Frequency Selective Surface Lighting Device for Smart City Integration
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Solution Overview
Problem
The limited design space in street light devices makes it difficult to accommodate Internet-related components, hindering the integration of communication functions necessary for smart city infrastructure.
Innovation Solution
A lighting device incorporating a frequency selective surface, a control circuit board, and light-emitting diodes, where the frequency selective surface covers specific operation frequencies (e.g., 28 GHz, 39 GHz, or 60 GHz) and includes strategically designed metal pieces and antennas to enable communication functions while maintaining a compact form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Internet-related components are added to street light devices to enable communication functions, then communication capability is improved, but device complexity and design space requirements increase
Solution Approach 1:
The patent combines the antenna structure with the frequency selective surface (FSS) structure into a single integrated component. The FSS serves dual purposes: as a communication antenna element and as an electromagnetic wave filtering surface. This merging eliminates the need for separate antenna components, reducing device complexity while maintaining communication functionality.
Solution Approach 2:
The frequency selective surface is designed to perform multiple functions simultaneously: it acts as an antenna radiating element for communication, provides electromagnetic wave filtering at specific frequencies, and serves as a structural component of the street light device. This multi-functionality allows the device to achieve communication capability without proportionally increasing complexity.
2Adaptability or versatility
If Internet-related components are added to street light devices to enable communication functions, then communication capability is improved, but the available design space is exceeded
Solution Approach 1:
By merging the antenna and FSS into a single integrated structure, the patent eliminates the need for separate antenna space. The communication function is achieved within the existing FSS footprint, avoiding additional design space requirements that would result from adding separate Internet-related components.
Solution Approach 2:
The patent utilizes the two-dimensional surface of the FSS to create a functional antenna structure. Instead of adding components in the third dimension (vertical stacking), the communication functionality is embedded within the planar FSS structure, efficiently utilizing the available design space without increasing the device's overall footprint.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for efficient communication integration in a compact lighting device, enhancing its suitability for smart city applications with improved antenna gain and aesthetic appeal.
Implementation Method 1
The frequency selective surface includes at least one first metal piece. The first metal piece has an opening. The light-emitting diode is disposed on the control circuit board. The light-emitting diode is substantially aligned with the opening of the first metal piece.
Implementation Method 2
at least one light-emitting diode. The light-emitting diode is disposed on the control circuit board.
Data Source
AI summary
A lighting device with a communication function includes a frequency selective surface, a control circuit board, and at least one light-emitting diode. The frequency selective surface includes at least one first metal piece. The first metal piece has an opening. The light-emitting diode is disposed on the control circuit board. The light-emitting diode is substantially aligned with the opening of the first metal piece.