CN113296069B - Radar calibration device - Google Patents
Radar calibration device Download PDFInfo
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- CN113296069B CN113296069B CN202110686017.7A CN202110686017A CN113296069B CN 113296069 B CN113296069 B CN 113296069B CN 202110686017 A CN202110686017 A CN 202110686017A CN 113296069 B CN113296069 B CN 113296069B
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- conveyor belt
- sliding block
- lifting rod
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- 238000012360 testing method Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000002592 echocardiography Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 210000003781 tooth socket Anatomy 0.000 claims 2
- 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
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008054 signal transmission Effects 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
- 238000002474 experimental method Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a radar calibration device. The device comprises: the device comprises a lifting rod, a base, a sliding block component, a horizontal bracket, a workbench, a target radar, a conveyor belt, a servo motor and pulleys; 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 sliding block part vertically moves on the lifting rod; the target radar is arranged at one end of the horizontal bracket, which is far away from the sliding block component, and is used for sending radar waves to the conveyor belt and receiving return waves according to the test control signals so as to obtain test data; the servo motor is connected with the pulley through a conveyor belt; the servo motor rotates and drives the conveyor belt according to the rotation control signal; the workbench transmits lifting control signals, rotation control signals and test control signals, 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 an electronic product calibration technology, in particular to a radar calibration device.
Background
In hydrologic monitoring, flow monitoring and water level monitoring core content, traditional monitoring needs measurement personnel to launch to accomplish, and is long in time consuming, inefficiency. Along with the progress of water conservancy informatization technology, radar water level flow rate flowmeter has obtained popularization and application in China.
Before the radar water level flow rate flowmeter is calibrated, the radar water level flow rate flowmeter usually needs to be measured in a river or a built water tank in an experiment mode, certain errors exist when the height is measured through a ruler, the height and the water flow speed cannot be adjusted in real time in a simulated measurement environment, and therefore test verification, calibration and calibration can be provided without standard data, and multi-dimensional test verification calibration and calibration cannot be conducted on the radar water level flow rate flowmeter under 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 rate flowmeter and improving the stability and reliability.
In a first aspect, an embodiment of the present invention provides a radar calibration device, including: lifting rod, base, slide block component, horizontal support, workbench, target radar, conveyor belt, servo motor and 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 bracket and is electrically connected with the workbench; the sliding 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 of the horizontal bracket far away from the sliding block component and is used for vertically moving along with the horizontal bracket; the target radar is electrically connected with the workbench, and is used for respectively sending radar waves to the conveyor belt according to a vertical direction and a preset angle direction according to a test control signal of the workbench, respectively receiving echoes, and calculating to obtain test data;
the servo motor is arranged at a preset distance from the pulley and is connected with the pulley 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 lifting control signals, rotation control signals and test control signals, and calibrating the target radar after comparing the received test data with standard data.
Optionally, the target radar comprises a water level module and a flow rate module;
the water level module is used for vertically sending a first radar wave to the conveyor belt and receiving a return wave, water level data are obtained through calculation, and the flow rate module is used for sending a second radar wave to the conveyor belt according to a preset angle and receiving an echo, and flow rate data are obtained through calculation.
Optionally, the surface of the lifting rod is provided with scale marks.
Optionally, the sliding block component consists of an electronic vernier and a stepping motor;
the stepping motor is electrically connected with the workbench through a signal wire and is used for receiving a lifting control signal of the workbench and driving the sliding block part to vertically move on the lifting rod;
the electronic vernier has a display screen for displaying the height information of the slider member from the conveyor belt at the present time.
Optionally, the lifting rod is provided with a tooth slot, a gear is arranged in the stepping motor, and the tooth slot is used for matching with the rotation of the gear of the stepping motor.
Optionally, the bottom level of the target radar is kept level with the measurement surface of the electronic vernier.
Optionally, a bearing is arranged inside the pulley for tensioning the conveyor belt.
Optionally, the workstation is inside to be provided with the control panel, and the outside is provided with control panel, the control panel is used for sending control signal according to the external operation with the servo motor with slider part controls, and receive test data, control panel is used for receiving the external operation and shows control parameter and 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 is also used for controlling the servo motor and the sliding block component through the control board and simulating the environment of real-time change of the target radar measured water level and flow rate.
Optionally, the surface of the conveyor belt is made of a material with the same effect as that of the radar wave reflected by the water surface.
According to the invention, the rotating speed of the servo motor and the height of the sliding block component are regulated through the workbench, the environment of real-time change of the water level, the flow speed and the flow of the water level is measured by the simulated radar water level, the flow meter, the radar wave is respectively sent to the conveyor belt according to the test control signal of the workbench in the vertical direction and in the preset angle direction, the echo is respectively received, the test data is obtained through calculation, and the workbench is used for calibrating the target radar after comparing the test data with the standard data. The method solves the problems that the radar water level flow rate flowmeter cannot be subjected to multi-dimensional test verification calibration and calibration under different environments, achieves multi-dimensional detection and calibration of the radar water level flow rate flowmeter, and improves stability and reliability.
Drawings
Fig. 1 is a schematic structural diagram of a radar calibration device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a radar calibration device according to a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a schematic structural diagram of a radar calibration device according to a first embodiment of the present invention, where the embodiment is applicable to testing and correcting a radar water level and flow rate flowmeter with water level and flow rate monitoring functions, and the method may be executed by the radar calibration device, and specifically includes the following steps:
a radar calibration device, comprising: lifting bar 10, base 20, slider member 30, horizontal bracket 40, table 50, target radar 60, conveyor belt 70, servo motor 80 and pulley 90,
the lifting rod 10 is vertically fixed on the base 20, the sliding block component 30 is installed on the lifting rod 10 through a central round hole, and the sliding block component 30 is fixedly connected with the horizontal bracket 40 and is electrically connected with the workbench 50; the slider part 30 is used for vertically moving on the lifting rod 10 according to a lifting control signal of the workbench 50;
the target radar 60 is mounted on an end of the horizontal bracket 40 away from the slider member 30 for following the vertical movement of the horizontal bracket 40; the target radar 60 is electrically connected to the workbench 50, and is configured to send radar waves to the conveyor belt 70 according to a vertical direction and a preset angle direction according to a test control signal of the workbench 50, and receive echoes respectively, and calculate test data;
the servo motor 80 is disposed at a predetermined distance from the pulley 90 and connected through the conveyor belt 70; the servo motor 80 is electrically connected to the workbench 50, and is configured to rotate and drive the conveyor belt 70 to move according to a rotation control signal of the workbench 50;
the workbench 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 workbench 50, a control panel 51 is disposed outside the workbench, the control board is used for controlling the servo motor 80 and the slider part 30 according to an external operation and sending out control signals, and receiving test data, and the control panel 51 is used for receiving the external operation and displaying 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 used for vertically sending a first radar wave to the conveyor belt 70 and receiving a return wave, calculating to obtain water level data, and the flow rate module is used for sending a second radar wave to the conveyor belt 70 according to a preset angle and receiving an echo, and calculating to obtain flow rate data.
The target radar in this embodiment is a radar water level flow rate flowmeter, 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 penetrating through the center thereof, and the slider member 30 is mounted on the lifting bar 10 through the circular hole, and the lifting bar 10 is vertically fixed to the base 20. The base is provided with a servo motor 80 and a pulley 90 at a predetermined distance therefrom and is connected by a conveyor belt 70.
The staff sets up and test signal transmission through the control panel 51 of workstation 50, and control panel control radar calibration device tests target radar 60, receives radar test data and standard data and compares the back to calibrate target radar 60. Specifically, parameter setting and test signal transmission are performed through the control panel of the workbench 50, the control panel transmits a lifting control signal to the slider component 30 and a water level test control signal to the target radar 60, and the slider component 30 performs vertical up-and-down displacement on the lifting rod, so that the slider component 30 drives the target radar 60 connected with the slider component 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 the reflected echoes, and since the propagation speed of the radar waves in the air is known, the target radar 60 can calculate the height information of the current distance from the conveyor belt 70 by the running time of the radar waves. The table 50 may compare the standard height of the slider member 30 with the calculated height according to the set standard height, thereby correcting the water level module of the target radar 60.
The workbench 50 sends a rotation control signal to the servo motor 80, the rotation speed of the servo motor 80 is controlled, and the servo motor 80 drives the conveyor belt 70 to move; the stage 50 transmits 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 in a preset angle direction and receives the 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 radar waves to the position a of the conveyor belt 70, reflected echoes are received by the target radar 60 after the movement of the conveyor belt 70 to the position b, and the target radar 60 can calculate the current speed of the conveyor belt 70 according to a doppler shift formula because of the doppler shift generated by the relative movement between the radar waves transmitted by the target radar 60 and the received echoes. Since the linear velocity of the conveyor belt 70 is equal to the linear velocity of the servo motor 80, the table 50 can obtain a standard velocity according to the set rotational velocity of the servo motor 80 and compare the standard velocity with the calculated velocity, thereby correcting the flow rate module of the target radar 60.
The radar water level flow rate flowmeter device can be subjected to multi-dimensional detection calibration and calibration for multiple times through multiple times of operation setting of different preset heights and preset speeds, the problem that the radar water level flow rate flowmeter cannot be subjected to multi-dimensional test verification calibration and calibration under different environments is solved, accurate simulation experiment data information is provided for flood simulation, river hydrologic monitoring, irrigation informatization and the like, the radar water level flow rate flowmeter is detected and calibrated, and the stability and reliability are improved.
Example two
Fig. 2 is a schematic structural diagram of a radar calibration device according to a second embodiment of the present invention.
On the basis of the technical solution of the foregoing embodiment, as shown in fig. 2, optionally, the surface of the lifting rod 10 is provided with scale marks 11.
The lifting rod 10 is provided with a scale mark 11, so that the height of the lifting rod can be physically distinguished, and the height information of the current sliding block part 30 is further determined.
Optionally, the slider component 30 is composed of an electronic vernier 31 and a stepper motor 32;
the step motor 32 is electrically connected with the workbench 50 through a signal line S, and is configured to receive a lifting control signal of the workbench 50, and drive the slider component 30 to vertically move on the lifting rod 10;
the electronic vernier 31 has a display screen for displaying information of the height of the slider member 30 from the conveyor belt 70 at the present time.
The moving direction and the moving speed of the stepping motor 32 are regulated according to the lifting control signal of the workbench 50, the sliding block part 30 moves on the lifting rod through the stepping motor 32, the electronic vernier 31 is matched with the lifting rod for use, a central round hole of the high-precision electronic vernier 31 penetrates through the lifting rod 10 with scales, the height of up-and-down displacement is measured, and the standard height is formed; the display screen of the electronic vernier 31 is used for displaying the height information of the current sliding block part 30 from the conveyor belt 70, namely standard height information; further, the electronic vernier 31 is also connected to the table 50 via a signal line S, and transmits the height information of the current slider member 30 to the table. The target radar 60 is connected to the stepping motor 32 through a signal line S so as to be connected to the table 50, and transmits the measured height test data to the table 50 through the signal line S, and the worker can compare and correct the standard height information and the height test data displayed by the table 50; further, the staff member can also compare and correct the height test data with the height information displayed on the display screen of the electronic vernier 31 through the table 50.
Optionally, the lifting rod 10 is provided with a tooth slot, and a gear is arranged in the stepper motor 32, and the tooth slot is used for matching with the rotation of the gear of the stepper 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 be matched with the tooth slot of the elevation rod 10 to complete up-and-down movement.
Optionally, the bottom level of the target radar 60 is kept level with the measuring surface of the electronic vernier 31.
When the target radar 60 is installed, the bottom horizontal plane of the target radar 60 and the measuring plane of the electronic vernier 31 are kept at the same horizontal height, namely, the heights of the target radar 60 and the electronic vernier 31 from the conveyor belt 70 are kept at the same, so that the height information measured by the target radar 60 corresponds to the standard height information measured by the electronic vernier 31.
Optionally, bearings (not shown) are provided inside the pulley 90 for tensioning the conveyor belt 70.
Tightening the conveyor belt 70 ensures that the test data of the target radar 60 is accurate.
Optionally, a computer 100 is further included, where the computer 100 is connected to the control board through a signal line (not shown) and is used to read the control parameters, and is further used to control the servo motor 80 and the slider component 30 through the control board, so as to simulate the environment where the target radar 60 measures the real-time change of the water level and the flow rate.
The staff can perform various parameter settings of the water level height test and the flow rate test through the computer 100, and can also set the changed environment parameters through a computer program, so that the target radar 60 is subjected to multi-dimensional test, and the target radar 60 is further detected.
The water level data and the flow rate data obtained by the target radar 60 are transmitted to the computer 100 through the signal line 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 requirements, so that the target radar 60 can reach a certain accuracy and measurement precision, and the stability and reliability of the target radar are improved.
Alternatively, the surface of the conveyor belt 70 may be made of a material having the same effect as the radar wave reflected from the water surface.
The surface of the conveyor belt is made of materials with the same effect as that of the radar wave reflected by the water surface, and the signal intensity of the radar wave reflected by the water surface is close to that of the radar wave reflected by the water surface, so that the radar wave is closer to the real application environment, the correction accuracy is improved, and the reliability of the target radar 60 is improved.
According to the invention, the rotating speed of the servo motor and the height of the sliding block component are regulated through the workbench, the environment of real-time change of the water level, the flow speed and the flow of the water level is measured by the simulated radar water level, the flow meter, the radar wave is respectively sent to the conveyor belt according to the test control signal of the workbench in the vertical direction and in the preset angle direction, the echo is respectively received, the test data is obtained through calculation, and the workbench is used for calibrating the target radar after comparing the test data with the standard data. The method solves the problems that the radar water level flow rate flowmeter cannot be subjected to multi-dimensional test verification calibration and calibration under different environments, achieves multi-dimensional detection and calibration of the radar water level flow rate flowmeter, and improves stability and reliability.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. 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, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A radar calibration device, comprising: the device comprises a lifting rod, a base, a sliding block component, a horizontal bracket, a workbench, a target radar, a conveyor belt, a servo motor and pulleys;
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 bracket and is electrically connected with the workbench; the sliding 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 of the horizontal bracket far away from the sliding block component and is used for vertically moving along with the horizontal bracket; the target radar is electrically connected with the workbench, and is used for respectively sending radar waves to the conveyor belt according to a vertical direction and a preset angle direction according to a test control signal of the workbench, respectively receiving echoes, and calculating to obtain test data;
the servo motor is arranged at a preset distance from the pulley and is connected with the pulley 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 transmitting a lifting control signal, a rotation control signal and a test control signal, comparing the received test data with standard data and then calibrating the target radar;
the workbench is internally provided with a control board, the outside is provided with a control panel, the control board is used for sending control signals according to external operation to control the servo motor and the sliding block component and receiving test data, and the control panel is used for receiving the external operation and displaying control parameters and the test data;
the radar calibration device 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 controlling the servo motor and the sliding block component through the control board and simulating the environment of real-time change of the target radar measured water level and flow rate.
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 a first radar wave to the conveyor belt and receiving a return wave, water level data are obtained through calculation, and the flow rate module is used for sending a second radar wave to the conveyor belt according to a preset angle and receiving an echo, and flow rate data are obtained through calculation.
3. The radar calibration device according to claim 1, wherein the surface of the lifting rod is provided with scale marks.
4. The radar calibration device according to claim 1, wherein the slider member is composed of an electronic vernier and a stepping motor;
the stepping motor is electrically connected with the workbench through a signal wire and is used for receiving a lifting control signal of the workbench and driving the sliding block part to vertically move on the lifting rod;
the electronic vernier has a display screen for displaying the height information of the slider member from the conveyor belt at the present time.
5. The radar calibration device according to claim 4, wherein the lifting rod is provided with a tooth socket, a gear is arranged in the stepping motor, and the tooth socket is used for matching with the rotation of the gear of the stepping motor.
6. The radar calibration device according to claim 4, wherein a bottom level of the target radar is kept level with a measurement surface of the electronic vernier.
7. The radar calibration device according to claim 1, wherein bearings are provided inside the pulleys for tightening the conveyor belt.
8. The radar calibration device according to claim 1, wherein the surface of the conveyor belt is made of a material having the same effect as that of the radar wave reflected from the water surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110686017.7A CN113296069B (en) | 2021-06-21 | 2021-06-21 | Radar calibration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110686017.7A CN113296069B (en) | 2021-06-21 | 2021-06-21 | Radar calibration device |
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| CN114019487A (en) * | 2021-11-11 | 2022-02-08 | 铁将军汽车电子股份有限公司 | Vehicle-mounted radar calibration method, device and apparatus |
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