Pan-knowledge space-time object expression database building method

A technique for establishing methods and spatio-temporal data, which is applied in the field of establishing a general-knowledge spatio-temporal object representation database, which can solve phenomena that cannot effectively express spatial or temporal continuity, cannot express the geometric shapes and postures of spatio-temporal objects, integrated spatio-temporal expression, and four-dimensional Insufficient spatial and temporal data expression ability and other problems, to achieve the effect of effective spatial and temporal analysis, diverse expression methods, and broadening the application field

Active Publication Date: 2017-12-15
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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Problems solved by technology

[0008] The purpose of the present invention is to solve the shortcomings of the existing spatio-temporal data model, which are insufficient in the expression of spatio-temporal integration and four-dimensional spatio-temporal data, cannot effectively express continuous phenomena in space or time, and cannot express the geometric shape and posture of spatio-temporal objects , and propose a general knowledge-based spatio-temporal object expression database establishment method

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  • Pan-knowledge space-time object expression database building method

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specific Embodiment approach 1

[0026] Specific implementation mode one: the general knowledge-based spatio-temporal object expression database establishment method of this embodiment, such as figure 1 shown, including:

[0027] Step 1. Establishing a spatio-temporal object representation data model; types of spatio-temporal object representation data models include: rigid body motion model, fluid motion model, field model, quasi-dynamic model, and static model.

[0028] Step 2. Collect spatio-temporal data.

[0029] Step 3: According to the type of the spatio-temporal data, the spatio-temporal data is modeled using the spatio-temporal object representation data model and the modeled spatio-temporal data is stored in the database.

[0030] The beneficial effects of this embodiment are as follows:

[0031] First of all, most of the current GIS spatio-temporal data models describe the movement of two-dimensional spatial objects, and lack the ability to express two-dimensional and three-dimensional integration...

specific Embodiment approach 2

[0035] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: in step one,

[0036] The field fusion with time and space as the "information core" can realize the two-way mapping between knowledge space and physical space, and express the physical space and knowledge space in a holographic space. However, physics uses motion to describe the continuous changes in time and space of objects, so the spatio-temporal GIS model should start with the description of motion characteristics. However, the movement forms of space-time objects in the objective world are ever-changing, and it is unrealistic to use a unified model to describe the movement of space-time objects. Since the behavior is one of the specific manifestations of the motion of the space-time object, this paper divides it into five types of motion forms: rigid body motion, fluid motion, field, quasi-dynamic and static according to the behavior character...

specific Embodiment approach 3

[0079] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is:

[0080] The quasi-dynamic object set family in the quasi-dynamic model further includes: shape change, attitude change, position change, initial shape, initial position, initial attitude, and sampling time; wherein, the shape change is a function of the shape of the space-time object and the sampling time, Attitude changes as a function of the inclination, direction, and inclination of the space-time object; position changes as a function of time and three-dimensional coordinates in the spatial reference coordinate system;

[0081] The quasi-dynamic attribute set family in the quasi-dynamic model further includes: the ID of the spatio-temporal object, the name of the spatio-temporal object, the value of the spatio-temporal object, and the change value of the spatio-temporal object attribute over time. which is Figure 5 The data structure in the UML diagram shown i...

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Abstract

The invention relates to the field of GIS space-time data model building, in particular to a pan-knowledge space-time object expression database building method. In order to solve the problems that an existing space-time data model has scarce capacity of space-time integrating expression and four-dimensional space-time data expression, the spatial or temporal continuity phenomenon cannot effectively expressed, and the geometrical shape and the gesture of a space-time object cannot be expressed, the pan-knowledge space-time object expression database building method comprises the steps that a space-time object expression data model is built, wherein the types of the space-time object expression data model comprise a rigid motion model type, a fluid motion model type, a field model type, a quasi-dynamic model type and a static model type; space-time data is collected; according to the type of the space-time data, the space-time data is modeled by using the space-time object expression data model, and the modeled space-time data is stored in a database. The method is suitable for space-time data modeling.

Description

technical field [0001] The invention relates to the field of GIS spatio-temporal data model construction, in particular to a method for establishing a pan-knowledge spatio-temporal object expression database. Background technique [0002] Since US Vice President Al Gore proposed the Digital Earth in 1998, the MIT Automatic Identification Center (Auto-ID), established in 1999, first clarified the basic meaning of the Internet of Things (everything can be connected to the Internet) and in 2006, the CEO of Google made the first Since the concept of cloud computing was put forward, the application demand of human beings for information platforms such as smart earth and smart city is growing rapidly. In 2008, IBM first proposed the concept of smart earth, which is the organic integration of digital earth and the real world through the Internet of Things, and has been widely used in the fields of national defense and national security. The smart city is based on the digital city,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F17/30G06T17/05
CPCG06F16/29G06F30/20G06T17/05
Inventor 丁小辉张树清陈祥葱李华朋刘照魏延生
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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