In-plane corner monitoring device and method
Patent Information
- Application Number
- CN202211214794.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-30
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2042-09-30
AI Technical Summary
[0005]针对现有技术中存在的缺陷，本发明的目的在于提供一种面内转角监测装置及方法，能够解决现有技术中的监测装置无法监控水平方向的转角，且无法实现高频监控的问题
[0028]与现有技术相比，本发明的优点在于：通过图像采集设备获取基准靶标以及两个监测靶标横桥向和竖向的坐标，根据基准靶标以及两个监测靶标横桥向的坐标，确定梁端水平转角，同时还可根据基准靶标以及两个监测靶标竖向的坐标，确定梁体扭转角。图像采集设备的采集频率较高，因此可以获取较大频率的梁端水平转角监测值，实现高频采样，另外，采用图像采集设备，可实现监控横向方向的位移，从而实现监控梁端水平转角，监控竖向方向的位移，从而实现同时监控梁体扭转角，克服了现有技术中采用加速度传感器，只能采集竖向方向转角的问题。
Smart Images
Figure CN115824093B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of bridge monitoring technology, specifically to an in-plane rotation monitoring device and method. Background Technology
[0002] The in-plane rotation angle of a bridge reflects the rotation within the bridge plane and is an important indicator of bridge safety.
[0003] Currently, most mature angle measurement sensors are accelerometers based on the principle of inertia, which use the angle between the vertical axis of gravity and the sensitive axis of the accelerometer to reflect changes in the structural angle.
[0004] However, this technology has difficulty measuring rotations in a plane; that is, when the axis rotates to be perpendicular to the direction of gravitational acceleration, the accelerometer cannot be used. In addition, this type of sensor is susceptible to temperature effects and is difficult to sample at high frequencies, which limits its application scenarios. Summary of the Invention
[0005] In view of the deficiencies in the existing technology, the purpose of this invention is to provide an in-plane corner monitoring device and method, which can solve the problems that the existing monitoring devices cannot monitor the horizontal corner and cannot achieve high-frequency monitoring.
[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0007] This invention provides an in-plane rotation angle monitoring device, comprising:
[0008] A reference target, which is used to be set on the bridge pier;
[0009] Two monitoring targets are set at both ends of the bridge in the transverse direction;
[0010] Image acquisition equipment used to obtain the horizontal and vertical coordinates of a reference target and two monitoring targets.
[0011] In some alternative solutions, a signal transmission mechanism is also included, which is connected to the image acquisition device to acquire the data collected by the image acquisition device and transmit it to a remote monitoring center or cloud computing platform.
[0012] In some alternative schemes, both the baseline target and the two monitoring targets are LED lights.
[0013] In some alternative solutions, the image acquisition device is a high-speed camera, and the sampling rate of the image acquisition device is greater than or equal to 50Hz.
[0014] In some alternative solutions, a power supply is also included to power the reference target, monitoring target, and image acquisition equipment.
[0015] In some alternative solutions, an analysis mechanism is also included, which is signal-connected to the image acquisition device to acquire the data collected by the image acquisition device and calculate the horizontal rotation angle of the beam end based on the acquired data.
[0016] On the other hand, the present invention also provides an in-plane corner monitoring method, comprising the following steps:
[0017] Obtain the coordinates of the reference target and two monitoring targets in the transverse and vertical directions of the bridge. The reference target is set on the bridge pier, and the two monitoring targets are set at both ends of the bridge in the transverse direction.
[0018] Based on the reference target and the horizontal and vertical coordinates of the two monitoring targets, the horizontal rotation angle at the beam end and the torsional angle of the beam body are determined.
[0019] In some alternative schemes, determining the horizontal rotation angle and the torsional angle of the beam end based on the reference target and the transverse and vertical coordinates of two monitoring targets includes:
[0020] Based on the horizontal and vertical coordinates of the baseline target, correct the horizontal and vertical coordinates of the two monitoring targets.
[0021] Based on the corrected horizontal and vertical coordinates of the two monitoring targets, the horizontal rotation angle at the beam end and the torsional angle of the beam body are determined.
[0022] In some alternative schemes, the transverse coordinates of the two monitoring targets are corrected according to the formulas x1' = x1 - x3 and x2' = x2 - x3;
[0023] The horizontal rotation angle at the beam end is determined using the formula α=(x2'-x1') / L;
[0024] Where x3 is the transverse bridge coordinate of the reference target, x1 and x2 are the transverse bridge coordinates of the two monitoring targets respectively, x1' and x2' are the corrected transverse bridge coordinates of the two monitoring targets respectively, L is the distance between the two monitoring targets in the transverse bridge direction, and α is the horizontal rotation angle at the beam end.
[0025] In some alternative schemes, the vertical coordinates of the two monitoring targets are corrected according to the formulas y1' = y1 - y3 and y2' = y2 - y3;
[0026] The torsional angle of the beam is determined using the formula β=(y2'-y1') / L;
[0027] Where y3 is the vertical coordinate of the reference target, y1 and y2 are the vertical coordinates of the two monitoring targets respectively, y1' and y2' are the vertical coordinates of the two monitoring targets after correction, L is the distance between the two monitoring targets in the transverse direction, and β is the torsion angle of the beam.
[0028] Compared with existing technologies, the advantages of this invention are as follows: It acquires the horizontal and vertical coordinates of a reference target and two monitoring targets using an image acquisition device. Based on the horizontal coordinates of the reference target and the two monitoring targets, the horizontal rotation angle of the beam end is determined. Simultaneously, the vertical coordinates of the reference target and the two monitoring targets can be used to determine the beam's torsion angle. The image acquisition device has a high acquisition frequency, thus enabling the acquisition of a larger frequency of horizontal rotation angle monitoring values at the beam end, achieving high-frequency sampling. Furthermore, by using an image acquisition device, it is possible to monitor lateral displacement, thereby monitoring the horizontal rotation angle of the beam end. Monitoring vertical displacement allows for simultaneous monitoring of the beam's torsion angle, overcoming the limitation of existing technologies that use accelerometers, which can only acquire vertical rotation angle data. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the in-plane rotation angle monitoring device in an embodiment of the present invention;
[0031] Figure 2 This is a flowchart illustrating the in-plane corner monitoring method in an embodiment of the present invention.
[0032] In the diagram: 1. Reference target; 2. Monitoring target; 3. Image acquisition equipment; 4. Signal transmission mechanism; 5. Power supply. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0034] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0035] like Figure 1 As shown, the present invention provides an in-plane corner monitoring device, comprising: a reference target 1, an image acquisition device 3, and two monitoring targets 2.
[0036] The reference target 1 is set on the bridge pier; the two monitoring targets 2 are set at both ends of the bridge in the transverse direction; and the image acquisition device 3 is used to acquire the transverse and vertical coordinates of the reference target 1 and the two monitoring targets 2.
[0037] When using this in-plane rotation monitoring device, a reference target 1 is set on the bridge pier, and two monitoring targets 2 are respectively set at both ends of the bridge in the transverse direction. The image acquisition device 3 acquires the transverse and vertical coordinates of the reference target 1 and the two monitoring targets 2. Based on the transverse coordinates of the reference target 1 and the two monitoring targets 2, the horizontal rotation angle of the beam end is determined. Simultaneously, based on the vertical coordinates of the reference target and the two monitoring targets, the torsional angle of the beam is determined. The image acquisition device 3 has a high acquisition frequency, thus it can acquire a large frequency of monitoring values for the horizontal rotation angle of the beam end and the torsional angle of the beam, achieving high-frequency sampling. Furthermore, this device overcomes the problem of existing technologies using velocity sensors, which can only acquire vertical rotation angles.
[0038] In some optional embodiments, the in-plane corner monitoring device further includes a signal transmission mechanism 4, which is signal-connected to the image acquisition device 3, for acquiring the acquisition data of the image acquisition device 3 and transmitting it to a remote monitoring center.
[0039] In this embodiment, the data collected by the image acquisition device 3 is transmitted to a remote monitoring center or cloud computing platform through the signal transmission mechanism 4. The data collected by the image acquisition device 3 can be processed remotely to obtain monitoring results. Therefore, real-time remote monitoring of the corner situation on site can be realized. With the setting of critical corner values, unmanned automated monitoring can be realized.
[0040] In this example, the signal transmission mechanism 4 uses a 5G router. Using a 5G router as the signal transmission mechanism 4 can transmit the collected data more efficiently and avoid the adverse effects caused by data transmission interruption.
[0041] In some alternative embodiments, both the quasi-target 1 and the two monitoring targets 2 are LED lights.
[0042] In this embodiment, both the reference target 1 and the two monitoring targets 2 are equipped with LED lights, which enables the image acquisition device 3 to obtain clearer images and obtain more accurate coordinates of the reference target 1 and the monitoring targets 2.
[0043] In some alternative embodiments, the image acquisition device 3 is a high-speed camera.
[0044] In this embodiment, the image acquisition device 3 uses a high-speed camera. The high-speed camera has a high acquisition frequency, which enables high-frequency sampling and thus can obtain a larger frequency of horizontal rotation angle monitoring values at the beam end.
[0045] In some optional embodiments, the sampling rate of the image acquisition device 3 is greater than or equal to 50 Hz.
[0046] In this embodiment, the sampling rate of the image acquisition device 3 is greater than or equal to 50Hz, which realizes high-frequency sampling. This means that the coordinates of the reference target 1 and the two monitoring targets 2 in the transverse direction can be obtained at a high frequency. The transverse coordinate values of each set of reference target 1 and the two monitoring targets 2 can determine a horizontal rotation angle at the beam end. Therefore, a sampling rate greater than or equal to 50Hz can obtain a large frequency of horizontal rotation angle monitoring values at the beam end.
[0047] In some alternative embodiments, the in-plane corner monitoring device also includes a power supply 5 for powering the reference target 1, the monitoring target 2, and the image acquisition device 3.
[0048] In this embodiment, the power source 5 can be a storage battery or a generator to provide power on-site. In addition, in areas where municipal power supply is available, municipal power supply can be used.
[0049] In some optional embodiments, the in-plane rotation monitoring device further includes an analysis mechanism that is signal-connected to the image acquisition device 3, for acquiring the acquisition data of the image acquisition device 3, and calculating the horizontal rotation angle of the beam end and the torsional angle of the beam body based on the acquired data.
[0050] In this embodiment, if only short-term on-site monitoring is required, an analysis mechanism can be set up on-site and connected to the image acquisition device 3. After acquiring the data collected by the image acquisition device 3, the horizontal rotation angle of the beam end and the torsion angle of the beam body can be calculated based on the acquired data. In this way, the horizontal rotation angle of the beam end and the torsion angle of the beam body can be monitored on-site.
[0051] like Figure 2 As shown, on the other hand, the present invention also provides an in-plane corner monitoring method, comprising the following steps:
[0052] S1: Obtain the coordinates of the reference target 1 and two monitoring targets 2 in the transverse and vertical directions. The reference target 1 is set on the bridge pier, and the two monitoring targets 2 are set at both ends of the transverse direction of the bridge.
[0053] In this example, the reference target 1 is set on the bridge pier, and two monitoring targets 2 are set at both ends of the bridge in the transverse direction. The coordinates of the reference target 1 and the two monitoring targets 2 in the transverse and vertical directions are obtained in real time by the image acquisition device 3.
[0054] S2: Determine the horizontal rotation angle and the torsional angle of the beam end based on the coordinates of the reference target 1 and the two monitoring targets 2 in the transverse and vertical directions.
[0055] In some optional embodiments, S21: Correct the horizontal and vertical coordinates of the two monitoring targets 2 according to the horizontal and vertical coordinates of the reference target 1.
[0056] In this example, the reference target 1 is set on the pier and used as the reference for correction, which can obtain a more accurate horizontal rotation value at the beam end.
[0057] Based on the formulas x1' = x1 - x3 and x2' = x2 - x3, correct the transverse coordinates of the two monitoring targets 2.
[0058] Based on the formulas y1'=y1-y3 and y2'=y2-y3, correct the vertical coordinates of the two monitoring targets 2.
[0059] S22: Determine the horizontal rotation angle at the beam end based on the corrected transverse coordinates of the two monitoring targets 2.
[0060] The horizontal rotation angle at the beam end is determined using the formula α=(x2'-x1') / L;
[0061] The torsional angle of the beam is determined using the formula β=(y2'-y1') / L;
[0062] Where x3 is the transverse bridge coordinate of the reference target 1, x1 and x2 are the transverse bridge coordinates of the two monitoring targets 2 respectively, x1' and x2' are the corrected transverse bridge coordinates of the two monitoring targets 2 respectively, L is the distance between the two monitoring targets 2 in the transverse bridge direction, and α is the horizontal rotation angle at the beam end.
[0063] y3 is the vertical coordinate of the reference target 1, y1 and y2 are the vertical coordinates of the two monitoring targets 2 respectively, y1' and y2' are the corrected vertical coordinates of the two monitoring targets 2 respectively, L is the distance between the two monitoring targets 2 in the transverse direction, and β is the torsion angle of the beam.
[0064] In summary, by setting the reference target 1 on the bridge pier and two monitoring targets 2 at the two ends of the bridge in the transverse direction, respectively, and using the image acquisition device 3 to acquire the transverse and vertical coordinates of the reference target 1 and the two monitoring targets 2, the horizontal rotation angle of the beam end can be determined based on the transverse coordinates of the reference target 1 and the two monitoring targets 2. Simultaneously, the beam torsion angle can be determined based on the vertical coordinates of the reference target and the two monitoring targets. The image acquisition device 3 has a high acquisition frequency, thus acquiring a larger frequency of monitoring values for the horizontal rotation angle and the beam torsion angle, achieving high-frequency sampling. Furthermore, this device overcomes the limitation of existing technologies using velocity sensors, which can only acquire vertical rotation angles. Setting the reference target 1 on the bridge pier as a correction reference allows for more accurate values of the horizontal rotation angle and the beam torsion angle. The data collected by the image acquisition device 3 is transmitted to the remote monitoring center or cloud computing platform through the signal transmission mechanism 4. The data collected by the image acquisition device 3 can be processed remotely to obtain monitoring results. Therefore, real-time remote monitoring of the corner situation on site can be realized. With the setting of critical corner values and torsion values, unmanned automated monitoring can be realized.
[0065] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0066] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0067] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. An in-plane rotation angle monitoring device, characterized in that, include: A reference target (1) is used to be set on the bridge pier; Two monitoring targets (2) are set at both ends of the bridge in the transverse direction; Image acquisition device (3), which is used to acquire the horizontal and vertical coordinates of the reference target (1) and two monitoring targets (2); The analysis mechanism is connected to the image acquisition device (3) to acquire the acquisition data of the image acquisition device (3) and calculate the horizontal rotation angle of the beam end based on the acquired data; the horizontal and vertical coordinates of the two monitoring targets (2) are corrected according to the horizontal and vertical coordinates of the reference target (1); the horizontal rotation angle of the beam end is determined according to the corrected horizontal and vertical coordinates of the two monitoring targets (2); the horizontal coordinates of the two monitoring targets (2) are corrected according to the formulas x1'=x1-x3 and x2'=x2-x3; the horizontal rotation angle of the beam end is determined according to the formula α=(x2'-x1') / L; where x3 is the horizontal coordinate of the reference target (1), x1 and x2 are the horizontal coordinates of the two monitoring targets (2), x1' and x2' are the corrected horizontal coordinates of the two monitoring targets (2), L is the distance between the two monitoring targets (2) in the horizontal direction, and α is the horizontal rotation angle of the beam end.
2. The in-plane rotation angle monitoring device as described in claim 1, characterized in that, It also includes a signal transmission mechanism (4), which is connected to the image acquisition device (3) to acquire the acquisition data of the image acquisition device (3) and transmit it to a remote monitoring center or cloud computing platform.
3. The in-plane rotation angle monitoring device as described in claim 1, characterized in that, The baseline target (1) and the two monitoring targets (2) are all equipped with LED lights.
4. The in-plane rotation angle monitoring device as described in claim 1, characterized in that, The image acquisition device (3) is a high-speed camera, and the sampling rate of the image acquisition device (3) is greater than or equal to 50Hz.
5. The in-plane rotation angle monitoring device as described in any one of claims 1-4, characterized in that, It also includes a power supply (5) for supplying power to the reference target (1), the monitoring target (2) and the image acquisition device (3).
6. A method for monitoring in-plane rotation angles, characterized in that, Includes the following steps: Obtain the coordinates of the reference target (1) and two monitoring targets (2) in the transverse and vertical directions. The reference target (1) is set on the bridge pier, and the two monitoring targets (2) are set at both ends of the bridge in the transverse direction. Based on the coordinates of the benchmark target (1) and the two monitoring targets (2) in the transverse and vertical directions, determine the horizontal rotation angle and the torsional angle of the beam end; including: Based on the horizontal and vertical coordinates of the baseline target (1), the horizontal and vertical coordinates of the two monitoring targets (2) are corrected; Based on the corrected coordinates of the two monitoring targets (2) in the transverse and vertical directions, determine the horizontal rotation angle at the beam end and the torsional angle of the beam body; Based on the formulas x1'=x1-x3 and x2'=x2-x3, correct the transverse coordinates of the two monitoring targets (2); The horizontal rotation angle at the beam end is determined using the formula α=(x2'-x1') / L; Where x3 is the coordinate of the reference target (1) in the transverse direction, x1 and x2 are the coordinates of the two monitoring targets (2) in the transverse direction, x1' and x2' are the coordinates of the two monitoring targets (2) in the transverse direction after correction, L is the distance between the two monitoring targets (2) in the transverse direction, and α is the horizontal rotation angle at the beam end.
7. The in-plane rotation monitoring method as described in claim 6, characterized in that: According to the formulas y1'=y1-y3 and y2'=y2-y3, correct the vertical coordinates of the two monitoring targets (2); according to the formula β=(y2'-y1') / L, determine the torsion angle of the beam; Where y3 is the vertical coordinate of the reference target (1), y1 and y2 are the vertical coordinates of the two monitoring targets (2) respectively, y1' and y2' are the vertical coordinates of the two monitoring targets (2) after correction, L is the distance between the two monitoring targets (2) in the transverse direction, and β is the torsion angle of the beam.
Citation Information
Patent Citations
Method and system for monitoring three-dimensional deformation of immersed tunnel joint
CN113409285A