TY - GEN
T1 - Active control based energy harvesting for battery-less wireless traffic sensors
AU - Vijayaraghavan, K.
AU - Rajamani, R.
PY - 2007
Y1 - 2007
N2 - A novel battery-less wireless sensor is developed that can be embedded in the road and used to measure traffic flow rate, speed and vehicle weight. Compared to the ubiquitous inductive loop based traffic sensor, the new sensor is expected to provide increased reliability, easy installation and low maintenance costs. Energy to power this sensor is harvested from the short duration vibrations that results when an automobile passes over the sensor. Since all of the earlier work in literature on vibration energy harvesting has focused on continuous sources of vibration, this paper focuses on short duration vibrations and on developing low power control algorithms that can be implemented on the sensor using an analog circuit. To this effect this paper develops and compares three control algorithms "Fixed threshold switching", "Maximum Voltage switching" and "Switched Inductor" for maximizing this harvested energy. The "Switched inductor" algorithm is shown to be the most effective at maximizing harvested energy.
AB - A novel battery-less wireless sensor is developed that can be embedded in the road and used to measure traffic flow rate, speed and vehicle weight. Compared to the ubiquitous inductive loop based traffic sensor, the new sensor is expected to provide increased reliability, easy installation and low maintenance costs. Energy to power this sensor is harvested from the short duration vibrations that results when an automobile passes over the sensor. Since all of the earlier work in literature on vibration energy harvesting has focused on continuous sources of vibration, this paper focuses on short duration vibrations and on developing low power control algorithms that can be implemented on the sensor using an analog circuit. To this effect this paper develops and compares three control algorithms "Fixed threshold switching", "Maximum Voltage switching" and "Switched Inductor" for maximizing this harvested energy. The "Switched inductor" algorithm is shown to be the most effective at maximizing harvested energy.
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U2 - 10.1109/ACC.2007.4282842
DO - 10.1109/ACC.2007.4282842
M3 - Conference contribution
AN - SCOPUS:46449132708
SN - 1424409888
SN - 9781424409884
T3 - Proceedings of the American Control Conference
SP - 3106
EP - 3111
BT - Proceedings of the 2007 American Control Conference, ACC
T2 - 2007 American Control Conference, ACC
Y2 - 9 July 2007 through 13 July 2007
ER -