This movement causes a change in the magnetic flux passing through the coil windings L. Thus, according to Haraday’s law of electromagnetic induction, an alternating voltage is induced on the individual coil windings depending on the speed of the excited oscillating motion of the magnetic excitation circuit. 4. The excitation circuit 8 consists of 4 permanent magnets 83, 84, 85 and 86 disposed on the inner pole piece 8 and the outer pole piece 82. magnetically in the same direction, thus creating a sufficiently large magnetic induction in the air gap between them at the location of the coil winding 7. The magnetic flux sc closes over the inner pole piece 81 and the outer pole piece 82. These extensions have a shape corresponding to the radius of movement of the movable member 2. the coil 7 has the shape of a rectangular, self-supporting coil without a core. The total power generated depends on the ratio of these damping and is maximal if the instantaneous value of the electromagnetic damping given by the design of the excitation circuit, the coil and the loads is equal to the instantaneous value of the mechanical damping depending on the design of the resonant mechanism and the magnitude of the excited movement.
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The design of the coil 7 is designed according to the required magnitude of the induced voltage (wire length), the dimensional constraints of the vibration generator, the magnitude of the excited oscillating movement of the movable member 2 with the excitation circuit 8, but also the magnitude of the connected resistive load. The following physical principles are generally used to convert the kinetic energy of vibration to electrical energy; piezoelectric effect, electrostatic transformations and electromagnetic induction. SUMMARY OF THE INVENTION The object of the invention is to provide an electromagnetic vibration generator solution utilizing a low vibration frequency (typically up to 50 Hz, exceptionally up to 100 Hz) for producing electricity based on the Faraday law of electromagnetic induction. For low resonant frequencies, relatively soft host characteristics of the resilient member are needed. 1 consists of an oscillating movable body of mass ni suspended from a resilient member of stiffness k.
Tipos De Dolor Pdf
Electromagnetic vibration generator for extracting electrical energy from mechanical vibrations, kinetic energy of oscillating motion in general, up to 50 Hz (in extreme cases up to 100 Hz) can be used to extract electrical energy from mechanical vibration (oscillating motion in general) and supply autonomous equipment and wireless sensors without the need for external power, or without using a primary or secondary cell or battery. These design variants have limitations on the stiffness of the resilient member and hence the resonant frequency of the generator. The shape, size and method of fixing all magnets is based on the required stiffness characteristics, maximum excited oscillations of the movable member 2, and the entire structure of the repulsive fixed and movable magnets 4, 3, 4 is adapted to the overall design of the vibration generator. SUMMARY OF THE INVENTION The object of the present invention is to provide an electromagnetic vibration generator utilizing a low dominant vibration frequency of up to 50 Hz (depending on size or up to 100 Hz) for power generation, using a set of fixed and movable permanent magnets 4, 3, 4 The working frequency of the vibration generator is given by the ratio of the generated magnetic stiffness to the mass (moment of inertia) of the entire movable member, so the technical solution of this electromagnetic vibration generator is suitable for low ambient vibrations with frequency up to 50 – 100 Hz, thanks to the soft stiffness characteristic created by a set of repulsive fixed and movable permanent magnets 4, 3. 4. In combination with the mass (or moment of inertia) of the entire moving member of the vibration generator, the required resonant (natural) frequency of the vibration generator, which coincides with the frequency of the excitation vibrations.
In order to achieve the minimum mechanical damping forces mentioned above, it is advantageous if the hinge and bushing have the following construction: The hinge is a cylindrical pin rolled in a cylindrical bush, the hinge is a cylindrical pin rolled in a cone bush, a hinge the hinge is in the form of a groove, and the hinge is in the form of a groove. Thus, obtaining electrical energy from vibrations by means of an electromagnetic vibration generator is advantageous for low excitation vibration frequencies where the amplitude of the oscillating motion of the vibration is sufficient.
For these reasons, the use of a magnetic resilient member with mechanical guidance seems to be most advantageous for vibration frequencies up to about 50-100 Hz. When using traditional materials, the use of these design variants for low frequencies is completely inappropriate. Quitar dolor muscular piernas . 4 (i) considering the predicted dimensions and parameters of the resonant mechanism and the design of the structure to adapt to the predicted amplitude of the excited oscillating motion, which will provide the resonant mechanism under load due to the vibration and at the desired power demand from the system. In connection with the development of electronics and the reduction of its energy consumption, the use of some sources of ambient energy for powering wireless sensors and nested applications is increasingly important. Already today, some sources of electrical energy using energy from the environment (solar cells, temperature difference, fluid flow, kinetic energy, etc.) are used. Due to this design, the excitation circuit 8 does not impinge on the frame 1 and / or the coil 7, this impact would be destructive in nature to the function of the vibration generator, with a brief increase in vibration amplitude, which is very common in real technical systems.
The rotary bearing of the movable member in the bearings is not suitable in terms of friction and hence low sensitivity to excitation vibrations of the thus generated vibration generator. In practice, this mounting of the movable member 2 can be accomplished in several ways of arranging the hinge 6 in the housing 5: Cylindrical pin 61 rolled in the cylindrical sleeve 5E The cylindrical pin 6 rolled in the tapered sleeve 52. The tip (s) 64 housed in the housing 5 with the pit and / or the housing with the groove 5. Dolor en la parte posterior de la rodilla . The sensitivity of the vibration generator then depends on the materials used and the geometry of the housing parts 5 and the cylindrical pin 6. 7 and the excitation circuit 8 are designed specifically to meet these requirements, each input parameter corresponds to a different suitable design of the coil 7 and the excitation circuit 8, and at the same time aligned with the resonant mechanism parameters of the vibration generator.
The essence of generating electrical energy is to move the excitation circuit 8 relative to the coil 7. The oscillating movement of the movable member 2 with the excitation circuit 8 is caused by the excitation vibrations of a given frequency to which the generator is tuned. Generally, the electromagnetic vibration generator consists of the following parts: a resonant mechanism which consists of a resilient member and a moving mass and tuned to the excitation frequency of the excitation (provides relative movement of the excitation circuit over the coil), and the excitation circuit (permanent magnet / FeNdB magnets). On each side of the movable permanent magnet 3 located on the movable member 2, a fixed permanent magnet 4 is arranged in the frame. One of the possibilities is utilization of kinetic energy of surrounding vibrations.
Another potential possibility of converting kinetic energy to electrical energy is the use of magnetostrictive materials. In the excitation of vibrations, the movable member 2 with the magnetic excitation circuit 8 moves relative to the fixed coil 7 fixed to the generator frame. The movable permanent magnet (s) 3 is fixed to the movable member of the generator 2 and is repelled by magnetic forces from the fixed permanent magnet 4 fixed in the frame 1 of the generator.
In order to ensure point or linear contact of the housing with the hinge, it is preferable that the resilient member, which is formed by fixed permanent magnets fixed in the frame and one or more movable permanent magnets, position the fixed and movable permanent magnets relative to each other. The oscillating body is positioned between a set of repulsive permanent magnets that create the stiffness of the mechanism. 2o It is obvious that the whole design of the electromagnetic vibration generator must be tuned so that the excited vibration generates the maximum possible power. It is understood that the descriptions below are illustrative of the application of the principles of the invention. The energy from the mechanical vibration of the system is obtained by a vibration generator whose structure is tuned to the excitation vibration and is optimally designed with respect to the required generated power and other requirements for this device.