Laser Remote Control Switching System Using Nanofiber Actuators
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Solution Overview
Problem
Current remote control systems, particularly wireless and infrared devices, face limitations such as interference, short range, and complex circuit structures, which hinder effective and reliable control over electronic devices.
Innovation Solution
A nanofiber actuator system comprising a carbon nanotube wire coated with an aluminum oxide layer and a vanadium dioxide layer, arranged non-coaxially, which exhibits bidirectional actuation due to thermal mismatch, allowing for large displacement and fast response, is used in a laser remote control switching system to simplify the control circuit and enhance reliability by eliminating the need for demodulation and amplification circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If wireless remote control devices are used, then control distance is long, but interference with other devices and electrical appliances occurs
Solution Approach 1:
The patent replaces the electrical wireless remote control system with a laser-based optical system. The laser beam serves as the control signal carrier, eliminating electromagnetic interference with other electrical devices while maintaining long control distance capability. The laser pointer directly points to the target device, and the laser beam itself carries the control information without requiring complex modulation and demodulation circuits.
Solution Approach 2:
The patent introduces a laser beam as an intermediary between the controller and the controlled device. This optical intermediary transmits control signals through direct line-of-sight propagation, avoiding electromagnetic spectrum congestion and interference issues that plague wireless radio frequency systems. The laser beam acts as a clean, dedicated communication channel.
2Length of stationary object
If wireless remote control devices are used, then control distance is long, but circuit structure becomes more complicated
Solution Approach 1:
The patent replaces complex electrical modulation and demodulation circuits with a simple optical system. The controller only needs to generate and emit a laser beam, while the controlled device uses a photosensitive element to detect the laser presence. This eliminates the need for complex RF modulation, demodulation, and amplification circuits, dramatically simplifying the overall system architecture.
Solution Approach 2:
The patent extracts and removes the complex modulation and demodulation circuitry from the remote control system. By using direct laser beam detection without signal modulation, the system eliminates entire subsystems including modulators, demodulators, and associated amplification circuits, retaining only the essential laser source and photosensitive detector.
3Object-affected harmful factors
If infrared remote control devices are used, then interference is reduced, but control distance becomes small
Solution Approach 1:
The patent changes the fundamental parameter of the control signal from infrared wavelength to laser wavelength. This parameter change enables longer control distances because laser beams have higher directionality and lower divergence compared to infrared radiation. The laser's coherent light properties allow the beam to maintain intensity over longer distances, extending the effective control range beyond typical infrared remote control limitations.
Solution Approach 2:
The patent exploits the asymmetric properties of laser radiation compared to conventional infrared emission. Laser beams exhibit highly directional propagation with minimal spreading, whereas infrared radiation disperses in all directions. This asymmetry in beam propagation characteristics allows the laser system to achieve both low interference (through directionality) and long control distance simultaneously.
4Object-affected harmful factors
If infrared remote control devices are used, then interference is reduced, but circuit structure becomes more complicated
Solution Approach 1:
The patent replaces infrared modulation circuits with a simple laser emission system. Instead of modulating infrared LED signals, the system uses a laser diode that directly emits controlled laser beams. The controlled device detects laser presence through a photosensitive element, eliminating the need for infrared demodulation and amplification circuits while maintaining low interference characteristics.
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 nanofiber actuator system provides a reliable, interference-resistant, and cost-effective means for remote control, with a simple control circuit structure, enabling efficient and sensitive control of electronic devices without interference, leveraging the bidirectional actuation and fast response of the nanofiber actuators.
Implementation Method 1
the nanofiber actuator system comprises a carbon nanotube wire coated with an aluminum oxide layer and a vanadium dioxide layer
Implementation Method 2
a vanadium dioxide layer (14) coated on a surface of the composite structure (12)
Implementation Method 3
arranged non-coaxially, which exhibits bidirectional actuation due to thermal mismatch
Data Source
AI summary
A laser remote control switching system comprises a laser source and a control circuit. The control circuit comprises a power, an electronic device, a first electrode, a second electrode, and a photosensitive element electrically connected in sequence to form a loop. Each of the two nanofiber actuators comprises a composite structure and a vanadium dioxide layer. The composite structure comprises a carbon nanotube wire and an aluminum oxide layer. The aluminum oxide layer is coated on a surface of the carbon nanotube wire, and the aluminum oxide layer and the carbon nanotube wire are located coaxially with each other. The vanadium dioxide layer is coated on a surface of the composite structure, and the vanadium dioxide layer and the composite structure are located non-coaxially with each other.