特里兹
电
集合(抽象数据类型)
对偶(语法数字)
控制(管理)
计算机科学
班级(哲学)
消费(社会学)
能源消耗
汽车工程
工程类
模拟
电气工程
人工智能
艺术
社会科学
文学类
社会学
程序设计语言
作者
Chong Peng Lean,D. Ismail,Poh Kiat Ng,Feng Kong,M. Reyasudin Basir Khan,Sargunam Thirugnanam
出处
期刊:Sensors
[Multidisciplinary Digital Publishing Institute]
日期:2024-02-10
卷期号:24 (4): 1177-1177
被引量:11
摘要
Electrical energy is often wasted through human negligence when people do not switch off electrical appliances such as lighting after leaving a place. Such a scenario often happens in a classroom when the last person leaves the class and forgets to switch off the electrical appliances. Such wastage may not be able to be afforded by schools that are limited financially. Therefore, this research proposed a simple and cost-effective system that can analyze whether there is or is not a human presence in the classroom by applying a counter to count the total number of people entering and leaving the classroom based on the sensing signals of a set of dual PIR sensors only and then correlating this to automatically turn on or off the electrical appliances mentioned. The total number of people identified in the classroom is also displayed on an LCD screen. A TRIZ approach is used to support the ideation of the system. The system can switch on several electrical output loads simultaneously when the presence of people is detected and switch them off when there are no people in the classroom. The proposed system can be expanded to be used in homes, offices, and buildings to prevent the high cost of electricity consumption caused by the negligence of people. This enables smarter control of electricity consumption.
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