Multi-purpose high-precision pyranometer

Abstract

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. According to the technical solution provided by the present invention, the multi-purpose high-precision pyrheliometer includes an outer cylinder and an optical measuring device located in the outer cylinder for measuring direct solar radiation and coaxially distributed with the outer cylinder. The front end of the front alignment hole is provided with a front alignment hole, and the rear alignment hole is arranged coaxially with the front alignment hole at the rear end of the outer cylinder. The axis of the front alignment hole, the axis of the rear alignment hole and the axis of the outer cylinder parallel to each other; a rear seat is provided at the rear end of the outer cylinder, and a connector for outputting the direct solar radiation measured by the optical measuring device is arranged in the rear seat. The invention has a compact structure, can meet the requirements of measuring direct radiation in a solar multi-element automatic measurement system, improves the measurement accuracy of solar direct radiation, 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

Images