An all-pass filter detection system

Abstract

The application belongs to the technical field of detection devices, and particularly relates to a full-communication filter detection system which comprises a feeding and discharging control unit, a detection table, a performance detection unit and a software control system, further comprises pneumatic clamps, the pneumatic clamps are symmetrically distributed on the detection table, rotary clamps are rotationally connected to end portions of the pneumatic clamps, and the rotary clamps are connected with rotary motors installed on the pneumatic clamps; in the process of radio frequency power-on detection, the electric push rod drives the detection clamp to move and insert into the interface of the filter, under the premise of maintaining the above operation to be opposite and the installation precision, power-on connection test is carried out, the abrasion, plating wear and plastic deformation of the detection clamp to the conductive contact in the interface are reduced, the dimensional accuracy, surface flatness and conductive performance of the internal metal contact are protected, the problems such as the increase of contact resistance and the discontinuity of radio frequency impedance caused by mechanical damage are prevented, and it is ensured that the interface and the detection clamp still maintain good conductive state and electrical reliability after multiple detections.

Description

Technical Field

[0001] This invention belongs to the field of detection device technology, specifically a full communication filter detection system. Background Technology

[0002] With the rapid development of technologies such as 5G, WiFi, IoT, and satellite communication, radio frequency (RF) communication filters, including SAW / BAW filters, dielectric filters, cavity filters, LTCC filters, and duplexers, have become core components in communication terminals and base station equipment. Their electrical performance indicators, such as insertion loss, return loss, in-band ripple, out-of-band rejection, and group delay, directly determine the signal quality, transmission rate, and anti-interference capability of the communication system. Therefore, in the filter manufacturing process, it is essential to use a professional RF testing system to perform full-parameter, high-precision, and highly repeatable automated testing and sorting of the devices.

[0003] Traditional filter testing methods often rely on manual handheld connector testing or simple semi-automatic fixture testing, which have the following obvious drawbacks: Poor consistency in manual operation, unstable insertion and removal force and docking position of RF interface can easily cause contact resistance fluctuations and impedance discontinuities, resulting in test data drift, poor repeatability, and a large number of misjudgments. After long-term, high-frequency insertion and removal, the contacts inside the RF interface are prone to wear, plating peeling, elastic fatigue, oxidation, and dirt accumulation, which further aggravates the increase in insertion loss, VSWR degradation, and intermittent signal jumps, seriously affecting the detection accuracy. Structural errors such as filter interface size deviation, positional offset, and poor flatness can lead to inaccurate connection between the test and detection connector and the device port, resulting in issues such as loose connections, bias voltage, and uneven force, which in turn distorts the RF test results. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a full communication filter detection system.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This invention proposes a full communication filter detection system, including a loading and unloading control unit, a detection platform, a performance detection unit, and a software control system; it also includes: A pneumatic clamp is symmetrically distributed on the testing table. A rotating clamp is rotatably connected to the end of the pneumatic clamp, and the rotating clamp is connected to a rotating motor installed on the pneumatic clamp. The end of the rotating clamp contacts the two sides of the filter away from the interface. A displacement rod is slidably connected to the pneumatic clamp by a spring. One end of the displacement rod contacts the rotating clamp and the filter, and the other end is connected to the displacement sensor on the testing table. The swing frame is symmetrically distributed on both sides of the pneumatic fixture and is rotatably connected to the test table via a swing motor. The side of the swing frame away from the rotating part is a telescopic structure, and a longitudinal adjustment rod is set inside the telescopic structure. The side part of the swing frame is disconnected from the rotating part and slides against it. A transverse adjustment rod is screwed onto the rotating part of the swing frame, and one side of the transverse adjustment rod is threadedly connected to the side part of the swing frame. A test frame is slidably connected to the swing frame, and a test fixture of a performance testing unit is set on the test frame. The test frame and the test fixture are connected by an electric push rod, and visual inspection probes are distributed on the swing frame.

[0006] Preferably, the flat end of the displacement rod is uniformly provided with balls, and a nozzle is provided between adjacent balls. The nozzle is connected to the air pump in the detection system, with one nozzle drawing in air and the other blowing air. One end of the detection frame extends into the swing frame, and the part of the detection frame extending into the swing frame is disc-shaped. The inside of the swing frame and the disc part of the detection frame are slidably connected by a spring. A vent pipe is provided inside the swing frame, and one end of the vent pipe is connected to the detection frame. The detection fixture is tubular and has a spiral groove on the outside. A guide block is provided on the detection frame and extends into the spiral groove. The end of the electric push rod is rotatably connected to one end of the detection fixture, and the other end is trumpet-shaped.

[0007] Preferably, a detection connecting block is slidably connected to one end wall of the detection fixture via a spring. The detection connecting block is matched to the interface of the filter. The detection fixture has a spray hole that communicates with the inside of the detection frame. A slide rod is slidably connected to the inner wall of the detection fixture via a spring. The slide rod is distributed in a ring around the axis of the detection fixture. An arc-shaped plate is provided at the end of the slide rod. The end of the arc-shaped plate near the opening of the detection fixture is inclined.

[0008] Preferably, the surface of the arc-shaped plate near the center of the detection fixture is uniformly provided with grinding strips, which are arranged in a spiral shape.

[0009] Preferably, one end of the detection connection block is provided with a connecting piece, and the connecting piece is arc-shaped and made of an elastic conductive metal material.

[0010] Preferably, one end of the arc-shaped plate is provided with a cleaning plate, and the cleaning plate is made of insulating material, and the cleaning plate contacts the end of the detection connecting block.

[0011] Preferably, the detection fixture has a protruding ring inside, and the protruding ring is located on one side of the connecting piece and contacts the connecting piece.

[0012] Preferably, the cross-section of the convex ring is trapezoidal, and the inner ring of the convex ring is provided with a lubricating coating.

[0013] Preferably, the part of the connecting piece near the detection connecting block has a flat surface, and the part away from the detection connecting block has a curved surface.

[0014] Preferably, a grinding disc is slidably connected to the opening at one end of the testing fixture via a spring, and the two sides of the grinding disc are inclined.

[0015] The beneficial effects of this invention are as follows: 1. The full communication filter testing system of the present invention, during radio frequency (RF) power-on testing, uses an electric push rod to move a testing fixture into the filter interface. Under the premise of maintaining alignment and installation accuracy, a power-on connection test is performed. This reduces scratching, plating wear, and plastic deformation of the conductive contacts inside the interface by the testing fixture, protects the dimensional accuracy, surface flatness, and conductivity of the internal metal contacts, and prevents problems such as increased contact resistance and discontinuous RF impedance caused by mechanical damage. It ensures that the interface and testing fixture maintain good conductivity and electrical reliability after multiple tests.

[0016] 2. The full communication filter testing system described in this invention uses visual inspection probes distributed on a swing frame, in conjunction with a displacement sensor, to identify problems such as out-of-tolerance filter dimensions, shell deformation, missing corners, damage, and abnormal placement posture in the online testing process. This allows for the early rejection of unqualified components, preventing such components from entering the RF testing stage and causing interface damage, test distortion, and misjudgments or missed tests. At the same time, the clamping area avoids the RF interface, preventing port deformation or contact damage due to pressure. This ensures the accuracy and repeatability of filter testing, and also improves the reliability of the testing process and the safety of equipment operation. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the invention from a top view. Figure 3 It is a filter diagram showing the alignment of the swing frame with the interface at both ends; Figure 4 This is a schematic diagram of the swing frame rotating; Figure 5 It is a filter diagram showing the oscillating frame aligned with the interface on the same end; Figure 6 This is a schematic diagram of the internal structure of the testing frame; Figure 7 yes Figure 6 A schematic diagram of the testing fixture extending from the testing frame; Figure 8 This is a schematic diagram of a filter that combines two interfaces in this invention.

[0019] In the diagram: 1. Testing table, 11. Pneumatic clamp, 12. Rotating clamp, 13. Rotating motor, 14. Displacement rod, 15. Swing frame, 16. Swing motor, 17. Longitudinal adjustment rod, 18. Lateral adjustment rod, 19. Testing frame, 2. Testing clamp, 21. Electric push rod, 22. Nozzle, 23. Vent pipe, 24. Spiral groove, 25. Guide block, 26. Testing connecting block, 27. Nozzle, 28. Slide rod, 29. Arc plate, 3. Grinding strip, 31. Connecting piece, 32. Cleaning piece, 33. Convex ring, 34. Grinding disc. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: To effectively solve the above problems, see the attached diagram in the instruction manual. Figure 1-8 As shown, a full communication filter testing system includes a loading / unloading control unit, a testing platform 1, a performance testing unit, and a software control system. The loading / unloading control unit uses a robotic arm or a moving device to transfer the filter to the center of the testing platform 1. Then, a pneumatic clamp 11 clamps the filter, and the loading / unloading control unit releases it, thus completing the filter loading / unloading testing process. The performance testing unit includes radio frequency testing, etc. It also includes: A pneumatic clamp 11 is symmetrically distributed on the testing table 1. A rotating clamp 12 is rotatably connected to the end of the pneumatic clamp 11, and the rotating clamp 12 is connected to a rotating motor 13 installed on the pneumatic clamp 11. The end of the rotating clamp 12 contacts the two sides of the filter away from the interface. A displacement rod 14 is slidably connected to the pneumatic clamp 11 by a spring. One end of the displacement rod 14 contacts the rotating clamp 12 and the filter, and the other end is connected to the displacement sensor on the testing table 1. A swing frame 15 is symmetrically distributed on both sides of the pneumatic clamp 11. The swing frame 15 is rotatably connected to the test table 1 via a swing motor 16. The side of the swing frame 15 away from the rotating part is a telescopic structure. A longitudinal adjustment rod 17 is provided in the telescopic structure. The side part of the swing frame 15 is disconnected from the rotating part and slides against it. A transverse adjustment rod 18 is screwed onto the rotating part of the swing frame 15, and one side of the transverse adjustment rod 18 is threadedly connected to the side part of the swing frame 15. A test frame 19 is slidably connected to the swing frame 15. The test frame 19 is provided with a test fixture 2 of the performance test unit. The test frame 19 and the test fixture 2 are connected via an electric push rod 21. Visual inspection probes are distributed on the swing frame 15. The pneumatic clamp 11 is a conventional pneumatic push rod. The pneumatic clamp 11 is extended and retracted by the air supply and suction of the equipped air pump to complete the clamping action of the filter. The displacement sensor is used to detect the size of the filter. The rotating part and the side part of the swing frame 15 are separated from each other. When the filter size is small, the longitudinal adjustment rod 17 is twisted, and the telescopic swing frame 15 is shortened. The swing frame 15 drives the detection frame 19 to move closer to the pneumatic clamp 11. When the filter interfaces are gathered on the same side, the two swing frames 15 swing towards each other. The lower swing frame 15 is adjusted into a stepped shape by the transverse adjustment rod 18, so that the lower detection frame 19 is lowered. The same method is used to raise the upper detection frame 19. The two swing frames 15 drive the detection frame 19 to separate vertically and vertically, aligning with the upper and lower rows of interfaces of the filter gathered on the same side.

[0022] Specific workflow: When the worker places the filter on the testing table 1 via the loading / unloading control unit, the pneumatic clamp 11 activates and clamps the filter on both sides away from the interface. The telescopic end of the pneumatic clamp 11 drives the displacement rod 14 to move. The displacement rod 14 is T-shaped, with its flat end contacting and releasing the side of the filter as the pneumatic clamp 11 moves. The other end of the displacement rod 14 is connected to a displacement sensor. After the pneumatic clamp 11 clamps the filter, the displacement rod 14 also rests against both sides of the filter. Simultaneously, the side dimensions of the filter are measured. For example, the two symmetrical displacement rods 14 need to move 20 centimeters before stopping. During measurement, the displacement rods 14 on both sides move 10 cm and then contact the filter and stop moving. A gap of 20 cm indicates that the width of the filter is 20 cm. If the filter is long, the displacement rods 14 are evenly distributed at both ends of the filter, and the dimensions and positioning error at both ends of the filter are measured. This method can automatically complete the centering correction of the device during clamping, ensuring that the filter RF interface is always in the preset standard docking position. It effectively avoids the misalignment between the RF detection connection block 26 and the interface contact due to placement tilt or position offset, and significantly improves the stability of the RF connection and the consistency of the detection data. On the other hand, visual inspection probes distributed on the swing frame 15, together with the displacement sensor, can identify problems such as out-of-tolerance filter dimensions, shell deformation, corner damage, and abnormal placement posture in the online manner, and reject unqualified devices in advance to avoid such devices entering the radio frequency testing stage and causing interface damage, test distortion, and misjudgment and missed test. At the same time, the clamping area avoids the radio frequency interface, which can prevent the port from being deformed by pressure or the contact from being damaged. This not only ensures the filter testing accuracy and repeatability, but also improves the reliability of the testing process and the safety of equipment operation. Furthermore, when the pneumatic clamp 11 moves, it drives the rotating clamp 12 to move and clamp the filter. Then, the rotating motor 13 is started to drive the rotating clamp 12 to rotate, and the rotating clamp 12 drives the filter to rotate. The filter rotates around the central axis. When the end of the filter with the interface rotates past the stationary swing frame 15, the interface of the filter is close to the vision inspection probe. The vision inspection probe detects the interface at the end of the filter at close range, which can realize fully automatic circumferential positioning and attitude adjustment of the filter interface end face. Without manual alignment or additional vision correction mechanism, the interface can be accurately delivered to the best imaging position of the vision inspection probe, ensuring that the interface is always in a clear, stable and consistent detection field of view, improving the accuracy and reliability of interface appearance inspection. The filter rotates at a constant speed around its central axis, allowing the interface to smoothly transition to the detection position during movement. This avoids rigid displacement or impact that could cause device wobbling or shifting, ensuring stable detection posture without inflicting additional stress or damage to the interface contacts. Furthermore, after the interface passes appearance inspection, the device can maintain its current positioning posture and directly enter the RF testing station, eliminating the need for secondary positioning and repeated clamping, thus improving the overall automation level of the testing process. If the interface rotation trajectory is abnormal or the position shift is too large, the system can detect clamping failure or device deformation in advance, preventing such defective products from entering the RF testing stage and causing problems such as pin collisions or poor contact in the detection connector 26. During the test preparation process, if the filter interfaces are located at both ends, the two swing frames 15 are driven by the swing motor 16 to swing apart. The two swing frames 15, carrying the test frame 19, the test fixture 2, and the visual inspection probe, move to both ends of the filter and face the interfaces. If the filter interfaces are clustered at one end, the two swing frames 15 swing to be arranged vertically. The worker twists the horizontal adjustment rod 18, which is fixed to the rotating part of the swing frame 15. Through the screw connection, the side part of the swing frame 15 slides alternately with the rotating part until the two swing frames 15 form a step shape to align with the interfaces arranged on the same side. The above operation ensures that the visual inspection probe and the RF test interface are always at the optimal facing angle, effectively eliminating the blind spot caused by the interface arrangement difference, improving the accuracy of interface appearance defect identification, and providing a stable and reliable docking posture for subsequent RF testing, reducing alignment deviation, poor contact, and other problems. Furthermore, during RF power-on testing, the electric push rod 21 moves the testing fixture 2 into the filter interface. Under the premise of maintaining the correct alignment and installation accuracy in the above operations, the power-on connection test is performed. This reduces the scratching, plating wear and plastic deformation of the conductive contacts inside the interface by the testing fixture 2, protects the dimensional accuracy, surface flatness and conductivity of the internal metal contacts, and prevents problems such as increased contact resistance and discontinuous RF impedance caused by mechanical damage. This ensures that the interface and testing fixture 2 maintain good conductivity and electrical reliability after multiple tests. Furthermore, even if the test fixture 2 is subjected to lateral pressure from the interface, the test frame 19 and the swing frame 15 are slidably connected. The pressure can be relieved by the left and right sliding of the test frame 19, thus achieving a flexible docking. This prevents the test fixture 2 from getting stuck, misaligned, or tilted with the inner wall of the interface, protecting the filter interface from external damage and reducing the wear and tear of the test fixture 2 itself. Moreover, the smooth, shock-free, and friction-free insertion and engagement ensures that the test fixture 2 and the internal conductive contacts are fully engaged, resulting in a stable and consistent contact state. This effectively improves the connection reliability during RF testing and reduces the impact of insertion loss drift.

[0023] Example 2: Based on Embodiment 1, the flat end of the displacement rod 14 is uniformly provided with balls, and a nozzle 22 is provided between adjacent balls. The nozzle 22 is connected to the air pump in the detection system, with one nozzle 22 drawing in air and the other nozzle 22 blowing air. One end of the detection frame 19 extends into the swing frame 15, and the part of the detection frame 19 extending into the swing frame 15 is disc-shaped. The inside of the swing frame 15 and the disc part of the detection frame 19 are slidably connected by a spring. The swing frame 15 is provided with a vent pipe 23, and one end of the vent pipe 23 is connected to the detection frame 19. The detection fixture 2 is tubular and has a spiral groove 24 on its outer side. The detection frame 19 is provided with a guide block 25 that extends into the spiral groove 24. The end of the electric push rod 21 is rotatably connected to one end of the detection fixture 2, and the other end is horn-shaped. A detection connection block 26 is slidably connected to one end wall of the detection fixture 2 by a spring. The detection connection block 26 is matched to the interface of the filter. The detection fixture 2 has a spray hole 27 that communicates with the inside of the detection frame 19. A slide rod 28 is slidably connected to the inner wall of the detection fixture 2 by a spring. The slide rod 28 is distributed in a ring around the axis of the detection fixture 2. An arc plate 29 is provided at the end of the slide rod 28. The end of the arc plate 29 near the opening of the detection fixture 2 is inclined. The surface of the arc plate 29 near the center of the detection fixture 2 is uniformly provided with grinding strips 3, which are arranged in a spiral shape; The detection connection block 26 has a connecting piece 31 at one end, and the connecting piece 31 is arc-shaped and made of an elastic conductive metal material.

[0024] Specific workflow: By setting ball bearings, the displacement rod 14 indirectly contacts the filter through the ball bearings. When the filter rotates, the rolling of the ball bearings reduces the friction between the displacement rod 14 and the filter, preventing the displacement rod 14 from affecting the rotation of the filter. When the filter rotates, the air pump sprays air into the nozzle 22 on one side of the filter and draws air from the nozzle 22 on the other side. Since the nozzle 22 is located on both sides of the filter near the two ends along with the displacement rod 14, the nozzle 22 blows and draws air around the filter, causing the air around the filter to flow in a uniform direction to flush its surface and interface, achieving the purpose of cleaning the filter surface, reducing the impact of impurities on the detection of surface defects of the filter, and also improving the cleanliness of the filter interface, avoiding arcing caused by impurities during power-on testing, thereby improving the stability of the RF connection and the consistency of the test data; the directional airflow can directly guide impurities to the exhaust end for discharge, preventing impurities from being re-entrained in the testing station and maintaining a clean testing environment. Furthermore, after cleaning the filter interface, the testing fixture 2 is aligned with the filter interface, and the electric push rod 21 extends, causing the testing fixture 2 to extend out of the testing frame 19. The flared end of the testing fixture 2 contacts the filter interface, and the inner wall of the flared shape guides the testing fixture 2 and the filter interface to accurately insert. For example, if the testing fixture 2 is subjected to lateral pressure to the left during insertion, the flared end of the testing fixture 2 causes the entire testing fixture 2 and the testing frame 19 to shift to the right. Since one end of the testing frame 19 extends into the swing frame 15 in the vertical plane, and the part of the testing frame 19 extending into the swing frame 15 is disc-shaped, the interior of the swing frame 15 and the... The disc portion of the test fixture 19 is slidably connected by a spring. While the axial movement of the test fixture 19 is restricted by the swing frame 15, the test fixture 19 is suspended inside the swing frame 15 by the spring built into the swing frame 15. This allows the test fixture 19 to shift to the right along with the test fixture 2 while resisting the spring tension. The cooperation between the swing frame 15 and the rotating fixture 12 achieves coarse positioning of the insertion accuracy, while the cooperation between the test fixture 19 and the swing frame 15 achieves fine positioning of the insertion accuracy of the test fixture 2. This improves the insertion accuracy of the test fixture 2 and the filter interface, enhances the connection reliability during RF testing, and reduces the impact of insertion loss drift, etc. When the testing fixture 2 extends out of the testing frame 19, the guide block 25 on the testing frame 19 moves in the spiral groove 24, driving the testing fixture 2 to slowly and steadily extend and contact the filter interface in a spiral feeding manner. This can achieve flexible and progressive docking, avoiding the instantaneous impact and rigid collision caused by the traditional direct push structure. It effectively prevents the conductors and conductive contacts inside the interface from deforming, shifting, or plating damage due to excessive force, thus protecting the integrity of the filter interface structure and the stability of its electrical performance from the root. Furthermore, the helical motion has self-locking and micro-feed characteristics, which can precisely control the contact depth and contact pressure, so that the test fixture 2 and the conductive contacts inside the interface can achieve uniform and sufficient surface contact, significantly reduce contact resistance, ensure RF conduction consistency, reduce insertion loss drift, abnormal return loss and other problems, and improve the accuracy and repeatability of RF test data. Moreover, the spiral feed motion trajectory can naturally achieve centering. Even if there is a slight positional deviation in the interface, the coaxiality can be automatically corrected during the screwing process to ensure that the detection fixture 2 is aligned with the center of the interface, further improving contact stability and preventing signal jumps, intermittent open circuits, and other phenomena caused by misalignment or poor connection. During insertion, the air pump supplies air to the test frame 19 through the air pipe 23. The clean gas in the test frame 19 flows and blows through the nozzle 27 to the test connection block 26 in the test fixture 2. The clean gas first flows through the test connection block 26 in the test fixture 2 and then blows to the interface, and finally exits from the hole in the interface. This cleans the electrical components before insertion, improves cleanliness, and reduces the influence of impurities. The test connection block 26 and the test fixture 2 are slidably connected by a spring, which plays a buffering role and avoids rigid contact between the test connection block 26 and the conductive components of the interface, which could lead to wear or bending. Most of the conductive components inside the filter interface are either sheet-like plugs or columnar connections tightened by bolts. During plugging, the conductive components of the filter interface press against the arc plate 29. The arc plate 29 drives the slide rod 28 to compress the spring and shorten it. At the same time, the detection fixture 2 drives the arc plate 29 to move spirally through the slide rod 28 to rub against the conductive components of the filter interface. Impurities on the conductive components are removed by friction. During the friction impurity removal process, the arc plate 29 is in contact with the surface of the conductive components throughout the process due to the tension of the spring, completing the full-angle impurity removal work of the conductive components of the filter interface, improving cleanliness, and thus improving the stability of plugging during testing. By setting the grinding strip 3, which is a conventional abrasive that does not easily shed slag, the friction between the arc plate 29 and the conductive parts is increased, and hard impurities such as oxide scale on the conductive parts are removed, further improving the cleanliness. By setting the connecting piece 31, which is arc-shaped and made of a flexible conductive metal material, such as highly conductive copper, during insertion, while the conductive component of the filter interface contacts the detection connecting block 26, the arc-shaped connecting piece 31 bends towards the center, and the arc surface of the connecting piece 31 adheres to the surface of the conductive component, increasing the contact area and improving the conductivity, thereby improving the stability of insertion during detection.

[0025] Example 3: Based on Embodiment 2, one end of the arc plate 29 is provided with a cleaning plate 32, and the cleaning plate 32 is made of insulating material. The cleaning plate 32 contacts the end of the detection connection block 26. The detection fixture 2 has a protruding ring 33 inside, and the protruding ring 33 is located on one side of the connecting piece 31 and contacts the connecting piece 31; The cross-section of the convex ring 33 is trapezoidal, and the inner ring of the convex ring 33 is provided with a lubricating plating layer.

[0026] Specific workflow: By setting the cleaning plate 32, when the detection connecting block 26 is not inserted, it extends into the arc-shaped plate enclosure by spring reset. At this time, the detection connecting block 26 contacts the cleaning plate 32. The cleaning plate 32 shields the detection connecting block 26 from external impurities and wipes the surface of the detection connecting block 26, so that the detection connecting block 26 can be cleaned after each insertion test, improving the repeatability of the test and reducing the impact of contamination on repeated tests. During insertion, the conductive component, the cleaning plate 32 and the detection connecting block 26 are in contact with each other. As the conductive component gradually presses the detection connecting block 26 deeper, the cleaning plate 32 disengages from between the conductive component and the detection connecting block 26. As the cleaning plate 32 disengages, it wipes away impurities from the contact surface of the two, improving the detection effect. By setting the convex ring 33, when the detection connecting block 26 is stationary, it drives the connecting piece 31 to approach the arc plate 29. When the detection connecting block 26 is inserted, the detection connecting block 26 drives the connecting piece 31 to move and contact the convex ring 33. The connecting piece 31 is squeezed by the convex ring 33 and continuously bends towards the center, so that the connecting piece 31 is tightly attached to the surface of the conductive part of the filter interface, thereby improving the insertion stability and thus improving the detection stability. Furthermore, since the cross-section of the convex ring 33 is trapezoidal, the deeper the detection connecting block 26 is inserted, the greater the range of compression of the connecting piece 31 by the convex ring 33. If the conductive component is large, the insertion depth is small, the bending range of the connecting piece 31 is small, and the connecting piece 31 can still make close contact with the conductive component. If the conductive component is small, the insertion depth is large, the bending range of the connecting piece 31 is large, and the small-volume conductive component of the connecting piece 31 makes close contact, improving the compatibility of different interfaces and thus improving practicality. Moreover, by setting a lubricating coating, the friction between the connecting piece 31 and the convex ring 33 is reduced, wear is reduced, and wear impurities are prevented from affecting the insertion.

[0027] Example 4: Based on Embodiment 3, the part of the connecting piece 31 near the detection connecting block 26 is a flat surface, and the part away from the detection connecting block 26 is a curved surface; The testing fixture 2 has a grinding disc 34 slidably connected to one end of the opening via a spring, and the two sides of the grinding disc 34 are inclined.

[0028] Specific workflow: Since the part of the connecting piece 31 near the detection connecting block 26 is a flat surface and the part away from the detection connecting block 26 is a curved surface, the part away from the detection connecting block 26 is a curved surface and is not easily bent by the protruding ring 33. Therefore, when the connecting piece 31 is under pressure, the flat surface part is used as the bending point to bend, thereby achieving the purpose of controlling the bending point of the connecting piece 31 and avoiding the situation where one end of the connecting piece 31 is squeezed and bent, while the other end is not squeezed and elastically recovers away from the conductive component. By setting the polishing disc 34, when the volume of the conductive component of the filter interface is small, the polishing disc 34 will not contact the conductive component of the filter interface. If the filter interface is a cylindrical conductive component connected by a nut, then during insertion, the inclined surface of the polishing disc 34 contacts the nut on the conductive component of the filter. After compression, the spring completes one undulating movement, moving from one side of the nut to the other side. At the same time, the detection clamp 2 drives the polishing disc 34 to move spirally to polish the nut, improve the surface cleanliness of the nut, and avoid the oxide scale and other impurities on the nut affecting the electrical conduction effect when tightening the nut connection later.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full communication filter testing system, comprising a loading / unloading control unit, a testing platform (1), a performance testing unit, and a software control system; characterized in that, Also includes: A pneumatic clamp (11) is symmetrically distributed on the testing table (1). A rotating clamp (12) is rotatably connected to the end of the pneumatic clamp (11), and the rotating clamp (12) is connected to the rotating motor (13) installed on the pneumatic clamp (11). The ends of the rotating clamp (12) contact the filter on both sides away from the interface. A displacement rod (14) is slidably connected to the pneumatic clamp (11) by a spring. A swing frame (15) is symmetrically distributed on both sides of the pneumatic clamp (11), and the swing frame (15) is rotatably connected to the test table (1) through a swing motor (16). The side of the swing frame (15) away from the rotation is a telescopic structure, and a longitudinal adjustment rod (17) is provided in the telescopic structure. The side of the swing frame (15) is disconnected from the rotation part and slides against each other. A transverse adjustment rod (18) is screwed onto the rotation part of the swing frame (15), and one side of the transverse adjustment rod (18) is threadedly connected to the side of the swing frame (15). A test frame (19) is slidably connected to the swing frame (15), and a test fixture (2) of a performance test unit is provided on the test frame (19). The test frame (19) and the test fixture (2) are connected by an electric push rod (2). 1) Connected, and visual inspection probes are distributed on the swing frame (15); the rotating part and the side part of the swing frame (15) are separated from each other. When the filter size is small, the longitudinal adjustment rod (17) is twisted, the swing frame (15) of the telescopic structure is shortened, and the swing frame (15) drives the inspection frame (19) to approach the pneumatic clamp (11); when the filter interfaces are gathered on the same side, the two swing frames (15) swing towards each other. The lower swing frame (15) is adjusted into a step shape by the horizontal adjustment rod (18), so that the lower inspection frame (19) is lowered. The same method is used to raise the upper inspection frame (19). The two swing frames (15) drive the inspection frame (19) to separate up and down, and align the upper and lower rows of interfaces of the filter gathered on the same side.

2. The full communication filter detection system according to claim 1, characterized in that: The displacement rod (14) has balls evenly distributed on its flat end, and a nozzle (22) is provided between adjacent balls. The nozzle (22) is connected to the air pump in the detection system. One nozzle (22) draws in air and the other nozzle (22) blows air. One end of the detection frame (19) extends into the swing frame (15), and the part of the detection frame (19) that extends into the swing frame (15) is disc-shaped. The inside of the swing frame (15) and the disc part of the detection frame (19) are slidably connected by a spring. The swing frame (15) is provided with a vent pipe (23), and one end of the vent pipe (23) is connected to the detection frame (19). The detection fixture (2) is tubular and has a spiral groove (24) on its outer side. The detection frame (19) is provided with a guide block (25) that extends into the spiral groove (24). The end of the electric push rod (21) is rotatably connected to one end of the detection fixture (2), and the other end of the detection fixture (2) is trumpet-shaped.

3. The full communication filter detection system according to claim 2, characterized in that: A detection connection block (26) is slidably connected to one end wall of the detection fixture (2) by a spring. The detection connection block (26) is the interface of the matching filter. A spray hole (27) is provided inside the detection fixture (2). The spray hole (27) is connected to the inside of the detection frame (19). A slide rod (28) is slidably connected to the inner wall of the detection fixture (2) by a spring. The slide rod (28) is distributed in a ring around the axis of the detection fixture (2). An arc plate (29) is provided at the end of the slide rod (28). The end of the arc plate (29) near the opening of the detection fixture (2) is inclined.

4. The full communication filter detection system according to claim 3, characterized in that: The surface of the arc plate (29) near the center of the detection fixture (2) is uniformly provided with grinding strips (3), which are arranged in a spiral shape.

5. The full communication filter detection system according to claim 4, characterized in that: The detection connection block (26) has a connecting piece (31) at one end, and the connecting piece (31) is arc-shaped and made of an elastic conductive metal material.

6. The full communication filter detection system according to claim 5, characterized in that: One end of the arc plate (29) is provided with a cleaning plate (32), and the cleaning plate (32) is made of insulating material. The cleaning plate (32) contacts the end of the detection connection block (26).

7. The full communication filter detection system according to claim 6, characterized in that: The detection fixture (2) has a protruding ring (33) inside, and the protruding ring (33) is located on one side of the connecting piece (31) and contacts the connecting piece (31).

8. The full communication filter detection system according to claim 7, characterized in that: The cross-section of the convex ring (33) is trapezoidal, and the inner ring of the convex ring (33) is provided with a lubricating coating.

9. The full communication filter detection system according to claim 8, characterized in that: The part of the connecting piece (31) near the detection connecting block (26) is a flat surface, and the part away from the detection connecting block (26) is a curved surface.

10. A full communication filter detection system according to claim 9, characterized in that: The testing fixture (2) has a grinding disc (34) slidably connected to one end of the opening via a spring, and the grinding disc (34) is inclined on both sides.

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