Heliograph

Abstract

The invention provides a heliograph, and belongs to the field of measuring equipment. The heliograph is characterized in that the heliograph comprises a light cylinder, a lens, an aperture diaphragm, an outside thread pressing ring, a sensor, a single-chip microcomputer, and a display screen, the lens is fixed at one end of the light cylinder via the outside thread pressing ring, the aperture diaphragm is fixed in the light cylinder via the outside thread pressing ring, the lens is a flat-plate-shaped circular structure, the aperture diaphragm is a flat-plate-shaped circular structure, the single-chip microcomputer is connected with the sensor, and the display screen is connected with the single-chip microcomputer. According to the heliograph, an optical system, a sensor system, and a photoelectric signal processing system are respectively improved, the problems of elimination of stray light of the optical system, radiation response of the sensor, and the design and packaging of the sensor of the heliograph are solved, and the measuring precision of the heliograph is effectively improved.

Description

technical field [0001] The invention belongs to the field of measuring equipment, in particular to a sunshine meter. Background technique [0002] With the increasingly prominent energy crisis, the investment in research and development of renewable energy has been increasing, and solar energy has been given special attention because of its clean characteristics. The measurement of sunshine hours is an important part of the measurement of solar radiation time distribution. Observing sunshine hours is useful for understanding changes in solar direct radiation, monitoring weather and climate conditions, analyzing and forecasting future weather, agricultural production, solar energy development, architectural planning and design, and environmental monitoring. etc. are significant. WMO defines sunshine hours as direct solar irradiance reaching or exceeding 120W / m in a given period of time 2 sum over time. In meteorology, the sunshine meter is usually used to observe the sunsh...

AI Technical Summary

Problems solved by technology

However, with the advancement of science and technology, especially photoelectric measurement technology, and the continuous improvement of measurement requirements, the current radiation measurement methods and specifications cannot fully meet the growing needs, and must be adjusted and improved according to actual development

Especially when using radiation measurement technology to measure sunshine hours, the sunshine meters in my country's meteorological services generally have a narrow spectral response range, low accuracy of measurement data, and poor reliability.