基于PXI系統(tǒng)將機器視覺，電氣測試和物理測量結合在綜合的產品系統(tǒng)中。 2007年7月17日，北美主要的重型卡車制造商Freightliner LLC,選擇NI的LabVIEW軟件和基于PXI的硬件代替基于VME所有權解決方案，用于檢驗其新重型卡車電氣化裝配。利用NI的工具，Freightliner工程師集電氣測試，機器視覺和物理測量融入到一個系統(tǒng)，不僅保證了卡車的高質量性，還可以指導正確的裝配過程。 Freightliner LLC的測試兼技術生產經理John Rokus說：“我們開始設計一種高性能測試系統(tǒng)可以給我們提供靈活的現貨供應解決方案，提供開放式架構和用于未來擴充應用的動力供應。這一系統(tǒng)能夠傳輸Freightliner滿意的內外部資源，有助于其成功發(fā)展?！? Freightliner選擇Wineman科技公司，一個專業(yè)機械設計者和NI聯(lián)合一起制造了測試系統(tǒng)來滿足Freightliner的要求。Wineman技術公司擁有豐富的使用基于PXI系統(tǒng)滿足用戶需求的經驗。平臺的功能性用于傳輸靈活性的性能，以及比以前系統(tǒng)更經濟有效，使得自然選擇用于這一應用。與電氣物理測量一起，新解決方案包含有用于檢查保險絲盒組裝的機器視覺系統(tǒng)。該系統(tǒng)所攜帶的工業(yè)級照相機，是建立在客戶固定設備之上的，外加寫在LabVIEW里面的軟件。 軟件與工廠信息系統(tǒng)之間的通信，用于收集適用于每一輛卡車的構造順序。軟件隨后使用圖形化程序幫助操作者將保險絲和繼電器放置到合適位置（保險絲盒或是開關激活模塊SAM）。一經完成，操作者可以利用系統(tǒng)采用板上組裝的數據圖片，防止電腦生成的圖片產生錯誤。如果發(fā)生失敗，軟件就會鎖住發(fā)生錯誤的地方，通知操作者，哪處的保險絲或是繼電器發(fā)生錯誤，圖形化識別其正確的布置。 Wineman科技公司銷售兼營銷副總裁Darryn La Zar說：“利用機器視覺系統(tǒng)檢查在工業(yè)標準之外的保險絲的連續(xù)性。例如，該解決方案能探測出一個30A的保險絲插了5A的槽中，類似于這種情況在以前是不可能測出來的?！? 一旦測試完成，累積的脫機報告可為技術人員提供一個交互式資源，為任何一輛卡車觀察先前測試系統(tǒng)。產生一系列將要執(zhí)行的動作列表，任何失敗在站內是不能修復的。此外，如果有任何特的卡車要求額外安裝和確認，該系統(tǒng)將會遵從這些要求以便技術人員可以保證在車輛推出之前完成工作。 對更多LabVIEW感興趣的讀者請登錄：www.ni.com/labview. original text [COLOR=#708090]Freightliner Selects National Instruments LabVIEW and PXI to Verify Truck Assembly PXI-Based Systems Combine Machine Vision, Electrical Test and Physical Measurements in Comprehensive Production Test Systems NEWS RELEASE – July 17, 2007 – Freightliner LLC, the leading heavy-duty truck manufacturer in North America, selected NI LabVIEW software and NI PXI-based hardware to replace a VME-based proprietary solution for verifying electrical assembly on its new line of heavy-duty trucks. Using NI tools, Freightliner engineers integrated electrical test, machine vision and physical measurements into a system that not only ensures high-quality vehicles but also instructs operators on the correct assembly process. “We set out to design a high-performance test system that would give us the flexibility of a completely off-the-shelf solution and provide both the open architecture and power for expanding the application in the future,” said John Rokus, manufacturing manager of Test and Technology at Freightliner LLC. “This system delivers on both requirements and the successful development is reflective of the valuable relationships Freightliner enjoys with both external and internal resources.” Freightliner chose Wineman Technology Inc., a specialty machine designer and a leading National Instruments Alliance Partner, to create the test systems to meet Freightliner’s requirements. Wineman Technology has a strong history of meeting customer needs using PXI-based systems. The platform’s ability to deliver on flexibility and performance, as well as be more cost-effective than the previous system, made it a natural choice for this application. Along with electrical and physical measurements, the new solution includes a machine vision system for inspecting fuse box assembly. This system features industry-standard cameras that were built into a custom fixture and coupled with software written in LabVIEW. The software communicates with the plant information system to acquire a build order specific to each truck. The software then graphically prompts the operator to place the fuses and relays in their proper positions in the fuse box or switch activation module （SAM）. Once finished, the operator prompts the system to take a digital picture of the populated assembly and compares it to the computer-generated image of the build order to produce a pass or fail rating. In the event of a failure, the software locks the part in place and notifies the operator which fuse or relay has been placed incorrectly and graphically identifies the part and its correct placement. “Using machine vision to verify the assembly of the fuse box goes beyond the industry standard of validating serial fuse continuity,” said Darryn La Zar, vice president of Sales and Marketing at Wineman Technology. “For instance, this solution can detect if a 30 A fuse is in a 5 A slot, which was not possible before.” Once the tests are completed, a Cumulative Offline Report provides an interactive resource for technicians to view results of all previous test systems for any given truck. A “to do” list is generated in the event that any test failures could not be repaired in station. In addition, if there are any special truck options that require additional setup or validation, this system compiles those requirements so that a technician can be sure to address them prior to releasing the vehicle. Readers interested in learning more about LabVIEW can visit www.ni.com/labview. [/COLOR]