Key design techniques of oscilloscope based on ARM and FPGA

100V, 250mA, surface mount, high speed switching diode

Filter 18.432M

Probe domestic switch needle KG300B head diameter 3.0 normally closed switch needle total length is 5

Summary:

The embedded system ARM and single-chip microcomputer are used as the microprocessor group, the FPGA is used as the digital carrier, the instrument PC communication interface and the human-machine dialogue are realized by USB and DELPHI, the LCD realizes the instrument intelligent mode interface, and the data sampling is completed by means of MC12429, ADC9288, ADS1211, etc. Design a dual-channel analog multi-function digital storage oscilloscope with analog bandwidth of DC ~ 100MHz and integrated with a dual-channel universal counter and a 5-digit half-digital multimeter. Experiments show that the design is effective, the article is discussing the system At the same time, the design focuses on key technology design schemes such as data sampling, FPGA, USB and LCD interface.

Overall design block diagram

FPGA digital and control platform structure

Oscillographic data sampling circuit

See the uploading documentation for details (click to download)