Affiliation:
1. Yanshan University
2. Northeastern University at Qinhuangdao
Abstract
STM32 as an embedded processor is utilized as the control unit of the handheld oscilloscope, and the data is processed by the FPGA. Voltage signal is collected by probes, and then converted into digital signal after being amplified. Digital signal is showed on the TFT screen after the FIFO processing in FPGA and digital signal processing .The dual ADCs are used to convert analog signal into digital signal so as to double sampling rate, which is an effective and economic way to improve the performance of oscilloscope. At the same time, the figure displayed on the screen can be adjusted manually and provide the information of voltage and frequency. The test results show that the oscilloscope has very good performance.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. Gregory B.A. An Introduction to Electrical Instrumentation and Measurement Systems, MACMILLAN, (1981).
2. Shakeb A. Khan1, A. K. Agarwala, D.T. Shahani. Implementation of Advance Oscilloscope Triggering Scheme on FPGA. IEEE IMTC. 2005: 407-411.
3. Wang Yuhui, Dai Ju. A new-type high-speed data sampling circuit based on FPGA and its application in flowmeter. IEEE CAR. 2010 454-457.
4. GAO Jinding, HOU Yubao, SU Long. Design of High-Speed Sampling and Adaptive Filtering System. IEEE ICICTA. 2011: 506-508.
5. Cristian Sisterna, Marcelo Segura, Martin Guzzo, Gustavo Ensinck, Carlos Gil. FPGA implementation of an ultra-high speed ADC interface. IEEE SPL. 2011: 161-166.