Abstract

Aiming at the real time monitoring requirement of alkali solution concentration in cotton goods mercerizing, a ZigBee-based monitoring system is proposed for alkali solution concentration. its application of electrochemical theory, ZigBee wireless networks and sensor technology. supply a network structure of monitoring system. monitoring system node controller of data acquisition, data transmission and control node, which is TI's CC2430 based on ZigBee technology. sensors of alkali solution concentration use electrochemical, designed circuit diagram of sensor node and system master control node, CC2430 as a data processing chip. through the analysis of data transmission of system, simplifying the ZigBee protocol stack, designed data transmission protocols and communication formats of the system. given program flow chart of sensors nodes and main node. Finally the operational results demonstrate: System performance parameters are better than the wired monitoring system, especially in real-time systems and anti-jamming, it so superior on the current forms of alkali solution cable system, which cost lower than the cable system about 30%, measurement accuracy of Alkali concentration less than 0.6%.

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