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Prototype energy harvesting wheel speed sensor for anti-lock braking

Dhasarathy Parthasarathy (Institutionen för mikroteknologi och nanovetenskap, Bionanosystem) ; Peter Enoksson (Institutionen för mikroteknologi och nanovetenskap, Bionanosystem) ; Rolf Johansson
MME 2012, Micromechanics and Microsystems Europe Workshop September 9 - 12, 2012, Ilmenau, Germany p. 115-120. (2012)
[Konferensbidrag, refereegranskat]

An energy harvesting wireless wheel speed sensor is presented, which implements two basic functions for anti-lock braking, namely periodic transmission of wheel speed information and near real-time detection of the start/stop of wheel rotation. The prototype sensor is powered by reusing a commercially available variable reluctance electromagnetic speed sensor as an energy harvesting transducer. In an experimental setup, a maximum harvestable power of ∼1 mW from the transducer (at a wheel rotational speed of ∼ 300 RPM) has been measured which has been used for powering the autonomous sensor. Each recurrent operation in the (prototype) autonomous sensor consumes a maximum of ∼23 mW of power in bursts for ∼3 ms, and a simple statistical model of wheel behavior has been proposed based on which the average power consumption of the sensor has been calculated

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Denna post skapades 2012-09-17. Senast ändrad 2013-02-25.
CPL Pubid: 163480


Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Bionanosystem (2007-2015)


Elektroteknik och elektronik

Chalmers infrastruktur