CN115096359A - Metal roof health monitoring system and method - Google Patents
Metal roof health monitoring system and method Download PDFInfo
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- CN115096359A CN115096359A CN202210691940.4A CN202210691940A CN115096359A CN 115096359 A CN115096359 A CN 115096359A CN 202210691940 A CN202210691940 A CN 202210691940A CN 115096359 A CN115096359 A CN 115096359A
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention discloses a metal roof health monitoring system and a method, wherein the method comprises the steps of collecting metal roof state information including displacement information, stress-strain information and climate information through a sensor module; the method comprises the steps that metal roof state information is obtained through a data acquisition module and is sent to a remote monitoring terminal through a wireless communication module; the remote monitoring terminal constructs a roof health state time-varying model based on the metal roof state information, outputs a safety threshold value, and can realize early warning before the metal roof breaks down. According to the invention, the safety threshold value can be updated in real time by updating the roof health state time-varying model in real time, and the function of early warning is realized when the roof degradation condition exceeds the safety threshold value.
Description
Technical Field
The invention relates to the technical field of metal roof performance evaluation, in particular to a metal roof health monitoring system and a metal roof health monitoring method.
Background
The metal roof enclosure system is an important component of large-span steel structure buildings such as airport terminal buildings, stations, exhibition centers and the like, and has excellent structural performance and appearance adaptability. However, due to the fact that the roof is exposed to complex weather environments all the year round, accidents such as roof deformation, cracking and even roof uncovering caused by wind-induced damage frequently occur, and severe influences and huge economic losses are caused. Health condition monitoring and wind uncovering resistance degradation prediction after entering service period are a bottleneck to be urgently broken through in the wind and disaster resistant engineering of the large-span metal roof.
The monitoring device or the method designed at home and abroad at present can realize the collection or fault judgment of the roofing information and can play a feedback role in the health condition of the roofing system. However, the monitoring systems have certain hysteresis, can only play a feedback role when the roof fails, can realize accurate prediction or early warning before the failure occurs in some large-scale large-span roof structures, can avoid economic loss at a high probability, and has important significance for guaranteeing the safe service and stable operation of public and industrial buildings.
Therefore, how to provide a method and a system for monitoring the health of a metal roof, which can perform early warning in advance, is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a metal roof health monitoring system and method, which can realize early warning before a metal roof fails.
In order to achieve the purpose, the invention adopts the following technical scheme:
a metal roofing health monitoring method comprising:
acquiring state information of the metal roof through a sensor module, wherein the state information comprises displacement information, stress-strain information and climate information;
the method comprises the steps that metal roof state information is obtained through a data acquisition module and is sent to a remote monitoring terminal through a wireless communication module;
the remote monitoring terminal constructs a roof health state time-varying model based on the metal roof state information, outputs a safety threshold value and realizes early warning.
Preferably, the roof health state time-varying model is constructed in a Gaussian process supervision mode.
A metal roofing health monitoring system comprising:
a sensor module: the system is used for acquiring state information of the metal roof, wherein the state information comprises displacement information, stress-strain information and climate information;
a data acquisition module: the method is used for acquiring the state information of the metal roof;
a wireless communication module: the system comprises a remote monitoring terminal, a monitoring terminal and a monitoring server, wherein the remote monitoring terminal is used for sending state information of a metal roof to the remote monitoring terminal; and
remote monitoring terminal: and constructing a roof health state time-varying model based on the metal roof state information, outputting a safety threshold value and realizing early warning.
Preferably, the sensor module comprises a longitudinal laser sensor, a transverse laser sensor, a meteorological acquisition sensor and a stress-strain sensor;
the longitudinal laser sensor is used for collecting the longitudinal displacement of the metal roof;
the transverse laser sensor is used for collecting the transverse displacement of the metal roof;
the weather acquisition sensor is used for acquiring environmental data on the metal roof, including wind power, wind direction, temperature, humidity and air pressure data;
the stress-strain sensor is used for collecting stress and deformation data of the metal roof.
Preferably, the roof support also comprises a wind-resistant clamp and a support, wherein the wind-resistant clamp is fixed on the metal roof, and the support is fixed at the top end of the wind-resistant clamp;
the longitudinal laser sensor, the transverse laser sensor, the meteorological acquisition sensor and the data acquisition module are fixed on the support, and the stress-strain sensor is fixed at the trough position of the metal roof.
Preferably, the solar energy power supply device further comprises a solar panel, wherein the solar panel is fixed on the top of the support and used for supplying power to the system.
Preferably, the system further comprises a video acquisition module for acquiring the metal roof site video.
According to the technical scheme, compared with the prior art, the metal roof health monitoring system and the metal roof health monitoring method provided by the invention have the advantages that the safety threshold can be updated in real time by updating the roof health state time-varying model in real time, and the function of early warning is realized when the roof degradation condition exceeds the safety threshold.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flow chart of a metal roof health monitoring method provided by the invention.
Fig. 2 is a schematic structural diagram of a metal roof health monitoring system provided by the invention.
Fig. 3 is a schematic block diagram of a metal roof health monitoring system provided by the present invention.
Fig. 4 is a communication architecture diagram of a metal roof health monitoring system according to the present invention.
101, a longitudinal laser sensor, 102, a transverse laser sensor, 103, a stress strain sensor, 104, a wind-resistant clamp, 105, a bracket, 106, a solar panel, 107, a data acquisition module, 108 and an antenna.
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.
The embodiment of the invention discloses a metal roof health monitoring method, which comprises the following steps of:
acquiring state information of the metal roof through a sensor module, wherein the state information comprises displacement information, stress-strain information and climate information;
the method comprises the steps that metal roof state information is obtained through a data acquisition module and is sent to a remote monitoring terminal through a wireless communication module;
the remote monitoring terminal constructs a roof health state time-varying model in a Gaussian process supervision mode based on the metal roof state information,
the model creating process specifically comprises the following steps:
(1) and collecting the state variables of the roof in a month period, wherein the state variables comprise key parameters such as temperature, humidity, wind power, wind direction, precipitation and the like.
(2) And calculating the average value of the acquired values of the key parameters, wherein the average values form a vector.
(3) A kernel function (e.g., covariance function) is established based on the correlation between each key parameter.
(4) Based on a Gaussian process kernel function, a covariance matrix K is generated, the determined quantity is directly filled into the matrix, and the unknown quantity is a 'hyperparameter'.
(5) And obtaining an expression of the unknown point based on Bayesian inference.
(6) Solving the hyperparameters by utilizing maximum likelihood estimation.
(7) And substituting the acquired data to obtain a prediction model, and outputting a safety threshold value to realize early warning.
The specific process is as follows: the collected and stored roof state data are converted into effective load force, and the roof health state time-varying model is corrected in time, and can be degraded in an accelerated manner under different climatic conditions, vibration, pressure and other external environments, so that the roof health state time-varying model in a special environment is corrected, the corrected roof health state time-varying model is more accurate, and different working condition environments are met. After the modified roof health state time-varying model is available, the safety threshold value can be given by the roof health state time-varying model. The numerical value output after the existing metal roof state information is input into the model is compared with the safety threshold value, and whether the numerical value exceeds the threshold value predicted by the roof health state time-varying model under the working condition environment is judged, so that the alarm function is realized.
This embodiment provides a metal roofing health monitoring system, as shown in fig. 3, includes:
a sensor module: the system is used for acquiring state information of the metal roof, wherein the state information comprises displacement information, stress-strain information and climate information;
a data acquisition module: the method comprises the steps of obtaining state information of the metal roof;
the wireless communication module: the system comprises a remote monitoring terminal, a monitoring terminal and a monitoring server, wherein the remote monitoring terminal is used for sending state information of a metal roof to the remote monitoring terminal; and
remote monitoring terminal: and constructing a roof health state time-varying model based on the metal roof state information, outputting a safety threshold value and realizing early warning.
As shown in fig. 2, the sensor module includes a longitudinal laser sensor 101, a transverse laser sensor 102, a weather collection sensor, and a stress-strain sensor 103;
the longitudinal laser sensor 101 is used for acquiring the longitudinal displacement of the metal roof;
the transverse laser sensor 102 is used for acquiring the transverse displacement of the metal roof;
the meteorological acquisition sensor is used for acquiring environmental data on the metal roof, wherein the environmental data comprises wind power, wind direction, temperature, humidity and air pressure data;
the stress-strain sensor 103 is used for collecting stress and deformation data of the metal roof.
The roof structure also comprises a wind-resistant clamp 104 and a bracket 105, wherein the wind-resistant clamp 104 is fixed on the metal roof through a fastening bolt, and the bracket 105 is fixed at the top end of the wind-resistant clamp through a bolt; preferably, in order to fix the roof more firmly, the wind-resistant clips 104 are installed on both sides of the metal roof, and both sides of the bracket 105 are respectively fixed on the two wind-resistant clips 104.
The longitudinal laser sensor 101, the transverse laser sensor 102, the meteorological acquisition sensor and the data acquisition module 107 are fixed on the support, the meteorological acquisition sensor is arranged in the data acquisition module 107, the stress-strain sensor 103 is fixed at the wave trough position of the roof in an electric soldering mode, and surface treatment is carried out by structural sealant.
And the solar panel 106 is also included, and the solar panel 106 is fixed on the top of the bracket 105 and used for supplying power to the system.
As shown in fig. 3, the intelligent monitoring system further comprises a video acquisition module for acquiring the on-site video of the metal roof, and sending the video to the remote monitoring terminal through the wireless communication module, so that the state of the roof can be conveniently checked in real time.
The working mode of the invention is as follows:
a plurality of devices shown in fig. 4 are installed in a monitoring area, a plurality of signal acquisition devices are arranged into a group to establish an area acquisition group by using a long-distance radio (LoRa) communication mode, and communication is established with a wireless gateway through a wireless communication module. During work, the battery supplies power, and the battery is intelligently charged by the solar panel. Acquiring longitudinal displacement data of the roof by using a longitudinal laser sensor; the transverse laser sensor collects the integral transverse displacement of the metal roof to reflect the influence of temperature on the deformation of the plate surface; acquiring wind power, wind direction, temperature, humidity and air pressure data of the roof environment through a meteorological acquisition sensor arranged in an acquisition module; and acquiring deformation and stress data of the roof panel through the stress-strain sensor. The collected data are transmitted to a physical server of the remote monitoring terminal through the antenna 108 and stored in a well-established database, so that later-period data calling is facilitated. When extreme weather occurs or the time efficiency reaches a safety threshold, the terminal has an early warning interface, and meanwhile, the field video is popped up, so that a manager can judge the actual state of the roof system through the data and the video at the same time to prevent fault misjudgment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
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 (7)
1. A metal roof health monitoring method is characterized by comprising the following steps:
acquiring state information of the metal roof through a sensor module, wherein the state information comprises displacement information, stress-strain information and climate information;
the method comprises the steps that metal roof state information is obtained through a data acquisition module and is sent to a remote monitoring terminal through a wireless communication module;
the remote monitoring terminal constructs a roof health state time-varying model based on the metal roof state information, outputs a safety threshold value and realizes early warning.
2. The metal roof health monitoring method according to claim 1, wherein the roof health state time-varying model is constructed in a supervised manner through a gaussian process.
3. A metal roofing health monitoring system, comprising:
a sensor module: the system is used for collecting metal roof state information, including displacement information, stress-strain information and climate information;
a data acquisition module: the method comprises the steps of obtaining state information of the metal roof;
the wireless communication module: the system comprises a remote monitoring terminal, a monitoring terminal and a monitoring server, wherein the remote monitoring terminal is used for sending state information of a metal roof to the remote monitoring terminal; and
remote monitoring terminal: and constructing a roof health state time-varying model based on the metal roof state information, outputting a safety threshold value and realizing early warning.
4. The metal roofing health monitoring system of claim 3 wherein the sensor modules comprise longitudinal laser sensors, transverse laser sensors, weather gathering sensors and stress-strain sensors;
the longitudinal laser sensor is used for collecting the longitudinal displacement of the metal roof;
the transverse laser sensor is used for collecting the transverse displacement of the metal roof;
the weather acquisition sensor is used for acquiring environmental data on the metal roof, including wind power, wind direction, temperature, humidity and air pressure data;
the stress-strain sensor is used for collecting stress and deformation data of the metal roof.
5. The metal roof health monitoring system of claim 4, further comprising a wind-resistant clip and a bracket, wherein the wind-resistant clip is fixed on the metal roof, and the bracket is fixed at the top end of the wind-resistant clip;
the longitudinal laser sensor, the transverse laser sensor, the meteorological acquisition sensor and the data acquisition module are fixed on the support, and the stress-strain sensor is fixed at the trough position of the metal roof.
6. The metal roofing health monitoring system of claim 5, further comprising a solar panel secured to a top of the support for providing power to the system.
7. The metal roofing health monitoring system of claim 3 further comprising a video capture module for capturing video of a metal roofing site.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116561670A (en) * | 2023-07-12 | 2023-08-08 | 森特士兴集团股份有限公司 | Metal roof health state identification and alarm method |
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|---|---|---|---|---|
| CN116561670A (en) * | 2023-07-12 | 2023-08-08 | 森特士兴集团股份有限公司 | Metal roof health state identification and alarm method |
| CN116561670B (en) * | 2023-07-12 | 2023-09-26 | 森特士兴集团股份有限公司 | Metal roof health state identification and alarm method |
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