JAFO Atypical 1.5 V battery has a capacity of 28 mAh. Assume that this battery is used to operate a ZigBee node. Answer the following questions: 1. How much (in watts) can the node consume if it operates continuously for 3 years? 2. If the node can turn off its transceiver, it will be able to reduce power consumption by 80%. If the node can use sleep modes to keep the transceiver on only 10% of the time, how much longer will the battery life become. 3. Given 0.5 mW RF transceiver for a ZigBee device. Assume this same power is used when transmitting and receiving. For the device's battery to last 3 years, what percentage of time the transceiver should be on? Ignore the power consumed by the rest of the nodes.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Atypical 1.5 V battery has a capacity of 28 mAh. Assume that this battery is used
to operate a ZigBee node. Answer the following questions:
1. How much (in watts) can the node consume if it operates continuously for 3 years?
2. If the node can turn off its transceiver, it will be able to reduce power consumption by
80%. If the node can use sleep modes to keep the transceiver on only 10% of the time,
how much longer will the battery life become.
3. Given 0.5 mW RF transceiver for a ZigBee device. Assume this same power is used
when transmitting and receiving. For the device's battery to last 3 years, what percentage
of time the transceiver should be on? Ignore the power consumed by the rest of the nodes.
Transcribed Image Text:[AT Atypical 1.5 V battery has a capacity of 28 mAh. Assume that this battery is used to operate a ZigBee node. Answer the following questions: 1. How much (in watts) can the node consume if it operates continuously for 3 years? 2. If the node can turn off its transceiver, it will be able to reduce power consumption by 80%. If the node can use sleep modes to keep the transceiver on only 10% of the time, how much longer will the battery life become. 3. Given 0.5 mW RF transceiver for a ZigBee device. Assume this same power is used when transmitting and receiving. For the device's battery to last 3 years, what percentage of time the transceiver should be on? Ignore the power consumed by the rest of the nodes.
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