مرور كاربردها و روش هاي كاهش توان در شبكه هاي حسگر بيسيم و پردازش سيگنال آن

Review of Applications and Power Reduction Techniques in Wireless Sensor Network and Its Signal Processing

ﻃﺮاﺣﯽ ﯾﮏ ﮔﺮه ﺑﯿﺴﯿﻢ ﺑﺎ ﺗﻮان ﻣﺼﺮﻓﯽ ﭘﺎﯾﯿﻦ از اﻫﻤﯿﺖ وﯾﮋه اي ﺑﺮﺧﻮردار اﺳﺖ از آن ﺟﻬﺖ ﮐﻪ ﺗﻮان ﻣﺼﺮﻓﯽ ﺷﺒﮑﻪ ﺑﻪ ﺗﻮان ﮔﺮ ﺑﻪ ﻋﻨﻮان ﻋﻀﻮ اﺻﻠﯽ ﺗﺸﮑﯿﻞ دﻫﻨﺪه ﺷﺒﮑﻪ واﺑﺴﺘﻪ اﺳﺖ. دراﯾﻦ ﭘﮋوﻫﺶ ﺿﻤﻦ ﺑﺮرﺳﯽ اﻫﻤﯿﺖ ﻃﺮاﺣﯽ ﮔﺮه ﻣﺒﺘﻨﯽ ﺑﺮ ﺗﻮان ﻣﺼﺮﻓﯽ ﭘﺎﯾﯿﻦ ﺑﻪ ﻣﻌﺮﻓﯽ روش ﻃﺮاﺣﯽ ﯾﮏ ﻓﯿﻠﺘﺮ ﺗﻮان ﭘﺎﯾﯿﻦ در ﺳﺎﺧﺘﺎر ﮔﺮه ﭘﺮداﺧﺘﻪ ﺷﺪه اﺳﺖ. ﻣﺰﯾﺖ اﯾﻦ روش اﯾﻦ اﺳﺖ ﮐﻪ ﺑﺎ ﮐﺎﻫﺶ ﺗﻌﺪاد ﺿﺮب ﮐﻨﻨﺪه ﻫﺎ در ﻣﺮﺣﻠﻪ ﻧﻤﺎﯾﺶ ﺳﺎﺧﺘﺎر و اﺳﺘﻔﺎده از ﺧﺎﺻﯿﺖ ﺗﻘﺎرن ﺿﺮاﯾﺐ ﻓﯿﻠﺘﺮي ﻣﯽ ﺗﻮان ﻓﯿﻠﺘﺮي ﻃﺮاﺣﯽ ﻧﻤﻮد ﮐ ﺗﻌﺪاد ﺿﺮب ﮐﻨﻨﺪه ﻫﺎي آن ﻧﺴﺒﺖ ﺑﻪ روش ﻣﺘﺪاول ﭼﻨﺪ ﻓﺎزه ﺑﻪ ﻧﺼﻒ ﮐﺎﻫﺶ ﯾﺎﺑﺪ.

Design of a low power sensor node for wireless sensor network is important, since the power dissipation of the system is dependent on that. In this research, design of a low power sensor node has been investigated and a method for design of a low power digital filter for wireless sensor node has been introduced. In this method, number of multipliers has been reduced in the architecture and using symmetrical coefficients number of multipliers has been halved compared to poly-phase design method.