CN113465804A - Plum-blossom-shaped contact finger clamping force detection method and device - Google Patents
Plum-blossom-shaped contact finger clamping force detection method and device Download PDFInfo
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- CN113465804A CN113465804A CN202110706055.4A CN202110706055A CN113465804A CN 113465804 A CN113465804 A CN 113465804A CN 202110706055 A CN202110706055 A CN 202110706055A CN 113465804 A CN113465804 A CN 113465804A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0057—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to spring-shaped elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T13/00—Animation
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Abstract
The invention relates to a technical scheme of a plum-blossom contact finger clamping force detection method and a device, comprising the following steps: collecting pictures of the plum-blossom-shaped contact fingers, and determining the type of the plum-blossom-shaped contact fingers according to the pictures; downloading corresponding detection data from a remote server according to the type of the plum blossom contact finger; demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the progress of the demonstration animation according to the clamping force acquisition signal; and calculating the plum blossom contact finger clamping force according to the acquired signals, and displaying and storing a detection result of the plum blossom contact finger clamping force to a remote server through an interactive interface. The invention has the beneficial effects that: the detection threshold is reduced and the detection precision is improved.
Description
Technical Field
The invention relates to the field of power equipment detection, in particular to a method and a device for detecting a clamping force of a plum-blossom contact finger.
Background
In an electric power system, a plum blossom contact finger is one of key parts of high-voltage switch equipment, and the size of the clamping force of the plum blossom contact finger is related to the working stability of the high-voltage switch equipment; the plum blossom contact fingers are exposed to the atmospheric environment for a long time and frequently work, so that the plum blossom contact fingers are easily affected by the erosion of the external environment, the clamping force of a spring on the plum blossom contact fingers is very easy to reduce or lose efficacy, the gap between the spring and the plum blossom contact is enlarged or the spring is broken, and serious faults such as enlarged contact resistance, heating and the like are caused; therefore, it is especially important to detect and change the clamping force of the spring on the plum blossom contact finger in time, and the occurrence of accidents can be effectively prevented.
The prior art detects the detection of plum blossom contact finger through the clamp force detector, and this needs measurement personnel to have higher professional quality to the plum blossom contact finger of different models, how to adopt corresponding detection work piece and how to implement the detection procedure also is the accurate ring of assurance detection plum blossom contact finger clamp force, consequently urgently needs one kind and can make ordinary staff use, and has the technical scheme of higher detection precision to solve prior art problem.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a method and a device for detecting the clamping force of a plum-blossom-shaped contact finger, so that the detection threshold is reduced, and the detection precision is improved.
The technical scheme of the invention comprises a plum blossom contact finger clamping force detection method, which is characterized by comprising the following steps: s100, collecting pictures of the plum-blossom-shaped contact fingers, and determining the types of the plum-blossom-shaped contact fingers according to the pictures; s200, downloading corresponding detection data from a remote server according to the type of the plum blossom contact finger; s300, demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the progress of the demonstration animation according to the clamping force acquisition signal; and S400, calculating the clamping force of the plum-blossom-shaped contact fingers according to the acquired signals, and displaying and storing the detection result of the plum-blossom-shaped contact finger clamping force to a remote server through an interactive interface.
According to the plum blossom contact finger clamping force detection method, S100 further comprises: and initializing the equipment, and executing zero calibration processing each time when the clamping force test is executed, wherein the zero calibration comprises zero calibration of the acquisition signals and the display data, and initialization of acquisition configuration of the acquisition equipment.
According to the plum blossom contact finger clamping force detection method, S100 further comprises: and verifying the spring tension for the clamping force test, wherein the spring tension passes through the spring tension test or is stored in the spring tension data of the remote server.
According to the plum blossom contact finger clamping force detection method, S100 comprises the following steps: s110, acquiring a vertical shot picture of the plum-blossom-shaped contact finger through a camera device; and S120, analyzing the shape characteristics of the vertically shot picture, matching the shape characteristics with the shapes of the models of the different regular quincuncial contact fingers through zooming and selection, and determining the model of the detected quincuncial contact finger, wherein the shape characteristics are obtained through boundary characteristic processing.
According to the plum blossom contact finger clamping force detection method, the method comprises the following steps: s210, setting the number of the detected equipment, the number of the detected test point and the number of the transformer substation to which the test point belongs according to the type of the plum blossom contact finger; and S220, issuing detection data of the type of the plum blossom contact finger through a remote server, wherein the detection data comprises detection animation data and plum blossom contact finger parameter data.
According to the plum blossom contact finger clamping force detection method, S210 further includes: the detection method comprises the steps that a quincuncial contact finger detection flow and detection items are set in a user-defined mode, the remote server generates detection animation data according to the detection flow and the detection items, animation segments of a plurality of different detection flows and detection items pre-stored in the server are automatically generated according to the detection animation data, and the detection flow corresponding to the detection animation data is based on a quincuncial contact finger clamping force detection criterion.
According to the plum blossom contact finger clamping force detection method, S300 comprises the following steps: s310, playing the detected animation data through an interactive interface; s320, acquiring the acquired signal, automatically playing the detection animation data or performing error prompt according to the acquired signal, wherein the detection animation data is automatically played, the acquired signal type is consistent with the detection process and the detection item, the error prompt is that the acquired signal type is inconsistent with the detection process and the detection item, and the animation of the current process is automatically and repeatedly played after the error prompt is performed; s330, the step S320 is circulated until the detection process and the detection items are processed.
According to the plum-blossom-shaped contact finger clamping force detection method, the detection method corresponding to the detection animation data at least comprises the following procedures: inserting the test probe into the extensible tool, and screwing and fixing the flat pad, the extended detection ring and the test probe for detection; the expansion detection ring is lightly inserted into a plum blossom contact fixed on the contact arm; rotating the test probe clockwise to a stop position of the expansion test tool to expand the expansion test tool; starting the test, and transmitting test data detected by the test probe to the test host through wireless transmission to finish one-time measurement; stopping testing, and rotating the test probe anticlockwise to return the extensible tool; the extensible tool is pulled out of the plum blossom contact by slightly pulling the test probe handle, and the contact position of the extensible tool and the plum blossom contact is adjusted by rotating the extensible tool clockwise by a corresponding angle.
According to the plum blossom contact finger clamping force detection method, wherein S400 comprises: s410, determining the tension of the spring for testing according to the spring parameter and the tulip contact parameter of the detection data; s420, by the formula F ═ 2n3πk(πD-l0)/(n1n2) Calculating the pressure of the single-sheet contact finger, F is the pressure of the single-sheet contact finger, n3Is the number of springs, k is the spring coefficient, D is the diameter of the circle to which the springs are bound, l0Initial length of spring, n1Is the number of contact fingers, n2The number of the quincunx contact fingers in each group; and S430, determining the pressure of each cambered surface of the plum-blossom-shaped contact finger according to the pressure of the single contact finger.
According to the method for detecting the clamping force of the plum-blossom-shaped contact fingers, the calculation method of the pressure of each cambered surface comprises the following steps: if the number of contact finger groups of the arc-surface contact is singular, Ft ═ F [ ((sin (pi/6 + pi/n 1/2) + sin (pi/6 + pi/n 1/2+ pi/n 1) + … + sin (pi/6 + pi/n 1/2+ (A-1) pi/n 1)) ] ═ 2+ 1; if the number of contact finger groups of the arc-surface contact is a double number, the number is Ft-F (sin (pi/6 + pi/n 1/2) + sin (pi/6 + pi/n 1/2+ pi/n 1) + … + sin (pi/6 + pi/n 1/2+ (A-1) pi/n 1)))) 2; f is the single-chip contact finger pressure, A is n/6, A is an integer, and n is the number of contact finger groups.
The method for detecting the clamping force of the quincunx contact fingers further comprises the step of setting corresponding threshold values for the contact finger pressure, wherein the threshold values of the contact finger pressure are calculated through Fc-n ζ H π a ^2, Fc is the contact finger pressure, H is the material hardness, a is the contact spot radius, and ζ material coefficient.
According to the plum blossom contact finger clamping force detection method, the method further comprises the following steps: the contact resistance of the plum-blossom-shaped contact finger and the conductor temperature rise are determined, wherein the contact resistance is calculated through RC being 0.89 rho (Zeta H/nFc) ^ (1/2), the conductor temperature rise is calculated through Tk being (IR) ^2/(8 being 2.4 being 10 being (-8) being T0), the abrasion, the aging and the deformation of the spring of the plum-blossom-shaped contact finger are further determined, and the detection result of the plum-blossom-shaped contact finger is displayed through an interactive interface.
The technical scheme of the invention also comprises a plum blossom contact finger clamping force detection device for realizing any method, the device comprises a plum blossom contact finger clamping force test device, detection equipment and a remote server, the plum blossom contact finger clamping force test device and the detection equipment are in wireless communication in the same network, and the detection equipment is in remote wireless communication with the remote server; the quincuncial contact finger clamping force testing device is provided with a camera device; the plum-blossom-shaped contact finger clamping force testing device collects pictures of the plum-blossom-shaped contact fingers through the camera device and determines the models of the plum-blossom-shaped contact fingers according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the type of the plum blossom contact finger; the detection equipment demonstrates demonstration animations in the detection data through an interactive interface, and dynamically adjusts the demonstration animation process according to a clamping force acquisition signal of the plum-blossom-shaped contact finger clamping force testing device; the detection equipment calculates the plum blossom contact finger clamping force according to the collected signals, determines the state of the plum blossom contact finger according to the plum blossom contact finger clamping force, and displays and stores the detection result of the plum blossom contact finger clamping force to the remote server through an interactive interface.
The plum blossom contact finger clamping force detection method is characterized in that the plum blossom contact finger clamping force test device comprises an elastic expansion detection ring, and the elastic expansion detection ring is formed by closely splicing at least 4 fan-shaped expansion units in an annular mode.
The invention has the beneficial effects that: the detection threshold is reduced and the detection precision is improved.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 shows a general flow diagram according to an embodiment of the invention.
Fig. 2 is a block diagram illustrating connection of devices according to an embodiment of the present invention.
Fig. 3 is an initialization flowchart according to an embodiment of the present invention.
Fig. 4 is a flow chart illustrating a detection setup according to an embodiment of the present invention.
Fig. 5 shows an interaction detection flow according to an embodiment of the invention.
Fig. 6 is a flowchart illustrating a quincunx finger analysis according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a device for testing the clamping force of a quincunx contact finger according to an embodiment of the invention;
FIG. 8 is an exploded view of the detection head shown in FIG. 7;
fig. 9 is a top view of a test head of the quincunx contact finger clamping force test device according to an embodiment of the present invention.
The detection block 100, the detection surface 110, the conduction surface 120, the arc-shaped groove 130 and the concave part 140; an elastic connection member 200.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, etc. should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
FIG. 1 shows a general flow diagram according to an embodiment of the invention. The process comprises the following steps: s100, collecting pictures of the plum-blossom-shaped contact fingers, and determining the types of the plum-blossom-shaped contact fingers according to the pictures; s200, downloading corresponding detection data from a remote server according to the type of the quincunx contact finger; s300, demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the progress of the demonstration animation according to the clamping force acquisition signal; and S400, calculating the clamping force of the plum-blossom-shaped contact fingers according to the acquired signals, and displaying and storing the detection result of the plum-blossom-shaped contact finger clamping force to a remote server through an interactive interface.
FIG. 2 is a block diagram of a system according to an embodiment of the present invention. The device comprises a plum-blossom-shaped contact finger clamping force testing device, detection equipment and a remote server, wherein the plum-blossom-shaped contact finger clamping force testing device and the detection equipment are in wireless communication in the same network, and the detection equipment is in remote wireless communication with the remote server; the quincuncial contact finger clamping force testing device is provided with a camera device; the plum blossom contact finger clamping force testing device acquires pictures of the plum blossom contact fingers through a camera device (not shown), and determines the type of the plum blossom contact fingers according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the type of the quincunx contact finger; the detection equipment demonstrates demonstration animations in the detection data through an interactive interface, and dynamically adjusts the progress of the demonstration animations according to the clamping force acquisition signals of the plum-blossom-shaped contact finger clamping force testing device; the detection equipment calculates the plum blossom contact finger clamping force according to the collected signals, determines the state of the plum blossom contact finger according to the plum blossom contact finger clamping force, and displays and stores the detection result of the plum blossom contact finger clamping force to a remote server through an interactive interface.
Fig. 3 is an initialization flowchart according to an embodiment of the present invention. It includes: starting the detection equipment and the clamping force testing device; performing initialization of equipment, performing zero calibration processing on the detected equipment each time when a clamping force test is performed, wherein the zero calibration comprises zero calibration of acquired signals and display data, and initialization of acquisition configuration of the acquisition equipment; checking the spring tension of the clamping force testing device
And initializing the equipment, and executing zero calibration processing each time when the clamping force test is executed, wherein the zero calibration comprises zero calibration of the acquisition signals and the display data, and initialization of acquisition configuration of the acquisition equipment.
The present embodiment also provides an example of a spring tension detection,
the diameter of a fixed contact of a plum-blossom-shaped contact is 49, the number m of contact fingers is 30, the rated current is 1250A, the maximum outer diameter of the contact is 86mm, the middle diameter D2 of a spring is 4.9mm, the outer diameter D1 of the spring is 6mm, the diameter D of a spring wire is 1.1mm, the total number of turns of the spring is 175, and the initial length L0 of the spring is 192 (the length of a hook is not calculated).
According to the conditions, the encircling ratio C of the spring wire is D2/D is 4.45;
the spring was used as the actual data bit for the tensile test with a standard weight as shown in table 1 below:
| weight of the weight | Spring length (not counting hook length) |
| 1.008KG | 197mm |
| 1.008g+0.886KG | 208.5mm |
| 1.008*2kg+0.886KG | 222.5mm |
TABLE 1
According to F-KX, k is 1.008/(222.5-208.5MM) -0.072 KG/MM-0.7056N/MM
The stiffness coefficient of the spring is calculated according to the formula as follows:
G＝8*k*C^3n/d＝8*4.45^3*174*0.072/1.1＝8028Kg/mm2
the initial tension of the spring is as follows: f0-3.91-0.072 (222.5-192) -0.706 kg;
according to the spring coefficient, the tension of the spring is as follows:
Fk＝K*(Π*(R-D1)-L0)+F0＝0.072*(3.14*80-202)+0.706＝4.2484KG＝41.6N。
fig. 4 shows a flow diagram of a detection setup according to an embodiment of the invention. The process comprises the following steps: s210, setting the number of the detected equipment, the number of the detected test point and the number of the transformer substation to which the test point belongs according to the type of the plum blossom contact finger; and S220, issuing detection data of the type of the plum blossom contact finger through a remote server, wherein the detection data comprises detection animation data and plum blossom contact finger parameter data. S210 of the present embodiment further includes: the detection method comprises the steps that a quincuncial contact finger detection flow and detection items are set in a user-defined mode, detection animation data are generated through a remote server according to the detection flow and the detection items, the detection animation data are automatically generated through animation segments of a plurality of different detection flows and detection items pre-stored in the server, and the detection flow corresponding to the detection animation data is based on a quincuncial contact finger clamping force detection criterion.
Fig. 5 shows an interaction detection flow according to an embodiment of the invention. The process comprises the following steps: s310, playing the detected animation data through an interactive interface; s320, acquiring the acquired signals, automatically playing detection animation data or performing error prompt according to the acquired signals, wherein the type of the acquired signals is consistent with the detection process and the detection items when the detection animation data is automatically played, and the type of the acquired signals is inconsistent with the detection process and the detection items when the error prompt is performed, and automatically and repeatedly playing the animation of the current process after the error prompt is performed; s330, looping S320 until the detection process and the detection items are processed.
The corresponding flow of the animation display detection is as follows: inserting the test probe into the extensible tool, and screwing and fixing the flat pad, the extended detection ring and the test probe for detection; the expansion detection ring is lightly inserted into a plum blossom contact fixed on the contact arm; rotating the test probe clockwise to a stop position of the expansion test tool to expand the expansion test tool; starting the test, and transmitting test data detected by the test probe to the test host through wireless transmission to finish one-time measurement; stopping testing, and rotating the test probe anticlockwise to return the extensible tool; the extensible tool is pulled out of the plum blossom contact by slightly pulling the test probe handle, and the contact position of the extensible tool and the plum blossom contact is adjusted by rotating the extensible tool clockwise by a corresponding angle.
Fig. 6 is a flowchart illustrating a quincunx finger analysis according to an embodiment of the present invention. The method comprises the following steps:
s410, determining the tension of the spring for testing according to the spring parameters and the plum blossom contact parameters of the detection data;
s420, by the formula F ═ 2n3πk(πD-l0)/(n1n2) Calculating the pressure of the single-sheet contact finger, F is the pressure of the single-sheet contact finger, n3Is the number of springs, k is the spring coefficient, D is the diameter of the circle to which the springs are bound, l0Initial length of spring, n1Is the number of contact fingers, n2The number of the quincunx contact fingers in each group;
and S430, determining the pressure of each cambered surface of the plum-blossom-shaped contact finger according to the pressure of the single contact finger.
The technical scheme of the implementation also comprises:
the calculation method of the pressure of each cambered surface comprises the following steps:
if the number of contact finger groups of the arc-surface contact is singular, Ft ═ F [ ((sin (pi/6 + pi/n 1/2) + sin (pi/6 + pi/n 1/2+ pi/n 1) + … + sin (pi/6 + pi/n 1/2+ (A-1) pi/n 1)) ] ═ 2+ 1;
if the number of contact finger groups of the arc-surface contact is a double number, the number is Ft-F (sin (pi/6 + pi/n 1/2) + sin (pi/6 + pi/n 1/2+ pi/n 1) + … + sin (pi/6 + pi/n 1/2+ (A-1) pi/n 1)))) 2; f is the single-chip contact finger pressure, A is n/6, A is an integer, and n is the number of contact finger groups.
And setting a corresponding threshold value for the contact finger pressure, wherein the threshold value of the contact finger pressure is calculated by Fc ═ n ζ H π a ^2, Fc is the contact finger pressure, H is the material hardness, a is the contact spot radius, and ζ material coefficient.
The contact resistance of the plum-blossom-shaped contact finger and the conductor temperature rise are determined, wherein the contact resistance is calculated through RC being 0.89 rho (Zeta H/nFc) ^ (1/2), the conductor temperature rise is calculated through Tk being (IR) ^2/(8 being 2.4 being 10 being (-8) being T0), the abrasion, the aging and the deformation of the spring of the plum-blossom-shaped contact finger are further determined, and the detection result of the plum-blossom-shaped contact finger is displayed through an interactive interface.
Referring to fig. 7 to 9, a detection head according to an embodiment of a first aspect of the present invention is configured to detect a tulip contact finger, the detection head being configured to be a column, and a through hole for connecting a detection gun being centrally provided, the detection head including:
the independent detection piece 100 of a plurality of, can constitute the columnar detection head after splicing all detection pieces 100, be used for detecting the plum blossom feeler, every outer wall that detects piece 100 sets up to detecting face 110, be used for the butt on the inner wall of plum blossom feeler, every inner wall that detects piece 100 sets up to conducting face 120, this face contacts with the rifle head that detects the rifle, be used for transmitting the reaction force that detects face 110 and receive to the rifle head that detects the rifle, the upper end of detecting the outer wall of piece 100 still is provided with arc recess 130, all detection pieces 100 splice back together, all arc recess 130 make up into a complete circular slot, the circular slot distributes along the periphery wall of columnar detection head, the axial vertical of circular slot and columnar detection head, install elastic connecting piece 200 in the circular slot, splice all detection pieces 100 together through this elastic connecting piece 200.
The detection principle of the detection head is as follows: the detection blocks 100 are spliced together through the elastic connecting piece 200 to form a columnar detection head, a through hole is formed in the center of the detection head, the detection head is pressed into the center of the plum blossom-shaped contact finger, the detection surface 110 of each detection block 100 is abutted against the inner wall of the plum blossom-shaped contact finger, the gun head of the detection gun is inserted into the through hole, and each detection block 100 tends to move outwards, an acting force is generated on the inner wall of the plum blossom-shaped contact finger, and a reverse acting force is formed on the detection surface 110 under the action of the spring of the plum blossom-shaped contact finger, the reverse acting force is transmitted to the conduction surface 120 through the detection surface 110, then transmitted to the gun head of the detection gun through the conduction surface 120, finally transmitted to the terminal by the detection gun for analysis, the size of the elastic force fed back by the spring of the plum blossom contact finger is judged, and whether the spring of the plum blossom contact finger is normal or not and whether the force transmitted by each plum blossom contact is uniform or not is judged by combining the feedback result of each detection surface 110.
It should be noted that the outer wall of the detection head 100 refers to the side away from the through hole, and the inner wall refers to the side where the through hole is formed.
According to the embodiment of the first aspect of the invention, the detection head has at least the following beneficial effects: form the columnar detection head through elastic connection piece 200 with a plurality of detection pieces 100 piece together, and form the through-hole of connecting the detection rifle at the center, will detect the head and connect on detecting the rifle, insert the plum blossom and touch the center of indicating, the detection face 110 butt of a plurality of detection pieces 100 touches the inner wall of indicating and outwards extrudees at the plum blossom, its reaction force is conducted to conduction face 120 and is conducted to detecting the rifle on by detection face 110, it is normal whether to upload to the terminal elasticity of judging this plum blossom and touch the finger at last, the in-process need not to touch the spring of indicating with the plum blossom and pull down the test, touch the finger to the plum blossom and do not have the destruction, be applicable to extensive detection and selective examination, easy operation is convenient simultaneously, high detection efficiency.
According to some embodiments of the present invention, the number of the detecting blocks 100 is set to be even, the plum blossom contact fingers have a plurality of plum blossom contacts, the plurality of plum blossom contacts are generally distributed on the plum blossom contact fingers in a circumferential array, or divided into a plurality of groups of plum blossom-shaped contacts with the same number, the groups are distributed in a circumferential array, gaps are arranged among each group, the gap distance is larger than the gap between two tulip contacts, the number of the detection blocks 100 is set to be even, the area of the tulip contact contacted by the detection surface 110 of each detection block 100 can be kept consistent in the detection process, so that the plum blossom contact can be corroded and worn even if the spring of the plum blossom contact finger fails, under the condition of consistent detection contact area, the judgment is easily carried out according to the result, whether the spring fails or the tulip contact generates corrosion and abrasion to cause the change of the contact area, so that the conduction force is different.
In the present embodiment, the number of the detection blocks 100 is set to 4, as shown with reference to fig. 7 to 9.
According to some embodiments of the present invention, referring to fig. 8 or 9, the detecting block 100 is viewed from top to bottom as a fan shape, the detecting surface 110 is set as a curved surface, the detecting head composed of the detecting block 100 is cylindrical, and the curved detecting surface 110 can better contact with the tulip contact, so as to maintain the maximum contact area and improve the accuracy of the test result.
In some other embodiments, the detecting surface 110 may be a plane, and the detecting head may be a prism, which is suitable for the above-mentioned tulip contact fingers divided into several groups of tulip contacts.
According to some embodiments of the present invention, referring to fig. 8 or 9, the conducting surfaces 120 are provided with arc surfaces, and after the plurality of detection blocks 100 are assembled by the elastic connection members 200, the plurality of conducting surfaces 120 form through holes, so that the maximum area of conducting force can be conducted to the gun head of the detection gun, and the accuracy of the test can be improved.
In the above embodiment, the conducting surface 120 is further provided with a concave portion 140, one end of the arc surface is connected with one end of the concave portion 140, the concave portion 140 can be suitable for positioning of the detection gun, the head of the detection gun is provided with a positioning convex portion corresponding to the concave portion 140, the head of the detection gun is inserted into the through hole, and after the positioning convex portion is aligned with the concave portion 140, the detection gun is rotated, because the arc surface and the concave portion 140 are both arranged non-concentrically with the through hole, and the positioning convex portion rotates following the rotation of the head, the positioning convex portion can generate a force to the conducting surface 120, so that the detection block 100 is displaced outwards, the detection head can be more tightly clamped in the center of the quincunx contact finger, the detection surface 110 can be kept in tight contact with the quincunx contact, and the accuracy of the test result can be improved.
In the above embodiment, one end of the arc surface of each detection block 100 is connected to one end of its own concave portion 140, and the other end of the arc surface is connected to the other end of the concave portion 140 on the adjacent detection block 100.
A detection apparatus according to a second aspect of the present invention has the detection head as described above.
The detection blocks 100 are assembled together through the elastic connecting piece 200 to form a cylindrical detection head, a through hole for connecting a detection gun is formed in the center, the detection head is connected onto the detection gun and inserted into the center of the plum blossom contact finger, the detection surfaces 110 of the detection blocks 100 are abutted against the inner wall of the plum blossom contact finger and are extruded outwards, and the reaction force is transmitted to the conduction surface 120 through the detection surfaces 110.
Referring to fig. 7-9, in combination with the technical solutions of fig. 1-6, the embodiment of the invention implements custom editing of the detection flow of the quincunx contact finger, and implements improvement of the quincunx contact finger detection by combining the flow editing, animation demonstration and signal acquisition in remote service, so that the requirements are lower, the flow processing is standardized, and the detection precision is ensured
It should be recognized that the method steps in embodiments of the present invention may be embodied or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The method may use standard programming techniques. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Further, the operations of processes described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and/or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) collectively executed on one or more processors, by hardware, or combinations thereof. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable interface, including but not limited to a personal computer, mini computer, mainframe, workstation, networked or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and the like. Aspects of the invention may be embodied in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optically read and/or write storage medium, RAM, ROM, or the like, such that it may be read by a programmable computer, which when read by the storage medium or device, is operative to configure and operate the computer to perform the procedures described herein. Further, the machine-readable code, or portions thereof, may be transmitted over a wired or wireless network. The invention described herein includes these and other different types of non-transitory computer-readable storage media when such media include instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor. The invention also includes the computer itself when programmed according to the methods and techniques described herein.
A computer program can be applied to input data to perform the functions described herein to transform the input data to generate output data that is stored to non-volatile memory. The output information may also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including particular visual depictions of physical and tangible objects produced on a display.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (14)
1. A plum blossom contact finger clamping force detection method is characterized by comprising the following steps:
s100, collecting pictures of the plum-blossom-shaped contact fingers, and determining the types of the plum-blossom-shaped contact fingers according to the pictures;
s200, downloading corresponding detection data from a remote server according to the type of the plum blossom contact finger;
s300, demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the progress of the demonstration animation according to the clamping force acquisition signal;
and S400, calculating the clamping force of the plum-blossom-shaped contact fingers according to the acquired signals, and displaying and storing the detection result of the plum-blossom-shaped contact finger clamping force to a remote server through an interactive interface.
2. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 1, wherein the S100 further comprises:
and initializing the equipment, and executing zero calibration processing each time when the clamping force test is executed, wherein the zero calibration comprises zero calibration of the acquisition signals and the display data, and initialization of acquisition configuration of the acquisition equipment.
3. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 1, wherein the S100 further comprises:
and verifying the spring tension for the clamping force test, wherein the spring tension passes through the spring tension test or is stored in the spring tension data of the remote server.
4. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 1, wherein the S100 comprises:
s110, acquiring a vertical shot picture of the plum-blossom-shaped contact finger through a camera device;
and S120, analyzing the shape characteristics of the vertically shot picture, matching the shape characteristics with the shapes of the models of the different regular quincuncial contact fingers through zooming and selection, and determining the model of the detected quincuncial contact finger, wherein the shape characteristics are obtained through boundary characteristic processing.
5. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 4, wherein the S200 comprises:
s210, setting the number of the detected equipment, the number of the detected test point and the number of the transformer substation to which the test point belongs according to the type of the plum blossom contact finger;
and S220, issuing detection data of the type of the plum blossom contact finger through a remote server, wherein the detection data comprises detection animation data and plum blossom contact finger parameter data.
6. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 5, wherein the S210 further comprises:
the detection method comprises the steps that a quincuncial contact finger detection flow and detection items are set in a user-defined mode, the remote server generates detection animation data according to the detection flow and the detection items, animation segments of a plurality of different detection flows and detection items pre-stored in the server are automatically generated according to the detection animation data, and the detection flow corresponding to the detection animation data is based on a quincuncial contact finger clamping force detection criterion.
7. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 6, wherein the S300 comprises:
s310, playing the detected animation data through an interactive interface;
s320, acquiring the acquired signal, automatically playing the detection animation data or performing error prompt according to the acquired signal, wherein the detection animation data is automatically played, the acquired signal type is consistent with the detection process and the detection item, the error prompt is that the acquired signal type is inconsistent with the detection process and the detection item, and the animation of the current process is automatically and repeatedly played after the error prompt is performed;
s330, the step S320 is circulated until the detection process and the detection items are processed.
8. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 7, wherein the detection method corresponding to the detection animation data at least comprises the following procedures:
inserting the test probe into the extensible tool, and screwing and fixing the flat pad, the extended detection ring and the test probe for detection;
the expansion detection ring is lightly inserted into a plum blossom contact fixed on the contact arm;
rotating the test probe clockwise to a stop position of the expansion test tool to expand the expansion test tool;
starting the test, and transmitting test data detected by the test probe to the test host through wireless transmission to finish one-time measurement;
stopping testing, and rotating the test probe anticlockwise to return the extensible tool;
the extensible tool is pulled out of the plum blossom contact by slightly pulling the test probe handle, and the contact position of the extensible tool and the plum blossom contact is adjusted by rotating the extensible tool clockwise by a corresponding angle.
9. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 1, wherein the S400 comprises:
s410, determining the tension of the spring for testing according to the spring parameter and the tulip contact parameter of the detection data;
s420, by the formula F ═ 2n3πk(πD-l0)/(n1n2) Calculating the pressure of the single-sheet contact finger, F is the pressure of the single-sheet contact finger, n3Is the number of springs, k is the spring coefficient, D is the diameter of the circle to which the springs are bound, l0Initial length of spring, n1Is the number of contact fingers, n2The number of the quincunx contact fingers in each group;
and S430, determining the pressure of each cambered surface of the plum-blossom-shaped contact finger according to the pressure of the single contact finger.
10. The method for detecting the plum-blossom-shaped contact finger clamping force according to claim 9, wherein the calculation method of the pressure of each arc surface is as follows:
if the number of contact fingers contacted by the arc surface is singular, it is
Ft＝F*((sin(π/6+π/n1/2)+sin(π/6+π/n1/2+π/n1)+…+sin(π/6+π/n1/2+(A-1)π/n1)))*2+1；
If the number of contact finger groups contacted by the cambered surface is even, the number is
Ft＝F*((sin(π/6+π/n1/2)+sin(π/6+π/n1/2+π/n1)+…+sin(π/6+π/n1/2+(A-1)π/n1)))*2；
F is the single-chip contact finger pressure, A is n/6, A is an integer, and n is the number of contact finger groups.
11. The method for detecting the plum blossom-shaped contact finger clamping force as claimed in claim 10, wherein the method further comprises setting a corresponding threshold value for the contact finger pressure, the threshold value for the contact finger pressure is calculated by Fc ═ n ζ H pi a ^2, Fc is the contact finger pressure, H is the material hardness, a is the contact spot radius, and ζ material coefficient.
12. The method for detecting the plum-blossom-shaped contact finger clamping force as claimed in claim 11, wherein the method further comprises:
the contact resistance of the plum-blossom-shaped contact finger and the conductor temperature rise are determined, wherein the contact resistance is calculated through RC being 0.89 rho (Zeta H/nFc) ^ (1/2), the conductor temperature rise is calculated through Tk being (IR) ^2/(8 being 2.4 being 10 being (-8) being T0), the abrasion, the aging and the deformation of the spring of the plum-blossom-shaped contact finger are further determined, and the detection result of the plum-blossom-shaped contact finger is displayed through an interactive interface.
13. A plum blossom contact finger clamping force detection device for realizing the method of any one of claims 1 to 12, the device comprises a plum blossom contact finger clamping force test device, detection equipment and a remote server, the plum blossom contact finger clamping force test device and the detection equipment are in wireless communication in the same network, and the detection equipment is in remote wireless communication with the remote server; the quincuncial contact finger clamping force testing device is provided with a camera device; the plum-blossom-shaped contact finger clamping force testing device collects pictures of the plum-blossom-shaped contact fingers through the camera device and determines the models of the plum-blossom-shaped contact fingers according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the type of the plum blossom contact finger; the detection equipment demonstrates demonstration animations in the detection data through an interactive interface, and dynamically adjusts the demonstration animation process according to a clamping force acquisition signal of the plum-blossom-shaped contact finger clamping force testing device; the detection equipment calculates the plum blossom contact finger clamping force according to the collected signals, determines the state of the plum blossom contact finger according to the plum blossom contact finger clamping force, and displays and stores the detection result of the plum blossom contact finger clamping force to the remote server through an interactive interface.
14. The method for detecting the plum blossom-shaped contact finger clamping force according to claim 13, wherein the plum blossom-shaped contact finger clamping force testing device comprises an elastic expansion detection ring, and the elastic expansion detection ring is formed by closely splicing at least 4 fan-shaped expansion units in an annular manner.
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