Design an aquaculture pH value wireless monitoring system

sensor node of system uses MSP430F149 as core

use nRF905 RF chip as wireless communication module

use PHG—96FS sensor to acquire pH value and datas of water temperature. Establish mathematical model for pH value measurement according to pH electrode measurement principle for curve fitting of temperature coefficient KpHmathematical model by piecewise quadratic polynomial fitting method. The node software is compiled using C Language in IAR Embedded Workbench

completes data acquisition and processing

wireless transmission

and serial communication. Monitoring software is compiled using VB 6. 0

which provide users with visual image of real-time data monitoring platform. Test results demonstrate that the system runs stably and data acquisition is normal

thus the system can meet requirements of aquaculture water quality monitoring.