Diamond Magneto-Optical Sensor With Optical Microwave Isolation
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Solution Overview
Problem
Diamond magneto-optical sensors face challenges in high-voltage power units due to the difficulty in ensuring electrical insulation and avoiding electrical breakdowns when transmitting excitation light, fluorescence, and microwaves, particularly with large antennas used for microwave transmission.
Innovation Solution
The use of nonmetallic members, such as optical fibers, for transmitting excitation light, fluorescence, and microwaves, along with a photoelectric conversion unit to convert modulated light into electric signals, allows for electrical insulation and avoids the need for large antennas, enabling flexible and unrestricted measurement environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If large antennas are used for microwave transmission in high-voltage power units, then microwave transmission capability is improved, but electrical insulation becomes difficult to ensure and electrical breakdowns occur
Solution Approach 1:
The patent introduces an optical fiber as an intermediary medium to transmit microwave signals. Instead of using traditional large antennas that require direct electrical connection, the microwave signals are converted to optical signals and transmitted through optical fibers, which provide inherent electrical insulation in high-voltage environments while maintaining signal transmission capability
Solution Approach 2:
The patent replaces the traditional electromagnetic antenna system with an optical transmission system. By converting microwave signals to optical signals for transmission and then converting them back, the system eliminates the need for large metal antennas, thereby ensuring electrical insulation while maintaining microwave transmission capability
2Productivity
If traditional metallic transmission methods are used for excitation light and microwaves, then transmission efficiency is improved, but electrical breakdowns occur in high-voltage environments
Solution Approach 1:
Optical fibers serve as intermediary transmission channels that carry both excitation light and microwave signals (converted to optical form). These non-conductive optical fibers prevent electrical breakdowns while maintaining efficient signal transmission in high-voltage power units
Solution Approach 2:
The patent creates an electrically insulating environment by using optical fibers for all signal transmissions. This inert transmission medium isolates the sensor system from the high-voltage environment, preventing electrical breakdowns while maintaining transmission efficiency
3Power
If large antennas are used for microwave transmission, then microwave irradiation capability is improved, but the measurement environment becomes restricted due to Radio Law
Solution Approach 1:
By replacing traditional antenna-based microwave transmission with optical fiber transmission, the patent eliminates the need for large antenna structures. This substitution enables measurements in previously inaccessible environments while maintaining microwave irradiation capability through optical signal conversion
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
This configuration ensures easy and safe use of diamond magneto-optical sensors in high-voltage power units by preventing electrical breakdowns and allowing measurements in any environment without Radio Law restrictions, while also extending the sensor's lifespan.
Implementation Method 1
The NV center excited at a wavelength 532 nm (that is, green light) emits fluorescence at a wavelength 637 nm (that is, red light). The radiant intensity of fluorescence changes according to a spin state.
Implementation Method 2
an irradiation unit that irradiates the diamond with electromagnetic waves for magnetic resonance, wherein the irradiation unit receives microwave wireless by a receiving antenna, and the electromagnetic waves for magnetic resonance are formed by the electric signal generated by the receiving antenna
Implementation Method 3
The spin state is changed by magnetic resonance occurring due to a magnetic field applied to the NV center and microwaves or radio waves
Data Source
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AI summary
A diamond magneto-optical sensor includes: a diamond that includes a color center with an electronic spin and is irradiated with excitation light, and an irradiatior unit that irradiates the diamond with the excitation light of the color center and electromagnetic waves for magnetic resonance, wherein the irradiation unit receives modulated light having been subjected to amplitude modulation, and a modulation frequency of the modulated light is included in a microwave frequency band.