CN212206270U

CN212206270U - Double-precision variable-frequency water level gauge based on hydraulic automatic posture correction

Info

Publication number: CN212206270U
Application number: CN202021288286.5U
Authority: CN
Inventors: 林岚; 陈伟; 侯琳
Original assignee: Research Center For Basin Planning And Policy Of Songliao Water Conservancy Commission
Current assignee: Research Center For Basin Planning And Policy Of Songliao Water Conservancy Commission
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2020-12-22
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a double-precision frequency conversion fluviograph based on automatic appearance of rectifying of water conservancy. The device comprises a supporting pile and a floating ruler, wherein a circuit control assembly is installed in the floating ruler, a hydraulic turbine motor and a measuring cylinder are installed on the floating ruler, a floating plate is installed in the measuring cylinder, a fixed grid sensor II and a movable grid sensor II are respectively installed on the measuring cylinder and the floating plate, the floating ruler is installed on a floating plate support, the floating plate support is installed on a fixed installation module through a supporting beam, the fixed installation module is supported by a supporting pile I and a supporting pile II which are coaxially installed, and a movable grid sensor I and a fixed grid sensor I are respectively installed on the supporting pile I and the supporting pile II. The utility model has simple structure and does not need artificial energy supply; after the device is installed, multiple functions of autonomously correcting the posture and observing the water level and the flow speed are realized, and water level variable frequency measurement can be realized according to the change of the flow speed of water flow; the utility model discloses have the double-precision measurement, provide the basis for data correction and many parties use.

Description

Double-precision variable-frequency water level gauge based on hydraulic automatic posture correction

Technical Field

The utility model discloses the creation belongs to hydrology and measures technical field, especially relates to a double-precision frequency conversion fluviograph based on automatic appearance of rectifying of water conservancy.

Background

The monitoring of the water level of the river basin is one of the important works of hydrological data measurement and calculation, and the water level data is closely related to human social life and production and is an important basis for hydraulic engineering planning, design, construction and management. The detection precision and frequency are particularly important for flood control and drought control.

Typically using a water gauge and a water gauge. The observation time and the observation times are different along with the hydrologic forecast and the hydrologic information demand, generally, the daily measurement is carried out for 1-2 times, the observation times are increased according to the measurement demand in the flood season of rainy season, and the observation result is a process capable of completely reflecting the water level change. At present, a red and blue double-color hydrological ruler is widely used, the precision is in the centimeter level, and 1 meter is generally taken as one section. In the use process, a measurer needs to measure the water level elevation on the spot and identify the water level elevation by naked eyes, the work consumes great manpower and material resources, and in addition, under the condition of severe water level fluctuation, the data error is increased by the average value of artificial visual measurement.

In order to satisfy the urgent demand of water conservancy safety and water resource development, management, improve the precision to the hydrology data, reduce and acquire the degree of difficulty, various level sensor use and give birth to, include: float type water level sensor, piezoresistive pressure water level sensor, heat conduction water level sensor, electric conduction water level sensor, ultrasonic water level sensor and light grating sensor. In addition, based on the combination of a camera and a water gauge, the image recognition technology is also applied and developed in the field of water level measurement. However, the existing measurement methods have disadvantages of self, and the common disadvantages are that the recorded data is greatly influenced by water level fluctuation during measurement, the variance of the integral data set deviating from an actual value is large, the sample of the data set is single, and the algorithm correction is inconvenient. In addition, the measuring equipment and the like are easy to incline ectopically due to the impact of floaters, and thus the measured data can be invalid.

In addition, the water level gauge can not be installed without a fixing device, and the fixing device of the existing water level gauge has different forms, but can be roughly divided into a bracket, an upper end fixing device and a base fixing device. When the existing water level gauge is installed, a base fixing device needs to be installed at a designated position, then a support is fixed on the base fixing device, and finally a water gauge is fixed on the base fixing device through an upper end fixing device. At fixed in-process, satisfying under firm requirement, hardly avoid water gauge mounting base and water gauge to keep vertical state, this error that will increase the water gauge and observe. In addition, under the condition of dangerous beach torrent, a good working surface is difficult to have and the engineering standard of water gauge fixing can be completely guaranteed.

Disclosure of Invention

The utility model aims at exactly being directed against the problem that above-mentioned prior art exists, design a double-precision frequency conversion fluviograph based on automatic appearance of rectifying of water conservancy, realized two sets of different water level measurement of relative precision through the capacitance grid sensor (including fixed grid sensor and movable grid sensor), under single chip microcomputer control unit's coordination through motor and six gyroscopes, can realize the vertical gesture of automatic adjustment fluviograph for in the face of any complicated topography all need not worry the vertical state of water gauge, also need not to spend energy for adjusting its vertical state. The invention has simple structure, does not need artificial energy supply, is simple and convenient to operate, realizes multiple functions of autonomously correcting the posture and observing the water level and the flow velocity after installation, can save labor and improve the measurement efficiency.

The technical scheme of the utility model is realized like this: a double-precision variable frequency water level gauge based on hydraulic automatic posture correction comprises a floating ruler and a support pile, wherein a diversion tunnel penetrating through the floating ruler is reserved on the floating ruler, a hydraulic turbine motor is installed in the diversion tunnel, a circuit control assembly is installed in the floating ruler, a measuring cylinder is fixedly installed on the rear side of the floating ruler, and a floating plate capable of moving up and down is installed in the measuring cylinder; the supporting pile comprises a supporting pile I, a supporting pile II, a fixing module, a supporting beam and a floating plate support, the supporting pile I is coaxially installed in the supporting pile II, the fixing module is fixedly installed at the top end of the supporting pile I, a reserved hole is formed in the fixing module, the supporting beam can penetrate through the reserved hole, the position of the supporting beam is fixed by a fixing screw at the top end of the fixing module, the supporting beam is fixedly installed with a rotor of a motor I, the motor I is fixedly installed on the floating plate support, one end of the floating plate support is connected with a measuring cylinder through the motor II, and the other end of the floating plate support is connected with the measuring cylinder through an installed bearing. The inner wall of the measuring cylinder is provided with a fixed grid sensor II, a floating plate is internally provided with a movable grid sensor II, and the movable grid sensor II and the fixed grid sensor II are matched with each other to measure the position of the floating plate. The supporting pile II and the branchThe contact surface of the support pile I is made of self-lubricating materials, so that the support pile II and the support pile I can slide relatively, a fixed grid sensor I is installed in the wall of the support pile II, a movable grid sensor I is installed in the bottom of the support pile I, and the fixed grid sensor I and the movable grid sensor I are matched with each other to measure the relative displacement of the support pile II and the support pile I. The circuit control assembly comprises a single chip microcomputer control unit, a motor driving module, a six-axis gyroscope, A/D conversion and a wireless transmission module, the single chip microcomputer control unit is respectively connected with the motor driving module, the six-axis gyroscope, the A/D conversion and the wireless transmission module, the single chip microcomputer control unit is respectively connected with a moving grid sensor I, a fixed grid sensor I, a moving grid sensor II and a fixed grid sensor II through the A/D conversion and is connected with the six-axis gyroscope, and the single chip microcomputer control unit passes through the motor driving module, the motor I and the motor II. A battery is arranged in the support beam 4; the measuring frequency of the moving grid sensor I, the fixed grid sensor I, the moving grid sensor II and the fixed grid sensor II is positively correlated with the flow rate measured by the hydraulic turbine motor; the measurement data of the moving grid sensor I and the fixed grid sensor I are H₁The measurement data of the moving grid sensor II and the fixed grid sensor II are H₂If the water level data is H ═ H₁-H₂+ L, where L is the length of the support pile I.

The utility model discloses novel structure, reasonable, simple possesses following advantage:

(1) the vertical posture of the water level gauge can be automatically corrected. The requirement on the vertical posture of the water level gauge supporting structure is reduced, and the rapid and efficient fixing work of measuring personnel under complex terrains can be greatly facilitated.

(2) The water level data may facilitate later revision. Under the influence of the self-weight of the floating ruler, the data H measured by the capacitive grating sensor (including the fixed grating sensor and the movable grating sensor) positioned on the supporting pile₁The water level is relatively stable, the instantaneous fluctuation is small, and the measured water level change value has more reference value as long-span time series data; and data H measured by the capacitance grid sensor (including fixed grid sensor and movable grid sensor) positioned on the measuring cylinder and the floating plate of the floating ruler₂Is relatively sharp water level change, has larger fluctuation with the water level, and can be sharply caughtInstantaneous change of the water level in a short time before and after capturing the flood peak. In addition, the water level height can be measured by matching the two. And the later stage can be corrected by applying a related statistical algorithm according to the data fluctuation characteristic, so that data support is provided for realizing various hydrological measurement and calculation.

(3) And (5) carrying out frequency conversion measurement on water level data. The acquisition frequency of water level data is positive correlation with the velocity of flow, and when the flood comes, along with the velocity of flow increase, measuring frequency improves, can provide flood process data more accurately in time, provides timely sufficient data support for flood control and flood fighting. When the flood season is in the non-flood season, the lower measuring frequency is kept, and energy waste and data redundancy are avoided.

(4) The water flow supplies power automatically, and external artificial energy input is not needed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a double-precision frequency-conversion water level gauge based on hydraulic automatic posture correction;

FIG. 2 is a schematic axial view of the overall structure of a double-precision frequency-conversion water level gauge based on hydraulic automatic posture correction;

FIG. 3 is a schematic longitudinal section of the internal structure of a double-precision frequency conversion water level gauge based on hydraulic automatic posture correction;

FIG. 4 is a schematic longitudinal section of a partial structure of a support pile;

FIG. 5 is a schematic diagram of a horizontal section structure of a double-precision frequency-conversion water level gauge based on hydraulic automatic posture correction;

FIG. 6 is a schematic diagram of a sub-circuit control assembly;

description of part numbers in the figures:

1. a float ruler; 2. supporting piles; 3. a fixed module; 4. a support beam; 5. a water wheel motor; 6. a floating plate support; 7. a floating plate; 8. fixing screws; 9. a circuit control assembly; 10. a motor I; 11. a fixed grid sensor II; 12. supporting the pile I; 13. supporting piles II; 14. a moving gate sensor I; 15. a fixed grid sensor I; 16. a measuring cylinder; 17. a battery; 18. a motor II; 19. a moving grid sensor II; 20. a singlechip control unit; 21. a motor drive module; 22. a six-axis gyroscope; 23. A/D conversion; 24. and a wireless transmission module.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The technical scheme of the utility model is realized like this: a double-precision variable frequency water level gauge based on hydraulic automatic posture correction comprises a floating ruler 1 and a support pile 2, wherein a diversion tunnel penetrating through the floating ruler 1 is reserved on the floating ruler 1, a hydraulic turbine motor 5 is installed in the diversion tunnel, a circuit control assembly 9 is installed in the floating ruler 1, a measuring cylinder 16 is fixedly installed on the rear side of the floating ruler 1, and a floating plate 7 capable of moving up and down is installed in the measuring cylinder 16; the supporting pile 2 comprises a supporting pile I12, a supporting pile II 13, a fixing module 3, a supporting beam 4 and a floating plate support 6, the supporting pile I12 is coaxially installed in the supporting pile II 13, the fixing module 3 is fixedly installed at the top end of the supporting pile I12, a reserved hole is formed in the fixing module 3, the supporting beam 4 can penetrate through the reserved hole and is fixed in position by a fixing screw 8 at the top end of the fixing module 3, the supporting beam 4 is fixedly installed with a rotor of a motor I10, the motor I10 is fixedly installed on the floating plate support 6, one end of the floating plate support 6 is connected with a measuring cylinder 16 through a motor II 18, and the other end of the floating plate support is connected with the measuring cylinder 16 through an installed bearing. The inner wall of the measuring cylinder 16 is provided with a fixed grid sensor II 11, the floating plate 7 is internally provided with a movable grid sensor II 19, and the movable grid sensor II 19 and the fixed grid sensor II 11 are matched with each other to measure the position of the floating plate 7. The contact surfaces of the support pile II 13 and the support pile I12 are made of self-lubricating materials, the support pile II 13 and the support pile I12 can slide relatively, a fixed grid sensor I15 is installed in the wall of the support pile II 13, a movable grid sensor I14 is installed in the bottom of the support pile I12, and the fixed grid sensor I15 and the movable grid sensor I14 are matched with each other to measure the relative displacement of the support pile II 13 and the support pile I12. The circuit control assembly 9 comprises a single chip microcomputer control unit 20, a motor driving module 21, a six-axis gyroscope 22, an A/D conversion 23 and a wireless transmission module 24, the single chip microcomputer control unit 20 is respectively connected with the motor driving module 21, the six-axis gyroscope 22, the A/D conversion 23 and the wireless transmission module 24, the single chip microcomputer control unit 20 is respectively connected with a moving grid sensor I14, a fixed grid sensor I15, a moving grid sensor II 19 and a fixed grid sensor II 11 through the A/D conversion 23 and is connected with the six-axis gyroscope 22, and the single chip microcomputer control unit 20 is connected with the six-axis gyroscope 22 through the A/D conversion 23The motor drive module 21 is connected with the motor I10 and the motor II 18. A battery 17 is arranged in the support beam 4; the measuring frequency of the moving grid sensor I14, the fixed grid sensor I15, the moving grid sensor II 19 and the fixed grid sensor II 11 is positively correlated with the flow rate measured by the water turbine motor 5; the measurement data of the moving grid sensor I14 and the fixed grid sensor I15 are H₁The measurement data of the moving grid sensor II 19 and the fixed grid sensor II 11 are H₂If the water level data is H ═ H₁-H₂+ L, where L is the length of the support pile I12.

In practical use, the supporting pile 2 of the double-precision variable-frequency water level gauge based on hydraulic automatic posture correction provided by the embodiment can be hammered into the ground and fixed at a selected position without being calibrated vertically, the floating ruler 1 is installed on the supporting pile 2 by inserting the supporting beam 4 into the reserved hole of the fixing module 3, the supporting pile I12 is raised to a certain height from the supporting pile II 13 and fixed through the stopper, so that the floating ruler 1 is positioned above the water surface at the moment, the posture of the floating ruler is close to vertical and stable under the self-weight action of the floating ruler 1, and the fixing screw 8 is screwed to enable the supporting beam 4 not to generate relative displacement or rotation. At this time, the upper computer sends a starting instruction to the single chip microcomputer control unit 20 through the wireless transmission module 24, the single chip microcomputer control unit 20 receives and processes data of the six-axis gyroscope 22 through the a/D conversion 23, and the motor I10 and the motor II 18 are controlled to perform corresponding posture adjustment through calculating the inclination angle until the data measured by the six-axis gyroscope 22 meets the condition that the floating ruler 1 is in the vertical posture. The fixed state of the limiter is cancelled, so that the floating ruler 1 is immersed in water and suspended in the water body under the action of self buoyancy, wherein the water wheel motor 5 is pushed by water power to rotate, on one hand, the whole system is powered, redundant electric quantity is stored in the battery 17, on the other hand, the flow speed data can be transmitted back to the singlechip control unit 20 through the conversion of the A/D23 and is transmitted to an upper computer through the wireless transmission module 24. The float ruler 1 has a certain dead weight, can not sink and float with a large scale along with small waves, but can lift along with the lifting of the water level, when correspondingly occurring, the supporting pile I12 and the supporting pile II 13 can also generate relative displacement along with the small waves, and the movable grid sensor I14 and the fixed grid sensor I15 on the floating ruler can generate relative displacement data H ₁23 by A/D conversionThe water level is sent to the singlechip control unit 20, and simultaneously, the floating plate 7 in the measuring cylinder 16 changes along with the water level, relative to the supporting pile I12 and the supporting pile II 13, the floating plate 7 is more sensitive to the change of the water level, and the corresponding moving grid sensor II 19 and the fixed grid sensor II 11 enable the relative displacement data H₂Sending the H to the singlechip control unit 20 through A/D conversion 23, and finally sending the H through a wireless transmission module 24₁And H₂And transmitting to an upper computer. When the flow velocity measured by the hydro-generator 5 reaches different threshold values, the data H₁And H₂The measurement frequency is changed accordingly, the faster the flow rate, the higher the measurement frequency.

In addition, after the double-precision frequency conversion water level gauge based on hydraulic automatic posture correction is subjected to deviation caused by artificial or natural disturbance (including floater impact), the single chip microcomputer control unit 20 receives and processes data of the six-axis gyroscope 22 through the A/D conversion unit 23, and controls the motor I10 and the motor II 18 to perform corresponding posture adjustment through calculating an inclination angle until the data measured by the six-axis gyroscope 22 meets the condition that the floating ruler 1 is in a vertical posture.

Claims

1. The utility model provides a double-precision frequency conversion fluviograph based on automatic appearance of rectifying of water conservancy which characterized in that: a double-precision variable-frequency water level gauge based on hydraulic automatic posture correction comprises a floating ruler (1) and a supporting pile (2), wherein a diversion tunnel penetrating through the floating ruler (1) is reserved on the floating ruler (1), a water wheel motor (5) is installed in the diversion tunnel, a circuit control assembly (9) is installed in the floating ruler (1), a measuring cylinder (16) is fixedly installed on the rear side of the floating ruler (1), and a floating plate (7) capable of moving up and down is installed in the measuring cylinder (16); the supporting pile (2) comprises a supporting pile I (12), a supporting pile II (13), a fixing module (3), a supporting beam (4) and a floating plate support (6), the supporting pile I (12) is coaxially installed in the supporting pile II (13), the fixing module (3) is fixedly installed at the top end of the supporting pile I (12), a reserved hole is formed in the fixing module (3), the supporting beam (4) can penetrate through the reserved hole, the position of the supporting beam is fixed by a fixing screw (8) at the top end of the fixing module (3), the supporting beam (4) and a rotor of a motor I (10) are fixedly installed, the motor I (10) is fixedly installed on the floating plate support (6), one end of the floating plate support (6) is connected with a measuring cylinder (16) through a motor II (18), and the other side of the floating plate support is connected with the measuring cylinder (16) through an installed bearing.

2. The double-precision variable-frequency water level gauge based on hydraulic automatic posture correction as claimed in claim 1, characterized in that: the inner wall of the measuring cylinder (16) is provided with a fixed grid sensor II (11), the floating plate (7) is internally provided with a movable grid sensor II (19), and the movable grid sensor II (19) and the fixed grid sensor II (11) are mutually matched to determine the position of the floating plate (7).

3. The double-precision variable-frequency water level gauge based on hydraulic automatic posture correction as claimed in claim 1, characterized in that: the supporting pile is characterized in that the contact surfaces of the supporting pile II (13) and the supporting pile I (12) are made of self-lubricating materials, the supporting pile II (13) and the supporting pile I (12) can slide relatively, a fixed grid sensor I (15) is installed in the wall of the supporting pile II (13), a movable grid sensor I (14) is installed in the bottom of the supporting pile I (12), and the fixed grid sensor I (15) and the movable grid sensor I (14) are matched with each other to measure the relative displacement of the supporting pile II (13) and the supporting pile I (12).

4. The double-precision variable-frequency water level gauge based on hydraulic automatic posture correction as claimed in claim 1, characterized in that: the circuit control assembly (9) comprises a single chip microcomputer control unit (20), a motor driving module (21), a six-axis gyroscope (22), A/D conversion (23) and a wireless transmission module (24), the single chip microcomputer control unit (20) is respectively connected with the motor driving module (21), the six-axis gyroscope (22), the A/D conversion (23) and the wireless transmission module (24), the single chip microcomputer control unit (20) is respectively connected with the water wheel motor (5), the moving grid sensor I (14), the fixed grid sensor I (15), the moving grid sensor II (19) and the fixed grid sensor II (11) through the A/D conversion (23) and is connected with the six-axis gyroscope (22), and the single chip microcomputer control unit (20) is connected with the motor I (10) and the motor II (18) through the motor driving module (21).

5. The double-precision variable-frequency water level gauge based on hydraulic automatic posture correction as claimed in claim 1, characterized in that: a battery (17) is mounted in the support beam (4).

6. The double-precision variable-frequency water level gauge based on hydraulic automatic posture correction as claimed in claim 1, characterized in that: the measuring frequency of the moving grid sensor I (14), the fixed grid sensor I (15), the moving grid sensor II (19) and the fixed grid sensor II (11) is in positive correlation with the flow rate measured by the hydraulic turbine motor (5); the measurement data of the moving grid sensor I (14) and the fixed grid sensor I (15) are H₁The measurement data of the moving grid sensor II (19) and the fixed grid sensor II (11) are H₂If the water level data is H ═ H₁-H₂+ L, where L is the length of the support pile I (12).