Voltage sensor and voltage measurement method by adopting the same
A voltage sensor, a technology for measuring voltage, applied in the field of sensors, can solve the problems of poor temperature stability and environmental stability, high cost, and extremely high requirements for polarization stability of light sources and optical path systems, and achieves low cost, strong adaptability, and stability. high effect
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Embodiment 1
[0023] Such as figure 2 As shown, the voltage sensor of the present invention includes a monochromatic non-polarized light source 1, a first converging lens 2, an electro-optic sensor 3, a polarizer 4, a second converging lens 5, an aperture 6 and a photodetector 7, and a monochromatic non-polarized light source 1 The first converging lens 2 is connected by a multimode optical fiber, the first converging lens 2 is fixed on one side of the electro-optic sensor 3 by glue bonding, the other side of the electro-optic sensor 3 and one side of the polarizer 4 are fixed by glue bonding, and the polarizer The other side of the 4 is bonded and fixed with quartz glass 8, the other side of the quartz glass 8 is bonded and fixed with the diaphragm 6, and the other side of the diaphragm 6 is fixed with one side of the second converging lens 5 by glue bonding. The other sides of the two converging lenses 5 are connected to the photodetector 7 through another multimode optical fiber.
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Embodiment 2
[0026] The difference between this embodiment and Embodiment 1 is that the positions of the diaphragm 6 and the second converging lens 5 are exchanged, the other side of the polarizer 4 is bonded and fixed with quartz glass 8, and the other side of the quartz glass 8 is bonded and fixed with the second Two converging lenses 5, the other side of the second converging lens 5 is glued and fixed to one side of the diaphragm 6, and the other side of the diaphragm 6 is connected to the photodetector 7 through an optical fiber.
[0027] The present invention adopts the method for measuring voltage of above-mentioned voltage sensor, comprises the following steps:
[0028] (1) load the voltage to be measured on the electro-optic sensor 3,
[0029] (2) if figure 1 As shown, the beam emitted by the monochromatic non-polarized light source 1 passes through the first converging lens 2 to form a converging beam with a convergence angle of 30°-70° and enters the electro-optic sensor 3, and ...
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Abstract
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