CN113552523A - Calibration device and calibration method for bow net arcing measurement sensor - Google Patents
Calibration device and calibration method for bow net arcing measurement sensor Download PDFInfo
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Abstract
The invention belongs to the technical field of detection and monitoring of a traction power supply system, and discloses a calibration device for a bow net arcing measurement sensor, which comprises a measurement module and an arcing module, wherein the calibration device simulates actual data such as a lead-out height value and a pull-out value through an adjustment structure, limits the working distance between the sensor to be calibrated and a light source for simulating arcing, realizes three-way adjustment of the bow net arcing sensor to be calibrated based on an adjustment platform structure, and adjusts different light source light transmission frequencies through a rotating plate provided with a light through hole, so that the bow net arcing duration, the bow net arcing times and the bow net arcing interval time measured by the bow net arcing sensor are calibrated in a mode closest to the use environment. The calibration device can simultaneously calibrate various types of arcing sensors, and simultaneously considers the influence of environment interference light on the arcing sensors. The invention also discloses a calibration method based on the calibration device of the bow net arcing measurement sensor.
Description
Technical Field
The invention belongs to the technical field of detection and monitoring of traction power supply systems, and particularly relates to a calibration device and a calibration method for a bow net arcing measurement sensor.
Background
The pantograph is an important device for an electric traction vehicle to obtain electric energy from a contact net, and the quality of the current receiving state of the pantograph is closely related to the contact state of the pantograph and the contact net.
The current collection performance of the pantograph-catenary is evaluated by utilizing offline spark and arcing detection of the pantograph-catenary, and the method becomes a popular practice in the international railway industry. Before being installed on a detection train for use, the bow net arcing measuring device needs to calibrate an arcing sensor so as to ensure that the device can accurately respond to various characteristics of bow net arcing according to collected signals.
According to the requirements of European railway standard EN50317, the bow net arcing measuring device can sense ultraviolet light emitted by copper substances and having wavelengths of 220 nm-225 nm and 323 nm-329 nm, and parameters needing to be calibrated before loading of the bow net arcing measuring device comprise bow net arcing spectral radiation illuminance, bow net arcing spectral responsivity, bow net arcing duration, bow net arcing times, bow net arcing interval time and the like.
In the prior art, the publication No. CN211348504U discloses a chinese utility model patent document entitled "system for calibrating bow-net arcing sensor" with publication time of 25/8/2020, and discloses a system for calibrating bow-net arcing sensor, whose control component controls a shutter to make ultraviolet light of specific time characteristics and ultraviolet light of specific intensity irradiate a to-be-calibrated bow-net arcing sensor, and calibration test data corresponding to the to-be-calibrated bow-net arcing sensor can be generated according to an output signal generated by the to-be-calibrated bow-net arcing sensor and an instruction signal of the control shutter, so as to realize calibration of bow-net arcing duration, bow-net arcing times and bow-net arcing interval time of the to-be-calibrated bow-net arcing sensor. However, the light source such as an incandescent lamp exists in the tunnel, and the influence of the interference light source is not considered in the calibration of the arc sensor by the device.
Disclosure of Invention
The calibration device and the calibration method of the arc measurement sensor realize the three-dimensional adjustment of the bow net arcing sensor to be calibrated based on an adjustment platform structure, and adjust the light transmission frequency of a light source through a rotating plate provided with a light transmission hole, thereby calibrating the bow net arcing duration, the bow net arcing times and the bow net arcing interval time measured by the bow net arcing sensor in a mode closest to the use environment.
The bow net arcing measurement sensor calibration device comprises a measurement module and an arcing module which are arranged oppositely, wherein the measurement module comprises an adjusting platform, a front translation platform and a rear translation platform are arranged on the adjusting platform, an arcing sensor to be calibrated is arranged on the front translation platform and the rear translation platform, the adjusting platform moves in the vertical direction and the horizontal direction under a control instruction, the front translation platform and the rear translation platform drive the arcing sensor to be calibrated to move in the front and rear direction under the control instruction, when the vertical direction, the horizontal direction and the front and rear direction are combined and adjusted, the arcing sensor to be calibrated of different types can be ensured to be opposite to the arcing module after being installed on the device, and the front translation platform drives the arcing sensor to move back and forth so as to simulate the calibration of the arcing sensor under the condition of different working distances between the arcing sensor and an arcing point.
The arc burning module comprises a rotating disc which is arranged on the mounting platform and rotates in a vertical plane, the disc surface of the rotating disc faces the arc burning sensor on the front and back translation platform, a plurality of light through holes with different apertures are formed in the same circumference of the rotating disc by taking the rotating center as the circle center, and the mounting platform can adjust the working distance between the rotating disc and the arc burning sensor by moving back and forth; a deuterium lamp used as a simulated ultraviolet light source and an incandescent lamp used as an interference light source are arranged on the mounting platform and face the disc surface of the rotating disc, namely the rotating disc is positioned between the front and back translation platforms of the measuring module and the deuterium lamp and/or the incandescent lamp, the positions of the deuterium lamp and the incandescent lamp are not overlapped, the linear distance between the positions of the deuterium lamp and the incandescent lamp and the rotating central axis of the rotating disc is equal to the radius of the circumference of the light through hole on the rotating disc, the deuterium lamp simulates an ultraviolet light source, the rotating disc is controlled to rotate through platform software, the simulation ultraviolet light can simulate the duration of a single arc through the light through holes with different sizes, the incandescent lamp simulates the interference light source, and similarly, the light of the incandescent lamp can also pass through the light through holes with different sizes along with the rotation of the rotating disc, and in the calibration process, if necessary, the positions of the deuterium lamp and the incandescent lamp can be combined to design that the positions of the light through holes are respectively provided with the deuterium lamp and the white light through holes at each time The light of the incandescent lamp, the purpose of setting up the interference light source lies in: the arcing sensor should only respond to the ultraviolet light source and not respond to the incandescent lamp light source, so if the calibration sensor responds to the incandescent lamp light source, the calibration sensor should be replaced and not put into practical use.
Further, the arcing sensor to be calibrated is arranged on the front and rear translation platforms through the arcing acquisition module, and the arcing acquisition module is compatible with sensors of different types, so that calibration of the arcing sensors of different types can be conveniently realized.
Preferably, the mounting platform moves in the up-down (height guiding direction) and left-right (pull-out value) directions under the control instruction, and actually, the measuring module and the arcing module are combined to realize relative movement in the front-back, up-down, left-right directions. Optionally, the arcing sensor to be calibrated, a rotating disk for simulating arcing, a light source and the like can also be respectively installed and fixed on the measuring module and the arcing module;
more specifically, the vertical movement height range of the mounting platform and the adjusting platform is +/-200mm, the horizontal movement width range is +/-400mm, and the working distance range between the front and back translation platform and the arc sensor is 1000-9000 mm through the movement adjusting rotating disc and the arc sensor in the front and back direction of the mounting platform.
Preferably, as the deuterium lamp of simulation ultraviolet light source, adopt the deuterium lamp of the integrative encapsulated structure formula of wavelength 200nm ~400nm, and the light-emitting mouth of deuterium lamp sets up the leak light hole of diameter 10mm, the integrative packaging structure of deuterium lamp will remove all structure shelters from of the rest face of leak light hole and seals, avoid the leak light to cause the interference to the arcing sensor, the packaging structure afterbody adopts the aviation plug to supply power for the deuterium lamp, and, the bulb of deuterium lamp can set up as far as possible in integrative packaging structure and be close to the leak light hole position, trompil leak the follow-up rectangle leak light hole that also can be changed according to the demand during structural design.
And the incandescent lamp as the interference light source is also an incandescent lamp of integrated packaging structure formula, the light leak hole of diameter 10mm is seted up to integrated packaging structure's light-emitting mouth, the incandescent lamp is close to the light leak hole setting at integrated packaging structure as far as possible, integrated packaging structure will remove the light leak hole all carry out the structure and shelter from the closure and avoid the light leak, the same with the deuterium lamp, the light leak hole is not limited to the circular port, the later stage probably adopts the quad slit, the packaging structure afterbody adopts the aviation plug to supply power for the deuterium lamp, the incandescent lamp is as the contrast interference light source, an arcing sensor for debugging unresponsive incandescent lamp light source.
Furthermore, the rotating disc is a right circular disc with the radius of R, a plurality of light through holes are arranged on the disc body of the rotating disc and on the circumference which is concentric with the rotating disc and has the radius of R, the light through holes are circular or rectangular holes, the center points of the light through holes are located on the same circumference, and when any one light through hole rotates along with the rotating disc to be aligned with the light outlet of the deuterium lamp or the incandescent lamp, the other light through hole is just aligned with the light through hole of the incandescent lamp or the deuterium lamp.
More preferably, a motor integrated base capable of sliding back and forth and left and right is arranged on the mounting platform, a servo motor for driving the rotating disk to rotate is arranged in the motor integrated base, namely, the servo motor and the speed reduction transmission structure are fixed on the mounting platform and drive the hollow rotating disk to rotate at a uniform speed according to a programmable speed V, the design of simulating the programmable duration output of arcing is realized through the hollow rotating disk, the servo motor and the speed reduction transmission structure, the incandescent lamp and the deuterium lamp are respectively horizontally arranged on the motor integrated base and on two sides of the servo motor, and the light emitting heights of the incandescent lamp and the deuterium lamp are equal to and parallel to the rotation central axis of the rotating disk; correspondingly, the distance between the incandescent lamp and the deuterium lamp is equal to the diameter of the circumference of the rotating disc provided with the light through hole, and the simulation of arcing can be realized as long as the diameter (namely the path) of the light through hole covers the path of the light emitted by the deuterium lamp light source, wherein the frequency shielding and light through can be completed, specifically, for example, the rotating disc rotates at a rotating speed V under the driving of a rotary driving device, the shielding and light leakage of ultraviolet light and interference light are realized by the superposition of 2 ultraviolet lamps with the diameter of 10mm and encapsulated by the incandescent lamp on the rotating disc, the arcing generation of arcing with adjustable arcing duration and the simulation periodic generation of interference light are realized by adjusting the rotating speed V of a servo motor, and the shapes and the sizes of the apertures of the 2 light through holes are determined according to the resolution (0.5 ms required by the standard) of the arcing duration detection.
More specifically, the motor integration base is arranged on the mounting platform through a cross sliding table with a driving device. Incandescent lamp and deuterium lamp integration are on the integrated base of motor, and the integrated base of motor can adjust through cross slip table and pull out value direction position on the cross slip table, considers that the value position of pulling out confirms the back, and the structure between the integrated base of motor and the installation mesa carries out the secondary and connects and fix, avoids high-speed rotatory vibration and the damage to cross slip table.
Furthermore, the mounting platform comprises a section bar bracket, the top of the section bar bracket is provided with a stainless steel table top which is ground, the stainless steel table top is ground to ensure the flatness of the stainless steel table top, and the bottom of the section bar bracket is provided with a lockable universal roller; and the stainless steel table top is provided with a mounting hole for mounting the motor integrated base.
Preferably, the mounting holes are in an M6 matrix hole array, and the distance is 25mm multiplied by 25mm, so that the mounting, fixing and position adjustment of the motor integrated base are facilitated.
Preferably, a precise shear type lifting mechanism driven by an electric push rod is arranged in the adjusting platform, the electric push rod is connected with the control cabinet through signals and used for realizing the movement of the adjusting platform in the vertical direction, and a driving wheel in the left and right direction connected with the control cabinet through signals and used for realizing the movement of the adjusting platform in the left and right direction is arranged at the bottom of the adjusting platform, namely, after the arcing sensor to be calibrated is installed on the device, alignment adjustment is carried out if needed. The alignment adjustment action can be automatically completed in a mode of directly inputting related parameters or action instructions through the control cabinet, so that errors can be effectively avoided, and the operation is convenient.
More specifically, the front and back translation platform comprises a movable sliding table for installing an arcing sensor to be calibrated, a transmission screw and a guide rail which are arranged in the front and back direction, the movable sliding table is arranged on the guide rail and driven by the transmission screw to drive the arcing sensor to be calibrated to move in the front and back direction along the guide rail, the combination of the transmission screw and the guide rail can also ensure the adjustment precision under the premise of considering the stability of the movement, meanwhile, the screw structure also has better positioning, for the arcing sensor to be detected, after the arcing sensor is installed and positioned, the calibration can be better completed in a test process by a relatively stable environment, so that the combination of the transmission screw and the guide rail is selected, and a parallel double-guide-rail structure adopting a servo motor sliding table can be preferably set, the stability and the support are better, and the arcing collecting sensor is installed through three arcing sensor installing jigs, the sensor is fixed on the front and back translation platform stably.
Namely, when the vertical direction and the left-right direction are combined and adjusted, the equal energy of the arc sensors to be calibrated of different models can be ensured to be aligned with the light through holes in the deuterium lamp light source of the arc module and the hollow turntable after the arc sensors to be calibrated are installed on the device.
Corresponding to the device, the invention also provides a calibration method of the bow net arcing measurement sensor, which comprises the following steps:
the method comprises the following steps of (1) installing and adjusting an arcing sensor, namely fixedly arranging the arcing sensor to be calibrated on a front and back translation platform on an adjusting platform in a measuring module, adjusting the distance between the adjusting platform and the installing platform in the arcing module and the front and back positions of the front and back translation platform to a preset range, and adjusting the height of the arcing sensor to be calibrated and the pull-out value of the rotating disk in the vertical direction and the pull-out value of the rotating disk in the horizontal direction to the preset range by adjusting the height and the left and right positions of the adjusting platform and/or the installing platform;
a data acquisition step, namely, the installation and adjustment step of the arcing sensor is carried out to set the arcing sensor to be calibrated, then a rotating disc on an arcing module is started to rotate to a preset rotating speed in an accelerating way and keep the uniform speed, and the theoretical arcing duration, the theoretical arcing interval time and the theoretical arcing times under the current rotating speed condition are recorded; then, a deuterium lamp serving as a simulated ultraviolet light source and/or an incandescent lamp serving as an interference light source on the arcing module are/is lightened, an arcing sensor to be calibrated on the measuring module is started to acquire arcing data, and the actual arcing duration, the actual arcing interval time and the actual arcing frequency are determined by utilizing an actual arcing signal; namely, testing and correspondingly recording the arcing duration and parameter sets of all arcing sensors to be calibrated under different testing conditions, wherein the different testing conditions refer to different conditions of the aperture of a light through hole on a rotating disc, the rotating uniform speed of the rotating disc, the distance between the arcing sensors to be calibrated and the rotating disc, the height in the vertical direction and the pull-out value in the horizontal direction;
a parameter calibration step, which is to establish a numerical mapping relation between the actual arcing duration, the actual arcing interval time and the actual arcing frequency in the data acquisition step and the corresponding theoretical arcing duration, the theoretical arcing interval time and the theoretical arcing frequency respectively, preferably, to calibrate and convert the corresponding relation between the arcing duration and the test data of the parameter group of the similar arcing sensors under different test conditions in all the arcing sensors to be calibrated recorded in the data acquisition step, detect whether the data acquired by the arcing sensors reappear the arcing duration corresponding to the light-passing holes on the rotating disk and adjust and calibrate the data according to the size and the distribution of the light-passing holes on the rotating disk until the error between the output frequency of the arcing sensors to be calibrated and the standard frequency generated by simulating the arcing of the deuterium lamp serving as the simulated ultraviolet light source in the arcing module is within +/-1 time, And the error between the arcing duration output by the arcing sensor to be calibrated and the arcing duration generated by simulated arcing of the deuterium lamp is within 5 percent.
Preferably, in the data acquisition step, an arcing sensor to be calibrated on the measurement module is started to acquire arcing data, if the repeatability of the arcing duration time simulated by a deuterium lamp serving as a simulated ultraviolet light source on the arcing module acquired by the arcing sensor to be calibrated is higher than 95%, the arcing generated by the arcing module in simulation is considered to be stable and reliable, otherwise, the arcing sensor is reinstalled, and the measurement module and the arcing module are adjusted in the arcing sensor installation and adjustment step.
Further, in the data acquisition step, all the arcing sensors to be calibrated are replaced with different types of arcing sensors under the same test condition to perform arcing duration and parameter set tests, that is, different types of arcing sensors can be used to perform actual arcing signal acquisition at the same time, and in the parameter calibration step, mapping relations between actual arcing duration, actual arcing interval time and actual arcing number of the different types of arcing sensors to be calibrated are established according to the same theoretical arcing duration, theoretical arcing interval time and theoretical arcing number.
More specifically, in the parameter calibration step, for the arc sensors of the same type, the arc intensity is determined by integrating the waveform height of the output according to the acquired data, specifically, for the arc sensors of the same type, the arc intensity is determined according to the height of the integrated waveform by integrating the acquired arc signals, the intensity consistency calibration of the arc sensors of the same type is realized, and preferably, the arc duration error is within 5% according to the hardware program interface calibration.
In addition, the light leakage hole of the rotating disk and the light source can be replacedThe hole reduces the requirement on a preset rotating speed V, the aperture of the light leakage hole is set according to the rotating angle and the circumference of the light leakage hole, and specifically, the rotating speed of the rotating disc is set as V, and the unit is r/min; the resolution of the duration time of arcing is n, the unit is millisecond ms, and the corresponding arcing occurrence degree is
And adjusting the circumference and the size of the rotating disk where the light through hole is located according to the rotation degree. Namely, under the condition of the same duration resolution, the higher the rotating speed is, the larger the required rotating angle is; the lower the rotation speed, the smaller the rotation angle required, and the light leakage aperture is set according to the rotation angle and the selection of the circumference in which it is located.
That is, holes with different sizes can be formed on different circumferences of the turntable according to specific requirements, and the longer the circumference of the periphery is, the longer the diameter of the hole or the width of the square is, and the corresponding frequency is also adjusted.
Has the advantages that:
compared with the prior art, the technical scheme provided by the invention has the advantages that the distance between the measuring module and the arcing module is adjusted to enable the arcing sensor to be calibrated to be arranged at the distance for simulating the actual working state, the hollow holes with different sizes are formed in the circumference with the fixed diameter on the rotating disc, the single arcing duration is simulated through the diameter of the hollow holes and the rotating speed, the design for simulating the programmable duration output of arcing is realized through the hollow turntable, the servo motor and the speed reduction transmission structure, the shielding rotating disc is arranged at the deuterium lamp light source emitting opening, the motor is controlled to rotate the rotating disc through platform software, the hollow holes with different sizes are formed in the circumference with the fixed diameter on the rotating disc, and the calibration of the arcing intensity parameters of the single arcing duration is realized through the diameter of the hollow holes and the rotating speed; in addition, deuterium lamps with different powers are selected as ultraviolet light simulation light sources for measuring the consistency of the arcing intensity, incandescent lamps are arranged as simulation actual interference light sources, and unqualified arcing sensors interfered by the incandescent lamps are filtered in the calibration process of the arcing sensors. The calibration device can simultaneously calibrate various types of arcing sensors, and simultaneously considers the influence of environment interference light on the arcing sensors.
The front translation platform and the rear translation platform adopt the servo motor sliding table to simulate dynamic arcing detection and calibration under the changing condition of the working distance between an arcing sensor and an arcing point when the pull-out value and the guide height change, and the arcing acquisition sensor module is used for installing a jig through three arcing sensors, so that the sensors are fixed on the front translation platform and the rear translation platform stably, and the parameter calibration of different types of arcing sensors is realized.
In addition, in the preferred scheme, the vertical adjusting mechanism adopts a precise shear type adjusting mechanism, the vertical movement of the mechanism is controlled by an electric push rod, the horizontal adjusting mechanism adopts a structural form of screw transmission and double-guide-rail guiding, the horizontal movement of the translation mechanism is realized through manual adjustment, and when the vertical adjusting mechanism and the horizontal adjusting mechanism are combined and adjusted, different arcing sensors can be ensured to be just opposite to the light emitting holes of the deuterium lamp after being installed.
The mounting platform then can add section bar support and motion gyro wheel by the stainless steel mesa and constitute, the stainless steel mesa adopts abrasive machining, guarantees its plane degree, processing has M6 matrix hole array on the mesa, and the interval is 25mm, and the installation of the deuterium lamp of being convenient for and servo motor and speed reduction structure is fixed and the position control, and whole platform can the manual work promote, and can fix subaerial, realize and measure the adjustment of the working distance between the module 2.
Drawings
The foregoing and following detailed description of the invention will be apparent when read in conjunction with the following drawings, in which:
FIG. 1 is a schematic view of the overall structure of the calibration device of the present invention;
FIG. 2 is a schematic structural diagram of a calibration device system according to the present invention;
FIG. 3 is a schematic view of an arcing detection system of the present invention;
FIG. 4 is a schematic structural diagram of a precision scissor lift mechanism according to the present invention;
FIG. 5 is a schematic view of a preferred construction of the mounting platform of the present invention;
FIG. 6 is a schematic view of a rotary disk structure according to the present invention;
FIG. 7 is a schematic view of a deuterium lamp according to the present invention;
FIG. 8 is a schematic view of an incandescent lamp of the present invention;
FIG. 9 is a schematic diagram illustrating the conversion of the rotational speed according to an embodiment of the present invention;
FIG. 10 is a schematic diagram illustrating a rotational speed conversion according to another embodiment of the present invention;
FIG. 11 is a schematic diagram of dual light source uniformity calibration in an arc calibration of the present invention.
In the figure:
1. an arcing sensor; 2. mounting a platform; 3. rotating the disc; 3.1, a light through hole; 4. a deuterium lamp; 5. an incandescent lamp; 6. adjusting the platform; 7. a front and rear translation stage; 8. a precision scissor lift mechanism; 9. moving the sliding table; 10. a stainless steel table top; 11. a profile support; 12. and a universal roller.
Detailed Description
The technical solutions for achieving the objects of the present invention are further illustrated by the following specific examples, and it should be noted that the technical solutions claimed in the present invention include, but are not limited to, the following examples.
Example 1
As a most basic embodiment of the present invention, the present embodiment discloses a calibration device for bow net arcing measurement sensors, as shown in fig. 1 and 2, which includes a measurement module and an arcing module that are oppositely disposed, the measurement module includes an adjustment platform 6, a front and back translation platform 7 is disposed on the adjustment platform 6, an arcing sensor 1 to be calibrated is disposed on the front and back translation platform 7, the adjustment platform 6 realizes movement in the up-down direction and the left-right direction under a control instruction, the front and back translation platform 7 drives the arcing sensor 1 to be calibrated to realize movement in the front and back direction under a control instruction, when the up-down direction, the left and right direction and the front and back direction are adjusted in a combined manner, it can be ensured that arcing sensors 1 to be calibrated of different types can be opposite to the arcing module after being mounted on the device, and the front and back translation platform 7 can drive the arcing sensor 1 to move back and forth to simulate the arcing sensor 1 under different working distances between the arcing sensor 1 and the arcing points And 1, calibrating.
The arc burning module comprises a rotating disc 3 which is arranged on an installation platform 2 and rotates in a vertical plane, the disc surface of the rotating disc 3 faces to the arc burning sensor 1 on the front and back translation platform 7, a plurality of light through holes 3.1 with different apertures are formed in the same circumference of the rotating disc 3 by taking a rotating center as a circle center, and the installation platform 2 can adjust the working distance between the rotating disc 3 and the arc burning sensor 1 by moving back and forth; a deuterium lamp 4 used as a simulated ultraviolet light source and an incandescent lamp 5 used as an interference light source are arranged on the mounting platform 2 and face the disc surface of the rotating disc 3, namely the position of the rotating disc 3 is positioned between a front translation platform 7 and a rear translation platform 7 of the measuring module and the deuterium lamp 4 and/or the incandescent lamp 5, the positions of the deuterium lamp 4 and the incandescent lamp 5 are not overlapped, the linear distance between the arrangement positions of the deuterium lamp 4 and the incandescent lamp 5 and the rotation central axis of the rotating disc 3 is equal to the radius of the circumference where the light through holes 3.1 are positioned on the rotating disc 3, the deuterium lamp 4 simulates an ultraviolet light source, the rotating disc 3 is controlled by platform software to rotate, the simulated ultraviolet light can simulate single arcing duration through the light through holes 3.1 with different sizes, the incandescent lamp 5 simulates an interference light source, and the light can also pass through the light through holes 3.1 with different sizes along with the rotation of the rotating disc 3, in the calibration process, if necessary, the opening positions of the light-passing holes 3.1 can be designed to have the light-passing holes 3.1 pass through the light of the deuterium lamp 4 and the incandescent lamp 5 at the same time, respectively, in combination with the positions of the deuterium lamp 4 and the incandescent lamp 5, and the purpose of the interference light source is to: the arcing sensor 1 should only respond to the uv light source and not to the incandescent lamp 5 light source, and therefore, if the calibration sensor responds to the incandescent lamp 5 light source, it should be replaced and not put into practical use.
According to the technical scheme of the embodiment, the distance between the measuring module and the arcing module is adjusted to enable the arcing sensor 1 to be calibrated to be arranged at the distance for simulating an actual working state, the rotary disc 3 is provided with hollow holes with different sizes on the circumference with a fixed diameter, the single arcing duration time is simulated through the diameter and the rotating speed of the hollow holes, the design for simulating the arcing programmable duration time output is realized through the hollow rotary disc, the servo motor and the speed reduction transmission structure, the shielding rotary disc 3 is arranged at a light source emitting opening of the deuterium lamp 4, the motor is controlled to rotate the rotary disc 3 through platform software, the hollow holes with different sizes are formed on the circumference with the fixed diameter on the rotary disc 3, and the single arcing duration time is simulated through the diameter and the rotating speed of the hollow holes to realize the calibration of the arcing intensity parameters; in addition, as shown in fig. 11, deuterium lamps 4 of different powers are selected as ultraviolet light, if the burning interval time is set to t4, the arcing should be two arcing, the duration of the arcing i should be t1, the duration of the arcing ii should be t3, and the interval time t2 between t1 and t3, the deuterium lamps 4 of different powers are selected as ultraviolet light simulation light sources for consistency measurement of arcing intensity, incandescent lamps 5 which simulate actual interference light sources are arranged, and unqualified arcing sensors 1 interfered by the incandescent lamps 5 are filtered in the test.
Example 2
As a preferred embodiment of the present invention, on the basis of the technical solution of the above example 1, further, as shown in fig. 3, the arcing sensor 1 to be calibrated is arranged on the front and rear translation platform 7 through the arcing acquisition module, and the arcing acquisition module is compatible with different types of sensors, so that the calibration of different types of arcing sensors 1 can be conveniently realized.
Preferably, the mounting platform 2 is capable of moving in the up-down (height guiding direction) and left-right (pull-out value) directions under the control instruction, and actually, the measuring module and the arcing module are combined to be capable of moving back and forth, up and down, left and right relatively. Optionally, the arcing sensor 1 to be calibrated, the rotating disk 3 for simulating arcing, the light source and the like can also be respectively installed and fixed on the measuring module and the arcing module.
More specifically, the vertical movement height range of the mounting platform 2 and the adjusting platform 6 is +/-200mm, the horizontal movement width range is +/-400mm, and the movement of the front-back translation platform 7 and the mounting platform 2 in the front-back direction adjusts the working distance range between the adjusting rotating disk 3 and the arcing sensor 1 to be 1000-9000 mm.
Preferably, as shown in fig. 7, the deuterium lamp 4 as the simulated ultraviolet light source adopts an integrally-packaged deuterium lamp 4 with a wavelength of 200 nm-400 nm, and a light-emitting opening of the deuterium lamp 4 is provided with a light-leaking hole with a diameter of 10mm, the integrally-packaged structure of the deuterium lamp 4 shields and seals all the rest surfaces except the light-leaking hole, so as to avoid the interference of light leakage on the arcing sensor 1, the tail part of the packaged structure adopts an aviation plug to supply power to the deuterium lamp 4, moreover, a bulb of the deuterium lamp 4 can be arranged at a position close to the light-leaking hole as far as possible in the integrally-packaged structure, and the rectangular light-leaking hole can be replaced according to requirements after the light-leaking plate is opened during structural design.
And as shown in fig. 8, the incandescent lamp 5 as the interference light source is also an incandescent lamp 5 of an integrated packaging structure, a light outlet of the integrated packaging structure is provided with a light leakage hole with a diameter of 10mm, the incandescent lamp 5 is arranged close to the light leakage hole as much as possible in the integrated packaging structure, the integrated packaging structure is used for carrying out structural shielding and sealing on the rest surfaces except the light leakage hole to avoid light leakage, the light leakage hole is not limited to a circular hole as with the deuterium lamp 4, a square hole is possibly adopted in the later stage, the tail part of the packaging structure adopts the aviation plug to supply power for the deuterium lamp 4, and the incandescent lamp 5 is used as a contrast interference light source and is used for debugging the arc sensor 1 which does not respond to the light source of the incandescent lamp 5.
Further, as shown in fig. 6, the rotating disk 3 is a right circular disk with a radius R, a plurality of light holes 3.1 are arranged on a circle with a radius R concentric with the rotating disk 3 on the disk body of the rotating disk 3, the light holes 3.1 are circular or rectangular openings, the center points of the light holes 3.1 are located on the same circle, and when any one of the light holes 3.1 rotates with the rotating disk 3 to align with the light outlet of the deuterium lamp 4 or the incandescent lamp 5, another light hole 3.1 just aligns with the light hole 3.1 of the deuterium lamp 5 or the deuterium lamp 4.
More preferably, a motor integrated base capable of sliding back and forth and left and right is arranged on the mounting platform 2, a servo motor for driving the rotating disk 3 to rotate is arranged in the motor integrated base, namely, the servo motor and a speed reduction transmission structure are fixed on the mounting platform 2 and drive the hollow rotating disk to rotate at a uniform speed according to a programmable speed V, the design of simulating the programmable duration output of arcing is realized through the hollow rotating disk, the servo motor and the speed reduction transmission structure, the incandescent lamp 5 and the deuterium lamp 4 are respectively horizontally arranged on the motor integrated base and on two sides of the servo motor, and the light emitting heights of the incandescent lamp 5 and the deuterium lamp 4 are equal to and parallel to the rotation central axis of the rotating disk 3; correspondingly, the distance between the incandescent lamp 5 and the deuterium lamp 4 is equal to the diameter of the circumference of the rotating disc 3 provided with the light through hole 3.1, and as long as the diameter (namely the path) of the light through hole 3.1 covers the path of the light emitted by the light source of the deuterium lamp 4, the arc-burning simulation can be realized by shielding and passing light with frequency, specifically, if the rotating disc 3 rotates at the rotating speed V under the driving of the rotating driving device, the shielding and light leakage of ultraviolet light and interference light are realized by the superposition of 2 ultraviolet lamps with the diameter of 10mm and light leakage holes packaged by an incandescent lamp 5 which are symmetrically arranged on a rotating disc 3, the arc burning generation with adjustable arc burning duration and the simulated periodic generation of interference light are realized by adjusting the rotating speed V of the servo motor, and the shapes and the sizes of the apertures of the 2 light leakage holes are determined according to the requirement of the resolution (standard requirement of 0.5 ms) of the arc burning duration detection.
More specifically, the motor integrated base is arranged on the mounting platform 2 through a cross sliding table with a driving device. Incandescent lamp 5 and deuterium lamp 4 integration are on the integrated base of motor, and the integrated base of motor can pull out value direction position through the slip table adjustment on the cross slip table, considers pulling out the value position and confirms the back, and the structure between the integrated base of motor and the installation mesa carries out the secondary and connects and fix, avoids high-speed rotatory vibration and the damage to the cross slip table.
Further, as shown in fig. 5, the mounting platform 2 includes a profile bracket 11 having a stainless steel table 10 ground at the top, the stainless steel table 10 is ground to ensure the flatness thereof, and a lockable universal roller 12 is disposed at the bottom of the profile bracket 11; the stainless steel table top 10 is provided with an installation and rotation hole for installing the motor integrated base. Preferably, the mounting holes are in an M6 matrix hole array, and the distance is 25mm multiplied by 25mm, so that the mounting, fixing and position adjustment of the motor integrated base are facilitated.
Preferably, as shown in fig. 3, a precise scissor-type lifting mechanism 8 driven by an electric push rod is arranged in the adjusting platform 6, the electric push rod is connected with a control cabinet through signals and used for realizing the movement of the adjusting platform 6 in the up-down direction, and a driving wheel in the left-right direction connected with the control cabinet through signals and used for realizing the movement of the adjusting platform 6 in the left-right direction is arranged at the bottom of the adjusting platform 6, that is, after the arcing sensor 1 to be calibrated is installed on the device, alignment adjustment is performed if necessary. The alignment adjustment action can be automatically completed in a mode of directly inputting related parameters or action instructions through the control cabinet, so that errors can be effectively avoided, and the operation is convenient.
More specifically, the front and rear translation platform 7 comprises a movable sliding table 9 for mounting the arcing sensor 1 to be calibrated, and a transmission screw and a guide rail which are arranged in the front and rear directions, the movable sliding table 9 is arranged on the guide rail and driven by the transmission screw to drive the arcing sensor 1 to be calibrated to move in the front and rear directions along the guide rail, the combination of the transmission screw and the guide rail can also ensure the adjustment precision under the premise of considering the stability of the movement, and simultaneously, the screw structure has better positioning, for the arcing sensor 1 to be detected, after the installation and the positioning, the calibration can be better completed in the testing process by a relatively stable environment, so the combination of the transmission screw and the guide rail is selected, in addition, a parallel double-guide-rail structure adopting a servo motor sliding table can also be preferably set, the stability and the support are better, and the arcing collecting sensor is installed through three arcing sensors 1, the sensor is fixed on the front and rear translation platform 7 stably.
Namely, when the vertical direction and the left-right direction are combined and adjusted, the equal energy of the arc sensor 1 to be calibrated of different models can be ensured to be aligned with the light through hole 3.1 on the deuterium lamp 4 light source of the arc module and the hollow turntable after the arc sensor 1 is installed on the device.
Example 3
Corresponding to the arcing calibration devices of embodiments 1 and 2, the present embodiment provides a calibration method for a bow net arcing measurement sensor, which includes an arcing sensor 1 installation and adjustment step, a data acquisition step, and a parameter calibration step.
Specifically, the method comprises the steps of installing and adjusting an arc sensor, namely fixedly arranging the arc sensor 1 to be calibrated on a front and back translation platform 7 on an adjusting platform 6 in a measuring module, adjusting the distance between the arc sensor 1 to be calibrated and a rotating disk 3 on the arc module to be within a preset range by adjusting the distance between the adjusting platform 6 and an installing platform 2 in the arc module and the front and back positions of the front and back translation platform 7, and adjusting the height of the arc sensor 1 to be calibrated and the pull-out value of the rotating disk 3 in the vertical direction and the pull-out value in the horizontal direction to be within the preset range by adjusting the height and the left and right positions of the adjusting platform 6 and/or the installing platform 2;
a data acquisition step, namely, the installation and adjustment step of the arcing sensor 1 is carried out to set the arcing sensor 1 to be calibrated, then a rotating disc 3 on an arcing module is started, the rotating disc is accelerated to a preset rotating speed and keeps the uniform speed, and the theoretical arcing duration, the theoretical arcing interval time and the theoretical arcing times under the current rotating speed condition are recorded; then, a deuterium lamp 4 serving as a simulated ultraviolet light source and/or an incandescent lamp 5 serving as an interference light source on the arcing module are/is lightened, an arcing sensor 1 to be calibrated on the measuring module is started to acquire arcing data, and actual arcing duration, actual arcing interval time and actual arcing times are determined by using actual arcing signals; namely, testing and correspondingly recording the arcing duration and parameter sets of all the arcing sensors 1 to be calibrated under different testing conditions, wherein the different testing conditions refer to different conditions of the aperture of a light through hole 3.1 on a rotating disc 3, the uniform rotating speed of the rotating disc 3, the distance between the arcing sensors 1 to be calibrated and the rotating disc 3, the height in the vertical direction and the pull-out value in the horizontal direction;
a parameter calibration step, which is to respectively establish a numerical mapping relation between the actual arcing duration, the actual arcing interval time and the actual arcing frequency in the data acquisition step and the corresponding theoretical arcing duration, the theoretical arcing interval time and the theoretical arcing frequency, preferably, the calibration and the conversion are carried out according to the corresponding relation between the arcing duration and the testing data of the parameter group of the similar arcing sensors 1 under different testing conditions in all the arcing sensors 1 to be calibrated recorded in the data acquisition step, whether the data acquired by the arcing sensors 1 reappear the arcing duration corresponding to the light-through holes 3.1 on the rotating disc 3 is detected according to the size and the distribution of the light-through holes 3.1 on the rotating disc 3, and the calibration is adjusted until the error between the output frequency of the arcing sensors 1 to be calibrated and the standard frequency generated by simulating the arcing of the deuterium lamp 4 serving as a simulated ultraviolet light source in the arcing module is within +/-1, and the error is within 1, And the error between the arcing duration output by the arcing sensor 1 to be calibrated and the arcing duration generated by simulating the arcing of the deuterium lamp 4 is within 5 percent.
Preferably, in the data acquisition step, the arcing sensor 1 to be calibrated on the measurement module is started to acquire arcing data, if the repeatability of the arcing duration time simulated by the deuterium lamp 4 serving as the simulated ultraviolet light source on the arcing module acquired by the arcing sensor 1 to be calibrated is higher than 95%, the arcing generated by the arcing module simulation is considered to be stable and reliable, otherwise, the arcing sensor 1 is reinstalled, and the measurement module and the arcing module are adjusted in the installation and adjustment step.
Further, in the data acquisition step, all the arcing sensors 1 to be calibrated are replaced with different types of arcing sensors 1 under the same test condition to perform arcing duration and parameter set tests, that is, different types of arcing sensors 1 can be used to perform actual arcing signal acquisition at the same time, and in the parameter calibration step, mapping relations between actual arcing duration, actual arcing interval and actual arcing number of the different types of arcing sensors 1 to be calibrated are established according to the same theoretical arcing duration, theoretical arcing interval and theoretical arcing number.
More specifically, in the parameter calibration step, for the arc sensors 1 of the same type, the arc intensity is determined by integrating the waveform height of the output according to the acquired data, specifically, for the arc sensors 1 of the same type, the arc intensity is determined according to the height of the integrated waveform by integrating the acquired arc signals, the intensity consistency calibration of the arc sensors 1 of the same type is realized, and preferably, the arc duration error is within 5% according to the hardware program interface calibration.
In addition, the requirement on the preset rotating speed V can be reduced by replacing the rotating disk 3 and the light leakage hole of the light source, the aperture of the light leakage hole is selectively set according to the rotating angle and the circumference where the light leakage hole is located, specifically, the rotating speed of the rotating disk 3 is set as V, and the unit is r/min; the resolution of the duration time of arcing is n, the unit is millisecond ms, and the corresponding arcing occurrence degree is
According to the degree of rotation, the rotating disk 3 in which the light-passing hole 3.1 is located is adjustedCircumference and size. Namely, under the condition of the same duration resolution, the higher the rotating speed is, the larger the required rotating angle is; the lower the rotation speed, the smaller the rotation angle required, and the light leakage aperture is set according to the rotation angle and the selection of the circumference in which it is located.
That is, holes with different sizes can be formed on different circumferences of the turntable according to specific requirements, and the longer the circumference of the periphery is, the longer the diameter of the hole or the width of the square is, and the corresponding frequency is also adjusted.
For example, we assume that a rotation speed V =1200r/min of the rotating disc 3, equivalent to 20r/s, 20 x 360 °/s, i.e. 7200 °/s, corresponds to a resolution of 0.5ms, i.e. a resolution of 1/2000s, and a corresponding degree of arcing of 7200 °/2000=3.6 °, i.e. a rotation of the rotating disc 3 angularly by 3.6 ° for a time of 0.5ms at a rotation speed V =1200 r/min;
specifically, when the light leakage hole diameter d1=10mm, d1 has a circular diameter of 3.6 °, and the light leakage hole diameter d2 is about 330mm, at this time, at V =1200r/min, a simulated arcing generation occurs with a period of about 50ms (i.e., 60000 ms/1200), and about 0.5ms (50 ms (3.6/360)) occurs in each period, that is, the arcing duration resolution is 0.5ms, it is determined that 0.5ms corresponds to the rotation angle at the current rotation speed, and the light leakage hole diameter is set according to the rotation angle and the circle selection in which the light leakage hole diameter is located.
If the resolution is increased to 0.25ms, assuming a rotational speed V =1200r/min of the rotating disc 3, equivalent to V =20r/s, V =20 x 360 °/s, i.e. 7200 °/s, then for a resolution of 0.25ms, i.e. 1/4000 s, the corresponding degree of arcing occurs is 7200 °/4000=1.8 °, i.e. for an angular rotation of 1.8 ° for a time of 0.25ms at a rotational speed V =1200 r/min. Similarly, if the duration resolution is reduced, the corresponding rotation angle is reduced.
As for the rotational speed, it is assumed that the duration resolution of the arcing is 0.5 ms. Assuming a rotation speed V =3000r/min of the rotating disc 3 equivalent to 50r/s, 50 x 360 °/s, i.e. 18000 °/s, then a resolution of 0.5ms (i.e. a resolution of 1/2000 s) corresponds to a degree of occurrence of arcing of 18000 °/2000=9 °, i.e. an angular rotation of 9 ° corresponds to a time of 0.5ms at a rotation speed V =3000 r/min. Namely, under the condition of the same duration resolution, the higher the rotating speed is, the larger the required rotating angle is; the lower the rotation speed, the smaller the rotation angle required.
The requirement on the rotating speed V can be reduced by replacing the rotating disk 3 and the light leakage hole of the light source, and the aperture of the light leakage hole is set according to the rotating angle and the circumference of the light leakage hole.
Claims (10)
1. Bow net arcing measurement sensor calibration device, its characterized in that: the device comprises a measuring module and an arc burning module which are arranged oppositely, wherein the measuring module comprises an adjusting platform (6), a front and back translation platform (7) is arranged on the adjusting platform (6), an arc burning sensor (1) to be calibrated is arranged on the front and back translation platform (7), the adjusting platform (6) can move in the vertical direction and the horizontal direction under a control instruction, and the front and back translation platform (7) can drive the arc burning sensor (1) to be calibrated to move in the front and back direction under the control instruction;
the arc burning module comprises a rotating disk (3) which is arranged on the mounting platform (2) and rotates in a vertical plane, the disk surface of the rotating disk (3) faces to the arc burning sensor (1) on the front and back translation platform (7), a plurality of light through holes (3.1) are formed in the same circumference of the rotating disk (3) by taking a rotating center as a circle center, and the mounting platform (2) can adjust the working distance between the rotating disk (3) and the arc burning sensor (1) through front and back movement; a deuterium lamp (4) used for simulating an ultraviolet light source and an incandescent lamp (5) used as an interference light source are arranged on the mounting platform (2) and face the rotating disc (3), the positions of the deuterium lamp (4) and the incandescent lamp (5) are not overlapped, and the radial distance between the arrangement positions of the deuterium lamp (4) and the incandescent lamp (5) and the rotating central axis of the rotating disc (3) is equal to the radius of the circumference where the light through hole (3.1) is located on the rotating disc (3); the rotating disc (3) is positioned between a front and back translation platform (7) of the measuring module and the deuterium lamp (4) and/or incandescent lamp (5), and rotates at a specified rotating speed under a control instruction.
2. The bow net arcing measurement sensor calibration device as set forth in claim 1, wherein: the deuterium lamp (4) used as a simulated ultraviolet light source adopts an integrated packaging structure type deuterium lamp (4) with the wavelength of 200 nm-400 nm, a light outlet of the deuterium lamp (4) is provided with a light leakage hole with the diameter of 10mm, and the tail of a packaging structure of the deuterium lamp (4) adopts an aviation plug to supply power for the deuterium lamp (4).
3. The bow net arcing measurement sensor calibration device as set forth in claim 1, wherein: the incandescent lamp (5) serving as an interference light source is an integrally-packaged incandescent lamp (5), a light outlet of the integrally-packaged structure is provided with a light leakage hole with the diameter of 10mm, the incandescent lamp (5) is arranged close to the light leakage hole in the integrally-packaged structure, and the tail of the packaged structure is provided with a navigation plug for supplying power to the deuterium lamp (4).
4. The bow net arcing measurement sensor calibration device as set forth in claim 1, wherein: the rotary disk (3) is a right-circular disk with the radius of R, a plurality of light through holes (3.1) are arranged on the disk body of the rotary disk (3) and on the circumference which is concentric with the rotary disk (3) and has the radius of R, the light through holes (3.1) are circular or rectangular open holes, the center points of the light through holes (3.1) are located on the same circumference, and when any one of the light through holes (3.1) rotates along with the rotary disk (3) to align with the light outlet of the deuterium lamp (4) or the incandescent lamp (5), the other light through hole (3.1) is just aligned with the light through hole (3.1) of the incandescent lamp (5) or the deuterium lamp (4).
5. The bow net arcing measurement sensor calibration device as set forth in claim 1, wherein: the installation platform (2) is provided with a motor integration base capable of sliding in the front-back direction and the left-right direction, a servo motor used for driving the rotating disc (3) to rotate is arranged in the motor integration base, the incandescent lamp (5) and the deuterium lamp (4) are horizontally arranged on the motor integration base and on the two sides of the servo motor respectively, and the light emitting heights of the incandescent lamp (5) and the deuterium lamp (4) are as high as the rotating central axis of the rotating disc (3); correspondingly, the distance between the incandescent lamp (5) and the deuterium lamp (4) is equal to the diameter of the circumference of the rotating disc (3) provided with the light through hole (3.1).
6. The bow net arcing measurement sensor calibration device as set forth in claim 5, wherein: the motor integration base is arranged on the mounting platform (2) through a cross sliding table with a driving device.
7. A calibration method of a bow net arcing measurement sensor is characterized by comprising the following steps:
the method comprises the steps of installing and adjusting an arcing sensor (1), namely fixedly arranging the arcing sensor (1) to be calibrated on a front and rear translation platform (7) on an adjusting platform (6) in a measuring module, adjusting the distance between the arcing sensor (1) to be calibrated and a rotating disk (3) on the arcing module to a preset range by adjusting the front and rear translation platform (7), and adjusting the height and the left and right positions of the adjusting platform (6) and/or the installing platform (2) to the preset range of the height guide of the arcing sensor (1) to be calibrated and the pull-out value of the rotating disk (3) in the vertical direction and the horizontal direction;
a data acquisition step, namely starting a rotating disk (3) on the arcing module, accelerating to a preset rotating speed, keeping the uniform speed, and recording theoretical arcing duration, theoretical arcing interval time and theoretical arcing times under the current rotating speed condition; a deuterium lamp (4) simulating an ultraviolet light source on the arcing module and/or an incandescent lamp (5) serving as an interference light source are/is lightened, an arcing sensor (1) to be calibrated on the measuring module is started to acquire actual arcing signals, and the actual arcing duration, the actual arcing interval time and the actual arcing times are determined by using the actual arcing signals;
and a parameter calibration step, namely respectively establishing numerical value mapping relations between the actual arcing duration time and the corresponding theoretical arcing duration time, between the actual arcing interval time and between the actual arcing frequency and the corresponding theoretical arcing frequency.
8. The calibration method of the bow net arcing measurement sensor according to claim 7, wherein: in the data acquisition step, different types of arcing sensors (1) are adopted to acquire actual arcing signals, and the parameter calibration step also establishes the mapping relation of the actual arcing duration, the actual arcing interval time and the actual arcing times of the different types of arcing sensors (1) according to the same theoretical arcing duration, the same theoretical arcing interval time and the same theoretical arcing times.
9. The calibration method of the bow net arcing measurement sensor according to claim 7, wherein: in the parameter calibration step, the same type of arcing sensors (1) are integrated according to the acquired arcing signals, and the arcing intensity is judged according to the height of the integrated waveform, so that the intensity consistency calibration of the same type of arcing sensors (1) is realized.
10. The calibration method of the bow net arcing measurement sensor according to claim 7, wherein: setting the rotating speed of the rotating disc (3) as V and the unit as r/min; the resolution of the duration time of arcing is n, the unit is ms, and the rotation degree corresponding to the shortest distinguishable arcing time is
And adjusting the circumference and the size of the rotating disk (3) where the light through hole (3.1) is located according to the rotation degree.
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