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Design of NCAP Based on IEEE1451 Standard

In consideration of the interchangeability and interoperability of the sensors from different manufacturers, this paper proposes a scheme which can replace the software with the hardware to realize the Network Capable Application Processor (NCAP) in the networked smart sensor node according to the IEEE 1451 standard. Since SST89E564RD is its Microcomputer Control Unit (MCU), the system selects the W3150A chip of hard protocol stack to solve the problem of TCP/IP and make network communication into reality. The drivers of TII, the network interface and the correction engine are designed to meet the demand of NCAP system. The experiments results show that the system is stable and has real time capability.