An X - ydose - rate digital monitor instrument based on ZigBee platform has been described. It can be used to monitor the nuclear radiation in certain regions and realize the data measurement and the information wireless transmission and procession by building a wireless LAN. The parameters of each probe can be set by the monitor instrument system, ad hoc network can be flexibly established to transmit information among these probes and the reliability of data and information transmission be enhanced. The X -ydose - rate digital moni- tor system, which the ultra low power microcontroller MSP43...