Crack monitoring devices, methods, processing devices and storage media

Abstract

The crack monitoring device, method, processing device, and storage medium of this application include: a first fixing member and a second fixing member, respectively fixedly disposed on both sides of a crack; the first fixing member has a first outer surface, and the first outer surface is provided with a shaft portion; the second fixing member has a second outer surface; the second outer surface is provided with a support portion, and the support portion has a support surface on the side facing the first fixing member; a monitoring component, connected to the shaft portion and capable of rotating around it, and the monitoring component is provided to overlap the support surface so as to move along the support surface as the distance between the first fixing member and the second fixing member changes; wherein, the monitoring component includes: a circuit system; the circuit system includes: a tilt sensing module for collecting rotation angle data of the monitoring component; wherein, the rotation angle data is used to monitor the width change of the crack; the device has a simple and compact structure, and is convenient for automated detection, effectively solving the problems of the prior art.

Description

Technical Field

[0001] This application relates to the field of intelligent monitoring technology, and in particular to crack monitoring devices, methods, processing devices and storage media. Background Technology

[0002] Over time, cracks will appear in buildings, rock formations, dams, roads, cultural relics, and other structures for various reasons. For safety and other reasons, it is often necessary to observe these cracks.

[0003] Current observation methods typically employ vibrating wire crack gauges, installed on the surface of the object being inspected. They measure the size of cracks by measuring the opening (deformation) of structural expansion joints or perimeter joints. A typical crack gauge consists of front and rear supports, a protective steel pipe, an elastic beam, a signal transmission cable, a vibrating wire, and an excitation electromagnetic coil. Deformation of the structure is transmitted through the front and rear supports to a conversion mechanism, causing stress changes in the vibrating wire and altering its vibration frequency. The electromagnetic coil excites the vibrating wire and measures its frequency. This frequency signal is transmitted via cable to an external frequency reader, where the frequency is then calculated to determine the amount of crack change in the measured structure.

[0004] The existing product measurement technology has the following problems:

[0005] 1) Large in size and has a certain weight;

[0006] 2) The complex structure and installation, along with the quasi-rigid connection at both ends of the crack gauge, reduce the sensitivity of crack detection;

[0007] 3) The mechanical zero-position error is relatively large; dirt and corrosion from the environment can cause serious measurement errors;

[0008] 4) It has a cable and uses a frequency reader, which is not convenient for automated data acquisition.

[0009] If the product is used on structures under construction, dams, or roads, its current disadvantages are only high cost and difficulty in achieving automated data collection; if used on existing buildings, its large size, large installation space, and inability to be automatically monitored become unacceptable.

[0010] Therefore, finding a crack monitoring device that is simple in structure, compact in size, and reliable has become a pressing technical problem for the industry. Summary of the Invention

[0011] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a crack monitoring device, method, processing device and storage medium to solve the problems of large size, large installation space and poor automation of crack detection instruments in the prior art.

[0012] To achieve the above and other related objectives, this application provides a crack monitoring device, comprising: a first fixing member and a second fixing member, respectively fixedly disposed on both sides of a crack; the first fixing member having a first outer surface, the first outer surface having a shaft portion; the second fixing member having a second outer surface; the second outer surface having a support portion, the support portion having a support surface on the side facing the first fixing member; a monitoring component connected to the shaft portion and capable of rotating around it, and the monitoring component being attached to the support surface to move along the support surface as the distance between the first and second fixing members changes; wherein, the monitoring component includes: a circuit system; the circuit system includes: a tilt sensing module for collecting rotation angle data of the monitoring component; wherein, the rotation angle data is used to monitor the width change of the crack.

[0013] In one or more embodiments of this application, the support surface is an inclined surface or a curved surface.

[0014] In one or more embodiments of this application, the monitoring component and the shaft are magnetically connected.

[0015] In one or more embodiments of this application, the circuit system includes: a control module electrically connected to and controlling the tilt sensing module.

[0016] In one or more embodiments of this application, the control module is used to calculate the crack width change data based on the geometric model of the mechanical structure of the crack monitoring device and the change of the geometric model caused by the mechanical motion corresponding to the rotation angle data.

[0017] In one or more embodiments of this application, the communication module includes: a wireless communication circuit; the wireless communication circuit includes any one or more circuits selected from GPRS, 4G / 5G, WiFi, NB-IoT, Zigbee, and LoRa.

[0018] In one or more embodiments of this application, the circuit system includes: a temperature sensing module for acquiring temperature data.

[0019] In one or more embodiments of this application, the circuit system includes a GNSS module.

[0020] In one or more embodiments of this application, the circuit system includes: a storage module for temporarily storing rotation angle data that could not be sent due to an interruption in communication with the outside world.

[0021] In one or more embodiments of this application, the monitoring component is provided with a battery for powering the circuit system.

[0022] In one or more embodiments of this application, the battery is disposable.

[0023] To achieve the above and other related objectives, this application provides a crack monitoring method, applied to a processing device that is communicatively connected to or integrated into the crack monitoring device. The method includes: acquiring the rotation angle data; and calculating the crack width variation data based on the geometric model of the mechanical structure of the crack monitoring device and the change in the geometric model caused by the mechanical motion corresponding to the rotation angle data.

[0024] To achieve the above and other related objectives, this application provides a processing apparatus, comprising: one or more communicators for communicating with an external source; one or more memories for storing a computer program; and one or more processors for running the computer program to execute the crack monitoring method.

[0025] To achieve the above and other related objectives, this application provides a computer-readable storage medium storing a computer program, which, when run, executes the crack monitoring method described above.

[0026] As described above, the crack monitoring device, method, processing device, and storage medium of this application include: a first fixing member and a second fixing member, respectively fixedly disposed on both sides of a crack; the first fixing member has a first outer surface, and the first outer surface is provided with a shaft portion; the second fixing member has a second outer surface; the second outer surface is provided with a support portion, and the support portion has a support surface on the side facing the first fixing member; a monitoring component, connected to the shaft portion and capable of rotating around it, and the monitoring component is provided to overlap the support surface so as to move along the support surface as the distance between the first fixing member and the second fixing member changes; wherein, the monitoring component includes: a circuit system; the circuit system includes: a tilt sensing module for collecting the rotation angle data of the monitoring component; wherein, the rotation angle data is used to monitor the width change of the crack; the device has a simple and compact structure, and is convenient for automated detection, effectively solving the problems of the prior art. Attached Figure Description

[0027] Figure 1A The diagram shown is a structural schematic of the crack monitoring device in an embodiment of this application.

[0028] Figure 1B The diagram shown is a structural schematic of a crack monitoring device in another embodiment of this application.

[0029] Figure 1C The diagram shown is a structural schematic of a crack monitoring device in another embodiment of this application.

[0030] Figure 2 The diagram shown is a schematic diagram of the circuit structure of the monitoring component in an embodiment of this application.

[0031] Figure 3 The diagram shown is a flowchart of the crack monitoring method in an embodiment of this application.

[0032] Figure 4 The diagram shown is a schematic diagram of the circuit structure of the processing device in an embodiment of this application. Detailed Implementation

[0033] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0034] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0035] To clearly illustrate this application, circuit components unrelated to the description are omitted, and the same or similar constituent elements throughout the specification are given the same reference numerals.

[0036] Throughout this specification, when it is said that a circuit component is "connected" to another circuit component, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a circuit component "includes" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0037] When we say that a circuit component is "above" another circuit component, this can mean that it is directly above the other circuit component, or it can mean that other circuit components are present in between. Conversely, when we say that a circuit component is "directly" "above" another circuit component, there are no other circuit components present in between.

[0038] Although the terms first, second, etc., are used in some instances herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, descriptions such as first interface and second interface, etc. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0039] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this application. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in the specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0040] Terms indicating relative space, such as "below" and "above," are used to more easily explain the relationship of one circuit component relative to another circuit component illustrated in the accompanying drawings. These terms refer not only to their meaning as shown in the drawings but also to other meanings or operations of the device in use. For example, if the device in the drawings is rotated, a circuit component previously described as "below" another circuit component will now be described as "above" another circuit component. Therefore, the exemplary term "below" encompasses both above and below. The device may be rotated 90° or other angles, and the terms representing relative space are interpreted accordingly.

[0041] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the content of this present application, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0042] Cracks can exist in various buildings and natural objects, such as houses, bridges, tunnels, and rock formations. These cracks can be vertical cracks extending longitudinally on a wall facade, horizontal cracks extending laterally on a wall facade, cracks in the ground, or cracks on any other plane.

[0043] Monitoring cracks mainly involves observing changes in crack width, such as crack widening or narrowing.

[0044] Given that existing crack detection devices mainly suffer from problems such as large size, complex structure, and low degree of automation, this application provides a crack monitoring device that can solve these problems.

[0045] The following illustrations will illustrate this point.

[0046] like Figure 1A The diagram shown illustrates the structure of the crack monitoring device 100 in this embodiment of the application.

[0047] As shown in the figure, the crack monitoring device 100 includes: a first fixing member 101, a second fixing member 102, and a monitoring component 103.

[0048] The first fixing member 101 and the second fixing member 102 are respectively fixedly disposed on both sides of the crack 104. In this embodiment, the crack can be a vertical crack; of course, in other embodiments, the form of the crack can be completely varied and is not limited thereto.

[0049] In possible implementations, the first fastener 101 and the second fastener 102 can be plate-shaped, block-shaped, strip-shaped, or other shapes. Although they are shown as plate-shaped in the figure, this is only a graphic illustration and not a limitation thereof. Assuming that the crack 104 is located on the wall, the first fastener 101 and the second fastener 102 can be directly fixed to the wall by means of riveting, for example, or they can be fixed to the bracket fixed to the wall by means of welding, riveting, or bonding, for example.

[0050] The first fastener 101 has a first outer surface 111; the second fastener 102 has a second outer surface 121.

[0051] In this embodiment, the first outer surface 111 is the back side of the fixing surface of the first fastener 101 for fixing to the surface where the crack 104 is located. Specifically, if the inward side of the first fastener 101 in the figure is for fixing to the surface where the crack 104 is located (e.g., a wall), then the opposite outward side is the first outer surface 111.

[0052] Similarly, the first outer surface 111 is the back side of the fixing surface of the first fastener 101 for fixing to the surface where the crack 104 is located. Specifically, if the inward side of the first fastener 101 in the figure is for fixing to the surface where the crack 104 is located (e.g., the wall), then the opposite outward side is the first outer surface 111.

[0053] Optionally, in this embodiment, the first outer surface 111 and the second outer surface 121 can be parallel; preferably, the first outer surface 111 and the second outer surface 121 are flush, so as to facilitate the setting and cooperation of the monitoring component 103 and the support 122.

[0054] The first outer surface 111 is provided with a shaft portion 112, and the monitoring component 103 is connected to the shaft portion 112 and can rotate around it.

[0055] In possible implementations, the shaft portion 112 can be a cylindrical shaft or a shaft hole. In this embodiment, the shaft portion 112 is in the form of a shaft, and correspondingly, the monitoring component 103 can be provided with a hole portion that fits into the shaft portion 112; of course, the connection between the monitoring component 103 and the shaft portion 112 does not necessarily need to be fitted together, as long as there is a limiting force between them.

[0056] In a preferred embodiment, the shaft portion 112 and the monitoring component 103 can be connected by magnetic attraction; for example, the shaft portion 112 is a magnet, and the monitoring component 103 is provided with a metal that attracts the shaft portion 112; or, the monitoring component 103 is provided with a magnet, and the shaft portion 112 is a metal or magnet that attracts the magnet; wherein, the metal or magnet on the monitoring component 103 can be fixed by means of welding, screwing, or bonding, or can be used as part of the housing of the monitoring component 103 (for example, the housing itself is made of a magnetically attractive metal material).

[0057] By using magnetic attraction to restrict the connection between the shaft 112 and the monitoring component 103, it is no longer necessary to restrict their relative positions through structure, such as eliminating the need for a shaft hole and shaft post sleeve structure.

[0058] Optionally, the monitoring component 103 may be connected to the shaft 112 at one end, or other parts of the monitoring component 103 may be connected to the shaft 112, as long as the monitoring component 103 can rotate around the shaft 112.

[0059] The second outer surface 121 is provided with a support portion 122. In this embodiment, the support portion 122 may be a protrusion protruding from the second outer surface 121. The support portion 122 has a support surface 1221 on the side facing the first fixing member 101, and the support surface 1221 is for the end of the monitoring component 103 closer to it to overlap.

[0060] In possible implementations, the support surface 1221 can be an inclined surface or a curved surface; Figure 1A In one embodiment, the support surface 1221 is an inclined surface, which is beneficial for the subsequent calculation of the width of the crack 104, rather than being a limitation thereof.

[0061] The monitoring component 103 can rotate around the shaft 112, and one end of it is attached to the support surface 1221. The change in the width of the crack 104 will cause the distance between the first fixing member 101 and the second fixing member 102 to change. If the monitoring component 103 is always attached to the support surface 1221, the monitoring component 103 will move along the support surface 1221.

[0062] exist Figure 1A In this embodiment, the crack 104 extends longitudinally. Therefore, if the crack 104 widens, the distance between the first fixing member 101 and the second fixing member 102 will increase, and the support surface 1221 will also widen. Figure 1A When the position of the solid line changes to the position of the dashed line, the monitoring component 103 will rotate downward around the axis 112 under the action of gravity, and the end of it that is attached to the support surface 1221 will also move downward along the support surface 1221.

[0063] The monitoring component 103 can monitor the crack 104 by collecting its rotation angle data. Figure 1A In this embodiment, the monitoring component 103 collects rotation angle data of its upward rotation angle.

[0064] Conversely, when the crack 104 shrinks, the distance between the first fixing member 101 and the second fixing member 102 decreases, and the monitoring component 103 rotates upward, so that the rotation angle data of its upward rotation can be collected.

[0065] As can be seen, the change in the rotation angle data corresponds to the change in crack width, so the change in crack width can be monitored by collecting and monitoring the change in rotation angle data.

[0066] Figure 1A The image shows the application of the crack monitoring device of this application in the scenario of monitoring vertical cracks on a facade. However, the crack monitoring device of this application can also be applied to the scenario of monitoring other types of cracks.

[0067] For example, such as Figure 1BThe diagram shown illustrates the structure of a crack monitoring device according to another embodiment of this application.

[0068] In this embodiment, the crack 104B can be a horizontal crack on the vertical surface.

[0069] In this embodiment, the first fixing member 101B and the second fixing member 102B of the crack monitoring device 100B are respectively located on both sides of the crack, that is, on the upper and lower sides of the transverse crack.

[0070] When crack 104B expands, the distance between the first fixing member 101B and the second fixing member 102B increases, and the monitoring component 103B of the support part 122B and its support surface 1221B rotates downward (i.e., rotates counterclockwise in the figure). The monitoring component 103B can collect the rotation angle data of its downward rotation. Conversely, in other embodiments, when crack 104B shrinks, the distance between the first fixing member 101B and the second fixing member 102B shrinks, and the monitoring component 103B rotates upward (i.e., rotates clockwise in the figure). The monitoring component 103B can collect the rotation angle data of its upward rotation.

[0071] It should be noted that the vertical and horizontal seams in the above embodiments do not mean that the cracks must extend in a vertical or horizontal direction, but rather that they extend approximately in a longitudinal or transverse direction.

[0072] For example Figure 1C The diagram shown illustrates the structure of a crack monitoring device according to another embodiment of this application.

[0073] In this embodiment, the crack 104C may be located on a horizontal surface such as the ground (e.g., the surface of a bridge or road) or a building floor.

[0074] In this embodiment, the first fixing member 101C and the second fixing member 102C of the crack monitoring device 100C are respectively disposed on both sides of the crack 101C, that is, on the left and right sides of the crack 104C respectively. The first outer surface and the second outer surface can be opposing surfaces disposed on the surface where the crack 104C is located.

[0075] The monitoring component 103C, which is connected to the shaft on the first outer surface, extends toward the second outer surface and overlaps the support surface 1221C of the support portion 122C provided on the second outer surface. The support surface 1221C is disposed toward the monitoring component 103C.

[0076] When crack 104C expands, the distance between the first fixing member 101C and the second fixing member 102C increases, and the monitoring component 103C rotates downward (i.e., rotates clockwise in the figure). The monitoring component 103C can collect the rotation angle data of its downward rotation. Conversely, when crack 104C shrinks, the distance between the first fixing member 101C and the second fixing member 102C shrinks, and the monitoring component 103C rotates upward (i.e., rotates counterclockwise in the figure). The monitoring component 103C can collect the rotation angle data of its upward rotation.

[0077] It should be noted that the support portions in the above embodiments are simplified in the illustrations only to show the function of their supporting surfaces, and not to limit their structure. In reality, the structure of the support portion can be of various shapes.

[0078] Accordingly, in the above embodiments, the monitoring component has a circuit system for at least realizing the function of acquiring rotation angle data.

[0079] like Figure 2 As shown, the circuit system includes:

[0080] The tilt sensing module 201 is used to collect the rotation angle data of the monitoring component 200.

[0081] In a possible implementation, the tilt sensing module 201 includes a tilt sensor (e.g., a multi-axis accelerometer) for tilt angle measurement. It is located on the monitoring component 200 to collect rotation angle data during the rotation of the monitoring component 200.

[0082] Optionally, in some embodiments, the circuit system may further include a communication module 202 for communicating with the outside.

[0083] In a preferred embodiment, the communication module 202 includes a wireless communication circuit. Since the crack monitoring device can be installed in facilities such as bridges, tunnels, and buildings, wired communication would require laying communication cables or optical fibers, which is inconvenient for construction. Wireless communication effectively solves this problem.

[0084] In possible implementations, the wireless communication circuit includes any one or more of GPRS, 4G / 5G, WiFi, NB-IoT, Zigbee, and LoRa; the wireless communication circuit is electrically connected to an antenna to realize the transmission and reception of wireless signals (such as radio frequency signals).

[0085] In one or more embodiments, the communication module 202 can communicate with external devices by accessing a communication network to transmit the rotation angle data. The external devices include servers, desktop computers, mobile terminals (such as smartphones, tablets, etc.) or other communication devices. The communication network can be a local area network or a wide area network, such as the Internet, 2G / 3G / 4G / 5G mobile communication networks, Internet of Things sensor networks, etc.

[0086] In this embodiment, the circuit system may further include a control module 203, which is electrically connected to the communication module 202 and the tilt sensing module 201, and is used to perform control functions to achieve, for example, acquiring the collected rotation angle data from the tilt sensing module 201 and then controlling the communication module 202 to send it outward; or, calculating the crack width change data based on the collected rotation angle data and then sending it outward through the communication module 202.

[0087] The crack width variation data can be calculated based on the geometric model of the mechanical structure of the crack monitoring device and the changes in the geometric model caused by the mechanical motion corresponding to the rotation angle data.

[0088] by Figure 1A The following example illustrates the principle of calculating crack width variation data.

[0089] Assume the monitoring component is approximately the shape of a line with a length of L and an initial crack width of S0;

[0090] according to Figure 1A In the geometric model shown, when the crack width increases by S, the distance between the monitoring component installed on both sides of the crack and the support surface and shaft increases by S. At this time, the monitoring component slides downward from point A along the support surface to point B. Correspondingly, the monitoring component rotates around the shaft by an angle of ∠AOB.

[0091] The extension of the bottom outline OA of the wireless crack monitoring device intersects the parallel line of the bracket at point P, with an angle of ∠OPB.

[0092] According to trigonometric relationships: the length L of line segment AB AB = 2 * L * Sin(∠AOB / 2)

[0093] According to the trigonometric function relationship: S / Sin(∠PBA)=LAB / Sin(∠OPB);

[0094] ∠PBA = 180° - ∠AOB - ∠OPB;

[0095] S=LAB*Sin(∠PBA) / Sin(∠OPB);

[0096] S=2*L*Sin(∠AOB / 2)*Sin(180-∠AOB-∠OPB); From this, we can obtain the initial intersection angle with the support and the change angle after the crack expands, and then calculate the crack expansion width S.

[0097] For ease of calculation, optionally, the wireless crack monitoring device can be installed horizontally during installation, assuming the initial installation angle is zero. The extension of the bottom outline OA forms a 45° angle with the bracket, i.e., ∠OPB=45°. Thus, the formula simplifies to: S=2*L*Sin(LAOB / 2)*Sin(135°-LAOB). Of course, these are just examples. In actual situations, parameters can be set arbitrarily, as long as they are known, and the calculation can be obtained without being limited to the example angles mentioned above; the only difference lies in the amount of calculation.

[0098] In addition, for ease of calculation, the support surface is set as an inclined surface in this embodiment, which is beneficial for the calculation of trigonometric functions; of course, in other embodiments, the support surface can also be a curved surface, and is not limited to this embodiment.

[0099] It should be noted that in some embodiments, the width change data may not be the precise amount of change, but rather information about the width change itself. For example, according to... Figures 1A to 1C As can be seen from the embodiments, by monitoring the rotation angle data of the components in different directions, it is possible to know whether the crack width is expanding or shrinking, and simple monitoring of crack width changes can also be achieved.

[0100] It should be noted that in other embodiments, when the data to be sent is the rotation angle data, if the tilt sensor module can directly communicate with the communication module 202 without the need for data protocol conversion and can trigger the communication module 202 to send data, then the control module 203 may not be necessary, and it is not limited to the above embodiments.

[0101] Optionally, the circuit system further includes a GNSS module 204, which can be electrically connected to the control module 203 to provide geographic location data and clock data; the GNSS module 204 is connected to an antenna to acquire data.

[0102] It should be noted that the wireless communication circuit of the communication module 202 (e.g., WiFi, 2G / 3G / 4G / 5G module) is connected to an external communication network (such as the Internet) and can obtain time synchronization, that is, it can also acquire clock data.

[0103] Optionally, the circuit system further includes a temperature sensing module 205 for collecting temperature data.

[0104] In a possible implementation, the temperature sensing module 205 may include one or more temperature sensors or temperature and humidity sensors, etc., for collecting temperature data.

[0105] Furthermore, since the operating temperature of the sensor will affect the data it collects, for example, the rotation angle data of the tilt sensor will be affected by its operating temperature; therefore, in some embodiments, the rotation angle data can be compensated by the collected temperature data.

[0106] Optionally, the control module 203 is electrically connected to the temperature sensing module 205 and is used to correct the error of the rotation angle data based on the collected temperature data.

[0107] In one or more embodiments, the compensation model for the rotation angle data can be defined by the user, for example, in polynomial form, such as Offcorr = a*T 3 +b*T 2 -c*Td etc., where Offcorr is the calculated compensation value, and a, b, c, and d are all parameters. This formula uses a cubic temperature curve model to simulate the actual situation to calculate the compensation value. Of course, in other embodiments, more exponential curves (such as quartic, quintic, etc.) or quadratic curves can also be used to achieve this, and it is not limited to this embodiment.

[0108] Optionally, the circuit system includes a storage module 206 for temporarily storing rotation angle data that could not be transmitted due to an interruption in communication with the outside world. The storage module 206 can be implemented using a non-volatile storage medium such as a FLASH ROM or a hard disk, enabling the storage of rotation angle data even in the event of power failure.

[0109] In this embodiment, the storage module 206 is electrically connected to and controlled by the control module 203. When communication is interrupted due to external device (such as server) failure, network failure, etc., the control module 203 can temporarily store the unsent rotation angle data in the storage module 206. When communication with the outside is restored, the control module 203 will synchronize with the outside to send out the stored rotation angle data.

[0110] Optionally, the monitoring component 200 is equipped with a battery (not shown) for powering the circuit system, thus eliminating the need for a power supply cable. Further optionally, the battery can be disposable; if the battery fails, the entire monitoring component 200 can be replaced without disassembling, recharging, and reinstalling, eliminating this repetitive and cumbersome process. Construction personnel only need to bring the new monitoring component 200 to the site for efficient disassembly and reassembly.

[0111] Understandably, although Figure 2The embodiments show many circuit modules, but in reality, they can be added or removed according to different implementation requirements. For example, any one or more of the temperature sensing module, storage module, and GNSS module can be removed.

[0112] As the crack widens, it extends horizontally on both sides. The monitoring equipment rotates around the installation fulcrum, and the tilt angle of the equipment changes. The crack width can be calculated by detecting the change in angle.

[0113] like Figure 3 The diagram shown illustrates a flowchart of the crack monitoring method in an embodiment of this application.

[0114] It is understood that the method can be applied to a processing device that is in communication with or integrated into the crack monitoring device.

[0115] For example, the processing device can be located in an external device that communicates with the crack monitoring device, such as the aforementioned server, desktop computer, mobile terminal, etc.; or it can be integrated into the crack monitoring device as a component, for example, as part of the circuit system, such as through the control module.

[0116] In this embodiment, the method includes the following steps:

[0117] Step S301: Obtain the rotation angle data.

[0118] In one or more embodiments, if the executing entity is an external device, it can communicate with the monitoring component of the crack monitoring device through, for example, a communication network connection or a direct connection, to obtain rotation angle data; if the executing entity is the crack monitoring device, its monitoring component can also obtain the rotation angle data.

[0119] Step S302: Calculate the crack width change data based on the geometric model of the mechanical structure of the crack monitoring device and the change in the geometric model caused by the mechanical motion corresponding to the rotation angle data.

[0120] The calculation of crack width variation data can be completed locally by the monitoring component, for example, through the control module. In subsequent steps, the calculated width variation data is sent to external devices (such as servers, desktop computers, mobile terminals, etc.) through the communication module; alternatively, the rotation angle data can be sent to external devices through the communication module to calculate the width variation data.

[0121] like Figure 4 The diagram shown illustrates the structure of the processing device 400 in an embodiment of this application.

[0122] In some embodiments, the processing device can be implemented within the control module of the monitoring component described in the foregoing embodiments, or within an external device communicating with the monitoring component, to achieve the function. For example, it can implement the function of the monitoring component collecting and transmitting rotation angle data; and / or, it can implement... Figure 2 The method described in the embodiments.

[0123] In this embodiment, the processing device 400 includes: one or more communicators 401, one or more memories 402, and one or more processors 403.

[0124] in,

[0125] The one or more communicators 401 are used for communicating with the outside.

[0126] The one or more memories 401 store computer programs;

[0127] The one or more processors 402 are configured to run the computer program to perform functions. For example, to perform the function of monitoring components to collect rotation angle data and transmit it externally; and / or to perform... Figure 2 Crack monitoring methods, etc., in the embodiments.

[0128] In possible implementations, when applied to the communication module of the monitoring component, the one or more communicators 401 may include wireless communication circuits, such as any one or more of the aforementioned GPRS, 4G / 5G, WiFi, NB-IoT, Zigbee, and LoRa circuits; of course, optionally, the one or more communicators 401 may also include wired communication circuits, such as serial ports, USB interfaces, network ports, etc.

[0129] In possible implementations, the one or more memories 402 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) and / or cache memory, and may also include one or more non-transitory computer readable storage media such as ROM, EEPROM, EPROM, flash memory devices, disks, etc., and / or combinations thereof.

[0130] In possible implementations, the one or more processors 403 can be any suitable processing element (e.g., processor core, microprocessor, ASIC, FPGA, controller, microcontroller, etc.) and can be a single processor or multiple processors operatively connected.

[0131] Preferably, when applied to the control module of the monitoring component, the processor 403 can be implemented using a low-power MCU; optionally, it can also be combined with a sleep wake-up mechanism, that is, only when receiving an external command will the tilt sensing module be controlled to start and collect rotation data, which can greatly reduce power consumption and extend the service life of the monitoring component.

[0132] It should also be noted that, in the above embodiments, the computer programs involved in the implementation of functions such as the crack monitoring method, the monitoring component, or its external communication devices can all be loaded onto a computer-readable storage medium. This computer-readable storage medium can be a tangible device capable of holding and storing instructions used by an instruction execution device. Computer-readable storage media can be, for example, but not limited to, electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusion structures storing instructions thereon, and any suitable combination thereof. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0133] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A crack monitoring device, characterized in that, include: The first and second fasteners are respectively fixedly installed on both sides of the crack; The first fastener has a first outer surface, and the first outer surface is provided with a shaft portion; The second fastener has a second outer surface; the second outer surface is provided with a support portion, and the support portion has a support surface on the side facing the first fastener; A monitoring component is connected to the shaft and can rotate around it. The monitoring component is also attached to the support surface so as to move along the support surface as the distance between the first and second fixing members changes. The monitoring component and the shaft are magnetically connected; The monitoring component includes: a circuit system; The circuit system includes: A tilt sensing module is used to collect rotation angle data of the monitoring component; wherein, the rotation angle data is used to monitor the width change of the crack; the tilt sensing module includes a tilt sensor; A control module is electrically connected to and controls the tilt sensing module; the control module is used to calculate the crack width change data based on the geometric model of the mechanical structure of the crack monitoring device and the change of the geometric model caused by the mechanical motion corresponding to the rotation angle data. A temperature sensing module is used to collect temperature data; a control module is electrically connected to the temperature sensing module and is used to correct the error of the rotation angle data based on the collected temperature data.

2. The crack monitoring device according to claim 1, characterized in that, The supporting surface is an inclined surface or a curved surface.

3. The crack monitoring device according to claim 1, characterized in that, The circuit system includes a communication module electrically connected to the tilt sensing module or control module, used to communicate with the outside to send the rotation angle data or the width change data calculated therefrom.

4. The crack monitoring device according to claim 1, characterized in that, The circuit system includes a communication module electrically connected to the tilt sensing module or control module for communicating with the outside.

5. The crack monitoring device according to claim 3 or 4, characterized in that, The communication module includes a wireless communication circuit; the wireless communication circuit includes any one or more of the following: GPRS, 4G / 5G, WiFi, NB-IoT, Zigbee, and LoRa.

6. The crack monitoring device according to claim 1, characterized in that, The circuit system includes: a GNSS module.

7. The crack monitoring device according to claim 1, characterized in that, The circuit system includes a storage module for temporarily storing rotation angle data that could not be sent due to interruption of communication with the outside world.

8. The crack monitoring device according to claim 1, characterized in that, The monitoring component is equipped with a battery for powering the circuit system.

9. The crack monitoring device according to claim 8, characterized in that, The battery is disposable.

10. A crack monitoring method, characterized in that, The method, applied to a processing device that is communicatively connected to or integrated into the crack monitoring device as described in any one of claims 1 to 9, comprises: Obtain the rotation angle data; Based on the geometric model of the mechanical structure of the crack monitoring device and the changes in the geometric model caused by the mechanical motion corresponding to the rotation angle data, the crack width change data is calculated.

11. A processing apparatus, characterized in that, include: One or more communicators for communicating with the outside world; One or more memory devices for storing computer programs; One or more processors are configured to run the computer program to perform the method as described in claim 10.

12. A computer-readable storage medium, characterized in that, The computer program is stored thereon, and when the computer program is run, it performs the method as described in claim 10.

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