Multipurpose high precision direct radiometer

Abstract

The present invention relates to a meteorological measurement instrument, in particular to a multipurpose high precision direct radiometer, concretely to a direct radiometer used for measuring the direct radiation of the sun, and belongs to the direct radiometer technology field. According to the technical scheme provided by the present invention, the multipurpose high precision direct radiometer comprises an external cylinder and an optical measurement device which is located in the external cylinder, is used to measure the direct radiation of the sun and is in coaxial distribution with the external cylinder. A front alignment hole is arranged at the front end outside the external cylinder, a rear alignment hole in coaxial distribution with the front alignment hole is arranged at the rear end outside the external cylinder, and the axes of the front alignment hole, the rear alignment hole and the external cylinder are parallel with one another. A rear base is arranged at the rear end of the external cylinder, and a connector assembly used for outputting the sun direct radiation measured by the optical measurement device is arranged in the rear base. The multipurpose high precision direct radiometer of the present invention is compact in structure, can measure the direct radiation in a sun multi-factor automatic measurement system, enables the measurement precision of the sun direct radiation to be improved, and is safe and reliable.

Description

technical field [0001] The invention relates to a meteorological measuring instrument, in particular to a multi-purpose high-precision pyrheliometer, specifically a pyrheliometer for measuring direct solar radiation, and belongs to the technical field of pyrheliometers. Background technique [0002] The definition of direct solar radiation is the radiation emitted from the sun surface and a small solid angle around it (the semi-open angle extending outward from the center of the sun is about 2.5°) and incident on a plane perpendicular to the axis of the solid angle. According to the definition of ISO 9060:1990, a pyrheliometer is mainly composed of three parts: 1), a pyroelectric sensor used to receive solar radiation, which is generally a plane or cavity coated with black paint; 2), used to form A light tube with a specified field of view (2.5°) and an inclination angle (1°); 3), an adjustment tool for fixing the pyrheliometer and the sun tracking system and aligning it wit...

AI Technical Summary

Problems solved by technology

[0006] 2) Pyranometers with tracking devices are bulky, heavy, and inconvenient to use and transport

[0007] 3) Pyranometers with tracking devices have no window heating function, which is prone to frost or condensation on the windows, which has a huge impact on direct solar radiation

[0008] 4) The measurement accuracy of the pyrheliometer with the tracking device is not high, and the temperature response error is relatively large

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