Spectral type solar radiance measuring instrument

A technology for measuring solar radiation and illuminance, which is used in spectrum surveys and other directions, and can solve problems such as unseen patents or literature reports, inconsistent spectral distributions of sensor spectral characteristics, and potential safety hazards for long-distance optical fiber laying.

CN103207016BInactive Publication Date: 2015-01-14JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a spectral type solar radiance measuring instrument and belongs to the technical field of irradiance measurement and information processing. The measuring instrument is composed of an optical receiving unit, an optical coupling unit, a fiber optical spectrometer module unit, a global positioning system (GPS) module unit, a thermostatic control unit, a case and the like. According to the measuring instrument, key technologies such as solar radiation collection by a lens, fiber optic bundle transmission, grating light splitting and an array detector are adopted to measure solar radiance in ultraviolet, visible, near-infrared and infrared wave bands, and wired or wireless transmission of observation data is achieved through data interfaces. As a high-resolution solar irradiation observation instrument provided with a wavelength resolution function, the measuring instrument can obtain a two-dimensional spectrogram about irradiance-wavelength as well as a three-dimensional spectrogram about irradiance-wavelength-time at a certain moment, the data information quantity is rich, and broad application prospects in fields of meteorological observation, solar energy resource assessment, air pollution detection, modern agriculture and ecological security research and the like are provided.
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Description

technical field

[0001] The invention relates to the technical field of illuminance measurement technology and information processing, in particular to a solar spectral irradiance measuring instrument, which can be used to measure solar spectral irradiance in four bands of ultraviolet, visible, near-infrared and infrared. Background technique

[0002] Solar radiation is the most important source of energy for the earth and the driving force behind changes in the atmosphere and oceans. In recent years, scientists have found increasing evidence that changes in solar radiation cycles are linked to changes in Earth's climate. Small changes in the sun's illuminance can have a huge impact on our planet's climate. To study the relationship between solar radiation and global climate change requires long-term and accurate solar radiation observation data, so the observation of solar irradiance is obviously of great significance.

[0003] On the other hand, with the gradual shortage ...

Examples

Embodiment 1

[0059] Embodiment 1 The specific implementation of the instrument of the present invention will be described below with reference to the accompanying drawings.

[0060] Based on the spectrum type solar irradiance measuring instrument of the present invention, its principle block diagram is as figure 1 shown. The instrument of the present invention adopts optical dispersion method, and based on spectral measurement, array detector and ARM microprocessor as the core technology, it constitutes a spectral solar radiation illuminance measuring instrument.

[0061] The instrument includes: optical receiving unit, optical coupling unit, fiber optic spectrometer module unit, GPS module unit, constant temperature control unit and housing and other units. The optical receiving unit is located on the top of the housing to receive and process the light radiation signal from the sun; the optical coupling unit connects the output interface of the optical receiving unit and the input interf...

Embodiment 2

[0078] Embodiment 2 illustrates the working principle of the spectral solar irradiance measuring instrument of the present invention.

[0079] Working principle and working process of the present invention comprise:

[0080] Step 1: Start the instrument, and the instrument will automatically initialize. Use the built-in GPS module unit to determine the local time;

[0081] Step 2: If the time is within the range of local sunrise to sunset, the instrument starts the constant temperature control unit. When the temperature tends to be stable, set the integration time of the array detector to the minimum value, open the shutter of the optical system, and the light radiation of all wavelengths emitted from the sun at a certain moment enters the diffuse transmission plate through the double protective cover, and passes through the diffuse transmission plate The uniform mixing of the incident light eliminates the directional error (that is, the cosine effect);

[0082] Step 3: The...