Abstract:
An electronic device is provided with a display and a solar cell ambient light sensor that receives light through a portion of the display. The solar cell ambient light sensor may include one or more thin-film photovoltaic cells. A voltage that accumulates within the thin-film photovoltaic cell in response to ambient light is sampled and converted into ambient light data. The device includes control circuitry that modifies the intensity of display light generated by the display based on the ambient light data from the photovoltaic cell. The solar cell ambient light sensor is attached to a transparent cover layer, a color filter layer, or any other layer of the display. When the accumulated voltage is not being sampled for ambient light measurements, the voltage may be used to provide charge to a battery in the device.
Abstract:
A sterilization system consisting of a mobile emitter, a sensing subsystem and a data logging subsystem is described. The emitter has one or more UV emitting lamps or devices. The sensing system comprises at least one remote UV sensor and at least one door sensor. The door sensor comprises a safety shut off door detector and may contain an emergency stop detector and arming detector to protect people from being exposed to UV energy. The system has a remote control for starting, stopping and setting system parameters which include but are not limited to: treatment time, dosage, room size, room number, unit number, floor, facility name, operator name, operator identification number, password, default dosage values, dosage, and patient identification number. The number of treatments per unit of time can be maximized because of the use of incident light measurement.
Abstract:
A beltless system for attaching MILES, laser signal-type, sensors to sides of combat vehicles during combat simulations includes at least one mounting magnet attached to each MILES sensor for a vehicle. The sensors can be mounted on respective sides of the vehicle in an arcuate pattern. A common receiver can be in communication with all sensors on a given side of the vehicle via an invisible wireless communication link.
Abstract:
The present invention is a portable UV detector with simple operation, wherein a printed circuit board, a display module and multiple batteries are housed in the cylindrical body. A display panel window is located on the external wall of the cylindrical body to mount the display module with an appropriate UV level indicator. The light detector located underneath the filtering lens is enabled at the push of a button to measure the intensity of incoming light, whenever a user wants to find out the intensity of UV radiation in an outdoor environment. Light of different intensity exhibits different electrical characteristics in terms of current flow, voltage or resistance. Therefore, through the light detector a value is measured and converted to an appropriate reading scale corresponding to the UV radiation level measured which is then shown on the display of the UV detector.
Abstract:
A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space. In addition, the variable transmission rate may be further dependent upon a rate of change of the total light intensity in the space.
Abstract:
A light measurement device (10) for lighting apparatus (30), comprising a photovoltaic cell (11), which draws electrical energy from the light radiation (R) emitted by one or more lighting apparatus (30) associated to the device (10) via a storage capacitor (20, C1), a light sensor (12), which periodically samples the light radiation (R1) reflected from at least one surface illuminated by the coupled lighting apparatus (30) and/or a pyroelectric sensor (13), which detects movements below said lighting apparatus (30); the electric power is managed by a control circuit (14) and supplied to a light measuring circuit (16) and/or to a movement detecting circuit (17), which detect, process and transmit the measurements related to the light and/or to the movements to the lighting apparatus (30), via a radio transceiver (15), preferably a "spread spectrum" radio transceiver (15).
Abstract:
The invention relates to a miniaturized optoelectronic system for producing static or moving images of scenes or individual objects (11) and for determining and evaluating the spectral properties of the objects (11) within a scene or of individually imaged objects (11). According to the invention, a system of this type comprises optical components and beam paths for producing static of moving images of a scene or of an individual object (11), optical components and beam paths for determining the spectral properties of one or more objects (11) contained in the scene or of the individual object (11), at least one image sensor as an optoelectronic converter, electronic components for processing the output signals of the image sensor, an information output unit designed to present the results in a sensory manner, preferably for presenting the spectral properties in association with the objects (11) in a visually perceptible manner, and means for supply power to electronic components, wherein a design of the system in the form of a hand-held device, also as a handheld, is provided for.
Abstract:
A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space. In addition, the variable transmission rate may be further dependent upon a rate of change of the total light intensity in the space.
Abstract:
A photodetector of the invention is characterized by having a plurality of detector elements that are arranged over a light-transparent substrate and are connected in parallel. A foldable portable communication tool having two display portions of the invention is characterized by including one photodetector which includes a plurality of detector elements connected in parallel.
Abstract:
A system configured to monitor ambient illumination experienced by a subject. In one embodiment, the system comprises an illumination sensor, a timer, and a storage module. The illumination sensor is configured to monitor an intensity of ambient illumination within two or more wavelength ranges by generating one or more output signals that convey information related to the intensity of ambient illumination within the two or more wavelength ranges. The timer is configured to indicate the passage of periods of time. The storage module is configured to store information related to the intensity of ambient illumination within the two or more wavelength ranges, as conveyed by the one or more output signals, for individual periods of time. The system is portable to be carried by the subject.