Quantum Dot Radiation Detector Self-Powering Module
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Solution Overview
Problem
Existing radiation detectors for remote unmanned ground and celestial applications face challenges with battery life and mass/volume issues, making recharging or replacement impractical in these environments.
Innovation Solution
A radiation detector module incorporating a photovoltaic layer, a porous silicon quantum dot layer, and an energy storage layer, which absorbs radiation to generate electrical charge, stores it, and uses it to power a data acquisition and communication layer for remote signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a battery is used to power the radiation detector, then the detector can operate in remote locations, but the mass and volume increase and recharging/replacement becomes necessary
Solution Approach 1:
The detector uses its own radiation detection capability to generate power through the photovoltaic layer, making the system self-sufficient without external batteries. The photovoltaic layer converts detected radiation directly into electrical energy to power the detector's operations.
Solution Approach 2:
The photovoltaic layer serves dual functions: it acts as both a power generation device and a radiation detection component. This multi-functionality eliminates the need for separate battery systems, reducing mass and volume while maintaining operational capability in remote locations.
2Use of energy by moving object
If a battery is used to power the radiation detector, then the detector can operate in remote locations, but the volume increases and recharging/replacement becomes necessary
Solution Approach 1:
The detector uses its own radiation detection capability to generate power through the photovoltaic layer, making the system self-sufficient without external batteries. The photovoltaic layer converts detected radiation directly into electrical energy to power the detector's operations.
Solution Approach 2:
The photovoltaic layer serves dual functions: it acts as both a power generation device and a radiation detection component. This multi-functionality eliminates the need for separate battery systems, reducing mass and volume while maintaining operational capability in remote locations.
3Reliability
If conventional radiation detectors are used, then detection functionality is provided, but power management complexity increases due to battery requirements
Solution Approach 1:
The detector uses its own radiation detection capability to generate power through the photovoltaic layer, making the system self-sufficient without external batteries. The photovoltaic layer converts detected radiation directly into electrical energy to power the detector's operations.
Solution Approach 2:
The photovoltaic layer serves dual functions: it acts as both a power generation device and a radiation detection component. This multi-functionality eliminates the need for separate battery systems, reducing mass and volume while maintaining operational capability in remote locations.
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
Enables self-sustaining, low-power, and compact radiation detection and reporting in remote locations without the need for battery recharging or replacement, suitable for unmanned ground and outer space applications.
Implementation Method 1
a photovoltaic layer with first and second opposing sides. The photovoltaic layer is configured to absorb first radiation at the first side and produce electrical charge
Implementation Method 2
a porous silicon quantum dot layer disposed at the second side of the photovoltaic layer and configured to receive second radiation, and then convert the received second radiation into an electrical signal indicative of an energy level of the received second radiation
Data Source
Figure 1~2
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AI summary
A radiation detector (100) includes a photovoltaic layer (102) with first and second opposing sides. The photovoltaic layer is configured to absorb first radiation at the first side and produce electrical charge. The detector further includes a porous silicon quantum dot layer (104) disposed at the second side of the photovoltaic layer and configured to receive second radiation and convert the received second radiation into an electrical signal indicative of an energy level of the received second radiation. The detector further includes an acquisition and communication layer (106) disposed adjacent to the porous silicon quantum dot layer and configured to receive the electrical signal and transmit the electrical signal to a device remote from the radiation detector. The detector further includes an energy storage layer (108) disposed adjacent to the acquisition and communication layer and configured to store the electrical charge and supply the stored electrical charge as operating power to the acquisition and communication layer.