Autonomous Control of Abrasive Flow Precision Machining

2011 ◽  
Vol 215 ◽  
pp. 384-388
Author(s):  
J.L. Xu ◽  
Shi Ming Ji ◽  
Z.P. Fang
Keyword(s):  
Real Time ◽  
Control Program ◽  
Autonomous Control ◽  
Network Communication ◽  
Precision Machining ◽  
Motor Speed ◽  
Communication Structure ◽  
Quality And Reliability ◽  
Autonomous Nodes ◽  
Program Reliability

Autonomous nodes distribution, including their relations, real time quality and network communication in abrasive flow precision machining (AFPM) was studied. Autonomous nodes are arranged according to their function. Control program of motor speed is copied into liquid level nodes, pressure nodes, temperature nodes, flux nodes and input/output nodes. If nodes failure has happened, competition algorithm is enabled automatically to select a new node to run important program. Reliability of autonomous control system can be calculated utilizing the formula derived from probability theory. ARM 9 embedded systems with 32 bit CPU and real time embedded operating system are adopted to realize real time quality and reliability of nodes which run independently. CAN field bus and message type flag are used in network communication structure to ensure the real time quality and reliability of nodes connection. Results reveal that using autonomous decentralized control in AFPM possesses not only the characteristic of real time quality, but also the online fault tolerance, which can ensure that system runs continuously even if some nodes break down. The method can avoid system destruction and improve whole system reliability.

Demystifying Essential Containers and Places for Aedes Mosquito Control in Thailand

2020 ◽  
Author(s):  
Naiyana Sahavechaphan ◽  
Asamaporn Chatrattikorn ◽  
Pongsakorn Sadakorn ◽  
Darin Areechokechai ◽  
Sopon Iamsirithaworn
Keyword(s):  
Real Time ◽  
Survey Data ◽  
Prevention And Control ◽  
Mosquito Control ◽  
Control Program ◽  
Water Tank ◽  
Effective Prevention ◽  
Larval Survey ◽  
Public Health Officials ◽  
And Control

Abstract Background: The strategy for prevention and control of Aedes-borne diseases relies on timely elimination of key breeding containers. There is thus a crucial need to identify key breeding containers to enhance vector control activities. The visual larval survey of wet containers has then been conducted as a routine mission of the Department of Disease Control (DDC). To facilitate this, DDC has deployed a mobile application, namely TanRabad SURVEY, since May 2016. As per an inspected place, TanRabad SURVEY supports the real-time collection of its larval survey data and processing of its larval indices and key breeding containers. Methods: Larval survey data from 2017 to 2019 were spatially and temporally collected by public health officials via TanRabad SURVEY. Several measurements were computed to identify the overall and regional key breeding containers and places; and the regional transmission potentiality of Aedes-borne diseases. The measurements for identifying essential containers were breeding potentiality, productivity, contribution and preference ratio. As for places, the larval productivity of places based on larval indices was employed. Such place productivity was also implemented for discovering the regional transmission potentiality of Aedes-borne diseases. Results: The overall essential breeding containers were water tank, unused containers, other used containers, old tyres, anti-ant bowls, drip tray of water dispensers, pet bowls and plant leaves. As for regional aspects, different regions had different essential breeding containers wherein their most common containers were unused containers, other used containers, old tyres and drip tray of water dispensers. All regions had similar experiences that villages and temples were the top two riskiest places, followed by schools, factories, hotels and hospitals. Additionally, all regions had high transmission potentiality of Aedes-borne disease as above 30 of all their places were moderate and high risk places. Conclusions: This study identified the overall and regional key breeding containers and places along with the regional transmission potentiality of Aedes-borne diseases. Beside this, the empirical evidence had shown that the breeding productivity of most containers and places in each type was gradually decreased from time to time. This was mainly because TanRabad SURVEY supported real-time risk communication to community participants and effective prevention and control program development.

A generalised solution for generating stepper motor speed profiles in real time

Mechatronics ◽  
2013 ◽  
Vol 23 (5) ◽  
pp. 541-547 ◽  
Author(s):  
P.J. Siripala ◽  
Y. Ahmet Sekercioglu
Keyword(s):  
Real Time ◽  
Stepper Motor ◽  
Motor Speed

scholarly journals Design and Simulation of a Wireless Sensor Network Greenhouse-Monitoring System Based on 3G Network Communication

2016 ◽  
Vol 12 (05) ◽  
pp. 48 ◽  
Author(s):  
Y. H. Zhou ◽  
J. G. Duan
Keyword(s):  
Wireless Sensor Network ◽  
Real Time ◽  
Sensor Network ◽  
Monitoring System ◽  
Sensor Data ◽  
Wireless Sensor ◽  
Network Communication ◽  
Target Area ◽  
Wireless Communication Network ◽  
Environmental Monitoring System

A greenhouse provides a stable and suitable environment for the growth of plants. Temperature and humidity are closely related to plant growth. These factors directly affect the water content of plants and the quality of fruits. To solve the problems in the current monitoring system of greenhouse cultivation, such as complicated wiring, large node power consumption, and so on, this study proposes a wireless sensor network greenhouse-monitoring system based on third-generation network communication for the real-time monitoring of the temperature, humidity, light, and CO<sub>2</sub> concentration in a greenhouse. GS1011M is regarded as the core in developing wireless terminal nodes. PC software is used to build a real-time observation platform. Sensor data are received in real time through a wireless communication network to complete the monitoring of the target area. A simulation research is also conducted. Results show that the power dissipation of the greenhouse environmental monitoring system is low, its data accuracy is high, and its operation is stable.

scholarly journals Pooling of interdigital swab samples for PCR detection of virulent Dichelobacter nodosus

2017 ◽  
Vol 30 (2) ◽  
pp. 205-210 ◽  
Author(s):  
Deborah Greber ◽  
Iwan Locher ◽  
Peter Kuhnert ◽  
Marc-André Butty ◽  
Kerstin Holdener ◽  
...  
Keyword(s):  
Real Time ◽  
Sensitivity And Specificity ◽  
Real Time Pcr ◽  
Substantial Reduction ◽  
Control Program ◽  
Foot Rot ◽  
Dichelobacter Nodosus ◽  
Foot Disease ◽  
Development And Validation ◽  
Adequate Method

Virulent ovine foot rot is a contagious foot disease. Given the development and validation of a real-time PCR to detect Dichelobacter nodosus isolates that contain the virulence-associated protease genes aprV2 and aprB2, the diagnosis of foot rot has made considerable progress. We evaluated pooling methods to reduce the number of samples during a foot rot control program. Samples of individual feet were compared to a 4-feet sample of the same sheep. All further analyses based on 4-feet samples (pools-of-5 and pools-of-10 4-feet samples) were compared to samples of individual sheep, and a risk-based herd sampling was evaluated and compared to the whole flock. The sensitivity and specificity of the 4-feet samples for detection of aprV2-positive strains was 93.8% (CI: 87.6–97.5%) and 98.3% (CI: 96.5–99.3%), respectively. The sensitivity and specificity of the pools-of-10 was 86.7% (CI: 78.4–92.7%) and 100.0% (CI: 97.4–100%), respectively. Pools-of-5 were not significantly more sensitive than pools-of-10. The pooling of 4 individual foot samples into one 4-feet sample is an adequate method to reduce the number of samples of individual sheep. The sensitivity of pools-of-5 and pools-of-10 is too imprecise for a control program. Risk-based sampling allowed for a substantial reduction of samples to be tested, had a sensitivity of 95.8% (CI: 78.9–99.9%) and specificity of 100.0% (CI: 88.1–100.0%) when determining the foot rot flock status, and represents an adequate methodology to predict within-flock freedom from infection.

Real-time Autonomous Control

1993 ◽  
Vol 26 (2) ◽  
pp. 577-580 ◽  
Author(s):  
A.J. Krijgsman ◽  
R. Jager ◽  
H.B. Verbruggen
Keyword(s):  
Real Time ◽  
Autonomous Control ◽  
Time Autonomous

The Design of Product Packaging Transmission Line Control System Based on Siemens PLC

2014 ◽  
Vol 709 ◽  
pp. 327-330
Author(s):  
Zong Yang Zhong ◽  
Hui Lai Sun
Keyword(s):  
Control System ◽  
Transmission Line ◽  
Real Time ◽  
Control Program ◽  
Main Function ◽  
Time Data ◽  
Product Packaging ◽  
The Real ◽  
Real Time Data ◽  
The Status

This paper mainly introduces a kind of product packaging transmission line control system based on Siemens S7-200 PLC. It elaborated the main function principle of the system and the implementation of the control program; SIMATIC WinCC flexible 2008 of SIEMENS was used to monitor the status of the system, and display the real-time data and alarm report. At the same time the system can also be controlled by the screen.

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