Prior to this week’s assigned
research, I thought I understood the basic concept of movement sensors and how
and why they were commonly used, yet as I continued doing my research I became
more aware of the importance and dependability that other systems have over
this system. Movement sensors detect
changes in positions of a person or object relative to its environment or the
other way around. There are six types of
motion detectors that are commonly used including: infrared, optics, radio
frequency energy, sound, vibration, and magnetism.
The types of movement sensor methods
are mechanical and electronic methods.
Most people are unaware of the mechanical movement sensors around us,
yet unknowingly we use these daily and vastly.
From the moment we wake up we use movement sensors such as the moment we
turn our alarm clock off, when dialing
the heating time in our microwaves, typing in our computer keyboards or even
the simple motion of flicking the light switch.
Electronic detection sensors are ones that detect optical or acoustical
motion. Examples of when we encounter these
sensors include the ones that activate lighting, activate a camera to turn on, or
even trigger an alarm.
Because of the wide range of
functions of movement sensors, these are the most used type of sensors. Other types of sensors are dependent and rely
on these sensors in order to activate or deactivate. For pressure sensors, like my classmate C.
Meraz explained, a piezoelectric pressure transducer uses crystal to convert motion into an electrical output since “these
sensors are also highly susceptible to shock and vibration”. With
flow sensors, like Brian V says in his blog post, record measurements within a
flow meter of flow of fluids or gases.
These measurements are found by observing the movement of such fluids or gases.
Matthew Tedesco also explains that “aside from mechanical flow meters,
fluid velocity and flow can be measured using optic sensors”. As explained before, optic motion sensors
fall under the movement sensors category.
In conclusion, we can encounter movement sensors in our everyday life and
they also play important roles in other practices.
Sources:
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