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LabVIEW-based system components for military

submarines compact test system

\that the new system can not only use modern test equipment and methods, but without sacrificing functionality under the premise of the current test system cost is only a small part.\

Vickie Hoffmann, Orbis Inc.

LabVIEW graphics of signal processing platform by syllabary signal processing, and analysis and mathematics operations function composition of signal processing and mathematics function library composition, contains Wavelet transform, and time-frequency analysis, and image processing, and filter design, and sound and vibration, and system identification, and RF analysis, professional method of tool package, while compatible. m file, mathematics script language and function interface, may and NI hardware of seamless combination, makes algorithm get fast validation and deployment. LabVIEW signal processing platform has been successfully used in electronics, telecommunications, electrical and mechanical, chemical, medical, aerospace, physics and other fields of teaching and research work.

Challenge

Based VERSAmodule European standard bus (VME bus) test equipment is often used submarine system, verify whether the module is in its sub-components can be ready to use (ready for issue, RFI) state requires the use of large, complex, and laboratory environments testing equipment, and requires all the sub-components of the module in a unified center for testing.

Solution

Use compact the NI PXI modular instruments, LabVIEW software and NI TestStand to develop and VME bus test equipment test function with the same military test systems, while significantly reducing the size, reduce complexity and

costs, so that the Navy can be deployed in the test system strategic location, and reduce overall maintenance costs and submarine fleet logistics costs.

Orbis Inc. (Orbis) is a company with 130 employees of small businesses, is headquartered in the state of South Carolina in Charleston. Its core business is the U.S. Department of Defense (DoD) to provide engineering and project management services. Orbis is also committed to conduct cutting-edge research and development projects, focusing on developing innovative automated test systems (ATS).

To meet military needs

Critical operational systems and support suite many systems based on VME technology. These systems maintenance and troubleshooting involves sub-assemblies between the module and the RFI spare parts are interchangeable. System troubleshooting procedures use any of the modules must be re-tested and verified before they can return to RFI status and kept as a spare. As the traditional system, all tests were carried out in a central position, the total cost of ownership will increase. In addition to the cost of transport module, another major cost from the parts to maintain sufficient inventory to replace being tested and the components during transport. Based on the automated testing and functional testing for the U.S. Department of Defense to write code for the experience, the Navy found Orbis to help them develop a compact, flexible and can meet or exceed the existing test systems functional prototype test system. We have successfully built a prototype to demonstrate the new system can not only use modern testing equipment and methods, and in the premise without sacrificing functionality test systems currently cost only a small part.

From the NI PXI modular instruments to find solutions

By using the stand-alone instruments and modular instruments for comparing various solutions, we decided to use PXI modular instrumentation platform, because we need a compact and flexible test system. Next, we analyzed the suppliers, chose NI PXI devices as the sole supplier because the company is the leader in PXI, NI offers a wide range of PXI modules to meet the needs of our test systems and technical requirements, the The company also provides a \PXI platform for our development provides a good start, because NI Modules and LabVIEW to ensure that all devices can communicate without having to create custom device drivers.

We use two NI PXI-2531 module to create an 8 × 128 crosspoint switch matrix

to the PXI measurement module connected to all points on the mass interconnect interface test adapters (ITA). With this switch matrix, we have to connect to the ITA DUT (UUT) to achieve full functional test configurations all the required connections. Additionally, we will VME interface is integrated into the test system and connect it to the ITA, which provides for each UUT comprehensive VME bus test.

Integrated NI PXI and LabVIEW, NI TestStand

We primarily written in LabVIEW and NI TestStand test systems test assembly. By eliminating the need to write custom drivers, NI software greatly simplifies the hardware and software systems integration. After starting the program, LabVIEW will call each PXI modules for self-test operation, check the calibration date is valid, and then the functional tests. Each test written in LabVIEW, NI TestStand to call in the execution. The end of the test execution, the test will be based on the collected data and generate a readable report can be exported in XML format.

NI Technology List

Our application through the NI PXI-8108 embedded controller to achieve the management tasks through the NI PXI-6653 and NI PXI-6651 module to control the timing and synchronization. For the connection, cycle computing and communications, we use NI PXI-7813R to achieve data integration, NI PXI-7853R module process connection and signal processing as well as NI PXI-7854R module for signal processing.

In order to develop the current stabilization system, we use NI LabVIEW 2010 software, LabVIEW FPGA Module and the LabVIEW Real-Time Module. Development process largely depends on training and NI LabVIEW volume license agreement.

Changing views on Compact ATS

Orbis will PXI-based test system with a custom ITA and VME interfaces combine design and build a prototype called Compact Tester test system. Compact Tester with 12 cubic feet of 18-slot PXI chassis test system replaces the 84 cubic feet of test systems. Compared with the previous test systems, cost reduction of 3 times, 15 times smaller footprint, weight 25 times, this difference is very significant. In addition, the use of industry-standard PXI hardware and LabVIEW software, we were also able to reduce the daily operation and maintenance costs.

In addition to achieving all the goals set for the Compact Tester, the PXI-based