CN114791283A - Device for dynamically eliminating influence of corrugations on water surface evapotranspiration measurement - Google Patents
Device for dynamically eliminating influence of corrugations on water surface evapotranspiration measurement Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 238000005259 measurement Methods 0.000 title claims abstract description 34
- 230000009471 action Effects 0.000 claims abstract description 12
- 238000005381 potential energy Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 86
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- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 2
- 230000008030 elimination Effects 0.000 description 8
- 238000003379 elimination reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
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- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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Abstract
The invention discloses a device for dynamically eliminating the influence of ripples on water surface evapotranspiration measurement. The device is applied to water surface evapotranspiration measuring equipment and comprises an automatic balancing component, a ripple eliminating component and a pressure detecting component, wherein the automatic balancing component is used for adjusting the balance state of the water surface evapotranspiration measuring equipment in a water area to be measured by utilizing the action of a lever principle; the pressure detection assembly is used for measuring impact force information of water flow ripples in a water area to be detected; the ripple eliminating assembly comprises a telescopic grid plate with a controller, the telescopic grid plate is sleeved outside an integral structure formed by the water surface evapotranspiration measuring equipment and the automatic balancing assembly, and the controller is used for controlling the telescopic grid plate to extend according to impact force information so as to eliminate potential energy of water surface ripples in the vertical direction. The invention can improve the stability of the water surface evapotranspiration measuring equipment, reduce the influence of external interference factors on the measuring precision and improve the measuring precision.
Description
Technical Field
The invention belongs to the technical field of evapotranspiration measurement, and particularly relates to a device for dynamically eliminating influence of ripples on water surface evapotranspiration measurement.
Background
The water surface evapotranspiration is always used as a water consumption consumer of rivers and lakes, and is a non-negligible factor in hydrological analysis planning, the evapotranspiration is used as an important parameter in a hydrological model, and the measurement of the evapotranspiration has important influence on hydrological simulation, water resource planning and other aspects, so that the improvement of the measuring progress of the evapotranspiration has very important practical significance.
When fluid passes through the water surface evapotranspiration measuring equipment, vortices alternately fall off at two sides of the downstream of the water surface evapotranspiration measuring equipment, so that the applied lift force and resistance of the fluid are periodically changed, the periodic change can cause the vibration of the water surface evapotranspiration measuring equipment, and the long-term vibration causes the fatigue damage of the water surface evapotranspiration measuring equipment, thereby influencing the measuring and calculating precision of the water surface evapotranspiration.
At present, in order to ensure that a water surface evapotranspiration measuring device is not easily damaged by external interference factors, a common technical means is to prevent the evapotranspiration measuring device from being influenced by the external interference factors in a support and rod mode, and realize the stability control of the measuring device. Although these techniques have certain promotion to the measurement accuracy of evapotranspiration on the original technical level, the overall stability of equipment is relatively poor, and only limited stability of equipment under the condition of smaller environmental change can be ensured, and the influence of the impact force of water flow generated by other devices on the water surface on the stability of equipment can not be overcome.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a device for dynamically eliminating the influence of ripples on the measurement of water surface evapotranspiration, and aims to improve the stability of water surface evapotranspiration measurement equipment, reduce the influence of external interference factors on measurement precision and improve the measurement precision.
In order to achieve the aim, the invention provides a device for dynamically eliminating the influence of corrugations on the measurement of water surface evapotranspiration, which is applied to water surface evapotranspiration measurement equipment and comprises an automatic balancing component, a corrugation eliminating component and a pressure detection component, wherein,
the water surface evapotranspiration measuring equipment is fixed above the automatic balancing component through a link rod when working, and the automatic balancing component is used for adjusting the balance state of the water surface evapotranspiration measuring equipment in a water area to be measured by utilizing the action of a lever principle;
the pressure detection assembly is used for measuring impact force information of water flow ripples in a water area to be detected;
the ripple eliminating assembly comprises an extensible grid plate with a controller, the extensible grid plate is sleeved outside an integral structure formed by the water surface evapotranspiration measuring equipment and the automatic balancing assembly, the bottom of the extensible grid plate is fixedly connected with the periphery of the outer side of the automatic balancing assembly through a plurality of first metal rods distributed at intervals, and the controller is used for controlling the extension of the extensible grid plate to eliminate the potential energy of water surface ripples in the vertical direction according to the impact force information.
Compared with the traditional method for improving the stability of the water surface evapotranspiration measuring equipment in the measuring process in the form of a bracket and a rod, the device for dynamically eliminating the influence of corrugations on the water surface evapotranspiration measuring comprises an automatic balancing component, the water surface evapotranspiration measuring equipment is fixed above the automatic balancing component, and the automatic balancing component realizes the balance state of the water surface evapotranspiration measuring equipment in water by using the action of a lever principle, so that the stability of the water surface evapotranspiration measuring equipment can be effectively improved, and the water operation of the water surface evapotranspiration measuring equipment is ensured; simultaneously, the device that dynamic elimination ripple provided of this embodiment measured influence to surface of water evapotranspiration still including the ripple elimination subassembly that has retractable palace check board, eliminates the surface of water ripple that external disturbance factor produced in the ascending potential energy of vertical direction through the extension of control retractable palace check board to eliminate the surface of water ripple, improve measurement accuracy.
In one embodiment, the telescopic grid plate comprises a plurality of telescopic assemblies, an inner annular grid plate and an outer annular grid plate which are nested and closely connected, the telescopic assemblies are arranged at the close connection positions of the inner annular grid plate and the outer annular grid plate, and the bottom of the outer annular grid plate is fixedly connected with the outer periphery of the automatic balancing assembly through a plurality of first metal rods which are distributed at intervals;
the inner ring-shaped grid plate and the outer ring-shaped grid plate respectively comprise a plurality of ring-shaped membrane groups consisting of two wavy ring-shaped membranes, each ring-shaped membrane is provided with a plurality of array through holes, and the two ring-shaped membranes in each ring-shaped membrane group are tightly attached and connected in a staggered manner; the telescopic assembly comprises a first motor, and a first rack and a first gear which are meshed with each other, the first gear is fixedly connected with an output shaft of the first motor, the first gear is arranged on the outer wall of the inner annular grid plate, the first rack is vertically arranged on the inner wall of the outer annular grid plate, and the tooth crest height of two end parts of the first rack is greater than that of the middle part of the first rack.
In one embodiment, the automatic balancing assembly comprises a cylindrical balancing plate with uniform mass distribution, a circular slideway is arranged at the edge of the top surface of the balancing plate, a spherical iron block A with a level sensor A is placed in the circular slideway, and a position sensor for sensing the position information of the spherical iron block A is arranged on the outer wall of the slideway; a plurality of spherical iron blocks B with the same mass are annularly distributed in the middle of the balance plate around the circle center, the spherical iron blocks B are correspondingly and fixedly connected with the circle center through a telescopic metal rod, and a horizontal height sensor B and an information processor are arranged at the circle center;
wherein the information processor is used for detecting height information h according to the horizontal height sensor A A And height information h detected by the level sensor B 0 And the position information of the spherical iron block A detected by the position sensor controls the extension length of each telescopic metal rod by utilizing the action of a lever principle so that the water surface evapotranspiration measuring equipment reaches a balanced state.
In one embodiment, the number of the spherical iron blocks B is set to be N, wherein N is more than or equal to 2; the position sensor is an angle sensor which feeds back position information of the spherical iron block A in the form of an angle alpha, wherein the angle alpha is defined by dividing the circular slideway into N units and respectively corresponding to the N units, and 0 degrees < alpha < N degrees.
In one embodiment, the number of the spherical iron blocks B is set to 360.
In one embodiment, the length of the telescopic metal rod corresponding to each spherical iron block B is as follows:
in the formula I n The length of the extended arm of the nth telescopic metal rod is shown, and the number of each telescopic metal rod is according to the following rule: the number of the telescopic metal rods at the position corresponding to the spherical iron block A is n-180, the number of the telescopic metal rods in the anticlockwise direction is n-179, 178, … … and 0, and the number of the telescopic metal rods in the clockwise direction is 181, 182, … … and 360; m represents the mass of the spherical iron block B; r represents a radius of the balance plate; beta represents the angle at which the balance plate is inclined,
in one embodiment, the retractable metal rod comprises a second metal rod, a hollow sleeve with an opening at one end, a second motor, a second rack and a second gear, the second rack is horizontally arranged on the inner wall of one side of the hollow sleeve, the outer part of one side of the second metal rod is closely attached to the inner wall of the other side of the hollow sleeve, one end of the second metal rod positioned in the hollow sleeve is meshed with the second rack through the second gear, the second gear is fixedly connected with the output shaft of the second motor, and the tooth crest height of two end parts of the second rack is greater than the tooth crest height of the middle part of the second metal rod.
In one embodiment, the pressure detection assembly employs a pressure sensor disposed on the chain bar.
In one embodiment, the water surface evapotranspiration measuring device adopts an E601 evaporating dish.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for dynamically eliminating the influence of ripples on water surface evapotranspiration measurement according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a telescopic assembly in a telescopic grid plate according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an inner/outer ring grid plate in a retractable grid plate according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an auto-balancing assembly according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating the construction of the retractable metal rod of the automatic balancing assembly of fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a device for dynamically eliminating the influence of ripples on the measurement of water surface evapotranspiration, which can effectively improve the stability of the water surface evapotranspiration measuring equipment, reduce the influence of external interference factors on the measurement precision and improve the measurement precision.
Fig. 1 is a device for dynamically eliminating the influence of ripples on the measurement of water surface evapotranspiration according to an embodiment of the present invention, and the device is mainly applied to a water surface evapotranspiration measurement device 50, such as an E601 evaporation pan commonly used in the art, for measuring water surface evapotranspiration of rivers and lakes.
In order to improve the stability of the water surface evapotranspiration measuring device 50 in the measuring process, the device for dynamically eliminating the influence of the corrugations on the water surface evapotranspiration measurement provided by the embodiment comprises an automatic balancing component 10, the water surface evapotranspiration measuring device 50 is fixed above the automatic balancing component 10 through a link rod 12 during operation, and the link rod 12 provided by the embodiment preferably adopts a link metal rod. The automatic balance assembly 10 utilizes the action of the lever principle to adjust the balance state of the water surface evapotranspiration measuring device 50 in the water area to be measured, and in this embodiment, all the structural forms of the automatic balance assembly 10 designed by utilizing the action of the lever principle are suitable for the invention.
For reducing the impact force that the surface of water ripple produced to evapotranspiration measurement accuracy's influence, the device of the dynamic elimination ripple that this embodiment provided to the surface of water evapotranspiration measurement influence still includes pressure measurement subassembly (not shown in the figure) and ripple elimination subassembly.
In this embodiment, the pressure detecting assembly may employ a pressure sensor for measuring impact force information of water flow ripples in the water area to be measured. In particular, the pressure sensor may be provided on the link lever 12.
The ripple eliminating component comprises a telescopic grid plate 20 with a controller, the telescopic grid plate 20 is sleeved outside an integral structure formed by the water surface evapotranspiration measuring equipment 50 and the automatic balancing component 10, and the controller is used for controlling the telescopic grid plate 20 to extend or contract according to impact force information. Specifically, when the impact force of the water flow ripple is greater than or equal to the threshold value F 0 When the waves are transmitted to the telescopic grid plate 20, the array through holes on the telescopic grid plate 20 can eliminate the potential energy of the wave energy in the vertical direction, and the water flow impact force in the horizontal direction is decomposed to different directions, so that the influence of the waves on the measuring device is reduced; when the impact force of water flow ripple is greater than or equal to the threshold value F 0 When the user wants to use the retractable palace lattice plate 20, the controller controls the retractable palace lattice plate to retract and return to the initial state.
In order to maintain the measuring function of the water surface evapotranspiration measuring device 50 and ensure that the whole device is better immersed in water and has better balance capability, the bottom of the retractable palace lattice plate 20 provided by the embodiment is fixedly connected with the outer periphery of the automatic balancing component 10 by adopting a plurality of first metal rods 22 distributed at intervals.
Compared with the traditional method that the stability of the water surface evapotranspiration measuring equipment 50 in the measuring process is improved in the form of a support and a rod, the device for dynamically eliminating the influence of corrugations on the water surface evapotranspiration measurement provided by the embodiment comprises an automatic balance assembly 10, the water surface evapotranspiration measuring equipment 50 is fixed above the automatic balance assembly 10, and the automatic balance assembly 10 realizes the balance state of the water surface evapotranspiration measuring equipment 50 in water by utilizing the action of a lever principle, so that the stability of the water surface evapotranspiration measuring equipment 50 can be effectively improved, and the water operation of the water surface evapotranspiration measuring equipment 50 is ensured; simultaneously, the device that dynamic elimination ripple provided of this embodiment was measured influence to surface of water evapotranspiration still is including the ripple elimination subassembly that has retractable palace check board 20, eliminates the surface of water ripple on the vertical direction potential energy that external disturbance factor produced through the extension of control retractable palace check board 20 to eliminate the surface of water ripple, improve measurement accuracy.
In one embodiment, the retractable grid 20 provided by the present invention may include a plurality of retractable assemblies and inner and outer annular grid plates nested and closely connected, the retractable assemblies being disposed at the close connection of the inner and outer annular grid plates. Preferably, the retractable grid plate 20 can adopt 2 retractable components, and the 2 retractable components are correspondingly arranged at two opposite close connection positions in an annular structure formed by the inner annular grid plate and the outer annular grid plate.
Referring to fig. 2, the telescopic assembly provided in this embodiment may adopt a structure form including a first motor (not shown in the figure), and a first rack 24 and a first gear 26 that are engaged with each other, where the first gear 24 is fixedly connected with an output shaft of the first motor, the first gear 24 is disposed on an outer wall of the inner annular grid plate, and the first rack is vertically disposed on an inner wall of the outer annular grid plate.
Referring to fig. 3, the inner annular grid plate and the outer annular grid plate provided in this embodiment may each include a plurality of annular diaphragm groups formed by two wavy annular diaphragms, where the wavy annular diaphragm is a rectangular parallelepiped sheet folded into a wavy shape, and the contact area between the wavy annular diaphragm and the corrugations may be increased, so as to achieve faster elimination of potential energy of wave energy in the vertical direction. Each annular diaphragm is provided with a plurality of array through holes, and two annular diaphragms in each annular diaphragm group are tightly attached and staggered to each other, so that the middle of each annular diaphragm is concave to form an oval shape. And the bottom of the outer ring-shaped grid plate provided by the embodiment is fixedly connected with the outer periphery of the automatic balancing assembly 10 through a plurality of first metal rods 22 which are distributed at intervals.
The working principle of the retractable grid plate 20 provided by this embodiment is as follows: pressure measurement subassembly will be real-time measurement the controller in water area that awaits measuring rivers ripple's impact force information transmission to retractable palace check board 20 that obtains, when this rivers impact force is unusual rivers impact force when the controller is judged, send control signal to the first motor in retractable palace check board 20, drive first gear 24 through first motor and move on first rack 26, because outer annular palace check board is fixed on the periphery lateral wall of automatic balance subassembly 10, make outer annular palace check board keep motionless, inner annular palace check board then rises to the horizontal plane direction through first motor, up inner annular palace check board upper surface and horizontal plane co-altitude, reach the purpose of extension retractable palace check board 20. When the waves are transmitted to the telescopic grid plate 20, the array through holes on the inner ring-shaped grid plate and the outer ring-shaped grid plate can eliminate the potential energy of the wave energy in the vertical direction, and the impact force of the water flow in the horizontal direction is decomposed to different directions, so that the influence of the waves on the measuring device is reduced.
In this embodiment, in order to prevent the inner annular grid plate provided in this embodiment from separating from the outer annular grid plate when the inner annular grid plate rises from the inner annular grid plate, the tooth crest height of both end portions of the first rack 26 provided in this embodiment may be set to be greater than the tooth crest height of other portions.
In one embodiment, the automatic balance assembly 10 of the present invention is designed to maintain the balance state of the surface evapotranspiration measuring device 50 during operation in water, and its specific structure can be seen in fig. 4, which includes a cylindrical balance plate 11 with uniform mass distribution, a circular slideway is provided on the top edge of the balance plate, a spherical iron block a with a level sensor a is placed in the circular slideway, its mass is m, and the real-time dynamic height positioning of the level sensor a is h A And a position sensor for sensing the position information of the spherical iron block A is arranged on the outer wall of the slideway.
A plurality of spherical iron blocks B with the same mass are distributed in the middle of the balance plate 11 in an annular manner around the circle center, the mass of each spherical iron block B is M, the spherical iron blocks B are correspondingly fixedly connected with the circle center through the telescopic metal rods 12, an information processor and a level sensor B are arranged at the circle center, and the level sensor B is dynamically positioned in a height h in real time 0 。
Wherein the information processor is used for detecting height information h according to the horizontal height sensor A A Height information h detected by the level sensor B 0 And a position sensorThe detected position information of the spherical iron block A controls the extending length of each telescopic metal rod 12 by utilizing the action of the lever principle to enable the balance plate 11 to reach a balance state, and further enable the water surface evapotranspiration measuring equipment 50 fixed on the balance plate 11 to reach a balance state.
Specifically, referring to fig. 5, the retractable metal rod 12 provided in this embodiment may adopt a structural form including a second metal rod 122, a hollow sleeve 124 with an open end, a second motor (not shown in the drawings), a second rack 126 and a second gear 128, wherein the second rack 128 is horizontally disposed on an inner wall of one side of the hollow sleeve 124, an outer portion of one side of the second metal rod 122 is closely disposed on an inner wall of the other side of the hollow sleeve 124, one end of the second metal rod 122 located in the hollow sleeve 124 is engaged with the second rack 126 through the second gear 128, and the second gear 128 is fixedly connected with an output shaft of the second motor. When the information processor calculates the extension information of each retractable metal rod 12, it sends a control signal to the second motor in each retractable metal rod 12, so that the second motor drives the second metal rod 122 to move out of the hollow sleeve 124, thereby achieving the purpose of extension.
Of course, the retractable metal rod 12 provided in this embodiment may also adopt other structural forms, and this embodiment is not limited, and only needs to satisfy the purpose that it can receive the control signal output by the information processor to achieve the metal rod extension. Further, in order to prevent the second metal rod 122 provided in this embodiment from being separated from the hollow sleeve 124 when extending from the outside of the hollow sleeve 124, the tooth crest height of the two end portions of the second rack 126 provided in this embodiment is set to be greater than the tooth crest height of the other portions.
Meanwhile, in order to monitor the real-time horizontal stable state of the whole device and facilitate the subsequent calculation of the extended length of each retractable metal rod 12, the position sensor provided in this embodiment preferably employs an angle sensor, and the angle sensor feeds back the position information of the spherical iron block a in the form of an angle α, where the angle α is defined by dividing the circular slide into N units and corresponding to each unit, 0 ° < α < N °, and N is the number of the spherical iron blocks B. Preferably, the number of the spherical iron blocks B provided by the present embodiment may be set to 360 to accurately assist the device in achieving automatic balancing.
The working principle of the automatic balance assembly 10 for adjusting the balance state of the water surface evapotranspiration measuring device 50 provided by the embodiment is as follows:
when the balance plate 11 is inclined due to an external disturbance factor, the inclination angle β is:
and the force analysis of the device can know that:
in the formula, M' represents the total mass of the device and the water surface evapotranspiration measuring equipment; f represents the equivalent resultant force of the impact force of the water flow, and the action point is the highest point when the device inclines.
According to the lever principle, the following equation is given:
in the formula I n For the extended arm length of the nth telescopic metal rod 12, the number of each telescopic metal rod 12 should be according to the following rule: the numbers of the telescopic metal rods 12 at the positions corresponding to the spherical iron blocks A are n-180, the numbers of the telescopic metal rods 12 in the counterclockwise direction are 179, 178, … … and 0 respectively, and the numbers of the telescopic metal rods 12 in the clockwise direction are 181, 182, … … and 360 respectively; l represents the length of the link rod; r represents the radius of the balance plate.
The required torque of each spherical iron block B is set to
The following equation is obtained by assigning the functions of (a):
therefore, the extension length of the retractable metal rod corresponding to each spherical iron block B is:
after the telescopic metal rod 12 is extended, the moment applied to the higher part of the balance plate 11 is increased due to the lever principle, so that the balance plate is further converted to a balance state, and finally the balance plate 11 tends to be balanced to complete the function.
The automatic balance subassembly 10 that this embodiment provided is through carrying out dynamic horizontality monitoring to balance plate 11, through the length that lasts each retractable metal pole 12 of dynamic adjustment, makes balance plate 11 reach the equilibrium state, and then can make the surface of water evapotranspiration measuring equipment who fixes on balance plate 11 reach the equilibrium state, is favorable to its operation on water, improves its measurement progress.
In order to more clearly illustrate the device for dynamically eliminating the influence of ripples on the measurement of water surface evapotranspiration, the following description is made with reference to specific embodiments:
the parameters of the device are set as follows: the length L of the interlinkage metal rod with the pressure sensor is 500mm, the radius R of the balance plate is 500mm, the mass M of the spherical iron block A is 1kg, the mass M of the spherical iron block B is 1kg, the initial length R of the telescopic metal rod is 100mm, and the maximum telescopic length R is max ＝400mm。
The water surface evapotranspiration measuring equipment is fixed above the automatic balancing component of the device through the linking metal rod, then the water surface evapotranspiration measuring equipment is integrally arranged in the water area to be measured, the linking metal rod with the pressure sensor starts to work with the balancing plate at the moment, and the two work influences each other but are independent respectively.
With regard to the linking metal rod: when the water flow is disturbed due to external interference factors, water flow impact is caused on the device, and the water flow impact reaches a threshold value F 0 When the water flow is detected to be abnormal, the pressure sensor monitors the impact force of the abnormal water flow, and the controller triggers the inner annular grid plate in the telescopic grid plate to extend to the water surface; when the pressure sensor on the outer wall of the telescopic corrugated elimination grid plate monitors that the impact force of water flow is smaller than a threshold value, the controller triggers an inner annular grid plate in the telescopic grid plate to contract and restore to an initial state.
With respect to the balance plate: and the horizontal height sensors at the positions of the small ball A and the circle center O in the balance plate read the height position at any time by the frequency f so as to judge the horizontal state of the device, and when the device is horizontal, the device does not respond, and the horizontal height sensors continuously read the height position information. When the device is inclined, the inclination angle beta is as follows:
and has the following components:
when the height is not horizontal, the spherical iron block A is divided according to the position of the spherical iron block A and each unit (360 correspondingly defined units in total) in the circular slideway, and the position of the spherical iron block A in the slideway is read through an angle sensor. Further, the reading ball position is α.
Then, determining a telescopic metal rod (or a spherical iron block B closest to the spherical iron block A) corresponding to the unit range according to the position alpha of the spherical iron block A, numbering n, and calculating according to the following expression by using a simultaneous equation:
substituting the data to obtain the extension distance of the telescopic metal rod corresponding to each spherical iron block B as l n After the telescopic metal rod is stretched, the moment applied to the higher part of the balance plate is increased due to the action of the lever principle, so that the balance plate is further converted to a balance state, and finally the balance plate tends to be balanced to complete the function of the telescopic metal rod. The balance plate is continuously dynamically adjusted until the balance plate reaches a balance state.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A device for dynamically eliminating the influence of corrugations on the measurement of water surface evapotranspiration is applied to water surface evapotranspiration measurement equipment and is characterized by comprising an automatic balancing component, a corrugation eliminating component and a pressure detection component, wherein,
the water surface evapotranspiration measuring equipment is fixed above the automatic balancing component through a link rod when working, and the automatic balancing component is used for adjusting the balance state of the water surface evapotranspiration measuring equipment in a water area to be measured by utilizing the action of a lever principle;
the pressure detection assembly is used for measuring impact force information of water flow ripples in a water area to be detected;
the ripple eliminating assembly comprises a telescopic grid plate with a controller, the telescopic grid plate is sleeved outside an integral structure formed by the water surface evapotranspiration measuring equipment and the automatic balancing assembly, the bottom of the telescopic grid plate is fixedly connected with the periphery of the outer side of the automatic balancing assembly through a plurality of first metal rods distributed at intervals, and the controller is used for controlling the telescopic grid plate to extend according to the impact force information to eliminate potential energy of water surface ripples in the vertical direction.
2. The device for dynamically eliminating the influence of corrugations on water surface evapotranspiration measurement according to claim 1, wherein the retractable grid plates comprise a plurality of retractable assemblies, an inner annular grid plate and an outer annular grid plate which are nested and connected in a close-fitting manner, the retractable assemblies are arranged at close-fitting connection positions of the inner annular grid plate and the outer annular grid plate, and the bottom of the outer annular grid plate is fixedly connected with the outer periphery of the automatic balancing assembly through a plurality of first metal rods distributed at intervals;
the inner ring-shaped grid plate and the outer ring-shaped grid plate respectively comprise a plurality of ring-shaped membrane groups consisting of two wavy ring-shaped membranes, each ring-shaped membrane is provided with a plurality of array through holes, and the two ring-shaped membranes in each ring-shaped membrane group are tightly attached and connected in a staggered manner; the telescopic assembly comprises a first motor, and a first rack and a first gear which are meshed with each other, the first gear is fixedly connected with an output shaft of the first motor, the first gear is arranged on the outer wall of the inner annular grid plate, the first rack is vertically arranged on the inner wall of the outer annular grid plate, and the tooth crest height of two end parts of the first rack is greater than that of the middle part of the first rack.
3. The device for dynamically eliminating the influence of corrugations on water surface evapotranspiration measurement according to claim 1, wherein the automatic balancing assembly comprises a cylindrical balancing plate with uniform mass distribution, a circular slideway is arranged at the edge of the top surface of the balancing plate, a spherical iron block A with a horizontal height sensor A is placed in the circular slideway, and a position sensor for sensing the position information of the spherical iron block A is arranged on the outer wall of the slideway; a plurality of spherical iron blocks B with the same mass are annularly distributed in the middle of the balance plate around the circle center, the spherical iron blocks B are correspondingly and fixedly connected with the circle center through a telescopic metal rod, and a horizontal height sensor B and an information processor are arranged at the circle center;
wherein the information processor is used for detecting height information h according to the horizontal height sensor A A And height information h detected by the level sensor B 0 And the position information of the spherical iron block A detected by the position sensor controls the extension length of each telescopic metal rod by utilizing the action of a lever principle so that the water surface evapotranspiration measuring equipment reaches a balanced state.
4. The device for dynamically eliminating the influence of the corrugations on the measurement of the water surface evapotranspiration as claimed in claim 3, wherein the number of the spherical iron blocks B is N, and N is more than or equal to 2; the position sensor adopts an angle sensor which feeds back position information of the spherical iron block A in the form of an angle alpha, wherein the angle alpha is defined by dividing the circular slideway into N units and correspondingly respectively, and 0 degrees < alpha < N degrees.
5. The device for dynamically eliminating the influence of ripples on water surface evapotranspiration measurement according to claim 4, wherein the number of spherical iron blocks B is set to 360.
6. The device of claim 5, wherein the length of the telescopic metal rod corresponding to each spherical iron block B is as follows:
in the formula I n The length of the extended arm of the nth telescopic metal rod is shown, and the number of each telescopic metal rod is according to the following rule: the number n of the telescopic metal rod at the position corresponding to the spherical iron block A is 180, and the telescopic metal rod is anticlockwiseThe telescopic metal rods on the telescopic metal rod are sequentially and correspondingly 179, 178, … … and 0, and the telescopic metal rods on the clockwise direction are sequentially 181, 182, … … and 360; m represents the mass of the spherical iron block B; r represents a radius of the balance plate; beta represents the angle at which the balance plate is inclined,
7. the device of claim 3, wherein the retractable metal rod comprises a second metal rod, a hollow sleeve with an open end, a second motor, a second rack, and a second gear, the second rack is horizontally disposed on an inner wall of one side of the hollow sleeve, the second metal rod is closely disposed on an inner wall of the other side of the hollow sleeve, one end of the second metal rod located in the hollow sleeve is engaged with the second rack through the second gear, the second gear is fixedly connected to the output shaft of the second motor, and the tooth crest height of the two end portions of the second rack is greater than the tooth crest height of the middle portion of the second rack.
8. The apparatus of claim 1, wherein the pressure detecting assembly employs a pressure sensor, and the pressure sensor is disposed on the chain link.
9. The apparatus of claim 1, wherein the apparatus for measuring surface evaporation is an E601 evaporating dish.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989800A (en) * | 2017-05-16 | 2017-07-28 | 长江水利委员会水文局 | One kind floating evaporation from water surface station liquid level device for accurately measuring |
| CN110409515A (en) * | 2019-08-08 | 2019-11-05 | 中国港湾工程有限责任公司 | Pile Foundation of Wharf scour protection device |
| CN111959685A (en) * | 2020-08-27 | 2020-11-20 | 浙江海洋大学 | Power generation type buoy with improved structure |
| CN112722183A (en) * | 2020-07-15 | 2021-04-30 | 上海海事大学 | Installation method of marine hull balancing device |
| CN215252630U (en) * | 2021-01-14 | 2021-12-21 | 长沙理工大学 | Wave dissipation box and wave dissipation device |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989800A (en) * | 2017-05-16 | 2017-07-28 | 长江水利委员会水文局 | One kind floating evaporation from water surface station liquid level device for accurately measuring |
| CN110409515A (en) * | 2019-08-08 | 2019-11-05 | 中国港湾工程有限责任公司 | Pile Foundation of Wharf scour protection device |
| CN112722183A (en) * | 2020-07-15 | 2021-04-30 | 上海海事大学 | Installation method of marine hull balancing device |
| CN111959685A (en) * | 2020-08-27 | 2020-11-20 | 浙江海洋大学 | Power generation type buoy with improved structure |
| CN215252630U (en) * | 2021-01-14 | 2021-12-21 | 长沙理工大学 | Wave dissipation box and wave dissipation device |
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