CN110057345B - Contact type static level, relative sedimentation monitoring system and method thereof - Google Patents
Contact type static level, relative sedimentation monitoring system and method thereof Download PDFInfo
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- CN110057345B CN110057345B CN201910425049.4A CN201910425049A CN110057345B CN 110057345 B CN110057345 B CN 110057345B CN 201910425049 A CN201910425049 A CN 201910425049A CN 110057345 B CN110057345 B CN 110057345B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
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Abstract
The application discloses a contact type static level, a relative sedimentation monitoring system and a method thereof; the contact type static level comprises a stay wire displacement sensor, a data acquisition module, a piston block, a Huke elastic piece and a cylinder body, wherein the stay wire displacement sensor is used for measuring the distance from the piston block to the stay wire displacement sensor, and two ends of the Huke elastic piece are connected with the piston block and the bottom wall of the inner cavity; the relative settlement monitoring system comprises a liquid storage container, a contact type static level, a data collecting device and a data processing center, wherein the liquid storage container is connected with the contact type static level to form a communicating vessel; the method is that the relative settlement between monitoring points is calculated by the readings of the stay wire displacement sensors before and after settlement of the detection points and the liquid level difference between the front and the back of the settlement relative to the liquid storage container. The application converts the settlement of the monitoring point into the elastic deformation of the Huke-type elastic piece, and the deformation amount of the Huke-type elastic piece calculates the settlement amount, so that the larger range can be realized while the high precision of the energy level instrument is ensured.
Description
Technical Field
The application belongs to the technical field of engineering detection, and particularly relates to a contact type static level, a relative settlement monitoring system and a method thereof.
Background
The static level is a liquid level measuring instrument used for monitoring the relative settlement of multiple points, namely the change of the vertical displacement of each measuring point relative to a reference point, so as to accurately calculate the relative settlement of each measuring point. Applications include measurement of differential settlement at various points of large buildings, such as hydropower plants, dams, high-rise buildings, nuclear power plants, hydraulic hub engineering, railways, subways, high-speed rails, and the like.
The existing capacitance-type, inductance-type and photoelectric-type static leveling instrument measures the settlement of a measuring point through the travel of a floater floating on the liquid surface in the vertical direction, so that the measuring range of the static leveling instrument is smaller, generally not more than 50mm, and the installation requirement is high, and the liquid surface in the sensor is required to be parallel to the installation surface at the bottom of the sensor after the installation.
The existing differential pressure type static leveling instrument mainly measures the pressure change of a sensor by adopting a diffusion silicon core body to calculate the lifting change of each measuring point relative to a horizontal base point. The highest precision of the diffused silicon is only 0.1% FS, and the differential pressure type static level sensor under most measuring ranges can not meet the requirement of high precision.
Therefore, a new technology is needed to solve the problems of high installation requirement, low measuring range and low precision of the static level in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a contact type static level, a relative settlement monitoring system and a method thereof, which are convenient to install, large in measuring range and high in measuring precision.
The application adopts the following technical scheme:
the contact type hydrostatic level comprises a stay wire displacement sensor, a data acquisition module, a piston block, a Huke elastic piece and a cylinder body with an inner cavity;
the piston block is arranged in the inner cavity and can slide in a fitting manner relative to the side wall of the inner cavity; the Hooke's elastic piece is positioned below the piston block, and two ends of the Hooke's elastic piece are fixedly connected with the piston block and the bottom wall of the inner cavity respectively;
the stay wire displacement sensor and the data acquisition module are arranged on the upper side of the inner cavity, the stay wire displacement sensor is used for measuring the distance from the piston block to the stay wire displacement sensor, and the stay wire displacement sensor is electrically connected with the data acquisition module;
the side wall of the cylinder body is provided with an air vent and a liquid through hole, the air vent is arranged above the liquid through hole, and the piston block is arranged between the air vent and the liquid through hole in a sliding mode.
Further as an improvement of the technical proposal of the application, the inner cavity is divided into an upper electric cavity and a lower liquid flow cavity by a transverse partition plate; the stay wire displacement sensor and the data acquisition module are arranged in the electric cavity, and the transverse partition plate is provided with a wire passing hole corresponding to the stay wire displacement sensor; the piston block and the hooke-type elastic piece are arranged in the liquid flow cavity.
Further as an improvement of the technical scheme of the application, a temperature sensor is also arranged in the piston block, and the temperature sensor is electrically connected with the data acquisition module.
The relative settlement monitoring system is based on the contact type static leveling instrument and comprises a liquid storage container, a data collecting device, a data processing center and more than two contact type static leveling instruments;
the contact type static leveling instrument is respectively arranged at a preset monitoring point, a liquid through port of the contact type static leveling instrument is connected with the liquid storage container through a liquid through pipe to form a communicating vessel, a vent port of the contact type static leveling instrument is connected with the liquid storage container through a vent pipe, and the contact type static leveling instrument is electrically connected with the data collecting device;
the data collection device is in communication connection with the data processing center and is used for transmitting measurement data of each data acquisition module to the data processing center;
the data processing center is used for calculating the relative settlement of each monitoring point according to the measurement data of each contact type hydrostatic level acquired by the data collecting device.
Further as an improvement of the technical scheme of the application, the data collection device further comprises a wireless communication module, and the data collection device is in communication connection with the data processing center through the wireless communication module.
Further as an improvement of the technical scheme of the application, the data processing center is a cloud server.
A method of monitoring relative sedimentation comprising the steps of:
s1, installing each contact type static level at a corresponding monitoring point and connecting the relative settlement monitoring systems; before sedimentation, respectively calculating the liquid level difference before sedimentation of each contact type static level relative to the liquid storage container according to the data acquired by the contact type static level corresponding to each monitoring point;
s2, after sedimentation, respectively calculating the liquid level difference of each contact type static level relative to the liquid storage container according to the data acquired by the contact type static level corresponding to each monitoring point;
s3, calculating the settlement quantity of each monitoring point relative to the liquid storage container according to the liquid level difference before settlement and the liquid level difference after settlement of each monitoring point;
s4, selecting one monitoring point as a datum point, and respectively calculating the relative settlement amounts of other monitoring points and the datum point according to the settlement amount of the datum point relative to the liquid storage container and the settlement amount of other monitoring points relative to the liquid storage container.
Further as an improvement of the technical scheme of the application, in the S1 and the S2, the liquid level difference before sedimentation and the liquid level difference after sedimentation are calculated by the following formulas:
when x is>a 0 In the time-course of which the first and second contact surfaces,
when x is less than or equal to a 0 In the time-course of which the first and second contact surfaces,
wherein h is the liquid level difference between the contact type static level gauge and the liquid storage container, G is the gravity of the piston block, T is the pulling force of the stay wire displacement sensor, and S is the cross-sectional area of the inner cavity; a is the reading of the stay wire displacement sensor when the hooke-type elastic piece is not deformed; a, a 0 Reading the stay wire displacement sensor when no communication liquid exists in the inner cavity; k is the elastic coefficient of the hooke-type elastic piece; ρ is the density of the fluid in the communicating vessel, and x is the reading of the pull-wire displacement sensor during measurement.
Further as an improvement of the technical scheme of the application, in the step S3, the settlement of the monitoring point relative to the liquid storage container is calculated by the following formula:
Δh＝h 1 -h 0
wherein Δh is the settlement of the monitoring point relative to the liquid storage container; the h is 0 The liquid level difference between the contact type hydrostatic level corresponding to the monitoring point before settlement and the liquid storage container; the h is 1 And the liquid level difference between the contact type hydrostatic level corresponding to the monitoring point and the liquid storage container after settlement.
Further as an improvement of the technical scheme of the application, in the step S4, the relative settlement between other monitoring points and the datum point is calculated by the following formula:
ΔH＝Δh X -Δh 0
in the formula, deltah 0 A settling amount of the reference point relative to the reservoir; Δh X And delta H is the settlement of other monitoring points relative to the datum point.
Compared with the prior art, the application has the beneficial effects that:
the application has convenient installation, uses the piston block to replace the traditional float to measure the sedimentation of the liquid level, and does not need to level the liquid level in the container; the application has larger measuring range and higher precision, converts the settlement of the monitoring point into the elastic deformation of the Huke-type elastic piece, uses the stay wire displacement sensor to measure the deformation quantity of the Huke-type elastic piece, ensures the high precision of the energy level and can realize larger measuring range.
Drawings
The technology of the present application will be described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic view of the internal structure of a contact hydrostatic level of the present application;
fig. 2 is a schematic diagram of a relative sedimentation monitoring system of the present application.
Reference numerals:
1-contact static level; 11-a pull wire displacement sensor; 12-a cylinder; 121-lumen; 1211-an electrical cavity; 1212-a flow lumen; 122-a liquid port; 123-vent; 124-separator; 125-electrical interface; 13-piston blocks; 14-hooke-type elastic members; 2-a liquid storage container; 3-data collection means; 4-a data processing center; a 5-wireless communication module; 6, a liquid passing pipe; 7-a vent pipe; 8-data lines.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present application are merely with respect to the mutual positional relationship of the constituent elements of the present application in the drawings.
Referring to fig. 1, the present application provides a contact static level 1 comprising a pull-wire displacement sensor 11, a data acquisition module (not shown), a piston block 13, a hooke's spring 14 and a barrel 12 provided with an internal cavity 121.
Wherein the interior cavity 121 is divided by a transverse partition 124 into an upper electrical cavity 1211 and a lower fluid cavity 1212. The cylinder 12 is provided with a liquid port 122 and a vent port 123 which are communicated with the inner cavity 121, the liquid port 122 is arranged at the lower side of the liquid flow cavity 1212, the vent port 123 is arranged at the upper side of the liquid flow cavity 1212, and the piston block 13 is arranged between the liquid port 122 and the vent port 123 in a sliding manner.
The piston block 13, hooke's spring 14 is mounted in the flow chamber 1212. The piston block 13 can be attached and slid relative to the side wall of the inner cavity 121; the hooke-shaped elastic piece 14 is located below the piston block 13, and two ends of the hooke-shaped elastic piece 14 are fixedly connected with the piston block 13 and the bottom wall of the inner cavity 121 respectively. The cylinder 12 is also provided with an electrical interface 125 corresponding to the electrical cavity 1211, and a power supply line and a data line are communicated with the outside. The hooke-shaped elastic member 14 is a precise linear spring.
When the device is used, the cylinder 12 is arranged at a monitoring point, the liquid through hole 122 of the cylinder 12 is connected with an external container to form a communicating vessel, and at the moment, the gravity of the piston block 13, the acting force of the Huke-type elastic piece 14 and the hydraulic pressure form balance;
when the monitoring point subsides to achieve new balance, the hydraulic pressure difference between the cylinder 12 and the external container is changed, the hydraulic pressure is changed, the length and acting force of the hooke-shaped elastic piece 14 are also changed, the acting force of the hooke-shaped elastic piece 14 can be calculated according to hooke's law, and then the subsidence amount is calculated.
Therefore, in order to measure the amount of change in the length of the hooke's elastic member 14, the pull-wire displacement sensor 11 is provided, and the pull-wire displacement sensor 11 may be a high-precision pull-wire displacement sensor in particular, so as to achieve higher measurement accuracy. The stay wire displacement sensor 11 and the data acquisition module are arranged on the upper side of the inner cavity 121, namely in the electric cavity 1211; the transverse partition 124 is provided with a wire passing hole corresponding to the wire pulling displacement sensor 11. The stay wire displacement sensor 11 is used for measuring the distance from the piston block 13 to the stay wire displacement sensor 11, and the stay wire displacement sensor 11 is electrically connected with the data acquisition module. The data acquisition module may store measurement data, i.e. readings, of the pullwire displacement sensor 11 before and after sedimentation. The data acquisition module comprises a microcontroller and a memory, wherein the memory is electrically connected with the microcontroller, and the microcontroller is electrically connected with the stay wire displacement sensor 11.
When the monitoring point is settled to change the length of the hooke-shaped elastic piece 14, the distance from the piston block 13 to the stay wire displacement sensor 11 is also changed, the reading through the stay wire displacement sensor 11 is also changed, the reading change quantity is the deformation quantity of the hooke-shaped elastic piece 14, and the calculation is performed through hooke's law.
As a preferred embodiment, a temperature sensor (not shown) is also provided in the piston block 13, which is electrically connected to the data acquisition module. The temperature sensor measures the temperature change, and the deviation caused by the temperature is eliminated when the settlement amount is calculated.
Based on the structure of the contact type static level 1, the settlement of the monitoring point is converted into the elastic deformation of the Huke-type elastic piece 14, and the stay wire displacement sensor 11 is used for measuring the deformation of the Huke-type elastic piece 14, so that the high precision is ensured, and meanwhile, a larger range can be realized; the piston block 13 is used for replacing the traditional float to measure the sedimentation of the liquid level, so that the liquid level in the cylinder 12 does not need to be leveled, and the installation is more convenient; the piston block 13 is supported by the hooke-type elastic piece 14, so that the reading of the stay wire displacement sensor 11 is more stable, the cylinder body 12 on each measuring point is not required to be arranged near the same horizontal line during installation, points can be distributed in a measuring range, and the installation requirement is lower; and compensation is carried out for the corresponding temperature during each reading, so that the high precision of measurement is ensured.
The application also provides a relative sedimentation monitoring system, referring to fig. 1 and 2, based on the contact type static leveling instrument 1, the system comprises a liquid storage container 2, a data collecting device 3, a data processing center 4 and more than two contact type static leveling instruments 1, wherein the data processing center 4 can be a local server or a cloud server, and the cloud server is selected as a preferential choice.
The contact type static leveling instrument 1 is respectively installed at a preset monitoring point, a liquid through hole 122 of the contact type static leveling instrument 1 is connected with the liquid storage container 2 through a liquid through pipe 6 to form a communicating vessel, a vent hole 123 of the contact type static leveling instrument 1 is connected with the liquid storage container 2 through a vent pipe 7, and the contact type static leveling instrument 1 is electrically connected with the data collecting device 3 through a data line 8.
The data collection device 3 is in communication connection with the data processing center 4, and the data collection device 3 is used for transmitting measurement data of each data acquisition module to the data processing center 4. The data collection device 3 can store the measurement data of the stay wire displacement sensor 11 recorded by the data acquisition module in each contact hydrostatic level 1, and then send the collected measurement data to the data processing center 4.
The data collection device 3 is a high-speed data acquisition device based on an RS485 bus, the RS485 bus is an industrial-grade bus system, the system is often applied to an industrial site for acquiring multi-point data, the RS485 bus is generally used, a communication mode with one main band and multiple slaves is used, the mode is convenient to wire, only two shielding cables are needed, the communication distance can be supported for 1500m at the maximum, the communication distance can be prolonged by adding a repeater, and the electromagnetic interference resistance is good by adopting a differential signal mode. The data of all the subunits are collected in a master-slave question-answering mode, namely, a master unit accesses all the subunits in sequence, which unit is accessed and which unit uploads the data, the use right of the bus is completely distributed by the master unit, and all the subunits cannot unauthorized the bus. Therefore, the data collection device 3 can sequentially access the data collection modules corresponding to the monitoring points so as to collect the data of the data collection modules. This technique is a technique commonly used in the art and will not be described in detail herein.
In this embodiment, the relative sedimentation monitoring system further includes a wireless communication module 5, and the data collecting device 3 is communicatively connected with the data processing center 4 through the wireless communication module 5. The wireless communication module 5 comprises a WiFi module or a GPRS module.
The data processing center 4 is used for calculating the relative settlement of each monitoring point by using the measurement data of each contact static level 1 collected by the data collecting device 3.
Firstly, calculating the liquid level difference before sedimentation of the contact type static level 1 arranged on a monitoring point relative to a liquid storage container 2, and then calculating the liquid level difference after sedimentation; subtracting the liquid level difference after sedimentation from the liquid level difference before sedimentation to obtain the sedimentation quantity of the monitoring point relative to the liquid storage container 2; and selecting one monitoring point as a datum point, and subtracting the settlement of the other monitoring points relative to the liquid storage container 2 from the settlement of the datum point relative to the liquid storage container 2 to obtain the settlement of the other monitoring points relative to the datum point.
The application also provides a relative sedimentation monitoring method based on the relative sedimentation monitoring system, which comprises the following steps:
s1, installing each contact type static level 1 at a corresponding monitoring point, wherein the cylinder 12 of each measuring point is required to be installed in the range of the cylinder 12, and the relative settlement monitoring system is connected.
Setting the liquid level difference between the contact type static level gauge 1 and the liquid storage container 2 as h, the gravity of the piston block 13 as G, the tension of the pull-wire displacement sensor as T, and the cross section area of the inner cavity 121 as S; the reading of the stay wire displacement sensor 11 is a when the hooke-type elastic piece 14 is not deformed; the elastic coefficient of the hooke-type elastic piece 14 is k; the density of the communicating liquid in the communicating vessel is ρ, and the reading of the pull-wire displacement sensor 11 at the time of measurement is x.
When the piston block 13 is stable, it can be seen that the hydraulic pressure difference acting force applied to the piston block 13 is:
N＝Sρgh (1)
from hooke's law, the force of hooke's elastic member 14 on piston block 13 is known as:
F＝|a-x|k (2)
when the inner cavity 121 is not communicated with liquid and the piston block 13 is in a balanced state, the reading of the stay wire displacement sensor 11 is a 0 。
Then when the wire is displaced the sensor 11 is reading x>a 0 When the hooke-shaped elastic piece 14 is pressed, the piston block 13 in the inner cavity 121 is in a balanced state, and the following steps are included:
G＝F+N+T (3)
when x is less than or equal to a, the reading of the stay wire displacement sensor 11 is less than or equal to a 0 When the hooke's elastic member 14 is pulled, the piston block 13 in the inner cavity 121 is in a balanced state:
N+T＝F+G (4)
from the four formulas (1), (2), (3) and (4), it can be seen that when x>a 0 During the time, the liquid level difference of the contact type hydrostatic level 1 and the liquid storage container 2 of the monitoring point is:
when x is less than or equal to a 0 During the time, the liquid level difference of the contact type hydrostatic level 1 and the liquid storage container 2 of the monitoring point is:
therefore, before settlement, according to the magnitude of the reading x of the contact hydrostatic level 1 corresponding to each monitoring point, the formula (5) or (6) is selected to calculate the liquid level difference before settlement of each monitoring point relative to the liquid storage container 2.
For example, assuming that there are A, B, C three monitoring points, the difference of the liquid level before settlement of the three monitoring points relative to the liquid level before settlement of the liquid storage container 2 is calculated by the readings of the contact static level 1 corresponding to the three monitoring points before settlement, and is h A0 、h B0 And h C0 。
S2, after sedimentation occurs, respectively calculating the liquid level difference of each contact type static level meter 1 relative to the liquid storage container 2 through a liquid level difference calculation formula according to the data acquired by the contact type static level meter 1 corresponding to each monitoring point.
For example, the difference between the liquid level after settlement of the three monitoring points A, B, C and the liquid level after settlement of the liquid storage container 2 is calculated to be h by the formula (5) or (6) A1 、h B1 And h C1 。
S3, calculating the difference between the liquid level differences of the monitoring points relative to the liquid storage container 2 before settlement of the monitoring points, and then calculating the settlement of the monitoring points relative to the liquid storage container 2, wherein the settlement calculation formula is as follows:
Δh＝h 1 -h 0 (7)
wherein Δh is the settlement of the monitoring point relative to the liquid storage container 2; the h is 0 The liquid level difference between the contact type hydrostatic level 1 corresponding to the monitoring point before settlement and the liquid storage container 2; the h is 1 And the liquid level difference between the contact type hydrostatic level 1 corresponding to the monitoring point after settlement and the liquid storage container 2 is obtained.
For monitoring point A, the settlement amount relative to the reservoir 2 is Δh according to equation (7) A ＝h A1 -h A0 The method comprises the steps of carrying out a first treatment on the surface of the The settlement amount of the monitoring points B and C relative to the liquid storage container 2 is calculated by the same method to obtain delta h B ＝h B1 -h B0 And Δh C ＝h C1 -h C0 。
S4, the calculated value is the settlement of the monitoring points relative to the liquid storage container 2, and then the relative settlement between the monitoring points is calculated. Selecting one monitoring point as a datum point, subtracting the settlement of other monitoring points relative to the liquid storage container 2 from the settlement of the datum point relative to the liquid storage container 2, and obtaining the relative settlement of other monitoring points relative to the datum point, namely:
ΔH＝Δh X -Δh 0 (8)
wherein Δh 0 A sedimentation amount of the reference point with respect to the liquid storage container 2; Δh X For the settlement amount of the other monitoring point with respect to the reservoir 2, Δh is the settlement amount of the other monitoring point with respect to the reference point.
For example, using the above-mentioned monitoring point a as a reference point, according to the formula (8), the settlement amount of the monitoring point B with respect to the monitoring point a is Δh BA ＝Δh B -Δh A The settlement amount of the monitoring point c relative to the monitoring point A is delta H CA ＝Δh C -Δh A 。
The relative sedimentation quantity of each monitoring point relative to the datum point is calculated through the four steps, and when the value of the relative sedimentation quantity of the monitoring point is larger than 0, the monitoring point is sunken relative to the datum point; when the value of the relative settlement amount is less than 0, the monitoring point rises relative to the reference.
Other contents of the contact static level, relative settlement monitoring system and method of the present application are referred to in the prior art, and are not described herein.
The present application is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present application are within the scope of the technical proposal of the present application.
Claims (7)
1. Contact hydrostatic level, its characterized in that: comprises a stay wire displacement sensor, a data acquisition module, a piston block, a Huke-type elastic piece and a cylinder body with an inner cavity;
the piston block is arranged in the inner cavity and can slide in a fitting manner relative to the side wall of the inner cavity; the Hooke's elastic piece is positioned below the piston block, and two ends of the Hooke's elastic piece are fixedly connected with the piston block and the bottom wall of the inner cavity respectively;
the stay wire displacement sensor and the data acquisition module are arranged on the upper side of the inner cavity, the detection end of the stay wire displacement sensor is fixedly connected with the piston block, and the stay wire displacement sensor is electrically connected with the data acquisition module;
the side wall of the cylinder body is provided with an air vent and a liquid through hole, the air vent is arranged above the liquid through hole, and the piston block is arranged between the air vent and the liquid through hole in a sliding manner;
the inner cavity is divided into an upper electric cavity and a lower liquid cavity by a transverse partition plate; the stay wire displacement sensor and the data acquisition module are arranged in the electric cavity, and the transverse partition plate is provided with a wire passing hole corresponding to the stay wire displacement sensor; the piston block and the hooke-type elastic piece are arranged in the liquid flow cavity;
and a temperature sensor is further arranged in the piston block, and the temperature sensor is electrically connected with the data acquisition module.
2. The relative settlement monitoring system based on the contact static level of claim 1, characterized in that: the contact type static leveling instrument comprises a liquid storage container, a data collecting device, a data processing center and more than two contact type static leveling instruments;
the contact type static leveling instrument is respectively arranged at a preset monitoring point, a liquid through port of the contact type static leveling instrument is connected with the liquid storage container through a liquid through pipe to form a communicating vessel, a vent port of the contact type static leveling instrument is connected with the liquid storage container through a vent pipe, and the contact type static leveling instrument is electrically connected with the data collecting device;
the data collection device is in communication connection with the data processing center and is used for transmitting measurement data of each data acquisition module to the data processing center;
the data processing center is used for calculating the relative settlement of each monitoring point according to the measurement data of each contact type hydrostatic level acquired by the data collecting device.
3. The relative sedimentation monitoring system of claim 2, wherein: the data collection device is in communication connection with the data processing center through the wireless communication module.
4. The relative sedimentation monitoring system of claim 2, wherein: the data processing center is a cloud server.
5. A relative sedimentation monitoring method, characterized by applying a relative sedimentation monitoring system as claimed in any one of the preceding claims 2 to 4, comprising the steps of:
s1, installing each contact type static level at a corresponding monitoring point and connecting the relative settlement monitoring systems; before sedimentation, respectively calculating the liquid level difference before sedimentation of each contact type static level relative to the liquid storage container according to the data acquired by the contact type static level corresponding to each monitoring point;
s2, after sedimentation, respectively calculating the liquid level difference of each contact type static level relative to the liquid storage container according to the data acquired by the contact type static level corresponding to each monitoring point;
s3, calculating the settlement quantity of each monitoring point relative to the liquid storage container according to the liquid level difference before settlement and the liquid level difference after settlement of each monitoring point;
s4, selecting one monitoring point as a datum point, and respectively calculating the relative settlement amounts of other monitoring points and the datum point according to the settlement amount of the datum point relative to the liquid storage container and the settlement amount of other monitoring points relative to the liquid storage container;
in the S1 and the S2, the liquid level difference before sedimentation and the liquid level difference after sedimentation are calculated by the following formulas:
when x is>a 0 In the time-course of which the first and second contact surfaces,
when x is less than or equal to a 0 In the time-course of which the first and second contact surfaces,
wherein h is the liquid level difference between the contact type static level gauge and the liquid storage container, G is the gravity of the piston block, T is the pulling force of the stay wire displacement sensor, and S is the cross-sectional area of the inner cavity; a is the reading of the stay wire displacement sensor when the hooke-type elastic piece is not deformed; a, a 0 Reading the stay wire displacement sensor when no communication liquid exists in the inner cavity; k is the elastic coefficient of the hooke-type elastic piece; ρ is the density of the communicating fluid in the communicating vessel, x is the reading of the stay wire displacement sensor during measurement; g is gravitational acceleration.
6. The method of claim 5, wherein the settlement amount of the monitoring point with respect to the liquid storage container is calculated in S3 by the following formula:
Δh＝h 1 -h 0
wherein Δh is the settlement of the monitoring point relative to the liquid storage container; the h is 0 The liquid level difference between the contact type hydrostatic level corresponding to the monitoring point before settlement and the liquid storage container; the h is 1 And the liquid level difference between the contact type hydrostatic level corresponding to the monitoring point and the liquid storage container after settlement.
7. The relative sedimentation monitoring method according to claim 5, wherein the relative sedimentation amount of the other monitoring points and the reference point is calculated in S4 by the following formula:
ΔH＝Δh X -Δh 0
in the formula, deltah 0 A settling amount of the reference point relative to the reservoir; Δh X For the settlement of other monitoring points relative to the liquid storage container, delta H isHe monitors the amount of settlement of a point relative to the datum point.
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| CN112850494B (en) * | 2020-12-31 | 2021-11-26 | 武汉楚天浩瑞科技发展有限公司 | Steel form for construction with self-adaptation mechanism |
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