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Somborac S.,Sensor Technology Ltd.
Hydro International | Year: 2010

Sensor Technology Ltd is a vertically integrated component manufacturer that produces piezoelectric ceramics and piezo-based acoustic transducers. Sensor Technology Ltd (SensorTech) is a privately owned Canadian corporation started by a husband and wife team in 1983. SensorTech is transitioning to its second generation of management and to a more nimble business structure. This change is reflective of its shift to a commercial focus. Sensor Technology Ltd exports about 80% of its production. As it is based in Canada, the company observes Canadian export regulations, which are significantly more lenient than the American regulations, like ITAR. Sensor Technology Ltd is focused on aggressive expansion. The company invested more than $1,000,000 in 2008/2009 to increase its piezoelectric powder production capacity. The recent addition of two CNC machines in 2010 is expected to more than double the company's machining capacity while adding new capabilities, including the ability to machine tubes and hemispheres up to 5in in diameter.


Kulkarni V.,University of Toronto | Ben Mrad R.,University of Toronto | El-Diraby T.,University of Toronto | Prasad E.,Sensor Technology Ltd.
Proceedings of the ASME Design Engineering Technical Conference | Year: 2010

Energy harvesting devices are growing in popularity for their ability to capture the ambient energy surrounding a system and convert it into usable electrical energy. With an increasing demand for portable electronics and an increased interest in the implementation of arrays of wireless sensors in a number of sectors such as health monitoring in civil infrastructure, MEMS sensor arrays for automotive and aerospace applications, and environmental control, there is a surge in research in the area of power harvesting. One such method of implementing a harvesting system is to use ambient vibration in conjunction with a piezoelectric device to generate electric energy based on the direct piezoelectric effect. This paper presents an overview of recent developments in piezoelectric based energy harvesters for microsystems and nanosystems applications along the various materials used for energy harvesting. The paper also tests two common energy harvester designs to observe their difference in operation. Copyright © 2010 by ASME.


Kulkarni V.,University of Toronto | Ben Mrad R.,University of Toronto | Prasad S.E.,University of Toronto | Nemana S.,Sensor Technology Ltd.
2012 8th International Symposium on Mechatronics and its Applications, ISMA 2012 | Year: 2012

Piezoceramics energy harvesters can transform ambient vibration energy into electrical signals and thus they are being explored for their potential to create self-powered devices for a variety of applications. However, currently available harvesters suffer from low-power outputs. This paper presents a concept of a shear mode piezoceramic energy harvester that utilizes favourable material properties to improve output power harvested from ambient mechanical vibrations. A model of this harvester is also presented to predict the power output and other characteristics of the harvester under various environments. © 2012 IEEE.


Kulkarni V.,University of Toronto | Ben-Mrad R.,University of Toronto | Prasad S.E.,University of Toronto | Nemana S.,Sensor Technology Ltd.
IEEE/ASME Transactions on Mechatronics | Year: 2014

The shear-mode of a piezoceramic material offers improved energy harvesting potential as compared to other modes. This paper presents a concept of using torsional stresses induced by nonrotational vibrations in an energy harvesting device to produce electrical power. A finite-element model of this concept is presented to illustrate the principle and a prototype is demonstrated to validate the design. This prototype harvester is found to be capable of producing a maximum power of 0.57 mW at its resonant frequency of 620 Hz with a base acceleration of 1 g in amplitude. When compared to conventional cantilever harvester designs, this torsion-based harvester is found to suffer from fewer electrical power losses and has a greater potential in producing high power outputs. © 1996-2012 IEEE.


Trademark
Sensor Technology Inc. | Date: 1975-11-18

PHOTOTRANSISTORS AND OPTO-PAIRED SWITCHING COMPONENTS FOR COMPUTER CARD TAPE READERS, POSITION INDICATORS, AND SHAFT ENCODERS; PHOTOTRANSISTOR ARRAYS AND TRANSDUCERS FOR CARD/TAPE READOUTS AND PHOTOSENSING CONTROL ASSEMBLIES; SILICON PHOTOVOLTAIC CELLS AND ARRAYS FOR SOLAR ENERGY CONVERSION, LIGHT ACTUATED DEVICES AND COLOR DISCRIMINATION.

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