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2013•Unpublished venueRequires access

Using an IR sensor module to reduce the standby power consumption of a PC monitor

Cheng‐Hung Tsai, Ying‐Wen Bai, Yen-Wen Lin, Kung-Shen Lin, Li-Chia Cheng, Roger Jia Rong Jhang

Open publisher page 2 citations

Abstract

This paper presents a way to reduce the standby power consumption of a personal computer (PC) monitor in standby status. Although a PC monitor enters standby by means of the power management of the operating system (OS) after a preset idle time and awakens when the keyboard is hit or the mouse is moved, the monitor still consumes 0.3–1 W power in standby status. This design features a socket to plug-in the PC monitor, which consumes 0.01 W in standby status and is not only easy to set up but also inexpensive. This socket supplies the monitor with power when the user appears; when the user leaves it turns the monitor off, and the electric power is cut off to reduce the standby power. A micro control unit (MCU) receives signals from an infrared (IR) sensor module which detects the user approaching the monitor. The MCU controls the relay On/Off when used as a switch for cutting off the standby power.

About this research paper

What this paper is about

This paper presents a way to reduce the standby power consumption of a personal computer (PC) monitor in standby status. Although a PC monitor enters standby by means of the power management of the operating system (OS) after a preset idle time and awakens when the keyboard is hit or the mouse is moved, the monitor still consumes 0.3–1 W power in standby status. This design features a socket to plug-in the PC monitor, which consumes 0.01 W in standby status and is not only easy to set up but also inexpensive. This socket supplies the monitor with power when the user appears; when the user leaves it turns the monitor off, and the electric power is cut off to reduce the standby power. A micro control unit (MCU) receives signals from an infrared (IR) sensor module which detects the user approaching the monitor. The MCU controls the relay On/Off when used as a switch for cutting off the standby power.

Why it matters

OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

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Method / approach

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Main findings

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Available abstract

This paper presents a way to reduce the standby power consumption of a personal computer (PC) monitor in standby status. Although a PC monitor enters standby by means of the power management of the operating system (OS) after a preset idle time and awakens when the keyboard is hit or the mouse is moved, the monitor still consumes 0.3–1 W power in standby status. This design features a socket to plug-in the PC monitor, which consumes 0.01 W in standby status and is not only easy to set up but also inexpensive. This socket supplies the monitor with power when the user appears; when the user leaves it turns the monitor off, and the electric power is cut off to reduce the standby power. A micro control unit (MCU) receives signals from an infrared (IR) sensor module which detects the user approaching the monitor. The MCU controls the relay On/Off when used as a switch for cutting off the standby power.

Key concepts: Standby power, Microcontroller, Idle, Embedded system, Power consumption, Power (physics), Computer science, Relay

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