Screw Pump‐Type Water Triboelectric Nanogenerator for Active Water Flow Control

2020 ◽  
pp. 2000758
Author(s):  
Seh-Hoon Chung ◽  
Jihoon Chung ◽  
Banseok Kim ◽  
Seamin Kim ◽  
Sangmin Lee
Author(s):  
Anurag Marathe ◽  
Anil Aware ◽  
Pratik Bagul ◽  
Prof. Yogesh Mogal

A water flow control valve is very important tool as per mechanical industry. Present invention in general relates to the field of mechanical engineering and more specifically to water flow control valve, which comprises of Y shape pipe and on/off circle ring. Controlling the water flow is not easy task it is time consuming and simultaneously required more labor which is both slow and exhausting task. Also in simple "Y" shape pipe (two different directions), one cannot control the flow or direction in that shape. Thus there is an urgent need to design and develop am improved system or device for controlling the flow of water. Many attempts are made for the same and few of them are discussed below. CN104373661A discloses power-off protection type water flow control valve. A magnet is fixed to a valve rod, a coil can drive the valve rod, which is driven by the magnet, to move vertically in a reciprocating mode, and a control circuit makes the valve be opened or closed through control over the current direction of the coil. Compared with the prior art, the power-off protection type water flow control valve has the advantages of being capable of effectively lowering the using cost of a user, long in service life, capable of performing water flow protection in case of power-off and providing a manual opening and closing function so that using can be not affected for the user even under the power-off condition, reliable in performance, capable of being assembled or manufactured in an integrated mode and convenient to produce; the opening or closing state can be kept without current, and energy consumption is low.


Author(s):  
G O Tirian ◽  
C A Gheorghiu ◽  
T Hepuţ ◽  
C P Chioncel

2013 ◽  
Vol 273 ◽  
pp. 694-698
Author(s):  
Ying Qi Zhang ◽  
You Feng Luo ◽  
Ming Feng Lin ◽  
Wei Xiong

In this paper, a capacitance-based design of the tap water flow control device is introduced. It is designed to prevent the waste of water resources caused by the current taps. It collects the capacitance signal by means of C/F conversion module based on 555 timer. Then the switching frequency signal and the flow frequency signal are generated according to the capacitance signal collected. They will be analyzed and compared with the signal STC15F100 microcontroller stored and generating the switch commands and flow regulation instructions to control the step motor. Finally, the water flow control function is realized by the device.


Author(s):  
Hugo Gomes ◽  
Carolina Ferreira1 ◽  
Everthon Oliveira1 ◽  
Agnaldo Reis ◽  
Walmir Caminhas

This paper describes an ONFC (OnLine Neurofuzzy Controller) application with a dynamic learning rate to control the water flow of a real plant. A revision of ONFC is presented and the ONFCDw version is used, which has an action that minimizes the increase in the difference between the controller weights. The dynamic learning rate used to update the controller weights is described and the results of experiments performed in a water flow control process are presented, comparing the results with the PID controller used in the process.


Author(s):  
Nahom Aron ◽  
Bereket Yemane ◽  
Temesgen Mikael ◽  
Reem Salem ◽  
Fatna Belqasmi
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