Industrial
Potato pieces detection
Drying/Moisture Detection
Solder Wave Height Control
Collision Avoidance
Hazardous Environment Monitoring
Non-contact Mapping - Tomography
Turbo Speed Sensor
Scissor Lift Safety Sensor
Operator Triggered 'Dead-Man' Switches
Fish Detection
Domestic
Non-contact Light Switches
Touch Pad Controls
Home Security Proximity Detection
Medical and Human Constant
Current Source
Cardiac Monitor
Tooth Decay Sensor
Cell Analysis
Hand Position Sensor
Head Position Sensor
Automotive
Sensatech have developed a capacitive sensor
specifically for use on commercial or public service
vehicles as a collision warning device.
A version of the unit is intended as a reversing
sensor. This is activated when the driver engages
reverse gear. The sensor alerts the driver to many of
the possible dangers, which may be invisible behind
their vehicle, by sounding an audible alarm.
Capacitive sensors have advantages over the more
frequently used ultrasonic devices for this
application.
A fundamental difference is that a capacitive
sensor is a field sensing device rather than a beam
sensing device and as such is free from blind spots
which can occur between beam lobes. For instance, our
sensors are able to look through materials so a
sensor could be placed internally behind the bumper
of a vehicle without the need for external holes
which ultrasonic devices require.
Capacitive sensors also exhibit low sensitivity to
target material type and orientation. A wire fence
for example would be detected as reliably as a brick
wall by a capacitive device whereas a beam device may
have difficulty detecting it at all.
Retail Industry
The Clarks International "Foot Gauge" is
a non-contact sensing system, developed by Clarks
International and Sensatech, which measures human
feet. This allows for correct shoe fitting and
matching suitable footwear to retail customers.
The sensor arrays map each foot and software
produces a measurement of each foot. These arrays
each comprise of more than 2000 individual
electrodes. Signal processing takes into account that
only the sole of the foot is in contact with the mat
and the widest and longest parts of each foot are not
in direct contact with the sensor array.
Specialist software was created to do the reverse
transform on the capacitive data to recreate the
shape of the target object.
By including sensor within the carpet or within
display stands, a system can record the movements of
people throughout the retail environment. This would
provide analysis of the movement and the amount of
people from when they enter the shop to when they
leave.
Also, capacitive systems can be used as an
anti-theft mechanism. Any object will alter the
electric field of the sensor. When that object is
moved the sensor will respond.
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