A catenary detection device and a catenary detection method

Abstract

The present invention discloses a catenary detection device and a catenary detection method; wherein, the catenary detection device includes a plurality of point laser sensors, lasers emitted by the plurality of point laser sensors form a plurality of laser points on the horizontal plane where the catenary is located, and the distance between two adjacent projection points of the plurality of laser points on the projection plane is less than the diameter of the catenary, and the projection plane is the plane where the cross-section of the catenary is located; during detection, at least one beam of the lasers emitted by the point laser sensors in the on state is made to irradiate the catenary to be detected. The above solution can solve the problems of low detection accuracy and precision existing in the current catenary detection methods.

Description

Technical Field

[0001] The present invention relates to the technical field of catenary detection, and particularly to a catenary detection device and a catenary detection method. Background Art

[0002] During the actual operation of trains in national railways and urban rail transit, the pantograph above the train maintains long-term contact with the catenary of the overhead line so that the train can continuously obtain power from the catenary to ensure the normal operation of the train. Among them, since the catenary maintains long-term contact with the pantograph of the running train, the catenary will be worn at all times, which causes unreliable factors for the train to draw power. Therefore, it is necessary to detect the state of the catenary in real time to ensure the safety and stability of the train during driving.

[0003] There are mainly two detection methods in the prior art; the first one: detecting the catenary by lidar (that is, using a laser emitter for detection), and the specific process is as follows: fixing the point laser sensor at a position and performing point-by-point scanning on the catenary by means of intermittent rotation. For example, it can be scanned once every 5°. However, the following problems will occur: 1. Low accuracy: When the point laser sensor rotates and scans at a fixed angle, the moving distance of the scanning point where the laser actually irradiates the horizontal plane where the catenary is located depends on the actual rotation angle of the point laser sensor. Inevitably, there are control deviations in the actual rotation angle of the point laser sensor, and this control deviation will be significantly amplified as the detection distance increases, resulting in too wide a distance between two scanning points and the problem of not detecting the catenary, seriously affecting the accuracy of catenary detection; 2. Low precision: Because the lidar needs to rotate and swing during the detection process, its own detection precision will also be reduced, and there is also a problem of low detection precision even if the catenary is detected.

[0004] The second one: detecting the catenary by a line laser sensor and a camera. The specific process is as follows: fixing the line laser sensor and the camera at specific positions, the line laser sensor emits a line laser to the catenary, and the camera takes pictures of the laser points emitted by the line laser sensor on the catenary, and calculates the sag according to the size of the laser points on the catenary in the picture. Although this detection method can accurately detect the catenary, the detection precision is relatively low. Summary of the Invention

[0005] The present invention discloses a catenary detection device and a catenary detection method to solve the problems of low detection accuracy and precision existing in the current catenary detection methods.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a catenary detection device, which includes a plurality of point laser sensors. The lasers emitted by the plurality of point laser sensors form a plurality of laser points on the horizontal plane where the catenary is located, and the distance between two adjacent projection points of the plurality of laser points on the projection plane is less than the diameter of the catenary. The projection plane is the plane where the cross-section of the catenary is located.

[0008] Optionally, the catenary detection device further includes a reflection element; the reflection element is arranged facing the point laser sensor and is used to reflect the laser emitted by the point laser sensor to the horizontal plane where the catenary is located.

[0009] Optionally, the number of the reflection elements is equal to the number of the point laser sensors, and one point laser sensor corresponds to one reflection element.

[0010] Optionally, the point laser sensor is arranged facing the horizontal plane where the catenary is located, and the laser emitted by the point laser sensor directly irradiates the horizontal plane where the catenary is located.

[0011] Optionally, the catenary detection device further includes a fixing base; the fixing base is provided with a plurality of adjusting mechanisms, and one point laser sensor is arranged on a corresponding adjusting mechanism, and the angle of the point laser sensor on the fixing base can be adjusted through the adjusting mechanism.

[0012] Optionally, the adjusting mechanism includes an adjusting seat and a locking bolt; the adjusting seat is rotatably connected to the fixing base, and the fixing base is provided with an arc-shaped guiding hole. The screw end of the locking bolt passes through the arc-shaped guiding hole and is matched with the threaded hole of the adjusting seat.

[0013] Optionally, the fixing base is provided with a through hole; the adjusting seat is provided with a convex part that is rotatably matched with the through hole, and the convex part passes through the through hole and is connected with a detachable limiting member; the limiting member is used for limiting and cooperating with the end face of the through hole on the side away from the adjusting seat.

[0014] In a second aspect, based on the above catenary detection device, the present invention further provides a catenary detection method, which includes a controller and the above catenary detection device. The controller is connected to a plurality of point laser sensors in the catenary detection device; during detection, the controller controls the on and off states of the plurality of point laser sensors, and at least one beam of the laser emitted by the point laser sensors in the on state hits the catenary.

[0015] Optionally, the controller controls the on / off states of the multiple point laser sensors according to the erection mode of the catenary; when the catenary detection device moves to the single-bracket erection position of the catenary, the controller controls the point laser sensors that can irradiate the catenary and the point laser sensors adjacent to the point laser sensor to be in the on state, and the remaining point laser sensors to be in the off state; when the catenary detection device moves to a non-single-bracket erection position of the catenary, the controller controls all the multiple point laser sensors to be in the on state.

[0016] Optionally, the processor of the catenary detection device obtains the erection mode of the catenary according to the detection results of the multiple point laser sensors and / or the catenary line data information pre-stored in the memory, and controls the on / off states of the multiple point laser sensors through the controller.

[0017] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0018] The catenary detection device and the catenary detection method disclosed by the present invention emit lasers through a plurality of point laser sensors, so that the lasers emitted by the plurality of point laser sensors form a plurality of laser points on the horizontal plane where the catenary is located, and the distance between two adjacent projection points of the plurality of laser points on the projection plane is less than the diameter of the catenary. The projection plane is the plane where the cross-section of the catenary is located, so as to ensure that at least one of the lasers emitted by the plurality of point laser sensors can irradiate the catenary to be detected, thereby avoiding the continuous rotation and swinging scanning of the point laser sensors, and enabling the detection device to accurately detect the catenary; therefore, compared with the laser radar rotation scanning method in the prior art, the catenary detection device disclosed by the present invention can improve the accuracy and precision of catenary detection. Description of the Drawings

[0019] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a schematic structural diagram of the catenary detection device disclosed in the embodiment of the present invention;

[0021] Figure 2 is Figure 1 a schematic diagram of the distribution of the lasers emitted by the catenary detection device on the horizontal plane where the catenary is located;

[0022] Figure 3 is a schematic diagram of the distribution of the lasers emitted by the multiple point laser sensors arranged in an arc shape in the embodiment of the present invention on the horizontal plane where the catenary is located;

[0023] Figure 4 Schematic diagram of the distribution of the laser emitted by multiple point laser sensors arranged in a double row on the horizontal plane where the contact wire is located in the embodiments of the present invention;

[0024] Figure 5 Schematic cross-sectional structure diagram of the assembly of the adjusting seat and the fixing seat in the embodiments of the present invention;

[0025] Figure 6 Schematic diagram of a contact wire detection process in the embodiments of the present invention;

[0026] Figure 7 Schematic diagram of another contact wire detection process in the embodiments of the present invention;

[0027] Description of reference numerals:

[0028] 100 - Point laser sensor, 101 - Laser emission end, 102 - Laser reception end, 110 - Laser point,

[0029] 200 - Reflective element,

[0030] 300 - Fixing seat, 301 - Arc-shaped guiding hole, 302 - Locking bolt, 310 - Adjusting seat, 311 - Convex part,

[0031] 312 - Adjusting groove, 320 - Limiting part,

[0032] 400 - Contact wire, 401 - Plane where the cross-section of the contact wire is located,

[0033] 500 - Inflection point, 501 - Non-single support area. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments and corresponding drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The following will describe in detail the technical solutions disclosed in each embodiment of the present invention with reference to the drawings.

[0036] Embodiment 1

[0037] Please refer to Figures 1 to 4As shown in the figure, an embodiment of the present invention discloses a catenary detection device. The disclosed catenary detection device includes a plurality of point laser sensors 100. The lasers emitted by the plurality of point laser sensors 100 form a plurality of laser points 110 on the horizontal plane where the catenary 400 is located, and the distance between two adjacent projection points of the plurality of laser points 110 on the projection plane 401 is less than the diameter of the catenary 400. The projection plane 401 is the plane where the cross-section of the catenary 400 is located.

[0038] Among them, by arranging a plurality of point laser sensors 100, the lasers emitted by the plurality of point laser sensors 100 form a plurality of laser points 110 on the horizontal plane where the catenary 400 is located, and the distance between two adjacent projection points of the plurality of laser points 110 on the projection plane 401 is less than the diameter of the catenary 400. The projection plane 401 is the plane where the cross-section of the catenary 400 is located. Thus, when the catenary detection device moves to the erection position of the catenary 400 for detection, it is ensured that at least one of the lasers emitted by the plurality of point laser sensors 100 can irradiate the catenary 400 to be detected, so that the detection device can accurately detect the catenary 400. Therefore, compared with the detection method of rotating and scanning by a lidar in the prior art, the catenary detection device disclosed in the present invention can improve the accuracy and precision of catenary 400 detection.

[0039] Specifically, as Figure 1 shown, the plurality of point laser sensors 100 can be arranged in a row, so that as Figure 2 shown, the plurality of laser points 110 formed by the lasers emitted by the plurality of point laser sensors 100 on the horizontal plane where the catenary 400 is located are distributed on the same straight line; or, the plurality of point laser sensors 100 can also be arranged in two rows, so that as Figure 4 shown, the plurality of laser points 110 formed by the lasers emitted by the plurality of point laser sensors 100 on the horizontal plane where the catenary 400 is located are distributed on two straight lines; or, the plurality of point laser sensors 100 can also be arranged in an arc arrangement, so that as Figure 3 shown, the plurality of laser points 110 formed by the lasers emitted by the plurality of point laser sensors 100 on the horizontal plane where the catenary 400 is located are distributed on an arc curve.

[0040] However, it should be noted that no matter what arrangement and setting method the multiple point laser sensors 100 adopt, it is necessary to make the lasers emitted by the multiple point laser sensors 100 form multiple laser points 110 on the contact surface, and the distance between two adjacent projection points of the multiple laser points 110 on the projection plane 401 is less than the diameter of the contact line 400. The projection plane 401 is the plane where the cross-section of the contact line 400 is located, so as to ensure that at least one of the multiple lasers emitted by the multiple point laser sensors 100 will always irradiate the contact line 400.

[0041] Preferably, the distance between two adjacent projection points of the multiple laser points 110 on the projection plane 401 is less than the radius of the contact line 400. The projection plane 401 is the plane where the cross-section of the contact line 400 is located, so as to ensure that the area of the laser points 110 irradiating the contact line 400 can reach more than 50% of the area of the laser points 110, and better ensure the detection accuracy and precision of the contact line detection device in this embodiment.

[0042] In the contact line detection device disclosed in this embodiment, as a setting method for the point laser sensor 100 to emit laser to the horizontal plane where the contact line 400 is located, the laser emitted by the point laser sensor 100 can irradiate the horizontal plane where the contact line 400 is located in an indirect manner; specifically, as Figure 1 shown, the contact line detection device may further include a reflection element 200. The reflection element 200 is arranged facing the point laser sensor 100. Thus, not only can the point laser sensor 100 adopt a flat setting method through the reflection element 200, thereby reducing the center of gravity and being beneficial to the stable movement of the contact line detection device, but also the reflection element can block natural light, avoiding the interference of outdoor natural light on the laser receiving end 102 of the point laser sensor 100, and further better ensuring the detection accuracy and precision of the contact line detection device.

[0043] When detecting the catenary 400, the laser emitted from the laser emission end 101 of each point laser sensor 100 in the catenary detection device can irradiate on the reflection element 200, and under the reflection of the reflection element 200, the laser is reflected to the horizontal plane where the catenary 400 is located, so that the laser can irradiate on the catenary 400; then, the catenary 400 reflects the laser irradiated on it back to the reflection element 200 again, and the reflection element 200 reflects the reflected laser to the laser receiving end 102 of the corresponding point laser sensor 100; at the same time, after the laser receiving end 102 receives the laser reflected back by the reflection element 200, a processor (not shown in the figure) connected to the laser emission end 101 and the laser receiving end 102 will calculate the distance S from the catenary 400 to the catenary detection device according to the time T from the laser emitted from the laser emission end 101 to the laser received by the laser receiving end 102, and the propagation speed V (fixed value) of the laser in the air, and then calculate the sag value L of the catenary according to the height of the catenary detection device.

[0044] Specifically, the reflection element 200 can be a right-angle prism or a plane mirror; the number of the reflection elements 200 provided can be equal to the number of the point laser sensors 100 provided, and one point laser sensor 100 corresponds to one reflection element 200, so that when adjusting the angles of the respective point laser sensors 100, the corresponding respective reflection elements 200 can be adaptively adjusted.

[0045] Of course, the number of the reflection elements 200 provided can also be different from the number of the point laser sensors 100 provided; for example, multiple point laser sensors 100 can share one reflection element 200, and the present embodiment does not make any limitation on the type and number of the reflection elements 200.

[0046] As another setting method of the point laser sensor 100, multiple point laser sensors 100 can also be arranged facing the horizontal plane where the catenary 400 is located, so that the laser emission end 101 of each point laser sensor 100 can directly emit laser to the horizontal plane where the catenary 400 is located and irradiate on the catenary 400; then, the catenary 400 reflects the laser irradiated on it back to the laser receiving end 102 of the corresponding point laser sensor 100; or, multiple point laser sensors 100 can also be arranged in a way that some point laser sensors 100 directly emit laser to the horizontal plane where the catenary 400 is located, and some point laser sensors 100 are arranged in a way that they indirectly emit laser to the horizontal plane where the catenary 400 is located through the reflection element 200.

[0047] To facilitate the setting of multiple point laser sensors 100, the catenary detection device disclosed in this embodiment may further include a fixing base 300. Thus, the fixing base 300 can provide an installation and bearing foundation for the setting of each point laser sensor 100, enabling the point laser sensor 100 to be set on the fixing base 300. At the same time, the catenary detection device can be conveniently installed on a non-contact measurement device through the fixing base 300. The non-contact measurement device can be a non-contact fixed-point measurement device or a non-contact continuous measurement device. Further, the non-contact measurement device can be a hand-pushed inspection device or an automatic inspection device. The present application does not impose any limitation on the setting carrier of the catenary detection device.

[0048] Preferably, a plurality of adjusting mechanisms are provided on the fixing base 300, and a point laser sensor 100 is set on a corresponding adjusting mechanism, and the angle of the point laser sensor 100 on the fixing base 300 can be adjusted through the adjusting mechanism. Therefore, under different working conditions, the angles of the respective point laser sensors 100 can be adaptively adjusted or calibrated, so that the lasers emitted by the multiple point laser sensors 100 form a plurality of laser points 110 on the horizontal plane where the catenary 400 is located, and the distance between two adjacent projection points of the plurality of laser points 110 on the plane 401 where the cross-section of the catenary 400 is located is less than the diameter of the catenary 400 to be detected, thereby better ensuring the detection effect and adaptability of the catenary detection device.

[0049] Specifically, the adjusting mechanism may include an adjusting seat 310 and a locking bolt 302. The adjusting seat 310 is rotatably connected to the fixing base 300. The fixing base 300 is provided with an arc-shaped guiding hole 301. The screw end of the locking bolt 302 passes through the arc-shaped guiding hole 301 and cooperates with the threaded hole of the adjusting seat 310.

[0050] When it is necessary to adjust or calibrate the angle of the point laser sensor 100, loosen the locking bolt 302, so that the screw of the locking bolt 302 can slide along the guidance of the arc-shaped guiding hole 301, and drive the point laser sensor 100 to rotate together by rotating the adjusting seat 310. Thus, the angle adjustment or calibration of the point laser sensor 100 is realized, and after the adjusting seat 310 rotates to the required angle, tighten the locking bolt 302, thereby realizing the fixation of the adjusted or calibrated angle of the point laser sensor 100 and preventing the point laser sensor 100 from rotating and affecting the working reliability of the catenary detection device.

[0051] As a specific manner of the rotational connection between the adjusting seat 310 and the fixing base 300, the fixing base 300 may be provided with a through hole, the adjusting seat 310 may be provided with a convex portion 311 that is rotationally matched with the through hole, and the convex portion 311 passes through the through hole and is connected with a detachable limiting member 320. For example Figure 5As shown, the limiting member 320 is used for limiting cooperation with the end face on the side of the through hole facing away from the adjusting seat 310.

[0052] Among them, through the convex portion 311, not only can the rotational cooperation between the adjusting seat 310 and the fixed seat 300 be realized, but also the convex portion 311 can bear the weight of the adjusting seat 310 and the dot laser sensor 100 arranged on the adjusting seat 310; moreover, the convex portion 311 is detachably connected to the limiting member 320, and the assembly and fixation of the convex portion 311 and the fixed seat 300 are realized through the limiting cooperation between the limiting member 320 and the end face on the side of the through hole facing away from the adjusting seat 310. It is easy to understand that in order to enable the convex portion 311 to rotate in cooperation with the through hole, the cross-sectional shapes of the convex portion 311 and the through hole should be set to be circular.

[0053] Meanwhile, the limiting member 320 can be an annular member, and the inner diameter of the annular member is smaller than the diameter of the convex portion 311, and the outer diameter of the annular member is larger than the diameter of the convex portion 311; so that at least two mounting holes can be opened in the overlapping part of the annular member and the end face of the convex portion 311, and then fasteners such as screws or bolts are passed through the corresponding mounting holes to realize the detachable connection between the convex portion 311 and the limiting member 320; and the part of the annular member extending out of the end face of the convex portion 311 can abut against the end face on the side of the through hole facing away from the adjusting seat 310 to form a limiting cooperation structure.

[0054] In order to enable the annular member to be embedded in the fixed seat 300 to ensure the flatness of the surface of the fixed seat 300, the through hole can be set as a stepped hole, and the part of the annular member extending out of the end face of the convex portion 311 is placed on the step surface of the stepped hole for limiting and fixing, and the annular member is embedded in the stepped hole to avoid the problem of the annular member protruding from the surface of the fixed seat 300 and causing interference when the fixed seat 300 is installed with a setting carrier or the like, achieving the purpose of making way.

[0055] Preferably, an adjusting groove 312 is arranged at the end face position of the convex portion 311 corresponding to the inner hole of the annular member; during adjustment, an adjusting tool can be passed through the inner hole of the annular member and inserted into the adjusting groove 312 of the convex portion 311, so as to drive the convex portion 311 to rotate by rotating the adjusting tool, and further realize the precise angle adjustment of the adjusting seat 310; the adjusting groove 312 can be designed into various shapes such as an inner triangle or an inner hexagon, and the present embodiment does not limit the shape of the adjusting groove 312. Correspondingly, the head of the adjusting tool is adapted to the shape of the adjusting groove 312, so that the head of the adjusting tool can be stuck into the adjusting groove 312 to drive the convex portion 311 to rotate together.

[0056] Embodiment 2

[0057] Based on the catenary detection device disclosed in the above-mentioned Embodiment 1, this embodiment discloses a catenary detection method. The disclosed catenary detection method includes a controller and the catenary detection device in the above-mentioned Embodiment 1. The controller is connected to multiple point laser sensors 100 in the catenary detection device. During detection, the controller controls the on and off states of the multiple point laser sensors 100, and at least one beam of the laser emitted by the on point laser sensors 100 irradiates the catenary 400 to be detected. The laser that irradiates the catenary 400 is reflected by the catenary 400 and then returns to the processor of the catenary detection device, thereby realizing the detection of the catenary 400.

[0058] As a first implementable manner for the controller to control the multiple point laser sensors 100, when detecting the catenary 400, the controller controls all the multiple point laser sensors 100 in the catenary detection device to be in the on state at both the single support position and the non-single support position of the catenary 400, so that the catenary detection device can accurately detect the catenary 400 in all directions, but the energy consumption is relatively high.

[0059] As a second implementable manner for the controller to control the multiple point laser sensors 100, when detecting the catenary 400, the controller can control the on and off states of the multiple point laser sensors 100 according to the erection method of the catenary 400. When the catenary detection device moves to the single support position of the catenary 400, the controller controls the point laser sensors 100 that can irradiate on the catenary and the point laser sensors 100 adjacent to this point laser sensor 100 to be in the on state, and the remaining point laser sensors 100 are in the off state. When the catenary detection device moves to the non-single support position of the catenary 400, the controller controls all the multiple point laser sensors 100 to be in the on state.

[0060] Among them, compared with the first implementable manner, the second implementable manner makes the on and off control of the multiple point laser sensors 100 intelligent, that is, the controller can control whether all the multiple point laser sensors 100 are turned on, or some are turned on and some are turned off according to the single support and non-single support positions of the catenary detection. Thus, the detection of the catenary 400 is realized, and the working mode of keeping all the point laser sensors 100 always turned on during the whole detection process is avoided, thereby achieving the purpose of energy saving.

[0061] Specifically, the control receiving end of the controller can be connected to the control output end of the processor of the catenary detection device. The processor of the catenary detection device can obtain the erection method of the catenary 400 according to the detection results of the multiple point laser sensors 100, and control the on and off states of the multiple point laser sensors 100 through the controller. The process of obtaining the erection method of the catenary 400 is as follows:Figure 6 As shown, when detecting the catenary 400, the processor first controls all the point laser sensors 100 in the catenary detection device to turn on through the controller (such as at position A), so that the catenary detection device moves a certain distance on the track (that is, moves from position A to position B). The processor can determine and identify the erection method of the catenary 400 as single-bracket erection according to the laser signals received by the laser receiving ends 102 of the point laser sensors 100 in this section of the distance. Then, through the controller, the point laser sensors 100 that can irradiate on the catenary 400 and the point laser sensors adjacent to this point laser sensor 100 among the multiple point laser sensors 100 of the catenary detection device are controlled to be in the on state, and the remaining point laser sensors are in the off state (such as at positions C and D); among them, Figure 6 The black dots shown in represent that the point laser sensors 100 are in the on state, the white dots represent that the point laser sensors 100 are in the off state, and the straight line with an arrow represents the moving direction of the catenary detection device on the track.

[0062] Alternatively, the processor of the catenary detection device can also obtain the erection method of the catenary 400 according to the catenary 400 line data information. The catenary 400 line data information can include data information such as the distance between two inflection points of a single-branch section, the stagger value of the catenary 400, and the spacing between double branches, and is pre-stored in the memory of the catenary detection device or a separately provided memory, and the processor is connected to the memory; the process of obtaining the erection method of the catenary 400 is as follows: As Figure 7 shown, the processor first controls all the point laser sensors 100 in the catenary detection device to turn on through the controller (such as at position A), so that the catenary detection device moves on the track. When the catenary detection device moves to the inflection point 500 of the single-branch section of the catenary 400 (such as at position B), the processor determines and identifies the erection method of the catenary 400 as single-bracket erection according to the catenary 400 line data information stored in the memory. Then, through the controller, the point laser sensors 100 that can irradiate on the catenary 400 and the point laser sensors adjacent to this point laser sensor 100 among the multiple point laser sensors 100 of the catenary detection device are controlled to be in the on state, and the remaining point laser sensors are in the off state (such as at positions C and D); when the catenary detection device moves to position E, the processor determines and identifies that the erection method of the catenary 400 is non-single-bracket erection according to the catenary 400 line data information stored in the memory, and then through the controller, all the multiple point laser sensors 100 of the catenary detection device are controlled to be in the on state; among them, Figure 7 The black dots shown in represent that the point laser sensors 100 are in the on state, the white dots represent that the point laser sensors 100 are in the off state, and the straight line with an arrow represents the moving direction of the catenary detection device on the track.

[0063] Alternatively, the processor of the catenary detection device may also obtain the erection method of the catenary 400 by combining the detection results of the multiple point laser sensors 100 and the catenary line data information pre-stored in the memory, and then control whether all of the multiple point laser sensors 100 of the catenary detection device are turned on, or partially turned on and partially turned off through the controller.

[0064] In the above embodiments of the present invention, the differences between the embodiments are mainly described. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity of the description, they will not be repeated here.

[0065] The above are only the embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for detecting a contact wire, characterized in that, Applied to a contact line detection device, the contact line detection device comprises a plurality of point laser sensors, the lasers emitted by the plurality of point laser sensors form a plurality of laser points on a horizontal plane where the contact line is located, and the spacing between two adjacent projection points of the plurality of laser points on a projection plane is smaller than the diameter of the contact line, and the projection plane is the plane where the cross section of the contact line is located; The controller is connected to the multiple point laser sensors in the contact line detection device and is used to control the opening and closing of the multiple point laser sensors; The contact line detection method comprises: The controller controls the on and off states of the multiple point laser sensors, and at least one laser beam emitted by the point laser sensor in the on state irradiates the contact line; the controller controls the on and off states of the multiple point laser sensors according to the installation method of the contact line; when the contact line detection device moves to the single-bracket installation position of the contact line, the controller controls the point laser sensors among the multiple point laser sensors that can irradiate the contact line and the point laser sensors adjacent to the point laser sensors to be in the on state, and the remaining point laser sensors are in the off state; when the contact line detection device moves to the non-single-bracket installation position of the contact line, the controller controls all the multiple point laser sensors to be in the on state.

2. The catenary detection method according to claim 1, characterized in that, The contact line detection device further comprises a reflective element, which is arranged facing the point laser sensor and is used to reflect the laser emitted by the point laser sensor to the horizontal plane where the contact line is located.

3. The contact wire detection method according to claim 2, wherein The number of the reflective elements is equal to the number of the point laser sensors, and one point laser sensor corresponds to one reflective element.

4. The contact wire detection method according to claim 1, characterized in that, The point laser sensor is arranged facing the horizontal plane where the contact line is located, and the laser emitted by the point laser sensor directly irradiates the horizontal plane where the contact line is located.

5. The catenary detection method according to any one of claims 1 to 4, characterized in that, The contact line detection device also includes a fixing seat; the fixing seat is provided with a plurality of adjustment mechanisms, and one of the point laser sensors is arranged on a corresponding one of the adjustment mechanisms, and the angle of the point laser sensor on the fixing seat can be adjusted by the adjustment mechanism.

6. The contact wire detection method according to claim 5, characterized in that The adjustment mechanism includes an adjustment seat and a locking bolt; the adjustment seat is rotatably connected to the fixing seat, and the fixing seat is provided with an arc-shaped guide hole, the screw end of the locking bolt passes through the arc-shaped guide hole and cooperates with the threaded hole of the adjustment seat.

7. The method for detecting a catenary according to claim 6, characterized in that, The fixing seat is provided with a through hole; the adjusting seat is provided with a convex portion rotatably matched with the through hole, and the convex portion passes through the through hole and is connected with a detachable limiting member; the limiting member is used for limiting and matching with the end face of one side of the through hole away from the adjusting seat.

8. The contact wire detection method according to claim 1, characterized in that, The processor of the contact line detection device obtains the installation method of the contact line according to the detection results of the multiple point laser sensors and / or the contact line line data information pre-stored in the memory, and the controller controls the opening and closing states of the multiple point laser sensors according to the installation method of the contact line obtained by the processor.

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