Roller Shutter Control Using Solar Radiation and Heating Modes
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Solution Overview
Problem
Existing systems fail to optimally manage solar radiation for temperature control in buildings, leading to increased fossil or electrical energy demands for heating and cooling, and do not effectively account for climatic conditions or user preferences.
Innovation Solution
A method and device that control motorized rolling shutters based on real-time temperature, solar radiation, and time, using affine lines with specific coefficients to determine optimal positions for maximum energy efficiency and comfort, by comparing solar radiation values with parameters derived from heating control modes and criticality levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the roller shutter is controlled frequently to optimize solar radiation management, then energy efficiency improves, but the lifespan of the motorized shutter decreases
Solution Approach 1:
The system uses affine functions with different criticality levels (1, 2, or 3) to determine the appropriate level of shutter control. Rather than continuously adjusting the shutter at maximum frequency, the system selects partial action levels based on the heating control mode and temperature criticality, reducing unnecessary actuations while maintaining energy efficiency.
Solution Approach 2:
The control system incorporates feedback from temperature sensors and solar radiation sensors to make intelligent decisions about when shutter adjustment is truly necessary. The feedback mechanism allows the system to avoid unnecessary control actions when environmental conditions are already favorable, thereby extending shutter lifespan while maintaining energy optimization.
2Loss of energy
If the roller shutter control system uses complex algorithms to optimize energy management, then energy efficiency improves, but system complexity increases
Solution Approach 1:
The system uses affine functions (y = ax + b) with parameters that change based on heating control mode and criticality level, rather than implementing complex nonlinear algorithms. The slope coefficient 'a' and ordinate 'b' are pre-determined values selected from sets corresponding to different operational modes, simplifying the computational requirements while maintaining optimization capability.
Solution Approach 2:
The control system applies different affine function parameters locally based on the specific heating control mode and criticality level. Rather than using a single complex global algorithm, the system selects appropriate simplified affine models for each local operational context, reducing overall system complexity while maintaining optimal performance in each mode.
3Loss of energy
If the roller shutter is kept closed to block solar radiation in summer, then cooling energy requirements are reduced, but natural lighting and warmth in winter are diminished
Solution Approach 1:
The system implements periodic control actions based on the time of day and seasonal patterns. The affine functions incorporate time as a variable, allowing the shutter to be opened during periods when solar radiation provides beneficial warmth (such as winter afternoons) and closed during periods when it causes overheating (such as summer midday), creating a periodic rhythm of opening and closing that responds to natural cycles.
Data Source
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AI summary
The invention relates to a method for controlling at least one shading device (101) of at least one opening (103) of a room (10) in a building. The method comprises the steps of: - obtaining a mode in which a heating control device (105) of at least one room is located, - obtaining a value of at least one parameter from the mode in which the heating control device (105) of at least one room is located, - deciding to control the shading device (101) based on the value of at least one parameter obtained, - controlling the shading device (101) according to the decision.