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Sunlight is a prefer source to generate energy by using PV cell especially in equatorial country. The heat released from the sun is one kind of energy, which is heat energy. Usually, the heat energy released from sun is not fully utilized. However, this energy can be reused by using thermoelectric generator (TEG) also. TEG transfer heat energy into electricity, prevent heat energy from being wasted...
In this paper, a Thermal Energy Harvesting (TEH) technique with power management circuit to condition the output power harvested from low-level heat energy sources with the intention to extend the lifetime of the wireless sensor network (WSN) node is presented. By using this approach, it can extends the WSN nodes lifespan from few days or even weeks (in a case of batteries powered) up to years or...
Thermoelectric generator (TEG) converts heat energy into electrical energy when there is a temperature gradient between top and bottom surface of the device. Generally, large electronic system or electronic display generates heat which dissipate via the surface of the device which may affect the functionality and lifetime of the systems or devices. Therefore, TEG can be used to utilize the heat and...
Thermoelectric generator (TEG) is a generator which converts heat energy into electrical energy. Electrical energy needs to be stored before used for power up any electronic device. In order for storing enough of energy, charge pump is needed to step up DC to DC voltage. However the voltage at the storage capacitor saturate at the voltage level which is similar to the voltage that generated by the...
Piezoelectric cantilever as a resonant structure can be used both as sensor as well as energy harvester and hence can be integrated as a self-powered system. When excited at a frequency near to its resonant, maximum electrical power is generated, therefore it functions as a micro-power generator. When excited to a frequency which is far from the range of the resonant, the voltage signal generated...
This paper evaluates a micro generator based on a piezoelectric transducer bending mechanism where impact force is being exerted onto the bending beam and hence generating electrical power across an external resistive load. The proposed bending mechanism prototype has been manufactured by using 3D printer in order to conduct the evaluation. A free fall test has been conducted as the evaluation method...
Conversion of mechanical vibration into electrical energy with simple structure highlights the potential of piezoelectric energy harvester as a candidate to replace conventional batteries in wireless sensor network. Piezoelectric energy harvester enables standalone 'wireless sensor' which is cheap to deploy in wireless sensor network. Therefore, this paper emphasizes on the design and simulation of...
This paper aimed to analyze the effect of electrode spacing and number of electrode fingers of interdigitated electrode (IDE) design for impedance based lard characterization. Two types of interdigitated electrode (IDE) sensor was designed with two different spacing and each type have five different numbers of fingers. Impedance measurement is taken by using precision LCR meter 4285A where the frequency...
In the manufacturing process, metal capping for EMI shielding is done during the integrated circuit (IC) assembly process, which hinders the attempt of reducing the size of electronic device and also incurs higher cost of assembly. Therefore direct deposition of metal on IC mold compound is desirable. Conventional metal plating techniques, however fail tape test. This paper studies the condition of...
Conventional vibration energy harvesters are required to function only on sole resonant frequency and to harvest energy on a restricted bandwidth. In this paper, a novel mathematical model of a energy harvester is proposed to confront the problem and to harvest energy in a broader spectrum of frequency. Simulation results show that the proposed model is able to generate broadband energy with suitable...
In this paper, a performance energy harvester generator with different configuration is determined by observing the output power and voltage charging of each configuration. The configuration consists of 4 structures. The first structure consists of a single piezoelectric cantilever. The second structure consists of copper coil with approximately 1000 turns and four magnets are configured in opposite...
Piezoelectric energy harvester extracts energy based on its load. In order to get optimum energy transfer, the optimum load must be connected directly to the piezoelectric. However, it is difficult to get optimum energy transfer from piezeoelctric to the load. The promising solution is by designing the interface circuit with optimum impedance. This paper discusses the performance of various type of...
This paper demonstrates the operation of a self-power vibration measurement system. A piezoelectric material in the form of a cantilever is being used as a generator which harvest energy from ambient vibration source and transform into useful electrical output. The vibration sources is measured with a MEMS based accelerometer, which is powered up by the transformation of electrical energy derived...
Due to the fact that the ambient vibration sources are random and unpredictable, the design of energy harvesters responding to multi-frequency is desirable. In this paper, an array lead zirconate titanate (PZT) thick-film cantilevers were designed and fabricated to demonstrate the possibility of harvesting vibration energy from different frequencies. Two configurations of multi-cantilever were fabricated...
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