Delay line-based method and system thereof for merging of signal measurement channels

Abstract

The invention provides a delay line-based method for merging of signal measurement channels. The method comprises the following steps that: signals are distributed with regard to time through delay lines of different delay time, wherein the signals are at different channels and are parallel in time; the signals that are at different channels and are divided in time are superposed; the superposed signals are transmitted to a data collection unit; the data collection unit carries out digitalization processing on the superposed signals; and correction is carried out on the superposed signals that haven been processed by the digitalization. According to the invention, utilization rates of a signal channel and data processing equipment can be effectively provided and a vacancy rate of a data channel in a large-scale signal collection and processing system can be reduced, so that a price of large-scale data collection processing equipment as well as installation and maintenance difficultiesare reduced.

Description

technical field [0001] The present invention relates to the technical field of large-scale signal acquisition and processing, and more specifically, to a method and system for merging signal measurement channels based on delay lines. Background technique [0002] Large-scale signal acquisition and processing systems are widely used in high-energy physics, medicine, military and other fields. For the acquisition and processing of multi-channel data, the traditional method is that each channel corresponds to a data acquisition and processing unit, such as the multi-channel data acquisition and processing technology adopted by the detector module disclosed in the Chinese patent application with publication number CN1614443A It is traditional that each channel corresponds to a data acquisition and processing unit, and each measurement channel includes a direct converter, a pulse generator, and a counting device, but a switching unit is set between the counting device and the pul...

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Problems solved by technology

Taking PET and SPECT as examples, after each gamma photon hits the detector, output signals will be generated simultaneously on multiple adjacent PMTs, and the pulse of the signal is very narrow (about 100 nanoseconds). The counting rate is also very low (about dozens of kcps), so although a data acquisition and processing unit is set for each channel in the system, in the actual application process, more than 99% of the time data acquisition and processing units are It is in an idle state and cannot be effectively used, resulting in a waste of resources

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