Engineering ct wireless distributed multi-channel adc high-precision synchronization system and method

Abstract

The invention provides an engineering CT wireless distributed multi-channel ADC high-precision synchronization system and method. The engineering CT wireless distributed multi-channel ADC high-precision synchronization system comprises a main station, a trigger station and a plurality of collection stations. Wherein the master station, the trigger station and the acquisition stations are in wireless communication in a 433MHz wireless real-time communication mode, so that time synchronization between the trigger station and the acquisition stations is realized; The trigger station and each acquisition station have the same internal structure, and each acquisition station comprises an MCU processor, a first active crystal oscillator, a frequency divider, a counter, a second active crystal oscillator, an ADC cache unit, a communication interruption processing unit and a wireless communication module. The method has the advantages that through innovative designs of wireless time synchronization, wireless synchronous triggering, advanced pre-sampling and the like, microsecond-level error synchronous sampling of a plurality of sensors can be realized, and the method is very suitable fora scene in which the sensors are distributed in a large area or a large area.

Description

technical field [0001] The invention belongs to the technical field of non-destructive detection of integral pouring quality of concrete, and in particular relates to an engineering CT wireless distributed multi-channel ADC high-precision synchronization system and method. Background technique [0002] In many engineering application fields and scientific research, it is often necessary to perform synchronous sampling and analysis of multiple sensor signals to ensure the time synchronization of multiple sensor signal sampling, which is very important for subsequent sampling and analysis. When these sensors are distributed in a small area or integrated in an acquisition probe, such as medical CT instrument, ultrasonic imager, multi-beam imaging sonar, etc., multi-channel sensor synchronization is often achieved through hardware clock signal synchronization, synchronous triggering, etc. sampling. However, when the sensors are distributed in a large or large area, such as grid...

AI Technical Summary

Problems solved by technology

However, when the sensors are distributed in a large or large area, such as grid smart stations, engineering CT instruments based on wave velocity distribution, geological detectors based on seismic waves, etc., how to effectively ensure the simultaneous sampling of multiple sensor signals is a thorny issue. There is currently no effective solution

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