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Aeration-boat Sensors

Sensors for the robot pollution-control boats: aeration designation

Tactile Sensors

Last-resort for indication of collision. Types include: tactile feelers, tactile bumpers (e.g. spring-loaded tactile bumpers could activate microswitches upon collision) or a distributed surface array

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Proximity Sensors

1. Ultrasonic proximity sensor (reflective sensor)

This type of sensor will respond to changes in the amount of emitted energy — after interaction with a target of interest — that is returned to a detector. Will include two transducers (one to emit the energy, and one to receive the energy). Usually transmit longitudinal sound wave of 20-200KHz. The receiver response is function of amplitude of returned energy. This sensor can give us quantitative indicator of distance to target of interest.

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2. Microwave proximity sensor

Similar to ultrasonic but EM radiation emitted is microwave region of spectrum instead!

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3. Optical proximity sensor (diffuse type)

This type of sensor again will respond to changes in the amount of emitted energy return after interaction with target of interest. Modulated near-infrared used to reduced effects of ambient light. There are several advantages of this type of sensor vs ultrasonic: reduced time lag as this will propagate at the speed of light rather than sound, easily focussed to eliminate adjacent sensor interaction which would occur with ultrasonic [could be a problem with boat requiring sensors on each side – i.e. ultrasonic receiver may capture energy from unpaired emitter]

blogIRsensorDissolved Oxygen Sensor

Link hereĀ 

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