Beam body strain monitoring system

Abstract

The utility model provides a beam body strain monitoring system, which comprises a target arranged at a position to be monitored; the light source directly faces the target, so that the target emits monitoring light; the industrial camera directly faces the target so as to carry out image acquisition on the target, and a collimator is arranged between the industrial camera and the target; and the data conversion machine is correspondingly connected with the industrial camera so as to convert the image data acquired by the industrial camera and then transmit the converted image data to the image processing device. The targets are arranged at the to-be-detected point positions of the beam body, then the industrial camera is placed on the relatively stable ground, the installation difficulty of the industrial camera is reduced, the industrial camera carries out parallel processing on light sources on the targets through the parallel light pipes and then the light sources are guided into the industrial camera, and therefore the measurement accuracy is guaranteed; the beam body is monitored according to actual requirements, installation and adjustment are facilitated, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge monitoring, and in particular relates to a beam body strain monitoring system. Background Art

[0002] With the rapid development of my country's high-speed railways, people are paying more and more attention to the monitoring of track conditions, especially the monitoring of rail displacement in special sections (small radius curves, long bridges, long ramps, rail expansion and contraction adjusters and switches, etc.), which is the focus of people's attention, because the displacement of rails in these sections affects the stability of the line and driving safety. During the operation of high-speed railways, personnel are not allowed to enter the line, and it is impossible to realize real-time monitoring of rail displacement manually on site. Moreover, the manual monitoring method has the disadvantages of low efficiency and low measurement accuracy. In the prior art, a monitoring target is generally set on the target target, and a reference target is set on a fixed object. Then, the monitoring target and the reference target are compared by a camera, which requires the camera to be leveled and adjusted to align with the two targets. The adjustment is difficult and time-consuming.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art. The utility model provides a beam strain monitoring system.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A beam strain monitoring system, comprising:

[0007] A target, wherein the target is arranged at a point to be monitored;

[0008] A light source, the light source facing the target so that the target emits monitoring light;

[0009] An industrial camera, the industrial camera is facing the target to collect images of the target, and a parallel light pipe is provided between the industrial camera and the target;

[0010] A data converter is connected to the industrial camera to convert the image data collected by the industrial camera and transmit it to the image processing device.

[0011] Preferably, a base is provided under the target, and the base is adhered to the point to be monitored by bolts or glue;

[0012] The target is made of transparent or translucent material, the light source is arranged on the back of the target, and a center mark is arranged in the middle of the target.

[0013] Preferably, the light source is a near-infrared light source or an infrared light source.

[0014] Preferably, the industrial camera, the collimator and the data converter are integrated on a base;

[0015] The base comprises:

[0016] A bottom plate, the bottom plate having a flat bottom surface, and a plurality of adjustment columns are arranged in the middle of the bottom plate;

[0017] A U-shaped plate is mounted above the plurality of adjusting columns, and the industrial camera and the parallel light tube are respectively mounted on both ends of the U-shaped plate.

[0018] Preferably, the adjustment column is a stud, the lower end of the stud is universally hinged to the base plate via a lower ball head, and the upper end of the stud is universally hinged to the U-shaped plate via a hinged ball head.

[0019] Preferably, the U-shaped plate is provided with a mounting hole corresponding to the articulated ball head, baffles corresponding to the articulated ball head are fixed to the upper and lower surfaces of the U-shaped plate, and a hemispherical groove is provided on one side of the baffle close to the articulated ball head.

[0020] Preferably, there are four adjusting columns, which are respectively located at four corners of the U-shaped plate.

[0021] Preferably, a beam splitter prism is provided between the industrial camera and the collimator.

[0022] Beneficial effects: The target is set at the point to be tested on the beam, and then the industrial camera is placed on a relatively stable ground to reduce the difficulty of installing the industrial camera. The industrial camera uses a parallel light tube to parallel process the light source on the target and then imports it into the industrial camera, thereby ensuring the accuracy of the measurement. Multiple targets are set on the beam, and the beam is monitored according to actual needs, which is convenient for installation and adjustment and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0024] Figure 1 A simplified structural diagram of a monitoring system in a specific embodiment provided by the utility model;

[0025] Figure 2 This is a schematic diagram of the installation of the base in the specific embodiment provided by the utility model;

[0026] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0027] In the figure: 1. base plate; 2. target; 3. beam; 4. industrial camera; 5. stud; 6. articulated ball head; 7. kit; 8. baffle; 9. data converter; 10. U-shaped plate; 11. collimator; 12. image processing device. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0029] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0031] like Figure 1-3 As shown, a beam strain monitoring system includes a target 2, a light source and an industrial camera 4, wherein the target 2 is fixed on the beam 3 and is located at a point to be monitored, such as a small radius curve, a long bridge, a long ramp, a rail expansion adjuster and a switch, etc. The light source is facing the target 2 so that the target 2 emits a monitoring light. Specifically, the light can be shone on the target 2 and the monitoring light is reflected by the target 2. Alternatively, a light source can be arranged on the back of the target 2 so that the target 2 has a certain brightness and emits the monitoring light.

[0032] The industrial camera 4 faces the target 2 to capture images of the target 2, and the image capture frame rate is ≥ 200 Hz; a parallel light tube 11 is provided between the industrial camera 4 and the target 2.

[0033] After the light on the target 2 enters the slit of the collimator 11, the slit allows the light to pass through a very narrow channel, thereby limiting the propagation direction of the light, and the light will be refracted (diopter) by the curvature of the lens. The shape of the lens causes the light to be deflected when passing through the lens, so that the light from different positions can converge to a focus. This is because the design of the lens makes all the light passing through it propagate in the same direction, thus generating parallel beams that enter the industrial camera 4. Since the lens is constant, with the lens image as the reference, when the target 2 vibrates with the beam 3, it will vibrate within the lens image frame, so that the amplitude and frequency of the target 2 can be judged based on the captured image.

[0034] The industrial camera 4 is connected to the data converter 9, which converts the image taken by the industrial camera 4 into a digital image signal after A / D conversion. The data converter 9 has a data interface or a wireless transmission module, so that it is transmitted to the image processing device 12 through a wireless network or a data cable. The image processing device 12 is a PC end, and the PC end is installed with image processing software, so as to identify and perform displacement calculations on the target 2 in the image, and obtain the amplitude and frequency of the target 2.

[0035] Furthermore, the data converter 9 is connected to a data storage module via a data line to store the data.

[0036] In an optional embodiment, a base is provided under the target 2. The target and the base are made of acrylic plate and stainless steel. The base is adhered to the monitored point by bolts or glue, so that it can vibrate at the same frequency as the beam body 3, thereby accurately reflecting the vibration state of the beam body 3. The target 2 is made of transparent or translucent material, and the light source is arranged on the back of the target 2, so that the light source can pass through, thereby generating sufficient light source intensity. A center mark is provided in the middle of the target 2. The center mark is used as a calculation point, and the amplitude and frequency are obtained in combination with the image.

[0037] The light source is a near-infrared light source or an infrared light source with a wavelength of about 950nm, which is invisible light to avoid affecting the riding comfort of passengers. At this time, a beam splitter prism is provided between the industrial camera 4 and the parallel light tube 11 to separate the infrared light or near-infrared light, so as to obtain a clearer image of the target 2.

[0038] Furthermore, the target 2 is a circular target 2 or a square target, a light source is arranged at the center of the back thereof, the light source is an infrared or near-infrared light emitter, the target 2 is made of a non-transparent material, and a center hole is arranged at the center of the target 2 as a center mark.

[0039] In an optional embodiment, a beam expander is disposed behind the collimator 11 to amplify the image of the target 2 .

[0040] The industrial camera 4, collimator 11 and data converter 9 are integrated on the base, which is easy to carry. The base includes a bottom plate 1 and a U-shaped plate 10, wherein the bottom plate 1 has a flat bottom surface, which can prevent it from being on the flat ground to ensure stability. The bottom plate 1 can be a steel plate, so it has a high weight to ensure that the industrial camera 4 does not become unstable during the monitoring process. A plurality of adjustment columns are provided in the middle of the bottom plate 1, and the U-shaped plate 10 is assembled above the plurality of adjustment columns to support the U-shaped plate 10, and the industrial camera 4 and the collimator 11 are respectively assembled at both ends of the U-shaped plate 10. The industrial camera 4 and the collimator 11 are fixed to the U-shaped plate 10 by bolts.

[0041] In this embodiment, the adjusting column is a stud 5, and the lower end of the stud 5 is universally hinged on the base plate 1. Specifically, a lower ball head is provided at the lower end of the stud 5, and a cover-shaped kit 7 is provided on the base plate 1. The lower end of the stud 5 extends into the center of the kit 7. A through hole corresponding to the stud 5 is provided in the middle of the kit 7 (the inner diameter of the through hole is larger than the diameter of the stud), and a spherical hinge groove corresponding to the lower ball head is provided inside, thereby forming a universal hinge, and the bottom is fixed to the base plate 1 by welding.

[0042] The upper end of the stud 5 passes through the horizontal part of the U-shaped plate 10, and an articulated ball head 6 is provided between the stud 5 and the U-shaped plate 10. Specifically, a mounting hole corresponding to the stud is provided on the U-shaped plate 10, and the diameter of the mounting hole is larger than the diameter of the articulated ball head 6. Baffles corresponding to the articulated ball head of the adjusting screw are fixed on the upper and lower surfaces of the U-shaped plate, which can be welded, threaded or glued. A hemispherical groove is provided on the side of the baffle close to the articulated ball head of the adjusting screw, and a through hole is provided in the middle of the baffle 8 for the stud 5 to pass through. The inner diameter of the through hole is larger than the diameter of the stud 5. A corresponding hemispherical groove can be provided on the baffle, or the part of the baffle corresponding to the articulated ball head is pressurized into a hemispherical shape to form a universal hinge. The stud 5 passes through the threaded hole in the middle of the articulated ball head, so that the height of the U-shaped plate 10 can be adjusted by rotating the stud 5, so that the industrial camera 4 can accurately aim at the target 2 for shooting.

[0043] Furthermore, the upper surface of the bottom plate is provided with a hemispherical columnar receiving groove corresponding to the lower ball head, thereby increasing the contact area and ensuring the stability of the universal joint.

[0044] In an optional embodiment, there are four adjustment columns, which are respectively located at four corners of the U-shaped plate 10, so as to achieve multi-angle and all-round adjustment.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A beam strain monitoring system, characterized in that: include: A target, wherein the target is set at a point to be monitored; A light source, the light source facing the target so that the target emits monitoring light; An industrial camera, the industrial camera is facing the target to collect images of the target, and a parallel light pipe is provided between the industrial camera and the target; A data converter is connected to the industrial camera to convert the image data collected by the industrial camera and transmit it to the image processing device.

2. The beam strain monitoring system according to claim 1, characterized in that: A base is provided under the target, and the base is adhered to the point to be monitored by bolts or glue; The target is made of transparent or translucent material, the light source is arranged on the back of the target, and a center mark is arranged in the middle of the target.

3. The beam strain monitoring system according to claim 2, characterized in that: The light source is a near-infrared light source or an infrared light source.

4. The beam strain monitoring system according to claim 1, characterized in that: The industrial camera, the collimator and the data converter are integrated on a base; The base comprises: A bottom plate, the bottom plate having a flat bottom surface, and a plurality of adjustment columns are arranged in the middle of the bottom plate; A U-shaped plate is mounted above the plurality of adjusting columns, and the industrial camera and the parallel light tube are respectively mounted on both ends of the U-shaped plate.

5. The beam strain monitoring system according to claim 4, characterized in that: The adjusting column is a stud, the lower end of the stud is universally hinged to the bottom plate through a lower ball head, and the upper end of the stud is universally hinged to the U-shaped plate through a hinged ball head.

6. The beam strain monitoring system according to claim 5, characterized in that: The U-shaped plate is provided with a mounting hole corresponding to the articulated ball head, and baffles corresponding to the articulated ball head are fixed to the upper and lower surfaces of the U-shaped plate, and a hemispherical groove is provided on one side of the baffle close to the articulated ball head.

7. The beam strain monitoring system according to claim 5, characterized in that: There are four adjusting columns, which are respectively located at four corners of the U-shaped plate.

8. The beam strain monitoring system according to claim 4, characterized in that: A beam splitter prism is arranged between the industrial camera and the collimator.

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