Sun-tracking optical fiber light-guiding system and method

Abstract

The invention discloses a sun-tracking optical fiber light-guiding system and method. The system comprises a sensor unit, a controller unit, a driver unit, a mechanical unit and a sunlight convergingand conducting unit. The system senses the sunlight incident deflection angle through the sensor unit to convert a light intensity signal into a voltage signal which is input to the controller unit; the system tracks the sun precisely through the controller unit, the driver unit and the mechanical unit, so that a lighting lens of the sunlight converging unit faces the sun directly to receive and converge the incident sunlight in the maximum area, and the sunlight is conducted to optical fiber through a lens cone to achieve light guide by the optical fiber. When the sunlight incident angle is small in deviation, high light intensity beams received by the sensor unit deviate with large displacement through an optical lever, so that the sensitivity of the sensor is improved and fine tuning tracking is achieved; deflective correction of the converged rays is achieved through double lens of the sunlight converging unit, and spots of the converged rays fall in the optical fiber receiving endsurface all the way, so that the system can guide light continuously and efficiently.

Description

technical field [0001] The invention belongs to the field of sun tracking technology and solar energy application, and in particular relates to a sun tracking type optical fiber light guide system and a method for optical fiber to continuously receive and conduct sunlight. Background technique [0002] Solar energy is a kind of green energy. In order to efficiently apply and convert solar energy, most solar energy application devices (including but not limited to solar collectors, solar power generation devices, the same below) need to receive the maximum incident light intensity of sunlight in real time, so as to This ensures that the maximum light energy is received in real time, which requires the implementation of sun tracking and control for solar energy applications. [0003] The methods for implementing solar tracking and controlling the solar application device mainly include the sun trajectory calculation method, the GPS positioning method and the photoelectric indu...

AI Technical Summary

Problems solved by technology

The mechanical system of this type of sun tracking system also has deficiencies, such as low precision of mechanical adjustment or no locking function, etc., such as the patent "sunlight fiber optic lighting device and sun tracking method" (authorized announcement number: CN101482246B), which belongs to double freedom Degree adjustable mechanical system, the mechanical device is connected to the pitch plate through a two-arm U-shaped bracket, the stepping motor fixed on the right arm directly drives the pitching plate to rotate, and the pitching plate is driven by a large gear fixed on the stepping motor The pinion on the pitch plate is used to adjust the rotation of the pitch plate. This type of design has two disadvantages

First, the mechanical system drives the pinion gear of the pitch plate through the large gear fixed on the stepping motor. The external force is relatively large during the driving process, and the large gear drives the small gear. The small rotation angle increment of the large gear will be converted into a large rotation of the small gear. Angle increments lead to low mechanical precision of the tracking system; secondly, the mechanical system does not have the function of preventing external force reverse drive and state locking function. When the external wind acts on the pitch plate, the pinion gear connected to the pitch plate acts on the The large gear connected to the motor, when the wind force acting on the pitch plate reaches a certain level, the pitch plate becomes the power source to drive the large gear of the stepping motor through the long force arm of the small gear, thereby disturbing the working state of the tracking system

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