Certain aspects pertain to a combination sensor comprising a set of physical sensors facing different directions proximate a structure, and configured to measure solar radiation in different directions The combination sensor also comprises a virtual facade-aligned sensor configured to determine a combi-sensor value at a facade of the structure based on solar radiation readings from the set of physical sensors

Combi-sensor systems

Certain aspects pertain to a cloud detector comprising a first detector module directed to a first region of the sky and a second detector module directed to a second region of the sky. Each detector module has a tube enclosing one or more sensing elements. The one or more sensing elements of the first detector module are configured to take weather condition readings from the first region of the sky. The one or more sensing elements of the second detector module are configured to take weather condition readings from the second region of the sky. In one aspect, the cloud detector is configured to detect cloud cover based on these weather condition readings. In some cases, the one or more sensing elements comprise an infrared radiation detector (e.g., thermopile) for measuring infrared radiation intensity and a photosensor element for measuring sunlight intensity.

Sunlight intensity or cloud detection with variable distance sensing

A sign ( 10 ) for display of an environmental condition, including a display surface ( 12 ) having at least one scale ( 16 ) indicating levels ( 16.1 to 16.6 ) of the environmental condition. At least one indicator ( 14 ) is provided which is movable over the at least one scale ( 16 ) to provide a visual indication of a predetermined level ( 16.1 to 16.6 ) of the environmental condition. Control means ( 202 to 208 ) are provided for moving the indicator(s) ( 14 ) over the scale(s) ( 16 ). The control means ( 202 to 208 ) includes a remote device management module ( 202 ) which is controllable from a remote location ( 110, 120 ) over a wireless data network ( 100 ) to move the indicator(s) ( 14 ) to the predetermined level ( 16.1 to 16.6 ). The present invention also provides a corresponding system for display of an environmental condition.

Sign and system for display of environmental conditions

There is provided a solar powered light intensity measurement device which includes one or more photovoltaic cells, one or more resistors and one or more light emitting diodes. The one or more photovoltaic cells convert light to electricity, the output corresponding to the intensity of incident light. Electrically activated from the photovoltaic cells, through the one or more resistors, the light emitting diodes emit a signal color, further corresponding to their electrical activation and hence to the intensity of light incident upon the one or more photovoltaic cells. The signal color is compared to reference color or chart for use in determining the relevant light intensity. In one embodiment, the device further includes an analog switch.

Solar-powered light intensity measurement device

The present invention is an accumulated light meter that generates data concerning the quantity of photosynthetically active radiation available over a measured period of time. The device can calculate a daily light integral (DLI) that corresponds to the amount of light required by certain plants in order to optimize photosynthesis. The device also possesses the ability to filter out the effect that wavelengths of unproductive light have on the calculated values since not all light is conducive to photosynthesis and different species of plants can utilize different wavelengths of light in dissimilar ways.

Instrument and method to measure available light energy for photosynthesis

A sunlight measuring device that quantifies the accumulation of light at a particular site. The sunlight measuring device is a battery-operated device mounted on a stake for easy insertion into the ground. The device is placed at the intended site for growing a plant. The light that falls on the sunlight measuring device over a period of time is accumulated and the light accumulation is represented by a visual signal that indicates one of four light conditions: full sun, partial sun, partial shade, full shade.

Sunlight measuring device

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Sunlight measuring device