Radiation Detector Readout Module Power Control
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Solution Overview
Problem
Radiation detectors utilizing integrated panel sensors consume excessive power due to the constant active state of readout modules, leading to shorter battery life in portable devices.
Innovation Solution
A radiation detector with a matrix of pixels connected to gate and data lines, featuring a readout module that switches between active and inactive modes based on charge levels, minimizing power consumption by activating only necessary readout integrated circuits for exposure detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the readout module is kept in active state to continuously monitor charges in the panel, then radiation exposure detection is reliable, but power consumption increases significantly
Solution Approach 1:
The readout module operates in periodic cycles, switching between active and inactive states. During active periods, it reads charges from the panel to detect radiation exposure. During inactive periods, it remains dormant to conserve power. This periodic operation maintains detection reliability while significantly reducing average power consumption compared to continuous operation.
Solution Approach 2:
The system dynamically adjusts the operational state of the readout module based on detection needs. The module transitions between active and inactive states according to predetermined periods and exposure detection requirements, optimizing the balance between reliability and power consumption rather than maintaining a fixed state.
2Measurement precision
If the readout module operates continuously in active mode, then charge reading accuracy is maintained, but battery life is reduced
Solution Approach 1:
The readout module performs charge reading operations at predetermined periodic intervals rather than continuously. This periodic operation maintains measurement precision by regularly updating charge levels while extending battery life by minimizing the duration of high-power active operation.
3Use of energy by moving object
If the readout module is activated only when needed, then power consumption is reduced, but radiation exposure detection may be delayed
Solution Approach 1:
The system performs preliminary charge reading operations at predetermined intervals even during inactive periods. This preliminary action ensures that when the readout module transitions to active mode, it can immediately detect radiation exposure without significant delay, balancing power savings with timely detection.
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 approach significantly reduces power consumption by controlling the readout module's power supply and sensing period, extending the operational time of portable radiation detectors.
Implementation Method 1
a radiation detection unit including a plurality of pixels arranged in a matrix form connected to a plurality of gate lines and a plurality of data lines crossing each other, and configured to store, in the plurality of pixels, charges generated in proportion to radiation dose
Data Source
AI summary
A radiation detector, which can reduce power consumption of a read-out module, comprises: a radiation detection unit which includes a plurality of pixels connected to a plurality of gate lines and a plurality of data lines that intersect and arranged in a matrix form, and which store, in the plurality of pixels, charges generated in proportion to radiation dosage; a gate module for selecting at least one of the plurality of gate lines and controlling the selected gate line; the read-out module for selecting at least one of the plurality of data lines, and reading charges stored in at least one exposure detection pixel determined by the selected data line and the selected gate line; and an automatic exposure detection unit for determining whether the radiation detection unit is exposed to radiation by using a charge quantity read by the read-out module from the exposure detection pixel in every preset period.