Save Power Consumption with PIR sensor and Arduino
In one of the blog of Electromania, an easygoing approach is demonstrated where the power consumption for ATMEGA 328Pwhich is based on Arduino boards, is reduced to around 60-70%. In this project, differences in power consumption are investigated, of PIR sensor module and Arduino nano. The aim of this investigation is to understand the process that how Pyroelectric/Passive Infrared (PIR) motion sensor is interfaced with Arduino or any microcontroller.
This will also comprehend the procedure to detect output of PIR sensor by using Interrupts of Arduino boards. Further, it will explanation that hoe batter life is extended and power consumption is reduced, when Arduino nano is put into deep sleep or hibernation and motion is not detected by PIR sensor.
In general, PIR sensors are used in Automatic doors or lights, surveillance cameras, toys, night lamps, automatic cameras etc. and can be easily detected due to their structure as they have typical hemispherical dome with honeycomb like small facets all around its body. In this project, PIR sensor is used for producing electronic signal output, when it detects any human/animal movement.
These sensors are built with a capacity to perceive miniscule changes in surrounding temperature as they detect Infrared radiations emitted from our body. The pyroelectric material used in the sensor, generates temporary electrical voltage which depends on variations in temperature.
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