Automatic identification system of flying probe tester

Abstract

The utility model relates to the field of flying probe testers, and discloses an automatic identification system of a flying probe tester, which comprises a multi-axis moving system, a probe module and a scanning module. The probe module is fixedly installed on the multi-axis moving system, the scanning module is located on one side of the probe module, the multi-axis moving system is fixedly installed on the flying probe testing machine, the multi-axis moving system comprises a Z-axis electric sliding table, and the probe module is installed on the Z-axis electric sliding table in a sliding mode. According to the automatic identification system, each detection period is ensured to be based on the latest scheme through a dynamic two-dimensional code technology, real-time detection scheme updating is realized through linkage with a cloud database, faults caused by information errors are reduced, manual operation is reduced, the probability of identification scanning errors is reduced, the overall operation cost is lower, and the system is suitable for popularization and application. And the automatic identification system is fixed on the moving block through the scanning module and the probe module, and the scanning module can identify the circuit board in the detection process of the probe module, so that the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flying probe tester technical field, concretely is a kind of automatic identification system of flying probe tester. BACKGROUND

[0002] At present, manufacturers will attach a dynamic two-dimensional code to each circuit board in order to realize the whole life cycle management of products, which is used to trace the production process. The two-dimensional code not only records the relevant information of the product during the production process, but also updates to contain the latest test results in the subsequent inspection stage. In order to retrieve these data again, the operator needs to use a barcode identification device to read the information by manually operating a code scanning gun.

[0003] In the prior art, an additional independent barcode identification device is needed, and manual operation is required. Long-term repeated identification operation can easily increase the possibility of human error. Meanwhile, data synchronization and code scanning reading need manual intervention, which can easily affect production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an automatic identification system of flying probe tester to solve the problems in the prior art.

[0005] The utility model can achieve the purpose by the following technical solutions.

[0006] An automatic identification system of flying probe tester, the automatic identification system comprises a multi-axis movement system, a probe module, and a scanning module for scanning and identifying circuit board information.

[0007] The probe module is fixedly installed on the multi-axis movement system, the scanning module is located on one side of the probe module, and the multi-axis movement system is fixedly installed on the flying probe tester to control the movement of the probe module and the scanning module.

[0008] The multi-axis movement system comprises a Z-axis electric sliding table, and the Z-axis electric sliding table is slidably installed with the probe module for detecting the circuit board.

[0009] Further, the automatic identification system further comprises a mounting bracket, and the multi-axis movement system is arranged on the mounting bracket. The multi-axis movement system further comprises an X-axis electric sliding table and a Y-axis electric sliding table. The X-axis electric sliding table is fixedly installed on the mounting bracket, and a sliding block is slidably arranged on the X-axis electric sliding table. The Y-axis electric sliding table is fixedly installed on the sliding block, and a moving block is slidably arranged on the Y-axis electric sliding table.

[0010] Further, an outer shell is fixedly arranged on the moving block, a connecting plate is fixedly arranged on the moving block, and a guide block is fixedly arranged on the connecting plate.

[0011] Further, the guide block is provided with a circular hole, and the circular hole is in sliding connection with a lead screw of the Y-axis electric sliding table, and is used for guiding the sliding of the guide block.

[0012] Further, the moving block is fixedly provided with a Z-axis rib plate, and the Z-axis rib plate is fixedly provided with a Z-axis electric sliding table, and the Z-axis electric sliding table is located on one side of the guide block.

[0013] Further, the Z-axis rib plate is fixedly provided with a code reader mounting plate, the code reader mounting plate is fixedly provided with a code reader mounting frame, the Z-axis electric sliding table is located above the code reader mounting frame, the code reader mounting frame is fixedly installed with a scanning module, and the scanning module is fixedly installed at the front of the probe detection machine.

[0014] Further, the automatic identification system further comprises a data acquisition and processing module, a data processing unit and a display and operation interface, the data acquisition module is connected with the probe module, the data processing module is internally provided with a high-speed computing chip, the high-speed computing chip is electrically connected with the scanning module and the detection machine main body, and the display and operation interface is fixedly installed at the front end of the machine body.

[0015] Further, the scanning module comprises a high-definition camera and a scanning processing unit, and is used for reading a dynamic two-dimensional code on the circuit board.

[0016] The automatic identification system has the advantages that:

[0017] 1. The automatic identification system can ensure that each detection cycle is based on the latest scheme, realizes real-time detection scheme updating, reduces faults caused by information errors, and realizes automatic detection and identification of the circuit board.

[0018] 2. The automatic identification system not only stores a current detection scheme, but also synchronously detects a result to the cloud end, forms a complete data chain, and realizes automatic uploading and sharing of detection data, thereby facilitating subsequent analysis and quality inspection, improving operability and data traceability of the equipment, and reducing production cost and maintenance convenience.

[0019] 3. The automatic identification system reduces the degree of manual operation, reduces the probability of identification scanning errors, has lower overall operation cost, and can identify the circuit board through the scanning module during the detection process of the probe module, thereby improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The automatic identification system will be further described below with reference to the drawings.

[0021] Figure 1 is a structural schematic view of the flying probe tester.

[0022] Figure 2Is the structure schematic diagram of flying probe tester of the utility model;

[0023] Figure 3 Is the partial structure schematic diagram of flying probe tester of the utility model;

[0024] Figure 4 Is the structure schematic diagram of moving block of the utility model;

[0025] Figure 5 Is the schematic diagram of automatic identification system of the utility model;

[0026] Figure 6 Is the top view of flying probe tester of the utility model;

[0027] Figure 7 Is the front view of flying probe tester of the utility model;

[0028] Figure 8 Is the structure schematic diagram of flying probe tester of the utility model;

[0029] Figure 9 Is the local structure schematic diagram of flying probe tester of the utility model;

[0030] Figure 10 Is the partial structure schematic diagram of flying probe tester of the utility model;

[0031] Figure 11 Is the probe structure schematic diagram of flying probe tester of the utility model;

[0032] Figure 12 Is the probe structure schematic diagram of flying probe tester of the utility model;

[0033] Figure 13 Is the working schematic diagram of scanning module of the utility model;

[0034] Figure 14 Is the working schematic diagram of scanning module of the utility model;

[0035] The reference signs are as follows:

[0036] 1, mounting frame;10, guide block;11, X-axis electric sliding table;12, Y-axis electric sliding table;13, moving block;14, Z-axis rib plate;15, Z-axis electric sliding table;16, code reader mounting frame;17, probe module;18, scanning module;19, connecting plate;101, code reader mounting plate. DETAILED DESCRIPTION

[0037] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0038] An automatic identification system of a flying probe tester, as shown in Figures 1-5 The automatic identification system comprises a mounting frame 1, an X-axis electric sliding table 11 fixedly arranged on the mounting frame 1, a sliding block slidably arranged on the X-axis electric sliding table 11, a Y-axis electric sliding table 12 fixedly arranged on the sliding block, a moving block 13 slidably arranged on the Y-axis electric sliding table 12, an outer shell fixedly arranged on the moving block 13, a connecting plate 19 fixedly arranged on the moving block 13, a guide block 10 fixedly arranged on the connecting plate 19, a circular hole formed in the guide block 10, and a lead screw of a Z-axis electric sliding table 15 slidably connected with the circular hole, so as to guide the sliding of the guide block 10.

[0039] A Z-axis rib plate 14 is fixedly arranged on the moving block 13, the Z-axis electric sliding table 15 is fixedly arranged on the Z-axis rib plate 14, the Z-axis electric sliding table 15 is located on one side of the guide block 10, a probe module 17 is slidably arranged on one side of the Z-axis electric sliding table 15, a code reader mounting plate 101 is fixedly arranged on the Z-axis rib plate 14, a code reader mounting frame 16 is fixedly arranged on the code reader mounting plate 101, the Z-axis electric sliding table 15 is located above the code reader mounting frame 16, a scanning module 18 is fixedly arranged on the code reader mounting frame 16, the scanning module 18 is fixedly arranged on the front part of the probe tester, the scanning module 18 comprises a high-definition camera and a scanning processing unit, and is used for reading a dynamic two-dimensional code on a circuit board.

[0040] In the embodiment, the scanning module 18 is an MV-IDB007X 1600-pixel small intelligent code reader, can efficiently read various code systems of one-dimensional codes and two-dimensional codes, and the maximum reading speed of the device can reach 31 codes / s.

[0041] As shown in Figure 5 The automatic identification system comprises a multi-axis moving system, the probe module 17, a data acquisition and processing module, a data processing unit, the scanning module 18 and a display and operation interface, the multi-axis moving system is the X-axis electric sliding table 11, the Y-axis electric sliding table 12 and the Z-axis electric sliding table 15, the X-axis, Y-axis and Z-axis direction movement of the probe module 17 is controlled, the probe can be driven to freely move in three-dimensional space, the system realizes high-precision movement through a stepping motor and a precision guide rail, and the positioning accuracy during detection is guaranteed.

[0042] Probe module 17 is a probe module 17 mounted on the moving block 13, the probe and its detection module are connected with the needle holder, which is used to contact the detection point on the circuit board to be tested to collect signals, the probe can accurately contact the tiny solder joints and test points, and the probe is connected with the data acquisition module through a wire to transmit the detected electrical signal to the data processing unit.

[0043] Data acquisition and processing module: the data acquisition module is connected with the probe module 17, which is used to receive the electrical signal transmitted by the probe module 17, and the module contains signal amplification circuit, filter and analog-to-digital converter inside, which converts the collected analog signal into digital signal and transmits it to the data processing unit through data transmission line, which is prior art and will not be described here.

[0044] Data processing unit is used to process the collected digital signal and generate detection results, this unit is equipped with high-performance processor and embedded software, which can analyze the signal in real time and format the processed data for subsequent processing and display, built-in high-speed computing chip, electrically connected with scanning module and detection machine main body, responsible for analyzing two-dimensional code data and controlling detection process, which is prior art and will not be described here.

[0045] The scanning module 18 is located below the Z-axis rib plate 14, and the scanning module 18 is a scanning module 18 for automatically scanning the two-dimensional code on the circuit board, which is composed of high-definition camera and image processing unit, which can identify two-dimensional code and decode production tracking information, and transmit the decoded data to the data processing unit.

[0046] The display and operation interface is fixedly installed at the front end of the machine body, which is used to display the detection data, two-dimensional code information and other related operation information in real time, and the interface realizes user interaction through touch screen, so that the operator can easily view the data and control the running state of the detection machine.

[0047] The flying probe tester uses multi-axis motion system to accurately position the probe to the test point on the circuit board, measures the electrical parameters of components (such as resistance, capacitance) in the circuit by applying a known voltage or current and collecting the response signal. At the same time, the QR scanning module 18 reads the two-dimensional code information on the circuit board, associates the detection results with the production tracking information, and ensures the synchronization of information flow in the production process.

[0048] The flying probe tester main body has automatic control system, detection probe and moving platform, which is used to perform electrical detection of circuit board.

[0049] As Figures 6-12As shown, the CCD camera is installed on the A1BY axis and the B1BY axis of the flying probe tester A1, that is, one set of CCD camera is installed on the A1BY axis of the A surface (front surface) and the B1BY axis of the B surface (back surface), and the QR code is installed and fixed on the A2BY axis, which reciprocates up and down along with the A1BY or the B1BY axis and the A2BY axis, and reciprocates left and right along with the A1X or the B1X axis and the A2X axis, but does not move along with the A1BX or the B1BX axis and the A2BX axis, and the two-dimensional code of the A2BY axis is set as the time function of the x-axis direction movement of the CCD camera of the A1BY axis and the B1BY axis, respectively:

[0050] X A = X(t A )

[0051] X B = X(t B )

[0052] X C = X(t C )

[0053] The time function of the y-axis direction movement of the CCD camera of the A1BY axis and the B1BY axis, and the two-dimensional code of the A2BY axis is set as:

[0054] y2 A = f(T A )

[0055] y2 B = f(T B )

[0056] y2 C = f(T C )

[0057] The corresponding movement is controlled by the servo motor of each axis;

[0058] The device includes a large X-axis moving part, a Y-axis moving part, a small x-axis moving part, and a z-axis moving part, and the position and connection relationship between each part are as follows:

[0059] The detection probe is installed and fixed on the Z-axis moving part, the Z-axis moving part is installed and fixed on the small x-axis moving part, then installed and fixed on the Y-axis moving part, and then the whole is installed and fixed on the large X-axis moving part, as follows:

[0060] 1) X-axis direction moving shaft system: A1X (B2X), A2X (B1X);

[0061] 2) Y-axis direction moving part:

[0062] On A1X(B2X) axis axis system: A1TY(B2TY), A1BY(B2BY);

[0063] On A2X(B1X) axis axis system: A2TY(B1TY), A2BY(B1BY);

[0064] 3) On each Y-axis direction moving parts, and then add along the X-axis direction independent reciprocating movement - the movement distance: 0 ~ 50 mm - small x-axis moving parts:

[0065] On A1X(B2X) axis axis system: A1TX(B2TX), A1BX(B2BX);

[0066] On A2X(B1X) axis axis system: A2TX(B1TX), A2BX(B1BX);

[0067] 4) Z-axis direction moving parts:

[0068] Z-axis components mounted on each small x-axis components, as follows:

[0069] On A1X(B2X) axis axis system: A1TZ(B2TZ), A1BZ(B2BZ);

[0070] On A2X(B1X) axis axis system: A2TZ(B1TZ), A2BZ(B1BZ);

[0071] Correction and function as follows:

[0072] 1, using the installation in the 8 flying probe tester A1BY axis and B1BY axis position of high-resolution CCD camera, through the correction plate of precision level film to correct A1BY axis and B1BY axis;

[0073] 2, then use A1BY axis and B1BY axis position of high-resolution CCD camera, correction axis needle, there are:

[0074] On A1X axis axis system: A1TZ, A1BZ;

[0075] On A2X axis axis system: A2TZ, A2BZ;

[0076] On B1X axis axis system: B1TZ, B1BZ;

[0077] On B2X axis axis system: B2TZ, B2BZ;

[0078] C, using the B1BY axis position of high-resolution CCD camera, correction QR Code reader position;

[0079] D, in the flying probe test process, the high resolution CCD camera of A1B Y axis and B1B Y axis position is used to detect the accurate position of the PCB on the clamp in the flying probe tester through 3-point positioning, so that the probes of each axis are accurately inserted into the corresponding points under the direct control of CADI Gerber data;

[0080] E, the automatic scanning module 18: the utility model discloses a high-efficiency scanning module 18 is integrated in the flying probe tester, so that the equipment can automatically read the two-dimensional code on the circuit board and is associated with the detection result.This function eliminates the dependence on manual code scanning device, realizes the automatic acquisition and transmission of detection data.The module has high-speed processing capacity, can quickly identify and read two-dimensional code data of various formats, and ensures smooth detection process;

[0081] Scanning module: fixedly installed at the front of the flying probe tester, comprising a high-definition camera and a scanning processing unit, for reading the dynamic two-dimensional code on the circuit board.

[0082] The scanning module is an MV-IDB007X 160 million pixel small intelligent code reader, which can efficiently read various one-dimensional codes and two-dimensional codes, and the maximum reading speed of the equipment can reach 31 codes / s, and a self-developed deep learning algorithm is adopted, and the robustness is high.

[0083] As shown in Figure 13 , Figure 14 The two-dimensional code scanning process is as follows: the optical image generated by the lens Lens projects the two-dimensional code pattern onto the surface of the sensor, the detection device (sensor), and after photoelectric conversion, the analog electrical signal is converted into a digital image signal after noise elimination and A / D conversion, and then sent to the digital signal processing chip (DSP) for processing.

[0084] After the lens lens projects the optical signal to the photosensitive area of the sensor, the sensor converts the Bayer format original image to the ISP, and the ISP processes the algorithm to output the image in the RGB space domain to the video acquisition unit at the back end.In this process, the ISP runs the firmware on the ISP logic, thereby controlling the lens and the sensor, and then completing the functions of automatic aperture, automatic exposure and automatic white balance, etc..Among them, the running of the firmware is driven by the interrupt of the video acquisition unit.The two-dimensional code tool completes the online quality adjustment of the ISP through the network port or serial port.

[0085] The image from the sensor end is a Bayer image, which is compensated by black level, lens correction, bad pixel correction, color interpolation, noise removal, white balance correction, color correction, correction, color noise removal and edge enhancement in color space, color and contrast enhancement, and automatic exposure control, and then output YUV (or RGB) format data, and then transmitted to the CPU through the I / O interface for processing.

[0086] The ISP is composed of ISP logic and firmware running thereon. The logic unit can not only complete part of the algorithm processing, but also can count the real-time information of the current image. The firmware obtains the image statistical information of the ISP logic, recalculates, and feeds back the control of the lens, the sensor and the ISP logic, so as to achieve the purpose of automatically adjusting the image quality.

[0087] With the development of CCD (Charge-Coupled Device) and CMOS (Complementary Metal-Oxide Semiconductor) imaging sensors, digital industrial cameras have emerged. Digital industrial cameras have higher image quality, higher frame rate and lower power consumption. The progress of integrated circuit technology makes the camera more compact and portable.

[0088] The working process of the system is as follows:

[0089] S1, preparation stage

[0090] Circuit board placement: the operator places the circuit board to be tested on the workbench of the flying probe tester, and the fixing clamp ensures that the circuit board is stable during the detection process.

[0091] System startup: the operator starts the detection program through the display and operation interface, and the system initializes, including self-checking, multi-axis motion system calibration, etc.

[0092] S2, identification and positioning

[0093] Two-dimensional code identification: the scanning module 18 first scans the QR two-dimensional code on the circuit board, decodes the production tracking information and transmits it to the data processing unit.

[0094] Positioning to the detection point: the multi-axis movement system moves the flying probe head to the first detection point position according to the preset program.

[0095] S3, signal application and acquisition

[0096] Signal application: after the flying probe head contacts the test point, the data acquisition module applies a known voltage or current through the signal generating device.

[0097] Signal acquisition: the flying probe head transmits the collected response signal to the data acquisition module, and the signal is amplified, filtered and converted into a digital signal after analog-digital conversion, and then transmitted to the data processing unit.

[0098] S4, Data Processing and Result Output

[0099] Data Processing: The data processing unit analyzes the collected digital signals and calculates the electrical parameters of the components, such as resistance or capacitance.

[0100] Real-time Display: The test results are displayed in real-time on the operation interface for the operator to view.

[0101] Data Storage: The test results are stored together with the two-dimensional code information in the server or local database, realizing the combination of production tracking and detection data.

[0102] S5, Cycle Detection

[0103] Move to the next point: The multi-axis system moves the flying probe head to the next detection point according to the program instructions.

[0104] Repeat the detection process: The above signal application, signal collection and data processing processes are repeated until all test points are detected.

[0105] Specific use method:

[0106] Load the circuit board: Place the circuit board on the workbench and ensure the correct position.

[0107] Start the system: Start the detection process by touching the operation interface.

[0108] Scan the two-dimensional code: The system automatically scans the two-dimensional code to read the production information.

[0109] Detection: The system automatically moves the flying probe head for point-by-point testing, and the operator can monitor the detection progress in real time.

[0110] View the results: After the detection is completed, the operator can view the detection results on the display screen and export the detection report.

[0111] Data storage: All detection data is automatically stored and associated with production information.

[0112] Advantages: High precision: The multi-axis motion system ensures high precision positioning of the flying probe head in three-dimensional space, suitable for testing high-density circuit boards. Automation: The detection process is fully automated, reducing human intervention and improving detection efficiency and accuracy. Data tracking: Through the integration of two-dimensional code identification and detection data, the whole life cycle of production process is traced and managed.

[0113] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An automatic identification system for a flying probe tester, characterized in that, The automatic identification system includes a multi-axis motion system, a probe module (17), and a scanning module (18) for scanning and identifying circuit board information; The probe module (17) is fixedly mounted on the multi-axis moving system, and the scanning module (18) is located on one side of the probe module (17). The multi-axis moving system is fixedly mounted on the flying probe tester and is used to control the movement of the probe module (17) and the scanning module (18). The multi-axis moving system includes a Z-axis electric slide (15), on which a probe module (17) for testing the circuit board is slidably mounted.

2. The automatic identification system for a flying probe tester according to claim 1, characterized in that, The automatic identification system also includes a mounting frame (1), and a multi-axis moving system is set on the mounting frame (1). The multi-axis moving system also includes an X-axis electric slide (11) and a Y-axis electric slide (12). The X-axis electric slide (11) is fixedly installed on the mounting frame (1), and a slider is slidably provided on the X-axis electric slide (11). The Y-axis electric slide (12) is fixedly installed on the slider, and a moving block (13) is slidably provided on the Y-axis electric slide (12).

3. The automatic identification system for a flying probe tester according to claim 2, characterized in that, The movable block (13) is fixedly provided with a shell, and a connecting plate (19) is fixedly provided on the movable block (13). A guide block (10) is fixedly provided on the connecting plate (19).

4. The automatic identification system for a flying probe tester according to claim 3, characterized in that, The guide block (10) is provided with a round hole, which is slidably connected to the lead screw of the Y-axis electric slide (12) for sliding guidance of the guide block (10).

5. The automatic identification system for a flying probe tester according to claim 3, characterized in that, The movable block (13) is fixedly provided with a Z-axis rib plate (14), and a Z-axis electric slide (15) is fixedly provided on the Z-axis rib plate (14). The Z-axis electric slide (15) is located on one side of the guide block (10).

6. The automatic identification system for a flying probe tester according to claim 5, characterized in that, A reader mounting plate (101) is fixedly installed on the Z-axis rib (14), and a reader mounting bracket (16) is fixedly installed on the reader mounting plate (101). The Z-axis electric slide (15) is located above the reader mounting bracket (16), and a scanning module (18) is fixedly installed on the reader mounting bracket (16). The scanning module (18) is fixedly installed at the front of the probe inspection machine.

7. The automatic identification system for a flying probe tester according to claim 1, characterized in that, The automatic identification system also includes a data acquisition and processing module, a data processing unit, and a display and operation interface. The data acquisition module is connected to the probe module (17). The data processing module has a built-in high-speed computing chip. The high-speed computing chip is electrically connected to the scanning module (18) and the main body of the detection machine. The display and operation interface is fixedly installed at the front end of the machine body.

8. The automatic identification system for a flying probe tester according to claim 1, characterized in that, The scanning module (18) includes a high-definition camera and a scanning processing unit for reading dynamic QR codes on the circuit board.

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