A multifunctional detection device and method for antenna radiating elements

Abstract

The present invention discloses a multifunctional detection device and method for an antenna radiation unit, comprising: a workbench for supporting the entire device; a three-axis motion system, a carrier positioning and clamping system, a visual inspection system, a flatness inspection system and a resistance inspection system arranged on the workbench; a carrier for carrying the antenna radiation unit; the three-axis motion system for driving the carrier to shift and provide the motion required for the inspection; the carrier positioning and clamping system for fixing the carrier; a visual inspection system for inspecting the appearance of the antenna radiation unit; a flatness inspection system for inspecting the deformation of the antenna radiation unit; and a resistance inspection system for inspecting the insulation resistance between the microstrip patch and the metal base in the antenna radiation unit. The present invention integrates multiple functions such as carrier adjustment, appearance inspection, flatness inspection, and resistance inspection, realizes multiple processes required for the automatic assembly of the antenna radiation unit, and has high inspection efficiency.

Description

Technical Field

[0001] This invention relates to the field of antenna radiating element detection, and more specifically to a multifunctional integrated detection device and method for antenna radiating elements. Background Technology

[0002] The antenna radiating element is a microstrip antenna on a thin dielectric substrate. One side has a thin metal layer attached as a ground plane, and the other side has a metal microstrip patch of a certain shape made using photolithography or other methods. The patch is fed using a microstrip line and an axial probe. Compared with conventional microwave antennas, microstrip antennas have advantages such as small size, low cost, light weight, low profile, easy conformal integration with the carrier, small scattering cross section, and wide beamwidth.

[0003] The antenna radiating element consists of a microstrip board, a metal base, and an RF connector. During assembly, extensive optical, mechanical, and electrical tests are required to ensure product quality. After the microstrip board and metal base are assembled and soldered in the carrier, the carrier cover plate needs to be removed, the position of the carrier's middle plate adjusted, and a comprehensive inspection of the antenna radiating element's post-soldering appearance, post-soldering deformation, and insulation resistance between the microstrip patch and the metal base conducted.

[0004] The above process is quite complex, and manual operation is labor-intensive and time-consuming. If separate automated devices are designed for each step, including vehicle adjustment devices, vision inspection devices, flatness inspection devices, insulation resistance inspection devices, etc., the whole set of devices will be large in size, costly, and the process will be complicated. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated device for automated carrier adjustment and multi-functional detection of antenna radiating elements, which can complete the above operations in a single clamping condition and ensure the safety and reliability of the operation process.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A multifunctional testing device for antenna radiating elements includes: a worktable 10 for supporting the entire device; a three-axis motion system, a carrier positioning and clamping system, a vision inspection system, a flatness inspection system, and a resistance inspection system mounted on the worktable 10; a carrier 17 for carrying antenna radiating elements 21; the three-axis motion system for driving the carrier to move and providing the motion required for testing; the carrier positioning and clamping system for fixing the carrier 17; the vision inspection system for inspecting the appearance of the antenna radiating elements 21; the flatness inspection system for inspecting the deformation of the antenna radiating elements 21; and the resistance inspection system for inspecting the insulation resistance between the microstrip patch 21c and the metal base 21b in the antenna radiating elements 21.

[0008] Optionally, it further includes: a carrier gripping system and a cover plate buffering system disposed on the workbench 10; the carrier 17 includes a cover plate 17a, a middle plate 17b, and a bottom plate 17c arranged sequentially from top to bottom; the antenna radiating unit 21 is installed in the middle plate 17b; the bottom plate 17c is provided with a high pin 17e, a low pin 17f, and a positioning pin 17d; the positioning pin 17d is used for positioning during the welding of the microstrip board 21a and the metal base 21b in the antenna radiating unit 21; during the welding of the microstrip board 21a and the metal base 21b, the middle plate 17b contacts the low pin 17f; after welding, the middle plate 17b is moved to contact the high pin 17e; the carrier gripping system is used to adjust the position of the cover plate 17a and the middle plate 17b; the cover plate buffering system is used to store the cover plate 17a.

[0009] Optionally, the three-axis motion system includes: a T-shaped support 8, an X-axis robotic arm 5, a Y-axis robotic arm 3, a Z-axis robotic arm 1, an auxiliary sliding support mechanism 16, and a fixed frame 11; the T-shaped support 8 is fixed on the worktable 10; the X-axis robotic arm 5 is mounted on the T-shaped support 8; one end of the Y-axis robotic arm 3 is mounted on the movable slider of the X-axis robotic arm 5, and the other end is mounted on the auxiliary sliding support mechanism 16, allowing it to move back and forth along the X-axis robotic arm 5; the Z-axis robotic arm 1 is mounted on the movable slider of the Y-axis robotic arm 3, allowing it to move back and forth along the Y-axis robotic arm 3; the fixed frame 11 is mounted on the movable slider of the Z-axis robotic arm 1, allowing it to move up and down along the Z-axis robotic arm 1.

[0010] Optionally, the carrier positioning and clamping system includes a fixed pressure plate 20 and a lifting mechanism 18; the first end of the fixed pressure plate 20 is fixed on the worktable 10, and the second end is used to limit the carrier 17 from above; the lifting mechanism 18 is disposed on the worktable 10, located between the fixed pressure plates 20, and is used to lift the carrier 17 upward until it contacts the second end of the fixed pressure plate 20 to fix the carrier 17.

[0011] Optionally, the vehicle gripping system is located in the middle of the fixed frame 11 and includes: a gripper 4 and a transverse gripping cylinder 2; the gripper 4 is connected to the push rod of the transverse gripping cylinder 2, and the transverse gripping cylinder 2 drives the gripper 4 to grip the cover plate 17a and the middle plate 17b.

[0012] Optionally, the cover plate buffer system includes: a shelf 6, a positioning post 7, and a lifting mechanism 9; the shelf 6 is used to store the removed cover plate 17a; the positioning post 7 is used to position the cover plate 17a; and the lifting mechanism 9 is used to drive the shelf 6 and the positioning post 7 to move up and down.

[0013] Optionally, the visual inspection system is installed on the side of the fixed frame 11 and includes a camera 12 and a lens 14; the flatness detection system is installed on the side of the fixed frame 11 and is arranged on the same side as the visual inspection system; the flatness detection system includes a laser displacement sensor 13 and a first lifting cylinder 22; the first lifting cylinder 22 is installed on the side of the fixed frame 11; the laser displacement sensor 13 is connected to the push rod of the first lifting cylinder 22.

[0014] Optionally, the resistance detection system is mounted on the side of the fixed frame 11, on the same side as the vision inspection system; the resistance detection system includes a second lifting cylinder 23, an upper probe mechanism 15, a third lifting cylinder 24, a lower probe mechanism 19, probe leads 25, a switch matrix 26, instrument leads 27, and a digital multimeter 28; the second lifting cylinder 23 is mounted on the side of the fixed frame 11; the upper probe mechanism 15 is connected to the push rod of the second lifting cylinder 23; the third lifting cylinder 24 is mounted on the worktable 10. The lower probe mechanism 19 is connected to the push rod of the third lifting cylinder 24; the upper probe mechanism 15 and the lower probe mechanism 19 are connected to the switch matrix 26 through the probe wire 25; the switch matrix 26 is connected to the digital multimeter 28 through the instrument wire 27; the upper probe mechanism 15 and the lower probe mechanism 19 adopt a dual-probe structure, and the spacing between the dual probes is the same as the channel spacing of the antenna radiating unit 21. The insulation resistance data of two adjacent channels can be continuously detected by switching through the switch matrix 26.

[0015] On the other hand, the present invention also provides a method for detecting an antenna radiating element, which is based on the detection device described above and includes: Step 1: The carrier 17 is fixed on the worktable 10 by a carrier positioning and clamping system.

[0016] Step 2: The gripper 4 moves to the gripping position and grips the cover plate 17a.

[0017] Step 3: The lifting mechanism 9 drives the shelf 6 and the positioning column 7 to rise from their initial positions, and the gripper 4 places the cover plate 17a on the shelf 6.

[0018] Step 4: The lifting mechanism 9 drives the shelf 6 and the positioning column 7 to descend to the initial position.

[0019] Step 5: The gripper 4 moves to the gripping position and grips the middle plate 17b, making contact with the high pin 17e.

[0020] Step 6: Drive the camera 12 and the lens 14 to the detection height, take pictures of the microstrip patch 21c of each channel in the antenna radiation unit 21, and detect appearance defects through image recognition. After the current detection point is completed, move to the next detection point and repeat the picture taking until all channels are detected.

[0021] Step 7: The laser displacement sensor 13 moves above the detection point and moves downward to the detection position under the action of the push rod of the first lifting cylinder 22 to perform height detection. After the current detection point is completed, the push rod of the first lifting cylinder 22 retracts to the initial position. The laser displacement sensor 13 moves to the next detection point and repeats the detection process until all channels are detected. The maximum height difference of all detection points is calculated to obtain the flatness data.

[0022] Step 8: The lower probe mechanism 19 moves upward under the action of the push rod of the third lifting cylinder 24, so that the lower probe 19a contacts the base plate 17c.

[0023] Step 9: The upper probe mechanism 15 moves above the detection point. Under the action of the push rod of the second lifting cylinder 23, the upper probe mechanism 15 moves downward to the detection position, so that the upper probe 15a contacts the microstrip patch 21c, and the resistance between the upper probe 15a and the lower probe 19a is detected. After the current detection point is detected, the push rod of the second lifting cylinder 23 retracts to the initial position, and the upper probe mechanism 15 moves to the next detection point. The detection process is repeated until all channels are detected.

[0024] Step 10: The push rod of the third lifting cylinder 24 retracts to its initial position.

[0025] Optionally, the set distance for appearance inspection is 50mm to 70mm, the set distance for flatness inspection is 30mm to 40mm, the lifting stroke of the lifting mechanism 9 is 100mm to 120mm, the push rod stroke of the first lifting cylinder 22 is 20mm to 30mm, the push rod stroke of the second lifting cylinder 23 is 40mm to 50mm, and the push rod stroke of the third lifting cylinder 24 is 10mm to 15mm. During inspection, the upper probe 15a and the lower probe 19a are elastically pressed against the surface being tested, with a pressing force of 0.5N to 1N.

[0026] This invention has at least one of the following technical effects:

[0027] The present invention provides a multi-functional integrated testing device for antenna radiating elements, which can automatically complete multiple functions such as carrier adjustment, appearance inspection, flatness inspection, and insulation resistance inspection under a single clamping condition. Through optimized structural design, the interference problem under different operating conditions is solved, the development cost of the device is reduced, and the testing efficiency is improved.

[0028] This invention utilizes a variety of detection technologies, including optics, mechanics, and electronics, to complete functions such as carrier adjustment, antenna radiating element appearance inspection, flatness inspection, and insulation resistance inspection under a single clamping condition, greatly reducing the development cost of automated devices.

[0029] This invention utilizes multiple cylinders to control the positions of the detection system and the cover plate buffer system, effectively solving the structural interference problem during carrier adjustment and product inspection, and ensuring the safe and stable operation of the device.

[0030] This invention employs a resistance detection method with dual-probe floating and clamping, which avoids damage to the microstrip patch of the antenna radiating element by the probes and has high detection efficiency. Attached Figure Description

[0031] Figure 1 This is a front view of an antenna radiation structure provided in an embodiment of the present invention;

[0032] Figure 2 This is a bottom view of an antenna radiation structure provided in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the carrier structure of an antenna radiating element provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the overall structure of an antenna radiating element carrier adjustment and multifunctional detection device according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure for removing the cover plate of an antenna radiating unit carrier adjustment and multifunctional detection device according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of an antenna radiating element carrier adjustment and multifunctional detection device with a middle plate adjustment according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of a multi-functional detection system for adjusting and detecting antenna radiating element carriers, provided in an embodiment of the present invention.

[0038] Figure 8 This is a schematic diagram of the resistance detection system of an antenna radiating element carrier adjustment and multifunctional detection device provided in an embodiment of the present invention. Detailed Implementation

[0039] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the multifunctional detection device and method for antenna radiation elements proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0040] This invention mainly solves the problems of carrier adjustment and quality inspection after the antenna radiating element is welded. Figure 1 and Figure 2 This is a schematic diagram of the antenna radiating element 21. Its main body is formed by welding a microstrip board 21a and a metal base 21b. An array of metal microstrip patches 21c is provided on the surface of the microstrip board 21. The microstrip patches 21c and the metal base 21b are required to be insulated. The antenna radiating element 21 adopts an array structure, with each radiating element being a channel. The distance between each channel is the same. There are many types of antenna radiating elements, including single-row and dual-row products, such as... Figure 2 The product shown is a dual-row product with multiple channels in each row. During the soldering process, the antenna radiating unit 21 may experience overall warping, short circuits between the microstrip patch 21c and the metal base 21b, and defects such as solder overflow, indentations, and scratches on the surface of the microstrip patch 21c. Therefore, after soldering, it is necessary to perform flatness testing, insulation resistance testing, and appearance testing on each channel of the antenna radiating unit 21.

[0041] like Figure 3 As shown, Figure 3 This is a schematic diagram of the antenna radiating element 21 being mounted in the carrier 17. The carrier 17 includes a cover plate 17a, a middle plate 17b, and a base plate 17c. The antenna radiating element 21 is mounted in the middle plate 17b. The base plate 17c is provided with positioning pins 17d for positioning when the microstrip board 21a and the metal base 21b are welded. The base plate 17c is also provided with a high-position pin 17e and a low-position pin 17f. When the microstrip board 21a and the metal base 21b are welded, the middle plate 17b contacts the low-position pin 17f. After welding, the middle plate 17b needs to be moved to contact the high-position pin 17e.

[0042] In this embodiment, the high pin 17e and the low pin 17f can be arranged in parallel or coaxially, and two pairs can be arranged, respectively near the two ends of the base plate 17c. The positioning pin 17d is located between the two pairs of high pins 17e and low pins 17f.

[0043] like Figure 4 As shown, Figure 4 The overall structure diagram of the antenna radiating unit carrier adjustment and multi-functional testing device includes: a worktable (10), a three-axis motion system, a carrier positioning and clamping system, a carrier gripping system, a cover plate buffer system, a vision inspection system, a flatness inspection system, and a resistance inspection system. The worktable 10 supports the entire device, and all other systems are directly or indirectly mounted on the worktable 10. The three-axis motion system is used to realize the movements required for carrier adjustment and testing. The three-axis motion system is used to realize various movements, including: T-shaped support 8, X-axis robotic arm 5, Y-axis robotic arm 3, auxiliary sliding support mechanism 16, Z-axis robotic arm 1, and fixed frame 11. The T-shaped support 8 is fixed on the worktable 10, and the X-axis robotic arm 5 is set on the T-shaped support 8. One end of the Y-axis robotic arm 3 is mounted on the sliding block of the X-axis robotic arm 5, and the other end is mounted on the auxiliary sliding support mechanism 16, and can move back and forth along the X-axis robotic arm 5. The Z-axis robotic arm 1 is mounted on the sliding block of the Y-axis robotic arm 3 and can move back and forth along the Y-axis robotic arm 3. The fixed frame 11 is mounted on the sliding block of the Z-axis robotic arm 1 and can move up and down along the Z-axis robotic arm 1.

[0044] The vehicle positioning and clamping system is used to secure the vehicle 17.

[0045] The vehicle grabbing system is used to adjust the position of the vehicle's cover plate and the vehicle's center plate.

[0046] The cover plate buffer system is located on the worktable 10, next to the carrier positioning and clamping system, and the two are arranged in the same direction as the X-axis extension direction; the cover plate buffer system is used to store the cover plate of the carrier 17.

[0047] Visual inspection systems are used to inspect the appearance of antenna radiating elements.

[0048] The flatness testing system is used to detect the deformation of the antenna radiating element; the resistance testing system is used to detect the insulation resistance between the microstrip patch of the antenna radiating element and the metal base.

[0049] like Figure 5 As shown, Figure 5This is a schematic diagram of the structure for removing the cover plate of the antenna radiating unit carrier. Before testing, the carrier 17 must be fixed and the cover plate 17a must be removed. The carrier 17 is placed on the lifting mechanism 18, and the fixing plate 20 limits the carrier 17 from above. The lifting mechanism 18 lifts the carrier 17 upward until it contacts the fixing plate 20, thereby fixing the carrier 17.

[0050] After vehicle 17 is secured, the vehicle grabbing system removes the vehicle cover 17a and places it on the cover buffer system.

[0051] The carrier gripping system is installed in the middle of the fixed frame 11, including grippers 4 and transverse gripping cylinder 2. The grippers 4 are connected to the push rod of the transverse gripping cylinder 2. The carrier gripping system moves to the gripping station with the three-axis motion system, and the transverse gripping cylinder 2 retracts, so that the grippers 4 grip both ends of the cover plate 17a.

[0052] The cover plate buffer system includes a shelf 6, a positioning post 7, and a lifting mechanism 9. When the gripper 4 grabs the cover plate 17a, the lifting mechanism 9 is used to raise the shelf 6 and the positioning post 7 so that the gripper 4 can place the cover plate 17a. The gripper 4 positions the carrier cover plate 17a on the shelf 6 through the positioning post 7, and the lifting mechanism 9 lowers it back to the initial height to avoid the cover plate buffer system interfering with subsequent movements.

[0053] like Figure 6 As shown, Figure 6 This is a schematic diagram of the structure for adjusting the middle plate of the antenna radiating element carrier. To avoid the metal positioning pin 17d in the carrier 17 affecting the resistance detection of the antenna radiating element 21, the middle plate 17b of the carrier needs to be adjusted from a low position to a high position after removing the cover plate 17a. The carrier gripping system moves to the gripping station with the three-axis motion system, the lateral clamping cylinder 2 retracts, and the gripper 4 grips both ends of the cover plate 17a and places it on the shelf 6. Then, it moves to the gripping station with the three-axis motion system, so that the gripper 4 adjusts the middle plate 17b from contact with the low position pin 17f to contact with the high position pin 17e, so that the middle plate 17b is separated from the metal positioning pin 17d.

[0054] like Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of a multifunctional inspection system for antenna radiating elements. The inspection system includes a vision inspection system, a flatness inspection system, and a resistance inspection system. The vision inspection system is mounted on the side of the fixed frame 11 and includes a camera 12 and a lens 14. It is used to take pictures of the microstrip patch 21c of each channel of the antenna radiating element 21 and to detect appearance defects on the surface of the antenna radiating element 21 through image recognition.

[0055] The flatness detection system includes a laser displacement sensor 13 and a first lifting cylinder 22. The first lifting cylinder 22 is mounted on the side of the fixed frame 11, and the laser displacement sensor 13 is connected to the push rod of the first lifting cylinder 22. During testing, feature points are selected on the microstrip patch 21c of each channel on the surface of the antenna radiating unit 21 for detection. The actual height of the laser displacement sensor 13 and each channel is obtained. The flatness data, i.e., the deformation amount, is obtained by calculating the maximum height difference between the sampling points (feature points).

[0056] The resistance detection system includes: a second lifting cylinder 23, an upper probe mechanism 15, a third lifting cylinder 24, a lower probe mechanism 19, probe leads 25, a switch matrix 26, instrument leads 27, and a digital multimeter 28; the second lifting cylinder 23 is mounted on the side of the fixed frame 11; the upper probe mechanism 15 is connected to the push rod of the second lifting cylinder 23; the third lifting cylinder 24 is mounted on the worktable 10; and the lower probe mechanism 19 is connected to the push rod of the third lifting cylinder 24.

[0057] Furthermore, in non-detection states such as carrier adjustment operations, the push rods of the first lifting cylinder 22, the second lifting cylinder 23, and the third lifting cylinder 24 are all in the retracted position, and each detection system is 20mm to 30mm higher than the bottom surface of the gripper 4, thereby ensuring that each detection device does not interfere with other components of the device in the non-detection state; when performing appearance inspection, flatness inspection, or resistance inspection, the bottom surface of the gripper 4 is always more than 5mm higher than the carrier 17, thereby ensuring that the gripper 4 does not interfere with the carrier 17 during the inspection process.

[0058] like Figure 8 As shown, Figure 8 This is a schematic diagram of the structure for testing the resistance of an antenna radiating element. The upper probe 15a of the upper probe mechanism 15 is pressed against the metal microstrip patch 21c of the microstrip board 21a of the antenna radiating element 21. The metal base 21b of the antenna radiating element 21 contacts the metal carrier plate 17b, which in turn contacts the metal high-position pin 17e, which is mounted on the metal carrier base plate 17c. The lower probe 19a of the lower probe mechanism 19 is pressed against the carrier base plate 17c, thus ensuring that the metal base 21b and lower probe 19a of the antenna radiating element 21 form a path, and the microstrip patch 21c of the antenna radiating element 21 also forms a path with the upper probe 15a. The upper probe 15a of the upper probe mechanism 15a and the lower probe 19a of the lower probe mechanism 19 are connected to the switch matrix 26 via probe wires 25. The switch matrix 26 is connected to the digital multimeter 28 via instrument wires 27. By measuring the resistance between the upper probe 15a of the upper probe mechanism 15 and the lower probe 19a of the lower probe mechanism 19 using a digital multimeter 28, the insulation resistance data of the corresponding detection channel of the antenna radiation unit 21 can be obtained.

[0059] This embodiment provides a method for detecting antenna radiating elements. This method is based on the detection device described above and includes:

[0060] Step 1: The carrier 17 is fixed on the worktable 10 by the carrier positioning and clamping system;

[0061] Step 2: The gripper 4 moves to the gripping position and grips the cover plate 17a;

[0062] Step 3: The lifting mechanism 9 drives the shelf 6 and the positioning column 7 to rise from their initial positions, and the gripper 4 places the cover plate 17a on the shelf 6;

[0063] Step 4: The lifting mechanism 9 drives the shelf 6 and the positioning column 7 to descend to the initial position;

[0064] Step 5: The gripper 4 moves to the gripping position and grips the middle plate 17b, making contact with the high pin 17e;

[0065] Step 6: Drive the camera 12 and the lens 14 to the detection height, take pictures of the microstrip patch 21c of each channel in the antenna radiating unit 21, and detect appearance defects through image recognition. After the current detection point is completed, move to the next detection point and repeat the picture taking until all channels are detected.

[0066] Step 7: The laser displacement sensor 13 moves above the detection point and moves downward to the detection position under the action of the push rod of the first lifting cylinder 22 to perform height detection. After the current detection point is completed, the push rod of the first lifting cylinder 22 retracts to the initial position. The laser displacement sensor 13 moves to the next detection point and repeats the detection process until all channels are detected. The maximum height difference of all detection points is calculated to obtain the flatness data.

[0067] Step 8: The lower probe mechanism 19 moves upward under the action of the push rod of the third lifting cylinder 24, so that the lower probe 19a contacts the base plate 17c;

[0068] Step 9: The upper probe mechanism 15 moves above the detection point. Under the action of the push rod of the second lifting cylinder 23, the upper probe mechanism 15 moves downward to the detection position, so that the upper probe 15a contacts the microstrip patch 21c, and the resistance between the upper probe 15a and the lower probe 19a is detected. After the detection of the current detection point is completed, the push rod of the second lifting cylinder 23 retracts to the initial position, and the upper probe mechanism 15 moves to the next detection point. The detection process is repeated until all channels are detected.

[0069] Step 10: The push rod of the third lifting cylinder 24 retracts to its initial position.

[0070] Furthermore, the set distance for appearance inspection is 50mm to 70mm, the set distance for flatness inspection is 30mm to 40mm, the lifting stroke of the lifting mechanism 9 is 100mm to 120mm, the push rod stroke of the first lifting cylinder 22 is 20mm to 30mm, the push rod stroke of the second lifting cylinder 23 is 40mm to 50mm, and the push rod stroke of the third lifting cylinder 24 is 10mm to 15mm.

[0071] Furthermore, the upper probe 15a of the upper probe mechanism 15 and the lower probe 19a of the lower probe mechanism 19 are equipped with springs inside, which can elastically press against the surface to be measured. The pressing force during resistance detection is 0.5N to 1N, which ensures good contact between the probe and the surface to be measured, and also prevents excessive pressing force from causing indentations on the surface of the microstrip patch 21c of the antenna radiating unit 21.

[0072] Furthermore, the upper probe mechanism 15 and the lower probe mechanism 19 adopt a dual-probe structure, with the spacing between the two probes being the same as the channel spacing of the antenna radiating unit 21. When the antenna radiating unit 21 is a single-row product, only one set of probes is effective, and the insulation resistance data of one channel can be detected at a time. When the antenna radiating unit 21 is a double-row product, the two upper probes 15a of the upper probe mechanism 15 contact the microstrip patches 21c of the two parallel channels respectively, and the detection channels are switched through the switch matrix 26, thereby obtaining the insulation resistance data of two adjacent channels in one resistance detection process. The dual-probe structure design can effectively shorten the resistance detection time and has good versatility, applicable to the resistance detection of various specifications of single-row or double-row array products.

[0073] In summary, the detection device provided by this invention includes a worktable, a three-axis motion system, a carrier positioning and clamping system, a carrier gripping system, a cover plate buffer system, a vision inspection system, a flatness detection system, and a resistance detection system. The worktable supports the entire device. The three-axis motion system enables the carrier to move and perform the required movements for detection. The carrier positioning and clamping system clamps and secures the carrier. The carrier gripping system removes the carrier cover plate and adjusts the carrier position. The cover plate buffer system stores the removed cover plate. The vision inspection system inspects the appearance of the antenna radiating element. The flatness detection system detects the post-weld deformation of the antenna radiating element. The resistance detection system detects the insulation resistance between the microstrip patch of the antenna radiating element and the base. This invention integrates multiple functions such as carrier adjustment, appearance inspection, flatness inspection, and resistance inspection into one device. It can realize multiple processes required for the automatic assembly of antenna radiating units in one device, and has the characteristics of high automation and high inspection efficiency. This invention integrates multiple functions such as carrier adjustment, appearance inspection, flatness inspection, and resistance inspection into one device, and has good versatility. It can be applied to antenna radiating unit products of various specifications, and has high operating efficiency and safety and reliability.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] In the description of this invention, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0076] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0077] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0078] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A multifunctional detection device for antenna radiation unit, characterized in that: include: A workbench (10) for supporting the entire device; A three-axis motion system, a carrier positioning and clamping system, a visual inspection system, a flatness inspection system and a resistance inspection system are arranged on the workbench (10); A carrier (17) for carrying an antenna radiation unit (21); The three-axis motion system is used to drive the carrier to shift and provide the motion required for detection; The carrier positioning and clamping system is used to fix the carrier (17); The visual inspection system is used to inspect the appearance of the antenna radiation unit (21); The flatness detection system is used to detect the deformation amount of the antenna radiation unit (21); The resistance detection system is used to detect the microstrip patch (21c) in the antenna radiation unit (21) The insulation resistance between the metal base (21b); and further comprising: a carrier grabbing system and a cover plate buffering system arranged on the workbench (10); The carrier (17) comprises a cover plate (17a), a middle plate (17b) and a bottom plate (17c) which are arranged in sequence from top to bottom; The antenna radiation unit (21) is installed in the middle plate (17b); The bottom plate (17c) is provided with a high-position pin (17e), a low-position pin (17f) and a positioning pin (17d); The positioning pin (17d) is used for positioning when welding the microstrip plate (21a) and the metal base (21b) in the antenna radiation unit (21); When the microstrip plate (21a) and the metal base (21b) are welded, the middle plate (17b) contacts the low-position pin (17f); after welding, the middle plate (17b) is moved to contact the high-position pin (17e); The carrier grabbing system is used to adjust the positions of the cover plate (17a) and the middle plate (17b); and the cover plate buffering system is used to store the cover plate (17a).

2. The multifunctional detection device for antenna radiation unit according to claim 1, characterized in that: The three-axis motion system comprises: a T-shaped support (8), an X-axis mechanical arm (5), a Y-axis mechanical arm (3), a Z-axis mechanical arm (1), an auxiliary sliding support mechanism (16) and a fixed frame (11); The T-shaped support (8) is fixed on the workbench (10); The X-axis mechanical arm (5) is arranged on the T-shaped support (8); One end of the Y-axis mechanical arm (3) is mounted on the moving slider of the X-axis mechanical arm (5), and the other end is mounted on the auxiliary sliding support mechanism (16), and can move forward and backward along the X-axis mechanical arm (5); The Z-axis mechanical arm (1) is mounted on a movable slider of the Y-axis mechanical arm (3) and can move forward and backward along the Y-axis mechanical arm (3); The fixed frame (11) is mounted on a movable slider of the Z-axis mechanical arm (1) and can perform lifting and lowering motion along the Z-axis mechanical arm (1).

3. The multifunctional detection device for antenna radiation unit according to claim 2, characterized in that: The carrier positioning and clamping system comprises a fixed pressure plate (20) and a lifting mechanism (18); the first end of the fixed pressure plate (20) is fixed on the workbench (10), and the second end is used to limit the carrier (17) from above; the lifting mechanism (18) is arranged on the workbench (10), located between the fixed pressure plates (20), and is used to lift the carrier (17) upward until it contacts the second end of the fixed pressure plate (20) to fix the carrier (17).

4. The multifunctional detection device for antenna radiation unit according to claim 3, characterized in that: The carrier grasping system is located in the middle of the fixed frame (11), and comprises: a clamping jaw (4) and a transverse clamping cylinder (2); the clamping jaw (4) is connected to a push rod of the transverse clamping cylinder (2), and the transverse clamping cylinder (2) drives the clamping jaw (4) to grasp the cover plate (17a) and the middle plate (17b).

5. The multifunctional detection device for antenna radiation unit according to claim 4, characterized in that: The cover plate caching system comprises: a shelf (6), a positioning column (7) and a lifting mechanism (9); The shelf (6) is used to store the removed cover (17a); The positioning column (7) is used to position the cover plate (17a); The lifting mechanism (9) is used to drive the shelf (6) and the positioning column (7) to move up and down.

6. The multifunctional detection device for antenna radiation unit according to claim 5, characterized in that: The visual inspection system is installed on the side of the fixed frame (11), and comprises a camera (12) and a lens (14); The flatness detection system is installed on a side of the fixed frame (11) and is arranged on the same side as the visual detection system; The flatness detection system comprises a laser displacement sensor (13) and a first lifting cylinder (22); the first lifting cylinder (22) is installed on the side of the fixed frame (11); and the laser displacement sensor (13) is connected to a push rod of the first lifting cylinder (22).

7. The multifunctional detection device for antenna radiation unit according to claim 6, characterized in that: The resistance detection system is installed on a side of the fixed frame (11) and is arranged on the same side as the visual detection system; The resistance detection system comprises a second lifting cylinder (23), an upper probe mechanism (15), a third lifting cylinder (24), a lower probe mechanism (19), a probe wire (25), a switch matrix (26), an instrument wire (27) and a digital multimeter (28); The second lifting cylinder (23) is installed on the side of the fixed frame (11); The upper probe mechanism (15) is connected to the push rod of the second lifting cylinder (23); The third lifting cylinder (24) is installed on the workbench (10); The lower probe mechanism (19) is connected to the push rod of the third lifting cylinder (24); The upper probe mechanism (15) and the lower probe mechanism (19) are connected to the switch matrix (26) via the probe wires (25); The switch matrix (26) is connected to the digital multimeter (28) via the instrument wire (27); The upper probe mechanism (15) and the lower probe mechanism (19) adopt a double probe structure, the distance between the double probes is the same as the channel distance of the antenna radiation unit (21), and the insulation resistance data of two adjacent channels can be continuously detected by switching through the switch matrix (26).

8. A method for detecting an antenna radiation unit, characterized in that: The detection method is implemented based on the detection device according to claim 7, comprising: Step 1: The carrier (17) is fixed on the workbench (10) by a carrier positioning and clamping system; Step 2: the clamping claw (4) moves to a gripping position to grip the cover plate (17a); Step 3: The lifting mechanism (9) drives the shelf (6) and the positioning column (7) to rise from their initial positions, and the clamp (4) places the cover plate (17a) on the shelf (6); Step 4: the lifting mechanism (9) drives the shelf (6) and the positioning column (7) to descend to the initial position; Step 5: the clamping jaw (4) moves to the grasping position, grasps the middle plate (17b) and contacts the high-position pin (17e); Step 6: driving the camera (12) and the lens (14) to move to a detection height, taking photos of the microstrip patch (21c) of each channel in the antenna radiation unit (21), detecting appearance defects through image recognition, and moving to the next detection point after the current detection point is completed, and repeating taking photos until all channels are detected; Step 7: The laser displacement sensor (13) moves to the top of the detection point, and under the action of the push rod of the first lifting cylinder (22), moves downward to the detection position for height detection. After the current detection point is completed, the push rod of the first lifting cylinder (22) retracts to the initial position; the laser displacement sensor (13) moves to the next detection point, and the detection process is repeated until all channels are detected, and the maximum height difference of all detection points is calculated to obtain the flatness data; Step 8: The lower probe mechanism (19) moves upward under the action of the push rod of the third lifting cylinder (24), so that the lower probe (19a) contacts the bottom plate (17c); Step 9: The upper probe mechanism (15) moves to above the detection point, and the upper probe mechanism (15) moves downward to the detection position under the action of the push rod of the second lifting cylinder (23), so that the upper probe (15a) contacts the microstrip patch (21c), and the resistance between the upper probe (15a) and the lower probe (19a) is detected; after the detection of the current detection point is completed, the push rod of the second lifting cylinder (23) retracts to the initial position, and the upper probe mechanism (15) moves to the next detection point, and the detection process is repeated until all channels are detected; Step 10: The push rod of the third lifting cylinder (24) is retracted to the initial position.

9. The method for detecting an antenna radiation unit according to claim 8, characterized in that: The setting distance for appearance detection is 50 mm to 70 mm, the setting distance for flatness detection is 30 mm to 40 mm, the lifting stroke of the lifting mechanism (9) is 100 mm to 120 mm, the push rod stroke of the first lifting cylinder (22) is 20 mm to 30 mm, the push rod stroke of the second lifting cylinder (23) is 40 mm to 50 mm, and the push rod stroke of the third lifting cylinder (24) is 10 mm to 15 mm; During detection, the upper probe (15a) and the lower probe (19a) are elastically pressed against the surface to be detected, with a pressing force of 0.5N to 1N.

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