CN112781548A - Online real-time settlement observation equipment and method - Google Patents
Online real-time settlement observation equipment and method Download PDFInfo
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- CN112781548A CN112781548A CN202110184370.5A CN202110184370A CN112781548A CN 112781548 A CN112781548 A CN 112781548A CN 202110184370 A CN202110184370 A CN 202110184370A CN 112781548 A CN112781548 A CN 112781548A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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Abstract
The invention discloses online real-time settlement observation equipment which comprises a benchmark device, an observer, an indicator, a communicating pipe and a collector, wherein the benchmark device is arranged at a benchmark point; the observer is arranged at the observation point; the indicator is respectively communicated with the reference device and the observer through a communicating pipe and is provided with an indicating pipe; the collector is arranged on one side of the indicator, and is used for identifying and monitoring image data in real time, so that the manual work is not needed, and the automatic observation is realized. The online real-time settlement observation equipment utilizes the inner diameter difference of the reference device, the collector and the indicator to amplify settlement information and utilizes bubble movement to collect information, thereby achieving the purpose of testing micro settlement and realizing high precision of settlement measurement; and a high-precision sensor is not needed, so that the cost is greatly reduced. The invention also discloses an online real-time settlement observation method, which monitors settlement data in real time according to the relation between the bubble moving distance and the settlement value and ensures the timeliness of the detection result by establishing a prediction model.
Description
Technical Field
The invention relates to the technical field of settlement observation, in particular to online real-time settlement observation equipment and method.
Background
Settlement observation is to observe observation points according to fixed measurement points, namely datum points, measure the settlement degree of the observation points and express the settlement degree by data, and is mostly applied to settlement tests of buildings, structures, stratums and the like.
The existing settlement observation method utilizes a level gauge, a total station, a hydrostatic level gauge and the like to acquire data. The leveling instrument and the total station need manual operation, the efficiency is low, and automatic observation cannot be carried out; the static level gauge relates to a precise sensor, has high cost (the single cost is thousands of elements and varies), and has poor economy for multi-point large-range testing; and the precision of the methods is in the millimeter or 0.1 millimeter level, so that higher-precision observation cannot be realized.
Aiming at the problems, the device and the method are designed to solve the problems of high cost, poor economy in large-scale use and low precision caused by the fact that a precision sensor is involved in detection equipment in the prior art.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides an online real-time settlement observation device and method, so as to solve the problems of high cost, poor economy in large-scale use, and low precision caused by the fact that the detection apparatus relates to a precision sensor in the prior art.
The invention provides an online real-time settlement observation device, which comprises:
the benchmark device is arranged at the benchmark point and is provided with a benchmark containing cavity;
the observer is arranged at the observation point and is provided with an observation cavity;
the indicator is respectively communicated with the reference device and the observer through a communicating pipe and is provided with an indicating pipe, one end of the indicating pipe is communicated with the reference device, the other end of the indicating pipe is communicated with the observer, the cross sectional area of the indicating pipe is respectively smaller than that of the reference accommodating cavity and that of the observation accommodating cavity, the reference accommodating cavity, the observation accommodating cavity, the communicating pipe and the indicating pipe form a communicating cavity, and flowing liquid is arranged in the communicating cavity;
and the collector is arranged on one side of the indicator and is used for collecting the image information of the indicator.
Preferably, the indicator comprises:
the indicating panel is connected with the indicating pipe and is provided with indicating numbers;
and the moving piece is connected with the indicating pipe and the indicating panel respectively, and the moving piece takes the thrust of the movement of the liquid as a driving force and is used for displaying the movement amount of the liquid.
Preferably, the indication tube is bent and disposed on the indication panel.
Preferably, the height of the liquid level in the indicator tube is respectively smaller than the height of the liquid level in the reference cavity and the height of the liquid level in the observation cavity, and one end of the indicator tube, which is communicated with the observer, is higher than the other end of the indicator tube.
Preferably, the reference device, the observer and the indicating tubes are respectively provided with a plurality of indicating tubes which are in one-to-one correspondence, and the indicating tubes are arranged on the indicating panel.
Preferably, the moving member is a bubble valve, and the bubble valve is a check valve.
Preferably, the liquid is a coloured liquid.
The invention also provides an online real-time settlement observation method, which comprises the following specific steps:
Preferably, the step 2 specifically comprises the following steps:
step 2.1, performing orthogonal experiments according to the reference point water tank inner diameter R1, the observation point water tank inner diameter R2, the scale plate pipeline inner diameter R, the scale plate pipeline length s, the temperature T and the settlement h to obtain the relation between the moving distance and the time of the bubbles in the scale plate pipeline generated in the settlement measurement process;
step 2.2, obtaining a relation curve of the moving distance L of the bubbles and the time t, and fitting a trend function L (f) (t) to obtain a prediction model;
and 2.3, observing and obtaining the bubble positions at multiple moments, predicting the final stable position of the bubble, namely the position of an asymptote according to the prediction model, and obtaining the moving distance L of the bubble.
Preferably, the step 2.3 includes the following specific steps:
step 2.3.1, observing and obtaining a coordinate value (t) of the moving distance L and the time t of the bubble close to the trend function according to the trend function L ═ f (t)1,L1)、(t2,L2)；
And 2.3.2, substituting the coordinate value-taking result into L ═ f (t), determining a parameter to be determined, and further obtaining the position of an asymptote.
According to the scheme, the online real-time settlement observation equipment provided by the invention has the advantages that the settlement information is amplified by utilizing the inner diameter difference of the reference device, the collector and the indicator, the information is collected by utilizing the movement of bubbles, the structure is simple, and micron-level high-precision testing is realized; the settlement data is observed through the mutually communicated reference device, observer and indicator, a high-precision sensor is not needed, and the cost is greatly reduced; and automatic real-time observation can be realized by combining a remote image recognition technology and an algorithm. The invention also provides an online real-time settlement observation method, which firstly determines the inner diameter R of the datum point water tank by utilizing the principle of the communicating vessel1Inner diameter R of water tank at observation point2And the inner diameter r of the pipeline of the scale plate, and then the settlement height is calculated according to the moving distance L of the bubblesAnd h, finally achieving the purpose of settlement observation, and meanwhile, effectively guaranteeing the timeliness of the detection result by establishing a prediction model to predict the final bubble stable position. The invention solves the problems of high cost, poor economy in large-scale use and low precision caused by the fact that the detection instrument relates to a precision sensor in the prior art, has obvious effect and is suitable for wide popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an online real-time settlement observation device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an indicating panel of the online real-time settlement observation device shown in FIG. 1;
fig. 3 is a first process block diagram of an online real-time settlement observation method according to an embodiment of the present invention;
fig. 4 is a process block diagram ii of an online real-time settlement observation method according to an embodiment of the present invention;
fig. 5 is a graph illustrating a trend function of the online real-time sedimentation observation method shown in fig. 3.
In the figure:
1. a reference device; 2. an observer; 3. an indicator; 4. a collector; 5. a communicating pipe; 6. a liquid; 11. a reference cavity; 21. observing the cavity; 31. an indicator tube; 32. an indication panel; 33. a moving member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 5, an embodiment of an online real-time settlement observation device according to the present invention will be described. The online real-time settlement observation equipment comprises a benchmark 1, an observer 2, an indicator 3 and a collector 4, wherein the benchmark 1 is arranged at a benchmark point and is provided with a benchmark cavity 11; the observer 2 is arranged at an observation point and is provided with an observation cavity 21; the indicator 3 is respectively communicated with the reference device 1 and the observer 2 through a communicating pipe 5 and is provided with an indicating pipe 31, one end of the indicating pipe 31 is communicated with the reference device 1, the other end of the indicating pipe 31 is communicated with the observer 2, the cross-sectional area of the indicating pipe 31 is respectively smaller than that of the reference accommodating cavity 11 and that of the observation accommodating cavity 21, the reference accommodating cavity 11, the observation accommodating cavity 21, the communicating pipe 5 and the indicating pipe 31 form a communicating cavity, and flowing liquid 6 is arranged in the communicating cavity; the collector 4 is disposed on one side of the indicator 3 and is configured to collect image information of the indicator 3.
By utilizing the principle that the liquid level in the communicating vessel is the same, the reference point is arranged at the position of a fixed stationary point, the observation point is arranged at the test position, the reference vessel 1 and the observer 2 can be water tanks marked with scales, a certain amount of flowing liquid 6 is placed in the water tanks in advance, the communicating tube 5 can be a hose, the indicator 3 can be a scale plate and used for acquiring the moving distance of bubbles, the indicating tube 31 can be a hose or a glass tube, and the collector 4 can be a camera. The reference device 1 and the observer 2 are communicated with the indicating pipe 31 through the communicating pipe 5, namely, the communicating cavity is filled with liquid 6, and the liquid level heights of the reference device 1 and the observer 2 are always consistent.
When the observation point is settled down h, the liquid level in the scope 2 initially falls down h, and since the liquid level is eventually equalized, the liquid 6 in the reference device 1 moves toward the scope 2 through the communication pipe 5 and the indicator pipe 31. Finally, the liquid level in the reference device 1 is lowered and the liquid level in the observer 2 is raised. In the process of transferring the liquid 6 from the reference device 1 to the observer 2, the indicating air bubble or the indicating member in the indicating tube 31 is pushed to move together, and the settlement value h is obtained by reading the moving distance L of the indicating air bubble or the indicating member and according to the conversion relation between the bubble moving distance L and the settlement value h which is established in advance.
In this embodiment, the collector 4 is connected to a remote image recognition device, and the remote image recognition device adopts a remote image recognition technology and an algorithm, and judges the moving positions of the bubbles at different times by monitoring the real-time recognition of the camera image by using a numerical image recognition technology, and introduces the time and position information into the prediction model in real time, thereby obtaining the settlement data in real time.
Compared with the prior art, the online real-time settlement observation equipment realizes the observation of settlement data through the reference device 1, the observer 2 and the indicator 3 which are communicated with each other, does not need a high-precision sensor, and greatly reduces the cost; the image information of the indicator 3 is collected in real time through the collector 4, and the collected image information is identified and monitored in real time by combining a remote image identification technology and an algorithm, so that the manual work is not needed, and the automatic observation is realized; through increaseing the ratio of the internal diameter of indicator 31 and water tank internal diameter, make indicator 31 internal diameter far less than the water tank internal diameter, small liquid level change can lead to being used for instructing the bubble or the indicator of registration to produce huge displacement distance in the indicator 31, utilize the internal diameter difference of benchmark ware, collector and indicator to enlarge the processing to subsiding information promptly, and remove with the bubble and carry out information acquisition, thereby reach the purpose that the test is small to subside, realize subsiding measuring high accuracy.
Example 2
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 5 together, the structure of the online real-time sedimentation observation apparatus provided in this embodiment is substantially the same as that of embodiment 1, and the difference is that the indicator 3 includes an indication panel 32 and a moving member 33, wherein the indication panel 32 is connected to the indication pipe 31, and the indication panel 32 is provided with an indication number, which includes a scale and a mark; the moving member 33 is connected to the indicator pipe 31 and the indicator panel 32, and the moving member 33 displays the amount of movement of the liquid 6 by using the thrust of the movement of the liquid 6 as a driving force.
The indicator tube 31 is fixed on the indicator panel 32, and interfaces are arranged at two ends of the indicator tube 31 and are hermetically connected with the reference device 1 and the observer 2 through the communicating tube 5 respectively. The moving member 33 is installed in the middle of the indicator tube 31, and the moving member 33 may be a bubble valve for generating a desired bubble, and the bubble valve may be a check valve into which the bubble is pressed and from which the liquid 6 in the indicator tube 31 cannot flow out. The setting mode has better sealing performance, more accurate indication and convenient use.
In the present embodiment, the indicator tube 31 is disposed on the indicator panel 32 in a curved manner, so that the length of the indicator tube 31 can be increased to the maximum in a limited panel area, and the settling value range of the settlement observation is wider and the application range is wider. The liquid 6 is colored liquid, and can be dyed red or other colors convenient to identify, so that the liquid is convenient to observe and identify. It is within the scope of the present document to achieve the above-described performance functions of the indicator 3 and the liquid 6.
In this embodiment, the liquid level in the indicator tube 31 is lower than the liquid level in the reference chamber 11 and the observation chamber 21, the liquid 6 does not flow in the indicator tube 31 due to the phenomenon of the occurrence of a fault in the liquid 6, the end of the indicator tube 31 communicated with the observer 2 is higher than the other end, when an observation point is settled, the liquid level thereof also drops h, the liquid 6 in the reference device 1 moves to the observer 2 through the communicating tube 5 and the indicator tube 31, and the potential energy of the indicator tube 31 is higher than that of the observer 2, so that the potential energy of the liquid 6 is increased in the flowing process of the indicator tube 31, the changing process is relatively smooth, the movement of bubbles in the liquid is facilitated, and the moving value of the liquid 6 is more accurately obtained.
In this embodiment, when there are a plurality of observation point locations in the actual implementation process, the reference device 1, the observer 2, and the indicator tube 31 are respectively provided with a plurality of and one-to-one correspondence, the collector 4 is installed in front of the indicator panel 32, and the indicator tubes 31 are all arranged on the indicator panel 32, so that the integration level is higher, the uniform observation at the same position is more convenient, the cost is lower, and the efficiency is higher. And recording the moving distance of the bubbles in real time through the collector 4 so as to obtain a settlement value. It is to be understood that the terms "front", "rear", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the reference 1, the observer 2, the indicator 3, and the collector 4 and their constituent parts must have specific orientations, be constructed in specific orientations, and operate, and thus, are not to be construed as limiting the present invention.
Example 3
Referring to fig. 1 to 5, an embodiment of an online real-time settlement observation method according to the present invention will be described. The online real-time settlement observation method comprises the steps of firstly determining the inner diameter R of a water tank at a reference point1Inner diameter R of water tank at observation point2And the inner diameter r of the scale plate pipeline, and calculating the sedimentation height h according to the bubble moving distance L, wherein connecting pipes are connected among the reference point water tank, the observation point water tank and the scale plate pipeline. The method comprises the following specific steps:
s1, according to the reference point, the inner diameter R of the water tank1Inner diameter R of water tank at observation point2And settling amount h, obtaining the volume of water which is displaced in the settling measurement process, namely the moving volume of the water in the connecting pipe
Wherein h is1As the final descending height of the water tank liquid level as the reference point, when R1And R2Same, h1＝0.5h；
S2, obtaining a bubble moving distance L according to the reference point water tank inner diameter R1, the observation point water tank inner diameter R2, the scale plate pipeline inner diameter R, the scale plate pipeline length S, the temperature T and the settling volume h, and further obtaining the bubble moving distance L and the reference point water tank liquid level descending height h1The relationship between:
the specific implementation steps of the step can be as follows:
s2.1, performing orthogonal experiments according to the reference point water tank inner diameter R1, the observation point water tank inner diameter R2, the scale plate pipeline inner diameter R, the scale plate pipeline length S, the temperature T and the settlement h to obtain the relation between the moving distance and the time of the bubbles in the scale plate pipeline generated in the settlement measurement process;
s2.2, establishing a relation curve of the moving distance L of the bubbles and the time t, and fitting a trend function L (f) (t) to obtain a prediction model;
the prediction model is characterized in that the movement rule of the bubbles under different settlement conditions is calibrated in advance, and the function of the movement distance and the time of the bubbles under different settlement conditions is fitted by obtaining a relation curve of the movement distance and the time of the bubbles. In the actual test process, as long as a plurality of points on the curve are known, the asymptote of the curve, namely the final bubble moving distance, can be predicted, and the settlement value can be calculated according to the asymptote.
And S2.3, observing and obtaining the bubble positions at a plurality of moments, predicting the final stable position of the bubble, namely the position of an asymptote according to the prediction model, and obtaining the moving distance L of the bubble.
In the actual measurement process, the final stable position of the bubble can be predicted by observing the bubble positions at several moments, please refer to the position of the asymptote in fig. 5, so as to obtain the final moving distance L. The specific implementation steps of the step can be as follows:
s2.3.1, observing and obtaining a coordinate value (t) of the moving distance L and the time t of the bubble close to the trend function according to the trend function L ═ f (t) obtained by calibration in advance (t)1,L1)、(t2,L2)；
S2.3.2, substituting the coordinate value-taking result into L ═ f (t), determining the parameter to be determined, and further obtaining the position of the asymptote.
When the amount of sedimentation is small, a period of time is required for the liquid level to be balanced because the difference in height between the reference point and the observation point is small. To improve the observed timeliness, the final equilibrium position can be predicted from the bubble movement trend.
S3, obtaining the relation between the settlement amount h of the observation point and the moving distance L of the bubble
The online real-time settlement observation method utilizes the principle of a communicating vessel to link the settlement value with the moving distance of the liquid 6 in the connecting pipe, and the tiny settlement is determined by observing the moving distance of the liquid 6 in the pipeline of the small scale plate, so that the settlement value is amplified. And the moving distance of the bubbles in the scale plate pipeline is used for representing the moving distance of the liquid 6, the camera is used for remotely observing and identifying, and the flow of the final stable liquid 6 is predicted by using the moving rule of the bubbles, so that the purpose of settlement observation is achieved, and meanwhile, the final stable position of the bubbles is predicted by establishing a prediction model, so that the timeliness of the detection result is effectively guaranteed.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An online real-time settlement observation device, comprising:
the benchmark device (1) is arranged at the benchmark point and is provided with a benchmark containing cavity (11);
the observer (2) is arranged at the observation point and is provided with an observation cavity (21);
the indicator (3) is respectively communicated with the reference device (1) and the observer (2) through a communicating pipe (5) and is provided with an indicating pipe (31), one end of the indicating pipe (31) is communicated with the reference device (1), the other end of the indicating pipe is communicated with the observer (2), the cross-sectional area of the indicating pipe (31) is respectively smaller than that of the reference accommodating cavity (11) and that of the observation accommodating cavity (21), the reference accommodating cavity (11), the observation accommodating cavity (21), the communicating pipe (5) and the indicating pipe (31) form a communicating cavity, and flowing liquid (6) is arranged in the communicating cavity;
and the collector (4) is arranged on one side of the indicator (3) and is used for collecting the image information of the indicator (3).
2. An online real-time sedimentation observation apparatus according to claim 1, wherein the indicator (3) comprises:
the indicating panel (32) is connected with the indicating pipe (31), and indicating numbers are arranged on the indicating panel (32);
and a moving member (33) connected to the indicator tube (31) and the indicator panel (32), respectively, wherein the moving member (33) displays the amount of movement of the liquid (6) by using the thrust of the movement of the liquid (6) as a driving force.
3. An on-line real-time sedimentation observation apparatus according to claim 2, wherein the indicator tube (31) is curvedly provided on the indicator panel (32).
4. The online real-time sedimentation observation device according to claim 3, wherein the liquid level in the indicator tube (31) is lower than the liquid level in the reference chamber (11) and the observation chamber (21), respectively, and one end of the indicator tube (31) communicated with the observer (2) is higher than the other end.
5. The online real-time sedimentation observation apparatus according to claim 2, wherein the reference device (1), the observer (2) and the indicator tube (31) are respectively provided in plurality and in one-to-one correspondence, and the indicator tubes (31) are all provided on the indicator panel (32).
6. An on-line real-time sedimentation observation apparatus according to claim 3, wherein the moving member (33) is a bubble valve, and the bubble valve is a check valve.
7. An online real-time sedimentation observation apparatus according to any one of claims 1-6, wherein the liquid (6) is a coloured liquid.
8. An online real-time settlement observation method is characterized by comprising the following specific steps:
step 1, according to the reference point, the inner diameter R of the water tank1Inner diameter R of water tank at observation point2And a sedimentation amount h, the volume of water displaced in the sedimentation measurement process is obtained
Wherein h is1As a reference point, when R is the falling height of the water tank liquid level1And R2Same, h1＝0.5h；
Step 2, obtaining a bubble moving distance L according to the reference point water tank inner diameter R1, the observation point water tank inner diameter R2, the scale plate pipeline inner diameter R, the scale plate pipeline length s, the temperature T and the settlement h, and further obtaining the bubble moving distance L and the reference point water tank liquid level descending height h1The relationship between:
step 3, obtaining the relation between the settlement h of the observation point and the moving distance L of the bubbles
9. The online real-time sedimentation observation method according to claim 8, wherein the step 2 comprises the following steps:
step 2.1, performing orthogonal experiments according to the reference point water tank inner diameter R1, the observation point water tank inner diameter R2, the scale plate pipeline inner diameter R, the scale plate pipeline length s, the temperature T and the settlement h to obtain the relation between the moving distance and the time of the bubbles in the scale plate pipeline generated in the settlement measurement process;
step 2.2, establishing a relation curve of the bubble moving distance L and the time t, and fitting a trend function L (f) (t) to obtain a prediction model;
and 2.3, observing and obtaining the bubble positions at multiple moments, predicting the final stable position of the bubble, namely the position of an asymptote according to the prediction model, and obtaining the moving distance L of the bubble.
10. The online real-time sedimentation observation method according to claim 9, wherein the step 2.3 comprises the following steps:
step 2.3.1, observing and obtaining a coordinate value (t) of the moving distance L and the time t of the bubble close to the trend function according to the trend function L ═ f (t)1,L1)、(t2,L2)；
And 2.3.2, substituting the coordinate value-taking result into L ═ f (t), determining a parameter to be determined, and further obtaining the position of an asymptote.
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| CN2572376Y (en) * | 2002-10-11 | 2003-09-10 | 中国船舶重工集团公司第七研究院第七一一研究所 | High-sensitivity pressure difference meter |
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| CN201788051U (en) * | 2010-09-03 | 2011-04-06 | 兰州交通大学 | Capillary-type ultramicro pressure measuring device |
| CN201876258U (en) * | 2010-12-03 | 2011-06-22 | 西安科技大学 | Building differential settlement measuring device |
| CN202350780U (en) * | 2011-06-13 | 2012-07-25 | 绵阳市奇石缘科技有限公司 | Highly-intelligent settlement observation system based on principle of communicating vessels |
| CN109631840A (en) * | 2018-12-18 | 2019-04-16 | 广州库克测控科技有限公司 | A kind of tolerance formula settlement monitoring device, system and method |
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2021
- 2021-02-10 CN CN202110184370.5A patent/CN112781548B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2572376Y (en) * | 2002-10-11 | 2003-09-10 | 中国船舶重工集团公司第七研究院第七一一研究所 | High-sensitivity pressure difference meter |
| CN201569532U (en) * | 2009-12-11 | 2010-09-01 | 合肥杜威仪表科技有限公司 | Fluid differential gage |
| CN201788051U (en) * | 2010-09-03 | 2011-04-06 | 兰州交通大学 | Capillary-type ultramicro pressure measuring device |
| CN201876258U (en) * | 2010-12-03 | 2011-06-22 | 西安科技大学 | Building differential settlement measuring device |
| CN202350780U (en) * | 2011-06-13 | 2012-07-25 | 绵阳市奇石缘科技有限公司 | Highly-intelligent settlement observation system based on principle of communicating vessels |
| CN109631840A (en) * | 2018-12-18 | 2019-04-16 | 广州库克测控科技有限公司 | A kind of tolerance formula settlement monitoring device, system and method |
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