Ensuring low power in wireless mesh sensor networks
Wireless sensor communications and low power go hand in hand. In fact, low power is just as important as the reliability of the communications itself. Before the advent of wireless sensor communications, low power was synonymous with low current consumption. The lower the milliamp figure, the better. To further reduce power consumption, the device was turned off when it did not need to communicate, and was awakened when an alarm situation was raised or a periodic status update was called for duty cycling.
Current consumption continues to be very important in wireless sensor networks. So not surprisingly, state-of-the-art wireless sensor communications components score well on power consumption and utilization of wake-up/sleep modes for duty cycling.
However, power consumption is only part of the solution. Several other factors must also be addressed in order to achieve low power in wireless sensor applications.
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