Bluetooth PCBA board testing machine and testing method

Abstract

The invention discloses a Bluetooth PCBA board testing machine and a testing method, and belongs to the field of testing machines, and the Bluetooth PCBA board testing machine and the testing method integrate an automatic board loading module, a board unloading module, a manipulator grabbing module, an automatic testing platform module, an environment simulation module, a wireless signal shielding and interference suppression module, a data storage and analysis module and the like. And the full-automatic and multifunctional testing process of the Bluetooth PCBA board is realized. Core functions of the system include intelligent inspection of appearance quality by the visual inspection module, diversified working condition test provided by the environment simulation module, guarantee of test accuracy by the signal shielding system, and improvement of efficiency by multi-station parallel test. The data storage system collects and analyzes a test result in real time, binds the test result with a unique identifier, and supports quality tracing and improvement. A built-in fault diagnosis and alarm system of the equipment guarantees stable operation, and an automatic cleaning and maintenance module prolongs the service life of the equipment. The design significantly improves the test precision and efficiency, and is suitable for large-scale production requirements.

Description

Technical Field

[0001] The present invention relates to the field of testing machines, and more specifically, to a Bluetooth PCBA board testing machine and a testing method. Background Art

[0002] The Bluetooth PCBA board tester and its test method are mainly used to comprehensively test the function, performance and quality of the Bluetooth circuit board (PCBA) to ensure that it meets the design and production standards. The tester combines hardware and software to automatically test key indicators such as Bluetooth connection performance, RF signal strength, data transmission rate, current consumption, etc. In addition, it can also implement Bluetooth PCBA testing of different models and specifications through programmatic settings, improve test efficiency, reduce manual intervention, and significantly reduce the error rate and cost of the production line. The biggest advantage of this tester is its automation and accuracy, especially in large-scale production. Through fast and repetitive testing, it can save a lot of time for enterprises, improve product consistency, and ensure the competitiveness of the final product in the market.

[0003] However, its biggest drawback is the high initial investment cost. Developing and purchasing a Bluetooth PCBA board tester and its supporting software system requires a large amount of capital, and professional engineers are also required to debug and maintain the equipment. For small-batch production or start-ups, such high equipment investment may be unaffordable. In addition, since the equipment relies on specific hardware and software, additional investment may be required to upgrade as technology is updated, otherwise there is a risk of obsolescence. Therefore, companies need to weigh the cost and long-term benefits when introducing such equipment. Summary of the invention

[0004] Technical issues to be solved: High initial investment costs. Developing and purchasing a Bluetooth PCBA board tester and its supporting software system requires a large amount of capital, and professional engineers are also required to debug and maintain the equipment. For small-batch production or start-ups, such high equipment investment may be unaffordable. In addition, since the equipment relies on specific hardware and software, additional investment may be required to upgrade as technology is updated, otherwise there is a risk of obsolescence. Therefore, companies need to weigh the cost and long-term benefits when introducing such equipment.

[0005] Technical solution: The core structure of the Bluetooth PCBA board tester includes an automatic board loading structure, an automatic board unloading structure, a robot gripping structure and an automated test-type carrying platform; the auxiliary function modules include a visual inspection module, an environmental simulation module, a wireless signal shielding and interference suppression system, a data storage and analysis system, a variety of communication interface support, a fault diagnosis and alarm system and an automatic cleaning and maintenance module;

[0006] The automatic board loading structure delivers the PCBA board to the test platform through the conveying system, and the visual inspection module performs appearance quality inspection on the PCBA board while loading the board, including component position, polarity and welding quality; the inspection results are fed back to the automatic board loading structure in real time, and if unqualified products are found, the automatic board unloading structure separates the unqualified products;

[0007] After the test is completed, the automatic unloading structure classifies the PCBA boards according to their quality, and stores qualified products and unqualified products separately; the data storage and analysis system records and associates the unique identification of each PCBA board in real time, including the QR code and barcode and the test results;

[0008] The robot gripping structure transfers the PCBA board from the upper plate structure to the automated test-type carrying platform through a mechanical arm, and after the test is completed, the mechanical arm moves the PCBA board to the lower plate structure;

[0009] The automated test-type carrier platform provides a standardized physical test environment for Bluetooth performance testing, and the environmental simulation module adjusts external environmental conditions, including temperature and humidity; the wireless signal shielding and interference suppression system cooperates with the automated test-type carrier platform to prevent the Bluetooth signal test process from being interfered by external wireless signals;

[0010] The fault diagnosis and alarm system monitors the working status of each module in real time, automatically stops operation and issues an alarm when a fault is detected, thereby preventing unqualified products from entering the production chain; the automatic cleaning and maintenance module regularly maintains the robot arm and other key components;

[0011] The data storage and analysis system supports multiple communication interfaces, including USB, UART, and SPI, to connect to the test platform to achieve real-time data upload and processing; remote control and multi-language support functions are achieved through an integrated software control platform, allowing operators to remotely monitor, adjust test parameters, and resolve equipment failures.

[0012] Preferably, the automatic loading structure includes a base plate; a loading box and a conveying mechanism are provided on the top of the base plate, a driving assembly is provided at the bottom of the plate, the top of the base plate is rotatably connected with a threaded assembly, a linkage assembly and a transmission assembly, the driving assembly is meshed with the threaded assembly, a transmission belt is wound between the driving assembly and the linkage assembly, the linkage assembly and the transmission assembly are meshed with each other, the top of the threaded assembly is threadedly connected with an internal threaded cylinder, the top of the internal threaded cylinder is fixedly connected with a loading plate, the top of the loading box is fixedly connected with a mounting frame, the side wall of the mounting frame is rotatably connected with a pushing assembly, and the pushing assembly is meshed with the transmission assembly, the pushing plate is threadedly connected to the pushing assembly, the inner side of the mounting frame is symmetrically fixedly connected with a limiting rod, and the push plate is slidably set on the limiting rod.

[0013] Preferably, the automatic lower plate structure bottom plate, the top of the bottom plate is provided with a conveying mechanism, a placement table, a containing frame and two groups of mounting frames, a linear transmission mechanism is fixedly installed between the two groups of mounting frames, the displacement end of the linear transmission mechanism is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a lifting component, a driving component is provided on the bottom side wall of the lifting component, a threaded block is symmetrically threaded on the output end of the driving component, a limiting rod is fixedly connected between the side walls at both ends of the bottom inner side of the lifting component, and the threaded block is slidably arranged on the limiting rod, a connecting rod is fixedly connected to the bottom of the threaded block, a clamping block is slidably arranged on the inner side of the connecting rod, a telescopic component is symmetrically arranged on the inner side of the connecting rod and the clamping block, an abutment component is provided on the side wall of the clamping block, and a pressure sensor is provided on the inner side of the connecting rod.

[0014] Preferably, the robot gripping structure includes a robot arm and an electric clamp, the end of the robot arm is fixedly connected to a mounting shell, a threaded component is rotatably connected to the side wall of the mounting shell, a vertical plate is symmetrically threadedly connected to the threaded component, and a fixing rod is symmetrically fixedly connected to the side where two groups of vertical plates are close to each other, a limiting rod is symmetrically fixedly connected between the side walls at both ends of the inner cavity of the mounting shell, a limiting block is symmetrically fixedly connected at both ends of the vertical plate, and the limit block is slidably arranged on the limiting rod, a mounting plate is fixedly connected to the side wall of the mounting shell, a constraint component which is mutually engaged with the threaded component is slidably arranged on the mounting plate, four groups of positioning frames are fixedly connected to an array on one side of the mounting shell away from the end of the robot arm, a mounting block is fixedly connected to the top of the electric clamp, and fixing grooves are symmetrically provided on the side walls at both ends of the mounting plate.

[0015] Preferably, the automated test-type bearing platform comprises a base plate and four groups of clamps; the top of the base plate is symmetrically fixedly connected with slide rails, a slide table is slidably arranged between the tops of the two groups of slide rails, an electric telescopic rod 1 is fixedly installed on one side of the top of the base plate, and the telescopic end of the electric telescopic rod 1 is fixedly connected to the side wall of the slide table, the top of the slide table is fixedly connected with a test bench, four groups of electric telescopic rods 2 are fixedly installed at equal angles on the top of the test bench, the telescopic ends of the electric telescopic rods 2 are fixedly connected with vertical plates, a slot is provided on one side of the vertical plate close to the center of the test bench, and the top of the vertical plate is fixedly connected with a mounting plate. The mounting frame has a fixing component slidingly arranged on the top of the mounting frame, and the fixing component extends downward to the inside of the slot, a sliding groove is provided on the side wall of the fixing component, a limiting groove is provided in the sliding groove, a mounting plate is fixedly connected to one side of the top of the mounting frame, a limiting component inserted in the limiting groove is slidably arranged on the side wall of the mounting plate, a connecting plate is fixedly connected to one side of the top of the base plate, a cross plate is fixedly connected to the side wall of the connecting plate, a visual detection component is provided on the cross plate, a fixing groove is provided on one side of the top of the fixture, and a placement plate is fixedly connected to the side of the fixture close to the center of the test bench.

[0016] Preferably, the Bluetooth PCBA board testing machine testing method comprises the following steps:

[0017] S1. The automatic board loading structure sends the PCBA board into the test process; the visual inspection module checks the component position, polarity and welding quality. The qualified boards enter the next stage, and the unqualified boards are separated by the automatic board unloading structure;

[0018] S2. The robot grasps the structure and transfers the plate to the automated test-type carrying platform; the automated test-type carrying platform calibrates the plate position so that the probe and the test point are accurately docked;

[0019] S3. The environmental simulation module adjusts the temperature and humidity conditions to simulate the working environment; the wireless signal shielding system is activated to avoid external interference; the test platform performs functional testing, RF performance testing and stability testing in turn;

[0020] S4. The data storage and analysis system records the test results and binds them to the unique identification information of the PCBA board;

[0021] The qualified board is moved to the qualified bracket by the robot, and the unqualified board is moved to the unqualified area;

[0022] S5. The fault diagnosis system monitors the equipment status in real time, alarms and interrupts the operation when abnormal; the automatic cleaning module regularly cleans key components to ensure test accuracy;

[0023] S6. Multi-station parallel testing function processes multiple plates at the same time; remote control and multi-language support functions facilitate operation and real-time management.

[0024] Preferably, the visual detection module comprises the following steps:

[0025] S1-1. When the PCBA board enters the visual inspection area, the camera system of the visual inspection module is started to shoot the PCBA board to generate a high-resolution image;

[0026] S1-2. Analyze the captured images through the built-in image processing algorithm to identify whether each component is correctly installed in the designed position; confirm whether the polarity of capacitors and resistors is consistent with the design; detect whether there are cold solder joints, continuous solder joints, leaking solder joints and open circuits; identify whether there are scratches, contamination and other physical defects on the surface of the board;

[0027] S1-3. The test results are compared with the preset standards. If the qualified image analysis shows that the plate meets the standards, a signal is sent to the control system to allow it to enter the next link. When non-compliant components and defects are found, they are immediately marked and a signal is sent to the automatic unloading structure to instruct the non-compliant components to be removed from the production process.

[0028] Preferably, the environmental simulation module comprises the following steps:

[0029] S3-1-1. The system receives environmental parameters including temperature, humidity and air pressure input by the user according to preset requirements and test schemes; the environmental parameters are input through the touch interface and remote control software; standardized environmental modes are selected according to different test requirements, including high temperature and high humidity, low temperature and dryness;

[0030] S3-1-2. The environmental simulation module starts the heating and cooling units to adjust the temperature of the test area to the set value; adjusts the air humidity in the test area to the target range through humidification and dehumidification equipment; if special scene simulation is involved, adjusts the air pressure conditions through vacuum and pressure equipment;

[0031] S3-1-3. The built-in sensor system monitors the temperature, humidity and other parameters of the test environment in real time, so that the environmental conditions reach and are maintained within the set range; if parameter fluctuations are detected, the control system is automatically adjusted to quickly stabilize the environment;

[0032] S3-1-4. After the environmental conditions are stable, the PCBA board starts performance testing, including Bluetooth function, RF performance and stability testing. During the test, the environmental simulation module gradually changes the conditions according to the test requirements, including gradually increasing and decreasing the temperature, to verify the performance of the PCBA board in different environments.

[0033] S3-1-5. The sensor data and test results are uploaded to the data storage and analysis system synchronously, so that each test result corresponds to the corresponding environmental conditions; the system generates a record file containing environmental parameters and test data;

[0034] S3-1-6. If an abnormality occurs during the environmental simulation, including temperature exceeding the safe range and humidity adjustment failure, the fault diagnosis system will immediately alarm and suspend the test operation to prevent damage to the PCBA board and test equipment; the system will record the abnormality and notify the operator to troubleshoot the problem;

[0035] S3-1-7. After the test is completed, the environmental simulation module automatically returns to its initial state and cleans up residual water vapor, condensation and other impurities in the test area; the operator maintains the equipment on a periodic basis to ensure long-term and stable operation of the environmental simulation module.

[0036] Preferably, the wireless signal shielding and interference suppression system comprises the following steps:

[0037] S3-2-1. The system starts the wireless signal shielding cabin and shielding cover to completely isolate the test area from external wireless signals; the interior of the shielding cabin is composed of conductive metal and shielding materials to block external radio frequency signals including Wi-Fi, 4G / 5G, and other Bluetooth devices from entering the test space;

[0038] S3-2-2. Use built-in filter modules and electromagnetic shielding materials to reduce the impact of electromagnetic interference generated by the electronic components inside the tester on Bluetooth performance testing; use shielded cables and differential signal transmission technology to isolate noise interference from the control circuit;

[0039] S3-2-3. The system has a built-in frequency selection module, which only allows signals in the target frequency range including the Bluetooth 2.4GHz band to enter the test process; in a shielded environment, a stable Bluetooth communication signal is generated through a reference transmitter to calibrate and test the RF performance of the PCBA board;

[0040] S3-2-4. The system has a built-in RF monitoring module that scans the wireless spectrum in the shielding cabin in real time to detect whether there are unexpected signals and internal reflection interference; if interference is detected, the system automatically adjusts the signal reflection suppression parameters in the shielding cabin, including the working state of the absorbing material, to make the signal pure;

[0041] S3-2-5. Test the Bluetooth module's transmission power, receiving sensitivity, and signal quality in a shielded environment to evaluate anti-interference and RF performance. In multi-station testing, the shielding system ensures that there is no signal crosstalk between test channels.

[0042] S3-2-6. Record the Bluetooth signal strength, transmission rate, and bit error rate indicators through a radio frequency analyzer, and compare and analyze them with the standard values; upload the test results to the data storage and analysis system and bind them to the unique identification information of the board;

[0043] S3-2-7. Regularly check the physical integrity of the shielding chamber to ensure that the shielding effect is not impaired;

[0044] If external signal interference and shielding failure are detected, the system will immediately issue an alarm and suspend the test to avoid erroneous results.

[0045] Compared with the prior art, the advantages of the present invention are:

[0046] (1) The introduction of automatic loading and unloading of boards and robot grasping structures reduces manual intervention and improves the automation level of the test process. In particular, the seamless collaboration between visual inspection and the test platform significantly optimizes efficiency. Existing technologies usually rely on manual operation or a single functional module, which is inefficient and prone to errors.

[0047] (2) Through the visual inspection module and fault diagnosis system, a closed-loop control from appearance quality inspection to fault feedback is achieved, effectively preventing unqualified boards from entering the subsequent testing stage; the existing equipment usually lags behind in identifying and separating unqualified products, which may lead to waste of resources.

[0048] (3) Equipped with an environmental simulation module with adjustable temperature and humidity, it can simulate a variety of complex working conditions to ensure the performance stability of the PCBA board in real usage scenarios; traditional technology makes it difficult to verify the environmental adaptability of Bluetooth devices during the testing phase.

[0049] (4) The built-in high-efficiency shielding system and interference suppression module provide a pure test environment to ensure the accuracy of Bluetooth communication performance and RF testing; existing technologies often cause large errors in test results due to interference from external signals.

[0050] (5) The data storage and analysis system associates the test results with the unique identification information of the PCBA board, which is convenient for tracking and improvement; it supports multi-protocol data transmission and remote operation management, enhancing traceability and applicability; traditional testing methods lack effective data management and real-time analysis functions.

[0051] (6) Through multi-station parallel design, the test efficiency is improved, the production cycle is significantly shortened, and it is suitable for large-scale production needs; most existing equipment is single-station testing, which is inefficient and difficult to meet high production capacity needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of a flow chart of a testing method of a Bluetooth PCBA board testing machine of the present invention;

[0053] Figure 2 A mechanical diagram of a Bluetooth PCBA board testing machine of the present invention;

[0054] Figure 3 A mechanical diagram of a Bluetooth PCBA board testing machine of the present invention;

[0055] Figure 4 A mechanical diagram of a Bluetooth PCBA board testing machine of the present invention;

[0056] Figure 5 A mechanical diagram of a Bluetooth PCBA board testing machine of the present invention; DETAILED DESCRIPTION

[0057] Example: See Figure 1-Figure 2 - Figure 3-Figure 4 - Figure 5 The core structure of a Bluetooth PCBA board tester includes an automatic board loading structure, an automatic board unloading structure, a robot gripping structure and an automated test-type carrying platform; the auxiliary function modules include a visual inspection module, an environmental simulation module, a wireless signal shielding and interference suppression system, a data storage and analysis system, a variety of communication interface support, a fault diagnosis and alarm system and an automatic cleaning and maintenance module;

[0058] Specifically, the data storage and analysis system includes the following steps:

[0059] During the test process, the test data of each PCBA board is collected in real time, including functional test results, RF performance, appearance inspection results, etc.

[0060] Bind the data to the PCBA board’s unique identification code (such as a QR code or barcode).

[0061] The test platform uploads data to the storage system through the communication interface (USB, UART, SPI, etc.) to ensure real-time transmission and synchronization.

[0062] Test data is stored in a central database and managed by time, batch and identification code to ensure traceability.

[0063] The built-in algorithm counts and analyzes the test results, generates reports such as pass rate and common failure modes, and provides a basis for production optimization.

[0064] For non-conforming products, analyze the sources of defects and put forward improvement suggestions.

[0065] Through the user interface or remote control platform, operators can view or export historical data in real time for subsequent analysis and quality management.

[0066] Specifically, the specific implementation steps of multiple communication interface support are as follows:

[0067] When the system starts up, it selects the corresponding communication protocol (such as USB, UART, SPI, etc.) according to the test requirements.

[0068] Automatically configure interface parameters (baud rate, clock frequency, etc.) to ensure compatibility with communication requirements of different PCBA boards.

[0069] The system establishes a communication connection with the PCBA board and tests its communication functions (such as data sending and receiving capabilities, error rate, etc.).

[0070] Record communication performance indicators and compare and analyze them with standard values.

[0071] The test results are uploaded to the data storage and analysis system through the communication interface, and parallel data transmission of multiple devices is supported.

[0072] If data loss or protocol errors occur during the communication process, the system will automatically retry or switch to the backup interface to ensure the smooth completion of the test process.

[0073] Specifically, the specific implementation steps of the fault diagnosis and alarm system are as follows:

[0074] Real-time monitoring of the operating status of each module (such as robot grasping accuracy, test probe contact status, shielding system integrity, etc.).

[0075] When an anomaly is detected, the source of the fault is analyzed through built-in sensors and algorithms.

[0076] The system automatically stops operation in the event of a fault, avoiding further damage to the equipment or invalid test results.

[0077] Sound, light or interface notifications are issued to alert the operator to the location and type of fault.

[0078] The fault information is recorded in the database, including time, module status, environmental parameters, etc., to provide a basis for subsequent troubleshooting.

[0079] The system can perform self-checks regularly and attempt to automatically repair minor problems detected (such as dust accumulation and mechanical jams).

[0080] If manual intervention is required, the system guides the operator through specific maintenance steps.

[0081] Specifically, the specific implementation steps of the automatic cleaning and maintenance module are as follows:

[0082] The system automatically triggers cleaning tasks based on run time or cumulative test count.

[0083] The user can also start the cleaning process manually.

[0084] Robot gripping structure: automatically removes dust or debris to ensure that the gripping accuracy is not affected.

[0085] Test probes: Use a small amount of cleaner or a physical wiper to remove oxides and contaminants and ensure contact stability.

[0086] Clean the internal pipes of temperature and humidity control equipment to prevent moisture or dust accumulation that may affect performance.

[0087] Add lubricating oil to mechanical parts (such as guide rails and gripping mechanisms) regularly to prevent wear or jamming.

[0088] Calibrate the accuracy of sensors and actuators to ensure long-term operational stability.

[0089] The system uses sensors to confirm the status of the parts after cleaning, such as whether the gripping force has returned to normal and whether the electrical contact of the probe is stable.

[0090] If the cleaning effect does not meet expectations, the system will remind the user to perform further maintenance.

[0091] The time, scope and results of each cleaning and maintenance will be recorded in the database to facilitate subsequent equipment management and maintenance tracking.

[0092] The automatic loading structure delivers the PCBA board to the test platform through the conveying system. The visual inspection module performs appearance quality inspection on the PCBA board while loading the board, including component position, polarity and welding quality. The inspection results are fed back to the automatic loading structure in real time. If unqualified products are found, the automatic unloading structure will separate the unqualified products.

[0093] After the test is completed, the automatic unloading structure classifies the PCBA boards according to their quality, and stores qualified and unqualified products separately; the data storage and analysis system records and associates the unique identification of each PCBA board in real time, including the QR code and barcode and the test results;

[0094] The robot gripping structure transfers the PCBA board from the upper board structure to the automated test-type load-bearing platform through the robot arm. After the test is completed, the robot arm moves the PCBA board to the lower board structure;

[0095] The automated test-type carrier platform provides a standardized physical test environment for Bluetooth performance testing. The environmental simulation module adjusts external environmental conditions, including temperature and humidity. The wireless signal shielding and interference suppression system cooperates with the automated test-type carrier platform to prevent the Bluetooth signal test process from being interfered by external wireless signals.

[0096] The fault diagnosis and alarm system monitors the working status of each module in real time, automatically stops operation and issues an alarm when a fault is detected, preventing unqualified products from entering the production chain; the automatic cleaning and maintenance module regularly maintains the robot arm and other key components;

[0097] The data storage and analysis system supports multiple communication interfaces, including USB, UART, and SPI, to connect to the test platform to achieve real-time data upload and processing; remote control and multi-language support functions are achieved through an integrated software control platform, allowing operators to remotely monitor, adjust test parameters, and troubleshoot equipment failures.

[0098] The automatic loading structure includes a base plate; a loading box and a conveying mechanism are arranged on the top of the base plate, a driving assembly is arranged at the bottom of the plate, a threaded assembly, a linkage assembly and a transmission assembly are rotatably connected to the top of the base plate, the driving assembly is meshed with the threaded assembly, a transmission belt is wound between the driving assembly and the linkage assembly, the linkage assembly and the transmission assembly are meshed with each other, an internal threaded barrel is threadedly connected to the top of the threaded assembly, a loading plate is fixedly connected to the top of the internal threaded barrel, a mounting frame is fixedly connected to the top of the loading box, a pushing assembly is rotatably connected to the side wall of the mounting frame, and the pushing assembly is meshed with the transmission assembly, a pushing plate is threadedly connected to the pushing assembly, a limiting rod is symmetrically fixedly connected to the inner side of the mounting frame, and the pushing plate is slidably set on the limiting rod.

[0099] The bottom plate of the automatic lower plate structure is provided with a conveying mechanism, a placement table, a placing frame and two sets of mounting frames on the top of the bottom plate, a linear transmission mechanism is fixedly installed between the two sets of mounting frames, the displacement end of the linear transmission mechanism is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a lifting component, a driving component is provided on the bottom side wall of the lifting component, a threaded block is symmetrically threaded on the output end of the driving component, a limiting rod is fixedly connected between the side walls at both ends of the bottom inner side of the lifting component, and the threaded block is slidably arranged on the limiting rod, a connecting rod is fixedly connected to the bottom of the threaded block, a clamping block is slidably arranged on the inner side of the connecting rod, a telescopic component is symmetrically arranged on the inner side of the connecting rod and the clamping block, an abutting component is arranged on the side wall of the clamping block, and a pressure sensor is arranged on the inner side of the connecting rod.

[0100] The robot gripping structure includes a robot and an electric gripper, a mounting shell is fixedly connected to the end of the robot arm, a threaded assembly is rotatably connected to the side wall of the mounting shell, a vertical plate is symmetrically threadedly connected to the threaded assembly, a fixing rod is symmetrically fixedly connected to the side where two groups of vertical plates are close to each other, a limiting rod is symmetrically fixedly connected between the side walls at both ends of the inner cavity of the mounting shell, a limiting block is symmetrically fixedly connected to the two ends of the vertical plate, and the limiting block is slidably arranged on the limiting rod, a mounting plate is fixedly connected to the side wall of the mounting shell, a constraint assembly which is mutually engaged with the threaded assembly is slidably arranged on the mounting plate, four groups of positioning frames are fixedly connected in an array on one side of the mounting shell away from the end of the robot arm, a mounting block is fixedly connected to the top of the electric gripper, and fixing grooves are symmetrically provided on the side walls at both ends of the mounting plate.

[0101] The automated testing bearing platform comprises a base plate and four sets of fixtures; the top of the base plate is symmetrically fixedly connected with slide rails, a slide table is slidably arranged between the tops of the two sets of slide rails, an electric telescopic rod 1 is fixedly installed on one side of the top of the base plate, and the telescopic end of the electric telescopic rod 1 is fixedly connected to the side wall of the slide table, the top of the slide table is fixedly connected with a test bench, four sets of electric telescopic rods 2 are fixedly installed at equal angles on the top of the test bench, the telescopic end of the electric telescopic rod 2 is fixedly connected with a vertical plate, a slot is provided on the side of the vertical plate close to the center of the test bench, a mounting frame is fixedly connected on the top of the vertical plate, a fixed component is slidably arranged on the top of the mounting frame, and the fixed component extends downward to the inside of the slot, a slide groove is provided on the side wall of the fixed component, a limiting groove is provided in the slide groove, a mounting plate is fixedly connected on one side of the top of the mounting frame, a limiting component inserted in the limiting groove is slidably arranged on the side wall of the mounting plate, a connecting plate is fixedly connected on one side of the top of the base plate, a cross plate is fixedly connected to the side wall of the connecting plate, a visual inspection component is arranged on the cross plate, a fixed groove is provided on one side of the top of the fixture, and a placement plate is fixedly connected on one side of the fixture close to the center of the test bench.

[0102] A testing method for a Bluetooth PCBA board testing machine comprises the following steps:

[0103] S1. The automatic board loading structure sends the PCBA board into the test process; the visual inspection module checks the component position, polarity and welding quality. The qualified boards enter the next stage, and the unqualified boards are separated by the automatic board unloading structure;

[0104] S2. The robot gripping structure transfers the plate to the automated test-type carrying platform; the automated test-type carrying platform calibrates the plate position so that the probe and the test point are accurately docked;

[0105] S3. The environmental simulation module adjusts the temperature and humidity conditions to simulate the working environment; the wireless signal shielding system is activated to avoid external interference; the test platform performs functional testing, RF performance testing and stability testing in turn;

[0106] S4. The data storage and analysis system records the test results and binds them to the unique identification information of the PCBA board;

[0107] The qualified boards are moved to the qualified bracket by the robot, and the unqualified boards are moved to the unqualified area;

[0108] S5. The fault diagnosis system monitors the equipment status in real time, alarms and interrupts the operation when abnormal; the automatic cleaning module regularly cleans key components to ensure test accuracy;

[0109] S6. Multi-station parallel testing function processes multiple plates at the same time; remote control and multi-language support functions facilitate operation and real-time management.

[0110] The visual inspection module includes the following steps:

[0111] S1-1. When the PCBA board enters the visual inspection area, the camera system of the visual inspection module is started to shoot the PCBA board to generate a high-resolution image;

[0112] S1-2. Analyze the captured images through the built-in image processing algorithm to identify whether each component is correctly installed in the designed position; confirm whether the polarity of capacitors and resistors is consistent with the design; detect whether there are cold solder joints, continuous solder joints, leaking solder joints and open circuits; identify whether there are scratches, contamination and other physical defects on the surface of the board;

[0113] S1-3. The test results are compared with the preset standards. If the qualified image analysis shows that the plate meets the standards, a signal is sent to the control system to allow it to enter the next link. When non-compliant components and defects are found, they are immediately marked and a signal is sent to the automatic unloading structure to instruct the non-compliant components to be removed from the production process.

[0114] The environmental simulation module includes the following steps:

[0115] S3-1-1. The system receives environmental parameters including temperature, humidity and air pressure input by the user according to preset requirements and test plans; environmental parameters are input through the touch interface and remote control software; standardized environmental modes are selected according to different test requirements, including high temperature and high humidity, low temperature and dryness;

[0116] S3-1-2. The environmental simulation module starts the heating and cooling units to adjust the temperature of the test area to the set value; adjusts the air humidity in the test area to the target range through humidification and dehumidification equipment; if special scene simulation is involved, adjusts the air pressure conditions through vacuum and pressure equipment;

[0117] S3-1-3. The built-in sensor system monitors the temperature, humidity and other parameters of the test environment in real time, so that the environmental conditions reach and remain within the set range; if parameter fluctuations are detected, the control system is automatically adjusted to quickly stabilize the environment;

[0118] S3-1-4. After the environmental conditions are stable, the PCBA board starts performance testing, including Bluetooth function, RF performance and stability testing. During the test, the environmental simulation module gradually changes the conditions according to the test requirements, including gradually increasing and decreasing the temperature, to verify the performance of the PCBA board in different environments.

[0119] S3-1-5. The sensor data and test results are uploaded to the data storage and analysis system synchronously, so that each test result corresponds to the corresponding environmental conditions; the system generates a record file containing environmental parameters and test data;

[0120] S3-1-6. If an abnormality occurs during the environmental simulation, including temperature exceeding the safe range and humidity adjustment failure, the fault diagnosis system will immediately alarm and suspend the test operation to prevent damage to the PCBA board and test equipment; the system will record the abnormality and notify the operator to troubleshoot the problem;

[0121] S3-1-7. After the test is completed, the environmental simulation module automatically returns to its initial state and cleans up residual water vapor, condensation and other impurities in the test area; the operator maintains the equipment on a periodic basis to ensure the long-term stable operation of the environmental simulation module.

[0122] The wireless signal shielding and interference suppression system includes the following steps:

[0123] S3-2-1. The system activates the wireless signal shielding cabin and shielding cover to completely isolate the test area from external wireless signals; the interior of the shielding cabin is made of conductive metal and shielding materials, blocking external radio frequency signals including Wi-Fi, 4G / 5G, and other Bluetooth devices from entering the test space;

[0124] S3-2-2. Use built-in filter modules and electromagnetic shielding materials to reduce the impact of electromagnetic interference generated by the electronic components inside the tester on Bluetooth performance testing; use shielded cables and differential signal transmission technology to isolate noise interference from the control circuit;

[0125] S3-2-3. The system has a built-in frequency selection module, which only allows signals in the target frequency range including the Bluetooth 2.4GHz band to enter the test process; in a shielded environment, a stable Bluetooth communication signal is generated through a reference transmitter to calibrate and test the RF performance of the PCBA board;

[0126] S3-2-4. The system has a built-in RF monitoring module that scans the wireless spectrum in the shielding cabin in real time to detect whether there is unexpected signal and internal reflection interference; if interference is detected, the system automatically adjusts the shielding cabin.

Claims

1. A Bluetooth PCBA board testing machine, characterized in that: The core structure of the Bluetooth PCBA board tester includes an automatic board loading structure, an automatic board unloading structure, a robot gripping structure and an automated test-type bearing platform; the auxiliary function modules include a visual detection module, an environmental simulation module, a wireless signal shielding and interference suppression system, a data storage and analysis system, a variety of communication interface support, a fault diagnosis and alarm system and an automatic cleaning and maintenance module; The automatic board loading structure delivers the PCBA board to the test platform through a conveying system, and the visual inspection module performs appearance quality inspection on the PCBA board while loading the board, including component position, polarity and welding quality; The detection results are fed back to the automatic plate loading structure in real time. If unqualified products are found, the automatic plate lowering structure will separate the unqualified products. After the test is completed, the automatic unloading structure classifies the PCBA boards according to their quality, and stores qualified products and unqualified products separately; the data storage and analysis system records and associates the unique identification of each PCBA board in real time, including the QR code and barcode and the test results; The robot gripping structure transfers the PCBA board from the upper plate structure to the automated test-type carrying platform through a mechanical arm, and after the test is completed, the mechanical arm moves the PCBA board to the lower plate structure; The automated test-type carrier platform provides a standardized physical test environment for Bluetooth performance testing, and the environmental simulation module adjusts external environmental conditions, including temperature and humidity; the wireless signal shielding and interference suppression system cooperates with the automated test-type carrier platform to prevent the Bluetooth signal test process from being interfered by external wireless signals; The fault diagnosis and alarm system monitors the working status of each module in real time, automatically stops operation and issues an alarm when a fault is detected, thereby preventing unqualified products from entering the production chain; the automatic cleaning and maintenance module regularly maintains the robot arm and other key components; The data storage and analysis system supports multiple communication interfaces, including USB, UART, and SPI, to connect to the test platform to achieve real-time data upload and processing; remote control and multi-language support functions are achieved through an integrated software control platform, allowing operators to remotely monitor, adjust test parameters, and resolve equipment failures.

2. The Bluetooth PCBA board testing machine according to claim 1, characterized in that: The automatic loading structure includes a base plate; a loading box and a conveying mechanism are arranged on the top of the base plate, a driving assembly is arranged on the bottom of the plate, a threaded assembly, a linkage assembly and a transmission assembly are rotatably connected to the top of the base plate, the driving assembly is meshed with the threaded assembly, a transmission belt is wound between the driving assembly and the linkage assembly, the linkage assembly and the transmission assembly are meshed with each other, an internal threaded cylinder is threadedly connected to the top of the threaded assembly, a loading plate is fixedly connected to the top of the internal threaded cylinder, a mounting frame is fixedly connected to the top of the loading box, a pushing assembly is rotatably connected to the side wall of the mounting frame, and the pushing assembly is meshed with the transmission assembly, a push plate is threadedly connected to the push assembly, a limiting rod is symmetrically fixedly connected to the inner side of the mounting frame, and the push plate is slidably arranged on the limiting rod.

3. The Bluetooth PCBA board testing machine according to claim 1, characterized in that: The automatic lower plate structure bottom plate, the top of the bottom plate is provided with a conveying mechanism, a placement table, a containing frame and two groups of mounting frames, a linear transmission mechanism is fixedly installed between the two groups of mounting frames, the displacement end of the linear transmission mechanism is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a lifting component, a driving component is provided on the bottom side wall of the lifting component, a threaded block is symmetrically threaded on the output end of the driving component, a limiting rod is fixedly connected between the side walls at both ends of the inner side of the bottom of the lifting component, and the threaded block is slidably arranged on the limiting rod, a connecting rod is fixedly connected to the bottom of the threaded block, a clamping block is slidably arranged on the inner side of the connecting rod, a telescopic component is symmetrically arranged on the inner side of the connecting rod and the clamping block, an abutting component is arranged on the side wall of the clamping block, and a pressure sensor is arranged on the inner side of the connecting rod.

4. The Bluetooth PCBA board testing machine according to claim 1, characterized in that: The robot gripping structure includes a robot and an electric clamp, the end of the robot arm is fixedly connected to a mounting shell, a threaded component is rotatably connected to the side wall of the mounting shell, a vertical plate is symmetrically threadedly connected to the threaded component, and a fixing rod is symmetrically fixedly connected to the side where two groups of vertical plates are close to each other, a limiting rod is symmetrically fixedly connected between the side walls at both ends of the inner cavity of the mounting shell, a limiting block is symmetrically fixedly connected at both ends of the vertical plate, and the limit block is slidably arranged on the limiting rod, a mounting plate is fixedly connected to the side wall of the mounting shell, and a constraint component that is mutually engaged with the threaded component is slidably arranged on the mounting plate, four groups of positioning frames are fixedly connected in an array on one side of the mounting shell away from the end of the robot arm, a mounting block is fixedly connected to the top of the electric clamp, and fixing grooves are symmetrically provided on the side walls at both ends of the mounting plate.

5. The Bluetooth PCBA board testing machine according to claim 1, characterized in that: The automated test-type bearing platform comprises a base plate and four groups of fixtures; the top of the base plate is symmetrically fixedly connected with slide rails, a slide table is slidably arranged between the tops of the two groups of slide rails, an electric telescopic rod 1 is fixedly installed on one side of the top of the base plate, and the telescopic end of the electric telescopic rod 1 is fixedly connected to the side wall of the slide table, the top of the slide table is fixedly connected with a test table, four groups of electric telescopic rods 2 are fixedly installed at equal angles on the top of the test table, the telescopic ends of the electric telescopic rods 2 are fixedly connected with vertical plates, a slot is provided on one side of the vertical plate close to the center of the test table, and a mounting frame is fixedly connected to the top of the vertical plate A fixing component is slidably provided on the top of the mounting frame, and the fixing component extends downward to the inside of the slot, a sliding groove is opened on the side wall of the fixing component, and a limiting groove is opened in the sliding groove, a mounting plate is fixedly connected to one side of the top of the mounting frame, and a limiting component inserted in the limiting groove is slidably provided on the side wall of the mounting plate, a connecting plate is fixedly connected to one side of the top of the base plate, and a cross plate is fixedly connected to the side wall of the connecting plate, a visual inspection component is arranged on the cross plate, a fixing groove is opened on one side of the top of the fixture, and a placement plate is fixedly connected to the side of the fixture close to the center of the test bench.

6. A Bluetooth PCBA board testing machine testing method, characterized in that: The method for testing a Bluetooth PCBA board testing machine comprises the following steps: S1. The automatic board loading structure sends the PCBA board into the test process; the visual inspection module checks the component position, polarity and welding quality. The qualified boards enter the next stage, and the unqualified boards are separated by the automatic board unloading structure; S2. The robot grasps the structure and transfers the plate to the automated test-type carrying platform; the automated test-type carrying platform calibrates the plate position so that the probe and the test point are accurately docked; S3. The environmental simulation module adjusts the temperature and humidity conditions to simulate the working environment; the wireless signal shielding system is activated to avoid external interference; the test platform performs functional testing, RF performance testing and stability testing in turn; S4. The data storage and analysis system records the test results and binds them to the unique identification information of the PCBA board; The qualified board is moved to the qualified bracket by the robot, and the unqualified board is moved to the unqualified area; S5. The fault diagnosis system monitors the equipment status in real time, alarms and interrupts the operation when abnormal; the automatic cleaning module regularly cleans key components to ensure test accuracy; S6. Multi-station parallel testing function processes multiple plates at the same time; remote control and multi-language support functions facilitate operation and real-time management.

7. A Bluetooth PCBA board testing machine testing method according to claim 6, characterized in that: The visual inspection module comprises the following steps: S1-1. When the PCBA board enters the visual inspection area, the camera system of the visual inspection module is started to shoot the PCBA board to generate a high-resolution image; S1-2. Analyze the captured images through the built-in image processing algorithm to identify whether each component is correctly installed in the designed position; confirm whether the polarity of capacitors and resistors is consistent with the design; detect whether there are cold solder joints, continuous solder joints, leaking solder joints and open circuits; identify whether there are scratches, contamination and other physical defects on the surface of the board; S1-3. The test results are compared with the preset standards. If the qualified image analysis shows that the plate meets the standards, a signal is sent to the control system to allow it to enter the next link. When non-compliant components and defects are found, they are immediately marked and a signal is sent to the automatic unloading structure to instruct the non-compliant components to be removed from the production process.

8. A Bluetooth PCBA board testing machine testing method according to claim 6, characterized in that: The environmental simulation module comprises the following steps: S3-1-1. The system receives environmental parameters including temperature, humidity and air pressure input by the user according to preset requirements and test schemes; the environmental parameters are input through the touch interface and remote control software; standardized environmental modes are selected according to different test requirements, including high temperature and high humidity, low temperature and dryness; S3-1-2. The environmental simulation module starts the heating and cooling units to adjust the temperature of the test area to the set value; adjusts the air humidity in the test area to the target range through humidification and dehumidification equipment; if special scene simulation is involved, adjusts the air pressure conditions through vacuum and pressure equipment; S3-1-3. The built-in sensor system monitors the temperature, humidity and other parameters of the test environment in real time, so that the environmental conditions reach and are maintained within the set range; if parameter fluctuations are detected, the control system is automatically adjusted to quickly stabilize the environment; S3-1-4. After the environmental conditions are stable, the PCBA board starts performance testing, including Bluetooth function, RF performance and stability testing. During the test, the environmental simulation module gradually changes the conditions according to the test requirements, including gradually increasing and decreasing the temperature, to verify the performance of the PCBA board in different environments. S3-1-5. The sensor data and test results are uploaded to the data storage and analysis system synchronously, so that each test result corresponds to the corresponding environmental conditions; the system generates a record file containing environmental parameters and test data; S3-1-6. If an abnormality occurs during the environmental simulation, including temperature exceeding the safe range and humidity adjustment failure, the fault diagnosis system will immediately alarm and suspend the test operation to prevent damage to the PCBA board and test equipment; the system will record the abnormality and notify the operator to troubleshoot the problem; S3-1-7. After the test is completed, the environmental simulation module automatically returns to its initial state and cleans up residual water vapor, condensation and other impurities in the test area; the operator maintains the equipment on a periodic basis to ensure long-term and stable operation of the environmental simulation module.

9. A Bluetooth PCBA board testing machine testing method according to claim 6, characterized in that: The wireless signal shielding and interference suppression system comprises the following steps: S3-2-1. The system starts the wireless signal shielding cabin and shielding cover to completely isolate the test area from external wireless signals; the interior of the shielding cabin is composed of conductive metal and shielding materials to block external radio frequency signals including Wi-Fi, 4G / 5G, and other Bluetooth devices from entering the test space; S3-2-2. Use built-in filter modules and electromagnetic shielding materials to reduce the impact of electromagnetic interference generated by the electronic components inside the tester on Bluetooth performance testing; use shielded cables and differential signal transmission technology to isolate noise interference from the control circuit; S3-2-3. The system has a built-in frequency selection module, which only allows signals in the target frequency range including the Bluetooth 2.4GHz band to enter the test process; in a shielded environment, a stable Bluetooth communication signal is generated through a reference transmitter to calibrate and test the RF performance of the PCBA board; S3-2-4. The system has a built-in RF monitoring module that scans the wireless spectrum in the shielding cabin in real time to detect whether there are unexpected signals and internal reflection interference; if interference is detected, the system automatically adjusts the signal reflection suppression parameters in the shielding cabin, including the working state of the absorbing material, to make the signal pure; S3-2-5. Test the Bluetooth module's transmission power, receiving sensitivity, and signal quality in a shielded environment to evaluate anti-interference and RF performance. In multi-station testing, the shielding system ensures that there is no signal crosstalk between test channels. S3-2-6. Record the Bluetooth signal strength, transmission rate, and bit error rate indicators through a radio frequency analyzer, and compare and analyze them with the standard values; upload the test results to the data storage and analysis system and bind them to the unique identification information of the board; S3-2-7. Regularly check the physical integrity of the shielding chamber to ensure that the shielding effect is not impaired; If external signal interference and shielding failure are detected, the system will immediately issue an alarm and suspend the test to avoid erroneous results.

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