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Our company's advantages in general-purpose functional testing instruments

Our company's advantages in general-purpose functional testing instruments

1. The programming and testing interfaces are separated: The programming interface allows users to create test files, while the testing interface handles the actual testing process. Additionally, password protection is provided to prevent unauthorized modifications to the testing program, ensuring data security and reliability. 2. A table-based programming interface is used (similar to the inspection process documentation format commonly employed in the field), making it easy to create test steps and allowing users to freely rearrange the sequence of steps or combine test timing and logical relationships as needed. 3. Modular design approach is adopted—both in software and hardware development—with dedicated expansion interfaces built-in. This ensures that when customers have new testing requirements, relevant software and hardware extension modules can be quickly developed to meet their evolving needs.

2015-11-13

How is machine vision inspection implemented?

How is machine vision inspection implemented?

Visual inspection essentially involves first capturing an image of a合格 (qualified) workpiece. This image then serves as the benchmark against which other workpieces are compared. A (adjustable) threshold is set: if the degree of similarity between a workpiece and the reference exceeds this threshold, the part is deemed合格; otherwise, it’s considered不合格. Is this understanding correct? And if the workpiece being inspected isn’t precisely positioned within the captured area—perhaps it’s rotated at an angle or slightly misaligned—could this affect the inspection results? Could you provide a simple explanation of how this might impact the process?

2015-11-13

Can AOI automated optical inspection equipment replace ICT?

Can AOI automated optical inspection equipment replace ICT?

1. Differences in Detection Principles: ICT (In-Circuit Tester) functions like a powerful, multi-purpose digital multimeter. It primarily relies on test probes that make contact with the test points laid out on the PCB to detect open circuits, short circuits, and verify the soldering status of all components. The testing process includes open-circuit checks, short-circuit tests, resistance measurements, capacitance tests, diode tests, transistor tests, field-effect transistor tests, and IC pin inspections. Additionally, it can identify common and specialized component issues such as missing parts, misaligned components, incorrect parameter values, solder bridging, and open/short circuits on the circuit board—precisely pinpointing which component is faulty or exactly where the open/short occurred. On the other hand, AOI detects SMT components by simulating a manual visual inspection performed by workers. This process uses a ring-shaped, tower-like illumination system equipped with tri-color LED lights—red (R), green (G), and blue (B)—to evenly light up the PCB from multiple angles. When these colored lights combine, they produce white light (W), which is directed onto the PCB to provide 360-degree, comprehensive illumination of the components being tested. By analyzing the reflections—whether specular, diffuse, or grazing—AOI captures distinct color information from the component body, solder joints, and pads, enabling accurate identification of defects.

2015-11-13

What items can AOI optical inspection equipment detect in the PCB industry?

What items can AOI optical inspection equipment detect in the PCB industry?

PCB bare boards come in single-sided, double-sided, and multilayer versions. For single- and double-sided boards, automated optical inspection systems are widely available on the market. Theoretically, our equipment can handle inspections for both single- and double-sided boards. However, when it comes to multilayer boards, we’re currently at a loss. First, let’s clarify what we can actually inspect in the PCB bare board industry: 1. In the PCB bare board sector, the typical requirement is to detect open and short circuits in the board’s wiring—this process is similar to our ICT testing, focusing solely on identifying open or shorted connections. Some high-end applications even include impedance testing. That said, this industry usually relies on dedicated ICT systems, which, while technically straightforward, involve a massive number of test points—often around 10,000 points. 2. For PCB bare boards using copper-clad laminates or solder-plating processes, the key concern is ensuring that copper or tin foils don’t inadvertently bridge into areas coated with green oil, causing shorts. This issue can be effectively addressed using AOI (Automated Optical Inspection) systems. 3. Additionally, PCB bare boards often feature numerous component sockets, slots, and other intricate features, many of which have tight dimensional tolerances. To verify whether these components fall within the specified tolerances, our AOI systems are perfectly suited for performing precise dimension measurements.

2015-11-13

Successful Case Study of the Functional Tester

Successful Case Study of the Functional Tester

At our company, our FCT can test everything from the internal control systems of missiles to the functionality of individual IC components—no component is too small or too complex. The primary function of our FCT is to measure critical electrical parameters of circuit boards when they’re either operating in their actual working state or simulating real-world conditions. These include voltage, current, waveforms, frequency, phase, and more. Essentially, if a device’s technical specifications can be measured using standard instruments, our FCT is equipped to test it—by seamlessly integrating the necessary tools directly into our FCT platform. This versatile testing solution is ideal for applications across industries such as aerospace, defense, automotive electronics, consumer appliances, railway systems, and virtually any field where functional testing is required.

2015-11-13

The differences between machine vision testing and human visual perception in today's market

The differences between machine vision testing and human visual perception in today's market

Human vision possesses highly advanced intelligence, enabling it to leverage logical analysis and reasoning when identifying objects, as well as to discern underlying patterns. Moreover, the human visual system exhibits exceptional color-discrimination capabilities—but this ability is surprisingly susceptible to psychological influences, making it difficult to quantify accurately. At the same time, our eyes aren’t very adept at distinguishing shades of gray; typically, we can only perceive around 64 distinct grayscale levels. Additionally, our spatial resolution isn’t stellar—making it nearly impossible for us to clearly see extremely small objects.

2015-11-13

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