CN116046059A - Visualization method suitable for air bearing type membrane structure monitoring - Google Patents
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- 239000012528 membrane Substances 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 title claims abstract description 33
- 238000007794 visualization technique Methods 0.000 title claims abstract description 13
- 230000001133 acceleration Effects 0.000 claims abstract description 25
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- 238000005259 measurement Methods 0.000 claims description 17
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The invention relates to a visualization method suitable for monitoring an air-supported membrane structure, and belongs to the field of large-span space structures. The method associates freely movable measuring points to corresponding channels and is arranged on a corresponding background plate, so that the data visualization of the measuring points of the film structure is realized. And obtaining a visualization scheme with different indexes by different background plates and measuring point arrangements. The method specifically comprises the steps of realizing the visualization of displacement, acceleration, wind pressure and strain and arranging. The background plate is composed of two-dimensional air bearing type membrane structure front view measuring points, and can be classified by the number and types of the measuring points; the measuring points need to be associated with measuring channels, set value types and can move freely. After the background version is classified, newly-built measuring points are built under the background version of each type, after the setting is finished, the corresponding measuring points are moved to the sensor positions of the corresponding channels according to the measuring point types, and then the visual monitoring of the response of the whole structure can be completed. The method can more intuitively see the correlation between the variable scale of all the measuring points of the bearing type membrane structure and the structure.
Description
Technical Field
The invention relates to a visualization method suitable for monitoring an air-supported membrane structure, and belongs to the technical field of large-span space structures.
Background
The air bearing type membrane structure is widely applied to large-span space buildings such as coal sheds, stadiums and the like. Compared with the traditional structural form, the air-bearing membrane structure has lighter weight, smaller rigidity and larger deformation, and is more sensitive to wind load, so that the health monitoring requirement is higher and the monitoring index is more. The monitoring indexes generally comprise acceleration, wind pressure, displacement, strain and the like, and the positions of measuring points of the monitoring indexes are generally different and are respectively used for describing the speed change speed of the surface of the structure, the wind pressure, the displacement change, the cable gateway key position strain and the like.
The monitoring index functions are different, units are different, and the condition of the overall structure is difficult to grasp by analyzing the monitoring data curve of each channel independently. Because of the independence of data acquisition, it is also difficult to analyze individual stations simultaneously, and thus it is not easy to grasp the correlation. The number of channels required for each monitoring index is also different: the specific conditions of the measuring points can be described by only one channel for strain and wind pressure; the acceleration and displacement measuring points need three channels to describe, namely, they are decomposed into variables on three axes X, Y, Z to reflect the specific conditions. With the increase of the measuring points, the increment of the monitoring data is three times that of the measuring points, so that the monitoring data volume is very large, and the analysis of the data is not facilitated.
Disclosure of Invention
Aiming at the difficulty in the existing integral observation, the invention aims to develop a simple method suitable for health monitoring of an air-bearing membrane structure, combines a visual measuring point layout mode with a design plane front view, gives consideration to the measuring point and the integral structure in a more visual mode, and ensures the synchronism of data of each measuring point during health monitoring. Since most air-supported membrane structures are not layered, and are pillow-shaped in structure, the planar front view contains most of the information of the structure. This feature makes it possible to express all information of the three-dimensional measurement point in a two-dimensional plane.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides a visual method suitable for air bearing formula membrane structure monitoring, regard whole air bearing formula membrane structure design plane front view as the background edition, add the mode of movable measurement point, realize audio-visual air bearing formula membrane structure's whole observation, specifically:
step one: setting a sensor on an air bearing type membrane structure, establishing an actual measuring point and an observation index: displacement, acceleration, wind pressure, and strain; connecting with an actual measuring point signal collector;
step two: dividing the background plate on the computer into different types according to different observation indexes, or setting the low-density observation points in the same background plate;
step three: creating a movable measuring point on the background plate and binding a channel; the channel corresponds to a channel of a time domain curve on the actual measuring point signal collector and is used for displaying actual measuring point signal actual measurement values in real time; setting the display numerical value type of the movable measuring point on the background plate; setting the movable measuring point on the background plate to be the same as the position and the observation index of the actual measuring point of the air bearing type membrane structure in the first step, wherein the plane coordinate on the background plate is the same as the actual installation coordinate of the sensor on the air bearing type membrane structure;
step four: setting all movable measuring points and channels corresponding to the observation indexes, and moving the movable measuring points and channels to positions corresponding to the background plates;
step five: selecting other observation indexes, and manufacturing a background layout for finishing the other observation indexes according to the second step to the fourth step;
step six: after the setting is finished, the display end is opened and the actual measuring point signal collector is connected, the time domain curves acquired by the different and relatively independent actual measuring point signal collectors are integrated together according to the same time by observing the background plates of different observation indexes, the relevance among the movable measuring points is analyzed and tidied on the background plates, the relevance between the variable scales and the structure of all the movable measuring points is intuitively obtained by comparing the magnitude of the numerical values, and therefore the integral visual monitoring of the air bearing type membrane structure is completed, and the aim of observing the response of the integral structure along with wind load is fulfilled.
Further, the background version is classified according to the number and types of actual measuring points.
Further, in the second step, in the background classification, three parameter measuring points are classified into one type so as to accurately describe the measuring point positions; points of similar numerical type fall into one category.
In the third step, all the movable measuring points are valued in real time by the actual measuring point signal collector, and the updating time is kept consistent.
Further, in the third step, the movable measurement points are associated to corresponding channels, and each movable measurement point corresponds to only one channel; for the measuring points described by the three parameters, three parameters are added to respectively correspond to the three channels, the middle parameter is taken to be placed on the corresponding actual measuring point coordinates on the background plate, and the other two parameters are respectively placed on the background plate coordinates on the upper side and the lower side of the middle parameter.
Further, in the third step, the display numerical value types of the movable measurement points are divided into two modes: one is the two-digit display after the decimal point, and the other is a scientific counting method; for a measuring point with a proper sampling unit, a counting mode of decimal points is selected, so that the change scale of the movable measuring point along with time can be conveniently and accurately reflected; for the movable measuring point which is difficult to find a proper international system, a display mode of a scientific counting method is selected so as to avoid the overlarge or undersize display digit, and the variable scale of the movable measuring point is difficult to describe.
Further, in the background classification, displacement and acceleration observation indexes need to be described by three variables, and the three variables correspond to three channels and are classified into one type so as to accurately describe the positions of the measuring points; the measuring points with similar wind pressure and strain value types are classified into one type, and the two-digit display or scientific counting display after the decimal point is adopted.
Further, the air bearing type membrane structure is pillow-shaped. And the structure has no staggered overlapping part, so that all the measuring points on the structure do not overlap, and all the information of the structure health monitoring can be reflected on the basis of a two-dimensional background plate.
The invention has the beneficial effects that:
1. the invention solves the problem of integral observation of the structure in a two-dimensional view, is relatively visual, and saves more calculation resources compared with a three-dimensional mode.
2. The invention can reasonably classify the data observation, is convenient for switching comparison among different data, and can solve the observation problem of a large amount of data with a small amount of background.
3. The invention has been put into practice in projects, and is initiated in the observation of the large-span air-bearing membrane structure, and can be popularized to the health monitoring of other large-span structures based on the flexibility of the measuring point arrangement.
Drawings
FIG. 1 is a schematic diagram of real-time displacement offset and partial measurement point data amplification of a background version of an embodiment of the invention;
FIG. 2 is a schematic diagram of real-time acceleration and partial measurement point data amplification of a background version of the embodiment of the invention;
FIG. 3 is a schematic diagram showing the real-time wind pressure, strain and partial measurement point data amplification of a background version of the embodiment of the invention;
FIG. 4 is a graph illustrating time domain acceleration curves according to an embodiment of the present invention;
FIG. 5 is a graph illustrating a time domain plot of strain according to an embodiment of the present invention;
FIG. 6 is a station interface created in accordance with an embodiment of the present invention;
FIG. 7 is a station setup interface created by an embodiment of the present invention;
FIG. 8 is a schematic diagram of a measurement point of an acceleration background version according to an embodiment of the present invention.
Detailed Description
The invention will be described in further detail with reference to fig. 1-8 and the detailed description, which are not intended to limit the invention.
Examples
The invention discloses a visualization method suitable for monitoring an air bearing type membrane structure, which is used for a coal shed and comprises the following specific steps:
step one: setting a sensor on an air bearing type membrane structure, establishing an actual measuring point and an observation index: displacement, acceleration, wind pressure, and strain; connecting with an actual measuring point signal collector;
step two: and dividing the background plate on the computer into different types according to different observation indexes, or setting the low-density observation points in the same background plate.
As shown in fig. 1, 2 and 3, a background plate is selected first, and the background plate is classified according to the density and type of the measuring points. Wherein the displacement has 7 measuring points, and the total number of the measuring points is 21; the acceleration has 12 measuring points, and the total of 36 channels; the number of wind pressure measuring points is 12, the number of strain measuring points is 14, and the number of channels is 26. The background version is divided into three types of descriptions of displacement, acceleration and wind pressure strain.
In background classification, displacement and acceleration observation indexes need three variables to be described, and the three variables are divided into one class corresponding to three channels so as to accurately describe the positions of measuring points; the measuring points with similar wind pressure and strain value types are classified into one type, and the two-digit display or scientific counting display after the decimal point is adopted.
And finally, naming the background versions respectively.
Step three: after the background plate is manufactured, a movable measuring point is established on the background plate, and a channel is bound; the channel corresponds to a channel of a time domain curve on the actual measuring point signal collector and is used for displaying actual measuring point signal actual measurement values in real time; setting the display numerical value type of the movable measuring point on the background plate; and setting the movable measuring point on the background plate to be the same as the position and the observation index of the actual measuring point of the air bearing type membrane structure in the step one, wherein the plane coordinate on the background plate is the same as the actual installation coordinate of the sensor on the air bearing type membrane structure.
Specifically, because the settings of the measurement points are not the same, acceleration and strain measurement points will be described as examples. As shown in fig. 4, a time domain plot of acceleration is shown. It can be seen that the acceleration change is very small but jumps around a value of 0. If a scientific counting method is not used, the whole monitoring result is that the acceleration of all measuring points is 0.00, and the reference value of the monitoring result is lost due to the fact that all the measuring points are equal to 0 acceleration values. The acceleration is thus suitably arranged in the form of a scientific counting method.
As shown in fig. 5, a time domain plot of strain. It can be seen that the strain values range from-364.04 to-374.04. The strain measuring points are arranged in a form of two positions after the decimal point is reserved, so that the overall change rule of the strain can be intuitively seen, and unnecessary conversion can be increased by arranging the strain measuring points in a scientific counting method. Therefore, more visual measurement point numerical value types need to be set when the unit setting is reasonable, and a scientific counting method needs to be used when the unit setting is difficult to set reasonably.
The acceleration is taken as an example to create a measuring point. As shown in FIG. 6, a single right button on the background, selecting to create a survey point, then pops up the dialog box shown in FIG. 7. And selecting a binding channel of the new test point, which corresponds to the channel of the time domain curve of the acquisition end, and then selecting a science counting method to display options. At this time, a new measuring point appears on the background plate, and the measured value of the channel is displayed on the right end. The measurement point is then moved to the corresponding position of the sensor, as shown in FIG. 8. The left measuring point represents the position of the sensor corresponding to the channel, and the right numerical value represents the measured value of the sensor.
All movable measuring points are valued in real time by an actual measuring point signal collector, and the updating time is kept consistent. Furthermore, the movable stations are associated to corresponding channels, only one channel for each movable station. For the measuring points described by the three parameters, three parameters are added to respectively correspond to the three channels, the middle parameter is taken to be placed on the corresponding actual measuring point coordinates on the background plate, and the other two parameters are respectively placed on the background plate coordinates on the upper side and the lower side of the middle parameter. For example, because an acceleration sensor requires three variables to describe a specific value of a point, three points are required to describe corresponding to three channels of the sensor. At this time, the measuring point in the y direction is placed at the actual position of the sensor, the x direction is placed above the measuring point, and the z direction is placed below the measuring point, so that the measuring point is convenient to display. When the measuring point is positioned on the position of the corner cable of the film surface, the positions of the measuring points in the x and z directions are properly adjusted, and the positions of the measuring points are properly adjusted according to the axis of the cable, so that the mounting form of the measuring point is better reflected for attractive appearance. Thus, the channels corresponding to all accelerations are provided with measuring points and moved to proper positions, and the background layout of the accelerations is prepared.
The displacement setting is the same as the acceleration, but the hook in front of the scientific counting method can be removed when the measuring point is set, as shown in fig. 7.
The unit arrangement of the wind pressure and strain measuring points is reasonable, so that scientific counting method display is not needed, and the measuring point positions can be described by only one variable, so that the measuring points are only required to be moved to the sensor positions and are displayed by a background plate.
Step four: setting all movable measuring points and channels corresponding to the observation indexes, and moving the movable measuring points and channels to positions corresponding to the background plates;
step five: selecting other observation indexes, and manufacturing a background layout for finishing the other observation indexes according to the second step to the fourth step; thus, all 83 channels can be displayed in a full visual mode by only three background plates, and the observation of the overall response of the structure is realized.
Step six: after the setting is finished, the display end is opened and the actual measuring point signal collector is connected, the time domain curves acquired by the different and relatively independent actual measuring point signal collectors are integrated together according to the same time by observing the background plates of different observation indexes, the relevance among the movable measuring points is analyzed and tidied on the background plates, the relevance between the variable scales and the structure of all the movable measuring points is intuitively obtained by comparing the magnitude of the numerical values, and therefore the integral visual monitoring of the air bearing type membrane structure is completed, and the aim of observing the response of the integral structure along with wind load is fulfilled.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (8)
1. The visualization method suitable for monitoring the air-bearing membrane structure is characterized by comprising the following steps of: the method takes the front plane view of the design plane of the integral air-bearing type membrane structure as a background plate, adds movable measuring points, realizes the integral observation of the visual air-bearing type membrane structure, and specifically comprises the following steps:
step one: setting a sensor on an air bearing type membrane structure, establishing an actual measuring point and an observation index: displacement, acceleration, wind pressure, and strain; connecting with an actual measuring point signal collector;
step two: dividing the background plate on the computer into different types according to different observation indexes, or setting the low-density observation points in the same background plate;
step three: creating a movable measuring point on the background plate and binding a channel; the channel corresponds to a channel of a time domain curve on the actual measuring point signal collector and is used for displaying actual measuring point signal actual measurement values in real time; setting the display numerical value type of the movable measuring point on the background plate; setting the movable measuring point on the background plate to be the same as the position and the observation index of the actual measuring point of the air bearing type membrane structure in the first step, wherein the plane coordinate on the background plate is the same as the actual installation coordinate of the sensor on the air bearing type membrane structure;
step four: setting all movable measuring points and channels corresponding to the observation indexes, and moving the movable measuring points and channels to positions corresponding to the background plates;
step five: selecting other observation indexes, and manufacturing a background layout for finishing the other observation indexes according to the second step to the fourth step;
step six: after the setting is finished, the display end is opened and the actual measuring point signal collector is connected, the time domain curves acquired by the different and relatively independent actual measuring point signal collectors are integrated together according to the same time by observing the background plates of different observation indexes, the relevance among the movable measuring points is analyzed and tidied on the background plates, the relevance between the variable scales and the structure of all the movable measuring points is intuitively obtained by comparing the magnitude of the numerical values, and therefore the integral visual monitoring of the air bearing type membrane structure is completed, and the aim of observing the response of the integral structure along with wind load is fulfilled.
2. A visualization method for air supported membrane structure monitoring as defined in claim 1, wherein: the background version is classified according to the number and the type of actual measuring points.
3. A visualization method for air supported membrane structure monitoring as defined in claim 2, wherein: in the second step, in the background classification, three parameter measuring points are classified into one type so as to accurately describe the measuring point positions; points of similar numerical type fall into one category.
4. A visualization method for air supported membrane structure monitoring as defined in claim 3, wherein: in the third step, all movable measuring points are valued in real time by an actual measuring point signal collector, and the updating time is kept consistent.
5. A visualization method for air supported membrane structure monitoring as defined in claim 4 wherein: in the third step, the movable measuring points are associated to the corresponding channels, and each movable measuring point only corresponds to one channel; for the measuring points described by the three parameters, three parameters are added to respectively correspond to the three channels, the middle parameter is taken to be placed on the corresponding actual measuring point coordinates on the background plate, and the other two parameters are respectively placed on the background plate coordinates on the upper side and the lower side of the middle parameter.
6. A visualization method for air supported membrane structure monitoring as defined in claim 5, wherein: in the third step, the display numerical value types of the movable measurement points are divided into two modes: one is the two-digit display after the decimal point, and the other is a scientific counting method; for a measuring point with a proper sampling unit, a counting mode of decimal points is selected, so that the change scale of the movable measuring point along with time can be conveniently and accurately reflected; for the movable measuring point which is difficult to find a proper international system, a display mode of a scientific counting method is selected so as to avoid the overlarge or undersize display digit, and the variable scale of the movable measuring point is difficult to describe.
7. A visualization method for air supported membrane structure monitoring as defined in claim 6, wherein: in the background classification, displacement and acceleration observation indexes are described by three variables, and are classified into one type corresponding to three channels so as to accurately describe the positions of measuring points; the measuring points with similar wind pressure and strain value types are classified into one type, and the two-digit display or scientific counting display after the decimal point is adopted.
8. A visualization method for air supported membrane structure monitoring as defined in claim 1, wherein: the air bearing type membrane structure is pillow-shaped.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128725A (en) * | 2010-12-02 | 2011-07-20 | 李惠 | Method for monitoring health and pre-warning safety of large-span space structure |
| US20140067284A1 (en) * | 2002-06-11 | 2014-03-06 | Intelligent Technologies International, Inc. | Structural monitoring |
| JP7018234B1 (en) * | 2021-04-13 | 2022-02-10 | ▲広▼州大学 | Power response test method under wind and rain load action of membrane structure |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140067284A1 (en) * | 2002-06-11 | 2014-03-06 | Intelligent Technologies International, Inc. | Structural monitoring |
| CN102128725A (en) * | 2010-12-02 | 2011-07-20 | 李惠 | Method for monitoring health and pre-warning safety of large-span space structure |
| JP7018234B1 (en) * | 2021-04-13 | 2022-02-10 | ▲広▼州大学 | Power response test method under wind and rain load action of membrane structure |
Non-Patent Citations (1)
| Title |
|---|
| 张其林;陈鲁;朱丙虎;李大林;: "大跨度空间结构健康监测应用研究", 施工技术, no. 04, 25 February 2011 (2011-02-25), pages 3 - 8 * |
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