CN112611347A - Method, system and equipment for monitoring inclination deflection - Google Patents
Method, system and equipment for monitoring inclination deflection Download PDFInfo
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Abstract
The invention provides a method, a system and equipment for monitoring inclination deflection, wherein the method comprises the following steps: the method comprises the steps that observed values are obtained in real time through a plurality of sensor chip sets, the sensor chip sets are arranged in a surrounding mode through 2n +1 inclination angle sensors, n is not less than 1 and is an integer, and shafting of the inclination angle sensors is kept consistent; processing the observed value according to a preset algorithm, obtaining a qualified observed value, and storing the qualified observed value in a local place; detecting whether the qualified observed value exceeds a preset threshold value; if the qualified observation value does not exceed a preset threshold value, acquiring a stable observation value within a preset time period according to the qualified observation value and transmitting the stable observation value to a cloud server; and if the qualified observed value exceeds a preset threshold value, starting the long connection for real-time transmission, and resolving according to the qualified observed value to obtain a deflection value. The invention can identify and reject gross errors of observed values, improves the reliability of observed data, has a transmission mechanism of timing drive and event drive, and meets the requirements of mutation detection and low power consumption.
Description
Technical Field
The invention relates to the technical field of measurement of inclination angle sensing chips, in particular to an inclination angle deflection monitoring method, system and equipment.
Background
The deflection refers to the linear displacement of the rod axis in the direction perpendicular to the axis or the linear displacement of the plate shell surface in the direction perpendicular to the middle surface when a building or a component thereof is stressed or changes due to non-uniform temperature. According to the structural design specification, the deflection effect of the bent member is fully considered during the design, and the maximum deflection of the bent member is calculated according to the standard combination of the load effect and the influence of the long-term action of the load. In order to ensure the operation safety of the structure, the development of deflection observation and evaluation is very necessary.
At present, deflection monitoring of structures such as cantilever buildings (structures) or bridges mainly comprises two major observation modes, namely a manual observation method represented by geometric leveling, TPS (thermoplastic polystyrene) for measuring small angles, a dial indicator and the like; the other is an automated observation method represented by static leveling, displacement meters, tilt angle sensing and the like. However, the sampling is carried out by adopting a manual observation method, so that the requirements of automation and real-time dynamic monitoring cannot be met; the static level and the displacement meter in the existing automatic observation method have the defect of difficult observation reference selection; and the inclination angle sensing lacks the mutation detection capability, so that the reliability of the observed data is not clear.
Disclosure of Invention
Accordingly, it is desirable to provide a tilt deflection monitoring method, system and apparatus for solving the above problems.
A method for monitoring deflection of an inclination angle comprises the following steps: the method comprises the steps that observed values are obtained in real time through a plurality of sensor chip sets, the sensor chip sets are arranged in a surrounding mode through 2n +1 inclination angle sensing chips, n is not less than 1 and is an integer, and shafting of the inclination angle sensing chips is kept consistent; processing the observed value according to a preset algorithm to obtain a qualified observed value, and storing the qualified observed value in a local place; detecting whether the qualified observed value exceeds a preset threshold value; if the qualified observation value does not exceed a preset threshold value, acquiring a stable observation value within a preset time period according to the qualified observation value and transmitting the stable observation value to a cloud server; and if the qualified observed value exceeds a preset threshold value, starting the long link for real-time transmission, and resolving according to the qualified observed value to obtain a deflection value.
In one embodiment, the processing the observation value according to a preset algorithm to obtain a qualified observation value, and storing the qualified observation value in the local area includes: the inclination angle sensing chip carries out 2n +1 times of collection, wherein n is more than or equal to 1 and is an integer, and a plurality of observed values are obtained; respectively taking the gravity center of the observed value obtained by each inclination angle sensing chip to obtain a plurality of initial gravity center values; and obtaining a qualified observed value by taking the gravity center again according to the plurality of initial gravity center values.
In one embodiment, the calculating a deflection value according to the qualified observation value specifically includes: respectively obtaining an X-axis initial observation value, an X-axis current observation value, a Y-axis initial observation value and a Y-axis current observation value in the qualified observation values; according to the X-axis initial observation value, the X-axis current observation value, the Y-axis initial observation value and the Y-axis current observation value, calculating to obtain an X-axis deflection value and a Y-axis deflection value, wherein the formula is as follows:
ΔNX＝L×sin(Xi-X0)； (1)
ΔNY＝L×sin(Yi-Y0)； (2)
wherein, Δ NXIs a value of X-axis deflection, Δ NYIs the Y-axis deflection value, L is the cantilever or bridge length, XiFor the current observed value of X-axis, X0As initial observation of the X-axis, YiAs current observed value of Y-axis, Y0The initial observations are on the Y-axis.
In one embodiment, the method further comprises the following steps: acquiring a plurality of X-axis observed values and Y-axis observed values in the qualified observed values; calculating a plurality of accelerations of the observation point in the X-axis direction according to the plurality of X-axis observation values, and calculating a plurality of accelerations of the observation point in the Y-axis direction according to the plurality of Y-axis observation values, wherein the accelerations are the accelerations in the X-axis direction; acquiring an X-axis real-time acceleration curve and a Y-axis real-time acceleration curve according to the plurality of X-direction accelerations and the plurality of Y-direction accelerations; respectively extracting vibration periods and dominant frequencies of an X axis and a Y axis according to the X axis acceleration curve and the Y axis acceleration curve; and carrying out vibration analysis on the observation point according to the vibration cycles and the main frequencies of the X axis and the Y axis.
A tilt deflection monitoring system comprising: the system comprises a sensor assembly, a remote terminal controller and a power supply module; the sensor assembly is in communication connection with the remote terminal controller, and the power supply module is electrically connected with the sensor assembly and the remote terminal controller; the sensor assembly comprises 2n +1 inclination angle sensing chips which are arranged in a surrounding mode, wherein n is larger than or equal to 1 and is an integer, the 2n +1 inclination angle sensing chips form a sensing group, shafting of all the inclination angle sensing chips is kept consistent, and an observed value is obtained in real time according to the inclination angle sensing chips; the remote terminal controller acquires the observed value through Hertz level frequency, processes the observed value through an airborne algorithm to obtain a qualified observed value, and stores the qualified observed value in a local place; the remote terminal controller is also used for detecting whether the qualified observed value exceeds a preset threshold value, and if the qualified observed value does not exceed the preset threshold value, transmitting the qualified observed value to the cloud server in a time driving mode through a preset transmission frequency; and if the qualified observed value exceeds a preset threshold value, starting a long link from the remote terminal controller to the cloud server in an event-driven mode, and transmitting the real-time qualified observed value to the cloud server.
In one embodiment, the sensor assembly comprises: the sensor comprises a sensor outer shell, a sensor inner shell, a sensor main board, a mounting connecting piece, a damping pad and an aviation socket; the sensor inner shell is fixed in the sensor outer shell; the sensor main board is arranged in the sensor inner shell and sealed through epoxy resin; the mounting connecting piece is arranged at the bottom of the sensor shell and used for mounting the sensor assembly; the damping pad is used for positioning the sensor mainboard and damping; the bottom of the sensor inner shell is provided with a data interface, and the data interface is connected with the sensor main board; the top of the sensor shell is provided with a through hole, the aviation socket is connected with the data interface through the through hole, and the aviation socket is connected with the remote terminal controller.
In one embodiment, the remote terminal controller includes: the controller comprises a controller shell, a controller mainboard, a data transmission interface, an external power supply interface, a communication antenna interface and a built-in battery pack; the controller main board and the built-in battery pack are arranged in the controller shell and sealed through epoxy resin; the data transmission interface is connected with the sensor assembly, and the external power supply interface and the communication antenna interface are arranged on two sides of the controller shell.
In one embodiment, the controller board includes: the device comprises a power management module, a clock module, a communication module, an acquisition module and a processor; the clock module is used for clock calibration; the communication module is used for data transmission and comprises a remote communication unit and a local networking unit, the remote communication unit is used for data transmission with the cloud server, and the local networking unit is used for data transmission with the base station; the acquisition module is used for acquiring an observed value; the processor is used for processing the observed value to obtain a qualified observed value, and detecting and storing the qualified observed value.
In one embodiment, the method further comprises the following steps: and the remote terminal controller sends alarm information in any one or more modes of a system platform, a short message, a mail or a WeChat when detecting that the qualified observation value exceeds a preset threshold value.
An apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of a tilt deflection monitoring method as described in the various embodiments above when executing the program.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. a sensor chip set formed by surrounding 2n +1 inclination angle sensing chips is adopted, point observation in the prior art is changed into surface observation, and plane triaxial inclination observation is realized.
2. A plurality of observation values are simultaneously obtained at one observation point according to the sensor chip set, gross error identification and rejection can be carried out according to the observation values, and the reliability of observation data is improved.
3. The remote transmission mechanism of timing drive and event drive is realized, and the contradiction between low power consumption and mutation detection is compatibly solved.
Drawings
FIG. 1 is a schematic flow chart of a method for monitoring deflection of an inclination angle according to an embodiment;
FIG. 2 is a schematic diagram of an exemplary tilt deflection monitoring system;
FIG. 3 is a schematic diagram of the connection of the sensor assembly of FIG. 2 to a remote terminal controller;
FIG. 4 is a schematic top view of the sensor housing of FIG. 3;
FIG. 5 is a schematic structural diagram of the sensor main board in FIG. 3;
FIG. 6 is a schematic structural diagram of a motherboard of the controller shown in FIG. 3;
FIG. 7 is a diagram of an embodiment of a bridge deflection monitoring application scenario;
FIG. 8 is a diagram of an example of an application scenario for detecting cantilever deflection in a venue;
fig. 9 is a schematic view of the internal structure of the apparatus in one embodiment.
In the drawings, the tilt deflection monitoring system 100, the cloud server 200, the sensor assembly 10, the sensor housing 11, the through hole 111, the sensor inner housing 12, the sensor main board 13, the main board 131, the tilt sensing chip 132, the mounting connector 14, the damping pad 15, the aviation socket 16, the remote terminal controller 20, the controller housing 21, the controller main board 22, the power management module 221, the clock module 222, the communication module 223, the acquisition module 224, the processor 225, the data transmission interface 23, the external power supply interface 24, the communication antenna interface 25, the built-in battery pack 26, and the power supply module 30.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings by way of specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, as shown in fig. 1, there is provided a tilt deflection monitoring method comprising the steps of:
step S101, obtaining an observed value in real time through a plurality of sensor chip sets, wherein the sensor chip sets are arranged in a surrounding mode through 2n +1 inclination angle sensing chips, n is larger than or equal to 1 and is an integer, and shafting of all the inclination angle sensing chips is kept consistent.
Specifically, the sensor chip group can be arranged in a surrounding manner by adopting 2n +1 inclination angle sensing chips, wherein n is more than or equal to 1 and is an integer, for example, three inclination angle sensing chips are coaxially arranged in a surrounding manner, so that three initial observation values of the observation point can be obtained, the three initial observation values are processed, and a final observation value is obtained, so that the initial observation values are preliminarily screened, the observation values are subjected to gross error identification and rejection, and the reliability of observation data is ensured; and the three-axis oblique observation of the plane to be observed is realized, and the slight error of the observation device caused by vibration is reduced, so that the reliability of data is improved.
Wherein, the sensor chip group can carry out not less than three odd-number acquisition, the subsequent data processing of being convenient for.
And S102, processing the observed value according to a preset algorithm, acquiring a qualified observed value, and storing the qualified observed value in the local.
Specifically, the observation values are processed according to a preset algorithm, for example, the center of gravity of three initial observation values is taken, the data of the center of gravity point of the plane to be measured is obtained and used as the qualified observation values, so that the observation values are primarily screened and eliminated, the reliability of the data is improved, and the qualified observation values are stored locally.
Step S103, detecting whether the qualified observation value exceeds a preset threshold value.
Specifically, in order to avoid an emergency, a threshold of a qualified observation value may be preset, the qualified observation value is detected after being stored, and if the qualified observation value exceeds the threshold, a long link is started for real-time transmission, so that the management terminal is ensured to be capable of observing the state of the bridge or the cantilever in real time; if the current observation result does not exceed the threshold, stable transmission is carried out according to preset time, and by adopting the mode, a self-adaptive observation strategy can be adopted according to the current observation result, so that the requirement of low power consumption can be met while emergency can be timely dealt with.
Based on a qualified observation value sigma at a certain time, 2 times or 3 times of sigma is taken as a preset threshold, and when the qualified observation value sigma is detected to be 2 sigma or 3 sigma, the long link is started.
And step S104, if the qualified observed value does not exceed the preset threshold value, acquiring a stable observed value in a preset time period according to the qualified observed value and transmitting the stable observed value to the cloud server.
Specifically, when the qualified observation value does not exceed the preset threshold, a stable observation value within a preset time period is obtained according to the qualified observation value, for example, the qualified observation value is processed by using a bubble sorting method to obtain the stable observation value, and then the stable observation value is transmitted to the cloud server within the preset time period, for example, 1 hour or 2 hours.
Wherein, the bubbling sequencing method specifically comprises the following steps: repeatedly walking through the columns of elements to be sorted, sequentially comparing two adjacent elements, and exchanging them if the order (e.g., from large to small, with the first letter from Z to A) is wrong; the task of walking through the elements is repeated until no more neighboring elements need to be swapped, i.e., the element column has been sorted to completion. In the implementation, the sensor chip set performs odd-number collection, the bubble sorting method is adopted to obtain the median of the observed value, and the median is used as the stable observed value.
And S105, if the qualified observed value exceeds a preset threshold value, starting the long link for real-time transmission, and resolving to obtain a deflection value according to the qualified observed value.
Specifically, when the qualified observed value exceeds a preset threshold value, the cantilever or the deflection of the bridge may generate sudden change, so that a long link can be established with the cloud server, the observed value is transmitted in real time, and managers can acquire more data to process in time.
In the embodiment, observation values are obtained in real time through a plurality of sensor chip sets, the sensor chip sets are arranged in a surrounding mode by adopting 2n +1 inclination angle sensing chips, n is larger than or equal to 1 and is an integer, shafting of the inclination angle sensing chips is kept consistent, the observation values are processed by adopting a preset algorithm, qualified observation values are obtained and stored in local, and if the qualified observation values do not exceed a preset threshold value, stable observation values in a preset time period are obtained and transmitted to a cloud server; if the qualified observation value exceeds the preset threshold value, the long link is started to carry out real-time transmission, the deflection value is obtained by resolving according to the qualified observation value, gross error identification and elimination can be carried out on the observation value after observation, the reliability of the observation data is improved, timing drive data transmission and event drive real-time transmission can be realized, the requirement of low power consumption is met while emergency can be handled, and more scientific and effective deflection automatic observation is realized.
In one embodiment, step S102 specifically includes: the inclination angle sensing chip carries out 2n +1 times of collection, wherein n is more than or equal to 1 and is an integer, and a plurality of observed values are obtained; respectively taking the gravity center of the observed value obtained by each inclination angle sensing chip to obtain a plurality of initial gravity center values; and obtaining the qualified observed value by taking the gravity center again according to the plurality of preliminary gravity center values.
Specifically, in this embodiment, three tilt angle sensing chips are coaxially arranged to form a sensor chipset, the sensor chipset includes three tilt angle sensing chips, which are A, B and C respectively, data acquired at a time are a (X1, Y1, Z1), B (X2, Y2, Z2) and C (X3, Y3, Z3), the three tilt angle sensing chips perform 2n +1 times of acquisition, where n is greater than or equal to 1 and is an integer, in this embodiment, three times of data acquisition is selected, and therefore, the centers of gravity of three data acquired by the tilt angle sensing chips A, B and C are respectively taken, and a preliminary center of gravity value a is acquiredi、BiAnd Ci(ii) a A is to bei、BiAnd CiThe gravity center is taken again to obtain a qualified observed value Gi。
In one embodiment, step S104 specifically includes: respectively obtaining an X-axis initial observation value, an X-axis current observation value, a Y-axis initial observation value and a Y-axis current observation value in the qualified observation values; according to the X-axis initial observation value, the X-axis current observation value, the Y-axis initial observation value and the Y-axis current observation value, calculating to obtain an X-axis deflection value and a Y-axis deflection value, wherein the formula is as follows:
ΔNX＝L×sin(Xi-X0)； (1)
ΔNY＝L×sin(Yi-Y0)； (2)
wherein, Δ NXIs a value of X-axis deflection, Δ NYIs the Y-axis deflection value, L is the cantilever or bridge length, XiFor the current observed value of X-axis, X0As initial observation of the X-axis, YiAs current observed value of Y-axis, Y0The initial observations are on the Y-axis.
Specifically, the deflection value calculation is related to the spatial dimension of the monitored object and the stress constraint condition, the X axis can be regarded as the main axis, the Y axis can be regarded as the auxiliary axis, the Z axis can be regarded as the verification axis, after the conclusion is obtained according to the X axis and the Y axis, the verification is carried out according to the Z axis, the reliability of data is ensured, of course, any two axes of the X axis, the Y axis and the Z axis can be selected as the main axis and the auxiliary axis, wherein the main axis represents the deflection deformation of the structure, and the auxiliary axis reflects the external environmental influences such as wind vibration, sunshine and the like.
In one embodiment, further comprising: obtaining a plurality of X-axis observed values and Y-axis observed values in the qualified observed values; calculating a plurality of accelerations of the observation point in the X-axis direction according to the plurality of X-axis observation values, and calculating a plurality of accelerations of the observation point in the Y-axis direction according to the plurality of Y-axis observation values, wherein the accelerations are the accelerations in the X-axis direction; acquiring an X-axis real-time acceleration curve and a Y-axis real-time acceleration curve according to the plurality of X-direction accelerations and the plurality of Y-direction accelerations; respectively extracting vibration periods and dominant frequencies of an X axis and a Y axis according to the acceleration curve of the X axis and the acceleration curve of the Y axis; and carrying out vibration analysis on the observation point according to the vibration cycles and the main frequencies of the X axis and the Y axis.
Specifically, according to the real-time acceleration curves of the X axis and the Y axis, the vibration period and the main frequency of the X axis and the Y axis can be obtained, so that the vibration condition of the X axis and the Y axis is analyzed. In addition, the observation value of the Z axis can be obtained, and the conclusion obtained according to the data of the X axis and the Y axis can be verified, so that the reliability of the data is improved.
As shown in fig. 2, there is provided an inclination deflection monitoring system 100 comprising: a sensor assembly 10, a remote terminal controller 20, and a power supply module 30, wherein: the sensor assembly 10 is connected with the remote terminal controller 20, and the power supply module 30 is electrically connected with the sensor assembly 10 and the remote terminal controller; the sensor assembly 10 comprises 2n +1 inclination angle sensing chips which are arranged in a surrounding mode, wherein n is larger than or equal to 1 and is an integer, the 2n +1 inclination angle sensing chips form a sensing group, shafting of all the inclination angle sensing chips is kept consistent, and an observed value is obtained in real time according to the inclination angle sensing chips; the remote terminal controller 20 acquires an observed value through the Hertz level frequency, processes the observed value through an airborne algorithm to obtain a qualified observed value, and stores the qualified observed value locally; the remote terminal controller 20 is further configured to detect whether the qualified observed value exceeds a preset threshold, and transmit the qualified observed value to the cloud server 200 in a time-driven manner through a preset transmission frequency if the qualified observed value does not exceed the preset threshold; and if the qualified observed value exceeds the preset threshold value, starting a long link from the remote terminal controller 20 to the cloud server 200 in an event-driven manner, and transmitting the real-time qualified observed value to the cloud server 200.
In the embodiment, the sensor assembly 10 is connected with the remote terminal controller 20 through the sensor assembly 10, the power supply module 30 is used for supplying power to the sensor assembly 10 and the remote terminal controller 20, the sensor assembly 10 includes 2n +1 tilt angle sensing chips arranged around the sensor assembly, the axes of the tilt angle sensing chips are consistent, the observation value is obtained in real time through the tilt angle sensing chips, the observation value is processed by the remote terminal controller 20 to obtain a qualified observation value, the qualified observation value is stored and is connected with the cloud server 200 in a communication manner, the qualified observation value is transmitted to the cloud server within a preset time period, or the qualified observation value is transmitted to the cloud server 200 in real time when the qualified observation value is detected to exceed a preset threshold value, 2n +1 observation values on a plane to be detected are obtained by coaxially surrounding the 2n +1 tilt angle sensing chips, and fine errors caused by device vibration are reduced, and a qualified observation value is obtained according to the observation value, gross error identification and elimination of observation data are realized, the reliability of the observation data is improved, and the requirement on low power consumption is realized while sudden change events are processed.
As shown in fig. 3 to 5, the sensor assembly 10 includes: the sensor comprises a sensor outer shell 11, a sensor inner shell 12, a sensor main board 13, a mounting connecting piece 14, a damping pad 15 and an aviation socket 16; the sensor inner shell 12 is fixed in the sensor outer shell 11; the sensor main board 13 is arranged in the sensor inner shell 12 and sealed by epoxy resin; the mounting connector 14 is arranged at the bottom of the sensor shell 11 and is used for mounting the sensor assembly 10; the damping pad 15 is used for positioning the sensor main board 13 and damping; the bottom of the sensor inner shell 12 is provided with a data interface, and the data interface is connected with a sensor main board 13; the top of the sensor shell 11 is provided with a through hole 111, the aviation socket 16 is connected with the data interface through the through hole 111, and the aviation socket 16 is connected with the remote terminal controller 20.
The sensor shell 11 is an integrated aluminum shell, a cavity and a bottom cover are milled from whole aluminum, and the bottom cover and the cavity are fixed by countersunk screws.
Specifically, the shafting of the sensor shell 11 and the sensor mainboard 13 is kept consistent, so that the field installation and use are facilitated, and meanwhile, the physical characterization analysis of the monitoring result is utilized.
Wherein, the sensor main board 13 includes: the main board 131 and 2n +1 tilt angle sensing chips 132, and 2n +1 tilt angle sensing chips 132 are disposed around the main board 131.
Specifically, n is equal to 1, that is, three inclination angle sensing chips are arranged on the main board in a surrounding manner, and shafting of the three inclination angle sensing chips is kept consistent, so that multiple groups of samples can be obtained, and the reliability of observation data is improved; and the breakthrough of the traditional scattered point oblique observation to the planar oblique observation is realized, and the state of an observation object is reflected more scientifically.
Wherein, three piece damping gaskets 15 have been arranged between sensor mainboard 13 and the sensor housing 11 bottom, realize the adjustment of sensor mainboard levelness, avoid sensor mainboard 13 not hard up to produce simultaneously and observe the noise.
In this embodiment, the sensor motherboard 13 is sealed with epoxy resin, so that the stability of the observation environment of the tilt angle sensing chip 132 can be maintained, and the reliability of the observation data can be improved; and the integral protection level of the sensor assembly 10 can be improved, and the device is more suitable for the field high-low temperature surface humidity and heat observation environment.
Wherein, the mounting connecting piece 14 is made of stainless steel.
Wherein, the remote terminal controller 20 includes: a controller housing 21, a controller main board 22, a data transmission interface 23, an external power supply interface 24, a communication antenna interface 25 and a built-in battery pack 26; the controller main board 22 and the built-in battery pack 26 are disposed inside the controller case 21 and sealed by epoxy resin; the data transmission interface 23 is connected with the sensor assembly 10, and is arranged on both sides of the controller shell 21 together with the external power supply interface 24 and the communication antenna interface 25.
Specifically, the remote terminal controller 20 adopts a design principle of miniaturization, multi-interface use and high protection, can meet various application scenes, and is suitable for severe field environments.
Specifically, the acquisition policy of the remote terminal controller 20 is: the default collection sample is that 3 inclination angle sensing chips respectively collect three times of obtained samples, namely 3 x3, and of course, (2n +1) × (2n +1) is also supported; hertz-level high-frequency scanning can be carried out, gross errors are removed, and local storage is carried out; the observation values can be transmitted to the cloud server 200 at regular time or in real time in an emergency.
The emergency situation refers to that an observation value detects sudden change, the sudden change evaluation is based on a qualified observation value sigma in the sensor assembly 10, 2 or 3 times of the qualified observation value sigma is taken as a threshold, and when the sum and the qualified observation value exceed the threshold, a long link is established between the remote terminal controller 20 and the cloud server, so that real-time monitoring is achieved.
Specifically, the remote terminal controller 20 supports bidirectional control, and can configure acquisition policies, IPs, and ports in a downstream manner through the cloud server 200, while supporting multi-channel transmission. Wherein, the uplink transmission data comprises: electric quantity, signal strength, triaxial/biaxial gravitational acceleration, triaxial/biaxial angle, mainboard temperature and the like.
As shown in fig. 6, the controller main board 22 includes: a power management module 221, a clock module 222, a communication module 223, an acquisition module 224 and a processor 225; the power management module 221 is used for managing power; the clock module 222 is used for clock calibration; the communication module 223 is used for data transmission, and includes a remote communication unit and a local networking unit, the remote communication unit is used for data transmission with the cloud server 200, and the local networking unit is used for data transmission with a base station; the acquisition module 224 is used for acquiring acquisition data; and the processor 225 is configured to process the observation value to obtain a qualified observation value, and detect and store the qualified observation value.
The external power supply interface 24 supports solar power supply, and the power management module 221 implements compatible management of internal power supply and external power supply.
Wherein, the system still includes: and in the alarm module, the remote terminal controller 20 sends alarm information in any one or more modes of a system platform, short messages, mails or WeChat when detecting that the qualified observation value exceeds the range of the preset threshold value.
Specifically, the preset threshold value is based on a qualified observation value sigma at a certain moment, 2 times or 3 times of errors of the qualified observation value sigma are taken as the threshold value, when the qualified observation value exceeds the threshold value, the remote terminal controller 20 establishes a long link with the cloud server 200 to realize real-time monitoring, and sends alarm information through an alarm module in any one or more modes of a system platform, a short message, a mail or a WeChat to realize real-time acquisition, dynamic monitoring and visualization of observation data, and an alarm closed loop is established based on monitoring results.
Specifically, the alarm closed loop refers to an alarm and feedback mechanism for establishing a cloud application platform, a project responsible person, a competent department and a cloud application platform for monitoring; the closed loop is clear in pointing, the process can be traced, and the alarm mode is system platform alarm, short message alarm, mail alarm and WeChat alarm. And the responsible person and the administrative department verify the field condition and feed back the treatment measures after receiving the police.
In one embodiment, as shown in fig. 7, a schematic view of a scenario of bridge deflection monitoring is provided, in which a sensor assembly 10 and a remote terminal controller 20 are spaced at the bottom of a bridge deck, so as to facilitate data transmission between the sensor assembly 10 and the remote terminal controller 20; the sensor assembly 30 can acquire the three-axis coordinate data of the installation part, and the deflection change of the bridge is calculated according to the variation of the three-axis coordinate data, so that the deformation degree of the bridge is judged.
In one embodiment, as shown in fig. 8, a scene diagram of the venue cantilever deflection monitoring is shown, a sensor assembly 10 and a remote terminal controller 20 are arranged on a cantilever beam at intervals, one sensor assembly 10 is arranged in the middle of the cantilever, and the other sensor assembly 10 is arranged at the end of the cantilever, so that the cantilever deformation quantity can be conveniently obtained.
The system is suitable for monitoring the deflection of the flexural members such as overhanging buildings, structures or bridges, can measure physical parameters such as gravitational acceleration, inclination angle and temperature through the inclination angle sensing chip, calculates and obtains the structural deflection, vibration frequency and amplitude on the basis of environmental temperature compensation, and serves the safe operation management work of the buildings, the structures and the bridges.
In one embodiment, a device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 9. The device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the device is configured to provide computing and control capabilities. The memory of the device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the device is used for storing configuration templates and also can be used for storing target webpage data. The network interface of the device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a tilt deflection monitoring method.
Those skilled in the art will appreciate that the configuration shown in fig. 9 is a block diagram of only a portion of the configuration associated with the present application and does not constitute a limitation on the devices to which the present application applies, and that a particular device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, there is also provided a storage medium storing a computer program comprising program instructions which, when executed by a computer, which may be part of a tilt deflection monitoring system of the kind mentioned above, cause the computer to perform the method of the preceding embodiment.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
It will be apparent to those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device or distributed across a network of computing devices, and optionally they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disks, optical disks) and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A method for monitoring deflection of an inclination angle is characterized by comprising the following steps:
the method comprises the steps that observed values are obtained in real time through a plurality of sensor chip sets, the sensor chip sets are arranged in a surrounding mode through 2n +1 inclination angle sensors, n is not less than 1 and is an integer, and shafting of the inclination angle sensors is kept consistent;
processing the observed value according to a preset algorithm to obtain a qualified observed value, and storing the qualified observed value in a local place;
detecting whether the qualified observed value exceeds a preset threshold value;
if the qualified observation value does not exceed a preset threshold value, acquiring a stable observation value within a preset time period according to the qualified observation value and transmitting the stable observation value to a cloud server;
and if the qualified observed value exceeds a preset threshold value, starting the long link for real-time transmission, and resolving according to the qualified observed value to obtain a deflection value.
2. The method for monitoring deflection of an inclination angle according to claim 1, wherein the processing the observed value according to a preset algorithm to obtain a qualified observed value, and storing the qualified observed value locally comprises:
the tilt sensor carries out 2n +1 times of collection, wherein n is not less than 1 and is an integer, and a plurality of observed values are obtained;
respectively taking the gravity center of the observed value obtained by each tilt angle sensor to obtain a plurality of initial gravity center values;
and obtaining a qualified observed value by taking the gravity center again according to the plurality of initial gravity center values.
3. The method for monitoring the deflection of the inclination angle according to claim 1, wherein the step of calculating the deflection value according to the qualified observed value specifically comprises the following steps:
respectively obtaining an X-axis initial observation value, an X-axis current observation value, a Y-axis initial observation value and a Y-axis current observation value in the qualified observation values;
according to the X-axis initial observation value, the X-axis current observation value, the Y-axis initial observation value and the Y-axis current observation value, calculating to obtain an X-axis deflection value and a Y-axis deflection value, wherein the formula is as follows:
ΔNX＝L×sin(Xi-X0)； (1)
ΔNY＝L×sin(Yi-Y0)； (2)
wherein, Δ NXIs a value of X-axis deflection, Δ NYIs the Y-axis deflection value, L is the cantilever or bridge length, XiFor the current observed value of X-axis, X0As initial observation of the X-axis, YiAs current observed value of Y-axis, Y0The initial observations are on the Y-axis.
4. The method of monitoring deflection of an angle of inclination of claim 1, further comprising:
acquiring a plurality of X-axis observed values and Y-axis observed values in the qualified observed values;
calculating a plurality of accelerations of the observation point in the X-axis direction according to the plurality of X-axis observation values, and calculating a plurality of accelerations of the observation point in the Y-axis direction according to the plurality of Y-axis observation values, wherein the accelerations are the accelerations in the X-axis direction;
acquiring an X-axis real-time acceleration curve and a Y-axis real-time acceleration curve according to the plurality of X-direction accelerations and the plurality of Y-direction accelerations;
respectively extracting vibration periods and dominant frequencies of an X axis and a Y axis according to the X axis acceleration curve and the Y axis acceleration curve;
and carrying out vibration analysis on the observation point according to the vibration cycles and the main frequencies of the X axis and the Y axis.
5. An inclination deflection monitoring system, comprising: an inclination deflection monitoring system, comprising: the system comprises a sensor assembly, a remote terminal controller and a power supply module; the sensor assembly is in communication connection with the remote terminal controller, and the power supply module is electrically connected with the sensor assembly and the remote terminal controller; the sensor assembly comprises 2n +1 inclination angle sensing chips which are arranged in a surrounding mode, wherein n is larger than or equal to 1 and is an integer, the 2n +1 inclination angle sensing chips form a sensing group, shafting of each sensing chip is kept consistent, and an observed value is obtained in real time according to the inclination angle sensing chips; the remote terminal controller acquires the observed value through Hertz level frequency, processes the observed value through an airborne algorithm to obtain a qualified observed value, and stores the qualified observed value in a local place; the remote terminal controller is also used for detecting whether the qualified observed value exceeds a preset threshold value, and if the qualified observed value does not exceed the preset threshold value, transmitting the qualified observed value to the cloud server in a time driving mode through a preset transmission frequency; and if the qualified observed value exceeds a preset threshold value, starting a long link from the remote terminal controller to the cloud server in an event-driven mode, and transmitting the real-time qualified observed value to the cloud server.
6. The tilt deflection monitoring system of claim 5 wherein the sensor assembly comprises: the sensor comprises a sensor outer shell, a sensor inner shell, a sensor main board, a mounting connecting piece, a damping pad and an aviation socket; the sensor inner shell is fixed in the sensor outer shell; the sensor main board is arranged in the sensor inner shell and sealed through epoxy resin; the mounting connecting piece is arranged at the bottom of the sensor shell and used for mounting the sensor assembly; the damping pad is used for positioning the sensor mainboard and damping; the bottom of the sensor inner shell is provided with a data interface, and the data interface is connected with the sensor main board; the top of the sensor shell is provided with a through hole, the aviation socket is connected with the data interface through the through hole, and the aviation socket is connected with the remote terminal controller.
7. The tilt deflection monitoring system of claim 5, wherein the remote terminal controller comprises: the controller comprises a controller shell, a controller mainboard, a data transmission interface, an external power supply interface, a communication antenna interface and a built-in battery pack; the controller main board and the built-in battery pack are arranged in the controller shell and sealed through epoxy resin; the data transmission interface is connected with the sensor assembly, and the external power supply interface and the communication antenna interface are arranged on two sides of the controller shell.
8. The tilt deflection monitoring system of claim 7, wherein the controller board includes: the device comprises a power management module, a clock module, a communication module, an acquisition module and a processor; the clock module is used for clock calibration; the communication module is used for data transmission and comprises a remote communication unit and a local networking unit, the remote communication unit is used for data transmission with the cloud server, and the local networking unit is used for data transmission with the base station; the acquisition module is used for acquiring an observed value; the processor is used for processing the observed value to obtain a qualified observed value, and detecting and storing the qualified observed value.
9. The tilt deflection monitoring system of claim 7, further comprising: and the remote terminal controller sends alarm information in any one or more modes of a system platform, a short message, a mail or a WeChat when detecting that the qualified observation value exceeds a preset threshold value.
10. An apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 4 are implemented when the computer program is executed by the processor.
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| CN202011621786.0A CN112611347B (en) | 2020-12-30 | Inclination angle deflection monitoring method, system and equipment |
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| CN202011621786.0A CN112611347B (en) | 2020-12-30 | Inclination angle deflection monitoring method, system and equipment |
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