CN114646559A - Method and device for detecting service life of connector, electronic equipment and storage medium - Google Patents
Method and device for detecting service life of connector, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the application provides a detection method and device for the service life of a connector, electronic equipment and a storage medium, the detection of the service life of the connector is realized, and compared with the situation that the service life of the connector is obtained through a simulation test when the connector leaves a factory or one service life is provided for the connector of one model, the actual vibration intensity and the percentage of each specified duty ratio of the connector to be detected in the actual working process are respectively acquired, the service life can be independently measured for each connector, the actual working process of the connector to be detected is considered, and the detection result of the service life is more accurate.
Description
Technical Field
The present disclosure relates to the field of mechanical technologies, and in particular, to a method and an apparatus for detecting a service life of a connector, an electronic device, and a storage medium.
Background
With the continuous and rapid development of mobile communication technology, 5G (5 th generation mobile communication system) will promote a new revolution of mobile communication technology and industry due to the characteristics of high speed, low latency and high capacity. Simultaneously, along with the promotion of 5G basic station class product processing data volume, the heat that produces in the course of the work also can increase, and this has also promoted the requirement to the heat dissipation, and 5G basic station class product introduction high rotational speed fan has also become inevitable.
The high-speed fan is as the necessary corollary component of 5G basic station class product, and the life who detects the connector of high-speed fan is significant to the normal use of equipment such as maintenance 5G basic station, and the connector is easily influenced by external operational environment and operating condition, and as the connector of high-speed fan, must be under long-term work high frequency micro-vibration's environment. Therefore, how to detect the service life of the connector becomes a problem to be solved urgently.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method and an apparatus for detecting a service life of a connector, an electronic device, and a storage medium, so as to detect the service life of the connector. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a method for detecting a service life of a connector, where the method includes:
acquiring the abrasion speed corresponding to the material type of a corrosion-resistant coating to be detected of a connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected and the intercept of the corrosion-resistant coating to be detected;
respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process, and determining the percentage of each specified duty ratio in the total service time;
and calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
In a possible embodiment, the acquiring the wear rate corresponding to the material type of the corrosion-resistant coating to be detected of the connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected, and the intercept of the corrosion-resistant coating to be detected includes:
acquiring the material type of a to-be-detected corrosion-resistant coating of the to-be-detected connector to obtain a target material type;
determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected under the condition that the target material type comprises at least two materials;
and taking the abrasion speed and the intercept of the sample corrosion-resistant coating of the sample connector which is in the same type as the connector to be detected and is measured in advance as the abrasion speed and the intercept of the corrosion-resistant coating to be detected.
In a possible embodiment, in the case that the target material type includes at least two materials, determining an initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected includes:
under the condition that the target material type comprises at least two materials, respectively acquiring the hardness and the thickness of each material in the corrosion-resistant coating to be detected, and determining a reference material in each material;
for each other material except the reference material in the materials, calculating the relative hardness of the other material relative to the reference material according to the hardness of the other material and the hardness of the reference material;
calculating the relative thickness of each other material except the reference material according to the thickness and relative hardness of the other material;
and determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the relative thicknesses and the thickness of the reference material.
In one possible embodiment, the method further comprises:
acquiring the initial equivalent thickness of the sample corrosion-resistant coatings of a plurality of sample connectors of the same type as the connector to be detected;
measuring the sample vibration intensity of each sample connector under a specified working condition and the residual equivalent thickness of each sample corrosion-resistant coating;
and obtaining the abrasion speed and intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample.
In one possible embodiment, the measuring the sample vibration intensity and the remaining equivalent thickness of each sample corrosion-resistant coating of each sample connector under the specified working condition comprises:
determining the working condition when the vibration intensity of the sample connector is maximum for each sample connector, and taking the working condition as the designated working condition of the sample connector;
for each sample connector, the sample connector was measured for its sample vibration severity under its specified operating conditions and the remaining equivalent thickness of the sample corrosion resistant coating of the sample connector.
In a possible embodiment, the obtaining the wear rate and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample comprises:
according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample, the following formula is adopted:
LnD＝μLnV+ε
and calculating the abrasion speed and the intercept of the sample corrosion-resistant coating, wherein D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion speed and the intercept are calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
In a possible implementation manner, the calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity at each specified duty ratio, and the percentage of each specified duty ratio to the total service time to obtain the service life of the connector to be detected includes:
according to the abrasion speed, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio in the total service time, the method is characterized by comprising the following steps:
calculating the service life of the corrosion-resistant coating to be detected to obtain the service life of the connector to be detected, wherein theta is the service life of the corrosion-resistant coating to be detected, and alpha isiFor the ith specified duty cycle as a percentage of the total time used,
is the wear rate, V, of the corrosion-resistant coating to be detectediFor the actual vibration intensity at the ith specified duty cycle,
is the intercept of the corrosion-resistant coating to be detected, DinitialAnd the initial equivalent thickness of the corrosion-resistant coating to be detected.
In a second aspect, an embodiment of the present application provides an apparatus for detecting a service life of a connector, where the apparatus includes:
the device comprises a to-be-detected parameter acquisition module, a detection module and a parameter acquisition module, wherein the to-be-detected parameter acquisition module is used for acquiring the abrasion speed corresponding to the material type of a to-be-detected corrosion-resistant coating of a to-be-detected connector, the initial equivalent thickness of the to-be-detected corrosion-resistant coating and the intercept of the to-be-detected corrosion-resistant coating;
the actual vibration intensity acquisition module is used for respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process and determining the percentage of each specified duty ratio in the total service time;
and the service life determining module is used for calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
In a possible implementation manner, the to-be-detected parameter obtaining module includes:
the target material type acquisition submodule is used for acquiring the material type of the to-be-detected corrosion-resistant coating of the to-be-detected connector to obtain the target material type;
the initial equivalent thickness determining submodule is used for determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected under the condition that the target material type comprises at least two materials;
and the wear speed determining submodule is used for taking the wear speed and the intercept of the sample corrosion-resistant coating of the sample connector which is in the same type as the connector to be detected and is measured in advance as the wear speed and the intercept of the corrosion-resistant coating to be detected.
In a possible embodiment, the initial equivalent thickness determination submodule is specifically configured to:
under the condition that the target material type comprises at least two materials, respectively acquiring the hardness and the thickness of each material in the corrosion-resistant coating to be detected, and determining a reference material in each material;
for each other material except the reference material in the materials, calculating the relative hardness of the other material relative to the reference material according to the hardness of the other material and the hardness of the reference material;
calculating the relative thickness of each other material except the reference material according to the thickness and relative hardness of the other material;
and determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the relative thicknesses and the thickness of the reference material.
In a possible embodiment, the apparatus further comprises:
the sample parameter acquisition module is used for acquiring the initial equivalent thickness of the sample corrosion-resistant coatings of a plurality of sample connectors of the same type as the connector to be detected;
the sample parameter measuring module is used for measuring the sample vibration intensity of each sample connector under the specified working condition and the residual equivalent thickness of each sample corrosion-resistant coating;
and the sample parameter calculation module is used for obtaining the abrasion speed and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample.
In a possible implementation manner, the sample parameter measuring module is specifically configured to:
determining the working condition when the vibration intensity of the sample connector is maximum for each sample connector, and taking the working condition as the designated working condition of the sample connector;
for each sample connector, the sample connector was measured for its sample vibration severity under its specified operating conditions and the remaining equivalent thickness of the sample corrosion resistant coating of the sample connector.
In a possible implementation manner, the sample parameter calculation module is specifically configured to:
according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample, the following formula is adopted:
LnD＝μLnV+ε
and calculating the abrasion speed and the intercept of the sample corrosion-resistant coating, wherein D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion speed and the intercept are calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
In a possible implementation, the service life determining module is specifically configured to:
according to the abrasion speed, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio in the total service time, the method is characterized by comprising the following steps:
calculating the service life of the corrosion-resistant coating to be detected to obtain the service life of the connector to be detected, wherein theta is the service life of the corrosion-resistant coating to be detected, and alpha isiFor the ith specified duty cycle as a percentage of the total time used,
is the wear rate, V, of the corrosion-resistant coating to be detectediFor the actual vibration intensity at the ith specified duty cycle,
is the intercept of the corrosion-resistant coating to be detected, DinitialAnd the initial equivalent thickness of the corrosion-resistant coating to be detected.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to implement the method for detecting the service life of the connector according to any one of the present applications when executing the program stored in the memory.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method for detecting the service life of a connector according to any of the present application is implemented.
The embodiment of the application has the following beneficial effects:
the method, the device, the electronic equipment and the storage medium for detecting the service life of the connector provided by the embodiment of the application acquire the wear speed corresponding to the material type of the corrosion-resistant coating to be detected of the connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected and the intercept of the corrosion-resistant coating to be detected; respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process, and determining the percentage of each specified duty ratio in the total service time; and calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected. The detection of the service life of the connector is realized, the service life of the connector is obtained through simulation test when the connector is delivered from a factory or one service life is provided for the connector of one model, the actual vibration intensity and the percentage of each specified duty ratio of the connector to be detected in the actual working process are acquired, the service life of each connector can be measured independently, the actual working process of the connector to be detected is considered, and the detection result of the service life is more accurate. Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a method for detecting a service life of a connector according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a specific implementation manner of step S101 in the embodiment of the present application;
FIG. 3 is a schematic diagram of a method of measuring the wear rate and intercept of the sample corrosion-resistant plating of the sample connector in an embodiment of the present application;
FIG. 4 is a schematic view of a device for detecting the service life of a connector according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to detect the service life of the connector, the cause of the connector failure is analyzed, the electrical contact failure is one of the main failure modes of the connector, and the contact resistance is overlarge or the contact resistance rises to exceed a certain threshold value, so that the main cause of the electrical contact failure of the connector is determined. Wherein the high frequency vibration environmental stress is a key cause of electric contact failure. Under vibrational stress, the contact portions of the electrical connector move relative to each other, causing wear, resulting in a gradual reduction of the corrosion-resistant plating and eventually exposing the substrate layer, whose contact resistance increases gradually in this irreversible process until a threshold is reached, resulting in a failure of the electrical contact of the connector.
The connector of the fan of the base station product continuously receives mechanical stress in the using process, relative motion exists between a contact pin and a socket of the connector, abrasion exists at a contact point, so that the corrosion-resistant plating of the contact point is gradually reduced, and finally a basal layer is exposed. The contact resistance increases in steps in this irreversible process until a threshold value is reached, eventually manifesting itself as a failure of the electrical connection. Since the entire process is irreversible, the corrosion-resistant plating thickness can be selected as a degradation parameter, and when it is 0, the connector is considered to have been unable to be used reliably, i.e., a failed connector.
Based on the above research, the present application provides a method for detecting a service life of a connector, referring to fig. 1, the method includes:
s101, acquiring the abrasion speed corresponding to the material type of the corrosion-resistant coating to be detected of the connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected and the intercept of the corrosion-resistant coating to be detected.
The method for detecting the service life of the connector can be realized through electronic equipment, and the connector to be detected is any connector needing to be detected. In an example, the electronic device may be a base station device, and the connector to be detected is a connector of a fan in the base station device.
The corrosion-resistant coating to be detected refers to a corrosion-resistant coating of a contact point of the connector to be detected. The wear rate of the corrosion-resistant coating can be understood as the wear thickness of the corrosion-resistant coating per unit of time per unit of vibration intensity. The wear rate corresponding to the material type of the corrosion-resistant coating to be detected can be obtained by measuring the actual wear rate of the corrosion-resistant coating of the same material type in advance, and the initial equivalent thickness of the corrosion-resistant coating to be detected and the intercept of the corrosion-resistant coating to be detected can be obtained by measuring. When the corrosion-resistant coating comprises only one material, the initial equivalent thickness of the corrosion-resistant coating is the current actual thickness of the corrosion-resistant coating. When the corrosion-resistant plating layer includes at least two materials, it is necessary to calculate the initial equivalent thickness of the corrosion-resistant plating layer according to the hardness and thickness of each material.
And S102, respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process, and determining the percentage of each specified duty ratio in the total service time.
The connector to be detected does not work with the same power all the time in the actual working process, but works with different duty ratios, for example, taking the connector in the base station equipment as an example, when the heat generated by the base station equipment with larger data transmission quantity is more, the duty ratio of the connector for the fast rotation speed of the fan is correspondingly larger; and when the base station equipment has less data transmission quantity and generates less heat, the duty ratio of the connector with the slow rotating speed of the fan is correspondingly smaller. Each duty ratio of the connector to be detected in the designated period in the actual working process can be obtained and used as each designated duty ratio of the connector to be detected, and of course, an average value in a plurality of periods can also be calculated. After each specified duty ratio of the connector to be detected is obtained, the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process can be obtained.
In addition, the percentage of each designated duty ratio in the total used time, that is, the percentage of each designated duty ratio in the designated cycle time, needs to be obtained. For example, when the time of the designated duty ratio a of the connector to be tested is measured to be 25 hours, the time of the designated duty ratio B of the connector to be tested is measured to be 30 hours, and the time of the designated duty ratio B of the connector to be tested is measured to be 45 hours, the percentage of the designated duty ratio a to the total service time is 25/100-0.25, the percentage of the designated duty ratio B to the total service time is 30/100-0.3, and the percentage of the designated duty ratio C to the total service time is 45/100-0.45.
And S103, calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
The wear thickness of the corrosion-resistant coating to be detected in unit time under each specified duty ratio can be respectively calculated according to the wear speed and intercept of the corrosion-resistant coating to be detected and the actual vibration intensity under each specified duty ratio. And then calculating the service life of the connector to be detected according to the abrasion thickness of the corrosion-resistant coating to be detected in unit time under the specified duty ratio, the percentage of each specified duty ratio in the total service time and the initial equivalent thickness of the corrosion-resistant coating to be detected.
In the embodiment of the application, the detection of the service life of the connector is realized, and compared with the service life of the connector obtained through simulation test in factory shipment or the service life of the connector provided for one model, the service life of the connector to be detected is obtained by acquiring the actual vibration intensity and the percentage of each specified duty ratio in the actual working process of the connector to be detected to the total service time, the service life of each connector can be independently measured, the actual working process of the connector to be detected is considered, and the detection result of the service life is more accurate.
In a possible embodiment, referring to fig. 2, the acquiring of the wear rate corresponding to the material type of the corrosion-resistant plating to be detected of the connector to be detected, the initial equivalent thickness of the corrosion-resistant plating to be detected, and the intercept of the corrosion-resistant plating to be detected includes:
s1011, obtaining the material type of the corrosion-resistant coating to be detected of the connector to be detected, and obtaining the target material type.
And S1012, under the condition that the target material types comprise at least two materials, determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected.
In one example, the initial equivalent thickness of the corrosion-resistant coating to be tested can be calculated using the Archard model of adhesive wear, as follows.
Wherein Q is the abrasion loss, K is the coefficient of adhesive wear, determined according to the type of friction, the friction temperature, the lubrication; l is the sliding distance; h is the Brinell hardness value of the material; w is normal phase load, namely external normal phase force applied during working.
As can be seen from the formula (1), the amount of wear is inversely proportional to the material hardness H. In the case where the connector and its environment of use are consistent, it can be assumed that K and L are consistent, and the initial thickness of the corrosion-resistant plating to be detected can be equivalent to the thickness of a certain material, depending on the hardness and thickness of the various materials.
In a possible embodiment, in the case that the target material type includes at least two materials, determining an initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected includes:
step one, under the condition that the target material type comprises at least two materials, the hardness and the thickness of each material in the corrosion-resistant coating to be detected are respectively obtained, and a reference material is determined in each material.
The reference material for detecting the corrosion-resistant plating should be the same as that used when the wear rate of the sample corrosion-resistant plating is measured in advance.
And secondly, calculating the relative hardness of each other material except the reference material relative to the reference material according to the hardness of the other material and the hardness of the reference material.
And step three, calculating the relative thickness of each other material except the reference material relative to the reference material according to the thickness and relative hardness of the other materials.
And step four, determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the relative thicknesses and the thickness of the reference material.
Assuming that the target material type includes material 1-material N, N materials, the hardness of material 1-material N is H1-HNThe thicknesses of the material 1 to the material N are Th respectively1-ThNThe reference material is a material M, wherein N is an integer greater than 1, M is less than or equal to N, and M is a positive integer. Then for the ith material, 1 ≦ i ≦ N, and its relative hardness with respect to the reference material (material M) may be expressed as
Its relative thickness with respect to the reference material (material M) can be expressed as
The initial equivalent thickness of the corrosion-resistant coating to be detected can finally be expressed as:
wherein ThEThe initial equivalent thickness of the corrosion-resistant coating to be tested is indicated.
For example, in the case of a gold nickel plating, the Brinell hardness value of gold is 20 and the Brinell hardness value of nickel is 80. The original plating thickness and the measured residual thickness after the test can be converted into the equivalent nickel layer thickness by the following calculation method:
wherein ThEIs the initial equivalent thickness, ThAuIs the thickness of gold plating layer, ThNiIs the thickness of the nickel coating, HAuBrinell hardness, H, of goldNiIs the brinell hardness value of nickel.
In one example, when the target material type of the corrosion-resistant coating to be detected contains only one material, the initial equivalent thickness of the corrosion-resistant coating to be detected is the current actual thickness of the corrosion-resistant coating. For example, the average thickness of each corrosion-resistant plating of the connector can be measured using a grinder to grind the connector pins to the contact point locations.
And S1013, taking the abrasion speed and the intercept of the sample corrosion-resistant coating of the sample connector which is pre-measured and has the same type as the connector to be detected as the abrasion speed and the intercept of the sample corrosion-resistant coating to be detected.
In the following, a method for measuring the wear rate and intercept of a sample corrosion-resistant coating of a sample connector is described, which in one possible embodiment, with reference to fig. 3, further comprises:
s301, obtaining the initial equivalent thickness of the sample corrosion-resistant coatings of a plurality of sample connectors of the same type as the connector to be detected.
The sample corrosion-resistant coating of the sample connector is the same as the material type of the corrosion-resistant coating to be detected of the connector to be detected. The obtaining method of the initial equivalent thickness of the corrosion-resistant coating of each sample can be referred to the obtaining method of the corrosion-resistant coating to be detected, and details are not repeated here.
And S302, measuring the sample vibration intensity of each sample connector under the specified working condition and the residual equivalent thickness of each sample corrosion-resistant coating.
The designated working conditions can be set in a self-defined mode according to actual conditions, in one example, in order to accelerate the testing speed, fans with poor dynamic balance can be selected, and the rotating speed of the fans with the strongest vibration under different rotating speeds is determined by using the acceleration sensor. And measuring the sample vibration intensity and the residual equivalent thickness of the sample corrosion-resistant coating at the rotating speed with the strongest vibration. In one possible embodiment, the measuring the vibration intensity of the sample and the remaining equivalent thickness of the corrosion-resistant coating of each sample connector under the specified working condition comprises:
step one, determining the working condition when the vibration intensity of the sample connector is maximum for each sample connector, and taking the working condition as the designated working condition of the sample connector.
For example, if the sample connector has the greatest vibration intensity at a duty cycle of 70%, the duty cycle is 70%, and the sample connector is in the designated operating condition.
And step two, measuring the sample vibration intensity of each sample connector under the specified working condition of the sample connector and the residual equivalent thickness of the sample corrosion-resistant coating of the sample connector.
The vibration severity can be expressed in terms of equivalent velocity stress, and in one example, can be expressed in terms of the Von Mises equivalent stress criterion:
wherein σeqIs an equivalent stress, σxxIs the first principal stress, σyyIs the second principal stress, σzzIs a third principal stress; sigmaxyIs the partial stress component, σ, of the first principal stress and the second principal stresszxIs the partial stress component, σ, of the first principal stress and the third principal stressyzIs the bias stress component of the second principal stress and the third principal stress.
The equivalent stresses are set to be independent of each other in the directions of 3 axes, and the above formula (3) can be simplified as follows:
wherein, VeqIs the equivalent velocity stress, VxIs the first principal stress, VyIs the second principal stress, VzIs the third principal stress.
In the embodiment of the application, the working condition when the vibration intensity is maximum is selected as the designated working condition of the sample connector, so that the measurement time of the data of the sample connector can be shortened, and the time cost is saved.
And S303, obtaining the abrasion speed and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample.
After the residual equivalent thickness of each sample corrosion-resistant coating under each sample vibration intensity is obtained, a wear model can be established and parameter estimation can be carried out. A simplified calculation method based on abrasive wear comprises the following steps:
γ＝PFaVb (5)
wherein γ is the wear rate; p is the abrasive wear coefficient; f is the load, i.e. the external stress between the friction pairs; v is the sample vibration intensity; and a and b are constant parameters to be estimated.
Under the condition that the connector models are the same, the insertion and extraction forces are consistent, and the materials are consistent, a linear model of the thickness of the abrasion material and the vibration intensity (speed) can be established for the condition that the interfaces are consistent:
LnD＝μLnV+ε (6)
and D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion equivalent thickness is calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
According to equation (6), linear regression can be applied to obtain the estimated values of the model parameters after ln is taken.
In a possible embodiment, the obtaining of the wear rate and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of each sample corrosion-resistant coating, the remaining equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample comprises:
according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample, the following formula is adopted:
LnD＝μLnV+ε
and calculating the abrasion speed and the intercept of the sample corrosion-resistant coating, wherein D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion speed and the intercept are calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
In a possible implementation manner, the calculating the service life of the corrosion-resistant plating layer to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity at each specified duty ratio, and the percentage of each specified duty ratio to the total service time to obtain the service life of the connector to be detected includes:
according to the abrasion speed, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio in the total service time, the method is characterized by comprising the following formula:
calculating the service life of the corrosion-resistant coating to be detected to obtain the service life of the connector to be detected, wherein theta is the service life of the corrosion-resistant coating to be detected, and alpha isiFor the ith specified duty cycle as a percentage of the total time used,
for the rate of wear, V, of the corrosion-resistant coating to be detectediFor the actual vibration intensity at the ith specified duty cycle,
intercept for the corrosion-resistant coating to be detected, DinitialThe initial equivalent thickness of the corrosion-resistant coating to be detected is shown.
In order to more clearly describe the method for detecting the service life of the connector of the present application, the following description is made by way of example.
And testing the vibration condition of the connector position of a target high-speed fan under the condition of different duty ratios, and recording. In the working process of the whole machine, when the duty ratio of a connector is 20%, the vibration intensity is 0.13 mm/s; when the duty ratio is 70%, the vibration intensity is 0.34 mm/s; the remaining duty cycle data is not described in detail. And measuring the initial plating thickness of each position of the connector of the high-speed fan, and measuring the average plating thickness after grinding the electric connector by using a grinder. The plating layer is composed of gold and nickel, the initial equivalent thickness of the plating layer is calculated, the gold thickness is 0.6 mu m, and the nickel thickness is 1.85 mu m. According to the formula (2), nickel having an equivalent thickness of 2 μm can be obtained.
The high-speed fans with the same type and poor dynamic balance are selected for acceleration tests, and through measurement, the high-speed fans with the poor dynamic balance vibrate most strongly at the duty ratio of 75%, and the vibration is 2.76 mm/s. The vibration at 50% duty cycle was 1.86 mm/s. Several samples were selected for accelerated life testing over a period of 30 days, and the wear thickness was measured at different duty cycles.
Regression fitting was performed on formula (6) LnD ═ μ LnV + epsilon. That is, let y be LnD and x be LnV, (6) can be converted into a general linear equation:
wherein,
and
is the parameter to be estimated.
Introducing a mark:
from the least squares estimation, one can obtain:
further, take σ2＝Var(yi):
And (3) performing regression analysis on the original data of the acceleration test, and obtaining the wear speed and intercept of the sample corrosion-resistant coating according to (8) to (10), namely the wear speed and intercept of the corrosion-resistant coating to be detected:
according to the following formula:
the duty ratio of the connector to be detected of the high-speed fan to be detected is 20% when the duty ratio is 50%, the duty ratio of the connector to be detected is 70% when the duty ratio is 50%, and according to evaluation, the fact that the connector to be detected of the high-speed fan to be detected can work for at least 5.9 years under the condition that the confidence coefficient is 90% in the scene can be obtained.
Wherein L isxx、Lyy、LxyDenotes the notation used for the calculation, n denotes the number of sample connectors, xiRepresenting the value of x for the ith sample connector,
means, y, representing the mean of the x values of the n sample connectorsiRepresents the y value of the ith sample connector,
representing the mean, σ, of the y values of the n sample connectors2Represents the variance of the ith sample connector y value,
to represent
And
var () denotes the variance of the element in brackets, αiThe percentage of the ith specified duty cycle of the connector to be tested to the total time of use,
to detect the rate of wear of the corrosion-resistant coating, ViThe actual vibration intensity of the connector to be detected under the ith specified duty ratio is determined,
is the intercept of the corrosion-resistant coating to be detected.
A device for detecting the service life of a connector, see fig. 4, the device comprising:
the detection parameter acquiring module 11 is configured to acquire a wear rate corresponding to a material type of a to-be-detected corrosion-resistant coating of the to-be-detected connector, an initial equivalent thickness of the to-be-detected corrosion-resistant coating, and an intercept of the to-be-detected corrosion-resistant coating;
an actual vibration intensity obtaining module 12, configured to obtain actual vibration intensities of the to-be-detected connector at the specified duty ratios in an actual working process, and determine percentages of the specified duty ratios in total service time;
and the service life determining module 13 is configured to calculate the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity at each specified duty ratio, and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
In a possible implementation manner, the module for acquiring parameters to be detected includes:
the target material type acquisition submodule is used for acquiring the material type of the corrosion-resistant coating to be detected of the connector to be detected to obtain the target material type;
the initial equivalent thickness determining submodule is used for determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected under the condition that the target material type comprises at least two materials;
and the wear speed determining submodule is used for taking the wear speed and the intercept of the sample corrosion-resistant coating of the sample connector which is in the same type as the connector to be detected and is measured in advance as the wear speed and the intercept of the corrosion-resistant coating to be detected.
In a possible implementation, the initial equivalent thickness determining submodule is specifically configured to:
under the condition that the target material type comprises at least two materials, respectively acquiring the hardness and the thickness of each material in the corrosion-resistant coating to be detected, and determining a reference material in each material;
for each other material except the reference material in the materials, calculating the relative hardness of the other material relative to the reference material according to the hardness of the other material and the hardness of the reference material;
calculating the relative thickness of each other material except the reference material according to the thickness and relative hardness of the other material;
and determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the relative thicknesses and the thickness of the reference material.
In a possible embodiment, the above apparatus further comprises:
the sample parameter acquisition module is used for acquiring the initial equivalent thickness of the sample corrosion-resistant coatings of the sample connectors with the same type as the connector to be detected;
the sample parameter measuring module is used for measuring the sample vibration intensity of each sample connector under the specified working condition and the residual equivalent thickness of each sample corrosion-resistant coating;
and the sample parameter calculation module is used for obtaining the abrasion speed and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample.
In a possible implementation manner, the sample parameter measuring module is specifically configured to:
determining the working condition when the vibration intensity of the sample connector is maximum for each sample connector, and taking the working condition as the designated working condition of the sample connector;
for each sample connector, the sample vibration severity of the sample connector under its specified operating conditions and the remaining equivalent thickness of the sample corrosion resistant coating of the sample connector were measured.
In a possible implementation manner, the sample parameter calculation module is specifically configured to:
according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample, the following formula is adopted:
LnD＝μLnV+ε
and calculating the abrasion speed and the intercept of the sample corrosion-resistant coating, wherein D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion speed and the intercept are calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
In a possible implementation, the service life determining module is specifically configured to:
according to the abrasion speed, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio in the total service time, the method is characterized by comprising the following formula:
calculating the service life of the corrosion-resistant coating to be detected to obtain the service life of the connector to be detected, wherein theta is the service life of the corrosion-resistant coating to be detected, and alpha isiFor the ith specified duty cycle as a percentage of the total time used,
for the rate of wear, V, of the corrosion-resistant coating to be detectediFor the actual vibration intensity at the ith specified duty cycle,
intercept of the corrosion-resistant coating to be detected, Dinitia;The initial equivalent thickness of the corrosion-resistant coating to be detected is obtained.
An embodiment of the present application further provides an electronic device, including: a processor and a memory;
the memory is used for storing computer programs;
the processor is used for realizing the method for detecting the service life of any connector when executing the computer program stored in the memory.
Optionally, referring to fig. 5, in addition to the processor 21 and the memory 23, the electronic device according to the embodiment of the present application further includes a communication interface 22 and a communication bus 24, where the processor 21, the communication interface 22, and the memory 23 complete mutual communication through the communication bus 24. In an example, the electronic device may specifically be a base station device.
The communication bus mentioned in the electronic device may be a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a RAM (Random Access Memory) or an NVM (Non-Volatile Memory), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor including a CPU (Central Processing Unit), an NP (Network Processor), and the like; but also a DSP (Digital Signal Processing), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method for detecting the service life of any connector is implemented.
In yet another embodiment provided by the present application, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform any of the above methods for detecting the useful life of a connector.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It should be noted that, in this document, the technical features in the various alternatives can be combined to form the scheme as long as the technical features are not contradictory, and the scheme is within the scope of the disclosure of the present application. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments of the apparatus, the electronic device, the computer program product and the storage medium, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to the partial description of the method embodiments for relevant points.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the scope of protection of the present application.
Claims (10)
1. A method for detecting a service life of a connector, the method comprising:
acquiring the abrasion speed corresponding to the material type of a corrosion-resistant coating to be detected of a connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected and the intercept of the corrosion-resistant coating to be detected;
respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process, and determining the percentage of each specified duty ratio in the total service time;
and calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
2. The method according to claim 1, wherein the obtaining of the abrasion speed corresponding to the material type of the corrosion-resistant coating to be detected of the connector to be detected, the initial equivalent thickness of the corrosion-resistant coating to be detected, and the intercept of the corrosion-resistant coating to be detected comprises:
acquiring the material type of a to-be-detected corrosion-resistant coating of the to-be-detected connector to obtain a target material type;
determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected under the condition that the target material type comprises at least two materials;
and taking the abrasion speed and the intercept of the sample corrosion-resistant coating of the sample connector which is in the same type as the connector to be detected and is measured in advance as the abrasion speed and the intercept of the corrosion-resistant coating to be detected.
3. The method according to claim 2, wherein in the case that the target material type comprises at least two materials, determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the coating thickness and hardness of each material in the corrosion-resistant coating to be detected comprises:
under the condition that the target material type comprises at least two materials, respectively acquiring the hardness and the thickness of each material in the corrosion-resistant coating to be detected, and determining a reference material in each material;
for each other material except the reference material in the materials, calculating the relative hardness of the other material relative to the reference material according to the hardness of the other material and the hardness of the reference material;
calculating the relative thickness of each other material except the reference material according to the thickness and relative hardness of the other material;
and determining the initial equivalent thickness of the corrosion-resistant coating to be detected according to the relative thicknesses and the thickness of the reference material.
4. The method according to any one of claims 1-3, further comprising:
acquiring the initial equivalent thickness of the sample corrosion-resistant coatings of a plurality of sample connectors of the same type as the connector to be detected;
measuring the sample vibration intensity of each sample connector under a specified working condition and the residual equivalent thickness of each sample corrosion-resistant coating;
and obtaining the abrasion speed and intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample.
5. The method of claim 4, wherein said measuring sample vibration severity and remaining equivalent thickness of each of said sample corrosion resistant coatings for each of said sample connectors under specified operating conditions comprises:
determining the working condition when the vibration intensity of the sample connector is maximum for each sample connector, and taking the working condition as the designated working condition of the sample connector;
for each sample connector, the sample connector was measured for its sample vibration severity under its specified operating conditions and the remaining equivalent thickness of the sample corrosion resistant coating of the sample connector.
6. The method of claim 4, wherein obtaining the wear rate and the intercept of the sample corrosion-resistant coating according to the initial equivalent thickness of the sample corrosion-resistant coating, the residual equivalent thickness of the sample corrosion-resistant coating and the vibration intensity of the sample comprises:
according to the initial equivalent thickness of each sample corrosion-resistant coating, the residual equivalent thickness of each sample corrosion-resistant coating and the vibration intensity of each sample, the following formula is adopted:
LnD＝μLnV+ε
and calculating the abrasion speed and the intercept of the sample corrosion-resistant coating, wherein D is the abrasion equivalent thickness of the sample corrosion-resistant coating, the abrasion speed and the intercept are calculated according to the initial equivalent thickness and the residual equivalent thickness of the sample corrosion-resistant coating, V is the vibration intensity of the sample, mu is the abrasion speed of the sample corrosion-resistant coating, and epsilon is the intercept of the sample corrosion-resistant coating.
7. The method according to claim 1, wherein the calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity at each specified duty ratio and the percentage of each specified duty ratio to the total service time to obtain the service life of the connector to be detected comprises:
according to the abrasion speed, the initial equivalent thickness and the intercept of the corrosion-resistant coating to be detected, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio in the total service time, the following formula is adopted:
calculating the service life of the corrosion-resistant coating to be detected to obtain the service life of the connector to be detected, wherein theta is the service life of the corrosion-resistant coating to be detected, and alpha isiFor the ith specified duty cycle as a percentage of the total time used,
the wear rate, V, of the corrosion-resistant coating to be detectediFor the actual vibration intensity at the ith specified duty cycle,
is the intercept of the corrosion-resistant coating to be detected, DinitialAnd the initial equivalent thickness of the corrosion-resistant coating to be detected.
8. A device for detecting the service life of a connector, said device comprising:
the device comprises a to-be-detected parameter acquisition module, a detection module and a parameter acquisition module, wherein the to-be-detected parameter acquisition module is used for acquiring the abrasion speed corresponding to the material type of a to-be-detected corrosion-resistant coating of a to-be-detected connector, the initial equivalent thickness of the to-be-detected corrosion-resistant coating and the intercept of the to-be-detected corrosion-resistant coating;
the actual vibration intensity acquisition module is used for respectively acquiring the actual vibration intensity of the connector to be detected under each specified duty ratio in the actual working process and determining the percentage of each specified duty ratio in the total service time;
and the service life determining module is used for calculating the service life of the corrosion-resistant coating to be detected according to the wear rate, the initial equivalent thickness, the intercept, the actual vibration intensity under each specified duty ratio and the percentage of each specified duty ratio to the total service time, so as to obtain the service life of the connector to be detected.
9. An electronic device comprising a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to implement the method for detecting the service life of the connector according to any one of claims 1 to 7 when executing the program stored in the memory.
10. A computer-readable storage medium, in which a computer program is stored, and the computer program is executed by a processor to implement the method for detecting the service life of a connector according to any one of claims 1 to 7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116776631A (en) * | 2023-07-05 | 2023-09-19 | 深圳市精微康投资发展有限公司 | Connector performance evaluation method and system based on data analysis |
| FR3145619A1 (en) * | 2023-02-06 | 2024-08-09 | Safran Electrical & Power | METHOD FOR EVALUATING THE RELIABILITY OF A CONNECTION BETWEEN ELECTRICAL CONTACTS |
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2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3145619A1 (en) * | 2023-02-06 | 2024-08-09 | Safran Electrical & Power | METHOD FOR EVALUATING THE RELIABILITY OF A CONNECTION BETWEEN ELECTRICAL CONTACTS |
| WO2024165808A1 (en) * | 2023-02-06 | 2024-08-15 | Safran Electrical & Power | Method for evaluating the reliability of a connection between electrical contacts |
| CN116776631A (en) * | 2023-07-05 | 2023-09-19 | 深圳市精微康投资发展有限公司 | Connector performance evaluation method and system based on data analysis |
| CN116776631B (en) * | 2023-07-05 | 2024-02-02 | 深圳市精微康投资发展有限公司 | Connector performance evaluation method and system based on data analysis |
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