Detector Signal Digitization Without Clock Noise
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Solution Overview
Problem
Existing methods for processing detector signals, particularly in applications like X-ray fluorescence, suffer from noise interference due to the need for clock signals during digitization, especially when few detection events occur, leading to poor signal-to-noise ratios.
Innovation Solution
A method that processes detector signals by digitizing and binning them in regions of interest without using a clock signal during the digitization step, allowing for closer integration of digitization to the detector unit, and transferring count data only for specific regions of interest during a separate transferring step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clock signal is used during digitization of detector signals, then the digitization process can be synchronized and controlled, but noise interference increases and signal-to-noise ratio deteriorates
Solution Approach 1:
The patent extracts and removes the clock signal from the digitization process. The detector unit processes signals and generates digital output data without requiring a clock signal during digitization, thereby eliminating the noise interference that the clock signal introduces while preserving detection reliability
Solution Approach 2:
The patent introduces an intermediary approach where the detector unit itself performs digitization locally without external clock synchronization. This intermediate processing stage converts analog detector signals to digital data independently, then transfers only the essential digital output data to the control unit, avoiding direct clock signal interference
2Loss of information
If all detector signal data is transferred to the control unit, then complete signal information is available for processing, but data processing time increases and efficiency decreases
Solution Approach 1:
The patent extracts only the essential digital output data from the detector unit and transfers only this processed information to the control unit, rather than transferring all raw detector signals. This extraction approach maintains the necessary signal information for analysis while significantly reducing data volume and processing time
Solution Approach 2:
The detector unit performs preliminary digitization and data processing locally before transfer to the control unit. By preparing the data in advance at the source, the system reduces the processing burden on the control unit and accelerates overall system productivity while preserving essential signal information
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 reduces noise and improves signal processing robustness while reducing the amount of data to be processed, making it more efficient and faster, especially in applications where only specific photon energies are of interest.
Implementation Method 1
the detector is configured to detect electromagnetic radiation, preferably X-rays
Data Source
AI summary
Embodiments provide a method for processing a detector signal, which comprises a sequence of signal peaks. The method comprises a digitization step and a transferring step. In the digitization step, the detector signal is processed and binned in at least one region of interest depending on an area of the signal peaks. At least one number of counts is determined by a counter in the digitization step, wherein the number of counts corresponds to the number of signal peaks in the region of interest. In the transferring step, the number of counts is provided as an output signal. During the digitization step, the method is free of a clock signal.