scholarly journals Optimal Design of Online Measuring System for Water Content of Lubricating Oil System

Author(s):  
Nan Xie ◽  
Weimin Chen ◽  
Yijia Yuan







2011 ◽  
Vol 317-319 ◽  
pp. 2079-2084
Author(s):  
Rang Shu Xu ◽  
Xiao Wen Chen ◽  
Jian Ming Yang ◽  
Zhi Wei Dong ◽  
Min Li Bai

The composition and principles of the digital measuring system was investigated on the basis of digital oil measuring method. Fly attitude-oil quality - measuring height data tables were generated by using UG software calculation of oil quantity characteristics. Then the oil surface angle under different fly attitude and overload was calculated through coordinate transformation method. Finally the amount of oil was calculated by three-dimensional liner interpolation method. Meanwhile, the free surface movement of lubricating oil tank under different overload was simulated through VOF numerical model. The results showed that using UG software to build model and generate fly attitude-oil quantity-measuring height data tables is accurate and useful. The VOF model method is a complement to digital measurement, which can track the phase interface of continuum, analyze the movement of oil qualitatively and calculate the dead volume of digital method.



2013 ◽  
Vol 401-403 ◽  
pp. 1129-1134
Author(s):  
Qiang Liao ◽  
Wei Dong Fan ◽  
Jiang Wu ◽  
Tao Xu

In order to detect lubricating oil moisture content quickly, and replace lubricating oil of equipment in time , impedance type moisture content of lubricating oil detecting system based on AD5933 and cylindrical coaxial capacitive sensor are explored. The paper selected the excitation voltage amplitude and frequency reasonably, and studied the relationship between water content of lubricating oil and impedance value. The result suggests that when the excitation voltage amplitude is 2V, the frequency ranges from 4 kHz to 6 kHz, moisture content of lubricating oil is closely related to impedance value and lubricating oil resistance value decreases with the increase of its moisture content. In addition, the mathematical model between moisture content of lubricating oil and the impedance value is established, moisture content of lubricating oil can be calculated according to the impedance value.



2012 ◽  
Vol 605-607 ◽  
pp. 1317-1321
Author(s):  
Qing Rui Meng ◽  
Shang Fei Lin ◽  
Jian Wang

A hydro-viscous winch comprises a disc brake and a hydro-viscous brake. The hydraulic system is of utmost importance to the performance of the winch. To verify the validity of the hydraulic system, by using AMESim software, the simulation model of the hydraulic system was built and the performance analyzed. The results show that 1) the pressure and the flow rate of the disc brake hydraulic system are mainly affected by the energy accumulator; 2) Hydro-viscous brake hydraulic system pressure and lubricating oil flow rate are influenced by orifice diameter of the throttle valve; 3) during the braking period, the amplitude of the deceleration is rather small and the hydro-viscous winch hydraulic system can meet the requirements well. Research achievements of this work provides theoretical basis for optimal design of the hydro-viscous winch hydraulic system.



Author(s):  
João C. Giacomin ◽  
Flávio H. Vasconcelos ◽  
Elson J. Silva

This paper proposes a distributed measuring system based on wireless sensor networks (WSN) employed to estimate vegetation water content in agricultural fields. A WSN deployed along the whole field permits to measure and map soil, air and plant variables and transmit these data, by small radios, to a central computer. Water content is obtained by measuring the attenuation of the network communication signals (RF), without the use of any specific sensor. The need of distributed measurements to estimate agricultural crop parameters is pointed out. A mathematical model of radio wave propagation through vegetation is used to develop the method of estimating vegetation water content with a RSSF. Field tests confirmed the viability of the proposal.



Author(s):  
Devesh Mishra ◽  
R. S. Yadav ◽  
K. K. Agrawal

The human civilization has started doing agriculture for its growth from the prehistoric era. Traditional methods of irrigation being followed up from early times are very inefficient and poor due to excess usage of water. In these techniques, plenty of water gets wasted as well as causes different diseases and fungus to plants because of overwater content in the soil generally named soil moisture. For the conservation of soil and water with an increase in efficiency of the farm, irrigation of soil water content monitoring system is very essential. Most of the water resources available globally are used for agricultural purpose only. To cope up with rising demands of efficient agriculture advanced soil moisture metering system have been developed and discussed to provide appropriate water to the crop. This advanced system gets powered through a solar panel a renewable source of energy. This system monitors the water content in the soil through sensors and as per the requirement watering of the plant is done. For processing and storage of a large amount of data storage cloud based Blynk service is used. This is a smartphone based moisture measuring system for appropriate irrigation using IoT. The primitive goal of this article is to monitor and metering of soil moisture to control the content of water in the plant. This is a mobile integrated smart moisture measurement system using IoT.



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