Abstract:
A SINGLE DIE SOLUTION OF AN INTEGRATED SENSOR SYSTEM (10) FOR READING SOIL MOISTURE IS DESCRIBED. THE INTEGRATED SENSOR SYSTEM (10) FOR A FRINGING ELECTRIC FIELD SENSOR (12) COMPRISES A READOUT INTERFACE CIRCUIT (14), AND AN ANALOG TO DIGITAL CONVERTER (16). THE SENSOR (12) MEASURES MOISTURE AND CREATES AN ANALOG ELECTRICAL SIGNAL WHICH MATCHES THE MOISTURE LEVEL. THE READOUT INTERFACE CIRCUIT (14) AMPLIFIES THE ANALOG SIGNAL, AND THE ANALOG TO DIGITAL CONVERTER CONVERTS THE ANALOG SIGNAL INTO DIGITAL SIGNAL. THE OUTPUT OF THE INTEGRATED SENSOR PROVIDES A DIGITAL OUTPUT OF MOISTURE READINGS. FIG. 1
Abstract:
AN ENERGY HARVESTING DEVICE (100) COMPRISES A HOLLOW PRISMATIC BODY (I12) FORMED OF A PLURALITY OF FACES ARE COATED WITH A PIEZOELECTRIC LAYER THEREON, A PLURALITY OF ELONGATED CANTILEVERS (14) ARE ARRANGED SPATIALLY FROM EACH OTHER AND INSERTED THROUGH THE FACES OF THE HOLLOW PRISMATIC BODY (12), THE ELONGATED CANTILEVERS (14) ARE COATED WITH A PIEZOELECTRIC LAYER THEREON, AND AT LEAST ONE INNER RESILIENT MEANS (16) OF A PARTICULAR STIFFNESS HAVING ONE END ATTACHED THE HOLLOW PRISMATIC BODY (12) AFTER DETERMINED THE CENTRE OF GRAVITY AND MASS OF THE HOLLOW PRISMATIC BODY (12) AND THE OTHER END ATTACHED TO A BASE (18) IN ORDER TO BE STABLE ON ITS AXIS, WHEREIN THE DEVICE (100) IS CAPABLE OF DETECTING SMALL AMOUNT OF ENVIRONMENTALLY AVAILABLE VIBRATION SOURCES AND PRODUCING HUGE VIBRATION TO THE HOLLOW PRISMATIC BODY (12) AND THE CANTILEVERS (14), THEREBY INDUCING THE DEVICE (100) TO GENERATE ELECTRICAL ENERGY. THE ENERGY HARVESTING DEVICE (100) IS CAPABLE OF HARVESTING ENERGY FROM AMBIENT LOW SCALE VIBRATION. THEREFORE IT IS APPLICABLE TO ANY KIND OF ENERGY HARVESTING WHERE MECHANICAL FORCE IN NEED TO CONVERTED TO ELECTRICAL ENERGY.
Abstract:
An energy harvesting device (100) comprises a hollow prismatic body (12) formed of a plurality of faces are coated with a piezoelectric layer thereon, a plurality of elongated cantilevers (14) are arranged spatially from each other and inserted through the faces of the hollow prismatic body (12), the elongated cantilevers (14) are coated with a piezoelectric layer thereon, and at least one inner resilient means (16) of a particular stiffness having one end attached the hollow prismatic body (12) after determined the centre of gravity and mass of the hollow prismatic body (12) and the other end attached to a base (18) in order to be stable on its axis, wherein the device (100) is capable of detecting small amount of environmentally available vibration sources and producing huge vibration to the hollow prismatic body (12) and the cantilevers (14), thereby inducing the device (100) to generate electrical energy. The energy harvesting device (100) is capable of harvesting energy from ambient low scale vibration. Therefore it is applicable to any kind of energy harvesting where mechanical force in need to converted to electrical energy.
Abstract:
An energy harvesting device (100) comprises a hollow prismatic body (12) formed of a plurality of faces are coated with a piezoelectric layer thereon, a plurality of elongated cantilevers (14) are arranged spatially from each other and inserted through the faces of the hollow prismatic body (12), the elongated cantilevers (14) are coated with a piezoelectric layer thereon, and at least one inner resilient means (16) of a particular stiffness having one end attached the hollow prismatic body (12) after determined the centre of gravity and mass of the hollow prismatic body (12) and the other end attached to a base (18) in order to be stable on its axis, wherein the device (100) is capable of detecting small amount of environmentally available vibration sources and producing huge vibration to the hollow prismatic body (12) and the cantilevers (14), thereby inducing the device (100) to generate electrical energy. The energy harvesting device (100) is capable of harvesting energy from ambient low scale vibration. Therefore it is applicable to any kind of energy harvesting where mechanical force in need to converted to electrical energy.