Comparative evaluation device and method for measuring accuracy of arcing time of bow-catenary

Abstract

The present invention is a comparative evaluation device and method for measuring the arcing time accuracy of a bow-net, the comparative evaluation device comprising: a light source; a light bar disk that can rotate along its central axis, with a plurality of light holes spaced and evenly arranged along its circumference on the light bar disk; a first spectroscopic monochromator and a second spectroscopic monochromator, the light inlet of the first spectroscopic monochromator and the light inlet of the second spectroscopic monochromator facing the light bar disk respectively, and a to-be-detected element being arranged at the light outlet of the second spectroscopic monochromator; a standard detector, the standard detector being arranged at the light outlet of the first spectroscopic monochromator; a processing device, the processing device being used to compare the first time parameter collected by the standard detector with the second time parameter collected by the to-be-detected element, so as to determine the measurement accuracy of the to-be-detected element for the arcing time of the bow-net. The present invention solves the technical problem that it is impossible to accurately know the accuracy of the detection element for measuring the offline arcing time of the bow-net.

Description

Technical Field

[0001] The present invention relates to the technical field of off-line arcing time measurement of a bow-catenary, and in particular to a comparative evaluation device and method for the measurement accuracy of arcing time of a bow-catenary. Background Art

[0002] During the operation of high-speed trains, the vibration of the pantograph-catenary system caused by the uneven elastic distribution of the contact suspension causes the pantograph to separate from the contact, which is called offline phenomenon. Once the pantograph is offline, it is accompanied by arc discharge. The arc sparks generated will burn the contact wire and the pantograph slide plate, shortening their service life; the high-frequency electromagnetic waves generated will cause radio noise interference to the surrounding communication lines; and the offline current changes steeply, which will also cause the locomotive traction transformer to withstand high-frequency oscillation overvoltage. The offline of the pantograph-catenary brings many negative effects to the electrified railway operation system. Therefore, the determination of the offline arcing time of the pantograph-catenary is of great significance to the normal operation of the train.

[0003] At present, flame sensors are mostly used to measure the offline arcing time of the bow and catenary. The characteristic of flame sensors is that they are highly sensitive to changes in light intensity. Even if there is no offline arcing of the bow and catenary, the flame sensor will send out discrete pulse signals due to the influence of external light when the natural light changes or when the locomotive enters and exits a tunnel. Therefore, it is often misjudged as offline arcing of the bow and catenary, resulting in unsatisfactory accuracy in the measurement of the offline arcing time of the bow and catenary. In addition, when the bow and catenary arcs offline, the flame sensor can instantly sense and send out a pulse signal. The duration of the continuous output of the pulse is determined as the offline arcing time of the bow and catenary. The continuity of the pulse makes it difficult to define how long a continuous pulse is, so misjudgment often occurs.

[0004] With regard to the problem in the related art that it is impossible to accurately know the accuracy of the detection element used in measuring the offline arcing time of the bow-catenary, no effective solution has been given so far.

[0005] Therefore, the inventor, relying on his many years of experience and practice in related industries, proposes a comparative evaluation device and method for the measurement accuracy of the arcing time of the bow-catenary, so as to overcome the defects of the prior art. Summary of the invention

[0006] The object of the present invention is to provide a comparative evaluation device and method for the measurement accuracy of the arcing time of the bow-catenary, which adopts a light source and a spectroscopic monochromator to simulate the light spectrum of the bow-catenary arcing, and can simulate the arcing time of the bow-catenary through an optical shutter structure. By comparing the first time parameter collected by the quasi-detector with the second time parameter collected by the element to be detected, the measurement accuracy of the arcing time of the bow-catenary by the element to be detected can be obtained with high accuracy, avoiding misjudgment.

[0007] The purpose of the present invention can be achieved by adopting the following scheme:

[0008] The present invention provides a device for comparing and evaluating the measurement accuracy of the arcing time of a pantograph and a catenary, and the device for comparing and evaluating the measurement accuracy of the arcing time of a pantograph and a catenary comprises:

[0009] light source;

[0010] A light barrier plate capable of rotating along its central axis, wherein a plurality of light holes are evenly and spaced apart along its circumference;

[0011] A first spectroscopic monochromator and a second spectroscopic monochromator, wherein the light entrance of the first spectroscopic monochromator and the light entrance of the second spectroscopic monochromator are respectively oriented toward the light barrier plate, and a to-be-detected element is disposed at the light exit of the second spectroscopic monochromator;

[0012] A standard detector, which is arranged at the light outlet of the first spectroscopic monochromator;

[0013] A processing device is used to compare the first time parameter collected by the standard detector with the second time parameter collected by the component to be detected, so as to determine the measurement accuracy of the arcing time of the bow-catenary by the component to be detected.

[0014] In a preferred embodiment of the present invention, the comparative evaluation device for measuring the arcing time accuracy of the bow-net also includes a vertically arranged mounting plate and a driving motor, the mounting plate has a hollow portion adapted to the light barrier disk, the light barrier disk is rotatably embedded in the hollow portion, the driving motor is located on one side of the light barrier disk, and the output shaft of the driving motor is connected to the axial position of the light barrier disk, the output shaft of the driving motor drives the light barrier disk to rotate periodically, so as to form an optical shutter structure through the cooperation between the driving motor and the light barrier disk.

[0015] In a preferred embodiment of the present invention, the comparative evaluation device for measuring the arcing time of the bow-catenary further comprises a dark box, and at least the light barrier disk is located in the dark box.

[0016] In a preferred embodiment of the present invention, the plurality of light holes are arranged centrally and symmetrically on the light barrier plate, the first spectroscopic monochromator and the second spectroscopic monochromator are symmetrically arranged on both sides of a vertical line passing through the center position of the light barrier plate, and the light entrance port of the first spectroscopic monochromator and the light entrance port of the second spectroscopic monochromator are located at the same height;

[0017] When the light barrier disk is in the rotating state, the light emitted by the light source passes through the two light holes symmetrical about the vertical line passing through the center position of the light barrier disk and is respectively incident on the light entrance port of the first spectroscopic monochromator and the light entrance port of the second spectroscopic monochromator.

[0018] In a preferred embodiment of the present invention, the light source is arranged in a light source box, and light exit holes are respectively opened on two opposite side walls of the light source box. Light projection components are arranged at the light exit holes, and the two light projection components are symmetrically arranged on both sides of the light source. The light projection components are used to project the light emitted from the light exit holes onto the light barrier plate.

[0019] In a preferred embodiment of the present invention, the light projection assembly includes a light emitting element and a light focusing element, the light entrance of the light emitting element is connected to the light exit hole, the light exit of the light emitting element is connected to the light entrance of the light focusing element, the light exit of the light focusing element is arranged toward the light barrier disk, the light emitting element is used to change the direction of the light so that the light is emitted toward the light barrier disk; the light focusing element is used to converge the light so that the light is concentrated toward the light barrier disk.

[0020] In a preferred embodiment of the present invention, the light emitting element includes a 45-degree reflector; and / or the light collecting element includes a focusing mirror.

[0021] In a preferred embodiment of the present invention, the light projection components located on both sides of the light source box are symmetrical about a vertical line passing through the center position of the light barrier plate.

[0022] In a preferred embodiment of the present invention, the standard detector includes a photomultiplier tube; and / or the element to be detected includes a photomultiplier tube or a phototube.

[0023] In a preferred embodiment of the present invention, the processing device comprises a photoelectric converter, and a signal receiving end of the photoelectric converter is electrically connected to a signal output end of the standard detector through a data transmission line.

[0024] In a preferred embodiment of the present invention, the standard detector is directly installed at the light outlet of the first spectroscopic monochromator;

[0025] The comparative evaluation device for measuring the arcing time accuracy of the bow-catenary also includes a lifting device, and the element to be detected is arranged on the lifting device to adjust the height of the element to be detected so that the standard detector and the element to be detected are located on the same horizontal line.

[0026] In a preferred embodiment of the present invention, the light source is a UV-enhanced xenon lamp.

[0027] The present invention provides a comparative evaluation method for measuring the arcing time of a bow and a catenary, and the comparative evaluation method for measuring the arcing time of a bow and a catenary comprises the following steps:

[0028] Setting the first spectroscopic monochromator and the second spectroscopic monochromator to split the light into a preset light spectrum;

[0029] The light source outputs light;

[0030] Driving the light barrier plate to rotate at a preset speed, so that the light passes through two light holes located at symmetrical positions on the light barrier plate and then enters the first spectroscopic monochromator and the second spectroscopic monochromator respectively;

[0031] The light after being split by the first spectroscopic monochromator enters the standard detector and obtains a first time parameter, and the light after being split by the second spectroscopic monochromator enters the element to be detected and obtains a second time parameter;

[0032] The first time parameter is compared with the second time parameter to determine the measurement accuracy of the arcing time of the bow-catenary by the component to be detected.

[0033] In a preferred embodiment of the present invention, the light source is a UV-enhanced xenon lamp to output a full-spectrum light source.

[0034] In a preferred embodiment of the present invention, the preset light spectrum segments of the first spectroscopic monochromator and the second spectroscopic monochromator are set to be the light spectrum segments of the bow-catenary arcing required for detection.

[0035] In a preferred embodiment of the present invention, the first time parameter includes the first starting time when the standard detector obtains the light passing through the light hole, and the second time parameter includes the second starting time when the element to be detected obtains the light passing through the light hole;

[0036] If the difference between the second starting time and the first starting time is within a preset starting time range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirement.

[0037] In a preferred embodiment of the present invention, the first time parameter includes the first termination time when the standard detector obtains that the light passes through the light hole, and the second time parameter includes the second termination time when the element to be detected obtains that the light passes through the light hole;

[0038] If the difference between the second termination time and the first termination time is within a preset termination time range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirements.

[0039] In a preferred embodiment of the present invention, the first time parameter includes a first time length for the standard detector to obtain that the light passes through the light hole, and the second time parameter includes a second time length for the element to be detected to obtain that the light passes through the light hole;

[0040] If the difference between the second time length and the first time length is within a preset time length range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirements.

[0041] As described above, the characteristics and advantages of the comparative evaluation device for measuring the arcing time of the pantograph and the catenary of the present invention are:

[0042] A light source and two spectroscopic monochromators (i.e., a first spectroscopic monochromator and a second spectroscopic monochromator) are respectively arranged on both sides of the light barrier plate. The light source is used to provide a full-spectrum light source, and the spectroscopic monochromator can be used to perform spectroscopic processing on the full-spectrum light source to obtain a light spectrum segment that is the same as the bow-catenary arc to be detected. Therefore, the present invention can achieve the purpose of simulating the light spectrum segment of the bow-catenary arc through the coordinated setting of the light source and the spectroscopic monochromator.

[0043] In addition, the light barrier disk is rotatable and a plurality of light holes are evenly spaced along its circumference. During the rotation of the light barrier disk, the light emitted by the light source can periodically pass through the light holes at corresponding positions and enter the first spectroscopic monochromator and the second spectroscopic monochromator. The rotating light barrier disk can be regarded as an optical shutter for simulating the arcing time of the bow network (that is, the time for the light to pass through the light holes at corresponding positions during the rotation of the light barrier disk). After the first spectroscopic monochromator and the second spectroscopic monochromator perform spectrometry, the light is respectively transmitted to the standard detector and the element to be detected. During this process, the standard detector can collect the first time parameter of the light irradiation, and the element to be detected can collect the second time parameter of the light irradiation, and the first time parameter is compared with the second time parameter, so as to judge the measurement accuracy of the arcing time of the bow network by the element to be detected, with high accuracy, and avoid misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0045] Figure 1 This is one of the three-dimensional diagrams of the device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to the present invention;

[0046] Figure 2 This is the second stereogram of the device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to the present invention;

[0047] Figure 3 A top view of a device for comparing and evaluating the measurement accuracy of arcing time of a bow-catenary according to the present invention;

[0048] Figure 4 It is a schematic diagram of the connection structure of the light barrier plate and the driving motor in the comparative evaluation device for measuring accuracy of the arcing time of the bow-catenary according to the present invention;

[0049] Figure 5The present invention is a flowchart of a comparative evaluation method for measuring the arcing time of a bow and a catenary.

[0050] The accompanying drawings in the present invention are:

[0051] 1. Light source box; 2. Light projection assembly;

[0052] 201, light emitting element; 202, light focusing element;

[0053] 3. Light barrier plate; 301. Light hole;

[0054] 4. Optical shutter structure; 5. First spectroscopic monochromator;

[0055] 6. Second spectroscopic monochromator; 7. Standard detector;

[0056] 8. Components to be tested; 9. Data transmission line;

[0057] 10. Photoelectric converter; 11. First base;

[0058] 12. Second base; 13. Lifting device;

[0059] 14. Driving motor; 15. Mounting plate. DETAILED DESCRIPTION

[0060] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0061] Implementation Method 1

[0062] like Figures 1 to 4 As shown, the present invention provides a comparative evaluation device for measuring the arcing time accuracy of a bow-net, the comparative evaluation device for measuring the arcing time accuracy of a bow-net comprises a light source (which is arranged in a light source box 1, not directly shown in the figure), a light barrier plate 3 which can rotate along its central axis, a first spectroscopic monochromator 5, a second spectroscopic monochromator 6, a standard detector 7 and a processing device, the light barrier plate 3 is a vertically arranged disk (that is, the central axis of the light barrier plate 3 extends in the horizontal direction), a plurality of light holes 301 are evenly arranged along its circumference at intervals, a light inlet of the first spectroscopic monochromator 5 and a second spectroscopic monochromator 6, a standard detector 7 and a processing device, the light barrier plate 3 is a vertically arranged disk (that is, the central axis of the light barrier plate 3 extends in the horizontal direction), a plurality of light holes 301 are evenly arranged along its circumference, a light inlet of the first spectroscopic monochromator 5 and a second spectroscopic monochromator 6, a standard detector 7 and a processing device, The light inlets of the spectroscopic monochromator 6 are respectively directed toward the light barrier disk 3, and a to-be-detected element 8 is arranged at the light outlet of the second spectroscopic monochromator 6, and the standard detector 7 is arranged at the light outlet of the first spectroscopic monochromator 5. The standard detector 7 can collect the light emitted from the light outlet of the first spectroscopic monochromator 5, and can obtain the first time parameter, and the to-be-detected element 8 can collect the light emitted from the light outlet of the second spectroscopic monochromator 6, and can obtain the second time parameter. The first time parameter is compared with the second time parameter through the processing device to determine the measurement accuracy of the arc burning time of the bow network by the to-be-detected element 8.

[0063] In the present invention, a light source and two spectroscopic monochromators (i.e., a first spectroscopic monochromator 5 and a second spectroscopic monochromator 6) are respectively arranged on both sides of the light barrier plate 3. The light source is used to provide a full-spectrum light source, and the spectroscopic monochromator can be used to perform spectroscopic processing on the full-spectrum light source to obtain a light spectrum segment that is the same as the bow-catenary arc to be detected, so that the purpose of simulating the light spectrum segment of the bow-catenary arc can be achieved through the coordinated setting of the light source and the spectroscopic monochromator. The present invention adopts a rotatable design of the light barrier disk 3, and a plurality of light holes 301 are evenly and spaced along the circumference of the light barrier disk 3. During the rotation of the light barrier disk 3, the light emitted by the light source can periodically pass through the light holes 301 at corresponding positions and enter the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6. The rotating light barrier disk 3 can be regarded as an optical shutter for simulating the arcing time of the bow network (that is, the time for the light to pass through the light holes 301 at corresponding positions during the rotation of the light barrier disk 3). After the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 perform spectroscopic separation, the light is respectively transmitted to the standard detector 7 and the element to be detected 8. During this process, the standard detector 7 can collect the first time parameter of the light irradiation, and the element to be detected 8 can collect the second time parameter of the light irradiation, and the first time parameter is compared with the second time parameter, so as to judge the measurement accuracy of the arcing time of the bow network by the element to be detected, with high accuracy, and avoid misjudgment.

[0064] In an optional embodiment of the present invention, the light source may be, but is not limited to, an ultraviolet-enhanced xenon lamp, which can provide a full-spectrum light source that meets the detection requirements. Of course, the light source may also be other forms of light sources that can provide light that meets the detection requirements.

[0065] In an optional embodiment of the present invention, the standard detector 7 and the element to be detected 8 may be but are not limited to photomultiplier tubes, and the element to be detected 8 may also be a photoelectric tube. According to the light spectrum of the bow-net arc to be detected by the element to be detected 8, the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 are set so that after the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 perform spectroscopic processing on the light entering therein, the same light spectrum as the bow-net arc to be detected can be obtained (the light spectrum same as the bow-net arc to be detected mentioned here should be understood as: the wavelength of the light spectrum of the light after spectrometry and the light spectrum of the arc light generated by the bow-net offline arcing are within a certain range, and can simulate the arc light generated by the bow-net offline arcing, but the wavelength of the light spectrum of the two is not exactly the same). Among them, if Figures 1 to 3As shown, the processing device includes a photoelectric converter 10. The signal receiving end of the photoelectric converter 10 is electrically connected to the signal output end of the standard detector 7 through a data transmission line 9. The signal receiving end of the photoelectric converter 10 can also be electrically connected to the signal output end of the element to be detected 8 through the data transmission line 9. The standard detector 7 and the element to be detected 8 can convert the optical signal into an electrical signal. Of course, the photoelectric converter 10 can also perform photoelectric conversion to convert the received optical signal into an electrical signal to determine the time of light exposure, that is, to obtain the first time parameter and the second time parameter.

[0066] Furthermore, the processing device also includes an analog-to-digital converter and a computer system. The signal receiving end of the analog-to-digital converter is electrically connected to the signal output end of the photoelectric converter 10, and the signal output end of the analog-to-digital converter is electrically connected to the signal receiving end of the computer system. The electrical signal obtained by the photoelectric converter 10 can be transmitted to the analog-to-digital converter for analog-to-digital conversion, thereby obtaining a digital signal of the first time parameter and the second time parameter. When the time parameters are compared through the computer system, if the difference between the two is within a preset difference range, it can be considered that the measurement accuracy of the arcing time of the bow network by the detected element 8 meets the requirements; otherwise, it is considered that the measurement accuracy of the arcing time of the bow network by the detected element 8 does not meet the requirements.

[0067] In an optional embodiment of the present invention, Figures 1 to 4 As shown, the comparative evaluation device for measuring the arcing time accuracy of the bow-net also includes a vertically arranged mounting plate 15 and a driving motor 14. The mounting plate 15 is a vertically arranged rectangular plate. A hollow portion adapted to the light barrier plate 3 is arranged in the middle of the mounting plate 15. The light barrier plate 3 can be rotatably embedded in the hollow portion. The driving motor 14 is located on one side of the light barrier plate 3. The driving motor 14 and the light source are respectively located on both sides of the light barrier plate 3, and the output shaft of the driving motor 14 is connected to the axis position of the light barrier plate 3. The light barrier plate 3 is driven to rotate periodically by the output shaft of the driving motor 14, so that the driving motor 14 and the light barrier plate 3 cooperate to form an optical shutter structure 4. In actual use, the rotation speed of the light barrier plate 3 can be adjusted by controlling the driving motor 14, so as to adjust the switching time of the optical shutter structure 4, so as to achieve the purpose of presetting the light irradiation time, realize the high-speed and high-precision transmission and collection of light, so as to ensure that accurate light irradiation time parameters can be obtained, improve the accuracy of detection, and avoid misjudgment. In some embodiments, the switching time of the optical shutter structure 4 can be adjusted to 0.1 ms or close to 0.1 ms, so that the time parameters of the light passing through the light hole 301 can be accurately recorded, so as to achieve the purpose of accurately recording the arcing time.

[0068] In the above embodiment, the time for light to pass through the light hole 301 can be calculated by the rotation speed of the driving motor 14 and the circumferential length of the light hole 301 in the light barrier plate 3 (i.e., the time for light to pass through the light hole 301 during the rotation of the light barrier plate 3).

[0069] Further, the hollow portion in the middle of the mounting plate 15 is circular and matches the light barrier plate 3. A track can be arranged on the circular inner wall of the hollow portion along the circumferential direction. The annular edge of the light barrier plate 3 is provided with a snap-fit ​​structure matched with the track. The light barrier plate 3 is rotatably connected to the track through the snap-fit ​​structure to realize the rotational connection between the light barrier plate 3 and the mounting plate 15. Among them, one of the track and the snap-fit ​​structure is provided with a boss, and the other is provided with an annular groove. The boss can be slidably embedded in the annular groove to realize the sliding connection between the two. Of course, other embodiments can also be used to realize the sliding connection between the track and the snap-fit ​​structure, so that the light barrier plate 3 can be rotatably connected to the mounting plate 15, and its specific structure is not limited here.

[0070] In an optional embodiment of the present invention, the comparative evaluation device for measuring the arcing time accuracy of the bow-net also includes a dark box (not shown), and at least the light barrier plate 3 is arranged in the dark box to avoid the interference of the light in the external environment with the light used for detection, so as to ensure the accuracy of detection. Of course, the light source, or even the entire first spectroscopic monochromator 5, the second spectroscopic monochromator 6, the standard detector 7, the element to be detected 8, etc., can also be arranged in the dark box to achieve the purpose of avoiding the interference of external light on the detection and improving the accuracy of detection.

[0071] In an optional embodiment of the present invention, a plurality of light holes 301 are arranged on the light barrier plate 3 in a centrally symmetrical manner, and the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 are symmetrically arranged on both sides of a vertical line passing through the center position of the light barrier plate 3, and the light entrance of the first spectroscopic monochromator 5 and the light entrance of the second spectroscopic monochromator 6 are located at the same height; when the light barrier plate 3 is in a rotating state, the light emitted by the light source passes through the two light holes 301 symmetrical about the vertical line passing through the center position of the light barrier plate 3 and is respectively incident on the light entrance of the first spectroscopic monochromator 5 and the light entrance of the second spectroscopic monochromator 6, so as to ensure that the light incident on the light entrance of the first spectroscopic monochromator 5 and the light entrance of the second spectroscopic monochromator 6 are consistent, so as to improve the accuracy of detection.

[0072] In a specific embodiment of the present invention, a light hole 301 may be provided on the surface of the light barrier plate 3 at intervals of 6 degrees. Figure 4 As shown, the shape of the light holes 301 may be, but not limited to, a fan shape, or other shapes, but it is only necessary to ensure that the shapes of the light holes 301 remain consistent.

[0073] In an optional embodiment of the present invention, Figures 1 to 3As shown, the comparative evaluation device for measuring the arcing time accuracy of the bow-net also includes a light source box 1. The light source box 1 is a non-light-emitting box body. The light source is arranged in the light source box 1. Only light emitting holes are respectively opened on two opposite side walls of the light source box 1. Light-emitting components 2 are respectively arranged at the two light emitting holes. The two light-emitting components 2 are symmetrically arranged on both sides of the light source to ensure the consistency of the light emitted from the two light emitting holes. The two light-emitting components 2 are used to emit the light emitted from the light emitting holes to the light barrier plate 3.

[0074] Further, such as Figures 1 to 4 As shown, the light-emitting components 2 located on both sides of the light source box 1 are symmetrical about the vertical line passing through the center position of the light barrier plate 3. Each light-emitting component 2 includes a light-emitting element 201 and a light-collecting element 202, the light-inlet of the light-emitting element 201 is connected to the light-emitting hole, the light-emitting port of the light-emitting element 201 is connected to the light-inlet of the light-collecting element 202, the light-emitting port of the light-collecting element 202 is arranged toward the light barrier plate 3, the light-emitting element 201 is used to change the direction of the light so that the light is emitted toward the light barrier plate 3; the light-collecting element 202 is used to converge the light so that the light is concentrated and emitted toward the light barrier plate 3. Among them, the light-emitting element 201 can be but not limited to a 45-degree reflector, and the light-collecting element 202 can be but not limited to a focusing mirror. The light emitted from the light-emitting hole of the light source box 1 is adjusted by the light-emitting element 201 and the light-collecting element 202 to ensure that the light emitted from both sides of the light source box 1 passes through the two light holes 301 at the symmetrical positions of the light barrier plate 3 and respectively enters the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 to ensure the accuracy of the detection.

[0075] In an optional embodiment of the present invention, Figures 1 to 3 As shown, the comparative evaluation device for measuring accuracy of arcing time of the bow-net also includes a lifting device 13, on which the element to be detected 8 is arranged, so that the height of the element to be detected 8 can be adjusted by the lifting device 13, so that the standard detector 7 and the element to be detected 8 are located on the same horizontal line; and the standard detector 7 can be directly installed at the light outlet of the first spectroscopic monochromator 5. Since different elements to be detected 8 need to be detected, the setting of the lifting device 13 facilitates the height adjustment according to different elements to be detected 8, so as to ensure the consistency in height between the element to be detected 8 and the standard detector 7, and since the standard detector 7 does not need to be frequently replaced, it can be directly installed at the light outlet of the first spectroscopic monochromator 5, which is more convenient to use.

[0076] In this embodiment, if Figure 1 , Figure 2 As shown, the lifting device 13 may adopt but is not limited to a scissor-type lifting structure.

[0077] In an optional embodiment of the present invention, Figures 1 to 3As shown, the comparative evaluation device for measuring the arcing time of the bow-net also includes a first base 11. The first base 11 is a flat plate arranged in the horizontal direction. The light source box 1, the light projection assembly 2, the first spectroscopic monochromator 5, the second spectroscopic monochromator 6, the mounting plate 15, and the drive motor 14 are all arranged on the top of the first base 11, thereby providing an installation position for the components, improving the integrity of the device, and facilitating the adjustment of the position.

[0078] Further, such as Figures 1 to 3 As shown, the comparative evaluation device for measuring the arcing time of the bow-net also includes a second base 12. The second base 12 is a flat plate arranged in the horizontal direction. The second base 12 can be arranged on the first base 11 or on one side of the first base 11. The lifting device 13 is arranged on the top of the second base 12, providing an installation position for the lifting device 13.

[0079] The working process of the comparative evaluation device for measuring the arcing time accuracy of the bow net of the present invention is as follows: when in use, first turn on the light source, the light source adopts an ultraviolet enhanced xenon lamp, which can provide a full-spectrum light source that meets the detection requirements, and the light passes through the two light exit holes on the light source box 1 and the 45-degree mirror and the focusing mirror respectively arranged on both sides of the light source box 1, and then is emitted to the light barrier plate 3. At this time, the light barrier plate 3 is driven by the driving motor 14 to rotate at a preset speed. Since a light hole 301 is arranged on the light barrier plate 3 every 6 degrees along its circumference, the speed of the driving motor 14 and the length of the light hole 301 on the circumference of the light barrier plate 3 can be calculated. 01 time. In addition, after the light passes through the light hole 301, it will be incident on the light entrance of the first spectroscopic monochromator 5 and the light entrance of the second spectroscopic monochromator 6. The first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 will split the full-spectrum light source into spectrum segments required for detection. The light after spectroscopic processing in the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 will be respectively incident on the standard detector 7 and the element to be detected 8. The standard detector 7 and the element to be detected 8 or the photoelectric converter 10 can convert the collected light signal into an electrical signal. The computer system can obtain the light transmission time through the electrical signal, thereby judging the measurement accuracy of the arc burning time of the bow network by the element to be detected 8.

[0080] The characteristics and advantages of the comparative evaluation device for measuring the arcing time of the pantograph and the catenary of the present invention are:

[0081] 1. In the comparative evaluation device for the measurement accuracy of the arcing time of the bow-catenary, the light source is used to provide a full-spectrum light source, and the full-spectrum light source can be spectroscopically processed by a spectroscopic monochromator to obtain a light spectrum segment identical to the bow-catenary arcing to be detected, thereby achieving the purpose of simulating the light spectrum segment of the bow-catenary arcing by coordinating the light source and the spectroscopic monochromator.

[0082] 2. In the comparative evaluation device for the measurement accuracy of the arcing time of the bow-net, the light barrier plate 3 is rotatable. During the rotation of the light barrier plate 3, the light emitted by the light source can periodically pass through the light holes 301 at the corresponding positions and enter the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 to simulate the arcing time of the bow-net. After the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 perform spectrometry, the light is respectively transmitted to the standard detector 7 and the element to be detected 8. During this process, the standard detector 7 can collect the first time parameter of the light irradiation, and the element to be detected 8 can collect the second time parameter of the light irradiation, and the first time parameter is compared with the second time parameter, so as to judge the measurement accuracy of the arcing time of the bow-net by the element to be detected 8, with high accuracy, and avoid misjudgment.

[0083] Implementation Method 2

[0084] like Figures 1 to 5 As shown, the present invention provides a comparative evaluation method for measuring the arcing time of a bow and a catenary, and the comparative evaluation method for measuring the arcing time of a bow and a catenary comprises the following steps:

[0085] Step S1: setting the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 to split into a preset light spectrum; wherein the preset light spectrum of the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 is set to be the light spectrum of the bow-catenary arc required for detection.

[0086] Step S2: outputting light from a light source; wherein the light source adopts an ultraviolet-enhanced xenon lamp to output a full-spectrum light source.

[0087] Step S3: driving the light barrier plate 3 to rotate at a preset speed, so that the light passes through two light holes 301 located at symmetrical positions on the light barrier plate 3 and then enters the first spectroscopic monochromator 5 and the second spectroscopic monochromator 6 respectively;

[0088] Step S4: the light after being split by the first spectroscopic monochromator 5 enters the standard detector 7 and obtains the first time parameter, and the light after being split by the second spectroscopic monochromator 6 enters the to-be-detected element 8 and obtains the second time parameter;

[0089] Step S5: Compare the first time parameter with the second time parameter to determine the measurement accuracy of the arcing time of the bow-catenary by the component to be detected 8.

[0090] In an optional embodiment of the present invention, in step S4, the first time parameter includes the first starting time when the standard detector 7 obtains the light passing through the light hole 301, and the second time parameter includes the second starting time when the element to be detected 8 obtains the light passing through the light hole 301;

[0091] Step S5 includes:

[0092] Step S501: Subtract the second starting time from the first starting time, and compare it with a preset starting time range;

[0093] Step S502: If the difference between the second starting moment and the first starting moment is within the preset starting moment range, the measurement accuracy of the arcing time of the bow-catenary by the detected element 8 meets the requirements; if the difference between the second starting moment and the first starting moment exceeds the preset starting moment range, the measurement accuracy of the arcing time of the bow-catenary by the detected element 8 does not meet the requirements.

[0094] The preset starting time range can be adjusted according to different components 8 to be detected and the influence of the public network offline arcing time on different components 8 to be detected, and the specific range is not limited here.

[0095] In another optional embodiment of the present invention, in step S4, the first time parameter includes the first termination time when the standard detector 7 obtains the light passing through the light hole 301, and the second time parameter includes the second termination time when the element to be detected 8 obtains the light passing through the light hole 301;

[0096] Step S5 includes:

[0097] Step S501': subtract the second end time from the first end time, and compare it with a preset end time range;

[0098] Step S502': If the difference between the second termination time and the first termination time is within the preset termination time range, the measurement accuracy of the bow-catenary arcing time of the detected element 8 meets the requirements; if the difference between the second termination time and the first termination time exceeds the preset termination time range, the measurement accuracy of the bow-catenary arcing time of the detected element 8 does not meet the requirements.

[0099] The preset termination time range can be adjusted according to different components 8 to be detected and the influence of the public network offline arcing time on different components 8 to be detected, and the specific range is not limited here.

[0100] In another optional embodiment of the present invention, in step S4, the first time parameter includes a first time length for the standard detector 7 to obtain the light passing through the light hole 301, and the second time parameter includes a second time length for the element to be detected 8 to obtain the light passing through the light hole 301;

[0101] Step S5 includes:

[0102] Step S501'': subtract the second duration from the first duration, and compare it with a preset duration range;

[0103] Step S502'': If the difference between the second time length and the first time length is within the preset time length range, the measurement accuracy of the arcing time of the bow-catenary arcing time of the detected element 8 meets the requirements; if the difference between the second time length and the first time length exceeds the preset time length range, the measurement accuracy of the arcing time of the bow-catenary arcing time of the detected element 8 does not meet the requirements.

[0104] In another optional embodiment of the present invention, in step S4, the light after being split by the second spectroscopic monochromator 6 enters the to-be-detected element 8 and obtains a second time parameter, the second time parameter including the second time length of the light passing through the light hole 301 obtained by the to-be-detected element 8; and the third time of the light passing through the light hole 301 can be calculated by the rotation speed of the driving motor 14 and the length of the light hole 301 in the circumferential direction of the light barrier plate 3;

[0105] Step S5 includes:

[0106] Step S501''': subtract the second duration from the third duration, and compare with a preset duration range;

[0107] Step S502''': If the difference between the second time length and the third time length is within the preset time length range, the measurement accuracy of the arcing time of the bow-catenary element 8 to be detected meets the requirements; if the difference between the second time length and the third time length exceeds the preset time length range, the measurement accuracy of the arcing time of the bow-catenary element 8 to be detected does not meet the requirements.

[0108] The comparative evaluation method for the measurement accuracy of the arcing time of the bow-net of the present invention adopts a combination of data calculation and actual detection to obtain the measurement accuracy of the arcing time of the bow-net of the detected element 8, which has improved accuracy compared with the method of using a single true value acquisition method in the prior art to judge the measurement accuracy of the arcing time of the bow-net of the detected element 8. In addition, the comparative evaluation method for the measurement accuracy of the arcing time of the bow-net of the present invention has the same characteristics and advantages as the comparative evaluation device for the measurement accuracy of the arcing time of the bow-net, which will not be repeated here.

[0109] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A comparative evaluation device for measuring the arcing time accuracy of a pantograph and a catenary, characterized in that: The comparative evaluation device for measuring the arcing time accuracy of the pantograph and the catenary comprises: light source; A light barrier plate capable of rotating along its central axis, wherein a plurality of light holes are evenly and spaced apart along its circumference; A first spectroscopic monochromator and a second spectroscopic monochromator, wherein the light entrance of the first spectroscopic monochromator and the light entrance of the second spectroscopic monochromator are respectively oriented toward the light barrier plate, and a to-be-detected element is disposed at the light exit of the second spectroscopic monochromator; A standard detector, which is arranged at the light outlet of the first spectroscopic monochromator; A processing device, the processing device is used to compare the first time parameter collected by the standard detector with the second time parameter collected by the element to be detected, so as to determine the measurement accuracy of the arcing time of the bow-catenary by the element to be detected; The comparative evaluation device for measuring accuracy of arcing time of the bow-net also includes a vertically arranged mounting plate and a driving motor, the mounting plate has a hollow portion adapted to the light barrier plate, the light barrier plate is rotatably embedded in the hollow portion, the driving motor is located at one side of the light barrier plate, and the output shaft of the driving motor is connected to the axis position of the light barrier plate, the output shaft of the driving motor drives the light barrier plate to rotate periodically, so that the driving motor cooperates with the light barrier plate to form an optical shutter structure; The plurality of light holes are arranged in a centrally symmetrical manner on the light barrier plate, the first spectroscopic monochromator and the second spectroscopic monochromator are symmetrically arranged on both sides of a vertical line passing through the center position of the light barrier plate, and the light entrance port of the first spectroscopic monochromator and the light entrance port of the second spectroscopic monochromator are located at the same height; When the light barrier disk is in the rotating state, the light emitted by the light source passes through the two light holes symmetrical about the vertical line passing through the center position of the light barrier disk and is respectively incident on the light entrance port of the first spectroscopic monochromator and the light entrance port of the second spectroscopic monochromator.

2. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 1, characterized in that: The comparative evaluation device for measuring accuracy of arcing time of the bow-catenary also includes a dark box, and at least the light barrier disk is located in the dark box.

3. The comparative evaluation device for measuring the arcing time of a pantograph and a catenary according to claim 1, characterized in that: The light source is arranged in a light source box, and light outlet holes are respectively opened on two opposite side walls of the light source box. Light projection components are arranged at the light outlet holes. The two light projection components are symmetrically arranged on both sides of the light source. The light projection components are used to project the light emitted from the light outlet holes onto the light barrier plate.

4. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 3, characterized in that: The light projection assembly includes a light emitting element and a light focusing element, the light entrance of the light emitting element is connected to the light exit hole, the light exit of the light emitting element is connected to the light entrance of the light focusing element, the light exit of the light focusing element is arranged toward the light barrier disk, the light emitting element is used to change the direction of the light so that the light is emitted toward the light barrier disk; the light focusing element is used to converge the light so that the light is concentrated and emitted toward the light barrier disk.

5. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 4, characterized in that: The light emitting element includes a 45-degree reflector; and / or the light collecting element includes a focusing mirror.

6. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 3 or 4, characterized in that: The light projection components located on both sides of the light source box are symmetrical about a vertical line passing through the center position of the light barrier plate.

7. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 1, characterized in that: The standard detector includes a photomultiplier tube; and / or the element to be detected includes a photomultiplier tube or a phototube.

8. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 1 or 7, characterized in that: The processing device comprises a photoelectric converter, and a signal receiving end of the photoelectric converter is electrically connected to a signal output end of the standard detector through a data transmission line.

9. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 1 or 7, characterized in that: The standard detector is directly installed at the light outlet of the first spectroscopic monochromator; The comparative evaluation device for measuring the arcing time accuracy of the bow-catenary also includes a lifting device, and the element to be detected is arranged on the lifting device to adjust the height of the element to be detected so that the standard detector and the element to be detected are located on the same horizontal line.

10. The device for comparing and evaluating the measurement accuracy of the arcing time of the pantograph and the catenary according to claim 1, characterized in that: The light source is an ultraviolet enhanced xenon lamp.

11. A method for comparing and evaluating the measurement accuracy of the arcing time of a pantograph and a catenary, which uses the comparing and evaluating device according to any one of claims 1 to 10 to compare and evaluate the measurement accuracy of the arcing time of a pantograph and a catenary, characterized in that: The comparative evaluation method for measuring the arcing time of the pantograph and the catenary comprises the following steps: Setting the first spectroscopic monochromator and the second spectroscopic monochromator to split the light into a preset light spectrum; The light source outputs light; Driving the light barrier plate to rotate at a preset speed, so that the light passes through two light holes located at symmetrical positions on the light barrier plate and then enters the first spectroscopic monochromator and the second spectroscopic monochromator respectively; The light after being split by the first spectroscopic monochromator enters the standard detector and obtains a first time parameter, and the light after being split by the second spectroscopic monochromator enters the element to be detected and obtains a second time parameter; The first time parameter is compared with the second time parameter to determine the measurement accuracy of the arcing time of the bow-catenary by the component to be detected.

12. The comparative evaluation method for measuring the arcing time of a pantograph and a catenary according to claim 11, characterized in that: The light source adopts an ultraviolet enhanced xenon lamp to output a full-spectrum light source.

13. The comparative evaluation method for measuring the arcing time of a pantograph and a catenary according to claim 11, characterized in that: The preset light spectrum segments of the first spectroscopic monochromator and the second spectroscopic monochromator are set to be the light spectrum segments of the bow-catenary arcing required for detection.

14. The comparative evaluation method for measuring the arcing time of a pantograph and a catenary according to claim 13, characterized in that: The first time parameter includes a first starting time when the standard detector obtains that the light passes through the light hole, and the second time parameter includes a second starting time when the element to be detected obtains that the light passes through the light hole; If the difference between the second starting time and the first starting time is within a preset starting time range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirement.

15. The comparative evaluation method for measuring the arcing time of a pantograph and a catenary according to claim 13 or 14, characterized in that: The first time parameter includes a first termination time when the standard detector obtains that the light passes through the light hole, and the second time parameter includes a second termination time when the element to be detected obtains that the light passes through the light hole; If the difference between the second termination time and the first termination time is within a preset termination time range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirements.

16. The comparative evaluation method for measuring the arcing time of a pantograph and a catenary according to claim 15, characterized in that: The first time parameter includes a first time length for the standard detector to obtain that the light passes through the light hole, and the second time parameter includes a second time length for the element to be detected to obtain that the light passes through the light hole; If the difference between the second time length and the first time length is within a preset time length range, the measurement accuracy of the component to be detected for the arcing time of the bow-catenary meets the requirements.

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