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An ultra-low power wireless sensor network for bicycle torque performance measurements.

Gharghan SK, Nordin R, Ismail M - Sensors (Basel) (2015)

Bottom Line: The current consumption of ANT was measured, simulated and compared with a torque sensor node that uses the XBee S2 protocol.The sensor node achieved 98% power savings for ANT relative to ZigBee when they were compared alone, and the power savings amounted to 30% when all components of the sensor node are considered.The conclusions indicate that the ANT protocol is more suitable for use in a torque sensor node when power consumption is a crucial demand, whereas the ZigBee protocol is more convenient in ensuring data communication between cyclist and coach.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia. sadiq@siswa.ukm.edu.my.

ABSTRACT
In this paper, we propose an energy-efficient transmission technique known as the sleep/wake algorithm for a bicycle torque sensor node. This paper aims to highlight the trade-off between energy efficiency and the communication range between the cyclist and coach. Two experiments were conducted. The first experiment utilised the Zigbee protocol (XBee S2), and the second experiment used the Advanced and Adaptive Network Technology (ANT) protocol based on the Nordic nRF24L01 radio transceiver chip. The current consumption of ANT was measured, simulated and compared with a torque sensor node that uses the XBee S2 protocol. In addition, an analytical model was derived to correlate the sensor node average current consumption with a crank arm cadence. The sensor node achieved 98% power savings for ANT relative to ZigBee when they were compared alone, and the power savings amounted to 30% when all components of the sensor node are considered. The achievable communication range was 65 and 50 m for ZigBee and ANT, respectively, during measurement on an outdoor cycling track (i.e., velodrome). The conclusions indicate that the ANT protocol is more suitable for use in a torque sensor node when power consumption is a crucial demand, whereas the ZigBee protocol is more convenient in ensuring data communication between cyclist and coach.

No MeSH data available.


Related in: MedlinePlus

Current consumption comparison between ANT and XBee S2 modules with and without applying sleep/wake algorithm.
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sensors-15-11741-f017: Current consumption comparison between ANT and XBee S2 modules with and without applying sleep/wake algorithm.

Mentions: The current consumption of ANT can be compared with XBee S2 with and without applying the sleep/wake algorithm. Once the sleep/wake algorithm is applied; the current consumption is dramatically reduced, as shown in Figure 17. This figure shows that the current consumption of both wireless technologies ANT and XBee S2 when applying the sleep/wake algorithm is better than without using this algorithm. The average power savings of using XBee S2 based on a sleep/wake algorithm are 94.97% relative to XBee S2 without applying the sleep/wake algorithm. However, the average power savings of using ANT based on a sleep/wake algorithm is 99.87% relative to ANT without using the sleep/wake algorithm.


An ultra-low power wireless sensor network for bicycle torque performance measurements.

Gharghan SK, Nordin R, Ismail M - Sensors (Basel) (2015)

Current consumption comparison between ANT and XBee S2 modules with and without applying sleep/wake algorithm.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4481893&req=5

sensors-15-11741-f017: Current consumption comparison between ANT and XBee S2 modules with and without applying sleep/wake algorithm.
Mentions: The current consumption of ANT can be compared with XBee S2 with and without applying the sleep/wake algorithm. Once the sleep/wake algorithm is applied; the current consumption is dramatically reduced, as shown in Figure 17. This figure shows that the current consumption of both wireless technologies ANT and XBee S2 when applying the sleep/wake algorithm is better than without using this algorithm. The average power savings of using XBee S2 based on a sleep/wake algorithm are 94.97% relative to XBee S2 without applying the sleep/wake algorithm. However, the average power savings of using ANT based on a sleep/wake algorithm is 99.87% relative to ANT without using the sleep/wake algorithm.

Bottom Line: The current consumption of ANT was measured, simulated and compared with a torque sensor node that uses the XBee S2 protocol.The sensor node achieved 98% power savings for ANT relative to ZigBee when they were compared alone, and the power savings amounted to 30% when all components of the sensor node are considered.The conclusions indicate that the ANT protocol is more suitable for use in a torque sensor node when power consumption is a crucial demand, whereas the ZigBee protocol is more convenient in ensuring data communication between cyclist and coach.

View Article: PubMed Central - PubMed

Affiliation: Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia. sadiq@siswa.ukm.edu.my.

ABSTRACT
In this paper, we propose an energy-efficient transmission technique known as the sleep/wake algorithm for a bicycle torque sensor node. This paper aims to highlight the trade-off between energy efficiency and the communication range between the cyclist and coach. Two experiments were conducted. The first experiment utilised the Zigbee protocol (XBee S2), and the second experiment used the Advanced and Adaptive Network Technology (ANT) protocol based on the Nordic nRF24L01 radio transceiver chip. The current consumption of ANT was measured, simulated and compared with a torque sensor node that uses the XBee S2 protocol. In addition, an analytical model was derived to correlate the sensor node average current consumption with a crank arm cadence. The sensor node achieved 98% power savings for ANT relative to ZigBee when they were compared alone, and the power savings amounted to 30% when all components of the sensor node are considered. The achievable communication range was 65 and 50 m for ZigBee and ANT, respectively, during measurement on an outdoor cycling track (i.e., velodrome). The conclusions indicate that the ANT protocol is more suitable for use in a torque sensor node when power consumption is a crucial demand, whereas the ZigBee protocol is more convenient in ensuring data communication between cyclist and coach.

No MeSH data available.


Related in: MedlinePlus