CN113465804B - Quincuncial contact finger clamping force detection method and device - Google Patents
Quincuncial contact finger clamping force detection method and device Download PDFInfo
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- CN113465804B CN113465804B CN202110706055.4A CN202110706055A CN113465804B CN 113465804 B CN113465804 B CN 113465804B CN 202110706055 A CN202110706055 A CN 202110706055A CN 113465804 B CN113465804 B CN 113465804B
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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 method and a device for detecting clamping force of plum blossom touch fingers, which comprises the following steps: collecting pictures of plum blossom touch fingers, and determining the model of the plum blossom touch fingers according to the pictures; downloading corresponding detection data from a remote server according to the model of the plum blossom contact finger; demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the demonstration animation process according to the clamping force acquisition signal; and calculating the clamping force of the plum blossom touch finger according to the acquired signals, and displaying and storing the detection result of the clamping force of the plum blossom touch finger to a remote server through an interactive interface. The beneficial effects of the invention are as follows: the detection threshold is reduced and the detection accuracy is improved.
Description
Technical Field
The invention relates to the field of power equipment detection, in particular to a quincuncial contact finger clamping force detection method and device.
Background
In an electric power system, the quincuncial contact finger is one of key components of the high-voltage switch equipment, and the magnitude of the clamping force of the quincuncial contact finger is related to the working stability of the high-voltage switch equipment; because the quincuncial contact finger is exposed to the atmospheric environment for a long time to work frequently, the quincuncial contact finger is easily affected by the erosion of the external environment, the clamping force of the spring on the quincuncial contact finger is easily reduced or fails, the gap between the spring and the quincuncial contact is enlarged or the spring is broken, and serious faults such as enlarged contact resistance, heating and the like are caused; therefore, the detection and replacement of the clamping force of the spring on the plum blossom contact finger are particularly important in time, and accidents can be effectively prevented.
In the prior art, the plum blossom contact finger is detected through the clamping force detector, so that the detection personnel are required to have higher professional quality, and according to different types of plum blossom contact fingers, how to adopt corresponding detection workpieces and how to implement a detection flow is also a loop for ensuring the accuracy of the clamping force of the plum blossom contact finger, so that a technical scheme which can be used by common staff and has higher detection precision is urgently needed to solve the problems in the prior art.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a quincuncial contact finger clamping force detection method and device, which reduce a detection threshold and improve detection precision.
The technical scheme of the invention comprises a plum blossom touch finger clamping force detection method, which is characterized by comprising the following steps: s100, collecting pictures of plum blossom touch fingers, and determining the model of the plum blossom touch fingers according to the pictures; s200, downloading corresponding detection data from a remote server according to the model of the plum blossom contact finger; s300, demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the demonstration animation process according to the clamping force acquisition signal; s400, calculating the clamping force of the plum blossom touch finger according to the acquired signals, and displaying and storing the detection result of the clamping force of the plum blossom touch finger to a remote server through an interactive interface.
According to the quincuncial contact finger clamping force detection method, S100 further comprises: the device is initialized, and zero calibration processing is performed each time a clamping force test is performed, wherein the zero calibration includes zero calibration of the acquisition signal and the display data, and also initialization of the acquisition device acquisition configuration.
According to the quincuncial contact finger clamping force detection method, S100 further comprises: and verifying the spring tension for the clamping force test, wherein the spring tension passes a spring tension test or spring tension data stored in the remote server.
According to the quincuncial contact finger clamping force detection method, S100 comprises: s110, acquiring a vertical shot picture of the plum blossom contact finger through a camera device; s120, analyzing the shape characteristics of the vertically shot picture, matching the shape characteristics with the shapes of the models of different regular plum blossom contact fingers through scaling and selection, and determining the model of the detected plum blossom contact finger, wherein the shape characteristics are obtained through boundary characteristic processing.
According to the quincuncial contact finger clamping force detection method, wherein: s210, setting the detected equipment number, test point and the number of the transformer substation according to the model of the plum blossom contact finger; s220, transmitting detection data of the model of the plum blossom contact finger through a remote server, wherein the detection data comprise detection animation data and parameter data of the plum blossom contact finger.
The quincuncial contact finger clamping force detection method according to the present invention, wherein S210 further comprises: and the detection flow corresponding to the detection animation data is based on a quincuncial finger clamping force detection criterion.
According to the quincuncial contact finger clamping force detection method, S300 includes: s310, playing the detection animation data through an interactive interface; s320, acquiring the acquired signals, automatically playing the detection animation data or performing error prompt according to the acquired signals, wherein the automatic playing of the detection animation data is that the acquired signal types are consistent with the detection flow and the detection items, the error prompt is that the acquired signal types are inconsistent with the detection flow and the detection items, and automatically repeating playing the animation of the current flow after performing error prompt; s330, the step S320 is circulated until the detection flow and the detection items are processed.
According to the quincuncial contact finger clamping force detection method, the detection method for detecting the correspondence of the animation data at least comprises the following processes: inserting a test probe into the extensible tool, and screwing and fixing a flat pad, an extensible detection ring and a test probe for detection; slightly inserting the extended detection ring 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 the test data detected by the test probe to a test host computer to finish one-time measurement; stopping the test, rotating the test probe anticlockwise, and returning the extensible tool; and (3) pulling out the expandable fixture from the plum blossom contact by slightly pulling out the handle of the test probe, and adjusting the contact position of the expandable fixture and the plum blossom contact by rotating the expandable fixture clockwise by a corresponding angle.
According to the quincuncial contact finger clamping force detection method, S400 includes: s410, determining the tension of the spring for testing according to the spring parameter and the quincuncial contact parameter of the detection data; s420, by the formula f=2n 3 πk(πD-l 0 )/(n1n 2 ) Calculating the pressure of the single contact finger, wherein F is the pressure of the single contact finger, and n 3 The number of springs, k is the spring coefficient, D is the diameter of the circle bound by the springs, l 0 The initial length of the spring, n1 is the number of contact finger groups, n 2 The number of the plum blossom contact fingers in each group; s430, determining the cambered surface pressure of each plum blossom contact finger according to the single-chip contact finger pressure.
According to the plum blossom touch finger clamping force detection method, the calculation method of each cambered surface pressure is as follows: if the number of contact finger groups contacted by the cambered surface 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 contacted by the cambered surface is double, 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 pressure of a single contact finger, A=n1/6, A is an integer, and n1 is the number of contact finger groups.
According to the quincuncial contact finger clamping force detection method, the method further comprises the step of setting a corresponding threshold value for the contact finger pressure, wherein the threshold value of the contact finger pressure is calculated through Fc=n1ζH2pi a 2, fc is the contact finger pressure, H is the material hardness, a is the contact spot radius, and zeta material coefficient.
The plum blossom touch finger clamping force detection method comprises the following steps: determining contact resistance of the quincuncial contact finger and conductor heating, wherein the contact resistance is calculated through RC=0.89 rho (ζH/n1 Fc)/(1/2), the conductor heating is calculated through Tk= (IR)/(8.4 x 10 (-8) T0), abrasion, aging and spring deformation of the quincuncial contact finger are further determined, and detection results of the quincuncial contact finger are displayed through an interactive interface.
The technical scheme of the invention also comprises a quincuncial contact finger clamping force detection device for realizing any one of the methods, wherein the device comprises a quincuncial contact finger clamping force test device, detection equipment and a remote server, the quincuncial contact finger clamping force test device and the detection equipment are in wireless communication in the same network, and the detection equipment and the remote server are in remote wireless communication; the quincuncial contact finger clamping force testing device is provided with a camera device; the quincuncial contact finger clamping force testing device collects pictures of the quincuncial contact fingers through the camera device, and the model of the quincuncial contact fingers is determined according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the model of the plum blossom contact finger; the detection equipment demonstrates the demonstration animation in the detection data through an interactive interface, and dynamically adjusts the demonstration animation process according to the clamping force acquisition signal of the quincuncial contact finger clamping force testing device; the detection equipment calculates the clamping force of the plum blossom contact finger according to the acquired signals, determines the state of the plum blossom contact finger according to the clamping force of the plum blossom contact finger, and displays and stores the detection result of the clamping force of the plum blossom contact finger 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 detection device comprises an elastic expansion detection ring, and the elastic expansion detection ring is formed by tightly splicing at least 4 sector expansion units in a ring shape.
The beneficial effects of the invention are as follows: the detection threshold is reduced and the detection accuracy is improved.
Drawings
The invention is further described below with reference to the drawings and examples;
fig. 1 shows a general flow chart according to an embodiment of the invention.
Fig. 2 shows a block diagram of a device connection according to an embodiment of the invention.
Fig. 3 shows an initialization flow chart according to an embodiment of the invention.
Fig. 4 is a flowchart illustrating a detection setting according to an embodiment of the present invention.
FIG. 5 illustrates an interaction detection flow according to an embodiment of the present invention.
Fig. 6 is a flow chart of quincuncial finger analysis according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a quincuncial contact finger clamping force testing device according to an embodiment of the present invention;
FIG. 8 is an exploded view of the head of FIG. 7;
fig. 9 is a top view of a test head of the quincuncial contact finger clamping force testing device according to an embodiment of the present invention.
Detection block 100, detection face 110, conduction face 120, arc-shaped groove 130, concave part 140; an elastic connection 200.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention in combination with the specific contents of the technical scheme.
Fig. 1 shows a general flow chart according to an embodiment of the invention. The process comprises the following steps: s100, collecting pictures of plum blossom touch fingers, and determining the model of the plum blossom touch fingers according to the pictures; s200, downloading corresponding detection data from a remote server according to the model of the plum blossom contact finger; s300, demonstrating the demonstration animation in the detection data through the interactive interface, and dynamically adjusting the demonstration animation process according to the clamping force acquisition signals; s400, calculating the clamping force of the plum blossom touch finger according to the acquired signals, and displaying and storing the detection result of the clamping force of the plum blossom touch finger to a remote server through an interactive interface.
Fig. 2 is a system block diagram according to an embodiment of the present invention. The device comprises a quincuncial contact finger clamping force testing device, a detecting device and a remote server, wherein the quincuncial contact finger clamping force testing device and the detecting device are in wireless communication in the same network, and the detecting device and the remote server are in remote wireless communication; the quincuncial contact finger clamping force testing device is provided with a camera device; the quincuncial contact finger clamping force testing device collects pictures of the quincuncial contact fingers through a camera device (not shown), and determines the types of the quincuncial contact fingers according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the model of the plum blossom contact finger; the detection equipment demonstrates the demonstration animation in the detection data through the interactive interface, and dynamically adjusts the demonstration animation process according to the clamping force acquisition signal of the quincuncial contact finger clamping force testing device; the detection equipment calculates the clamping force of the plum blossom touch finger according to the acquired signals, determines the state of the plum blossom touch finger according to the clamping force of the plum blossom touch finger, and displays and stores the detection result of the clamping force of the plum blossom touch finger to a remote server through an interactive interface.
Fig. 3 shows an initialization flow chart according to an embodiment of the invention. It comprises the following steps: starting the detection equipment and the clamping force testing device; initializing the execution equipment, and executing zero calibration processing on the detected equipment each time the clamping force test is executed, wherein the zero calibration comprises zero resetting calibration on the acquisition signals and the display data, and initializing acquisition configuration of the acquisition equipment; verifying spring tension of clamping force testing device
The device is initialized, and zero calibration processing is performed each time a clamping force test is performed, wherein the zero calibration includes zero calibration of the acquisition signal and the display data, and also initialization of the acquisition device acquisition configuration.
The present embodiment also provides a spring tension detection example,
the diameter of a fixed contact of the plum blossom contact is 49, the number m of contact fingers is 30, rated current is 1250A, the maximum outer diameter of the contact is 86mm, the 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 counted).
From the above conditions, the surrounding ratio of the spring wire c=d2/d=4.45;
the springs were tested for actual data bits using standard weights as tensile tests, as shown in Table 1 below:
| weight of 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 then k=1.008/(222.5-208.5 MM) =0.072 KG/mm= 0.7056N/MM
The spring stiffness coefficient is calculated according to the above formula as:
G＝8*k*C^3n/d＝8*4.45^3*174*0.072/1.1＝8028Kg/mm2
the initial tension of the spring is: f0 =3.91-0.072 (222.5-192) =0.706 kg;
the tension of the spring according to the spring coefficient is:
Fk＝K*(Π*(R-D1)-L0)+F0＝0.072*(3.14*80-202)+0.706＝4.2484KG＝41.6N。
fig. 4 shows a detection setting flowchart according to an embodiment of the present invention. The process comprises the following steps: s210, setting the detected equipment number, test point and the number of the transformer substation according to the model of the plum blossom contact finger; s220, transmitting detection data of the model of the plum blossom contact finger through a remote server, wherein the detection data comprise detection animation data and parameter data of the plum blossom contact finger. S210 of the present embodiment further includes: the method comprises the steps of self-defining a quincuncial contact finger detection flow and detection items, generating detection animation data through a remote server according to the detection flow and the detection items, automatically generating the detection animation data through a plurality of different detection flows pre-stored in the server and animation fragments of the detection items, and enabling the detection flow corresponding to the detection animation data to be based on a quincuncial contact finger clamping force detection criterion.
FIG. 5 illustrates an interaction detection flow according to an embodiment of the present invention. The process comprises the following steps: s310, playing the detection animation data through an interactive interface; s320, acquiring the acquired signals, automatically playing the detection animation data or performing error prompt according to the acquired signals, wherein the automatic playing of the detection animation data is that the acquired signal type is consistent with the detection flow and the detection item, the error prompt is that the acquired signal type is inconsistent with the detection flow and the detection item, and automatically repeating the animation of the current flow after performing error prompt; s330, the process loops S320 until the detection flow and the detection item are processed.
The flow corresponding to the detection animation display is as follows: inserting a test probe into the extensible tool, and screwing and fixing a flat pad, an extensible detection ring and a test probe for detection; slightly inserting the extended detection ring 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 the test data detected by the test probe to a test host computer to finish one-time measurement; stopping the test, rotating the test probe anticlockwise, and returning the extensible tool; and (3) pulling out the expandable fixture from the plum blossom contact by slightly pulling out the handle of the test probe, and adjusting the contact position of the expandable fixture and the plum blossom contact by rotating the expandable fixture clockwise by a corresponding angle.
Fig. 6 is a flow chart of quincuncial finger analysis according to an embodiment of the present invention. Comprising the following steps:
s410, determining the tension of the spring for testing according to the spring parameter and the quincuncial contact parameter of the detection data;
s420, by the formula f=2n 3 πk(πD-l 0 )/(n1n 2 ) Calculating the pressure of the single contact finger, wherein F is the pressure of the single contact finger, and n 3 The number of springs is k, the spring coefficient is k, and D is the circle straightness of the spring bindingDiameter l 0 The initial length of the spring, n1 is the number of contact finger groups, n 2 The number of the plum blossom contact fingers in each group;
s430, determining the cambered surface pressure of each plum blossom contact finger according to the pressure of the single contact finger.
The technical scheme of the implementation also comprises:
the calculation method of the cambered surface pressure of each piece comprises the following steps:
if the number of contact finger groups contacted by the cambered surface 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 contacted by the cambered surface is double, 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 pressure of a single contact finger, A=n1/6, A is an integer, and n1 is the number of contact finger groups.
The method comprises the steps that a corresponding threshold value is set for the contact finger pressure, the threshold value of the contact finger pressure is calculated through Fc=n1ζH2pi a-2, fc is the contact finger pressure, H is the material hardness, a is the contact spot radius, and ζ is the material coefficient.
Determining contact resistance of the quincuncial contact finger and conductor heating, wherein the contact resistance is calculated through RC=0.89 rho (ζH/n1 Fc)/(1/2), the conductor heating is calculated through Tk= (IR)/(8.4 x 10 (-8) T0), abrasion, aging and spring deformation of the quincuncial contact finger are further determined, and detection results of the quincuncial contact finger are displayed through an interactive interface.
Referring to fig. 7 to 9, a sensing head for sensing a quincuncial contact finger according to an embodiment of a first aspect of the present invention, the sensing head being provided in a column shape with a through hole centrally provided for connection with a sensing gun, includes:
the utility model provides a detection device, a plurality of independent detection piece 100, can constitute columnar detection head after the concatenation of all detection pieces 100, be used for detecting plum blossom touch finger, the outer wall of every detection piece 100 sets up to detection face 110, be used for the butt on the inner wall of plum blossom touch finger, the inner wall of every detection piece 100 sets up to conduction face 120, this face contacts with the rifle head of detecting the rifle, be used for conducting the reaction force that detection face 110 received to the rifle head of detecting the rifle, the upper end at the outer wall of detection piece 100 still is provided with arc recess 130, after all detection pieces 100 splice 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 circular slot is perpendicular with the axial of columnar detection head, install elastic connection piece 200 in the circular slot, assemble all detection pieces 100 together through this elastic connection piece 200.
The detection principle of the detection head is as follows: the detection blocks 100 are assembled 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 contact finger, the detection surface 110 of each detection block 100 is abutted against the inner wall of the plum blossom contact finger, the gun head of the detection gun is inserted into the through hole, each detection block 100 generates an outward displacement trend, an acting force is generated on the inner wall of the plum blossom contact finger, under the action of a spring of the plum blossom contact finger, a reverse acting force is formed on the detection surface 110 and is conducted to the conducting surface 120 through the detection surface 110, then the conducting surface 120 conducts the acting force to the gun head of the detection gun, finally the detection gun conducts to a terminal for analysis, the size of the elastic force fed back by the spring of the plum blossom contact finger is judged, whether the spring of the plum blossom contact finger is normal or not is judged, and whether the force conducted to each plum blossom contact point is uniform or not is consistent or not is judged by combining the feedback results of each detection surface 110.
The outer wall of the test head 100 refers to a side away from the through hole with respect to the through hole, and the inner wall refers to a side where the through hole is formed.
A detection head according to an embodiment of the first aspect of the present invention has at least the following advantageous effects: the detection blocks 100 are assembled together to form the columnar detection head through the elastic connecting piece 200, the through hole for connecting the detection gun is formed in the center, the detection head is connected to 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 to the inner wall of the plum blossom contact finger and are extruded outwards, the reaction force of the detection surfaces 110 is conducted onto the conduction surfaces 120 and into the detection gun, and finally the reaction force is uploaded to the terminal to judge whether the elasticity of the plum blossom contact finger is normal or not.
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 are provided with a plurality of plum blossom contacts, the plum blossom contacts are generally distributed in a circumferential array on the plum blossom contact fingers, or are divided into a plurality of groups of plum blossom contacts with the same number, the groups are distributed in a circumferential array, gaps are arranged between each group, the gap distance is greater than the gap between two plum blossom contacts, the areas of the plum blossom contacts contacted by the detecting surface 110 of each detecting block 100 in the detecting process can be kept consistent, the spring failure of the plum blossom contact fingers is removed, the condition of corrosion abrasion of the plum blossom contacts can also occur, and in the condition of consistent detecting contact areas, whether the spring failure occurs or the corrosion abrasion of the plum blossom contacts causes the change of the contact areas is easily judged according to the result, so that the conducted forces are different.
In the present embodiment, the number of 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 in a sector shape from top to bottom, the detecting surface 110 is configured as a curved surface, the detecting head formed by the detecting block 100 is in a cylindrical shape, 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 detection surface 110 may be configured as a plane, and the detection head may be prismatic, and this type of detection head is suitable for use with the tulip contact fingers that are divided into several sets of tulip contacts.
According to some embodiments of the present invention, referring to fig. 8 or 9, the conductive surface 120 is provided with an arc surface, and after the plurality of detection blocks 100 are assembled by the elastic connection piece 200, the plurality of conductive surfaces 120 form through holes, so that the conduction force can be conducted to the gun head of the detection gun in the largest area, and the accuracy of the test is improved.
In the above embodiment, the concave portion 140 is further disposed on the conductive surface 120, one end of the cambered surface is connected with one end of the concave portion 140, the concave portion 140 may be suitable for positioning a detection gun, a positioning convex portion is disposed on a gun head of the detection gun corresponding to the concave portion 140, the gun head of the detection gun is inserted into the through hole, after the positioning convex portion is aligned with the concave portion 140, the cambered surface and the concave portion 140 are both disposed non-concentrically with the through hole, the positioning convex portion rotates after the gun head is rotated, so that the positioning convex portion generates a force on the conductive surface 120, so that the detection block 100 is displaced outwards, the detection head is clamped in the center of the plum blossom contact finger more tightly, the detection surface 110 is kept in close contact with the plum blossom contact, and accuracy of a test result can be improved.
In the above embodiment, one end of the cambered surface of each detection block 100 is connected to one end of the recess 140 of itself, and the other end of the cambered surface is connected to the other end of the recess 140 on the adjacent detection block 100.
A detection device according to a second aspect of the present invention has a detection head as described above.
The plurality of detection blocks 100 are assembled together to form a columnar detection head through the elastic connecting piece 200, a through hole for connecting a detection gun is formed in the center, the detection head is connected to the detection gun, the center of the plum blossom contact finger is inserted, the detection surfaces 110 of the plurality of detection blocks 100 are abutted against the inner wall of the plum blossom contact finger and are extruded outwards, and the reaction force is conducted from the detection surfaces 110 to the conduction surfaces 120.
Referring to fig. 7-9, in combination with the technical schemes of fig. 1-6, the invention is an embodiment of carrying out custom editing on the detection flow of the plum blossom contact finger, and realizing improvement on the plum blossom contact finger detection by combining editing, animation demonstration and signal acquisition of the flow in remote service, so that the requirements are lower, the flow processing is standardized, and the detection precision is ensured
It should be appreciated that the method steps in embodiments of the present invention may be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in 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.
Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described herein may be performed under 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), by hardware, or combinations thereof, collectively executing on one or more processors. 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 computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the invention may be implemented 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, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the invention described herein includes these and other different types of non-transitory computer-readable storage media. The invention also includes the computer itself when programmed according to the methods and techniques of the present invention.
The computer program can be applied to the input data to perform the functions described herein, thereby converting the input data to generate output data that is stored to the 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 specific 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 one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (13)
1. The plum blossom touch finger clamping force detection method is characterized by comprising the following steps of:
s100, collecting pictures of plum blossom touch fingers, and determining the model of the plum blossom touch fingers according to the pictures;
s200, downloading corresponding detection data from a remote server according to the model of the plum blossom contact finger;
s300, demonstrating the demonstration animation in the detection data through an interactive interface, and dynamically adjusting the demonstration animation process according to the clamping force acquisition signal;
s400, calculating the clamping force of the plum blossom touch finger according to the acquired signals, and displaying and storing the detection result of the clamping force of the plum blossom touch finger to a remote server through an interactive interface, wherein S400 comprises:
s410, determining the tension of the spring for testing according to the spring parameter and the quincuncial contact parameter of the detection data;
s420, by the formula f=2n 3 πk(πD-l 0 )/(n1n 2 ) Calculating the pressure of the single contact finger, wherein F is the pressure of the single contact finger, and n 3 The number of springs, k is the spring coefficient, D is the diameter of the circle bound by the springs, l 0 The initial length of the spring, n1 is the number of contact finger groups, n 2 The number of the plum blossom contact fingers in each group;
s430, determining the cambered surface pressure of each plum blossom contact finger according to the single-chip contact finger pressure.
2. The quincuncial contact finger clamping force detection method according to claim 1, wherein S100 further comprises:
the device is initialized, and zero calibration processing is performed each time a clamping force test is performed, wherein the zero calibration includes zero calibration of the acquisition signal and the display data, and also initialization of the acquisition device acquisition configuration.
3. The quincuncial contact finger clamping force detection method according to claim 1, wherein S100 further comprises:
and verifying the spring tension for the clamping force test, wherein the spring tension passes a spring tension test or spring tension data stored in the remote server.
4. The quincuncial contact finger clamping force detection method according to claim 1, wherein S100 comprises:
s110, acquiring a vertical shot picture of the plum blossom contact finger through a camera device;
s120, analyzing the shape characteristics of the vertically shot picture, matching the shape characteristics with the shapes of the models of different regular plum blossom contact fingers through scaling and selection, and determining the model of the detected plum blossom contact finger, wherein the shape characteristics are obtained through boundary characteristic processing.
5. The quincuncial contact finger clamping force detection method according to claim 4, wherein S200 comprises:
s210, setting the detected equipment number, test point and the number of the transformer substation according to the model of the plum blossom contact finger;
s220, transmitting detection data of the model of the plum blossom contact finger through a remote server, wherein the detection data comprise detection animation data and parameter data of the plum blossom contact finger.
6. The quincuncial contact finger clamping force detection method according to claim 5, wherein S210 further comprises:
and the detection flow corresponding to the detection animation data is based on a quincuncial finger clamping force detection criterion.
7. The quincuncial contact finger clamping force detection method of claim 6, wherein S300 comprises:
s310, playing the detection animation data through an interactive interface;
s320, acquiring the acquired signals, automatically playing the detection animation data or performing error prompt according to the acquired signals, wherein the automatic playing of the detection animation data is that the acquired signal types are consistent with the detection flow and the detection items, the error prompt is that the acquired signal types are inconsistent with the detection flow and the detection items, and automatically repeating playing the animation of the current flow after performing error prompt;
s330, the step S320 is circulated until the detection flow and the detection items are processed.
8. The quincuncial contact finger clamping force detection method according to claim 7, wherein the detection method corresponding to the detection animation data at least comprises the following procedures:
inserting a test probe into the extensible tool, and screwing and fixing a flat pad, an extensible detection ring and a test probe for detection;
slightly inserting the extended detection ring 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 the test data detected by the test probe to a test host computer to finish one-time measurement;
stopping the test, rotating the test probe anticlockwise, and returning the extensible tool;
and (3) pulling out the expandable fixture from the plum blossom contact by slightly pulling out the handle of the test probe, and adjusting the contact position of the expandable fixture and the plum blossom contact by rotating the expandable fixture clockwise by a corresponding angle.
9. The quincuncial contact finger clamping force detection method according to claim 1, wherein the calculation method of each cambered surface pressure is as follows:
if the number of contact finger groups contacted by the cambered surface is singular, 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+1；
If the number of contact finger groups contacted by the cambered surface is two, the contact finger groups are
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 pressure of a single contact finger, A=n1/6, A is an integer, and n1 is the number of contact finger groups.
10. The method of claim 9, further comprising setting a corresponding threshold for the finger pressure, the threshold for the finger pressure being calculated by fc=n1ζhζhζa ζ 2, fc being finger pressure, H being material hardness, a being contact spot radius, ζ material coefficient.
11. The method for detecting the clamping force of the quincuncial contact fingers according to claim 10, further comprising:
determining contact resistance of the quincuncial contact finger and conductor heating, wherein the contact resistance is calculated through RC=0.89 rho (ζH/n1 Fc)/(1/2), the conductor heating is calculated through Tk= (IR)/(8.4 x 10 (-8) T0), abrasion, aging and spring deformation of the quincuncial contact finger are further determined, and detection results of the quincuncial contact finger are displayed through an interactive interface.
12. A quincuncial contact finger clamping force detection device for implementing the method of any one of claims 1-11, the device comprising a quincuncial contact finger clamping force testing device, a detection apparatus and a remote server, the quincuncial contact finger clamping force testing device and the quincuncial contact finger clamping force testing deviceThe detection equipment performs wireless communication in the same network, and the detection equipment performs remote wireless communication with the remote server; the quincuncial contact finger clamping force testing device is provided with a camera device; the quincuncial contact finger clamping force testing device collects pictures of the quincuncial contact fingers through the camera device, and the model of the quincuncial contact fingers is determined according to the pictures; the detection equipment downloads corresponding detection data from a remote server according to the model of the plum blossom contact finger; the detection equipment demonstrates the demonstration animation in the detection data through an interactive interface, and dynamically adjusts the demonstration animation process according to the clamping force acquisition signal of the quincuncial contact finger clamping force testing device; the detection equipment calculates the clamping force of the plum blossom contact finger according to the acquired signals, determines the state of the plum blossom contact finger according to the clamping force of the plum blossom contact finger, displays the detection result of the clamping force of the plum blossom contact finger through an interactive interface and stores the detection result to the remote server, and comprises the following steps: determining the tension of a spring for testing according to the spring parameters and the quincuncial contact parameters of the detection data; by the formula f=2n 3 πk(πD-l 0 )/(n1n 2 ) Calculating the pressure of the single contact finger, wherein F is the pressure of the single contact finger, and n 3 The number of springs, k is the spring coefficient, D is the diameter of the circle bound by the springs, l 0 The initial length of the spring, n1 is the number of contact finger groups, n 2 The number of the plum blossom contact fingers in each group; and determining the cambered surface pressure of each plum blossom contact finger according to the pressure of the single contact finger.
13. The quincuncial contact finger clamping force detection device of claim 12, wherein the quincuncial contact finger clamping force testing device comprises an elastically expandable detection ring formed by at least 4 sector expansion units in a ring-shaped tight splice.
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