Device and method for rapid calibration of sensitivity of pyranometer

Abstract

The present invention provides a device for rapid calibration of the sensitivity of a pyranometer. The device comprises a light source camera obscura, a taenidium rod, a liftable pedestal, a stepping motor, a test board camera obscura, a laser positioning device, a main control device and a rotating motor. The light source camera obscura and the camera obscura are rapidly aligned and connected to form a large camera obscura which communicates up and down, and a movable hood is arranged in the light source camera obscura and the camera obscura; the taenidium rod penetrates and is arranged in the light source camera obscura, one end of the taenidium rod is connected with a light source, and the other end of the taenidium rod is connected with a stepping motor; the liftable pedestal is arranged in the test board camera obscura, a rotating disk is arranged on the liftable pedestal and is provided with a plurality of screws, the laser positioning device is arranged at the top surface of the liftable pedestal, and the liftable pedestal is provided with a voltage signal acquisition numerical table; and the main control device is arranged at the outer of the test board camera obscura. The device and method for rapid calibration of sensitivity of a pyranometer are able to automatically regulate the irradiance of a light source and rapidly find out an area with uniform irradiance to develop the calibration work of the sensitivity of a pyranometer.

Description

technical field [0001] The invention relates to a device for rapid calibration of pyranometers. The pyranometer is a most widely used instrument for measuring solar irradiance in the field of meteorology and photovoltaic power stations; in particular, it relates to a rapid calibration device for pyranometer sensitivity and method. Background technique [0002] The outdoor method pyranometer sensitivity calibration technology is greatly affected by weather and other factors, and the calibration test cannot be carried out when the climate conditions do not meet the requirements of the calibration environment, which has great limitations; the indoor method pyranometer sensitivity calibration technology is mainly divided into two types, one calibration The device is huge and complex, and requires many methods and equipment to control the stability of the light source. Calibration takes a long time, and the system often needs to be adjusted, which is prone to failure. Another ty...

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Problems solved by technology

However, these documents all have the problem of high requirements on the position of the light source, manual adjustment of the irradiance, and inconvenient operation.

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