System for remote powering and communication with a network of addressable, multichannel sensing modules

摘要: A multidrop network of multichannel, addressable sensing modules (ASM's), to be embedded within a composite structure, remotely powered, and interrogated by personal computer through non-contacting inductive link. Each ASM contains microprocessor with non-volatile memory, multiplexer, programmable gain filter instrumentation amplifier, sigma delta analog digital converter (all housed in two thin surface mount packages). An mothernode includes circuitry for power data reception (into the structure), transmission (back out structure). The external interrogation system communicates into ASM's modulating AC waveform that delivers electronics. Once addressed, each powers up its (gain & filter) channels (3 full differential or 5 pseudo differential) conversion elements. Sensed are pulse code modulated, including error checking, which serially modulate an RF carrier wireless interrogating computer. These advanced, micro-miniature networks may applied wide variety military, medical, civil structures.