11 results about "Dusk" patented technology

The invention discloses a natural stone texture imitating artificial stone sample color detection device, and relates to the technical field of detection, the natural stone texture imitating artificial stone sample color detection device comprises a vertical machine shell, the vertical machine shell is internally divided into an upper layer mounting area, a middle layer mounting area and a lower layer mounting area along the height direction; the illumination simulation system comprises a first illumination module mounted in the middle-layer mounting area and a second illumination module mounted in the upper-layer mounting area, the first illumination module is used for simulating morning light and evening light in daily life, and the second illumination module is used for simulating noon vertical light; and the sample conveying and positioning mechanism is arranged in the lower-layer mounting area. Through illumination scene precision, detection process automation and module layout rationalization, the core defects of traditional manual detection are effectively overcome, the accuracy and consistency of natural stone imitating artificial stone flower color detection can be improved, the large-scale production requirement can be met, and the method is suitable for large-scale production. The method is of great significance to promotion of industry detection technology upgrading, reduction of user complaints and improvement of product market competitiveness.

The application discloses a method for promoting the squaring and flowering of sugarcane by outdoor differential light compensation induction, and belongs to the technical field of agricultural planting. The method comprises the following steps: adopting the method to perform differential light compensation treatment on late-flowering or difficult-to-flower sugarcane parents at dusk, fixing the illumination time to 12h20min, performing the treatment for nearly one month, then gradually shortening the illumination time every day along with the delay of the sunrise in the morning, performing the treatment for nearly two months, and finally realizing the early flowering of the late-flowering sugarcane parents and the flowering of the difficult-to-flower parents, so as to ensure that the flowering parents meet the flowering period of the hybridization parents in a plan, and complete the hybridization combination in the plan.

A microwave motion detection system and lighting applications. Certain types of lighting devices turn on / off and may respond to certain triggers (e.g., motion-activation, dusk-to-dawn, etc.), etc. Such lighting devices may be battery powered and have minimal on-board circuitry. Coordinating these lighting devices together to provide zoned lighting functionality has not been commercially successful. Various aspects of the present disclosure are directed to “smart enough” lighting solutions. Smart enough lighting solutions may include link-based connectivity that enables coordination between peer lighting devices. The decentralized system may enable groups of smart enough lighting devices to communicate salient events (triggering conditions and operational parameters) across a mesh network, without centralized coordination. For example, each of the smart enough lighting devices may use point-to-point communication protocols to directly communicate with its peer devices, relaying information throughout the group.

The invention relates to the technical field of port illumination adjustment, in particular to a port storage yard dynamic dimming method fusing an astronomical algorithm and operation scene recognition, which comprises the following steps: constructing a background illumination model dynamically changing along with time; constructing a storage yard operation situation thermodynamic diagram; constructing a demand mapping rule base, and performing strategy matching on the mapping rule base and the job situation thermodynamic diagram; and constructing a lamp control model, and introducing multi-objective optimization calculation to generate a final control instruction. According to the port storage yard illumination multi-dimensional dynamic dimming method integrating the astronomical algorithm and the operation scene recognition, a cooperative control technology integrating the astronomical algorithm (time dimension) and the AI scene recognition (space dimension) is adopted, only low power is maintained in a storage yard operation area in the daytime, operation illumination is automatically improved to a high-activity area at night, energy conservation and safety are both considered, and the method is suitable for large-scale popularization and application. And a dual smoothing mechanism of smoothing in the morning and evening transition period and real-time dimming flicker prevention is designed, so that sudden brightness change or flicker is avoided, and the visual fatigue of operators is effectively reduced.

The application relates to the technical field of precipitation analysis, in particular to a tropical cyclone precipitation analysis method and device based on dynamic mapping of a solar dawn and dusk line. In the method, a solar tracking time framework is constructed to convert the UTC time of any latitude and longitude point in the world into STT time coordinates, and then the time sequence reconstruction and daily variation statistics of a tropical cyclone path point and a surrounding precipitation field are carried out. The specific steps comprise the following steps: obtaining high-resolution tropical cyclone path and precipitation data; converting world time information into solar tracking time information; determining a mask region with the tropical cyclone trajectory point as the center; extracting effective precipitation grids in the mask region; taking the solar tracking time information as a label to analyze the data, and obtaining the daily variation information of the tropical cyclone precipitation. The method overcomes the deviation caused by the traditional time framework among different latitudes and longitudes, and can reveal the daily variation law of the tropical cyclone precipitation system under the unified solar tracking time reference framework.

Method and system for determining a night temperature using a photovoltaic module This description relates to a method for determining an ambient night temperature Ta' in a system comprising a photovoltaic module (104), the method comprising: a) determining, using an electronic processing device (110), from measurements of the short-circuit current Isc and measurements of the open-circuit voltage Voc of the photovoltaic module, a first value Ta1 representative of the ambient outdoor temperature in the vicinity of dawn on a first day and a second value Ta2 representative of the ambient outdoor temperature in the vicinity of dusk on the first day;(etb) calculate, using the electronic processing device, from the first value Ta1 and the second value Ta2, using a predefined mathematical function Ta', a set of one or more values ​​representative of the evolution of the ambient nighttime outside temperature during the night following said first day. Figure for the abbreviation: Fig. 2;

The present invention discloses a method, device, and medium for rapid detection of dawn and dusk fog based on an adaptive threshold visual background extractor. The method comprises: obtaining H8 / AHI data and ground station fog observation marker data during the dawn and dusk periods and preprocessing them; constructing a time series detection dataset based on the H8 / AHI data; constructing an adaptive threshold visual background extractor based on the ViBe model, denoted as the ST-ViBe model; introducing an LBSP texture feature description operator when initializing the background model, and introducing a SILTP texture feature when establishing a pixel foreground detection parameter set; adaptively adjusting model parameters based on the input time series detection dataset; using the ST-ViBe model, obtaining preliminary fog detection results based on the time series detection dataset; and optimizing the preliminary fog detection results using traditional cloud removal and post-processing methods to remove residual clouds and afterimages. The present invention can accurately, efficiently, and rapidly detect dawn and dusk land fog.

The invention discloses a long-distance multispectral day and night monitoring method and system for adaptive communication. The method comprises the following steps: acquiring environment illumination brightness, time information and a brightness rapid change event, judging a monitoring working state based on the information, controlling a thermal imaging unit to be started or closed in a dawn, daytime, shady fog, dusk or night mode, driving a time multiplexing coding optical element (TMCA) to perform time-sharing gating between white light and near-infrared light wavebands according to a spectrum time slot, and performing time-sharing gating between the white light and near-infrared light wavebands according to a spectrum time slot. And the spectrum time ratio is dynamically adjusted based on the ROI imaging quality. And the system evaluates the quality of a communication link, adaptively selects FSO or RF link transmission, preferentially uploads ROI data when the bandwidth is limited, and caches and supplementarily transmits other data. According to the method, multispectral imaging is realized through the TMCA, and the imaging quality of a key area is improved by combining the high-speed illumination detection of the event camera and the ROI sub-exposure mechanism.

The application discloses an autonomous yaw planning method based on yaw angle dawn-dusk value optimization calculation, proposes a method for improving satellite heat dissipation conditions by rotating the satellite yaw angle, and designs a method for calculating the dawn angle and the dusk angle of the yaw rotation according to the thought, so as to realize the constraint conditions of considering the calculation capacity, period and memory capacity of the on-board computer, appropriately simplifying the link involving complex operation in the yaw dawn-dusk angle calculation method by using an approximate expression, and improving the calculation efficiency and memory space occupation. The application solves the demand of small heat dissipation area and large heat dissipation power of the existing on-board computer of the remote sensing satellite.

The utility model discloses a bird repelling and deinsectization system which comprises a plurality of bird repelling and deinsectization modules, each bird repelling and deinsectization module comprises a storage battery, a control chip, a deinsectization device, a voice bird repelling device and an illumination intensity sensor, the storage battery is connected with the control chip and supplies power to the control chip, and the illumination intensity sensor is connected with the control chip. The illumination intensity sensor can detect sunlight intensity and transmit information to the control chip, a first switch is arranged between the storage battery and the insect killing device, the insect killing device can attract and kill mosquitoes, and a second switch is arranged between the storage battery and the voice bird repelling device. The voice bird repelling device can make a sound to repel birds, the control chip is connected with the first switch and the second switch, and the control chip can control the first switch and the second switch to be switched off or switched on. The system can repel birds in the daytime and kill insects from dusk to night, works in all weathers, and improves the anti-bird effect.