LED Lighting With OFDM RF Modules for Wireless Control
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Solution Overview
Problem
Existing lighting devices lack flexibility in installation and functionality, particularly in terms of connectivity and control, limiting their ability to enhance user experience and integration with other electronic devices.
Innovation Solution
A lighting apparatus incorporating LED modules, a power module, a controller, a data input module, an OFDM modulation module, an RF upconversion module, and an antenna module, enabling wireless communication and data sharing with other devices, along with features like PWM control for dynamic lighting effects and integration with sensors or cameras.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional lighting devices are used, then the device structure is simple, but the connectivity and control flexibility are limited
Solution Approach 1:
The patent combines multiple functional modules (controller, OFDM modulation module, RF upconversion module, antenna module, sensors, cameras) into a single integrated lighting device. This merging approach enables the lighting apparatus to perform both illumination and wireless communication functions simultaneously, resolving the contradiction by achieving high adaptability while managing device complexity through modular integration.
Solution Approach 2:
The lighting device is designed with multi-functionality, serving as both a light source and a wireless communication node. The apparatus can provide illumination while simultaneously enabling data transmission, sensor monitoring, and device-to-device communication through OFDM and RF modules, thus achieving versatility without proportionally increasing structural complexity.
2Adaptability or versatility
If wireless communication modules are added to lighting devices, then the connectivity is improved, but the device complexity increases
Solution Approach 1:
The wireless communication functionality is segmented into distinct modular components: OFDM modulation module, RF upconversion module, and antenna module. Each module performs a specific function in the signal processing chain, allowing for independent optimization and simplified integration into the lighting device while maintaining low overall complexity.
Solution Approach 2:
The controller serves as an intermediary that coordinates between the LED light source and the wireless communication modules. It manages the interaction between illumination control and data transmission functions, enabling seamless operation of multiple subsystems without requiring complex direct interconnections between all components.
3Adaptability or versatility
If multiple functional modules are integrated, then the functionality is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent employs preliminary action by pre-integrating the wireless communication modules and controlling circuits into the lighting device during manufacturing. The OFDM modulation module, RF upconversion module, and antenna are assembled together as a integrated communication subsystem before final device assembly, simplifying the manufacturing process and reducing the complexity of integrating multiple separate components later.
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
Enhances user control over lighting parameters, facilitates seamless integration with electronic devices, and provides dynamic lighting effects while optimizing energy consumption and system performance.
Implementation Method 1
The light source includes multiple types of LED modules
Implementation Method 2
The power module converts an AC power to a DC power
Implementation Method 3
The antenna module includes multiple antennas configured to transmit RF signals
Data Source
AI summary
A lighting apparatus includes a light source, a power module, a controller, a data input module, a serial-to-parallel converter module, an orthogonal frequency division multiplexing (OFDM) modulation module, a radio frequency (RF) upconversion module and an antenna module. The light source including multiple types of LED modules. The controller generates multiple driving currents supplied to the LED modules. The data input module is coupled to the controller. The data input module receives input data to be transmitted. The serial-to-parallel converter module converts the input data into multiple parallel data streams. The orthogonal frequency division multiplexing (OFDM) modulation module modulates the parallel data streams onto multiple orthogonal subcarriers. The antenna module includes multiple antennas configured to transmit RF signals corresponding to the multiple data streams.