Photoelectric signal acquisition circuit

Abstract

The invention discloses a photoelectric signal acquisition circuit, which has the characteristic of simplicity, meets the requirement of accuracy and has the data acquisition accuracy level of 0.5 percent. The photoelectric signal acquisition circuit mainly comprises a photoelectric signal acquisition component, an integrated operational amplifier and a reference voltage source circuit. A voltage signal of OV (Output Voltage) is a voltage signal subjected to voltage boost; and OV1 is acquired voltage which is output after LM358 tracking and is also a voltage value which is directly acquired by a singlechip analog circuit A / D (Analog / Digital). A ten-bit accuracy A / D acquisition circuit built in DSPIC30F3010 can extremely conveniently realize signal acquisition in various forms through an internal register. V1 is a feedback value of analog output alternating voltage, V2 is a direct current voltage source of +5V and V3 is a direct current voltage source of +12V; LM358 is a simple integrated operational amplifier; and 78L05 is a reference voltage source circuit.

Description

Technical field: [0001] The invention relates to solar energy utilization technology, in particular to the field of signal processing in solar tracking systems. Background technique: [0002] When non-renewable energy sources such as electricity, coal, and oil are running out frequently, and energy issues have increasingly become a bottleneck restricting the development of the international society and economy, more and more countries have begun to implement the "Sunshine Plan" to develop solar energy resources and seek new impetus for economic development. As a renewable new energy source, solar energy has attracted more and more attention. Photovoltaic power generation is a way of utilizing solar energy, and it has been widely valued because of its energy-saving and environmental protection effects. [0003] At present, various types of solar tracker devices, from simple to complex, are mainly divided into two categories, namely, mechanical systems and electronic control ...

AI Technical Summary

Problems solved by technology

Generally speaking, the photoelectric tracking sensitivity is high, and the structural design is more convenient, but it is greatly affected by the weather. If the sun is covered by dark clouds for a long period of time, the sun's rays often cannot shine on the silicon photoelectric tube, which will cause The tracking device cannot be aimed at the sun, and sometimes even cause malfunction of the actuator

[0010] As mentioned above, among various types of trackers, the accuracy of purely mechanical trackers is low, and the purpose of tracking is to increase energy density. If the accuracy is low, the tracking efficiency is low, and the cost is additionally increased. In the device Adding a tracker loses its original meaning

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