2results about How to "Evaluation Method Science" patented technology

The invention belongs to the field of photovoltaic technology, and discloses a method and system for evaluating different types of roof photovoltaic installation potentials in different climate regions, and the method comprises the steps: shooting different types of aerial images, including orthographic top views and horizontal side views, of buildings with installed roof photovoltaic in different climate regions by using an unmanned aerial vehicle, and combining a roof / photovoltaic identification model to identify the installation potential of different types of roof photovoltaic in different climate regions; and the roof area and the photovoltaic area of each building in the image are counted, and the quotient of the photovoltaic area and the roof area is a roof available coefficient, so that the roof available coefficients of different types of buildings in different climate regions are summarized. The coefficient is closer to an actual value and is more comprehensive and practical compared with 100% utilization or 3D shadow analysis, and in an existing simple coefficient multiplication method, the value of the coefficient is not perfect and scientific. Recognizing the building roof area in the region by combining a roof recognition model; and determining functional attributes of the house building according to the POI data.

This invention discloses a method for evaluating the storage lifetime of a missile-borne fiber optic inertial navigation system, comprising: determining the acceleration temperature value T of the test. k The acceleration temperature value T was obtained. k Under these conditions, the acceleration coefficient A of the fiber optic inertial navigation system F According to the acceleration coefficient A of the fiber optic inertial navigation system F Storage time t required for fiber optic inertial navigation systems 贮存时间 The acceleration temperature value T was obtained. k Under these conditions, the time t required to conduct accelerated testing 加速时间 According to t 加速时间 Determine several sampling times; at the accelerating temperature value T k Under certain conditions, accelerated testing was conducted on the fiber optic inertial navigation system (INS), and degradation-sensitive parameters of the INS were acquired at each sampling time. A relationship between these degradation-sensitive parameters and time was constructed. Based on the relationship between these parameters and time under storage temperature conditions, and the out-of-tolerance criterion for the degradation-sensitive parameters, the storage lifetime of the INS under storage temperature conditions was obtained. This invention achieves the assessment of the storage lifetime of fiber optic INS, with advantages such as short testing time, scientific evaluation method, and reasonable evaluation results.