the computer;
the seventh step: and calculating all the test data through corresponding radar formulas to obtain the performance of the radar.
5. The test method of claim 4, wherein: the calibration equipment comprises a target reflector and a radar of the same type, wherein the target reflector is arranged for radar power diagram testing, and the radar of the same type is used for radar directional diagram testing.
6. The test method of claim 5, wherein: in the radar power diagram test:
the first step is as follows: arranging a target reflector at a position 6-10 meters in front of the 0-degree angle of the rotary table;
the second step is that: testing target data of a group of radars to be tested at 0 ℃ to calculate the actual farthest detection distance of the radars to be tested;
the third step: and combining each group of target data detected by the radar to be detected with the target data of the radar to be detected at 0 ℃, and driving a radar power map correlation formula to obtain the power map performance of the radar to be detected.
7. The test method of claim 5, wherein: the calibration radar is arranged at a position 6-10 meters in front of a 0-degree angle of the rotary table in the radar directional diagram test, the calibration radar and the radar to be tested are at the same height, the antenna emitting surfaces of the calibration radar and the radar to be tested are opposite, and a signal line connected with a computer is arranged on the calibration radar.
8. The test method of claim 7, wherein: after the calibration radar and the radar to be measured are powered on: the first step is as follows: setting the rotation angle range of the load platform (8) according to the angle range of the radar transmitting antenna;
the second step is that: the calibration radar transmits the currently measured signal to a computer through a signal wire after rotating every time;
the third step: the measured signals can be converted into a radar directional diagram by substituting into a radar directional diagram correlation formula.
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| CN202011504928.5A CN112649792A (en) | 2020-12-18 | 2020-12-18 | Millimeter wave radar test turntable and test method thereof |
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| CN114578300A (en) * | 2022-02-09 | 2022-06-03 | 珠海云洲智能科技股份有限公司 | Test device, measurement method and electronic equipment |
| CN114755643A (en) * | 2022-04-15 | 2022-07-15 | 威海北洋电气集团股份有限公司 | Radar module and automatic detection method and system for finished product of radar module |
| WO2023202277A1 (en) * | 2022-04-18 | 2023-10-26 | 中兴通讯股份有限公司 | Method for implementing pattern test, and electronic device and computer-readable medium |
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