In wireless sensor networks（ WSNs）

the greater the node transmission power

the better the connectivity of network is. However

the energy consumption is more enormous. Therefore

predictive transmission power controller-based power management（ PTPC-PM） approach is proposed. The main objective of PTPC-PM is to dynamically adjust the transmission power level according to the wireless channel variations. Experiments are performed on real WSNs platform based on PowWow

which is based on a CC2420 RF transceiver

and mobile node attached to robot. The simulation results show that PTPC-PM algorithm can keep a high packet delivery ratio

and reduce energy consumption. When robot is moving at a speed of 0. 4 m/s

compared with fixed TX power policy

energy consumption of PTPC-PM algorithm is reduced 23. 6 %.