CN115468691A - Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment - Google Patents
Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment Download PDFInfo
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- CN115468691A CN115468691A CN202211129882.2A CN202211129882A CN115468691A CN 115468691 A CN115468691 A CN 115468691A CN 202211129882 A CN202211129882 A CN 202211129882A CN 115468691 A CN115468691 A CN 115468691A
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- 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
Abstract
The application relates to the technical field of mechanical assembly process measurement, and provides a method, a system, a terminal device and a product for measuring mechanical characteristics of a smart card mounting structure of communication equipment. The method comprises the following steps: acquiring a pop-up process video in a card support pop-up process; based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble; and obtaining the critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector at the critical moment aiming at the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support. By adopting the method, the mechanical characteristics of the card support structure of the intelligent card can be accurately and precisely measured, and the main factors influencing the mechanical property of the structure can be conveniently checked.
Description
Technical Field
The application relates to the technical field of mechanical assembly process measurement, in particular to a method, a system, a terminal device and a product for measuring mechanical characteristics of a smart card mounting structure of communication equipment.
Background
In modern society, communication equipment has become an indispensable tool in people's life; when the communication equipment is used, the smart card needs to be placed in the communication equipment card support, and then the communication equipment card support and the smart card are inserted into the mobile phone. When replacing or installing the smart card, the card support is required to have enough ejection amount for convenient installation.
In the design of the existing installation structure, because the mechanical characteristics of the sim card cannot be accurately and finely measured and various mechanical indexes cannot be well decoupled and separated, a large amount of experiments are required to verify and find out main factors influencing the mechanical performance of the sim card installation structure, and correspondingly, a large amount of experiments are required to verify the mechanical indexes, so that the production cost is increased. And because various mechanical indexes cannot be separately researched, the mechanical property of the sim card mounting structure is difficult to meet the requirement in a preset time, and the delivery cycle of the product is seriously influenced. The ejection force, the friction force and the ejection force are used as important mechanical properties of the mounting structure, and how to accurately acquire the relationship between each mechanical property contributed by the mounting structure and the displacement of the card holder in the movement process of the card holder under the actual working condition is a key factor for assisting in positioning the mechanical property problem point of the mounting structure. As shown in fig. 6, the existing index measurement method does not consider the deformation of the pop-up control rod and the pop-up rod, the pop-up force is equivalent to the pressing force, the pressing force and the pop-up force corresponding to the pressing force are obviously different, the actual index cannot be reflected, and the test process is complicated.
Disclosure of Invention
Therefore, it is necessary to provide a method for accurately and precisely measuring the mechanical characteristics of the smart card structure, and a method, a system, a terminal device and a product for measuring the mechanical characteristics of the smart card mounting structure of the communication device for measuring various mechanical indexes are provided.
The embodiment of the application provides a method for measuring mechanical properties of a smart card mounting structure of communication equipment, wherein the smart card mounting structure comprises a card support, a card seat elastic sheet, a PCB (printed circuit board) and a shell material, and the method for measuring mechanical properties of the smart card mounting structure of the communication equipment comprises the following steps:
acquiring a pop-up process video in a card support pop-up process;
based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble;
and obtaining a critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector pin at the critical moment on the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support, wherein the critical point refers to a position where the flange of the card support is over against the flange of the card seat elastic sheet.
In some embodiments, the obtaining, based on the pop-up process video, a time-displacement association relationship of the card holder in the card holder pop-up process and a time-displacement association relationship of the thimble includes:
reading each frame image and sampling time in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
Specifically, the obtaining a critical time when the card support reaches a critical point based on the time-displacement association relationship of the card support, and obtaining a jacking force of the jack at the critical time against the card support according to the time-displacement association relationship of the card support, the time-displacement association relationship of the ejector pin, and the rigidity of the ejector rod in the card support ejection process includes:
and acquiring the time when the acceleration of the card support is 0 based on the time-displacement incidence relation of the card support, wherein the time when the acceleration of the card support is 0 is the critical time when the card support reaches the critical point.
Further, after obtaining the time-displacement association relationship of the card holder in the card holder ejecting process and the time-displacement association relationship of the thimble based on the ejecting process video, the method further includes:
and obtaining the deceleration moment when the card support reaches a deceleration stage based on the time-displacement incidence relation of the card support, and obtaining the friction force applied to the card support at the deceleration moment according to the time-displacement incidence relation of the card support in the deceleration process of the card support, the mass of the card support and the mass of the smart card.
In some embodiments, obtaining a deceleration time when the card holder reaches a deceleration stage based on a time-displacement association relationship of the card holder, and obtaining a friction force on the card holder at the deceleration time according to the time-displacement association relationship of the card holder in a deceleration process of the card holder, a card holder mass, and a mass of the smart card, includes:
and obtaining the time when the acceleration of the card support is less than 0 based on the time-displacement incidence relation of the card support, wherein the time when the acceleration of the card support is less than 0 is the deceleration time when the card support reaches a deceleration stage.
Specifically, after obtaining the time-displacement association relationship of the card holder in the card holder ejecting process and the time-displacement association relationship of the thimble based on the ejecting process video, the method further includes:
and obtaining the acceleration section moment after the card support passes through the critical point based on the critical moment and the deceleration moment, and obtaining the ejection force of the elastic sheet at the acceleration moment to the card support according to the time-displacement association relation of the card support in the card support acceleration process, the card support mass and the mass of the smart card.
Further, obtaining an acceleration section time after the card holder passes through the critical point based on the critical time and the deceleration time, and obtaining a pop-up force of the shrapnel at the acceleration time to the card holder according to a time-displacement association relation of the card holder in the acceleration process of the card holder, the card holder mass and the mass of the smart card, including:
and obtaining the acceleration of the card support passing through the critical point at the acceleration moment greater than 0 based on the time-displacement association relation of the card support.
The embodiment of the application provides a smart card mounting structure mechanical properties measurement system of communication equipment, includes:
the video acquisition module is used for acquiring a pop-up process video in the card holder pop-up process;
the relation generation module is used for obtaining the time-displacement incidence relation of the card support in the card support ejecting process and the time-displacement incidence relation of the thimble based on the ejecting process video;
and the ejection force calculation module is used for obtaining the critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector at the critical moment for the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support.
The embodiment of the application provides a terminal device, which comprises a processor and a memory, wherein at least one instruction, at least one section of program, a code set or an instruction set are stored in the memory, and the instruction, the program, the code set or the instruction set is loaded by the processor and executes the method for measuring the mechanical property of the smart card installation structure of the communication device provided by any embodiment of the application.
The embodiment of the application provides a computer program product, and when an instruction in the computer program product is executed by a processor of a terminal device, the terminal device can execute the method for measuring the mechanical characteristics of the smart card installation structure of the communication device provided by any embodiment of the application.
According to the method, the system, the terminal device and the product for measuring the mechanical characteristics of the smart card installation structure of the communication device, the time-displacement incidence relation of the card holder and the time-displacement incidence relation of the ejector pin are obtained through the video of the card holder ejecting process, and the ejecting force to the card holder is obtained based on the time-displacement relation of the card holder and the ejector pin. By the method, parameters influencing the mechanical index of the card support can be separated, so that main factors influencing the mechanical performance of the smart card mounting mechanism can be accurately verified, and a large amount of test verification and production cost are saved. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic flow chart illustrating a method for measuring mechanical characteristics of a smart card mounting structure of a communication device according to an embodiment;
FIG. 2 is a schematic diagram of a thimble displacement measurement and a card holder displacement measurement in one embodiment;
FIG. 3 is a schematic diagram of a card holder displacement phase in one embodiment;
fig. 4 is a block diagram showing a mechanical characteristic measurement system of a smart card mounting structure of the communication apparatus in one embodiment;
FIG. 5 is a diagram showing an internal structure of a terminal device in one embodiment;
FIG. 6 is a prior art ejection force test method;
FIG. 7 is a flow diagram of a method for scaling image pixel displacement to actual displacement according to one embodiment;
FIG. 8 is a flow chart of a method for calculating ejection force, friction force, and ejection force in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a method for measuring mechanical characteristics of a smart card mounting structure of a communication device is provided. The embodiment is exemplified by applying the method to the communication device, so as to understand that the method may also be applied to a server or a terminal device, and may also be applied to a system including a terminal and a server, and is implemented through interaction between the terminal and the server. Here, the type of the smart card is not limited, and a card having a predetermined function may be placed according to the function of the card holder. Optionally, the smart card is a SIM card, an SD card, a TF card, a memory card. In this embodiment, the privacy protection method for the terminal device includes the following steps:
and step S101, acquiring a pop-up process video in the card support pop-up process.
Specifically, a video process of ejecting the thimble out of the card holder of the communication equipment is recorded through a high-speed camera. As shown in fig. 2, the communication device is required to be placed at the center of a placement surface recorded by the high-speed camera, the color of the placement surface is pure, and the colors of the placement surface, the thimble and the card holder are different in pairs, so that the high-speed camera can distinguish the motion tracks of the placement surface, the thimble and the card holder. Here, the color of the placement surface is not limited, and optionally, the placement surface is red, the card holder is blue, and the thimble is red. And starting the high-speed camera before the thimble presses the communication equipment, pushing the thimble by using the jig until the card support is completely popped out, stopping video recording of the high-speed camera after the card support is completely popped out, and storing the video in a preset format. And decomposing the video into pictures with preset formats frame by frame through an imageio module of python. The preset format of the video and the preset format of the picture are not limited, and preferably, the video is stored in an avi or mp4 format; the pictures are stored in a. Jpg or. Png format.
And S102, obtaining a time-displacement incidence relation of the card support in the card support ejecting process and a time-displacement incidence relation of the thimble based on the ejecting process video.
Specifically, the displacement of the card holder within the preset time period and the displacement of the thimble within the preset time period can be obtained through the video recorded by the high-speed camera. Based on the displacement of the card support within a preset time period, a time-displacement function in the movement process of the card support, namely a time-displacement association relation of the card support, can be obtained; based on the displacement of the thimble within the preset time period, a time-displacement function in the thimble movement process, namely the time-displacement incidence relation of the thimble, can be obtained.
In some embodiments, the obtaining, based on the pop-up process video, a time-displacement association relationship of the card holder in the card holder pop-up process and a time-displacement association relationship of the thimble includes:
reading each frame image and sampling time in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
Specifically, the image is read and converted into a picture in a preset format after being shot by the high-speed camera. The image comprises all pictures after the ejector pin is pushed by the jig until the card support is completely ejected. Reading image information and time information in all pictures, and selecting colors different from the thimble and the placing surface by the card holder, so that the positions of the card needle and the thimble can be represented by RGB (red, green, blue and green) arrays, for example, the gray RGB array is = [128, 128, 128], the card holder color RGB array = [ a, b, c ], the thimble color RGB array = [ a1, b1, d1], wherein a, b, c, a1, b1, c1 belong to [0, 255]. The high-speed camera is right opposite to the center of the placing surface shown in the figure 2, pixel point positions of the placing surface are arranged by using a matrix, assuming that n × n pixel points are total, the side length of the placing surface is L, and pixel point position coordinates of the card holder and the thimble are marked by [ x, y ], wherein x and y belong to [ -n/2, n/2], and are integers; the pixel point color may be represented by [ x, y, u, v, w ]. The video duration is L milliseconds, m frames are total, the time of the tth frame is t × L/m milliseconds, wherein t belongs to [0, m ], and is an integer.
When the t frame image is t × L/m millisecond, the pixel point of the card support is represented by [ x _ t, y _ t ], the ejection amount is represented by the minimum value of x _ t, and the card support displacement amount is d1_ t; the thimble pixel point position is represented by [ x1_ t, y1_ t ], the ejection quantity is represented by the maximum value of x1_ t, and the thimble displacement is d2_ t.
For example, assume that the video duration is 1 second and the total number of frames is 30 frames, and the 1 st frame of image is 1 × 1/30=1/30 second. For the first image within the video duration, reading RGB values of pixel points by traversing all pixel points in the image, comparing the RGB values with RGB values of a thimble and a thimble support, finding out all the pixel points of the thimble and the thimble in the image, and sorting the bit numbers of the pixel points of the thimble and the thimble in the x direction of the thimble and the thimble support, wherein the thimble of the thimble in the card support is positioned in two quadrants and three quadrants in fig. 2, the minimum value of the bit numbers of the pixel points in the x direction of the thimble is the boundary of the thimble and the minimum value of the bit numbers of the pixel points in the x direction of the thimble is the boundary of the thimble. The first image capto boundary is represented as: x _1 \/min, the thimble boundary is represented as: x1_1 \/min; at time t × L/m milliseconds, the kato boundary is expressed as: x _ t _ min, the thimble boundary is expressed as: x1_ t _ min, until all images in the video duration are detected, converting the image pixel displacement into an actual displacement flow chart as shown in fig. 7, wherein L represents the total duration of the image, m represents the total frame number, and the actual card support and thimble displacement data are obtained according to the card support and thimble position data at a specific moment.
x1_1 \/min; at the time of t × L/m milliseconds, the displacement of the pixel in the pixel tray is x _ t, as shown in formula 1:
dx_t＝x_1_min-x_t_min 1)
the thimble pixel displacement is dx1_ t, as shown in equation 2:
dx1_t＝x1_t_min-x1_1_min 2)
from the mapping of the pixel displacement to the actual size, the capto displacement is d1_ t, as shown in equation 3:
d1_t＝2*(dx_t/n)*d3 3)
the displacement of the thimble is d2_ t, as shown in formula 4:
d2_t＝2*(dx1_t/n)*d3 4)
where d3 is half the length of the mounting surface in the left-right direction.
Card holding time-displacement amount data: (t × L/m, d1_ t);
thimble time-displacement data: (t L/m, d2_ t),
for convenience of subsequent description, the following simplified expression is made here:
T＝t*L/m；K_T＝d1_t；D_T＝d1_t；
namely, the simplified click time-displacement amount data is expressed as: (T, K _ T);
the simplified data of the thimble time-displacement is expressed as follows: (T, D _ T).
Further processing the time-displacement data by adopting an interpolation method: the polynomial interpolation or the Lonnlet interpolation or other interpolation methods are used for carrying out interpolation processing on the data to obtain time-displacement functions in the movement process of the card holder and the thimble: the time-displacement function during the movement of the card holder, i.e. the time-displacement correlation of the card holder, is shown in equation 5:
K_T＝f(T) 5)
the time-displacement function in the movement process of the thimble, that is, the time-displacement correlation relationship of the thimble, is shown in formula 6:
D_T＝g(T) 6)
in some embodiments, further comprising: and eliminating invalid pictures in the video in the popping process.
Specifically, the invalid picture in the video is a picture in which the thimble and the card holder do not generate pixel displacement, and the picture cannot reflect the motion process of the card holder and the thimble along with the change of time.
Step S103, obtaining a critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector pin at the critical moment on the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support, wherein the critical point refers to the position of the flange of the card support facing the flange of the card seat elastic sheet.
Specifically, the ejection force is an important mechanical property in the card holder mounting structure, and the ejection force is required to meet a preset range when the ejector pin ejects the rod when pushing the card holder mounting structure, so as to prevent the ejection force from being too large due to too large thrust, so that a user is difficult to eject the card holder, and the ejection working condition is as shown in fig. 3 (a). As shown in fig. 3 (c), there is a protruding point between the card holder and the card holder elastic sheet, the protruding point is a flange of the card holder and a flange of the card holder elastic sheet, when the midpoint of the flange of the card holder moves to the midpoint of the flange of the card holder elastic sheet, the position is a critical point, and the ejection force is a force exerted on the card holder by the ejector pin when the card holder passes through the critical point. When the thimble is just inserted, as shown in fig. 3 (a), the card holder is in a slow crawling stage, because the deformation of the card holder elastic sheet is mainly the longitudinal stretching of the whole elastic sheet under the condition of overlarge thrust, the longitudinal stretching deformation is enough to balance the strength limit of an adult, so before the card holder reaches a critical point, the transverse deformation process of the card holder elastic sheet is slow, and at the moment, the card holder is subjected to the extrusion force of the ejection stem on the card holder and the extrusion force of the card holder elastic sheet on the card holder. And gradually reducing the resultant force along with the increase of the transverse deformation of the elastic sheet until the resultant force reaches the minimum at the critical point, and after passing through the critical point, the transverse deformation of the elastic sheet starts to recover, and the resultant force starts to increase, which indicates that an acceleration function pole exists at the critical point. And solving a time-displacement function in the card support movement process for three times to obtain a moment corresponding to the extreme point, wherein the moment is the moment when the card support passes through the critical point, and the moment is the minimum ejection force moment required by the ejection of the card support. Under the condition that the rigidity of the ejection rod is large enough, the ejector pin press-in amount is equal to the ejection amount of the smart card; however, the pop-up control rod and the pop-up rod may deform to some extent in general, and the product of the deformation and the rigidity is the ejection force, that is, at time T, F1 (T) = (K _ T-D _ T) = (distance the clip moves — distance the ejector pin moves) the rigidity of the pop-up control rod and the pop-up rod is obtained by using elastic mechanics or finite element method. Further, when T = T0, the ejection force, F top, is obtained from F1 (T) = (K _ T-D _ T) = (K _ T _ D _ T) × K, the time-displacement correlation of the card holder, and the time-displacement correlation of the thimble.
In one embodiment, the obtaining a critical time when the card holder reaches a critical point based on the time-displacement association relationship of the card holder, and obtaining a pushing force of the jack against the card holder at the critical time according to the time-displacement association relationship of the card holder, the time-displacement association relationship of the ejector pin, and the rigidity of the ejector rod in the card holder ejecting process includes:
and acquiring the time when the acceleration of the card support is 0 based on the time-displacement association relation of the card support, wherein the time when the acceleration of the card support is 0 is the critical time when the card support reaches a critical point.
Specifically, in the movement process of the card holder, the resultant force is gradually reduced along with the increase of the transverse deformation of the elastic sheet. When the critical point of the elastic sheet is reached, the resultant force is minimum, and the acceleration of the card holder is 0. The first derivative can be used for solving the speed of the card support, the second derivative can be used for solving the acceleration of the card support, and the third derivative can be used for solving the extreme value of the acceleration. The time when the acceleration is 0 can be known by performing three-time derivation on the time-displacement correlation of the card holder in the ejection process, that is, the time-displacement function of the card holder, and the calculation mode is as shown in formula 7:
in some embodiments, after obtaining the time-displacement association relationship of the card holder in the card holder ejection process and the time-displacement association relationship of the thimble based on the ejection process video, the method further includes:
and obtaining the deceleration moment when the card support reaches a deceleration stage based on the time-displacement incidence relation of the card support, and obtaining the friction force applied to the card support at the deceleration moment according to the time-displacement incidence relation of the card support in the deceleration process of the card support, the mass of the card support and the mass of the smart card.
Specifically, the card holds in the palm frictional force is the power that receives after influencing the card and holding in the palm the critical moment, is the important index that influences the card and hold in the palm the use experience, and frictional force needs set up and presets the within range, if frictional force undersize then can lead to the card to hold in the palm directly and the electronic equipment separation. The card holder is not affected by the elastic force of the elastic sheet and is only affected by the friction force, as shown in fig. 3 (e), the card holder performs deceleration movement at this time, that is, in the deceleration stage, the time-displacement function in the card holder movement process is subjected to three-time derivation, so as to obtain the corresponding time period of the deceleration interval within the total video duration, wherein the deceleration time period is T = [ T1, L ]. Solving the second derivative of the time-displacement function in the card-support motion process to obtain the acceleration in the deceleration time period, wherein the calculation mode is shown as a formula 8:
and then, by using the repeat request, obtaining the mass of the card holder and the mass comprehensive M of the smart card, and obtaining the friction force in the deceleration stage according to the Newton's second law, wherein the calculation mode of F M is shown as a formula 9:
f mol = F "(T) × M, T = [ T1, L ] 9)
In some embodiments, obtaining a deceleration time when the card holder reaches a deceleration stage based on a time-displacement association relationship of the card holder, and obtaining a friction force received by the card holder at the deceleration time according to the time-displacement association relationship of the card holder, a card holder mass, and a mass of the smart card during deceleration of the card holder includes:
and obtaining the time when the acceleration of the card holder is less than 0 based on the time-displacement association relation of the card holder, wherein the time when the acceleration of the card holder is less than 0 is the deceleration time when the card holder reaches the deceleration stage.
Specifically, in the card support movement process, along with the elastic sheet not more than the card support applying elastic force, the card support only receives the effect of friction force gradually, so the card support starts to perform deceleration movement, namely the acceleration of the card support is less than 0. The first derivative can be used for solving the speed of the card support, the second derivative can be used for solving the acceleration of the card support, and the third derivative can be used for solving the extreme value of the acceleration. The time when the acceleration is less than 0 can be known through the time-displacement incidence relation of the card support in the ejecting process, namely, the time-displacement function of the card support is subjected to three-time derivation.
In one embodiment, after obtaining the time-displacement association relationship of the card holder in the card holder ejection process and the time-displacement association relationship of the thimble based on the ejection process video, the method further includes:
and obtaining the acceleration section moment after the card support passes through the critical point based on the critical moment and the deceleration moment, and obtaining the ejection force of the elastic sheet at the acceleration moment to the card support according to the time-displacement association relation of the card support in the card support acceleration process, the card support mass and the mass of the smart card.
Specifically, after the card holder passes through the critical point, the card holder continues to receive the resultant force of the elastic force and the friction force of the elastic sheet, at this time, the elastic sheet applies the elastic force to the moving direction of the card holder, which is an important index influencing the ejection speed in the design structure of the card holder, and at this time, the elastic force received by the card holder is greater than the friction force received by the card holder, and at this time, the card holder performs accelerated motion. Combining the card support reaching critical moment and the card support decelerating moment to obtain the accelerating section moment after the card support passes through the critical point, wherein the accelerating section moment is the ejecting force of [ T0, T1],
f shot = F plus F moles. That is, the F-bullet is calculated as shown in equation 10:
f bullet = (F "(T1) + F" (T)). M10)
And (3) deriving the time-displacement of the card support to obtain the acceleration of the time interval, and further obtaining F-combined through a Newton second law, wherein the F-combined-F-combined elastic force F elastic can be obtained because F elastic is known.
In some embodiments, obtaining an acceleration period time after the card holder passes through the critical point based on the critical time and the deceleration time, and obtaining an ejection force of the elastic sheet at the acceleration time to the card holder according to a time-displacement association relationship of the card holder in an acceleration process of the card holder, a card holder mass, and a mass of the smart card, includes:
and obtaining the acceleration of the card support passing through the critical point at the acceleration moment greater than 0 based on the time-displacement association relation of the card support.
Specifically, as shown in fig. 3 (d), after the card holder passes through the critical point, the resultant force of the elastic force and the friction force of the elastic piece continues to be applied, at this time, the elastic piece applies the elastic force to the movement direction of the card holder, and at this time, the elastic force applied to the card holder is greater than the friction force applied to the card holder, at this time, the card holder performs an accelerated movement, that is, the acceleration of the card holder is greater than 0.
In one embodiment, the ejection force, friction force, and ejection force are calculated as shown in fig. 8.
In summary, according to the method for measuring the mechanical characteristics of the smart card installation structure of the communication device, the time-displacement association relationship of the card holder and the time-displacement association relationship of the thimble are obtained through the video of the card holder ejection process, and the ejection force of the thimble to the card holder is obtained based on the time-displacement relationship of the card holder and the thimble. By the method, parameters influencing the mechanical index of the card holder can be separated, so that main factors influencing the mechanical performance of the intelligent card mounting mechanism are accurately verified, and a large amount of test verification and production cost are saved. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a portion of the steps in fig. 1 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
In an embodiment, as shown in fig. 4, fig. 4 is a block diagram of a mechanical property measurement system of a smart card mounting structure of a communication device in an embodiment of the present application, and a mechanical property measurement system 200 of a smart card mounting structure of a communication device is provided, including: a video acquisition module 210, a relationship generation module 220, and a ejection force calculation module 230.
The video acquisition module 210 is used for acquiring a pop-up process video in a card holder pop-up process;
a relationship generation module 220, configured to obtain a time-displacement association relationship of the card holder and a time-displacement association relationship of the thimble in the card holder ejecting process based on the ejection process video;
the ejection force calculating module 230 is configured to obtain a critical time when the card holder reaches a critical point based on the time-displacement association relationship of the card holder, and obtain an ejection force of the ejector at the critical time against the card holder according to the time-displacement association relationship of the card holder in the card holder ejection process, the time-displacement association relationship of the ejector pin, and the rigidity of the ejection rod.
In one embodiment, the relationship generation module 220 further comprises:
reading each frame image and sampling time in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
In summary, the system for measuring the mechanical characteristics of the smart card installation structure of the communication device provided by the application obtains the time-displacement association relationship of the card holder and the time-displacement association relationship of the thimble through the video of the card holder ejection process, and obtains the ejection force to the card holder based on the time-displacement relationship of the card holder and the thimble. The parameters influencing the mechanical index of the card support can be separated, so that the main factors influencing the mechanical performance of the intelligent card mounting mechanism are accurately verified, and a large amount of test verification and production cost are saved. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
For specific limitations of the system for measuring mechanical characteristics of a smart card mounting structure of a communication device, reference may be made to the above limitations of the method for measuring mechanical characteristics of a smart card mounting structure of a communication device, which are not described herein again. All or part of the modules in the application starting system of the mobile terminal can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a terminal device is provided, the internal structure of which may be as shown in fig. 5. The terminal equipment comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the terminal device is configured to provide computing and control capabilities. The memory of the terminal equipment comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the terminal equipment is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, near Field Communication (NFC) or other technologies. The computer program is executed by a processor to implement an application opening method. The display screen of the terminal equipment can be a liquid crystal display screen or a communication ink display screen, and the input device of the terminal equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the terminal equipment, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that the structure shown in fig. 5 is a block diagram of only a part of the structure related to the present application, and does not constitute a limitation to the terminal device to which the present application is applied, and a specific communication device may include more or less components than those shown in the figure, or combine some components, or have a different arrangement of components.
In one embodiment, the system for measuring mechanical characteristics of a smart card mounting structure of a communication device provided by the present application may be implemented in the form of a computer program that is executable on a computer device as shown in fig. 5. The memory of the computer device may store various program modules of the smart card mounting structure mechanical property measurement system constituting the communication device, such as a video acquisition module, a relationship generation module, and a push-out force calculation module shown in fig. 4. The computer program constituted by the program modules causes the processor to execute the steps of the method for measuring mechanical characteristics of a smart card mounting structure of a communication apparatus according to the embodiments of the present application described in the present specification.
For example, the mobile terminal shown in fig. 5 may be implemented to acquire the pop-up process video in the card tray pop-up process through the video acquisition module of the smart card mounting structure mechanical property measurement system of the communication device shown in fig. 4. And the relation generation module is used for executing the video based on the popping process to obtain the time-displacement incidence relation of the card support in the card support popping process and the time-displacement incidence relation of the thimble. And the ejection force calculation module is used for acquiring the critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and acquiring the ejection force of the ejector at the critical moment for the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejector rod in the ejection process of the card support.
In one embodiment, there is provided a terminal device comprising a memory storing a computer program and a processor implementing the following steps when the processor executes the computer program: acquiring a pop-up process video in a card support pop-up process; based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble; and obtaining the critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector at the critical moment aiming at the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support.
In an embodiment, the obtaining, based on the pop-up process video, a time-displacement association relationship of the card holder in the card holder pop-up process and a time-displacement association relationship of the thimble includes:
reading each frame image and sampling time in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
In summary, according to the terminal device provided by the application, the time-displacement association relationship of the card holder and the time-displacement association relationship of the thimble are obtained through the video of the card holder ejecting process, and the ejecting force of the thimble to the card holder is obtained based on the time-displacement relationship of the card holder and the thimble. By the method, parameters influencing the mechanical index of the card holder can be separated, so that main factors influencing the mechanical performance of the intelligent card mounting mechanism are accurately verified, and a large amount of test verification and production cost are saved. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
In one embodiment, a non-transitory computer readable storage medium is provided, having stored thereon a computer program that when executed by a processor, performs the steps of: acquiring a pop-up process video in a card support pop-up process; based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble; and obtaining a critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector at the critical moment on the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support, wherein the critical point refers to a position where a flange of the card support is over against a flange of the card seat elastic sheet.
In an embodiment, the obtaining a time-displacement association relationship of the card holder in the card holder ejecting process and a time-displacement association relationship of the thimble based on the ejecting process video includes:
reading each frame image and sampling moment in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
In summary, according to the non-transitory computer-readable storage medium provided by the present application, the time-displacement association relationship of the card holder and the time-displacement association relationship of the thimble are obtained through the video of the card holder ejection process, and the ejection force to the card holder is obtained based on the time-displacement relationship of the card holder and the thimble. The method can separate parameters influencing the mechanical index of the card support, thereby realizing the precise verification of main factors influencing the mechanical performance of the mounting mechanism of the intelligent card and avoiding a large amount of test verification and production cost. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
In one embodiment, a computer program product is provided, the instructions in which, when executed by a processor of a terminal device, enable the terminal device to perform the steps of: acquiring a pop-up process video in a card support pop-up process; based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble; and obtaining a critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector pin at the critical moment on the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support, wherein the critical point refers to a position where the flange of the card support is over against the flange of the card seat elastic sheet.
In an embodiment, the obtaining a time-displacement association relationship of the card holder in the card holder ejecting process and a time-displacement association relationship of the thimble based on the ejecting process video includes:
reading each frame image and sampling moment in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
In conclusion, the time-displacement association relation of the card support and the time-displacement association relation of the thimble are obtained through the video of the card support ejecting process, and the ejecting force of the card support is obtained based on the time-displacement relation of the card support and the thimble. The method can separate parameters influencing the mechanical index of the card holder, thereby realizing accurate verification of main factors influencing the mechanical performance of the intelligent card mounting mechanism and avoiding a large amount of test verification and production cost. Meanwhile, the problem of calculation errors of ejection force in the prior art is solved.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. Any reference to memory, databases, or other media used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM is available in many forms, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), and the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A mechanical property measuring method of an intelligent card mounting structure of communication equipment is characterized in that the intelligent card mounting structure comprises a card support, a card seat elastic sheet, a PCB and a shell material, and the mechanical property measuring method of the intelligent card mounting structure of the communication equipment comprises the following steps:
acquiring a pop-up process video in a card support pop-up process;
based on the popping process video, obtaining a time-displacement incidence relation of the card support in the card support popping process and a time-displacement incidence relation of the thimble;
obtaining a critical moment when the card support reaches a critical point in the ejection process based on the time-displacement incidence relation of the card support, obtaining the ejection force of the ejector at the critical moment aiming at the card support according to the time-displacement incidence relation of the card support in the ejection process of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod,
the critical point refers to the position where the flange of the card support is over against the flange of the card seat elastic sheet.
2. The method according to claim 1, wherein obtaining the time-displacement association relationship of the card holder in the card holder ejecting process and the time-displacement association relationship of the thimble based on the ejecting process video comprises:
reading each frame image and sampling time in the pop-up process video;
identifying pixel points of the card holder and pixel points of the thimble from each frame of image;
and respectively obtaining the time-displacement association relation of the card holder and the time-displacement association relation of the thimble according to the sampling time of each frame of image, the pixel point of the card holder and the pixel point of the thimble.
3. The method according to claim 1 or 2, wherein the obtaining a critical time when the card holder reaches a critical point based on the time-displacement correlation of the card holder, and obtaining a pushing force of the jack at the critical time against the card holder according to the time-displacement correlation of the card holder during a card holder ejecting process, the time-displacement correlation of the ejector pin, and the rigidity of the ejector rod comprises:
and acquiring the time when the acceleration of the card support is 0 based on the time-displacement incidence relation of the card support, wherein the time when the acceleration of the card support is 0 is the critical time when the card support reaches the critical point.
4. The method according to claim 1 or 2, wherein after obtaining the time-displacement association relationship of the card holder in the card holder ejection process and the time-displacement association relationship of the thimble based on the ejection process video, the method further comprises:
and obtaining the deceleration moment when the card support reaches the deceleration stage based on the time-displacement incidence relation of the card support, and obtaining the friction force borne by the card support at the deceleration moment according to the time-displacement incidence relation of the card support in the deceleration process of the card support, the mass of the card support and the mass of the smart card.
5. The method according to claim 4, wherein obtaining a deceleration moment when the card holder reaches a deceleration stage based on a time-displacement association relationship of the card holder, and obtaining a friction force received by the card holder at the deceleration moment according to the time-displacement association relationship of the card holder, a card holder mass and a smart card mass in a deceleration process of the card holder, comprises:
and obtaining the time when the acceleration of the card holder is less than 0 based on the time-displacement association relation of the card holder, wherein the time when the acceleration of the card holder is less than 0 is the deceleration time when the card holder reaches the deceleration stage.
6. The method according to claim 1 or 2, wherein after obtaining the time-displacement association relationship of the card holder in the card holder ejection process and the time-displacement association relationship of the thimble based on the ejection process video, the method further comprises:
and obtaining the acceleration section moment after the card support passes through the critical point based on the critical moment and the deceleration moment, and obtaining the ejection force of the elastic sheet at the acceleration moment to the card support according to the time-displacement association relation of the card support in the card support acceleration process, the card support mass and the mass of the smart card.
7. The method according to claim 6, wherein an acceleration period time after the card holder passes a critical point is obtained based on the critical time and the deceleration time, and a pop-up force of the shrapnel at the acceleration time to the card holder is obtained according to a time-displacement association relationship of the card holder, a card holder mass, and a mass of the smart card during acceleration of the card holder, and the method comprises:
and obtaining the acceleration of the card support passing through the critical point at the acceleration moment greater than 0 based on the time-displacement association relation of the card support.
8. A mechanical property measurement system of a smart card mounting structure of a communication device, comprising:
the video acquisition module is used for acquiring a pop-up process video in the card holder pop-up process;
the relation generation module is used for obtaining the time-displacement incidence relation of the card support in the card support ejecting process and the time-displacement incidence relation of the thimble based on the ejecting process video;
and the ejection force calculation module is used for obtaining the critical moment when the card support reaches a critical point based on the time-displacement incidence relation of the card support, and obtaining the ejection force of the ejector at the critical moment aiming at the card support according to the time-displacement incidence relation of the card support, the time-displacement incidence relation of the ejector pin and the rigidity of the ejection rod in the ejection process of the card support.
9. A terminal device, comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a set of codes, or a set of instructions, and the instruction, the program, the set of codes, or the set of instructions is loaded and executed by the processor to implement the method for measuring mechanical properties of a smart card mounting structure of a communication device according to any one of claims 1 to 7.
10. A computer program product, characterized in that instructions in the computer program product, when executed by a processor of a terminal device, enable the terminal device to perform the method for measuring mechanical properties of a smart card mounting structure of a communication device according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211129882.2A CN115468691A (en) | 2022-09-16 | 2022-09-16 | Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment |
| PCT/CN2022/142150 WO2024055468A1 (en) | 2022-09-16 | 2022-12-27 | Method and system for measuring mechanical properties of smart card installation structure of communication device |
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| CN202211129882.2A CN115468691A (en) | 2022-09-16 | 2022-09-16 | Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment |
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| CN202211129882.2A Pending CN115468691A (en) | 2022-09-16 | 2022-09-16 | Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024055468A1 (en) * | 2022-09-16 | 2024-03-21 | 闻泰通讯股份有限公司 | Method and system for measuring mechanical properties of smart card installation structure of communication device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843221A (en) * | 1986-07-26 | 1989-06-27 | Daiichi Denshi Kogyo Kabushiki Kaisha | Electronic card receiving device |
| CN202977922U (en) * | 2012-12-03 | 2013-06-05 | 北京小米科技有限责任公司 | SIM card stand and mobile terminal |
| CN105827263A (en) * | 2015-08-31 | 2016-08-03 | 维沃移动通信有限公司 | Card support automatic ejection device and electronic equipment |
| US20170070002A1 (en) * | 2015-09-08 | 2017-03-09 | Apple Inc. | Sim card connector with integrated ejection mechanism |
| CN110416859A (en) * | 2019-08-07 | 2019-11-05 | Oppo（重庆）智能科技有限公司 | Kato liftout attachment and method |
| CN216598231U (en) * | 2022-01-18 | 2022-05-24 | 闻泰通讯股份有限公司 | sim card mounting device |
| CN115468691A (en) * | 2022-09-16 | 2022-12-13 | 闻泰通讯股份有限公司 | Method and system for measuring mechanical characteristics of smart card mounting structure of communication equipment |
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- 2022-09-16 CN CN202211129882.2A patent/CN115468691A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024055468A1 (en) * | 2022-09-16 | 2024-03-21 | 闻泰通讯股份有限公司 | Method and system for measuring mechanical properties of smart card installation structure of communication device |
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