Design and Realization of Resolution Detection System for AD7730

2012 ◽  
Vol 241-244 ◽  
pp. 190-193
Author(s):  
Xiao Ming Chang ◽  
Bin Sun ◽  
Shi Xuan Yao
Keyword(s):  
Instrument Development ◽  
High Precision ◽  
Virtual Instrument ◽  
Detection System ◽  
Performance Parameter ◽  
Analog Signal ◽  
Sampling System ◽  
Development Environment ◽  
Signal Sampling ◽  
Application System

Before using high-precision ADC AD7730 in analog signal sampling system, it’s required to measure the actual resolution if needed. This paper introduces the design of resolution detection system for ADC, which is used to evaluate the resolution performance parameter of ADC. First, a framework of the application system is designed, and specified at the example of 24bit ADC AD7730 application based on the Virtual Instrument Development Environment LabVIEW. Finally, actual resolutions of input channels are given and evaluated.

scholarly journals Design of photoacoustic microscope system based on labVIEW platform

2020 ◽  
Vol 309 ◽  
pp. 04016
Author(s):  
Yang Bai ◽  
Chuncheng Zhang ◽  
Lvming Zeng ◽  
Guodong Liu
Keyword(s):  
Instrument Development ◽  
Virtual Instrument ◽  
Imaging Technique ◽  
Reconstruction Algorithms ◽  
Development Environment ◽  
Digital Oscilloscope ◽  
Non Invasive ◽  
Labview Platform ◽  
Hardware Platforms ◽  
Image Reconstruction Algorithms

A photoacoustic microscope system based on virtual instrument development environment is presented, including ultrasonic sensor, digital oscilloscope, laser diode, personal calculation and other hardware platforms. and developed supporting software and image reconstruction algorithms. In the subcutaneous angiography experiment, the distribution characteristics of the ear blood vessels in mouse were completely reproduced perfectly, and the spatial resolution of the system can reach 14um. The system and method can potentially to develop into a non-invasive biological tissue structure and functional imaging technique.

scholarly journals The Design and Implementation of Photoelectric Sensor for Yarn Color Fault Detection

2016 ◽  
Vol 12 (02) ◽  
pp. 5
Author(s):  
Fenhua Sheng ◽  
Zujue Chen
Keyword(s):  
Fault Detection ◽  
Virtual Instrument ◽  
Detection System ◽  
Measurement Technology ◽  
Textile Production ◽  
Amplifier Circuit ◽  
Photoelectric Sensor ◽  
Driver Circuit ◽  
Yarn Production ◽  
Different Color

The paper mainly aimed at solving the problem of yarn color fault detection. Yarn with different color is hard to detect in yarn production, a special photoelectric sensor is designed in this paper. First, this paper analyzed the requirement of light source and photoelectric receiver in the photoelectric sensor, and designs the light path and driver circuit. Then this paper analyzed the amplifier circuit and noise in the photoelectric sensor, with an amplifier circuit of minimal noise proposed at last. Finally, this paper tested the yarn color fault detection system with virtual instrument, and the test results showed a great application prospect of the photoelectric sensor. Photoelectric yarn clearer was the first type of electronic yarn clearer, but due to the under development of the optical technology and measurement technology, the photoelectric yarn cleaner can't meet the requirements of textile production, gradually replaced by capacitive yarn cleaner. Though photoelectric yarn cleaner had a good visual conformity degree, it’s still a unreplaceable method in colored yarn faults

Development of laser-based application system with high precision and speed

2012 ◽  
Author(s):  
Kwang-hyun Ryu ◽  
Suk-hoon Shin ◽  
Hyeong-chan Park ◽  
Tae-sang Hwang
Keyword(s):  
High Precision ◽  
Application System

scholarly journals An Improved Partial Discharge Detection System Based on UV Pulses Detection

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4767
Author(s):  
Zeliang Shen ◽  
Jingang Wang ◽  
Gang Wei
Keyword(s):  
High Precision ◽  
Reliable Method ◽  
Pulse Current ◽  
Detection System ◽  
Partial Discharge ◽  
Current Method ◽  
Pulse Method ◽  
Early Discharge ◽  
Effective Distance ◽  
Pulse Detection

Partial discharge (PD) usually reflects failures and potential hazards of equipment, so PD detection is important to protect the power system. The most reliable method now is the pulse current method (PCM), but the device of PCM is large and hard to carry. Ultraviolet (UV) pulse detection is another method to detect PD, which has a high precision, strong anti-interference ability, and a long effective distance. However, the existing detection system does not work well when the PD is weak and can hardly reflect the hidden trouble of equipment. This paper introduces an improved PD detection system, based on the UV Pulse Method, which is of high precision and can reflect early discharge. In this study, a corresponding detection device was also built. This device is handheld, non-contact, easy to use, and of high precision.

scholarly journals Atmospheric Fossil Fuel CO2 Measurement Using a Field Unit in a Central European City During the Winter of 2008/09

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 835-845 ◽  
Author(s):  
M Molnár ◽  
L Haszpra ◽  
É Svingor ◽  
I Major ◽  
I Svetlik
Keyword(s):  
High Precision ◽  
Fossil Fuel ◽  
Rural Site ◽  
Mixing Ratio ◽  
European City ◽  
Sampling System ◽  
Central European ◽  
Mixing Ratios ◽  
Clean Air ◽  
Field Unit

A high-precision atmospheric CO2 monitoring station was developed as a field unit. Within this, an integrating CO2 sampling system was applied to collect samples for radiocarbon measurements. One sampler was installed in the second largest city of Hungary (Debrecen station) and 2 independent 14CO2 sampling lines were installed ∼300 km from Debrecen in a rural site at Hegyhátsál station as independent background references, where high-precision atmospheric CO2 mixing ratios have been measured since 1994. Fossil fuel CO2 content in the air of the large Hungarian city of Debrecen was determined during the winter of 2008 using both the measurements of CO2 mixing ratio and 14C content of air. Fossil fuel CO2 was significantly enhanced at Debrecen relative to the clean-air site at Hegyhátsál.

A Portable Environmental Detection System Based on Multi-Parameter Integration and Virtual Instrument

2017 ◽  
Vol 868 ◽  
pp. 357-362
Author(s):  
Xiao Hui Du ◽  
Yuan Hui Liu ◽  
Xiong Feng Wu ◽  
Chao Ping Yang ◽  
Qing Yuan Zhu
Keyword(s):  
Virtual Instrument ◽  
Detection System ◽  
Structure Design ◽  
Outdoor Environment ◽  
Analysis Tool ◽  
Evaluation Systems ◽  
Related Information ◽  
Function Modules ◽  
Instrument Technology ◽  
Information Detection

To realize rapid detection and evaluation of environmental-related information of the outdoor environment, this paper presents a portable environmental information detection system based on multi-sensor integration, wireless communication technology and virtual instrument technology. It can realize real-time detecting and evaluating parameters of air, acoustic, water and soil. Meanwhile, it is also able to record the longitude and latitude value, map and pictures of the location that data acquired. Moreover, modular structure design is adopted in the system, so the data processing modular can be applied in other evaluation systems as an analysis tool. Also, new function modules can also be added in the system to meet the needs of more features.

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