An economical, lightweight, high-performance VNA connector and assembly method thereof

Abstract

The present invention relates to the field of high-frequency communication and radio frequency testing technology, and in particular to an assembly method for an economical, lightweight, high-performance VNA connector. The method includes analyzing the influence of the connection of the contact piece on the test result according to the actual test result; by real-time monitoring the contact pressure of the contact piece, determining whether there is an abnormal risk in the connection state of the contact piece according to the monitoring result, and real-time monitoring and analyzing the temperature change data of the connection when it is determined that there is an abnormal risk, and adjusting the gap distance according to the analysis result. The present invention monitors the gap between adjacent contacts in real time, performs electrical testing after assembly, records the test results, analyzes the influence of the connection of the contact piece on the test result, ensures that the performance of the connector meets the standard, and realizes automatic adjustment of the gap between adjacent contacts through a closed-loop feedback control system by real-time monitoring the temperature change of the connection, optimizes the gap adjustment strategy, and effectively improves the performance and reliability of the VNA connector.

Description

Technical Field

[0001] The present invention relates to the technical field of high-frequency communication and radio frequency testing, and in particular to an economical, lightweight, high-performance VNA connector and an assembling method thereof. Background Art

[0002] The VNA connector features a large threaded body and a unique threaded interface, which makes it more stable during test connection. The force during use is mainly concentrated on the threaded body part reinforced by the outer layer, which can effectively prevent the damage of the precision coaxial interface. It has the characteristics of high frequency bandwidth, high plug-in and pull-out times, corrosion resistance, etc., to protect the expensive instrument ports from wear and abnormal damage caused by frequent replacement of test cables. The wire end of the VNA connector is connected by contacting the outer conductor and inner conductor of the coaxial cable, and is professionally used with the network. The outer conductor and inner conductor of the cable are inserted into the outer conductor and inner conductor of the VNA connector respectively, and fixed by the threaded structure. At the same time, the insulator and contact are used to ensure that there is no short circuit or electrical failure between the outer conductor and the inner conductor. With the development of microwave communication technology, the VNA connector has become a very critical and indispensable component in the field of communication, especially in VNA (vector network analyzer). The connector used for VNA (vector network analyzer) needs to have good mechanical properties and reliability for repeated connection and disassembly. This includes the connector's wear resistance, corrosion resistance, high temperature resistance, etc., so the VNA connector is very suitable. VNA (vector network analyzer) is one of the essential tools for RF engineers. With the advent of the millimeter wave era, more and more engineers need to use millimeter wave network analyzers. Most of the VNA connectors on the market are expensive and large in size, which is not convenient for assembly and disassembly. Therefore, there is an urgent need for a relatively low-priced, electrical performance-superior, durable, and lightweight VNA connector to improve the convenience of use.

[0003] The patent document with the patent authorization announcement number CN107942108B discloses a RF cable assembly testing mechanism, including a base, a threaded sleeve, a magnetic ball, a magnetic ball spring, a guide rod, a RF adapter, a nut head, a slider, a cover plate, a spring washer, a screw, a return spring, a limit spring and a limit screw 14. The RF cable assembly testing mechanism integrates an adapter, one end of which is directly connected to a vector network analyzer. This mechanism fixes the tested RF cable assembly through a snap-fit ​​mechanism, and the tested RF connector and the adapter are plugged into place through a limit mechanism. The other end of the tested RF cable assembly is connected to the vector network analyzer for testing. When a component is tested, the limit is pulled by hand. Nut, pull out the limit spring, release the limit, the return spring on the guide rod pushes the slider back into place, lift the snap-fit ​​cover, take out the cable assembly, replace the new RF cable assembly under test, buckle the cover, push the slider into place, and conduct a new test; it can be seen that the existing high-frequency communication and RF test technologies lack an economical, lightweight, high-performance VNA connector and its assembly method, which can not only simplify the structure of the connector body and the tail tube, remove unnecessary screws and threads, reduce the difficulty of assembly, and reduce the risk of failure, but also accurately optimize the gap between adjacent connectors by analyzing the test process, so as to quickly screen out qualified products during the assembly process and ensure the connection quality of the connector. Summary of the invention

[0004] To this end, the present invention provides an economical, lightweight, high-performance VNA connector assembly method to overcome the problem of low assembly efficiency in the prior art due to the failure to simplify the structure of the connector body and the tail tube, the lack of automated assembly process, and the optimization of the distance between adjacent contacts.

[0005] To achieve the above object, the present invention provides an economical, lightweight, high-performance VNA connector assembly method, comprising:

[0006] Connecting the components for assembly, and obtaining a first gap distance between a first connecting member and an adjacent connecting member during the assembly process;

[0007] For the assembled connector to be tested, connect it to the connection medium so as to install it on the test equipment to perform electrical testing and obtain actual test results;

[0008] The actual test results include actual signal attenuation value, real-time contact pressure and temperature change data;

[0009] Analyzing the influence of the assembly of the connector on the test result according to the actual test result to determine whether to adjust the first gap distance;

[0010] Wherein, the influence of the connection of the contact member on the test result is analyzed based on the actual signal attenuation value to determine whether the signal attenuation meets the standard, and if it does not meet the standard, the first gap distance is corrected to the first corrected gap distance;

[0011] During the electrical test, the real-time contact pressure of the contact piece is monitored in real time, and whether there is an abnormal risk in the connection state of the contact piece is determined according to the monitoring result, and when it is determined that there is an abnormal risk, the temperature change data of the connection point is monitored in real time by a temperature sensor, and the temperature change data is analyzed, and the first correction gap distance is adjusted to the second correction gap distance according to the analysis result;

[0012] Among them, the connecting medium is a test adapter, the first connecting part is a connecting body, the adjacent connecting part is a tail pipe, and the connection point is the connection point corresponding to the first connecting part and its adjacent connecting part; the connection of the contact part includes the connection point, the gap between the connector to be tested and the connecting medium.

[0013] Further, analyzing the influence of the connection of the contact element on the test result based on the actual signal attenuation value includes:

[0014] Obtaining an actual signal attenuation value, and comparing the actual signal attenuation value with a standard signal attenuation value;

[0015] If the actual signal attenuation value is greater than or equal to the standard signal attenuation value, it is determined that the signal attenuation does not meet the standard, and a VNA is used to measure characteristic parameters, and the source of the signal attenuation is analyzed according to the measurement results, and the first gap distance is corrected.

[0016] Furthermore, the process of using VNA to measure characteristic parameters is as follows:

[0017] Connecting the connector to a test port of a VNA to perform characteristic parameter measurement to obtain a first parameter measurement value;

[0018] The connector and the test adapter are connected to a test port of a VNA to perform characteristic parameter measurement to obtain a second parameter measurement value.

[0019] Further, the sources of signal attenuation analyzed based on the measurement results include:

[0020] Obtain a first parameter measurement value and compare it with a second parameter measurement value to obtain a first comparison result or a second comparison result;

[0021] determining that the source of signal attenuation is the connection under the first comparison result;

[0022] Under the second comparison result, it is determined that the source of the signal attenuation is the gap between the connector to be tested and the connecting medium.

[0023] Further, correcting the first gap distance includes:

[0024] Correcting the first gap distance based on the first comparison result to a first corrected gap distance;

[0025] Correcting the second gap distance based on the second comparison result to ensure that the connector performance meets the standard;

[0026] The actual first gap distance is calculated according to the first gap distance and the adjustment gap difference, and the first corrected gap distance is calculated according to the actual first gap distance and the minimum allowable gap distance;

[0027] The actual first gap distance is the value obtained by subtracting the adjustment gap difference from the first gap distance, the adjustment gap difference is the product of the real-time signal attenuation difference and the adjustment coefficient, and the real-time signal attenuation difference is the difference between the actual signal attenuation value and the standard signal attenuation value;

[0028] A minimum allowable gap distance is set. If the calculated actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is recorded as the first corrected gap distance for output. If the calculated actual first gap distance is greater than or equal to the minimum allowable gap distance, the actual first gap distance is recorded as the first corrected gap distance for output.

[0029] Further, obtaining the first parameter measurement value and comparing the second parameter measurement value includes:

[0030] If the first parameter measurement value is greater than the second parameter measurement value, a first comparison result is obtained;

[0031] If the second parameter measurement value is greater than the first parameter measurement value, a second comparison result is obtained.

[0032] Further, determining whether there is an abnormal risk in the connection state of the contactor according to the monitoring result includes:

[0033] The real-time contact stress at the connection is obtained, and the real-time contact stress is analyzed according to the standard contact stress.

[0034] If the real-time contact stress is less than or equal to the standard contact stress, it is determined that there is an abnormal risk in the connection state of the contact piece, and the temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed.

[0035] Further, the temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed, including:

[0036] The real-time component temperature is obtained in a preset monitoring cycle, and a curve of the real-time component temperature changing with time is plotted to obtain a temperature change curve graph, and the slope of the curve graph is analyzed to determine whether to adjust the first gap distance.

[0037] Further, analyzing the slope of the curve graph includes:

[0038] If the slope of the curve graph is greater than the slope threshold, marking the point corresponding to the curve graph as a hot spot;

[0039] When the hot spot exists in the curve graph, the actual first gap distance of the connector to be tested is obtained, and the actual first gap distance is compared with the minimum allowable gap distance.

[0040] If the actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is increased to a corrected allowable gap distance, and the first corrected gap distance is adjusted according to the corrected allowable gap distance to a second corrected gap distance;

[0041] If the actual first gap distance is greater than or equal to the minimum allowable gap distance, the minimum allowable gap distance is not adjusted;

[0042] Among them, the corrected allowable gap distance is 1.1 times the minimum allowable gap distance.

[0043] On the other hand, the present invention also provides an assembly method based on the above-mentioned economical, lightweight and high-performance VNA connector, comprising:

[0044] A fixed connection structure, comprising an NMD screw sleeve connected to a connection body, wherein the NMD screw sleeve is used to provide mechanical fixation and electrical connection of the connector;

[0045] An interface connection structure, comprising a solder cup connected to a connection body, the solder cup being used to connect to a cable or other conductor to provide an interface for electrical connection;

[0046] The external protection structure comprises the connection body and a tail pipe connected to the connection body, wherein:

[0047] The connection body includes a conductive path for carrying other components and providing electrical connection;

[0048] The tail tube is used to protect the cables and internal components of the connector.

[0049] Compared with the prior art, the beneficial effect of the present invention is that, during the connector assembly process, a laser rangefinder is used to monitor the gap between adjacent contacts in real time, an automated assembly line is designed, and a robot arm is used for precise assembly to reduce human errors. After the assembly is completed, a comprehensive electrical test is performed, the test results are recorded, and the influence of the connection of the contacts on the test results is analyzed to ensure that the connector performance meets the standards. At the same time, by placing a pressure sensor between the contact surfaces of the connector, the contact pressure of the connector during assembly is directly measured to analyze whether there is an abnormal risk in the connection state of the contact, and when there is an abnormal risk, a high-precision temperature sensor is installed at a key position of the connector to ensure that the connector performance meets the standards. It monitors the temperature changes at the connection in real time, and through a closed-loop feedback control system, automatically adjusts the gap between adjacent contacts according to the data from the temperature sensor, analyzes historical data, optimizes the gap adjustment strategy, and is equipped with an overheating protection mechanism. When the temperature exceeds the set threshold, it automatically cuts off the power supply or sounds an alarm to prevent equipment damage. Through long-term durability testing, the reliability of the connector under various environmental conditions is ensured, including performance tests under extreme conditions such as high temperature, high humidity, and vibration. The performance and reliability of the VNA connector are effectively improved, ensuring its stability and safety in actual applications. This economical and lightweight design not only meets the needs of high performance, but also reduces production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of a flow chart of an assembly method of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the overall structure of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention;

[0052] Figure 3 A schematic diagram of some parts of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention;

[0053] Figure 4 It is a schematic diagram of the overall structure of a common VNA connector;

[0054] Figure 5 This is a schematic diagram of some parts of a common VNA connector;

[0055] Among them, 1-connecting body, 2-NMD screw sleeve, 3-soldering cup, 4-tail pipe, 5-2*T-type countersunk screws, 6-flat head countersunk screws, 7-adapter, 8-male connector, 9-rubber ring, 10-connecting screw sleeve, 11-tail body, 12-C-type retaining ring, 13-wire clamp. DETAILED DESCRIPTION

[0056] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0058] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0059] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] See also Figure 1 As shown, it is a schematic flow chart of an assembly method of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention. The present invention provides an assembly method of an economical, lightweight, high-performance VNA connector, comprising:

[0061] Step S1, connecting the components for assembly, and obtaining a first gap distance between a first connecting member and an adjacent connecting member during the assembly process;

[0062] Step S2, for the assembled connector to be tested, connect it to a connection medium, obtain a second gap distance between the connector to be tested and the connection medium, so as to install it on a test device to perform electrical testing and obtain actual test results;

[0063] The actual test results include actual signal attenuation value, real-time contact pressure and temperature change data;

[0064] Step S3, analyzing the influence of the assembly of the connector on the test result according to the actual test result to determine whether to adjust the first gap distance;

[0065] Wherein, the influence of the connection of the contact member on the test result is analyzed based on the actual signal attenuation value to determine whether the signal attenuation meets the standard, and if it does not meet the standard, the first gap distance is corrected to the first corrected gap distance;

[0066] During the electrical test of the connector to be tested, the real-time contact pressure of the contact piece is monitored in real time, and whether there is an abnormal risk in the connection state of the contact piece is determined according to the monitoring result; when it is determined that there is an abnormal risk, the temperature change data of the connection point is monitored in real time by a temperature sensor, the temperature change data is analyzed, and the first correction gap distance is adjusted to the second correction gap distance according to the analysis result;

[0067] Among them, the connecting medium is a test adapter, the first connecting part is a connecting body 1, the adjacent connecting part is a tail pipe 4, and the connection point is the connection point corresponding to the first connecting part and its adjacent connecting part; the connection of the contact part includes the connection point, the gap between the connector to be tested and the connecting medium.

[0068] Since ordinary VNA connectors have complex structures, numerous parts, and many threaded structures, the connection between the outer conductor and the tail tube needs to be connected and fixed with screws. Special attention should be paid during assembly and use to avoid loosening, falling off, and other problems, which will lead to a decrease in the electrical performance and structural reliability of the connector, thereby affecting the test accuracy of the VNA (vector network analyzer). An additional male connector is also required to connect and fix the cable and the center pin. Therefore, in this embodiment, the structure of the connector body and the tail tube part is simplified so that the performance and structural stability of the connector can still be guaranteed. First, the screw parts are removed and the threaded structure is reduced to avoid the problems of unreliable connection and difficult assembly and disassembly caused by thread damage, simplify the assembly process, and improve the reliability of the connector. Secondly, the internal structure of the connector is reasonably and purposefully optimized, the male connector is removed, and the front-end adapter part is simplified. Figure 2 As shown, it can be clearly seen that the number of connector parts is reduced, thereby reducing the cost of the connector. At the same time, the external volume of the connector is reduced, which improves the portability and ease of use of the connector. Finally, the front end screw sleeve, insulator and interface part of the connector are still the original structure without deletion or change, and the stability during the connection test can still be guaranteed.

[0069] At the same time, during the connector assembly process, a laser rangefinder is used to monitor the gap between adjacent contacts in real time, an automated assembly line is designed, and a robot arm is used for precise assembly to reduce human errors. After the assembly is completed, a comprehensive electrical test is carried out, the test results are recorded, and the impact of the connection of the contacts on the test results is analyzed to ensure that the connector performance meets the standards. At the same time, by placing a pressure sensor between the contact surfaces of the connector, the contact pressure of the connector during assembly is directly measured to analyze whether there is an abnormal risk in the connection state of the contact. When there is an abnormal risk, a high-precision temperature sensor is installed at the key part of the connector to monitor the temperature change at the connection in real time. Through a closed-loop feedback control system, the gap between adjacent contacts is automatically adjusted according to the data of the temperature sensor, and historical data is analyzed to optimize the gap adjustment strategy. An overheating protection mechanism is set. When the temperature exceeds the set threshold, the power supply is automatically cut off or an alarm is issued to prevent equipment damage. The reliability of the connector under various environmental conditions is ensured by conducting long-term durability tests, including performance tests under extreme conditions such as high temperature, high humidity, and vibration. The performance and reliability of the VNA connector are effectively improved, ensuring its stability and safety in actual applications, which not only meets the requirements of high performance, but also reduces production and maintenance costs.

[0070] Specifically, the impact of the connection of the contact on the test results is analyzed based on the actual test results, including:

[0071] Obtaining an actual signal attenuation value, and comparing the actual signal attenuation value with a standard signal attenuation value;

[0072] If the actual signal attenuation value is less than the standard signal attenuation value, the signal attenuation is determined to meet the standard and a performance test report is generated;

[0073] If the actual signal attenuation value is greater than or equal to the standard signal attenuation value, it is determined that the signal attenuation does not meet the standard, and a VNA is used to measure characteristic parameters, and the source of the signal attenuation is analyzed according to the measurement results, and the first gap distance is corrected.

[0074] The standard signal attenuation value in this embodiment represents a set standard attenuation range. The standard value of signal attenuation depends on the specific application and frequency range. The connector frequency range of VNA is from DC (direct current) to 145 GHz. As the frequency increases, the set signal attenuation standard value also increases. In low-frequency applications from DC to 1 GHz, the standard signal attenuation value is set in the range of 0.1 dB-1 dB. In medium-frequency applications from 1 GHz to 6 GHz, the standard signal attenuation value is set in the range of 0.5 dB-2 dB. In high-frequency applications from 6 GHz to 18 GHz, the standard signal attenuation is set in the range of 1 dB-3 dB. In ultra-high frequency applications from 18 GHz to 40 GHz, the standard signal attenuation is set in the range of 2 dB to 4 dB. In extremely high frequency applications from 40 GHz to 145 GHz, the standard signal attenuation is set in the range of 3 dB to 6 dB, and is selected and adjusted according to the quality of the connector and the adapter. The performance test report includes but is not limited to the phase difference, impedance matching, standing wave ratio, insertion loss, and return loss of the measured signal between the input and output ports.

[0075] In this embodiment, since the structure of the connector body and the tail tube part is simplified, the electrical test results are analyzed, that is, the actual signal attenuation value is directly obtained for comparison with the standard. When it is determined that the actual signal attenuation value is less than the standard signal attenuation value, indicating that the signal attenuation amplitude is within the standard range, the electrical test results are obtained and a performance test report is generated. When it is determined that the actual signal attenuation value is greater than or equal to the standard signal attenuation value, it may be due to unqualified assembly, excessive gap or poor contact at the connection between the connector body and the tail tube. At this time, it is necessary to optimize the gap distance between the connector body and the tail tube part to ensure the performance and structural stability of the connector. It may also be due to abnormal signal attenuation caused by abnormal connection between the connector and the adapter. In this case, it is necessary to further analyze according to the characteristic parameter measurement process to quickly screen out qualified connectors, or optimize the gap distance between the connector body and the tail tube part according to the analysis results to ensure the performance and structural stability of the connector.

[0076] Specifically, the process of using VNA to measure characteristic parameters is as follows:

[0077] Connecting the connector to a test port of a VNA to perform characteristic parameter measurement to obtain a first parameter measurement value;

[0078] The connector and the test adapter are connected to a test port of a VNA to perform characteristic parameter measurement to obtain a second parameter measurement value.

[0079] Specifically, the sources of signal attenuation analyzed based on the measurement results include:

[0080] Obtain a first parameter measurement value and compare it with a second parameter measurement value to obtain a first comparison result or a second comparison result;

[0081] determining that the source of signal attenuation is the connection under the first comparison result;

[0082] Under the second comparison result, it is determined that the source of the signal attenuation is the gap between the connector to be tested and the connecting medium.

[0083] Specifically, the correction of the first gap distance includes:

[0084] Correcting the first gap distance based on the first comparison result to a first corrected gap distance;

[0085] Correcting the second gap distance based on the second comparison result to ensure that the connector performance meets the standard;

[0086] The actual first gap distance is calculated according to the first gap distance and the adjustment gap difference, and the first corrected gap distance is calculated according to the actual first gap distance and the minimum allowable gap distance;

[0087] The actual first gap distance is the value obtained by subtracting the adjustment gap difference from the first gap distance, the adjustment gap difference is the product of the real-time signal attenuation difference and the adjustment coefficient, and the real-time signal attenuation difference is the difference between the actual signal attenuation value and the standard signal attenuation value;

[0088] A minimum allowable gap distance is set. If the calculated actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is recorded as the first corrected gap distance for output. If the calculated actual first gap distance is greater than or equal to the minimum allowable gap distance, the actual first gap distance is recorded as the first corrected gap distance for output.

[0089] In this embodiment, the adjustment coefficient is set to 0.1mm / dB, and the adjustment coefficient indicates the gap amount required to be adjusted for each 1dB signal attenuation reduction. For example, the actual signal attenuation value is 3.5dB, the standard signal attenuation value is 2dB, the first gap distance is 1mm, and the minimum allowable gap distance is 0.5mm. The actual first corrected gap distance calculated is 1mm-0.1mm / dB×(3.5dB-2dB)=0.85mm. The first parameter measurement value is S11 (reflection coefficient), and the second parameter measurement value is S21 (transmission coefficient). When the S11 value is high, it means that the signal reflection is large. Due to the large gap or poor contact at the connection, when the S21 value is low, it means that the signal transmission loss is large. It is caused by the gap problem between the connector and the adapter, that is, based on the measurement results, verify the performance of the connector and the adapter. If it is found that the signal attenuation is large, check the gap and contact at the connection. Under the second comparison result, the staff needs to adjust the connection between the connector and the adapter to ensure that they are tightly fitted, and then re-measure the characteristic parameters to observe the changes in the results. Under the first comparison result, reduce the first gap distance, and monitor the stress size and temperature changes during the adjustment process to avoid the gap being too small, which will cause the connector to be unable to move freely during thermal expansion during high-frequency testing, causing damage or failure of the connector and affecting the continuity and reliability of the test. Therefore, the accuracy and reliability of optimizing the first gap distance are improved to optimize signal transmission performance.

[0090] Specifically, obtaining a first parameter measurement value and a second parameter measurement value for comparison includes:

[0091] If the first parameter measurement value is greater than the second parameter measurement value, a first comparison result is obtained;

[0092] If the second parameter measurement value is greater than the first parameter measurement value, a second comparison result is obtained.

[0093] Specifically, determining whether there is an abnormal risk in the connection state of the contactor based on the monitoring results includes:

[0094] The real-time contact stress at the connection is obtained, and the real-time contact stress is analyzed according to the standard contact stress.

[0095] If the real-time contact stress is less than the standard contact stress, it is determined that the connection of the contact piece is normal, that is, there is no abnormal risk in the connection state of the contact piece;

[0096] If the real-time contact stress is less than or equal to the standard contact stress, it is determined that there is an abnormal risk in the connection state of the contact piece, and the temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed.

[0097] The standard contact stress in this embodiment represents a set safety threshold value, and the set value is related to the material of the connector. The standard contact stress of the aluminum alloy connector is set between 50MPa and 100MPa, and the standard contact stress of the plastic connector is set between 20MPa and 40MPa, and is selected according to the actual application scenario.

[0098] Specifically, the temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed, including:

[0099] The real-time component temperature is obtained in a preset monitoring cycle, and a curve of the real-time component temperature changing with time is plotted to obtain a temperature change curve graph, and the slope of the curve graph is analyzed to determine whether to adjust the first gap distance.

[0100] Specifically, analyzing the slope of the curve graph includes:

[0101] If the slope of the curve graph is greater than the slope threshold, marking the point corresponding to the curve graph as a hot spot;

[0102] If the slope of the curve graph is less than or equal to the slope threshold, the point corresponding to the curve graph is not marked;

[0103] When the hot spot exists in the curve graph, the actual first gap distance of the connector to be tested is obtained, and the actual first gap distance is compared with the minimum allowable gap distance.

[0104] If the actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is increased to a corrected allowable gap distance, and the first corrected gap distance is adjusted according to the corrected allowable gap distance to a second corrected gap distance;

[0105] If the actual first gap distance is greater than or equal to the minimum allowable gap distance, the minimum allowable gap distance is not adjusted;

[0106] Among them, the corrected allowable gap distance is 1.1 times the minimum allowable gap distance.

[0107] The slope threshold set in this embodiment represents the rate at which the temperature change is allowed, which is set to 1°C / min. The minimum allowable gap distance is set to 0.5mm. The minimum allowable gap distance is the minimum gap value set to ensure the normal operation of the connector and avoid mechanical failure. This gap is to prevent excessive contact or friction between the connectors. In a high temperature, high humidity or high vibration environment, the minimum allowable gap needs to be increased to adapt to environmental changes. Therefore, the minimum allowable gap is increased according to the temperature change monitoring results to adapt to environmental changes.

[0108] The collected temperature data is plotted as a temperature-time curve, and the slope of the temperature change curve is calculated to identify the rate of temperature rise. When the slope exceeds the set threshold, it indicates that the point is a potential hot spot, indicating that it is in a high temperature environment. The minimum allowable gap needs to be increased to adapt to environmental changes and ensure the reliability and performance of the connector.

[0109] See also Figure 2 and Figure 3 As shown, Figure 2 This is a schematic diagram of the overall structure of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention. Figure 3 A schematic diagram of some parts of an economical, lightweight, high-performance VNA connector according to an embodiment of the present invention;

[0110] Specifically, an economical, lightweight, high-performance VNA connector is provided. The assembly method of the economical, lightweight, high-performance VNA connector of this embodiment includes:

[0111] A fixed connection structure, comprising an NMD screw sleeve 2 connected to the connection body 1, wherein the NMD screw sleeve 2 is used to provide mechanical fixation and electrical connection of the connector;

[0112] An interface connection structure, comprising a solder cup 3 connected to a connection body, wherein the solder cup 3 is used to connect to a cable or other conductor to provide an interface for electrical connection;

[0113] The external protection structure includes the connection body 1 and the tail pipe 4 connected to the connection body 1, wherein:

[0114] The connection body 1 includes a conductive path, which is used to carry other components and provide electrical connection;

[0115] The tail pipe 4 is used to protect the cables and internal components of the connector and prevent the connector from being affected by the external environment.

[0116] See also Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of the overall structure of a common VNA connector. Figure 5 This is a schematic diagram of some parts of a common VNA connector;

[0117] The design of the economical and lightweight VNA connector in this embodiment aims to integrate multiple components at the rear of the connector into one, and delete some unnecessary components. By comparing the rear components of an ordinary VNA connector and the newly designed VNA connector in this embodiment, it can be obviously found that the number of connector components is reduced, and components such as screws, rubber rings, wire clamps and male connectors have been deleted, and the functions of components such as the adapter, the rear body and the connector body have been integrated together.

[0118] The tail of the connector is directly connected to the standard VNA female screw sleeve at the front end, ensuring reliable connection performance and multiple repeated connections and plugging and unplugging. The tail of the connector retains the connection body 1, the tail tube 4 and the solder cup 3 to fix and protect the cable. The connector structure designed in this embodiment is greatly simplified, reducing the size and weight of the connector; greatly reducing the cost of the connector, while also ensuring the performance of the VNA connector.

[0119] Specifically, as shown in Table 1 and Table 2, the cost of the ordinary VNA connector and the economical and lightweight VNA connector of the present embodiment are compared. It can be seen that since the economical and lightweight connector simplifies the structure and removes the male connector, its material cost is only 34% of the ordinary VNA connector. At the same time, the reduction in parts reduces the difficulty of assembly, and the labor hours are also reduced by half, only 50% of the original time. In terms of price, the market price of the VNA connector of ordinary structure is about 248.67 yuan / PCS, while the market price of the economical and lightweight VNA connector is about 91.34 yuan / PCS, which is only 37% of the former. In terms of weight, the weight of the VNA connector of ordinary structure is about 76.4g / PCS, while the weight of the economical and lightweight VNA connector in the present embodiment is about 41.24g / PCS, which is only 54% of the former; in terms of volume, compared with the VNA connector of ordinary structure, the volume of the economical and lightweight connector is reduced by about 50%.

[0120] Table 1

[0121]

[0122] Table 2

[0123]

[0124] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0125] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An economical, lightweight, high-performance VNA connector assembly method, characterized in that: include, Connecting the components for assembly, and obtaining a first gap distance between a first connecting member and an adjacent connecting member during the assembly process; For the assembled connector to be tested, connect it to the connection medium so as to install it on the test equipment to perform electrical testing and obtain actual test results; The actual test results include actual signal attenuation value, real-time contact pressure and temperature change data; Analyzing the influence of the assembly of the connector on the test result according to the actual test result to determine whether to adjust the first gap distance; Wherein, the influence of the connection of the contact member on the test result is analyzed based on the actual signal attenuation value to determine whether the signal attenuation meets the standard, and if it does not meet the standard, the first gap distance is corrected to the first corrected gap distance; During the electrical test, the real-time contact pressure of the contact piece is monitored in real time, and whether there is an abnormal risk in the connection state of the contact piece is determined according to the monitoring result, and when it is determined that there is an abnormal risk, the temperature change data of the connection point is monitored in real time by a temperature sensor, and the temperature change data is analyzed, and the first correction gap distance is adjusted to the second correction gap distance according to the analysis result; Wherein, the connection medium is a test adapter, the first connection piece is a connection body, the adjacent connection piece is a tail pipe, and the connection point is a connection point corresponding to the first connection piece and its adjacent connection piece; the connection of the contact piece includes the connection point, the gap between the connector to be tested and the connection medium; Analyzing the influence of the connection of the contact on the test result based on the actual signal attenuation value includes: Obtaining an actual signal attenuation value, and comparing the actual signal attenuation value with a standard signal attenuation value; If the actual signal attenuation value is greater than or equal to the standard signal attenuation value, it is determined that the signal attenuation does not meet the standard, and the VNA is used to measure the characteristic parameters, and the source of the signal attenuation is analyzed according to the measurement results, and the first gap distance is corrected; Correction of the first gap distance includes: Correcting the first gap distance based on the first comparison result to a first corrected gap distance; Correcting the second gap distance based on the second comparison result to ensure that the connector performance meets the standard; The actual first gap distance is calculated according to the first gap distance and the adjustment gap difference, and the first corrected gap distance is calculated according to the actual first gap distance and the minimum allowable gap distance; The actual first gap distance is the value obtained by subtracting the adjustment gap difference from the first gap distance, the adjustment gap difference is the product of the real-time signal attenuation difference and the adjustment coefficient, and the real-time signal attenuation difference is the difference between the actual signal attenuation value and the standard signal attenuation value; A minimum allowable gap distance is set. If the calculated actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is recorded as the first corrected gap distance for output. If the calculated actual first gap distance is greater than or equal to the minimum allowable gap distance, the actual first gap distance is recorded as the first corrected gap distance for output.

2. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 1, characterized in that: The process of using VNA to measure characteristic parameters is as follows: Connecting the connector to a test port of a VNA to perform characteristic parameter measurement to obtain a first parameter measurement value; The connector and the test adapter are connected to a test port of a VNA to perform characteristic parameter measurement to obtain a second parameter measurement value.

3. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 1, characterized in that: The sources of signal attenuation analyzed based on the measurement results include: Obtain a first parameter measurement value and compare it with a second parameter measurement value to obtain a first comparison result or a second comparison result; determining that the source of signal attenuation is the connection under the first comparison result; Under the second comparison result, it is determined that the source of the signal attenuation is the gap between the connector to be tested and the connecting medium.

4. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 3, characterized in that: Obtaining a first parameter measurement value and comparing it with a second parameter measurement value includes, If the first parameter measurement value is greater than the second parameter measurement value, a first comparison result is obtained; If the second parameter measurement value is greater than the first parameter measurement value, a second comparison result is obtained.

5. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 1, characterized in that: Determine whether there is an abnormal risk in the connection state of the contact according to the monitoring results, including: The real-time contact stress at the connection is obtained, and the real-time contact stress is analyzed according to the standard contact stress. If the real-time contact stress is less than or equal to the standard contact stress, it is determined that there is an abnormal risk in the connection state of the contact piece, and the temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed.

6. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 5, characterized in that: The temperature change data of the connection is monitored in real time by a temperature sensor, and the temperature change data is analyzed, including: The real-time component temperature is obtained in a preset monitoring cycle, and a curve of the real-time component temperature changing with time is plotted to obtain a temperature change curve graph, and the slope of the curve graph is analyzed to determine whether to adjust the first gap distance.

7. The method for assembling an economical, lightweight, high-performance VNA connector according to claim 6, characterized in that: Analyzing the slope of the graph includes: If the slope of the curve graph is greater than the slope threshold, marking the point corresponding to the curve graph as a hot spot; When the hot spot exists in the curve graph, the actual first gap distance of the connector to be tested is obtained, and the actual first gap distance is compared with the minimum allowable gap distance. If the actual first gap distance is less than the minimum allowable gap distance, the minimum allowable gap distance is increased to a corrected allowable gap distance, and the first corrected gap distance is adjusted according to the corrected allowable gap distance to a second corrected gap distance; If the actual first gap distance is greater than or equal to the minimum allowable gap distance, the minimum allowable gap distance is not adjusted; Among them, the corrected allowable gap distance is 1.1 times the minimum allowable gap distance.

8. An economical, lightweight, high-performance VNA connector, comprising: an assembly method of an economical, lightweight, high-performance VNA connector according to any one of claims 1 to 7, characterized in that: include, A fixed connection structure, comprising an NMD screw sleeve connected to a connection body, wherein the NMD screw sleeve is used to provide mechanical fixation and electrical connection of the connector; An interface connection structure, comprising a solder cup connected to a connection body, the solder cup being used to connect to a cable or other conductor to provide an interface for electrical connection; The external protection structure comprises the connection body and a tail pipe connected to the connection body, wherein: The connection body includes a conductive path for carrying other components and providing electrical connection; The tail tube is used to protect the cables and internal components of the connector.

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