An intelligent shading object, comprises a plurality of shading elements, a shading element deployment mechanism, a support structure, and a base unit. A shading element deployment mechanism deploys a plurality of shading elements independently of each other. A support structure is coupled to the shading element deployment mechanism. A base unit is coupled to the support structure to provide stability to the support structure, the shading element deployment mechanism, and the plurality of shading elements.

An electronic device for determining an ultraviolet (UV) dose includes a memory, at least one non-UV sensor, a display, and a processor, coupled to the memory, the at least one non-UV sensor, and the display. The processor is configured to determine a context of the electronic device, obtain information of ambient light using one or more parameter sensed by the light sensor, estimate an ultraviolet (UV) dose based on the context of the electronic device and the information of ambient light, and control the display to output information of the UV dose.

A device measuring a percentage of forest canopy based on a system measuring a direct radiation of sunlight and light reception. In this device, the structure of the canopy is the main base and the amount of light passing through a sensor structure and measurement of light intensity was the foundation of this invention.

A software application is provided to easily determine an indication of an amount of light available at a location at a given point in time. The software application may be used indoors or outdoors and is configured to be easy to use and highly accurate.

A solar monitoring system for measuring solar radiation intensity comprising a tracking unit having two-axis movement comprising, head mounted with first and second irradiation measuring units, and a controller. The first irradiation measuring unit comprises a direct normal irradiance (DNI) sensor and the second irradiation measuring unit includes a diffuse horizontal irradiance (DHI) sensor and a global horizontal irradiance (GHI) sensor. The controller receives inputs from the sensors or a software program configured to control orientation of the image capturing head so that the DNI sensor is always exposed to the sun, and the shading disc is always directly between the DHI sensor and the sun.

A technique and apparatus for monitoring a plant canopy over a field is disclosed. The technique includes receiving first sensor values from a plurality of plant canopy sensors disposed in or on a ground of the field under the plant canopy. The first sensor values are indicative of near-infrared (IR) light reflected or reradiated from the plant canopy. Second sensor values are also received from the plant canopy sensors. The second sensor values are indicative of red light that is incident through the plant canopy. A map of the plant canopy may be generated based upon the first and second sensor values.

A method and device (10) for making a calibrated measurement of light from an object (E). In a first measurement window (W1), object light (L.sub.E) is received from the object (E) onto a beam splitter (11) which splits the light into a signal path (Ps) and a reference path (Pr). A first signal (S1=T.Math.L.sub.E.Math.Hs) is measured by a signal detection element (15s) in the signal path (Ps). A second signal (S2=R.Math.L.sub.E.Math.Hr) is measured by a reference detection element (15r) in the reference path (Pr). In a second measurement window (W2), calibration light (L.sub.C) is received onto the beam splitter (11). A third signal (S3=R.Math.L.sub.C.Math.Hs) is measured by the signal detection element (15s) in the signal path (Ps). A fourth signal (S4=T.Math.L.sub.C.Math.Hr) is measured by the reference detection element (15r) in the reference path (Pr). A measurement value of the object light (L.sub.E) is determined based on the measured signals (S1,S2,S3,S4).

A pest surveillance system comprising at least one pest monitoring apparatus and a main server is provided. The pest monitoring apparatus comprises an image capturing device, an environmental status sensing device, a controller and a network transmitter. The at least one pest monitoring apparatus is disposed in at least one space. The image capturing device is used for capturing an image of a pest catcher and generating an original image. The environmental status sensing device is used for detecting environmental status and generating an environmental parameter. The network transmitter is coupled to a network. The main server is connected to the network and receives the at least one original image and the at least one environmental parameter. An image processor of the main server calculates each original image according to each environmental parameter and generates a pest status data.

A method includes: receiving, by a terminal device, position information of the terminal device via a wireless signal, and time information; obtaining solar radiation amount information corresponding to the position information of the terminal device and the time information; obtaining a corrected received-light amount by correcting the amount of light received by the terminal device, based on a radio field reception intensity of the wireless signal that includes the position information, the amount of light received being indicated in the solar radiation amount information; and obtaining, by the terminal device, a cumulative value of amounts of light which the user of the terminal device has been exposed to, using the corrected received-light amount.

To provide a solid-state light-receiving device for ultraviolet light which can measure the amount of irradiation with ultraviolet light harmful to the human body using a simplified structure and properly and accurately, which can be readily integrated with a sensor of a peripheral circuit, which is small, light-weight, and low-cost, and which is suitable for mobile or wearable purposes. One solution is a solid-state light-receiving device for ultraviolet light which is provided with a first photodiode (1), a second photodiode (2), and a differential circuit which receives respective signals based on outputs from these photodiodes, wherein a position of the maximum concentration of a semiconductor impurity is provided in each of the photodiodes (1,2) and in a semiconductor layer region formed on each photodiode, and an optically transparent layer having a different wavelength selectivity is provided on a light-receiving surface of each photodiode.