Detector Clock Synchronization Using Phase-Shifted Reset Signals
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Solution Overview
Problem
In positron emission tomography (PET) systems, achieving precise clock synchronization among multiple detectors is challenging due to differences in transmission and detection environments, leading to unsynchronized time counters and compromised image clarity.
Innovation Solution
A system and method involving a reset signal generator that transmits preliminary reset signals with varying phases to detectors, which provide feedback data to determine an optimal reset signal phase, ensuring synchronized clock synchronization among detectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single reset signal is transmitted to multiple detectors, then the system structure is simple, but detection precision deteriorates due to unsynchronized time counters
Solution Approach 1:
The patent segments the single reset signal into multiple preliminary reset signals with different phases. Each detector receives a specific phase-shifted signal, allowing independent optimization of the reset timing for each detector's detection environment, thereby achieving precise synchronization without requiring a complex multi-signal transmission structure
Solution Approach 2:
The patent applies preliminary action by transmitting multiple preliminary reset signals with different phases before the actual detection. Each detector tests these preliminary signals to determine which phase produces the most accurate synchronization, then uses that optimal phase for the actual reset signal, ensuring precise time counter synchronization in advance
2Measurement precision
If multiple preliminary reset signals with different phases are transmitted to each detector, then clock synchronization precision is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback by having each detector test the multiple preliminary reset signals and report back which phase produced the best synchronization result. The system then uses this feedback information to select and transmit the optimal reset signal phase to each detector, achieving high precision clock synchronization while managing system complexity through intelligent signal selection
Solution Approach 2:
The patent changes the phase parameter of the reset signals to optimize synchronization. By varying the phase of preliminary reset signals and selecting the optimal phase based on detector feedback, the system achieves precise clock synchronization without requiring complex hardware modifications, instead using parameter optimization to resolve the contradiction
Data Source
AI summary
The present disclosure relates to systems and methods for clock synchronization. The system may include a reset signal generator connected with a plurality of detectors. The reset signal generator may be configured to generate a set of preliminary reset signals to be detected and transmit the set of preliminary reset signals to the plurality of detectors. Each of the set of preliminary reset signals may have a different phase. Each of the plurality of detectors may be configured to generate first feedback data for each of the set of preliminary reset signals and transmit the first feedback data to the reset signal generator. The reset signal generator may be further configured to generate, for each of the plurality of detectors, a reset signal based on the first feedback data and transmit the reset signal to each of the plurality of detectors. Each of the plurality detectors may be further configured to execute a clock synchronization in itself based on the reset signal.