Development of a MEMS based proximity voltage sensor with no voltage reference

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This project will is focused on the development of a MEMS based voltage sensor for the electric distribution grid, which will be implemented in the SmartBee micro-sensor network developed by SiliconPro Inc.. The SmartBee network is formed from sensors that are clamped around the conductor and continuously measure the voltage and current, and will communicate these measurements to a server via wireless connection. The initial application of the sensor will be in high voltage electric lines. Each sensor node is to be powered from an energy harvester that is harvesting the energy from the magnetic field generated by the current flowing in the conductor. The need for high precision, low cost, energy efficient and compact voltage sensor are the main drivers for implementing the voltage sensor in MEMS technology. Two main efforts will be undertaken. First, to develop a voltage sensor in MEMS technology that can be integrated in SiliconPro's SmartBee micro-sensor system. Second, to investigate optimum placement of the sensor system for high measurement accuracy. The MEMS voltage sensors to be developed will be unique designs that offer potential for grid infrastructure monitoring, and sensors for worker safety in live line situations. Their small size and lower power requirements, offer opportunities in many other industries requiring voltage or electric charge monitoring.