描述
产品概述
National Instruments（NI）的IMAQ PCI-1422是一款高性能的图像采集卡，专为机器视觉和工业成像应用设计。它基于PCI总线架构，支持高速、高分辨率的模拟和数字视频信号采集，并与NI的视觉开发软件（如LabVIEW、Vision Builder AI）无缝集成，广泛应用于自动化检测、质量控制、科研成像等领域。
核心功能
多格式视频输入支持
支持模拟信号（NTSC/PAL复合视频、S-Video、分量视频）和数字信号（RS-644 LVDS、Camera Link）。
兼容多种工业相机接口，包括标准模拟相机和部分数字相机。
高速图像采集
最大采集分辨率：768×576（PAL）或640×480（NTSC）（模拟输入）。
数字输入支持更高分辨率（取决于相机，如Camera Link相机可达数百万像素）。
支持实时采集与处理，帧率最高可达30 fps（NTSC）或25 fps（PAL）（模拟输入）。
硬件触发与同步
提供外部触发输入（TTL电平），支持精确的帧同步和事件触发。
可与其他NI硬件（如DAQ卡、运动控制卡）同步，实现多系统协同工作。
图像处理与传输
板载内存：4 MB（可缓存多帧图像，减少数据丢失风险）。
通过PCI总线（32位/33 MHz）将图像数据高速传输至计算机内存，支持实时分析。
软件兼容性
完全兼容NI的IMAQ Vision库和LabVIEW视觉模块，简化开发流程。
支持C/C++、Visual Basic等第三方开发环境，通过NI-IMAQ驱动调用。
技术规格
接口类型：
模拟输入：1×BNC（复合视频）、1×S-Video、3×BNC（分量视频）。
数字输入：1×Camera Link接口（支持Base或Lite模式）。
最大分辨率：
模拟：768×576（PAL）或640×480（NTSC）。
数字：取决于Camera Link相机（如1280×1024 30 fps）。
帧率：
模拟：30 fps（NTSC）或25 fps（PAL）。
数字：由相机决定（最高可达数百fps）。
触发方式：外部TTL触发输入（可配置上升沿/下降沿）。
PCI规格：32位/33 MHz PCI总线，符合PCI 2.2标准。
操作系统支持：Windows XP/7/10（32/64位）、Linux（需NI驱动支持）。
工作温度：0°C至55°C（工业级型号可能支持更宽范围）。
应用场景
工业自动化检测
用于产品表面缺陷检测、尺寸测量、条码识别等。
科研与医疗成像
显微镜图像采集、细胞分析、X光/CT图像处理。
交通监控
车辆识别、车牌抓拍、交通流量分析。
机器人视觉
引导机器人完成抓取、装配等任务。
优势总结
灵活性：支持模拟和数字相机，适应不同预算和性能需求。
高性能：高速采集与传输，满足实时处理要求。
易集成：与NI软件生态无缝对接，缩短开发周期。
可靠性：工业级设计，适合长时间稳定运行。
Product Overview
National Instruments(NI)IMAQ PCI-1422 is a high-performance image acquisition card designed for machine vision and industrial imaging applications.It is based on the PCI bus architecture,supports high-speed,high-resolution analog and digital video signal acquisition,and seamlessly integrates with NI’s visual development software(such as LabVIEW,Vision Builder AI),and is widely used in automated inspection,quality control,scientific research imaging and other fields.
Core Functions
Multi-format video input support
Supports analog signals(NTSC/PAL composite video,S-Video,component video)and digital signals(RS-644 LVDS,Camera Link).
Compatible with a variety of industrial camera interfaces,including standard analog cameras and some digital cameras.
High-speed image acquisition
Maximum acquisition resolution:768×576(PAL)or 640×480(NTSC)(analog input).
Digital input supports higher resolution(depending on the camera,such as Camera Link cameras up to millions of pixels).
Supports real-time acquisition and processing,with a frame rate of up to 30 fps(NTSC)or 25 fps(PAL)(analog input).
Hardware triggering and synchronization
Provides external trigger input(TTL level)to support accurate frame synchronization and event triggering.
Can be synchronized with other NI hardware(such as DAQ cards,motion control cards)to achieve multi-system collaboration.
Image processing and transmission
Onboard memory:4 MB(can cache multiple frames of images to reduce the risk of data loss).
Transfer image data to computer memory at high speed via PCI bus(32-bit/33 MHz)to support real-time analysis.
Software compatibility
Fully compatible with NI’s IMAQ Vision library and LabVIEW vision module to simplify the development process.
Supports third-party development environments such as C/C++and Visual Basic,and is called through the NI-IMAQ driver.
Technical specifications
Interface type:
Analog input:1×BNC(composite video),1×S-Video,3×BNC(component video).
Digital input:1×Camera Link interface(supports Base or Lite mode).
Maximum resolution:
Analog:768×576(PAL)or 640×480(NTSC).
Digital:Depends on the Camera Link camera(e.g.1280×1024 30 fps).
Frame rate:
Analog:30 fps(NTSC)or 25 fps(PAL).
Digital:Determined by the camera(up to hundreds of fps).
Trigger mode:External TTL trigger input(configurable rising/falling edge).
PCI specification:32-bit/33 MHz PCI bus,compliant with PCI 2.2 standard.
Operating system support:Windows XP/7/10(32/64-bit),Linux(NI driver support required).
Operating temperature:0°C to 55°C(industrial-grade models may support a wider range).
Application scenarios
Industrial automation inspection
Used for product surface defect detection,dimensional measurement,barcode recognition,etc.
Scientific research and medical imaging
Microscope image acquisition,cell analysis,X-ray/CT image processing.
Traffic monitoring
Vehicle recognition,license plate capture,traffic flow analysis.
Robot vision
Guide robots to complete tasks such as grasping and assembly.
Advantages summary
Flexibility:Supports analog and digital cameras to adapt to different budgets and performance requirements.
High performance:High-speed acquisition and transmission to meet real-time processing requirements.
Easy integration:Seamless integration with NI software ecosystem to shorten development cycle.
Reliability:Industrial-grade design,suitable for long-term stable operation.
