Laser track overhead line system parameter measuring device and control method

Abstract

The invention discloses a laser track contact network parameter measuring device and a control method, and the device comprises a prism which is provided with a through hole; the laser transceiver is provided with a laser emitting head, the laser emitting head is used for emitting laser, and the laser irradiates the to-be-measured object through the through hole; a camera; wherein the picture of the object to be measured is refracted into the camera by the prism through the reflection path. According to the invention, the prism is provided with the through hole, so that the deviation of a final measurement result caused by diffuse reflection of laser due to non-uniform medium in the prism when the laser irradiates a measurement point is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser measurement, and in particular to a laser track contact network parameter measurement device and a control method. Background Art

[0002] In the operation and maintenance of electrified railways, the state of the contact network is directly related to the safety and efficiency of railway transportation. Traditional contact network detection methods mainly rely on manual visual inspection and simple measuring tools. These methods are not only time-consuming and labor-intensive, but also have limited accuracy and are difficult to meet the high standards of safety and efficiency of modern high-speed railways. With the development of science and technology, laser technology has been widely used in the parameter measurement of contact networks due to its high precision, high efficiency and non-contact characteristics. Although the existing laser concentric transmitting and receiving prism structure and track contact network parameter measurement device have improved the efficiency and accuracy of measurement to a certain extent, there are still some limitations. These devices often require complex operating procedures, and their stability and reliability in complex environments need to be improved. Therefore, it is very necessary to provide a reliable laser track contact network parameter measurement device and control method.

[0003] However, one of the shortcomings of the related prior art is that when the laser passes through the prism, it needs to pass through the prism body, and the medium of the prism itself is uneven, which causes diffuse reflection of the laser and affects the measurement result. Summary of the invention

[0004] The present invention aims to solve at least one of the above technical problems.

[0005] The first object of the present invention is to provide a laser track contact network parameter measurement device.

[0006] The second object of the present invention is to provide a control method for a laser rail contact network parameter measuring device.

[0007] To achieve the first purpose of the present invention, the present invention provides a laser rail contact network parameter measuring device, which includes: a prism, the prism is provided with a through hole; a laser transceiver, the laser transceiver is provided with a laser transmitter head, the laser transmitter head is used to emit laser, and the laser is irradiated to the object to be measured through the through hole; a camera; wherein the image of the object to be measured is refracted by the prism through a reflection path and enters the camera.

[0008] The setting of the through hole effectively solves the problem of diffuse reflection caused by uneven medium when the laser passes through the prism in the prior art, thereby greatly improving the accuracy and reliability of the measurement results. This improvement enables the device to maintain high-precision measurement performance in complex environments. Secondly, after calibrating the camera and laser transceiver before use, the operation is simple, which reduces the skill requirements for operators and enables on-site staff to perform measurements more quickly and conveniently. This not only improves work efficiency, but also reduces human errors, further improving the accuracy of measurement data.

[0009] In the above technical solution, the prism is provided with a reflecting surface, and the through hole passes through the reflecting surface.

[0010] The reflective surface of the prism uses the principle of refraction to clearly introduce the measured object into the camera image, significantly improving the clarity and detail of the image. This high-precision imaging effect helps to more accurately analyze and measure various parameters of the track contact network, ensuring the reliability and accuracy of the data. The refractive properties of the reflective surface enable the device to maintain efficient working conditions in complex environments. Whether in strong light, weak light or night conditions, the reflective surface can effectively guide light to ensure that the measurement process is not disturbed by external light, thereby improving the environmental adaptability of the equipment. Since the reflective surface can automatically refract the measured object into the camera image, the operator only needs to simply aim at the target to complete the measurement. This greatly simplifies the operation process, reduces the skill requirements for operators, improves work efficiency, and also reduces the possibility of human error.

[0011] In any of the above technical solutions, the reflection path includes: an incident light path, the incident light path leads from the object to be measured to the prism; an imaging light path, the imaging light path leads from the prism to the camera, and a refraction light path is connected between the imaging light path and the incident light path.

[0012] Through the reflection path, the image in a certain area of ​​the object to be tested can be refracted into the camera through the prism, and the object to be tested can be directly observed by observing the image in the camera, so that the device can be more accurately aligned with the object to be tested, improving the accuracy and reliability of the measurement. The image in a certain area of ​​the object to be tested first enters the prism through the incident light path, then is turned inside the prism through the refraction light path, and finally enters the camera through the imaging light path, so that the image in a certain area of ​​the object to be tested can be clearly and accurately transmitted into the camera.

[0013] In any of the above technical solutions, the through hole is within the path of the incident light path, and the diameter of the through hole is not greater than one fiftieth of the width of the path of the incident light path.

[0014] The through hole is in the incident light path, and the diameter of the through hole is no more than one fiftieth of the width of the incident light path, ensuring that the laser can accurately pass through the prism and avoiding measurement errors caused by beam scattering or refraction. This design improves the accuracy and reliability of the measurement results and makes the detection of contact network parameters more accurate. If the diameter of the through hole is too large, it will cause too much loss of images in a certain area of ​​the object to be measured, and most of it cannot be transmitted into the camera. When the diameter of the through hole is set small enough, the diameter of the laser will not be larger than the provided diameter, which can ensure that the laser passes through the through hole smoothly without being disturbed by the prism, and will not affect the clear transmission of the image in a certain area of ​​the object to be measured into the camera image through refraction, making the measurement results clearer and more intuitive.

[0015] In any of the above technical solutions, the laser transceiver also includes an optical path receiving module and a circuit processing unit, and the circuit processing unit is connected to the optical path receiving module and the laser transmitting head.

[0016] The integration of the circuit processing unit enables the laser transceiver to monitor and adjust the optical signal in real time to ensure the accuracy of the data during the measurement process. By precisely controlling the synchronous operation of the laser transmitter and the receiving module, the measurement error is reduced and the measurement accuracy of the overall system is improved. The close connection between the circuit processing unit, the optical path receiving module, and the laser transmitter ensures the stability of the system in complex environments. This design reduces the impact of external interference on the measurement results, allowing the equipment to operate stably under various conditions and provide reliable data support. The circuit processing unit can quickly process the signals transmitted from the optical path receiving module and perform real-time analysis and calculation. This efficient data processing capability enables the measurement results to be generated and displayed quickly, making it convenient for operators to obtain information instantly, improving work efficiency and decision-making speed. The integrated circuit design simplifies the operation process of the laser transceiver, and users only need to simply set up to complete complex measurement tasks. It reduces the requirements for operator skills, reduces the possibility of human operating errors, and improves the ease of use and convenience of the equipment.

[0017] In any of the above technical solutions, the camera includes a lens, and the lens is provided with a lens center area.

[0018] In the lens image, aligning the center area of ​​the lens with the object to be measured can ensure that the measuring device is aligned with the desired object. This method significantly improves the accuracy and reliability of the measurement results, reduces the occurrence of errors, and makes the measurement results more accurate. Aligning the center area of ​​the lens simplifies the operation process and reduces the requirements for operator skills. Users only need to make simple adjustments to complete complex measurement tasks, reducing the possibility of human errors and improving the ease of use and convenience of the equipment.

[0019] To achieve the second purpose of the present invention, the present invention provides a control method for a laser rail contact network parameter measuring device, which is used to control the laser rail contact network parameter measuring device in any of the above-mentioned technical solutions, and includes: step S100: calibrating the camera and the laser transceiver; step S200: aligning the center area of ​​the lens with the measuring point, and then the laser transmitter emits a laser, the optical path receiving module receives the reflected laser, and the circuit processing unit processes the data and generates a measurement result.

[0020] The calibration camera and laser transceiver ensure the precise alignment and synchronization of the equipment, thereby improving the overall measurement accuracy. By aligning the center area of ​​the lens with the measurement point, it can be ensured that the laser can accurately illuminate the measurement point, reducing the occurrence of errors and making the detection of contact network parameters more accurate. The calibration steps and the alignment of the center area of ​​the lens simplify the operation process and reduce the requirements for operator skills. Users only need to follow the predetermined steps to complete complex measurement tasks, reducing the possibility of human errors and improving the ease of use and convenience of the equipment.

[0021] In the above technical solution, step S100 includes: step S110: the laser emitter emits laser and marks the position irradiated by the laser as a laser marking point; step S120: adjusting the position of the camera so that the center area of ​​the lens coincides with the laser marking point.

[0022] The laser point is marked by the laser transmitter head, and the camera position is adjusted to make the center area of ​​the lens consistent with the laser marking point, ensuring high-precision alignment during the measurement process. This method reduces the occurrence of errors and makes the detection of contact network parameters more accurate. The calibration steps and the alignment of the center area of ​​the lens simplify the operation process and reduce the requirements for operator skills. Users only need to follow the predetermined steps to complete complex measurement tasks, reducing the possibility of human errors and improving the ease of use and convenience of the equipment. In addition, adjusting the position of the camera in advance can ensure that the center area of ​​the lens seen in the lens image is consistent with the laser marking point when in use, ensuring the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of a laser rail contact network parameter measurement device provided by an embodiment of the present invention.

[0025] Figure 2 It is another schematic diagram of a laser rail contact network parameter measurement device provided by an embodiment of the present invention.

[0026] Figure 3 It is another schematic diagram of a laser rail contact network parameter measurement device provided by an embodiment of the present invention.

[0027] Figure 4 It is a flow chart of a control method of a laser rail contact network parameter measurement device provided by an embodiment of the present invention.

[0028] In the figure: 100-prism, 110-through hole, 120-reflecting surface, 200-laser transceiver, 210-laser transmitting head, 211-laser, 211a-, 300-camera, 310-lens, 311-lens center area, 400-object to be measured, 510-incident light path, 520-refractive light path, 530-imaging light path. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0030] like Figure 1 , Figure 2 as well as Figure 3As shown, an embodiment of the present invention provides a laser rail contact network parameter measurement device, which includes: a prism 100, the prism is provided with a through hole 110; a laser transceiver 200, the laser transceiver 200 is provided with a laser emitting head 210, the laser emitting head 210 is used to emit a laser 211, and the laser 211 is irradiated to the object to be measured 400 through the through hole 110; a camera 300; wherein the image of the object to be measured 400 is refracted by the prism 100 into the camera 300 through a reflection path; the prism 100 is provided with a reflection surface 120, and the through hole 110 passes through the reflection surface 120; the reflection path includes: an incident light path 510, an imaging light path 521, and a scanning light path 530. 30, the incident light path 510 leads from the object to be measured 400 to the prism 100, the imaging light path 530 leads from the prism 100 to the camera 300, and the refraction light path 520 is connected between the imaging light path 530 and the incident light path 510; the through hole 110 is within the path of the incident light path 510; the diameter of the through hole 110 is not greater than one fiftieth of the width of the path of the incident light path 510; the laser transceiver 200 also includes an optical path receiving module and a circuit processing unit, and the circuit processing unit is connected to the optical path receiving module and the laser transmitting head 210; the camera 300 includes a lens 310, and the lens 310 is provided with a lens center area 311.

[0031] In this embodiment, a through hole 110 is provided on the prism 100. Since the through hole 110 passes through the prism 100, the image of the object to be measured 400 within the coverage range of the through hole 110 cannot be refracted into the camera 300 by the prism 100. Therefore, the diameter of the through hole 110 cannot be greater than one-fiftieth of the incident light path 510 to avoid the through hole 110 from being too large and affecting the image of the object to be measured 400 in the camera 300, resulting in inaccurate measurement. In addition, the diameter of the laser 211 is not greater than the diameter of the through hole 110, ensuring that the laser 211 can smoothly pass through the through hole 110 while not passing through the inside of the prism 100, thereby avoiding the problem of laser scattering caused by the uneven medium inside the prism 100. In the prior art, after the laser 211 irradiates the measurement point, the image of a certain range around the measurement point of the object to be measured 400 is reflected into the image of the camera 300 through the prism 100. Therefore, in the prior art, it is possible to directly observe whether the laser 211 irradiates the measurement point through the image in the camera 300. In the present invention, since the through hole 110 is provided on the prism 100, the laser 211 cannot be reflected into the image of the camera 300 through the prism 100, and therefore it is not possible to directly observe whether the laser 211 irradiates the measuring point through the image of the camera 300. Therefore, it is necessary to calibrate the positions of the laser transceiver 200 and the camera 300 in advance before use to ensure that the lens center area 311 on the lens 310 is consistent with the laser marking point 211a. In this embodiment, the laser transceiver 200 is located below the prism 100, and the laser emitting head 210 is aligned with the through hole 110. The laser 211 can directly pass through the through hole 110 to irradiate the measuring point on the object to be measured 400. Since the diameters of the laser 211 and the through hole 110 are very small, most of the image of the area to be measured can be refracted into the image of the camera 300 through the two reflection surfaces 120 of the prism 100. Before measurement, the laser transmitter 210 is first ordered to emit laser 211. At this time, the laser 211 will irradiate the object to be measured 400, and the irradiation point will be marked as laser marking point 211a. The laser marking point 211a is a mark larger than the diameter of the through hole 110. Since the diameters of the laser 211 and the through hole 110 are very small, the laser marking point 211a can be refracted into the image of the camera 300 through the prism 100. The image of the camera 300 is observed, and the position of the camera 300 is moved until the laser marking point 211a coincides with the lens center area 311 on the lens 310. After the positional relationship between the laser transceiver 200 and the camera 300 is fixed, it can be used for measuring track contact network parameters. During measurement, first observe and move the entire measuring device through the image of the camera 300 until the measuring point of the object 400 to be measured coincides with the center area 311 of the lens. At this time, since the positions of the laser transceiver 200 and the camera 300 have been calibrated, the laser 211 can directly irradiate the object at the center area 311 of the lens in the image of the camera 300, that is, directly irradiate the measuring point.After the laser 211 is irradiated to the measuring point, it is reflected back and received by the optical path receiving module. The optical path receiving module receives the reflected laser 211, generates corresponding data and sends it to the circuit processing unit. The circuit processing unit processes the laser data and generates corresponding measurement results. In addition, the device can be connected to the corresponding client to better observe the picture in the camera 300 and view the final measurement results.

[0032] like Figure 4 As shown, an embodiment of the present invention provides a control method for a laser rail contact network parameter measuring device, which is used to control the laser rail contact network parameter measuring device in the above embodiment, and the control method includes: step S100: calibrating the camera 300 and the laser transceiver 200; step S200: aligning the center area 311 of the lens with the measuring point, and then the laser transmitter 210 emits the laser 211, the optical path receiving module receives the reflected laser 211, and the circuit processing unit processes the data and generates a measurement result; wherein, step S100 includes: step S110: the laser transmitter 210 emits the laser 211 and marks the position irradiated by the laser 211 as the laser marking point 211a, step S120: adjusting the position of the camera 300 so that the center area 311 of the lens coincides with the laser marking point 211a.

[0033] In this embodiment, since the setting of the through hole 110 causes the measuring device to be unable to perform measurements directly, it is necessary to calibrate the positional relationship between the camera 300 and the laser transceiver 200 to ensure that the center area 311 of the lens is consistent with the laser marking point 211a during measurement to ensure the accuracy of the measurement. During calibration, first mark the laser marking point 211a, then keep the position of the laser transceiver 200 stationary, move the camera 300 until the center area 311 of the lens 310 is consistent with the laser marking point 211a in the picture of the camera 300, and fix the positional relationship between the camera 300 and the laser transceiver 200 before measurement can be performed. During measurement, first align the center area 311 of the lens with the measurement point, at which time the laser 211 can directly irradiate the measurement point, the optical path receiving module receives the reflected laser 211, and the circuit processing unit processes the data and generates a measurement result.

[0034] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper" and "lower" etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A laser track contact network parameter measurement device, characterized in that: include: A prism (100), wherein the prism is provided with a through hole (110); A laser transceiver (200), the laser transceiver (200) being provided with a laser emitting head (210), the laser emitting head (210) being used to emit laser light (211), the laser light (211) being irradiated onto the object to be measured (400) through the through hole (110); Camera(300); The image of the object to be measured (400) is refracted by the prism (100) through a reflection path and enters the camera (300).

2. The laser rail contact network parameter measurement device according to claim 1, characterized in that: The prism (100) is provided with a reflective surface (120), and the through hole (110) passes through the reflective surface (120).

3. The laser rail contact network parameter measurement device according to claim 1, characterized in that: The reflection path includes: An incident light path (510), the incident light path (510) leading from the object to be measured (400) to the prism (100); An imaging light path (530), the imaging light path (530) leading from the prism (100) to the camera (300), a refraction light path (520) being connected between the imaging light path (530) and the incident light path (510).

4. The laser rail contact network parameter measuring device according to claim 3 is characterized in that: The through hole (110) is within the path of the incident light path (510).

5. The laser rail contact network parameter measuring device according to claim 4, characterized in that: The diameter of the through hole (110) is no greater than one fiftieth of the width of the incident light path (510).

6. The laser rail contact network parameter measurement device according to claim 1, characterized in that: The laser transceiver (200) further comprises an optical path receiving module and a circuit processing unit, wherein the circuit processing unit is connected to the optical path receiving module and the laser transmitting head (210).

7. The laser rail contact network parameter measurement device according to claim 1, characterized in that: The camera (300) comprises a lens (310), wherein the lens (310) is provided with a lens center area (311).

8. A control method for a laser rail contact network parameter measuring device, used to control the laser rail contact network parameter measuring device according to any one of claims 1 to 7, characterized in that: include: Step S100: calibrating the camera (300) and the laser transceiver (200); Step S200: Align the center area (311) of the lens with the measurement point, then the laser emitting head (210) emits laser light (211), the optical path receiving module receives the reflected laser light (211), and the circuit processing unit processes the data and generates a measurement result.

9. The control method of the laser rail contact network parameter measurement device according to claim 6, characterized in that: The step S100 includes: Step S110: the laser emitting head (210) emits the laser (211) and marks the position irradiated by the laser (211) as a laser marking point (211a); Step S120: adjusting the position of the camera (300) so that the center area (311) of the lens coincides with the laser marking point (211a).

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