Question
Consider the following actions:
1. Detection of car crash/collisionWhich results in the deployment of airbags almost instantaneously
2. Detection of accidental free fall of a laptop towards the groundWhich results in the immediate turning off of the hard drive
3. Detection of the tilt of the smart- phoneWhich results in the rotation of display between portrait and landscape mode
In how many of the above actions is the function of accelerometer required?
(a) Only one
(b) Only two
(c) All three
(d) None
Answer:
C
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Explanation:
The function of an accelerometer is required in all three actions mentioned.
In the detection of a car crash/collision, an accelerometer is used to measure the sudden deceleration or change in motion, which triggers the deployment of airbags.
In the detection of an accidental free fall of a laptop, an accelerometer detects the sudden change in orientation and acceleration, which can be used to trigger actions such as turning off the hard drive to protect it from damage.
In the detection of the tilt of a smartphone, an accelerometer is used to measure the orientation and movement of the device, allowing the rotation of the display between portrait and landscape mode.