Development of a Vibration-Powered Wireless Temperature Sensor and Accelerometer for Health Monitoring

George, Sherin

doi:10.1109/aero.2006.1656118

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…From the literature, integrated vibration powered wireless sensor systems have been demonstrated with both miniature electromagnetic VEH [11] and MEMS piezoelectric VEH [12]. Additionally, certain sensing systems such as temperature sensors and acceleration sensors have been incorporated into such VEH-enabled wireless systems [13].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Vibration Powered Microelectromechanical Strain Gauge

Jia

Zou

et al. 2016

IEEE Sensors J.

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This paper reports the demonstration of an ultra-low power MEMS-CMOS oscillator for strain sensing, powered by a miniature piezoelectric vibration energy harvester (VEH). The employment of the Pierce oscillator topology in a MEMS-CMOS oscillator allows for minimisation of the power requirement to as low as 1.1 µW under ideal conditions. A VEH prototype, developed with hard PZT on a stainless steel substrate (∼0.4 cm 3 practical operational volume), is able to deliver a typical average power of 187 µW at 11.4 ms −2 and 514 Hz. Some of the practical challenges associated with the integration of the harvester and the MEMS sensor have also been explored, which helps to lay the foundation for realising net-zero-power strain sensors.

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Section: Introductionmentioning

confidence: 99%

A Hybrid Vibration Powered Microelectromechanical Strain Gauge

Jia

Zou

et al. 2016

IEEE Sensors J.

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Flexible integration of alternative energy sources for autonomous sensing

Weddell

Grabham

Harris

et al. 2008

2008 2nd Electronics Systemintegration Technology Conference

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Recent developments in energy harvesting and autonomous sensing mean that it is now possible to power sensors solely from energy harvested from the environment. Clearly this is dependent on sufficient environmental energy being present. The range of feasible environments for operation can be extended by combining multiple energy sources on a sensor node. The effective monitoring of their energy resources is also important to deliver sustained and effective operation. This paper outlines the issues concerned with combining and managing multiple energy sources on sensor nodes. This problem is approached from both a hardware and embedded software viewpoint. A complete system is described in which energy is harvested from both light and vibration, stored in a common energy store, and interrogated and managed by the node. IntroductionWireless autonomous sensors are devices with sensing, processing and wireless communication capabilities. In order to deliver truly autonomous operation, sensor nodes must not depend on an external power source. Conventionally, wireless sensing devices are powered by non-rechargeable batteries which must be replaced when depleted (imposing a maintenance requirement that can prove costly during long deployments), or must support the operation of the node for its complete lifetime.For sustained operation, it follows that nodes should not be reliant on non-rechargeable batteries, but instead generate their own energy in-situ. Energy harvesting is a developing technology area, and prominent technologies facilitate the generation of electricity from light (photovoltaics), vibration (vibration energy harvesting), or thermal gradients (thermoelectrics). The intermittent nature of many environmental energy sources means that viable devices must harvest energy from their operating environment when possible, and buffer excess energy in supercapacitors [1].In general, harvested energy is scarce and often unpredictable. The range of feasible environments for operation can be extended by combining multiple energy harvesting sources on one node, and managing energy resources carefully. In this paper we present, as an example, a system incorporating photovoltaic and vibration energy harvesting. Algorithms to manage these energy resources are introduced, and the embedded software is developed in line with a defined hardwaresoftware architecture [2].

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Development of a Vibration-Powered Wireless Temperature Sensor and Accelerometer for Health Monitoring

Cited by 2 publications

References 3 publications

A Hybrid Vibration Powered Microelectromechanical Strain Gauge

A Hybrid Vibration Powered Microelectromechanical Strain Gauge

Flexible integration of alternative energy sources for autonomous sensing

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