Sensors

Sensor Type
Acceleration/Vibration Acoustic/Ultrasonic Chemical/Gas Electric/Magnetic Flow Force/Load/Torque/Strain Humidity/Moisture	Leak/Level Machine Vision Optical Motion/Velocity/Displacement Position/Presence/Proximity Pressure Temperature

Featured Articles

More Articles

A Power Monitor with Improved Response Time November 1, 2009

Article By : Michael Harney

A selective sampler enables you to sample a signal more quickly and efficiently while retaining the desired frequency resolution. The technique can be used to detect transient power changes rapidly, before blackouts occur.More>>

http://www.sensorsmag.com/sensors-types
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Advanced Motion sensor

The ScienceScope Advanced Motion sensor uses a combination of Infra-red and Ultrasonic signals to accurately measure the distance between the transmitter and the receiver. The unit can be set to provide a large range of distance range outputs, velocity range outputs or acceleration range outputs. (See below)

As a result the unit can be used to measure large changes in position or to measure tiny movements. In the highest precision range for instance the resolution of the unit is approximately 0.03mm. That is about the thickness of a human hair!

In order to maintain this level of precision it is necessary for the unit to compensate for both for changes in temperature and also humidity.

By using a novel technique to measure distance this unit allows for a wide range of investigations to be carried out that previously were not possible in the school laboratory.

1. Logger compatibility :ScienceScope Type 2 (Click for details)

2. ranges for distance measurements ± 15 mm, 100 mm, 0.5 m, 4 m.

3. ranges for velocity measurements ± 0.5 ms^-1, 2.5 ms^-1, 10 ms^-1.

4. ranges for acceleration measurements ± , 10 ms^-2, 50 ms^-2.

Sensor Resources

Advanced Motion Sensor (Vibrating Ruler).pdf

Advanced Motion Sensor (Motion of a Falling Ball).pdf

Datadisc Files from the Falling Ball Notes

Falling Ball acceleration.DDW

falling ball displacement fast.ddw

Falling Ball displacement.ddw

falling ball velocity.ddw

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Sensor types

Sensor Types

Sorted by sensor code. Display format is akin to Fortran formatting rules.

Code	Description	Units	Display Format	Comments	Master Description	UoM	Allowed Range
Acc		m	5.2		Accumulation on snow surface	m	[0] [5.1]
AiT		C	6.1		Air temperature	C	[-40] [35]
AiT-1		C	6.1		Air temperature	C	[-40] [35]
AiT-2		C	6.1		Air temperature	C	[-40] [35]

http://data.aad.gov.au/aadc/argos/sensor_types.cfm
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Biological sensors

Further information: Sense

All living organisms contain biological sensors with functions similar to those of the mechanical devices described. Most of these are specialized cells that are sensitive to:

• Light, motion, temperature, magnetic fields, gravity, humidity, vibration, pressure, electrical fields, sound, and other physical aspects of the external environment
• Physical aspects of the internal environment, such as stretch, motion of the organism, and position of appendages (proprioception)
• Environmental molecules, including toxins, nutrients, and pheromones
• Estimation of biomolecules interaction and some kinetics parameters
• Internal metabolic milieu, such as glucose level, oxygen level, or osmolality
• Internal signal molecules, such as hormones, neurotransmitters, and cytokines
• Differences between proteins of the organism itself and of the environment or alien creatures

Artificial sensors that mimic biological sensors by using a biological sensitive component, are called biosensors.

http://en.wikipedia.org/wiki/Sensor