The NI Ethernet Structural Health Monitoring (SHM) System is based on NI CompactRIO, which is a low-cost reconfigurable control and acquisition system designed for applications that require high performance and reliability. The system combines an open embedded architecture with small size, extreme ruggedness, and hot-swappable industrial I/O modules. CompactRIO is powered by reconfigurable I/O (RIO) field-programmable gate array (FPGA) technology.
The NI Ethernet SHM System features four accelerometer and four strain input channels; however, the system is configurable for up to 64 channels. The accelerometer channels offer software-selectable IEPE signal conditioning, 24-bit resolution, 102 dB dynamic range, 51.2 kS/s maximum simultaneous sampling, and antialiasing filters. The strain channels provide 24-bit resolution, 50 kS/s maximum simultaneous sampling, programmable half- and full-bridge completion, 1000 Vrms transient isolation, and transducer electronic data sheet (TEDS) smart sensor compatibility. The system also offers mixed-measurement capability for temperature, voltage, and other variables.
