Lightning strike special digital storage oscilloscope and its measurement method

Abstract

The invention provides a lightning-stroke special digital storage oscilloscope (DSO) and a measuring method thereof. The lightning-stroke special DSO comprises: a signal conditioning and trigger signal generation circuit, a temporal distribution circuit, a sampling hold circuit, an ADC single chip microcomputer circuit, a master-control single chip microcomputer circuit, a power supply circuit, a display interface unit and a computer-communication serial port. The signal conditioning and trigger signal generation circuit, the sampling hold circuit and the ADC single chip microcomputer circuit are successively connected. The temporal distribution circuit is respectively connected with sampling hold circuit and the ADC single chip microcomputer circuit. The master-control single chip microcomputer circuit is respectively connected with the signal conditioning and trigger signal generation circuit, the ADC single chip microcomputer circuit and the power supply circuit. The computer-communication serial port is connected with the master-control single chip microcomputer circuit. The signal conditioning and trigger signal generation circuit is connected with a signal terminal of an external lightning stroke current signal input socket. The display interface unit is connected with the master-control single chip microcomputer circuit and is externally connected with a display. By using the lightning-stroke special DSO, a special requirement of collecting lightning stroke current waveforms can be satisfied.

Description

technical field [0001] The invention relates to the technical field of oscilloscopes, in particular to a special digital storage oscilloscope for lightning strikes and a measurement method thereof. Background technique [0002] Due to the incomparable advantages of analog oscilloscopes, DSO (digital storage oscilloscope) has developed rapidly in recent years. Digital storage oscilloscope is one of the commonly used instruments for electronic signal measurement. It is widely used in various industries such as machinery, electronics, military and scientific research and teaching. Existing general-purpose digital storage oscilloscopes are expensive and complex in design, and are mostly used for high-speed acquisition and analysis of regular periodic waveforms. In terms of technical implementation, large-scale field programmable gate array logic devices FPGA, FIFO first-in-first-out memory, and DMA controllers are often used. , high-speed analog-to-digital A / D converter (abbrev...

AI Technical Summary

Problems solved by technology

The thousands of meteorological stations established by my country's meteorological departments have lightning observation records in recent decades, but most of these records lack quantitative

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