Design and Construction of an Automatic Home and Office Power Control System

In homes and offices, it is very common for occupants to forget to switch OFF the lighting and fans when leaving the premises. This can be attributed to human forgetfulness and the epileptic power supply which causes interruption that results in users forgetting the state of their appliances (whether they are ON or OFF). Consequently, these appliances would continue to work whenever power is restored when the occupants might have vacated the premise. This action is not a small contributor to energy wastage in a country like Nigeria where there is an inadequate energy supply to go round the populace. In this work, a simple but robust automatic home and office power control system is developed to auto-detect the presence of an occupant in the room through the passive infrared (PIR) sensor and control the electrical appliances (lighting and fan source) in the room. Certain conditions must be met for the operation of lighting and the fan source. The lighting comes up when the PIR sensor senses the presence of an occupant and the room is in darkness, while the fan would work when there is an occupant and the temperature in the room is above 35°C. These conditions are programmed to suit the need of the occupant but cannot be changed by the user. The device automatically switches off within five minutes after the last occupant leaves the room. Keywords— Microcontroller, Passive infrared (PIR) sensor, Solid State Relay (SSR), and Switching

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Design of uninterruptible power supply power control system equipped mobile digital radiography

2017 International Conference on Communication and Signal Processing (ICCSP) ◽

10.1109/iccsp.2017.8286468 ◽

2017 ◽

Author(s):

B. Deeapareshikaa ◽

Y. Steve Rexon ◽

Varshini Karthik ◽

N. Dhanraj

Keyword(s):

Control System ◽

Power Control ◽

Digital Radiography ◽

Power Supply ◽

Uninterruptible Power Supply ◽

Power Control System ◽

Uninterruptible Power

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Power Level Control of Nuclear Power Plant Based on Asymptotical State Observer under Neutron Sensor Fault

Science and Technology of Nuclear Installations ◽

10.1155/2021/8833729 ◽

2021 ◽

Vol 2021 ◽

pp. 1-8

Author(s):

Liming Zhang ◽

Hongyun Xie ◽

Qizhi Duan ◽

Chao Lu ◽

Jixue Li ◽

...

Keyword(s):

Control System ◽

Power Control ◽

Control Systems ◽

Nuclear Power ◽

Power Plants ◽

Power Level ◽

Level Control ◽

Power Control System ◽

Neutron Sensors ◽

And Control

Power level control is one of the critical functions in the instrument and control system of nuclear power plants (NPPs). In most power level control systems of NPPs, the power level or average neutron flux in reactor cores provided by out-of-core neutron sensors are usually measured as feedback of power control systems, while, as critical measuring devices, there is a risk of damage to out-of-core neutron sensors. For improving the operation reliability of NPPs under the neutron sensors’ failure, a power control system based on power observer is developed in this work. The simulation based on NPP simulator shows the power control system based on the observer is effective when neutron sensors fail.

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Application on Pulse Energy Saving Power Supply in Electrical Precipitator Power Control System of Energy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.753-755.2411 ◽

2013 ◽

Vol 753-755 ◽

pp. 2411-2414

Author(s):

Yu Ping Yang

Keyword(s):

Control System ◽

Power Control ◽

Power Supply ◽

Electrostatic Precipitator ◽

Operating Voltage ◽

Operation Process ◽

Power Control System ◽

Operating Current ◽

Storage Properties ◽

Electrical Precipitator

Pulse power supply fully utilize the inductance and capacitance storage properties, maximize operating voltage, reduce the operating current. Used in electric precipitator power control system, in maintaining or slightly increased efficiency premise, avoid electrostatic precipitator operation process of the vulnerable emerging phenomenon, but also will corona to heat and light forms of energy consume, so as to realize the saved greatly.

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Research on Adaptive Power Control System of Working Machinery

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.278-280.1504 ◽

2013 ◽

Vol 278-280 ◽

pp. 1504-1509

Author(s):

Guo Jin Chen ◽

Ting Ting Liu ◽

Jing Ni ◽

Ming Xu ◽

Huo Qing Feng

Keyword(s):

Control System ◽

Power Control ◽

Intelligent Control ◽

Control Method ◽

Transmission System ◽

Characteristic Parameters ◽

Load Characteristic ◽

Power Control System ◽

Adaptive Power ◽

And Control

The load changes of working machinery in the running process will certainly result in poor matches in the characteristics of the transmission system. For the issue, this paper studies the adaptive power control model and algorithm. The adaptive power control system is developed using the adaptive power control technology based on the load identification, and is applied in the full AC electric forklift and the CNC band sawing machine. The variable frequency system and intelligent control method based on the integration of the load characteristic recognition and control proposed in this paper, adaptively adjust the parameters of the PID controller according to the load characteristic parameters identified real-timely for the transmission system of the working machinery, so as to achieve the best performance matches, the highest effectiveness and lowest energy consumption of the entire transmission system.

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