Design of Digital Storage Oscilloscope Based on FPGA

2013 ◽  
Vol 333-335 ◽  
pp. 2323-2326
Author(s):  
Min Li Yu ◽  
Yan Jun Bi ◽  
Hong Xiu Meng
Keyword(s):  
Embedded System ◽  
Automatic Gain Control ◽  
Frequency Control ◽  
Gain Control ◽  
Control Unit ◽  
Automatic Frequency ◽  
Storage Oscilloscope ◽  
Digital Oscilloscope ◽  
Digital Storage ◽  
Digital Storage Oscilloscope

A kind of portable digital storage oscilloscope (DSO) is developed in this paper. It builds trigger, storage, measurement module for embedded system with programmable logic resource of FPGA chip. The external digital circuits of a digital oscilloscope is achieved. And it saves a lot of cost by implanting NIOS II soft-core processor as the control unit of the system in the FPGA. This system has the function of automatic frequency control (AFC) and automatic gain control (AGC), and it can measure the signal conveniently.

The Design and Implementation of Virtual Digital Oscilloscope

2014 ◽  
Vol 898 ◽  
pp. 883-886 ◽  
Author(s):  
Ai Ling Qu ◽  
Hong Mei Liu ◽  
Yan Ling Lv ◽  
Ru Kun Han ◽  
Qiu Yan Liang
Keyword(s):  
Data Storage ◽  
Virtual Instrument ◽  
Automatic Measurement ◽  
Storage Oscilloscope ◽  
Digital Oscilloscope ◽  
Overall Design ◽  
Digital Storage ◽  
Digital Storage Oscilloscope ◽  
Computer Based ◽  
Design Ideas

The virtual instrument is the computer-based instrument. The close integration between computer and instrument is one important instrument development direction. The virtual digital storage oscilloscope introduced in the paper has some additional functions except the common oscilloscope functions, its additional functions are spectral analysis, parameter automatic measurement, complex conditions trigger and data storage. The virtual digital storage oscilloscope communicates with the PC software through USB port. The paper discusses the overall design ideas of virtual digital storage oscilloscope, and the composition and functions of the circuits.

Design of PXI Digital Storage Oscilloscope Module Based on FPGA

2014 ◽  
Vol 602-605 ◽  
pp. 2671-2674
Author(s):  
Lei Qiu ◽  
Dao Ju Duan ◽  
Xiao Zhou ◽  
Rong Yue Xie
Keyword(s):  
High Speed ◽  
Control Unit ◽  
Data Access ◽  
Test System ◽  
Storage Oscilloscope ◽  
Digital Storage ◽  
High Speed Adc ◽  
Digital Storage Oscilloscope ◽  
Field Programmable ◽  
High Speed Data

A digital storage oscilloscope module in automatic test equipment was designed based on PIX bus. The field programmable gate array (FPGA) is used as the logic control unit. The circuit of high speed ADC and FPGA interface, clock management, and high speed data access were designed based on hardware modules. The digital storage oscilloscope module was successfully applied to the practical test system, whose performance was good, stable, and achieved the desired design goals.

scholarly journals Information Entropy- and Average-Based High-Resolution Digital Storage Oscilloscope

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Jun Jiang ◽  
Lianping Guo ◽  
Kuojun Yang ◽  
Huiqing Pan
Keyword(s):  
Data Fusion ◽  
Information Entropy ◽  
Signal To Noise Ratio ◽  
Sampling Rate ◽  
Storage Oscilloscope ◽  
Whole Process ◽  
Digital Storage ◽  
Gross Error ◽  
Digital Storage Oscilloscope ◽  
Sample Data

Vertical resolution is an essential indicator of digital storage oscilloscope (DSO) and the key to improving resolution is to increase digitalizing bits and lower noise. Averaging is a typical method to improve signal to noise ratio (SNR) and the effective number of bits (ENOB). The existing averaging algorithm is apt to be restricted by the repetitiveness of signal and be influenced by gross error in quantization, and therefore its effect on restricting noise and improving resolution is limited. An information entropy-based data fusion and average-based decimation filtering algorithm, proceeding from improving average algorithm and in combination with relevant theories of information entropy, are proposed in this paper to improve the resolution of oscilloscope. For single acquiring signal, resolution is improved through eliminating gross error in quantization by utilizing the maximum entropy of sample data with further noise filtering via average-based decimation after data fusion of efficient sample data under the premise of oversampling. No subjective assumptions and constraints are added to the signal under test in the whole process without any impact on the analog bandwidth of oscilloscope under actual sampling rate.

scholarly journals Detection of Skin Cancer using Optical Method

2019 ◽  
Vol 9 (2S2) ◽  
pp. 933-936
Keyword(s):  
Skin Cancer ◽  
Optical Method ◽  
Cancer Tissue ◽  
Storage Oscilloscope ◽  
Hazardous Chemical ◽  
Digital Storage ◽  
Nir Light ◽  
Skin Cancers ◽  
Digital Storage Oscilloscope ◽  
The One

Skin is the one of the most important organ present in our body that does some of the important functions like protection, temperature regulation etc. Due to some conditions, skin is affected by many abnormalities. The abnormalities may be smaller or larger, which depends on the damage caused to the skin. Some abnormalities of skin are irritations, allergic reactions, swelling etc. One of the most major problems that affect the skin completely is of skin cancer. Skin cancer is the most common type of cancer that affects the 40% of people in all over world. It may be caused due to several factors like genetic, working in hazardous chemical areas, exposure to sun, repeated X-ray exposures etc. All of these factors affects the skin and causes skin cancer. Skin biopsy is a major technique used at present to detect all types of skin cancers. As this biopsy method is invasive, and takes more time to check the cancer tissue, we are using this optical method for detection of skin cancer. Optical imaging is the upcoming technology that plays the major role in all fields. In this method Near Infra-Red (NIR) light source is passed into the affected skin region. The transimpedance amplifier is used to amplify the output from photodiodes. Then the output from the photodiodes is connected to the Digital Storage Oscilloscope (DSO) in which the waveform shows the variations due to skin cancer.

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