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Proximity Sensors

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Ammelia Chia

on 29 April 2013

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Transcript of Proximity Sensors

Proximity Sensors by: AMMELIA CAROLINE CHIA What are sensors?
Criteria to choose a sensor
Proximity sensors
Advantages
Applications What are sensors? Criteria to choose a sensor Accuracy
Environmental Condition
Range
Calibration
Resolution
Cost
Repeatability How proximity sensors work? detects the presence of nearby objects without any physical contact
emits a beam of electromagnetic radiation and look for changes in the field when target comes closer to the face of the sensor Types of proximity sensors INDUCTIVE PROXIMITY SENSOR CAPACITIVE PROXIMITY SENSOR PHOTOELECTRIC PROXIMITY
SENSOR ULTRASONIC PROXIMITY
SENSOR converts physical parameter into
a signal which can be
measured electrically. used to detect and respond to
electrical or
optical signals Advantages of non-contact proximity sensors No physical contact required with the target to be detected therefore, no friction and wear out
Fast switching characteristics
Unlimited number of switching cycles
Can work in harsh conditions
Any type of target material can be detected APPLICATIONS... Automatic gate sensors detects motion close by the gate
send signals to the electric gates system that controls the motors of the gates
can be AC or DC motors
amount of time the gate will remain open and close back depends on the configuration of sensors and the electric gates system Sensor For Car Alarms This dual zone radar proximity sensor detects moving high density objects using RF Field Disturbance Technology designed to sense motion or movement within the vehicle's interior as well as provide a pre-Warning output for movement outside the vehicle
uses a microwave frequency to detect field disturbance within a contained area;
works like a double layer force field around your car
has sensitivity adjustments for exterior and interior zones to allow for a pre-warning (range can be adjusted) SMARTPHONES detects how close the screen is to your body
allows the phone to sense when you have brought the phone up to your ear
display turns off in order to save battery
stops detecting touches to avoid unwanted input until you take the phone away from your ear 2 detects towers and sources of interference so that one can amplify or filter them out using beam forming techniques For iPhone,
shuts off the screen and touch-sensitive circuitry when it is brought close to the face, both to save battery and prevent unintentional touches 3 4 1 Senses how close the phone to the face to pause every activity so the user can take a phone call
will resume to previous activity after the call ends used to keep track of other valuables
keys, bags or children HipKey Advance wireless proximity alarm save time by helping to find your belongings at the push of a button connects your iPhone or iPad using a low power connection detects motion close by the gate
send signals to the electric gates system that controls the motors of the gates
can be AC or DC motors
amount of time the gate will remain open and close back depends on the configuration of sensors and the electric gates system Automatic Gate Sensors http://www.hippih.com/hipkey INVISIBEAM FIELD DISTURBANCE SENSOR These sensors even incorporate user-adjustable time delays and speed detection logic that can be turned on or off as required. This means that, in many applications, the need for an external timer or speed relay is eliminated, saving money, space and installation time THANK YOU! REFERENCES http://www.hippih.com/hipkey#introduction
http://mobiledeviceinsight.com/2011/12/sensors-in-smartphones/
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