CN114964389A - System and method for evaluating running state of pantograph slide plate - Google Patents

System and method for evaluating running state of pantograph slide plate Download PDF

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CN114964389A
CN114964389A CN202210924672.6A CN202210924672A CN114964389A CN 114964389 A CN114964389 A CN 114964389A CN 202210924672 A CN202210924672 A CN 202210924672A CN 114964389 A CN114964389 A CN 114964389A
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slide plate
pantograph
evaluation
coefficient
contact
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CN114964389B (en
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王虹
蒋禹
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Chengdu Kaici Technology Co ltd
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Chengdu Kaici Technology Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
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Abstract

The invention discloses a pantograph slide plate running state evaluation system and method, wherein the pantograph slide plate running state evaluation system comprises a parameter detection system and a parameter evaluation system which are connected with each other, wherein the parameter detection system comprises a contact pressure detection device, a tangential force detection device, a friction factor calculation module, an image acquisition device, a current acquisition device, an arc detection device, an infrared imaging device and a slide plate aging degree detection device. The invention carries out multi-parameter detection on the pantograph slide plate and solves the problem of single detection means of the prior art detection system. Meanwhile, the invention has flexible detection means and accurate detection data. Meanwhile, the running state of the pantograph slide plate can be more truly and accurately reflected through multi-parameter evaluation.

Description

System and method for evaluating running state of pantograph slide plate
Technical Field
The invention belongs to the field of pantograph slide plate operation state detection, and particularly relates to a pantograph slide plate operation state evaluation system and method.
Background
The electric locomotive obtains electric energy from a contact net through the pantograph, and the pantograph slide plate is used as a core part of the pantograph and is important for continuous and stable current taking of the electric locomotive. With the development of high-speed train high-speed and heavy-load, the pantograph slide plate faces a lot of problems such as high operation temperature and severe abrasion, and the system is needed for evaluating the operation state of the pantograph slide plate. At present, the detection method of the pantograph slide plate mainly comprises the following steps: manual detection, contact detection, non-contact detection and image processing technology detection. The manual detection mode can identify most faults, but the state of the pantograph slide plate in the operation process cannot be evaluated by parking detection; the contact type and non-contact type detection detects the slide plate through means of a sensor, ultrasonic waves and the like, can detect the measured change in real time, but the detection item is single and cannot well reflect the running state of the pantograph slide plate; the image processing technology is flexible in detection and inspection items, but the imaging effect is easily influenced by ambient light.
Disclosure of Invention
Aiming at the defects in the prior art, the pantograph slide plate running state evaluation system and method provided by the invention solve the problems that the existing pantograph slide plate running state detection means is single and cannot well reflect the real running state of the pantograph slide plate.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: a pantograph slide plate running state evaluation system comprises a parameter detection system and a parameter evaluation system which are connected with each other;
the parameter detection system comprises contact pressure detection equipment, tangential force detection equipment, a friction factor calculation module, image acquisition equipment, current acquisition equipment, electric arc detection equipment, infrared imaging equipment and sliding plate aging degree detection equipment;
the friction factor calculation module is respectively connected with the contact pressure detection equipment and the tangential force detection equipment;
the contact pressure detection equipment is used for detecting the contact pressure between the pantograph slide plate and the contact line; the tangential force detection equipment is used for calculating the friction force between the contact line and the pantograph slide plate; the friction factor calculation module is used for calculating the friction factor between the pantograph slide plate and the contact line; the image acquisition equipment is used for acquiring the surface image of the pantograph slide plate and calculating the wear loss and the wear thickness of the pantograph slide plate; the current collecting equipment is used for collecting current and calculating the contact failure rate of the pantograph; the arc detection equipment is used for calculating an arc burning rate and a total arc burning rate; the infrared imaging equipment is used for acquiring the temperature of the pantograph sliding plate; the slide plate aging degree detection equipment is used for detecting the ultrasonic wave propagation speed in the pantograph slide plate.
Further: the parameter evaluation system comprises a contact pressure evaluation module, a friction factor evaluation module, a wear evaluation module, an arc evaluation module, a sliding plate temperature evaluation module, a sliding plate aging degree evaluation module and a comprehensive evaluation module;
the contact pressure evaluation module is connected with the contact pressure detection device, the friction factor evaluation module is connected with the friction factor calculation module, the wear evaluation module is connected with the image acquisition device, the arc evaluation module is respectively connected with the current acquisition device and the arc detection device, the skateboard temperature evaluation module is connected with the infrared imaging device, and the skateboard aging degree evaluation module is connected with the skateboard aging degree detection device;
the comprehensive evaluation module is respectively connected with the contact pressure evaluation module, the friction factor evaluation module, the wear evaluation module, the arc evaluation module, the sliding plate temperature evaluation module and the sliding plate aging degree evaluation module;
the contact pressure evaluation module is used for obtaining a contact pressure evaluation coefficient, the friction factor evaluation module is used for obtaining a friction factor evaluation coefficient, the wear evaluation module is used for obtaining a weight wear evaluation coefficient, the arc evaluation module is used for obtaining a contact evaluation coefficient, the slide temperature evaluation module is used for obtaining a base body temperature evaluation coefficient, the slide aging degree evaluation module is used for obtaining an aging degree evaluation coefficient, and the comprehensive evaluation module is used for obtaining an operating state coefficient of the pantograph slide.
A pantograph slide plate running state evaluation method of a pantograph slide plate running state evaluation system comprises the following steps:
s1, collecting parameters of the pantograph slide plate and the contact wire through a parameter detection system;
and S2, inputting the parameters of the pantograph slide plate and the contact wire into a parameter evaluation system to obtain the operating state coefficient of the pantograph slide plate, and finishing the evaluation of the operating state of the pantograph slide plate.
Further: in S1, the parameters of the pantograph slide plate and the contact wire include a contact pressure between the pantograph slide plate and the contact wire, a friction force between the pantograph slide plate and the contact wire, a friction factor between the pantograph slide plate and the contact wire, an amount of wear of the pantograph slide plate, a wear thickness of the pantograph slide plate, a pantograph contact failure rate, an arcing rate, a total arcing rate, a pantograph slide plate temperature, and an ultrasonic propagation speed in the pantograph slide plate.
Further, the method comprises the following steps: the method for determining the contact pressure between the pantograph slide plate and the contact line specifically comprises the following steps:
measuring the pressure of four positions set by the pantograph through contact pressure detection equipment, and calculating the contact pressure between the pantograph sliding plate and the contact line according to the pressure of the four positions; wherein the contact pressure between the pantograph slide plate and the contact line is calculated
Figure 242428DEST_PATH_IMAGE001
The expression (c) is specifically:
Figure 425148DEST_PATH_IMAGE002
in the formula (I), the compound is shown in the specification,
Figure 532781DEST_PATH_IMAGE003
the pressures at the four positions are respectively the pressures at the four positions,
Figure 499935DEST_PATH_IMAGE004
is a first coefficient of the first,
Figure 970100DEST_PATH_IMAGE005
is a second coefficient of the first coefficient,
Figure 323721DEST_PATH_IMAGE006
is a third coefficient which is a function of the third coefficient,
Figure 262858DEST_PATH_IMAGE007
is the fourth coefficient;
the method for determining the friction force between the pantograph slide plate and the contact line specifically comprises the following steps:
the force acting on the pantograph slide plate in the horizontal direction is detected by a tangential force detection device, and the frictional force between the contact wire and the pantograph slide plate is calculated by the following formulaf(ii) a Wherein the force acting on the pantograph slide plate in the horizontal direction comprises a horizontal component of aerodynamic force and a friction force between the contact line and the pantograph slide plate;
Figure 992917DEST_PATH_IMAGE008
Figure 317588DEST_PATH_IMAGE009
in the formula (I), the compound is shown in the specification,
Figure 842110DEST_PATH_IMAGE010
the device is the aerodynamic force of the air,
Figure 2964DEST_PATH_IMAGE011
is a horizontal component of the aerodynamic force,
Figure 271134DEST_PATH_IMAGE012
in order to speed the locomotive on which the pantograph is mounted,
Figure 450312DEST_PATH_IMAGE013
is a constant coefficient independent of the working height of the bow of the pantograph,
Figure 614577DEST_PATH_IMAGE014
is a constant factor regardless of the operating position of the pantograph,
Figure 387361DEST_PATH_IMAGE015
the force which is applied to the pantograph slide plate in the horizontal direction and is opposite to the movement direction;
the method for determining the friction factor between the pantograph slide plate and the contact line specifically comprises the following steps:
calculating the friction factor according to the following formula by a friction factor calculation module
Figure 69009DEST_PATH_IMAGE016
；
Figure 243638DEST_PATH_IMAGE017
。
Further: the method for determining the wear amount and the wear thickness of the pantograph pan comprises the following sub-steps:
SA1, collecting the surface image of the pantograph slide plate through an image collecting device;
SA2, filtering the surface image of the pantograph slide plate by a median filtering method to obtain a filtered image;
SA3, performing convolution integral on the filtered image, and calculating the abrasion loss of the pantograph slide plate according to the following formula;
Figure 500176DEST_PATH_IMAGE018
in the formula (I), the compound is shown in the specification,
Figure 760256DEST_PATH_IMAGE019
in order to be a function of the loss,
Figure 245595DEST_PATH_IMAGE020
is a state class
Figure 477993DEST_PATH_IMAGE021
Is
Figure 780799DEST_PATH_IMAGE022
The loss of the carbon dioxide gas is reduced,
Figure 387230DEST_PATH_IMAGE023
is a state class
Figure 800893DEST_PATH_IMAGE024
A predicted probability of (d);
Figure 825481DEST_PATH_IMAGE025
is a state class
Figure 299188DEST_PATH_IMAGE024
Is a valid value of
Figure 471543DEST_PATH_IMAGE024
A value other than 0;
Figure 542093DEST_PATH_IMAGE026
in order to be a function of the regression loss,
Figure 545821DEST_PATH_IMAGE027
in order to predict the position of the mobile terminal,
Figure 65795DEST_PATH_IMAGE028
is a real area;
SA4, calculating the gradient amplitude and direction of the image after filtering processing through a gradient operator, and comparing the edge image of the pantograph slide plate with the edge image of the initial pantograph slide plate to obtain the abrasion thickness of the slide plate;
the method for determining the contact failure rate of the pantograph specifically comprises the following steps:
collecting the current transmitted between the pantograph slide plate and the contact wire through a current collecting device, and calculating the contact failure rate of the pantograph through the following formulaCQ；
Figure 522184DEST_PATH_IMAGE029
In the formula (II)
Figure 667864DEST_PATH_IMAGE030
For the duration of the contact failure,
Figure 260519DEST_PATH_IMAGE031
the time for measuring the current to exceed the nominal 30% of the measurement.
Further: the method for determining the arc ignition rate and the total arc ignition rate specifically comprises the following steps:
the arc occurrence time and duration are detected by an arc detection device, and the arc rate is calculated by the following formula
Figure 951395DEST_PATH_IMAGE032
(ii) a Further cooperate withImage acquisition equipment acquires visible light arcing duration to calculate total arcing rate
Figure 895080DEST_PATH_IMAGE033
；
Figure 657500DEST_PATH_IMAGE034
In the formula (I), the compound is shown in the specification,
Figure 494874DEST_PATH_IMAGE035
for an arcing duration of more than 5ms,
Figure 215706DEST_PATH_IMAGE036
to measure the time that the current exceeds the nominal 30%,
Figure 787633DEST_PATH_IMAGE037
the visible light arcing duration;
the pantograph slide plate temperature comprises a pantograph slide plate base body temperature and a contact area temperature, and the method for determining the pantograph slide plate temperature specifically comprises the following steps:
collecting the substrate temperature and the contact area temperature of the pantograph sliding plate through infrared imaging equipment;
determining ultrasonic propagation velocity within the pantograph pan
Figure 884902DEST_PATH_IMAGE038
The expression (c) is specifically:
Figure 842362DEST_PATH_IMAGE039
in the formula (I), the compound is shown in the specification,Hthe thickness of the pantograph sliding plate is set as the thickness,tthe propagation time of the ultrasonic wave in the slide plate is shown.
Further: the step S2 specifically includes:
and inputting parameters of the pantograph slide plate and the contact line into a parameter evaluation system to obtain a contact pressure evaluation coefficient, a friction factor evaluation coefficient, a weight wear evaluation coefficient, a height wear evaluation coefficient, a contact evaluation coefficient, an arcing evaluation coefficient, a substrate temperature evaluation coefficient, a contact area temperature evaluation coefficient and an aging degree evaluation coefficient, further calculating to obtain a pantograph slide plate running state coefficient, and finishing the pantograph slide plate running state evaluation.
Further: obtaining the contact pressure evaluation coefficient
Figure 734095DEST_PATH_IMAGE040
The method comprises the following steps:
comparing the contact pressure between the pantograph slide plate and the contact line with the contact pressure specified range of the set contact pressure performance value table and the contact pressure value range table;
when the contact pressure between the pantograph slide plate and the contact line exceeds the contact pressure specified range of the contact pressure performance value table and is in the contact pressure specified range of the contact pressure value range table, the contact pressure evaluation coefficient
Figure 527738DEST_PATH_IMAGE040
Is 0.4;
when the contact pressure between the pantograph slide plate and the contact line exceeds the contact pressure specified range of the contact pressure value range table, the contact pressure evaluation coefficient
Figure 631961DEST_PATH_IMAGE040
Is 1;
obtaining the evaluation coefficient of the friction factor
Figure 53715DEST_PATH_IMAGE041
The method comprises the following steps:
judging whether the difference value between the friction factor between the pantograph slide plate and the contact line and the friction factor of the set friction factor table exceeds 25% of the friction factor of the set friction factor table;
if yes, the coefficient of friction factor evaluation
Figure 506562DEST_PATH_IMAGE041
Is 1; if not. Coefficient of friction factor evaluation
Figure 646556DEST_PATH_IMAGE041
Is 0;
obtaining the weight wear evaluation coefficient
Figure 492152DEST_PATH_IMAGE042
The method comprises the following steps:
judging whether the abrasion loss of the pantograph slide plate is smaller than a weight abrasion threshold value in a set weight abrasion ratio table or not;
if so, the weight wear coefficient
Figure 33992DEST_PATH_IMAGE042
Is 0; if not, the weight abrasion evaluation coefficient
Figure 657740DEST_PATH_IMAGE042
Is 1;
obtaining the high abrasion evaluation coefficient
Figure 488293DEST_PATH_IMAGE043
The method comprises the following steps:
judging whether the wear thickness of the pantograph slide plate is smaller than a high wear threshold value in a set high wear ratio table;
if so, the high wear assessment factor
Figure 731055DEST_PATH_IMAGE043
Is 0; if not, the high abrasion evaluation coefficient
Figure 2768DEST_PATH_IMAGE043
Is 1;
obtaining the contact evaluation coefficient
Figure 672784DEST_PATH_IMAGE044
The method comprises the following steps:
judging whether the contact failure rate of the pantograph is smaller than a contact failure rate threshold value in a set arc performance value table; if so, the contact evaluation coefficient
Figure 177583DEST_PATH_IMAGE044
Is 0; if not, the contact evaluation coefficient
Figure 958457DEST_PATH_IMAGE044
Is 1;
obtaining the arcing evaluation coefficient
Figure 350256DEST_PATH_IMAGE045
The method comprises the following steps:
judging whether the arc burning rate and the total arc burning rate are both smaller than an arc burning rate threshold value and a total arc burning rate threshold value in the set arc performance value table;
if yes, the arcing evaluation coefficient
Figure 191173DEST_PATH_IMAGE045
Is 0; if not, the arcing evaluation coefficient
Figure 996318DEST_PATH_IMAGE045
Is 1;
obtaining the evaluation coefficient of the substrate temperature
Figure 705517DEST_PATH_IMAGE046
The method comprises the following steps:
judging whether the temperature of the pantograph sliding plate base body is smaller than a sliding plate base body temperature threshold value or not;
if yes, the evaluation coefficient of the substrate temperature
Figure 76455DEST_PATH_IMAGE046
Is 0; if not, the evaluation coefficient of the substrate temperature
Figure 963640DEST_PATH_IMAGE046
Is 1;
obtaining the temperature evaluation coefficient of the contact area
Figure 52818DEST_PATH_IMAGE047
The method comprises the following steps:
judging whether the temperature of the contact area is smaller than a contact area temperature threshold value or not;
if so, the contact regionCoefficient of field temperature estimation
Figure 305988DEST_PATH_IMAGE047
Is 0; if not, the temperature evaluation coefficient of the contact area
Figure 797013DEST_PATH_IMAGE047
Is 1;
obtaining the aging degree evaluation coefficient
Figure 855098DEST_PATH_IMAGE048
The method comprises the following steps:
comparing the ultrasonic propagation speed in the pantograph slide plate with the ultrasonic sound velocity in the set slide plate aging degree table to obtain a corresponding judgment result;
when the judgment result is non-aging, the aging degree evaluation coefficient
Figure 431573DEST_PATH_IMAGE048
Is 0;
when the determination result is light, the aging degree evaluation coefficient
Figure 482575DEST_PATH_IMAGE048
Is 0.3;
when the determination result is more serious, the aging degree evaluation coefficient
Figure 562526DEST_PATH_IMAGE048
Is 0.6;
when the determination result is serious, the aging degree evaluation coefficient
Figure 57093DEST_PATH_IMAGE048
Is 1.
Further: in step S2, the pantograph pan operating state coefficient is calculatedKThe expression (c) is specifically:
Figure 58547DEST_PATH_IMAGE049
in the formula (I), the compound is shown in the specification,
Figure 788605DEST_PATH_IMAGE050
is a first scale factor and is a ratio of,
Figure 847697DEST_PATH_IMAGE051
is a second scaling factor to be used for the second scaling factor,
Figure 309902DEST_PATH_IMAGE052
is a third scaling factor and is a function of the third scaling factor,
Figure 595390DEST_PATH_IMAGE053
is a fourth scaling factor and is a function of the fourth scaling factor,
Figure 988194DEST_PATH_IMAGE054
is a fifth scaling factor and is a function of the third scaling factor,
Figure 42738DEST_PATH_IMAGE055
is a sixth scaling factor and is a function of,
Figure 207003DEST_PATH_IMAGE056
is the seventh scaling factor and is the third scaling factor,
Figure 589574DEST_PATH_IMAGE057
is an eighth scaling factor that is a function of,
Figure 661435DEST_PATH_IMAGE058
is the ninth scale factor.
The invention has the beneficial effects that: the invention carries out multi-parameter detection on the pantograph slide plate and solves the problem of single detection means of the prior art detection system. Meanwhile, the invention has flexible detection means and accurate detection data. Meanwhile, the running state of the pantograph slide plate can be more truly and accurately reflected through multi-parameter evaluation.
Drawings
FIG. 1 is a block diagram of the system architecture of the present invention.
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1:
in one embodiment of the present invention, as shown in fig. 1, a pantograph pan operating condition evaluation system includes a parameter detection system and a parameter evaluation system connected to each other;
the parameter detection system comprises contact pressure detection equipment, tangential force detection equipment, a friction factor calculation module, image acquisition equipment, current acquisition equipment, electric arc detection equipment, infrared imaging equipment and sliding plate aging degree detection equipment;
the friction factor calculation module is respectively connected with the contact pressure detection equipment and the tangential force detection equipment;
the contact pressure detection equipment is used for detecting the contact pressure between the pantograph slide plate and the contact line; the tangential force detection equipment is used for calculating the friction force between the contact line and the pantograph slide plate; the friction factor calculation module is used for calculating the friction factor between the pantograph slide plate and the contact line; the image acquisition equipment is used for acquiring the surface image of the pantograph slide plate and calculating the wear loss and the wear thickness of the pantograph slide plate; the current collecting equipment is used for collecting current and calculating the contact failure rate of the pantograph; the arc detection equipment is used for calculating an arc burning rate and a total arc burning rate; the infrared imaging equipment is used for acquiring the temperature of the pantograph sliding plate; the slide plate aging degree detection equipment is used for detecting the ultrasonic propagation speed in the pantograph slide plate.
The parameter evaluation system comprises a contact pressure evaluation module, a friction factor evaluation module, a wear evaluation module, an arc evaluation module, a sliding plate temperature evaluation module, a sliding plate aging degree evaluation module and a comprehensive evaluation module;
the contact pressure evaluation module is connected with the contact pressure detection device, the friction factor evaluation module is connected with the friction factor calculation module, the wear evaluation module is connected with the image acquisition device, the arc evaluation module is respectively connected with the current acquisition device and the arc detection device, the skateboard temperature evaluation module is connected with the infrared imaging device, and the skateboard aging degree evaluation module is connected with the skateboard aging degree detection device;
the comprehensive evaluation module is respectively connected with the contact pressure evaluation module, the friction factor evaluation module, the wear evaluation module, the arc evaluation module, the sliding plate temperature evaluation module and the sliding plate aging degree evaluation module;
the contact pressure evaluation module is used for obtaining a contact pressure evaluation coefficient, the friction factor evaluation module is used for obtaining a friction factor evaluation coefficient, the wear evaluation module is used for obtaining a weight wear evaluation coefficient, the arc evaluation module is used for obtaining a contact evaluation coefficient, the slide temperature evaluation module is used for obtaining a base body temperature evaluation coefficient, the slide aging degree evaluation module is used for obtaining an aging degree evaluation coefficient, and the comprehensive evaluation module is used for obtaining an operating state coefficient of the pantograph slide.
Example 2:
the embodiment of the present invention is directed to a specific implementation method of a pantograph slide operating state evaluation system, and the evaluation of the pantograph slide operating state is performed by taking a train C6081 on a rhinoceros-leaving park section as an object,
as shown in fig. 2, a pantograph slide plate operation state evaluation method includes the following steps:
s1, collecting parameters of the pantograph slide plate and the contact wire through a parameter detection system;
and S2, inputting the parameters of the pantograph slide plate and the contact wire into a parameter evaluation system to obtain the operating state coefficient of the pantograph slide plate, and finishing the evaluation of the operating state of the pantograph slide plate.
In S1, the parameters of the pantograph slide plate and the contact wire include a contact pressure between the pantograph slide plate and the contact wire, a friction force between the pantograph slide plate and the contact wire, a friction factor between the pantograph slide plate and the contact wire, an amount of wear of the pantograph slide plate, a wear thickness of the pantograph slide plate, a pantograph contact failure rate, an arcing rate, a total arcing rate, a pantograph slide plate temperature, and an ultrasonic propagation speed in the pantograph slide plate.
The method for determining the contact pressure between the pantograph slide plate and the contact line specifically comprises the following steps:
measuring the pressure of four positions set by the pantograph through contact pressure detection equipment, and calculating the contact pressure between the pantograph sliding plate and the contact line according to the pressure of the four positions; wherein the contact pressure between the pantograph slide plate and the contact line is calculated
Figure 960698DEST_PATH_IMAGE059
The expression (c) is specifically:
Figure 916251DEST_PATH_IMAGE060
in the formula (I), the compound is shown in the specification,
Figure DEST_PATH_IMAGE061
the pressures at the four positions are respectively the pressures at the four positions,
Figure 296286DEST_PATH_IMAGE062
is a first coefficient of the first,
Figure DEST_PATH_IMAGE063
is a second coefficient of the first coefficient,
Figure 513772DEST_PATH_IMAGE064
is a function of the third coefficient and is,
Figure DEST_PATH_IMAGE065
is the fourth coefficient;
in the present embodiment, the pressures at the four positions are respectively
Figure 64577DEST_PATH_IMAGE066
、
Figure DEST_PATH_IMAGE067
、
Figure 986396DEST_PATH_IMAGE068
、
Figure DEST_PATH_IMAGE069
，
Figure 112615DEST_PATH_IMAGE070
The content of the carbon dioxide is 0.16,
Figure DEST_PATH_IMAGE071
the content of the acid-base reaction product is 0.04,
Figure 593013DEST_PATH_IMAGE072
the content of the acid-base reaction product is 0.1,
Figure DEST_PATH_IMAGE073
is 0.7, the contact pressure is calculated
Figure 476786DEST_PATH_IMAGE074
。
The method for determining the friction force between the pantograph slide plate and the contact line specifically comprises the following steps:
the force acting on the pantograph slide plate in the horizontal direction is detected by a tangential force detection device, and the frictional force between the contact wire and the pantograph slide plate is calculated by the following formulaf(ii) a Wherein the force acting on the pantograph slide plate in the horizontal direction comprises a horizontal component of aerodynamic force and a friction force between the contact line and the pantograph slide plate;
Figure DEST_PATH_IMAGE075
in the formula (I), the compound is shown in the specification,
Figure 972271DEST_PATH_IMAGE076
the power is the air power,
Figure DEST_PATH_IMAGE077
is a horizontal component of the aerodynamic force,
Figure 749734DEST_PATH_IMAGE078
in order to speed the locomotive on which the pantograph is mounted,
Figure DEST_PATH_IMAGE079
is a constant coefficient independent of the working height of the bow of the pantograph,
Figure 574602DEST_PATH_IMAGE080
is a constant factor regardless of the operating position of the pantograph,
Figure DEST_PATH_IMAGE081
the force which is applied to the pantograph slide plate in the horizontal direction and is opposite to the movement direction;
the above-mentioned
Figure 303261DEST_PATH_IMAGE082
And
Figure DEST_PATH_IMAGE083
the values of (A) are shown in the following table.
Figure 894779DEST_PATH_IMAGE084
The method for determining the friction factor between the pantograph slide plate and the contact line specifically comprises the following steps:
calculating the friction factor according to the following formula by a friction factor calculation module
Figure DEST_PATH_IMAGE085
；
Figure 526749DEST_PATH_IMAGE086
。
In this embodiment, the speed of the pantograph mounted locomotive is detected
Figure DEST_PATH_IMAGE087
The force in the horizontal direction of the pantograph slide plate opposite to the movement direction
Figure 115993DEST_PATH_IMAGE088
Then, then
Figure DEST_PATH_IMAGE089
，
Figure 597528DEST_PATH_IMAGE090
；
The method for determining the wear amount and the wear thickness of the pantograph pan comprises the following sub-steps:
SA1, collecting the surface image of the pantograph pan through an image collecting device;
SA2, filtering the surface image of the pantograph slide plate by a median filtering method to obtain a filtered image;
SA3, performing convolution integral on the filtered image, and calculating the abrasion loss of the pantograph slide plate according to the following formula;
Figure DEST_PATH_IMAGE091
in the formula (I), the compound is shown in the specification,
Figure 930420DEST_PATH_IMAGE092
in order to be a function of the loss,
Figure DEST_PATH_IMAGE093
is a state class
Figure 151317DEST_PATH_IMAGE094
Is/are as follows
Figure DEST_PATH_IMAGE095
The loss of the carbon dioxide gas is reduced,
Figure 177042DEST_PATH_IMAGE096
is a state class
Figure DEST_PATH_IMAGE097
A predicted probability of (d);
Figure 552397DEST_PATH_IMAGE098
is a state class
Figure DEST_PATH_IMAGE099
Is a valid value of
Figure 688981DEST_PATH_IMAGE099
A value other than 0;
Figure 623439DEST_PATH_IMAGE100
in order to be a function of the regression loss,
Figure DEST_PATH_IMAGE101
in order to predict the position of the mobile terminal,
Figure 820065DEST_PATH_IMAGE102
is a real area;
in this embodiment, the image capturing device is composed of a high-definition camera and an image processing system, and the wear amount of the pantograph pan calculated by the loss function is
Figure DEST_PATH_IMAGE103
；
SA4, calculating the gradient amplitude and direction of the image after filtering processing through a gradient operator, and comparing the edge image of the pantograph slide plate with the edge image of the initial pantograph slide plate to obtain the abrasion thickness of the slide plate;
in this example, the wear thickness of the slider was obtained to be
Figure 340690DEST_PATH_IMAGE104
。
The method for determining the contact failure rate of the pantograph specifically comprises the following steps:
collecting the current transmitted between the pantograph slide plate and the contact wire through a current collecting device, and calculating the contact failure rate of the pantograph through the following formula
Figure DEST_PATH_IMAGE105
；
Figure 15385DEST_PATH_IMAGE106
In the formula (II)
Figure DEST_PATH_IMAGE107
For the duration of the contact failure,
Figure 210874DEST_PATH_IMAGE108
the time for measuring the current to exceed the nominal 30% of the measurement.
In the embodiment, the current collecting equipment adopts the Hall sensor to collect current, and the calculated pantograph contact failure rate
Figure DEST_PATH_IMAGE109
。
The method for the arc burning rate and the total arc burning rate specifically comprises the following steps:
the arc occurrence time and duration are detected by an arc detection device, and the arc rate is calculated by the following formulaNQ(ii) a And then the total arcing rate is calculated by matching with the visible light arcing duration collected by the image collecting equipmentAQ；
Figure 578402DEST_PATH_IMAGE110
In the formula (I), the compound is shown in the specification,
Figure DEST_PATH_IMAGE111
for an arcing duration of more than 5ms,
Figure 990666DEST_PATH_IMAGE112
to measure the time that the current exceeds the nominal 30%,
Figure DEST_PATH_IMAGE113
the visible light arcing duration;
in the embodiment, the arc detection equipment comprises a Hilbert fractal antenna and an arc information processing module, wherein the Hilbert fractal antenna is installed on the roof of the train and used for detecting the time and duration of the occurrence of the arc, and the sum of the time and duration of the occurrence of the arc is detected through the arc detection equipmentDuration, calculating to obtain the arcing rate
Figure 469052DEST_PATH_IMAGE114
Total arc rate
Figure DEST_PATH_IMAGE115
。
The pantograph slide plate temperature comprises a pantograph slide plate base body temperature and a contact area temperature, and the method for determining the pantograph slide plate temperature specifically comprises the following steps: collecting the substrate temperature and the contact area temperature of the pantograph sliding plate through infrared imaging equipment;
dividing the acquired infrared image of the pantograph pan by using an image processing method, and dividing the temperature of the pantograph pan into a contact area temperature and a pantograph pan substrate temperature, wherein the contact area temperature
Figure 50206DEST_PATH_IMAGE116
Temperature of base body of pantograph slide plate
Figure DEST_PATH_IMAGE117
。
Determining ultrasonic propagation velocity within the pantograph pan
Figure 323056DEST_PATH_IMAGE118
The expression (c) is specifically:
Figure DEST_PATH_IMAGE119
。
in the formula (I), the compound is shown in the specification,
Figure 160300DEST_PATH_IMAGE120
the thickness of the pantograph sliding plate is set as the thickness,
Figure DEST_PATH_IMAGE121
the propagation time of the ultrasonic wave in the slide plate is shown.
In the embodiment, the aging degree of the pantograph pan is judged by detecting the propagation speed of the ultrasonic wave in the pantograph pan, and the ultrasonic wave propagation is calculatedSpeed of rotation
Figure 176797DEST_PATH_IMAGE122
。
The step S2 specifically includes:
and inputting parameters of the pantograph slide plate and the contact line into a parameter evaluation system to obtain a contact pressure evaluation coefficient, a friction factor evaluation coefficient, a weight wear evaluation coefficient, a height wear evaluation coefficient, a contact evaluation coefficient, an arcing evaluation coefficient, a substrate temperature evaluation coefficient, a contact area temperature evaluation coefficient and an aging degree evaluation coefficient, further calculating to obtain a pantograph slide plate running state coefficient, and finishing the pantograph slide plate running state evaluation.
Obtaining the contact pressure evaluation coefficient
Figure DEST_PATH_IMAGE123
The method comprises the following steps:
comparing the contact pressure between the pantograph slide plate and the contact line with the contact pressure specified range of the set contact pressure performance value table and the contact pressure value range table;
in this embodiment, the contact pressure between the pantograph slide plate and the contact line is compared with the contact pressure specification range of the contact pressure performance value table and the contact pressure value range table to obtain the contact pressure evaluation coefficient
Figure 612458DEST_PATH_IMAGE123
Is 0.4;
when the contact pressure between the pantograph slide plate and the contact line exceeds the contact pressure specified range of the contact pressure value range table, the contact pressure evaluation coefficient
Figure 649684DEST_PATH_IMAGE123
Is 1;
Figure 770961DEST_PATH_IMAGE124
wherein, the first and the second end of the pipe are connected with each other,
Figure 184625DEST_PATH_IMAGE126
is the maximum standard deviation of contact pressure, v 1 Locomotive speed for pantograph installation.
Figure DEST_PATH_IMAGE127
Obtaining the evaluation coefficient of the friction factor
Figure 209213DEST_PATH_IMAGE128
The method comprises the following steps:
judging whether the difference value between the friction factor between the pantograph slide plate and the contact line and the friction factor of the set friction factor table exceeds 25% of the friction factor of the set friction factor table;
if yes, the coefficient of friction factor evaluation
Figure 558286DEST_PATH_IMAGE128
Is 1; if not. Coefficient of friction factor evaluation
Figure 199483DEST_PATH_IMAGE128
Is 0;
Figure DEST_PATH_IMAGE129
in the embodiment, the friction factor between the pantograph slide plate and the contact line is compared with the set friction factor table to obtain the friction factor evaluation coefficient
Figure 796598DEST_PATH_IMAGE128
Is 0.
Judging whether the abrasion loss of the pantograph slide plate is less than a weight abrasion threshold value in a set weight abrasion ratio table;
if so, the weight wear coefficient
Figure 472430DEST_PATH_IMAGE130
Is 0; if not, the weight abrasion evaluation coefficient
Figure 585880DEST_PATH_IMAGE130
Is 1;
obtaining the high abrasion evaluation coefficient
Figure DEST_PATH_IMAGE131
The method comprises the following steps:
judging whether the wear thickness of the pantograph slide plate is smaller than a high wear threshold value in a set high wear ratio table;
if so, the high wear assessment factor
Figure 120897DEST_PATH_IMAGE131
Is 0; if not, the high abrasion evaluation coefficient
Figure 610785DEST_PATH_IMAGE131
Is 1;
in the present example, the weight abrasion ratio table and the height abrasion ratio table are specified as the following tables. The weight wear evaluation coefficient obtained according to the following table
Figure 374079DEST_PATH_IMAGE130
As 1, high abrasion evaluation coefficient
Figure 64954DEST_PATH_IMAGE131
Is 0.
Figure 680744DEST_PATH_IMAGE132
Obtaining the contact evaluation coefficient
Figure DEST_PATH_IMAGE133
The method comprises the following steps:
judging whether the contact failure rate of the pantograph is smaller than a contact failure rate threshold value in a set arc performance value table or not; if so, the contact evaluation coefficient
Figure 115267DEST_PATH_IMAGE133
Is 0; if not, the contact evaluation coefficient
Figure 733068DEST_PATH_IMAGE133
Is 1;
obtaining the arcing evaluation coefficient
Figure 719478DEST_PATH_IMAGE134
The method comprises the following steps:
judging whether the arc burning rate and the total arc burning rate are both smaller than an arc burning rate threshold value and a total arc burning rate threshold value in a set arc performance value table;
if yes, the arcing evaluation coefficient
Figure 822564DEST_PATH_IMAGE134
Is 0; if not, the arcing evaluation coefficient
Figure 795199DEST_PATH_IMAGE134
Is 1;
in this embodiment, the pantograph contact failure rate, the arcing rate and the total arcing rate are compared with an arc performance value table to obtain an arcing evaluation coefficient
Figure 362446DEST_PATH_IMAGE134
Is 1, contact evaluation coefficient
Figure 129545DEST_PATH_IMAGE133
Take 0.
Figure DEST_PATH_IMAGE135
v 1 Locomotive speed for pantograph installation.
Obtaining the evaluation coefficient of the substrate temperature
Figure 952883DEST_PATH_IMAGE136
The method comprises the following steps:
judging whether the temperature of the base body of the pantograph sliding plate is smaller than a threshold value of the temperature of the base body of the sliding plate;
if yes, the evaluation coefficient of the substrate temperature
Figure 588263DEST_PATH_IMAGE136
Is 0; if not, the evaluation coefficient of the substrate temperature
Figure 150963DEST_PATH_IMAGE136
Is 1;
obtaining the temperature evaluation coefficient of the contact area
Figure DEST_PATH_IMAGE137
The method comprises the following steps:
judging whether the temperature of the contact area is smaller than a contact area temperature threshold value or not;
if yes, the temperature evaluation coefficient of the contact area
Figure 682438DEST_PATH_IMAGE137
Is 0; if not, the temperature evaluation coefficient of the contact area
Figure 25695DEST_PATH_IMAGE137
Is 1;
in this embodiment, the slider substrate temperature threshold is 600 ℃ and the contact region temperature threshold is 1000 ℃. Obtaining a substrate temperature evaluation coefficient according to the collected contact area temperature and the pantograph slide plate substrate temperature
Figure 402450DEST_PATH_IMAGE136
As 0, contact area temperature evaluation coefficient
Figure 312331DEST_PATH_IMAGE137
Is 1.
Obtaining the aging degree evaluation coefficient
Figure 811446DEST_PATH_IMAGE138
The method comprises the following steps:
comparing the ultrasonic propagation speed in the pantograph slide plate with the ultrasonic sound velocity in the set slide plate aging degree table to obtain a corresponding judgment result;
when the judgment result is non-aging, the aging degree evaluation coefficient
Figure 314102DEST_PATH_IMAGE140
Is 0;
when the determination result is light, the aging degree evaluation coefficient
Figure 291286DEST_PATH_IMAGE138
Is 0.3;
when the determination result is more serious, the aging degree evaluation coefficient
Figure 828577DEST_PATH_IMAGE138
Is 0.6;
when the determination result is serious, the aging degree evaluation coefficient
Figure 498593DEST_PATH_IMAGE138
Is 1.
Figure DEST_PATH_IMAGE141
In this embodiment, the ultrasonic propagation speed in the pantograph slide plate is compared with the slide plate aging degree table to obtain the aging degree evaluation coefficient
Figure 19704DEST_PATH_IMAGE142
Is 0.
In step S2, the pantograph slide plate operating state coefficient is calculated
Figure DEST_PATH_IMAGE143
The expression of (c) is specifically:
Figure 705638DEST_PATH_IMAGE144
in the formula (I), the compound is shown in the specification,
Figure DEST_PATH_IMAGE145
is a first scale factor and is a function of,
Figure 628595DEST_PATH_IMAGE146
is in the second ratioThe coefficients of which are such that,
Figure DEST_PATH_IMAGE147
is a third scaling factor and is a function of the third scaling factor,
Figure 610458DEST_PATH_IMAGE148
is a fourth scaling factor and is a function of the fourth scaling factor,
Figure DEST_PATH_IMAGE149
is a fifth scaling factor and is a function of the third scaling factor,
Figure 618865DEST_PATH_IMAGE150
is a sixth scaling factor and is a function of,
Figure DEST_PATH_IMAGE151
is the seventh scaling factor and is the third scaling factor,
Figure 108490DEST_PATH_IMAGE152
is the eighth scaling factor and is the fourth scaling factor,
Figure DEST_PATH_IMAGE153
is the ninth scale factor. The value of the scaling factor is shown in the scaling factor value table.
Figure 885953DEST_PATH_IMAGE154
Figure DEST_PATH_IMAGE155
And the comprehensive evaluation module calculates to obtain the running state coefficient of the pantograph slide plate, compares the running state coefficient of the pantograph slide plate with the running state grade table to obtain the running state grade of the pantograph slide plate, and finishes the evaluation of the running state of the pantograph slide plate.
The invention has the beneficial effects that: the invention carries out multi-parameter detection on the pantograph slide plate and solves the problem of single detection means of the prior art detection system. Meanwhile, the invention has flexible detection means and accurate detection data. Meanwhile, the running state of the pantograph slide plate can be more truly and accurately reflected through multi-parameter evaluation.
In the description of the present invention, it is to be understood that the terms "center", "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of such features.

Claims (10)

1. A pantograph slide plate running state evaluation system is characterized by comprising a parameter detection system and a parameter evaluation system which are connected with each other;
the parameter detection system comprises contact pressure detection equipment, tangential force detection equipment, a friction factor calculation module, image acquisition equipment, current acquisition equipment, electric arc detection equipment, infrared imaging equipment and sliding plate aging degree detection equipment;
the friction factor calculation module is respectively connected with the contact pressure detection equipment and the tangential force detection equipment;
the contact pressure detection equipment is used for detecting the contact pressure between the pantograph slide plate and the contact line; the tangential force detection equipment is used for calculating the friction force between the contact line and the pantograph slide plate; the friction factor calculation module is used for calculating the friction factor between the pantograph slide plate and the contact line; the image acquisition equipment is used for acquiring the surface image of the pantograph slide plate and calculating the wear loss and the wear thickness of the pantograph slide plate; the current collecting equipment is used for collecting current and calculating the contact failure rate of the pantograph; the arc detection equipment is used for calculating an arc burning rate and a total arc burning rate; the infrared imaging equipment is used for acquiring the temperature of the pantograph sliding plate; the slide plate aging degree detection equipment is used for detecting the ultrasonic wave propagation speed in the pantograph slide plate.
2. The pantograph slide operating condition evaluation system of claim 1, wherein the parameter evaluation system comprises a contact pressure evaluation module, a friction factor evaluation module, a wear evaluation module, an arc evaluation module, a slide temperature evaluation module, a slide aging degree evaluation module and a comprehensive evaluation module;
the contact pressure evaluation module is connected with the contact pressure detection device, the friction factor evaluation module is connected with the friction factor calculation module, the wear evaluation module is connected with the image acquisition device, the arc evaluation module is respectively connected with the current acquisition device and the arc detection device, the skateboard temperature evaluation module is connected with the infrared imaging device, and the skateboard aging degree evaluation module is connected with the skateboard aging degree detection device;
the comprehensive evaluation module is respectively connected with the contact pressure evaluation module, the friction factor evaluation module, the wear evaluation module, the arc evaluation module, the sliding plate temperature evaluation module and the sliding plate aging degree evaluation module;
the contact pressure evaluation module is used for obtaining a contact pressure evaluation coefficient, the friction factor evaluation module is used for obtaining a friction factor evaluation coefficient, the wear evaluation module is used for obtaining a weight wear evaluation coefficient, the arc evaluation module is used for obtaining a contact evaluation coefficient, the slide temperature evaluation module is used for obtaining a base body temperature evaluation coefficient, the slide aging degree evaluation module is used for obtaining an aging degree evaluation coefficient, and the comprehensive evaluation module is used for obtaining an operating state coefficient of the pantograph slide.
3. A pantograph operating state evaluation method based on a pantograph operating state evaluation system according to any one of claims 1-2, comprising the steps of:
s1, collecting parameters of the pantograph slide plate and the contact wire through a parameter detection system;
and S2, inputting the parameters of the pantograph slide plate and the contact wire into a parameter evaluation system to obtain the operating state coefficient of the pantograph slide plate, and finishing the evaluation of the operating state of the pantograph slide plate.
4. The pantograph operating state evaluation method according to claim 3, wherein in S1, the parameters of the pantograph slide plate and the contact wire include a contact pressure between the pantograph slide plate and the contact wire, a friction force between the pantograph slide plate and the contact wire, a friction factor between the pantograph slide plate and the contact wire, an amount of wear of the pantograph slide plate, a thickness of wear of the pantograph slide plate, a pantograph contact failure rate, an arcing rate, a total arcing rate, a pantograph slide temperature, and an ultrasonic propagation speed in the pantograph slide plate.
5. The pantograph slide plate operating state evaluation method according to claim 4, wherein the method of determining the contact pressure between the pantograph slide plate and the contact line is specifically:
measuring the pressure of four positions set by the pantograph through contact pressure detection equipment, and calculating the contact pressure between the pantograph sliding plate and the contact line according to the pressure of the four positions; wherein the contact pressure between the pantograph slide plate and the contact line is calculated
Figure 374966DEST_PATH_IMAGE001
The expression (c) is specifically:
Figure 760948DEST_PATH_IMAGE002
in the formula (I), the compound is shown in the specification,
Figure 491750DEST_PATH_IMAGE003
the pressures at the four positions are respectively the pressures at the four positions,
Figure 621380DEST_PATH_IMAGE004
is a first coefficient of the first,
Figure 904594DEST_PATH_IMAGE005
is a second coefficient of the first coefficient,
Figure 195898DEST_PATH_IMAGE006
is a third coefficient which is a function of the third coefficient,
Figure 181040DEST_PATH_IMAGE007
is the fourth coefficient;
the method for determining the friction force between the pantograph slide plate and the contact line specifically comprises the following steps:
the force acting on the pantograph slide plate in the horizontal direction is detected by a tangential force detection device, and the frictional force between the contact wire and the pantograph slide plate is calculated by the following formulaf(ii) a Wherein the force acting in the horizontal direction of the pantograph pan comprises a horizontal component of aerodynamic force and a frictional force between the contact line and the pantograph pan;
Figure 848782DEST_PATH_IMAGE008
in the formula (I), the compound is shown in the specification,
Figure 986502DEST_PATH_IMAGE009
the power is the air power,
Figure 448708DEST_PATH_IMAGE010
is a horizontal component of the aerodynamic force,
Figure 422611DEST_PATH_IMAGE011
in order to speed the locomotive on which the pantograph is mounted,kis a constant coefficient independent of the working height of the bow of the pantograph,
Figure 628464DEST_PATH_IMAGE012
is a constant factor regardless of the operating position of the pantograph,
Figure 620691DEST_PATH_IMAGE013
the force which is applied to the pantograph slide plate in the horizontal direction and is opposite to the movement direction;
the method for determining the friction factor between the pantograph slide plate and the contact line specifically comprises the following steps:
calculating the friction factor according to the following formula by a friction factor calculation moduleu；
Figure 519377DEST_PATH_IMAGE014
。
6. Method for assessing the operational state of a pantograph pan according to claim 5, wherein the method for determining the amount of wear of the pantograph pan and the thickness of wear of the pantograph pan comprises the sub-steps of:
SA1, collecting the surface image of the pantograph slide plate through an image collecting device;
SA2, filtering the surface image of the pantograph slide plate by a median filtering method to obtain a filtered image;
SA3, performing convolution integral on the filtered image, and calculating the abrasion loss of the pantograph slide plate according to the following formula;
Figure 479112DEST_PATH_IMAGE015
in the formula (I), the compound is shown in the specification,
Figure 993415DEST_PATH_IMAGE016
in order to be a function of the loss,
Figure 575706DEST_PATH_IMAGE017
is a state class
Figure 766516DEST_PATH_IMAGE018
Is/are as follows
Figure 230906DEST_PATH_IMAGE019
The loss of the carbon dioxide gas is reduced,
Figure 26823DEST_PATH_IMAGE020
is a state class
Figure 780016DEST_PATH_IMAGE021
A predicted probability of (d);
Figure 395805DEST_PATH_IMAGE022
is a state class
Figure 876333DEST_PATH_IMAGE023
Is a valid value of
Figure 526758DEST_PATH_IMAGE024
A value other than 0;
Figure 450851DEST_PATH_IMAGE025
in order to be a function of the regression loss,
Figure 819516DEST_PATH_IMAGE026
in order to predict the position of the mobile terminal,
Figure 651206DEST_PATH_IMAGE027
is a real area;
SA4, calculating the gradient amplitude and direction of the image after filtering processing through a gradient operator, and comparing the edge image of the pantograph slide plate with the edge image of the initial pantograph slide plate to obtain the abrasion thickness of the slide plate;
the method for determining the contact failure rate of the pantograph specifically comprises the following steps:
collecting the current transmitted between the pantograph slide plate and the contact wire through a current collecting device, and calculating the contact failure rate of the pantograph through the following formulaCQ；
Figure 906869DEST_PATH_IMAGE028
In the formula (II)
Figure 1864DEST_PATH_IMAGE029
For the duration of the contact failure,
Figure 592245DEST_PATH_IMAGE030
the time for measuring the current to exceed the nominal 30% of the measurement.
7. The pantograph pan operating state evaluation method of claim 6, wherein the method of determining the arc rate and the total arc rate is specifically:
detecting the arc occurrence time and duration by an arc detection device, and calculating the arc burning rate by the following formulaNQ(ii) a And then the total arcing rate is calculated by matching with the visible light arcing duration collected by the image collecting equipmentAQ；
Figure 165309DEST_PATH_IMAGE031
In the formula (I), the compound is shown in the specification,
Figure 39593DEST_PATH_IMAGE032
for an arcing duration of more than 5ms,
Figure 305489DEST_PATH_IMAGE033
to measure the time that the current exceeds the nominal 30%,
Figure 383166DEST_PATH_IMAGE034
the visible light arcing duration;
the pantograph slide plate temperature comprises a pantograph slide plate base body temperature and a contact area temperature, and the method for determining the pantograph slide plate temperature specifically comprises the following steps:
collecting the substrate temperature and the contact area temperature of the pantograph sliding plate through infrared imaging equipment;
determining ultrasonic propagation velocity within the pantograph pan
Figure 759921DEST_PATH_IMAGE035
The expression (c) is specifically:
Figure 987247DEST_PATH_IMAGE036
in the formula (I), the compound is shown in the specification,Hthe thickness of the pantograph sliding plate is set as the thickness,tthe propagation time of the ultrasonic wave in the slide plate is shown.
8. The pantograph slide plate operating state evaluation method according to claim 7, wherein the step S2 is specifically:
and inputting parameters of the pantograph slide plate and the contact line into a parameter evaluation system to obtain a contact pressure evaluation coefficient, a friction factor evaluation coefficient, a weight wear evaluation coefficient, a height wear evaluation coefficient, a contact evaluation coefficient, an arcing evaluation coefficient, a substrate temperature evaluation coefficient, a contact area temperature evaluation coefficient and an aging degree evaluation coefficient, further calculating to obtain a pantograph slide plate running state coefficient, and finishing the pantograph slide plate running state evaluation.
9. Method for assessing the operating state of a pantograph slide according to claim 8, wherein said contact pressure assessment factor is obtained
Figure 424044DEST_PATH_IMAGE037
The method comprises the following steps:
comparing the contact pressure between the pantograph slide plate and the contact line with the contact pressure specified range of the set contact pressure performance value table and the contact pressure value range table;
when the contact pressure between the pantograph slide plate and the contact line exceeds the contact pressure specified range of the contact pressure performance value table and is in the contact pressure specified range of the contact pressure value range table, the contact pressure evaluation coefficient
Figure 989018DEST_PATH_IMAGE037
Is 0.4;
when the contact pressure between the pantograph slide plate and the contact line exceeds the contact pressure specified range of the contact pressure value range table, the contact pressure evaluation coefficient
Figure 169463DEST_PATH_IMAGE037
Is 1;
obtaining the evaluation coefficient of the friction factor
Figure 565810DEST_PATH_IMAGE038
The method comprises the following steps:
judging whether the difference value between the friction factor between the pantograph slide plate and the contact line and the friction factor of the set friction factor table exceeds 25% of the friction factor of the set friction factor table;
if yes, the coefficient of friction factor evaluation
Figure 422776DEST_PATH_IMAGE038
Is 1; if not, the friction factor evaluation coefficient
Figure 209467DEST_PATH_IMAGE038
Is 0;
obtaining the weight wear evaluation coefficient
Figure 193603DEST_PATH_IMAGE039
The method comprises the following steps:
judging whether the abrasion loss of the pantograph slide plate is less than a weight abrasion threshold value in a set weight abrasion ratio table;
if so, the weight wear coefficient
Figure 382139DEST_PATH_IMAGE039
Is 0; if not, the weight abrasion evaluation coefficient
Figure 911471DEST_PATH_IMAGE039
Is 1;
obtaining the high abrasion evaluation coefficient
Figure 185458DEST_PATH_IMAGE040
The method comprises the following steps:
judging whether the wear thickness of the pantograph slide plate is smaller than a high wear threshold value in a set high wear ratio table;
if so, the high wear assessment factor
Figure 707706DEST_PATH_IMAGE040
Is 0; if not, the high abrasion evaluation coefficient
Figure 16328DEST_PATH_IMAGE040
Is 1;
obtaining the contact evaluation coefficient
Figure 762567DEST_PATH_IMAGE041
The method comprises the following steps:
judging whether the contact failure rate of the pantograph is smaller than a contact failure rate threshold value in a set arc performance value table; if so, the contact evaluation coefficient
Figure 38696DEST_PATH_IMAGE041
Is 0; if not, the contact evaluation coefficient
Figure 99056DEST_PATH_IMAGE041
Is 1;
obtaining the arcing evaluation coefficient
Figure 262184DEST_PATH_IMAGE042
The method comprises the following steps:
judging whether the arc burning rate and the total arc burning rate are both smaller than an arc burning rate threshold value and a total arc burning rate threshold value in the set arc performance value table;
if yes, the arcing evaluation coefficient
Figure 382587DEST_PATH_IMAGE042
Is 0; if not, the arcing evaluation coefficient
Figure 378969DEST_PATH_IMAGE042
Is 1;
obtaining the evaluation coefficient of the substrate temperature
Figure 243019DEST_PATH_IMAGE043
The method comprises the following steps:
judging whether the temperature of the pantograph sliding plate base body is smaller than a sliding plate base body temperature threshold value or not;
if yes, the base temperature evaluation coefficient
Figure 526233DEST_PATH_IMAGE043
Is 0; if not, the evaluation coefficient of the substrate temperature
Figure 614275DEST_PATH_IMAGE043
Is 1;
obtaining the temperature evaluation coefficient of the contact area
Figure 350150DEST_PATH_IMAGE044
The method comprises the following steps:
judging whether the temperature of the contact area is smaller than a contact area temperature threshold value or not;
if yes, the temperature evaluation coefficient of the contact area
Figure 267159DEST_PATH_IMAGE044
Is 0; if not, the temperature evaluation coefficient of the contact area
Figure 404879DEST_PATH_IMAGE044
Is 1;
obtaining the aging degree evaluation coefficient
Figure 867085DEST_PATH_IMAGE045
The method is concretely：
Comparing the ultrasonic propagation speed in the pantograph slide plate with the ultrasonic sound velocity in the set slide plate aging degree table to obtain a corresponding judgment result;
when the determination result is non-aged, the aging degree evaluation coefficient
Figure 90256DEST_PATH_IMAGE045
Is 0;
when the determination result is light, the aging degree evaluation coefficient
Figure 46841DEST_PATH_IMAGE045
Is 0.3;
when the determination result is more serious, the aging degree evaluation coefficient
Figure 39068DEST_PATH_IMAGE045
Is 0.6;
when the determination result is serious, the aging degree evaluation coefficient
Figure 672175DEST_PATH_IMAGE045
Is 1.
10. The pantograph slide operating state evaluation method of claim 9, wherein in step S2, the pantograph slide operating state coefficient is calculatedKThe expression (c) is specifically:
Figure 382642DEST_PATH_IMAGE046
in the formula (I), the compound is shown in the specification,
Figure 188924DEST_PATH_IMAGE047
is a first scale factor and is a ratio of,
Figure 284925DEST_PATH_IMAGE048
is a second scaling factor to be used for the second scaling factor,
Figure 354512DEST_PATH_IMAGE049
is a third scaling factor and is a function of the third scaling factor,
Figure 286696DEST_PATH_IMAGE050
is a fourth scaling factor and is a function of the fourth scaling factor,
Figure 834352DEST_PATH_IMAGE051
is a fifth scaling factor that is a function of,
Figure 283394DEST_PATH_IMAGE052
is a sixth scaling factor and is a function of,
Figure 523883DEST_PATH_IMAGE053
is the seventh scaling factor and is the third scaling factor,
Figure 943363DEST_PATH_IMAGE054
is the eighth scaling factor and is the fourth scaling factor,
Figure 91447DEST_PATH_IMAGE055
is the ninth scale factor.
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