Ubiquitous Computing at ETHZ - ETH Zurich | Flashcards & Summaries

Select your language

Suggested languages for you:
Log In Start studying!

Lernmaterialien für Ubiquitous Computing an der ETHZ - ETH Zurich

Greife auf kostenlose Karteikarten, Zusammenfassungen, Übungsaufgaben und Altklausuren für deinen Ubiquitous Computing Kurs an der ETHZ - ETH Zurich zu.

TESTE DEIN WISSEN

 What is modality?

Lösung anzeigen
TESTE DEIN WISSEN

class of single independent channel

of input/output between human & computer


if only one is implemented its unimodal,

otherwise multimodal


multimodal input/output can be helpful to

complement several channels of interaction for better coverage -> overlapping modalities

redundantly obtain or provide information

Lösung ausblenden
TESTE DEIN WISSEN

What are these multimodal channels?

Equivalence, Specialization, Redundancy, Complementarity, Transfer, Concurrency

Lösung anzeigen
TESTE DEIN WISSEN

Equivalence

information is presented in multiple ways and can be interpreted as the same information

Specialization

when a specific kind of information is always processed through the same modality

Redundancy

multiple modalities process the same information

Complementarity

multiple modalities take separate information and merge it

Transfer

a modality produces information that another modality consumes

Concurrency

multiple modalities take in separate information that is not merged

Lösung ausblenden
TESTE DEIN WISSEN

Why is a "bad" resistor a good resistive sensor?

Lösung anzeigen
TESTE DEIN WISSEN

Because the resistance changes based on certain conditions and we want to track those conditions.

Lösung ausblenden
TESTE DEIN WISSEN

What are strain gauges?

Lösung anzeigen
TESTE DEIN WISSEN

The resistance changes based on the strain that is applied to the material.

Lösung ausblenden
TESTE DEIN WISSEN

What are thermo-resistive elements?

Lösung anzeigen
TESTE DEIN WISSEN

Elements of which the resistance changes based on temperature.

Lösung ausblenden
TESTE DEIN WISSEN

How do moisture sensors measure?

Lösung anzeigen
TESTE DEIN WISSEN

If the moisture changes the resistivity changes.

Lösung ausblenden
TESTE DEIN WISSEN

What are the biggest applications of the photoelectric effect?

Lösung anzeigen
TESTE DEIN WISSEN

CMOS sensors in cameras

CMOS (rolling shutter)

+ fast frame rate

- noisy data

CCD (global shutter)

+ more sensitive

- slower

Lösung ausblenden
TESTE DEIN WISSEN

What sensor would you use to detect a person in a carseat?

What if we don't want it to go off if an object is on the seat?

Lösung anzeigen
TESTE DEIN WISSEN

To get the weight we could use a pressure sensor.

A capacitive sensor could be used to distinguish a box from a human because the human body can probably conduct an electrical signal better than a box (unless its a box of water)

Lösung ausblenden
TESTE DEIN WISSEN

What was the real difference of the multitouch of the iphone to the touch sensors of other devices at the time?

Lösung anzeigen
TESTE DEIN WISSEN

The others were measuring pressure.

Lösung ausblenden
TESTE DEIN WISSEN

What is resistive sensing?

Lösung anzeigen
TESTE DEIN WISSEN

Its a sandwich design that was used on touch devices to measure pressure.

There are two sheets outside and a spacer inside.

The two sheets can make a connection if you exert enough force onto them.

Lösung ausblenden
TESTE DEIN WISSEN

What are pros and cons of resistive touch sensing?

Lösung anzeigen
TESTE DEIN WISSEN

pro:

  • cheap
  • simple to build and process
  • no particular requirements for use
  • solid noise rejection

con:

  • prone to wear and breaking
  • tunable sensitivity
  • ease of use
  • multitouch?
Lösung ausblenden
TESTE DEIN WISSEN

What are classes that a sensor can fall in?

Lösung anzeigen
TESTE DEIN WISSEN

Active or Passive 

Absolute or Relative


Active sensors receive a stimulant signal which they resolve into a resultant signal through resistance, capacitance, inductance or hall effect. They require external power for operation.


Passive sensors receive an outside stimulus that is piezoelectric, photoelectric, ... and produce a voltage which you can use to detect. Does not need external power.


Absolute sensor can measure absolute values and relative sensors relative values.



Lösung ausblenden
  • 102131 Karteikarten
  • 1824 Studierende
  • 99 Lernmaterialien

Beispielhafte Karteikarten für deinen Ubiquitous Computing Kurs an der ETHZ - ETH Zurich - von Kommilitonen auf StudySmarter erstellt!

Q:

 What is modality?

A:

class of single independent channel

of input/output between human & computer


if only one is implemented its unimodal,

otherwise multimodal


multimodal input/output can be helpful to

complement several channels of interaction for better coverage -> overlapping modalities

redundantly obtain or provide information

Q:

What are these multimodal channels?

Equivalence, Specialization, Redundancy, Complementarity, Transfer, Concurrency

A:

Equivalence

information is presented in multiple ways and can be interpreted as the same information

Specialization

when a specific kind of information is always processed through the same modality

Redundancy

multiple modalities process the same information

Complementarity

multiple modalities take separate information and merge it

Transfer

a modality produces information that another modality consumes

Concurrency

multiple modalities take in separate information that is not merged

Q:

Why is a "bad" resistor a good resistive sensor?

A:

Because the resistance changes based on certain conditions and we want to track those conditions.

Q:

What are strain gauges?

A:

The resistance changes based on the strain that is applied to the material.

Q:

What are thermo-resistive elements?

A:

Elements of which the resistance changes based on temperature.

Mehr Karteikarten anzeigen
Q:

How do moisture sensors measure?

A:

If the moisture changes the resistivity changes.

Q:

What are the biggest applications of the photoelectric effect?

A:

CMOS sensors in cameras

CMOS (rolling shutter)

+ fast frame rate

- noisy data

CCD (global shutter)

+ more sensitive

- slower

Q:

What sensor would you use to detect a person in a carseat?

What if we don't want it to go off if an object is on the seat?

A:

To get the weight we could use a pressure sensor.

A capacitive sensor could be used to distinguish a box from a human because the human body can probably conduct an electrical signal better than a box (unless its a box of water)

Q:

What was the real difference of the multitouch of the iphone to the touch sensors of other devices at the time?

A:

The others were measuring pressure.

Q:

What is resistive sensing?

A:

Its a sandwich design that was used on touch devices to measure pressure.

There are two sheets outside and a spacer inside.

The two sheets can make a connection if you exert enough force onto them.

Q:

What are pros and cons of resistive touch sensing?

A:

pro:

  • cheap
  • simple to build and process
  • no particular requirements for use
  • solid noise rejection

con:

  • prone to wear and breaking
  • tunable sensitivity
  • ease of use
  • multitouch?
Q:

What are classes that a sensor can fall in?

A:

Active or Passive 

Absolute or Relative


Active sensors receive a stimulant signal which they resolve into a resultant signal through resistance, capacitance, inductance or hall effect. They require external power for operation.


Passive sensors receive an outside stimulus that is piezoelectric, photoelectric, ... and produce a voltage which you can use to detect. Does not need external power.


Absolute sensor can measure absolute values and relative sensors relative values.



Ubiquitous Computing

Erstelle und finde Lernmaterialien auf StudySmarter.

Greife kostenlos auf tausende geteilte Karteikarten, Zusammenfassungen, Altklausuren und mehr zu.

Jetzt loslegen

Das sind die beliebtesten StudySmarter Kurse für deinen Studiengang Ubiquitous Computing an der ETHZ - ETH Zurich

Für deinen Studiengang Ubiquitous Computing an der ETHZ - ETH Zurich gibt es bereits viele Kurse, die von deinen Kommilitonen auf StudySmarter erstellt wurden. Karteikarten, Zusammenfassungen, Altklausuren, Übungsaufgaben und mehr warten auf dich!

Das sind die beliebtesten Ubiquitous Computing Kurse im gesamten StudySmarter Universum

Cloud Computing

Ostbayerische Technische Hochschule Regensburg

Zum Kurs
Cloud Computing

Fachhochschule Campus 02 Graz

Zum Kurs
Cloud Computing

Fachhochschule Campus 02 Graz

Zum Kurs

Die all-in-one Lernapp für Studierende

Greife auf Millionen geteilter Lernmaterialien der StudySmarter Community zu
Kostenlos anmelden Ubiquitous Computing
Erstelle Karteikarten und Zusammenfassungen mit den StudySmarter Tools
Kostenlos loslegen Ubiquitous Computing