The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

Systems and methods are provided to determine glare information. An optical filter is configured to attenuate visible light and pass near-infrared light and an image sensor is configured to detect light reflected by a surface after the reflected light passes through the optical filter. The image sensor is further configured to generate image data comprising a detected near-infrared portion of the light reflected by the surface. Processing circuitry is configured to receive the image data from the image sensor and determine near-infrared glare information based on the received image. The near-infrared glare information can be used to adjust display parameter associated with the surface or characterize near-infrared glare properties of the surface.

A method for determining a level of solar radiation at a point of interest (POI). Multiple sky images are captured by a distributed network of digital cameras. Sun location parameters are determined. A three-dimensional (3D) sky model is generated based on the sky images. Generating the 3D sky model includes generating 3D object data based on the sky images to model one or more objects in a region of sky, and generating position data to model a position of the one or more objects in the region of sky. A level of solar radiation at the POI is determined based on the position data and 3D object data of the 3D sky model and the sun location parameters.

Disclosed herein are systems, apparatuses, methods, and non-transitory computer readable media related to controlling tint of tintable window(s) that include various predictive modules, and quality assurance related modules.

Circadian health recommendations and/or automation instructions and spectral data on which they are based can be provided to a user through a mobile device that lacks a spectral sensor. A user mobile device lacking a spectral data uploads place and time data to a cloud-based circadian health system. A light-exposure model of the circadian health system estimates spectral data values based on the place and time data. The light-exposure model’s estimation can be based on data received by the circadian health system based on user devices equipped with spectral sensors and from other sources. A relatively small number of mobile user devices (with spectral sensors) can thus provide for spectral value estimates for a relatively large population of mobile user devices that lack spectral sensors—greatly expanding the range and number of people that benefit from improved circadian health.

Methods and systems for controlling tintable windows based on cloud detection.

Vegetation change information properly indicating a time series change of a vegetation state can be generated. To this end, a data group including vegetation data of multiple time points respectively associated with ratio information which is a component ratio of ambient light is an object to be processed. This device includes an extraction section that extracts, from the data group, vegetation data for use by using ratio information, and a generation section that generates vegetation change information indicating a time series change of a vegetation state by using the vegetation data extracted by the extraction section. By use of ratio information, vegetation data obtained under similar ambient light conditions can be collected.

The present invention relates to alternative equipment for solar energy prospecting with a focus on low cost, low complexity in installation, operation and maintenance, and high reliability. A low-cost solarimetric station consists of compact equipment capable of providing global irradiance measurements and estimates for direct and diffuse components, as well as hemispheric photographs, with acceptable levels of uncertainty. The pyranometer periodically provides global irradiance information to the system, and the camera records photos of the sky. Using machine learning algorithms, and based on that information, the equipment provides estimates for direct and diffuse irradiance components. The equipment has other meteorological sensors, GPS, and wireless communication facilities. The equipment has an energy supply and management system consisting of a photovoltaic module, charge controller, and battery, which provide the energy necessary for the station to operate.

A method and a device are provided for determining a global irradiance of solar radiation, and/or at least one of the components thereof, in a plane, wherein the components include direct radiation, diffuse radiation, and radiation reflected on the ground, with a device including at least one radiation sensor unit, a camera, and an evaluation unit which is provided for evaluating measurement data from the radiation sensor unit and/or from the camera. The radiation sensor unit for determining the irradiance of solar radiation is provided in a field of view of 180° over a plane. The camera for detecting a field of view of 180° is provided over a plane. A global irradiance of the solar radiation is measured and converted into the global irradiance and/or into one or more of the components thereof in the horizontal plane and/or in the plane inclined with respect to the horizontal plane.

The present disclosure relates to a light exposure monitoring system that includes a central control server; a plurality of indoor light exposure zones and a positioning system configured to communicate with the central control server to determine: a position (P) of an individual within the plurality of indoor light exposure zones, and a distance between a head of the individual and a floor within the plurality of indoor light exposure zones