Solar automatic tracking circuit

Abstract

The invention relates to an automatic solar tracking circuit, belonging energy technique area, comprising photosensitive sensor, which provides location sensing signal for the whole circuit; power supply circuit, which provides regulated DC power supply for the whole circuit; signal conditioning circuit which selects-pass and enlarges sensing signal imported by photosensitive sensor; real-time clock circuit, which provides precise time scale for the whole circuit and inputting for math model built by single chip microprocessor; single main circuit, which is the core of the whole circuit, processes position and time signals input and sends control signal to driving circuit. Driving circuit drives motor to revise position. In the invention judgment precision is improved largely by judging position with time and senor inputting. The problem that precision of photosensitive sensing module is decreased because temperature changes, is solved by setting multilevel conditioning circuit in thewhole circuit.

Description

technical field [0001] The invention relates to a circuit in the field of energy technology, in particular to a sun automatic tracking circuit. Background technique [0002] As a clean and pollution-free energy source, solar energy has broad prospects for development. The development and utilization of solar lighting technology is of great significance, not only in terms of energy saving, but also healthy and green sunlight meets the requirements of human pursuit of quality of life and living environment. Since the collection of sunlight is greatly affected by time and climate, and the fluctuation range of light intensity is large, this puts forward higher requirements for the collection and utilization of solar energy. In order to use solar energy reasonably and efficiently, it is necessary to realize automatic tracking of the sun. [0003] After searching the literature of the existing technology, it is found that the patent application number is 99228399.X and the name i...

AI Technical Summary

Problems solved by technology

After analyzing this scheme, it is found that there are three main problems: firstly, the optical sensing module uses many optical fiber bundles, the module design is too complicated and unscientific, the cost is expensive, and the processing accuracy is also very high, so it is difficult to promote; secondly The reason is that the circuit only detects the position of the sun through photoelectric sensing. Once the light intensity is insufficient or the sensor is affected by the environment, the accuracy will be reduced, which may reduce the tracking accuracy or even fail to track. The reliability is not high in the actual process; The scheme uses a low-precision DC motor to drive, resulting in a large displacement error when driving the motor, and it is very difficult to achieve high precision

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