Multipurpose Lights Flasher / Noorul Imma Dahalan and Nor A'dilah Mokhtar

• Main Authors: Dahalan, Noorul Imma, Mokhtar, Nor A'dilah
• Format: Student Project
• Language: English
• Published: 2003
• Subjects: Detectors. Sensors. Sensor networks
• Online Access: https://ir.uitm.edu.my/id/eprint/110760/1/110760.PDF; https://ir.uitm.edu.my/id/eprint/110760/

Fire is one of the most hazardous natural forces. Sensing fire and fighting it at the early stage can prevent losses to great extent. Flames always occur because of self carelessness, and cause great losses. Thus, this marvelous Multipurpose Lights Flasher is to help people avoiding fire problems. We also had known that some people were born as a handicapped. They cannot sense a problem like a normal person. They were suffering from physical or mental disability. So they need other practical way to sense the problems that occur. The system presented here uses the most common yet very reliable negative temperature coefficient (NTC) as a heat sensor. It will give a signal to the circuit to switch on the alarm and the lights flasher circuits. When there is fire, the alarm circuit emits a blare sound while the lights flasher circuit will contribute lights. Therefore the owners of the building will notice that there is fire inside. This can reduce that cost of losing property and also life. These circuits use a 240V voltage supply with 9V dry cell battery as a back up power supply. This system is necessary in large multistoried buildings, hotels, offices and others. Most factories and companies use a costly fire alarm system, but unlike this circuit, it is affordable and reliable.