Results 241 to 250 of about 675,831 (291)

Arthroscopy and irrigation control

Arthroscopy, 1986
Abstract Saline flow through 2.2, 3.8, and 5.0 mm arthroscopes was studied by varying inflow pressure from 0 to 20 kPa, corresponding to the effect of gravity from 0 to 7 feet. The relation between knee joint distention and intraarticular pressure was studied in 25 patients under general anesthesia, and the secondary effect on gravity
N, Oretorp, S, Elmersson
openaire   +2 more sources

Smart irrigation controller

IEEE International Conference on Electro/Information Technology, 2014
There is a need for more dynamic control over residential irrigation to conserve our precious water resource. This paper looks at developing a design for an Internet based “Smart Controller” for use in a residential sprinkler system to solve some problems that traditional controllers inherit.
Jason Parmenter, Alex N. Jensen, Steve C. Chiu   +2 more
openaire   +2 more sources

CMOS SoC for irrigation control

2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005
A CMOS VLSI system on chip, designed for irrigation control applications was developed. The SoC features include wireless communication capability, data processing, sensor signal acquisition and actuator control. A power saving strategy provides long-term autonomy with standard energy sources. Application software and dedicated software development CAD
José Camargo da Costa, Adson Ferreira da Rocha, Leonardo R. A. X. de Menezes, Ricardo Pezzuol Jacobi, Alexandre R. S. Romariz, R. R. P. Soares, Gilmar S. Beserra, J. D. Costa, Genival Mariano de Araujo, W. A. Araujo, J. C. Sd. S. Marra, W. A. Amaral, P. R. O. Vogel, A. L. da Silva, A. Jd. O. Martins, L. R. Povoa   +15 more
openaire   +2 more sources

A controlled eye irrigation system

Current Eye Research, 1981
Irrigation of the eye and adnexa is a way of removing damaging material and treating different diseases by applying medicants in the irrigant in humans and in laboratory animals. A system for controlled eye irrigation in animals is presented, suggesting possible use in human patients as well.
I, Sternberg, S, Gassner
openaire   +2 more sources

Control of Irrigation Channels

IEEE Transactions on Control Systems Technology, 2008
Water losses in irrigation channels are large, but they can be substantially reduced by improving the control systems. The flows and water levels are controlled using overshot gates located along the channels, and in this paper we consider decentralized PI control and centralized multivariable LQ control of the flows and water levels.
openaire   +2 more sources

Review of Research on Irrigation Decision Control

2021 the 3rd International Conference on Big Data Engineering and Technology (BDET), 2021
With the development of intelligent control technology in the field of agriculture, the research of intelligent irrigation decision control has been widely concerned by scholars. Soil moisture, crop physiology and environment all have important influence on the precision of irrigation decision, and the influence is nonlinear and fuzzy. Therefore, it is
Jie Chen, Xuan Ji, Junhui Wu, Yusheng Wu, Kaiyan Lin, Huiping Si   +5 more
openaire   +1 more source

LQ control of an irrigation channel

42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
In this paper we consider LQ control of an irrigation channel in which the water levels are controlled using overshot gates located along the channel. Traditionally, irrigation channels have been modelled using the St. Venant equations which are partial differential equation, and hence quite difficult to use for control design.
openaire   +2 more sources

Control of an Irrigation Canal

Journal of Hydraulic Engineering, 1996
A control algorithm to maintain a constant water depth at every pool of a multireach irrigation canal is presented. A simplified model of the dynamic response of the downstream water depth is obtained as a three-parameter exponential. This model, which predicts the future error signal, incorporates actual canal information and is used in the ...
Leslie Skertchly Molina, J. P. Miles
openaire   +1 more source

Suction Irrigator With Finger Control

Archives of Otolaryngology - Head and Neck Surgery, 1966
This modification of the House suction irrigator with finger control on the irrigation portion facilitates the use of suction and irrigation in one hand during mastoid and tympanoplastic surgery (Fig 1). There is no need for the nurse to clamp the suction rubber tubing. This avoids the delay in "on and off" action of irrigation.
openaire   +2 more sources

Optimum control of irrigation water application

Automatica, 1974
The problem of controlling soil water within the root zone of irrigated crops to minimize the expected loss is examined. Control is accomplished by scheduling the amount of and timing irrigations to replenish the soil water reservoir depleted by the crop's water consumption.
Martin M. Fogel, Lucien Duckstein, Chester C. Kisiel   +2 more
openaire   +1 more source