CN113296069A - Radar calibration device - Google Patents
Radar calibration device Download PDFInfo
- Publication number
- CN113296069A CN113296069A CN202110686017.7A CN202110686017A CN113296069A CN 113296069 A CN113296069 A CN 113296069A CN 202110686017 A CN202110686017 A CN 202110686017A CN 113296069 A CN113296069 A CN 113296069A
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- radar
- workbench
- conveyor belt
- control signal
- calibration device
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- 238000012360 testing method Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000002592 echocardiography Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 description 6
- 238000012795 verification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
- G01P21/025—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers for measuring speed of fluids; for measuring speed of bodies relative to fluids
Abstract
The invention discloses a radar calibration device. The device includes: the device comprises a lifting rod, a base, a sliding block component, a horizontal support, a workbench, a target radar, a conveyor belt, a servo motor and a pulley; the lifting rod is vertically fixed on the base, the sliding block component is arranged on the lifting rod through a central round hole, and the sliding block component is fixedly connected with the horizontal bracket and is electrically connected with the workbench; the slide block component vertically moves on the lifting rod; the target radar is arranged at one end of the horizontal support, which is far away from the sliding block part, and sends radar waves to the conveyor belt and receives echoes according to the test control signal to obtain test data; the servo motor is connected with the pulley through a conveyor belt; the servo motor rotates according to the rotation control signal and drives the conveying belt; the workbench sends the lifting control signal, the rotation control signal and the test control signal, receives test data of the target radar and calibrates the target radar. The radar water level flow velocity flowmeter is subjected to multi-dimensional detection and calibration, and the stability and reliability are improved.
Description
Technical Field
The embodiment of the invention relates to the electronic product calibration technology, in particular to a radar calibration device.
Background
In hydrological monitoring, flow monitoring and water level monitoring core content, traditional monitoring needs survey crew to launch to accomplish, and is consuming time long, and is inefficient. Along with the progress of water conservancy information technology, the radar water level flow velocity flowmeter is popularized and applied domestically.
Before calibrating the radar water level flow velocity flowmeter, the radar water level flow velocity flowmeter usually needs to be tested and measured in a river or a built water tank, the height is measured through a ruler, certain errors exist, the height and the water flow velocity cannot be adjusted in real time in a simulated measurement environment, and therefore no standard data can be provided for testing verification, calibration and calibration, and multi-dimensional testing verification calibration and calibration cannot be conducted on the radar water level flow velocity flowmeter in different environments.
Disclosure of Invention
The invention provides a radar calibration device, which is used for realizing multi-dimensional detection and calibration of a radar water level flow velocity flowmeter and improving the effects of stability and reliability.
In a first aspect, an embodiment of the present invention provides a radar calibration apparatus, including: a lifting rod, a base, a slide block component, a horizontal bracket, a workbench, a target radar, a conveyor belt, a servo motor and a pulley,
the lifting rod is vertically fixed on the base, the sliding block component is installed on the lifting rod through a central round hole, and the sliding block component is fixedly connected with the horizontal support and is electrically connected with the workbench; the slide block component is used for vertically moving on the lifting rod according to a lifting control signal of the workbench;
the target radar is arranged at one end, far away from the sliding block component, of the horizontal support and is used for vertically moving along with the horizontal support; the target radar is electrically connected with the workbench and used for respectively sending radar waves to the conveyor belt in the vertical direction and in the preset angle direction according to the test control signal of the workbench, respectively receiving echoes and calculating to obtain test data;
the servo motor and the pulley are arranged at a preset distance and connected through the conveyor belt; the servo motor is electrically connected with the workbench and is used for rotating according to a rotation control signal of the workbench and driving the conveyor belt to move;
the workbench is used for sending a lifting control signal, a rotation control signal and a test control signal, and calibrating the target radar after comparing the received test data with standard data.
Optionally, the target radar includes a water level module and a flow rate module;
the water level module is used for vertically sending first radar waves to the conveyor belt and receiving echoes to obtain water level data through calculation, and the flow velocity module is used for sending second radar waves to the conveyor belt according to a preset angle, receiving echoes and obtaining flow velocity data through calculation.
Optionally, the surface of the lifting rod is provided with scale marks.
Optionally, the slider component is composed of an electronic vernier and a stepping motor;
the stepping motor is electrically connected with the workbench through a signal wire and used for receiving a lifting control signal of the workbench and driving the sliding block component to vertically move on the lifting rod;
the electronic vernier has a display screen for displaying height information of the slider member from the conveyor belt at present.
Optionally, the lifting rod is provided with a tooth groove, a gear is arranged in the stepping motor, and the tooth groove is used for matching with the rotation of the gear of the stepping motor.
Optionally, the bottom level of the target radar and the measuring surface of the electronic vernier scale are kept horizontal.
Optionally, a bearing is arranged inside the pulley and used for tensioning the conveyor belt.
Optionally, a control panel is arranged inside the workbench, a control panel is arranged outside the workbench, the control panel is used for sending control signals according to external operation to control the servo motor and the slider component and receiving test data, and the control panel is used for receiving the external operation and displaying control parameters and the test data.
Optionally, the system further comprises a computer, wherein the computer is connected with the control board through a signal line and used for reading the control parameters, and the computer is also used for simulating an environment in which the target radar measures the real-time change of the water level and the flow rate by controlling the servo motor and the sliding block component through the control board.
Optionally, the surface of the conveyor belt is made of a material with the same effect as that of radar waves reflected by the water surface.
The rotating speed of the servo motor and the height of the sliding block component are adjusted through the workbench, the environment that the radar water level flow velocity flowmeter measures the real-time change of the water level flow velocity is simulated, the target radar respectively sends radar waves to the conveyor belt in the vertical direction and the preset angle direction according to the test control signal of the workbench and respectively receives echoes, test data are obtained through calculation, and the target radar is calibrated after the test data are compared with standard data. The problem of can't carry out the test verification calibration and the demarcation of multidimension degree to radar water level velocity of flow flowmeter under different environment is solved, realize carrying out multidimension degree's detection and demarcation to radar water level velocity of flow flowmeter, improve the effect of stability and reliability.
Drawings
Fig. 1 is a schematic structural diagram of a radar calibration apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radar calibration apparatus according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a radar calibration device according to an embodiment of the present invention, where the embodiment is applicable to a case of testing and correcting a radar water level flow rate meter having a water level and flow rate monitoring function, and the method may be executed by the radar calibration device, and specifically includes the following steps:
a radar calibration apparatus, comprising: a lifting rod 10, a base 20, a slider component 30, a horizontal bracket 40, a workbench 50, a target radar 60, a conveyor belt 70, a servo motor 80 and a pulley 90,
the lifting rod 10 is vertically fixed on the base 20, the slider component 30 is installed on the lifting rod 10 through a central circular hole, and the slider component 30 is fixedly connected with the horizontal bracket 40 and is electrically connected with the workbench 50; the slider member 30 is used for vertically moving on the lifting rod 10 according to a lifting control signal of the working table 50;
the target radar 60 is mounted at one end of the horizontal bracket 40 far away from the slider component 30 and is used for vertically moving along with the horizontal bracket 40; the target radar 60 is electrically connected with the workbench 50, and is configured to respectively send radar waves to the conveyor belt 70 in a vertical direction and in a preset angle direction according to a test control signal of the workbench 50 and respectively receive echoes, and obtain test data through calculation;
the servo motor 80 is arranged at a preset distance from the pulley 90 and connected with the conveyor belt 70; the servo motor 80 is electrically connected with the worktable 50 and is used for rotating according to a rotation control signal of the worktable 50 and driving the conveyor belt 70 to move;
the worktable 50 is configured to send a lifting control signal, a rotation control signal, and a test control signal, compare the received test data with standard data, and calibrate the target radar 60.
Optionally, a control board (not shown) is disposed inside the working table 50, a control panel 51 is disposed outside the working table, the control board is configured to send a control signal according to an external operation to control the servo motor 80 and the slider component 30 and receive test data, and the control panel 51 is configured to receive the external operation and display control parameters and the test data.
Optionally, the target radar 60 includes a water level module and a flow rate module,
the water level module is configured to vertically send a first radar wave to the conveyor belt 70 and receive an echo, and calculate to obtain water level data, and the flow rate module is configured to send a second radar wave to the conveyor belt 70 according to a preset angle and receive an echo, and calculate to obtain flow rate data.
The target radar in this embodiment is a radar water level flow rate meter, and before the target radar 60 needs to be tested and calibrated, the target radar 60 is connected with the slider component 30 through the horizontal bracket 40, specifically, the target radar 60 is fixedly installed at one end of the horizontal bracket 40, and the other end of the horizontal bracket 40 is fixedly connected with the slider component 30. The slider member 30 has a circular hole formed through the center thereof, and the slider member 30 is mounted on the lift lever 10 through the circular hole, and the lift lever 10 is vertically fixed to the base 20. A servo motor 80 and a pulley 90 are provided on the base at a predetermined distance and connected by a conveyor belt 70.
The staff carries out test parameter setting and test signal transmission through workstation 50's control panel 51, and control panel control radar calibration device tests target radar 60, and receive radar test data and standard data and compare the back and calibrate target radar 60. Specifically, parameter setting and test signal sending are performed through a control panel of the workbench 50, the control panel sends a lifting control signal to the slider part 30, sends a water level test control signal to the target radar 60, and the slider part 30 vertically moves up and down on a lifting rod, so that the slider part 30 drives the target radar 60 connected with the slider part to vertically move, and the height of the target radar 60 from the conveyor belt 70 is changed according to the setting; the water level module of the target radar 60 vertically transmits radar waves to the conveyor belt 70 and receives reflected echoes, and the target radar 60 can calculate the height information of the current distance to the conveyor belt 70 according to the running time of the radar waves because the propagation speed of the radar waves in the air is known. The table 50 may compare the calculated height with the set standard height of the slider part 30, thereby correcting the water level module of the target radar 60.
A rotation control signal is sent to the servo motor 80 through the workbench 50, the rotating speed of the servo motor 80 is controlled, and the servo motor 80 drives the conveyor belt 70 to move; the work bench 50 sends a flow rate test control signal to the target radar 60, and a flow rate module of the target radar 60 transmits radar waves to the conveyor belt 70 according to a preset angle direction and receives reflected echoes. The conveyor belt 70 is in a moving state, the target radar 60 is in a static state, as shown in fig. 1, the target radar 60 transmits a radar wave to a position a of the conveyor belt 70, a reflected echo moves to a position b through the conveyor belt 70 and is received by the target radar 60, and because there is relative movement between the radar wave transmitted by the target radar 60 and the received echo, a doppler shift is generated, the target radar 60 can calculate the current speed of the conveyor belt 70 according to a doppler shift formula. Since the linear velocity of the conveyor belt 70 is equal to the linear velocity of the servo motor 80, the stage 50 can obtain a standard velocity according to the set rotation speed of the servo motor 80 and compare the standard velocity with the calculated velocity, thereby correcting the flow velocity module of the target radar 60.
Set for different preset height and predetermine speed through multiple operation and can carry out multidimension degree detection calibration and calibration to radar water level velocity of flow flowmeter equipment many times, solve and can't carry out multidimension degree test verification calibration and calibration problem under different environment to radar water level velocity of flow flowmeter, realize providing accurate simulation experiment data information for flood simulation, river hydrology monitoring and irrigation informationization etc. detect and mark radar water level velocity of flow flowmeter, improve the effect of stability and reliability.
Example two
Fig. 2 is a schematic structural diagram of a radar calibration apparatus according to a second embodiment of the present invention.
On the basis of the technical solution of the above embodiment, as shown in fig. 2, optionally, the surface of the lifting rod 10 is provided with a scale mark 11.
The elevation rod 10 is provided with a scale mark 11 to physically distinguish the height thereof, and further determine the height information of the current slide block part 30.
Optionally, the slider component 30 is composed of an electronic vernier 31 and a stepping motor 32;
the stepping motor 32 is electrically connected to the worktable 50 through a signal line S, and is configured to receive a lifting control signal of the worktable 50 and drive the slider member 30 to move vertically on the lifting rod 10;
the electronic vernier 31 has a display screen for displaying information on the current height of the slider member 30 from the conveyor belt 70.
The step motor 32 adjusts the moving direction and the moving speed according to the lifting control signal of the workbench 50, the slide block component 30 realizes the movement on the lifting rod through the step motor 32, the electronic vernier 31 is matched with the lifting rod for use, the central circular hole of the high-precision electronic vernier 31 passes through the lifting rod 10 with scales, the height of the vertical displacement is measured, and the standard height is formed; the display screen of the electronic vernier 31 is used to display height information of the current distance of the current slider member 30 from the conveyor belt 70, i.e., standard height information; further, the electronic vernier 31 is connected to the table 50 through a signal line S, and transmits the height information of the slider member 30 to the table. The target radar 60 is connected to the stepping motor 32 through a signal line S and thus connected to the work table 50, and transmits the measured height test data to the work table 50 through the signal line S, so that the worker can compare and correct the standard height information and the height test data displayed on the work table 50; further, the worker can compare and correct the height test data displayed by the workbench 50 with the height information displayed by the display screen of the electronic vernier 31.
Optionally, the lifting rod 10 has a tooth groove, a gear is arranged in the stepping motor 32, and the tooth groove is used for matching with the rotation of the gear of the stepping motor 32.
The stepping motor 32 rotates the gear according to the elevation control signal of the table 50, and the gear of the stepping motor 32 can complete the up-and-down movement in cooperation with the tooth grooves of the elevation bar 10.
Optionally, the bottom level of the target radar 60 is kept horizontal with the measuring surface of the electronic vernier 31.
When the target radar 60 is installed, the bottom level of the target radar 60 and the measuring surface of the electronic vernier 31 are kept at the same level, that is, the heights of the target radar 60 and the electronic vernier 31 from the conveyor belt 70 are kept the same, and it is ensured that the height information measured by the target radar 60 corresponds to the standard height information measured by the electronic vernier 31.
Optionally, a bearing (not shown) is provided inside the pulley 90 for tensioning the conveyor belt 70.
The tensioned belt 70 ensures that the target radar 60 test data is accurate.
Optionally, a computer 100 is further included, and the computer 100 is connected to the control board through a signal line (not shown) and is configured to read the control parameter, and is further configured to control the servo motor 80 and the slider member 30 through the control board to simulate an environment in which the target radar 60 measures real-time changes in the water level and the flow rate.
The staff can set various parameters of the water level height test and the flow rate test through the computer 100, and can also set variable environmental parameters through a computer program, thereby carrying out multi-dimensional test on the target radar 60 and further detecting the target radar 60.
The water level data and the flow rate data obtained by the target radar 60 are transmitted to the computer 100 through the signal wire S, and the computer 100 compares and calibrates the collected test data of the target radar 60 with the standard data to enable the test data to meet the standard requirement, so that the target radar 60 can achieve certain accuracy and measurement precision, and the stability and reliability of the target radar can be improved.
Optionally, the surface of the conveyor belt 70 is made of a material having the same effect as that of radar waves reflected by the water surface.
The surface of the conveyor belt is made of a material with the same effect as the surface reflection radar wave, and the reflected radar wave signal is close to the signal intensity of the surface reflection radar wave, so that the reflected radar wave signal is closer to a real application environment, the correction accuracy is improved, and the reliability of the target radar 60 is improved.
The rotating speed of the servo motor and the height of the sliding block component are adjusted through the workbench, the environment that the radar water level flow velocity flowmeter measures the real-time change of the water level flow velocity is simulated, the target radar respectively sends radar waves to the conveyor belt in the vertical direction and the preset angle direction according to the test control signal of the workbench and respectively receives echoes, test data are obtained through calculation, and the target radar is calibrated after the test data are compared with standard data. The problem of can't carry out the test verification calibration and the demarcation of multidimension degree to radar water level velocity of flow flowmeter under different environment is solved, realize carrying out multidimension degree's detection and demarcation to radar water level velocity of flow flowmeter, improve the effect of stability and reliability.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A radar calibration device, comprising: the device comprises a lifting rod, a base, a sliding block component, a horizontal support, a workbench, a target radar, a conveyor belt, a servo motor and a pulley;
the lifting rod is vertically fixed on the base, the sliding block component is installed on the lifting rod through a central round hole, and the sliding block component is fixedly connected with the horizontal support and is electrically connected with the workbench; the slide block component is used for vertically moving on the lifting rod according to a lifting control signal of the workbench;
the target radar is arranged at one end, far away from the sliding block component, of the horizontal support and is used for vertically moving along with the horizontal support; the target radar is electrically connected with the workbench and used for respectively sending radar waves to the conveyor belt in the vertical direction and in the preset angle direction according to the test control signal of the workbench, respectively receiving echoes and calculating to obtain test data;
the servo motor and the pulley are arranged at a preset distance and connected through the conveyor belt; the servo motor is electrically connected with the workbench and is used for rotating according to a rotation control signal of the workbench and driving the conveyor belt to move;
the workbench is used for sending a lifting control signal, a rotation control signal and a test control signal, and calibrating the target radar after comparing the received test data with standard data.
2. The radar calibration device of claim 1, wherein the target radar comprises a water level module and a flow rate module;
the water level module is used for vertically sending first radar waves to the conveyor belt and receiving echoes to obtain water level data through calculation, and the flow velocity module is used for sending second radar waves to the conveyor belt according to a preset angle, receiving echoes and obtaining flow velocity data through calculation.
3. The radar calibration device as recited in claim 1, wherein a surface of said lifter is marked with a scale.
4. The radar calibration device of claim 1, wherein the slider component is composed of an electronic vernier and a stepper motor;
the stepping motor is electrically connected with the workbench through a signal wire and used for receiving a lifting control signal of the workbench and driving the sliding block component to vertically move on the lifting rod;
the electronic vernier has a display screen for displaying height information of the slider member from the conveyor belt at present.
5. The radar calibration device as recited in claim 4, wherein said lifter has a gear slot, and said stepper motor has a gear therein, and said gear slot is adapted to cooperate with the rotation of said gear of said stepper motor.
6. The radar calibration device as recited in claim 4, wherein a bottom level of the target radar is maintained horizontal with a measuring surface of the electronic vernier.
7. The radar calibration device as recited in claim 1, wherein a bearing is disposed inside said pulley for tensioning said conveyor belt.
8. The radar calibration device according to claim 1, wherein a control board is disposed inside the workbench, and a control panel is disposed outside the workbench, the control board is configured to send control signals to control the servo motor and the slider component according to external operations and receive test data, and the control panel is configured to receive external operations and display control parameters and test data.
9. The radar calibration device as recited in claim 8, further comprising a computer, said computer being connected to said control board via signal lines for reading said control parameters, and further being configured to control said servo motor and said slider component via said control board, so as to simulate an environment in which said target radar measures real-time changes in water level and flow rate.
10. The radar calibration device as recited in claim 1, wherein the surface of said conveyor belt is made of a material having the same effect as that of the radar waves reflected by the water surface.
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| CN202110686017.7A CN113296069B (en) | 2021-06-21 | 2021-06-21 | Radar calibration device |
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| CN202110686017.7A CN113296069B (en) | 2021-06-21 | 2021-06-21 | Radar calibration device |
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| CN113296069B (en) | 2023-12-08 |
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