Sensors for Robotics Introduction. Human Sensing Sense: Vision Audition Gustation Olfaction Tactition What sensed: EM waves Pressure waves Chemicals -

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Presentation transcript:

Sensors for Robotics Introduction

Human Sensing Sense: Vision Audition Gustation Olfaction Tactition What sensed: EM waves Pressure waves Chemicals - flavor Chemicals - odor Contact pressure

Human Sensing Sense Thermoception Nociception Equilibrioception Proprioception What sensed: Heat Pain Sense of balance Body awareness

Animal Sensing Magnetoception (birds) Electroception (sharks, etc.) Echolocation (bats, etc.) Pressure gradient (fish)

Human Sensors Sense: Vision Audition Gustation Olfaction Tactition Sensor: Eyes Ears Tongue Nose Skin

Human Sensors Sense: Thermoception Nociception Equilibrioception Proprioception Sensor: Skin Skin, organs, joints Ears Muscles, joints

Common Animal Sensors SensorPhenomena EyeElectromagnetic waves in some sub- spectrum EarPressure waves between about 10 hz and 100kHz (animal-dependent) NoseConcentration of airborne molecules TongueConcentration of dissolved molecules, etc. SkinPattern of pressure on animal's surface Proprioceptive system Pattern of nerve impulses from muscles

Unusual Animal Sensors Magnetoreceptor: Sensing of earth’s magnetic field. Seen in newts, birds, rats and maybe humans. Electric field sensing: Seen in a variety of fish. Cerci: Cockroach airflow sensors Body as eye: Brittlestar covered with optically perfect lenses

Biological Rotation Sensor semicircular canals detect angular acceleration 3 canals: one per plane inertia of fluid causes deflection of sensory element

Biomimetic: Robot design as creature design Animal sensory systems adapted to functional needs and environment. Robots can use non-biological sensors which suit them to their ‘ecosystems’ e.g., neutron-sniffing robodog, UAV with weather radar, etc.

Robot Sensors Sense: Vision Audition Gustation Olfaction Tactitions Thermoception Nociception Sensor: Camera Microphone Chemical sensors Contact sensors Thermocouple ?

Robot Sensors Sense: Equilibrioception Proprioception Magnetoception Electroception Echolocation Pressure gradient Sensor: Accelerometer Encoders Magnetometer Voltage sensor Sonar Array of pressure sensors?

Robot Sensors EM spectrum beyond visual spectrum (RADAR, LIDAR, radiation, infrared) Chemical sensing beyond taste and smell Hearing beyond human range Lots more.

Infrared Ranging IR Modulator Receiver Robot Sensors - localization Gyroscope Compass GPS Magnetometer Sonar Ranging Rotary Encoder Accelerometer Linear Encoder Camera Laser RangefinderLaser triangulation Do you recognize the difference between the two categories?

Magnetic Reed Switch Gas Radiation Piezo Bend Resistive Bend CDS Cell Metal Detector Robot Sensors – specific tasks Compass PIR Pressure Pyroelectric Detector Lever Switch Microphone