Laser Speckle Detection System for Seed Viability Assessment

2014 ◽  
Vol 556-562 ◽  
pp. 3156-3159 ◽  
Author(s):  
Sen Men ◽  
Lei Yan ◽  
Hua Qian ◽  
Na Li ◽  
Jian Ping Yao
Keyword(s):  
Detection System ◽  
Seed Viability ◽  
Laser Speckle ◽  
Viability Assessment ◽  
Optical Phenomenon ◽  
Dynamic Speckle ◽  
Working Principle ◽  
Speckle Detection

This work presents a new detection system for seed viability assessment. The theoretical of the system is based on laser speckle or dynamic speckle, an optical phenomenon produced by interference of light. In the present work, the detection of a single in a period of time is been concentrate. The various parts and working principle of the laser speckle detection system explain detailed and the feasibility of this system is experiment in this paper. The result shows that this system is available in this field, and it can support the further study.

scholarly journals Purwarupa Alat Deteksi Ketinggian Banjir Perbantuan SMS Gateway Dan Mikrontroler

INOVA-TIF ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 51
Author(s):  
Muhammad Ardi
Keyword(s):  
Detection System ◽  
Water Levels ◽  
Design Flood ◽  
Loss Of Life ◽  
Data Processor ◽  
Working Principle ◽  
Arduino Uno ◽  
Flood Elevation ◽  
Opening And Closing ◽  
The Impact

<em>Flood disasters still occur regularly and continuously in Indonesia. Flooding can occur due to the volume of water in the river beyond the river body. Many impacts caused by flooding, not only material losses, flooding can also cause loss of life. The impact of flooding can be reduced if people are better prepared to face the flood. One way is to quickly disseminate information on river water levels to the community. It is necessary to make a solution on how to design an automatic sluice using Arduino UNO R3 and how to monitor the water situation during floods. The working principle of this tool uses an ultrasonic sensor as a water level detector, Arduino as a data processor, servo motor as opening and closing the door bar automatically and the modem as an SMS notification. Because design based detection system is needed In this study there are two formulations of the problem (i) How to design flood altitude detection devices using Arduino uno r3 which can open and close automatically. (ii) How to test the flood altitude detection system using a wavecome modem. The research objective is divided into two parts (i) Creating a series of flood elevation devices using Arduino r3 so that it can open and close automatically (ii) Gets the results of flood elevation system testing with an sms gateway</em>

scholarly journals A new simulation method for laser speckle imaging to investigate hemodynamics

2019 ◽  
Vol 128 ◽  
pp. 02001
Author(s):  
X Sang ◽  
D Li ◽  
B Chen
Keyword(s):  
Speckle Pattern ◽  
Simulation Method ◽  
Laser Speckle ◽  
Contrast Imaging ◽  
Laser Speckle Imaging ◽  
Speckle Imaging ◽  
Dynamic Speckle ◽  
Speckle Size ◽  
The One

Speckle simulation is a powerful protocol to investigate the properties of speckle and evaluate image processing method. However, only static speckle images can be simulated by available methods without considering time-integrated effect of CCD. A time–integrated dynamic speckle simulation method basedon coherent imaging was developed. Through the new simulation method, the effect of speckle size on LSCI was investigated. The smaller the speckle size is, the higher the spatial resolution become.But the one-dimensional speckle size should exceed two pixels to sample the speckle pattern. The characteristics of existing speckle contrast imaging methods were studied based on spatial statistics, and optimal parameters are given to obtain accurate and less noisy image. In general, the new simulation method for laser speckle imaging is a powerful tool to monitor blood flow in vivo and lay a solid foundation for the study of hemodynamics.

The paste filling pipe flow on-line detection system based on ultrasonic

2014 ◽  
Vol 11 (4) ◽  
pp. 397-402 ◽  
Author(s):  
Guimei Wang ◽  
Shuai Zhang
Keyword(s):  
Pipe Flow ◽  
Detection System ◽  
Mining Industry ◽  
Line Detection ◽  
Filling Material ◽  
Ultrasonic Detection ◽  
Detection Technology ◽  
On Line ◽  
Working Principle ◽  
Ultrasonic Detection Technology

Recently, filling mining is becoming more and more important in the mining industry and has been used widely. In order to better control the process of paste filling mining and acquire the accurate amount of filling material used, and to reduce the waste of paste filling material, we should detect in real time the paste flow in the pipe during the process of filling. This paper introduces in detail the basic principle of ultrasonic detection technology and the hardware composition and working principle of the on-line detection system. The author uses the theory of unascertained error analysis of detecting data and implements ultrasonic detection technology to realize on-line detection of paste filling pipe flow.

On the Application of Hall Sensor in Speed Measurement for DC Stepper Motor

2014 ◽  
Vol 971-973 ◽  
pp. 613-617
Author(s):  
Juan Wang ◽  
Meng Wang ◽  
Shao Cong Bu ◽  
Sheng Quan Zhang ◽  
Yan Liu
Keyword(s):  
Detection System ◽  
Theoretical Data ◽  
Pulse Signal ◽  
Hall Sensor ◽  
Unit Interval ◽  
Stepper Motor ◽  
Single Chip ◽  
Speed Measurement ◽  
Working Principle ◽  
Hardware Circuit

This paper describes the working principle of hall sensor and its application in DC stepper motor. It designs a speed detection system for DC stepper motor based on P89V51 Single Chip Microcontroller (SCM), i.e. hardware circuit diagram and software flow chart. It utilizes Hall elements to complete the conversion from speed to pulse and then process the pulse signal to get the quantity of pulse during unit interval. By means of comparison of test and theoretical data, it indicates that the speed measurement system is satisfactory for application in reality.

A LCD Touch Screen Controller Based on LPC2138

2011 ◽  
Vol 383-390 ◽  
pp. 6914-6919 ◽  
Author(s):  
Jing Gao ◽  
Lian Qing Zhu ◽  
Yang Kuan Guo ◽  
Hao Meng
Keyword(s):  
Control Method ◽  
Detection System ◽  
Liquid Crystal Display ◽  
Touch Screen ◽  
High Accuracy ◽  
Erythrocyte Sedimentation ◽  
Synchronization Algorithm ◽  
Great Reliability ◽  
Working Principle ◽  
And Control

The user interface made of a LCD (liquid crystal display) screen and a touch screen based on LPC2138 is presented in this paper. The hardware design of the LCD and the touch screen is introduced and the software flow of the LCD and the touch screen is also described in this paper. And this paper proposes the synchronization algorithm which can achieve the LCD and the touch screen point by point with high accuracy and great reliability. On the basis of analyzing the principle of the embedded touch panel system, the working principle and control method of the dedicated controller DV320240GB touch screen are analyzed. The method for obtaining the coordinates of the touch screen and the synchronization algorithm of the LCD display are proposed to improve the efficiency of the touch screen and the LCD. The above-mentioned design has been successfully applied in ESR (erythrocyte sedimentation rate) detection system.

The Escape Wheel Detection System Algorithm Design Based on the Parameters Comparation with the Digital Template

2013 ◽  
Vol 694-697 ◽  
pp. 1879-1883
Author(s):  
Jia Chen ◽  
Zhong Wang
Keyword(s):  
Real Time ◽  
Projection Method ◽  
Detection System ◽  
Algorithm Design ◽  
Engineering Application ◽  
Experimental Results ◽  
Good Reliability ◽  
Practical Engineering ◽  
Working Principle ◽  
Digital Template

According to the traditional application of the artificial projection method to escape wheel detection, this paper proposes a new method based on digital template, after the introduction of the working principle and advantage, emphatically discuss the algorithm design. The experimental results demonstrate the proposed algorithm has high real-time ability, good reliability and more suitable for practical engineering application.

scholarly journals Assessment of Seed Viability by Laser Speckle Techniques

2003 ◽  
Vol 86 (3) ◽  
pp. 287-294 ◽  
Author(s):  
Roberto A. Braga ◽  
Inácio M. Dal Fabbro ◽  
Flávio M. Borem ◽  
Giovanni Rabelo ◽  
Ricardo Arizaga ◽  
...  
Keyword(s):  
Seed Viability ◽  
Laser Speckle

Optimized Design of Sun Position Detection Sensor

2011 ◽  
Vol 120 ◽  
pp. 499-503 ◽  
Author(s):  
Yu Ning Zhong ◽  
Li Xia Zeng ◽  
Shan Ting Ding ◽  
Xiao Li Zhang
Keyword(s):  
Detection System ◽  
Orthogonal Experiment ◽  
Optimal Combination ◽  
Optimized Design ◽  
The Sun ◽  
Optical Elements ◽  
Position Detection ◽  
Sensor Structure ◽  
Working Principle ◽  
Main Factors

With the object of optical sensor detects the position of the sun, the working principle of the sun position detection system based on four photosensitive devices was analyzed.The sensitive part of this type of sensors was analyzed with optimization. Silicon photocells were selected as optical elements . The main factors and interactions between them which affect the accuracy of the sensor were analyzed using the idea of orthogonal experiment and related software , the optimal combination for the size of the sensor structure was got.

Research on the Algorithm of Automatic Detection of Bus Dashboard Pointer Based on CM-Hough Transforms

2014 ◽  
Vol 621 ◽  
pp. 663-668
Author(s):  
Peng Ge Ma ◽  
Rong Xing Guo
Keyword(s):  
Machine Vision ◽  
Hough Transform ◽  
Detection System ◽  
Automatic Detection ◽  
Detection Experiment ◽  
Position Detection ◽  
Image Analysis Algorithm ◽  
Hough Transforms ◽  
Working Principle ◽  
Automatic Detection System

The pointer position detection is an important part of implementing the bus dashboard functional test using machine vision. This paper introduces the composition and working principle of the dashboard automatic detection system on machine vision. Then, combining with image processing and Hough transform, we get the image analysis algorithm of the dashboard pointer detection. By analyzing a large amount of computation resulted from the fact that traditional Hough transform uses divergent mapping methods, paper puts forward the methods of improving the convergence of the mapping and conducts parameter space mapping, which effectively reduces the amount of computation. After that, combining with the actual picture of a bus dashboard, automatic detection experiment was carried out for the proposed algorithm. Experiments show that algorithm for dashboard pointer position machine visual based on CM-Hough transform can obtain the angle of the pointer, and effectively shorten the time for dashboard functionality test, and improve the efficiency of the production line for passenger bus dashboard.

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