Connector pin detection device and detection method

Abstract

The present invention discloses a connector pin detection device and detection method, which belongs to the technical field of electronic devices. This scheme creates a relatively closed heating space. When two mutually adapted sets of male connectors and female connectors are inserted into the corresponding sockets, the metal pins and the plastic wrapping of the connectors form a temperature difference under the action of the internal temperature, so that the visual recognition device can perform relatively fine thermal imaging, identify the position and number of high-temperature pins based on the thermal accumulation map, and detect the inclination of the pins based on the change of the pin inclination state thermal map from "point" to "strip", and detect the inclination or missing of the pins. At the same time, the visual camera of the visual recognition device can retrieve the relevant data of the corresponding model of the pin, and compare the appearance to check whether the appearance is missing. The overall quality of the detection has a high guarantee effect, and the detection accuracy is high, easy to use, and efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic devices, and in particular relates to connector pin detection equipment and a detection method. Background Art

[0002] As the main docking method for current communication connections, connectors can be used to maintain docking and disassembly for electronic connections to achieve an assembled connection structure.

[0003] For connector production, defective products are quite common. With the needs of production, the corresponding inspection system is also established. The traditional method of manual inspection often leads to omissions. For example, if a pin is missing or tilted, it is difficult to see directly and requires careful observation. However, in batch production, it is undoubtedly time-consuming and labor-intensive to rely on careful inspection to detect pins. If defective products fail the quality inspection, there will be a more negative impact.

[0004] The quality inspection of connectors mainly involves the inspection of the pins’ qualification. If the pins are missing or tilted, they need to be reprocessed. However, how to conduct efficient inspection to replace manual inspection is still a big challenge.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A connector pin detection device, comprising:

[0008] case.

[0009] Visual recognition equipment.

[0010] The visual recognition device is protectively installed in the shell, and the visual recognition device includes multiple cameras.

[0011] Insulated box.

[0012] The heat preservation box is fixed on one side of the shell, and two matching connectors for detection are provided through the side of the heat preservation box away from the shell.

[0013] Airway.

[0014] The air channel is fixed on the surface of the heat preservation box and is communicated with the heat preservation box, and is used for guiding the flow of the circulating airflow.

[0015] Electric heating network.

[0016] The electric heating network is installed on the inner wall of the airway and is used to control the temperature in the insulation box in coordination with the circulating airflow.

[0017] As a further solution of the present invention: an anti-shake bracket is fixedly connected to the inner wall of the shell, and the visual recognition device is installed on the air cushion surface above the anti-shake bracket.

[0018] As a further solution of the present invention: an air outlet and an air inlet are provided on the lower surface of the heat-insulating shell, and the air outlet and the air inlet are connected to the airway.

[0019] As a further solution of the present invention: the multiple cameras include visual cameras and infrared cameras, and the infrared cameras are thermal imaging probes.

[0020] As a further solution of the present invention: a fan for providing power for circulating airflow is installed on one side of the electric heating network, and a sealing frame for partitioning and fixing the electric heating network is provided on the surface of the electric heating network.

[0021] As a further solution of the present invention: a lens for gas isolation is provided between the shell and the heat preservation box, and a background plate is provided on the inner wall of the heat preservation box.

[0022] As a further solution of the present invention: the surfaces of the insulation box and the background plate are jointly provided with two sockets, and two matching connectors are respectively located in the corresponding sockets, and the two matching connectors include a male connector and a female connector.

[0023] As a further solution of the present invention: a connector pin detection method includes the following method:

[0024] Insert the two matching connectors into the corresponding two sockets respectively.

[0025] Start the fan and the electric heating network to keep the airflow inside the insulation box heated in circulation. After a period of time, the male connector and the female connector are evenly heated.

[0026] The visual camera and the infrared camera of the visual recognition device are started to observe the male connector and the female connector, and a thermal image is generated based on the infrared camera.

[0027] Analyze the thermal image and adjust the thermal image exposure based on the visual camera image.

[0028] Identify hot spots and / or bars on male and female connectors.

[0029] Count the number and shape of high-heat areas on the male and female connectors to see if they are consistent.

[0030] The connector model is indexed in the database based on the pin shape and arrangement data, and the appearance and shape integrity of the interface is checked using visual recognition equipment.

[0031] As a further solution of the present invention: the matching connector enters the socket to keep the mating surfaces of the male connector and the female connector inserted.

[0032] As a further solution of the present invention: the exposure of the thermal imaging image is adjusted to a similarity between the image and the outline of the visual camera to 60-90%.

[0033] Beneficial effects:

[0034] This solution creates a relatively closed heating space. When two sets of mutually compatible male connectors and female connectors are inserted into the corresponding sockets, the internal temperature causes a temperature difference between the metal pins and the plastic wrapping of the connectors. At the same time, at the uniform temperature of the background board, the visual recognition equipment can perform relatively precise thermal imaging. Subsequently, the position and number of high-temperature pins are identified based on the thermal accumulation map, and the inclination of the pins can be detected based on the change of the pin inclination state thermal map from "dot" to "strip", thereby detecting the inclination or missing of the pins. At the same time, the visual camera of the visual recognition device can retrieve the relevant data of the corresponding model of the pin, and compare the appearance to check whether the appearance is missing. The overall quality of the inspection is highly guaranteed, and the inspection is accurate, easy to use, and efficient.

[0035] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In the attached picture:

[0037] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0038] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0039] Figure 3 It is a schematic diagram of the exploded cross-sectional structure of the present invention;

[0040] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the housing of the present invention;

[0041] Figure 5 It is a structural schematic diagram of the heat preservation box and the airway section of the present invention.

[0042] In the figure: 1. Shell; 2. Insulation box; 3. Visual recognition device; 4. Lens; 5. Background board; 6. Air duct; 7. Electric heating network; 8. Fan; 9. Sealing frame; 10. Female connector; 11. Male connector; 12. Air outlet; 13. Air inlet; 14. Anti-shake bracket; 15. Visual camera; 16. Infrared camera; 17. Socket. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0044] like Figures 1 to 5 As shown, a connector pin detection device includes:

[0045] Shell 1.

[0046] Visual recognition equipment3.

[0047] The visual recognition device 3 is protectively installed in the housing 1 and includes a variety of cameras.

[0048] Insulation box 2.

[0049] The heat preservation box 2 is fixed on one side of the shell 1 , and two matching connectors for detection are provided through the side of the heat preservation box 2 away from the shell 1 .

[0050] Airway 6.

[0051] The air duct 6 is fixed on the surface of the heat preservation box 2 and is communicated with the heat preservation box 2 for guiding the flow of the circulating airflow.

[0052] Electric heating network7.

[0053] The electric heating network 7 is installed on the inner wall of the air duct 6 to control the temperature in the heat preservation box 2 in coordination with the circulating airflow.

[0054] A relatively semi-enclosed heating space is created inside the insulation box 2, and there will be two sockets 17 where heat loss will occur. When two mutually compatible male connectors 11 and female connectors 10 are inserted into the corresponding sockets 17, under the action of the internal temperature, a temperature difference is formed between the metal pins and the plastic wrapping of the connectors, and at the same time, it can be displayed more clearly under the uniform temperature background of the background plate 5, so that the visual recognition device 3 can perform more detailed thermal imaging. Subsequently, the position and number of high-temperature pins are identified based on the thermal accumulation map, and the inclination of the pin can be detected based on the change of the pin inclination state thermal map from "dot" to "strip", thereby detecting the inclination or missing of the pin. At the same time, the visual camera 15 of the visual recognition device 3 can retrieve the relevant data of the corresponding model of the pin, and compare the appearance to check whether the appearance is missing.

[0055] Specifically, Figure 2 As shown, an anti-shake bracket 14 is fixedly connected to the inner wall of the shell 1 , and the visual recognition device 3 is installed on the air cushion surface above the anti-shake bracket 14 .

[0056] By setting up the anti-shake bracket 14, the vibration of the workbench on the visual recognition device 3 can be reduced, and the impact thereon can be reduced. At the same time, when bonding or adsorbing one side of the shell 1, the impact of nearby equipment can be reduced, and stable support for the visual recognition device 3 can be maintained. At the same time, the air cushion design has a good effect of filtering vibration and buffering.

[0057] Specifically, Figure 2 and Figure 3 As shown, an air outlet 12 and an air inlet 13 are provided on the lower surface of the heat-insulating shell, and the air outlet 12 and the air inlet 13 are communicated with the air passage 6 .

[0058] By setting the air inlet 13, the air flow can be drawn into the air duct 6. At the same time, when the air flow enters the insulation shell through the air outlet 12, the hot air flow can directly impact the male connector 11 and the female connector 10 under the action of inertia.

[0059] Specifically, Figure 4 As shown, the multiple cameras include a visual camera 15 and an infrared camera 16, and the infrared camera 16 is a thermal imaging probe.

[0060] By setting up the infrared camera 16, the infrared camera 16 adopts a special probe for thermal imaging, and the specialized probe can provide higher recognition accuracy.

[0061] Specifically, Figure 5 As shown, a fan 8 for providing power for circulating airflow is installed on one side of the electric heating network 7, and a sealing frame 9 for partitioning and fixing the electric heating network 7 is provided on the surface of the electric heating network 7.

[0062] By setting up a fan 8, which is installed on one side of the electric heating network 7, the airflow can be kept in a stable circulation during operation. At the same time, in conjunction with the sealing frame 9, the left and right sides can be isolated from each other, ensuring that the airflow needs to pass through the electric heating network 7 to be heated.

[0063] Specifically, Figure 3 As shown, a lens 4 for gas isolation is provided between the shell 1 and the heat preservation box 2, and a background plate 5 is provided on the inner wall of the heat preservation box 2.

[0064] By providing the lens 4 , the lens 4 can block the airflow and prevent the hot airflow from entering the housing 1 .

[0065] Specifically, Figure 1 As shown, two sockets 17 are provided on the surfaces of the insulation box 2 and the background plate 5 , and two matching connectors are respectively located in the corresponding sockets 17 , and the two matching connectors include a male connector 11 and a female connector 10 .

[0066] As a further solution of the present invention: a connector pin detection method includes the following method:

[0067] Insert two matching connectors into the corresponding two sockets 17 respectively.

[0068] The fan 8 and the electric heating network 7 are started to keep the airflow inside the heat preservation box 2 heated in a circulating flow, and after a period of time, the male connector 11 and the female connector 10 are evenly heated.

[0069] The visual camera 15 and the infrared camera 16 of the visual recognition device 3 are started to observe the male connector 11 and the female connector 10 , and a thermal imaging image is generated according to the infrared camera 16 .

[0070] The thermal image is analyzed and the exposure of the thermal image is adjusted according to the image of the visual camera 15 .

[0071] The point-shaped and / or strip-shaped high-temperature shapes of the male connector 11 and the female connector 10 are identified.

[0072] Count whether the number and shape of the high-heat areas of the male connector 11 and the female connector 10 are consistent.

[0073] The connector model is indexed in the database based on the pin shape and arrangement data, and the visual recognition device 3 is used to identify and check the integrity of the interface appearance shape.

[0074] As a further solution of the present invention, a matching connector enters the socket 17 to keep the mating surfaces of the male connector 11 and the female connector 10 inserted.

[0075] As a further solution of the present invention: the exposure of the thermal image is adjusted until the image and the outline of the visual camera 15 are similar to 60-90%.

[0076] Working principle:

[0077] When the present solution is used, by starting the fan 8, when the fan 8 is in operation, the airflow on the right side of the electric heating network 7 is blown toward the left side, thereby maintaining the airflow to flow in a directional manner in the airway 6. As the temperature inside the heat preservation box 2 increases, the female connector 10 and the male connector 11 can be placed in the two sockets 17. As the temperature inside the heat preservation box 2 increases, the temperature begins to increase. Based on the fast heating speed of copper metal, the pin position and state of the high-heat area can be quickly identified by the visual recognition device 3.

[0078] The visual recognition device 3 uses the infrared camera 16 on the surface to record the thermal image of the male connector 11 and the female connector 10 in real time, and the visual camera 15 records the appearance of the product, adjusts the exposure of the thermal image, so that the image will not be "blurred", and keeps the product outline recognizable through thermal imaging. The outline is compared with the product appearance of the visual recognition device 3 and the visual camera 15. When the outline similarity reaches 80%, the "dot-shaped" or "strip-shaped" high-temperature area is read and identified as a pin, and the position layout and quantity information are counted, and the pin data is searched. Search for the product model and retrieve the data of the product of that model. If there is no product model, extract the product model with the most similar pins. At the same time, use the visual camera 15 to compare the product's appearance with the product or with the most similar product model to determine whether the appearance is complete. If the product model is successfully identified, if the appearance does not match, the appearance may be damaged and requires manual verification. If the product model is not identified and compared with the most similar product model, there will be the following two results: one is that the appearance matches the most similar product model, then it is determined that the pins are damaged; the other is that the appearance does not match the most similar product model, then manual verification is performed.

[0079] When a group of two matching connectors have been tested, they are taken out from the socket 17 and directly inserted into another group of male connector 11 and female connector 10 for matching. During the test here, the pins of the male connector 11 and the female connector 10 are also matched with the socket 17. If an error occurs, an appearance check is performed to determine whether the model matches, and then determine whether the pins are complete or bent.

[0080] During the detection process, it is important to know that the pins viewed from the front are dot-shaped. If the pins are tilted, an angle will appear in the viewing angle, making the thermal image appear as a strip. When detecting the pins of the same model, based on the angle of the infrared camera 16, the length of the thermal imaging strips of different pins and the length of the preset data can be used to determine whether the pins are tilted. The tilt error determined here is ±2mm of the strip thermal area.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A connector pin detection device, characterized in that: include: Housing (1); Visual recognition equipment (3); The visual recognition device (3) is protectively installed in the housing (1), and the visual recognition device (3) includes a plurality of cameras; Insulated box (2); The heat preservation box (2) is fixed to one side of the shell (1), and two matching connectors for detection are provided through the side of the heat preservation box (2) away from the shell (1); Airway (6); The air duct (6) is fixed on the surface of the heat preservation box (2) and is in communication with the heat preservation box (2) and is used to guide the flow of the circulating airflow; Electric heating network (7); The electric heating network (7) is installed on the inner wall of the air duct (6) and is used to cooperate with the circulating airflow to control the temperature inside the heat preservation box (2); The multiple cameras include a visual camera (15) and an infrared camera (16), and the infrared camera (16) is a thermal imaging probe; A lens (4) for gas isolation is provided between the shell (1) and the heat preservation box (2), and a background plate (5) is provided on the inner wall of the heat preservation box (2); The surfaces of the heat preservation box (2) and the background plate (5) are jointly provided with two sockets (17), and two matching connectors are respectively located in the corresponding sockets (17), and the two matching connectors include a male connector (11) and a female connector (10).

2. A connector pin detection device according to claim 1, characterized in that: An anti-shake bracket (14) is fixedly connected to the inner wall of the housing (1), and the visual recognition device (3) is mounted on the air cushion surface above the anti-shake bracket (14).

3. A connector pin detection device according to claim 1, characterized in that: An air outlet (12) and an air inlet (13) are provided on the lower surface of the heat preservation box, and the air outlet (12) and the air inlet (13) are both connected to the airway (6).

4. A connector pin detection device according to claim 3, characterized in that: A fan (8) for providing power for circulating airflow is installed on one side of the electric heating net (7), and a sealing frame (9) for partitioning and fixing the electric heating net (7) is provided on the surface of the electric heating net (7).

5. A connector pin detection method, according to the connector pin detection device of claim 4, characterized in that: The following methods are included: Insert two matching connectors into the corresponding two sockets (17) respectively; The fan (8) and the electric heating network (7) are started to keep the airflow inside the heat preservation box (2) heated in a circulating flow, and after a certain period of time, the male connector (11) and the female connector (10) are evenly heated; Starting the visual camera (15) and the infrared camera (16) of the visual recognition device (3) to observe the male connector (11) and the female connector (10), and generating a thermal image based on the infrared camera (16); Analyzing the thermal image and adjusting the exposure of the thermal image according to the image of the visual camera (15); Identifying the point-shaped and / or strip-shaped high-temperature shapes of the male connector (11) and the female connector (10); Counting whether the number and shape of the high-heat areas of the male connector (11) and the female connector (10) are consistent; The connector model is indexed in the database based on the pin shape and arrangement data, and the visual recognition device (3) is used to identify and check the completeness of the interface appearance shape.

6. A connector pin detection method according to claim 5, characterized in that: The matching connector enters the socket (17) to keep the mating surfaces of the male connector (11) and the female connector (10) inserted.

7. A connector pin detection method according to claim 5, characterized in that: The exposure of the thermal image is adjusted until the image has a profile similarity of 60-90% to that of the visual camera (15).

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