High-speed high-resolution digital acquisition device and processing method of controllable triggering period signal

Abstract

The invention discloses a high-speed high-resolution digital acquisition device and a processing method of a controllable triggering period signal. The high-speed high-resolution digital acquisition device is characterized in that 1+N analogue-to-digital converters are arranged in the high-speed high-resolution digital acquisition device, and the input end of each analogue-to-digital converter is provided with a time delayer in a connecting manner, thus 1+N time delayers corresponding to the 1+N analogue-to-digital converters are arranged in the high-speed high-resolution digital acquisition device, wherein the output end of each analogue-to-digital converter is connected with the input end of a large programmable logic device. The invention has the advantages that: an AD (Analog-to-Digital) acquisition control and pre-processing unit consisting of an FPGA (Field Programmable Gate Array) and multiple paths of AD converters are utilized, thus the sampling time resolution of high-speed digital acquisition is largely increased, and the high-speed high-resolution digital acquisition processing method of the controllable triggering period signal, disclosed by the invention, has remarkable substantial characteristics and remarkable improvement compared with the prior art.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a high-speed and high-resolution digital collector capable of triggering periodic signals under control and a processing method thereof, in particular to its internal electrical connection structure. Background technique [0002] With the rapid development of electronic devices and the maturity of computer bus technology, the sampling rate of data acquisition has been developed rapidly, and the current A / D sampling rate has reached 10GS / s. In recent years, due to the development of high-speed digital technology, the A / D sampling rate has been greatly improved, which greatly improves the spatial resolution and acquisition accuracy of the system. [0003] In the distributed optical fiber sensing system, spatial resolution is a very important parameter. The distributed optical fiber sensing system performs digital sampling processing on the waveform signal of the optic...

AI Technical Summary

Problems solved by technology

It is suitable for periodic repetitive signals, and can achieve high time resolution by using time-interval double-slope amplification measurement technology. The main disadvantage of this method is that the sampling time of the entire waveform is long, and it is fast compared with the distributed optical fiber sensing system. The characteristic requirements of real-time measurement are contradictory, and the circuit is relatively complicated

Images