Photoelectric signal amplification circuit for photometric system

Abstract

The invention discloses a photoelectric signal amplification circuit for a photometric system. A non-inverting input end of a second input pin of an operational amplifier is connected with a first voltage feedback sampling resistor, an inverting input end of the second input pin of the operational amplifier is connected with a fourth resistor and a fifth resistor, a first output pin of the operational amplifier is connected with a second luminosity adjusting resistor, the second luminosity adjusting resistor is connected with the fourth resistor, the fifth resistor is connected with a second voltage feedback sampling resistor, the second voltage feedback sampling resistor is grounded, and a second output pin of the operational amplifier outputs secondarily amplified voltage signals. According to the photoelectric signal amplification circuit, sensed sunlight is converted into the voltage signals by the aid of a phototriode, the secondarily amplified voltage signals are outputted by the operational amplifier through subsequent processing of a voltage-dividing resistor, the luminosity adjusting resistor and the operational amplifier, and the requirement of a subsequent circuit is met. By the aid of the photoelectric signal amplification circuit, sunlight conversion efficiency is improved, precision is high, and various requirements of practical application are met.

Description

Technical field [0001] The present invention relates to the field of photometric systems, in particular to a photoelectric signal amplifying circuit used in photometric systems. Background technique [0002] Due to the rotation of the earth, compared to a solar photovoltaic power generation system at a fixed location, the four seasons of spring, summer, autumn and winter, the sun rises and sets every day, and the sun's angle of illumination changes all the time, which effectively ensures that the solar panels can always face each other. The sun, the power generation efficiency will reach the best state. [0003] At present, the universal solar metering system in the world needs to calculate the angle of the sun at different times of each day of the year according to the information such as the longitude and latitude of the installation point, measure the maximum light, and convert the measured sunlight into a voltage signal. enlarge. [0004] In the process of implementing the pres...

AI Technical Summary

Problems solved by technology

[0005] Existing photoelectric signal amplification circuits are composed of photoelectric conversion circuits, operational amplifier circuits, voltage comparators and gate circuits. The signal is applied to the follow-up circuit of the photometry system, which reduces the conversion efficiency of sunlight and cannot meet various needs in practical applications

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