43 results about "Dawn" patented technology

A solar central receiver system employing common positioning mechanism for heliostats relates to a system of concentrating and harvesting solar energy. The heliostats of said system are positioned like facets of a Fresnel type of reflector. The heliostats are placed in arrays, wherein each array has a common positioning mechanism. The common positioning mechanism synchronously maneuvers the arrays of heliostats in altitudinal and/or azimuthal axis for tracking an apparent movement of the sun. The common positioning mechanism is employed for synchronously orienting said heliostats with respect to a stationary object and the sun such that incident solar radiation upon said heliostats is focused upon said stationary object from dawn to dusk. Subsequent to each said orientation of said heliostats, collective disposition of said heliostats always forms an arrangement that is capable of reflecting and thereby focusing incident solar radiation upon said stationary object.

A device to repel and disperse waterfowl entering a proscribed area consists of a laser beam generator generating a laser beam, and a photoelectric switch is provided so that the inventive device is only activated from dusk to dawn. A motion sensor senses the presence of waterfowl and activates the light beam source that is aimed into the area. In the preferred embodiment, a timer is provided that may be set for a desired duration. When the desired duration has elapsed, the controller deactivates the light beam source. The light beam source may consist of a single laser beam or a multiplicity of laser beams shining into the protected area. In one preferred embodiment of the present invention, a single laser beam is split into a plurality or multiplicity of beams using a suitable beam splitter. The inventive device may be equipped with a system that enables one or more laser beams to sweep and oscillate through the protected area so that not only is full coverage of the area assured, but the elevation of the beams is at least, at some points in time, at the level of the eyes of the waterfowl so that the waterfowl can detect the presence of the laser beams and quickly flee the area.

The invention relates to a method for extracting an area target of an image based on fuzzytopology, which comprises the following steps: an original image is treated in advance; an optimal threshold value T is dawn into; an object to be extracted is defined as a fuzzytopology object; the optimal threshold T is used for inducing two threshold values T1 and T2; regional division is carried out on the object to be extracted; and finally, the object is extracted out. In the method, the two threshold values are dawn into by a fuzzytopology method for determining the interior, boundary and external of the object to be extracted, thus improving extracting quality to a certain degree; fuzzytopology connexity is carried out on boundary pixels so as to determine whether belong to the extracting range; a part duality mole (LBP) functor is dawn in in the analyzing process so as to increase judgment precision; in addition, the method for extracting the area target of the image based on fuzzytopology can significantly the extraction precision of the object, the boundary pixels of which is more difficult to be judged, thus obtaining better extraction results.

The invention provides a dual-mode night lighting managing device with a dynamic adjustment delay function. Functions of an ordinary lighting lamp and a moving sensing turning-on lamp are integrated, and the dynamic delay technology is used for switching the two functions. The dual-mode night lighting managing device comprises a power supply unit, a light sensing unit, a micro-control unit, a delay managing unit, a moving sensing control unit and a light emitting unit. At night, the light sensing unit automatically turns on a light source to turn on a fully-bright lighting mode. Under the condition that no trigger signals are input, the fully-bright mode continues until the dawn, and then the light sensing unit turns off the light source. At any time point of the night fully-bright mode, if a user sends out a trigger signal, the device responds through two steps, the first step is that the fully-bright mode of the light source is immediately switched to an energy saving mode, and the second step is that the input time point of the trigger signal is immediately stored in a storage, and a program that light source mode switching is repeatedly executed every 24 hours is started.

The application relates to an earth gas light suppression method and system for a synchronous band target optical observation satellite. The system includes a satellite, an optical observation moduleand a baffle, wherein the orbit of the satellite selects a dawn-dusk sun-synchronous orbit, and maintains the attitude to be earth-oriented; the optical observation module is installed on the satellite and is perpendicular to the main axis of the satellite; and the baffle is installed on the optical observation module, and during the operation of the satellite, the baffle is arranged between the optical observation module and a ground plane, wherein the satellite is operated according to an attitude maneuver rule model to achieve the traversal observation of latitudes that need to be stared. By adopting the technical scheme of the application, the suppression of the earth gas light can be realized only through a simple structural design, and the operation is simple and the cost is saved.

The invention provides a feed feeding device for mandarin fish domestication. The feed feeding device comprises a floating body, a shading tent, a feeding machine, a water injection assembly, a collection filter screen, a base, a driving assembly and four framework assemblies. The shading tent, the water injection assembly and the feeding machine are designed on the floating body, after the shading tent covers the floating body, the light intensity at dawn or dusk can be simulated, the water injection assembly injects water into the operation opening to stimulate mandarin fish fries to snatch food, the feeding machine can throw feed into the operation opening, and therefore remote feeding can be achieved; and the automation of daily management of mandarin fish domestication is improved. Moreover, due to the design of the collecting filter screen, the base, the driving assembly and the framework assemblies, part of feed which is not eaten in the water can be collected, so that waste of the feed is effectively avoided, and the situation that the water is polluted due to the fact that the feed is soaked in the pond water for a long time is reduced.

In a case where IR data of a near-infrared light image is data in which a visible light component and a near-infrared light component coexist, a point image restoration process is performed on the IR data using a first point image restoration filter based on a first point spread function for visible light of the optical system and a second point image restoration filter based on a second point spread function for near-infrared light of the optical system. An appropriate point image restoration process is performed on the IR data that is captured in a time zone of twilight or dawn by performing weighted averaging on a point image restoration process using the first point image restoration filter and a point image restoration process using the second point image restoration filter using a first gain α and a second gain β according to a light amount ratio between visible light and near-infrared light at the time of capturing the IR data.

A method includes projecting a dark virtual sky in a digital space. The dark virtual sky is transitioned to a dawn virtual sky in the digital space. The dawn virtual sky is altered to introduce a daytime virtual sky in the digital space. The daytime virtual sky is modified to produce a dusk virtual sky in the digital space. These operations are performed via color palette transitions in the virtual sky in the digital space in a time period of less than six minutes. The color palette transitions are in proportional time segments of a twenty-four hour day punctuated by periods of light and darkness of variable length corresponding to the revolution of the earth around the sun. A collection of gaze points is formed in the digital space. Each gaze point in the collection experiences cyclic changes between a minimum position and a maximum position during a gaze point size change cycle. Initially, each gaze point in the collection experiences different changes between the minimum position and the maximum position during initial gaze point size change cycles thereby forming a gaze point out-of-phase period. Subsequently, selected gaze points in the collection experience common changes between the minimum position and the maximum position during intermediate gaze point size change cycles thereby forming a gaze point hybrid phase period. Finally, all gaze points in the collection share common changes between the minimum position and the maximum position during final gaze point size change cycles thereby forming a gaze point in-phase period that lasts at least one half the time period of less than six minutes.

The invention discloses an evaluation method of photovoltaic accommodation capacity, comprising: establishing a photovoltaic accommodation capacity optimization model, the photovoltaic accommodation capacity optimization model includes a first objective function for realizing the minimum light rejection rate and a second objective function for realizing the maximum photovoltaic investment income Objective function; construct corresponding optimization constraints for the optimization model of photovoltaic consumption capacity, and solve the optimization model of photovoltaic consumption capacity through optimization constraints to optimize photovoltaic consumption capacity; construct evaluation index system of photovoltaic consumption capacity, evaluation index system Including one or more evaluation indicators; select one or more evaluation indicators for weight calculation from the evaluation indicator system, and determine the comprehensive weight of each selected evaluation indicator according to the objective weighting method; combine the selected evaluation indicators The comprehensive weight of the index is used to evaluate and analyze the optimized photovoltaic consumption capacity.

The invention discloses a park street lamp with a self-cleaning function and a using method thereof. The park street lamp with the self-cleaning function comprises a box body, a storage cavity with an upward opening is formed in the box body, a lighting lamp used for lighting is arranged in the storage cavity in an up-down sliding mode, the lighting lamp can be stored in the storage cavity, a rain cover is fixedly arranged on the top of the lighting lamp, the top of the rain cover is fixedly provided with a signal lamp used for indicating the flow condition in rainy days, the left side and the right side of the containing cavity are each provided with a water leakage opening, and the water leakage openings are in a funnel shape. The lighting lamp can be lifted at dusk and retracted into the containing cavity at dawn, and the lighting lamp can be automatically cleaned while being retracted, The transparency of the lighting lamp is guaranteed, and when the rainwater is heavy, the flashing of the signal lamp can remind pedestrians that the water at the water leakage opening is deep.

The present invention relates to a multipurpose extension cord device that provides electrical power to electrically connected devices as a function of the level of environmental lighting. The device receives power from an external electric supply, and has one or more grounded outlets. At least one light sensor provides detected light levels to a microprocessor which compares the detected light levels with threshold light values stored in memory. Based on a comparison of detected light levels and threshold light values, the microprocessor signals a electric power cut-off module to enable or disable electric power to the outlets; thus automatically activating or deactivating the electrically connected devices based on changes in environmental light levels.

An improved luminaire configured to detect dawn and dusk and to turn on, dim and/or turn off in response to the ambient light level. The luminaire is configured to delay turning on, dimming, and/or turning off such that light emitted by the luminaire can be utilized by neighboring luminaires in calculating the ambient light level in determining if dawn, dusk, or other low light condition has begun or is ending. The luminaires further utilize a timer for measuring the ambient light so as to avoid momentary or brief ambient light changes caused by, for example, weather conditions or temporarily reflected light such as by a vehicle positioned proximate to on or more of the luminaires

A method includes projecting a dark virtual sky in a digital space. The dark virtual sky is transitioned to a dawn virtual sky in the digital space. The dawn virtual sky is altered to introduce a daytime virtual sky in the digital space. The daytime virtual sky is modified to produce a dusk virtual sky in the digital space. All of the virtual sky transitions are performed in a time period of less than six minutes.