The **SVF-3D-R** (commonly associated with SVI / Saki Global) is a high-performance **3D Automated Optical Inspection (AOI)** system designed for the Surface Mount Technology (SMT) manufacturing line. Below is an explanation of its core electronic components and systems. --- ### 1. Imaging & Optical Sensor System The "3D" capability relies on advanced imaging hardware to measure component height and volume. | Component | Function | | :--- | :--- | | **High-Resolution CMOS Camera** | Captures high-speed, high-definition images of the PCB. | | **Telecentric Lens** | Ensures constant magnification and eliminates perspective distortion. | | **DLP Projectors** | Uses Digital Light Processing to project "fringe patterns" (Moiré patterns) for height calculation. | | **Ring LED Lighting** | Multi-angle, multi-color (RGB) lighting to highlight solder fillets and polarity marks. | ### 2. Motion Control Electronics To inspect large PCBs rapidly, the system uses high-precision robotic movement. * **Linear Motors / Servo Motors:** Used for the X-Y gantry movement to position the camera head with micron-level accuracy. * **Encoders:** Optical linear scales that provide real-time feedback to the controller regarding the camera's exact position. * **Motion Control Card:** A dedicated PCIe or industrial bus card that synchronizes the pulses to the motors with the camera trigger. ### 3. Data Processing Unit (Computing Stack) The electronic "brain" of the SVF-3D-R must process gigabytes of image data in seconds. * **Industrial PC (IPC):** High-spec workstation usually running Windows-based inspection software. * **GPU Acceleration:** Uses high-end graphics cards (e.g., NVIDIA) to perform the heavy mathematical computations required for 3D reconstruction. * **Frame Grabber:** An interface card that transfers raw image data from the camera to the PC RAM at high speeds. ### 4. Interface and Connectivity * **SMEMA Interface:** The standard industrial communication protocol used to talk to the conveyor belts and other machines in the SMT line. * **I/O Modules:** Manage sensors (e.g., PCB arrival sensors, emergency stop buttons) and pneumatic valves for the conveyor width adjustment. --- ### Summary of Specifications (Typical) | Feature | Description | | :--- | :--- | | **Resolution** | Usually available in 12μm, 18μm, or higher options. | | **Measurement Principle** | Phase-shift Moiré (using 4 or more projectors). | | **Communication** | TCP/IP, SMEMA, and RS-232. | | **Power Input** | Single Phase 200V - 240V AC. |