PCBA (Printed Circuit Board Assembly) performance detection platform for electronic stability control system of vehicle body

Abstract

The invention relates to a vehicle body electronic stability control system PCBA performance detection platform, which comprises a control unit and an execution bottom plate, one or more PCBA burning test tools are installed on the execution bottom plate, each PCBA burning test tool comprises a test bottom plate, and a PCBA adapter plate and a PCBA test base for placing a PCBA are assembled on the test bottom plate; a probe for connecting the PCBA and the PCBA adapter plate is mounted on the PCBA test base; the top of the test pressing plate is controlled by a driving structure, and the driving structure is configured to drive the test pressing plate to move towards or away from the PCBA test base in the vertical direction; the bottom of the test pressing plate is provided with a plurality of press-fitting salient points, and the press-fitting salient points are configured to provide mechanical pressure for the PCBA as required. According to the ESC controller PCBA performance test platform, scattered test equipment is integrated on a unified platform, full-process automatic test is realized, the efficiency of ESC controller PCBA performance detection is greatly improved, a real vehicle environment is simulated, test items are fully covered, and the performance of an ESC system is ensured.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics technology, and more specifically to a PCBA performance testing platform for a vehicle electronic stability control system. Background Technology

[0002] With the continuous improvement of automotive safety performance, Electronic Stability Control (ESC) has become one of the key technologies for improving vehicle stability and safety. ESC systems achieve stable vehicle control by monitoring vehicle dynamic parameters in real time and adjusting the braking system and engine output force. Currently, there is no readily available PCBA performance testing platform for Electronic Stability Control (ESC) systems for pre-production testing of ECUs. Therefore, there is an urgent need to develop a PCBA performance testing system platform for Electronic Stability Control (ESC) systems to meet practical application requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a PCBA performance testing platform for vehicle electronic stability control systems to solve the problems existing in the background art.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a PCBA performance testing platform for a vehicle electronic stability control system, comprising:

[0005] The control unit includes an industrial computer, I / O boards, and a CAN communication card. The industrial computer is configured to run test management software, acquire and output digital signals through the I / O boards, and exchange data with the PCBA under test through the CAN communication card.

[0006] A relay is connected to the output terminal of the I / O board. By switching the state of the relay, the on-demand oil supply controller switching state is simulated. The output terminal of the relay is connected to the PCBA switching state control terminal.

[0007] The execution baseboard is equipped with one or more PCBA programming and testing fixtures, the PCBA programming and testing fixtures including:

[0008] A test base plate is provided, on which a PCBA adapter board and a PCBA test base for placing a PCBA are mounted; and the PCBA test base is provided with probes for connecting the PCBA and the PCBA adapter board.

[0009] The test plate has a top controlled by a drive structure, which is configured to drive the test plate to move vertically toward or away from the PCBA test base; the bottom of the test plate is equipped with multiple pressing protrusions, which are configured to provide mechanical pressure to the PCBA as needed.

[0010] Preferably, the detection platform further includes:

[0011] The programmer connected to the PCBA programming and testing fixture is used to program and verify the main control chip in the PCBA.

[0012] The Zebra DS22 barcode scanner is used to scan barcodes on PCBAs to enable product information binding and test data traceability.

[0013] Preferably, the testing platform further includes a load and simulation unit, the load and simulation unit comprising:

[0014] Wheel speed controller is used to simulate vehicle wheel speed signals and output standard sine or square wave signals to PCBA;

[0015] The electronic parking caliper, acting as the actual load, is connected to the output of the PCBA.

[0016] Preferably, the PCBA test base is provided with an elastic support structure to accommodate PCBAs of different thicknesses.

[0017] Preferably, the PCBA test base is mounted on the test base plate via a lower isolation column, and the PCBA adapter plate is located between the PCBA test base and the test base plate, and is fixed to the PCBA test base and the test base plate at intervals via the lower isolation column.

[0018] Preferably, the drive structure includes a cylinder base plate, a test cylinder mounted on the cylinder base plate, a guide adapter plate connected to the output end of the test cylinder via a floating joint, and the top of the test pressure plate being mounted on the bottom of the guide adapter plate via an upper isolation column.

[0019] Preferably, a test top plate is installed above the test base plate, and multiple tooling columns are installed between the test top plate and the test base plate. The guide adapter plate is sleeved on the tooling columns via a linear bearing.

[0020] Beneficial effects: This invention integrates dispersed testing equipment onto a unified platform, achieving fully automated testing throughout the entire process. This significantly improves the efficiency of ESC controller PCBA performance testing and reduces production time. It also reduces manual operation, lowers human error, and improves testing accuracy; reduces production costs, enhancing enterprise competitiveness; and covers a complete testing chain from software and hardware electrical characteristics to real load driving capabilities, simulating a real vehicle environment with comprehensive test coverage. Furthermore, it improves the stability and reliability of testing, ensuring the performance of the ESC system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the PCBA performance testing platform of the present invention;

[0022] Figure 2 This is a schematic diagram of the main frame structure of the PCBA performance testing platform of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the baseboard and multiple PCBA programming and testing fixtures of the present invention;

[0024] Figure 4 This is a schematic diagram of the PCBA programming and testing fixture of the present invention;

[0025] Figure 5 This is a schematic diagram of the valve island structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the PCBA performance testing process of the present invention.

[0027] The diagram is labeled as follows: 1. Frame; 11. Electrical control panel; 12. Isolating switch; 13. Air source processor; 2. Execution base plate; 21. Safety light curtain; 22. Valve island; 221. Valve seat; 222. Valve body; 223. Pipe connector; 3. PCBA programming and testing fixture; 31. Test base plate; 32. Probe; 33. PCBA adapter board; 34. Lower isolation column; 35. PCBA test base; 36. PCBA; 37. Fixture column; 38. Press-fitting protrusion; 39. Test pressure plate; 310. Upper isolation column; 311. Guide adapter board; 312. Linear bearing; 313. Floating connector; 314. Test top plate; 315. Test cylinder; 316. Cylinder base plate. Detailed Implementation

[0028] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0029] Example: Figures 1-4As shown, a PCBA performance testing platform for a vehicle electronic stability control system includes a frame 1, a control unit installed within the frame 1, and an industrial computer containing I / O boards and a CAN communication card. An electronic parking caliper serves as the actual load and is connected to the output of the PCBA 36. Among external devices, a programmable power supply is controlled by the industrial computer via a GPIB / USB interface; a Zebra DS22 barcode scanner is connected via a USB interface for scanning the PCBA. The barcode on PCBA 36 enables product information binding and test data traceability; the programmer connects via Ethernet or a dedicated interface to program and verify the main control chip in PCBA 36; the signal output of the opening / closing current sensor is connected to the data acquisition card of the industrial computer (or via the analog input channel of the I / O board); the wheel speed table and electronic parking caliper serve as loads and are connected to the test interface board via wiring harnesses; the signal output of the safety light curtain 21 is connected to the safety input point of the I / O board; the control signal of the valve island 22 is provided by the output point of the I / O board; the industrial computer is configured to run test management software, realize the acquisition and output control of digital signals through the I / O board, and exchange data with the PCBA 36 under test through the CAN communication card; the relay is connected to the output of the I / O board, and the switching state of the relay is used to simulate the on-demand oil supply controller switching state, and the relay output is connected to the PCBA 36 switching state control terminal;

[0030] refer to Figure 1 and Figure 2 As shown, frame 1 is the basic support structure of the entire testing platform, supporting core components such as the industrial control computer, wheel speed controller, and electronic parking caliper. The wheel speed controller is used to simulate vehicle wheel speed signals and outputs standard sine or square wave signals to the PCBA. 36. Frame 1 adopts a modular design, which facilitates expansion or adjustment according to different testing needs, reduces maintenance and upgrade costs, and improves the platform's flexibility. A shock-absorbing pad or structure is added to the bottom of frame 1 to reduce the impact of external vibrations on testing accuracy, improving the platform's stability and durability and ensuring reliable long-term operation. An electrical control panel 11 is installed inside frame 1 as the electrical control unit of the testing platform, responsible for managing power distribution, signal transmission, and equipment control. Integrating the electrical control panel 11 with frame 1 reduces the clutter of external cables, improving overall aesthetics and safety. An isolating switch 12 is installed on one side of frame 1 to cut off the power in emergencies, ensuring operator safety. This embodiment employs a dual protection mechanism, adding electrical and mechanical dual protection mechanisms to the isolating switch 12 to ensure rapid power cut-off under any circumstances, improving operational safety and reducing accident risks. An air source processor 13 is installed on one side of frame 1 to provide a stable air source to drive pneumatic components such as cylinders. This embodiment adds a multi-stage filtration system to ensure the purity of the air source, reduce wear on pneumatic components, increase the service life of pneumatic components, and reduce maintenance costs.

[0031] refer to Figure 1 and Figure 3 As shown, an execution base plate 2 is installed within the frame 1. Two PCBA programming and testing fixtures 3 are mounted on the execution base plate 2 for automatic and precise positioning, electrical connection, and mechanical pressing of the PCBA 36 under test. Safety light curtains 21 are installed on both sides of the execution base plate 2 to detect whether operators have entered the danger zone and ensure safe operation of the equipment. A valve island 22 is installed on the execution base plate 2 near the PCBA programming and testing fixtures 3. (Refer to...) Figure 5 As shown, the valve island 22 includes a valve seat 221, multiple valve bodies 222 integrated thereon, and a pipe connector 223, which are used to centrally control the air passage opening and closing of the test cylinder 315 and other pneumatic components, and to receive instructions from the I / O board to perform actions.

[0032] refer to Figure 4 As shown, each PCBA programming and testing fixture 3 includes:

[0033] The test base plate 31 is equipped with a PCBA adapter board 33 and a PCBA test base 35 for placing a PCBA 36. The PCBA test base 35 is provided with an elastic support structure to accommodate PCBAs 36 of different thicknesses. The PCBA test base 35 is also equipped with probes 32 for connecting the PCBA 36 and the PCBA adapter board 33.

[0034] In this embodiment, the PCBA test base 35 is mounted on the test base plate 31 via the lower isolation column 34, and the PCBA adapter plate 33 is located between the PCBA test base 35 and the test base plate 31, and is fixed to the PCBA test base 35 and the test base plate 31 at intervals via the lower isolation column 34.

[0035] The test pressure plate 39 is controlled by a drive structure at its top. The drive structure is configured to drive the test pressure plate 39 to move vertically toward or away from the PCBA test base 35. The bottom of the test pressure plate 39 is equipped with multiple pressing protrusions 38, which are configured to provide mechanical pressure to the PCBA 36 as needed. The drive structure includes a cylinder base plate 316, a test cylinder 315 mounted on the cylinder base plate 316, and a guide adapter plate 311 connected to the output end of the test cylinder 315 via a floating joint 313. The top of the test pressure plate 39 is mounted on the bottom of the guide adapter plate 311 via an upper isolation column 310. A test top plate 314 is mounted above the test base plate 31. Multiple tooling columns 37 are installed between the test top plate 314 and the test base plate 31. The guide adapter plate 311 is sleeved on the tooling columns 37 via a linear bearing 312.

[0036] refer to Figure 6As shown, during the PCBA 36 performance testing process:

[0037] Material loading and barcode scanning: The operator places the PCBA 36 to be tested into the designated position on the PCBA test base 35, triggers the barcode scanning, and the Zebra DS22 barcode scanner reads the product barcode and uploads the information to the industrial control computer.

[0038] Automatic crimping: The industrial control computer controls the valve island 22 to move, driving the test cylinder 315 downward, which in turn moves the test pressure plate 39 downward. The pressure is provided by the pressing protrusions 38 to ensure that the probe 32 makes reliable contact with the contacts on the PCBA adapter board 33, thereby connecting all test circuits.

[0039] The programmer programs and verifies the PCBA 36 through the connected circuit; if the programming fails, the screen will display the fault type, requiring manual intervention.

[0040] Automated testing according to the system's preset process:

[0041] The programmable power supply outputs different voltages in sequence, and the power adaptability, static power consumption and input / output port electrical characteristics of PCBA 36 are tested in combination with relay group switching.

[0042] The wheel speed tester outputs an analog signal to test the sensor signal acquisition and processing function of PCBA 36;

[0043] Through the I / O board and CAN communication card, simulated vehicle status commands and network messages are sent to the PCBA, and their responses are received to test the logic functions and communication protocols.

[0044] The industrial control computer sends clamping / releasing commands, and the tested PCBA 36 drives the electronic parking caliper to move. The opening and closing current sensor monitors the working current throughout the process, and the industrial control computer analyzes the current curve to determine whether the performance of the drive circuit matches the load.

[0045] After all tests are completed, the industrial control computer makes a comprehensive judgment, stores the data and associates it with the barcode information; the test cylinder 315 rises and resets, and the operator takes out the tested PCBA 36.

[0046] The embodiments of the present invention have been described in detail above with reference to the examples. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents described in the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A PCBA performance testing platform for a vehicle electronic stability control system, characterized in that, include: The control unit includes an industrial computer, I / O boards, and a CAN communication card. The industrial computer is configured to run test management software, acquire and output digital signals through the I / O boards, and exchange data with the PCBA under test through the CAN communication card. A relay is connected to the output terminal of the I / O board. By switching the state of the relay, the on-demand oil supply controller switching state is simulated. The output terminal of the relay is connected to the PCBA switching state control terminal. The execution baseboard is equipped with one or more PCBA programming and testing fixtures, the PCBA programming and testing fixtures including: A test base plate is provided, on which a PCBA adapter board and a PCBA test base for placing a PCBA are mounted; and the PCBA test base is provided with probes for connecting the PCBA and the PCBA adapter board. The test plate has a top controlled by a drive structure, which is configured to drive the test plate to move vertically toward or away from the PCBA test base; the bottom of the test plate is equipped with multiple pressing protrusions, which are configured to provide mechanical pressure to the PCBA as needed.

2. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 1, characterized in that: The testing platform also includes: The programmer connected to the PCBA programming and testing fixture is used to program and verify the main control chip in the PCBA. The Zebra DS22 barcode scanner is used to scan barcodes on PCBAs to enable product information binding and test data traceability.

3. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 1, characterized in that: The testing platform also includes a load and simulation unit, which includes: Wheel speed controller is used to simulate vehicle wheel speed signals and output standard sine or square wave signals to PCBA; The electronic parking caliper, acting as the actual load, is connected to the output of the PCBA.

4. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 1, characterized in that: The PCBA test base is equipped with an elastic support structure to accommodate PCBAs of different thicknesses.

5. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 1, characterized in that: The PCBA test base is mounted on the test base plate via a lower isolation column, and the PCBA adapter plate is located between the PCBA test base and the test base plate, and is fixed to the PCBA test base and the test base plate at intervals via the lower isolation column.

6. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 1, characterized in that: The drive structure includes a cylinder base plate, a test cylinder mounted on the cylinder base plate, a guide adapter plate connected to the output end of the test cylinder via a floating joint, and the top of the test pressure plate is mounted on the bottom of the guide adapter plate via an upper isolation column.

7. The PCBA performance testing platform for a vehicle electronic stability control system according to claim 6, characterized in that: A test top plate is installed above the test base plate, and multiple tooling columns are installed between the test top plate and the test base plate. The guide adapter plate is sleeved on the tooling columns through a linear bearing.

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