“A developed India by
2020, or even earlier, is not a dream. It need not be a mere vision in the
minds of many Indians. It is a mission we can all take up - and succeed.” - Dr.
A.P.J. Abdul Kalam, India 2020: A Vision for the New Millennium.
It is with these words in mind that we came up with the idea
of a Power Saving Passive Infrared Sensor Module: a device that is simple yet
effective, smart yet unpretentious: in short, truly Indian!
The average household spends more than Rs.18000 a year on electricity bills. Standard power saving modules available in the market are either too expensive for the common man to buy, or do not possess sufficient longevity to justify its price. We focused on solving this problem by designing a power saving module that costs only Rs.850, and is also durable enough to serve the customer for a good number of years.
The Passive infrared (PIR) sensors detect infrared energy radiating from objects within their field of vision without emitting any radiations (hence the name passive). The most common object a PIR sensor detects is the human body. This property of the PIR sensor has been used to detect when a person has left or entered an area. Depending on this movement, a power saving module has been designed, which switches on/off the power supply to a room automatically. This reduces the power expenses occurring due to human negligence in switching off lights, fans etc.
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